/root/firefox-clang/dom/base/nsContentUtils.cpp

Bug Summary

File:	root/firefox-clang/dom/base/nsContentUtils.cpp
Warning:	line 12351, column 9 Called C++ object pointer is null

Annotated Source Code

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Show analyzer invocation

clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -O2 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name nsContentUtils.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -relaxed-aliasing -ffp-contract=off -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/dom/base -fcoverage-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/dom/base -resource-dir /usr/lib/llvm-23/lib/clang/23 -include /root/firefox-clang/config/gcc_hidden.h -include /root/firefox-clang/obj-x86_64-pc-linux-gnu/mozilla-config.h -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/stl_wrappers -D _GLIBCXX_ASSERTIONS=1 -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/system_wrappers -U _FORTIFY_SOURCE -D _FORTIFY_SOURCE=2 -D DEBUG=1 -D MOZ_HAS_MOZGLUE -D MOZILLA_INTERNAL_API -D IMPL_LIBXUL -D MOZ_SUPPORT_LEAKCHECKING -D STATIC_EXPORTABLE_JS_API -I /root/firefox-clang/dom/base -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dom/base -I /root/firefox-clang/dom/battery -I /root/firefox-clang/dom/events -I /root/firefox-clang/dom/media -I /root/firefox-clang/dom/network -I /root/firefox-clang/caps -I /root/firefox-clang/docshell/base -I /root/firefox-clang/dom/base -I /root/firefox-clang/dom/file -I /root/firefox-clang/dom/geolocation -I /root/firefox-clang/dom/html -I /root/firefox-clang/dom/ipc -I /root/firefox-clang/dom/storage -I /root/firefox-clang/dom/svg -I /root/firefox-clang/dom/xml -I /root/firefox-clang/dom/xslt/xpath -I /root/firefox-clang/dom/xul -I /root/firefox-clang/extensions/spellcheck/src -I /root/firefox-clang/gfx/2d -I /root/firefox-clang/image -I /root/firefox-clang/js/xpconnect/loader -I /root/firefox-clang/js/xpconnect/src -I /root/firefox-clang/js/xpconnect/wrappers -I /root/firefox-clang/layout/base -I /root/firefox-clang/layout/forms -I /root/firefox-clang/layout/generic -I /root/firefox-clang/layout/style -I /root/firefox-clang/layout/xul -I /root/firefox-clang/netwerk/base -I /root/firefox-clang/netwerk/protocol/http -I /root/firefox-clang/netwerk/url-classifier -I /root/firefox-clang/parser/htmlparser -I /root/firefox-clang/security/manager/ssl -I /root/firefox-clang/third_party/xsimd/include -I /root/firefox-clang/widget -I /root/firefox-clang/xpcom/build -I /root/firefox-clang/xpcom/ds -I /root/firefox-clang/netwerk/sctp/datachannel -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/ipc/ipdl/_ipdlheaders -I /root/firefox-clang/ipc/chromium/src -I /root/firefox-clang/third_party/abseil-cpp -I /root/firefox-clang/toolkit/components/telemetry -I /root/firefox-clang/xpcom/base -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/nspr -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/nss -D MOZILLA_CLIENT -I /usr/include/gtk-3.0/unix-print -I /usr/include/gtk-3.0 -I /usr/include/pango-1.0 -I /usr/include/cloudproviders -I /usr/include/at-spi2-atk/2.0 -I /usr/include/at-spi-2.0 -I /usr/include/dbus-1.0 -I /usr/lib/x86_64-linux-gnu/dbus-1.0/include -I /usr/include/fribidi -I /usr/include/harfbuzz -I /usr/include/atk-1.0 -I /usr/include/cairo -I /usr/include/pixman-1 -I /usr/include/gdk-pixbuf-2.0 -I /usr/include/glycin-2 -I /usr/include/freetype2 -I /usr/include/libpng16 -I /usr/include/gio-unix-2.0 -I /usr/include/glib-2.0 -I /usr/lib/x86_64-linux-gnu/glib-2.0/include -I /usr/include/libmount -I /usr/include/blkid -I /usr/include/sysprof-6 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/16/../../../../include/c++/16 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/16/../../../../include/c++/16/backward -internal-isystem /usr/lib/llvm-23/lib/clang/23/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/16/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wno-error=pessimizing-move -Wno-error=large-by-value-copy=128 -Wno-error=implicit-int-float-conversion -Wno-error=thread-safety-analysis -Wno-error=tautological-type-limit-compare -Wno-invalid-offsetof -Wno-range-loop-analysis -Wno-deprecated-anon-enum-enum-conversion -Wno-deprecated-enum-enum-conversion -Wno-inline-new-delete -Wno-error=deprecated-declarations -Wno-error=array-bounds -Wno-error=free-nonheap-object -Wno-error=atomic-alignment -Wno-error=deprecated-builtins -Wno-psabi -Wno-error=builtin-macro-redefined -Wno-vla-cxx-extension -Wno-unknown-warning-option -Wno-character-conversion -std=gnu++20 -fdeprecated-macro -ferror-limit 19 -fstrict-flex-arrays=1 -stack-protector 2 -fstack-clash-protection -ftrivial-auto-var-init=pattern -fno-rtti -fgnuc-version=4.2.1 -fno-implicit-modules -fskip-odr-check-in-gmf -fno-sized-deallocation -fno-aligned-allocation -fdiagnostics-absolute-paths -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -mllvm -dwarf-linkage-names=Abstract -faddrsig -fdwarf2-cfi-asm -o /tmp/scan-build-2026-09-01-224014-2642839-1 -x c++ /root/firefox-clang/dom/base/nsContentUtils.cpp

/root/firefox-clang/dom/base/nsContentUtils.cpp

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1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4 
5/* A namespace class for static layout utilities. */
6 
7#include "nsContentUtils.h"
8 
9#include <fmt/format.h>
10 
11#include <algorithm>
12#include <cstddef>
13#include <cstdint>
14#include <cstdlib>
15#include <cstring>
16#include <functional>
17#include <new>
18#include <utility>
19 
20#include "BrowserChild.h"
21#include "CharacterDataBuffer.h"
22#include "DecoderTraits.h"
23#include "ErrorList.h"
24#include "HTMLSplitOnSpacesTokenizer.h"
25#include "ImageOps.h"
26#include "InProcessBrowserChildMessageManager.h"
27#include "MainThreadUtils.h"
28#include "PLDHashTable.h"
29#include "ReferrerInfo.h"
30#include "ScopedNSSTypes.h"
31#include "ThirdPartyUtil.h"
32#include "Units.h"
33#include "chrome/common/ipc_message.h"
34#include "gfxDrawable.h"
35#include "harfbuzz/hb.h"
36#include "imgICache.h"
37#include "imgIContainer.h"
38#include "imgILoader.h"
39#include "imgIRequest.h"
40#include "imgLoader.h"
41#include "js/Array.h"
42#include "js/ArrayBuffer.h"
43#include "js/BuildId.h"
44#include "js/GCAPI.h"
45#include "js/Id.h"
46#include "js/JSON.h"
47#include "js/PropertyAndElement.h"  // JS_DefineElement, JS_GetProperty
48#include "js/PropertyDescriptor.h"
49#include "js/Realm.h"
50#include "js/RegExp.h"
51#include "js/RegExpFlags.h"
52#include "js/RootingAPI.h"
53#include "js/TypeDecls.h"
54#include "js/Value.h"
55#include "js/Wrapper.h"
56#include "jsapi.h"
57#include "jsfriendapi.h"
58#include "mozAutoDocUpdate.h"
59#include "mozIDOMWindow.h"
60#include "mozilla/AlreadyAddRefed.h"
61#include "mozilla/ArrayIterator.h"
62#include "mozilla/AsyncEventDispatcher.h"
63#include "mozilla/AtomArray.h"
64#include "mozilla/Atomics.h"
65#include "mozilla/Attributes.h"
66#include "mozilla/AutoRestore.h"
67#include "mozilla/BackgroundHangMonitor.h"
68#include "mozilla/Base64.h"
69#include "mozilla/BasePrincipal.h"
70#include "mozilla/BasicEvents.h"
71#include "mozilla/BloomFilter.h"
72#include "mozilla/CORSMode.h"
73#include "mozilla/CallState.h"
74#include "mozilla/CheckedInt.h"
75#include "mozilla/ClearOnShutdown.h"
76#include "mozilla/Components.h"
77#include "mozilla/ContentBlockingAllowList.h"
78#include "mozilla/CycleCollectedJSContext.h"
79#include "mozilla/DOMEventTargetHelper.h"
80#include "mozilla/DebugOnly.h"
81#include "mozilla/ErrorResult.h"
82#include "mozilla/EventDispatcher.h"
83#include "mozilla/EventListenerManager.h"
84#include "mozilla/EventQueue.h"
85#include "mozilla/EventStateManager.h"
86#include "mozilla/FOGIPC.h"
87#include "mozilla/FlowMarkers.h"
88#include "mozilla/FlushType.h"
89#include "mozilla/HTMLEditor.h"
90#include "mozilla/HangAnnotations.h"
91#include "mozilla/IMEStateManager.h"
92#include "mozilla/InputEventOptions.h"
93#include "mozilla/Latin1.h"
94#include "mozilla/Likely.h"
95#include "mozilla/LoadInfo.h"
96#include "mozilla/Logging.h"
97#include "mozilla/ManualNAC.h"
98#include "mozilla/Maybe.h"
99#include "mozilla/MediaFeatureChange.h"
100#include "mozilla/MouseEvents.h"
101#include "mozilla/NullPrincipal.h"
102#include "mozilla/OriginAttributes.h"
103#include "mozilla/Preferences.h"
104#include "mozilla/PresShell.h"
105#include "mozilla/ProfilerRunnable.h"
106#include "mozilla/RangeBoundary.h"
107#include "mozilla/RefPtr.h"
108#include "mozilla/Result.h"
109#include "mozilla/ScopeExit.h"
110#include "mozilla/ScrollContainerFrame.h"
111#include "mozilla/ShutdownPhase.h"
112#include "mozilla/Span.h"
113#include "mozilla/StaticAnalysisFunctions.h"
114#include "mozilla/StaticPrefs_browser.h"
115#include "mozilla/StaticPrefs_clipboard.h"
116#include "mozilla/StaticPrefs_dom.h"
117#include "mozilla/StaticPrefs_network.h"
118#include "mozilla/StaticPrefs_pdfjs.h"
119#include "mozilla/dom/ReportDeliver.h"
120#include "mozilla/extensions/WebExtensionPolicy.h"
121#include "nsIOService.h"
122#include "nsMenuPopupFrame.h"
123#include "nsObjectLoadingContent.h"
124#ifdef FUZZING
125#  include "mozilla/StaticPrefs_fuzzing.h"
126#endif
127#include "mozilla/StaticPrefs_nglayout.h"
128#include "mozilla/StaticPrefs_privacy.h"
129#include "mozilla/StaticPrefs_test.h"
130#include "mozilla/StaticPrefs_ui.h"
131#include "mozilla/StaticPtr.h"
132#include "mozilla/TextControlState.h"
133#include "mozilla/TextEditor.h"
134#include "mozilla/TextEvents.h"
135#include "mozilla/TextUtils.h"
136#include "mozilla/Tokenizer.h"
137#include "mozilla/UniquePtr.h"
138#include "mozilla/ViewportUtils.h"
139#include "mozilla/dom/AncestorIterator.h"
140#include "mozilla/dom/AutoEntryScript.h"
141#include "mozilla/dom/AutoSuppressEventHandlingAndSuspend.h"
142#include "mozilla/dom/AutocompleteInfoBinding.h"
143#include "mozilla/dom/BindingDeclarations.h"
144#include "mozilla/dom/BindingUtils.h"
145#include "mozilla/dom/BlobImpl.h"
146#include "mozilla/dom/BlobURLProtocolHandler.h"
147#include "mozilla/dom/BorrowedAttrInfo.h"
148#include "mozilla/dom/BrowserBridgeParent.h"
149#include "mozilla/dom/BrowserParent.h"
150#include "mozilla/dom/BrowsingContext.h"
151#include "mozilla/dom/BrowsingContextGroup.h"
152#include "mozilla/dom/CacheExpirationTime.h"
153#include "mozilla/dom/CallbackFunction.h"
154#include "mozilla/dom/CallbackObject.h"
155#include "mozilla/dom/ChildIterator.h"
156#include "mozilla/dom/ChromeMessageBroadcaster.h"
157#include "mozilla/dom/ContentChild.h"
158#include "mozilla/dom/ContentFrameMessageManager.h"
159#include "mozilla/dom/ContentParent.h"
160#include "mozilla/dom/CustomElementRegistry.h"
161#include "mozilla/dom/CustomElementRegistryBinding.h"
162#include "mozilla/dom/CustomElementTypes.h"
163#include "mozilla/dom/DOMArena.h"
164#include "mozilla/dom/DOMException.h"
165#include "mozilla/dom/DOMExceptionBinding.h"
166#include "mozilla/dom/DOMSecurityMonitor.h"
167#include "mozilla/dom/DOMTypes.h"
168#include "mozilla/dom/DataTransfer.h"
169#include "mozilla/dom/DeprecationReportBody.h"
170#include "mozilla/dom/DocGroup.h"
171#include "mozilla/dom/Document.h"
172#include "mozilla/dom/DocumentFragment.h"
173#include "mozilla/dom/DocumentInlines.h"
174#include "mozilla/dom/DocumentOrShadowRoot.h"
175#include "mozilla/dom/Element.h"
176#include "mozilla/dom/ElementBinding.h"
177#include "mozilla/dom/ElementInlines.h"
178#include "mozilla/dom/Event.h"
179#include "mozilla/dom/EventTarget.h"
180#include "mozilla/dom/FileBlobImpl.h"
181#include "mozilla/dom/FileSystemSecurity.h"
182#include "mozilla/dom/FilteredNodeIterator.h"
183#include "mozilla/dom/FormData.h"
184#include "mozilla/dom/FragmentOrElement.h"
185#include "mozilla/dom/FromParser.h"
186#include "mozilla/dom/FunctionBinding.h"
187#include "mozilla/dom/HTMLElement.h"
188#include "mozilla/dom/HTMLFormElement.h"
189#include "mozilla/dom/HTMLImageElement.h"
190#include "mozilla/dom/HTMLInputElement.h"
191#include "mozilla/dom/HTMLTemplateElement.h"
192#include "mozilla/dom/HTMLTextAreaElement.h"
193#include "mozilla/dom/IPCBlob.h"
194#include "mozilla/dom/IPCBlobUtils.h"
195#include "mozilla/dom/MessageBroadcaster.h"
196#include "mozilla/dom/MessageListenerManager.h"
197#include "mozilla/dom/MessagePort.h"
198#include "mozilla/dom/MimeType.h"
199#include "mozilla/dom/MouseEventBinding.h"
200#include "mozilla/dom/MutationObservers.h"
201#include "mozilla/dom/NameSpaceConstants.h"
202#include "mozilla/dom/NodeBinding.h"
203#include "mozilla/dom/NodeInfo.h"
204#include "mozilla/dom/PBrowser.h"
205#include "mozilla/dom/PContentChild.h"
206#include "mozilla/dom/PrototypeList.h"
207#include "mozilla/dom/ReferrerPolicyBinding.h"
208#include "mozilla/dom/ReportingUtils.h"
209#include "mozilla/dom/Sanitizer.h"
210#include "mozilla/dom/ScriptLoader.h"
211#include "mozilla/dom/ScriptSettings.h"
212#include "mozilla/dom/Selection.h"
213#include "mozilla/dom/ShadowRoot.h"
214#include "mozilla/dom/Text.h"
215#include "mozilla/dom/TrustedHTML.h"
216#include "mozilla/dom/TrustedTypeUtils.h"
217#include "mozilla/dom/TrustedTypesConstants.h"
218#include "mozilla/dom/UserActivation.h"
219#include "mozilla/dom/ViewTransition.h"
220#include "mozilla/dom/WindowBinding.h"
221#include "mozilla/dom/WindowContext.h"
222#include "mozilla/dom/WindowGlobalChild.h"
223#include "mozilla/dom/WindowGlobalParent.h"
224#include "mozilla/dom/WorkerCommon.h"
225#include "mozilla/dom/WorkerPrivate.h"
226#include "mozilla/dom/WorkerRunnable.h"
227#include "mozilla/dom/XULCommandEvent.h"
228#include "mozilla/fallible.h"
229#include "mozilla/gfx/2D.h"
230#include "mozilla/gfx/BaseMargin.h"
231#include "mozilla/gfx/BasePoint.h"
232#include "mozilla/gfx/BaseSize.h"
233#include "mozilla/gfx/DataSurfaceHelpers.h"
234#include "mozilla/gfx/Point.h"
235#include "mozilla/gfx/Rect.h"
236#include "mozilla/gfx/Types.h"
237#include "mozilla/glean/GleanPings.h"
238#include "mozilla/htmlaccel/htmlaccelEnabled.h"
239#ifdef MOZ_MAY_HAVE_HTMLACCEL1
240#  include "mozilla/htmlaccel/htmlaccelNotInline.h"
241#endif
242#include "mozilla/dom/ContentList.h"
243#include "mozilla/intl/LocaleService.h"
244#include "mozilla/ipc/ProtocolUtils.h"
245#include "mozilla/net/ChannelClassifierUtils.h"
246#include "mozilla/widget/IMEData.h"
247#include "nsAboutProtocolUtils.h"
248#include "nsArrayUtils.h"
249#include "nsAtomHashKeys.h"
250#include "nsAttrName.h"
251#include "nsAttrValue.h"
252#include "nsAttrValueInlines.h"
253#include "nsBaseHashtable.h"
254#include "nsCCUncollectableMarker.h"
255#include "nsCOMPtr.h"
256#include "nsCRT.h"
257#include "nsCRTGlue.h"
258#include "nsCanvasFrame.h"
259#include "nsCaseTreatment.h"
260#include "nsCharSeparatedTokenizer.h"
261#include "nsCharTraits.h"
262#include "nsCompatibility.h"
263#include "nsComponentManagerUtils.h"
264#include "nsContainerFrame.h"
265#include "nsContentCreatorFunctions.h"
266#include "nsContentDLF.h"
267#include "nsContentListDeclarations.h"
268#include "nsContentPolicyUtils.h"
269#include "nsCoord.h"
270#include "nsCycleCollectionNoteChild.h"
271#include "nsDOMMutationObserver.h"
272#include "nsDOMString.h"
273#include "nsDebug.h"
274#include "nsDocShell.h"
275#include "nsDocShellCID.h"
276#include "nsError.h"
277#include "nsFocusManager.h"
278#include "nsFrameList.h"
279#include "nsFrameLoader.h"
280#include "nsFrameLoaderOwner.h"
281#include "nsGenericHTMLElement.h"
282#include "nsGkAtoms.h"
283#include "nsGlobalWindowInner.h"
284#include "nsGlobalWindowOuter.h"
285#include "nsHTMLDocument.h"
286#include "nsHTMLTags.h"
287#include "nsHashKeys.h"
288#include "nsHtml5StringParser.h"
289#include "nsIAboutModule.h"
290#include "nsIAnonymousContentCreator.h"
291#include "nsIAppShell.h"
292#include "nsIArray.h"
293#include "nsIAsyncVerifyRedirectCallback.h"
294#include "nsIBidiKeyboard.h"
295#include "nsIBrowser.h"
296#include "nsICacheInfoChannel.h"
297#include "nsICachingChannel.h"
298#include "nsICategoryManager.h"
299#include "nsIChannel.h"
300#include "nsIChannelEventSink.h"
301#include "nsIClassifiedChannel.h"
302#include "nsIConsoleService.h"
303#include "nsIContent.h"
304#include "nsIContentInlines.h"
305#include "nsIContentPolicy.h"
306#include "nsIContentSecurityPolicy.h"
307#include "nsIContentSink.h"
308#include "nsIDOMWindowUtils.h"
309#include "nsIDocShell.h"
310#include "nsIDocShellTreeItem.h"
311#include "nsIDocumentEncoder.h"
312#include "nsIDocumentLoaderFactory.h"
313#include "nsIDocumentViewer.h"
314#include "nsIDragService.h"
315#include "nsIDragSession.h"
316#include "nsIFile.h"
317#include "nsIFocusManager.h"
318#include "nsIFormControl.h"
319#include "nsIFragmentContentSink.h"
320#include "nsIFrame.h"
321#include "nsIGlobalObject.h"
322#include "nsIHttpChannel.h"
323#include "nsIHttpChannelInternal.h"
324#include "nsIIOService.h"
325#include "nsIImageLoadingContent.h"
326#include "nsIInputStream.h"
327#include "nsIInterfaceRequestor.h"
328#include "nsIInterfaceRequestorUtils.h"
329#include "nsILoadContext.h"
330#include "nsILoadGroup.h"
331#include "nsILoadInfo.h"
332#include "nsIMIMEService.h"
333#include "nsINetUtil.h"
334#include "nsINode.h"
335#include "nsIObjectLoadingContent.h"
336#include "nsIObserver.h"
337#include "nsIObserverService.h"
338#include "nsIParserUtils.h"
339#include "nsIPermissionManager.h"
340#include "nsIPrincipal.h"
341#include "nsIProperties.h"
342#include "nsIProtocolHandler.h"
343#include "nsIRequest.h"
344#include "nsIRunnable.h"
345#include "nsIScreen.h"
346#include "nsIScriptError.h"
347#include "nsIScriptGlobalObject.h"
348#include "nsIScriptObjectPrincipal.h"
349#include "nsIScriptSecurityManager.h"
350#include "nsISerialEventTarget.h"
351#include "nsIStreamConverter.h"
352#include "nsIStreamConverterService.h"
353#include "nsIStringBundle.h"
354#include "nsISupports.h"
355#include "nsISupportsPrimitives.h"
356#include "nsISupportsUtils.h"
357#include "nsITransferable.h"
358#include "nsIURI.h"
359#include "nsIURIMutator.h"
360#include "nsTHashMap.h"
361#if defined(MOZ_THUNDERBIRD) || defined(MOZ_SUITE)
362#  include "nsIURIWithSpecialOrigin.h"
363#endif
364#include "nsIUserIdleServiceInternal.h"
365#include "nsIWeakReferenceUtils.h"
366#include "nsIWebNavigation.h"
367#include "nsIWebNavigationInfo.h"
368#include "nsIWidget.h"
369#include "nsIWindowMediator.h"
370#include "nsIXPConnect.h"
371#include "nsJSPrincipals.h"
372#include "nsJSUtils.h"
373#include "nsLayoutUtils.h"
374#include "nsLiteralString.h"
375#include "nsMargin.h"
376#include "nsMimeTypes.h"
377#include "nsNameSpaceManager.h"
378#include "nsNetCID.h"
379#include "nsNetUtil.h"
380#include "nsNodeInfoManager.h"
381#include "nsPIDOMWindow.h"
382#include "nsPIDOMWindowInlines.h"
383#include "nsParser.h"
384#include "nsParserConstants.h"
385#include "nsPoint.h"
386#include "nsPointerHashKeys.h"
387#include "nsPresContext.h"
388#include "nsQueryFrame.h"
389#include "nsQueryObject.h"
390#include "nsRange.h"
391#include "nsReadableUtils.h"
392#include "nsRefPtrHashtable.h"
393#include "nsSandboxFlags.h"
394#include "nsScriptSecurityManager.h"
395#include "nsServiceManagerUtils.h"
396#include "nsStreamUtils.h"
397#include "nsString.h"
398#include "nsStringBundle.h"
399#include "nsStringFlags.h"
400#include "nsStringFwd.h"
401#include "nsStringIterator.h"
402#include "nsStringStream.h"
403#include "nsTArray.h"
404#include "nsTLiteralString.h"
405#include "nsTPromiseFlatString.h"
406#include "nsTStringRepr.h"
407#include "nsTextNode.h"
408#include "nsThreadManager.h"
409#include "nsThreadUtils.h"
410#include "nsTreeSanitizer.h"
411#include "nsUGenCategory.h"
412#include "nsURLHelper.h"
413#include "nsUnicodeProperties.h"
414#include "nsVariant.h"
415#include "nsWhitespaceTokenizer.h"
416#include "nsWidgetsCID.h"
417#include "nsXPCOM.h"
418#include "nsXPCOMCID.h"
419#include "nsXULAppAPI.h"
420#include "nsXULElement.h"
421#include "nsXULPopupManager.h"
422#include "nscore.h"
423#include "prinrval.h"
424#include "xpcprivate.h"
425#include "xpcpublic.h"
426 
427#if defined(XP_WIN)
428// Undefine LoadImage to prevent naming conflict with Windows.
429#  undef LoadImage
430#endif
431 
432extern "C" int MOZ_XMLTranslateEntity(const char* ptr, const char* end,
433                                      const char** next, char16_t* result);
434extern "C" int MOZ_XMLCheckQName(const char* ptr, const char* end, int ns_aware,
435                                 const char** colon);
436 
437using namespace mozilla::dom;
438using namespace mozilla::ipc;
439using namespace mozilla::gfx;
440using namespace mozilla::layers;
441using namespace mozilla::widget;
442using namespace mozilla;
443 
444const char kLoadAsData[] = "loadAsData";
445 
446nsIXPConnect* nsContentUtils::sXPConnect;
447nsIScriptSecurityManager* nsContentUtils::sSecurityManager;
448nsIPrincipal* nsContentUtils::sSystemPrincipal;
449nsIPrincipal* nsContentUtils::sNullSubjectPrincipal;
450nsIPrincipal* nsContentUtils::sFingerprintingProtectionPrincipal;
451nsIConsoleService* nsContentUtils::sConsoleService;
452 
453static nsTHashMap<RefPtr<nsAtom>, EventNameMapping>* sAtomEventTable;
454static nsTHashMap<nsStringHashKey, EventNameMapping>* sStringEventTable;
455static nsTArray<RefPtr<nsAtom>>* sUserDefinedEvents;
456nsIStringBundleService* nsContentUtils::sStringBundleService;
457 
458static constexpr size_t kPropertiesFileCount =
459    static_cast<size_t>(PropertiesFile::COUNT);
460 
461static StaticRefPtr<nsIStringBundle> sStringBundles[kPropertiesFileCount];
462 
463nsIContentPolicy* nsContentUtils::sContentPolicyService;
464bool nsContentUtils::sTriedToGetContentPolicy = false;
465StaticRefPtr<nsIBidiKeyboard> nsContentUtils::sBidiKeyboard;
466uint32_t nsContentUtils::sScriptBlockerCount = 0;
467uint32_t nsContentUtils::sDOMNodeRemovedSuppressCount = 0;
468AutoTArray<nsCOMPtr<nsIRunnable>, 8>* nsContentUtils::sBlockedScriptRunners =
469    nullptr;
470uint32_t nsContentUtils::sRunnersCountAtFirstBlocker = 0;
471nsIInterfaceRequestor* nsContentUtils::sSameOriginChecker = nullptr;
472 
473bool nsContentUtils::sIsHandlingKeyBoardEvent = false;
474 
475nsString* nsContentUtils::sShiftText = nullptr;
476nsString* nsContentUtils::sControlText = nullptr;
477nsString* nsContentUtils::sCommandOrWinText = nullptr;
478nsString* nsContentUtils::sAltText = nullptr;
479nsString* nsContentUtils::sModifierSeparator = nullptr;
480 
481bool nsContentUtils::sInitialized = false;
482#ifndef RELEASE_OR_BETA
483bool nsContentUtils::sBypassCSSOMOriginCheck = false;
484#endif
485 
486nsCString* nsContentUtils::sJSScriptBytecodeMimeType = nullptr;
487nsCString* nsContentUtils::sJSModuleBytecodeMimeType = nullptr;
488 
489nsContentUtils::UserInteractionObserver*
490    nsContentUtils::sUserInteractionObserver = nullptr;
491 
492nsHtml5StringParser* nsContentUtils::sHTMLFragmentParser = nullptr;
493nsParser* nsContentUtils::sXMLFragmentParser = nullptr;
494nsIFragmentContentSink* nsContentUtils::sXMLFragmentSink = nullptr;
495bool nsContentUtils::sFragmentParsingActive = false;
496 
497mozilla::LazyLogModule nsContentUtils::gResistFingerprintingLog(
498    "nsResistFingerprinting");
499mozilla::LazyLogModule nsContentUtils::sDOMDumpLog("Dump");
500// Log when "input" and "beforeinput" events are dispatched or enqueued with
501// InputEvent:3,sync.
502mozilla::LazyLogModule gInputEventLog("InputEvent");
503 
504int32_t nsContentUtils::sInnerOrOuterWindowCount = 0;
505uint32_t nsContentUtils::sInnerOrOuterWindowSerialCounter = 0;
506 
507#define INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM( \
508    aResultType, aMethodName, aTreeKind, ...)           \
509  template aResultType aMethodName<aTreeKind>(__VA_ARGS__);
510 
511#define INSTANTIATE_METHOD_FOR_CONST_RANGE_BOUNDARY_REFS(                \
512    aResultType, aMethodName, aTreeKind, ...)                            \
513  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
514      aResultType, aMethodName, aTreeKind, const RangeBoundary&,         \
515      const RangeBoundary&, __VA_ARGS__)                                 \
516  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
517      aResultType, aMethodName, aTreeKind, const RangeBoundary&,         \
518      const RawRangeBoundary&, __VA_ARGS__)                              \
519  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
520      aResultType, aMethodName, aTreeKind, const RawRangeBoundary&,      \
521      const RangeBoundary&, __VA_ARGS__)                                 \
522  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
523      aResultType, aMethodName, aTreeKind, const RawRangeBoundary&,      \
524      const RawRangeBoundary&, __VA_ARGS__)                              \
525  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
526      aResultType, aMethodName, aTreeKind, const ConstRawRangeBoundary&, \
527      const ConstRawRangeBoundary&, __VA_ARGS__)                         \
528  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
529      aResultType, aMethodName, aTreeKind, const ConstRawRangeBoundary&, \
530      const RangeBoundary&, __VA_ARGS__)                                 \
531  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
532      aResultType, aMethodName, aTreeKind, const ConstRawRangeBoundary&, \
533      const RawRangeBoundary&, __VA_ARGS__)                              \
534  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
535      aResultType, aMethodName, aTreeKind, const RangeBoundary&,         \
536      const ConstRawRangeBoundary&, __VA_ARGS__)                         \
537  INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM(                        \
538      aResultType, aMethodName, aTreeKind, const RawRangeBoundary&,      \
539      const ConstRawRangeBoundary&, __VA_ARGS__)
540 
541INSTANTIATE_METHOD_FOR_CONST_RANGE_BOUNDARY_REFS(Maybe<int32_t>,
542                                                 nsContentUtils::ComparePoints,
543                                                 TreeKind::DOM,
544                                                 NodeIndexCache*);
545INSTANTIATE_METHOD_FOR_CONST_RANGE_BOUNDARY_REFS(Maybe<int32_t>,
546                                                 nsContentUtils::ComparePoints,
547                                                 TreeKind::ShadowIncludingDOM,
548                                                 NodeIndexCache*);
549INSTANTIATE_METHOD_FOR_CONST_RANGE_BOUNDARY_REFS(Maybe<int32_t>,
550                                                 nsContentUtils::ComparePoints,
551                                                 TreeKind::Flat,
552                                                 NodeIndexCache*);
553INSTANTIATE_METHOD_FOR_CONST_RANGE_BOUNDARY_REFS(Maybe<int32_t>,
554                                                 nsContentUtils::ComparePoints,
555                                                 TreeKind::FlatForSelection,
556                                                 NodeIndexCache*);
557 
558#undef INSTANTIATE_METHOD_FOR_CONST_RANGE_BOUNDARY_REFS
559#undef INSTANTIATE_METHOD_FOR_TREEKIND_TEMPLATE_PARAM
560 
561// Subset of
562// http://www.whatwg.org/specs/web-apps/current-work/#autofill-field-name
563enum AutocompleteUnsupportedFieldName : uint8_t {
564#define AUTOCOMPLETE_UNSUPPORTED_FIELD_NAME(name_, value_) \
565  eAutocompleteUnsupportedFieldName_##name_,
566#include "AutocompleteFieldList.h"
567#undef AUTOCOMPLETE_UNSUPPORTED_FIELD_NAME
568};
569 
570enum AutocompleteNoPersistFieldName : uint8_t {
571#define AUTOCOMPLETE_NO_PERSIST_FIELD_NAME(name_, value_) \
572  eAutocompleteNoPersistFieldName_##name_,
573#include "AutocompleteFieldList.h"
574#undef AUTOCOMPLETE_NO_PERSIST_FIELD_NAME
575};
576 
577enum AutocompleteUnsupportFieldContactHint : uint8_t {
578#define AUTOCOMPLETE_UNSUPPORTED_FIELD_CONTACT_HINT(name_, value_) \
579  eAutocompleteUnsupportedFieldContactHint_##name_,
580#include "AutocompleteFieldList.h"
581#undef AUTOCOMPLETE_UNSUPPORTED_FIELD_CONTACT_HINT
582};
583 
584enum AutocompleteFieldName : uint8_t {
585#define AUTOCOMPLETE_FIELD_NAME(name_, value_) eAutocompleteFieldName_##name_,
586#define AUTOCOMPLETE_CONTACT_FIELD_NAME(name_, value_) \
587  AUTOCOMPLETE_FIELD_NAME(name_, value_)
588#include "AutocompleteFieldList.h"
589#undef AUTOCOMPLETE_FIELD_NAME
590#undef AUTOCOMPLETE_CONTACT_FIELD_NAME
591};
592 
593enum AutocompleteFieldHint : uint8_t {
594#define AUTOCOMPLETE_FIELD_HINT(name_, value_) eAutocompleteFieldHint_##name_,
595#include "AutocompleteFieldList.h"
596#undef AUTOCOMPLETE_FIELD_HINT
597};
598 
599enum AutocompleteFieldContactHint : uint8_t {
600#define AUTOCOMPLETE_FIELD_CONTACT_HINT(name_, value_) \
601  eAutocompleteFieldContactHint_##name_,
602#include "AutocompleteFieldList.h"
603#undef AUTOCOMPLETE_FIELD_CONTACT_HINT
604};
605 
606enum AutocompleteCredentialType : uint8_t {
607#define AUTOCOMPLETE_CREDENTIAL_TYPE(name_, value_) \
608  eAutocompleteCredentialType_##name_,
609#include "AutocompleteFieldList.h"
610#undef AUTOCOMPLETE_CREDENTIAL_TYPE
611};
612 
613enum AutocompleteCategory {
614#define AUTOCOMPLETE_CATEGORY(name_, value_) eAutocompleteCategory_##name_,
615#include "AutocompleteFieldList.h"
616#undef AUTOCOMPLETE_CATEGORY
617};
618 
619static constexpr nsAttrValue::EnumTableEntry
620    kAutocompleteUnsupportedFieldNameTable[]{
621#define AUTOCOMPLETE_UNSUPPORTED_FIELD_NAME(name_, value_) \
622  {value_, eAutocompleteUnsupportedFieldName_##name_},
623#include "AutocompleteFieldList.h"
624#undef AUTOCOMPLETE_UNSUPPORTED_FIELD_NAME
625    };
626 
627static constexpr nsAttrValue::EnumTableEntry
628    kAutocompleteNoPersistFieldNameTable[] = {
629#define AUTOCOMPLETE_NO_PERSIST_FIELD_NAME(name_, value_) \
630  {value_, eAutocompleteNoPersistFieldName_##name_},
631#include "AutocompleteFieldList.h"
632#undef AUTOCOMPLETE_NO_PERSIST_FIELD_NAME
633};
634static constexpr nsAttrValue::EnumTableEntry
635    kAutocompleteUnsupportedContactFieldHintTable[] = {
636#define AUTOCOMPLETE_UNSUPPORTED_FIELD_CONTACT_HINT(name_, value_) \
637  {value_, eAutocompleteUnsupportedFieldContactHint_##name_},
638#include "AutocompleteFieldList.h"
639#undef AUTOCOMPLETE_UNSUPPORTED_FIELD_CONTACT_HINT
640};
641 
642static constexpr nsAttrValue::EnumTableEntry kAutocompleteFieldNameTable[] = {
643#define AUTOCOMPLETE_FIELD_NAME(name_, value_) \
644  {value_, eAutocompleteFieldName_##name_},
645#include "AutocompleteFieldList.h"
646#undef AUTOCOMPLETE_FIELD_NAME
647};
648 
649static constexpr nsAttrValue::EnumTableEntry
650    kAutocompleteContactFieldNameTable[] = {
651#define AUTOCOMPLETE_CONTACT_FIELD_NAME(name_, value_) \
652  {value_, eAutocompleteFieldName_##name_},
653#include "AutocompleteFieldList.h"
654#undef AUTOCOMPLETE_CONTACT_FIELD_NAME
655};
656 
657static constexpr nsAttrValue::EnumTableEntry kAutocompleteFieldHintTable[] = {
658#define AUTOCOMPLETE_FIELD_HINT(name_, value_) \
659  {value_, eAutocompleteFieldHint_##name_},
660#include "AutocompleteFieldList.h"
661#undef AUTOCOMPLETE_FIELD_HINT
662};
663 
664static constexpr nsAttrValue::EnumTableEntry
665    kAutocompleteContactFieldHintTable[] = {
666#define AUTOCOMPLETE_FIELD_CONTACT_HINT(name_, value_) \
667  {value_, eAutocompleteFieldContactHint_##name_},
668#include "AutocompleteFieldList.h"
669#undef AUTOCOMPLETE_FIELD_CONTACT_HINT
670};
671 
672static constexpr nsAttrValue::EnumTableEntry
673    kAutocompleteCredentialTypeTable[] = {
674#define AUTOCOMPLETE_CREDENTIAL_TYPE(name_, value_) \
675  {value_, eAutocompleteCredentialType_##name_},
676#include "AutocompleteFieldList.h"
677#undef AUTOCOMPLETE_CREDENTIAL_TYPE
678};
679 
680namespace {
681 
682// Non-owning list of the managers nodes store themselves; the managers remove
683// themselves from it when deleted.  Documents keep their manager in
684// Document::mListenerManager and are not in this list.
685constinit DoublyLinkedList<EventListenerManager> sNodeEventListenerManagers;
686 
687// A global hashtable to for keeping the arena alive for cross docGroup node
688// adoption.
689static nsRefPtrHashtable<nsPtrHashKey<const nsINode>, mozilla::dom::DOMArena>*
690    sDOMArenaHashtable;
691 
692class SameOriginCheckerImpl final : public nsIChannelEventSink,
693                                    public nsIInterfaceRequestor {
694  ~SameOriginCheckerImpl() = default;
695 
696  NS_DECL_ISUPPORTSpublic: virtual nsresult QueryInterface(const nsIID& aIID
, void** aInstancePtr) override; virtual MozExternalRefCountType
 AddRef(void) override; virtual MozExternalRefCountType Release
(void) override; using HasThreadSafeRefCnt = std::false_type;
 protected: nsAutoRefCnt mRefCnt; nsAutoOwningThread _mOwningThread
; public:
697  NS_DECL_NSICHANNELEVENTSINKvirtual nsresult AsyncOnChannelRedirect(nsIChannel *oldChannel
, nsIChannel *newChannel, uint32_t flags, nsIAsyncVerifyRedirectCallback
 *callback) override;
698  NS_DECL_NSIINTERFACEREQUESTORvirtual nsresult GetInterface(const nsIID & uuid, void * *
 result) override;
699};
700 
701}  // namespace
702 
703void AutoSuppressEventHandling::SuppressDocument(Document* aDoc) {
704  // Note: Document::SuppressEventHandling will also automatically suppress
705  // event handling for any in-process sub-documents. However, since we need
706  // to deal with cases where remote BrowsingContexts may be interleaved
707  // with in-process ones, we still need to walk the entire tree ourselves.
708  // This may be slightly redundant in some cases, but since event handling
709  // suppressions maintain a count of current blockers, it does not cause
710  // any problems.
711  aDoc->SuppressEventHandling();
712}
713 
714void AutoSuppressEventHandling::UnsuppressDocument(Document* aDoc) {
715  aDoc->UnsuppressEventHandlingAndFireEvents(true);
716}
717 
718AutoSuppressEventHandling::~AutoSuppressEventHandling() {
719  UnsuppressDocuments();
720}
721 
722void AutoSuppressEventHandlingAndSuspend::SuppressDocument(Document* aDoc) {
723  AutoSuppressEventHandling::SuppressDocument(aDoc);
724  if (nsCOMPtr<nsPIDOMWindowInner> win = aDoc->GetInnerWindow()) {
725    win->Suspend();
726    mWindows.AppendElement(win);
727  }
728}
729 
730AutoSuppressEventHandlingAndSuspend::~AutoSuppressEventHandlingAndSuspend() {
731  for (const auto& win : mWindows) {
732    win->Resume();
733  }
734}
735 
736// The following structs are used by CommonAncestors. They must have:
737// NodeType, Get(), ComputeChildIndex(), GetChildCount() and CanComputeIndex().
738// If CanComputeIndex() returns false, ComputeChildIndex() nor GetChildCount()
739// is not used by CommonAncestors to assert the odd result.
740 
741/**
742 * GetParentNodeForComparison is used for implementing
743 * nsContentUtils::ComparePoints and its relatives and helpers.
744 */
745template <TreeKind aKind>
746struct GetParentNodeForComparison {
747  using NodeType = nsINode;
748  static NodeType* Get(const NodeType* aNode) {
749    if constexpr (aKind == TreeKind::DOM) {
750      return aNode->GetParentNode();
751    }
752    // We want to list up ShadowRoot as the parent of a child of ShadowRoot and
753    // its host as the parent of the ShadowRoot. GetFlattenedTreeParentNode()
754    // won't return ShadowRoot so that we cannot use
755    // nsINode::GetParentNode<aKind>() here.
756    if constexpr (ShouldHandleAssignedNodesOnSlot<aKind>()) {
757      if (aNode->IsContent()) {
758        if (HTMLSlotElement* const slot =
759                aNode->AsContent()->GetAssignedSlot<aKind>()) {
760          return slot;
761        }
762        // FIXME: If aNode->GetParentNode()->GetShadowRoot<aKind>() returns
763        // non-nullptr, we should always return nullptr here. However, if aKind
764        // is TreeKind::FlatForSelection, we cannot do that because
765        // GetFlattenedTreeParentNode<nsINode::eForSelection>() returns the
766        // shadow host element as-is. Therefore, we do the strict behavior only
767        // here causes assertion failures with the extant tests. This should
768        // be fixed in bug 2014622.
769        if constexpr (aKind != TreeKind::FlatForSelection) {
770          // If we're handling a flattened tree, we should return nullptr if the
771          // node is not part of a flattened tree.
772          if (nsINode* const parentNode = aNode->GetParentNode()) {
773            if (parentNode->GetShadowRoot<aKind>()) {
774              return nullptr;
775            }
776          }
777        }
778      }
779    }
780    return aNode->GetParentOrShadowHostNode();
781  }
782  static Maybe<uint32_t> ComputeChildIndex(const NodeType* aParent,
783                                           const nsIContent* aPossibleChild) {
784    if constexpr (aKind == TreeKind::ShadowIncludingDOM) {
785      return aParent->ComputeIndexOf(aPossibleChild);
786    } else {
787      return aParent->ComputeIndexOf<aKind>(aPossibleChild);
788    }
789  }
790  static uint32_t GetChildCount(const NodeType* aParent) {
791    if constexpr (aKind == TreeKind::ShadowIncludingDOM) {
792      return aParent->GetChildCount();
793    } else {
794      return aParent->GetChildCount<aKind>();
795    }
796  }
797  constexpr static bool CanComputeIndex() {
798    // The helpers of nsContentUtils::ComparePoints() and relatives require
799    // ComputeChildIndex() and GetChildCount(). Therefore, we implement them and
800    // return true.
801    return true;
802  }
803};
804 
805/**
806 * GetParentNode is used for implementing
807 * nsContentUtils::GetClosestCommonInclusiveAncestor().
808 */
809using GetParentNode = GetParentNodeForComparison<TreeKind::DOM>;
810 
811/**
812 * GetParentOrShadowHostNode is used for implementing
813 * nsContentUtils::GetClosestCommonShadowIncludingInclusiveAncestor().
814 */
815struct GetParentOrShadowHostNode {
816  using NodeType = nsINode;
817  static NodeType* Get(const NodeType* aNode) {
818    return aNode->GetParentOrShadowHostNode();
819  }
820  static Maybe<uint32_t> ComputeChildIndex(const NodeType* aParent,
821                                           const nsIContent* aPossibleChild) {
822    return aParent->ComputeIndexOf(aPossibleChild);
823  }
824  static uint32_t GetChildCount(const NodeType* aParent) {
825    return aParent->GetChildCount();
826  }
827  constexpr static bool CanComputeIndex() {
828    // Neither ComputeChildIndex() nor GetChildCount() is required by
829    // nsContentUtils::GetClosestCommonShadowIncludingInclusiveAncestor(), but
830    // let's implement them to make CommonAncestors asserts the odd situations
831    // so that return true.
832    return true;
833  }
834};
835 
836/**
837 * GetFlattenedTreeParent is used for implementing
838 * nsContentUtils::GetCommonFlattenedTreeAncestor().
839 */
840struct GetFlattenedTreeParent {
841  using NodeType = nsIContent;
842  static NodeType* Get(const NodeType* aContent) {
843    return aContent->GetFlattenedTreeParent();
844  }
845  static Maybe<uint32_t> ComputeChildIndex(const NodeType* aParent,
846                                           const nsIContent* aPossibleChild) {
847    return aParent->ComputeFlatTreeIndexOf(aPossibleChild);
848  }
849  static uint32_t GetChildCount(const NodeType* aParent) {
850    return aParent->GetFlatTreeChildCount();
851  }
852  constexpr static bool CanComputeIndex() {
853    // Neither ComputeChildIndex() nor GetChildCount() is required by
854    // nsContentUtils::GetCommonFlattenedTreeAncestor(), but let's implement
855    // them to make CommonAncestors asserts the odd situations so that return
856    // true.
857    return true;
858  }
859};
860 
861/**
862 * GetFlattenedTreeParentNodeForSelection is used for implementing
863 * nsContentUtils::GetCommonFlattenedTreeAncestorForSelection().
864 */
865struct GetFlattenedTreeParentNodeForSelection {
866  using NodeType = nsINode;
867  static NodeType* Get(const NodeType* aNode) {
868    return aNode->GetFlattenedTreeParentNodeForSelection();
869  }
870  static Maybe<uint32_t> ComputeChildIndex(const NodeType* aParent,
871                                           const nsIContent* aPossibleChild) {
872    return aParent->ComputeFlatTreeForSelectionIndexOf(aPossibleChild);
873  }
874  static uint32_t GetChildCount(const NodeType* aParent) {
875    return aParent->GetFlatTreeForSelectionChildCount();
876  }
877  constexpr static bool CanComputeIndex() {
878    // Neither ComputeChildIndex() nor GetChildCount() is required by
879    // nsContentUtils::GetCommonFlattenedTreeAncestorForSelection(), but let's
880    // implement them to make CommonAncestors asserts the odd situations so that
881    // return true.
882    return true;
883  }
884};
885 
886/**
887 * GetFlattenedTreeParentElementForStyle is used for implementing
888 * nsContentUtils::GetCommonFlattenedTreeAncestorForStyle().
889 */
890struct GetFlattenedTreeParentElementForStyle {
891  using NodeType = Element;
892  static NodeType* Get(const NodeType* aElement) {
893    return aElement->GetFlattenedTreeParentElementForStyle();
894  }
895  static Maybe<uint32_t> ComputeChildIndex(const NodeType* aParent,
896                                           const nsIContent* aPossibleChild) {
897    return Nothing();
898  }
899  static uint32_t GetChildCount(const NodeType* aParent) {
900    return 0;  // This should be called only when CanComputeIndex() returns true
901  }
902  constexpr static bool CanComputeIndex() {
903    // Neither ComputeChildIndex() nor GetChildCount() is required by
904    // nsContentUtils::GetCommonFlattenedTreeAncestorForStyle() and there is no
905    // API to get child count nor compute index of a child in the flattened tree
906    // for style. Therefore, we don't implement them so that return false.
907    return false;
908  }
909};
910 
911/**
912 * GetParentBrowserParent is used for implementing
913 * nsContentUtils::GetCommonBrowserParentAncestor().
914 */
915struct GetParentBrowserParent {
916  using NodeType = BrowserParent;
917  static NodeType* Get(const NodeType* aBrowserParent) {
918    return aBrowserParent->GetBrowserBridgeParent()
919               ? aBrowserParent->GetBrowserBridgeParent()->Manager()
920               : nullptr;
921  }
922  static Maybe<uint32_t> ComputeChildIndex(const NodeType* aParent,
923                                           const nsIContent* aPossibleChild) {
924    return Nothing();
925  }
926  static uint32_t GetChildCount(const NodeType* aParent) {
927    return 0;  // This should be called only when CanComputeIndex() returns true
928  }
929  constexpr static bool CanComputeIndex() {
930    // Neither ComputeChildIndex() nor GetChildCount() is required by
931    // nsContentUtils::GetCommonBrowserParentAncestor() and there is no API to
932    // get child count of a BrowserParent nor compute index of a child of
933    // BrowserParent. Therefore, we don't implement them so that return false.
934    return false;
935  }
936};
937 
938template <TreeKind aKind>
939static bool ChildNodeIsInShadowDOMHostedByParent(const nsINode* aParent,
940                                                 const nsINode* aChild) {
941  ShadowRoot* const shadowRoot = aParent->GetShadowRoot<aKind>();
942  if (!shadowRoot) {
943    return false;
944  }
945  // We already checked whether aChild is in a shadow in the tree kind.
946  // Therefore, we don't need to use GetContainingShadowForSelection() here.
947  return shadowRoot == aChild->GetContainingShadow();
948}
949 
950// If we're comparing 2 DOM points in TreeKind::ShadowIncludingDOM mode, we want
951// to compare the direct children of the parent node even if the parent is a
952// shadow host. So, we want to compare them as TreeKind::DOM.
953template <TreeKind aKind>
954constexpr TreeKind TreeKindToCompareChildren() {
955  if constexpr (aKind == TreeKind::ShadowIncludingDOM) {
956    return TreeKind::DOM;
957  } else {
958    return aKind;
959  }
960}
961 
962template <class GetParentStruct>
963class MOZ_STACK_CLASS CommonAncestors final {
964 public:
965  using NodeType = GetParentStruct::NodeType;
966 
967  /**
968   * @param aNode1 A DOM node or something which may have ancestors.
969   * @param aNode2 Another DOM node or something.
970   * @param aGetParentStruct A struct containing static GetParent(),
971   * ComputeChildIndex(), GetChildCount() and CanComputeIndex(). If
972   * CanComputeIndex() returns false, ComputeChildIndex() nor GetChildCount() is
973   * never used.
974   */
975  CommonAncestors(const NodeType& aNode1, const NodeType& aNode2) {
976#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED1
977    mAssertNoGC.emplace();
978#endif  // #ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
979 
980    AppendInclusiveAncestors(const_cast<NodeType*>(&aNode1),
981                             mInclusiveAncestors1);
982    AppendInclusiveAncestors(const_cast<NodeType*>(&aNode2),
983                             mInclusiveAncestors2);
984 
985    // Find where the parent chain differs
986    size_t depth1 = mInclusiveAncestors1.Length();
987    size_t depth2 = mInclusiveAncestors2.Length();
988    const size_t shorterLength = std::min(depth1, depth2);
989    NodeType** const inclusiveAncestors1 = mInclusiveAncestors1.Elements();
990    NodeType** const inclusiveAncestors2 = mInclusiveAncestors2.Elements();
991    for ([[maybe_unused]] const size_t unused : IntegerRange(shorterLength)) {
992      NodeType* const inclusiveAncestor1 = inclusiveAncestors1[--depth1];
993      NodeType* const inclusiveAncestor2 = inclusiveAncestors2[--depth2];
994      if (inclusiveAncestor1 != inclusiveAncestor2) {
995        MOZ_ASSERT_IF(mClosestCommonAncestor,do { if (mClosestCommonAncestor) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(inclusiveAncestor1
 == GetClosestCommonAncestorChild1())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(inclusiveAncestor1 == GetClosestCommonAncestorChild1
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("inclusiveAncestor1 == GetClosestCommonAncestorChild1()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 996); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inclusiveAncestor1 == GetClosestCommonAncestorChild1()"
 ")"); do { MOZ_CrashSequence(__null, 996); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
996                      inclusiveAncestor1 == GetClosestCommonAncestorChild1())do { if (mClosestCommonAncestor) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(inclusiveAncestor1
 == GetClosestCommonAncestorChild1())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(inclusiveAncestor1 == GetClosestCommonAncestorChild1
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("inclusiveAncestor1 == GetClosestCommonAncestorChild1()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 996); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inclusiveAncestor1 == GetClosestCommonAncestorChild1()"
 ")"); do { MOZ_CrashSequence(__null, 996); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
997        MOZ_ASSERT_IF(mClosestCommonAncestor,do { if (mClosestCommonAncestor) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(inclusiveAncestor2
 == GetClosestCommonAncestorChild2())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(inclusiveAncestor2 == GetClosestCommonAncestorChild2
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("inclusiveAncestor2 == GetClosestCommonAncestorChild2()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 998); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inclusiveAncestor2 == GetClosestCommonAncestorChild2()"
 ")"); do { MOZ_CrashSequence(__null, 998); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
998                      inclusiveAncestor2 == GetClosestCommonAncestorChild2())do { if (mClosestCommonAncestor) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(inclusiveAncestor2
 == GetClosestCommonAncestorChild2())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(inclusiveAncestor2 == GetClosestCommonAncestorChild2
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("inclusiveAncestor2 == GetClosestCommonAncestorChild2()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 998); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inclusiveAncestor2 == GetClosestCommonAncestorChild2()"
 ")"); do { MOZ_CrashSequence(__null, 998); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
999        return;
1000      }
1001      mNumberOfCommonAncestors++;
1002      mClosestCommonAncestor = inclusiveAncestor1;
1003    }
1004    MOZ_ASSERT(mClosestCommonAncestor)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mClosestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mClosestCommonAncestor))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("mClosestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1004); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mClosestCommonAncestor" ")"); do { MOZ_CrashSequence
(__null, 1004); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
1005    MOZ_ASSERT(mNumberOfCommonAncestors)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mNumberOfCommonAncestors)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mNumberOfCommonAncestors))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("mNumberOfCommonAncestors"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1005); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mNumberOfCommonAncestors" ")"); do { MOZ_CrashSequence
(__null, 1005); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
1006    MOZ_ASSERT(!depth1 || !depth2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!depth1 || !depth2)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!depth1 || !depth2))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("!depth1 || !depth2"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1006); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!depth1 || !depth2" ")"); do { MOZ_CrashSequence
(__null, 1006); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
1007    MOZ_ASSERT_IF(!depth1, !GetClosestCommonAncestorChild1())do { if (!depth1) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(!GetClosestCommonAncestorChild1())>::isValid,
 "invalid assertion condition"); if ((__builtin_expect(!!(!(!
!(!GetClosestCommonAncestorChild1()))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("!GetClosestCommonAncestorChild1()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1007); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!GetClosestCommonAncestorChild1()" ")"); do
 { MOZ_CrashSequence(__null, 1007); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false); } } while (false
);
1008    MOZ_ASSERT_IF(depth1, GetClosestCommonAncestorChild1())do { if (depth1) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(GetClosestCommonAncestorChild1())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetClosestCommonAncestorChild1
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetClosestCommonAncestorChild1()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1008); AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetClosestCommonAncestorChild1()"
 ")"); do { MOZ_CrashSequence(__null, 1008); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
1009    MOZ_ASSERT_IF(!depth2, !GetClosestCommonAncestorChild2())do { if (!depth2) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(!GetClosestCommonAncestorChild2())>::isValid,
 "invalid assertion condition"); if ((__builtin_expect(!!(!(!
!(!GetClosestCommonAncestorChild2()))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("!GetClosestCommonAncestorChild2()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1009); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!GetClosestCommonAncestorChild2()" ")"); do
 { MOZ_CrashSequence(__null, 1009); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false); } } while (false
);
1010    MOZ_ASSERT_IF(depth2, GetClosestCommonAncestorChild2())do { if (depth2) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(GetClosestCommonAncestorChild2())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetClosestCommonAncestorChild2
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetClosestCommonAncestorChild2()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1010); AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetClosestCommonAncestorChild2()"
 ")"); do { MOZ_CrashSequence(__null, 1010); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
1011  }
1012 
1013#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED1
1014  ~CommonAncestors() { MOZ_DIAGNOSTIC_ASSERT(!mMutationGuard.Mutated(0))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!mMutationGuard.Mutated(0))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!mMutationGuard.Mutated(0)))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!mMutationGuard.Mutated(0)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1014); AnnotateMozCrashReason
("MOZ_DIAGNOSTIC_ASSERT" "(" "!mMutationGuard.Mutated(0)" ")"
); do { MOZ_CrashSequence(__null, 1014); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); }
1015#endif  // #ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
1016 
1017  [[nodiscard]] NodeType* GetClosestCommonAncestor() const {
1018    return mClosestCommonAncestor;
1019  }
1020  [[nodiscard]] NodeType* GetClosestCommonAncestorChild1() const {
1021    return GetClosestCommonAncestorChild(mInclusiveAncestors1);
1022  }
1023  [[nodiscard]] NodeType* GetClosestCommonAncestorChild2() const {
1024    return GetClosestCommonAncestorChild(mInclusiveAncestors2);
1025  }
1026 
1027  template <TreeKind aKind>
1028  void WarnIfClosestCommonAncestorChildrenAreNotInChildList() const {
1029    WarnIfClosestCommonAncestorChildIsNotInChildList<aKind>(
1030        mInclusiveAncestors1);
1031    WarnIfClosestCommonAncestorChildIsNotInChildList<aKind>(
1032        mInclusiveAncestors2);
1033  }
1034 
1035 private:
1036  static void AppendInclusiveAncestors(NodeType* aNode,
1037                                       nsTArray<NodeType*>& aArrayOfParents) {
1038    NodeType* node = aNode;
1039    while (node) {
1040      aArrayOfParents.AppendElement(node);
1041      node = GetParentStruct::Get(node);
1042    }
1043  }
1044 
1045  Maybe<size_t> GetClosestCommonAncestorChildIndex(
1046      const nsTArray<NodeType*>& aInclusiveAncestors) const {
1047    if (!mClosestCommonAncestor ||
1048        aInclusiveAncestors.Length() <= mNumberOfCommonAncestors) {
1049      return Nothing();
1050    }
1051    return Some((aInclusiveAncestors.Length() - 1)  // last index
1052                - mNumberOfCommonAncestors);  // before closest common ancestor
1053  }
1054 
1055  [[nodiscard]] NodeType* GetClosestCommonAncestorChild(
1056      const nsTArray<NodeType*>& aInclusiveAncestors) const {
1057    const Maybe<size_t> index =
1058        GetClosestCommonAncestorChildIndex(aInclusiveAncestors);
1059    if (index.isNothing()) {
1060      MOZ_ASSERT_IF(mClosestCommonAncestor,do { if (mClosestCommonAncestor) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(aInclusiveAncestors
.Length() == mNumberOfCommonAncestors)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aInclusiveAncestors.Length()
 == mNumberOfCommonAncestors))), 0))) { do { } while (false);
 MOZ_ReportAssertionFailure("aInclusiveAncestors.Length() == mNumberOfCommonAncestors"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1061); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aInclusiveAncestors.Length() == mNumberOfCommonAncestors"
 ")"); do { MOZ_CrashSequence(__null, 1061); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
1061                    aInclusiveAncestors.Length() == mNumberOfCommonAncestors)do { if (mClosestCommonAncestor) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(aInclusiveAncestors
.Length() == mNumberOfCommonAncestors)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aInclusiveAncestors.Length()
 == mNumberOfCommonAncestors))), 0))) { do { } while (false);
 MOZ_ReportAssertionFailure("aInclusiveAncestors.Length() == mNumberOfCommonAncestors"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1061); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aInclusiveAncestors.Length() == mNumberOfCommonAncestors"
 ")"); do { MOZ_CrashSequence(__null, 1061); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
1062      return nullptr;
1063    }
1064    NodeType* const child = aInclusiveAncestors[*index];
1065    MOZ_ASSERT(child)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(child)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(child))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("child", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1065); AnnotateMozCrashReason("MOZ_ASSERT" "(" "child" ")")
; do { MOZ_CrashSequence(__null, 1065); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
1066    MOZ_ASSERT(GetParentStruct::Get(child) == mClosestCommonAncestor)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentStruct::Get(child) == mClosestCommonAncestor
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentStruct::Get(child) == mClosestCommonAncestor
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"GetParentStruct::Get(child) == mClosestCommonAncestor", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1066); AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetParentStruct::Get(child) == mClosestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 1066); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
1067    return child;
1068  }
1069 
1070  template <TreeKind aKind>
1071  void WarnIfClosestCommonAncestorChildIsNotInChildList(
1072      const nsTArray<NodeType*>& aInclusiveAncestors) const {
1073#ifdef DEBUG1
1074    if constexpr (std::is_base_of_v<nsINode, NodeType>) {
1075      if (!GetParentStruct::CanComputeIndex()) {
1076        return;
1077      }
1078      const nsIContent* const child = nsIContent::FromNodeOrNull(
1079          GetClosestCommonAncestorChild(aInclusiveAncestors));
1080      if (!child) {
1081        return;
1082      }
1083 
1084      if (child->IsShadowRoot() ||
1085          (ShouldHandleAssignedNodesOnSlot<aKind>() &&
1086           child->GetAssignedSlot<aKind>() &&
1087           mClosestCommonAncestor != child->GetAssignedSlot<aKind>())) {
1088        return;
1089      }
1090 
1091      if (MOZ_LIKELY((__builtin_expect(!!(GetParentStruct::ComputeChildIndex(mClosestCommonAncestor
, child) .isSome()), 1))
1092              GetParentStruct::ComputeChildIndex(mClosestCommonAncestor, child)(__builtin_expect(!!(GetParentStruct::ComputeChildIndex(mClosestCommonAncestor
, child) .isSome()), 1))
1093                  .isSome())(__builtin_expect(!!(GetParentStruct::ComputeChildIndex(mClosestCommonAncestor
, child) .isSome()), 1))) {
1094        return;
1095      }
1096      if constexpr (aKind == TreeKind::ShadowIncludingDOM) {
1097        NS_WARNING(ToString(ConstRawRangeBoundary::FromChild(*child)).c_str())NS_DebugBreak(NS_DEBUG_WARNING, ToString(ConstRawRangeBoundary
::FromChild(*child)).c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1097);
1098        const nsINode* const parentOrShadowHostNode =
1099            child->GetParentOrShadowHostNode();
1100        NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1101            fmt::format(NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1102                "\nparent={}\nlength={}\nshadow={}",NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1103                ToString(RefPtr{parentOrShadowHostNode}).c_str(),NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1104                parentOrShadowHostNode->GetChildCount(),NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1105                ToString(NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1106                    RefPtr{parentOrShadowHostNodeNS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1107                               ? parentOrShadowHostNode->GetShadowRoot<aKind>()NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1108                               : nullptr})NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1109                    .c_str())NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110)
1110                .c_str())NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "\nparent={}\nlength={}\nshadow={}"
, ToString(RefPtr{parentOrShadowHostNode}).c_str(), parentOrShadowHostNode
->GetChildCount(), ToString( RefPtr{parentOrShadowHostNode
 ? parentOrShadowHostNode->GetShadowRoot<aKind>() : nullptr
}) .c_str()) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1110);
1111      } else if constexpr (aKind == TreeKind::FlatForSelection) {
1112        if (child->GetParentNode() == mClosestCommonAncestor) {
1113          // It's okay to compare the non-assigned children of a shadow host
1114          // with the shadow root or another non-assigned child if we're
1115          // handling the flattened tree for selection.
1116          if (mClosestCommonAncestor->GetShadowRootForSelection()) {
1117            return;
1118          }
1119          // It's okay to compare the fallback content of a <slot> which has
1120          // some assigned nodes and a parent of the flattened tree if we're
1121          // handling the flattened tree for selection.
1122          if (mClosestCommonAncestor
1123                  ->GetAsHTMLSlotElementIfFilledForSelection()) {
1124            return;
1125          }
1126        }
1127      }
1128      const Maybe<size_t> index =
1129          GetClosestCommonAncestorChildIndex(aInclusiveAncestors);
1130      NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1131          fmt::format(NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1132              "The caller cannot compare the position of the child "NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1133              "of the common ancestor due to not in the child list "NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1134              "of the common ancestor (aKind={}):\n"NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1135              "  {}\n"      // common ancestorNS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1136              "    + {}\n"  // common ancestor childNS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1137              "{}",         // child of common ancestor child if there isNS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1138              aKind, ToString(*mClosestCommonAncestor), ToString(*child),NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1139              *index ? fmt::format("       + {}",NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1140                                   ToString(*aInclusiveAncestors[*index - 1]))NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1141                     : "")NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142)
1142              .c_str())NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "The caller cannot compare the position of the child "
 "of the common ancestor due to not in the child list " "of the common ancestor (aKind={}):\n"
 "  {}\n" "    + {}\n" "{}", aKind, ToString(*mClosestCommonAncestor
), ToString(*child), *index ? fmt::format("       + {}", ToString
(*aInclusiveAncestors[*index - 1])) : "") .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1142);
1143    }
1144#endif
1145  }
1146 
1147  AutoTArray<NodeType*, 30> mInclusiveAncestors1;
1148  AutoTArray<NodeType*, 30> mInclusiveAncestors2;
1149  NodeType* mClosestCommonAncestor = nullptr;
1150  uint32_t mNumberOfCommonAncestors = 0;
1151 
1152#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED1
1153  nsMutationGuard mMutationGuard;
1154  Maybe<JS::AutoAssertNoGC> mAssertNoGC;
1155#endif
1156};
1157 
1158/**
1159 * This class is used to determine whether or not the user is currently
1160 * interacting with the browser. It listens to observer events to toggle the
1161 * value of the sUserActive static.
1162 *
1163 * This class is an internal implementation detail.
1164 * nsContentUtils::GetUserIsInteracting() should be used to access current
1165 * user interaction status.
1166 */
1167class nsContentUtils::UserInteractionObserver final
1168    : public nsIObserver,
1169      public BackgroundHangAnnotator {
1170 public:
1171  NS_DECL_ISUPPORTSpublic: virtual nsresult QueryInterface(const nsIID& aIID
, void** aInstancePtr) override; virtual MozExternalRefCountType
 AddRef(void) override; virtual MozExternalRefCountType Release
(void) override; using HasThreadSafeRefCnt = std::false_type;
 protected: nsAutoRefCnt mRefCnt; nsAutoOwningThread _mOwningThread
; public:
1172  NS_DECL_NSIOBSERVERvirtual nsresult Observe(nsISupports *aSubject, const char * aTopic
, const char16_t * aData) override;
1173 
1174  void Init();
1175  void Shutdown();
1176  void AnnotateHang(BackgroundHangAnnotations& aAnnotations) override;
1177 
1178  static Atomic<bool> sUserActive;
1179 
1180 private:
1181  ~UserInteractionObserver() = default;
1182};
1183 
1184static constexpr nsLiteralCString kRfpPrefs[] = {
1185    "privacy.resistFingerprinting"_ns,
1186    "privacy.resistFingerprinting.pbmode"_ns,
1187    "privacy.fingerprintingProtection"_ns,
1188    "privacy.fingerprintingProtection.pbmode"_ns,
1189    "privacy.fingerprintingProtection.overrides"_ns,
1190    "privacy.baselineFingerprintingProtection"_ns,
1191    "privacy.baselineFingerprintingProtection.overrides"_ns,
1192};
1193 
1194static void RecomputeResistFingerprintingAllDocs(const char*, void*) {
1195  AutoTArray<RefPtr<Document>, 64> allDocuments;
1196  Document::GetAllInProcessDocuments(allDocuments);
1197  for (auto& doc : allDocuments) {
1198    doc->RecomputeResistFingerprinting(
1199        /* aForceRefreshRTPCallerType= */ true);
1200    if (auto* pc = doc->GetPresContext()) {
1201      pc->MediaFeatureValuesChanged(
1202          {MediaFeatureChangeReason::PreferenceChange},
1203          MediaFeatureChangePropagation::JustThisDocument);
1204    }
1205  }
1206}
1207 
1208// static
1209nsresult nsContentUtils::Init() {
1210  if (sInitialized) {
1211    NS_WARNING("Init() called twice")NS_DebugBreak(NS_DEBUG_WARNING, "Init() called twice", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1211);
1212 
1213    return NS_OK;
1214  }
1215 
1216  nsHTMLTags::AddRefTable();
1217 
1218  sXPConnect = nsXPConnect::XPConnect();
1219  // We hold a strong ref to sXPConnect to ensure that it does not go away until
1220  // nsLayoutStatics::Shutdown is happening.  Otherwise ~nsXPConnect can be
1221  // triggered by xpcModuleDtor late in shutdown and cause crashes due to
1222  // various stuff already being torn down by then.  Note that this means that
1223  // we are effectively making sure that if we leak nsLayoutStatics then we also
1224  // leak nsXPConnect.
1225  NS_ADDREF(sXPConnect)(sXPConnect)->AddRef();
1226 
1227  sSecurityManager = nsScriptSecurityManager::GetScriptSecurityManager();
1228  if (!sSecurityManager) return NS_ERROR_FAILURE;
1229  NS_ADDREF(sSecurityManager)(sSecurityManager)->AddRef();
1230 
1231  sSecurityManager->GetSystemPrincipal(&sSystemPrincipal);
1232  MOZ_ASSERT(sSystemPrincipal)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(sSystemPrincipal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(sSystemPrincipal))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("sSystemPrincipal"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1232); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "sSystemPrincipal" ")"); do { MOZ_CrashSequence
(__null, 1232); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
1233 
1234  RefPtr<NullPrincipal> nullPrincipal =
1235      NullPrincipal::CreateWithoutOriginAttributes();
1236  if (!nullPrincipal) {
1237    return NS_ERROR_FAILURE;
1238  }
1239 
1240  nullPrincipal.forget(&sNullSubjectPrincipal);
1241 
1242  RefPtr<nsIPrincipal> fingerprintingProtectionPrincipal =
1243      BasePrincipal::CreateContentPrincipal(
1244          "about:fingerprintingprotection"_ns);
1245  if (!fingerprintingProtectionPrincipal) {
1246    return NS_ERROR_FAILURE;
1247  }
1248 
1249  fingerprintingProtectionPrincipal.forget(&sFingerprintingProtectionPrincipal);
1250 
1251  if (!InitializeEventTable()) return NS_ERROR_FAILURE;
1252 
1253  sBlockedScriptRunners = new AutoTArray<nsCOMPtr<nsIRunnable>, 8>;
1254 
1255#ifndef RELEASE_OR_BETA
1256  sBypassCSSOMOriginCheck = getenv("MOZ_BYPASS_CSSOM_ORIGIN_CHECK");
1257#endif
1258 
1259  Element::InitCCCallbacks();
1260 
1261  RefPtr<nsRFPService> rfpService = nsRFPService::GetOrCreate();
1262  MOZ_ASSERT(rfpService)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(rfpService)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(rfpService))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("rfpService", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1262); AnnotateMozCrashReason("MOZ_ASSERT" "(" "rfpService"
 ")"); do { MOZ_CrashSequence(__null, 1262); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
1263 
1264  if (XRE_IsParentProcess()) {
1265    AsyncPrecreateStringBundles();
1266 
1267#if defined(MOZ_WIDGET_ANDROID)
1268    // On Android, at-shutdown ping submission isn't reliable
1269    // (( because, on Android, we usually get killed, not shut down )).
1270    // To have a chance at submitting the ping, aim for idle after startup.
1271    nsresult rv = NS_DispatchToCurrentThreadQueue(
1272        NS_NewRunnableFunction(
1273            "AndroidUseCounterPingSubmitter",
1274            []() { glean_pings::UseCounters.Submit("idle_startup"_ns); }),
1275        EventQueuePriority::Idle);
1276    // This is mostly best-effort, so if it goes awry, just log.
1277    (void)NS_WARN_IF(NS_FAILED(rv))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(rv
)), 0))), "NS_FAILED(rv)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1277);
1278#endif  // defined(MOZ_WIDGET_ANDROID)
1279 
1280    RunOnShutdown(
1281        [&] { glean_pings::UseCounters.Submit("app_shutdown_confirmed"_ns); },
1282        ShutdownPhase::AppShutdownConfirmed);
1283 
1284    // On child process, this is initialized in ContentChild.
1285    LookAndFeel::EnsureInit();
1286  }
1287 
1288  RefPtr<UserInteractionObserver> uio = new UserInteractionObserver();
1289  uio->Init();
1290  uio.forget(&sUserInteractionObserver);
1291 
1292  for (const auto& pref : kRfpPrefs) {
1293    Preferences::RegisterCallback(RecomputeResistFingerprintingAllDocs, pref);
1294  }
1295 
1296  mozilla::dom::ReportDeliver::Initialize();
1297 
1298  sInitialized = true;
1299 
1300  return NS_OK;
1301}
1302 
1303bool nsContentUtils::InitJSBytecodeMimeType() {
1304  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1304); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 1304); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
1305  MOZ_ASSERT(!sJSScriptBytecodeMimeType)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!sJSScriptBytecodeMimeType)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!sJSScriptBytecodeMimeType))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!sJSScriptBytecodeMimeType"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1305); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!sJSScriptBytecodeMimeType" ")"); do { MOZ_CrashSequence
(__null, 1305); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
1306  MOZ_ASSERT(!sJSModuleBytecodeMimeType)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!sJSModuleBytecodeMimeType)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!sJSModuleBytecodeMimeType))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!sJSModuleBytecodeMimeType"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1306); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!sJSModuleBytecodeMimeType" ")"); do { MOZ_CrashSequence
(__null, 1306); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
1307 
1308  JS::BuildIdCharVector jsBuildId;
1309  if (!JS::GetScriptTranscodingBuildId(&jsBuildId)) {
1310    return false;
1311  }
1312 
1313  nsDependentCSubstring jsBuildIdStr(jsBuildId.begin(), jsBuildId.length());
1314  sJSScriptBytecodeMimeType =
1315      new nsCString("javascript/moz-script-bytecode-"_ns + jsBuildIdStr);
1316  sJSModuleBytecodeMimeType =
1317      new nsCString("javascript/moz-module-bytecode-"_ns + jsBuildIdStr);
1318  return true;
1319}
1320 
1321void nsContentUtils::GetShiftText(nsAString& text) {
1322  if (!sShiftText) InitializeModifierStrings();
1323  text.Assign(*sShiftText);
1324}
1325 
1326void nsContentUtils::GetControlText(nsAString& text) {
1327  if (!sControlText) InitializeModifierStrings();
1328  text.Assign(*sControlText);
1329}
1330 
1331void nsContentUtils::GetCommandOrWinText(nsAString& text) {
1332  if (!sCommandOrWinText) {
1333    InitializeModifierStrings();
1334  }
1335  text.Assign(*sCommandOrWinText);
1336}
1337 
1338void nsContentUtils::GetAltText(nsAString& text) {
1339  if (!sAltText) InitializeModifierStrings();
1340  text.Assign(*sAltText);
1341}
1342 
1343void nsContentUtils::GetModifierSeparatorText(nsAString& text) {
1344  if (!sModifierSeparator) InitializeModifierStrings();
1345  text.Assign(*sModifierSeparator);
1346}
1347 
1348void nsContentUtils::InitializeModifierStrings() {
1349  // load the display strings for the keyboard accelerators
1350  nsCOMPtr<nsIStringBundleService> bundleService =
1351      mozilla::components::StringBundle::Service();
1352  nsCOMPtr<nsIStringBundle> bundle;
1353  DebugOnly<nsresult> rv = NS_OK;
1354  if (bundleService) {
1355    rv = bundleService->CreateBundle(
1356        "chrome://global-platform/locale/platformKeys.properties",
1357        getter_AddRefs(bundle));
1358  }
1359 
1360  NS_ASSERTION(do { if (!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1
))) && bundle)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "chrome://global/locale/platformKeys.properties could not be loaded"
, "NS_SUCCEEDED(rv) && bundle", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1362); MOZ_PretendNoReturn(); } } while (0)
1361      NS_SUCCEEDED(rv) && bundle,do { if (!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1
))) && bundle)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "chrome://global/locale/platformKeys.properties could not be loaded"
, "NS_SUCCEEDED(rv) && bundle", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1362); MOZ_PretendNoReturn(); } } while (0)
1362      "chrome://global/locale/platformKeys.properties could not be loaded")do { if (!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1
))) && bundle)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "chrome://global/locale/platformKeys.properties could not be loaded"
, "NS_SUCCEEDED(rv) && bundle", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1362); MOZ_PretendNoReturn(); } } while (0);
1363  nsAutoString shiftModifier;
1364  nsAutoString commandOrWinModifier;
1365  nsAutoString altModifier;
1366  nsAutoString controlModifier;
1367  nsAutoString modifierSeparator;
1368  if (bundle) {
1369    // macs use symbols for each modifier key, so fetch each from the bundle,
1370    // which also covers i18n
1371    bundle->GetStringFromName("VK_SHIFT", shiftModifier);
1372    bundle->GetStringFromName("VK_COMMAND_OR_WIN", commandOrWinModifier);
1373    bundle->GetStringFromName("VK_ALT", altModifier);
1374    bundle->GetStringFromName("VK_CONTROL", controlModifier);
1375    bundle->GetStringFromName("MODIFIER_SEPARATOR", modifierSeparator);
1376  }
1377  // if any of these don't exist, we get  an empty string
1378  sShiftText = new nsString(std::move(shiftModifier));
1379  sCommandOrWinText = new nsString(std::move(commandOrWinModifier));
1380  sAltText = new nsString(std::move(altModifier));
1381  sControlText = new nsString(std::move(controlModifier));
1382  sModifierSeparator = new nsString(std::move(modifierSeparator));
1383}
1384 
1385mozilla::EventClassID nsContentUtils::GetEventClassIDFromMessage(
1386    EventMessage aEventMessage) {
1387  switch (aEventMessage) {
1388#define MESSAGE_TO_EVENT(name_, message_, type_, struct_) \
1389  case message_:                                          \
1390    return struct_;
1391#include "mozilla/EventNameList.inc"
1392#undef MESSAGE_TO_EVENT
1393    default:
1394      MOZ_ASSERT_UNREACHABLE("Invalid event message?")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Invalid event message?" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1394); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") ("
 "MOZ_ASSERT_UNREACHABLE: " "Invalid event message?" ")"); do
 { MOZ_CrashSequence(__null, 1394); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false);
1395      return eBasicEventClass;
1396  }
1397}
1398 
1399bool nsContentUtils::IsExternalProtocol(nsIURI* aURI) {
1400  bool doesNotReturnData = false;
1401  nsresult rv = NS_URIChainHasFlags(
1402      aURI, nsIProtocolHandler::URI_DOES_NOT_RETURN_DATA, &doesNotReturnData);
1403  return NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))) && doesNotReturnData;
1404}
1405 
1406/* static */
1407nsAtom* nsContentUtils::GetEventTypeFromMessage(EventMessage aEventMessage) {
1408  switch (aEventMessage) {
1409#define MESSAGE_TO_EVENT(name_, message_, type_, struct_) \
1410  case message_:                                          \
1411    return nsGkAtoms::on##name_;
1412#include "mozilla/EventNameList.inc"
1413#undef MESSAGE_TO_EVENT
1414    default:
1415      return nullptr;
1416  }
1417}
1418 
1419/* static */
1420already_AddRefed<nsAtom> nsContentUtils::GetEventType(
1421    const WidgetEvent* aEvent) {
1422  RefPtr<nsAtom> typeAtom =
1423      aEvent->mMessage == eUnidentifiedEvent
1424          ? aEvent->mSpecifiedEventType.get()
1425          : nsContentUtils::GetEventTypeFromMessage(aEvent->mMessage);
1426  return typeAtom.forget();
1427}
1428 
1429bool nsContentUtils::InitializeEventTable() {
1430  NS_ASSERTION(!sAtomEventTable, "EventTable already initialized!")do { if (!(!sAtomEventTable)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "EventTable already initialized!", "!sAtomEventTable", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1430); MOZ_PretendNoReturn(); } } while (0);
1431  NS_ASSERTION(!sStringEventTable, "EventTable already initialized!")do { if (!(!sStringEventTable)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "EventTable already initialized!", "!sStringEventTable", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 1431); MOZ_PretendNoReturn(); } } while (0);
1432 
1433  static const EventNameMapping eventArray[] = {
1434#define EVENT(name_, _message, _type, _class) \
1435  {nsGkAtoms::on##name_, _type, _message, _class},
1436#define WINDOW_ONLY_EVENT EVENT
1437#define DOCUMENT_ONLY_EVENTEVENT EVENT
1438#define NON_IDL_EVENT EVENT
1439#include "mozilla/EventNameList.inc"
1440#undef WINDOW_ONLY_EVENT
1441#undef NON_IDL_EVENT
1442#undef EVENT
1443      {nullptr}};
1444 
1445  sAtomEventTable =
1446      new nsTHashMap<RefPtr<nsAtom>, EventNameMapping>(std::size(eventArray));
1447  sStringEventTable =
1448      new nsTHashMap<nsStringHashKey, EventNameMapping>(std::size(eventArray));
1449  sUserDefinedEvents = new nsTArray<RefPtr<nsAtom>>(64);
1450 
1451  // Subtract one from the length because of the trailing null
1452  for (uint32_t i = 0; i < std::size(eventArray) - 1; ++i) {
1453    MOZ_ASSERT(!sAtomEventTable->Contains(eventArray[i].mAtom),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!sAtomEventTable->Contains(eventArray[i].mAtom))>
::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(!sAtomEventTable->Contains(eventArray[i].mAtom)))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!sAtomEventTable->Contains(eventArray[i].mAtom)"
 " (" "Double-defining event name; fix your EventNameList.inc"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1454
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!sAtomEventTable->Contains(eventArray[i].mAtom)"
 ") (" "Double-defining event name; fix your EventNameList.inc"
 ")"); do { MOZ_CrashSequence(__null, 1454); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
1454               "Double-defining event name; fix your EventNameList.inc")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!sAtomEventTable->Contains(eventArray[i].mAtom))>
::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(!sAtomEventTable->Contains(eventArray[i].mAtom)))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!sAtomEventTable->Contains(eventArray[i].mAtom)"
 " (" "Double-defining event name; fix your EventNameList.inc"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1454
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!sAtomEventTable->Contains(eventArray[i].mAtom)"
 ") (" "Double-defining event name; fix your EventNameList.inc"
 ")"); do { MOZ_CrashSequence(__null, 1454); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
1455    sAtomEventTable->InsertOrUpdate(eventArray[i].mAtom, eventArray[i]);
1456    sStringEventTable->InsertOrUpdate(
1457        Substring(nsDependentAtomString(eventArray[i].mAtom), 2),
1458        eventArray[i]);
1459  }
1460 
1461  return true;
1462}
1463 
1464void nsContentUtils::InitializeTouchEventTable() {
1465  static bool sEventTableInitialized = false;
1466  if (!sEventTableInitialized && sAtomEventTable && sStringEventTable) {
1467    sEventTableInitialized = true;
1468    static const EventNameMapping touchEventArray[] = {
1469#define EVENT(name_, _message, _type, _class)
1470#define TOUCH_EVENT(name_, _message, _type, _class) \
1471  {nsGkAtoms::on##name_, _type, _message, _class},
1472#include "mozilla/EventNameList.inc"
1473#undef TOUCH_EVENT
1474#undef EVENT
1475        {nullptr}};
1476    // Subtract one from the length because of the trailing null
1477    for (uint32_t i = 0; i < std::size(touchEventArray) - 1; ++i) {
1478      sAtomEventTable->InsertOrUpdate(touchEventArray[i].mAtom,
1479                                      touchEventArray[i]);
1480      sStringEventTable->InsertOrUpdate(
1481          Substring(nsDependentAtomString(touchEventArray[i].mAtom), 2),
1482          touchEventArray[i]);
1483    }
1484  }
1485}
1486 
1487static bool Is8bit(const nsAString& aString) {
1488  static const char16_t EIGHT_BIT = char16_t(~0x00FF);
1489 
1490  for (nsAString::const_char_iterator start = aString.BeginReading(),
1491                                      end = aString.EndReading();
1492       start != end; ++start) {
1493    if (*start & EIGHT_BIT) {
1494      return false;
1495    }
1496  }
1497 
1498  return true;
1499}
1500 
1501nsresult nsContentUtils::Btoa(const nsAString& aBinaryData,
1502                              nsAString& aAsciiBase64String) {
1503  if (!Is8bit(aBinaryData)) {
1504    aAsciiBase64String.Truncate();
1505    return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
1506  }
1507 
1508  return Base64Encode(aBinaryData, aAsciiBase64String);
1509}
1510 
1511nsresult nsContentUtils::Atob(const nsAString& aAsciiBase64String,
1512                              nsAString& aBinaryData) {
1513  if (!Is8bit(aAsciiBase64String)) {
1514    aBinaryData.Truncate();
1515    return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
1516  }
1517 
1518  const char16_t* start = aAsciiBase64String.BeginReading();
1519  const char16_t* cur = start;
1520  const char16_t* end = aAsciiBase64String.EndReading();
1521  bool hasWhitespace = false;
1522 
1523  while (cur < end) {
1524    if (nsContentUtils::IsHTMLWhitespace(*cur)) {
1525      hasWhitespace = true;
1526      break;
1527    }
1528    cur++;
1529  }
1530 
1531  nsresult rv;
1532 
1533  if (hasWhitespace) {
1534    nsString trimmedString;
1535 
1536    if (!trimmedString.SetCapacity(aAsciiBase64String.Length(), fallible)) {
1537      return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
1538    }
1539 
1540    trimmedString.Append(start, cur - start);
1541 
1542    while (cur < end) {
1543      if (!nsContentUtils::IsHTMLWhitespace(*cur)) {
1544        trimmedString.Append(*cur);
1545      }
1546      cur++;
1547    }
1548    rv = Base64Decode(trimmedString, aBinaryData);
1549  } else {
1550    rv = Base64Decode(aAsciiBase64String, aBinaryData);
1551  }
1552 
1553  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0))) && rv == NS_ERROR_INVALID_ARG) {
1554    return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
1555  }
1556  return rv;
1557}
1558 
1559bool nsContentUtils::IsAutocompleteEnabled(mozilla::dom::Element* aElement) {
1560  MOZ_ASSERT(aElement, "aElement should not be null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElement)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aElement))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aElement" " (" "aElement should not be null!"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 1560
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aElement" ") (" "aElement should not be null!"
 ")"); do { MOZ_CrashSequence(__null, 1560); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
1561 
1562  nsAutoString autocomplete;
1563 
1564  if (auto* input = HTMLInputElement::FromNodeOrNull(aElement)) {
1565    input->GetAutocomplete(autocomplete);
1566  } else if (auto* textarea = HTMLTextAreaElement::FromNodeOrNull(aElement)) {
1567    textarea->GetAutocomplete(autocomplete);
1568  }
1569 
1570  if (autocomplete.IsEmpty()) {
1571    auto* control = nsGenericHTMLFormControlElement::FromNode(aElement);
1572    auto* form = control->GetFormInternal();
1573    if (!form) {
1574      return true;
1575    }
1576 
1577    form->GetAutocomplete(autocomplete);
1578  }
1579 
1580  return !autocomplete.EqualsLiteral("off");
1581}
1582 
1583nsContentUtils::AutocompleteAttrState
1584nsContentUtils::SerializeAutocompleteAttribute(
1585    const nsAttrValue* aAttr, nsAString& aResult,
1586    AutocompleteAttrState aCachedState) {
1587  if (!aAttr ||
1588      aCachedState == nsContentUtils::eAutocompleteAttrState_Invalid) {
1589    return aCachedState;
1590  }
1591 
1592  if (aCachedState == nsContentUtils::eAutocompleteAttrState_Valid) {
1593    uint32_t atomCount = aAttr->GetAtomCount();
1594    for (uint32_t i = 0; i < atomCount; i++) {
1595      if (i != 0) {
1596        aResult.Append(' ');
1597      }
1598      aResult.Append(nsDependentAtomString(aAttr->AtomAt(i)));
1599    }
1600    nsContentUtils::ASCIIToLower(aResult);
1601    return aCachedState;
1602  }
1603 
1604  aResult.Truncate();
1605 
1606  mozilla::dom::AutocompleteInfo info;
1607  AutocompleteAttrState state =
1608      InternalSerializeAutocompleteAttribute(aAttr, info);
1609  if (state == eAutocompleteAttrState_Valid) {
1610    // Concatenate the info fields.
1611    aResult = info.mSection;
1612 
1613    if (!info.mAddressType.IsEmpty()) {
1614      if (!aResult.IsEmpty()) {
1615        aResult += ' ';
1616      }
1617      aResult += info.mAddressType;
1618    }
1619 
1620    if (!info.mContactType.IsEmpty()) {
1621      if (!aResult.IsEmpty()) {
1622        aResult += ' ';
1623      }
1624      aResult += info.mContactType;
1625    }
1626 
1627    if (!info.mFieldName.IsEmpty()) {
1628      if (!aResult.IsEmpty()) {
1629        aResult += ' ';
1630      }
1631      aResult += info.mFieldName;
1632    }
1633 
1634    // The autocomplete attribute value "webauthn" is interpreted as both a
1635    // field name and a credential type. The corresponding IDL-exposed autofill
1636    // value is "webauthn", not "webauthn webauthn".
1637    if (!info.mCredentialType.IsEmpty() &&
1638        !(info.mCredentialType.Equals(u"webauthn"_ns) &&
1639          info.mCredentialType.Equals(aResult))) {
1640      if (!aResult.IsEmpty()) {
1641        aResult += ' ';
1642      }
1643      aResult += info.mCredentialType;
1644    }
1645  }
1646 
1647  return state;
1648}
1649 
1650nsContentUtils::AutocompleteAttrState
1651nsContentUtils::SerializeAutocompleteAttribute(
1652    const nsAttrValue* aAttr, mozilla::dom::AutocompleteInfo& aInfo,
1653    AutocompleteAttrState aCachedState, bool aGrantAllValidValue) {
1654  if (!aAttr ||
1655      aCachedState == nsContentUtils::eAutocompleteAttrState_Invalid) {
1656    return aCachedState;
1657  }
1658 
1659  return InternalSerializeAutocompleteAttribute(aAttr, aInfo,
1660                                                aGrantAllValidValue);
1661}
1662 
1663/**
1664 * Helper to validate the @autocomplete tokens.
1665 *
1666 * @return {AutocompleteAttrState} The state of the attribute (invalid/valid).
1667 */
1668nsContentUtils::AutocompleteAttrState
1669nsContentUtils::InternalSerializeAutocompleteAttribute(
1670    const nsAttrValue* aAttrVal, mozilla::dom::AutocompleteInfo& aInfo,
1671    bool aGrantAllValidValue) {
1672  // No autocomplete attribute so we are done
1673  if (!aAttrVal) {
1674    return eAutocompleteAttrState_Invalid;
1675  }
1676 
1677  uint32_t numTokens = aAttrVal->GetAtomCount();
1678  if (!numTokens || numTokens > INT32_MAX(2147483647)) {
1679    return eAutocompleteAttrState_Invalid;
1680  }
1681 
1682  uint32_t index = numTokens - 1;
1683  nsString tokenString = nsDependentAtomString(aAttrVal->AtomAt(index));
1684  AutocompleteCategory category;
1685  nsAttrValue enumValue;
1686  nsAutoString credentialTypeStr;
1687 
1688  bool result = enumValue.ParseEnumValue(
1689      tokenString, kAutocompleteCredentialTypeTable, false);
1690  if (result) {
1691    if (!enumValue.Equals(u"webauthn"_ns, eIgnoreCase) || numTokens > 5) {
1692      return eAutocompleteAttrState_Invalid;
1693    }
1694    enumValue.ToString(credentialTypeStr);
1695    ASCIIToLower(credentialTypeStr);
1696    // category is Credential and the indexth token is "webauthn"
1697    if (index == 0) {
1698      aInfo.mFieldName.Assign(credentialTypeStr);
1699      aInfo.mCredentialType.Assign(credentialTypeStr);
1700      return eAutocompleteAttrState_Valid;
1701    }
1702 
1703    --index;
1704    tokenString = nsDependentAtomString(aAttrVal->AtomAt(index));
1705 
1706    // Only the Normal and Contact categories are allowed with webauthn
1707    //  - disallow Credential
1708    if (enumValue.ParseEnumValue(tokenString, kAutocompleteCredentialTypeTable,
1709                                 false)) {
1710      return eAutocompleteAttrState_Invalid;
1711    }
1712    //  - disallow Off and Automatic
1713    if (enumValue.ParseEnumValue(tokenString, kAutocompleteFieldNameTable,
1714                                 false)) {
1715      if (enumValue.Equals(u"off"_ns, eIgnoreCase) ||
1716          enumValue.Equals(u"on"_ns, eIgnoreCase)) {
1717        return eAutocompleteAttrState_Invalid;
1718      }
1719    }
1720 
1721    // Proceed to process the remaining tokens as if "webauthn" was not present.
1722    // We need to decrement numTokens to enforce the correct per-category limits
1723    // on the maximum number of tokens.
1724    --numTokens;
1725  }
1726 
1727  bool unsupported = false;
1728  if (!aGrantAllValidValue) {
1729    unsupported = enumValue.ParseEnumValue(
1730        tokenString, kAutocompleteUnsupportedFieldNameTable, false);
1731    if (unsupported) {
1732      return eAutocompleteAttrState_Invalid;
1733    }
1734  }
1735 
1736  nsAutoString fieldNameStr;
1737  result =
1738      enumValue.ParseEnumValue(tokenString, kAutocompleteFieldNameTable, false);
1739 
1740  if (result) {
1741    // Off/Automatic/Normal categories.
1742    if (enumValue.Equals(u"off"_ns, eIgnoreCase) ||
1743        enumValue.Equals(u"on"_ns, eIgnoreCase)) {
1744      if (numTokens > 1) {
1745        return eAutocompleteAttrState_Invalid;
1746      }
1747      enumValue.ToString(fieldNameStr);
1748      ASCIIToLower(fieldNameStr);
1749      aInfo.mFieldName.Assign(fieldNameStr);
1750      aInfo.mCredentialType.Assign(credentialTypeStr);
1751      aInfo.mCanAutomaticallyPersist =
1752          !enumValue.Equals(u"off"_ns, eIgnoreCase);
1753      return eAutocompleteAttrState_Valid;
1754    }
1755 
1756    // Only allow on/off if form autofill @autocomplete values aren't enabled
1757    // and it doesn't grant all valid values.
1758    if (!StaticPrefs::dom_forms_autocomplete_formautofill() &&
1759        !aGrantAllValidValue) {
1760      return eAutocompleteAttrState_Invalid;
1761    }
1762 
1763    // Normal category
1764    if (numTokens > 3) {
1765      return eAutocompleteAttrState_Invalid;
1766    }
1767    category = eAutocompleteCategory_NORMAL;
1768  } else {  // Check if the last token is of the contact category instead.
1769    // Only allow on/off if form autofill @autocomplete values aren't enabled
1770    // and it doesn't grant all valid values.
1771    if (!StaticPrefs::dom_forms_autocomplete_formautofill() &&
1772        !aGrantAllValidValue) {
1773      return eAutocompleteAttrState_Invalid;
1774    }
1775 
1776    result = enumValue.ParseEnumValue(
1777        tokenString, kAutocompleteContactFieldNameTable, false);
1778    if (!result || numTokens > 4) {
1779      return eAutocompleteAttrState_Invalid;
1780    }
1781 
1782    category = eAutocompleteCategory_CONTACT;
1783  }
1784 
1785  enumValue.ToString(fieldNameStr);
1786  ASCIIToLower(fieldNameStr);
1787 
1788  aInfo.mFieldName.Assign(fieldNameStr);
1789  aInfo.mCredentialType.Assign(credentialTypeStr);
1790  aInfo.mCanAutomaticallyPersist = !enumValue.ParseEnumValue(
1791      tokenString, kAutocompleteNoPersistFieldNameTable, false);
1792 
1793  // We are done if this was the only token.
1794  if (numTokens == 1) {
1795    return eAutocompleteAttrState_Valid;
1796  }
1797 
1798  --index;
1799  tokenString = nsDependentAtomString(aAttrVal->AtomAt(index));
1800 
1801  if (category == eAutocompleteCategory_CONTACT) {
1802    if (!aGrantAllValidValue) {
1803      unsupported = enumValue.ParseEnumValue(
1804          tokenString, kAutocompleteUnsupportedContactFieldHintTable, false);
1805      if (unsupported) {
1806        return eAutocompleteAttrState_Invalid;
1807      }
1808    }
1809 
1810    nsAttrValue contactFieldHint;
1811    result = contactFieldHint.ParseEnumValue(
1812        tokenString, kAutocompleteContactFieldHintTable, false);
1813    if (result) {
1814      nsAutoString contactFieldHintString;
1815      contactFieldHint.ToString(contactFieldHintString);
1816      ASCIIToLower(contactFieldHintString);
1817      aInfo.mContactType.Assign(contactFieldHintString);
1818      if (index == 0) {
1819        return eAutocompleteAttrState_Valid;
1820      }
1821      --index;
1822      tokenString = nsDependentAtomString(aAttrVal->AtomAt(index));
1823    }
1824  }
1825 
1826  // Check for billing/shipping tokens
1827  nsAttrValue fieldHint;
1828  if (fieldHint.ParseEnumValue(tokenString, kAutocompleteFieldHintTable,
1829                               false)) {
1830    nsString fieldHintString;
1831    fieldHint.ToString(fieldHintString);
1832    ASCIIToLower(fieldHintString);
1833    aInfo.mAddressType.Assign(fieldHintString);
1834    if (index == 0) {
1835      return eAutocompleteAttrState_Valid;
1836    }
1837    --index;
1838    tokenString = nsDependentAtomString(aAttrVal->AtomAt(index));
1839  }
1840 
1841  // Check for section-* token
1842  const nsDependentSubstring& section = Substring(tokenString, 0, 8);
1843  if (section.LowerCaseEqualsASCII("section-")) {
1844    ASCIIToLower(tokenString);
1845    aInfo.mSection.Assign(tokenString);
1846    if (index == 0) {
1847      return eAutocompleteAttrState_Valid;
1848    }
1849  }
1850 
1851  // Clear the fields as the autocomplete attribute is invalid.
1852  aInfo.mSection.Truncate();
1853  aInfo.mAddressType.Truncate();
1854  aInfo.mContactType.Truncate();
1855  aInfo.mFieldName.Truncate();
1856  aInfo.mCredentialType.Truncate();
1857 
1858  return eAutocompleteAttrState_Invalid;
1859}
1860 
1861// Parse an integer according to HTML spec
1862template <class CharT>
1863int32_t nsContentUtils::ParseHTMLIntegerImpl(
1864    const CharT* aStart, const CharT* aEnd,
1865    ParseHTMLIntegerResultFlags* aResult) {
1866  int result = eParseHTMLInteger_NoFlags;
1867 
1868  const CharT* iter = aStart;
1869 
1870  while (iter != aEnd && nsContentUtils::IsHTMLWhitespace(*iter)) {
1871    result |= eParseHTMLInteger_NonStandard;
1872    ++iter;
1873  }
1874 
1875  if (iter == aEnd) {
1876    result |= eParseHTMLInteger_Error | eParseHTMLInteger_ErrorNoValue;
1877    *aResult = (ParseHTMLIntegerResultFlags)result;
1878    return 0;
1879  }
1880 
1881  int sign = 1;
1882  if (*iter == CharT('-')) {
1883    sign = -1;
1884    result |= eParseHTMLInteger_Negative;
1885    ++iter;
1886  } else if (*iter == CharT('+')) {
1887    result |= eParseHTMLInteger_NonStandard;
1888    ++iter;
1889  }
1890 
1891  bool foundValue = false;
1892  CheckedInt32 value = 0;
1893 
1894  // Check for leading zeros first.
1895  uint64_t leadingZeros = 0;
1896  while (iter != aEnd) {
1897    if (*iter != CharT('0')) {
1898      break;
1899    }
1900 
1901    ++leadingZeros;
1902    foundValue = true;
1903    ++iter;
1904  }
1905 
1906  while (iter != aEnd) {
1907    if (*iter >= CharT('0') && *iter <= CharT('9')) {
1908      value = (value * 10) + (*iter - CharT('0')) * sign;
1909      ++iter;
1910      if (!value.isValid()) {
1911        result |= eParseHTMLInteger_Error | eParseHTMLInteger_ErrorOverflow;
1912        break;
1913      }
1914      foundValue = true;
1915    } else {
1916      break;
1917    }
1918  }
1919 
1920  if (!foundValue) {
1921    result |= eParseHTMLInteger_Error | eParseHTMLInteger_ErrorNoValue;
1922  }
1923 
1924  if (value.isValid() &&
1925      ((leadingZeros > 1 || (leadingZeros == 1 && !(value == 0))) ||
1926       (sign == -1 && value == 0))) {
1927    result |= eParseHTMLInteger_NonStandard;
1928  }
1929 
1930  if (iter != aEnd) {
1931    result |= eParseHTMLInteger_DidNotConsumeAllInput;
1932  }
1933 
1934  *aResult = (ParseHTMLIntegerResultFlags)result;
1935  return value.isValid() ? value.value() : 0;
1936}
1937 
1938// Parse an integer according to HTML spec
1939int32_t nsContentUtils::ParseHTMLInteger(const char16_t* aStart,
1940                                         const char16_t* aEnd,
1941                                         ParseHTMLIntegerResultFlags* aResult) {
1942  return ParseHTMLIntegerImpl(aStart, aEnd, aResult);
1943}
1944 
1945int32_t nsContentUtils::ParseHTMLInteger(const char* aStart, const char* aEnd,
1946                                         ParseHTMLIntegerResultFlags* aResult) {
1947  return ParseHTMLIntegerImpl(aStart, aEnd, aResult);
1948}
1949 
1950Maybe<double> nsContentUtils::ParseHTMLFloatingPointNumber(
1951    const nsAString& aString) {
1952  // Check if it is a valid floating-point number first since the result of
1953  // nsString.ToDouble() is more lenient than the spec,
1954  // https://html.spec.whatwg.org/#valid-floating-point-number
1955  nsAString::const_iterator iter, end;
1956  aString.BeginReading(iter);
1957  aString.EndReading(end);
1958 
1959  if (iter == end) {
1960    return {};
1961  }
1962 
1963  if (*iter == char16_t('-') && ++iter == end) {
1964    return {};
1965  }
1966 
1967  if (IsAsciiDigit(*iter)) {
1968    for (; iter != end && IsAsciiDigit(*iter); ++iter);
1969  } else if (*iter == char16_t('.')) {
1970    // Do nothing, jumps to fraction part
1971  } else {
1972    return {};
1973  }
1974 
1975  // Fraction
1976  if (*iter == char16_t('.')) {
1977    ++iter;
1978    if (iter == end || !IsAsciiDigit(*iter)) {
1979      // U+002E FULL STOP character (.) must be followed by one or more ASCII
1980      // digits
1981      return {};
1982    }
1983 
1984    for (; iter != end && IsAsciiDigit(*iter); ++iter);
1985  }
1986 
1987  if (iter != end && (*iter == char16_t('e') || *iter == char16_t('E'))) {
1988    ++iter;
1989    if (*iter == char16_t('-') || *iter == char16_t('+')) {
1990      ++iter;
1991    }
1992 
1993    if (iter == end || !IsAsciiDigit(*iter)) {
1994      // Should have one or more ASCII digits
1995      return {};
1996    }
1997 
1998    for (; iter != end && IsAsciiDigit(*iter); ++iter);
1999  }
2000 
2001  if (iter != end) {
2002    return {};
2003  }
2004 
2005  nsresult rv;
2006  double result = PromiseFlatStringTPromiseFlatString<char16_t>(aString).ToDouble(&rv);
2007  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
2008    return {};
2009  }
2010  return Some(result);
2011}
2012 
2013#define SKIP_WHITESPACE(iter, end_iter, end_res)while ((iter) != (end_iter) && nsCRT::IsAsciiSpace(*(
iter))) { ++(iter); } if ((iter) == (end_iter)) { return (end_res
); }                 \
2014  while ((iter) != (end_iter) && nsCRT::IsAsciiSpace(*(iter))) { \
2015    ++(iter);                                                    \
2016  }                                                              \
2017  if ((iter) == (end_iter)) {                                    \
2018    return (end_res);                                            \
2019  }
2020 
2021#define SKIP_ATTR_NAME(iter, end_iter)while ((iter) != (end_iter) && !nsCRT::IsAsciiSpace(*
(iter)) && *(iter) != '=') { ++(iter); }                            \
2022  while ((iter) != (end_iter) && !nsCRT::IsAsciiSpace(*(iter)) && \
2023         *(iter) != '=') {                                        \
2024    ++(iter);                                                     \
2025  }
2026 
2027bool nsContentUtils::GetPseudoAttributeValue(const nsString& aSource,
2028                                             nsAtom* aName, nsAString& aValue) {
2029  aValue.Truncate();
2030 
2031  const char16_t* start = aSource.get();
2032  const char16_t* end = start + aSource.Length();
2033  const char16_t* iter;
2034 
2035  while (start != end) {
2036    SKIP_WHITESPACE(start, end, false)while ((start) != (end) && nsCRT::IsAsciiSpace(*(start
))) { ++(start); } if ((start) == (end)) { return (false); }
2037    iter = start;
2038    SKIP_ATTR_NAME(iter, end)while ((iter) != (end) && !nsCRT::IsAsciiSpace(*(iter
)) && *(iter) != '=') { ++(iter); }
2039 
2040    if (start == iter) {
2041      return false;
2042    }
2043 
2044    // Remember the attr name.
2045    const nsDependentSubstring& attrName = Substring(start, iter);
2046 
2047    // Now check whether this is a valid name="value" pair.
2048    start = iter;
2049    SKIP_WHITESPACE(start, end, false)while ((start) != (end) && nsCRT::IsAsciiSpace(*(start
))) { ++(start); } if ((start) == (end)) { return (false); }
2050    if (*start != '=') {
2051      // No '=', so this is not a name="value" pair.  We don't know
2052      // what it is, and we have no way to handle it.
2053      return false;
2054    }
2055 
2056    // Have to skip the value.
2057    ++start;
2058    SKIP_WHITESPACE(start, end, false)while ((start) != (end) && nsCRT::IsAsciiSpace(*(start
))) { ++(start); } if ((start) == (end)) { return (false); }
2059    char16_t q = *start;
2060    if (q != kQuote && q != kApostrophe) {
2061      // Not a valid quoted value, so bail.
2062      return false;
2063    }
2064 
2065    ++start;  // Point to the first char of the value.
2066    iter = start;
2067 
2068    while (iter != end && *iter != q) {
2069      ++iter;
2070    }
2071 
2072    if (iter == end) {
2073      // Oops, unterminated quoted string.
2074      return false;
2075    }
2076 
2077    // At this point attrName holds the name of the "attribute" and
2078    // the value is between start and iter.
2079 
2080    if (aName->Equals(attrName)) {
2081      // We'll accumulate as many characters as possible (until we hit either
2082      // the end of the string or the beginning of an entity). Chunks will be
2083      // delimited by start and chunkEnd.
2084      const char16_t* chunkEnd = start;
2085      while (chunkEnd != iter) {
2086        if (*chunkEnd == kLessThan) {
2087          aValue.Truncate();
2088 
2089          return false;
2090        }
2091 
2092        if (*chunkEnd == kAmpersand) {
2093          aValue.Append(start, chunkEnd - start);
2094 
2095          const char16_t* afterEntity = nullptr;
2096          char16_t result[2];
2097          uint32_t count = MOZ_XMLTranslateEntity(
2098              reinterpret_cast<const char*>(chunkEnd),
2099              reinterpret_cast<const char*>(iter),
2100              reinterpret_cast<const char**>(&afterEntity), result);
2101          if (count == 0) {
2102            aValue.Truncate();
2103 
2104            return false;
2105          }
2106 
2107          aValue.Append(result, count);
2108 
2109          // Advance to after the entity and begin a new chunk.
2110          start = chunkEnd = afterEntity;
2111        } else {
2112          ++chunkEnd;
2113        }
2114      }
2115 
2116      // Append remainder.
2117      aValue.Append(start, iter - start);
2118 
2119      return true;
2120    }
2121 
2122    // Resume scanning after the end of the attribute value (past the quote
2123    // char).
2124    start = iter + 1;
2125  }
2126 
2127  return false;
2128}
2129 
2130bool nsContentUtils::IsJavaScriptLanguage(const nsString& aName) {
2131  // Create MIME type as "text/" + given input
2132  nsAutoString mimeType(u"text/");
2133  mimeType.Append(aName);
2134 
2135  return IsJavascriptMIMEType(mimeType);
2136}
2137 
2138void nsContentUtils::SplitMimeType(const nsAString& aValue, nsString& aType,
2139                                   nsString& aParams) {
2140  aType.Truncate();
2141  aParams.Truncate();
2142  int32_t semiIndex = aValue.FindChar(char16_t(';'));
2143  if (-1 != semiIndex) {
2144    aType = Substring(aValue, 0, semiIndex);
2145    aParams =
2146        Substring(aValue, semiIndex + 1, aValue.Length() - (semiIndex + 1));
2147    aParams.StripWhitespace();
2148  } else {
2149    aType = aValue;
2150  }
2151  aType.StripWhitespace();
2152}
2153 
2154/**
2155 * A helper function that parses a sandbox attribute (of an <iframe> or a CSP
2156 * directive) and converts it to the set of flags used internally.
2157 *
2158 * @param aSandboxAttr  the sandbox attribute
2159 * @return              the set of flags (SANDBOXED_NONE if aSandboxAttr is
2160 *                      null)
2161 */
2162uint32_t nsContentUtils::ParseSandboxAttributeToFlags(
2163    const nsAttrValue* aSandboxAttr) {
2164  if (!aSandboxAttr) {
2165    return SANDBOXED_NONE;
2166  }
2167 
2168  uint32_t out = SANDBOX_ALL_FLAGS;
2169 
2170#define SANDBOX_KEYWORD(string, atom, flags)                  \
2171  if (aSandboxAttr->Contains(nsGkAtoms::atom, eIgnoreCase)) { \
2172    out &= ~(flags);                                          \
2173  }
2174#include "IframeSandboxKeywordList.inc"
2175#undef SANDBOX_KEYWORD
2176 
2177  return out;
2178}
2179 
2180/**
2181 * A helper function that checks if a string matches a valid sandbox flag.
2182 *
2183 * @param aFlag   the potential sandbox flag.
2184 * @return        true if the flag is a sandbox flag.
2185 */
2186bool nsContentUtils::IsValidSandboxFlag(const nsAString& aFlag) {
2187#define SANDBOX_KEYWORD(string, atom, flags)                                  \
2188  if (EqualsIgnoreASCIICase(nsDependentAtomString(nsGkAtoms::atom), aFlag)) { \
2189    return true;                                                              \
2190  }
2191#include "IframeSandboxKeywordList.inc"
2192#undef SANDBOX_KEYWORD
2193  return false;
2194}
2195 
2196/**
2197 * A helper function that returns a string attribute corresponding to the
2198 * sandbox flags.
2199 *
2200 * @param aFlags    the sandbox flags
2201 * @param aString   the attribute corresponding to the flags (null if aFlags
2202 *                  is zero)
2203 */
2204void nsContentUtils::SandboxFlagsToString(uint32_t aFlags, nsAString& aString) {
2205  if (!aFlags) {
2206    SetDOMStringToNull(aString);
2207    return;
2208  }
2209 
2210  aString.Truncate();
2211 
2212#define SANDBOX_KEYWORD(string, atom, flags)                \
2213  if (!(aFlags & (flags))) {                                \
2214    if (!aString.IsEmpty()) {                               \
2215      aString.AppendLiteral(u" ");                          \
2216    }                                                       \
2217    aString.Append(nsDependentAtomString(nsGkAtoms::atom)); \
2218  }
2219#include "IframeSandboxKeywordList.inc"
2220#undef SANDBOX_KEYWORD
2221}
2222 
2223nsIBidiKeyboard* nsContentUtils::GetBidiKeyboard() {
2224  if (!sBidiKeyboard) {
2225    sBidiKeyboard = nsIWidget::CreateBidiKeyboard();
2226  }
2227  return sBidiKeyboard;
2228}
2229 
2230// static
2231bool nsContentUtils::IsAlphanumeric(uint32_t aChar) {
2232  nsUGenCategory cat = mozilla::unicode::GetGenCategory(aChar);
2233 
2234  return (cat == nsUGenCategory::kLetter || cat == nsUGenCategory::kNumber);
2235}
2236 
2237// static
2238bool nsContentUtils::IsAlphanumericOrSymbol(uint32_t aChar) {
2239  nsUGenCategory cat = mozilla::unicode::GetGenCategory(aChar);
2240 
2241  return cat == nsUGenCategory::kLetter || cat == nsUGenCategory::kNumber ||
2242         cat == nsUGenCategory::kSymbol;
2243}
2244 
2245// static
2246bool nsContentUtils::IsHyphen(uint32_t aChar) {
2247  // Characters treated as hyphens for the purpose of "emergency" breaking
2248  // when the content would otherwise overflow.
2249  return aChar == uint32_t('-') ||  // HYPHEN-MINUS
2250         aChar == 0x2010 ||         // HYPHEN
2251         aChar == 0x2012 ||         // FIGURE DASH
2252         aChar == 0x2013 ||         // EN DASH
2253         aChar == 0x058A;           // ARMENIAN HYPHEN
2254}
2255 
2256/* static */
2257bool nsContentUtils::IsHTMLWhitespace(char16_t aChar) {
2258  return aChar == char16_t(0x0009) || aChar == char16_t(0x000A) ||
2259         aChar == char16_t(0x000C) || aChar == char16_t(0x000D) ||
2260         aChar == char16_t(0x0020);
2261}
2262 
2263/* static */
2264bool nsContentUtils::IsHTMLWhitespaceOrNBSP(char16_t aChar) {
2265  return IsHTMLWhitespace(aChar) || aChar == char16_t(0xA0);
2266}
2267 
2268/* static */
2269bool nsContentUtils::IsHTMLBlockLevelElement(nsIContent* aContent) {
2270  return aContent->IsAnyOfHTMLElements(
2271      nsGkAtoms::address, nsGkAtoms::article, nsGkAtoms::aside,
2272      nsGkAtoms::blockquote, nsGkAtoms::center, nsGkAtoms::dir, nsGkAtoms::div,
2273      nsGkAtoms::dl,  // XXX why not dt and dd?
2274      nsGkAtoms::fieldset,
2275      nsGkAtoms::figure,  // XXX shouldn't figcaption be on this list
2276      nsGkAtoms::footer, nsGkAtoms::form, nsGkAtoms::h1, nsGkAtoms::h2,
2277      nsGkAtoms::h3, nsGkAtoms::h4, nsGkAtoms::h5, nsGkAtoms::h6,
2278      nsGkAtoms::header, nsGkAtoms::hgroup, nsGkAtoms::hr, nsGkAtoms::li,
2279      nsGkAtoms::listing, nsGkAtoms::menu, nsGkAtoms::nav, nsGkAtoms::ol,
2280      nsGkAtoms::p, nsGkAtoms::pre, nsGkAtoms::section, nsGkAtoms::table,
2281      nsGkAtoms::ul, nsGkAtoms::xmp);
2282}
2283 
2284// static
2285int32_t nsContentUtils::ParseLegacyFontSize(const nsAString& aValue) {
2286  nsAString::const_iterator iter, end;
2287  aValue.BeginReading(iter);
2288  aValue.EndReading(end);
2289 
2290  while (iter != end && nsContentUtils::IsHTMLWhitespace(*iter)) {
2291    ++iter;
2292  }
2293 
2294  if (iter == end) {
2295    return 0;
2296  }
2297 
2298  bool relative = false;
2299  bool negate = false;
2300  if (*iter == char16_t('-')) {
2301    relative = true;
2302    negate = true;
2303    ++iter;
2304  } else if (*iter == char16_t('+')) {
2305    relative = true;
2306    ++iter;
2307  }
2308 
2309  if (iter == end || *iter < char16_t('0') || *iter > char16_t('9')) {
2310    return 0;
2311  }
2312 
2313  // We don't have to worry about overflow, since we can bail out as soon as
2314  // we're bigger than 7.
2315  int32_t value = 0;
2316  while (iter != end && *iter >= char16_t('0') && *iter <= char16_t('9')) {
2317    value = 10 * value + (*iter - char16_t('0'));
2318    if (value >= 7) {
2319      break;
2320    }
2321    ++iter;
2322  }
2323 
2324  if (relative) {
2325    if (negate) {
2326      value = 3 - value;
2327    } else {
2328      value = 3 + value;
2329    }
2330  }
2331 
2332  return std::clamp(value, 1, 7);
2333}
2334 
2335/* static */
2336void nsContentUtils::GetOfflineAppManifest(Document* aDocument, nsIURI** aURI) {
2337  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2337); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 2337); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
2338  MOZ_ASSERT(aDocument)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aDocument)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aDocument))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aDocument", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 2338); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aDocument" ")"
); do { MOZ_CrashSequence(__null, 2338); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
2339  *aURI = nullptr;
2340 
2341  if (aDocument->GetController().isSome()) {
2342    return;
2343  }
2344 
2345  Element* docElement = aDocument->GetRootElement();
2346  if (!docElement) {
2347    return;
2348  }
2349 
2350  nsAutoString manifestSpec;
2351  docElement->GetAttr(nsGkAtoms::manifest, manifestSpec);
2352 
2353  // Manifest URIs can't have fragment identifiers.
2354  if (manifestSpec.IsEmpty() || manifestSpec.Contains('#')) {
2355    return;
2356  }
2357 
2358  nsContentUtils::NewURIWithDocumentCharset(aURI, manifestSpec, aDocument,
2359                                            aDocument->GetDocBaseURI());
2360}
2361 
2362/* static */
2363bool nsContentUtils::OfflineAppAllowed(nsIURI* aURI) { return false; }
2364 
2365/* static */
2366bool nsContentUtils::OfflineAppAllowed(nsIPrincipal* aPrincipal) {
2367  return false;
2368}
2369// Static
2370bool nsContentUtils::IsErrorPage(nsIURI* aURI) {
2371  if (!aURI) {
2372    return false;
2373  }
2374 
2375  if (!aURI->SchemeIs("about")) {
2376    return false;
2377  }
2378 
2379  nsAutoCString name;
2380  nsresult rv = NS_GetAboutModuleName(aURI, name);
2381  NS_ENSURE_SUCCESS(rv, false)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "false", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 2381); return false; } } while (false);
2382 
2383  return name.EqualsLiteral("certerror") || name.EqualsLiteral("neterror") ||
2384         name.EqualsLiteral("blocked");
2385}
2386 
2387// static
2388void nsContentUtils::Shutdown() {
2389  sInitialized = false;
2390 
2391  nsHTMLTags::ReleaseTable();
2392 
2393  NS_IF_RELEASE(sContentPolicyService)do { if (sContentPolicyService) { (sContentPolicyService)->
Release(); (sContentPolicyService) = 0; } } while (0);
2394  sTriedToGetContentPolicy = false;
2395  for (StaticRefPtr<nsIStringBundle>& bundle : sStringBundles) {
2396    bundle = nullptr;
2397  }
2398 
2399  NS_IF_RELEASE(sStringBundleService)do { if (sStringBundleService) { (sStringBundleService)->Release
(); (sStringBundleService) = 0; } } while (0);
2400  NS_IF_RELEASE(sConsoleService)do { if (sConsoleService) { (sConsoleService)->Release(); (
sConsoleService) = 0; } } while (0);
2401  NS_IF_RELEASE(sXPConnect)do { if (sXPConnect) { (sXPConnect)->Release(); (sXPConnect
) = 0; } } while (0);
2402  NS_IF_RELEASE(sSecurityManager)do { if (sSecurityManager) { (sSecurityManager)->Release()
; (sSecurityManager) = 0; } } while (0);
2403  NS_IF_RELEASE(sSystemPrincipal)do { if (sSystemPrincipal) { (sSystemPrincipal)->Release()
; (sSystemPrincipal) = 0; } } while (0);
2404  NS_IF_RELEASE(sNullSubjectPrincipal)do { if (sNullSubjectPrincipal) { (sNullSubjectPrincipal)->
Release(); (sNullSubjectPrincipal) = 0; } } while (0);
2405  NS_IF_RELEASE(sFingerprintingProtectionPrincipal)do { if (sFingerprintingProtectionPrincipal) { (sFingerprintingProtectionPrincipal
)->Release(); (sFingerprintingProtectionPrincipal) = 0; } }
 while (0);
2406 
2407  sBidiKeyboard = nullptr;
2408 
2409  delete sAtomEventTable;
2410  sAtomEventTable = nullptr;
2411  delete sStringEventTable;
2412  sStringEventTable = nullptr;
2413  delete sUserDefinedEvents;
2414  sUserDefinedEvents = nullptr;
2415 
2416  // Managers left in the list remove themselves from it when they're deleted,
2417  // which can happen after this point.
2418  NS_ASSERTION(sNodeEventListenerManagers.isEmpty(),do { if (!(sNodeEventListenerManagers.isEmpty())) { NS_DebugBreak
(NS_DEBUG_ASSERTION, "Node event listener manager list not empty at shutdown!"
, "sNodeEventListenerManagers.isEmpty()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 2419); MOZ_PretendNoReturn(); } } while (0)
2419               "Node event listener manager list not empty at shutdown!")do { if (!(sNodeEventListenerManagers.isEmpty())) { NS_DebugBreak
(NS_DEBUG_ASSERTION, "Node event listener manager list not empty at shutdown!"
, "sNodeEventListenerManagers.isEmpty()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 2419); MOZ_PretendNoReturn(); } } while (0);
2420 
2421  MOZ_ASSERT_IF(sDOMArenaHashtable, sDOMArenaHashtable->Count() == 0)do { if (sDOMArenaHashtable) { do { static_assert( mozilla::detail
::AssertionConditionType<decltype(sDOMArenaHashtable->Count
() == 0)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(sDOMArenaHashtable->Count() == 0))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("sDOMArenaHashtable->Count() == 0"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2421); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "sDOMArenaHashtable->Count() == 0" ")");
 do { MOZ_CrashSequence(__null, 2421); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
2422  delete sDOMArenaHashtable;
2423  sDOMArenaHashtable = nullptr;
2424 
2425  NS_ASSERTION(!sBlockedScriptRunners || sBlockedScriptRunners->Length() == 0,do { if (!(!sBlockedScriptRunners || sBlockedScriptRunners->
Length() == 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "How'd this happen?"
, "!sBlockedScriptRunners || sBlockedScriptRunners->Length() == 0"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2426); MOZ_PretendNoReturn
(); } } while (0)
2426               "How'd this happen?")do { if (!(!sBlockedScriptRunners || sBlockedScriptRunners->
Length() == 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "How'd this happen?"
, "!sBlockedScriptRunners || sBlockedScriptRunners->Length() == 0"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2426); MOZ_PretendNoReturn
(); } } while (0);
2427  delete sBlockedScriptRunners;
2428  sBlockedScriptRunners = nullptr;
2429 
2430  delete sShiftText;
2431  sShiftText = nullptr;
2432  delete sControlText;
2433  sControlText = nullptr;
2434  delete sCommandOrWinText;
2435  sCommandOrWinText = nullptr;
2436  delete sAltText;
2437  sAltText = nullptr;
2438  delete sModifierSeparator;
2439  sModifierSeparator = nullptr;
2440 
2441  delete sJSScriptBytecodeMimeType;
2442  sJSScriptBytecodeMimeType = nullptr;
2443 
2444  delete sJSModuleBytecodeMimeType;
2445  sJSModuleBytecodeMimeType = nullptr;
2446 
2447  NS_IF_RELEASE(sSameOriginChecker)do { if (sSameOriginChecker) { (sSameOriginChecker)->Release
(); (sSameOriginChecker) = 0; } } while (0);
2448 
2449  if (sUserInteractionObserver) {
2450    sUserInteractionObserver->Shutdown();
2451    NS_RELEASE(sUserInteractionObserver)do { (sUserInteractionObserver)->Release(); (sUserInteractionObserver
) = 0; } while (0);
2452  }
2453 
2454  for (const auto& pref : kRfpPrefs) {
2455    Preferences::UnregisterCallback(RecomputeResistFingerprintingAllDocs, pref);
2456  }
2457 
2458  TextControlState::Shutdown();
2459}
2460 
2461/**
2462 * Checks whether two nodes come from the same origin. aTrustedNode is
2463 * considered 'safe' in that a user can operate on it.
2464 */
2465// static
2466nsresult nsContentUtils::CheckSameOrigin(const nsINode* aTrustedNode,
2467                                         const nsINode* unTrustedNode) {
2468  MOZ_ASSERT(aTrustedNode)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aTrustedNode)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aTrustedNode))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("aTrustedNode", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 2468); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aTrustedNode"
 ")"); do { MOZ_CrashSequence(__null, 2468); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
2469  MOZ_ASSERT(unTrustedNode)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(unTrustedNode)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(unTrustedNode))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("unTrustedNode",
 "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2469); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "unTrustedNode" ")"); do { MOZ_CrashSequence
(__null, 2469); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
2470 
2471  /*
2472   * Get hold of each node's principal
2473   */
2474 
2475  nsIPrincipal* trustedPrincipal = aTrustedNode->NodePrincipal();
2476  nsIPrincipal* unTrustedPrincipal = unTrustedNode->NodePrincipal();
2477 
2478  if (trustedPrincipal == unTrustedPrincipal) {
2479    return NS_OK;
2480  }
2481 
2482  bool equal;
2483  // XXXbz should we actually have a Subsumes() check here instead?  Or perhaps
2484  // a separate method for that, with callers using one or the other?
2485  if (NS_FAILED(trustedPrincipal->Equals(unTrustedPrincipal, &equal))((bool)(__builtin_expect(!!(NS_FAILED_impl(trustedPrincipal->
Equals(unTrustedPrincipal, &equal))), 0))) ||
2486      !equal) {
2487    return NS_ERROR_DOM_PROP_ACCESS_DENIED;
2488  }
2489 
2490  return NS_OK;
2491}
2492 
2493// static
2494bool nsContentUtils::CanCallerAccess(nsIPrincipal* aSubjectPrincipal,
2495                                     nsIPrincipal* aPrincipal) {
2496  bool subsumes;
2497  nsresult rv = aSubjectPrincipal->Subsumes(aPrincipal, &subsumes);
2498  NS_ENSURE_SUCCESS(rv, false)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "false", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 2498); return false; } } while (false);
2499 
2500  if (subsumes) {
2501    return true;
2502  }
2503 
2504  // The subject doesn't subsume aPrincipal. Allow access only if the subject
2505  // is chrome.
2506  return IsCallerChrome();
2507}
2508 
2509// static
2510bool nsContentUtils::CanCallerAccess(const nsINode* aNode) {
2511  nsIPrincipal* subject = SubjectPrincipal();
2512  if (subject->IsSystemPrincipal()) {
2513    return true;
2514  }
2515 
2516  if (aNode->ChromeOnlyAccess()) {
2517    return false;
2518  }
2519 
2520  return CanCallerAccess(subject, aNode->NodePrincipal());
2521}
2522 
2523// static
2524bool nsContentUtils::CanCallerAccess(nsPIDOMWindowInner* aWindow) {
2525  nsCOMPtr<nsIScriptObjectPrincipal> scriptObject = do_QueryInterface(aWindow);
2526  NS_ENSURE_TRUE(scriptObject, false)do { if ((__builtin_expect(!!(!(scriptObject)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "scriptObject" ") failed"
, nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 2526); return false; } } while (false);
2527 
2528  return CanCallerAccess(SubjectPrincipal(), scriptObject->GetPrincipal());
2529}
2530 
2531// static
2532bool nsContentUtils::PrincipalHasPermission(nsIPrincipal& aPrincipal,
2533                                            const nsAtom* aPerm) {
2534  // Chrome gets access by default.
2535  if (aPrincipal.IsSystemPrincipal()) {
2536    return true;
2537  }
2538 
2539  // Otherwise, only allow if caller is an addon with the permission.
2540  return BasePrincipal::Cast(aPrincipal).AddonHasPermission(aPerm);
2541}
2542 
2543// static
2544bool nsContentUtils::CallerHasPermission(JSContext* aCx, const nsAtom* aPerm) {
2545  return PrincipalHasPermission(*SubjectPrincipal(aCx), aPerm);
2546}
2547 
2548// static
2549nsIPrincipal* nsContentUtils::GetAttrTriggeringPrincipal(
2550    nsIContent* aContent, const nsAString& aAttrValue,
2551    nsIPrincipal* aSubjectPrincipal) {
2552  nsIPrincipal* contentPrin = aContent ? aContent->NodePrincipal() : nullptr;
2553 
2554  // If the subject principal is the same as the content principal, or no
2555  // explicit subject principal was provided, we don't need to do any further
2556  // checks. Just return the content principal.
2557  if (contentPrin == aSubjectPrincipal || !aSubjectPrincipal) {
2558    return contentPrin;
2559  }
2560 
2561  // Only use the subject principal if the URL string we are going to end up
2562  // fetching is under the control of that principal, which is never the case
2563  // for relative URLs.
2564  if (aAttrValue.IsEmpty() ||
2565      !IsAbsoluteURL(NS_ConvertUTF16toUTF8(aAttrValue))) {
2566    return contentPrin;
2567  }
2568 
2569  // Only use the subject principal as the attr triggering principal if it
2570  // should override the CSP of the node's principal.
2571  if (BasePrincipal::Cast(aSubjectPrincipal)->OverridesCSP(contentPrin)) {
2572    return aSubjectPrincipal;
2573  }
2574 
2575  return contentPrin;
2576}
2577 
2578// static
2579bool nsContentUtils::CanNavigate(mozilla::dom::BrowsingContext* aSource,
2580                                 mozilla::dom::BrowsingContext* aTarget,
2581                                 nsIPrincipal* aDocumentPrincipal,
2582                                 bool aConsiderOpener) {
2583  MOZ_DIAGNOSTIC_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aSource->Group() == aTarget->Group())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(aSource->Group() == aTarget->Group()))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("aSource->Group() == aTarget->Group()"
 " (" "Source and target BrowsingContexts must be in the same group"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2585
); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "aSource->Group() == aTarget->Group()"
 ") (" "Source and target BrowsingContexts must be in the same group"
 ")"); do { MOZ_CrashSequence(__null, 2585); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
2584      aSource->Group() == aTarget->Group(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aSource->Group() == aTarget->Group())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(aSource->Group() == aTarget->Group()))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("aSource->Group() == aTarget->Group()"
 " (" "Source and target BrowsingContexts must be in the same group"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2585
); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "aSource->Group() == aTarget->Group()"
 ") (" "Source and target BrowsingContexts must be in the same group"
 ")"); do { MOZ_CrashSequence(__null, 2585); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
2585      "Source and target BrowsingContexts must be in the same group")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aSource->Group() == aTarget->Group())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(aSource->Group() == aTarget->Group()))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("aSource->Group() == aTarget->Group()"
 " (" "Source and target BrowsingContexts must be in the same group"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2585
); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "aSource->Group() == aTarget->Group()"
 ") (" "Source and target BrowsingContexts must be in the same group"
 ")"); do { MOZ_CrashSequence(__null, 2585); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
2586  if (aSource->Group() != aTarget->Group()) {
2587    return false;
2588  }
2589 
2590  auto isFileScheme = [](nsIPrincipal* aPrincipal) -> bool {
2591    // NOTE: This code previously checked for a file scheme using
2592    // `nsIPrincipal::GetURI()` combined with `NS_GetInnermostURI`. We no longer
2593    // use GetURI, as it has been deprecated, and it makes more sense to take
2594    // advantage of the pre-computed origin, which will already use the
2595    // innermost URI (bug 1810619)
2596    nsAutoCString origin, scheme;
2597    return NS_SUCCEEDED(aPrincipal->GetOriginNoSuffix(origin))((bool)(__builtin_expect(!!(!NS_FAILED_impl(aPrincipal->GetOriginNoSuffix
(origin))), 1))) &&
2598           NS_SUCCEEDED(net_ExtractURLScheme(origin, scheme))((bool)(__builtin_expect(!!(!NS_FAILED_impl(net_ExtractURLScheme
(origin, scheme))), 1))) &&
2599           scheme == "file"_ns;
2600  };
2601 
2602  // A frame can navigate itself and its own root.
2603  if (aTarget == aSource || aTarget == aSource->Top()) {
2604    return true;
2605  }
2606 
2607  // If the target frame doesn't yet have a WindowContext, start checking
2608  // principals from its direct ancestor instead. It would inherit its principal
2609  // from this document upon creation.
2610  dom::WindowContext* initialWc = aTarget->GetCurrentWindowContext();
2611  if (!initialWc) {
2612    initialWc = aTarget->GetParentWindowContext();
2613  }
2614 
2615  // A frame can navigate any frame with a same-origin ancestor.
2616  bool isFileDocument = isFileScheme(aDocumentPrincipal);
2617  for (dom::WindowContext* wc = initialWc; wc;
2618       wc = wc->GetParentWindowContext()) {
2619    nsIPrincipal* documentPrincipal = nullptr;
2620    if (XRE_IsParentProcess()) {
2621      dom::WindowGlobalParent* wgp = wc->Canonical();
2622      if (!wgp) {
2623        continue;
2624      }
2625      documentPrincipal = wgp->DocumentPrincipal();
2626    } else {
2627      dom::WindowGlobalChild* wgc = wc->GetWindowGlobalChild();
2628      if (!wgc) {
2629        continue;  // not same-origin.
2630      }
2631      documentPrincipal = wgc->DocumentPrincipal();
2632    }
2633 
2634    if (aDocumentPrincipal->Equals(documentPrincipal)) {
2635      return true;
2636    }
2637 
2638    // Not strictly equal, special case if both are file: URIs.
2639    //
2640    // file: URIs are considered the same domain for the purpose of frame
2641    // navigation, regardless of script accessibility (bug 420425).
2642    if (isFileDocument && isFileScheme(documentPrincipal)) {
2643      return true;
2644    }
2645  }
2646 
2647  // If the target is a top-level document, a frame can navigate it
2648  // when the source is allowed to navigate the opener
2649  if (aConsiderOpener && !aTarget->GetParent()) {
2650    if (RefPtr<dom::BrowsingContext> opener = aTarget->GetOpener()) {
2651      return CanNavigate(aSource, opener, aDocumentPrincipal, false);
2652    }
2653  }
2654 
2655  return false;
2656}
2657 
2658// static
2659bool nsContentUtils::IsAbsoluteURL(const nsACString& aURL) {
2660  nsAutoCString scheme;
2661  if (NS_FAILED(net_ExtractURLScheme(aURL, scheme))((bool)(__builtin_expect(!!(NS_FAILED_impl(net_ExtractURLScheme
(aURL, scheme))), 0)))) {
2662    // If we can't extract a scheme, it's not an absolute URL.
2663    return false;
2664  }
2665 
2666  // If it parses as an absolute StandardURL, it's definitely an absolute URL,
2667  // so no need to check with the IO service.
2668  if (net_IsAbsoluteURL(aURL)) {
2669    return true;
2670  }
2671 
2672  nsresult rv = NS_OK;
2673  nsCOMPtr<nsIIOService> io = mozilla::components::IO::Service(&rv);
2674  MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
)))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 2674); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))"
 ")"); do { MOZ_CrashSequence(__null, 2674); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
2675  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
2676    return false;
2677  }
2678 
2679  uint32_t flags;
2680  if (NS_SUCCEEDED(io->GetProtocolFlags(scheme.get(), &flags))((bool)(__builtin_expect(!!(!NS_FAILED_impl(io->GetProtocolFlags
(scheme.get(), &flags))), 1)))) {
2681    return flags & nsIProtocolHandler::URI_NORELATIVE;
2682  }
2683 
2684  return false;
2685}
2686 
2687// static
2688bool nsContentUtils::InProlog(nsINode* aNode) {
2689  MOZ_ASSERT(aNode, "missing node to nsContentUtils::InProlog")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(aNode))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("aNode" " (" "missing node to nsContentUtils::InProlog"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2689
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode" ") (" "missing node to nsContentUtils::InProlog"
 ")"); do { MOZ_CrashSequence(__null, 2689); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
2690 
2691  nsINode* parent = aNode->GetParentNode();
2692  if (!parent || !parent->IsDocument()) {
2693    return false;
2694  }
2695 
2696  const Document* doc = parent->AsDocument();
2697  const nsIContent* root = doc->GetRootElement();
2698  if (!root) {
2699    return true;
2700  }
2701  const Maybe<uint32_t> indexOfNode = doc->ComputeIndexOf(aNode);
2702  const Maybe<uint32_t> indexOfRoot = doc->ComputeIndexOf(root);
2703  if (MOZ_LIKELY(indexOfNode.isSome() && indexOfRoot.isSome())(__builtin_expect(!!(indexOfNode.isSome() && indexOfRoot
.isSome()), 1))) {
2704    return *indexOfNode < *indexOfRoot;
2705  }
2706  // XXX Keep the odd traditional behavior for now.
2707  return indexOfNode.isNothing() && indexOfRoot.isSome();
2708}
2709 
2710bool nsContentUtils::IsCallerChrome() {
2711  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2711); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 2711); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
2712  return SubjectPrincipal() == sSystemPrincipal;
2713}
2714 
2715#ifdef FUZZING
2716bool nsContentUtils::IsFuzzingEnabled() {
2717  return StaticPrefs::fuzzing_enabled();
2718}
2719#endif
2720 
2721/* static */
2722bool nsContentUtils::IsCallerChromeOrElementTransformGettersEnabled(
2723    JSContext* aCx, JSObject*) {
2724  return ThreadsafeIsSystemCaller(aCx) ||
2725         StaticPrefs::dom_element_transform_getters_enabled();
2726}
2727 
2728// Older Should RFP Functions ----------------------------------
2729 
2730/* static */
2731bool nsContentUtils::ShouldResistFingerprinting(bool aIsPrivateMode,
2732                                                RFPTarget aTarget) {
2733  return nsRFPService::IsRFPEnabledFor(aIsPrivateMode, aTarget, Nothing());
2734}
2735 
2736/* static */
2737bool nsContentUtils::ShouldResistFingerprinting(nsIGlobalObject* aGlobalObject,
2738                                                RFPTarget aTarget) {
2739  if (!aGlobalObject) {
2740    return ShouldResistFingerprinting("Null Object", aTarget);
2741  }
2742  return aGlobalObject->ShouldResistFingerprinting(aTarget);
2743}
2744 
2745// Newer Should RFP Functions ----------------------------------
2746// Utilities ---------------------------------------------------
2747 
2748inline void LogDomainAndList(const char* urlType, nsAutoCString& list,
2749                             nsAutoCString& url, bool isExemptDomain) {
2750  MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "%s \"%s\" is %s the exempt list \"%s\"", urlType, TPromiseFlatString
<char>(url).get(), isExemptDomain ? "in" : "NOT in", TPromiseFlatString
<char>(list).get()); } } while (0)
2751          ("%s \"%s\" is %s the exempt list \"%s\"", urlType,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "%s \"%s\" is %s the exempt list \"%s\"", urlType, TPromiseFlatString
<char>(url).get(), isExemptDomain ? "in" : "NOT in", TPromiseFlatString
<char>(list).get()); } } while (0)
2752           PromiseFlatCString(url).get(), isExemptDomain ? "in" : "NOT in",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "%s \"%s\" is %s the exempt list \"%s\"", urlType, TPromiseFlatString
<char>(url).get(), isExemptDomain ? "in" : "NOT in", TPromiseFlatString
<char>(list).get()); } } while (0)
2753           PromiseFlatCString(list).get()))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "%s \"%s\" is %s the exempt list \"%s\"", urlType, TPromiseFlatString
<char>(url).get(), isExemptDomain ? "in" : "NOT in", TPromiseFlatString
<char>(list).get()); } } while (0);
2754}
2755 
2756inline already_AddRefed<nsICookieJarSettings> GetCookieJarSettings(
2757    nsILoadInfo* aLoadInfo) {
2758  nsCOMPtr<nsICookieJarSettings> cookieJarSettings;
2759  nsresult rv =
2760      aLoadInfo->GetCookieJarSettings(getter_AddRefs(cookieJarSettings));
2761  if (rv == NS_ERROR_NOT_IMPLEMENTED) {
2762    // The TRRLoadInfo in particular does not implement this method
2763    // In that instance.  We will return false and let other code decide if
2764    // we shouldRFP for this connection
2765    return nullptr;
2766  }
2767  if (NS_WARN_IF(NS_FAILED(rv))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(rv
)), 0))), "NS_FAILED(rv)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 2767)) {
2768    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called CookieJarSettingsSaysShouldResistFingerprinting but the "
 "loadinfo's CookieJarSettings couldn't be retrieved"); } } while
 (0)
2769            ("Called CookieJarSettingsSaysShouldResistFingerprinting but the "do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called CookieJarSettingsSaysShouldResistFingerprinting but the "
 "loadinfo's CookieJarSettings couldn't be retrieved"); } } while
 (0)
2770             "loadinfo's CookieJarSettings couldn't be retrieved"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called CookieJarSettingsSaysShouldResistFingerprinting but the "
 "loadinfo's CookieJarSettings couldn't be retrieved"); } } while
 (0);
2771    return nullptr;
2772  }
2773 
2774  MOZ_ASSERT(cookieJarSettings)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(cookieJarSettings)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(cookieJarSettings))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("cookieJarSettings"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 2774); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "cookieJarSettings" ")"); do { MOZ_CrashSequence
(__null, 2774); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
2775  return cookieJarSettings.forget();
2776}
2777 
2778bool nsContentUtils::ETPSaysShouldNotResistFingerprinting(
2779    nsICookieJarSettings* aCookieJarSettings, bool aIsPBM) {
2780  // A positive return from this function should always be obeyed.
2781  // A negative return means we should keep checking things.
2782 
2783  // We do not want this check to apply to RFP, only to FPP.
2784  if (nsRFPService::IsRFPPrefEnabled(aIsPBM)) {
2785    // In RFP, never use the ETP toggle to exempt.
2786    // We can safely return false here even if we are not in PBM mode
2787    // and RFP_pbmode is enabled because we will later see that and
2788    // return false from the ShouldRFP function entirely.
2789    return false;
2790  }
2791 
2792  return ContentBlockingAllowList::Check(aCookieJarSettings);
2793}
2794 
2795bool nsContentUtils::ETPSaysShouldNotResistFingerprinting(
2796    nsIChannel* aChannel, nsILoadInfo* aLoadInfo) {
2797  bool isPBM = NS_UsePrivateBrowsing(aChannel);
2798 
2799  nsCOMPtr<nsICookieJarSettings> cookieJarSettings =
2800      GetCookieJarSettings(aLoadInfo);
2801  if (!cookieJarSettings) {
2802    return false;
2803  }
2804 
2805  return ETPSaysShouldNotResistFingerprinting(cookieJarSettings, isPBM);
2806}
2807 
2808inline bool CookieJarSettingsSaysShouldResistFingerprinting(
2809    nsILoadInfo* aLoadInfo) {
2810  // A positive return from this function should always be obeyed.
2811  // A negative return means we should keep checking things.
2812 
2813  nsCOMPtr<nsICookieJarSettings> cookieJarSettings =
2814      GetCookieJarSettings(aLoadInfo);
2815  if (!cookieJarSettings) {
2816    return false;
2817  }
2818  return cookieJarSettings->GetShouldResistFingerprinting();
2819}
2820 
2821inline bool SchemeSaysShouldNotResistFingerprinting(nsIURI* aURI) {
2822  return aURI->SchemeIs("chrome") || aURI->SchemeIs("resource") ||
2823         aURI->SchemeIs("view-source") || aURI->SchemeIs("moz-extension") ||
2824         (aURI->SchemeIs("about") && !NS_IsContentAccessibleAboutURI(aURI));
2825}
2826 
2827inline bool SchemeSaysShouldNotResistFingerprinting(nsIPrincipal* aPrincipal) {
2828  if (aPrincipal->SchemeIs("chrome") || aPrincipal->SchemeIs("resource") ||
2829      aPrincipal->SchemeIs("view-source") ||
2830      aPrincipal->SchemeIs("moz-extension")) {
2831    return true;
2832  }
2833 
2834  if (!aPrincipal->SchemeIs("about")) {
2835    return false;
2836  }
2837 
2838  bool isContentAccessibleAboutURI;
2839  (void)aPrincipal->IsContentAccessibleAboutURI(&isContentAccessibleAboutURI);
2840  return !isContentAccessibleAboutURI;
2841}
2842 
2843// mFirstPartyDomain and mPartitionKey are serialized either as a bare host
2844// ("example.com") or in site format ("(https,example.com[,port][,f])"),
2845// depending on privacy.firstparty.isolate.use_site and
2846// privacy.dynamic_firstparty.use_site respectively. Those two prefs are
2847// independent, and ParsePartitionKey() only consults the latter, so detect the
2848// format here instead of letting it decide for a first-party domain.
2849inline void TopLevelInfoToBaseDomain(const nsAString& aInfo,
2850                                     nsAString& aBaseDomain) {
2851  if (aInfo.IsEmpty() || aInfo.First() != '(') {
2852    aBaseDomain = aInfo;
2853    return;
2854  }
2855 
2856  nsAutoString scheme;
2857  int32_t port;
2858  bool foreignByAncestorContext;
2859  if (!OriginAttributes::ParsePartitionKey(aInfo, scheme, aBaseDomain, port,
2860                                           foreignByAncestorContext)) {
2861    aBaseDomain.Truncate();
2862  }
2863}
2864 
2865inline bool PartionKeyIsAlsoExempted(
2866    const mozilla::OriginAttributes& aOriginAttributes) {
2867  // If we've gotten here we have (probably) passed the CookieJarSettings
2868  // check that would tell us that if we _are_ a subdocument, then we are on
2869  // an exempted top-level domain and we should see if we ourselves are
2870  // exempted. But we may have gotten here because we directly called the
2871  // _dangerous function and we haven't done that check, but we _were_
2872  // instatiated from a state where we could have been partitioned.
2873  // So perform this last-ditch check for that scenario.
2874  // We arbitrarily use https as the scheme, but it doesn't matter.
2875  nsAutoString baseDomain;
2876  if (StaticPrefs::privacy_firstparty_isolate() &&
2877      !aOriginAttributes.mFirstPartyDomain.IsEmpty()) {
2878    TopLevelInfoToBaseDomain(aOriginAttributes.mFirstPartyDomain, baseDomain);
2879  } else if (!aOriginAttributes.mPartitionKey.IsEmpty()) {
2880    TopLevelInfoToBaseDomain(aOriginAttributes.mPartitionKey, baseDomain);
2881  }
2882 
2883  nsresult rv = NS_ERROR_NOT_INITIALIZED;
2884  nsCOMPtr<nsIURI> uri;
2885  if (!baseDomain.IsEmpty()) {
2886    rv = NS_NewURI(getter_AddRefs(uri), u"https://"_ns + baseDomain);
2887  }
2888 
2889  if (!NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
2890    nsAutoCString list;
2891    nsRFPService::GetExemptedDomainsLowercase(list);
2892    bool isExemptPartitionKey = nsContentUtils::IsURIInList(uri, list);
2893    if (MOZ_LOG_TEST(nsContentUtils::ResistFingerprintingLog(),(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))
2894                     mozilla::LogLevel::Debug)(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))) {
2895      nsAutoCString url;
2896      uri->GetHost(url);
2897      LogDomainAndList("Partition Key", list, url, isExemptPartitionKey);
2898    }
2899    return isExemptPartitionKey;
2900  }
2901  return true;
2902}
2903 
2904// Functions ---------------------------------------------------
2905 
2906/* static */
2907bool nsContentUtils::ShouldResistFingerprinting(const char* aJustification,
2908                                                RFPTarget aTarget) {
2909  // See comment in header file for information about usage
2910  // We hardcode PBM to true to be the more restrictive option.
2911  return nsContentUtils::ShouldResistFingerprinting(true, aTarget);
2912}
2913 
2914namespace {
2915 
2916// This function is only called within this file for Positive Return Checks
2917bool ShouldResistFingerprinting_(const char* aJustification,
2918                                 bool aIsPrivateMode, RFPTarget aTarget) {
2919  // See comment in header file for information about usage
2920  return nsContentUtils::ShouldResistFingerprinting(aIsPrivateMode, aTarget);
2921}
2922 
2923}  // namespace
2924 
2925/* static */
2926bool nsContentUtils::ShouldResistFingerprinting(CallerType aCallerType,
2927                                                nsIGlobalObject* aGlobalObject,
2928                                                RFPTarget aTarget) {
2929  if (aCallerType == CallerType::System) {
2930    return false;
2931  }
2932  return ShouldResistFingerprinting(aGlobalObject, aTarget);
2933}
2934 
2935/* static */
2936bool nsContentUtils::ShouldResistFingerprinting(nsIDocShell* aDocShell,
2937                                                RFPTarget aTarget) {
2938  if (!aDocShell) {
2939    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIDocShell*) "
 "with NULL docshell"); } } while (0)
2940            ("Called nsContentUtils::ShouldResistFingerprinting(nsIDocShell*) "do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIDocShell*) "
 "with NULL docshell"); } } while (0)
2941             "with NULL docshell"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIDocShell*) "
 "with NULL docshell"); } } while (0);
2942    return ShouldResistFingerprinting("Null Object", aTarget);
2943  }
2944  return ShouldResistFingerprinting(aDocShell->GetDocument(), aTarget);
2945}
2946 
2947/* static */
2948bool nsContentUtils::ShouldResistFingerprinting(const Document* aDocument,
2949                                                RFPTarget aTarget) {
2950  if (!aDocument) {
2951    MOZ_LOG(do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(const Document*) "
 "with NULL document"); } } while (0)
2952        nsContentUtils::ResistFingerprintingLog(), LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(const Document*) "
 "with NULL document"); } } while (0)
2953        ("Called nsContentUtils::ShouldResistFingerprinting(const Document*) "do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(const Document*) "
 "with NULL document"); } } while (0)
2954         "with NULL document"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(const Document*) "
 "with NULL document"); } } while (0);
2955    return ShouldResistFingerprinting("Null Object", aTarget);
2956  }
2957  return aDocument->ShouldResistFingerprinting(aTarget);
2958}
2959 
2960/* static */
2961bool nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel,
2962                                                RFPTarget aTarget) {
2963  if (!aChannel) {
2964    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* "
 "aChannel) with NULL channel"); } } while (0)
2965            ("Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* "do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* "
 "aChannel) with NULL channel"); } } while (0)
2966             "aChannel) with NULL channel"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* "
 "aChannel) with NULL channel"); } } while (0);
2967    return ShouldResistFingerprinting("Null Object", aTarget);
2968  }
2969 
2970  bool isPBM = NS_UsePrivateBrowsing(aChannel);
2971 
2972  if (MOZ_LOG_TEST(nsContentUtils::ResistFingerprintingLog(),(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))
2973                   mozilla::LogLevel::Debug)(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))) {
2974    nsCOMPtr<nsIURI> channelURI;
2975    (void)NS_GetFinalChannelURI(aChannel, getter_AddRefs(channelURI));
2976    nsAutoCString channelSpec;
2977    channelURI->GetSpec(channelSpec);
2978    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*) for %s (PBM: %s)"
, channelSpec.get(), isPBM ? "Yes" : "No"); } } while (0)
2979            ("Inside ShouldResistFingerprinting(nsIChannel*) for %s (PBM: %s)",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*) for %s (PBM: %s)"
, channelSpec.get(), isPBM ? "Yes" : "No"); } } while (0)
2980             channelSpec.get(), isPBM ? "Yes" : "No"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*) for %s (PBM: %s)"
, channelSpec.get(), isPBM ? "Yes" : "No"); } } while (0);
2981  }
2982 
2983  nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
2984  if (!loadInfo) {
2985    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* "
 "aChannel) but the channel's loadinfo was NULL"); } } while (
0)
2986            ("Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* "do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* "
 "aChannel) but the channel's loadinfo was NULL"); } } while (
0)
2987             "aChannel) but the channel's loadinfo was NULL"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsIChannel* "
 "aChannel) but the channel's loadinfo was NULL"); } } while (
0);
2988    return ShouldResistFingerprinting("Null Object", aTarget);
2989  }
2990 
2991  // With this check, we can ensure that the prefs and target say yes, so only
2992  // an exemption would cause us to return false.
2993  if (!ShouldResistFingerprinting_("Positive return check", isPBM, aTarget)) {
2994    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " Positive return check said false (PBM: %s)"
, isPBM ? "Yes" : "No"); } } while (0)
2995            ("Inside ShouldResistFingerprinting(nsIChannel*)"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " Positive return check said false (PBM: %s)"
, isPBM ? "Yes" : "No"); } } while (0)
2996             " Positive return check said false (PBM: %s)",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " Positive return check said false (PBM: %s)"
, isPBM ? "Yes" : "No"); } } while (0)
2997             isPBM ? "Yes" : "No"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " Positive return check said false (PBM: %s)"
, isPBM ? "Yes" : "No"); } } while (0);
2998    return false;
2999  }
3000 
3001  auto contentType = loadInfo->GetExternalContentPolicyType();
3002 
3003  if (sSecurityManager && (contentType == ExtContentPolicy::TYPE_DOCUMENT ||
3004                           contentType == ExtContentPolicy::TYPE_SUBDOCUMENT)) {
3005    nsCOMPtr<nsIPrincipal> resultPrincipal;
3006    nsresult rv = sSecurityManager->GetChannelResultPrincipal(
3007        aChannel, getter_AddRefs(resultPrincipal));
3008    if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))) && IsPDFJS(resultPrincipal)) {
3009      MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " PDF.js document exempted"
); } } while (0)
3010              ("Inside ShouldResistFingerprinting(nsIChannel*)"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " PDF.js document exempted"
); } } while (0)
3011               " PDF.js document exempted"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " PDF.js document exempted"
); } } while (0);
3012      return false;
3013    }
3014  }
3015 
3016  if (ETPSaysShouldNotResistFingerprinting(aChannel, loadInfo)) {
3017    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " ETPSaysShouldNotResistFingerprinting said false"
); } } while (0)
3018            ("Inside ShouldResistFingerprinting(nsIChannel*)"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " ETPSaysShouldNotResistFingerprinting said false"
); } } while (0)
3019             " ETPSaysShouldNotResistFingerprinting said false"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " ETPSaysShouldNotResistFingerprinting said false"
); } } while (0);
3020    return false;
3021  }
3022 
3023  if (CookieJarSettingsSaysShouldResistFingerprinting(loadInfo)) {
3024    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " CookieJarSettingsSaysShouldResistFingerprinting said true"
); } } while (0)
3025            ("Inside ShouldResistFingerprinting(nsIChannel*)"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " CookieJarSettingsSaysShouldResistFingerprinting said true"
); } } while (0)
3026             " CookieJarSettingsSaysShouldResistFingerprinting said true"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIChannel*)" " CookieJarSettingsSaysShouldResistFingerprinting said true"
); } } while (0);
3027    return true;
3028  }
3029 
3030  // Document types have no loading principal.  Subdocument types do have a
3031  // loading principal, but it is the loading principal of the parent
3032  // document; not the subdocument.
3033  // Case 1: Document or Subdocument load
3034  if (contentType == ExtContentPolicy::TYPE_DOCUMENT ||
3035      contentType == ExtContentPolicy::TYPE_SUBDOCUMENT) {
3036    nsCOMPtr<nsIURI> channelURI;
3037    nsresult rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(channelURI));
3038    MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
)))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))" " ("
 "Failed to get URI in " "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3041
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))"
 ") (" "Failed to get URI in " "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)"
 ")"); do { MOZ_CrashSequence(__null, 3041); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
3039        NS_SUCCEEDED(rv),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
)))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))" " ("
 "Failed to get URI in " "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3041
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))"
 ") (" "Failed to get URI in " "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)"
 ")"); do { MOZ_CrashSequence(__null, 3041); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
3040        "Failed to get URI in "do { static_assert( mozilla::detail::AssertionConditionType<
decltype(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
)))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))" " ("
 "Failed to get URI in " "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3041
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))"
 ") (" "Failed to get URI in " "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)"
 ")"); do { MOZ_CrashSequence(__null, 3041); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
3041        "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
)))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)
))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))" " ("
 "Failed to get URI in " "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3041
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))"
 ") (" "Failed to get URI in " "nsContentUtils::ShouldResistFingerprinting(nsIChannel* aChannel)"
 ")"); do { MOZ_CrashSequence(__null, 3041); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3042    // this check is to ensure that we do not crash in non-debug builds.
3043    if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
3044      return true;
3045    }
3046 
3047    nsAutoCString loadingPrincipalSpec;
3048    nsAutoCString channelSpec;
3049    channelURI->GetSpec(channelSpec);
3050 
3051    if (contentType == ExtContentPolicy::TYPE_SUBDOCUMENT) {
3052      MOZ_LOG_DEBUG_ONLY(do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Sub Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3053          nsContentUtils::ResistFingerprintingLog(), LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Sub Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3054          ("Sub Document Type.  FinalChannelURI is %s, Loading Principal %s\n",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Sub Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3055           channelSpec.get(),do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Sub Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3056           loadInfo->GetLoadingPrincipal()do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Sub Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3057           ? loadInfo->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec),do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Sub Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3058           loadingPrincipalSpec.get() : "is NULL"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Sub Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0);
3059    } else {
3060      MOZ_LOG_DEBUG_ONLY(do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3061          nsContentUtils::ResistFingerprintingLog(), LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3062          ("Document Type.  FinalChannelURI is %s, Loading Principal %s\n",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3063           channelSpec.get(),do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3064           loadInfo->GetLoadingPrincipal()do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3065           ? loadInfo->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec),do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0)
3066           loadingPrincipalSpec.get() : "is NULL"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Document Type.  FinalChannelURI is %s, Loading Principal %s\n"
, channelSpec.get(), loadInfo->GetLoadingPrincipal() ? loadInfo
->GetLoadingPrincipal()->GetOrigin(loadingPrincipalSpec
), loadingPrincipalSpec.get() : "is NULL"); } } while (0);
3067    }
3068 
3069    return ShouldResistFingerprinting_dangerous(
3070        channelURI, loadInfo->GetOriginAttributes(), "Internal Call", aTarget);
3071  }
3072 
3073  // Case 2: Subresource Load
3074  // Because this code is only used for subresource loads, this
3075  // will check the parent's principal
3076  nsIPrincipal* principal = loadInfo->GetLoadingPrincipal();
3077 
3078  MOZ_ASSERT_IF(principal && !principal->IsSystemPrincipal() &&do { if (principal && !principal->IsSystemPrincipal
() && !principal->GetIsAddonOrExpandedAddonPrincipal
()) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(BasePrincipal::Cast(principal)->OriginAttributesRef
() == loadInfo->GetOriginAttributes())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(BasePrincipal::Cast(principal
)->OriginAttributesRef() == loadInfo->GetOriginAttributes
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("BasePrincipal::Cast(principal)->OriginAttributesRef() == loadInfo->GetOriginAttributes()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3081); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "BasePrincipal::Cast(principal)->OriginAttributesRef() == loadInfo->GetOriginAttributes()"
 ")"); do { MOZ_CrashSequence(__null, 3081); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3079                    !principal->GetIsAddonOrExpandedAddonPrincipal(),do { if (principal && !principal->IsSystemPrincipal
() && !principal->GetIsAddonOrExpandedAddonPrincipal
()) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(BasePrincipal::Cast(principal)->OriginAttributesRef
() == loadInfo->GetOriginAttributes())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(BasePrincipal::Cast(principal
)->OriginAttributesRef() == loadInfo->GetOriginAttributes
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("BasePrincipal::Cast(principal)->OriginAttributesRef() == loadInfo->GetOriginAttributes()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3081); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "BasePrincipal::Cast(principal)->OriginAttributesRef() == loadInfo->GetOriginAttributes()"
 ")"); do { MOZ_CrashSequence(__null, 3081); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3080                BasePrincipal::Cast(principal)->OriginAttributesRef() ==do { if (principal && !principal->IsSystemPrincipal
() && !principal->GetIsAddonOrExpandedAddonPrincipal
()) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(BasePrincipal::Cast(principal)->OriginAttributesRef
() == loadInfo->GetOriginAttributes())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(BasePrincipal::Cast(principal
)->OriginAttributesRef() == loadInfo->GetOriginAttributes
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("BasePrincipal::Cast(principal)->OriginAttributesRef() == loadInfo->GetOriginAttributes()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3081); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "BasePrincipal::Cast(principal)->OriginAttributesRef() == loadInfo->GetOriginAttributes()"
 ")"); do { MOZ_CrashSequence(__null, 3081); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3081                    loadInfo->GetOriginAttributes())do { if (principal && !principal->IsSystemPrincipal
() && !principal->GetIsAddonOrExpandedAddonPrincipal
()) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(BasePrincipal::Cast(principal)->OriginAttributesRef
() == loadInfo->GetOriginAttributes())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(BasePrincipal::Cast(principal
)->OriginAttributesRef() == loadInfo->GetOriginAttributes
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("BasePrincipal::Cast(principal)->OriginAttributesRef() == loadInfo->GetOriginAttributes()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3081); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "BasePrincipal::Cast(principal)->OriginAttributesRef() == loadInfo->GetOriginAttributes()"
 ")"); do { MOZ_CrashSequence(__null, 3081); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3082  return ShouldResistFingerprinting_dangerous(principal, "Internal Call",
3083                                              aTarget);
3084}
3085 
3086/* static */
3087bool nsContentUtils::ShouldResistFingerprinting_dangerous(
3088    nsIURI* aURI, const mozilla::OriginAttributes& aOriginAttributes,
3089    const char* aJustification, RFPTarget aTarget) {
3090  // With this check, we can ensure that the prefs and target say yes, so only
3091  // an exemption would cause us to return false.
3092  bool isPBM = aOriginAttributes.IsPrivateBrowsing();
3093 
3094  MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) and the URI is %s  (PBM: %s)"
, aURI->GetSpecOrDefault().get(), isPBM ? "Yes" : "No"); }
 } while (0)
3095          ("Inside ShouldResistFingerprinting_dangerous(nsIURI*,"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) and the URI is %s  (PBM: %s)"
, aURI->GetSpecOrDefault().get(), isPBM ? "Yes" : "No"); }
 } while (0)
3096           " OriginAttributes) and the URI is %s  (PBM: %s)",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) and the URI is %s  (PBM: %s)"
, aURI->GetSpecOrDefault().get(), isPBM ? "Yes" : "No"); }
 } while (0)
3097           aURI->GetSpecOrDefault().get(), isPBM ? "Yes" : "No"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) and the URI is %s  (PBM: %s)"
, aURI->GetSpecOrDefault().get(), isPBM ? "Yes" : "No"); }
 } while (0);
3098 
3099  if (!ShouldResistFingerprinting_("Positive return check", isPBM, aTarget)) {
3100    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) Positive return check said false (PBM: %s)"
, isPBM ? "Yes" : "No"); } } while (0)
3101            ("Inside ShouldResistFingerprinting_dangerous(nsIURI*,"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) Positive return check said false (PBM: %s)"
, isPBM ? "Yes" : "No"); } } while (0)
3102             " OriginAttributes) Positive return check said false (PBM: %s)",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) Positive return check said false (PBM: %s)"
, isPBM ? "Yes" : "No"); } } while (0)
3103             isPBM ? "Yes" : "No"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) Positive return check said false (PBM: %s)"
, isPBM ? "Yes" : "No"); } } while (0);
3104    return false;
3105  }
3106 
3107  MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) and the URI is %s"
, aURI->GetSpecOrDefault().get()); } } while (0)
3108          ("Inside ShouldResistFingerprinting_dangerous(nsIURI*,"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) and the URI is %s"
, aURI->GetSpecOrDefault().get()); } } while (0)
3109           " OriginAttributes) and the URI is %s",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) and the URI is %s"
, aURI->GetSpecOrDefault().get()); } } while (0)
3110           aURI->GetSpecOrDefault().get()))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting_dangerous(nsIURI*," " OriginAttributes) and the URI is %s"
, aURI->GetSpecOrDefault().get()); } } while (0);
3111 
3112  // Exclude internal schemes and web extensions
3113  if (SchemeSaysShouldNotResistFingerprinting(aURI)) {
3114    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIURI*)" " SchemeSaysShouldNotResistFingerprinting said false"
); } } while (0)
3115            ("Inside ShouldResistFingerprinting(nsIURI*)"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIURI*)" " SchemeSaysShouldNotResistFingerprinting said false"
); } } while (0)
3116             " SchemeSaysShouldNotResistFingerprinting said false"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIURI*)" " SchemeSaysShouldNotResistFingerprinting said false"
); } } while (0);
3117    return false;
3118  }
3119 
3120  bool isExemptDomain = false;
3121  nsAutoCString list;
3122  nsRFPService::GetExemptedDomainsLowercase(list);
3123  isExemptDomain = IsURIInList(aURI, list);
3124 
3125  if (MOZ_LOG_TEST(nsContentUtils::ResistFingerprintingLog(),(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))
3126                   mozilla::LogLevel::Debug)(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))) {
3127    nsAutoCString url;
3128    aURI->GetHost(url);
3129    LogDomainAndList("URI", list, url, isExemptDomain);
3130  }
3131 
3132  if (isExemptDomain) {
3133    isExemptDomain &= PartionKeyIsAlsoExempted(aOriginAttributes);
3134  }
3135 
3136  return !isExemptDomain;
3137}
3138 
3139/* static */
3140bool nsContentUtils::ShouldResistFingerprinting_dangerous(
3141    nsIPrincipal* aPrincipal, const char* aJustification, RFPTarget aTarget) {
3142  if (!aPrincipal) {
3143    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsILoadInfo* "
 "aChannel) but the loadinfo's loadingprincipal was NULL"); }
 } while (0)
3144            ("Called nsContentUtils::ShouldResistFingerprinting(nsILoadInfo* "do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsILoadInfo* "
 "aChannel) but the loadinfo's loadingprincipal was NULL"); }
 } while (0)
3145             "aChannel) but the loadinfo's loadingprincipal was NULL"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Info)), 0))) { mozilla
::detail::log_print(moz_real_module, LogLevel::Info, "Called nsContentUtils::ShouldResistFingerprinting(nsILoadInfo* "
 "aChannel) but the loadinfo's loadingprincipal was NULL"); }
 } while (0);
3146    return ShouldResistFingerprinting("Null object", aTarget);
3147  }
3148 
3149  const auto& originAttributes =
3150      BasePrincipal::Cast(aPrincipal)->OriginAttributesRef();
3151  // With this check, we can ensure that the prefs and target say yes, so only
3152  // an exemption would cause us to return false.
3153  bool isPBM = originAttributes.IsPrivateBrowsing();
3154 
3155  if (MOZ_LOG_TEST(nsContentUtils::ResistFingerprintingLog(),(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))
3156                   mozilla::LogLevel::Debug)(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))) {
3157    nsAutoCString origin;
3158    aPrincipal->GetOrigin(origin);
3159    MOZ_LOG(do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) for %s (PBM: %s)"
, origin.get(), isPBM ? "Yes" : "No"); } } while (0)
3160        nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) for %s (PBM: %s)"
, origin.get(), isPBM ? "Yes" : "No"); } } while (0)
3161        ("Inside ShouldResistFingerprinting(nsIPrincipal*) for %s (PBM: %s)",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) for %s (PBM: %s)"
, origin.get(), isPBM ? "Yes" : "No"); } } while (0)
3162         origin.get(), isPBM ? "Yes" : "No"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) for %s (PBM: %s)"
, origin.get(), isPBM ? "Yes" : "No"); } } while (0);
3163  }
3164 
3165  if (!ShouldResistFingerprinting_("Positive return check", isPBM, aTarget)) {
3166    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) Positive return "
 "check said false (PBM: %s)", isPBM ? "Yes" : "No"); } } while
 (0)
3167            ("Inside ShouldResistFingerprinting(nsIPrincipal*) Positive return "do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) Positive return "
 "check said false (PBM: %s)", isPBM ? "Yes" : "No"); } } while
 (0)
3168             "check said false (PBM: %s)",do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) Positive return "
 "check said false (PBM: %s)", isPBM ? "Yes" : "No"); } } while
 (0)
3169             isPBM ? "Yes" : "No"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) Positive return "
 "check said false (PBM: %s)", isPBM ? "Yes" : "No"); } } while
 (0);
3170    return false;
3171  }
3172 
3173  if (aPrincipal->IsSystemPrincipal()) {
3174    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) System " "Principal said false"
); } } while (0)
3175            ("Inside ShouldResistFingerprinting(nsIPrincipal*) System "do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) System " "Principal said false"
); } } while (0)
3176             "Principal said false"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*) System " "Principal said false"
); } } while (0);
3177    return false;
3178  }
3179 
3180  // Exclude internal schemes and web extensions
3181  if (SchemeSaysShouldNotResistFingerprinting(aPrincipal)) {
3182    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*)" " SchemeSaysShouldNotResistFingerprinting said false"
); } } while (0)
3183            ("Inside ShouldResistFingerprinting(nsIPrincipal*)"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*)" " SchemeSaysShouldNotResistFingerprinting said false"
); } } while (0)
3184             " SchemeSaysShouldNotResistFingerprinting said false"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*)" " SchemeSaysShouldNotResistFingerprinting said false"
); } } while (0);
3185    return false;
3186  }
3187 
3188  // Web extension principals are also excluded
3189  if (BasePrincipal::Cast(aPrincipal)->AddonPolicyCore()) {
3190    MOZ_LOG(nsContentUtils::ResistFingerprintingLog(), LogLevel::Debug,do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*)" " and AddonPolicy said false"
); } } while (0)
3191            ("Inside ShouldResistFingerprinting(nsIPrincipal*)"do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*)" " and AddonPolicy said false"
); } } while (0)
3192             " and AddonPolicy said false"))do { const ::mozilla::LogModule* moz_real_module = nsContentUtils
::ResistFingerprintingLog(); if ((__builtin_expect(!!(mozilla
::detail::log_test(moz_real_module, LogLevel::Debug)), 0))) {
 mozilla::detail::log_print(moz_real_module, LogLevel::Debug,
 "Inside ShouldResistFingerprinting(nsIPrincipal*)" " and AddonPolicy said false"
); } } while (0);
3193    return false;
3194  }
3195 
3196  bool isExemptDomain = false;
3197  nsAutoCString list;
3198  nsRFPService::GetExemptedDomainsLowercase(list);
3199  aPrincipal->IsURIInList(list, &isExemptDomain);
3200 
3201  if (MOZ_LOG_TEST(nsContentUtils::ResistFingerprintingLog(),(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))
3202                   mozilla::LogLevel::Debug)(__builtin_expect(!!(mozilla::detail::log_test(nsContentUtils
::ResistFingerprintingLog(), mozilla::LogLevel::Debug)), 0))) {
3203    nsAutoCString origin;
3204    aPrincipal->GetOrigin(origin);
3205    LogDomainAndList("URI", list, origin, isExemptDomain);
3206  }
3207 
3208  if (isExemptDomain) {
3209    isExemptDomain &= PartionKeyIsAlsoExempted(originAttributes);
3210  }
3211 
3212  return !isExemptDomain;
3213}
3214 
3215// --------------------------------------------------------------------
3216 
3217/* static */
3218void nsContentUtils::CalcRoundedWindowSizeForResistingFingerprinting(
3219    int32_t aChromeWidth, int32_t aChromeHeight, int32_t aScreenWidth,
3220    int32_t aScreenHeight, int32_t aInputWidth, int32_t aInputHeight,
3221    bool aSetOuterWidth, bool aSetOuterHeight, int32_t* aOutputWidth,
3222    int32_t* aOutputHeight) {
3223  MOZ_ASSERT(aOutputWidth)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aOutputWidth)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aOutputWidth))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("aOutputWidth", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3223); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aOutputWidth"
 ")"); do { MOZ_CrashSequence(__null, 3223); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3224  MOZ_ASSERT(aOutputHeight)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aOutputHeight)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aOutputHeight))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("aOutputHeight",
 "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3224); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aOutputHeight" ")"); do { MOZ_CrashSequence
(__null, 3224); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3225 
3226  int32_t availContentWidth = 0;
3227  int32_t availContentHeight = 0;
3228 
3229  availContentWidth = std::min(StaticPrefs::privacy_window_maxInnerWidth(),
3230                               aScreenWidth - aChromeWidth);
3231#ifdef MOZ_WIDGET_GTK1
3232  // In the GTK window, it will not report outside system decorations
3233  // when we get available window size, see Bug 581863. So, we leave a
3234  // 40 pixels space for them when calculating the available content
3235  // height. It is not necessary for the width since the content width
3236  // is usually pretty much the same as the chrome width.
3237  availContentHeight = std::min(StaticPrefs::privacy_window_maxInnerHeight(),
3238                                (-40 + aScreenHeight) - aChromeHeight);
3239#else
3240  availContentHeight = std::min(StaticPrefs::privacy_window_maxInnerHeight(),
3241                                aScreenHeight - aChromeHeight);
3242#endif
3243 
3244  // Ideally, we'd like to round window size to 1000x1000, but the
3245  // screen space could be too small to accommodate this size in some
3246  // cases. If it happens, we would round the window size to the nearest
3247  // 200x100.
3248  availContentWidth = availContentWidth - (availContentWidth % 200);
3249  availContentHeight = availContentHeight - (availContentHeight % 100);
3250 
3251  // If aIsOuter is true, we are setting the outer window. So we
3252  // have to consider the chrome UI.
3253  int32_t chromeOffsetWidth = aSetOuterWidth ? aChromeWidth : 0;
3254  int32_t chromeOffsetHeight = aSetOuterHeight ? aChromeHeight : 0;
3255  int32_t resultWidth = 0, resultHeight = 0;
3256 
3257  // if the original size is greater than the maximum available size, we set
3258  // it to the maximum size. And if the original value is less than the
3259  // minimum rounded size, we set it to the minimum 200x100.
3260  if (aInputWidth > (availContentWidth + chromeOffsetWidth)) {
3261    resultWidth = availContentWidth + chromeOffsetWidth;
3262  } else if (aInputWidth < (200 + chromeOffsetWidth)) {
3263    resultWidth = 200 + chromeOffsetWidth;
3264  } else {
3265    // Otherwise, we round the window to the nearest upper rounded 200x100.
3266    resultWidth = NSToIntCeil((aInputWidth - chromeOffsetWidth) / 200.0) * 200 +
3267                  chromeOffsetWidth;
3268  }
3269 
3270  if (aInputHeight > (availContentHeight + chromeOffsetHeight)) {
3271    resultHeight = availContentHeight + chromeOffsetHeight;
3272  } else if (aInputHeight < (100 + chromeOffsetHeight)) {
3273    resultHeight = 100 + chromeOffsetHeight;
3274  } else {
3275    resultHeight =
3276        NSToIntCeil((aInputHeight - chromeOffsetHeight) / 100.0) * 100 +
3277        chromeOffsetHeight;
3278  }
3279 
3280  *aOutputWidth = resultWidth;
3281  *aOutputHeight = resultHeight;
3282}
3283 
3284bool nsContentUtils::ThreadsafeIsCallerChrome() {
3285  return NS_IsMainThread() ? IsCallerChrome()
3286                           : IsCurrentThreadRunningChromeWorker();
3287}
3288 
3289bool nsContentUtils::IsCallerUAWidget() {
3290  JSContext* cx = GetCurrentJSContext();
3291  if (!cx) {
3292    return false;
3293  }
3294 
3295  JS::Realm* realm = JS::GetCurrentRealmOrNull(cx);
3296  if (!realm) {
3297    return false;
3298  }
3299 
3300  return xpc::IsUAWidgetScope(realm);
3301}
3302 
3303bool nsContentUtils::IsSystemCaller(JSContext* aCx) {
3304  // Note that SubjectPrincipal() assumes we are in a compartment here.
3305  return SubjectPrincipal(aCx) == sSystemPrincipal;
3306}
3307 
3308bool nsContentUtils::ThreadsafeIsSystemCaller(JSContext* aCx) {
3309  CycleCollectedJSContext* ccjscx = CycleCollectedJSContext::Get();
3310  MOZ_ASSERT(ccjscx->Context() == aCx)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(ccjscx->Context() == aCx)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(ccjscx->Context() == aCx)
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("ccjscx->Context() == aCx"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3310); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "ccjscx->Context() == aCx" ")"); do { MOZ_CrashSequence
(__null, 3310); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3311 
3312  return ccjscx->IsSystemCaller();
3313}
3314 
3315// static
3316bool nsContentUtils::LookupBindingMember(
3317    JSContext* aCx, nsIContent* aContent, JS::Handle<jsid> aId,
3318    JS::MutableHandle<JS::PropertyDescriptor> aDesc) {
3319  return true;
3320}
3321 
3322nsINode* nsContentUtils::GetNearestInProcessCrossDocParentNode(
3323    nsINode* aChild) {
3324  if (aChild->IsDocument()) {
3325    for (BrowsingContext* bc = aChild->AsDocument()->GetBrowsingContext(); bc;
3326         bc = bc->GetParent()) {
3327      if (bc->GetEmbedderElement()) {
3328        return bc->GetEmbedderElement();
3329      }
3330    }
3331    return nullptr;
3332  }
3333 
3334  nsINode* parent = aChild->GetParentNode();
3335  if (parent && parent->IsContent() && aChild->IsContent()) {
3336    parent = aChild->AsContent()->GetFlattenedTreeParent();
3337  }
3338 
3339  return parent;
3340}
3341 
3342bool nsContentUtils::ContentIsHostIncludingDescendantOf(
3343    const nsINode* aPossibleDescendant, const nsINode* aPossibleAncestor) {
3344  MOZ_ASSERT(aPossibleDescendant, "The possible descendant is null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPossibleDescendant)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPossibleDescendant))), 0)))
 { do { } while (false); MOZ_ReportAssertionFailure("aPossibleDescendant"
 " (" "The possible descendant is null!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3344); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPossibleDescendant"
 ") (" "The possible descendant is null!" ")"); do { MOZ_CrashSequence
(__null, 3344); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3345  MOZ_ASSERT(aPossibleAncestor, "The possible ancestor is null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPossibleAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPossibleAncestor))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aPossibleAncestor"
 " (" "The possible ancestor is null!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3345); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPossibleAncestor"
 ") (" "The possible ancestor is null!" ")"); do { MOZ_CrashSequence
(__null, 3345); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3346 
3347  while (true) {
3348    if (aPossibleDescendant == aPossibleAncestor) {
3349      return true;
3350    }
3351    if (nsINode* parent = aPossibleDescendant->GetParentNode()) {
3352      aPossibleDescendant = parent;
3353      continue;
3354    }
3355    if (auto* df = DocumentFragment::FromNode(aPossibleDescendant)) {
3356      if (nsINode* host = df->GetHost()) {
3357        aPossibleDescendant = host;
3358        continue;
3359      }
3360    }
3361    break;
3362  }
3363  return false;
3364}
3365 
3366// static
3367bool nsContentUtils::ContentIsCrossDocDescendantOf(nsINode* aPossibleDescendant,
3368                                                   nsINode* aPossibleAncestor) {
3369  MOZ_ASSERT(aPossibleDescendant, "The possible descendant is null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPossibleDescendant)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPossibleDescendant))), 0)))
 { do { } while (false); MOZ_ReportAssertionFailure("aPossibleDescendant"
 " (" "The possible descendant is null!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3369); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPossibleDescendant"
 ") (" "The possible descendant is null!" ")"); do { MOZ_CrashSequence
(__null, 3369); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3370  MOZ_ASSERT(aPossibleAncestor, "The possible ancestor is null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPossibleAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPossibleAncestor))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aPossibleAncestor"
 " (" "The possible ancestor is null!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3370); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPossibleAncestor"
 ") (" "The possible ancestor is null!" ")"); do { MOZ_CrashSequence
(__null, 3370); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3371 
3372  do {
3373    if (aPossibleDescendant == aPossibleAncestor) {
3374      return true;
3375    }
3376 
3377    aPossibleDescendant =
3378        GetNearestInProcessCrossDocParentNode(aPossibleDescendant);
3379  } while (aPossibleDescendant);
3380 
3381  return false;
3382}
3383 
3384// static
3385bool nsContentUtils::ContentIsFlattenedTreeDescendantOf(
3386    const nsINode* aPossibleDescendant, const nsINode* aPossibleAncestor) {
3387  MOZ_ASSERT(aPossibleDescendant, "The possible descendant is null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPossibleDescendant)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPossibleDescendant))), 0)))
 { do { } while (false); MOZ_ReportAssertionFailure("aPossibleDescendant"
 " (" "The possible descendant is null!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3387); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPossibleDescendant"
 ") (" "The possible descendant is null!" ")"); do { MOZ_CrashSequence
(__null, 3387); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3388  MOZ_ASSERT(aPossibleAncestor, "The possible ancestor is null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPossibleAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPossibleAncestor))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aPossibleAncestor"
 " (" "The possible ancestor is null!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3388); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPossibleAncestor"
 ") (" "The possible ancestor is null!" ")"); do { MOZ_CrashSequence
(__null, 3388); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3389 
3390  do {
3391    if (aPossibleDescendant == aPossibleAncestor) {
3392      return true;
3393    }
3394    aPossibleDescendant = aPossibleDescendant->GetFlattenedTreeParentNode();
3395  } while (aPossibleDescendant);
3396 
3397  return false;
3398}
3399 
3400// static
3401bool nsContentUtils::ContentIsFlattenedTreeDescendantOfForStyle(
3402    const nsINode* aPossibleDescendant, const nsINode* aPossibleAncestor) {
3403  MOZ_ASSERT(aPossibleDescendant, "The possible descendant is null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPossibleDescendant)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPossibleDescendant))), 0)))
 { do { } while (false); MOZ_ReportAssertionFailure("aPossibleDescendant"
 " (" "The possible descendant is null!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3403); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPossibleDescendant"
 ") (" "The possible descendant is null!" ")"); do { MOZ_CrashSequence
(__null, 3403); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3404  MOZ_ASSERT(aPossibleAncestor, "The possible ancestor is null!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPossibleAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPossibleAncestor))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aPossibleAncestor"
 " (" "The possible ancestor is null!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3404); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPossibleAncestor"
 ") (" "The possible ancestor is null!" ")"); do { MOZ_CrashSequence
(__null, 3404); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3405 
3406  do {
3407    if (aPossibleDescendant == aPossibleAncestor) {
3408      return true;
3409    }
3410    aPossibleDescendant =
3411        aPossibleDescendant->GetFlattenedTreeParentNodeForStyle();
3412  } while (aPossibleDescendant);
3413 
3414  return false;
3415}
3416 
3417// static
3418nsINode* nsContentUtils::Retarget(nsINode* aTargetA, const nsINode* aTargetB) {
3419  while (true && aTargetA) {
3420    // If A's root is not a shadow root...
3421    nsINode* root = aTargetA->SubtreeRoot();
3422    if (!root->IsShadowRoot()) {
3423      // ...then return A.
3424      return aTargetA;
3425    }
3426 
3427    // or A's root is a shadow-including inclusive ancestor of B...
3428    if (aTargetB && aTargetB->IsShadowIncludingInclusiveDescendantOf(root)) {
3429      // ...then return A.
3430      return aTargetA;
3431    }
3432 
3433    aTargetA = ShadowRoot::FromNode(root)->GetHost();
3434  }
3435 
3436  return nullptr;
3437}
3438 
3439// static
3440Element* nsContentUtils::GetAnElementForTiming(Element* aTarget,
3441                                               const Document* aDocument,
3442                                               nsIGlobalObject* aGlobal) {
3443  if (!aTarget->IsInComposedDoc()) {
3444    return nullptr;
3445  }
3446 
3447  if (!aDocument) {
3448    nsCOMPtr<nsPIDOMWindowInner> inner = do_QueryInterface(aGlobal);
3449    if (!inner) {
3450      return nullptr;
3451    }
3452    aDocument = inner->GetExtantDoc();
3453  }
3454 
3455  MOZ_ASSERT(aDocument)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aDocument)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aDocument))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aDocument", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3455); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aDocument" ")"
); do { MOZ_CrashSequence(__null, 3455); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3456 
3457  if (aTarget->GetUncomposedDocOrConnectedShadowRoot() != aDocument ||
3458      !aDocument->IsCurrentActiveDocument()) {
3459    return nullptr;
3460  }
3461 
3462  return aTarget;
3463}
3464 
3465// static
3466nsresult nsContentUtils::GetInclusiveAncestors(nsINode* aNode,
3467                                               nsTArray<nsINode*>& aArray) {
3468  while (aNode) {
3469    aArray.AppendElement(aNode);
3470    aNode = aNode->GetParentNode();
3471  }
3472  return NS_OK;
3473}
3474 
3475// static
3476template <typename GetParentFunc, typename ComputeChildIndexFunc>
3477nsresult static GetInclusiveAncestorsAndOffsetsHelper(
3478    nsINode* aNode, uint32_t aOffset, nsTArray<nsIContent*>& aAncestorNodes,
3479    nsTArray<Maybe<uint32_t>>& aAncestorOffsets, GetParentFunc aGetParentFunc,
3480    ComputeChildIndexFunc aComputeChildIndexFunc) {
3481  NS_ENSURE_ARG_POINTER(aNode)do { if ((__builtin_expect(!!(!(aNode)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aNode" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3481); return
 NS_ERROR_INVALID_POINTER; } } while (false);
3482 
3483  if (!aNode->IsContent()) {
3484    return NS_ERROR_FAILURE;
3485  }
3486  nsIContent* content = aNode->AsContent();
3487 
3488  if (!aAncestorNodes.IsEmpty()) {
3489    NS_WARNING("aAncestorNodes is not empty")NS_DebugBreak(NS_DEBUG_WARNING, "aAncestorNodes is not empty"
, nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 3489);
3490    aAncestorNodes.Clear();
3491  }
3492 
3493  if (!aAncestorOffsets.IsEmpty()) {
3494    NS_WARNING("aAncestorOffsets is not empty")NS_DebugBreak(NS_DEBUG_WARNING, "aAncestorOffsets is not empty"
, nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 3494);
3495    aAncestorOffsets.Clear();
3496  }
3497 
3498  // insert the node itself
3499  aAncestorNodes.AppendElement(content);
3500  aAncestorOffsets.AppendElement(Some(aOffset));
3501 
3502  // insert all the ancestors
3503  nsIContent* child = content;
3504  nsIContent* parent = aGetParentFunc(child);
3505  while (parent) {
3506    aAncestorNodes.AppendElement(parent->AsContent());
3507    aAncestorOffsets.AppendElement(aComputeChildIndexFunc(parent, child));
3508    child = parent;
3509    parent = aGetParentFunc(child);
3510  }
3511 
3512  return NS_OK;
3513}
3514 
3515nsresult nsContentUtils::GetInclusiveAncestorsAndOffsets(
3516    nsINode* aNode, uint32_t aOffset, nsTArray<nsIContent*>& aAncestorNodes,
3517    nsTArray<Maybe<uint32_t>>& aAncestorOffsets) {
3518  return GetInclusiveAncestorsAndOffsetsHelper(
3519      aNode, aOffset, aAncestorNodes, aAncestorOffsets,
3520      [](nsIContent* aContent) { return aContent->GetParent(); },
3521      [](nsIContent* aParent, nsIContent* aChild) {
3522        return aParent->ComputeIndexOf(aChild);
3523      });
3524}
3525 
3526nsresult nsContentUtils::GetFlattenedTreeAncestorsAndOffsetsForSelection(
3527    nsINode* aNode, uint32_t aOffset, nsTArray<nsIContent*>& aAncestorNodes,
3528    nsTArray<Maybe<uint32_t>>& aAncestorOffsets) {
3529  return GetInclusiveAncestorsAndOffsetsHelper(
3530      aNode, aOffset, aAncestorNodes, aAncestorOffsets,
3531      [](nsIContent* aContent) -> nsIContent* {
3532        return nsIContent::FromNodeOrNull(
3533            GetParentNodeForComparison<TreeKind::FlatForSelection>::Get(
3534                aContent));
3535      },
3536      [](nsIContent* aParent, nsIContent* aChild) {
3537        return GetParentNodeForComparison<
3538            TreeKind::FlatForSelection>::ComputeChildIndex(aParent, aChild);
3539      });
3540}
3541 
3542/* static */
3543nsINode* nsContentUtils::GetCommonAncestorHelper(nsINode* aNode1,
3544                                                 nsINode* aNode2) {
3545  MOZ_ASSERT(aNode1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode1)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(aNode1))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aNode1", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3545); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode1" ")"
); do { MOZ_CrashSequence(__null, 3545); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3546  MOZ_ASSERT(aNode2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode2)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(aNode2))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aNode2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3546); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode2" ")"
); do { MOZ_CrashSequence(__null, 3546); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3547  return CommonAncestors<GetParentNode>(*aNode1, *aNode2)
3548      .GetClosestCommonAncestor();
3549}
3550 
3551/* static */
3552nsINode* nsContentUtils::GetClosestCommonShadowIncludingInclusiveAncestor(
3553    nsINode* aNode1, nsINode* aNode2) {
3554  if (aNode1 == aNode2) {
3555    return aNode1;
3556  }
3557 
3558  MOZ_ASSERT(aNode1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode1)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(aNode1))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aNode1", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3558); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode1" ")"
); do { MOZ_CrashSequence(__null, 3558); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3559  MOZ_ASSERT(aNode2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode2)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(aNode2))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aNode2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3559); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode2" ")"
); do { MOZ_CrashSequence(__null, 3559); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3560  return CommonAncestors<GetParentOrShadowHostNode>(*aNode1, *aNode2)
3561      .GetClosestCommonAncestor();
3562}
3563 
3564/* static */
3565nsIContent* nsContentUtils::GetCommonFlattenedTreeAncestorHelper(
3566    nsIContent* aContent1, nsIContent* aContent2) {
3567  MOZ_ASSERT(aContent1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aContent1)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aContent1))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aContent1", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3567); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContent1" ")"
); do { MOZ_CrashSequence(__null, 3567); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3568  MOZ_ASSERT(aContent2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aContent2)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aContent2))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aContent2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3568); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContent2" ")"
); do { MOZ_CrashSequence(__null, 3568); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3569  return CommonAncestors<GetFlattenedTreeParent>(*aContent1, *aContent2)
3570      .GetClosestCommonAncestor();
3571}
3572 
3573/* static */
3574nsINode* nsContentUtils::GetCommonFlattenedTreeAncestorForSelection(
3575    nsINode* aNode1, nsINode* aNode2) {
3576  if (aNode1 == aNode2) {
3577    return aNode1;
3578  }
3579  MOZ_ASSERT(aNode1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode1)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(aNode1))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aNode1", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3579); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode1" ")"
); do { MOZ_CrashSequence(__null, 3579); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3580  MOZ_ASSERT(aNode2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode2)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(aNode2))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aNode2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3580); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode2" ")"
); do { MOZ_CrashSequence(__null, 3580); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3581  return CommonAncestors<GetFlattenedTreeParentNodeForSelection>(*aNode1,
3582                                                                 *aNode2)
3583      .GetClosestCommonAncestor();
3584}
3585 
3586/* static */
3587Element* nsContentUtils::GetCommonFlattenedTreeAncestorForStyle(
3588    Element* aElement1, Element* aElement2) {
3589  MOZ_ASSERT(aElement1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElement1)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aElement1))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aElement1", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3589); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aElement1" ")"
); do { MOZ_CrashSequence(__null, 3589); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3590  MOZ_ASSERT(aElement2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElement2)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aElement2))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aElement2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3590); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aElement2" ")"
); do { MOZ_CrashSequence(__null, 3590); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3591  return CommonAncestors<GetFlattenedTreeParentElementForStyle>(*aElement1,
3592                                                                *aElement2)
3593      .GetClosestCommonAncestor();
3594}
3595 
3596/* static */
3597template <TreeKind aKind, typename Dummy>
3598Maybe<int32_t> nsContentUtils::CompareChildNodes(
3599    const nsINode& aParent, const nsIContent* aChild1,
3600    const nsIContent* aChild2, NodeIndexCache* aIndexCache /* = nullptr */) {
3601  MOZ_ASSERT_IF(aKind != TreeKind::DOM && aChild1,do { if (aKind != TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(aChild1) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(aChild1) == &aParent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3602); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3602); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3602                GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent)do { if (aKind != TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(aChild1) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(aChild1) == &aParent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3602); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3602); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3603  MOZ_ASSERT_IF(aKind != TreeKind::DOM && aChild2,do { if (aKind != TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(aChild2) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(aChild2) == &aParent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3604); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3604); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3604                GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent)do { if (aKind != TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(aChild2) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(aChild2) == &aParent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3604); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3604); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3605  // See the explanation of TreeKindToCompareChildren. aParent may be computed
3606  // with TreeKind::ShadowIncludingDOM if aKind is TreeKind::DOM.
3607  MOZ_ASSERT_IF(do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3611); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3611); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3608      aKind == TreeKind::DOM && aChild1,do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3611); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3611); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3609      GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent ||do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3611); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3611); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3610          GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get(do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3611); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3611); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3611              aChild1) == &aParent)do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3611); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3611); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3612  MOZ_ASSERT_IF(do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3616); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3616); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3613      aKind == TreeKind::DOM && aChild2,do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3616); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3616); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3614      GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent ||do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3616); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3616); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3615          GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get(do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3616); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3616); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3616              aChild2) == &aParent)do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3616); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3616); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3617 
3618  // FIXME: bug 1946003 and bug 1946008.
3619  if ((aChild1 && NS_WARN_IF(aChild1->IsDocumentFragment())NS_warn_if_impl(aChild1->IsDocumentFragment(), "aChild1->IsDocumentFragment()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3619)) ||
3620      (aChild2 && NS_WARN_IF(aChild2->IsDocumentFragment())NS_warn_if_impl(aChild2->IsDocumentFragment(), "aChild2->IsDocumentFragment()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3620))) [[unlikely]] {
3621    return Nothing();
3622  }
3623  if (MOZ_UNLIKELY(aChild1 == aChild2)(__builtin_expect(!!(aChild1 == aChild2), 0))) {
3624    return Some(0);
3625  }
3626  MOZ_ASSERT(aChild1 || aChild2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aChild1 || aChild2)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aChild1 || aChild2))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aChild1 || aChild2"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3626); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aChild1 || aChild2" ")"); do { MOZ_CrashSequence
(__null, 3626); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3627  // Native anonymous content (e.g. ::before/::after pseudo-elements) is not in
3628  // the regular child list, so the sibling/index fast paths below cannot order
3629  // it against regular children or the end-of-children boundary (a null child).
3630  // GetIndexInParent assigns flat-tree-consistent indices to NAC roots, so use
3631  // it to order the points instead.
3632  if (MOZ_UNLIKELY((aChild1 && aChild1->IsRootOfNativeAnonymousSubtree()) ||(__builtin_expect(!!((aChild1 && aChild1->IsRootOfNativeAnonymousSubtree
()) || (aChild2 && aChild2->IsRootOfNativeAnonymousSubtree
())), 0))
3633                   (aChild2 && aChild2->IsRootOfNativeAnonymousSubtree()))(__builtin_expect(!!((aChild1 && aChild1->IsRootOfNativeAnonymousSubtree
()) || (aChild2 && aChild2->IsRootOfNativeAnonymousSubtree
())), 0))) {
3634    const nsINode& parent =
3635        aChild1 ? *GetParentNodeForComparison<aKind>::Get(aChild1)
3636                : *GetParentNodeForComparison<aKind>::Get(aChild2);
3637    // A null child is the boundary at the end of the parent's regular child
3638    // list (offset == number of regular children). Regular children occupy
3639    // indices [0, regularCount) in the index space assigned by
3640    // GetIndexInParent, while trailing NAC (other anonymous subtrees and
3641    // ::after) start at regularCount. The discriminator here must match the
3642    // one in GetIndexInParent so the boundary lands in the same index space:
3643    // only the flat tree indexes regular children via the flattened iterator;
3644    // DOM and ShadowIncludingDOM both index them via ComputeIndexOf.
3645    const int32_t regularCount =
3646        aKind == TreeKind::Flat
3647            ? int32_t(FlattenedChildIterator::GetLength(&parent))
3648            : int32_t(parent.GetChildCount());
3649    const auto indexOf = [&](const nsIContent* aChild) -> Maybe<int32_t> {
3650      if (!aChild) {
3651        return Some(regularCount);
3652      }
3653      return aIndexCache ? aIndexCache->ComputeIndexOf<aKind>(&parent, aChild)
3654                         : GetIndexInParent<aKind>(&parent, aChild);
3655    };
3656    const Maybe<int32_t> child1Index = indexOf(aChild1);
3657    const Maybe<int32_t> child2Index = indexOf(aChild2);
3658    if (MOZ_LIKELY(child1Index.isSome() && child2Index.isSome())(__builtin_expect(!!(child1Index.isSome() && child2Index
.isSome()), 1))) {
3659      if (*child1Index != *child2Index) {
3660        return Some(*child1Index < *child2Index ? -1 : 1);
3661      }
3662      // Equal indices only happen when one child is the end-of-children
3663      // boundary (null) and the other is the first trailing NAC subtree at the
3664      // same index. The boundary precedes trailing NAC in tree order.
3665      if (!aChild1) {
3666        return Some(-1);
3667      }
3668      if (!aChild2) {
3669        return Some(1);
3670      }
3671    }
3672    // XXX Keep the odd traditional behavior for now.
3673    return Some(1);
3674  }
3675  if (!aChild1) {  // i.e., end of parent vs aChild2
3676    return Some(1);
3677  }
3678  if (!aChild2) {  // i.e., aChild1 vs. end of parent
3679    return Some(-1);
3680  }
3681 
3682  if constexpr (aKind == TreeKind::FlatForSelection) {
3683    // If we're handling flattened tree for selection, aChild1 and/or aChild2
3684    // may be:
3685    // - fallback content of a <slot> which has some assigned nodes
3686    // - unassigned child node of a shadow host
3687    // Even though they are not part of the flattened tree, but they are also
3688    // valid for range boundaries. Therefore, we need to handle the case here.
3689    if (aParent.GetAsHTMLSlotElementIfFilledForSelection() ||
3690        aParent.GetShadowRootForSelection()) {
3691      if (aChild1->GetParentNode() == &aParent) {
3692        if (aChild2->GetParentNode() == &aParent) {
3693          // If both aChild1 and aChild2 are the fallback content or the
3694          // unassigned children of a shadow host, compare them in the DOM.
3695          return CompareChildNodes<TreeKind::DOM>(aParent, aChild1, aChild2);
3696        }
3697        // If only aChild1 is the fallback content or the unassigned child,
3698        // let's treat it as after the last assigned node.
3699        return Some(1);
3700      }
3701      if (aChild2->GetParentNode() == &aParent) {
3702        // If only aChild2 is the fallback content or the unassigned child,
3703        // let's treat it as after the last assigned node for now.
3704        return Some(-1);
3705      }
3706    }
3707  }
3708 
3709  if constexpr (ShouldHandleAssignedNodesOnSlot<aKind>()) {
3710    HTMLSlotElement* const slot1 = aChild1->GetAssignedSlot<aKind>();
3711    HTMLSlotElement* const slot2 = aChild2->GetAssignedSlot<aKind>();
3712    if (slot1 || slot2) {
3713      // If they are assigned into a same <slot>, compare the index.
3714      if (slot1 == slot2) {
3715        const auto* slot = HTMLSlotElement::FromNode(aParent);
3716        MOZ_ASSERT(slot)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(slot)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(slot))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("slot", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3716); AnnotateMozCrashReason("MOZ_ASSERT" "(" "slot" ")");
 do { MOZ_CrashSequence(__null, 3716); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3717 
3718        constexpr auto NoIndex = size_t(-1);
3719        auto child1Index = NoIndex;
3720        auto child2Index = NoIndex;
3721        size_t index = 0;
3722        for (nsINode* node : slot->AssignedNodes()) {
3723          if (node == aChild1) {
3724            child1Index = index;
3725            if (child2Index != NoIndex) {
3726              break;
3727            }
3728          } else if (node == aChild2) {
3729            child2Index = index;
3730            if (child1Index != NoIndex) {
3731              break;
3732            }
3733          }
3734          index++;
3735        }
3736 
3737        MOZ_ASSERT(child1Index != NoIndex)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(child1Index != NoIndex)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(child1Index != NoIndex))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("child1Index != NoIndex"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3737); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "child1Index != NoIndex" ")"); do { MOZ_CrashSequence
(__null, 3737); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3738        MOZ_ASSERT(child2Index != NoIndex)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(child2Index != NoIndex)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(child2Index != NoIndex))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("child2Index != NoIndex"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3738); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "child2Index != NoIndex" ")"); do { MOZ_CrashSequence
(__null, 3738); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3739 
3740        return Some(child1Index < child2Index ? -1 : 1);
3741      }
3742      NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "aChild1 and aChild2 are not in same "
 "<slot>:\naChild1={}\nslot1={}\naChild2={}\nslot2={}\n"
, ToString(*aChild1).c_str(), ToString(RefPtr{slot1}).c_str()
, ToString(*aChild2).c_str(), ToString(RefPtr{slot2}).c_str()
) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3748)
3743          fmt::format(NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "aChild1 and aChild2 are not in same "
 "<slot>:\naChild1={}\nslot1={}\naChild2={}\nslot2={}\n"
, ToString(*aChild1).c_str(), ToString(RefPtr{slot1}).c_str()
, ToString(*aChild2).c_str(), ToString(RefPtr{slot2}).c_str()
) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3748)
3744              "aChild1 and aChild2 are not in same "NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "aChild1 and aChild2 are not in same "
 "<slot>:\naChild1={}\nslot1={}\naChild2={}\nslot2={}\n"
, ToString(*aChild1).c_str(), ToString(RefPtr{slot1}).c_str()
, ToString(*aChild2).c_str(), ToString(RefPtr{slot2}).c_str()
) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3748)
3745              "<slot>:\naChild1={}\nslot1={}\naChild2={}\nslot2={}\n",NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "aChild1 and aChild2 are not in same "
 "<slot>:\naChild1={}\nslot1={}\naChild2={}\nslot2={}\n"
, ToString(*aChild1).c_str(), ToString(RefPtr{slot1}).c_str()
, ToString(*aChild2).c_str(), ToString(RefPtr{slot2}).c_str()
) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3748)
3746              ToString(*aChild1).c_str(), ToString(RefPtr{slot1}).c_str(),NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "aChild1 and aChild2 are not in same "
 "<slot>:\naChild1={}\nslot1={}\naChild2={}\nslot2={}\n"
, ToString(*aChild1).c_str(), ToString(RefPtr{slot1}).c_str()
, ToString(*aChild2).c_str(), ToString(RefPtr{slot2}).c_str()
) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3748)
3747              ToString(*aChild2).c_str(), ToString(RefPtr{slot2}).c_str())NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "aChild1 and aChild2 are not in same "
 "<slot>:\naChild1={}\nslot1={}\naChild2={}\nslot2={}\n"
, ToString(*aChild1).c_str(), ToString(RefPtr{slot1}).c_str()
, ToString(*aChild2).c_str(), ToString(RefPtr{slot2}).c_str()
) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3748)
3748              .c_str())NS_DebugBreak(NS_DEBUG_WARNING, fmt::format( "aChild1 and aChild2 are not in same "
 "<slot>:\naChild1={}\nslot1={}\naChild2={}\nslot2={}\n"
, ToString(*aChild1).c_str(), ToString(RefPtr{slot1}).c_str()
, ToString(*aChild2).c_str(), ToString(RefPtr{slot2}).c_str()
) .c_str(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3748);
3749      MOZ_ASSERT(!slot1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!slot1)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(!slot1))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("!slot1", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3749); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!slot1" ")"
); do { MOZ_CrashSequence(__null, 3749); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3750      MOZ_ASSERT(!slot2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!slot2)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(!slot2))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("!slot2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3750); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!slot2" ")"
); do { MOZ_CrashSequence(__null, 3750); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3751      return Nothing();
3752    }
3753  }
3754 
3755  ChildIteratorBase<aKind> iter(&aParent);
3756 
3757  // If the parent node is not a shadow host, we can use
3758  // nsINode::GetNextSibling() and nsINode::GetPreviousSibling() in any trees
3759  // so that we can check whether aChild1 and aChild2 are adjacent siblings.
3760  if (MOZ_LIKELY(!iter.ShadowDOMInvolved())(__builtin_expect(!!(!iter.ShadowDOMInvolved()), 1))) {
3761    if (aChild1->GetNextSibling() == aChild2) {
3762      return Some(-1);
3763    }
3764    if (aChild2->GetNextSibling() == aChild1) {
3765      return Some(1);
3766    }
3767  }
3768 
3769  // Retrieving the first child and the last child is not expensive so, let's
3770  // check whether aChild1 or aChild2 is the first/last child.
3771  const nsIContent* lastChild = iter.GetLastChild();
3772  MOZ_ASSERT(lastChild)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(lastChild)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(lastChild))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("lastChild", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3772); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lastChild" ")"
); do { MOZ_CrashSequence(__null, 3772); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3773  if (aChild1 == lastChild) {
3774    return Some(1);
3775  }
3776  if (aChild2 == lastChild) {
3777    return Some(-1);
3778  }
3779  const nsIContent* firstChild = iter.GetFirstChild();
3780  MOZ_ASSERT(firstChild)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(firstChild)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(firstChild))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("firstChild", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3780); AnnotateMozCrashReason("MOZ_ASSERT" "(" "firstChild"
 ")"); do { MOZ_CrashSequence(__null, 3780); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3781  MOZ_ASSERT(firstChild != lastChild)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(firstChild != lastChild)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(firstChild != lastChild))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("firstChild != lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3781); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "firstChild != lastChild" ")"); do { MOZ_CrashSequence
(__null, 3781); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
3782  if (aChild1 == firstChild) {
3783    return Some(-1);
3784  }
3785  if (aChild2 == firstChild) {
3786    return Some(1);
3787  }
3788 
3789  // nsINode::ComputeIndexOf() computes the index with scanning siblings from
3790  // the first child in the worst case.  However, if the node caches the
3791  // computed result, the scan range may be narrowed in fortunate cases.
3792  // Therefore, if the node uses the cache, we should use it because the callers
3793  // may need to compute the index again.  In such cases, the cache saves the
3794  // computation cost.
3795  if (aParent.MaybeCachesComputedIndex()) {
3796    Maybe<uint32_t> child1Index;
3797    Maybe<uint32_t> child2Index;
3798    if (aIndexCache) {
3799      Maybe<int32_t> maybeGenContentChild1Index;
3800      Maybe<int32_t> maybeGenContentChild2Index;
3801      aIndexCache->ComputeIndicesOf<aKind>(&aParent, aChild1, aChild2,
3802                                           maybeGenContentChild1Index,
3803                                           maybeGenContentChild2Index);
3804      // Negative offset if the child is generated content or native anonymous
3805      // content. However, this method does not support such nodes. Therefore,
3806      // we should treat them as "disconnected".
3807      if (maybeGenContentChild1Index && *maybeGenContentChild1Index >= 0) {
3808        child1Index.emplace(static_cast<uint32_t>(*maybeGenContentChild1Index));
3809      }
3810      if (maybeGenContentChild2Index && *maybeGenContentChild2Index >= 0) {
3811        child2Index.emplace(static_cast<uint32_t>(*maybeGenContentChild2Index));
3812      }
3813#ifdef DEBUG1
3814      const Maybe<uint32_t> child1IndexDebug =
3815          aParent.ComputeIndexOf<aKind>(aChild1);
3816      NS_WARNING_ASSERTION(do { if (!(child1Index == child1IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child1IndexDebug), ToString
(child1Index), ToString(aParent), ToString(*aChild1)) .c_str(
), "child1Index == child1IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3822); } } while (false)
3817          child1Index == child1IndexDebug,do { if (!(child1Index == child1IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child1IndexDebug), ToString
(child1Index), ToString(aParent), ToString(*aChild1)) .c_str(
), "child1Index == child1IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3822); } } while (false)
3818          fmt::format("aIndexCache causes wrong index: expected {}, but got "do { if (!(child1Index == child1IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child1IndexDebug), ToString
(child1Index), ToString(aParent), ToString(*aChild1)) .c_str(
), "child1Index == child1IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3822); } } while (false)
3819                      "{}\naParent={}\naChild1={}\n",do { if (!(child1Index == child1IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child1IndexDebug), ToString
(child1Index), ToString(aParent), ToString(*aChild1)) .c_str(
), "child1Index == child1IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3822); } } while (false)
3820                      ToString(child1IndexDebug), ToString(child1Index),do { if (!(child1Index == child1IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child1IndexDebug), ToString
(child1Index), ToString(aParent), ToString(*aChild1)) .c_str(
), "child1Index == child1IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3822); } } while (false)
3821                      ToString(aParent), ToString(*aChild1))do { if (!(child1Index == child1IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child1IndexDebug), ToString
(child1Index), ToString(aParent), ToString(*aChild1)) .c_str(
), "child1Index == child1IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3822); } } while (false)
3822              .c_str())do { if (!(child1Index == child1IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child1IndexDebug), ToString
(child1Index), ToString(aParent), ToString(*aChild1)) .c_str(
), "child1Index == child1IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3822); } } while (false);
3823      MOZ_ASSERT(child1Index == child1IndexDebug)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(child1Index == child1IndexDebug)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(child1Index == child1IndexDebug
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"child1Index == child1IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3823); AnnotateMozCrashReason("MOZ_ASSERT" "(" "child1Index == child1IndexDebug"
 ")"); do { MOZ_CrashSequence(__null, 3823); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3824      const Maybe<uint32_t> child2IndexDebug =
3825          aParent.ComputeIndexOf<aKind>(aChild2);
3826      NS_WARNING_ASSERTION(do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(*aChild2)) .c_str(
), "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3832); } } while (false)
3827          child2Index == child2IndexDebug,do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(*aChild2)) .c_str(
), "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3832); } } while (false)
3828          fmt::format("aIndexCache causes wrong index: expected {}, but got "do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(*aChild2)) .c_str(
), "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3832); } } while (false)
3829                      "{}\naParent={}\naChild1={}\n",do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(*aChild2)) .c_str(
), "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3832); } } while (false)
3830                      ToString(child2IndexDebug), ToString(child2Index),do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(*aChild2)) .c_str(
), "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3832); } } while (false)
3831                      ToString(aParent), ToString(*aChild2))do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(*aChild2)) .c_str(
), "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3832); } } while (false)
3832              .c_str())do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(*aChild2)) .c_str(
), "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3832); } } while (false);
3833      MOZ_ASSERT(child2Index == child2IndexDebug)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(child2Index == child2IndexDebug)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(child2Index == child2IndexDebug
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3833); AnnotateMozCrashReason("MOZ_ASSERT" "(" "child2Index == child2IndexDebug"
 ")"); do { MOZ_CrashSequence(__null, 3833); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3834#endif  // #ifdef DEBUG
3835    } else {
3836      child1Index = aParent.ComputeIndexOf<aKind>(aChild1);
3837      child2Index = aParent.ComputeIndexOf<aKind>(aChild2);
3838    }
3839    if (MOZ_LIKELY(child1Index.isSome() && child2Index.isSome())(__builtin_expect(!!(child1Index.isSome() && child2Index
.isSome()), 1))) {
3840      MOZ_ASSERT(*child1Index != *child2Index)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(*child1Index != *child2Index)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*child1Index != *child2Index
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"*child1Index != *child2Index", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3840); AnnotateMozCrashReason("MOZ_ASSERT" "(" "*child1Index != *child2Index"
 ")"); do { MOZ_CrashSequence(__null, 3840); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3841      return Some(*child1Index < *child2Index ? -1 : 1);
3842    }
3843    // XXX Keep the odd traditional behavior for now.
3844    return Some(child1Index.isNothing() && child2Index.isSome() ? -1 : 1);
3845  }
3846 
3847  // On the other hand, it does not use the cache, let's scan siblings starting
3848  // from aChild1. Then, if we find aChild2, the position is aChild1 < aChild2.
3849  // Otherwise, aChild2 < aChild1.  This narrows the scanning range than using
3850  // ComputeIndexOf(), i.e., even in the worst case, this is faster than a call
3851  // of ComputeIndexOf().
3852  if (NS_WARN_IF(!iter.Seek(aChild1))NS_warn_if_impl(!iter.Seek(aChild1), "!iter.Seek(aChild1)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3852)) {
3853    return Nothing{};
3854  }
3855  for (const nsIContent* followingSiblingOfChild1 = iter.GetNextChild();
3856       followingSiblingOfChild1;
3857       followingSiblingOfChild1 = iter.GetNextChild()) {
3858    if (followingSiblingOfChild1 == aChild2) {
3859      return Some(-1);
3860    }
3861  }
3862  MOZ_ASSERT(aParent.ComputeIndexOf<aKind>(aChild2).isSome())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aParent.ComputeIndexOf<aKind>(aChild2).isSome(
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aParent.ComputeIndexOf<aKind>(aChild2).isSome(
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aParent.ComputeIndexOf<aKind>(aChild2).isSome()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3862); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent.ComputeIndexOf<aKind>(aChild2).isSome()"
 ")"); do { MOZ_CrashSequence(__null, 3862); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
3863  return Some(1);
3864}
3865 
3866/* static */
3867template <TreeKind aKind, typename Dummy>
3868Maybe<int32_t> nsContentUtils::CompareClosestCommonAncestorChildren(
3869    const nsINode& aParent, const nsIContent* aChild1,
3870    const nsIContent* aChild2, nsContentUtils::NodeIndexCache* aIndexCache) {
3871  MOZ_ASSERT_IF(aKind != TreeKind::DOM && aChild1,do { if (aKind != TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(aChild1) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(aChild1) == &aParent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3872); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3872); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3872                GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent)do { if (aKind != TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(aChild1) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(aChild1) == &aParent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3872); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3872); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3873  MOZ_ASSERT_IF(aKind != TreeKind::DOM && aChild2,do { if (aKind != TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(aChild2) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(aChild2) == &aParent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3874); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3874); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3874                GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent)do { if (aKind != TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(aChild2) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(aChild2) == &aParent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3874); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3874); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3875  // See the explanation of TreeKindToCompareChildren. aParent may be computed
3876  // with TreeKind::ShadowIncludingDOM if aKind is TreeKind::DOM.
3877  MOZ_ASSERT_IF(do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3881); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3881); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3878      aKind == TreeKind::DOM && aChild1,do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3881); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3881); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3879      GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent ||do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3881); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3881); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3880          GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get(do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3881); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3881); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3881              aChild1) == &aParent)do { if (aKind == TreeKind::DOM && aChild1) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild1) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild1) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3881); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild1) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild1) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3881); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3882  MOZ_ASSERT_IF(do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3886); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3886); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3883      aKind == TreeKind::DOM && aChild2,do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3886); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3886); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3884      GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent ||do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3886); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3886); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3885          GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get(do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3886); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3886); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3886              aChild2) == &aParent)do { if (aKind == TreeKind::DOM && aChild2) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(aChild2) == &aParent || GetParentNodeForComparison<TreeKind
::ShadowIncludingDOM>::Get( aChild2) == &aParent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3886); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 3886); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3887 
3888  if (aChild1 && aChild2) {
3889    if (MOZ_UNLIKELY(aChild1->IsShadowRoot())(__builtin_expect(!!(aChild1->IsShadowRoot()), 0))) {
3890      // Shadow roots come before light DOM per
3891      // https://dom.spec.whatwg.org/#concept-shadow-including-tree-order
3892      MOZ_ASSERT(!aChild2->IsShadowRoot(), "Two shadow roots?")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aChild2->IsShadowRoot())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aChild2->IsShadowRoot())
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aChild2->IsShadowRoot()"
 " (" "Two shadow roots?" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3892); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aChild2->IsShadowRoot()"
 ") (" "Two shadow roots?" ")"); do { MOZ_CrashSequence(__null
, 3892); __attribute__((nomerge)) ::abort(); } while (false);
 } } while (false);
3893      return Some(-1);
3894    }
3895    if (MOZ_UNLIKELY(aChild2->IsShadowRoot())(__builtin_expect(!!(aChild2->IsShadowRoot()), 0))) {
3896      return Some(1);
3897    }
3898  }
3899  // FIXME: bug 1946003 and bug 1946008.
3900  if (MOZ_UNLIKELY((aChild1 && aChild1->IsDocumentFragment()) ||(__builtin_expect(!!((aChild1 && aChild1->IsDocumentFragment
()) || (aChild2 && aChild2->IsDocumentFragment()))
, 0))
3901                   (aChild2 && aChild2->IsDocumentFragment()))(__builtin_expect(!!((aChild1 && aChild1->IsDocumentFragment
()) || (aChild2 && aChild2->IsDocumentFragment()))
, 0))) {
3902    // XXX Keep the odd traditional behavior for now.  I think that we should
3903    // return Nothing in this case.
3904    return Some(1);
3905  }
3906 
3907  const Maybe<int32_t> comp = nsContentUtils::CompareChildNodes<aKind>(
3908      aParent, aChild1, aChild2, aIndexCache);
3909  if (MOZ_UNLIKELY(comp.isNothing())(__builtin_expect(!!(comp.isNothing()), 0))) {
3910    NS_ASSERTION(comp.isSome(),do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3912); MOZ_PretendNoReturn
(); } } while (0)
3911                 "nsContentUtils::CompareChildNodes() must return Some here. "do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3912); MOZ_PretendNoReturn
(); } } while (0)
3912                 "It should've already checked before we call it.")do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3912); MOZ_PretendNoReturn
(); } } while (0);
3913    // XXX Keep the odd traditional behavior for now.  I think that we should
3914    // return Nothing in this case.
3915    return Some(1);
3916  }
3917#ifdef DEBUG1
3918  const auto NodeIsNullOrValidChild = [](const nsINode& aParent,
3919                                         const nsIContent* aChild) {
3920    if (!aChild || aParent.ComputeIndexOf<aKind>(aChild).isSome()) {
3921      return true;
3922    }
3923    if constexpr (aKind == TreeKind::FlatForSelection) {
3924      const Element* const excluderShadowHostOrSlotElement =
3925          aChild->GetClosestFlatTreeAncestorElementForNonFlatTreeNode<
3926              TreeKind::FlatForSelection>();
3927      if (excluderShadowHostOrSlotElement &&
3928          (excluderShadowHostOrSlotElement == &aParent ||
3929           excluderShadowHostOrSlotElement->GetShadowRootForSelection() ==
3930               &aParent)) {
3931        return true;
3932      }
3933    }
3934    return false;
3935  };
3936  const auto ChildrenHaveSameIndex = [](const nsIContent* aChild1,
3937                                        const nsIContent* aChild2) {
3938    if (aChild1 == aChild2) {
3939      return true;
3940    }
3941    const bool child1IsAtEndOfParent =
3942        !aChild1 ||
3943        (aKind == TreeKind::FlatForSelection &&
3944         aChild1->GetClosestFlatTreeAncestorElementForNonFlatTreeNode<
3945             TreeKind::FlatForSelection>());
3946    const bool child2IsAtEndOfParent =
3947        !aChild2 ||
3948        (aKind == TreeKind::FlatForSelection &&
3949         aChild2->GetClosestFlatTreeAncestorElementForNonFlatTreeNode<
3950             TreeKind::FlatForSelection>());
3951    return child1IsAtEndOfParent && child2IsAtEndOfParent;
3952  };
3953  const auto ChildIndexIsLessThanTheOtherChildIndex =
3954      [](const nsINode& aParent, const nsIContent* aChild1,
3955         const nsIContent* aChild2) {
3956        const uint32_t child1Index =
3957            aChild1 ? aParent.ComputeIndexOf<aKind>(aChild1).valueOr(
3958                          aParent.GetChildCount<aKind>())
3959                    : aParent.GetChildCount<aKind>();
3960        const uint32_t child2Index =
3961            aChild2 ? aParent.ComputeIndexOf<aKind>(aChild2).valueOr(
3962                          aParent.GetChildCount<aKind>())
3963                    : aParent.GetChildCount<aKind>();
3964        return child1Index < child2Index;
3965      };
3966  NS_WARNING_ASSERTION(do { if (!(NodeIsNullOrValidChild(aParent, aChild1))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}: aChild1 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild1), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3970); }
 } while (false)
3967      NodeIsNullOrValidChild(aParent, aChild1),do { if (!(NodeIsNullOrValidChild(aParent, aChild1))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}: aChild1 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild1), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3970); }
 } while (false)
3968      fmt::format("aKind={}: aChild1 is not a child of aParent:\n{}\nin:\n{}",do { if (!(NodeIsNullOrValidChild(aParent, aChild1))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}: aChild1 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild1), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3970); }
 } while (false)
3969                  aKind, ToString(*aChild1), ToString(aParent))do { if (!(NodeIsNullOrValidChild(aParent, aChild1))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}: aChild1 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild1), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3970); }
 } while (false)
3970          .c_str())do { if (!(NodeIsNullOrValidChild(aParent, aChild1))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}: aChild1 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild1), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3970); }
 } while (false);
3971  NS_WARNING_ASSERTION(do { if (!(NodeIsNullOrValidChild(aParent, aChild2))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}:aChild2 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild2), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3975); }
 } while (false)
3972      NodeIsNullOrValidChild(aParent, aChild2),do { if (!(NodeIsNullOrValidChild(aParent, aChild2))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}:aChild2 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild2), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3975); }
 } while (false)
3973      fmt::format("aKind={}:aChild2 is not a child of aParent:\n{}\nin:\n{}",do { if (!(NodeIsNullOrValidChild(aParent, aChild2))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}:aChild2 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild2), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3975); }
 } while (false)
3974                  aKind, ToString(*aChild2), ToString(aParent))do { if (!(NodeIsNullOrValidChild(aParent, aChild2))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}:aChild2 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild2), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3975); }
 } while (false)
3975          .c_str())do { if (!(NodeIsNullOrValidChild(aParent, aChild2))) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("aKind={}:aChild2 is not a child of aParent:\n{}\nin:\n{}"
, aKind, ToString(*aChild2), ToString(aParent)) .c_str(), "NodeIsNullOrValidChild(aParent, aChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3975); }
 } while (false);
3976  MOZ_ASSERT_IF(!*comp, aChild1 == aChild2)do { if (!*comp) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(aChild1 == aChild2)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aChild1 == aChild2))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aChild1 == aChild2"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3976); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aChild1 == aChild2" ")"); do { MOZ_CrashSequence
(__null, 3976); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false); } } while (false);
3977  const DebugOnly<bool> eitherIsNAC =
3978      (aChild1 && aChild1->IsRootOfNativeAnonymousSubtree()) ||
3979      (aChild2 && aChild2->IsRootOfNativeAnonymousSubtree());
3980  const DebugOnly<bool> eitherIsNotPartOfTree =
3981      ShouldHandleAssignedNodesOnSlot<aKind>() &&
3982      ((aParent.GetShadowRoot<aKind>() &&
3983        ((aChild1 && aChild1->GetParentNode() == &aParent) ||
3984         (aChild2 && aChild2->GetParentNode() == &aParent))) ||
3985       ((aParent.GetAsHTMLSlotElementIfFilled<aKind>() &&
3986         ((aChild1 && !aChild1->GetAssignedSlot<aKind>()) ||
3987          (aChild2 && !aChild2->GetAssignedSlot<aKind>())))));
3988  MOZ_ASSERT_IF(!eitherIsNAC && !*comp,do { if (!eitherIsNAC && !*comp) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(ChildrenHaveSameIndex
(aChild1, aChild2))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(ChildrenHaveSameIndex(aChild1
, aChild2)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("ChildrenHaveSameIndex(aChild1, aChild2)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3989); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ChildrenHaveSameIndex(aChild1, aChild2)"
 ")"); do { MOZ_CrashSequence(__null, 3989); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3989                ChildrenHaveSameIndex(aChild1, aChild2))do { if (!eitherIsNAC && !*comp) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(ChildrenHaveSameIndex
(aChild1, aChild2))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(ChildrenHaveSameIndex(aChild1
, aChild2)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("ChildrenHaveSameIndex(aChild1, aChild2)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 3989); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ChildrenHaveSameIndex(aChild1, aChild2)"
 ")"); do { MOZ_CrashSequence(__null, 3989); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3990  MOZ_ASSERT_IF(do { if (!eitherIsNAC && !eitherIsNotPartOfTree &&
 *comp < 0) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1
, aChild2))>::isValid, "invalid assertion condition"); if (
(__builtin_expect(!!(!(!!(ChildIndexIsLessThanTheOtherChildIndex
(aParent, aChild1, aChild2)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1, aChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3992); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1, aChild2)"
 ")"); do { MOZ_CrashSequence(__null, 3992); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3991      !eitherIsNAC && !eitherIsNotPartOfTree && *comp < 0,do { if (!eitherIsNAC && !eitherIsNotPartOfTree &&
 *comp < 0) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1
, aChild2))>::isValid, "invalid assertion condition"); if (
(__builtin_expect(!!(!(!!(ChildIndexIsLessThanTheOtherChildIndex
(aParent, aChild1, aChild2)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1, aChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3992); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1, aChild2)"
 ")"); do { MOZ_CrashSequence(__null, 3992); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3992      ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1, aChild2))do { if (!eitherIsNAC && !eitherIsNotPartOfTree &&
 *comp < 0) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1
, aChild2))>::isValid, "invalid assertion condition"); if (
(__builtin_expect(!!(!(!!(ChildIndexIsLessThanTheOtherChildIndex
(aParent, aChild1, aChild2)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1, aChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3992); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild1, aChild2)"
 ")"); do { MOZ_CrashSequence(__null, 3992); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3993  MOZ_ASSERT_IF(do { if (!eitherIsNAC && !eitherIsNotPartOfTree &&
 *comp > 0) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2
, aChild1))>::isValid, "invalid assertion condition"); if (
(__builtin_expect(!!(!(!!(ChildIndexIsLessThanTheOtherChildIndex
(aParent, aChild2, aChild1)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2, aChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3995); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2, aChild1)"
 ")"); do { MOZ_CrashSequence(__null, 3995); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3994      !eitherIsNAC && !eitherIsNotPartOfTree && *comp > 0,do { if (!eitherIsNAC && !eitherIsNotPartOfTree &&
 *comp > 0) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2
, aChild1))>::isValid, "invalid assertion condition"); if (
(__builtin_expect(!!(!(!!(ChildIndexIsLessThanTheOtherChildIndex
(aParent, aChild2, aChild1)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2, aChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3995); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2, aChild1)"
 ")"); do { MOZ_CrashSequence(__null, 3995); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
3995      ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2, aChild1))do { if (!eitherIsNAC && !eitherIsNotPartOfTree &&
 *comp > 0) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2
, aChild1))>::isValid, "invalid assertion condition"); if (
(__builtin_expect(!!(!(!!(ChildIndexIsLessThanTheOtherChildIndex
(aParent, aChild2, aChild1)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2, aChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 3995); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "ChildIndexIsLessThanTheOtherChildIndex(aParent, aChild2, aChild1)"
 ")"); do { MOZ_CrashSequence(__null, 3995); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
3996#endif  // #ifdef DEBUG
3997  return comp;
3998}
3999 
4000/* static */
4001template <TreeKind aKind, typename Dummy>
4002Maybe<int32_t> nsContentUtils::CompareChildOffsetAndChildNode(
4003    const nsINode& aParent, uint32_t aOffset1, const nsIContent& aChild2,
4004    NodeIndexCache* aIndexCache /* = nullptr */) {
4005  MOZ_ASSERT_IF(aKind != TreeKind::DOM,do { if (aKind != TreeKind::DOM) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(&aChild2) == &aParent)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(GetParentNodeForComparison<aKind>::Get(&aChild2)
 == &aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<aKind>::Get(&aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4006); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(&aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 4006); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4006                GetParentNodeForComparison<aKind>::Get(&aChild2) == &aParent)do { if (aKind != TreeKind::DOM) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<aKind>::Get(&aChild2) == &aParent)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(GetParentNodeForComparison<aKind>::Get(&aChild2)
 == &aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<aKind>::Get(&aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4006); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(&aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 4006); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4007  // See the explanation of TreeKindToCompareChildren. aParent may be computed
4008  // with TreeKind::ShadowIncludingDOM if aKind is TreeKind::DOM.
4009  MOZ_ASSERT_IF(do { if (aKind == TreeKind::DOM) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(&aChild2) == &aParent || GetParentNodeForComparison<
TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4013); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 4013); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4010      aKind == TreeKind::DOM,do { if (aKind == TreeKind::DOM) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(&aChild2) == &aParent || GetParentNodeForComparison<
TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4013); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 4013); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4011      GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent ||do { if (aKind == TreeKind::DOM) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(&aChild2) == &aParent || GetParentNodeForComparison<
TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4013); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 4013); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4012          GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get(do { if (aKind == TreeKind::DOM) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(&aChild2) == &aParent || GetParentNodeForComparison<
TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4013); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 4013); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4013              &aChild2) == &aParent)do { if (aKind == TreeKind::DOM) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(GetParentNodeForComparison
<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison
<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(GetParentNodeForComparison<TreeKind::DOM>::Get
(&aChild2) == &aParent || GetParentNodeForComparison<
TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &
aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4013); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<TreeKind::DOM>::Get(&aChild2) == &aParent || GetParentNodeForComparison<TreeKind::ShadowIncludingDOM>::Get( &aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 4013); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4014 
4015  if (NS_WARN_IF(aChild2.IsDocumentFragment())NS_warn_if_impl(aChild2.IsDocumentFragment(), "aChild2.IsDocumentFragment()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4015)) {
4016    return Nothing();
4017  }
4018  // Native anonymous content (e.g. ::before/::after) is not in the regular
4019  // child list, so order it against the [parentNode, aOffset1] boundary using
4020  // the flat-tree index space from GetIndexInParent. aOffset1 indexes regular
4021  // children [0, N); the NAC child sits at child2Index in the same space, and
4022  // the boundary precedes it iff aOffset1 <= child2Index.
4023  if (MOZ_UNLIKELY(aChild2.IsRootOfNativeAnonymousSubtree())(__builtin_expect(!!(aChild2.IsRootOfNativeAnonymousSubtree()
), 0))) {
4024    const Maybe<int32_t> child2Index =
4025        aIndexCache ? aIndexCache->ComputeIndexOf<aKind>(&aParent, &aChild2)
4026                    : GetIndexInParent<aKind>(&aParent, &aChild2);
4027    if (NS_WARN_IF(child2Index.isNothing())NS_warn_if_impl(child2Index.isNothing(), "child2Index.isNothing()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4027)) {
4028      // XXX Keep the odd traditional behavior for now.
4029      return Some(1);
4030    }
4031    return Some(int32_t(aOffset1) <= *child2Index ? -1 : 1);
4032  }
4033 
4034  MOZ_ASSERT(GetParentNodeForComparison<aKind>::Get(&aChild2) == &aParent)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get(&aChild2
) == &aParent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get(&aChild2) == &aParent))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get(&aChild2) == &aParent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4034); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get(&aChild2) == &aParent"
 ")"); do { MOZ_CrashSequence(__null, 4034); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4035 
4036  const uint32_t parentNodeChildCount = aParent.GetChildCount<aKind>();
4037  if (NS_WARN_IF(aOffset1 > parentNodeChildCount)NS_warn_if_impl(aOffset1 > parentNodeChildCount, "aOffset1 > parentNodeChildCount"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4037)) {
4038    // If the root caller's boundary points after end of aParent, let's treat
4039    // it's after the fallback content for now... If you find a bug and you know
4040    // better result in this case, feel free to change.
4041    return Some(1);
4042  }
4043 
4044  if constexpr (aKind == TreeKind::FlatForSelection) {
4045    // If we're handling flattened tree for selection, aChild2 may be a fallback
4046    // content of a <slot> which has some assigned nodes or an unassigned child
4047    // node of a shadow host. Then, aChild2 is not part of the flattened tree,
4048    // but it is also valid for range boundaries. Therefore, we need to handle
4049    // the case here.
4050    if (aChild2.GetParentNode() == &aParent &&
4051        (aParent.GetAsHTMLSlotElementIfFilledForSelection() ||
4052         aParent.GetShadowRootForSelection())) {
4053      // Treat the fallback content and the unassigned node is after the last
4054      // assigned node or the shadow.
4055      // XXX I'm not sure whether we should treat the end of aParent and a
4056      // fallback content node are the same position or not. For now, we treat
4057      // them as the same, but if you find a bug and you know better result in
4058      // this case, feel free to change here.
4059      return aOffset1 == parentNodeChildCount ? Some(0) : Some(-1);
4060    }
4061  }
4062 
4063  if (aOffset1 == parentNodeChildCount) {
4064    return Some(1);  // Comparing with after the last child and a child.
4065  }
4066 
4067  MOZ_ASSERT(aParent.GetFirstChild<aKind>())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aParent.GetFirstChild<aKind>())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aParent.GetFirstChild<aKind
>()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aParent.GetFirstChild<aKind>()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4067); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent.GetFirstChild<aKind>()"
 ")"); do { MOZ_CrashSequence(__null, 4067); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4068  const nsIContent& firstChild = *aParent.GetFirstChild<aKind>();
4069  if (&aChild2 == &firstChild) {
4070    return Some(!aOffset1 ? 0 : 1);
4071  }
4072 
4073  MOZ_ASSERT(aParent.GetLastChild<aKind>())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aParent.GetLastChild<aKind>())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aParent.GetLastChild<aKind
>()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aParent.GetLastChild<aKind>()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4073); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent.GetLastChild<aKind>()"
 ")"); do { MOZ_CrashSequence(__null, 4073); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4074  const nsIContent& lastChild = *aParent.GetLastChild<aKind>();
4075  NS_WARNING_ASSERTION(do { if (!(&firstChild != &lastChild)) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("The should be 2 or more children:\nchild={}\naChild2={}\n"
, ToString(firstChild), ToString(aChild2)) .c_str(), "&firstChild != &lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4079); }
 } while (false)
4076      &firstChild != &lastChild,do { if (!(&firstChild != &lastChild)) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("The should be 2 or more children:\nchild={}\naChild2={}\n"
, ToString(firstChild), ToString(aChild2)) .c_str(), "&firstChild != &lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4079); }
 } while (false)
4077      fmt::format("The should be 2 or more children:\nchild={}\naChild2={}\n",do { if (!(&firstChild != &lastChild)) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("The should be 2 or more children:\nchild={}\naChild2={}\n"
, ToString(firstChild), ToString(aChild2)) .c_str(), "&firstChild != &lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4079); }
 } while (false)
4078                  ToString(firstChild), ToString(aChild2))do { if (!(&firstChild != &lastChild)) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("The should be 2 or more children:\nchild={}\naChild2={}\n"
, ToString(firstChild), ToString(aChild2)) .c_str(), "&firstChild != &lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4079); }
 } while (false)
4079          .c_str())do { if (!(&firstChild != &lastChild)) { NS_DebugBreak
(NS_DEBUG_WARNING, fmt::format("The should be 2 or more children:\nchild={}\naChild2={}\n"
, ToString(firstChild), ToString(aChild2)) .c_str(), "&firstChild != &lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4079); }
 } while (false);
4080  MOZ_ASSERT(&firstChild != &lastChild)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(&firstChild != &lastChild)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(&firstChild != &lastChild
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"&firstChild != &lastChild", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4080); AnnotateMozCrashReason("MOZ_ASSERT" "(" "&firstChild != &lastChild"
 ")"); do { MOZ_CrashSequence(__null, 4080); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4081  if (&aChild2 == &lastChild) {
4082    return Some(aOffset1 == parentNodeChildCount - 1 ? 0 : -1);
4083  }
4084  Maybe<uint32_t> child2Index;
4085  if (aIndexCache) {
4086    const Maybe<int32_t> maybeGenContentChild2Index =
4087        aIndexCache->ComputeIndexOf<aKind>(&aParent, &aChild2);
4088    if (maybeGenContentChild2Index && *maybeGenContentChild2Index >= 0) {
4089      child2Index.emplace(static_cast<uint32_t>(*maybeGenContentChild2Index));
4090    }
4091#ifdef DEBUG1
4092    const Maybe<uint32_t> child2IndexDebug =
4093        aParent.ComputeIndexOf<aKind>(&aChild2);
4094    NS_WARNING_ASSERTION(do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(aChild2)) .c_str()
, "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4100); } } while (false)
4095        child2Index == child2IndexDebug,do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(aChild2)) .c_str()
, "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4100); } } while (false)
4096        fmt::format("aIndexCache causes wrong index: expected {}, but got "do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(aChild2)) .c_str()
, "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4100); } } while (false)
4097                    "{}\naParent={}\naChild1={}\n",do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(aChild2)) .c_str()
, "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4100); } } while (false)
4098                    ToString(child2IndexDebug), ToString(child2Index),do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(aChild2)) .c_str()
, "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4100); } } while (false)
4099                    ToString(aParent), ToString(aChild2))do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(aChild2)) .c_str()
, "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4100); } } while (false)
4100            .c_str())do { if (!(child2Index == child2IndexDebug)) { NS_DebugBreak(
NS_DEBUG_WARNING, fmt::format("aIndexCache causes wrong index: expected {}, but got "
 "{}\naParent={}\naChild1={}\n", ToString(child2IndexDebug), ToString
(child2Index), ToString(aParent), ToString(aChild2)) .c_str()
, "child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4100); } } while (false);
4101    MOZ_ASSERT(child2Index == child2IndexDebug)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(child2Index == child2IndexDebug)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(child2Index == child2IndexDebug
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"child2Index == child2IndexDebug", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4101); AnnotateMozCrashReason("MOZ_ASSERT" "(" "child2Index == child2IndexDebug"
 ")"); do { MOZ_CrashSequence(__null, 4101); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4102#endif  // #ifdef DEBUG
4103  } else {
4104    child2Index = aParent.ComputeIndexOf<aKind>(&aChild2);
4105  }
4106  if (NS_WARN_IF(child2Index.isNothing())NS_warn_if_impl(child2Index.isNothing(), "child2Index.isNothing()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4106)) {
4107    return Some(1);
4108  }
4109  return Some(aOffset1 == *child2Index ? 0
4110                                       : (aOffset1 < *child2Index ? -1 : 1));
4111}
4112 
4113/* static */
4114template <TreeKind aKind, typename Dummy>
4115Maybe<int32_t> nsContentUtils::CompareChildNodeAndChildOffset(
4116    const nsINode& aParent, const nsIContent& aChild1, uint32_t aOffset2,
4117    NodeIndexCache* aIndexCache /* = nullptr */) {
4118  const Maybe<int32_t> comp = CompareChildOffsetAndChildNode<aKind>(
4119      aParent, aOffset2, aChild1, aIndexCache);
4120  if (comp.isNothing()) {
4121    return comp;
4122  }
4123  return Some(*comp * -1);
4124}
4125 
4126/* static */
4127template <TreeKind aKind>
4128Maybe<int32_t> nsContentUtils::ComparePointsWithIndices(
4129    const nsINode* aParent1, uint32_t aOffset1, const nsINode* aParent2,
4130    uint32_t aOffset2, NodeIndexCache* aIndexCache) {
4131  MOZ_ASSERT(aParent1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aParent1)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aParent1))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aParent1", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4131); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent1" ")"
); do { MOZ_CrashSequence(__null, 4131); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4132  MOZ_ASSERT(aParent2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aParent2)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aParent2))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aParent2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4132); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent2" ")"
); do { MOZ_CrashSequence(__null, 4132); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4133 
4134  if (aParent1 == aParent2) {
4135    return Some(aOffset1 < aOffset2 ? -1 : (aOffset1 > aOffset2 ? 1 : 0));
4136  }
4137 
4138  const CommonAncestors<GetParentNodeForComparison<aKind>> commonAncestors(
4139      *aParent1, *aParent2);
4140  const nsINode* const closestCommonAncestor =
4141      commonAncestors.GetClosestCommonAncestor();
4142  if (MOZ_UNLIKELY(!closestCommonAncestor)(__builtin_expect(!!(!closestCommonAncestor), 0))) {
4143    return Nothing();
4144  }
4145 
4146  const nsIContent* closestCommonAncestorChild1 = nsIContent::FromNodeOrNull(
4147      commonAncestors.GetClosestCommonAncestorChild1());
4148  const nsIContent* closestCommonAncestorChild2 = nsIContent::FromNodeOrNull(
4149      commonAncestors.GetClosestCommonAncestorChild2());
4150  MOZ_ASSERT(closestCommonAncestorChild1 != closestCommonAncestorChild2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(closestCommonAncestorChild1 != closestCommonAncestorChild2
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(closestCommonAncestorChild1 != closestCommonAncestorChild2
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"closestCommonAncestorChild1 != closestCommonAncestorChild2",
 "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4150); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1 != closestCommonAncestorChild2"
 ")"); do { MOZ_CrashSequence(__null, 4150); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4151  MOZ_ASSERT_IF(!closestCommonAncestorChild1,do { if (!closestCommonAncestorChild1) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(!commonAncestors
.GetClosestCommonAncestorChild1())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!commonAncestors.GetClosestCommonAncestorChild1
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!commonAncestors.GetClosestCommonAncestorChild1()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4152); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!commonAncestors.GetClosestCommonAncestorChild1()"
 ")"); do { MOZ_CrashSequence(__null, 4152); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4152                !commonAncestors.GetClosestCommonAncestorChild1())do { if (!closestCommonAncestorChild1) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(!commonAncestors
.GetClosestCommonAncestorChild1())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!commonAncestors.GetClosestCommonAncestorChild1
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!commonAncestors.GetClosestCommonAncestorChild1()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4152); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!commonAncestors.GetClosestCommonAncestorChild1()"
 ")"); do { MOZ_CrashSequence(__null, 4152); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4153  MOZ_ASSERT_IF(!closestCommonAncestorChild2,do { if (!closestCommonAncestorChild2) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(!commonAncestors
.GetClosestCommonAncestorChild2())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!commonAncestors.GetClosestCommonAncestorChild2
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!commonAncestors.GetClosestCommonAncestorChild2()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4154); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!commonAncestors.GetClosestCommonAncestorChild2()"
 ")"); do { MOZ_CrashSequence(__null, 4154); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4154                !commonAncestors.GetClosestCommonAncestorChild2())do { if (!closestCommonAncestorChild2) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(!commonAncestors
.GetClosestCommonAncestorChild2())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!commonAncestors.GetClosestCommonAncestorChild2
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!commonAncestors.GetClosestCommonAncestorChild2()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4154); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!commonAncestors.GetClosestCommonAncestorChild2()"
 ")"); do { MOZ_CrashSequence(__null, 4154); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4155  commonAncestors
4156      .template WarnIfClosestCommonAncestorChildrenAreNotInChildList<aKind>();
4157  if (closestCommonAncestorChild1 && closestCommonAncestorChild2) {
4158    return CompareClosestCommonAncestorChildren<
4159        TreeKindToCompareChildren<aKind>()>(
4160        *closestCommonAncestor, closestCommonAncestorChild1,
4161        closestCommonAncestorChild2, aIndexCache);
4162  }
4163 
4164  if (closestCommonAncestorChild2) {
4165    // aParent1 is the common ancestor.
4166    MOZ_ASSERT(GetParentNodeForComparison<aKind>::Get(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2
) == aParent1)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<aKind
>::Get( closestCommonAncestorChild2) == aParent1))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2) == aParent1"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4167); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2) == aParent1"
 ")"); do { MOZ_CrashSequence(__null, 4167); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
4167                   closestCommonAncestorChild2) == aParent1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2
) == aParent1)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<aKind
>::Get( closestCommonAncestorChild2) == aParent1))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2) == aParent1"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4167); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2) == aParent1"
 ")"); do { MOZ_CrashSequence(__null, 4167); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4168    if (aKind != TreeKind::DOM && ChildNodeIsInShadowDOMHostedByParent<aKind>(
4169                                      aParent1, closestCommonAncestorChild2)) {
4170      // Comparing a shadow host with its shadow root.
4171      // We consider:
4172      // [aParent1, 0] < closestCommonAncestorChild2 < [aParent1, 1]
4173      return aOffset1 > 0 ? Some(1) : Some(-1);
4174    }
4175 
4176    // FIXME: bug 1946003 and bug 1946008.
4177    if (MOZ_UNLIKELY(closestCommonAncestorChild2->IsDocumentFragment())(__builtin_expect(!!(closestCommonAncestorChild2->IsDocumentFragment
()), 0))) {
4178      // XXX Keep the odd traditional behavior for now.
4179      return Some(1);
4180    }
4181    // If the common ancestor is a shadow host, closestCommonAncestorChild2 must
4182    // be a child node of the host and we shouldn't handle the flattened tree.
4183    // Therefore, we can compare closestCommonAncestorChild2 and the child at
4184    // aBoundary1 can be compared within TreeKind::DOM tree.
4185    // NOTE: When aKind is TreeKind::FlatForSelection,
4186    // GetParentNodeForComparison returns the shadow host as the parent node
4187    // of a child node even if it's not assigned to any <slot>. Therefore, even
4188    // when we should return Nothing, we may return Some value for now.
4189    // Therefore, we need to relax this assertion for TreeKind::FlatForSelection
4190    // until fixing bug 2014622. And it's okay to compare the child nodes not a
4191    // part of flattened tree as in the DOM since anyway we return wrong value.
4192    MOZ_ASSERT_IF(do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild2
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild2->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4195); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4195); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4193        aKind != TreeKind::FlatForSelection &&do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild2
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild2->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4195); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4195); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4194            closestCommonAncestor->GetShadowRoot<aKind>(),do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild2
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild2->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4195); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4195); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4195        closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor)do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild2
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild2->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4195); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4195); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4196    const Maybe<int32_t> comp = nsContentUtils::CompareChildOffsetAndChildNode<
4197        TreeKindToCompareChildren<aKind>()>(*closestCommonAncestor, aOffset1,
4198                                            *closestCommonAncestorChild2,
4199                                            aIndexCache);
4200    if (NS_WARN_IF(comp.isNothing())NS_warn_if_impl(comp.isNothing(), "comp.isNothing()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4200)) {
4201      NS_ASSERTION(do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildOffsetAndChildNode() must return Some "
 "here. It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4204); MOZ_PretendNoReturn
(); } } while (0)
4202          comp.isSome(),do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildOffsetAndChildNode() must return Some "
 "here. It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4204); MOZ_PretendNoReturn
(); } } while (0)
4203          "nsContentUtils::CompareChildOffsetAndChildNode() must return Some "do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildOffsetAndChildNode() must return Some "
 "here. It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4204); MOZ_PretendNoReturn
(); } } while (0)
4204          "here. It should've already checked before we call it.")do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildOffsetAndChildNode() must return Some "
 "here. It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4204); MOZ_PretendNoReturn
(); } } while (0);
4205      // XXX Keep the odd traditional behavior for now.
4206      return Some(1);
4207    }
4208    // If the child of the closest common ancestor is at aOffset1 of aParent1,
4209    // it means that aOffset2 of aParent2 refers a descendant of the child.
4210    // So, aOffset2 of aParent2 refers a descendant of aOffset1 of aParent1.
4211    if (!*comp) {
4212      return Some(-1);
4213    }
4214    return comp;
4215  }
4216 
4217  // aParent2 is the common ancestor.
4218  MOZ_ASSERT(closestCommonAncestorChild1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(closestCommonAncestorChild1)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1)
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4218); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1" ")"); do { MOZ_CrashSequence
(__null, 4218); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
4219  MOZ_ASSERT(GetParentNodeForComparison<aKind>::Get(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1
) == aParent2)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<aKind
>::Get( closestCommonAncestorChild1) == aParent2))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1) == aParent2"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4220); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1) == aParent2"
 ")"); do { MOZ_CrashSequence(__null, 4220); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
4220                 closestCommonAncestorChild1) == aParent2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1
) == aParent2)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<aKind
>::Get( closestCommonAncestorChild1) == aParent2))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1) == aParent2"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4220); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1) == aParent2"
 ")"); do { MOZ_CrashSequence(__null, 4220); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4221  if (aKind != TreeKind::DOM && ChildNodeIsInShadowDOMHostedByParent<aKind>(
4222                                    aParent2, closestCommonAncestorChild1)) {
4223    // Comparing a shadow host with its shadow root.
4224    // We consider: [aParent2, 0] < closestCommonAncestorChild1 < [aParent2, 1]
4225    return aOffset2 > 0 ? Some(-1) : Some(1);
4226  }
4227 
4228  // FIXME: bug 1946003 and bug 1946008.
4229  if (MOZ_UNLIKELY(closestCommonAncestorChild1->IsDocumentFragment())(__builtin_expect(!!(closestCommonAncestorChild1->IsDocumentFragment
()), 0))) {
4230    // XXX Keep the odd traditional behavior for now.
4231    return Some(-1);
4232  }
4233  // If the common ancestor is a shadow host, closestCommonAncestorChild1 must
4234  // be a child node of the host and we shouldn't handle the flattened tree.
4235  // Therefore, we can compare closestCommonAncestorChild1 and the child at
4236  // aBoundary2 can be compared within TreeKind::DOM tree.
4237  // NOTE: When aKind is TreeKind::FlatForSelection,
4238  // GetParentNodeForComparison returns the shadow host as the parent node
4239  // of a child node even if it's not assigned to any <slot>. Therefore, even
4240  // when we should return Nothing, we may return Some value for now.
4241  // Therefore, we need to relax this assertion for TreeKind::FlatForSelection
4242  // until fixing bug 2014622. And it's okay to compare the child nodes not a
4243  // part of flattened tree as in the DOM since anyway we return wrong value.
4244  MOZ_ASSERT_IF(do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild1
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4247); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4247); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4245      aKind != TreeKind::FlatForSelection &&do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild1
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4247); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4247); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4246          closestCommonAncestor->GetShadowRoot<aKind>(),do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild1
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4247); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4247); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4247      closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor)do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild1
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4247); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4247); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4248  const Maybe<int32_t> comp = nsContentUtils::CompareChildNodeAndChildOffset<
4249      TreeKindToCompareChildren<aKind>()>(*closestCommonAncestor,
4250                                          *closestCommonAncestorChild1,
4251                                          aOffset2, aIndexCache);
4252  if (NS_WARN_IF(comp.isNothing())NS_warn_if_impl(comp.isNothing(), "comp.isNothing()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4252)) {
4253    NS_ASSERTION(comp.isSome(),do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodeAndChildOffset() must return "
 "Some here. It should've already checked before we call it."
, "comp.isSome()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4255); MOZ_PretendNoReturn(); } } while (0)
4254                 "nsContentUtils::CompareChildNodeAndChildOffset() must return "do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodeAndChildOffset() must return "
 "Some here. It should've already checked before we call it."
, "comp.isSome()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4255); MOZ_PretendNoReturn(); } } while (0)
4255                 "Some here. It should've already checked before we call it.")do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodeAndChildOffset() must return "
 "Some here. It should've already checked before we call it."
, "comp.isSome()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4255); MOZ_PretendNoReturn(); } } while (0);
4256    // XXX Keep the odd traditional behavior for now.
4257    return Some(-1);
4258  }
4259  // If the child of the closet common ancestor is at aOffset2 of aParent2, it
4260  // means that aOffset1 of aParent1 refers a descendant of the child.
4261  // So, aOffset1 of aParent1 refers a descendant of aOffset2 of aParent2.
4262  if (!*comp) {
4263    return Some(1);
4264  }
4265  return comp;
4266}
4267 
4268/* static */
4269BrowserParent* nsContentUtils::GetCommonBrowserParentAncestor(
4270    BrowserParent* aBrowserParent1, BrowserParent* aBrowserParent2) {
4271  MOZ_ASSERT(aBrowserParent1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aBrowserParent1)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aBrowserParent1))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("aBrowserParent1"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4271); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aBrowserParent1" ")"); do { MOZ_CrashSequence
(__null, 4271); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
4272  MOZ_ASSERT(aBrowserParent2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aBrowserParent2)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aBrowserParent2))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("aBrowserParent2"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4272); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aBrowserParent2" ")"); do { MOZ_CrashSequence
(__null, 4272); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
4273  return CommonAncestors<GetParentBrowserParent>(*aBrowserParent1,
4274                                                 *aBrowserParent2)
4275      .GetClosestCommonAncestor();
4276}
4277 
4278/* static */
4279Element* nsContentUtils::GetTargetElement(Document* aDocument,
4280                                          const nsAString& aAnchorName) {
4281  MOZ_ASSERT(aDocument)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aDocument)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aDocument))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aDocument", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4281); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aDocument" ")"
); do { MOZ_CrashSequence(__null, 4281); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4282 
4283  if (aAnchorName.IsEmpty()) {
4284    return nullptr;
4285  }
4286  // 1. If there is an element in the document tree that has an ID equal to
4287  //    fragment, then return the first such element in tree order.
4288  if (Element* el = aDocument->GetElementById(aAnchorName)) {
4289    return el;
4290  }
4291 
4292  // 2. If there is an a element in the document tree that has a name
4293  // attribute whose value is equal to fragment, then return the first such
4294  // element in tree order.
4295  //
4296  // FIXME(emilio): Why the different code-paths for HTML and non-HTML docs?
4297  if (aDocument->IsHTMLDocument()) {
4298    RefPtr<NodeList> list = aDocument->GetElementsByName(aAnchorName);
4299    // Loop through the named nodes looking for the first anchor
4300    uint32_t length = list->Length();
4301    for (uint32_t i = 0; i < length; i++) {
4302      nsIContent* node = list->Item(i);
4303      if (node->IsHTMLElement(nsGkAtoms::a)) {
4304        return node->AsElement();
4305      }
4306    }
4307  } else {
4308    constexpr auto nameSpace = u"http://www.w3.org/1999/xhtml"_ns;
4309    // Get the list of anchor elements
4310    RefPtr<NodeList> list =
4311        aDocument->GetElementsByTagNameNS(nameSpace, u"a"_ns);
4312    // Loop through the anchors looking for the first one with the given name.
4313    for (uint32_t i = 0; true; i++) {
4314      nsIContent* node = list->Item(i);
4315      if (!node) {  // End of list
4316        break;
4317      }
4318 
4319      // Compare the name attribute
4320      if (node->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
4321                                         aAnchorName, eCaseMatters)) {
4322        return node->AsElement();
4323      }
4324    }
4325  }
4326 
4327  // 3. Return null.
4328  return nullptr;
4329}
4330 
4331/* static */
4332template <TreeKind aKind, typename PT1, typename RT1, typename PT2,
4333          typename RT2>
4334Maybe<int32_t> nsContentUtils::ComparePoints(
4335    const RangeBoundaryBase<PT1, RT1>& aBoundary1,
4336    const RangeBoundaryBase<PT2, RT2>& aBoundary2,
4337    NodeIndexCache* aIndexCache /* = nullptr */) {
4338  if (!aBoundary1.IsSet() || !aBoundary2.IsSet()) {
4339    return Nothing{};
4340  }
4341  MOZ_ASSERT(aBoundary1.GetTreeKind() == aBoundary2.GetTreeKind())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aBoundary1.GetTreeKind() == aBoundary2.GetTreeKind()
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aBoundary1.GetTreeKind() == aBoundary2.GetTreeKind()
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aBoundary1.GetTreeKind() == aBoundary2.GetTreeKind()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4341); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aBoundary1.GetTreeKind() == aBoundary2.GetTreeKind()"
 ")"); do { MOZ_CrashSequence(__null, 4341); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4342 
4343  const auto kValidOrInvalidOffsets1 =
4344      RangeBoundaryBase<PT1, RT1>::OffsetFilter::kValidOrInvalidOffsets;
4345  const auto kValidOrInvalidOffsets2 =
4346      RangeBoundaryBase<PT2, RT2>::OffsetFilter::kValidOrInvalidOffsets;
4347 
4348  // RangeBoundaryBase instances may be initialized only with a child node or an
4349  // offset in the container.  If both instances have computed offset, we can
4350  // use ComparePointsWithIndices() which works with offsets.
4351  if (aBoundary1.HasOffset() && aBoundary2.HasOffset()) {
4352    return ComparePointsWithIndices<aKind>(
4353        aBoundary1.GetContainer(), *aBoundary1.Offset(kValidOrInvalidOffsets1),
4354        aBoundary2.GetContainer(), *aBoundary2.Offset(kValidOrInvalidOffsets2),
4355        aIndexCache);
4356  }
4357 
4358  // Otherwise, i.e., at least one RangeBoundaryBase stores the child node.
4359  // In the most cases, RangeBoundaryBase has it, so, the worst scenario here
4360  // is, one of the boundaries comes from a StaticRange or is initialized with
4361  // offset and RangeBoundarySetBy::Offset.  However, for making it faster in
4362  // the most cases, we should compare the child nodes without offsets if
4363  // possible.
4364 
4365  // If we're comparing children in the same container, we don't need to compute
4366  // common ancestors.  So, we can skip it and just compare the children.
4367  if (aBoundary1.GetContainer() == aBoundary2.GetContainer()) {
4368    const nsIContent* const child1 = aBoundary1.GetChildAtOffset();
4369    MOZ_ASSERT_IF(child1, !child1->IsShadowRoot())do { if (child1) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(!child1->IsShadowRoot())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!child1->IsShadowRoot()))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!child1->IsShadowRoot()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4369); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!child1->IsShadowRoot()" ")"); do { MOZ_CrashSequence
(__null, 4369); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false); } } while (false);
4370    const nsIContent* const child2 = aBoundary2.GetChildAtOffset();
4371    MOZ_ASSERT_IF(child2, !child2->IsShadowRoot())do { if (child2) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(!child2->IsShadowRoot())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!child2->IsShadowRoot()))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!child2->IsShadowRoot()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4371); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!child2->IsShadowRoot()" ")"); do { MOZ_CrashSequence
(__null, 4371); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false); } } while (false);
4372    // But aBoundary1 and aBoundary2 may be not updated for the latest DOM.
4373    // In such case, we need to return Nothing.
4374    if (NS_WARN_IF(child1 && GetParentNodeForComparison<aKind>::Get(child1) !=NS_warn_if_impl(child1 && GetParentNodeForComparison<
aKind>::Get(child1) != aBoundary1.GetContainer(), "child1 && GetParentNodeForComparison<aKind>::Get(child1) != aBoundary1.GetContainer()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4375)
4375                                 aBoundary1.GetContainer())NS_warn_if_impl(child1 && GetParentNodeForComparison<
aKind>::Get(child1) != aBoundary1.GetContainer(), "child1 && GetParentNodeForComparison<aKind>::Get(child1) != aBoundary1.GetContainer()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4375) ||
4376        NS_WARN_IF(child2 && GetParentNodeForComparison<aKind>::Get(child2) !=NS_warn_if_impl(child2 && GetParentNodeForComparison<
aKind>::Get(child2) != aBoundary2.GetContainer(), "child2 && GetParentNodeForComparison<aKind>::Get(child2) != aBoundary2.GetContainer()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4377)
4377                                 aBoundary2.GetContainer())NS_warn_if_impl(child2 && GetParentNodeForComparison<
aKind>::Get(child2) != aBoundary2.GetContainer(), "child2 && GetParentNodeForComparison<aKind>::Get(child2) != aBoundary2.GetContainer()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4377)) [[unlikely]] {
4378      return Nothing{};
4379    }
4380    return CompareClosestCommonAncestorChildren<
4381        TreeKindToCompareChildren<aKind>()>(*aBoundary1.GetContainer(), child1,
4382                                            child2, aIndexCache);
4383  }
4384 
4385  // Otherwise, we need to compare the common ancestor children which is the
4386  // most distant different inclusive ancestors of the containers.  So, the
4387  // following implementation is similar to ComparePointsWithIndices(), but we
4388  // don't have offset, so, we cannot use offset when we compare the boundaries
4389  // whose one is a descendant of the other.
4390  const CommonAncestors<GetParentNodeForComparison<aKind>> commonAncestors(
4391      *aBoundary1.GetContainer(), *aBoundary2.GetContainer());
4392 
4393  const nsINode* const closestCommonAncestor =
4394      commonAncestors.GetClosestCommonAncestor();
4395  if (MOZ_UNLIKELY(!closestCommonAncestor)(__builtin_expect(!!(!closestCommonAncestor), 0))) {
4396    return Nothing();
4397  }
4398  MOZ_ASSERT(commonAncestors.GetClosestCommonAncestor())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(commonAncestors.GetClosestCommonAncestor())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(commonAncestors.GetClosestCommonAncestor()))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("commonAncestors.GetClosestCommonAncestor()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4398); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "commonAncestors.GetClosestCommonAncestor()"
 ")"); do { MOZ_CrashSequence(__null, 4398); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4399 
4400  const nsIContent* closestCommonAncestorChild1 = nsIContent::FromNodeOrNull(
4401      commonAncestors.GetClosestCommonAncestorChild1());
4402  const nsIContent* closestCommonAncestorChild2 = nsIContent::FromNodeOrNull(
4403      commonAncestors.GetClosestCommonAncestorChild2());
4404  commonAncestors
4405      .template WarnIfClosestCommonAncestorChildrenAreNotInChildList<aKind>();
4406  MOZ_ASSERT(closestCommonAncestorChild1 != closestCommonAncestorChild2)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(closestCommonAncestorChild1 != closestCommonAncestorChild2
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(closestCommonAncestorChild1 != closestCommonAncestorChild2
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"closestCommonAncestorChild1 != closestCommonAncestorChild2",
 "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4406); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1 != closestCommonAncestorChild2"
 ")"); do { MOZ_CrashSequence(__null, 4406); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4407  MOZ_ASSERT_IF(!closestCommonAncestorChild1,do { if (!closestCommonAncestorChild1) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(!commonAncestors
.GetClosestCommonAncestorChild1())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!commonAncestors.GetClosestCommonAncestorChild1
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!commonAncestors.GetClosestCommonAncestorChild1()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4408); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!commonAncestors.GetClosestCommonAncestorChild1()"
 ")"); do { MOZ_CrashSequence(__null, 4408); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4408                !commonAncestors.GetClosestCommonAncestorChild1())do { if (!closestCommonAncestorChild1) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(!commonAncestors
.GetClosestCommonAncestorChild1())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!commonAncestors.GetClosestCommonAncestorChild1
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!commonAncestors.GetClosestCommonAncestorChild1()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4408); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!commonAncestors.GetClosestCommonAncestorChild1()"
 ")"); do { MOZ_CrashSequence(__null, 4408); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4409  MOZ_ASSERT_IF(!closestCommonAncestorChild2,do { if (!closestCommonAncestorChild2) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(!commonAncestors
.GetClosestCommonAncestorChild2())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!commonAncestors.GetClosestCommonAncestorChild2
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!commonAncestors.GetClosestCommonAncestorChild2()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4410); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!commonAncestors.GetClosestCommonAncestorChild2()"
 ")"); do { MOZ_CrashSequence(__null, 4410); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4410                !commonAncestors.GetClosestCommonAncestorChild2())do { if (!closestCommonAncestorChild2) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(!commonAncestors
.GetClosestCommonAncestorChild2())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!commonAncestors.GetClosestCommonAncestorChild2
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!commonAncestors.GetClosestCommonAncestorChild2()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4410); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!commonAncestors.GetClosestCommonAncestorChild2()"
 ")"); do { MOZ_CrashSequence(__null, 4410); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4411  if (closestCommonAncestorChild1 && closestCommonAncestorChild2) {
4412    return CompareClosestCommonAncestorChildren<
4413        TreeKindToCompareChildren<aKind>()>(
4414        *closestCommonAncestor, closestCommonAncestorChild1,
4415        closestCommonAncestorChild2, aIndexCache);
4416  }
4417 
4418  if (closestCommonAncestorChild2) {
4419    MOZ_ASSERT(GetParentNodeForComparison<aKind>::Get(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2
) == aBoundary1.GetContainer())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get( closestCommonAncestorChild2) == aBoundary1.GetContainer
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2) == aBoundary1.GetContainer()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4420); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2) == aBoundary1.GetContainer()"
 ")"); do { MOZ_CrashSequence(__null, 4420); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
4420                   closestCommonAncestorChild2) == aBoundary1.GetContainer())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2
) == aBoundary1.GetContainer())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get( closestCommonAncestorChild2) == aBoundary1.GetContainer
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2) == aBoundary1.GetContainer()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4420); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild2) == aBoundary1.GetContainer()"
 ")"); do { MOZ_CrashSequence(__null, 4420); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4421    // FIXME: bug 1946003 and bug 1946008.
4422    if (MOZ_UNLIKELY(closestCommonAncestorChild2->IsDocumentFragment())(__builtin_expect(!!(closestCommonAncestorChild2->IsDocumentFragment
()), 0))) {
4423      // XXX Keep the odd traditional behavior for now.
4424      return Some(1);
4425    }
4426    // If the common ancestor is a shadow host, closestCommonAncestorChild2 must
4427    // be a child node of the host and we shouldn't handle the flattened tree.
4428    // Therefore, we can compare closestCommonAncestorChild2 and the child at
4429    // aBoundary1 can be compared within TreeKind::DOM tree.
4430    // NOTE: When aKind is TreeKind::FlatForSelection,
4431    // GetParentNodeForComparison returns the shadow host as the parent node
4432    // of a child node even if it's not assigned to any <slot>. Therefore, even
4433    // when we should return Nothing, we may return Some value for now.
4434    // Therefore, we need to relax this assertion for TreeKind::FlatForSelection
4435    // until fixing bug 2014622. And it's okay to compare the child nodes not a
4436    // part of flattened tree as in the DOM since anyway we return wrong value.
4437    MOZ_ASSERT_IF(do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild2
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild2->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4440); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4440); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4438        aKind != TreeKind::FlatForSelection &&do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild2
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild2->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4440); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4440); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4439            closestCommonAncestor->GetShadowRoot<aKind>(),do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild2
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild2->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4440); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4440); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4440        closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor)do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild2
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild2->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4440); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild2->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4440); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4441    const Maybe<int32_t> comp = nsContentUtils::CompareChildNodes<
4442        TreeKindToCompareChildren<TreeKindToCompareChildren<aKind>()>()>(
4443        *closestCommonAncestor, aBoundary1.GetChildAtOffset(),
4444        closestCommonAncestorChild2, aIndexCache);
4445    NS_ASSERTION(comp.isSome(),do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4447); MOZ_PretendNoReturn
(); } } while (0)
4446                 "nsContentUtils::CompareChildNodes() must return Some here. "do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4447); MOZ_PretendNoReturn
(); } } while (0)
4447                 "It should've already checked before we call it.")do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4447); MOZ_PretendNoReturn
(); } } while (0);
4448    if (NS_WARN_IF(comp.isNothing())NS_warn_if_impl(comp.isNothing(), "comp.isNothing()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4448)) {
4449      // XXX Keep the odd traditional behavior for now.
4450      return Some(1);
4451    }
4452    // If the child of the closest common ancestor is at aBoundary1, it means
4453    // that aBoundary2 refers a descendant of the child. So, aBoundary2 refers a
4454    // descendant of aBoundary1.
4455    if (!*comp) {
4456      MOZ_ASSERT_IF(do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild2) == *aBoundary1
.Offset(kValidOrInvalidOffsets1)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4461); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4461); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4457          aKind != TreeKind::FlatForSelection,do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild2) == *aBoundary1
.Offset(kValidOrInvalidOffsets1)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4461); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4461); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4458          *closestCommonAncestordo { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild2) == *aBoundary1
.Offset(kValidOrInvalidOffsets1)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4461); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4461); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4459                  ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>(do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild2) == *aBoundary1
.Offset(kValidOrInvalidOffsets1)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4461); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4461); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4460                      closestCommonAncestorChild2) ==do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild2) == *aBoundary1
.Offset(kValidOrInvalidOffsets1)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4461); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4461); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4461              *aBoundary1.Offset(kValidOrInvalidOffsets1))do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild2) == *aBoundary1
.Offset(kValidOrInvalidOffsets1)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4461); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) == *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4461); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4462      return Some(-1);
4463    }
4464    // ComputeIndexInParentNode() is the index in the regular child list, which
4465    // native anonymous content is not part of. CompareChildNodes already
4466    // ordered NAC via GetIndexInParent, so skip the regular-index sanity checks
4467    // for it.
4468    const DebugOnly<bool> child2IsNAC =
4469        closestCommonAncestorChild2->IsRootOfNativeAnonymousSubtree();
4470    MOZ_ASSERT_IF(do { if (!child2IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary1.Offset
(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4475); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
 ")"); do { MOZ_CrashSequence(__null, 4475); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4471        !child2IsNAC && *comp < 0 && aKind != TreeKind::FlatForSelection,do { if (!child2IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary1.Offset
(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4475); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
 ")"); do { MOZ_CrashSequence(__null, 4475); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4472        *aBoundary1.Offset(kValidOrInvalidOffsets1) <do { if (!child2IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary1.Offset
(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4475); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
 ")"); do { MOZ_CrashSequence(__null, 4475); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4473            *closestCommonAncestordo { if (!child2IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary1.Offset
(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4475); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
 ")"); do { MOZ_CrashSequence(__null, 4475); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4474                 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>(do { if (!child2IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary1.Offset
(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4475); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
 ")"); do { MOZ_CrashSequence(__null, 4475); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4475                     closestCommonAncestorChild2))do { if (!child2IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary1.Offset
(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4475); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary1.Offset(kValidOrInvalidOffsets1) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2)"
 ")"); do { MOZ_CrashSequence(__null, 4475); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4476    MOZ_ASSERT_IF(do { if (!child2IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) < *aBoundary1.Offset(
kValidOrInvalidOffsets1))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4481); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4481); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4477        !child2IsNAC && *comp > 0 && aKind != TreeKind::FlatForSelection,do { if (!child2IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) < *aBoundary1.Offset(
kValidOrInvalidOffsets1))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4481); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4481); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4478        *closestCommonAncestordo { if (!child2IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) < *aBoundary1.Offset(
kValidOrInvalidOffsets1))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4481); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4481); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4479                ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>(do { if (!child2IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) < *aBoundary1.Offset(
kValidOrInvalidOffsets1))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4481); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4481); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4480                    closestCommonAncestorChild2) <do { if (!child2IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) < *aBoundary1.Offset(
kValidOrInvalidOffsets1))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4481); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4481); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4481            *aBoundary1.Offset(kValidOrInvalidOffsets1))do { if (!child2IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild2) < *aBoundary1.Offset(
kValidOrInvalidOffsets1))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4481); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild2) < *aBoundary1.Offset(kValidOrInvalidOffsets1)"
 ")"); do { MOZ_CrashSequence(__null, 4481); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4482    return comp;
4483  }
4484 
4485  MOZ_ASSERT(closestCommonAncestorChild1)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(closestCommonAncestorChild1)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1)
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4485); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1" ")"); do { MOZ_CrashSequence
(__null, 4485); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
4486  MOZ_ASSERT(GetParentNodeForComparison<aKind>::Get(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1
) == aBoundary2.GetContainer())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get( closestCommonAncestorChild1) == aBoundary2.GetContainer
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1) == aBoundary2.GetContainer()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4487); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1) == aBoundary2.GetContainer()"
 ")"); do { MOZ_CrashSequence(__null, 4487); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
4487                 closestCommonAncestorChild1) == aBoundary2.GetContainer())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1
) == aBoundary2.GetContainer())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(GetParentNodeForComparison<
aKind>::Get( closestCommonAncestorChild1) == aBoundary2.GetContainer
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1) == aBoundary2.GetContainer()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4487); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "GetParentNodeForComparison<aKind>::Get( closestCommonAncestorChild1) == aBoundary2.GetContainer()"
 ")"); do { MOZ_CrashSequence(__null, 4487); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4488  // FIXME: bug 1946003 and bug 1946008.
4489  if (MOZ_UNLIKELY(closestCommonAncestorChild1->IsDocumentFragment())(__builtin_expect(!!(closestCommonAncestorChild1->IsDocumentFragment
()), 0))) {
4490    // XXX Keep the odd traditional behavior for now.
4491    return Some(-1);
4492  }
4493  // If the common ancestor is a shadow host, closestCommonAncestorChild1 must
4494  // be a child node of the host and we shouldn't handle the flattened tree.
4495  // Therefore, we can compare closestCommonAncestorChild1 and the child at
4496  // aBoundary2 can be compared within TreeKind::DOM tree.
4497  // NOTE: When aKind is TreeKind::FlatForSelection,
4498  // GetParentNodeForComparison returns the shadow host as the parent node
4499  // of a child node even if it's not assigned to any <slot>. Therefore, even
4500  // when we should return Nothing, we may return Some value for now.
4501  // Therefore, we need to relax this assertion for TreeKind::FlatForSelection
4502  // until fixing bug 2014622. And it's okay to compare the child nodes not a
4503  // part of flattened tree as in the DOM since anyway we return wrong value.
4504  MOZ_ASSERT_IF(do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild1
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4507); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4507); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4505      aKind != TreeKind::FlatForSelection &&do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild1
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4507); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4507); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4506          closestCommonAncestor->GetShadowRoot<aKind>(),do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild1
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4507); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4507); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4507      closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor)do { if (aKind != TreeKind::FlatForSelection && closestCommonAncestor
->GetShadowRoot<aKind>()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(closestCommonAncestorChild1
->GetParentNode() == closestCommonAncestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(closestCommonAncestorChild1->
GetParentNode() == closestCommonAncestor))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4507); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "closestCommonAncestorChild1->GetParentNode() == closestCommonAncestor"
 ")"); do { MOZ_CrashSequence(__null, 4507); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4508  const Maybe<int32_t> comp =
4509      nsContentUtils::CompareChildNodes<TreeKindToCompareChildren<aKind>()>(
4510          *closestCommonAncestor, closestCommonAncestorChild1,
4511          aBoundary2.GetChildAtOffset(), aIndexCache);
4512  NS_ASSERTION(comp.isSome(),do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4514); MOZ_PretendNoReturn
(); } } while (0)
4513               "nsContentUtils::CompareChildNodes() must return Some here. "do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4514); MOZ_PretendNoReturn
(); } } while (0)
4514               "It should've already checked before we call it.")do { if (!(comp.isSome())) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "nsContentUtils::CompareChildNodes() must return Some here. "
 "It should've already checked before we call it.", "comp.isSome()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4514); MOZ_PretendNoReturn
(); } } while (0);
4515  if (NS_WARN_IF(comp.isNothing())NS_warn_if_impl(comp.isNothing(), "comp.isNothing()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4515)) {
4516    // XXX Keep the odd traditional behavior for now.
4517    return Some(-1);
4518  }
4519  // If the child of the closet common ancestor is at aBoundary2, it means that
4520  // aBoundary1 refers a descendant of the child. So, aBoundary1 refers a
4521  // descendant of aBoundary2.
4522  if (!*comp) {
4523    MOZ_ASSERT_IF(aKind != TreeKind::FlatForSelection,do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild1) == *aBoundary2
.Offset(kValidOrInvalidOffsets2)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4527); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4527); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4524                  *closestCommonAncestordo { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild1) == *aBoundary2
.Offset(kValidOrInvalidOffsets2)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4527); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4527); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4525                          ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>(do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild1) == *aBoundary2
.Offset(kValidOrInvalidOffsets2)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4527); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4527); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4526                              closestCommonAncestorChild1) ==do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild1) == *aBoundary2
.Offset(kValidOrInvalidOffsets2)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4527); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4527); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4527                      *aBoundary2.Offset(kValidOrInvalidOffsets2))do { if (aKind != TreeKind::FlatForSelection) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren
<aKind>()>( closestCommonAncestorChild1) == *aBoundary2
.Offset(kValidOrInvalidOffsets2)))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4527); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) == *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4527); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4528    return Some(1);
4529  }
4530  // ComputeIndexInParentNode() is the index in the regular child list, which
4531  // native anonymous content is not part of. CompareChildNodes already ordered
4532  // NAC via GetIndexInParent, so skip the regular-index sanity checks for it.
4533  const DebugOnly<bool> child1IsNAC =
4534      closestCommonAncestorChild1->IsRootOfNativeAnonymousSubtree();
4535  MOZ_ASSERT_IF(do { if (!child1IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) < *aBoundary2.Offset(
kValidOrInvalidOffsets2))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4540); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4540); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4536      !child1IsNAC && *comp < 0 && aKind != TreeKind::FlatForSelection,do { if (!child1IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) < *aBoundary2.Offset(
kValidOrInvalidOffsets2))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4540); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4540); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4537      *closestCommonAncestordo { if (!child1IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) < *aBoundary2.Offset(
kValidOrInvalidOffsets2))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4540); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4540); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4538              ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>(do { if (!child1IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) < *aBoundary2.Offset(
kValidOrInvalidOffsets2))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4540); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4540); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4539                  closestCommonAncestorChild1) <do { if (!child1IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) < *aBoundary2.Offset(
kValidOrInvalidOffsets2))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4540); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4540); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4540          *aBoundary2.Offset(kValidOrInvalidOffsets2))do { if (!child1IsNAC && *comp < 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1) < *aBoundary2.Offset(
kValidOrInvalidOffsets2))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(*closestCommonAncestor ->
ComputeIndexOf<TreeKindToCompareChildren<aKind>()>
( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4540); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1) < *aBoundary2.Offset(kValidOrInvalidOffsets2)"
 ")"); do { MOZ_CrashSequence(__null, 4540); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4541  MOZ_ASSERT_IF(do { if (!child1IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary2.Offset
(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4546); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
 ")"); do { MOZ_CrashSequence(__null, 4546); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4542      !child1IsNAC && *comp > 0 && aKind != TreeKind::FlatForSelection,do { if (!child1IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary2.Offset
(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4546); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
 ")"); do { MOZ_CrashSequence(__null, 4546); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4543      *aBoundary2.Offset(kValidOrInvalidOffsets2) <do { if (!child1IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary2.Offset
(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4546); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
 ")"); do { MOZ_CrashSequence(__null, 4546); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4544          *closestCommonAncestordo { if (!child1IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary2.Offset
(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4546); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
 ")"); do { MOZ_CrashSequence(__null, 4546); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4545               ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>(do { if (!child1IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary2.Offset
(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4546); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
 ")"); do { MOZ_CrashSequence(__null, 4546); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
4546                   closestCommonAncestorChild1))do { if (!child1IsNAC && *comp > 0 && aKind
 != TreeKind::FlatForSelection) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(*aBoundary2.Offset
(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf
<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor
 ->ComputeIndexOf<TreeKindToCompareChildren<aKind>
()>( closestCommonAncestorChild1)))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4546); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "*aBoundary2.Offset(kValidOrInvalidOffsets2) < *closestCommonAncestor ->ComputeIndexOf<TreeKindToCompareChildren<aKind>()>( closestCommonAncestorChild1)"
 ")"); do { MOZ_CrashSequence(__null, 4546); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
4547  return comp;
4548}
4549 
4550inline bool IsCharInSet(const char* aSet, const char16_t aChar) {
4551  char16_t ch;
4552  while ((ch = *aSet)) {
4553    if (aChar == char16_t(ch)) {
4554      return true;
4555    }
4556    ++aSet;
4557  }
4558  return false;
4559}
4560 
4561/**
4562 * This method strips leading/trailing chars, in given set, from string.
4563 */
4564 
4565// static
4566const nsDependentSubstring nsContentUtils::TrimCharsInSet(
4567    const char* aSet, const nsAString& aValue) {
4568  nsAString::const_iterator valueCurrent, valueEnd;
4569 
4570  aValue.BeginReading(valueCurrent);
4571  aValue.EndReading(valueEnd);
4572 
4573  // Skip characters in the beginning
4574  while (valueCurrent != valueEnd) {
4575    if (!IsCharInSet(aSet, *valueCurrent)) {
4576      break;
4577    }
4578    ++valueCurrent;
4579  }
4580 
4581  if (valueCurrent != valueEnd) {
4582    for (;;) {
4583      --valueEnd;
4584      if (!IsCharInSet(aSet, *valueEnd)) {
4585        break;
4586      }
4587    }
4588    ++valueEnd;  // Step beyond the last character we want in the value.
4589  }
4590 
4591  // valueEnd should point to the char after the last to copy
4592  return Substring(valueCurrent, valueEnd);
4593}
4594 
4595/**
4596 * This method strips leading and trailing whitespace from a string.
4597 */
4598 
4599// static
4600template <bool IsWhitespace(char16_t)>
4601const nsDependentSubstring nsContentUtils::TrimWhitespace(const nsAString& aStr,
4602                                                          bool aTrimTrailing) {
4603  nsAString::const_iterator start, end;
4604 
4605  aStr.BeginReading(start);
4606  aStr.EndReading(end);
4607 
4608  // Skip whitespace characters in the beginning
4609  while (start != end && IsWhitespace(*start)) {
4610    ++start;
4611  }
4612 
4613  if (aTrimTrailing) {
4614    // Skip whitespace characters in the end.
4615    while (end != start) {
4616      --end;
4617 
4618      if (!IsWhitespace(*end)) {
4619        // Step back to the last non-whitespace character.
4620        ++end;
4621 
4622        break;
4623      }
4624    }
4625  }
4626 
4627  // Return a substring for the string w/o leading and/or trailing
4628  // whitespace
4629 
4630  return Substring(start, end);
4631}
4632 
4633// Declaring the templates we are going to use avoid linking issues without
4634// inlining the method. Considering there is not so much spaces checking
4635// methods we can consider this to be better than inlining.
4636template const nsDependentSubstring
4637nsContentUtils::TrimWhitespace<nsCRT::IsAsciiSpace>(const nsAString&, bool);
4638template const nsDependentSubstring nsContentUtils::TrimWhitespace<
4639    nsContentUtils::IsHTMLWhitespace>(const nsAString&, bool);
4640template const nsDependentSubstring nsContentUtils::TrimWhitespace<
4641    nsContentUtils::IsHTMLWhitespaceOrNBSP>(const nsAString&, bool);
4642 
4643static inline void KeyAppendSep(nsACString& aKey) {
4644  if (!aKey.IsEmpty()) {
4645    aKey.Append('>');
4646  }
4647}
4648 
4649static inline void KeyAppendString(const nsAString& aString, nsACString& aKey) {
4650  KeyAppendSep(aKey);
4651 
4652  // Could escape separator here if collisions happen.  > is not a legal char
4653  // for a name or type attribute, so we should be safe avoiding that extra
4654  // work.
4655 
4656  AppendUTF16toUTF8(aString, aKey);
4657}
4658 
4659static inline void KeyAppendString(const nsACString& aString,
4660                                   nsACString& aKey) {
4661  KeyAppendSep(aKey);
4662 
4663  // Could escape separator here if collisions happen.  > is not a legal char
4664  // for a name or type attribute, so we should be safe avoiding that extra
4665  // work.
4666 
4667  aKey.Append(aString);
4668}
4669 
4670static inline void KeyAppendInt(int32_t aInt, nsACString& aKey) {
4671  KeyAppendSep(aKey);
4672 
4673  aKey.AppendInt(aInt);
4674}
4675 
4676static inline bool IsAutocompleteOff(const nsIContent* aContent) {
4677  return aContent->IsElement() &&
4678         aContent->AsElement()->AttrValueIs(kNameSpaceID_None,
4679                                            nsGkAtoms::autocomplete, u"off"_ns,
4680                                            eIgnoreCase);
4681}
4682 
4683/*static*/
4684void nsContentUtils::GenerateStateKey(nsIContent* aContent, Document* aDocument,
4685                                      nsACString& aKey) {
4686  MOZ_ASSERT(aContent)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aContent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aContent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aContent", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4686); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContent" ")"
); do { MOZ_CrashSequence(__null, 4686); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4687 
4688  aKey.Truncate();
4689 
4690  uint32_t partID = aDocument ? aDocument->GetPartID() : 0;
4691 
4692  // Don't capture state for anonymous content
4693  if (aContent->IsInNativeAnonymousSubtree()) {
4694    return;
4695  }
4696 
4697  if (IsAutocompleteOff(aContent)) {
4698    return;
4699  }
4700 
4701  RefPtr<Document> doc = aContent->GetUncomposedDoc();
4702 
4703  KeyAppendInt(partID, aKey);  // first append a partID
4704  bool generatedUniqueKey = false;
4705 
4706  if (doc && doc->IsHTMLOrXHTML()) {
4707    nsHTMLDocument* htmlDoc = doc->AsHTMLDocument();
4708 
4709    // If we have a form control and can calculate form information, use that
4710    // as the key - it is more reliable than just recording position in the
4711    // DOM.
4712    // XXXbz Is it, really?  We have bugs on this, I think...
4713    // Important to have a unique key, and tag/type/name may not be.
4714    //
4715    // The format of the key depends on whether the control has a form,
4716    // and whether the element was parser inserted:
4717    //
4718    // [Has Form, Parser Inserted]:
4719    //   fp>type>FormNum>IndOfControlInForm>FormName>name
4720    //
4721    // [No Form, Parser Inserted]:
4722    //   dp>type>ControlNum>name
4723    //
4724    // [Has Form, Not Parser Inserted]:
4725    //   fn>type>IndOfFormInDoc>IndOfControlInForm>FormName>name
4726    //
4727    // [No Form, Not Parser Inserted]:
4728    //   dn>type>IndOfControlInDoc>name
4729    //
4730    // XXX We don't need to use index if name is there
4731    // XXXbz We don't?  Why not?  I don't follow.
4732    //
4733    if (const auto* control = nsIFormControl::FromNode(aContent)) {
4734      // Get the control number if this was a parser inserted element from the
4735      // network.
4736      int32_t controlNumber =
4737          control->GetParserInsertedControlNumberForStateKey();
4738      bool parserInserted = controlNumber != -1;
4739 
4740      RefPtr<ContentList> htmlForms;
4741      RefPtr<ContentList> htmlFormControls;
4742      if (!parserInserted) {
4743        // Getting these lists is expensive, as we need to keep them up to date
4744        // as the document loads, so we avoid it if we don't need them.
4745        htmlDoc->GetFormsAndFormControls(getter_AddRefs(htmlForms),
4746                                         getter_AddRefs(htmlFormControls));
4747      }
4748 
4749      // Append the control type
4750      KeyAppendInt(int32_t(control->ControlType()), aKey);
4751 
4752      // If in a form, add form name / index of form / index in form
4753      HTMLFormElement* formElement = control->GetFormInternal();
4754      if (formElement) {
4755        if (IsAutocompleteOff(formElement)) {
4756          aKey.Truncate();
4757          return;
4758        }
4759 
4760        // Append the form number, if this is a parser inserted control, or
4761        // the index of the form in the document otherwise.
4762        bool appendedForm = false;
4763        if (parserInserted) {
4764          MOZ_ASSERT(formElement->GetFormNumberForStateKey() != -1,do { static_assert( mozilla::detail::AssertionConditionType<
decltype(formElement->GetFormNumberForStateKey() != -1)>
::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(formElement->GetFormNumberForStateKey() != -1))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("formElement->GetFormNumberForStateKey() != -1"
 " (" "when generating a state key for a parser inserted form "
 "control we should have a parser inserted <form> element"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4766
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "formElement->GetFormNumberForStateKey() != -1"
 ") (" "when generating a state key for a parser inserted form "
 "control we should have a parser inserted <form> element"
 ")"); do { MOZ_CrashSequence(__null, 4766); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
4765                     "when generating a state key for a parser inserted form "do { static_assert( mozilla::detail::AssertionConditionType<
decltype(formElement->GetFormNumberForStateKey() != -1)>
::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(formElement->GetFormNumberForStateKey() != -1))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("formElement->GetFormNumberForStateKey() != -1"
 " (" "when generating a state key for a parser inserted form "
 "control we should have a parser inserted <form> element"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4766
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "formElement->GetFormNumberForStateKey() != -1"
 ") (" "when generating a state key for a parser inserted form "
 "control we should have a parser inserted <form> element"
 ")"); do { MOZ_CrashSequence(__null, 4766); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
4766                     "control we should have a parser inserted <form> element")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(formElement->GetFormNumberForStateKey() != -1)>
::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(formElement->GetFormNumberForStateKey() != -1))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("formElement->GetFormNumberForStateKey() != -1"
 " (" "when generating a state key for a parser inserted form "
 "control we should have a parser inserted <form> element"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4766
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "formElement->GetFormNumberForStateKey() != -1"
 ") (" "when generating a state key for a parser inserted form "
 "control we should have a parser inserted <form> element"
 ")"); do { MOZ_CrashSequence(__null, 4766); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4767          KeyAppendString("fp"_ns, aKey);
4768          KeyAppendInt(formElement->GetFormNumberForStateKey(), aKey);
4769          appendedForm = true;
4770        } else {
4771          KeyAppendString("fn"_ns, aKey);
4772          int32_t index = htmlForms->IndexOf(formElement, false);
4773          if (index <= -1) {
4774            //
4775            // XXX HACK this uses some state that was dumped into the document
4776            // specifically to fix bug 138892.  What we are trying to do is
4777            // *guess* which form this control's state is found in, with the
4778            // highly likely guess that the highest form parsed so far is the
4779            // one. This code should not be on trunk, only branch.
4780            //
4781            index = htmlDoc->GetNumFormsSynchronous() - 1;
4782          }
4783          if (index > -1) {
4784            KeyAppendInt(index, aKey);
4785            appendedForm = true;
4786          }
4787        }
4788 
4789        if (appendedForm) {
4790          // Append the index of the control in the form
4791          int32_t index = formElement->IndexOfContent(aContent);
4792 
4793          if (index > -1) {
4794            KeyAppendInt(index, aKey);
4795            generatedUniqueKey = true;
4796          }
4797        }
4798 
4799        // Append the form name
4800        nsAutoString formName;
4801        formElement->GetAttr(nsGkAtoms::name, formName);
4802        KeyAppendString(formName, aKey);
4803      } else {
4804        // Not in a form.  Append the control number, if this is a parser
4805        // inserted control, or the index of the control in the document
4806        // otherwise.
4807        if (parserInserted) {
4808          KeyAppendString("dp"_ns, aKey);
4809          KeyAppendInt(control->GetParserInsertedControlNumberForStateKey(),
4810                       aKey);
4811          generatedUniqueKey = true;
4812        } else {
4813          KeyAppendString("dn"_ns, aKey);
4814          int32_t index = htmlFormControls->IndexOf(aContent, true);
4815          if (index > -1) {
4816            KeyAppendInt(index, aKey);
4817            generatedUniqueKey = true;
4818          }
4819        }
4820 
4821        // Append the control name
4822        nsAutoString name;
4823        aContent->AsElement()->GetAttr(nsGkAtoms::name, name);
4824        KeyAppendString(name, aKey);
4825      }
4826    }
4827  }
4828 
4829  if (!generatedUniqueKey) {
4830    // Either we didn't have a form control or we aren't in an HTML document so
4831    // we can't figure out form info.  Append the tag name if it's an element
4832    // to avoid restoring state for one type of element on another type.
4833    if (aContent->IsElement()) {
4834      KeyAppendString(nsDependentAtomString(aContent->NodeInfo()->NameAtom()),
4835                      aKey);
4836    } else {
4837      // Append a character that is not "d" or "f" to disambiguate from
4838      // the case when we were a form control in an HTML document.
4839      KeyAppendString("o"_ns, aKey);
4840    }
4841 
4842    // Now start at aContent and append the indices of it and all its ancestors
4843    // in their containers.  That should at least pin down its position in the
4844    // DOM...
4845    nsINode* parent = aContent->GetParentNode();
4846    nsINode* content = aContent;
4847    while (parent) {
4848      if (content->IsShadowRoot()) {
4849        KeyAppendString("s"_ns, aKey);
4850      } else {
4851        KeyAppendInt(parent->ComputeIndexOf_Deprecated(content), aKey);
4852      }
4853      content = parent;
4854      parent = content->GetParentOrShadowHostNode();
4855    }
4856  }
4857}
4858 
4859// static
4860nsIPrincipal* nsContentUtils::SubjectPrincipal(JSContext* aCx) {
4861  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4861); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 4861); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
4862 
4863  // As opposed to SubjectPrincipal(), we do in fact assume that
4864  // we're in a realm here; anyone who calls this function in
4865  // situations where that's not the case is doing it wrong.
4866  JS::Realm* realm = js::GetContextRealm(aCx);
4867  MOZ_ASSERT(realm)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(realm)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(realm))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("realm", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4867); AnnotateMozCrashReason("MOZ_ASSERT" "(" "realm" ")")
; do { MOZ_CrashSequence(__null, 4867); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4868 
4869  JSPrincipals* principals = JS::GetRealmPrincipals(realm);
4870  return nsJSPrincipals::get(principals);
4871}
4872 
4873// static
4874nsIPrincipal* nsContentUtils::SubjectPrincipal() {
4875  MOZ_ASSERT(IsInitialized())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(IsInitialized())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(IsInitialized()))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("IsInitialized()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4875); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "IsInitialized()" ")"); do { MOZ_CrashSequence
(__null, 4875); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
4876  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 4876); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 4876); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
4877  JSContext* cx = GetCurrentJSContext();
4878  if (!cx) {
4879    MOZ_CRASH(do { do { } while (false); MOZ_ReportCrash("" "Accessing the Subject Principal without an AutoJSAPI on the stack is "
 "forbidden", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4881); AnnotateMozCrashReason("MOZ_CRASH(" "Accessing the Subject Principal without an AutoJSAPI on the stack is "
 "forbidden" ")"); do { MOZ_CrashSequence(__null, 4881); __attribute__
((nomerge)) ::abort(); } while (false); } while (false)
4880        "Accessing the Subject Principal without an AutoJSAPI on the stack is "do { do { } while (false); MOZ_ReportCrash("" "Accessing the Subject Principal without an AutoJSAPI on the stack is "
 "forbidden", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4881); AnnotateMozCrashReason("MOZ_CRASH(" "Accessing the Subject Principal without an AutoJSAPI on the stack is "
 "forbidden" ")"); do { MOZ_CrashSequence(__null, 4881); __attribute__
((nomerge)) ::abort(); } while (false); } while (false)
4881        "forbidden")do { do { } while (false); MOZ_ReportCrash("" "Accessing the Subject Principal without an AutoJSAPI on the stack is "
 "forbidden", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4881); AnnotateMozCrashReason("MOZ_CRASH(" "Accessing the Subject Principal without an AutoJSAPI on the stack is "
 "forbidden" ")"); do { MOZ_CrashSequence(__null, 4881); __attribute__
((nomerge)) ::abort(); } while (false); } while (false);
4882  }
4883 
4884  JS::Realm* realm = js::GetContextRealm(cx);
4885 
4886  // When an AutoJSAPI is instantiated, we are in a null realm until the
4887  // first JSAutoRealm, which is kind of a purgatory as far as permissions
4888  // go. It would be nice to just hard-abort if somebody does a security check
4889  // in this purgatory zone, but that would be too fragile, since it could be
4890  // triggered by random IsCallerChrome() checks 20-levels deep.
4891  //
4892  // So we want to return _something_ here - and definitely not the System
4893  // Principal, since that would make an AutoJSAPI a very dangerous thing to
4894  // instantiate.
4895  //
4896  // The natural thing to return is a null principal. Ideally, we'd return a
4897  // different null principal each time, to avoid any unexpected interactions
4898  // when the principal accidentally gets inherited somewhere. But
4899  // SubjectPrincipal doesn't return strong references, so there's no way to
4900  // sanely manage the lifetime of multiple null principals.
4901  //
4902  // So we use a singleton null principal. To avoid it being accidentally
4903  // inherited and becoming a "real" subject or object principal, we do a
4904  // release-mode assert during realm creation against using this principal on
4905  // an actual global.
4906  if (!realm) {
4907    return sNullSubjectPrincipal;
4908  }
4909 
4910  return SubjectPrincipal(cx);
4911}
4912 
4913// static
4914nsIPrincipal* nsContentUtils::ObjectPrincipal(JSObject* aObj) {
4915#ifdef DEBUG1
4916  JS::AssertObjectBelongsToCurrentThread(aObj);
4917#endif
4918 
4919  MOZ_DIAGNOSTIC_ASSERT(!js::IsCrossCompartmentWrapper(aObj))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!js::IsCrossCompartmentWrapper(aObj))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!js::IsCrossCompartmentWrapper
(aObj)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!js::IsCrossCompartmentWrapper(aObj)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 4919); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "!js::IsCrossCompartmentWrapper(aObj)"
 ")"); do { MOZ_CrashSequence(__null, 4919); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
4920 
4921  JS::Realm* realm = js::GetNonCCWObjectRealm(aObj);
4922  JSPrincipals* principals = JS::GetRealmPrincipals(realm);
4923  return nsJSPrincipals::get(principals);
4924}
4925 
4926// static
4927nsresult nsContentUtils::NewURIWithDocumentCharset(nsIURI** aResult,
4928                                                   const nsAString& aSpec,
4929                                                   Document* aDocument,
4930                                                   nsIURI* aBaseURI) {
4931  if (aDocument) {
4932    return NS_NewURI(aResult, aSpec, aDocument->GetDocumentCharacterSet(),
4933                     aBaseURI);
4934  }
4935  return NS_NewURI(aResult, aSpec, nullptr, aBaseURI);
4936}
4937 
4938// static
4939bool nsContentUtils::ContainsChar(nsAtom* aAtom, char aChar) {
4940  const uint32_t len = aAtom->GetLength();
4941  if (!len) {
4942    return false;
4943  }
4944  const char16_t* name = aAtom->GetUTF16String();
4945  uint32_t i = 0;
4946  while (i < len) {
4947    if (name[i] == aChar) {
4948      return true;
4949    }
4950    i++;
4951  }
4952  return false;
4953}
4954 
4955// static
4956bool nsContentUtils::IsNameWithDash(nsAtom* aName) {
4957  // A valid custom element name is a sequence of characters name which
4958  // must match the PotentialCustomElementName production:
4959  // PotentialCustomElementName ::= [a-z] (PCENChar)* '-' (PCENChar)*
4960  const char16_t* name = aName->GetUTF16String();
4961  uint32_t len = aName->GetLength();
4962  bool hasDash = false;
4963 
4964  // A string name is a valid custom element name if all of the following are
4965  // true:
4966 
4967  // name's 0th code point is an ASCII lower alpha;
4968  if (!len || name[0] < 'a' || name[0] > 'z') {
4969    return false;
4970  }
4971 
4972  uint32_t i = 1;
4973  while (i < len) {
4974    // name does not contain any ASCII upper alphas
4975    if (name[i] >= 'A' && name[i] <= 'Z') {
4976      return false;
4977    }
4978 
4979    // name is a valid element local name;
4980    //
4981    //   // https://dom.spec.whatwg.org/#valid-element-local-name
4982    //   Step 2.1.
4983    //   If name contains ASCII whitespace, U+0000 NULL, U+002F (/), or U+003E
4984    //   (>), then return false.
4985    //
4986    //   ASCII whitespace is U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, or
4987    //   U+0020 SPACE.
4988    if (name[i] == 0x0000 ||  // null
4989        name[i] == 0x0009 ||  // tab
4990        name[i] == 0x000A ||  // newline
4991        name[i] == 0x000C ||  // form feed
4992        name[i] == 0x000D ||  // carriage return
4993        name[i] == 0x0020 ||  // space
4994        name[i] == 0x002F ||  // /
4995        name[i] == 0x003E) {  // >
4996      return false;
4997    }
4998 
4999    if (name[i] == '-') {
5000      hasDash = true;
5001    }
5002 
5003    i++;
5004  }
5005  return hasDash;
5006}
5007 
5008// static
5009bool nsContentUtils::IsCustomElementName(nsAtom* aName, uint32_t aNameSpaceID) {
5010  // Allow non-dashed names in XUL for XBL to Custom Element migrations.
5011  if (aNameSpaceID == kNameSpaceID_XUL8) {
5012    return true;
5013  }
5014 
5015  bool hasDash = IsNameWithDash(aName);
5016  if (!hasDash) {
5017    return false;
5018  }
5019 
5020  // The custom element name must not be one of the following values:
5021  //  annotation-xml
5022  //  color-profile
5023  //  font-face
5024  //  font-face-src
5025  //  font-face-uri
5026  //  font-face-format
5027  //  font-face-name
5028  //  missing-glyph
5029  return aName != nsGkAtoms::annotation_xml &&
5030         aName != nsGkAtoms::color_profile && aName != nsGkAtoms::font_face &&
5031         aName != nsGkAtoms::font_face_src &&
5032         aName != nsGkAtoms::font_face_uri &&
5033         aName != nsGkAtoms::font_face_format &&
5034         aName != nsGkAtoms::font_face_name && aName != nsGkAtoms::missingGlyph;
5035}
5036 
5037bool nsContentUtils::IsValidShadowHostName(nsAtom* aName,
5038                                           uint32_t aNameSpaceID) {
5039  return IsCustomElementName(aName, aNameSpaceID) ||
5040         aName == nsGkAtoms::article || aName == nsGkAtoms::aside ||
5041         aName == nsGkAtoms::blockquote || aName == nsGkAtoms::body ||
5042         aName == nsGkAtoms::div || aName == nsGkAtoms::footer ||
5043         aName == nsGkAtoms::h1 || aName == nsGkAtoms::h2 ||
5044         aName == nsGkAtoms::h3 || aName == nsGkAtoms::h4 ||
5045         aName == nsGkAtoms::h5 || aName == nsGkAtoms::h6 ||
5046         aName == nsGkAtoms::header || aName == nsGkAtoms::main ||
5047         aName == nsGkAtoms::nav || aName == nsGkAtoms::p ||
5048         aName == nsGkAtoms::section || aName == nsGkAtoms::span;
5049}
5050 
5051// static
5052nsresult nsContentUtils::CheckQName(const nsAString& aQualifiedName,
5053                                    bool aNamespaceAware,
5054                                    const char16_t** aColon) {
5055  const char* colon = nullptr;
5056  const char16_t* begin = aQualifiedName.BeginReading();
5057  const char16_t* end = aQualifiedName.EndReading();
5058 
5059  int result = MOZ_XMLCheckQName(reinterpret_cast<const char*>(begin),
5060                                 reinterpret_cast<const char*>(end),
5061                                 aNamespaceAware, &colon);
5062 
5063  if (!result) {
5064    if (aColon) {
5065      *aColon = reinterpret_cast<const char16_t*>(colon);
5066    }
5067 
5068    return NS_OK;
5069  }
5070 
5071  return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5072}
5073 
5074static inline bool IsValidRestrictedContinuation(char16_t c) {
5075  return mozilla::IsAsciiAlpha(c) || mozilla::IsAsciiDigit(c) || c == '-' ||
5076         c == '.' || c == ':' || c == '_' || c >= 0x80;
5077}
5078 
5079// static
5080// https://dom.spec.whatwg.org/#valid-element-local-name
5081// Two paths:
5082// 1. Starts with [A-Za-z]: continuation can be any char except
5083// null/whitespace/>/'/'
5084// 2. Starts with [:_>=0x80]: continuation must be [A-Za-z0-9-.:_>=0x80]
5085bool nsContentUtils::IsValidElementLocalName(const nsAString& aName) {
5086  if (aName.IsEmpty()) {
5087    return false;
5088  }
5089 
5090  const char16_t* ptr = aName.BeginReading();
5091  const char16_t* end = aName.EndReading();
5092  char16_t first = *ptr;
5093 
5094  if (mozilla::IsAsciiAlpha(first)) {
5095    // Path 1: ASCII alpha start - any continuation except forbidden chars.
5096    for (++ptr; ptr < end; ++ptr) {
5097      char16_t c = *ptr;
5098      if (c == 0 || IsHTMLWhitespace(c) || c == '/' || c == '>') {
5099        return false;
5100      }
5101    }
5102    return true;
5103  }
5104 
5105  if (first == ':' || first == '_' || first >= 0x80) {
5106    // Path 2: Colon, underscore, or non-ASCII start - restricted continuation.
5107    for (++ptr; ptr < end; ++ptr) {
5108      if (!IsValidRestrictedContinuation(*ptr)) {
5109        return false;
5110      }
5111    }
5112    return true;
5113  }
5114 
5115  // Starting with anything else (e.g., digits, other ASCII) is invalid.
5116  return false;
5117}
5118 
5119// static
5120// https://dom.spec.whatwg.org/#valid-attribute-local-name
5121bool nsContentUtils::IsValidAttributeLocalName(const nsAString& aName) {
5122  if (aName.IsEmpty()) {
5123    return false;
5124  }
5125  for (const char16_t* ptr = aName.BeginReading(); ptr < aName.EndReading();
5126       ptr++) {
5127    char16_t c = *ptr;
5128    if (c == 0 || IsHTMLWhitespace(c) || c == '>' || c == '/' || c == '=') {
5129      return false;
5130    }
5131  }
5132  return true;
5133}
5134 
5135// static
5136// https://dom.spec.whatwg.org/#valid-namespace-prefix
5137bool nsContentUtils::IsValidNamespacePrefix(const nsAString& aPrefix) {
5138  // Empty prefix is valid (means no prefix).
5139  if (aPrefix.IsEmpty()) {
5140    return true;
5141  }
5142  for (const char16_t* ptr = aPrefix.BeginReading(); ptr < aPrefix.EndReading();
5143       ptr++) {
5144    char16_t c = *ptr;
5145    if (c == 0 || IsHTMLWhitespace(c) || c == '/' || c == '>') {
5146      return false;
5147    }
5148  }
5149  return true;
5150}
5151 
5152// static
5153// https://dom.spec.whatwg.org/#valid-doctype-name
5154bool nsContentUtils::IsValidDoctypeName(const nsAString& aName) {
5155  // Empty doctype name is valid per spec (it just can't contain bad chars).
5156  for (const char16_t* ptr = aName.BeginReading(); ptr < aName.EndReading();
5157       ptr++) {
5158    char16_t c = *ptr;
5159    if (c == 0 || IsHTMLWhitespace(c) || c == '>') {
5160      return false;
5161    }
5162  }
5163  return true;
5164}
5165 
5166// static
5167// https://dom.spec.whatwg.org/#validate-and-extract
5168// This implements only the validation and parsing portion of the algorithm.
5169// Namespace resolution (steps involving namespace lookups) is handled by
5170// callers.
5171nsresult nsContentUtils::ParseQualifiedNameRelaxed(
5172    const nsAString& aQualifiedName, uint16_t aNodeType,
5173    const char16_t** aColon, const char16_t** aLocalNameEnd) {
5174  if (aColon) {
5175    *aColon = nullptr;
5176  }
5177  if (aLocalNameEnd) {
5178    *aLocalNameEnd = nullptr;
5179  }
5180 
5181  if (aQualifiedName.IsEmpty()) {
5182    return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5183  }
5184 
5185  const char16_t* begin = aQualifiedName.BeginReading();
5186  const char16_t* end = aQualifiedName.EndReading();
5187  const char16_t* firstColon = nullptr;
5188 
5189  for (const char16_t* ptr = begin; ptr < end; ptr++) {
5190    if (*ptr == ':') {
5191      firstColon = ptr;
5192      break;
5193    }
5194  }
5195 
5196  if (firstColon) {
5197    nsDependentSubstring prefix(begin, firstColon);
5198 
5199    if (prefix.IsEmpty()) {
5200      return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5201    }
5202 
5203    if (!IsValidNamespacePrefix(prefix)) {
5204      return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5205    }
5206 
5207    // Local name is everything after the first colon.
5208    nsDependentSubstring localName(firstColon + 1, end);
5209 
5210    // Local name must not be empty.
5211    if (localName.IsEmpty()) {
5212      return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5213    }
5214 
5215    // Validate local name based on node type.
5216    if (aNodeType == nsINode::ATTRIBUTE_NODE) {
5217      if (!IsValidAttributeLocalName(localName)) {
5218        return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5219      }
5220    } else {
5221      if (!IsValidElementLocalName(localName)) {
5222        return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5223      }
5224    }
5225 
5226    if (aColon) {
5227      *aColon = firstColon;
5228    }
5229    if (aLocalNameEnd) {
5230      *aLocalNameEnd = end;
5231    }
5232  } else {
5233    // No colon, the whole string is the local name.
5234    if (aNodeType == nsINode::ATTRIBUTE_NODE) {
5235      if (!IsValidAttributeLocalName(aQualifiedName)) {
5236        return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5237      }
5238    } else {
5239      if (!IsValidElementLocalName(aQualifiedName)) {
5240        return NS_ERROR_DOM_INVALID_CHARACTER_ERR;
5241      }
5242    }
5243  }
5244 
5245  return NS_OK;
5246}
5247 
5248// static
5249nsresult nsContentUtils::SplitQName(const nsIContent* aNamespaceResolver,
5250                                    const nsString& aQName, int32_t* aNamespace,
5251                                    nsAtom** aLocalName) {
5252  const char16_t* colon;
5253  nsresult rv = nsContentUtils::CheckQName(aQName, true, &colon);
5254  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5254); return rv; } } while (false);
5255 
5256  if (colon) {
5257    const char16_t* end;
5258    aQName.EndReading(end);
5259    nsAutoString nameSpace;
5260    rv = aNamespaceResolver->LookupNamespaceURIInternal(
5261        Substring(aQName.get(), colon), nameSpace);
5262    NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5262); return rv; } } while (false);
5263 
5264    *aNamespace = nsNameSpaceManager::GetInstance()->GetNameSpaceID(
5265        nameSpace, nsContentUtils::IsChromeDoc(aNamespaceResolver->OwnerDoc()));
5266    if (*aNamespace == kNameSpaceID_Unknown-1) return NS_ERROR_FAILURE;
5267 
5268    *aLocalName = NS_AtomizeMainThread(Substring(colon + 1, end)).take();
5269  } else {
5270    *aNamespace = kNameSpaceID_None;
5271    *aLocalName = NS_AtomizeMainThread(aQName).take();
5272  }
5273  NS_ENSURE_TRUE(aLocalName, NS_ERROR_OUT_OF_MEMORY)do { if ((__builtin_expect(!!(!(aLocalName)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aLocalName" ") failed",
 nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5273
); return NS_ERROR_OUT_OF_MEMORY; } } while (false);
5274  return NS_OK;
5275}
5276 
5277// static
5278nsresult nsContentUtils::GetNodeInfoFromQName(
5279    const nsAString& aNamespaceURI, const nsAString& aQualifiedName,
5280    nsNodeInfoManager* aNodeInfoManager, uint16_t aNodeType,
5281    mozilla::dom::NodeInfo** aNodeInfo) {
5282  const nsString& qName = PromiseFlatStringTPromiseFlatString<char16_t>(aQualifiedName);
5283  const char16_t* colon;
5284  const char16_t* localNameEnd;
5285  nsresult rv = nsContentUtils::ParseQualifiedNameRelaxed(
5286      qName, aNodeType, &colon, &localNameEnd);
5287  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5287); return rv; } } while (false);
5288 
5289  int32_t nsID;
5290  nsNameSpaceManager::GetInstance()->RegisterNameSpace(aNamespaceURI, nsID);
5291  if (colon) {
5292    RefPtr<nsAtom> prefix = NS_AtomizeMainThread(Substring(qName.get(), colon));
5293 
5294    rv = aNodeInfoManager->GetNodeInfo(Substring(colon + 1, localNameEnd),
5295                                       prefix, nsID, aNodeType, aNodeInfo);
5296  } else {
5297    rv = aNodeInfoManager->GetNodeInfo(aQualifiedName, nullptr, nsID, aNodeType,
5298                                       aNodeInfo);
5299  }
5300  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5300); return rv; } } while (false);
5301 
5302  return nsContentUtils::IsValidNodeName((*aNodeInfo)->NameAtom(),
5303                                         (*aNodeInfo)->GetPrefixAtom(),
5304                                         (*aNodeInfo)->NamespaceID())
5305             ? NS_OK
5306             : NS_ERROR_DOM_NAMESPACE_ERR;
5307}
5308 
5309// static
5310void nsContentUtils::SplitExpatName(const char16_t* aExpatName,
5311                                    nsAtom** aPrefix, nsAtom** aLocalName,
5312                                    int32_t* aNameSpaceID) {
5313  /**
5314   *  Expat can send the following:
5315   *    localName
5316   *    namespaceURI<separator>localName
5317   *    namespaceURI<separator>localName<separator>prefix
5318   *
5319   *  and we use 0xFFFF for the <separator>.
5320   *
5321   */
5322 
5323  const char16_t* uriEnd = nullptr;
5324  const char16_t* nameEnd = nullptr;
5325  const char16_t* pos;
5326  for (pos = aExpatName; *pos; ++pos) {
5327    if (*pos == 0xFFFF) {
5328      if (uriEnd) {
5329        nameEnd = pos;
5330      } else {
5331        uriEnd = pos;
5332      }
5333    }
5334  }
5335 
5336  const char16_t* nameStart;
5337  if (uriEnd) {
5338    nsNameSpaceManager::GetInstance()->RegisterNameSpace(
5339        nsDependentSubstring(aExpatName, uriEnd), *aNameSpaceID);
5340 
5341    nameStart = (uriEnd + 1);
5342    if (nameEnd) {
5343      const char16_t* prefixStart = nameEnd + 1;
5344      *aPrefix = NS_AtomizeMainThread(Substring(prefixStart, pos)).take();
5345    } else {
5346      nameEnd = pos;
5347      *aPrefix = nullptr;
5348    }
5349  } else {
5350    *aNameSpaceID = kNameSpaceID_None;
5351    nameStart = aExpatName;
5352    nameEnd = pos;
5353    *aPrefix = nullptr;
5354  }
5355  *aLocalName = NS_AtomizeMainThread(Substring(nameStart, nameEnd)).take();
5356}
5357 
5358// static
5359PresShell* nsContentUtils::GetPresShellForContent(const nsIContent* aContent) {
5360  Document* doc = aContent->GetComposedDoc();
5361  if (!doc) {
5362    return nullptr;
5363  }
5364  return doc->GetPresShell();
5365}
5366 
5367// static
5368nsPresContext* nsContentUtils::GetContextForContent(
5369    const nsIContent* aContent) {
5370  PresShell* presShell = GetPresShellForContent(aContent);
5371  if (!presShell) {
5372    return nullptr;
5373  }
5374  return presShell->GetPresContext();
5375}
5376 
5377// static
5378bool nsContentUtils::IsInPrivateBrowsing(nsILoadGroup* aLoadGroup) {
5379  if (!aLoadGroup) {
5380    return false;
5381  }
5382  // See duplicated code in Document::Reset/ResetToURI
5383  bool isPrivate = false;
5384  nsCOMPtr<nsIInterfaceRequestor> callbacks;
5385  aLoadGroup->GetNotificationCallbacks(getter_AddRefs(callbacks));
5386  if (callbacks) {
5387    nsCOMPtr<nsILoadContext> loadContext = do_GetInterface(callbacks);
5388    isPrivate = loadContext && loadContext->UsePrivateBrowsing();
5389  }
5390  return isPrivate;
5391}
5392 
5393// FIXME(emilio): This is (effectively) almost but not quite the same as
5394// Document::ShouldLoadImages(), which one is right?
5395bool nsContentUtils::DocumentInactiveForImageLoads(Document* aDocument) {
5396  if (!aDocument) {
5397    return false;
5398  }
5399  if (IsChromeDoc(aDocument) || aDocument->IsResourceDoc() ||
5400      aDocument->IsStaticDocument()) {
5401    return false;
5402  }
5403  nsCOMPtr<nsPIDOMWindowInner> win =
5404      do_QueryInterface(aDocument->GetScopeObject());
5405  return !win || !win->GetDocShell();
5406}
5407 
5408imgLoader* nsContentUtils::GetImgLoaderForDocument(Document* aDoc) {
5409  NS_ENSURE_TRUE(!DocumentInactiveForImageLoads(aDoc), nullptr)do { if ((__builtin_expect(!!(!(!DocumentInactiveForImageLoads
(aDoc))), 0))) { NS_DebugBreak(NS_DEBUG_WARNING, "NS_ENSURE_TRUE("
 "!DocumentInactiveForImageLoads(aDoc)" ") failed", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5409); return nullptr; } } while (false);
5410 
5411  if (!aDoc) {
5412    return imgLoader::NormalLoader();
5413  }
5414  const bool isPrivate = aDoc->IsInPrivateBrowsing();
5415  return isPrivate ? imgLoader::PrivateBrowsingLoader()
5416                   : imgLoader::NormalLoader();
5417}
5418 
5419// static
5420imgLoader* nsContentUtils::GetImgLoaderForChannel(nsIChannel* aChannel,
5421                                                  Document* aContext) {
5422  NS_ENSURE_TRUE(!DocumentInactiveForImageLoads(aContext), nullptr)do { if ((__builtin_expect(!!(!(!DocumentInactiveForImageLoads
(aContext))), 0))) { NS_DebugBreak(NS_DEBUG_WARNING, "NS_ENSURE_TRUE("
 "!DocumentInactiveForImageLoads(aContext)" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5422); return
 nullptr; } } while (false);
5423 
5424  if (!aChannel) {
5425    return imgLoader::NormalLoader();
5426  }
5427  return NS_UsePrivateBrowsing(aChannel) ? imgLoader::PrivateBrowsingLoader()
5428                                         : imgLoader::NormalLoader();
5429}
5430 
5431// static
5432int32_t nsContentUtils::CORSModeToLoadImageFlags(mozilla::CORSMode aMode) {
5433  switch (aMode) {
5434    case CORS_ANONYMOUS:
5435      return imgILoader::LOAD_CORS_ANONYMOUS;
5436    case CORS_USE_CREDENTIALS:
5437      return imgILoader::LOAD_CORS_USE_CREDENTIALS;
5438    default:
5439      return 0;
5440  }
5441}
5442 
5443// static
5444nsresult nsContentUtils::LoadImage(
5445    nsIURI* aURI, nsINode* aContext, Document* aLoadingDocument,
5446    nsIPrincipal* aLoadingPrincipal, uint64_t aRequestContextID,
5447    nsIReferrerInfo* aReferrerInfo, imgINotificationObserver* aObserver,
5448    int32_t aLoadFlags, const nsAString& initiatorType,
5449    imgRequestProxy** aRequest, nsContentPolicyType aContentPolicyType,
5450    bool aUseUrgentStartForChannel, bool aLinkPreload,
5451    uint64_t aEarlyHintPreloaderId,
5452    mozilla::dom::FetchPriority aFetchPriority) {
5453  MOZ_ASSERT(aURI, "Must have a URI")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aURI)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(aURI))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("aURI" " (" "Must have a URI" ")"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5453); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aURI" ") (" "Must have a URI" ")"); do { MOZ_CrashSequence
(__null, 5453); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
5454  MOZ_ASSERT(aContext, "Must have a context")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aContext)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aContext))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aContext" " (" "Must have a context"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5454
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContext" ") (" "Must have a context"
 ")"); do { MOZ_CrashSequence(__null, 5454); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
5455  MOZ_ASSERT(aLoadingDocument, "Must have a document")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aLoadingDocument)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aLoadingDocument))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("aLoadingDocument"
 " (" "Must have a document" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5455); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aLoadingDocument"
 ") (" "Must have a document" ")"); do { MOZ_CrashSequence(__null
, 5455); __attribute__((nomerge)) ::abort(); } while (false);
 } } while (false);
5456  MOZ_ASSERT(aLoadingPrincipal, "Must have a principal")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aLoadingPrincipal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aLoadingPrincipal))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aLoadingPrincipal"
 " (" "Must have a principal" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5456); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aLoadingPrincipal"
 ") (" "Must have a principal" ")"); do { MOZ_CrashSequence(__null
, 5456); __attribute__((nomerge)) ::abort(); } while (false);
 } } while (false);
5457  MOZ_ASSERT(aRequest, "Null out param")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aRequest)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aRequest))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aRequest" " (" "Null out param"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5457
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aRequest" ") (" "Null out param"
 ")"); do { MOZ_CrashSequence(__null, 5457); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
5458 
5459  imgLoader* imgLoader = GetImgLoaderForDocument(aLoadingDocument);
5460  if (!imgLoader) {
5461    // nothing we can do here
5462    return NS_ERROR_FAILURE;
5463  }
5464 
5465  nsCOMPtr<nsILoadGroup> loadGroup = aLoadingDocument->GetDocumentLoadGroup();
5466 
5467  nsIURI* documentURI = aLoadingDocument->GetDocumentURI();
5468 
5469  NS_ASSERTION(loadGroup || aLoadingDocument->IsSVGGlyphsDocument(),do { if (!(loadGroup || aLoadingDocument->IsSVGGlyphsDocument
())) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Could not get loadgroup; onload may fire too early"
, "loadGroup || aLoadingDocument->IsSVGGlyphsDocument()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5470); MOZ_PretendNoReturn(); } } while (0)
5470               "Could not get loadgroup; onload may fire too early")do { if (!(loadGroup || aLoadingDocument->IsSVGGlyphsDocument
())) { NS_DebugBreak(NS_DEBUG_ASSERTION, "Could not get loadgroup; onload may fire too early"
, "loadGroup || aLoadingDocument->IsSVGGlyphsDocument()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5470); MOZ_PretendNoReturn(); } } while (0);
5471 
5472  // XXXbz using "documentURI" for the initialDocumentURI is not quite
5473  // right, but the best we can do here...
5474  return imgLoader->LoadImage(aURI,               /* uri to load */
5475                              documentURI,        /* initialDocumentURI */
5476                              aReferrerInfo,      /* referrerInfo */
5477                              aLoadingPrincipal,  /* loading principal */
5478                              aRequestContextID,  /* request context ID */
5479                              loadGroup,          /* loadgroup */
5480                              aObserver,          /* imgINotificationObserver */
5481                              aContext,           /* loading context */
5482                              aLoadingDocument,   /* uniquification key */
5483                              aLoadFlags,         /* load flags */
5484                              nullptr,            /* cache key */
5485                              aContentPolicyType, /* content policy type */
5486                              initiatorType,      /* the load initiator */
5487                              aUseUrgentStartForChannel, /* urgent-start flag */
5488                              aLinkPreload, /* <link preload> initiator */
5489                              aEarlyHintPreloaderId, aFetchPriority, aRequest);
5490}
5491 
5492// static
5493already_AddRefed<imgIContainer> nsContentUtils::GetImageFromContent(
5494    nsIImageLoadingContent* aContent, imgIRequest** aRequest) {
5495  if (aRequest) {
5496    *aRequest = nullptr;
5497  }
5498 
5499  NS_ENSURE_TRUE(aContent, nullptr)do { if ((__builtin_expect(!!(!(aContent)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aContent" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5499); return
 nullptr; } } while (false);
5500 
5501  nsCOMPtr<imgIRequest> imgRequest;
5502  aContent->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
5503                       getter_AddRefs(imgRequest));
5504  if (!imgRequest) {
5505    return nullptr;
5506  }
5507 
5508  nsCOMPtr<imgIContainer> imgContainer;
5509  imgRequest->GetImage(getter_AddRefs(imgContainer));
5510 
5511  if (!imgContainer) {
5512    return nullptr;
5513  }
5514 
5515  if (aRequest) {
5516    // If the consumer wants the request, verify it has actually loaded
5517    // successfully.
5518    uint32_t imgStatus;
5519    imgRequest->GetImageStatus(&imgStatus);
5520    if (imgStatus & imgIRequest::STATUS_FRAME_COMPLETE &&
5521        !(imgStatus & imgIRequest::STATUS_ERROR)) {
5522      imgRequest.swap(*aRequest);
5523    }
5524  }
5525 
5526  return imgContainer.forget();
5527}
5528 
5529static bool IsLinkWithURI(const nsIContent& aContent) {
5530  const auto* element = Element::FromNode(aContent);
5531  if (!element || !element->IsLink()) {
5532    return false;
5533  }
5534  nsCOMPtr<nsIURI> absURI = element->GetHrefURI();
5535  return !!absURI;
5536}
5537 
5538static bool HasImageRequest(nsIContent& aContent) {
5539  nsCOMPtr<nsIImageLoadingContent> imageContent(do_QueryInterface(&aContent));
5540  if (!imageContent) {
5541    return false;
5542  }
5543 
5544  nsCOMPtr<imgIRequest> imgRequest;
5545  imageContent->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
5546                           getter_AddRefs(imgRequest));
5547 
5548  // XXXbz It may be draggable even if the request resulted in an error.  Why?
5549  // Not sure; that's what the old nsContentAreaDragDrop/nsFrame code did.
5550  return !!imgRequest;
5551}
5552 
5553static Maybe<bool> DraggableOverride(const nsIContent& aContent) {
5554  if (auto* el = nsGenericHTMLElement::FromNode(aContent)) {
5555    if (el->Draggable()) {
5556      return Some(true);
5557    }
5558 
5559    if (el->AttrValueIs(kNameSpaceID_None, nsGkAtoms::draggable,
5560                        nsGkAtoms::_false, eIgnoreCase)) {
5561      return Some(false);
5562    }
5563  }
5564  if (aContent.IsSVGElement()) {
5565    return Some(false);
5566  }
5567  return Nothing();
5568}
5569 
5570// static
5571bool nsContentUtils::ContentIsDraggable(nsIContent* aContent) {
5572  MOZ_ASSERT(aContent)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aContent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aContent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aContent", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5572); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContent" ")"
); do { MOZ_CrashSequence(__null, 5572); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
5573 
5574  if (auto draggable = DraggableOverride(*aContent)) {
5575    return *draggable;
5576  }
5577 
5578  // special handling for content area image and link dragging
5579  return HasImageRequest(*aContent) || IsLinkWithURI(*aContent);
5580}
5581 
5582// static
5583bool nsContentUtils::IsDraggableImage(nsIContent* aContent) {
5584  MOZ_ASSERT(aContent)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aContent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aContent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aContent", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5584); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContent" ")"
); do { MOZ_CrashSequence(__null, 5584); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
5585  return HasImageRequest(*aContent) &&
5586         DraggableOverride(*aContent).valueOr(true);
5587}
5588 
5589// static
5590bool nsContentUtils::IsDraggableLink(const nsIContent* aContent) {
5591  MOZ_ASSERT(aContent)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aContent)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aContent))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aContent", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5591); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aContent" ")"
); do { MOZ_CrashSequence(__null, 5591); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
5592  return IsLinkWithURI(*aContent) && DraggableOverride(*aContent).valueOr(true);
5593}
5594 
5595// static
5596nsresult nsContentUtils::QNameChanged(mozilla::dom::NodeInfo* aNodeInfo,
5597                                      nsAtom* aName,
5598                                      mozilla::dom::NodeInfo** aResult) {
5599  nsNodeInfoManager* niMgr = aNodeInfo->NodeInfoManager();
5600 
5601  *aResult = niMgr
5602                 ->GetNodeInfo(aName, nullptr, aNodeInfo->NamespaceID(),
5603                               aNodeInfo->NodeType(), aNodeInfo->GetExtraName())
5604                 .take();
5605  return NS_OK;
5606}
5607 
5608static bool TestSitePerm(nsIPrincipal* aPrincipal, const nsACString& aType,
5609                         uint32_t aPerm, bool aExactHostMatch) {
5610  if (!aPrincipal) {
5611    // We always deny (i.e. don't allow) the permission if we don't have a
5612    // principal.
5613    return aPerm != nsIPermissionManager::ALLOW_ACTION;
5614  }
5615 
5616  nsCOMPtr<nsIPermissionManager> permMgr =
5617      components::PermissionManager::Service();
5618  NS_ENSURE_TRUE(permMgr, false)do { if ((__builtin_expect(!!(!(permMgr)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "permMgr" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5618); return
 false; } } while (false);
5619 
5620  uint32_t perm;
5621  nsresult rv;
5622  if (aExactHostMatch) {
5623    rv = permMgr->TestExactPermissionFromPrincipal(aPrincipal, aType, &perm);
5624  } else {
5625    rv = permMgr->TestPermissionFromPrincipal(aPrincipal, aType, &perm);
5626  }
5627  NS_ENSURE_SUCCESS(rv, false)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "false", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5627); return false; } } while (false);
5628 
5629  return perm == aPerm;
5630}
5631 
5632bool nsContentUtils::IsSitePermAllow(nsIPrincipal* aPrincipal,
5633                                     const nsACString& aType) {
5634  return TestSitePerm(aPrincipal, aType, nsIPermissionManager::ALLOW_ACTION,
5635                      false);
5636}
5637 
5638bool nsContentUtils::IsSitePermDeny(nsIPrincipal* aPrincipal,
5639                                    const nsACString& aType) {
5640  return TestSitePerm(aPrincipal, aType, nsIPermissionManager::DENY_ACTION,
5641                      false);
5642}
5643 
5644bool nsContentUtils::IsExactSitePermAllow(nsIPrincipal* aPrincipal,
5645                                          const nsACString& aType) {
5646  return TestSitePerm(aPrincipal, aType, nsIPermissionManager::ALLOW_ACTION,
5647                      true);
5648}
5649 
5650bool nsContentUtils::IsExactSitePermDeny(nsIPrincipal* aPrincipal,
5651                                         const nsACString& aType) {
5652  return TestSitePerm(aPrincipal, aType, nsIPermissionManager::DENY_ACTION,
5653                      true);
5654}
5655 
5656bool nsContentUtils::HasSitePerm(nsIPrincipal* aPrincipal,
5657                                 const nsACString& aType) {
5658  if (!aPrincipal) {
5659    return false;
5660  }
5661 
5662  nsCOMPtr<nsIPermissionManager> permMgr =
5663      components::PermissionManager::Service();
5664  NS_ENSURE_TRUE(permMgr, false)do { if ((__builtin_expect(!!(!(permMgr)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "permMgr" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5664); return
 false; } } while (false);
5665 
5666  uint32_t perm;
5667  nsresult rv = permMgr->TestPermissionFromPrincipal(aPrincipal, aType, &perm);
5668  NS_ENSURE_SUCCESS(rv, false)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "false", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5668); return false; } } while (false);
5669 
5670  return perm != nsIPermissionManager::UNKNOWN_ACTION;
5671}
5672 
5673static const char* gEventNames[] = {"event"};
5674static const char* gSVGEventNames[] = {"evt"};
5675// for b/w compat, the first name to onerror is still 'event', even though it
5676// is actually the error message
5677static const char* gOnErrorNames[] = {"event", "source", "lineno", "colno",
5678                                      "error"};
5679 
5680// static
5681void nsContentUtils::GetEventArgNames(int32_t aNameSpaceID, nsAtom* aEventName,
5682                                      bool aIsForWindow, uint32_t* aArgCount,
5683                                      const char*** aArgArray) {
5684#define SET_EVENT_ARG_NAMES(names)*aArgCount = sizeof(names) / sizeof(names[0]); *aArgArray = names
;               \
5685  *aArgCount = sizeof(names) / sizeof(names[0]); \
5686  *aArgArray = names;
5687 
5688  // JSEventHandler is what does the arg magic for onerror, and it does
5689  // not seem to take the namespace into account.  So we let onerror in all
5690  // namespaces get the 3 arg names.
5691  if (aEventName == nsGkAtoms::onerror && aIsForWindow) {
5692    SET_EVENT_ARG_NAMES(gOnErrorNames)*aArgCount = sizeof(gOnErrorNames) / sizeof(gOnErrorNames[0])
; *aArgArray = gOnErrorNames;;
5693  } else if (aNameSpaceID == kNameSpaceID_SVG9) {
5694    SET_EVENT_ARG_NAMES(gSVGEventNames)*aArgCount = sizeof(gSVGEventNames) / sizeof(gSVGEventNames[0
]); *aArgArray = gSVGEventNames;;
5695  } else {
5696    SET_EVENT_ARG_NAMES(gEventNames)*aArgCount = sizeof(gEventNames) / sizeof(gEventNames[0]); *aArgArray
 = gEventNames;;
5697  }
5698}
5699 
5700// Note: The list of content bundles in nsStringBundle.cpp should be updated
5701// whenever entries are added or removed from this list.
5702static const char* gPropertiesFiles[kPropertiesFileCount] = {
5703    // Must line up with the enum values in |PropertiesFile| enum.
5704    "chrome://global/locale/css.properties",
5705    "chrome://global/locale/xul.properties",
5706    "chrome://global/locale/layout_errors.properties",
5707    "chrome://global/locale/layout/HtmlForm.properties",
5708    "chrome://global/locale/printing.properties",
5709    "chrome://global/locale/dom/dom.properties",
5710    "chrome://global/locale/layout/htmlparser.properties",
5711    "chrome://global/locale/svg/svg.properties",
5712    "chrome://branding/locale/brand.properties",
5713    "chrome://global/locale/commonDialogs.properties",
5714    "chrome://global/locale/mathml/mathml.properties",
5715    "chrome://global/locale/security/security.properties",
5716    "chrome://necko/locale/necko.properties",
5717    "resource://gre/res/locale/layout/HtmlForm.properties",
5718    "resource://gre/res/locale/dom/dom.properties",
5719    "resource://gre/res/locale/necko/necko.properties",
5720};
5721 
5722/* static */
5723nsresult nsContentUtils::EnsureStringBundle(PropertiesFile aFile) {
5724  MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
 " (" "Should not create bundles off main thread." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5725); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "NS_IsMainThread()"
 ") (" "Should not create bundles off main thread." ")"); do {
 MOZ_CrashSequence(__null, 5725); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false)
5725                        "Should not create bundles off main thread.")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
 " (" "Should not create bundles off main thread." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5725); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "NS_IsMainThread()"
 ") (" "Should not create bundles off main thread." ")"); do {
 MOZ_CrashSequence(__null, 5725); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false);
5726  if (!sStringBundles[size_t(aFile)]) {
5727    if (!sStringBundleService) {
5728      nsresult rv =
5729          CallGetService(NS_STRINGBUNDLE_CONTRACTID"@mozilla.org/intl/stringbundle;1", &sStringBundleService);
5730      NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5730); return rv; } } while (false);
5731    }
5732    RefPtr<nsIStringBundle> bundle;
5733    MOZ_TRY(sStringBundleService->CreateBundle(gPropertiesFiles[size_t(aFile)],__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult
(sStringBundleService->CreateBundle(gPropertiesFiles[size_t
(aFile)], getter_AddRefs(bundle))); if ((__builtin_expect(!!(
mozTryVarTempResult.isErr()), 0))) { return mozTryVarTempResult
.propagateErr(); } mozTryVarTempResult.unwrap(); })
5734                                               getter_AddRefs(bundle)))__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult
(sStringBundleService->CreateBundle(gPropertiesFiles[size_t
(aFile)], getter_AddRefs(bundle))); if ((__builtin_expect(!!(
mozTryVarTempResult.isErr()), 0))) { return mozTryVarTempResult
.propagateErr(); } mozTryVarTempResult.unwrap(); });
5735    sStringBundles[size_t(aFile)] = bundle.forget();
5736  }
5737  return NS_OK;
5738}
5739 
5740/* static */
5741void nsContentUtils::AsyncPrecreateStringBundles() {
5742  // We only ever want to pre-create bundles in the parent process.
5743  //
5744  // All nsContentUtils bundles are shared between the parent and child
5745  // precesses, and the shared memory regions that back them *must* be created
5746  // in the parent, and then sent to all children.
5747  //
5748  // If we attempt to create a bundle in the child before its memory region is
5749  // available, we need to create a temporary non-shared bundle, and later
5750  // replace that with the shared memory copy. So attempting to pre-load in the
5751  // child is wasteful and unnecessary.
5752  MOZ_ASSERT(XRE_IsParentProcess())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(XRE_IsParentProcess())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(XRE_IsParentProcess()))), 0)
)) { do { } while (false); MOZ_ReportAssertionFailure("XRE_IsParentProcess()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5752); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "XRE_IsParentProcess()" ")"); do { MOZ_CrashSequence
(__null, 5752); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
5753 
5754  for (size_t bundleIndex = 0; bundleIndex < kPropertiesFileCount;
5755       ++bundleIndex) {
5756    nsresult rv = NS_DispatchToCurrentThreadQueue(
5757        NS_NewRunnableFunction("AsyncPrecreateStringBundles",
5758                               [bundleIndex]() {
5759                                 PropertiesFile file =
5760                                     static_cast<PropertiesFile>(bundleIndex);
5761                                 EnsureStringBundle(file);
5762                                 nsIStringBundle* bundle =
5763                                     sStringBundles[size_t(file)];
5764                                 bundle->AsyncPreload();
5765                               }),
5766        EventQueuePriority::Idle);
5767    (void)NS_WARN_IF(NS_FAILED(rv))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(rv
)), 0))), "NS_FAILED(rv)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5767);
5768  }
5769}
5770 
5771static PropertiesFile GetMaybeSpoofedPropertiesFile(PropertiesFile aFile,
5772                                                    const char* aKey,
5773                                                    const Document* aDocument) {
5774  // When we spoof English, use en-US properties in strings that are accessible
5775  // by content.
5776  bool spoofLocale = nsContentUtils::ShouldResistFingerprinting(
5777      aDocument, RFPTarget::JSLocale);
5778  if (spoofLocale) {
5779    switch (aFile) {
5780      case PropertiesFile::FORMS_PROPERTIES:
5781        return PropertiesFile::FORMS_PROPERTIES_en_US;
5782      case PropertiesFile::DOM_PROPERTIES:
5783        return PropertiesFile::DOM_PROPERTIES_en_US;
5784      default:
5785        break;
5786    }
5787  }
5788  return aFile;
5789}
5790 
5791/* static */
5792nsresult nsContentUtils::GetMaybeLocalizedString(PropertiesFile aFile,
5793                                                 const char* aKey,
5794                                                 const Document* aDocument,
5795                                                 nsAString& aResult) {
5796  return GetLocalizedString(
5797      GetMaybeSpoofedPropertiesFile(aFile, aKey, aDocument), aKey, aResult);
5798}
5799 
5800/* static */
5801nsresult nsContentUtils::GetLocalizedString(PropertiesFile aFile,
5802                                            const char* aKey,
5803                                            nsAString& aResult) {
5804  return FormatLocalizedString(aFile, aKey, {}, aResult);
5805}
5806 
5807/* static */
5808nsresult nsContentUtils::FormatMaybeLocalizedString(
5809    PropertiesFile aFile, const char* aKey, Document* aDocument,
5810    const nsTArray<nsString>& aParams, nsAString& aResult) {
5811  return FormatLocalizedString(
5812      GetMaybeSpoofedPropertiesFile(aFile, aKey, aDocument), aKey, aParams,
5813      aResult);
5814}
5815 
5816class FormatLocalizedStringRunnable final : public WorkerMainThreadRunnable {
5817 public:
5818  FormatLocalizedStringRunnable(WorkerPrivate* aWorkerPrivate,
5819                                PropertiesFile aFile, const char* aKey,
5820                                const nsTArray<nsString>& aParams,
5821                                nsAString& aLocalizedString)
5822      : WorkerMainThreadRunnable(aWorkerPrivate,
5823                                 "FormatLocalizedStringRunnable"_ns),
5824        mFile(aFile),
5825        mKey(aKey),
5826        mParams(aParams),
5827        mLocalizedString(aLocalizedString) {
5828    MOZ_ASSERT(aWorkerPrivate)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aWorkerPrivate)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aWorkerPrivate))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("aWorkerPrivate"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 5828); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aWorkerPrivate" ")"); do { MOZ_CrashSequence
(__null, 5828); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
5829    aWorkerPrivate->AssertIsOnWorkerThread();
5830  }
5831 
5832  bool MainThreadRun() override {
5833    AssertIsOnMainThread();
5834 
5835    mResult = nsContentUtils::FormatLocalizedString(mFile, mKey, mParams,
5836                                                    mLocalizedString);
5837    (void)NS_WARN_IF(NS_FAILED(mResult))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(mResult
)), 0))), "NS_FAILED(mResult)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5837);
5838    return true;
5839  }
5840 
5841  nsresult GetResult() const { return mResult; }
5842 
5843 private:
5844  const PropertiesFile mFile;
5845  const char* mKey;
5846  const nsTArray<nsString>& mParams;
5847  nsresult mResult = NS_ERROR_FAILURE;
5848  nsAString& mLocalizedString;
5849};
5850 
5851/* static */
5852nsresult nsContentUtils::FormatLocalizedString(
5853    PropertiesFile aFile, const char* aKey, const nsTArray<nsString>& aParams,
5854    nsAString& aResult) {
5855  if (!NS_IsMainThread()) {
5856    // nsIStringBundle is thread-safe but its creation is not, and in particular
5857    // we don't create and store nsIStringBundle objects in a thread-safe way.
5858    //
5859    // TODO(emilio): Maybe if we already have the right bundle created we could
5860    // just call into it, but we should make sure that Shutdown() doesn't get
5861    // called on the main thread when that happens which is a bit tricky to
5862    // prove?
5863    WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
5864    if (NS_WARN_IF(!workerPrivate)NS_warn_if_impl(!workerPrivate, "!workerPrivate", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5864)) {
5865      return NS_ERROR_UNEXPECTED;
5866    }
5867 
5868    auto runnable = MakeRefPtr<FormatLocalizedStringRunnable>(
5869        workerPrivate, aFile, aKey, aParams, aResult);
5870 
5871    runnable->Dispatch(workerPrivate, Canceling, IgnoreErrors());
5872    return runnable->GetResult();
5873  }
5874 
5875  MOZ_TRY(EnsureStringBundle(aFile))__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult
(EnsureStringBundle(aFile)); if ((__builtin_expect(!!(mozTryVarTempResult
.isErr()), 0))) { return mozTryVarTempResult.propagateErr(); }
 mozTryVarTempResult.unwrap(); });
5876  nsIStringBundle* bundle = sStringBundles[size_t(aFile)];
5877  if (aParams.IsEmpty()) {
5878    return bundle->GetStringFromName(aKey, aResult);
5879  }
5880  return bundle->FormatStringFromName(aKey, aParams, aResult);
5881}
5882 
5883/* static */
5884void nsContentUtils::LogSimpleConsoleError(const nsAString& aErrorText,
5885                                           const nsACString& aCategory,
5886                                           bool aFromPrivateWindow,
5887                                           bool aFromChromeContext,
5888                                           uint32_t aErrorFlags) {
5889  nsCOMPtr<nsIScriptError> scriptError =
5890      do_CreateInstance(NS_SCRIPTERROR_CONTRACTID"@mozilla.org/scripterror;1");
5891  if (scriptError) {
5892    nsCOMPtr<nsIConsoleService> console =
5893        do_GetService(NS_CONSOLESERVICE_CONTRACTID"@mozilla.org/consoleservice;1");
5894    if (console && NS_SUCCEEDED(scriptError->Init(((bool)(__builtin_expect(!!(!NS_FAILED_impl(scriptError->Init
( aErrorText, ""_ns, 0, 0, aErrorFlags, aCategory, aFromPrivateWindow
, aFromChromeContext))), 1)))
5895                       aErrorText, ""_ns, 0, 0, aErrorFlags, aCategory,((bool)(__builtin_expect(!!(!NS_FAILED_impl(scriptError->Init
( aErrorText, ""_ns, 0, 0, aErrorFlags, aCategory, aFromPrivateWindow
, aFromChromeContext))), 1)))
5896                       aFromPrivateWindow, aFromChromeContext))((bool)(__builtin_expect(!!(!NS_FAILED_impl(scriptError->Init
( aErrorText, ""_ns, 0, 0, aErrorFlags, aCategory, aFromPrivateWindow
, aFromChromeContext))), 1)))) {
5897      console->LogMessage(scriptError);
5898    }
5899  }
5900}
5901 
5902/* static */
5903nsresult nsContentUtils::ReportToConsole(
5904    uint32_t aErrorFlags, const nsACString& aCategory,
5905    const Document* aDocument, PropertiesFile aFile, const char* aMessageName,
5906    const nsTArray<nsString>& aParams, const SourceLocation& aLoc) {
5907  nsresult rv;
5908  nsAutoString errorText;
5909  if (!aParams.IsEmpty()) {
5910    rv = FormatLocalizedString(aFile, aMessageName, aParams, errorText);
5911  } else {
5912    rv = GetLocalizedString(aFile, aMessageName, errorText);
5913  }
5914  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5914); return rv; } } while (false);
5915  return ReportToConsoleNonLocalized(errorText, aErrorFlags, aCategory,
5916                                     aDocument, aLoc);
5917}
5918 
5919/* static */
5920void nsContentUtils::ReportEmptyGetElementByIdArg(const Document* aDoc) {
5921  ReportToConsole(nsIScriptError::warningFlag, "DOM"_ns, aDoc,
5922                  PropertiesFile::DOM_PROPERTIES, "EmptyGetElementByIdParam");
5923}
5924 
5925/* static */
5926nsresult nsContentUtils::ReportToConsoleNonLocalized(
5927    const nsAString& aErrorText, uint32_t aErrorFlags,
5928    const nsACString& aCategory, const Document* aDocument,
5929    const SourceLocation& aLoc) {
5930  uint64_t innerWindowID = aDocument ? aDocument->InnerWindowID() : 0;
5931  if (aLoc || !aDocument || !aDocument->GetDocumentURI()) {
5932    return ReportToConsoleByWindowID(aErrorText, aErrorFlags, aCategory,
5933                                     innerWindowID, aLoc);
5934  }
5935  return ReportToConsoleByWindowID(aErrorText, aErrorFlags, aCategory,
5936                                   innerWindowID,
5937                                   SourceLocation(aDocument->GetDocumentURI()));
5938}
5939 
5940/* static */
5941nsresult nsContentUtils::ReportToConsoleByWindowID(
5942    const nsAString& aErrorText, uint32_t aErrorFlags,
5943    const nsACString& aCategory, uint64_t aInnerWindowID,
5944    const SourceLocation& aLocation) {
5945  nsresult rv;
5946  if (!sConsoleService) {  // only need to bother null-checking here
5947    rv = CallGetService(NS_CONSOLESERVICE_CONTRACTID"@mozilla.org/consoleservice;1", &sConsoleService);
5948    NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5948); return rv; } } while (false);
5949  }
5950 
5951  nsCOMPtr<nsIScriptError> errorObject =
5952      do_CreateInstance(NS_SCRIPTERROR_CONTRACTID"@mozilla.org/scripterror;1", &rv);
5953  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5953); return rv; } } while (false);
5954 
5955  if (aLocation.mResource.is<nsCOMPtr<nsIURI>>()) {
5956    nsIURI* uri = aLocation.mResource.as<nsCOMPtr<nsIURI>>();
5957    rv = errorObject->InitWithSourceURI(aErrorText, uri, aLocation.mLine,
5958                                        aLocation.mColumn, aErrorFlags,
5959                                        aCategory, aInnerWindowID);
5960  } else {
5961    rv = errorObject->InitWithWindowID(
5962        aErrorText, aLocation.mResource.as<nsCString>(), aLocation.mLine,
5963        aLocation.mColumn, aErrorFlags, aCategory, aInnerWindowID);
5964  }
5965  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5965); return rv; } } while (false);
5966 
5967  return sConsoleService->LogMessage(errorObject);
5968}
5969 
5970namespace {
5971 
5972#define DEPRECATED_OPERATION(_op) #_op,
5973static const char* kDeprecatedOperations[] = {
5974#include "nsDeprecatedOperationList.inc"
5975    nullptr};
5976#undef DEPRECATED_OPERATION
5977 
5978}  // anonymous namespace
5979 
5980/* static */
5981void nsContentUtils::ReportDeprecation(
5982    nsIGlobalObject* aGlobal, const Document* aDoc, nsIURI* aURI,
5983    DeprecatedOperations aOperation,
5984    const mozilla::JSCallingLocation& aLocation) {
5985  MOZ_ASSERT(aGlobal)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aGlobal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aGlobal))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aGlobal", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5985); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aGlobal" ")"
); do { MOZ_CrashSequence(__null, 5985); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
5986  MOZ_ASSERT(aURI)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aURI)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(aURI))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("aURI", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 5986); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aURI" ")");
 do { MOZ_CrashSequence(__null, 5986); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
5987 
5988  nsAutoCString url;
5989  ReportingUtils::StripURL(aURI, url);
5990 
5991  const char* operation =
5992      kDeprecatedOperations[static_cast<size_t>(aOperation)];
5993  nsAutoString type;
5994  type.AppendASCII(operation);
5995 
5996  nsAutoCString key;
5997  key.AssignLiteral(operation, strlen(operation));
5998  key.AppendLiteral("Warning");
5999 
6000  // XXX do we really want the localized string for deprecation report?
6001  nsAutoString msg;
6002  nsresult rv = nsContentUtils::GetMaybeLocalizedString(
6003      PropertiesFile::DOM_PROPERTIES, key.get(), aDoc, msg);
6004  if (NS_WARN_IF(NS_FAILED(rv))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(rv
)), 0))), "NS_FAILED(rv)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6004)) {
6005    return;
6006  }
6007 
6008  Nullable<uint32_t> lineNumber;
6009  Nullable<uint32_t> columnNumber;
6010  nsAutoCString sourceFile;
6011  if (aLocation) {
6012    lineNumber.SetValue(aLocation.mLine);
6013    columnNumber.SetValue(aLocation.mColumn);
6014    ReportingUtils::StripLocationFileName(aLocation, sourceFile);
6015  }
6016 
6017  RefPtr<DeprecationReportBody> body =
6018      new DeprecationReportBody(aGlobal, type, nullptr /* date */, msg,
6019                                sourceFile, lineNumber, columnNumber);
6020 
6021  ReportingUtils::Report(aGlobal, nsGkAtoms::deprecation, u"default"_ns,
6022                         NS_ConvertUTF8toUTF16(url), body);
6023}
6024 
6025void nsContentUtils::LogMessageToConsole(const char* aMsg) {
6026  if (!sConsoleService) {  // only need to bother null-checking here
6027    CallGetService(NS_CONSOLESERVICE_CONTRACTID"@mozilla.org/consoleservice;1", &sConsoleService);
6028    if (!sConsoleService) {
6029      return;
6030    }
6031  }
6032  sConsoleService->LogStringMessage(NS_ConvertUTF8toUTF16(aMsg).get());
6033}
6034 
6035bool nsContentUtils::IsChromeDoc(const Document* aDocument) {
6036  return aDocument && aDocument->NodePrincipal() == sSystemPrincipal;
6037}
6038 
6039bool nsContentUtils::IsAddonDoc(const Document* aDocument) {
6040  return aDocument &&
6041         aDocument->NodePrincipal()->GetIsAddonOrExpandedAddonPrincipal();
6042}
6043 
6044bool nsContentUtils::IsChildOfSameType(Document* aDoc) {
6045  if (BrowsingContext* bc = aDoc->GetBrowsingContext()) {
6046    return bc->GetParent();
6047  }
6048  return false;
6049}
6050 
6051static bool IsJSONType(const nsACString& aContentType) {
6052  return aContentType.EqualsLiteral(TEXT_JSON"text/json") ||
6053         aContentType.EqualsLiteral(APPLICATION_JSON"application/json");
6054}
6055 
6056static bool IsNonPlainTextType(const nsACString& aContentType) {
6057  // MIME type suffixes which should not be plain text.
6058  static constexpr std::string_view kNonPlainTextTypes[] = {
6059      "html",
6060      "xml",
6061      "xsl",
6062      "calendar",
6063      "x-calendar",
6064      "x-vcalendar",
6065      "vcalendar",
6066      "vcard",
6067      "x-vcard",
6068      "directory",
6069      "ldif",
6070      "qif",
6071      "x-qif",
6072      "x-csv",
6073      "x-vcf",
6074      "rtf",
6075      "comma-separated-values",
6076      "csv",
6077      "tab-separated-values",
6078      "tsv",
6079      "ofx",
6080      "vnd.sun.j2me.app-descriptor",
6081      "x-ms-iqy",
6082      "x-ms-odc",
6083      "x-ms-rqy",
6084      "x-ms-contact"};
6085 
6086  // Trim off the "text/" prefix for comparison.
6087  MOZ_ASSERT(StringBeginsWith(aContentType, "text/"_ns))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(StringBeginsWith(aContentType, "text/"_ns))>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(StringBeginsWith(aContentType, "text/"_ns)))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("StringBeginsWith(aContentType, \"text/\"_ns)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6087); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "StringBeginsWith(aContentType, \"text/\"_ns)"
 ")"); do { MOZ_CrashSequence(__null, 6087); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6088  std::string_view suffix = aContentType;
6089  suffix.remove_prefix(5);
6090 
6091  for (std::string_view type : kNonPlainTextTypes) {
6092    if (type == suffix) {
6093      return true;
6094    }
6095  }
6096  return false;
6097}
6098 
6099bool nsContentUtils::IsPlainTextType(const nsACString& aContentType) {
6100  // All `text/*`, any JSON type and any JavaScript type are considered "plain
6101  // text" types for the purposes of how to render them as a document.
6102  return (StringBeginsWith(aContentType, "text/"_ns) &&
6103          !IsNonPlainTextType(aContentType)) ||
6104         IsJSONType(aContentType) || IsJavascriptMIMEType(aContentType);
6105}
6106 
6107bool nsContentUtils::IsUtf8OnlyPlainTextType(const nsACString& aContentType) {
6108  // NOTE: This must be a subset of the list in IsPlainTextType().
6109  return IsJSONType(aContentType) ||
6110         aContentType.EqualsLiteral(TEXT_CACHE_MANIFEST"text/cache-manifest") ||
6111         aContentType.EqualsLiteral(TEXT_VTT"text/vtt");
6112}
6113 
6114bool nsContentUtils::IsInChromeDocshell(const Document* aDocument) {
6115  return aDocument && aDocument->IsInChromeDocShell();
6116}
6117 
6118// static
6119nsIContentPolicy* nsContentUtils::GetContentPolicy() {
6120  if (!sTriedToGetContentPolicy) {
6121    CallGetService(NS_CONTENTPOLICY_CONTRACTID"@mozilla.org/layout/content-policy;1", &sContentPolicyService);
6122    // It's OK to not have a content policy service
6123    sTriedToGetContentPolicy = true;
6124  }
6125 
6126  return sContentPolicyService;
6127}
6128 
6129// static
6130bool nsContentUtils::IsEventAttributeName(nsAtom* aName, int32_t aType) {
6131  const char16_t* name = aName->GetUTF16String();
6132  if (name[0] != 'o' || name[1] != 'n') {
6133    return false;
6134  }
6135 
6136  EventNameMapping mapping;
6137  return (sAtomEventTable->Get(aName, &mapping) && mapping.mType & aType);
6138}
6139 
6140// static
6141EventMessage nsContentUtils::GetEventMessage(nsAtom* aName) {
6142  MOZ_ASSERT(NS_IsMainThread(), "sAtomEventTable is not threadsafe")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
 " (" "sAtomEventTable is not threadsafe" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6142); AnnotateMozCrashReason("MOZ_ASSERT" "(" "NS_IsMainThread()"
 ") (" "sAtomEventTable is not threadsafe" ")"); do { MOZ_CrashSequence
(__null, 6142); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6143  if (aName) {
6144    EventNameMapping mapping;
6145    if (sAtomEventTable->Get(aName, &mapping)) {
6146      return mapping.mMessage;
6147    }
6148  }
6149 
6150  return eUnidentifiedEvent;
6151}
6152 
6153// static
6154void nsContentUtils::ForEachEventAttributeName(
6155    int32_t aType, const FunctionRef<void(nsAtom*)> aFunc) {
6156  for (auto iter = sAtomEventTable->ConstIter(); !iter.Done(); iter.Next()) {
6157    if (iter.Data().mType & aType) {
6158      aFunc(iter.Key());
6159    }
6160  }
6161}
6162 
6163// static
6164mozilla::EventClassID nsContentUtils::GetEventClassID(const nsAString& aName) {
6165  EventNameMapping mapping;
6166  if (sStringEventTable->Get(aName, &mapping)) return mapping.mEventClassID;
6167 
6168  return eBasicEventClass;
6169}
6170 
6171nsAtom* nsContentUtils::GetEventMessageAndAtom(
6172    const nsAString& aName, mozilla::EventClassID aEventClassID,
6173    EventMessage* aEventMessage) {
6174  MOZ_ASSERT(NS_IsMainThread(), "Our hashtables are not threadsafe")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
 " (" "Our hashtables are not threadsafe" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6174); AnnotateMozCrashReason("MOZ_ASSERT" "(" "NS_IsMainThread()"
 ") (" "Our hashtables are not threadsafe" ")"); do { MOZ_CrashSequence
(__null, 6174); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6175  EventNameMapping mapping;
6176  if (sStringEventTable->Get(aName, &mapping)) {
6177    *aEventMessage = mapping.mEventClassID == aEventClassID
6178                         ? mapping.mMessage
6179                         : eUnidentifiedEvent;
6180    return mapping.mAtom;
6181  }
6182 
6183  // If we have cached lots of user defined event names, clear some of them.
6184  if (sUserDefinedEvents->Length() > 127) {
6185    while (sUserDefinedEvents->Length() > 64) {
6186      nsAtom* first = sUserDefinedEvents->ElementAt(0);
6187      sStringEventTable->Remove(Substring(nsDependentAtomString(first), 2));
6188      sUserDefinedEvents->RemoveElementAt(0);
6189    }
6190  }
6191 
6192  *aEventMessage = eUnidentifiedEvent;
6193  RefPtr<nsAtom> atom = NS_AtomizeMainThread(u"on"_ns + aName);
6194  sUserDefinedEvents->AppendElement(atom);
6195  mapping.mAtom = atom;
6196  mapping.mMessage = eUnidentifiedEvent;
6197  mapping.mType = EventNameType_None;
6198  mapping.mEventClassID = eBasicEventClass;
6199  sStringEventTable->InsertOrUpdate(aName, mapping);
6200  return mapping.mAtom;
6201}
6202 
6203// static
6204EventMessage nsContentUtils::GetEventMessageAndAtomForListener(
6205    const nsAString& aName, nsAtom** aOnName) {
6206  MOZ_ASSERT(NS_IsMainThread(), "Our hashtables are not threadsafe")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
 " (" "Our hashtables are not threadsafe" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6206); AnnotateMozCrashReason("MOZ_ASSERT" "(" "NS_IsMainThread()"
 ") (" "Our hashtables are not threadsafe" ")"); do { MOZ_CrashSequence
(__null, 6206); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6207 
6208  // Check sStringEventTable for a matching entry. This will only fail for
6209  // user-defined event types.
6210  EventNameMapping mapping;
6211  if (sStringEventTable->Get(aName, &mapping)) {
6212    RefPtr<nsAtom> atom = mapping.mAtom;
6213    atom.forget(aOnName);
6214    return mapping.mMessage;
6215  }
6216 
6217  // sStringEventTable did not contain an entry for this event type string.
6218  // Call GetEventMessageAndAtom, which will create an event type atom and
6219  // cache it in sStringEventTable for future calls.
6220  EventMessage msg = eUnidentifiedEvent;
6221  RefPtr<nsAtom> atom = GetEventMessageAndAtom(aName, eBasicEventClass, &msg);
6222  atom.forget(aOnName);
6223  return msg;
6224}
6225 
6226static already_AddRefed<Event> GetEventWithTarget(
6227    Document* aDoc, EventTarget* aTarget, const nsAString& aEventName,
6228    CanBubble aCanBubble, Cancelable aCancelable, Composed aComposed,
6229    Trusted aTrusted, ErrorResult& aErrorResult) {
6230  RefPtr<Event> event =
6231      aDoc->CreateEvent(u"Events"_ns, CallerType::System, aErrorResult);
6232  if (aErrorResult.Failed()) {
6233    return nullptr;
6234  }
6235 
6236  event->InitEvent(aEventName, aCanBubble, aCancelable, aComposed);
6237  event->SetTrusted(aTrusted == Trusted::eYes);
6238 
6239  event->SetTarget(aTarget);
6240 
6241  return event.forget();
6242}
6243 
6244// static
6245nsIContent* nsContentUtils::GetEventTargetContent(
6246    nsIContent* aExplicitEventTargetContent, const WidgetEvent* aEvent) {
6247  if (!aExplicitEventTargetContent ||
6248      aExplicitEventTargetContent->IsElement() || !aEvent ||
6249      !IsForbiddenDispatchingToNonElementContent(aEvent->mMessage)) {
6250    return aExplicitEventTargetContent;
6251  }
6252  Element* const ancestorElement =
6253      aExplicitEventTargetContent->GetInclusiveFlattenedTreeAncestorElement();
6254  return ancestorElement ? ancestorElement : aExplicitEventTargetContent;
6255}
6256 
6257// static
6258nsresult nsContentUtils::DispatchTrustedEvent(
6259    Document* aDoc, EventTarget* aTarget, const nsAString& aEventName,
6260    CanBubble aCanBubble, Cancelable aCancelable, Composed aComposed,
6261    bool* aDefaultAction, SystemGroupOnly aSystemGroupOnly) {
6262  MOZ_ASSERT(!aEventName.EqualsLiteral("input") &&do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aEventName.EqualsLiteral("input") && !aEventName
.EqualsLiteral("beforeinput"))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aEventName.EqualsLiteral("input"
) && !aEventName.EqualsLiteral("beforeinput")))), 0))
) { do { } while (false); MOZ_ReportAssertionFailure("!aEventName.EqualsLiteral(\"input\") && !aEventName.EqualsLiteral(\"beforeinput\")"
 " (" "Use DispatchInputEvent() instead" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6264); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aEventName.EqualsLiteral(\"input\") && !aEventName.EqualsLiteral(\"beforeinput\")"
 ") (" "Use DispatchInputEvent() instead" ")"); do { MOZ_CrashSequence
(__null, 6264); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
6263                 !aEventName.EqualsLiteral("beforeinput"),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aEventName.EqualsLiteral("input") && !aEventName
.EqualsLiteral("beforeinput"))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aEventName.EqualsLiteral("input"
) && !aEventName.EqualsLiteral("beforeinput")))), 0))
) { do { } while (false); MOZ_ReportAssertionFailure("!aEventName.EqualsLiteral(\"input\") && !aEventName.EqualsLiteral(\"beforeinput\")"
 " (" "Use DispatchInputEvent() instead" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6264); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aEventName.EqualsLiteral(\"input\") && !aEventName.EqualsLiteral(\"beforeinput\")"
 ") (" "Use DispatchInputEvent() instead" ")"); do { MOZ_CrashSequence
(__null, 6264); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
6264             "Use DispatchInputEvent() instead")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aEventName.EqualsLiteral("input") && !aEventName
.EqualsLiteral("beforeinput"))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aEventName.EqualsLiteral("input"
) && !aEventName.EqualsLiteral("beforeinput")))), 0))
) { do { } while (false); MOZ_ReportAssertionFailure("!aEventName.EqualsLiteral(\"input\") && !aEventName.EqualsLiteral(\"beforeinput\")"
 " (" "Use DispatchInputEvent() instead" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6264); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aEventName.EqualsLiteral(\"input\") && !aEventName.EqualsLiteral(\"beforeinput\")"
 ") (" "Use DispatchInputEvent() instead" ")"); do { MOZ_CrashSequence
(__null, 6264); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6265  return DispatchEvent(aDoc, aTarget, aEventName, aCanBubble, aCancelable,
6266                       aComposed, Trusted::eYes, aDefaultAction,
6267                       ChromeOnlyDispatch::eNo, aSystemGroupOnly);
6268}
6269 
6270// static
6271nsresult nsContentUtils::DispatchUntrustedEvent(
6272    Document* aDoc, EventTarget* aTarget, const nsAString& aEventName,
6273    CanBubble aCanBubble, Cancelable aCancelable, bool* aDefaultAction) {
6274  return DispatchEvent(aDoc, aTarget, aEventName, aCanBubble, aCancelable,
6275                       Composed::eDefault, Trusted::eNo, aDefaultAction);
6276}
6277 
6278// static
6279nsresult nsContentUtils::DispatchEvent(
6280    Document* aDoc, EventTarget* aTarget, const nsAString& aEventName,
6281    CanBubble aCanBubble, Cancelable aCancelable, Composed aComposed,
6282    Trusted aTrusted, bool* aDefaultAction,
6283    ChromeOnlyDispatch aOnlyChromeDispatch, SystemGroupOnly aSystemGroupOnly) {
6284  if (!aDoc || !aTarget) {
6285    return NS_ERROR_INVALID_ARG;
6286  }
6287 
6288  ErrorResult err;
6289  RefPtr<Event> event =
6290      GetEventWithTarget(aDoc, aTarget, aEventName, aCanBubble, aCancelable,
6291                         aComposed, aTrusted, err);
6292  if (err.Failed()) {
6293    return err.StealNSResult();
6294  }
6295  event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch =
6296      aOnlyChromeDispatch == ChromeOnlyDispatch::eYes;
6297  event->WidgetEventPtr()->mFlags.mOnlySystemGroupDispatch =
6298      aSystemGroupOnly == SystemGroupOnly::eYes;
6299 
6300  // For the performance reason, aDoc may be set to a raw pointer because it's
6301  // used only before dispatching the event. Therefore, we should not use aDoc
6302  // anymore.
6303  aDoc = nullptr;
6304  bool doDefault = aTarget->DispatchEvent(*event, CallerType::System, err);
6305  if (aDefaultAction) {
6306    *aDefaultAction = doDefault;
6307  }
6308  return err.StealNSResult();
6309}
6310 
6311// static
6312nsresult nsContentUtils::DispatchEvent(
6313    EventTarget* aTarget, WidgetEvent& aEvent, EventMessage aEventMessage,
6314    CanBubble aCanBubble, Cancelable aCancelable, Trusted aTrusted,
6315    bool* aDefaultAction, ChromeOnlyDispatch aOnlyChromeDispatch) {
6316  MOZ_ASSERT_IF(aOnlyChromeDispatch == ChromeOnlyDispatch::eYes,do { if (aOnlyChromeDispatch == ChromeOnlyDispatch::eYes) { do
 { static_assert( mozilla::detail::AssertionConditionType<
decltype(aTrusted == Trusted::eYes)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aTrusted == Trusted::eYes)))
, 0))) { do { } while (false); MOZ_ReportAssertionFailure("aTrusted == Trusted::eYes"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6317); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aTrusted == Trusted::eYes" ")"); do { MOZ_CrashSequence
(__null, 6317); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false); } } while (false)
6317                aTrusted == Trusted::eYes)do { if (aOnlyChromeDispatch == ChromeOnlyDispatch::eYes) { do
 { static_assert( mozilla::detail::AssertionConditionType<
decltype(aTrusted == Trusted::eYes)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aTrusted == Trusted::eYes)))
, 0))) { do { } while (false); MOZ_ReportAssertionFailure("aTrusted == Trusted::eYes"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6317); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aTrusted == Trusted::eYes" ")"); do { MOZ_CrashSequence
(__null, 6317); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false); } } while (false);
6318 
6319  aEvent.mSpecifiedEventType = GetEventTypeFromMessage(aEventMessage);
6320  aEvent.SetDefaultComposed();
6321  aEvent.SetDefaultComposedInNativeAnonymousContent();
6322 
6323  aEvent.mFlags.mBubbles = aCanBubble == CanBubble::eYes;
6324  aEvent.mFlags.mCancelable = aCancelable == Cancelable::eYes;
6325  aEvent.mFlags.mOnlyChromeDispatch =
6326      aOnlyChromeDispatch == ChromeOnlyDispatch::eYes;
6327 
6328  aEvent.mTarget = aTarget;
6329 
6330  nsEventStatus status = nsEventStatus_eIgnore;
6331  nsresult rv = EventDispatcher::DispatchDOMEvent(aTarget, &aEvent, nullptr,
6332                                                  nullptr, &status);
6333  if (aDefaultAction) {
6334    *aDefaultAction = (status != nsEventStatus_eConsumeNoDefault);
6335  }
6336  return rv;
6337}
6338 
6339// static
6340nsresult nsContentUtils::DispatchInputEvent(Element* aEventTarget) {
6341  return DispatchInputEvent(aEventTarget, mozilla::eEditorInput,
6342                            mozilla::EditorInputType::eUnknown, nullptr,
6343                            InputEventOptions());
6344}
6345 
6346// static
6347nsresult nsContentUtils::DispatchInputEvent(
6348    Element* aEventTargetElement, EventMessage aEventMessage,
6349    EditorInputType aEditorInputType, EditorBase* aEditorBase,
6350    InputEventOptions&& aOptions, nsEventStatus* aEventStatus /* = nullptr */) {
6351  MOZ_ASSERT(aEventMessage == eEditorInput ||do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aEventMessage == eEditorInput || aEventMessage == eEditorBeforeInput
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aEventMessage == eEditorInput || aEventMessage == eEditorBeforeInput
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aEventMessage == eEditorInput || aEventMessage == eEditorBeforeInput"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6352); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aEventMessage == eEditorInput || aEventMessage == eEditorBeforeInput"
 ")"); do { MOZ_CrashSequence(__null, 6352); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
6352             aEventMessage == eEditorBeforeInput)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aEventMessage == eEditorInput || aEventMessage == eEditorBeforeInput
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aEventMessage == eEditorInput || aEventMessage == eEditorBeforeInput
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aEventMessage == eEditorInput || aEventMessage == eEditorBeforeInput"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6352); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aEventMessage == eEditorInput || aEventMessage == eEditorBeforeInput"
 ")"); do { MOZ_CrashSequence(__null, 6352); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6353 
6354  if (NS_WARN_IF(!aEventTargetElement)NS_warn_if_impl(!aEventTargetElement, "!aEventTargetElement",
 "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6354)) {
6355    return NS_ERROR_INVALID_ARG;
6356  }
6357 
6358  // If this is called from editor, the instance should be set to aEditorBase.
6359  // Otherwise, we need to look for an editor for aEventTargetElement.
6360  // However, we don't need to do it for HTMLEditor since nobody shouldn't
6361  // dispatch "beforeinput" nor "input" event for HTMLEditor except HTMLEditor
6362  // itself.
6363  bool useInputEvent = false;
6364  if (aEditorBase) {
6365    useInputEvent = true;
6366  } else if (const HTMLTextAreaElement* const textAreaElement =
6367                 HTMLTextAreaElement::FromNode(aEventTargetElement)) {
6368    aEditorBase = textAreaElement->GetExtantTextEditor();
6369    useInputEvent = true;
6370  } else if (const HTMLInputElement* const inputElement =
6371                 HTMLInputElement::FromNode(aEventTargetElement)) {
6372    if (inputElement->IsInputEventTarget()) {
6373      aEditorBase = inputElement->GetExtantTextEditor();
6374      useInputEvent = true;
6375    }
6376  }
6377#ifdef DEBUG1
6378  else {
6379    MOZ_ASSERT(!aEventTargetElement->IsTextControlElement(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aEventTargetElement->IsTextControlElement())>
::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(!aEventTargetElement->IsTextControlElement()))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("!aEventTargetElement->IsTextControlElement()"
 " (" "The event target may have editor, but we've not known it yet."
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6380
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aEventTargetElement->IsTextControlElement()"
 ") (" "The event target may have editor, but we've not known it yet."
 ")"); do { MOZ_CrashSequence(__null, 6380); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
6380               "The event target may have editor, but we've not known it yet.")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aEventTargetElement->IsTextControlElement())>
::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(!aEventTargetElement->IsTextControlElement()))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("!aEventTargetElement->IsTextControlElement()"
 " (" "The event target may have editor, but we've not known it yet."
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6380
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aEventTargetElement->IsTextControlElement()"
 ") (" "The event target may have editor, but we've not known it yet."
 ")"); do { MOZ_CrashSequence(__null, 6380); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6381  }
6382#endif  // #ifdef DEBUG
6383 
6384  if (!useInputEvent) {
6385    MOZ_ASSERT(aEventMessage == eEditorInput)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aEventMessage == eEditorInput)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aEventMessage == eEditorInput
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aEventMessage == eEditorInput", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6385); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aEventMessage == eEditorInput"
 ")"); do { MOZ_CrashSequence(__null, 6385); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6386    MOZ_ASSERT(aEditorInputType == EditorInputType::eUnknown)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aEditorInputType == EditorInputType::eUnknown)>::
isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aEditorInputType == EditorInputType::eUnknown))), 0)
)) { do { } while (false); MOZ_ReportAssertionFailure("aEditorInputType == EditorInputType::eUnknown"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6386); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aEditorInputType == EditorInputType::eUnknown"
 ")"); do { MOZ_CrashSequence(__null, 6386); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6387    MOZ_ASSERT(!aOptions.mNeverCancelable)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aOptions.mNeverCancelable)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aOptions.mNeverCancelable))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aOptions.mNeverCancelable"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6387); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!aOptions.mNeverCancelable" ")"); do { MOZ_CrashSequence
(__null, 6387); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6388    // Dispatch "input" event with Event instance.
6389    WidgetEvent widgetEvent(true, eUnidentifiedEvent);
6390    widgetEvent.mSpecifiedEventType = nsGkAtoms::oninput;
6391    widgetEvent.mFlags.mCancelable = false;
6392    widgetEvent.mFlags.mComposed = true;
6393    MOZ_LOG(gInputEventLog, LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, aEditorBase=%p, aEventTargetElement=%s"
, ToChar(widgetEvent.mMessage), YesOrNo(nsContentUtils::IsSafeToRunScript
()), aEditorBase, ToString(RefPtr{aEventTargetElement}).c_str
()); } } while (0)
6394            ("Dispatching %s, safe?=%s, aEditorBase=%p, aEventTargetElement=%s",do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, aEditorBase=%p, aEventTargetElement=%s"
, ToChar(widgetEvent.mMessage), YesOrNo(nsContentUtils::IsSafeToRunScript
()), aEditorBase, ToString(RefPtr{aEventTargetElement}).c_str
()); } } while (0)
6395             ToChar(widgetEvent.mMessage),do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, aEditorBase=%p, aEventTargetElement=%s"
, ToChar(widgetEvent.mMessage), YesOrNo(nsContentUtils::IsSafeToRunScript
()), aEditorBase, ToString(RefPtr{aEventTargetElement}).c_str
()); } } while (0)
6396             YesOrNo(nsContentUtils::IsSafeToRunScript()), aEditorBase,do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, aEditorBase=%p, aEventTargetElement=%s"
, ToChar(widgetEvent.mMessage), YesOrNo(nsContentUtils::IsSafeToRunScript
()), aEditorBase, ToString(RefPtr{aEventTargetElement}).c_str
()); } } while (0)
6397             ToString(RefPtr{aEventTargetElement}).c_str()))do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, aEditorBase=%p, aEventTargetElement=%s"
, ToChar(widgetEvent.mMessage), YesOrNo(nsContentUtils::IsSafeToRunScript
()), aEditorBase, ToString(RefPtr{aEventTargetElement}).c_str
()); } } while (0);
6398    return AsyncEventDispatcher::RunDOMEventWhenSafe(*aEventTargetElement,
6399                                                     widgetEvent, aEventStatus);
6400  }
6401 
6402  MOZ_ASSERT_IF(aEventMessage != eEditorBeforeInput,do { if (aEventMessage != eEditorBeforeInput) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(!aOptions
.mNeverCancelable)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aOptions.mNeverCancelable))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aOptions.mNeverCancelable"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6403); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!aOptions.mNeverCancelable" ")"); do { MOZ_CrashSequence
(__null, 6403); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false); } } while (false)
6403                !aOptions.mNeverCancelable)do { if (aEventMessage != eEditorBeforeInput) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(!aOptions
.mNeverCancelable)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aOptions.mNeverCancelable))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!aOptions.mNeverCancelable"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6403); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!aOptions.mNeverCancelable" ")"); do { MOZ_CrashSequence
(__null, 6403); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false); } } while (false);
6404  MOZ_ASSERT_IF(do { if (aEventMessage == eEditorBeforeInput && aOptions
.mNeverCancelable) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(aEditorInputType == EditorInputType::eInsertReplacementText
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aEditorInputType == EditorInputType::eInsertReplacementText
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aEditorInputType == EditorInputType::eInsertReplacementText"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6406); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aEditorInputType == EditorInputType::eInsertReplacementText"
 ")"); do { MOZ_CrashSequence(__null, 6406); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
6405      aEventMessage == eEditorBeforeInput && aOptions.mNeverCancelable,do { if (aEventMessage == eEditorBeforeInput && aOptions
.mNeverCancelable) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(aEditorInputType == EditorInputType::eInsertReplacementText
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aEditorInputType == EditorInputType::eInsertReplacementText
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aEditorInputType == EditorInputType::eInsertReplacementText"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6406); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aEditorInputType == EditorInputType::eInsertReplacementText"
 ")"); do { MOZ_CrashSequence(__null, 6406); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false)
6406      aEditorInputType == EditorInputType::eInsertReplacementText)do { if (aEventMessage == eEditorBeforeInput && aOptions
.mNeverCancelable) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(aEditorInputType == EditorInputType::eInsertReplacementText
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aEditorInputType == EditorInputType::eInsertReplacementText
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aEditorInputType == EditorInputType::eInsertReplacementText"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6406); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aEditorInputType == EditorInputType::eInsertReplacementText"
 ")"); do { MOZ_CrashSequence(__null, 6406); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
6407 
6408  nsCOMPtr<nsIWidget> widget;
6409  if (aEditorBase) {
6410    widget = aEditorBase->GetWidget();
6411    if (NS_WARN_IF(!widget)NS_warn_if_impl(!widget, "!widget", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6411)) {
6412      return NS_ERROR_FAILURE;
6413    }
6414  } else {
6415    Document* document = aEventTargetElement->OwnerDoc();
6416    if (NS_WARN_IF(!document)NS_warn_if_impl(!document, "!document", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6416)) {
6417      return NS_ERROR_FAILURE;
6418    }
6419    // If we're running xpcshell tests, we fail to get presShell here.
6420    // Even in such case, we need to dispatch "input" event without widget.
6421    PresShell* presShell = document->GetPresShell();
6422    if (presShell) {
6423      nsPresContext* presContext = presShell->GetPresContext();
6424      if (NS_WARN_IF(!presContext)NS_warn_if_impl(!presContext, "!presContext", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6424)) {
6425        return NS_ERROR_FAILURE;
6426      }
6427      widget = presContext->GetRootWidget();
6428      if (NS_WARN_IF(!widget)NS_warn_if_impl(!widget, "!widget", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6428)) {
6429        return NS_ERROR_FAILURE;
6430      }
6431    }
6432  }
6433 
6434  // Dispatch "input" event with InputEvent instance.
6435  InternalEditorInputEvent inputEvent(true, aEventMessage, widget);
6436 
6437  inputEvent.mFlags.mCancelable =
6438      !aOptions.mNeverCancelable && aEventMessage == eEditorBeforeInput &&
6439      IsCancelableBeforeInputEvent(aEditorInputType);
6440  MOZ_ASSERT(!inputEvent.mFlags.mCancelable || aEventStatus)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!inputEvent.mFlags.mCancelable || aEventStatus)>::
isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(!inputEvent.mFlags.mCancelable || aEventStatus))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("!inputEvent.mFlags.mCancelable || aEventStatus"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6440); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!inputEvent.mFlags.mCancelable || aEventStatus"
 ")"); do { MOZ_CrashSequence(__null, 6440); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6441 
6442  // If there is an editor, set isComposing to true when it has composition.
6443  // Note that EditorBase::IsIMEComposing() may return false even when we
6444  // need to set it to true.
6445  // Otherwise, i.e., editor hasn't been created for the element yet,
6446  // we should set isComposing to false since the element can never has
6447  // composition without editor.
6448  inputEvent.mIsComposing = aEditorBase && aEditorBase->GetComposition();
6449 
6450  if (!aEditorBase || aEditorBase->IsTextEditor()) {
6451    if (IsDataAvailableOnTextEditor(aEditorInputType)) {
6452      inputEvent.mData = std::move(aOptions.mData);
6453      MOZ_ASSERT(!inputEvent.mData.IsVoid(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!inputEvent.mData.IsVoid())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!inputEvent.mData.IsVoid()))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inputEvent.mData.IsVoid()"
 " (" "inputEvent.mData shouldn't be void" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6454); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inputEvent.mData.IsVoid()"
 ") (" "inputEvent.mData shouldn't be void" ")"); do { MOZ_CrashSequence
(__null, 6454); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
6454                 "inputEvent.mData shouldn't be void")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!inputEvent.mData.IsVoid())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!inputEvent.mData.IsVoid()))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inputEvent.mData.IsVoid()"
 " (" "inputEvent.mData shouldn't be void" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6454); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inputEvent.mData.IsVoid()"
 ") (" "inputEvent.mData shouldn't be void" ")"); do { MOZ_CrashSequence
(__null, 6454); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6455    }
6456#ifdef DEBUG1
6457    else {
6458      MOZ_ASSERT(inputEvent.mData.IsVoid(), "inputEvent.mData should be void")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(inputEvent.mData.IsVoid())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(inputEvent.mData.IsVoid())))
, 0))) { do { } while (false); MOZ_ReportAssertionFailure("inputEvent.mData.IsVoid()"
 " (" "inputEvent.mData should be void" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6458); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inputEvent.mData.IsVoid()"
 ") (" "inputEvent.mData should be void" ")"); do { MOZ_CrashSequence
(__null, 6458); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6459    }
6460#endif  // #ifdef DEBUG
6461    MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aOptions.mTargetRanges.IsEmpty())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aOptions.mTargetRanges.IsEmpty
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aOptions.mTargetRanges.IsEmpty()" " (" "Target ranges for <input> and <textarea> should always be empty"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6463
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aOptions.mTargetRanges.IsEmpty()"
 ") (" "Target ranges for <input> and <textarea> should always be empty"
 ")"); do { MOZ_CrashSequence(__null, 6463); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
6462        aOptions.mTargetRanges.IsEmpty(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aOptions.mTargetRanges.IsEmpty())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aOptions.mTargetRanges.IsEmpty
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aOptions.mTargetRanges.IsEmpty()" " (" "Target ranges for <input> and <textarea> should always be empty"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6463
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aOptions.mTargetRanges.IsEmpty()"
 ") (" "Target ranges for <input> and <textarea> should always be empty"
 ")"); do { MOZ_CrashSequence(__null, 6463); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
6463        "Target ranges for <input> and <textarea> should always be empty")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aOptions.mTargetRanges.IsEmpty())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aOptions.mTargetRanges.IsEmpty
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aOptions.mTargetRanges.IsEmpty()" " (" "Target ranges for <input> and <textarea> should always be empty"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6463
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aOptions.mTargetRanges.IsEmpty()"
 ") (" "Target ranges for <input> and <textarea> should always be empty"
 ")"); do { MOZ_CrashSequence(__null, 6463); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6464  } else {
6465    MOZ_ASSERT(aEditorBase->IsHTMLEditor())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aEditorBase->IsHTMLEditor())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aEditorBase->IsHTMLEditor
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aEditorBase->IsHTMLEditor()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6465); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aEditorBase->IsHTMLEditor()"
 ")"); do { MOZ_CrashSequence(__null, 6465); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6466    if (IsDataAvailableOnHTMLEditor(aEditorInputType)) {
6467      inputEvent.mData = std::move(aOptions.mData);
6468      MOZ_ASSERT(!inputEvent.mData.IsVoid(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!inputEvent.mData.IsVoid())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!inputEvent.mData.IsVoid()))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inputEvent.mData.IsVoid()"
 " (" "inputEvent.mData shouldn't be void" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6469); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inputEvent.mData.IsVoid()"
 ") (" "inputEvent.mData shouldn't be void" ")"); do { MOZ_CrashSequence
(__null, 6469); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
6469                 "inputEvent.mData shouldn't be void")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!inputEvent.mData.IsVoid())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!inputEvent.mData.IsVoid()))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inputEvent.mData.IsVoid()"
 " (" "inputEvent.mData shouldn't be void" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6469); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inputEvent.mData.IsVoid()"
 ") (" "inputEvent.mData shouldn't be void" ")"); do { MOZ_CrashSequence
(__null, 6469); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6470    } else {
6471      MOZ_ASSERT(inputEvent.mData.IsVoid(), "inputEvent.mData should be void")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(inputEvent.mData.IsVoid())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(inputEvent.mData.IsVoid())))
, 0))) { do { } while (false); MOZ_ReportAssertionFailure("inputEvent.mData.IsVoid()"
 " (" "inputEvent.mData should be void" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6471); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inputEvent.mData.IsVoid()"
 ") (" "inputEvent.mData should be void" ")"); do { MOZ_CrashSequence
(__null, 6471); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6472      if (IsDataTransferAvailableOnHTMLEditor(aEditorInputType)) {
6473        inputEvent.mDataTransfer = std::move(aOptions.mDataTransfer);
6474        MOZ_ASSERT(inputEvent.mDataTransfer,do { static_assert( mozilla::detail::AssertionConditionType<
decltype(inputEvent.mDataTransfer)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(inputEvent.mDataTransfer))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("inputEvent.mDataTransfer"
 " (" "inputEvent.mDataTransfer shouldn't be nullptr" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6475); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inputEvent.mDataTransfer"
 ") (" "inputEvent.mDataTransfer shouldn't be nullptr" ")"); do
 { MOZ_CrashSequence(__null, 6475); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false)
6475                   "inputEvent.mDataTransfer shouldn't be nullptr")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(inputEvent.mDataTransfer)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(inputEvent.mDataTransfer))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("inputEvent.mDataTransfer"
 " (" "inputEvent.mDataTransfer shouldn't be nullptr" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6475); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inputEvent.mDataTransfer"
 ") (" "inputEvent.mDataTransfer shouldn't be nullptr" ")"); do
 { MOZ_CrashSequence(__null, 6475); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false);
6476        MOZ_ASSERT(inputEvent.mDataTransfer->IsReadOnly(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(inputEvent.mDataTransfer->IsReadOnly())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(inputEvent.mDataTransfer->IsReadOnly()))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("inputEvent.mDataTransfer->IsReadOnly()"
 " (" "inputEvent.mDataTransfer should be read only" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6477); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inputEvent.mDataTransfer->IsReadOnly()"
 ") (" "inputEvent.mDataTransfer should be read only" ")"); do
 { MOZ_CrashSequence(__null, 6477); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false)
6477                   "inputEvent.mDataTransfer should be read only")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(inputEvent.mDataTransfer->IsReadOnly())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(inputEvent.mDataTransfer->IsReadOnly()))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("inputEvent.mDataTransfer->IsReadOnly()"
 " (" "inputEvent.mDataTransfer should be read only" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6477); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inputEvent.mDataTransfer->IsReadOnly()"
 ") (" "inputEvent.mDataTransfer should be read only" ")"); do
 { MOZ_CrashSequence(__null, 6477); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false);
6478      }
6479#ifdef DEBUG1
6480      else {
6481        MOZ_ASSERT(!inputEvent.mDataTransfer,do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!inputEvent.mDataTransfer)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!inputEvent.mDataTransfer)))
, 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inputEvent.mDataTransfer"
 " (" "inputEvent.mDataTransfer should be nullptr" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6482); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inputEvent.mDataTransfer"
 ") (" "inputEvent.mDataTransfer should be nullptr" ")"); do {
 MOZ_CrashSequence(__null, 6482); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false)
6482                   "inputEvent.mDataTransfer should be nullptr")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!inputEvent.mDataTransfer)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!inputEvent.mDataTransfer)))
, 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inputEvent.mDataTransfer"
 " (" "inputEvent.mDataTransfer should be nullptr" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6482); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inputEvent.mDataTransfer"
 ") (" "inputEvent.mDataTransfer should be nullptr" ")"); do {
 MOZ_CrashSequence(__null, 6482); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false);
6483      }
6484#endif  // #ifdef DEBUG
6485    }
6486    if (aEventMessage == eEditorBeforeInput &&
6487        MayHaveTargetRangesOnHTMLEditor(aEditorInputType)) {
6488      inputEvent.mTargetRanges = std::move(aOptions.mTargetRanges);
6489    }
6490#ifdef DEBUG1
6491    else {
6492      MOZ_ASSERT(aOptions.mTargetRanges.IsEmpty(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aOptions.mTargetRanges.IsEmpty())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aOptions.mTargetRanges.IsEmpty
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aOptions.mTargetRanges.IsEmpty()" " (" "Target ranges shouldn't be set for the dispatching event"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6493
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aOptions.mTargetRanges.IsEmpty()"
 ") (" "Target ranges shouldn't be set for the dispatching event"
 ")"); do { MOZ_CrashSequence(__null, 6493); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
6493                 "Target ranges shouldn't be set for the dispatching event")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aOptions.mTargetRanges.IsEmpty())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aOptions.mTargetRanges.IsEmpty
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aOptions.mTargetRanges.IsEmpty()" " (" "Target ranges shouldn't be set for the dispatching event"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6493
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aOptions.mTargetRanges.IsEmpty()"
 ") (" "Target ranges shouldn't be set for the dispatching event"
 ")"); do { MOZ_CrashSequence(__null, 6493); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6494    }
6495#endif  // #ifdef DEBUG
6496  }
6497 
6498  inputEvent.mInputType = aEditorInputType;
6499 
6500  // If we cannot dispatch an event right now, we cannot make it cancelable.
6501  if (!nsContentUtils::IsSafeToRunScript()) {
6502    NS_ASSERTION(do { if (!(!inputEvent.mFlags.mCancelable)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Cancelable beforeinput event dispatcher should run when it's safe"
, "!inputEvent.mFlags.mCancelable", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6504); MOZ_PretendNoReturn(); } } while (0)
6503        !inputEvent.mFlags.mCancelable,do { if (!(!inputEvent.mFlags.mCancelable)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Cancelable beforeinput event dispatcher should run when it's safe"
, "!inputEvent.mFlags.mCancelable", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6504); MOZ_PretendNoReturn(); } } while (0)
6504        "Cancelable beforeinput event dispatcher should run when it's safe")do { if (!(!inputEvent.mFlags.mCancelable)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Cancelable beforeinput event dispatcher should run when it's safe"
, "!inputEvent.mFlags.mCancelable", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6504); MOZ_PretendNoReturn(); } } while (0);
6505    inputEvent.mFlags.mCancelable = false;
6506  }
6507  MOZ_LOG(gInputEventLog, LogLevel::Info,do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, inputType=%s, aEditorBase=%p, "
 "aEventTargetElement=%s", ToChar(inputEvent.mMessage), YesOrNo
(nsContentUtils::IsSafeToRunScript()), ToString(inputEvent.mInputType
).c_str(), aEditorBase, ToString(RefPtr{aEventTargetElement})
.c_str()); } } while (0)
6508          ("Dispatching %s, safe?=%s, inputType=%s, aEditorBase=%p, "do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, inputType=%s, aEditorBase=%p, "
 "aEventTargetElement=%s", ToChar(inputEvent.mMessage), YesOrNo
(nsContentUtils::IsSafeToRunScript()), ToString(inputEvent.mInputType
).c_str(), aEditorBase, ToString(RefPtr{aEventTargetElement})
.c_str()); } } while (0)
6509           "aEventTargetElement=%s",do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, inputType=%s, aEditorBase=%p, "
 "aEventTargetElement=%s", ToChar(inputEvent.mMessage), YesOrNo
(nsContentUtils::IsSafeToRunScript()), ToString(inputEvent.mInputType
).c_str(), aEditorBase, ToString(RefPtr{aEventTargetElement})
.c_str()); } } while (0)
6510           ToChar(inputEvent.mMessage),do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, inputType=%s, aEditorBase=%p, "
 "aEventTargetElement=%s", ToChar(inputEvent.mMessage), YesOrNo
(nsContentUtils::IsSafeToRunScript()), ToString(inputEvent.mInputType
).c_str(), aEditorBase, ToString(RefPtr{aEventTargetElement})
.c_str()); } } while (0)
6511           YesOrNo(nsContentUtils::IsSafeToRunScript()),do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, inputType=%s, aEditorBase=%p, "
 "aEventTargetElement=%s", ToChar(inputEvent.mMessage), YesOrNo
(nsContentUtils::IsSafeToRunScript()), ToString(inputEvent.mInputType
).c_str(), aEditorBase, ToString(RefPtr{aEventTargetElement})
.c_str()); } } while (0)
6512           ToString(inputEvent.mInputType).c_str(), aEditorBase,do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, inputType=%s, aEditorBase=%p, "
 "aEventTargetElement=%s", ToChar(inputEvent.mMessage), YesOrNo
(nsContentUtils::IsSafeToRunScript()), ToString(inputEvent.mInputType
).c_str(), aEditorBase, ToString(RefPtr{aEventTargetElement})
.c_str()); } } while (0)
6513           ToString(RefPtr{aEventTargetElement}).c_str()))do { const ::mozilla::LogModule* moz_real_module = gInputEventLog
; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module
, LogLevel::Info)), 0))) { mozilla::detail::log_print(moz_real_module
, LogLevel::Info, "Dispatching %s, safe?=%s, inputType=%s, aEditorBase=%p, "
 "aEventTargetElement=%s", ToChar(inputEvent.mMessage), YesOrNo
(nsContentUtils::IsSafeToRunScript()), ToString(inputEvent.mInputType
).c_str(), aEditorBase, ToString(RefPtr{aEventTargetElement})
.c_str()); } } while (0);
6514  return AsyncEventDispatcher::RunDOMEventWhenSafe(*aEventTargetElement,
6515                                                   inputEvent, aEventStatus);
6516}
6517 
6518nsresult nsContentUtils::DispatchChromeEvent(
6519    Document* aDoc, EventTarget* aTarget, const nsAString& aEventName,
6520    CanBubble aCanBubble, Cancelable aCancelable, bool* aDefaultAction) {
6521  if (!aDoc || !aTarget) {
6522    return NS_ERROR_INVALID_ARG;
6523  }
6524 
6525  if (!aDoc->GetWindow()) {
6526    return NS_ERROR_INVALID_ARG;
6527  }
6528 
6529  EventTarget* piTarget = aDoc->GetWindow()->GetParentTarget();
6530  if (!piTarget) {
6531    return NS_ERROR_INVALID_ARG;
6532  }
6533 
6534  ErrorResult err;
6535  RefPtr<Event> event =
6536      GetEventWithTarget(aDoc, aTarget, aEventName, aCanBubble, aCancelable,
6537                         Composed::eDefault, Trusted::eYes, err);
6538  if (err.Failed()) {
6539    return err.StealNSResult();
6540  }
6541 
6542  bool defaultActionEnabled =
6543      piTarget->DispatchEvent(*event, CallerType::System, err);
6544  if (aDefaultAction) {
6545    *aDefaultAction = defaultActionEnabled;
6546  }
6547  return err.StealNSResult();
6548}
6549 
6550void nsContentUtils::RequestFrameFocus(Element& aFrameElement, bool aCanRaise,
6551                                       CallerType aCallerType) {
6552  RefPtr<Element> target = &aFrameElement;
6553  bool defaultAction = true;
6554  if (aCanRaise) {
6555    RefPtr<Document> doc = target->OwnerDoc();
6556    DispatchEventOnlyToChrome(doc, target, u"framefocusrequested"_ns,
6557                              CanBubble::eYes, Cancelable::eYes,
6558                              &defaultAction);
6559  }
6560  if (!defaultAction) {
6561    return;
6562  }
6563 
6564  RefPtr<nsFocusManager> fm = nsFocusManager::GetFocusManager();
6565  if (!fm) {
6566    return;
6567  }
6568 
6569  uint32_t flags = nsIFocusManager::FLAG_NOSCROLL;
6570  if (aCanRaise) {
6571    flags |= nsIFocusManager::FLAG_RAISE;
6572  }
6573 
6574  if (aCallerType == CallerType::NonSystem) {
6575    flags |= nsIFocusManager::FLAG_NONSYSTEMCALLER;
6576  }
6577 
6578  fm->SetFocus(target, flags);
6579}
6580 
6581nsresult nsContentUtils::DispatchEventOnlyToChrome(
6582    Document* aDoc, EventTarget* aTarget, const nsAString& aEventName,
6583    CanBubble aCanBubble, Cancelable aCancelable, Composed aComposed,
6584    bool* aDefaultAction) {
6585  return DispatchEvent(aDoc, aTarget, aEventName, aCanBubble, aCancelable,
6586                       aComposed, Trusted::eYes, aDefaultAction,
6587                       ChromeOnlyDispatch::eYes);
6588}
6589 
6590/* static */
6591Element* nsContentUtils::MatchElementId(nsIContent* aContent,
6592                                        const nsAtom* aId) {
6593  for (nsIContent* cur = aContent; cur; cur = cur->GetNextNode(aContent)) {
6594    if (aId == cur->GetID()) {
6595      return cur->AsElement();
6596    }
6597  }
6598 
6599  return nullptr;
6600}
6601 
6602/* static */
6603Element* nsContentUtils::MatchElementId(nsIContent* aContent,
6604                                        const nsAString& aId) {
6605  MOZ_ASSERT(!aId.IsEmpty(), "Will match random elements")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aId.IsEmpty())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aId.IsEmpty()))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("!aId.IsEmpty()"
 " (" "Will match random elements" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6605); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!aId.IsEmpty()"
 ") (" "Will match random elements" ")"); do { MOZ_CrashSequence
(__null, 6605); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6606 
6607  // ID attrs are generally stored as atoms, so just atomize this up front
6608  RefPtr<nsAtom> id(NS_Atomize(aId));
6609  if (!id) {
6610    // OOM, so just bail
6611    return nullptr;
6612  }
6613 
6614  return MatchElementId(aContent, id);
6615}
6616 
6617/* static */
6618void nsContentUtils::RegisterShutdownObserver(nsIObserver* aObserver) {
6619  nsCOMPtr<nsIObserverService> observerService =
6620      mozilla::services::GetObserverService();
6621  if (observerService) {
6622    observerService->AddObserver(aObserver, NS_XPCOM_SHUTDOWN_OBSERVER_ID"xpcom-shutdown",
6623                                 false);
6624  }
6625}
6626 
6627/* static */
6628void nsContentUtils::UnregisterShutdownObserver(nsIObserver* aObserver) {
6629  nsCOMPtr<nsIObserverService> observerService =
6630      mozilla::services::GetObserverService();
6631  if (observerService) {
6632    observerService->RemoveObserver(aObserver, NS_XPCOM_SHUTDOWN_OBSERVER_ID"xpcom-shutdown");
6633  }
6634}
6635 
6636/* static */
6637bool nsContentUtils::HasNonEmptyAttr(const nsIContent* aContent,
6638                                     int32_t aNameSpaceID, nsAtom* aName) {
6639  static AttrArray::AttrValuesArray strings[] = {nsGkAtoms::_empty, nullptr};
6640  return aContent->IsElement() &&
6641         aContent->AsElement()->FindAttrValueIn(aNameSpaceID, aName, strings,
6642                                                eCaseMatters) ==
6643             AttrArray::ATTR_VALUE_NO_MATCH;
6644}
6645 
6646void nsContentUtils::NotifyDevToolsOfNodeRemoval(nsINode& aRemovingNode) {
6647  // Having an explicit check here since it's an easy mistake to fall into,
6648  // and there might be existing code with problems. We'd rather be safe
6649  // than fire a chrome only event in all corner cases. We also rely on it for
6650  // nsAutoScriptBlockerSuppressNodeRemoved.
6651  if (!IsSafeToRunScript()) {
6652    // This checks that IsSafeToRunScript is true since we don't want to fire
6653    // events when that is false. We can't rely on EventDispatcher to assert
6654    // this in this situation since most of the time DevTools is not observing
6655    // the mutations, in which case we won't even attempt to dispatch events.
6656    // However this also allows for two exceptions. First off, we don't assert
6657    // if the mutation happens to native anonymous content since we never fire
6658    // mutation events on such content anyway.
6659    // Second, we don't assert if sDOMNodeRemovedSuppressCount is true since
6660    // that is a know case when we'd normally fire a mutation event, but can't
6661    // make that safe and so we suppress it at this time. Ideally this should
6662    // go away eventually.
6663    if (!aRemovingNode.IsInNativeAnonymousSubtree() &&
6664        !sDOMNodeRemovedSuppressCount) {
6665      NS_ERROR(do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Want to fire \"devtoolschildremoved\" event, but it's not safe"
, "Error", "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 6666); MOZ_PretendNoReturn(); } while (0)
6666          "Want to fire \"devtoolschildremoved\" event, but it's not safe")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Want to fire \"devtoolschildremoved\" event, but it's not safe"
, "Error", "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 6666); MOZ_PretendNoReturn(); } while (0);
6667      WarnScriptWasIgnored(aRemovingNode.OwnerDoc());
6668    }
6669    return;
6670  }
6671 
6672  if (MOZ_UNLIKELY(aRemovingNode.DevToolsShouldBeNotifiedOfThisRemoval())(__builtin_expect(!!(aRemovingNode.DevToolsShouldBeNotifiedOfThisRemoval
()), 0))) {
6673    const RefPtr<Document> doc = aRemovingNode.OwnerDoc();
6674    DispatchChromeEvent(doc, &aRemovingNode, u"devtoolschildremoved"_ns,
6675                        CanBubble::eNo, Cancelable::eNo);
6676  }
6677}
6678 
6679void nsContentUtils::UnmarkGrayJSListenersInCCGenerationDocuments() {
6680  for (EventListenerManager& mgr : sNodeEventListenerManagers) {
6681    nsINode* n = static_cast<nsINode*>(mgr.GetTarget());
6682    if (n && n->IsInComposedDoc() &&
6683        nsCCUncollectableMarker::InGeneration(
6684            n->OwnerDoc()->GetMarkedCCGeneration())) {
6685      mgr.MarkForCC();
6686    }
6687  }
6688}
6689 
6690/* static */
6691void nsContentUtils::AddNodeListenerManager(EventListenerManager* aManager) {
6692  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6692); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 6692); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6693  sNodeEventListenerManagers.pushBack(aManager);
6694}
6695 
6696/* static */
6697void nsContentUtils::RemoveNodeListenerManager(EventListenerManager* aManager) {
6698  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6698); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 6698); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
6699  // ~EventListenerManager passes here managers which are not in the list.
6700  if (sNodeEventListenerManagers.ElementProbablyInList(aManager)) {
6701    sNodeEventListenerManagers.remove(aManager);
6702  }
6703}
6704 
6705void nsContentUtils::AddEntryToDOMArenaTable(nsINode* aNode,
6706                                             DOMArena* aDOMArena) {
6707  MOZ_ASSERT_IF(sDOMArenaHashtable, !sDOMArenaHashtable->Contains(aNode))do { if (sDOMArenaHashtable) { do { static_assert( mozilla::detail
::AssertionConditionType<decltype(!sDOMArenaHashtable->
Contains(aNode))>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(!sDOMArenaHashtable->Contains
(aNode)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!sDOMArenaHashtable->Contains(aNode)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 6707); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!sDOMArenaHashtable->Contains(aNode)"
 ")"); do { MOZ_CrashSequence(__null, 6707); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
6708  MOZ_ASSERT(!aNode->HasFlag(NODE_KEEPS_DOMARENA))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aNode->HasFlag(NODE_KEEPS_DOMARENA))>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(!aNode->HasFlag(NODE_KEEPS_DOMARENA)))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("!aNode->HasFlag(NODE_KEEPS_DOMARENA)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6708); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!aNode->HasFlag(NODE_KEEPS_DOMARENA)" ")"
); do { MOZ_CrashSequence(__null, 6708); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6709  if (!sDOMArenaHashtable) {
6710    sDOMArenaHashtable =
6711        new nsRefPtrHashtable<nsPtrHashKey<const nsINode>, dom::DOMArena>();
6712  }
6713  aNode->SetFlags(NODE_KEEPS_DOMARENA);
6714  sDOMArenaHashtable->InsertOrUpdate(aNode, RefPtr<DOMArena>(aDOMArena));
6715}
6716 
6717DOMArena* nsContentUtils::GetEntryFromDOMArenaTable(const nsINode* aNode) {
6718  if (!sDOMArenaHashtable) {
6719    return nullptr;
6720  }
6721  return sDOMArenaHashtable->MaybeGet(aNode).valueOr(nullptr);
6722}
6723 
6724already_AddRefed<DOMArena> nsContentUtils::TakeEntryFromDOMArenaTable(
6725    const nsINode* aNode) {
6726  MOZ_ASSERT(sDOMArenaHashtable->Contains(aNode))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(sDOMArenaHashtable->Contains(aNode))>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(sDOMArenaHashtable->Contains(aNode)))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("sDOMArenaHashtable->Contains(aNode)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 6726); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "sDOMArenaHashtable->Contains(aNode)" ")"
); do { MOZ_CrashSequence(__null, 6726); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
6727  RefPtr<DOMArena> arena;
6728  sDOMArenaHashtable->Remove(aNode, getter_AddRefs(arena));
6729  return arena.forget();
6730}
6731 
6732/* static */
6733bool nsContentUtils::IsValidNodeName(nsAtom* aLocalName, nsAtom* aPrefix,
6734                                     int32_t aNamespaceID) {
6735  if (aNamespaceID == kNameSpaceID_Unknown-1) {
6736    return false;
6737  }
6738 
6739  if (!aPrefix) {
6740    // If the prefix is null, then either the QName must be xmlns or the
6741    // namespace must not be XMLNS.
6742    return (aLocalName == nsGkAtoms::xmlns) ==
6743           (aNamespaceID == kNameSpaceID_XMLNS1);
6744  }
6745 
6746  // If the prefix is non-null then the namespace must not be null.
6747  if (aNamespaceID == kNameSpaceID_None) {
6748    return false;
6749  }
6750 
6751  // If the namespace is the XMLNS namespace then the prefix must be xmlns,
6752  // but the localname must not be xmlns.
6753  if (aNamespaceID == kNameSpaceID_XMLNS1) {
6754    return aPrefix == nsGkAtoms::xmlns && aLocalName != nsGkAtoms::xmlns;
6755  }
6756 
6757  // If the namespace is not the XMLNS namespace then the prefix must not be
6758  // xmlns.
6759  // If the namespace is the XML namespace then the prefix can be anything.
6760  // If the namespace is not the XML namespace then the prefix must not be xml.
6761  return aPrefix != nsGkAtoms::xmlns &&
6762         (aNamespaceID == kNameSpaceID_XML2 || aPrefix != nsGkAtoms::xml);
6763}
6764 
6765already_AddRefed<DocumentFragment> nsContentUtils::CreateContextualFragment(
6766    nsINode* aContextNode, const nsAString& aFragment,
6767    bool aPreventScriptExecution,
6768    Maybe<RefPtr<CustomElementRegistry>> aCustomElementRegistry,
6769    ErrorResult& aRv) {
6770  if (!aContextNode) {
6771    aRv.Throw(NS_ERROR_INVALID_ARG);
6772    return nullptr;
6773  }
6774 
6775  // If we don't have a document here, we can't get the right security context
6776  // for compiling event handlers... so just bail out.
6777  RefPtr<Document> document = aContextNode->OwnerDoc();
6778  bool isHTML = document->IsHTMLDocument();
6779 
6780  if (isHTML) {
6781    RefPtr<DocumentFragment> frag = new (document->NodeInfoManager())
6782        DocumentFragment(document->NodeInfoManager());
6783 
6784    Element* element = aContextNode->GetAsElementOrParentElement();
6785    if (element && !element->IsHTMLElement(nsGkAtoms::html)) {
6786      aRv = ParseFragmentHTML(
6787          aFragment, frag, element->NodeInfo()->NameAtom(),
6788          element->GetNameSpaceID(),
6789          (document->GetCompatibilityMode() == eCompatibility_NavQuirks),
6790          aPreventScriptExecution, kParseFragmentPrivilegedDefaultSanitization,
6791          std::move(aCustomElementRegistry));
6792    } else {
6793      aRv = ParseFragmentHTML(
6794          aFragment, frag, nsGkAtoms::body, kNameSpaceID_XHTML3,
6795          (document->GetCompatibilityMode() == eCompatibility_NavQuirks),
6796          aPreventScriptExecution, kParseFragmentPrivilegedDefaultSanitization,
6797          std::move(aCustomElementRegistry));
6798    }
6799 
6800    return frag.forget();
6801  }
6802 
6803  AutoTArray<nsString, 32> tagStack;
6804  nsAutoString uriStr, nameStr;
6805  for (Element* element : aContextNode->InclusiveAncestorsOfType<Element>()) {
6806    nsString& tagName = *tagStack.AppendElement();
6807    // It mostly doesn't actually matter what tag name we use here: XML doesn't
6808    // have parsing that depends on the open tag stack, apart from namespace
6809    // declarations.  So this whole tagStack bit is just there to get the right
6810    // namespace declarations to the XML parser.  That said, the parser _is_
6811    // going to create elements with the tag names we provide here, so we need
6812    // to make sure they are not names that can trigger custom element
6813    // constructors.  Just make up a name that is never going to be a valid
6814    // custom element name.
6815    //
6816    // The principled way to do this would probably be to add a new FromParser
6817    // value and make sure we use it when creating the context elements, then
6818    // make sure we teach all FromParser consumers (and in particular the custom
6819    // element code) about it as needed.  But right now the XML parser never
6820    // actually uses FromParser values other than NOT_FROM_PARSER, and changing
6821    // that is pretty complicated.
6822    tagName.AssignLiteral("notacustomelement");
6823 
6824    // see if we need to add xmlns declarations
6825    uint32_t count = element->GetAttrCount();
6826    bool setDefaultNamespace = false;
6827    if (count > 0) {
6828      uint32_t index;
6829 
6830      for (index = 0; index < count; index++) {
6831        const BorrowedAttrInfo info = element->GetAttrInfoAt(index);
6832        const nsAttrName* name = info.mName;
6833        if (name->NamespaceEquals(kNameSpaceID_XMLNS1)) {
6834          info.mValue->ToString(uriStr);
6835 
6836          // really want something like nsXMLContentSerializer::SerializeAttr
6837          tagName.AppendLiteral(" xmlns");  // space important
6838          if (name->GetPrefix()) {
6839            tagName.Append(char16_t(':'));
6840            name->LocalName()->ToString(nameStr);
6841            tagName.Append(nameStr);
6842          } else {
6843            setDefaultNamespace = true;
6844          }
6845          tagName.AppendLiteral(R"(=")");
6846          tagName.Append(uriStr);
6847          tagName.Append('"');
6848        }
6849      }
6850    }
6851 
6852    if (!setDefaultNamespace) {
6853      mozilla::dom::NodeInfo* info = element->NodeInfo();
6854      if (!info->GetPrefixAtom() && info->NamespaceID() != kNameSpaceID_None) {
6855        // We have no namespace prefix, but have a namespace ID.  Push
6856        // default namespace attr in, so that our kids will be in our
6857        // namespace.
6858        info->GetNamespaceURI(uriStr);
6859        tagName.AppendLiteral(R"( xmlns=")");
6860        tagName.Append(uriStr);
6861        tagName.Append('"');
6862      }
6863    }
6864  }
6865 
6866  RefPtr<DocumentFragment> frag;
6867  aRv = ParseFragmentXML(aFragment, document, tagStack, aPreventScriptExecution,
6868                         kParseFragmentPrivilegedDefaultSanitization,
6869                         getter_AddRefs(frag));
6870  return frag.forget();
6871}
6872 
6873/* static */
6874void nsContentUtils::DropFragmentParsers() {
6875  NS_IF_RELEASE(sHTMLFragmentParser)do { if (sHTMLFragmentParser) { (sHTMLFragmentParser)->Release
(); (sHTMLFragmentParser) = 0; } } while (0);
6876  NS_IF_RELEASE(sXMLFragmentParser)do { if (sXMLFragmentParser) { (sXMLFragmentParser)->Release
(); (sXMLFragmentParser) = 0; } } while (0);
6877  NS_IF_RELEASE(sXMLFragmentSink)do { if (sXMLFragmentSink) { (sXMLFragmentSink)->Release()
; (sXMLFragmentSink) = 0; } } while (0);
6878}
6879 
6880/* static */
6881void nsContentUtils::XPCOMShutdown() { nsContentUtils::DropFragmentParsers(); }
6882 
6883// https://wicg.github.io/sanitizer-api/#set-and-filter-html
6884static void SetAndFilterHTML(
6885    FragmentOrElement* aTarget, Element* aContext, const nsAString& aHTML,
6886    const OwningSanitizerOrSanitizerConfigOrSanitizerPresets& aSanitizerOptions,
6887    const bool aSafe, ErrorResult& aError) {
6888  const RefPtr<Document> doc = aTarget->OwnerDoc();
6889 
6890  // Step 1. If safe and contextElement’s local name is "script" and
6891  // contextElement’s namespace is the HTML namespace or the SVG namespace, then
6892  // return.
6893  if (aSafe && (aContext->IsHTMLElement(nsGkAtoms::script) ||
6894                aContext->IsSVGElement(nsGkAtoms::script))) {
6895    nsContentUtils::ReportToConsole(nsIScriptError::warningFlag, "DOM"_ns, doc,
6896                                    PropertiesFile::DOM_PROPERTIES,
6897                                    "SetHTMLScript");
6898    return;
6899  }
6900 
6901  // Step 2. Let sanitizer be the result of calling get a sanitizer instance
6902  // from options with options and safe.
6903  nsCOMPtr<nsIGlobalObject> global = aTarget->GetRelevantGlobal();
6904  if (!global) {
6905    aError.ThrowInvalidStateError("Missing owner global.");
6906    return;
6907  }
6908  RefPtr<Sanitizer> sanitizer =
6909      Sanitizer::GetInstance(global, aSanitizerOptions, aSafe, aError);
6910  if (aError.Failed()) {
6911    return;
6912  }
6913 
6914  aTarget->NotifyDevToolsOfRemovalsOfChildren();
6915 
6916  // Needed when innerHTML is used in combination with contenteditable
6917  mozAutoDocUpdate updateBatch(doc, true);
6918 
6919  // Remove childnodes.
6920  nsAutoMutationBatch mb(aTarget, true, false);
6921  aTarget->RemoveAllChildren(true);
6922  mb.RemovalDone();
6923 
6924  nsAutoScriptLoaderDisabler sld(doc);
6925 
6926  // Step 3. Let newChildren be the result of the HTML fragment parsing
6927  // algorithm steps given contextElement, html, and true.
6928  // Step 4. Let fragment be a new DocumentFragment whose node document is
6929  // contextElement’s node document.
6930  // Step 5. For each node in newChildren, append node to fragment.
6931 
6932  // We MUST NOT cause any requests during parsing, so we'll
6933  // create an inert Document and parse into a new DocumentFragment.
6934 
6935  RefPtr<Document> inertDoc = nsContentUtils::CreateInertHTMLDocument(doc);
6936  if (!inertDoc) {
6937    aError = NS_ERROR_FAILURE;
6938    return;
6939  }
6940 
6941  RefPtr<DocumentFragment> fragment = new (inertDoc->NodeInfoManager())
6942      DocumentFragment(inertDoc->NodeInfoManager());
6943 
6944  nsAtom* contextLocalName = aContext->NodeInfo()->NameAtom();
6945  int32_t contextNameSpaceID = aContext->GetNameSpaceID();
6946  int32_t flags =
6947      aSafe ? nsContentUtils::kParseFragmentNoSanitization
6948            : nsContentUtils::kParseFragmentPrivilegedDefaultSanitization;
6949  aError = nsContentUtils::ParseFragmentHTML(
6950      aHTML, fragment, contextLocalName, contextNameSpaceID,
6951      /* aQuirks */ false, /* aPreventScriptExecution */ true, flags,
6952      mozilla::Nothing());
6953  if (aError.Failed()) {
6954    return;
6955  }
6956 
6957  // Suppress assertion about node removal mutation events that can't have
6958  // listeners anyway, because no one has had the chance to register
6959  // mutation listeners on the fragment that comes from the parser.
6960  nsAutoScriptBlockerSuppressNodeRemoved scriptBlocker;
6961 
6962  // Step 6. Run sanitize on fragment using sanitizer and safe.
6963  sanitizer->Sanitize(fragment, aSafe, aError);
6964  if (aError.Failed()) {
6965    return;
6966  }
6967 
6968  // Step 7. Replace all with fragment within target.
6969  aTarget->AppendChild(*fragment, aError);
6970  if (aError.Failed()) {
6971    return;
6972  }
6973 
6974  mb.NodesAdded();
6975}
6976 
6977/* static */
6978void nsContentUtils::SetHTML(FragmentOrElement* aTarget, Element* aContext,
6979                             const nsAString& aHTML,
6980                             const SetHTMLOptions& aOptions,
6981                             ErrorResult& aError) {
6982  SetAndFilterHTML(aTarget, aContext, aHTML, aOptions.mSanitizer,
6983                   /* aSafe */ true, aError);
6984}
6985 
6986/* https://html.spec.whatwg.org/#unsafely-set-html */
6987/* https://html.spec.whatwg.org/#dom-shadowroot-sethtmlunsafe */
6988/* https://html.spec.whatwg.org/#dom-element-sethtmlunsafe */
6989/* static */
6990void nsContentUtils::SetHTMLUnsafe(
6991    FragmentOrElement* aTarget, Element* aContext,
6992    const TrustedHTMLOrString& aSource, const SetHTMLUnsafeOptions& aOptions,
6993    bool aIsShadowRoot, nsIPrincipal* aSubjectPrincipal, ErrorResult& aError) {
6994  // Element's setHTMLUnsafe() step 1 / ShadowRoot's setHTMLUnsafe() step 1.
6995  // "Let compliantHTML be the result of invoking the get trusted type compliant
6996  // string algorithm with TrustedHTML, this's relevant global object, html,
6997  // «Element setHTMLUnsafe» or «ShadowRoot setHTMLUnsafe», and «script»."
6998  constexpr nsLiteralString elementSink = u"Element setHTMLUnsafe"_ns;
6999  constexpr nsLiteralString shadowRootSink = u"ShadowRoot setHTMLUnsafe"_ns;
7000  Maybe<nsAutoString> compliantStringHolder;
7001  const nsAString* compliantString =
7002      TrustedTypeUtils::GetTrustedTypesCompliantString(
7003          aSource, aIsShadowRoot ? shadowRootSink : elementSink,
7004          kTrustedTypesOnlySinkGroup, *aContext, aSubjectPrincipal,
7005          compliantStringHolder, aError);
7006  if (aError.Failed()) {
7007    return;
7008  }
7009 
7010  // Fallback to the more optimized code below without a sanitizer.
7011  if (aOptions.mSanitizer.WasPassed()) {
7012    return SetAndFilterHTML(aTarget, aContext, *compliantString,
7013                            aOptions.mSanitizer.Value(), /* aSafe */ false,
7014                            aError);
7015  }
7016 
7017  RefPtr<DocumentFragment> fragment;
7018  {
7019    MOZ_ASSERT(!sFragmentParsingActive,do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!sFragmentParsingActive)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!sFragmentParsingActive))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("!sFragmentParsingActive"
 " (" "Re-entrant fragment parsing attempted." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7020); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!sFragmentParsingActive"
 ") (" "Re-entrant fragment parsing attempted." ")"); do { MOZ_CrashSequence
(__null, 7020); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
7020               "Re-entrant fragment parsing attempted.")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!sFragmentParsingActive)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!sFragmentParsingActive))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("!sFragmentParsingActive"
 " (" "Re-entrant fragment parsing attempted." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7020); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!sFragmentParsingActive"
 ") (" "Re-entrant fragment parsing attempted." ")"); do { MOZ_CrashSequence
(__null, 7020); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7021    mozilla::AutoRestore<bool> guard(sFragmentParsingActive);
7022    sFragmentParsingActive = true;
7023    if (!sHTMLFragmentParser) {
7024      NS_ADDREF(sHTMLFragmentParser = new nsHtml5StringParser())(sHTMLFragmentParser = new nsHtml5StringParser())->AddRef(
);
7025      // Now sHTMLFragmentParser owns the object
7026    }
7027 
7028    nsAtom* contextLocalName = aContext->NodeInfo()->NameAtom();
7029    int32_t contextNameSpaceID = aContext->GetNameSpaceID();
7030 
7031    // https://html.spec.whatwg.org/#html-fragment-parsing-algorithm
7032    // 11. Let root be the result of creating an element given document,
7033    //     'html', the HTML namespace, null, null, false, and context's
7034    //     custom element registry.
7035    Maybe<RefPtr<CustomElementRegistry>> customElementRegistry;
7036    if (StaticPrefs::dom_scoped_custom_element_registries_enabled()) {
7037      customElementRegistry.emplace(aContext->GetCustomElementRegistry());
7038    }
7039 
7040    RefPtr<Document> doc = aTarget->OwnerDoc();
7041    fragment = doc->CreateDocumentFragment();
7042 
7043    // XXX: Steps 1-3 are performed together by ParseFragment, which parses
7044    // directly into the DocumentFragment.
7045    nsresult rv = sHTMLFragmentParser->ParseFragment(
7046        *compliantString, fragment, contextLocalName, contextNameSpaceID,
7047        fragment->OwnerDoc()->GetCompatibilityMode() ==
7048            eCompatibility_NavQuirks,
7049        true, true, std::move(customElementRegistry));
7050    if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
7051      NS_WARNING("Failed to parse fragment for SetHTMLUnsafe")NS_DebugBreak(NS_DEBUG_WARNING, "Failed to parse fragment for SetHTMLUnsafe"
, nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 7051);
7052    }
7053  }
7054 
7055  // Step 4. "Replace all with fragment within target."
7056  aTarget->ReplaceChildren(fragment, IgnoreErrors());
7057}
7058 
7059// We sanitize if the fragment occurs in a system privileged
7060// context, an about: page, or if there are explicit sanitization flags.
7061// Please note that about:blank and about:srcdoc inherit the security
7062// context from the embedding context and hence are not loaded using
7063// an about: scheme principal.
7064bool ShouldSanitize(nsIPrincipal* aPrincipal, int32_t aFlags) {
7065  // We don't need to sanitize for setHTML(), which uses
7066  // kParseFragmentNoSanitization.
7067  if (aFlags == nsContentUtils::kParseFragmentNoSanitization) {
7068    return false;
7069  }
7070 
7071  if (aFlags >= 0) {
7072    return true;
7073  }
7074 
7075  MOZ_ASSERT(aFlags ==do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7076); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization"
 ")"); do { MOZ_CrashSequence(__null, 7076); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
7076             nsContentUtils::kParseFragmentPrivilegedDefaultSanitization)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7076); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization"
 ")"); do { MOZ_CrashSequence(__null, 7076); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7077  return aPrincipal->IsSystemPrincipal() || aPrincipal->SchemeIs("about");
7078}
7079 
7080// Helper function to compuate Sanitization Flags for ParseFramentHTML/XML
7081uint32_t ComputeSanitizationFlags(nsIPrincipal* aPrincipal, int32_t aFlags) {
7082  MOZ_ASSERT(aFlags ==do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
 || aFlags >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
 || aFlags >= 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization || aFlags >= 0"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7084); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization || aFlags >= 0"
 ")"); do { MOZ_CrashSequence(__null, 7084); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
7083                 nsContentUtils::kParseFragmentPrivilegedDefaultSanitization ||do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
 || aFlags >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
 || aFlags >= 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization || aFlags >= 0"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7084); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization || aFlags >= 0"
 ")"); do { MOZ_CrashSequence(__null, 7084); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
7084             aFlags >= 0)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
 || aFlags >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization
 || aFlags >= 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization || aFlags >= 0"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7084); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization || aFlags >= 0"
 ")"); do { MOZ_CrashSequence(__null, 7084); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7085 
7086  if (aPrincipal->IsSystemPrincipal() || aPrincipal->SchemeIs("about")) {
7087    if (aFlags == nsContentUtils::kParseFragmentPrivilegedDefaultSanitization) {
7088      // If this is a chrome-privileged document and no explicit flags
7089      // were passed, then use these sanitization flags.
7090      return nsIParserUtils::SanitizerAllowStyle |
7091             nsIParserUtils::SanitizerAllowComments |
7092             // Don't drop forms in about: to avoid breaking existing users
7093             (aPrincipal->IsSystemPrincipal()
7094                  ? nsIParserUtils::SanitizerDropForms
7095                  : 0) |
7096             nsIParserUtils::SanitizerLogRemovals;
7097    }
7098 
7099    // If the caller explicitly passes flags, then we use those
7100    // flags but additionally drop forms.
7101    return aFlags | nsIParserUtils::SanitizerDropForms;
7102  }
7103 
7104  if (aFlags >= 0) {
7105    // aFlags by default is -1 and is only ever non equal to -1 if the
7106    // caller of ParseFragmentHTML/ParseFragmentXML is
7107    // ParserUtils::ParseFragment(). Only in that case we should use
7108    // the sanitization flags passed within aFlags.
7109    return aFlags;
7110  }
7111 
7112  MOZ_ASSERT_UNREACHABLE("We should have explicit flags")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "We should have explicit flags" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7112); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") ("
 "MOZ_ASSERT_UNREACHABLE: " "We should have explicit flags" ")"
); do { MOZ_CrashSequence(__null, 7112); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7113  return 0;
7114}
7115 
7116/* https://html.spec.whatwg.org/#html-fragment-parsing-algorithm */
7117/* static */
7118nsresult nsContentUtils::ParseFragmentHTML(
7119    const nsAString& aSourceBuffer, nsIContent* aTargetNode,
7120    nsAtom* aContextLocalName, int32_t aContextNamespace, bool aQuirks,
7121    bool aPreventScriptExecution, int32_t aFlags,
7122    mozilla::Maybe<RefPtr<mozilla::dom::CustomElementRegistry>>
7123        aCustomElementRegistry) {
7124  if (nsContentUtils::sFragmentParsingActive) {
7125    MOZ_ASSERT_UNREACHABLE("Re-entrant fragment parsing attempted.")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Re-entrant fragment parsing attempted." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7125); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") ("
 "MOZ_ASSERT_UNREACHABLE: " "Re-entrant fragment parsing attempted."
 ")"); do { MOZ_CrashSequence(__null, 7125); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7126    return NS_ERROR_DOM_INVALID_STATE_ERR;
7127  }
7128  mozilla::AutoRestore<bool> guard(nsContentUtils::sFragmentParsingActive);
7129  nsContentUtils::sFragmentParsingActive = true;
7130  if (!sHTMLFragmentParser) {
7131    NS_ADDREF(sHTMLFragmentParser = new nsHtml5StringParser())(sHTMLFragmentParser = new nsHtml5StringParser())->AddRef(
);
7132    // Now sHTMLFragmentParser owns the object
7133  }
7134 
7135  nsCOMPtr<nsIPrincipal> nodePrincipal = aTargetNode->NodePrincipal();
7136 
7137#ifdef DEBUG1
7138  // aFlags should always be kParseFragmentPrivilegedDefaultSanitization unless
7139  // the caller of ParseFragmentHTML is ParserUtils::ParseFragment() which is
7140  // the only caller that intends sanitization. For all other callers we need to
7141  // ensure to call AuditParsingOfHTMLXMLFragments.
7142  //
7143  // For SetHTML the flag is kParseFragmentNoSanitization, because that function
7144  // already sanitizes.
7145  if (aFlags == kParseFragmentPrivilegedDefaultSanitization) {
7146    DOMSecurityMonitor::AuditParsingOfHTMLXMLFragments(nodePrincipal,
7147                                                       aSourceBuffer);
7148  }
7149#endif
7150 
7151  nsIContent* target = aTargetNode;
7152 
7153  RefPtr<Document> doc = aTargetNode->OwnerDoc();
7154  RefPtr<DocumentFragment> fragment;
7155 
7156  if (ShouldSanitize(nodePrincipal, aFlags)) {
7157    if (!doc->IsLoadedAsData()) {
7158      doc = nsContentUtils::CreateInertHTMLDocument(doc);
7159      if (!doc) {
7160        return NS_ERROR_FAILURE;
7161      }
7162    }
7163    fragment =
7164        new (doc->NodeInfoManager()) DocumentFragment(doc->NodeInfoManager());
7165    target = fragment;
7166  }
7167 
7168  nsresult rv = sHTMLFragmentParser->ParseFragment(
7169      aSourceBuffer, target, aContextLocalName, aContextNamespace, aQuirks,
7170      aPreventScriptExecution, false, std::move(aCustomElementRegistry));
7171  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7171); return rv; } } while (false);
7172 
7173  if (fragment) {
7174    uint32_t sanitizationFlags =
7175        ComputeSanitizationFlags(nodePrincipal, aFlags);
7176    // Don't fire mutation events for nodes removed by the sanitizer.
7177    nsAutoScriptBlockerSuppressNodeRemoved scriptBlocker;
7178    nsTreeSanitizer sanitizer(sanitizationFlags);
7179    sanitizer.Sanitize(fragment);
7180 
7181    ErrorResult error;
7182    aTargetNode->AppendChild(*fragment, error);
7183    rv = error.StealNSResult();
7184  }
7185 
7186  return rv;
7187}
7188 
7189/* static */
7190nsresult nsContentUtils::ParseDocumentHTML(
7191    const nsAString& aSourceBuffer, Document* aTargetDocument,
7192    bool aScriptingEnabledForNoscriptParsing) {
7193  if (nsContentUtils::sFragmentParsingActive) {
7194    MOZ_ASSERT_UNREACHABLE("Re-entrant fragment parsing attempted.")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Re-entrant fragment parsing attempted." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7194); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") ("
 "MOZ_ASSERT_UNREACHABLE: " "Re-entrant fragment parsing attempted."
 ")"); do { MOZ_CrashSequence(__null, 7194); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7195    return NS_ERROR_DOM_INVALID_STATE_ERR;
7196  }
7197  mozilla::AutoRestore<bool> guard(nsContentUtils::sFragmentParsingActive);
7198  nsContentUtils::sFragmentParsingActive = true;
7199  if (!sHTMLFragmentParser) {
7200    NS_ADDREF(sHTMLFragmentParser = new nsHtml5StringParser())(sHTMLFragmentParser = new nsHtml5StringParser())->AddRef(
);
7201    // Now sHTMLFragmentParser owns the object
7202  }
7203  nsresult rv = sHTMLFragmentParser->ParseDocument(
7204      aSourceBuffer, aTargetDocument, aScriptingEnabledForNoscriptParsing);
7205  return rv;
7206}
7207 
7208/* static */
7209nsresult nsContentUtils::ParseFragmentXML(const nsAString& aSourceBuffer,
7210                                          Document* aDocument,
7211                                          nsTArray<nsString>& aTagStack,
7212                                          bool aPreventScriptExecution,
7213                                          int32_t aFlags,
7214                                          DocumentFragment** aReturn) {
7215  if (nsContentUtils::sFragmentParsingActive) {
7216    MOZ_ASSERT_UNREACHABLE("Re-entrant fragment parsing attempted.")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Re-entrant fragment parsing attempted." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7216); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") ("
 "MOZ_ASSERT_UNREACHABLE: " "Re-entrant fragment parsing attempted."
 ")"); do { MOZ_CrashSequence(__null, 7216); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7217    return NS_ERROR_DOM_INVALID_STATE_ERR;
7218  }
7219  mozilla::AutoRestore<bool> guard(nsContentUtils::sFragmentParsingActive);
7220  nsContentUtils::sFragmentParsingActive = true;
7221  if (!sXMLFragmentParser) {
7222    RefPtr<nsParser> parser = new nsParser();
7223    parser.forget(&sXMLFragmentParser);
7224    // sXMLFragmentParser now owns the parser
7225  }
7226  if (!sXMLFragmentSink) {
7227    NS_NewXMLFragmentContentSink(&sXMLFragmentSink);
7228    // sXMLFragmentSink now owns the sink
7229  }
7230  nsCOMPtr<nsIContentSink> contentsink = do_QueryInterface(sXMLFragmentSink);
7231  MOZ_ASSERT(contentsink, "Sink doesn't QI to nsIContentSink!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(contentsink)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(contentsink))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("contentsink" " ("
 "Sink doesn't QI to nsIContentSink!" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7231); AnnotateMozCrashReason("MOZ_ASSERT" "(" "contentsink"
 ") (" "Sink doesn't QI to nsIContentSink!" ")"); do { MOZ_CrashSequence
(__null, 7231); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7232  sXMLFragmentParser->SetContentSink(contentsink);
7233 
7234  RefPtr<Document> doc;
7235  nsCOMPtr<nsIPrincipal> nodePrincipal = aDocument->NodePrincipal();
7236 
7237#ifdef DEBUG1
7238  // aFlags should always be kParseFragmentPrivilegedDefaultSanitization unless
7239  // the caller of ParseFragmentXML is ParserUtils::ParseFragment() which is the
7240  // only caller that intends sanitization. For all other callers we need to
7241  // ensure to call AuditParsingOfHTMLXMLFragments.
7242  if (aFlags == kParseFragmentPrivilegedDefaultSanitization) {
7243    DOMSecurityMonitor::AuditParsingOfHTMLXMLFragments(nodePrincipal,
7244                                                       aSourceBuffer);
7245  }
7246#endif
7247 
7248  bool shouldSanitize = ShouldSanitize(nodePrincipal, aFlags);
7249  if (shouldSanitize && !aDocument->IsLoadedAsData()) {
7250    doc = nsContentUtils::CreateInertXMLDocument(aDocument);
7251  } else {
7252    doc = aDocument;
7253  }
7254 
7255  sXMLFragmentSink->SetTargetDocument(doc);
7256  sXMLFragmentSink->SetPreventScriptExecution(aPreventScriptExecution);
7257 
7258  nsresult rv = sXMLFragmentParser->ParseFragment(aSourceBuffer, aTagStack);
7259  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
7260    // Drop the fragment parser and sink that might be in an inconsistent state
7261    NS_IF_RELEASE(sXMLFragmentParser)do { if (sXMLFragmentParser) { (sXMLFragmentParser)->Release
(); (sXMLFragmentParser) = 0; } } while (0);
7262    NS_IF_RELEASE(sXMLFragmentSink)do { if (sXMLFragmentSink) { (sXMLFragmentSink)->Release()
; (sXMLFragmentSink) = 0; } } while (0);
7263    return rv;
7264  }
7265 
7266  rv = sXMLFragmentSink->FinishFragmentParsing(aReturn);
7267 
7268  sXMLFragmentParser->Reset();
7269  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7269); return rv; } } while (false);
7270 
7271  if (shouldSanitize) {
7272    uint32_t sanitizationFlags =
7273        ComputeSanitizationFlags(nodePrincipal, aFlags);
7274    // Don't fire mutation events for nodes removed by the sanitizer.
7275    nsAutoScriptBlockerSuppressNodeRemoved scriptBlocker;
7276    nsTreeSanitizer sanitizer(sanitizationFlags);
7277    sanitizer.Sanitize(*aReturn);
7278  }
7279 
7280  return rv;
7281}
7282 
7283/* static */
7284nsresult nsContentUtils::ConvertToPlainText(const nsAString& aSourceBuffer,
7285                                            nsAString& aResultBuffer,
7286                                            uint32_t aFlags,
7287                                            uint32_t aWrapCol) {
7288  RefPtr<Document> document = nsContentUtils::CreateInertHTMLDocument(nullptr);
7289  if (!document) {
7290    return NS_ERROR_FAILURE;
7291  }
7292 
7293  nsresult rv = nsContentUtils::ParseDocumentHTML(
7294      aSourceBuffer, document,
7295      !(aFlags & nsIDocumentEncoder::OutputNoScriptContent));
7296  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7296); return rv; } } while (false);
7297 
7298  nsCOMPtr<nsIDocumentEncoder> encoder = do_createDocumentEncoder("text/plain");
7299 
7300  rv = encoder->Init(document, u"text/plain"_ns, aFlags);
7301  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7301); return rv; } } while (false);
7302 
7303  encoder->SetWrapColumn(aWrapCol);
7304 
7305  return encoder->EncodeToString(aResultBuffer);
7306}
7307 
7308static already_AddRefed<Document> CreateInertDocument(const Document* aTemplate,
7309                                                      DocumentFlavor aFlavor) {
7310  if (aTemplate) {
7311    bool hasHad = true;
7312    nsIScriptGlobalObject* sgo = aTemplate->GetScriptHandlingObject(hasHad);
7313    NS_ENSURE_TRUE(sgo || !hasHad, nullptr)do { if ((__builtin_expect(!!(!(sgo || !hasHad)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "sgo || !hasHad" ") failed"
, nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 7313); return nullptr; } } while (false);
7314 
7315    nsCOMPtr<Document> doc;
7316    nsresult rv = NS_NewDOMDocument(
7317        getter_AddRefs(doc), u""_ns, u""_ns, nullptr,
7318        aTemplate->GetDocumentURI(), aTemplate->GetDocBaseURI(),
7319        aTemplate->NodePrincipal(), LoadedAsData::AsData, sgo, aFlavor);
7320    if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
7321      return nullptr;
7322    }
7323    return doc.forget();
7324  }
7325  nsCOMPtr<nsIURI> uri;
7326  NS_NewURI(getter_AddRefs(uri), "about:blank"_ns);
7327  if (!uri) {
7328    return nullptr;
7329  }
7330 
7331  RefPtr<NullPrincipal> nullPrincipal =
7332      NullPrincipal::CreateWithoutOriginAttributes();
7333  if (!nullPrincipal) {
7334    return nullptr;
7335  }
7336 
7337  nsCOMPtr<Document> doc;
7338  nsresult rv =
7339      NS_NewDOMDocument(getter_AddRefs(doc), u""_ns, u""_ns, nullptr, uri, uri,
7340                        nullPrincipal, LoadedAsData::AsData, nullptr, aFlavor);
7341  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
7342    return nullptr;
7343  }
7344  return doc.forget();
7345}
7346 
7347/* static */
7348already_AddRefed<Document> nsContentUtils::CreateInertXMLDocument(
7349    const Document* aTemplate) {
7350  return CreateInertDocument(aTemplate, DocumentFlavor::XML);
7351}
7352 
7353/* static */
7354already_AddRefed<Document> nsContentUtils::CreateInertHTMLDocument(
7355    const Document* aTemplate) {
7356  return CreateInertDocument(aTemplate, DocumentFlavor::HTML);
7357}
7358 
7359/* static */
7360nsresult nsContentUtils::SetNodeTextContent(
7361    nsIContent* aContent, const nsAString& aValue, bool aTryReuse,
7362    MutationEffectOnScript aMutationEffectOnScript) {
7363  // Optimize the common case of there being no observers
7364  if (MOZ_UNLIKELY((__builtin_expect(!!(aContent->MaybeNeedsToNotifyDevToolsOfNodeRemovalsInOwnerDoc
()), 0))
7365          aContent->MaybeNeedsToNotifyDevToolsOfNodeRemovalsInOwnerDoc())(__builtin_expect(!!(aContent->MaybeNeedsToNotifyDevToolsOfNodeRemovalsInOwnerDoc
()), 0))) {
7366    if (aTryReuse) {
7367      bool skipFirstText = true;
7368      for (nsCOMPtr<nsINode> child = aContent->GetFirstChild();
7369           child && child->GetParentNode() == aContent;
7370           child = child->GetNextSibling()) {
7371        if (skipFirstText && child->IsText()) {
7372          skipFirstText = false;
7373          continue;
7374        }
7375        nsContentUtils::NotifyDevToolsOfNodeRemoval(*child);
7376      }
7377    } else {
7378      aContent->NotifyDevToolsOfRemovalsOfChildren();
7379    }
7380  }
7381 
7382  // Might as well stick a batch around this since we're performing several
7383  // mutations.
7384  mozAutoDocUpdate updateBatch(aContent->GetComposedDoc(), true);
7385  nsAutoMutationBatch mb;
7386 
7387  if (aTryReuse && !aValue.IsEmpty()) {
7388    // Let's remove nodes until we find a eTEXT.
7389    while (aContent->HasChildren()) {
7390      nsIContent* child = aContent->GetFirstChild();
7391      if (child->IsText()) {
7392        break;
7393      }
7394      aContent->RemoveChildNode(child, true, nullptr, nullptr,
7395                                aMutationEffectOnScript);
7396    }
7397 
7398    // If we have a node, it must be a eTEXT and we reuse it.
7399    if (aContent->HasChildren()) {
7400      nsIContent* child = aContent->GetFirstChild();
7401      nsresult rv = child->AsText()->SetText(aValue, true);
7402      NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7402); return rv; } } while (false);
7403 
7404      // All the following nodes, if they exist, must be deleted.
7405      while (nsIContent* lastChild = aContent->GetLastChild()) {
7406        if (lastChild == child) {
7407          break;
7408        }
7409        aContent->RemoveChildNode(lastChild, true, nullptr, nullptr,
7410                                  aMutationEffectOnScript);
7411      }
7412    }
7413 
7414    if (aContent->HasChildren()) {
7415      return NS_OK;
7416    }
7417  } else {
7418    mb.Init(aContent, true, false);
7419    aContent->RemoveAllChildren(true);
7420  }
7421  mb.RemovalDone();
7422 
7423  if (aValue.IsEmpty()) {
7424    return NS_OK;
7425  }
7426 
7427  RefPtr<nsTextNode> textContent = new (aContent->NodeInfo()->NodeInfoManager())
7428      nsTextNode(aContent->NodeInfo()->NodeInfoManager());
7429 
7430  textContent->SetText(aValue, true);
7431 
7432  ErrorResult rv;
7433  aContent->AppendChildTo(textContent, true, rv, aMutationEffectOnScript);
7434  mb.NodesAdded();
7435  return rv.StealNSResult();
7436}
7437 
7438template <typename CharT>
7439static bool AppendNodeTextContentsRecurse(const nsINode* aNode,
7440                                          nsTSubstring<CharT>& aResult,
7441                                          const fallible_t& aFallible) {
7442  for (nsIContent* child = aNode->GetFirstChild(); child;
7443       child = child->GetNextSibling()) {
7444    if (child->IsElement()) {
7445      if (!AppendNodeTextContentsRecurse(child, aResult, aFallible)) {
7446        return false;
7447      }
7448    } else if (Text* text = child->GetAsText()) {
7449      if (!text->AppendTextTo(aResult, aFallible)) {
7450        return false;
7451      }
7452    }
7453  }
7454  return true;
7455}
7456 
7457template <typename CharT>
7458static bool AppendNodeTextContent(const nsINode* aNode, bool aDeep,
7459                                  nsTSubstring<CharT>& aResult,
7460                                  const fallible_t& aFallible) {
7461  if (const Text* text = aNode->GetAsText()) {
7462    return text->AppendTextTo(aResult, aFallible);
7463  }
7464  if (aDeep) {
7465    return AppendNodeTextContentsRecurse(aNode, aResult, aFallible);
7466  }
7467  for (nsIContent* child = aNode->GetFirstChild(); child;
7468       child = child->GetNextSibling()) {
7469    if (Text* text = child->GetAsText()) {
7470      bool ok = text->AppendTextTo(aResult, fallible);
7471      if (!ok) {
7472        return false;
7473      }
7474    }
7475  }
7476  return true;
7477}
7478 
7479/* static */
7480bool nsContentUtils::AppendNodeTextContent(const nsINode* aNode, bool aDeep,
7481                                           nsAString& aResult,
7482                                           const fallible_t& aFallible) {
7483  return ::AppendNodeTextContent(aNode, aDeep, aResult, aFallible);
7484}
7485 
7486bool nsContentUtils::AppendNodeTextContent(const nsINode* aNode, bool aDeep,
7487                                           nsACString& aResult,
7488                                           const fallible_t& aFallible) {
7489  return ::AppendNodeTextContent(aNode, aDeep, aResult, aFallible);
7490}
7491 
7492bool nsContentUtils::HasNonEmptyTextContent(
7493    nsINode* aNode, TextContentDiscoverMode aDiscoverMode) {
7494  for (nsIContent* child = aNode->GetFirstChild(); child;
7495       child = child->GetNextSibling()) {
7496    if (child->IsText() && child->TextLength() > 0) {
7497      return true;
7498    }
7499 
7500    if (aDiscoverMode == eRecurseIntoChildren &&
7501        HasNonEmptyTextContent(child, aDiscoverMode)) {
7502      return true;
7503    }
7504  }
7505 
7506  return false;
7507}
7508 
7509/* static */
7510bool nsContentUtils::IsInSameAnonymousTree(const nsINode* aNode,
7511                                           const nsINode* aOtherNode) {
7512  MOZ_ASSERT(aNode, "Must have a node to work with")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(aNode))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("aNode" " (" "Must have a node to work with"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7512
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode" ") (" "Must have a node to work with"
 ")"); do { MOZ_CrashSequence(__null, 7512); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7513  MOZ_ASSERT(aOtherNode, "Must have a content to work with")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aOtherNode)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aOtherNode))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("aOtherNode" " (" "Must have a content to work with"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7513
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aOtherNode" ") ("
 "Must have a content to work with" ")"); do { MOZ_CrashSequence
(__null, 7513); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7514 
7515  const bool anon = aNode->IsInNativeAnonymousSubtree();
7516  if (anon != aOtherNode->IsInNativeAnonymousSubtree()) {
7517    return false;
7518  }
7519 
7520  if (anon) {
7521    return aOtherNode->GetClosestNativeAnonymousSubtreeRoot() ==
7522           aNode->GetClosestNativeAnonymousSubtreeRoot();
7523  }
7524 
7525  // FIXME: This doesn't deal with disconnected nodes whatsoever, but it didn't
7526  // use to either. Maybe that's fine.
7527  return aNode->GetContainingShadow() == aOtherNode->GetContainingShadow();
7528}
7529 
7530/* static */
7531bool nsContentUtils::IsInInteractiveHTMLContent(const Element* aElement,
7532                                                const Element* aStop) {
7533  const Element* element = aElement;
7534  while (element && element != aStop) {
7535    if (element->IsInteractiveHTMLContent()) {
7536      return true;
7537    }
7538    element = element->GetFlattenedTreeParentElement();
7539  }
7540  return false;
7541}
7542 
7543/* static */
7544void nsContentUtils::NotifyInstalledMenuKeyboardListener(bool aInstalling) {
7545  IMEStateManager::OnInstalledMenuKeyboardListener(aInstalling);
7546}
7547 
7548/* static */
7549bool nsContentUtils::SchemeIs(nsIURI* aURI, const char* aScheme) {
7550  nsCOMPtr<nsIURI> baseURI = NS_GetInnermostURI(aURI);
7551  NS_ENSURE_TRUE(baseURI, false)do { if ((__builtin_expect(!!(!(baseURI)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "baseURI" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7551); return
 false; } } while (false);
7552  return baseURI->SchemeIs(aScheme);
7553}
7554 
7555bool nsContentUtils::IsExpandedPrincipal(nsIPrincipal* aPrincipal) {
7556  return aPrincipal && aPrincipal->GetIsExpandedPrincipal();
7557}
7558 
7559bool nsContentUtils::IsSystemOrExpandedPrincipal(nsIPrincipal* aPrincipal) {
7560  return (aPrincipal && aPrincipal->IsSystemPrincipal()) ||
7561         IsExpandedPrincipal(aPrincipal);
7562}
7563 
7564nsIPrincipal* nsContentUtils::GetSystemPrincipal() {
7565  MOZ_ASSERT(IsInitialized())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(IsInitialized())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(IsInitialized()))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("IsInitialized()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7565); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "IsInitialized()" ")"); do { MOZ_CrashSequence
(__null, 7565); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7566  return sSystemPrincipal;
7567}
7568 
7569bool nsContentUtils::CombineResourcePrincipals(
7570    nsCOMPtr<nsIPrincipal>* aResourcePrincipal, nsIPrincipal* aExtraPrincipal) {
7571  if (!aExtraPrincipal) {
7572    return false;
7573  }
7574  if (!*aResourcePrincipal) {
7575    *aResourcePrincipal = aExtraPrincipal;
7576    return true;
7577  }
7578  if (*aResourcePrincipal == aExtraPrincipal) {
7579    return false;
7580  }
7581  bool subsumes;
7582  if (NS_SUCCEEDED(((bool)(__builtin_expect(!!(!NS_FAILED_impl((*aResourcePrincipal
)->Subsumes(aExtraPrincipal, &subsumes))), 1)))
7583          (*aResourcePrincipal)->Subsumes(aExtraPrincipal, &subsumes))((bool)(__builtin_expect(!!(!NS_FAILED_impl((*aResourcePrincipal
)->Subsumes(aExtraPrincipal, &subsumes))), 1))) &&
7584      subsumes) {
7585    return false;
7586  }
7587  *aResourcePrincipal = sSystemPrincipal;
7588  return true;
7589}
7590 
7591/* static */
7592void nsContentUtils::TriggerLinkClick(
7593    nsIContent* aContent, nsIURI* aLinkURI, const nsString& aTargetSpec,
7594    UserNavigationInvolvement aUserInvolvement) {
7595  MOZ_ASSERT(aLinkURI, "No link URI")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aLinkURI)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aLinkURI))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aLinkURI" " (" "No link URI"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7595
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aLinkURI" ") (" "No link URI"
 ")"); do { MOZ_CrashSequence(__null, 7595); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7596 
7597  if (aContent->IsEditable() || !aContent->OwnerDoc()->LinkHandlingEnabled()) {
7598    return;
7599  }
7600 
7601  RefPtr<nsDocShell> docShell =
7602      nsDocShell::Cast(aContent->OwnerDoc()->GetDocShell());
7603  if (!docShell) {
7604    return;
7605  }
7606 
7607  // Check that this page is allowed to load this URI.
7608  nsresult proceed = NS_OK;
7609 
7610  if (sSecurityManager) {
7611    uint32_t flag = static_cast<uint32_t>(nsIScriptSecurityManager::STANDARD);
7612    proceed = sSecurityManager->CheckLoadURIWithPrincipal(
7613        aContent->NodePrincipal(), aLinkURI, flag,
7614        aContent->OwnerDoc()->InnerWindowID());
7615  }
7616 
7617  // Only pass off the click event if the script security manager says it's ok.
7618  // We need to rest aTargetSpec for forced downloads.
7619  if (NS_SUCCEEDED(proceed)((bool)(__builtin_expect(!!(!NS_FAILED_impl(proceed)), 1)))) {
7620    // A link/area element with a download attribute is allowed to set
7621    // a pseudo Content-Disposition header.
7622    // For security reasons we only allow websites to declare same-origin
7623    // resources as downloadable. If this check fails we will just do the normal
7624    // thing (i.e. navigate to the resource).
7625    nsAutoString fileName;
7626    if ((!aContent->IsHTMLElement(nsGkAtoms::a) &&
7627         !aContent->IsHTMLElement(nsGkAtoms::area) &&
7628         !aContent->IsSVGElement(nsGkAtoms::a)) ||
7629        !aContent->AsElement()->GetAttr(nsGkAtoms::download, fileName) ||
7630        NS_FAILED(aContent->NodePrincipal()->CheckMayLoad(aLinkURI, true))((bool)(__builtin_expect(!!(NS_FAILED_impl(aContent->NodePrincipal
()->CheckMayLoad(aLinkURI, true))), 0)))) {
7631      fileName.SetIsVoid(true);  // No actionable download attribute was found.
7632    }
7633 
7634    nsCOMPtr<nsIPrincipal> triggeringPrincipal = aContent->NodePrincipal();
7635    nsCOMPtr<nsIPolicyContainer> policyContainer =
7636        aContent->GetPolicyContainer();
7637 
7638    // Sanitize fileNames containing null characters by replacing them with
7639    // underscores.
7640    if (!fileName.IsVoid()) {
7641      fileName.ReplaceChar(char16_t(0), '_');
7642    }
7643 
7644    docShell->OnLinkClick(
7645        aContent, aLinkURI, fileName.IsVoid() ? aTargetSpec : u""_ns, fileName,
7646        nullptr, nullptr, UserActivation::IsHandlingUserInput(),
7647        aUserInvolvement, triggeringPrincipal, policyContainer);
7648  }
7649}
7650 
7651/* static */
7652void nsContentUtils::TriggerLinkMouseOver(nsIContent* aContent,
7653                                          nsIURI* aLinkURI,
7654                                          const nsString& aTargetSpec) {
7655  MOZ_ASSERT(aLinkURI, "No link URI")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aLinkURI)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aLinkURI))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aLinkURI" " (" "No link URI"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7655
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aLinkURI" ") (" "No link URI"
 ")"); do { MOZ_CrashSequence(__null, 7655); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7656 
7657  if (aContent->IsEditable() || !aContent->OwnerDoc()->LinkHandlingEnabled()) {
7658    return;
7659  }
7660 
7661  RefPtr<nsDocShell> docShell =
7662      nsDocShell::Cast(aContent->OwnerDoc()->GetDocShell());
7663  if (!docShell) {
7664    return;
7665  }
7666 
7667  docShell->OnOverLink(aContent, aLinkURI, aTargetSpec);
7668 
7669  if (nsPresContext* pc = aContent->OwnerDoc()->GetPresContext()) {
7670    pc->EventStateManager()->SetLinkOverFrame(aContent->GetPrimaryFrame());
7671  }
7672}
7673 
7674/* static */
7675void nsContentUtils::GetLinkLocation(Element* aElement,
7676                                     nsString& aLocationString) {
7677  nsCOMPtr<nsIURI> hrefURI = aElement->GetHrefURI();
7678  if (hrefURI) {
7679    nsAutoCString specUTF8;
7680    nsresult rv = hrefURI->GetSpec(specUTF8);
7681    if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))) CopyUTF8toUTF16(specUTF8, aLocationString);
7682  }
7683}
7684 
7685/* static */
7686nsIWidget* nsContentUtils::GetTopLevelWidget(nsIWidget* aWidget) {
7687  if (!aWidget) return nullptr;
7688 
7689  return aWidget->GetTopLevelWidget();
7690}
7691 
7692/* static */
7693const nsDependentString nsContentUtils::GetLocalizedEllipsis() {
7694  static char16_t sBuf[4] = {0, 0, 0, 0};
7695  if (!sBuf[0]) {
7696    if (!nsContentUtils::ShouldResistFingerprinting("No context",
7697                                                    RFPTarget::JSLocale)) {
7698      nsAutoString tmp;
7699      intl::LocaleService::GetInstance()->GetEllipsis(tmp);
7700      uint32_t len =
7701          std::min(uint32_t(tmp.Length()), uint32_t(std::size(sBuf) - 1));
7702      CopyUnicodeTo(tmp, 0, sBuf, len);
7703    }
7704    if (!sBuf[0]) {
7705      sBuf[0] = char16_t(0x2026);
7706    }
7707  }
7708  return nsDependentString(sBuf);
7709}
7710 
7711/* static */
7712void nsContentUtils::AddScriptBlocker() {
7713  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7713); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 7713); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7714  if (!sScriptBlockerCount) {
7715    MOZ_ASSERT(sRunnersCountAtFirstBlocker == 0,do { static_assert( mozilla::detail::AssertionConditionType<
decltype(sRunnersCountAtFirstBlocker == 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(sRunnersCountAtFirstBlocker ==
 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("sRunnersCountAtFirstBlocker == 0" " (" "Should not already have a count"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7716
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sRunnersCountAtFirstBlocker == 0"
 ") (" "Should not already have a count" ")"); do { MOZ_CrashSequence
(__null, 7716); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
7716               "Should not already have a count")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(sRunnersCountAtFirstBlocker == 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(sRunnersCountAtFirstBlocker ==
 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("sRunnersCountAtFirstBlocker == 0" " (" "Should not already have a count"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7716
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sRunnersCountAtFirstBlocker == 0"
 ") (" "Should not already have a count" ")"); do { MOZ_CrashSequence
(__null, 7716); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7717    sRunnersCountAtFirstBlocker =
7718        sBlockedScriptRunners ? sBlockedScriptRunners->Length() : 0;
7719  }
7720  ++sScriptBlockerCount;
7721}
7722 
7723#ifdef DEBUG1
7724static bool sRemovingScriptBlockers = false;
7725#endif
7726 
7727/* static */
7728void nsContentUtils::RemoveScriptBlocker() {
7729  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7729); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 7729); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7730  MOZ_ASSERT(!sRemovingScriptBlockers)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!sRemovingScriptBlockers)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!sRemovingScriptBlockers))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("!sRemovingScriptBlockers"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7730); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!sRemovingScriptBlockers" ")"); do { MOZ_CrashSequence
(__null, 7730); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7731  NS_ASSERTION(sScriptBlockerCount != 0, "Negative script blockers")do { if (!(sScriptBlockerCount != 0)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Negative script blockers", "sScriptBlockerCount != 0", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7731); MOZ_PretendNoReturn(); } } while (0);
7732  --sScriptBlockerCount;
7733  if (sScriptBlockerCount) {
7734    return;
7735  }
7736 
7737  if (!sBlockedScriptRunners) {
7738    return;
7739  }
7740 
7741  uint32_t firstBlocker = sRunnersCountAtFirstBlocker;
7742  uint32_t lastBlocker = sBlockedScriptRunners->Length();
7743  uint32_t originalFirstBlocker = firstBlocker;
7744  uint32_t blockersCount = lastBlocker - firstBlocker;
7745  sRunnersCountAtFirstBlocker = 0;
7746  NS_ASSERTION(firstBlocker <= lastBlocker, "bad sRunnersCountAtFirstBlocker")do { if (!(firstBlocker <= lastBlocker)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "bad sRunnersCountAtFirstBlocker", "firstBlocker <= lastBlocker"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7746); MOZ_PretendNoReturn
(); } } while (0);
7747 
7748  while (firstBlocker < lastBlocker) {
7749    nsCOMPtr<nsIRunnable> runnable;
7750    runnable.swap((*sBlockedScriptRunners)[firstBlocker]);
7751    ++firstBlocker;
7752 
7753    // Calling the runnable can reenter us
7754    {
7755      AUTO_PROFILE_FOLLOWING_RUNNABLE(runnable)mozilla::Maybe<mozilla::AutoProfileRunnable> raiiRunnableMarker
; if (profiler_thread_is_profiling_runnables()) { raiiRunnableMarker
.emplace(runnable); };
7756      runnable->Run();
7757    }
7758    // So can dropping the reference to the runnable
7759    runnable = nullptr;
7760 
7761    NS_ASSERTION(sRunnersCountAtFirstBlocker == 0, "Bad count")do { if (!(sRunnersCountAtFirstBlocker == 0)) { NS_DebugBreak
(NS_DEBUG_ASSERTION, "Bad count", "sRunnersCountAtFirstBlocker == 0"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7761); MOZ_PretendNoReturn
(); } } while (0);
7762    NS_ASSERTION(!sScriptBlockerCount, "This is really bad")do { if (!(!sScriptBlockerCount)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "This is really bad", "!sScriptBlockerCount", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7762); MOZ_PretendNoReturn(); } } while (0);
7763  }
7764#ifdef DEBUG1
7765  AutoRestore<bool> removingScriptBlockers(sRemovingScriptBlockers);
7766  sRemovingScriptBlockers = true;
7767#endif
7768  sBlockedScriptRunners->RemoveElementsAt(originalFirstBlocker, blockersCount);
7769}
7770 
7771/* static */
7772already_AddRefed<nsPIDOMWindowOuter>
7773nsContentUtils::GetMostRecentNonPBWindow() {
7774  nsCOMPtr<nsIWindowMediator> wm = do_GetService(NS_WINDOWMEDIATOR_CONTRACTID"@mozilla.org/appshell/window-mediator;1");
7775 
7776  nsCOMPtr<mozIDOMWindowProxy> window;
7777  wm->GetMostRecentNonPBWindow(u"navigator:browser", getter_AddRefs(window));
7778  nsCOMPtr<nsPIDOMWindowOuter> pwindow;
7779  pwindow = do_QueryInterface(window);
7780 
7781  return pwindow.forget();
7782}
7783 
7784/* static */
7785already_AddRefed<nsPIDOMWindowOuter> nsContentUtils::GetMostRecentWindowBy(
7786    WindowMediatorFilter aFilter) {
7787  nsCOMPtr<nsIWindowMediator> wm = do_GetService(NS_WINDOWMEDIATOR_CONTRACTID"@mozilla.org/appshell/window-mediator;1");
7788 
7789  nsCOMPtr<mozIDOMWindowProxy> window;
7790  wm->GetMostRecentWindowBy(u"navigator:browser", static_cast<uint8_t>(aFilter),
7791                            getter_AddRefs(window));
7792  nsCOMPtr<nsPIDOMWindowOuter> pwindow;
7793  pwindow = do_QueryInterface(window);
7794 
7795  return pwindow.forget();
7796}
7797 
7798/* static */
7799void nsContentUtils::WarnScriptWasIgnored(Document* aDocument) {
7800  nsAutoString msg;
7801  bool privateBrowsing = false;
7802  bool chromeContext = false;
7803 
7804  if (aDocument) {
7805    nsCOMPtr<nsIURI> uri = aDocument->GetDocumentURI();
7806    if (uri) {
7807      msg.Append(NS_ConvertUTF8toUTF16(uri->GetSpecOrDefault()));
7808      msg.AppendLiteral(" : ");
7809    }
7810    privateBrowsing =
7811        aDocument->NodePrincipal()->OriginAttributesRef().IsPrivateBrowsing();
7812    chromeContext = aDocument->NodePrincipal()->IsSystemPrincipal();
7813  }
7814 
7815  msg.AppendLiteral(
7816      "Unable to run script because scripts are blocked internally.");
7817  LogSimpleConsoleError(msg, "DOM"_ns, privateBrowsing, chromeContext);
7818}
7819 
7820/* static */
7821void nsContentUtils::AddScriptRunner(already_AddRefed<nsIRunnable> aRunnable) {
7822  nsCOMPtr<nsIRunnable> runnable = aRunnable;
7823  if (!runnable) {
7824    return;
7825  }
7826 
7827  if (sScriptBlockerCount) {
7828    PROFILER_MARKER("nsContentUtils::AddScriptRunner", OTHER, {}, FlowMarker,do { ; do { if (profiler_is_collecting_markers()) { ::profiler_add_marker_impl
("nsContentUtils::AddScriptRunner", ::geckoprofiler::category
::OTHER, {}, ::geckoprofiler::markers::FlowMarker{}, Flow::FromPointer
(runnable.get())); } } while (false); } while (false)
7829                    Flow::FromPointer(runnable.get()))do { ; do { if (profiler_is_collecting_markers()) { ::profiler_add_marker_impl
("nsContentUtils::AddScriptRunner", ::geckoprofiler::category
::OTHER, {}, ::geckoprofiler::markers::FlowMarker{}, Flow::FromPointer
(runnable.get())); } } while (false); } while (false);
7830    sBlockedScriptRunners->AppendElement(runnable.forget());
7831    return;
7832  }
7833 
7834  AUTO_PROFILE_FOLLOWING_RUNNABLE(runnable)mozilla::Maybe<mozilla::AutoProfileRunnable> raiiRunnableMarker
; if (profiler_thread_is_profiling_runnables()) { raiiRunnableMarker
.emplace(runnable); };
7835  runnable->Run();
7836}
7837 
7838/* static */
7839void nsContentUtils::AddScriptRunner(nsIRunnable* aRunnable) {
7840  nsCOMPtr<nsIRunnable> runnable = aRunnable;
7841  AddScriptRunner(runnable.forget());
7842}
7843 
7844/* static */ bool nsContentUtils::IsSafeToRunScript() {
7845  MOZ_ASSERT(NS_IsMainThread(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
 " (" "This static variable only makes sense on the main thread!"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7846
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "NS_IsMainThread()"
 ") (" "This static variable only makes sense on the main thread!"
 ")"); do { MOZ_CrashSequence(__null, 7846); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
7846             "This static variable only makes sense on the main thread!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
 " (" "This static variable only makes sense on the main thread!"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7846
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "NS_IsMainThread()"
 ") (" "This static variable only makes sense on the main thread!"
 ")"); do { MOZ_CrashSequence(__null, 7846); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
7847  return sScriptBlockerCount == 0;
7848}
7849 
7850/* static */
7851void nsContentUtils::RunInStableState(already_AddRefed<nsIRunnable> aRunnable) {
7852  MOZ_ASSERT(CycleCollectedJSContext::Get(), "Must be on a script thread!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(CycleCollectedJSContext::Get())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(CycleCollectedJSContext::Get
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("CycleCollectedJSContext::Get()" " (" "Must be on a script thread!"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7852
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "CycleCollectedJSContext::Get()"
 ") (" "Must be on a script thread!" ")"); do { MOZ_CrashSequence
(__null, 7852); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7853  CycleCollectedJSContext::Get()->RunInStableState(std::move(aRunnable));
7854}
7855 
7856/* static */
7857void nsContentUtils::AddPendingIDBTransaction(
7858    already_AddRefed<nsIRunnable> aTransaction) {
7859  MOZ_ASSERT(CycleCollectedJSContext::Get(), "Must be on a script thread!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(CycleCollectedJSContext::Get())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(CycleCollectedJSContext::Get
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("CycleCollectedJSContext::Get()" " (" "Must be on a script thread!"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7859
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "CycleCollectedJSContext::Get()"
 ") (" "Must be on a script thread!" ")"); do { MOZ_CrashSequence
(__null, 7859); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7860  CycleCollectedJSContext::Get()->AddPendingIDBTransaction(
7861      std::move(aTransaction));
7862}
7863 
7864/* static */
7865bool nsContentUtils::IsInStableOrMetaStableState() {
7866  MOZ_ASSERT(CycleCollectedJSContext::Get(), "Must be on a script thread!")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(CycleCollectedJSContext::Get())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(CycleCollectedJSContext::Get
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("CycleCollectedJSContext::Get()" " (" "Must be on a script thread!"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7866
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "CycleCollectedJSContext::Get()"
 ") (" "Must be on a script thread!" ")"); do { MOZ_CrashSequence
(__null, 7866); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
7867  return CycleCollectedJSContext::Get()->IsInStableOrMetaStableState();
7868}
7869 
7870/* static */
7871void nsContentUtils::HidePopupsInDocument(Document* aDocument) {
7872  RefPtr<nsXULPopupManager> pm = nsXULPopupManager::GetInstance();
7873  if (!pm || !aDocument) {
7874    return;
7875  }
7876  nsCOMPtr<nsIDocShellTreeItem> docShellToHide = aDocument->GetDocShell();
7877  if (docShellToHide) {
7878    pm->HidePopupsInDocShell(docShellToHide);
7879  }
7880}
7881 
7882/* static */
7883already_AddRefed<nsIDragSession> nsContentUtils::GetDragSession(
7884    nsIWidget* aWidget) {
7885  nsCOMPtr<nsIDragSession> dragSession;
7886  nsCOMPtr<nsIDragService> dragService =
7887      do_GetService("@mozilla.org/widget/dragservice;1");
7888  if (dragService) {
7889    dragSession = dragService->GetCurrentSession(aWidget);
7890  }
7891  return dragSession.forget();
7892}
7893 
7894/* static */
7895already_AddRefed<nsIDragSession> nsContentUtils::GetDragSession(
7896    nsPresContext* aPC) {
7897  NS_ENSURE_TRUE(aPC, nullptr)do { if ((__builtin_expect(!!(!(aPC)), 0))) { NS_DebugBreak(NS_DEBUG_WARNING
, "NS_ENSURE_TRUE(" "aPC" ") failed", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7897); return nullptr; } } while (false);
7898  auto* widget = aPC->GetRootWidget();
7899  if (!widget) {
7900    return nullptr;
7901  }
7902  return GetDragSession(widget);
7903}
7904 
7905/* static */
7906nsresult nsContentUtils::SetDataTransferInEvent(WidgetDragEvent* aDragEvent) {
7907  if (aDragEvent->mDataTransfer || !aDragEvent->IsTrusted()) {
7908    return NS_OK;
7909  }
7910 
7911  // For dragstart events, the data transfer object is
7912  // created before the event fires, so it should already be set. For other
7913  // drag events, get the object from the drag session.
7914  NS_ASSERTION(aDragEvent->mMessage != eDragStart,do { if (!(aDragEvent->mMessage != eDragStart)) { NS_DebugBreak
(NS_DEBUG_ASSERTION, "draggesture event created without a dataTransfer"
, "aDragEvent->mMessage != eDragStart", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7915); MOZ_PretendNoReturn(); } } while (0)
7915               "draggesture event created without a dataTransfer")do { if (!(aDragEvent->mMessage != eDragStart)) { NS_DebugBreak
(NS_DEBUG_ASSERTION, "draggesture event created without a dataTransfer"
, "aDragEvent->mMessage != eDragStart", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 7915); MOZ_PretendNoReturn(); } } while (0);
7916 
7917  nsCOMPtr<nsIDragSession> dragSession = GetDragSession(aDragEvent->mWidget);
7918  NS_ENSURE_TRUE(dragSession, NS_OK)do { if ((__builtin_expect(!!(!(dragSession)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "dragSession" ") failed"
, nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 7918); return NS_OK; } } while (false);  // no drag in progress
7919 
7920  RefPtr<DataTransfer> initialDataTransfer = dragSession->GetDataTransfer();
7921  if (!initialDataTransfer) {
7922    // A dataTransfer won't exist when a drag was started by some other
7923    // means, for instance calling the drag service directly, or a drag
7924    // from another application. In either case, a new dataTransfer should
7925    // be created that reflects the data.
7926    initialDataTransfer = new DataTransfer(
7927        aDragEvent->mTarget, aDragEvent->mMessage, true, Nothing());
7928 
7929    // now set it in the drag session so we don't need to create it again
7930    dragSession->SetDataTransfer(initialDataTransfer);
7931  }
7932 
7933  bool isCrossDomainSubFrameDrop = false;
7934  if (aDragEvent->mMessage == eDrop) {
7935    isCrossDomainSubFrameDrop = CheckForSubFrameDrop(dragSession, aDragEvent);
7936  }
7937 
7938  // each event should use a clone of the original dataTransfer.
7939  initialDataTransfer->Clone(
7940      aDragEvent->mTarget, aDragEvent->mMessage, aDragEvent->mUserCancelled,
7941      isCrossDomainSubFrameDrop, getter_AddRefs(aDragEvent->mDataTransfer));
7942  if (NS_WARN_IF(!aDragEvent->mDataTransfer)NS_warn_if_impl(!aDragEvent->mDataTransfer, "!aDragEvent->mDataTransfer"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 7942)) {
7943    return NS_ERROR_OUT_OF_MEMORY;
7944  }
7945 
7946  // for the dragenter and dragover events, initialize the drop effect
7947  // from the drop action, which platform specific widget code sets before
7948  // the event is fired based on the keyboard state.
7949  if (aDragEvent->mMessage == eDragEnter || aDragEvent->mMessage == eDragOver) {
7950    uint32_t action;
7951    dragSession->GetDragAction(&action);
7952    uint32_t effectAllowed = aDragEvent->mDataTransfer->EffectAllowedInt();
7953    aDragEvent->mDataTransfer->SetDropEffectInt(
7954        FilterDropEffect(action, effectAllowed));
7955  } else if (aDragEvent->mMessage == eDrop ||
7956             aDragEvent->mMessage == eDragEnd) {
7957    // For the drop and dragend events, set the drop effect based on the
7958    // last value that the dropEffect had. This will have been set in
7959    // EventStateManager::PostHandleEvent for the last dragenter or
7960    // dragover event.
7961    aDragEvent->mDataTransfer->SetDropEffectInt(
7962        initialDataTransfer->DropEffectInt());
7963  }
7964 
7965  return NS_OK;
7966}
7967 
7968/* static */
7969uint32_t nsContentUtils::FilterDropEffect(uint32_t aAction,
7970                                          uint32_t aEffectAllowed) {
7971  // It is possible for the drag action to include more than one action, but
7972  // the widget code which sets the action from the keyboard state should only
7973  // be including one. If multiple actions were set, we just consider them in
7974  //  the following order:
7975  //   copy, link, move
7976  if (aAction & nsIDragService::DRAGDROP_ACTION_COPY)
7977    aAction = nsIDragService::DRAGDROP_ACTION_COPY;
7978  else if (aAction & nsIDragService::DRAGDROP_ACTION_LINK)
7979    aAction = nsIDragService::DRAGDROP_ACTION_LINK;
7980  else if (aAction & nsIDragService::DRAGDROP_ACTION_MOVE)
7981    aAction = nsIDragService::DRAGDROP_ACTION_MOVE;
7982 
7983  // Filter the action based on the effectAllowed. If the effectAllowed
7984  // doesn't include the action, then that action cannot be done, so adjust
7985  // the action to something that is allowed. For a copy, adjust to move or
7986  // link. For a move, adjust to copy or link. For a link, adjust to move or
7987  // link. Otherwise, use none.
7988  if (aAction & aEffectAllowed ||
7989      aEffectAllowed == nsIDragService::DRAGDROP_ACTION_UNINITIALIZED)
7990    return aAction;
7991  if (aEffectAllowed & nsIDragService::DRAGDROP_ACTION_MOVE)
7992    return nsIDragService::DRAGDROP_ACTION_MOVE;
7993  if (aEffectAllowed & nsIDragService::DRAGDROP_ACTION_COPY)
7994    return nsIDragService::DRAGDROP_ACTION_COPY;
7995  if (aEffectAllowed & nsIDragService::DRAGDROP_ACTION_LINK)
7996    return nsIDragService::DRAGDROP_ACTION_LINK;
7997  return nsIDragService::DRAGDROP_ACTION_NONE;
7998}
7999 
8000/* static */
8001bool nsContentUtils::CheckForSubFrameDrop(nsIDragSession* aDragSession,
8002                                          WidgetDragEvent* aDropEvent) {
8003  nsCOMPtr<nsIContent> target =
8004      nsIContent::FromEventTargetOrNull(aDropEvent->mOriginalTarget);
8005  if (!target) {
8006    return true;
8007  }
8008 
8009  // Always allow dropping onto chrome shells.
8010  BrowsingContext* targetBC = target->OwnerDoc()->GetBrowsingContext();
8011  if (targetBC->IsChrome()) {
8012    return false;
8013  }
8014 
8015  WindowContext* targetWC = target->OwnerDoc()->GetWindowContext();
8016 
8017  // If there is no source browsing context, then this is a drag from another
8018  // application, which should be allowed.
8019  RefPtr<WindowContext> sourceWC;
8020  aDragSession->GetSourceWindowContext(getter_AddRefs(sourceWC));
8021  if (sourceWC) {
8022    // Get each successive parent of the source document and compare it to
8023    // the drop document. If they match, then this is a drag from a child frame.
8024    for (sourceWC = sourceWC->GetParentWindowContext(); sourceWC;
8025         sourceWC = sourceWC->GetParentWindowContext()) {
8026      // If the source and the target match, then the drag started in a
8027      // descendant frame. If the source is discarded, err on the side of
8028      // caution and treat it as a subframe drag.
8029      if (sourceWC == targetWC || sourceWC->IsDiscarded()) {
8030        return true;
8031      }
8032    }
8033  }
8034 
8035  return false;
8036}
8037 
8038/* static */
8039bool nsContentUtils::URIIsLocalFile(nsIURI* aURI) {
8040  bool isFile;
8041  nsCOMPtr<nsINetUtil> util = mozilla::components::IO::Service();
8042 
8043  // Important: we do NOT test the entire URI chain here!
8044  return util &&
8045         NS_SUCCEEDED(util->ProtocolHasFlags(((bool)(__builtin_expect(!!(!NS_FAILED_impl(util->ProtocolHasFlags
( aURI, nsIProtocolHandler::URI_IS_LOCAL_FILE, &isFile)))
, 1)))
8046             aURI, nsIProtocolHandler::URI_IS_LOCAL_FILE, &isFile))((bool)(__builtin_expect(!!(!NS_FAILED_impl(util->ProtocolHasFlags
( aURI, nsIProtocolHandler::URI_IS_LOCAL_FILE, &isFile)))
, 1))) &&
8047         isFile;
8048}
8049 
8050/* static */
8051JSContext* nsContentUtils::GetCurrentJSContext() {
8052  MOZ_ASSERT(IsInitialized())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(IsInitialized())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(IsInitialized()))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("IsInitialized()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8052); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "IsInitialized()" ")"); do { MOZ_CrashSequence
(__null, 8052); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
8053  if (!IsJSAPIActive()) {
8054    return nullptr;
8055  }
8056  return danger::GetJSContext();
8057}
8058 
8059template <typename StringType, typename CharType>
8060void _ASCIIToLowerInSitu(StringType& aStr) {
8061  CharType* iter = aStr.BeginWriting();
8062  CharType* end = aStr.EndWriting();
8063  MOZ_ASSERT(iter && end)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(iter && end)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(iter && end))), 0)))
 { do { } while (false); MOZ_ReportAssertionFailure("iter && end"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8063); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "iter && end" ")"); do { MOZ_CrashSequence
(__null, 8063); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
8064 
8065  while (iter != end) {
8066    CharType c = *iter;
8067    if (c >= 'A' && c <= 'Z') {
8068      *iter = c + ('a' - 'A');
8069    }
8070    ++iter;
8071  }
8072}
8073 
8074/* static */
8075void nsContentUtils::ASCIIToLower(nsAString& aStr) {
8076  return _ASCIIToLowerInSitu<nsAString, char16_t>(aStr);
8077}
8078 
8079/* static */
8080void nsContentUtils::ASCIIToLower(nsACString& aStr) {
8081  return _ASCIIToLowerInSitu<nsACString, char>(aStr);
8082}
8083 
8084template <typename StringType, typename CharType>
8085void _ASCIIToLowerCopy(const StringType& aSource, StringType& aDest) {
8086  uint32_t len = aSource.Length();
8087  aDest.SetLength(len);
8088  MOZ_ASSERT(aDest.Length() == len)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aDest.Length() == len)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aDest.Length() == len))), 0)
)) { do { } while (false); MOZ_ReportAssertionFailure("aDest.Length() == len"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8088); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aDest.Length() == len" ")"); do { MOZ_CrashSequence
(__null, 8088); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
8089 
8090  CharType* dest = aDest.BeginWriting();
8091  MOZ_ASSERT(dest)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(dest)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(dest))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("dest", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8091); AnnotateMozCrashReason("MOZ_ASSERT" "(" "dest" ")");
 do { MOZ_CrashSequence(__null, 8091); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
8092 
8093  const CharType* iter = aSource.BeginReading();
8094  const CharType* end = aSource.EndReading();
8095  while (iter != end) {
8096    CharType c = *iter;
8097    *dest = (c >= 'A' && c <= 'Z') ? c + ('a' - 'A') : c;
8098    ++iter;
8099    ++dest;
8100  }
8101}
8102 
8103/* static */
8104void nsContentUtils::ASCIIToLower(const nsAString& aSource, nsAString& aDest) {
8105  return _ASCIIToLowerCopy<nsAString, char16_t>(aSource, aDest);
8106}
8107 
8108/* static */
8109void nsContentUtils::ASCIIToLower(const nsACString& aSource,
8110                                  nsACString& aDest) {
8111  return _ASCIIToLowerCopy<nsACString, char>(aSource, aDest);
8112}
8113 
8114template <typename StringType, typename CharType>
8115void _ASCIIToUpperInSitu(StringType& aStr) {
8116  CharType* iter = aStr.BeginWriting();
8117  CharType* end = aStr.EndWriting();
8118  MOZ_ASSERT(iter && end)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(iter && end)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(iter && end))), 0)))
 { do { } while (false); MOZ_ReportAssertionFailure("iter && end"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8118); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "iter && end" ")"); do { MOZ_CrashSequence
(__null, 8118); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
8119 
8120  while (iter != end) {
8121    CharType c = *iter;
8122    if (c >= 'a' && c <= 'z') {
8123      *iter = c + ('A' - 'a');
8124    }
8125    ++iter;
8126  }
8127}
8128 
8129/* static */
8130void nsContentUtils::ASCIIToUpper(nsAString& aStr) {
8131  return _ASCIIToUpperInSitu<nsAString, char16_t>(aStr);
8132}
8133 
8134/* static */
8135void nsContentUtils::ASCIIToUpper(nsACString& aStr) {
8136  return _ASCIIToUpperInSitu<nsACString, char>(aStr);
8137}
8138 
8139template <typename StringType, typename CharType>
8140void _ASCIIToUpperCopy(const StringType& aSource, StringType& aDest) {
8141  uint32_t len = aSource.Length();
8142  aDest.SetLength(len);
8143  MOZ_ASSERT(aDest.Length() == len)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aDest.Length() == len)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aDest.Length() == len))), 0)
)) { do { } while (false); MOZ_ReportAssertionFailure("aDest.Length() == len"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8143); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aDest.Length() == len" ")"); do { MOZ_CrashSequence
(__null, 8143); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
8144 
8145  CharType* dest = aDest.BeginWriting();
8146  MOZ_ASSERT(dest)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(dest)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(dest))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("dest", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8146); AnnotateMozCrashReason("MOZ_ASSERT" "(" "dest" ")");
 do { MOZ_CrashSequence(__null, 8146); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
8147 
8148  const CharType* iter = aSource.BeginReading();
8149  const CharType* end = aSource.EndReading();
8150  while (iter != end) {
8151    CharType c = *iter;
8152    *dest = (c >= 'a' && c <= 'z') ? c + ('A' - 'a') : c;
8153    ++iter;
8154    ++dest;
8155  }
8156}
8157 
8158/* static */
8159void nsContentUtils::ASCIIToUpper(const nsAString& aSource, nsAString& aDest) {
8160  return _ASCIIToUpperCopy<nsAString, char16_t>(aSource, aDest);
8161}
8162 
8163/* static */
8164void nsContentUtils::ASCIIToUpper(const nsACString& aSource,
8165                                  nsACString& aDest) {
8166  return _ASCIIToUpperCopy<nsACString, char>(aSource, aDest);
8167}
8168 
8169/* static */
8170bool nsContentUtils::EqualsIgnoreASCIICase(nsAtom* aAtom1, nsAtom* aAtom2) {
8171  if (aAtom1 == aAtom2) {
8172    return true;
8173  }
8174 
8175  // If both are ascii lowercase already, we know that the slow comparison
8176  // below is going to return false.
8177  if (aAtom1->IsAsciiLowercase() && aAtom2->IsAsciiLowercase()) {
8178    return false;
8179  }
8180 
8181  return EqualsIgnoreASCIICase(nsDependentAtomString(aAtom1),
8182                               nsDependentAtomString(aAtom2));
8183}
8184 
8185/* static */
8186bool nsContentUtils::EqualsIgnoreASCIICase(const nsAString& aStr1,
8187                                           const nsAString& aStr2) {
8188  uint32_t len = aStr1.Length();
8189  if (len != aStr2.Length()) {
8190    return false;
8191  }
8192 
8193  const char16_t* str1 = aStr1.BeginReading();
8194  const char16_t* str2 = aStr2.BeginReading();
8195  const char16_t* end = str1 + len;
8196 
8197  while (str1 < end) {
8198    char16_t c1 = *str1++;
8199    char16_t c2 = *str2++;
8200 
8201    // First check if any bits other than the 0x0020 differs
8202    if ((c1 ^ c2) & 0xffdf) {
8203      return false;
8204    }
8205 
8206    // We know they can only differ in the 0x0020 bit.
8207    // Likely the two chars are the same, so check that first
8208    if (c1 != c2) {
8209      // They do differ, but since it's only in the 0x0020 bit, check if it's
8210      // the same ascii char, but just differing in case
8211      char16_t c1Upper = c1 & 0xffdf;
8212      if (!('A' <= c1Upper && c1Upper <= 'Z')) {
8213        return false;
8214      }
8215    }
8216  }
8217 
8218  return true;
8219}
8220 
8221/* static */
8222bool nsContentUtils::StringContainsASCIIUpper(const nsAString& aStr) {
8223  const char16_t* iter = aStr.BeginReading();
8224  const char16_t* end = aStr.EndReading();
8225  while (iter != end) {
8226    char16_t c = *iter;
8227    if (c >= 'A' && c <= 'Z') {
8228      return true;
8229    }
8230    ++iter;
8231  }
8232 
8233  return false;
8234}
8235 
8236/* static */
8237nsIInterfaceRequestor* nsContentUtils::SameOriginChecker() {
8238  if (!sSameOriginChecker) {
8239    sSameOriginChecker = new SameOriginCheckerImpl();
8240    NS_ADDREF(sSameOriginChecker)(sSameOriginChecker)->AddRef();
8241  }
8242  return sSameOriginChecker;
8243}
8244 
8245/* static */
8246nsresult nsContentUtils::CheckSameOrigin(nsIChannel* aOldChannel,
8247                                         nsIChannel* aNewChannel) {
8248  if (!nsContentUtils::GetSecurityManager()) return NS_ERROR_NOT_AVAILABLE;
8249 
8250  nsCOMPtr<nsIPrincipal> oldPrincipal;
8251  nsContentUtils::GetSecurityManager()->GetChannelResultPrincipal(
8252      aOldChannel, getter_AddRefs(oldPrincipal));
8253 
8254  nsCOMPtr<nsIURI> newURI;
8255  aNewChannel->GetURI(getter_AddRefs(newURI));
8256  nsCOMPtr<nsIURI> newOriginalURI;
8257  aNewChannel->GetOriginalURI(getter_AddRefs(newOriginalURI));
8258 
8259  NS_ENSURE_STATE(oldPrincipal && newURI && newOriginalURI)do { if ((__builtin_expect(!!(!(oldPrincipal && newURI
 && newOriginalURI)), 0))) { NS_DebugBreak(NS_DEBUG_WARNING
, "NS_ENSURE_TRUE(" "oldPrincipal && newURI && newOriginalURI"
 ") failed", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8259); return NS_ERROR_UNEXPECTED; } } while (false);
8260 
8261  nsresult rv = oldPrincipal->CheckMayLoad(newURI, false);
8262  if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))) && newOriginalURI != newURI) {
8263    rv = oldPrincipal->CheckMayLoad(newOriginalURI, false);
8264  }
8265 
8266  return rv;
8267}
8268 
8269NS_IMPL_ISUPPORTS(SameOriginCheckerImpl, nsIChannelEventSink,MozExternalRefCountType SameOriginCheckerImpl::AddRef(void) {
 static_assert(!std::is_destructible_v<SameOriginCheckerImpl
>, "Reference-counted class " "SameOriginCheckerImpl" " should not have a public destructor. "
 "Make this class's destructor non-public"); do { static_assert
( mozilla::detail::AssertionConditionType<decltype(int32_t
(mRefCnt) >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) >= 0))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) >= 0"
 " (" "illegal refcnt" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8270); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0"
 ") (" "illegal refcnt" ")"); do { MOZ_CrashSequence(__null, 8270
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false); do { static_assert( mozilla::detail::AssertionConditionType
<decltype("SameOriginCheckerImpl" != nullptr)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!("SameOriginCheckerImpl" != nullptr))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("\"SameOriginCheckerImpl\" != nullptr"
 " (" "Must specify a name" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8270); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"SameOriginCheckerImpl\" != nullptr"
 ") (" "Must specify a name" ")"); do { MOZ_CrashSequence(__null
, 8270); __attribute__((nomerge)) ::abort(); } while (false);
 } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread
.AssertOwnership("SameOriginCheckerImpl" " not thread-safe");
 nsrefcnt count = ++mRefCnt; NS_LogAddRef((this), (count), ("SameOriginCheckerImpl"
), (uint32_t)(sizeof(*this))); return count; } MozExternalRefCountType
 SameOriginCheckerImpl::Release(void) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(int32_t(mRefCnt)
 > 0)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(int32_t(mRefCnt) > 0))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("int32_t(mRefCnt) > 0" " (" "dup release"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8270
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0"
 ") (" "dup release" ")"); do { MOZ_CrashSequence(__null, 8270
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false); do { static_assert( mozilla::detail::AssertionConditionType
<decltype("SameOriginCheckerImpl" != nullptr)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!("SameOriginCheckerImpl" != nullptr))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("\"SameOriginCheckerImpl\" != nullptr"
 " (" "Must specify a name" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8270); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"SameOriginCheckerImpl\" != nullptr"
 ") (" "Must specify a name" ")"); do { MOZ_CrashSequence(__null
, 8270); __attribute__((nomerge)) ::abort(); } while (false);
 } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread
.AssertOwnership("SameOriginCheckerImpl" " not thread-safe");
 const char* const nametmp = "SameOriginCheckerImpl"; nsrefcnt
 count = --mRefCnt; NS_LogRelease((this), (count), (nametmp))
; if (count == 0) { mRefCnt = 1; delete (this); return 0; } return
 count; } nsresult SameOriginCheckerImpl::QueryInterface(const
 nsIID& aIID, void** aInstancePtr) { do { if (!(aInstancePtr
)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "QueryInterface requires a non-NULL destination!"
, "aInstancePtr", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8270); MOZ_PretendNoReturn(); } } while (0); nsresult rv = NS_ERROR_FAILURE
; static_assert(2 > 0, "Need more arguments to NS_INTERFACE_TABLE"
); static const QITableEntry table[] = { {&mozilla::detail
::kImplementedIID<SameOriginCheckerImpl, nsIChannelEventSink
>, int32_t( reinterpret_cast<char*>(static_cast<nsIChannelEventSink
*>((SameOriginCheckerImpl*)0x1000)) - reinterpret_cast<
char*>((SameOriginCheckerImpl*)0x1000))}, {&mozilla::detail
::kImplementedIID<SameOriginCheckerImpl, nsIInterfaceRequestor
>, int32_t( reinterpret_cast<char*>(static_cast<nsIInterfaceRequestor
*>((SameOriginCheckerImpl*)0x1000)) - reinterpret_cast<
char*>((SameOriginCheckerImpl*)0x1000))}, {&mozilla::detail
::kImplementedIID<SameOriginCheckerImpl, nsISupports>, int32_t
(reinterpret_cast<char*>(static_cast<nsISupports*>
( static_cast<nsIChannelEventSink*>((SameOriginCheckerImpl
*)0x1000))) - reinterpret_cast<char*>((SameOriginCheckerImpl
*)0x1000))}, { nullptr, 0 } } ; static_assert(std::size(table
) > 1, "need at least 1 interface"); rv = NS_TableDrivenQI
(static_cast<void*>(this), aIID, aInstancePtr, table); return
 rv; }
8270                  nsIInterfaceRequestor)MozExternalRefCountType SameOriginCheckerImpl::AddRef(void) {
 static_assert(!std::is_destructible_v<SameOriginCheckerImpl
>, "Reference-counted class " "SameOriginCheckerImpl" " should not have a public destructor. "
 "Make this class's destructor non-public"); do { static_assert
( mozilla::detail::AssertionConditionType<decltype(int32_t
(mRefCnt) >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) >= 0))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) >= 0"
 " (" "illegal refcnt" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8270); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0"
 ") (" "illegal refcnt" ")"); do { MOZ_CrashSequence(__null, 8270
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false); do { static_assert( mozilla::detail::AssertionConditionType
<decltype("SameOriginCheckerImpl" != nullptr)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!("SameOriginCheckerImpl" != nullptr))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("\"SameOriginCheckerImpl\" != nullptr"
 " (" "Must specify a name" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8270); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"SameOriginCheckerImpl\" != nullptr"
 ") (" "Must specify a name" ")"); do { MOZ_CrashSequence(__null
, 8270); __attribute__((nomerge)) ::abort(); } while (false);
 } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread
.AssertOwnership("SameOriginCheckerImpl" " not thread-safe");
 nsrefcnt count = ++mRefCnt; NS_LogAddRef((this), (count), ("SameOriginCheckerImpl"
), (uint32_t)(sizeof(*this))); return count; } MozExternalRefCountType
 SameOriginCheckerImpl::Release(void) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(int32_t(mRefCnt)
 > 0)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(int32_t(mRefCnt) > 0))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("int32_t(mRefCnt) > 0" " (" "dup release"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8270
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0"
 ") (" "dup release" ")"); do { MOZ_CrashSequence(__null, 8270
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false); do { static_assert( mozilla::detail::AssertionConditionType
<decltype("SameOriginCheckerImpl" != nullptr)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!("SameOriginCheckerImpl" != nullptr))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("\"SameOriginCheckerImpl\" != nullptr"
 " (" "Must specify a name" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8270); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"SameOriginCheckerImpl\" != nullptr"
 ") (" "Must specify a name" ")"); do { MOZ_CrashSequence(__null
, 8270); __attribute__((nomerge)) ::abort(); } while (false);
 } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread
.AssertOwnership("SameOriginCheckerImpl" " not thread-safe");
 const char* const nametmp = "SameOriginCheckerImpl"; nsrefcnt
 count = --mRefCnt; NS_LogRelease((this), (count), (nametmp))
; if (count == 0) { mRefCnt = 1; delete (this); return 0; } return
 count; } nsresult SameOriginCheckerImpl::QueryInterface(const
 nsIID& aIID, void** aInstancePtr) { do { if (!(aInstancePtr
)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "QueryInterface requires a non-NULL destination!"
, "aInstancePtr", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8270); MOZ_PretendNoReturn(); } } while (0); nsresult rv = NS_ERROR_FAILURE
; static_assert(2 > 0, "Need more arguments to NS_INTERFACE_TABLE"
); static const QITableEntry table[] = { {&mozilla::detail
::kImplementedIID<SameOriginCheckerImpl, nsIChannelEventSink
>, int32_t( reinterpret_cast<char*>(static_cast<nsIChannelEventSink
*>((SameOriginCheckerImpl*)0x1000)) - reinterpret_cast<
char*>((SameOriginCheckerImpl*)0x1000))}, {&mozilla::detail
::kImplementedIID<SameOriginCheckerImpl, nsIInterfaceRequestor
>, int32_t( reinterpret_cast<char*>(static_cast<nsIInterfaceRequestor
*>((SameOriginCheckerImpl*)0x1000)) - reinterpret_cast<
char*>((SameOriginCheckerImpl*)0x1000))}, {&mozilla::detail
::kImplementedIID<SameOriginCheckerImpl, nsISupports>, int32_t
(reinterpret_cast<char*>(static_cast<nsISupports*>
( static_cast<nsIChannelEventSink*>((SameOriginCheckerImpl
*)0x1000))) - reinterpret_cast<char*>((SameOriginCheckerImpl
*)0x1000))}, { nullptr, 0 } } ; static_assert(std::size(table
) > 1, "need at least 1 interface"); rv = NS_TableDrivenQI
(static_cast<void*>(this), aIID, aInstancePtr, table); return
 rv; }
8271 
8272NS_IMETHODIMPnsresult
8273SameOriginCheckerImpl::AsyncOnChannelRedirect(
8274    nsIChannel* aOldChannel, nsIChannel* aNewChannel, uint32_t aFlags,
8275    nsIAsyncVerifyRedirectCallback* cb) {
8276  MOZ_ASSERT(aNewChannel, "Redirecting to null channel?")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNewChannel)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aNewChannel))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("aNewChannel" " ("
 "Redirecting to null channel?" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8276); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNewChannel"
 ") (" "Redirecting to null channel?" ")"); do { MOZ_CrashSequence
(__null, 8276); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
8277 
8278  nsresult rv = nsContentUtils::CheckSameOrigin(aOldChannel, aNewChannel);
8279  if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))) {
8280    cb->OnRedirectVerifyCallback(NS_OK);
8281  }
8282 
8283  return rv;
8284}
8285 
8286NS_IMETHODIMPnsresult
8287SameOriginCheckerImpl::GetInterface(const nsIID& aIID, void** aResult) {
8288  return QueryInterface(aIID, aResult);
8289}
8290 
8291/* static */
8292nsresult nsContentUtils::GetWebExposedOriginSerialization(nsIURI* aURI,
8293                                                          nsACString& aOrigin) {
8294  nsresult rv;
8295  MOZ_ASSERT(aURI, "missing uri")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aURI)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(aURI))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("aURI" " (" "missing uri" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8295); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aURI" ") ("
 "missing uri" ")"); do { MOZ_CrashSequence(__null, 8295); __attribute__
((nomerge)) ::abort(); } while (false); } } while (false);
8296 
8297  // For Blob URI, the path is the URL of the owning page.
8298  if (aURI->SchemeIs(BLOBURI_SCHEME"blob")) {
8299    nsAutoCString path;
8300    rv = aURI->GetPathQueryRef(path);
8301    NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8301); return rv; } } while (false);
8302 
8303    nsCOMPtr<nsIURI> uri;
8304    rv = NS_NewURI(getter_AddRefs(uri), path);
8305    if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
8306      aOrigin.AssignLiteral("null");
8307      return NS_OK;
8308    }
8309 
8310    if (
8311        // Schemes in spec. https://url.spec.whatwg.org/#origin
8312        !net::SchemeIsHttpOrHttps(uri) && !uri->SchemeIs("file") &&
8313        !uri->SchemeIs("resource") &&
8314        // Our own schemes.
8315        !uri->SchemeIs("moz-extension")) {
8316      aOrigin.AssignLiteral("null");
8317      return NS_OK;
8318    }
8319 
8320    return GetWebExposedOriginSerialization(uri, aOrigin);
8321  }
8322 
8323  nsAutoCString scheme;
8324  aURI->GetScheme(scheme);
8325 
8326  // If the protocol doesn't have URI_HAS_WEB_EXPOSED_ORIGIN, then
8327  // return "null" as the origin serialization.
8328  // We make an exception for "ftp" since we don't have a protocol handler
8329  // for this scheme
8330  uint32_t flags = 0;
8331  nsCOMPtr<nsIIOService> io = mozilla::components::IO::Service(&rv);
8332  if (!scheme.Equals("ftp") && NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))) &&
8333      NS_SUCCEEDED(io->GetProtocolFlags(scheme.get(), &flags))((bool)(__builtin_expect(!!(!NS_FAILED_impl(io->GetProtocolFlags
(scheme.get(), &flags))), 1)))) {
8334    if (!(flags & nsIProtocolHandler::URI_HAS_WEB_EXPOSED_ORIGIN)) {
8335      aOrigin.AssignLiteral("null");
8336      return NS_OK;
8337    }
8338  }
8339 
8340  aOrigin.Truncate();
8341 
8342  nsCOMPtr<nsIURI> uri = NS_GetInnermostURI(aURI);
8343  NS_ENSURE_TRUE(uri, NS_ERROR_UNEXPECTED)do { if ((__builtin_expect(!!(!(uri)), 0))) { NS_DebugBreak(NS_DEBUG_WARNING
, "NS_ENSURE_TRUE(" "uri" ") failed", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8343); return NS_ERROR_UNEXPECTED; } } while (false);
8344 
8345  nsAutoCString host;
8346  rv = uri->GetAsciiHost(host);
8347 
8348  if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))) && !host.IsEmpty()) {
8349    nsAutoCString userPass;
8350    uri->GetUserPass(userPass);
8351 
8352    nsAutoCString prePath;
8353    if (!userPass.IsEmpty()) {
8354      rv = NS_MutateURI(uri).SetUserPass(""_ns).Finalize(uri);
8355      NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8355); return rv; } } while (false);
8356    }
8357 
8358    rv = uri->GetPrePath(prePath);
8359    NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8359); return rv; } } while (false);
8360 
8361    aOrigin = std::move(prePath);
8362  } else {
8363    aOrigin.AssignLiteral("null");
8364  }
8365 
8366  return NS_OK;
8367}
8368 
8369/* static */
8370nsresult nsContentUtils::GetWebExposedOriginSerialization(
8371    nsIPrincipal* aPrincipal, nsAString& aOrigin) {
8372  MOZ_ASSERT(aPrincipal, "missing principal")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPrincipal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPrincipal))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("aPrincipal" " (" "missing principal"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8372
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPrincipal" ") ("
 "missing principal" ")"); do { MOZ_CrashSequence(__null, 8372
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false);
8373 
8374  aOrigin.Truncate();
8375  nsAutoCString webExposedOriginSerialization;
8376 
8377  nsresult rv = aPrincipal->GetWebExposedOriginSerialization(
8378      webExposedOriginSerialization);
8379  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
8380    webExposedOriginSerialization.AssignLiteral("null");
8381  }
8382 
8383  CopyUTF8toUTF16(webExposedOriginSerialization, aOrigin);
8384  return NS_OK;
8385}
8386 
8387/* static */
8388nsresult nsContentUtils::GetWebExposedOriginSerialization(nsIURI* aURI,
8389                                                          nsAString& aOrigin) {
8390  MOZ_ASSERT(aURI, "missing uri")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aURI)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(aURI))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("aURI" " (" "missing uri" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8390); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aURI" ") ("
 "missing uri" ")"); do { MOZ_CrashSequence(__null, 8390); __attribute__
((nomerge)) ::abort(); } while (false); } } while (false);
8391  nsresult rv;
8392 
8393#if defined(MOZ_THUNDERBIRD) || defined(MOZ_SUITE)
8394  // Check if either URI has a special origin.
8395  nsCOMPtr<nsIURIWithSpecialOrigin> uriWithSpecialOrigin =
8396      do_QueryInterface(aURI);
8397  if (uriWithSpecialOrigin) {
8398    nsCOMPtr<nsIURI> origin;
8399    rv = uriWithSpecialOrigin->GetOrigin(getter_AddRefs(origin));
8400    NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8400); return rv; } } while (false);
8401 
8402    return GetWebExposedOriginSerialization(origin, aOrigin);
8403  }
8404#endif
8405 
8406  nsAutoCString webExposedOriginSerialization;
8407  rv = GetWebExposedOriginSerialization(aURI, webExposedOriginSerialization);
8408  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8408); return rv; } } while (false);
8409 
8410  CopyUTF8toUTF16(webExposedOriginSerialization, aOrigin);
8411  return NS_OK;
8412}
8413 
8414/* static */
8415bool nsContentUtils::CheckMayLoad(nsIPrincipal* aPrincipal,
8416                                  nsIChannel* aChannel,
8417                                  bool aAllowIfInheritsPrincipal) {
8418  nsCOMPtr<nsIURI> channelURI;
8419  nsresult rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(channelURI));
8420  NS_ENSURE_SUCCESS(rv, false)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "false", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8420); return false; } } while (false);
8421 
8422  return NS_SUCCEEDED(((bool)(__builtin_expect(!!(!NS_FAILED_impl(aPrincipal->CheckMayLoad
(channelURI, aAllowIfInheritsPrincipal))), 1)))
8423      aPrincipal->CheckMayLoad(channelURI, aAllowIfInheritsPrincipal))((bool)(__builtin_expect(!!(!NS_FAILED_impl(aPrincipal->CheckMayLoad
(channelURI, aAllowIfInheritsPrincipal))), 1)));
8424}
8425 
8426/* static */
8427bool nsContentUtils::CanAccessNativeAnon() {
8428  return LegacyIsCallerChromeOrNativeCode();
8429}
8430 
8431/* static */
8432nsresult nsContentUtils::DispatchXULCommand(nsIContent* aTarget, bool aTrusted,
8433                                            Event* aSourceEvent,
8434                                            PresShell* aPresShell, bool aCtrl,
8435                                            bool aAlt, bool aShift, bool aMeta,
8436                                            uint16_t aInputSource,
8437                                            int16_t aButton) {
8438  NS_ENSURE_STATE(aTarget)do { if ((__builtin_expect(!!(!(aTarget)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aTarget" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8438); return
 NS_ERROR_UNEXPECTED; } } while (false);
8439  Document* doc = aTarget->OwnerDoc();
8440  nsPresContext* presContext = doc->GetPresContext();
8441 
8442  RefPtr<XULCommandEvent> xulCommand =
8443      new XULCommandEvent(doc, presContext, nullptr);
8444  xulCommand->InitCommandEvent(u"command"_ns, true, true,
8445                               nsGlobalWindowInner::Cast(doc->GetInnerWindow()),
8446                               0, aCtrl, aAlt, aShift, aMeta, aButton,
8447                               aSourceEvent, aInputSource, IgnoreErrors());
8448 
8449  if (aPresShell) {
8450    nsEventStatus status = nsEventStatus_eIgnore;
8451    return aPresShell->HandleDOMEventWithTarget(aTarget, xulCommand, &status);
8452  }
8453 
8454  ErrorResult rv;
8455  aTarget->DispatchEvent(*xulCommand, rv);
8456  return rv.StealNSResult();
8457}
8458 
8459// static
8460nsresult nsContentUtils::WrapNative(JSContext* cx, nsISupports* native,
8461                                    nsWrapperCache* cache, const nsIID* aIID,
8462                                    JS::MutableHandle<JS::Value> vp,
8463                                    bool aAllowWrapping) {
8464  MOZ_ASSERT(cx == GetCurrentJSContext())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(cx == GetCurrentJSContext())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(cx == GetCurrentJSContext())
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("cx == GetCurrentJSContext()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8464); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "cx == GetCurrentJSContext()" ")"); do { MOZ_CrashSequence
(__null, 8464); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
8465 
8466  if (!native) {
8467    vp.setNull();
8468 
8469    return NS_OK;
8470  }
8471 
8472  JSObject* wrapper = xpc_FastGetCachedWrapper(cx, cache, vp);
8473  if (wrapper) {
8474    return NS_OK;
8475  }
8476 
8477  NS_ENSURE_TRUE(sXPConnect, NS_ERROR_UNEXPECTED)do { if ((__builtin_expect(!!(!(sXPConnect)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "sXPConnect" ") failed",
 nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8477
); return NS_ERROR_UNEXPECTED; } } while (false);
8478 
8479  if (!NS_IsMainThread()) {
8480    MOZ_CRASH()do { do { } while (false); MOZ_ReportCrash("" , "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8480); AnnotateMozCrashReason("MOZ_CRASH(" ")"); do { MOZ_CrashSequence
(__null, 8480); __attribute__((nomerge)) ::abort(); } while (
false); } while (false);
8481  }
8482 
8483  JS::Rooted<JSObject*> scope(cx, JS::CurrentGlobalOrNull(cx));
8484  nsresult rv = sXPConnect->WrapNativeToJSVal(cx, scope, native, cache, aIID,
8485                                              aAllowWrapping, vp);
8486  return rv;
8487}
8488 
8489void nsContentUtils::StripNullChars(const nsAString& aInStr,
8490                                    nsAString& aOutStr) {
8491  // In common cases where we don't have nulls in the
8492  // string we can simple simply bypass the checking code.
8493  int32_t firstNullPos = aInStr.FindChar('\0');
8494  if (firstNullPos == kNotFound) {
8495    aOutStr.Assign(aInStr);
8496    return;
8497  }
8498 
8499  aOutStr.SetCapacity(aInStr.Length() - 1);
8500  nsAString::const_iterator start, end;
8501  aInStr.BeginReading(start);
8502  aInStr.EndReading(end);
8503  while (start != end) {
8504    if (*start != '\0') aOutStr.Append(*start);
8505    ++start;
8506  }
8507}
8508 
8509struct ClassMatchingInfo {
8510  AtomArray mClasses;
8511  nsCaseTreatment mCaseTreatment;
8512};
8513 
8514// static
8515bool nsContentUtils::MatchClassNames(Element* aElement, int32_t aNamespaceID,
8516                                     nsAtom* aAtom, void* aData) {
8517  // We can't match if there are no class names
8518  const nsAttrValue* classAttr = aElement->GetClasses();
8519  if (!classAttr) {
8520    return false;
8521  }
8522 
8523  // need to match *all* of the classes
8524  ClassMatchingInfo* info = static_cast<ClassMatchingInfo*>(aData);
8525  if (info->mClasses.IsEmpty()) {
8526    // If we actually had no classes, don't match.
8527    return false;
8528  }
8529 
8530  for (nsAtom* cls : info->mClasses) {
8531    if (!classAttr->Contains(cls, info->mCaseTreatment)) {
8532      return false;
8533    }
8534  }
8535  return true;
8536}
8537 
8538// static
8539void nsContentUtils::DestroyClassNameArray(void* aData) {
8540  ClassMatchingInfo* info = static_cast<ClassMatchingInfo*>(aData);
8541  delete info;
8542}
8543 
8544// static
8545void* nsContentUtils::AllocClassMatchingInfo(nsINode* aRootNode,
8546                                             const nsString* aClasses) {
8547  nsAttrValue attrValue;
8548  attrValue.ParseAtomArray(*aClasses);
8549  // nsAttrValue::Equals is sensitive to order, so we'll send an array
8550  auto* info = new ClassMatchingInfo;
8551  if (attrValue.Type() == nsAttrValue::eAtomArray) {
8552    info->mClasses.AppendElements(attrValue.GetAtomArrayValue()->Array());
8553  } else if (attrValue.Type() == nsAttrValue::eAtom) {
8554    info->mClasses.AppendElement(attrValue.GetAtomValue());
8555  }
8556 
8557  info->mCaseTreatment =
8558      aRootNode->OwnerDoc()->GetCompatibilityMode() == eCompatibility_NavQuirks
8559          ? eIgnoreCase
8560          : eCaseMatters;
8561  return info;
8562}
8563 
8564void nsContentUtils::FlushLayoutForTree(nsPIDOMWindowOuter* aWindow) {
8565  if (!aWindow) {
8566    return;
8567  }
8568 
8569  // Note that because FlushPendingNotifications flushes parents, this
8570  // is O(N^2) in docshell tree depth.  However, the docshell tree is
8571  // usually pretty shallow.
8572 
8573  if (RefPtr<Document> doc = aWindow->GetDoc()) {
8574    doc->FlushPendingNotifications(FlushType::Layout);
8575  }
8576 
8577  if (nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell()) {
8578    int32_t i = 0, i_end;
8579    docShell->GetInProcessChildCount(&i_end);
8580    for (; i < i_end; ++i) {
8581      nsCOMPtr<nsIDocShellTreeItem> item;
8582      if (docShell->GetInProcessChildAt(i, getter_AddRefs(item)) == NS_OK &&
8583          item) {
8584        if (nsCOMPtr<nsPIDOMWindowOuter> win = item->GetWindow()) {
8585          FlushLayoutForTree(win);
8586        }
8587      }
8588    }
8589  }
8590}
8591 
8592void nsContentUtils::RemoveNewlines(nsAString& aString) { aString.StripCRLF(); }
8593 
8594void nsContentUtils::PlatformToDOMLineBreaks(nsAString& aString) {
8595  if (!PlatformToDOMLineBreaks(aString, fallible)) {
8596    aString.AllocFailed(aString.Length());
8597  }
8598}
8599 
8600bool nsContentUtils::PlatformToDOMLineBreaks(nsAString& aString,
8601                                             const fallible_t& aFallible) {
8602  if (aString.FindChar(char16_t('\r')) != -1) {
8603    // Windows linebreaks: Map CRLF to LF:
8604    if (!aString.ReplaceSubstring(u"\r\n", u"\n", aFallible)) {
8605      return false;
8606    }
8607 
8608    // Mac linebreaks: Map any remaining CR to LF:
8609    if (!aString.ReplaceSubstring(u"\r", u"\n", aFallible)) {
8610      return false;
8611    }
8612  }
8613 
8614  return true;
8615}
8616 
8617already_AddRefed<ContentList> nsContentUtils::GetElementsByClassName(
8618    nsINode* aRootNode, const nsAString& aClasses) {
8619  MOZ_ASSERT(aRootNode, "Must have root node")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aRootNode)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aRootNode))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aRootNode" " (" "Must have root node"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8619
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aRootNode" ") (" "Must have root node"
 ")"); do { MOZ_CrashSequence(__null, 8619); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
8620 
8621  return GetFuncStringContentList<CacheableFuncStringHTMLCollection>(
8622      aRootNode, MatchClassNames, DestroyClassNameArray, AllocClassMatchingInfo,
8623      aClasses);
8624}
8625 
8626PresShell* nsContentUtils::FindPresShellForDocument(const Document* aDocument) {
8627  const Document* doc = aDocument;
8628  Document* displayDoc = doc->GetDisplayDocument();
8629  if (displayDoc) {
8630    doc = displayDoc;
8631  }
8632 
8633  PresShell* presShell = doc->GetPresShell();
8634  if (presShell) {
8635    return presShell;
8636  }
8637 
8638  nsCOMPtr<nsIDocShellTreeItem> docShellTreeItem = doc->GetDocShell();
8639  while (docShellTreeItem) {
8640    // We may be in a display:none subdocument, or we may not have a presshell
8641    // created yet.
8642    // Walk the docshell tree to find the nearest container that has a
8643    // presshell, and return that.
8644    nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(docShellTreeItem);
8645    if (PresShell* presShell = docShell->GetPresShell()) {
8646      return presShell;
8647    }
8648    nsCOMPtr<nsIDocShellTreeItem> parent;
8649    docShellTreeItem->GetInProcessParent(getter_AddRefs(parent));
8650    docShellTreeItem = parent;
8651  }
8652 
8653  return nullptr;
8654}
8655 
8656/* static */
8657nsPresContext* nsContentUtils::FindPresContextForDocument(
8658    const Document* aDocument) {
8659  if (PresShell* presShell = FindPresShellForDocument(aDocument)) {
8660    return presShell->GetPresContext();
8661  }
8662  return nullptr;
8663}
8664 
8665nsIWidget* nsContentUtils::WidgetForDocument(const Document* aDocument) {
8666  PresShell* presShell = FindPresShellForDocument(aDocument);
8667  return presShell ? presShell->GetNearestWidget() : nullptr;
8668}
8669 
8670nsIWidget* nsContentUtils::WidgetForContent(const nsIContent* aContent) {
8671  nsIFrame* frame = aContent->GetPrimaryFrame();
8672  if (!frame) {
8673    return nullptr;
8674  }
8675  return frame->GetNearestWidget();
8676}
8677 
8678WindowRenderer* nsContentUtils::WindowRendererForContent(
8679    const nsIContent* aContent) {
8680  nsIWidget* widget = nsContentUtils::WidgetForContent(aContent);
8681  if (widget) {
8682    return widget->GetWindowRenderer();
8683  }
8684 
8685  return nullptr;
8686}
8687 
8688WindowRenderer* nsContentUtils::WindowRendererForDocument(
8689    const Document* aDoc) {
8690  if (nsIWidget* widget = nsContentUtils::WidgetForDocument(aDoc)) {
8691    return widget->GetWindowRenderer();
8692  }
8693  return nullptr;
8694}
8695 
8696bool nsContentUtils::AllowXULXBLForPrincipal(nsIPrincipal* aPrincipal) {
8697  if (!aPrincipal) {
8698    return false;
8699  }
8700 
8701  if (aPrincipal->IsSystemPrincipal()) {
8702    return true;
8703  }
8704 
8705  return xpc::IsInAutomation() && IsSitePermAllow(aPrincipal, "allowXULXBL"_ns);
8706}
8707 
8708bool nsContentUtils::IsPDFJSEnabled() { return !StaticPrefs::pdfjs_disabled(); }
8709 
8710bool nsContentUtils::IsPDFJS(nsIPrincipal* aPrincipal) {
8711  if (!aPrincipal || !aPrincipal->SchemeIs("resource")) {
8712    return false;
8713  }
8714  nsAutoCString spec;
8715  nsresult rv = aPrincipal->GetAsciiSpec(spec);
8716  NS_ENSURE_SUCCESS(rv, false)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "false", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8716); return false; } } while (false);
8717  return spec.EqualsLiteral("resource://pdf.js/web/viewer.html");
8718}
8719 
8720bool nsContentUtils::IsSystemOrPDFJS(JSContext* aCx, JSObject*) {
8721  nsIPrincipal* principal = SubjectPrincipal(aCx);
8722  return principal && (principal->IsSystemPrincipal() || IsPDFJS(principal));
8723}
8724 
8725bool nsContentUtils::IsSecureContextOrWebExtension(JSContext* aCx,
8726                                                   JSObject* aGlobal) {
8727  nsIPrincipal* principal = SubjectPrincipal(aCx);
8728  return mozilla::dom::IsSecureContextOrObjectIsFromSecureContext(aCx,
8729                                                                  aGlobal) ||
8730         (principal && principal->GetIsAddonOrExpandedAddonPrincipal());
8731}
8732 
8733already_AddRefed<nsIDocumentLoaderFactory>
8734nsContentUtils::FindInternalDocumentViewer(const nsACString& aType,
8735                                           DocumentViewerType* aLoaderType) {
8736  if (aLoaderType) {
8737    *aLoaderType = TYPE_UNSUPPORTED;
8738  }
8739 
8740  // one helper factory, please
8741  nsCOMPtr<nsICategoryManager> catMan(
8742      do_GetService(NS_CATEGORYMANAGER_CONTRACTID"@mozilla.org/categorymanager;1"));
8743  if (!catMan) return nullptr;
8744 
8745  nsCOMPtr<nsIDocumentLoaderFactory> docFactory;
8746 
8747  nsCString contractID;
8748  nsresult rv =
8749      catMan->GetCategoryEntry("Gecko-Content-Viewers", aType, contractID);
8750  if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))) {
8751    docFactory = do_GetService(contractID.get());
8752    if (docFactory && aLoaderType) {
8753      if (contractID.EqualsLiteral(CONTENT_DLF_CONTRACTID"@mozilla.org/content/document-loader-factory;1"))
8754        *aLoaderType = TYPE_CONTENT;
8755      else
8756        *aLoaderType = TYPE_UNKNOWN;
8757    }
8758    return docFactory.forget();
8759  }
8760 
8761  // If the type wasn't registered in `Gecko-Content-Viewers`, check if it's
8762  // another type which we may dynamically support, such as `text/*` types or
8763  // video document types. These types are all backed by the nsContentDLF.
8764  if (IsPlainTextType(aType) ||
8765      DecoderTraits::IsSupportedInVideoDocument(aType)) {
8766    docFactory = do_GetService(CONTENT_DLF_CONTRACTID"@mozilla.org/content/document-loader-factory;1");
8767    if (docFactory && aLoaderType) {
8768      *aLoaderType = TYPE_CONTENT;
8769    }
8770    return docFactory.forget();
8771  }
8772 
8773  return nullptr;
8774}
8775 
8776static void ReportPatternCompileFailure(nsAString& aPattern,
8777                                        const JS::RegExpFlags& aFlags,
8778                                        const Document* aDocument,
8779                                        JS::MutableHandle<JS::Value> error,
8780                                        JSContext* cx) {
8781  AutoTArray<nsString, 3> strings;
8782 
8783  strings.AppendElement(aPattern);
8784 
8785  std::stringstream flag_ss;
8786  flag_ss << aFlags;
8787  nsString* flagstr = strings.AppendElement();
8788  AppendUTF8toUTF16(flag_ss.str(), *flagstr);
8789 
8790  JS::AutoSaveExceptionState savedExc(cx);
8791  JS::Rooted<JSObject*> exnObj(cx, &error.toObject());
8792  JS::Rooted<JS::Value> messageVal(cx);
8793  if (!JS_GetProperty(cx, exnObj, "message", &messageVal)) {
8794    return;
8795  }
8796  JS::Rooted<JSString*> messageStr(cx, messageVal.toString());
8797  MOZ_ASSERT(messageStr)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(messageStr)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(messageStr))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("messageStr", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8797); AnnotateMozCrashReason("MOZ_ASSERT" "(" "messageStr"
 ")"); do { MOZ_CrashSequence(__null, 8797); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
8798  if (!AssignJSString(cx, *strings.AppendElement(), messageStr)) {
8799    return;
8800  }
8801 
8802  nsContentUtils::ReportToConsole(nsIScriptError::errorFlag, "DOM"_ns,
8803                                  aDocument, PropertiesFile::DOM_PROPERTIES,
8804                                  "PatternAttributeCompileFailurev2", strings);
8805  savedExc.drop();
8806}
8807 
8808// static
8809Maybe<bool> nsContentUtils::IsPatternMatching(const nsAString& aValue,
8810                                              nsString&& aPattern,
8811                                              const Document* aDocument,
8812                                              bool aHasMultiple,
8813                                              JS::RegExpFlags aFlags) {
8814  NS_ASSERTION(aDocument, "aDocument should be a valid pointer (not null)")do { if (!(aDocument)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "aDocument should be a valid pointer (not null)"
, "aDocument", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8814); MOZ_PretendNoReturn(); } } while (0);
8815 
8816  // The fact that we're using a JS regexp under the hood should not be visible
8817  // to things like window onerror handlers, so we don't initialize our JSAPI
8818  // with the document's window (which may not exist anyway).
8819  AutoJSAPI jsapi;
8820  jsapi.Init();
8821  JSContext* cx = jsapi.cx();
8822  AutoDisableJSInterruptCallback disabler(cx);
8823 
8824  // We can use the junk scope here, because we're just using it for regexp
8825  // evaluation, not actual script execution, and we disable statics so that the
8826  // evaluation does not interact with the execution global.
8827  JSAutoRealm ar(cx, xpc::PrivilegedJunkScope());
8828 
8829  // Check if the pattern by itself is valid first, and not that it only becomes
8830  // valid once we add ^(?: and )$.
8831  JS::Rooted<JS::Value> error(cx);
8832  if (!JS::CheckRegExpSyntax(cx, aPattern.BeginReading(), aPattern.Length(),
8833                             aFlags, &error)) {
8834    return Nothing();
8835  }
8836 
8837  if (!error.isUndefined()) {
8838    ReportPatternCompileFailure(aPattern, aFlags, aDocument, &error, cx);
8839    return Some(true);
8840  }
8841 
8842  // The pattern has to match the entire value.
8843  aPattern.InsertLiteral(u"^(?:", 0);
8844  aPattern.AppendLiteral(")$");
8845 
8846  JS::Rooted<JSObject*> re(
8847      cx, JS::NewUCRegExpObject(cx, aPattern.BeginReading(), aPattern.Length(),
8848                                aFlags));
8849  if (!re) {
8850    return Nothing();
8851  }
8852 
8853  JS::Rooted<JS::Value> rval(cx, JS::NullValue());
8854  if (!aHasMultiple) {
8855    size_t idx = 0;
8856    if (!JS::ExecuteRegExpNoStatics(cx, re, aValue.BeginReading(),
8857                                    aValue.Length(), &idx, true, &rval)) {
8858      return Nothing();
8859    }
8860    return Some(!rval.isNull());
8861  }
8862 
8863  HTMLSplitOnSpacesTokenizer tokenizer(aValue, ',');
8864  while (tokenizer.hasMoreTokens()) {
8865    const nsAString& value = tokenizer.nextToken();
8866    size_t idx = 0;
8867    if (!JS::ExecuteRegExpNoStatics(cx, re, value.BeginReading(),
8868                                    value.Length(), &idx, true, &rval)) {
8869      return Nothing();
8870    }
8871    if (rval.isNull()) {
8872      return Some(false);
8873    }
8874  }
8875  return Some(true);
8876}
8877 
8878// static
8879nsresult nsContentUtils::URIInheritsSecurityContext(nsIURI* aURI,
8880                                                    bool* aResult) {
8881  // Note: about:blank URIs do NOT inherit the security context from the
8882  // current document, which is what this function tests for...
8883  return NS_URIChainHasFlags(
8884      aURI, nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT, aResult);
8885}
8886 
8887// static
8888bool nsContentUtils::ChannelShouldInheritPrincipal(
8889    nsIPrincipal* aLoadingPrincipal, nsIURI* aURI, bool aInheritForAboutBlank,
8890    bool aForceInherit) {
8891  MOZ_ASSERT(aLoadingPrincipal,do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aLoadingPrincipal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aLoadingPrincipal))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aLoadingPrincipal"
 " (" "Can not check inheritance without a principal" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8892); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aLoadingPrincipal"
 ") (" "Can not check inheritance without a principal" ")"); do
 { MOZ_CrashSequence(__null, 8892); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false)
8892             "Can not check inheritance without a principal")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aLoadingPrincipal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aLoadingPrincipal))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aLoadingPrincipal"
 " (" "Can not check inheritance without a principal" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8892); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aLoadingPrincipal"
 ") (" "Can not check inheritance without a principal" ")"); do
 { MOZ_CrashSequence(__null, 8892); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false);
8893 
8894  // Only tell the channel to inherit if it can't provide its own security
8895  // context.
8896  //
8897  // XXX: If this is ever changed, check all callers for what owners
8898  //      they're passing in.  In particular, see the code and
8899  //      comments in nsDocShell::LoadURI where we fall back on
8900  //      inheriting the owner if called from chrome.  That would be
8901  //      very wrong if this code changed anything but channels that
8902  //      can't provide their own security context!
8903  //
8904  // If aForceInherit is true, we will inherit, even for a channel that
8905  // can provide its own security context. This is used for srcdoc loads.
8906  bool inherit = aForceInherit;
8907  if (!inherit) {
8908    bool uriInherits;
8909    // We expect URIInheritsSecurityContext to return success for an
8910    // about:blank URI, so don't call NS_IsAboutBlank() if this call fails.
8911    // This condition needs to match the one in nsDocShell::InternalLoad where
8912    // we're checking for things that will use the owner.
8913    inherit =
8914        (NS_SUCCEEDED(URIInheritsSecurityContext(aURI, &uriInherits))((bool)(__builtin_expect(!!(!NS_FAILED_impl(URIInheritsSecurityContext
(aURI, &uriInherits))), 1))) &&
8915         (uriInherits || (aInheritForAboutBlank &&
8916                          NS_IsAboutBlankAllowQueryAndFragment(aURI)))) ||
8917        //
8918        // file: uri special-casing
8919        //
8920        // If this is a file: load opened from another file: then it may need
8921        // to inherit the owner from the referrer so they can script each other.
8922        // If we don't set the owner explicitly then each file: gets an owner
8923        // based on its own codebase later.
8924        //
8925        (URIIsLocalFile(aURI) &&
8926         NS_SUCCEEDED(aLoadingPrincipal->CheckMayLoad(aURI, false))((bool)(__builtin_expect(!!(!NS_FAILED_impl(aLoadingPrincipal
->CheckMayLoad(aURI, false))), 1))) &&
8927         // One more check here.  CheckMayLoad will always return true for the
8928         // system principal, but we do NOT want to inherit in that case.
8929         !aLoadingPrincipal->IsSystemPrincipal());
8930  }
8931  return inherit;
8932}
8933 
8934/* static */
8935bool nsContentUtils::IsCutCopyAllowed(Document* aDocument,
8936                                      nsIPrincipal& aSubjectPrincipal) {
8937  if (StaticPrefs::dom_allow_cut_copy() && aDocument &&
8938      aDocument->HasValidTransientUserGestureActivation()) {
8939    return true;
8940  }
8941 
8942  return PrincipalHasPermission(aSubjectPrincipal, nsGkAtoms::clipboardWrite);
8943}
8944 
8945/* static */
8946bool nsContentUtils::HaveEqualPrincipals(Document* aDoc1, Document* aDoc2) {
8947  if (!aDoc1 || !aDoc2) {
8948    return false;
8949  }
8950  bool principalsEqual = false;
8951  aDoc1->NodePrincipal()->Equals(aDoc2->NodePrincipal(), &principalsEqual);
8952  return principalsEqual;
8953}
8954 
8955/* static */
8956const Document* nsContentUtils::GetInProcessSubtreeRootDocument(
8957    const Document* aDoc) {
8958  if (!aDoc) {
8959    return nullptr;
8960  }
8961  const Document* doc = aDoc;
8962  while (doc->GetInProcessParentDocument()) {
8963    doc = doc->GetInProcessParentDocument();
8964  }
8965  return doc;
8966}
8967 
8968// static
8969bool nsContentUtils::IsPointInSelection(
8970    const mozilla::dom::Selection& aSelection, const nsINode& aNode,
8971    const uint32_t aOffset, const bool aAllowCrossShadowBoundary) {
8972  const bool selectionIsCollapsed =
8973      !aAllowCrossShadowBoundary
8974          ? aSelection.IsCollapsed()
8975          : aSelection.AreNormalAndCrossShadowBoundaryRangesCollapsed();
8976  if (selectionIsCollapsed) {
8977    return false;
8978  }
8979 
8980  const uint32_t rangeCount = aSelection.RangeCount();
8981  for (const uint32_t i : IntegerRange(rangeCount)) {
8982    MOZ_ASSERT(aSelection.RangeCount() == rangeCount)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aSelection.RangeCount() == rangeCount)>::isValid,
 "invalid assertion condition"); if ((__builtin_expect(!!(!(!
!(aSelection.RangeCount() == rangeCount))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aSelection.RangeCount() == rangeCount"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 8982); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aSelection.RangeCount() == rangeCount" ")"
); do { MOZ_CrashSequence(__null, 8982); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
8983    RefPtr<const nsRange> range = aSelection.GetRangeAt(i);
8984    if (NS_WARN_IF(!range)NS_warn_if_impl(!range, "!range", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 8984)) {
8985      // Don't bail yet, iterate through them all
8986      continue;
8987    }
8988 
8989    // Done when we find a range that we are in
8990    if (range->IsPointInRange(aNode, aOffset, IgnoreErrors(),
8991                              aAllowCrossShadowBoundary)) {
8992      return true;
8993    }
8994  }
8995 
8996  return false;
8997}
8998 
8999// static
9000void nsContentUtils::GetSelectionInTextControl(Selection* aSelection,
9001                                               Element* aRoot,
9002                                               uint32_t& aOutStartOffset,
9003                                               uint32_t& aOutEndOffset) {
9004  MOZ_ASSERT(aSelection && aRoot)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aSelection && aRoot)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aSelection && aRoot)
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("aSelection && aRoot"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9004); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aSelection && aRoot" ")"); do { MOZ_CrashSequence
(__null, 9004); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
9005 
9006  // We don't care which end of this selection is anchor and which is focus.  In
9007  // fact, we explicitly want to know which is the _start_ and which is the
9008  // _end_, not anchor vs focus.
9009  const nsRange* range = aSelection->GetAnchorFocusRange();
9010  if (!range) {
9011    // Nothing selected
9012    aOutStartOffset = aOutEndOffset = 0;
9013    return;
9014  }
9015 
9016  // All the node pointers here are raw pointers for performance.  We shouldn't
9017  // be doing anything in this function that invalidates the node tree.
9018  nsINode* startContainer = range->GetStartContainer();
9019  uint32_t startOffset = range->StartOffset();
9020  nsINode* endContainer = range->GetEndContainer();
9021  uint32_t endOffset = range->EndOffset();
9022 
9023  // We have at most two children, consisting of an optional text node followed
9024  // by an optional <br>.
9025  NS_ASSERTION(aRoot->GetChildCount() <= 2, "Unexpected children")do { if (!(aRoot->GetChildCount() <= 2)) { NS_DebugBreak
(NS_DEBUG_ASSERTION, "Unexpected children", "aRoot->GetChildCount() <= 2"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9025); MOZ_PretendNoReturn
(); } } while (0);
9026  nsIContent* firstChild = aRoot->GetFirstChild();
9027#ifdef DEBUG1
9028  nsCOMPtr<nsIContent> lastChild = aRoot->GetLastChild();
9029  NS_ASSERTION(startContainer == aRoot || startContainer == firstChild ||do { if (!(startContainer == aRoot || startContainer == firstChild
 || startContainer == lastChild)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Unexpected startContainer", "startContainer == aRoot || startContainer == firstChild || startContainer == lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9031); MOZ_PretendNoReturn
(); } } while (0)
9030                   startContainer == lastChild,do { if (!(startContainer == aRoot || startContainer == firstChild
 || startContainer == lastChild)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Unexpected startContainer", "startContainer == aRoot || startContainer == firstChild || startContainer == lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9031); MOZ_PretendNoReturn
(); } } while (0)
9031               "Unexpected startContainer")do { if (!(startContainer == aRoot || startContainer == firstChild
 || startContainer == lastChild)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Unexpected startContainer", "startContainer == aRoot || startContainer == firstChild || startContainer == lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9031); MOZ_PretendNoReturn
(); } } while (0);
9032  NS_ASSERTION(endContainer == aRoot || endContainer == firstChild ||do { if (!(endContainer == aRoot || endContainer == firstChild
 || endContainer == lastChild)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Unexpected endContainer", "endContainer == aRoot || endContainer == firstChild || endContainer == lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9034); MOZ_PretendNoReturn
(); } } while (0)
9033                   endContainer == lastChild,do { if (!(endContainer == aRoot || endContainer == firstChild
 || endContainer == lastChild)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Unexpected endContainer", "endContainer == aRoot || endContainer == firstChild || endContainer == lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9034); MOZ_PretendNoReturn
(); } } while (0)
9034               "Unexpected endContainer")do { if (!(endContainer == aRoot || endContainer == firstChild
 || endContainer == lastChild)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "Unexpected endContainer", "endContainer == aRoot || endContainer == firstChild || endContainer == lastChild"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9034); MOZ_PretendNoReturn
(); } } while (0);
9035  // firstChild is either text or a <br> (hence an element).
9036  MOZ_ASSERT_IF(firstChild, firstChild->IsText() || firstChild->IsElement())do { if (firstChild) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(firstChild->IsText() || firstChild->IsElement
())>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(firstChild->IsText() || firstChild->IsElement(
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("firstChild->IsText() || firstChild->IsElement()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9036); AnnotateMozCrashReason("MOZ_ASSERT" "(" "firstChild->IsText() || firstChild->IsElement()"
 ")"); do { MOZ_CrashSequence(__null, 9036); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
9037#endif
9038  if (!firstChild || firstChild->IsElement()) {
9039    // No text node, so everything is 0
9040    startOffset = endOffset = 0;
9041  } else {
9042    // First child is text.  If the start/end is already in the text node,
9043    // or the start of the root node, no change needed.  If it's in the root
9044    // node but not the start, or in the trailing <br>, we need to set the
9045    // offset to the end.
9046    if ((startContainer == aRoot && startOffset != 0) ||
9047        (startContainer != aRoot && startContainer != firstChild)) {
9048      startOffset = firstChild->Length();
9049    }
9050    if ((endContainer == aRoot && endOffset != 0) ||
9051        (endContainer != aRoot && endContainer != firstChild)) {
9052      endOffset = firstChild->Length();
9053    }
9054  }
9055 
9056  MOZ_ASSERT(startOffset <= endOffset)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(startOffset <= endOffset)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(startOffset <= endOffset)
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("startOffset <= endOffset"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9056); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "startOffset <= endOffset" ")"); do { MOZ_CrashSequence
(__null, 9056); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
9057  aOutStartOffset = startOffset;
9058  aOutEndOffset = endOffset;
9059}
9060 
9061// static
9062HTMLEditor* nsContentUtils::GetHTMLEditor(nsPresContext* aPresContext) {
9063  if (!aPresContext) {
9064    return nullptr;
9065  }
9066  return GetHTMLEditor(aPresContext->GetDocShell());
9067}
9068 
9069// static
9070HTMLEditor* nsContentUtils::GetHTMLEditor(nsDocShell* aDocShell) {
9071  bool isEditable;
9072  if (!aDocShell || NS_FAILED(aDocShell->GetEditable(&isEditable))((bool)(__builtin_expect(!!(NS_FAILED_impl(aDocShell->GetEditable
(&isEditable))), 0))) ||
9073      !isEditable) {
9074    return nullptr;
9075  }
9076  return aDocShell->GetHTMLEditor();
9077}
9078 
9079// static
9080EditorBase* nsContentUtils::GetActiveEditor(nsPresContext* aPresContext) {
9081  if (!aPresContext) {
9082    return nullptr;
9083  }
9084 
9085  return GetActiveEditor(aPresContext->Document()->GetWindow());
9086}
9087 
9088// static
9089EditorBase* nsContentUtils::GetActiveEditor(nsPIDOMWindowOuter* aWindow) {
9090  if (!aWindow || !aWindow->GetExtantDoc()) {
9091    return nullptr;
9092  }
9093 
9094  // If it's in designMode, nobody can have focus.  Therefore, the HTMLEditor
9095  // handles all events.  I.e., it's focused editor in this case.
9096  if (aWindow->GetExtantDoc()->IsInDesignMode()) {
9097    return GetHTMLEditor(nsDocShell::Cast(aWindow->GetDocShell()));
9098  }
9099 
9100  // If focused element is associated with TextEditor, it must be <input>
9101  // element or <textarea> element.  Let's return it even if it's in a
9102  // contenteditable element.
9103  nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
9104  if (Element* focusedElement = nsFocusManager::GetFocusedDescendant(
9105          aWindow, nsFocusManager::SearchRange::eOnlyCurrentWindow,
9106          getter_AddRefs(focusedWindow))) {
9107    if (TextEditor* textEditor = focusedElement->GetTextEditorInternal()) {
9108      return textEditor;
9109    }
9110  }
9111 
9112  // Otherwise, HTMLEditor may handle inputs even non-editable element has
9113  // focus or nobody has focus.
9114  return GetHTMLEditor(nsDocShell::Cast(aWindow->GetDocShell()));
9115}
9116 
9117// static
9118TextEditor* nsContentUtils::GetExtantTextEditorFromAnonymousNode(
9119    const nsIContent* aAnonymousContent) {
9120  if (!aAnonymousContent) {
9121    return nullptr;
9122  }
9123  nsIContent* parent = aAnonymousContent->FindFirstNonChromeOnlyAccessContent();
9124  if (!parent || parent == aAnonymousContent) {
9125    return nullptr;
9126  }
9127  if (const HTMLInputElement* const inputElement =
9128          HTMLInputElement::FromNodeOrNull(parent)) {
9129    return inputElement->GetExtantTextEditor();
9130  }
9131  if (const HTMLTextAreaElement* const textareaElement =
9132          HTMLTextAreaElement::FromNodeOrNull(parent)) {
9133    return textareaElement->GetExtantTextEditor();
9134  }
9135  return nullptr;
9136}
9137 
9138// static
9139bool nsContentUtils::IsNodeInEditableRegion(nsINode* aNode) {
9140  while (aNode) {
9141    if (aNode->IsEditable()) {
9142      return true;
9143    }
9144    aNode = aNode->GetParent();
9145  }
9146  return false;
9147}
9148 
9149// static
9150bool nsContentUtils::IsForbiddenRequestHeader(const nsACString& aHeader,
9151                                              const nsACString& aValue) {
9152  if (IsForbiddenSystemRequestHeader(aHeader)) {
9153    return true;
9154  }
9155 
9156  if ((nsContentUtils::IsOverrideMethodHeader(aHeader) &&
9157       nsContentUtils::ContainsForbiddenMethod(aValue))) {
9158    return true;
9159  }
9160 
9161  if (StringBeginsWith(aHeader, "proxy-"_ns,
9162                       nsCaseInsensitiveCStringComparator) ||
9163      StringBeginsWith(aHeader, "sec-"_ns,
9164                       nsCaseInsensitiveCStringComparator)) {
9165    return true;
9166  }
9167 
9168  return false;
9169}
9170 
9171// static
9172bool nsContentUtils::IsForbiddenSystemRequestHeader(const nsACString& aHeader) {
9173  static const char* kInvalidHeaders[] = {"accept-charset",
9174                                          "accept-encoding",
9175                                          "access-control-request-headers",
9176                                          "access-control-request-method",
9177                                          "connection",
9178                                          "content-length",
9179                                          "cookie",
9180                                          "cookie2",
9181                                          "date",
9182                                          "dnt",
9183                                          "expect",
9184                                          "host",
9185                                          "keep-alive",
9186                                          "origin",
9187                                          "referer",
9188                                          "set-cookie",
9189                                          "te",
9190                                          "trailer",
9191                                          "transfer-encoding",
9192                                          "upgrade",
9193                                          "via"};
9194  for (auto& kInvalidHeader : kInvalidHeaders) {
9195    if (aHeader.LowerCaseEqualsASCII(kInvalidHeader)) {
9196      return true;
9197    }
9198  }
9199  return false;
9200}
9201 
9202// static
9203bool nsContentUtils::IsForbiddenResponseHeader(const nsACString& aHeader) {
9204  return (aHeader.LowerCaseEqualsASCII("set-cookie") ||
9205          aHeader.LowerCaseEqualsASCII("set-cookie2"));
9206}
9207 
9208// static
9209bool nsContentUtils::IsOverrideMethodHeader(const nsACString& headerName) {
9210  return headerName.EqualsIgnoreCase("x-http-method-override") ||
9211         headerName.EqualsIgnoreCase("x-http-method") ||
9212         headerName.EqualsIgnoreCase("x-method-override");
9213}
9214 
9215// static
9216bool nsContentUtils::ContainsForbiddenMethod(const nsACString& headerValue) {
9217  bool hasInsecureMethod = false;
9218  nsCCharSeparatedTokenizer tokenizer(headerValue, ',');
9219 
9220  while (tokenizer.hasMoreTokens()) {
9221    const nsDependentCSubstring& value = tokenizer.nextToken();
9222 
9223    if (value.EqualsIgnoreCase("connect") || value.EqualsIgnoreCase("trace") ||
9224        value.EqualsIgnoreCase("track")) {
9225      hasInsecureMethod = true;
9226      break;
9227    }
9228  }
9229 
9230  return hasInsecureMethod;
9231}
9232 
9233Maybe<nsContentUtils::ParsedRange> nsContentUtils::ParseSingleRangeRequest(
9234    const nsACString& aHeaderValue, bool aAllowWhitespace) {
9235  // See https://fetch.spec.whatwg.org/#simple-range-header-value
9236  mozilla::Tokenizer p(aHeaderValue);
9237  Maybe<uint64_t> rangeStart;
9238  Maybe<uint64_t> rangeEnd;
9239 
9240  // Step 2 and 3
9241  if (!p.CheckWord("bytes")) {
9242    return Nothing();
9243  }
9244 
9245  // Step 4
9246  if (aAllowWhitespace) {
9247    p.SkipWhites();
9248  }
9249 
9250  // Step 5 and 6
9251  if (!p.CheckChar('=')) {
9252    return Nothing();
9253  }
9254 
9255  // Step 7
9256  if (aAllowWhitespace) {
9257    p.SkipWhites();
9258  }
9259 
9260  // Step 8 and 9
9261  uint64_t res;
9262  if (p.ReadInteger(&res)) {
9263    rangeStart = Some(res);
9264  }
9265 
9266  // Step 10
9267  if (aAllowWhitespace) {
9268    p.SkipWhites();
9269  }
9270 
9271  // Step 11
9272  if (!p.CheckChar('-')) {
9273    return Nothing();
9274  }
9275 
9276  // Step 13
9277  if (aAllowWhitespace) {
9278    p.SkipWhites();
9279  }
9280 
9281  // Step 14 and 15
9282  if (p.ReadInteger(&res)) {
9283    rangeEnd = Some(res);
9284  }
9285 
9286  // Step 16
9287  if (!p.CheckEOF()) {
9288    return Nothing();
9289  }
9290 
9291  // Step 17
9292  if (!rangeStart && !rangeEnd) {
9293    return Nothing();
9294  }
9295 
9296  // Step 18
9297  if (rangeStart && rangeEnd && *rangeStart > *rangeEnd) {
9298    return Nothing();
9299  }
9300 
9301  return Some(ParsedRange(rangeStart, rangeEnd));
9302}
9303 
9304// static
9305bool nsContentUtils::IsCorsUnsafeRequestHeaderValue(
9306    const nsACString& aHeaderValue) {
9307  const char* cur = aHeaderValue.BeginReading();
9308  const char* end = aHeaderValue.EndReading();
9309 
9310  while (cur != end) {
9311    // Implementation of
9312    // https://fetch.spec.whatwg.org/#cors-unsafe-request-header-byte Is less
9313    // than a space but not a horizontal tab
9314    if ((*cur < ' ' && *cur != '\t') || *cur == '"' || *cur == '(' ||
9315        *cur == ')' || *cur == ':' || *cur == '<' || *cur == '>' ||
9316        *cur == '?' || *cur == '@' || *cur == '[' || *cur == '\\' ||
9317        *cur == ']' || *cur == '{' || *cur == '}' ||
9318        *cur == 0x7F) {  // 0x75 is DEL
9319      return true;
9320    }
9321    cur++;
9322  }
9323  return false;
9324}
9325 
9326// static
9327bool nsContentUtils::IsAllowedNonCorsAccept(const nsACString& aHeaderValue) {
9328  if (IsCorsUnsafeRequestHeaderValue(aHeaderValue)) {
9329    return false;
9330  }
9331  return true;
9332}
9333 
9334// static
9335bool nsContentUtils::IsAllowedNonCorsContentType(
9336    const nsACString& aHeaderValue) {
9337  nsAutoCString contentType;
9338  nsAutoCString unused;
9339 
9340  if (IsCorsUnsafeRequestHeaderValue(aHeaderValue)) {
9341    return false;
9342  }
9343 
9344  nsresult rv = NS_ParseRequestContentType(aHeaderValue, contentType, unused);
9345  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
9346    return false;
9347  }
9348 
9349  return contentType.LowerCaseEqualsLiteral("text/plain") ||
9350         contentType.LowerCaseEqualsLiteral(
9351             "application/x-www-form-urlencoded") ||
9352         contentType.LowerCaseEqualsLiteral("multipart/form-data");
9353}
9354 
9355// static
9356bool nsContentUtils::IsAllowedNonCorsLanguage(const nsACString& aHeaderValue) {
9357  const char* cur = aHeaderValue.BeginReading();
9358  const char* end = aHeaderValue.EndReading();
9359 
9360  while (cur != end) {
9361    if ((*cur >= '0' && *cur <= '9') || (*cur >= 'A' && *cur <= 'Z') ||
9362        (*cur >= 'a' && *cur <= 'z') || *cur == ' ' || *cur == '*' ||
9363        *cur == ',' || *cur == '-' || *cur == '.' || *cur == ';' ||
9364        *cur == '=') {
9365      cur++;
9366      continue;
9367    }
9368    return false;
9369  }
9370  return true;
9371}
9372 
9373bool nsContentUtils::IsAllowedNonCorsRange(const nsACString& aHeaderValue) {
9374  Maybe<ParsedRange> parsedRange = ParseSingleRangeRequest(aHeaderValue, false);
9375  if (!parsedRange) {
9376    return false;
9377  }
9378 
9379  if (!parsedRange->Start()) {
9380    return false;
9381  }
9382 
9383  return true;
9384}
9385 
9386// static
9387bool nsContentUtils::IsCORSSafelistedRequestHeader(const nsACString& aName,
9388                                                   const nsACString& aValue) {
9389  // see https://fetch.spec.whatwg.org/#cors-safelisted-request-header
9390  if (aValue.Length() > 128) {
9391    return false;
9392  }
9393  return (aName.LowerCaseEqualsLiteral("accept") &&
9394          nsContentUtils::IsAllowedNonCorsAccept(aValue)) ||
9395         (aName.LowerCaseEqualsLiteral("accept-language") &&
9396          nsContentUtils::IsAllowedNonCorsLanguage(aValue)) ||
9397         (aName.LowerCaseEqualsLiteral("content-language") &&
9398          nsContentUtils::IsAllowedNonCorsLanguage(aValue)) ||
9399         (aName.LowerCaseEqualsLiteral("content-type") &&
9400          nsContentUtils::IsAllowedNonCorsContentType(aValue)) ||
9401         (aName.LowerCaseEqualsLiteral("range") &&
9402          nsContentUtils::IsAllowedNonCorsRange(aValue)) ||
9403         (StaticPrefs::network_http_idempotencyKey_enabled() &&
9404          aName.LowerCaseEqualsLiteral("idempotency-key"));
9405}
9406 
9407mozilla::LogModule* nsContentUtils::ResistFingerprintingLog() {
9408  return gResistFingerprintingLog;
9409}
9410mozilla::LogModule* nsContentUtils::DOMDumpLog() { return sDOMDumpLog; }
9411 
9412bool nsContentUtils::GetNodeTextContent(const nsINode* aNode, bool aDeep,
9413                                        nsAString& aResult,
9414                                        const fallible_t& aFallible) {
9415  aResult.Truncate();
9416  return AppendNodeTextContent(aNode, aDeep, aResult, aFallible);
9417}
9418 
9419bool nsContentUtils::GetNodeTextContent(const nsINode* aNode, bool aDeep,
9420                                        nsACString& aResult,
9421                                        const fallible_t& aFallible) {
9422  aResult.Truncate();
9423  return AppendNodeTextContent(aNode, aDeep, aResult, aFallible);
9424}
9425 
9426void nsContentUtils::GetNodeTextContent(const nsINode* aNode, bool aDeep,
9427                                        nsAString& aResult) {
9428  if (!GetNodeTextContent(aNode, aDeep, aResult, fallible)) {
9429    NS_ABORT_OOM(0);  // Unfortunately we don't know the allocation size
9430  }
9431}
9432 
9433void nsContentUtils::GetNodeTextContent(const nsINode* aNode, bool aDeep,
9434                                        nsACString& aResult) {
9435  if (!GetNodeTextContent(aNode, aDeep, aResult, fallible)) {
9436    NS_ABORT_OOM(0);  // Unfortunately we don't know the allocation size
9437  }
9438}
9439 
9440void nsContentUtils::DestroyMatchString(void* aData) {
9441  if (aData) {
9442    nsString* matchString = static_cast<nsString*>(aData);
9443    delete matchString;
9444  }
9445}
9446 
9447// Table ordered from most to least likely JS MIME types.
9448static constexpr std::string_view kJavascriptMIMETypes[] = {
9449    "text/javascript",
9450    "text/ecmascript",
9451    "application/javascript",
9452    "application/ecmascript",
9453    "application/x-javascript",
9454    "application/x-ecmascript",
9455    "text/javascript1.0",
9456    "text/javascript1.1",
9457    "text/javascript1.2",
9458    "text/javascript1.3",
9459    "text/javascript1.4",
9460    "text/javascript1.5",
9461    "text/jscript",
9462    "text/livescript",
9463    "text/x-ecmascript",
9464    "text/x-javascript"};
9465 
9466bool nsContentUtils::IsJavascriptMIMEType(const nsAString& aMIMEType) {
9467  for (std::string_view type : kJavascriptMIMETypes) {
9468    if (aMIMEType.LowerCaseEqualsASCII(type.data(), type.length())) {
9469      return true;
9470    }
9471  }
9472  return false;
9473}
9474 
9475bool nsContentUtils::IsJavascriptMIMEType(const nsACString& aMIMEType) {
9476  for (std::string_view type : kJavascriptMIMETypes) {
9477    if (aMIMEType.LowerCaseEqualsASCII(type.data(), type.length())) {
9478      return true;
9479    }
9480  }
9481  return false;
9482}
9483 
9484// https://mimesniff.spec.whatwg.org/#json-mime-type
9485bool nsContentUtils::IsJsonMimeType(const nsAString& aMimeType) {
9486  // Table ordered from most to least likely JSON MIME types.
9487  static constexpr std::string_view jsonTypes[] = {"application/json",
9488                                                   "text/json"};
9489 
9490  for (std::string_view type : jsonTypes) {
9491    if (aMimeType.LowerCaseEqualsASCII(type.data(), type.length())) {
9492      return true;
9493    }
9494  }
9495 
9496  // Below checks if the 'subtype' ends in "+json".
9497  RefPtr<MimeType> parsed = MimeType::Parse(aMimeType);
9498  if (!parsed) {
9499    return false;
9500  }
9501 
9502  nsAutoString subtype;
9503  parsed->GetSubtype(subtype);
9504  return StringEndsWith(subtype, u"+json"_ns);
9505}
9506 
9507// https://html.spec.whatwg.org/#fetch-a-single-module-script, 13.7.3
9508bool nsContentUtils::HasCssMimeTypeEssence(const nsAString& aMimeType) {
9509  nsString contentType, contentCharset;
9510  if (MimeType::Parse(aMimeType, contentType, contentCharset)) {
9511    return contentType.LowerCaseEqualsLiteral("text/css");
9512  }
9513  return false;
9514}
9515 
9516// https://html.spec.whatwg.org/#fetch-a-single-module-script, 13.6
9517bool nsContentUtils::HasWasmMimeTypeEssence(const nsAString& aMimeType) {
9518  nsString contentType, contentCharset;
9519  if (MimeType::Parse(aMimeType, contentType, contentCharset)) {
9520    return contentType.LowerCaseEqualsLiteral("application/wasm");
9521  }
9522  return false;
9523}
9524 
9525bool nsContentUtils::PrefetchPreloadEnabled(nsIDocShell* aDocShell) {
9526  //
9527  // SECURITY CHECK: disable prefetching and preloading from mailnews!
9528  //
9529  // walk up the docshell tree to see if any containing
9530  // docshell are of type MAIL.
9531  //
9532 
9533  if (!aDocShell) {
9534    return false;
9535  }
9536 
9537  nsCOMPtr<nsIDocShell> docshell = aDocShell;
9538  nsCOMPtr<nsIDocShellTreeItem> parentItem;
9539 
9540  do {
9541    auto appType = docshell->GetAppType();
9542    if (appType == nsIDocShell::APP_TYPE_MAIL) {
9543      return false;  // do not prefetch, preload, preconnect from mailnews
9544    }
9545 
9546    docshell->GetInProcessParent(getter_AddRefs(parentItem));
9547    if (parentItem) {
9548      docshell = do_QueryInterface(parentItem);
9549      if (!docshell) {
9550        NS_ERROR("cannot get a docshell from a treeItem!")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "cannot get a docshell from a treeItem!"
, "Error", "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 9550); MOZ_PretendNoReturn(); } while (0);
9551        return false;
9552      }
9553    }
9554  } while (parentItem);
9555 
9556  return true;
9557}
9558 
9559uint64_t nsContentUtils::GetInnerWindowID(nsIRequest* aRequest) {
9560  // can't do anything if there's no nsIRequest!
9561  if (!aRequest) {
9562    return 0;
9563  }
9564 
9565  if (nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest)) {
9566    nsCOMPtr loadInfo = channel->LoadInfo();
9567    if (auto id = loadInfo->GetInnerWindowID()) {
9568      return id;
9569    }
9570    if (auto id = loadInfo->GetTriggeringWindowId()) {
9571      return id;
9572    }
9573  }
9574 
9575  nsCOMPtr<nsILoadGroup> loadGroup;
9576  nsresult rv = aRequest->GetLoadGroup(getter_AddRefs(loadGroup));
9577 
9578  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0))) || !loadGroup) {
9579    return 0;
9580  }
9581 
9582  return GetInnerWindowID(loadGroup);
9583}
9584 
9585uint64_t nsContentUtils::GetInnerWindowID(nsILoadGroup* aLoadGroup) {
9586  if (!aLoadGroup) {
9587    return 0;
9588  }
9589 
9590  nsCOMPtr<nsIInterfaceRequestor> callbacks;
9591  nsresult rv = aLoadGroup->GetNotificationCallbacks(getter_AddRefs(callbacks));
9592  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0))) || !callbacks) {
9593    return 0;
9594  }
9595 
9596  nsCOMPtr<nsILoadContext> loadContext = do_GetInterface(callbacks);
9597  if (!loadContext) {
9598    return 0;
9599  }
9600 
9601  nsCOMPtr<mozIDOMWindowProxy> window;
9602  rv = loadContext->GetAssociatedWindow(getter_AddRefs(window));
9603  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0))) || !window) {
9604    return 0;
9605  }
9606 
9607  auto* pwindow = nsPIDOMWindowOuter::From(window);
9608  if (!pwindow) {
9609    return 0;
9610  }
9611 
9612  nsPIDOMWindowInner* inner = pwindow->GetCurrentInnerWindow();
9613  return inner ? inner->WindowID() : 0;
9614}
9615 
9616// static
9617void nsContentUtils::MaybeFixIPv6Host(nsACString& aHost) {
9618  if (aHost.FindChar(':') != -1) {  // Escape IPv6 address
9619    MOZ_ASSERT(!aHost.IsEmpty())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!aHost.IsEmpty())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!aHost.IsEmpty()))), 0))) { do
 { } while (false); MOZ_ReportAssertionFailure("!aHost.IsEmpty()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9619); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!aHost.IsEmpty()" ")"); do { MOZ_CrashSequence
(__null, 9619); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
9620    if (aHost.Length() >= 2 && aHost[0] != '[' &&
9621        aHost[aHost.Length() - 1] != ']') {
9622      aHost.Insert('[', 0);
9623      aHost.Append(']');
9624    }
9625  }
9626}
9627 
9628nsresult nsContentUtils::GetHostOrIPv6WithBrackets(nsIURI* aURI,
9629                                                   nsACString& aHost) {
9630  aHost.Truncate();
9631  nsresult rv = aURI->GetHost(aHost);
9632  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {  // Some URIs do not have a host
9633    return rv;
9634  }
9635 
9636  MaybeFixIPv6Host(aHost);
9637 
9638  return NS_OK;
9639}
9640 
9641nsresult nsContentUtils::GetHostOrIPv6WithBrackets(nsIURI* aURI,
9642                                                   nsAString& aHost) {
9643  nsAutoCString hostname;
9644  nsresult rv = GetHostOrIPv6WithBrackets(aURI, hostname);
9645  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
9646    return rv;
9647  }
9648  CopyUTF8toUTF16(hostname, aHost);
9649  return NS_OK;
9650}
9651 
9652nsresult nsContentUtils::GetHostOrIPv6WithBrackets(nsIPrincipal* aPrincipal,
9653                                                   nsACString& aHost) {
9654  nsresult rv = aPrincipal->GetAsciiHost(aHost);
9655  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {  // Some URIs do not have a host
9656    return rv;
9657  }
9658 
9659  MaybeFixIPv6Host(aHost);
9660  return NS_OK;
9661}
9662 
9663nsresult nsContentUtils::GetAsciiHostOrIPv6WithBrackets(nsIURI* aURI,
9664                                                        nsACString& aHost) {
9665  aHost.Truncate();
9666  nsresult rv = aURI->GetAsciiHost(aHost);
9667  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
9668    return rv;
9669  }
9670 
9671  MaybeFixIPv6Host(aHost);
9672  return NS_OK;
9673}
9674 
9675CallState nsContentUtils::CallOnAllRemoteChildren(
9676    MessageBroadcaster* aManager,
9677    const std::function<CallState(BrowserParent*)>& aCallback) {
9678  uint32_t browserChildCount = aManager->ChildCount();
9679  for (uint32_t j = 0; j < browserChildCount; ++j) {
9680    RefPtr<MessageListenerManager> childMM = aManager->GetChildAt(j);
9681    if (!childMM) {
9682      continue;
9683    }
9684 
9685    RefPtr<MessageBroadcaster> nonLeafMM = MessageBroadcaster::From(childMM);
9686    if (nonLeafMM) {
9687      if (CallOnAllRemoteChildren(nonLeafMM, aCallback) == CallState::Stop) {
9688        return CallState::Stop;
9689      }
9690      continue;
9691    }
9692 
9693    mozilla::dom::ipc::MessageManagerCallback* cb = childMM->GetCallback();
9694    if (cb) {
9695      nsFrameLoader* fl = static_cast<nsFrameLoader*>(cb);
9696      BrowserParent* remote = BrowserParent::GetFrom(fl);
9697      if (remote && aCallback) {
9698        if (aCallback(remote) == CallState::Stop) {
9699          return CallState::Stop;
9700        }
9701      }
9702    }
9703  }
9704 
9705  return CallState::Continue;
9706}
9707 
9708void nsContentUtils::CallOnAllRemoteChildren(
9709    nsPIDOMWindowOuter* aWindow,
9710    const std::function<CallState(BrowserParent*)>& aCallback) {
9711  nsGlobalWindowOuter* window = nsGlobalWindowOuter::Cast(aWindow);
9712  if (window->IsChromeWindow()) {
9713    RefPtr<MessageBroadcaster> windowMM = window->GetMessageManager();
9714    if (windowMM) {
9715      CallOnAllRemoteChildren(windowMM, aCallback);
9716    }
9717  }
9718}
9719 
9720bool nsContentUtils::IPCTransferableDataItemHasKnownFlavor(
9721    const IPCTransferableDataItem& aItem) {
9722  // Unknown types are converted to kCustomTypesMime.
9723  if (aItem.flavor().EqualsASCII(kCustomTypesMime"application/x-moz-custom-clipdata")) {
9724    return true;
9725  }
9726 
9727  for (const char* format : DataTransfer::kKnownFormats) {
9728    if (aItem.flavor().EqualsASCII(format)) {
9729      return true;
9730    }
9731  }
9732 
9733  // Clipboard custom type. Only recognise "web foo/bar" as a known flavor
9734  // when the web custom format feature is enabled; otherwise DnD or other
9735  // callers must not be able to slip web custom flavors through this helper.
9736  const nsCString& flavor = aItem.flavor();
9737  if (StaticPrefs::dom_clipboard_customFormatSupport_enabled() &&
9738      StringBeginsWith(flavor, nsLiteralCString(kWebCustomFormatPrefix"web "))) {
9739    if (RefPtr<CMimeType> parsedType = CMimeType::Parse(Substring(
9740            flavor, strlen(kWebCustomFormatPrefix"web "), flavor.Length()))) {
9741      return true;
9742    }
9743  }
9744 
9745  return false;
9746}
9747 
9748nsresult nsContentUtils::IPCTransferableDataToTransferable(
9749    const IPCTransferableData& aTransferableData, bool aAddDataFlavor,
9750    nsITransferable* aTransferable, const bool aFilterUnknownFlavors) {
9751  nsresult rv;
9752  const nsTArray<IPCTransferableDataItem>& items = aTransferableData.items();
9753  for (const auto& item : items) {
9754    if (aFilterUnknownFlavors) {
9755      if (item.flavor().EqualsLiteral(kFilePromiseDirectoryMime"application/x-moz-file-promise-dir")) {
9756        NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9758)
9757            "Ignoring unknown flavor in "NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9758)
9758            "nsContentUtils::IPCTransferableDataToTransferable")NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9758);
9759        continue;
9760      }
9761 
9762      if ((item.flavor().EqualsLiteral(kFilePromiseMime"application/x-moz-file-promise") ||
9763           item.flavor().EqualsLiteral(kFilePromiseURLMime"application/x-moz-file-promise-url") ||
9764           item.flavor().EqualsLiteral(kFilePromiseDestFilename"application/x-moz-file-promise-dest-filename"))
9765#ifdef XP_WIN
9766          && !StaticPrefs::clipboard_imageAsFile_enabled()
9767#endif
9768      ) {
9769        NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9771)
9770            "Ignoring unknown flavor in "NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9771)
9771            "nsContentUtils::IPCTransferableDataToTransferable")NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9771);
9772        continue;
9773      }
9774 
9775      if (!IPCTransferableDataItemHasKnownFlavor(item)) {
9776        NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9778)
9777            "Ignoring unknown flavor in "NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9778)
9778            "nsContentUtils::IPCTransferableDataToTransferable")NS_DebugBreak(NS_DEBUG_WARNING, "Ignoring unknown flavor in "
 "nsContentUtils::IPCTransferableDataToTransferable", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9778);
9779        continue;
9780      }
9781    }
9782 
9783    if (aAddDataFlavor) {
9784      aTransferable->AddDataFlavor(item.flavor().get());
9785    }
9786 
9787    nsCOMPtr<nsISupports> transferData;
9788    switch (item.data().type()) {
9789      case IPCTransferableDataType::TIPCTransferableDataString: {
9790        const auto& data = item.data().get_IPCTransferableDataString();
9791        nsCOMPtr<nsISupportsString> dataWrapper =
9792            do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID"@mozilla.org/supports-string;1", &rv);
9793        NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9793); return rv; } } while (false);
9794        rv = dataWrapper->SetData(nsDependentSubstring(
9795            reinterpret_cast<const char16_t*>(data.data().Data()),
9796            data.data().Size() / sizeof(char16_t)));
9797        NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9797); return rv; } } while (false);
9798        transferData = dataWrapper;
9799        break;
9800      }
9801      case IPCTransferableDataType::TIPCTransferableDataCString: {
9802        const auto& data = item.data().get_IPCTransferableDataCString();
9803        nsCOMPtr<nsISupportsCString> dataWrapper =
9804            do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID"@mozilla.org/supports-cstring;1", &rv);
9805        NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9805); return rv; } } while (false);
9806        rv = dataWrapper->SetData(nsDependentCSubstring(
9807            reinterpret_cast<const char*>(data.data().Data()),
9808            data.data().Size()));
9809        NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9809); return rv; } } while (false);
9810        transferData = dataWrapper;
9811        break;
9812      }
9813      case IPCTransferableDataType::TIPCTransferableDataInputStream: {
9814        const auto& data = item.data().get_IPCTransferableDataInputStream();
9815        nsCOMPtr<nsIInputStream> stream;
9816        rv = NS_NewByteInputStream(getter_AddRefs(stream),
9817                                   AsChars(data.data().AsSpan()),
9818                                   NS_ASSIGNMENT_COPY);
9819        NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9819); return rv; } } while (false);
9820        transferData = stream.forget();
9821        break;
9822      }
9823      case IPCTransferableDataType::TIPCTransferableDataImageContainer: {
9824        const auto& data = item.data().get_IPCTransferableDataImageContainer();
9825        nsCOMPtr<imgIContainer> container = IPCImageToImage(data.image());
9826        if (!container) {
9827          return NS_ERROR_FAILURE;
9828        }
9829        transferData = container;
9830        break;
9831      }
9832      case IPCTransferableDataType::TIPCTransferableDataBlob: {
9833        const auto& data = item.data().get_IPCTransferableDataBlob();
9834        transferData = IPCBlobUtils::Deserialize(data.blob());
9835        break;
9836      }
9837      case IPCTransferableDataType::T__None:
9838        MOZ_ASSERT_UNREACHABLE()do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9838
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: "
 ")"); do { MOZ_CrashSequence(__null, 9838); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
9839        return NS_ERROR_FAILURE;
9840    }
9841 
9842    rv = aTransferable->SetTransferData(item.flavor().get(), transferData);
9843    NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9843); return rv; } } while (false);
9844  }
9845  return NS_OK;
9846}
9847 
9848nsresult nsContentUtils::IPCTransferableToTransferable(
9849    const IPCTransferable& aIPCTransferable, bool aAddDataFlavor,
9850    nsITransferable* aTransferable, const bool aFilterUnknownFlavors) {
9851  // Note that we need to set privacy status of transferable before adding any
9852  // data into it.
9853  aTransferable->SetIsPrivateData(aIPCTransferable.isPrivateData());
9854 
9855  nsresult rv =
9856      IPCTransferableDataToTransferable(aIPCTransferable.data(), aAddDataFlavor,
9857                                        aTransferable, aFilterUnknownFlavors);
9858  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9858); return rv; } } while (false);
9859 
9860  if (aIPCTransferable.cookieJarSettings().isSome()) {
9861    nsCOMPtr<nsICookieJarSettings> cookieJarSettings;
9862    net::CookieJarSettings::Deserialize(
9863        aIPCTransferable.cookieJarSettings().ref(),
9864        getter_AddRefs(cookieJarSettings));
9865    aTransferable->SetCookieJarSettings(cookieJarSettings);
9866  }
9867  aTransferable->SetReferrerInfo(aIPCTransferable.referrerInfo());
9868  aTransferable->SetDataPrincipal(aIPCTransferable.dataPrincipal());
9869  aTransferable->SetContentPolicyType(aIPCTransferable.contentPolicyType());
9870 
9871  return NS_OK;
9872}
9873 
9874nsresult nsContentUtils::IPCTransferableDataItemToVariant(
9875    const IPCTransferableDataItem& aItem, nsIWritableVariant* aVariant) {
9876  MOZ_ASSERT(aVariant)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aVariant)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aVariant))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aVariant", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9876); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aVariant" ")"
); do { MOZ_CrashSequence(__null, 9876); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
9877 
9878  switch (aItem.data().type()) {
9879    case IPCTransferableDataType::TIPCTransferableDataString: {
9880      const auto& data = aItem.data().get_IPCTransferableDataString();
9881      return aVariant->SetAsAString(nsDependentSubstring(
9882          reinterpret_cast<const char16_t*>(data.data().Data()),
9883          data.data().Size() / sizeof(char16_t)));
9884    }
9885    case IPCTransferableDataType::TIPCTransferableDataCString: {
9886      const auto& data = aItem.data().get_IPCTransferableDataCString();
9887      return aVariant->SetAsACString(nsDependentCSubstring(
9888          reinterpret_cast<const char*>(data.data().Data()),
9889          data.data().Size()));
9890    }
9891    case IPCTransferableDataType::TIPCTransferableDataInputStream: {
9892      const auto& data = aItem.data().get_IPCTransferableDataInputStream();
9893      nsCOMPtr<nsIInputStream> stream;
9894      nsresult rv = NS_NewByteInputStream(getter_AddRefs(stream),
9895                                          AsChars(data.data().AsSpan()),
9896                                          NS_ASSIGNMENT_COPY);
9897      NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 9897); return rv; } } while (false);
9898      return aVariant->SetAsISupports(stream);
9899    }
9900    case IPCTransferableDataType::TIPCTransferableDataImageContainer: {
9901      const auto& data = aItem.data().get_IPCTransferableDataImageContainer();
9902      nsCOMPtr<imgIContainer> container = IPCImageToImage(data.image());
9903      if (!container) {
9904        return NS_ERROR_FAILURE;
9905      }
9906      return aVariant->SetAsISupports(container);
9907    }
9908    case IPCTransferableDataType::TIPCTransferableDataBlob: {
9909      const auto& data = aItem.data().get_IPCTransferableDataBlob();
9910      RefPtr<BlobImpl> blobImpl = IPCBlobUtils::Deserialize(data.blob());
9911      return aVariant->SetAsISupports(blobImpl);
9912    }
9913    case IPCTransferableDataType::T__None:
9914      break;
9915  }
9916 
9917  MOZ_ASSERT_UNREACHABLE()do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 9917
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: "
 ")"); do { MOZ_CrashSequence(__null, 9917); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
9918  return NS_ERROR_UNEXPECTED;
9919}
9920 
9921void nsContentUtils::TransferablesToIPCTransferableDatas(
9922    nsIArray* aTransferables, nsTArray<IPCTransferableData>& aIPC,
9923    bool aInSyncMessage, mozilla::dom::ContentParent* aParent) {
9924  aIPC.Clear();
9925  if (aTransferables) {
9926    uint32_t transferableCount = 0;
9927    aTransferables->GetLength(&transferableCount);
9928    for (uint32_t i = 0; i < transferableCount; ++i) {
9929      IPCTransferableData* dt = aIPC.AppendElement();
9930      nsCOMPtr<nsITransferable> transferable =
9931          do_QueryElementAt(aTransferables, i);
9932      TransferableToIPCTransferableData(transferable, dt, aInSyncMessage,
9933                                        aParent);
9934    }
9935  }
9936}
9937 
9938nsresult nsContentUtils::CalculateBufferSizeForImage(
9939    const uint32_t& aStride, const IntSize& aImageSize,
9940    const SurfaceFormat& aFormat, size_t* aMaxBufferSize,
9941    size_t* aUsedBufferSize) {
9942  if (aImageSize.width <= 0 || aImageSize.height <= 0) {
9943    return NS_ERROR_FAILURE;
9944  }
9945 
9946  CheckedInt32 rowBytes =
9947      CheckedInt32(aImageSize.width) * BytesPerPixel(aFormat);
9948  CheckedInt32 stride(aStride);
9949  if (!rowBytes.isValid() || !stride.isValid() ||
9950      stride.value() < rowBytes.value()) {
9951    return NS_ERROR_FAILURE;
9952  }
9953 
9954  CheckedInt32 requiredBytes = stride * CheckedInt32(aImageSize.height);
9955  CheckedInt32 usedBytes = requiredBytes - stride + rowBytes;
9956  if (!requiredBytes.isValid() || !usedBytes.isValid()) {
9957    return NS_ERROR_FAILURE;
9958  }
9959 
9960  *aMaxBufferSize = requiredBytes.value();
9961  *aUsedBufferSize = usedBytes.value();
9962  return NS_OK;
9963}
9964 
9965static already_AddRefed<DataSourceSurface> BigBufferToDataSurface(
9966    const BigBuffer& aData, uint32_t aStride, const IntSize& aImageSize,
9967    SurfaceFormat aFormat) {
9968  if (!aData.Size() || !aImageSize.width || !aImageSize.height) {
9969    return nullptr;
9970  }
9971 
9972  // Validate shared memory buffer size
9973  size_t imageBufLen = 0;
9974  size_t maxBufLen = 0;
9975  if (NS_FAILED(nsContentUtils::CalculateBufferSizeForImage(((bool)(__builtin_expect(!!(NS_FAILED_impl(nsContentUtils::CalculateBufferSizeForImage
( aStride, aImageSize, aFormat, &maxBufLen, &imageBufLen
))), 0)))
9976          aStride, aImageSize, aFormat, &maxBufLen, &imageBufLen))((bool)(__builtin_expect(!!(NS_FAILED_impl(nsContentUtils::CalculateBufferSizeForImage
( aStride, aImageSize, aFormat, &maxBufLen, &imageBufLen
))), 0)))) {
9977    return nullptr;
9978  }
9979  if (imageBufLen > aData.Size()) {
9980    return nullptr;
9981  }
9982  return CreateDataSourceSurfaceFromData(aImageSize, aFormat, aData.Data(),
9983                                         aStride);
9984}
9985 
9986bool nsContentUtils::IsFlavorImage(const nsACString& aFlavor) {
9987  return aFlavor.EqualsLiteral(kNativeImageMime"application/x-moz-nativeimage") ||
9988         aFlavor.EqualsLiteral(kJPEGImageMime"image/jpeg") ||
9989         aFlavor.EqualsLiteral(kJPGImageMime"image/jpg") ||
9990         aFlavor.EqualsLiteral(kPNGImageMime"image/png") ||
9991         aFlavor.EqualsLiteral(kGIFImageMime"image/gif");
9992}
9993 
9994// FIXME: This can probably be removed once bug 1783240 lands, as `nsString`
9995// will be implicitly serialized in shmem when sent over IPDL directly.
9996static IPCTransferableDataString AsIPCTransferableDataString(
9997    Span<const char16_t> aInput) {
9998  return IPCTransferableDataString{BigBuffer(AsBytes(aInput))};
9999}
10000 
10001// FIXME: This can probably be removed once bug 1783240 lands, as `nsCString`
10002// will be implicitly serialized in shmem when sent over IPDL directly.
10003static IPCTransferableDataCString AsIPCTransferableDataCString(
10004    Span<const char> aInput) {
10005  return IPCTransferableDataCString{BigBuffer(AsBytes(aInput))};
10006}
10007 
10008void nsContentUtils::TransferableToIPCTransferableData(
10009    nsITransferable* aTransferable, IPCTransferableData* aTransferableData,
10010    bool aInSyncMessage, mozilla::dom::ContentParent* aParent) {
10011  MOZ_ASSERT_IF(XRE_IsParentProcess(), aParent)do { if (XRE_IsParentProcess()) { do { static_assert( mozilla
::detail::AssertionConditionType<decltype(aParent)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(aParent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aParent", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10011); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aParent" ")"
); do { MOZ_CrashSequence(__null, 10011); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); } } while (
false);
10012 
10013  if (aTransferable) {
10014    nsTArray<nsCString> flavorList;
10015    aTransferable->FlavorsTransferableCanExport(flavorList);
10016 
10017    for (uint32_t j = 0; j < flavorList.Length(); ++j) {
10018      nsCString& flavorStr = flavorList[j];
10019      if (!flavorStr.Length()) {
10020        continue;
10021      }
10022 
10023      nsCOMPtr<nsISupports> data;
10024      nsresult rv =
10025          aTransferable->GetTransferData(flavorStr.get(), getter_AddRefs(data));
10026 
10027      if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0))) || !data) {
10028        if (aInSyncMessage) {
10029          // Can't do anything.
10030          // FIXME: This shouldn't be the case anymore!
10031          continue;
10032        }
10033 
10034        // This is a hack to support kFilePromiseMime.
10035        // On Windows there just needs to be an entry for it,
10036        // and for OSX we need to create
10037        // nsContentAreaDragDropDataProvider as nsIFlavorDataProvider.
10038        if (flavorStr.EqualsLiteral(kFilePromiseMime"application/x-moz-file-promise")) {
10039          IPCTransferableDataItem* item =
10040              aTransferableData->items().AppendElement();
10041          item->flavor() = flavorStr;
10042          item->data() =
10043              AsIPCTransferableDataString(NS_ConvertUTF8toUTF16(flavorStr));
10044          continue;
10045        }
10046 
10047        // Empty element, transfer only the flavor
10048        IPCTransferableDataItem* item =
10049            aTransferableData->items().AppendElement();
10050        item->flavor() = flavorStr;
10051        item->data() = AsIPCTransferableDataString(EmptyString());
10052        continue;
10053      }
10054 
10055      // We need to handle nsIInputStream before nsISupportsCString, otherwise
10056      // nsStringInputStream would be converted into a wrong type.
10057      if (nsCOMPtr<nsIInputStream> stream = do_QueryInterface(data)) {
10058        IPCTransferableDataItem* item =
10059            aTransferableData->items().AppendElement();
10060        item->flavor() = flavorStr;
10061        nsCString imageData;
10062        DebugOnly<nsresult> rv =
10063            NS_ConsumeStream(stream, UINT32_MAX(4294967295U), imageData);
10064        MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(rv != NS_BASE_STREAM_WOULD_BLOCK)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(rv != NS_BASE_STREAM_WOULD_BLOCK
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"rv != NS_BASE_STREAM_WOULD_BLOCK" " (" "cannot use async input streams in nsITransferable right now"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10066
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "rv != NS_BASE_STREAM_WOULD_BLOCK"
 ") (" "cannot use async input streams in nsITransferable right now"
 ")"); do { MOZ_CrashSequence(__null, 10066); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false)
10065            rv != NS_BASE_STREAM_WOULD_BLOCK,do { static_assert( mozilla::detail::AssertionConditionType<
decltype(rv != NS_BASE_STREAM_WOULD_BLOCK)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(rv != NS_BASE_STREAM_WOULD_BLOCK
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"rv != NS_BASE_STREAM_WOULD_BLOCK" " (" "cannot use async input streams in nsITransferable right now"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10066
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "rv != NS_BASE_STREAM_WOULD_BLOCK"
 ") (" "cannot use async input streams in nsITransferable right now"
 ")"); do { MOZ_CrashSequence(__null, 10066); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false)
10066            "cannot use async input streams in nsITransferable right now")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(rv != NS_BASE_STREAM_WOULD_BLOCK)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(rv != NS_BASE_STREAM_WOULD_BLOCK
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"rv != NS_BASE_STREAM_WOULD_BLOCK" " (" "cannot use async input streams in nsITransferable right now"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10066
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "rv != NS_BASE_STREAM_WOULD_BLOCK"
 ") (" "cannot use async input streams in nsITransferable right now"
 ")"); do { MOZ_CrashSequence(__null, 10066); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
10067        // FIXME: This can probably be simplified once bug 1783240 lands, as
10068        // `nsCString` will be implicitly serialized in shmem when sent over
10069        // IPDL directly.
10070        item->data() =
10071            IPCTransferableDataInputStream(BigBuffer(AsBytes(Span(imageData))));
10072        continue;
10073      }
10074 
10075      if (nsCOMPtr<nsISupportsString> text = do_QueryInterface(data)) {
10076        nsAutoString dataAsString;
10077        MOZ_ALWAYS_SUCCEEDS(text->GetData(dataAsString))do { if ((__builtin_expect(!!(((bool)(__builtin_expect(!!(!NS_FAILED_impl
(text->GetData(dataAsString))), 1)))), 1))) { } else { do {
 do { } while (false); MOZ_ReportCrash("" "NS_SUCCEEDED(text->GetData(dataAsString))"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10077); AnnotateMozCrashReason
("MOZ_CRASH(" "NS_SUCCEEDED(text->GetData(dataAsString))" ")"
); do { MOZ_CrashSequence(__null, 10077); __attribute__((nomerge
)) ::abort(); } while (false); } while (false); } } while (false
);
10078 
10079        IPCTransferableDataItem* item =
10080            aTransferableData->items().AppendElement();
10081        item->flavor() = flavorStr;
10082        item->data() = AsIPCTransferableDataString(dataAsString);
10083        continue;
10084      }
10085 
10086      if (nsCOMPtr<nsISupportsCString> ctext = do_QueryInterface(data)) {
10087        nsAutoCString dataAsString;
10088        MOZ_ALWAYS_SUCCEEDS(ctext->GetData(dataAsString))do { if ((__builtin_expect(!!(((bool)(__builtin_expect(!!(!NS_FAILED_impl
(ctext->GetData(dataAsString))), 1)))), 1))) { } else { do
 { do { } while (false); MOZ_ReportCrash("" "NS_SUCCEEDED(ctext->GetData(dataAsString))"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10088); AnnotateMozCrashReason
("MOZ_CRASH(" "NS_SUCCEEDED(ctext->GetData(dataAsString))"
 ")"); do { MOZ_CrashSequence(__null, 10088); __attribute__((
nomerge)) ::abort(); } while (false); } while (false); } } while
 (false);
10089 
10090        IPCTransferableDataItem* item =
10091            aTransferableData->items().AppendElement();
10092        item->flavor() = flavorStr;
10093        item->data() = AsIPCTransferableDataCString(dataAsString);
10094        continue;
10095      }
10096 
10097      if (nsCOMPtr<imgIContainer> image = do_QueryInterface(data)) {
10098        // Images to be placed on the clipboard are imgIContainers.
10099        RefPtr<mozilla::gfx::SourceSurface> surface = image->GetFrame(
10100            imgIContainer::FRAME_CURRENT,
10101            imgIContainer::FLAG_SYNC_DECODE | imgIContainer::FLAG_ASYNC_NOTIFY);
10102        if (!surface) {
10103          continue;
10104        }
10105        RefPtr<mozilla::gfx::DataSourceSurface> dataSurface =
10106            surface->GetDataSurface();
10107        if (!dataSurface) {
10108          continue;
10109        }
10110 
10111        auto imageData = nsContentUtils::SurfaceToIPCImage(*dataSurface);
10112        if (!imageData) {
10113          continue;
10114        }
10115 
10116        IPCTransferableDataItem* item =
10117            aTransferableData->items().AppendElement();
10118        item->flavor() = flavorStr;
10119        item->data() = IPCTransferableDataImageContainer(std::move(*imageData));
10120        continue;
10121      }
10122 
10123      // Otherwise, handle this as a file.
10124      nsCOMPtr<BlobImpl> blobImpl;
10125      if (nsCOMPtr<nsIFile> file = do_QueryInterface(data)) {
10126        if (aParent) {
10127          bool isDir = false;
10128          if (NS_SUCCEEDED(file->IsDirectory(&isDir))((bool)(__builtin_expect(!!(!NS_FAILED_impl(file->IsDirectory
(&isDir))), 1))) && isDir) {
10129            nsAutoString path;
10130            if (NS_WARN_IF(NS_FAILED(file->GetPath(path)))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(file
->GetPath(path))), 0))), "NS_FAILED(file->GetPath(path))"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10130)) {
10131              continue;
10132            }
10133 
10134            RefPtr<FileSystemSecurity> fss = FileSystemSecurity::GetOrCreate();
10135            fss->GrantAccessToContentProcess(aParent->ChildID(), path);
10136          }
10137        }
10138 
10139        blobImpl = new FileBlobImpl(file);
10140 
10141        IgnoredErrorResult rv;
10142 
10143        // Ensure that file data is cached no that the content process
10144        // has this data available to it when passed over:
10145        blobImpl->GetSize(rv);
10146        if (NS_WARN_IF(rv.Failed())NS_warn_if_impl(rv.Failed(), "rv.Failed()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10146)) {
10147          continue;
10148        }
10149 
10150        blobImpl->GetLastModified(rv);
10151        if (NS_WARN_IF(rv.Failed())NS_warn_if_impl(rv.Failed(), "rv.Failed()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10151)) {
10152          continue;
10153        }
10154      } else {
10155        if (aInSyncMessage) {
10156          // Can't do anything.
10157          // FIXME: This shouldn't be the case anymore!
10158          continue;
10159        }
10160 
10161        blobImpl = do_QueryInterface(data);
10162      }
10163 
10164      if (blobImpl) {
10165        // If we failed to create the blob actor, then this blob probably
10166        // can't get the file size for the underlying file, ignore it for
10167        // now. TODO pass this through anyway.
10168        IPCBlob ipcBlob;
10169        nsresult rv = IPCBlobUtils::Serialize(blobImpl, ipcBlob);
10170        if (NS_WARN_IF(NS_FAILED(rv))NS_warn_if_impl(((bool)(__builtin_expect(!!(NS_FAILED_impl(rv
)), 0))), "NS_FAILED(rv)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10170)) {
10171          continue;
10172        }
10173 
10174        IPCTransferableDataItem* item =
10175            aTransferableData->items().AppendElement();
10176        item->flavor() = flavorStr;
10177        item->data() = IPCTransferableDataBlob(ipcBlob);
10178      }
10179    }
10180  }
10181}
10182 
10183void nsContentUtils::TransferableToIPCTransferable(
10184    nsITransferable* aTransferable, IPCTransferable* aIPCTransferable,
10185    bool aInSyncMessage, mozilla::dom::ContentParent* aParent) {
10186  IPCTransferableData ipcTransferableData;
10187  TransferableToIPCTransferableData(aTransferable, &ipcTransferableData,
10188                                    aInSyncMessage, aParent);
10189 
10190  Maybe<net::CookieJarSettingsArgs> cookieJarSettingsArgs;
10191  if (nsCOMPtr<nsICookieJarSettings> cookieJarSettings =
10192          aTransferable->GetCookieJarSettings()) {
10193    net::CookieJarSettingsArgs args;
10194    net::CookieJarSettings::Cast(cookieJarSettings)->Serialize(args);
10195    cookieJarSettingsArgs = Some(std::move(args));
10196  }
10197 
10198  aIPCTransferable->data() = std::move(ipcTransferableData);
10199  aIPCTransferable->isPrivateData() = aTransferable->GetIsPrivateData();
10200  aIPCTransferable->dataPrincipal() = aTransferable->GetDataPrincipal();
10201  aIPCTransferable->cookieJarSettings() = std::move(cookieJarSettingsArgs);
10202  aIPCTransferable->contentPolicyType() = aTransferable->GetContentPolicyType();
10203  aIPCTransferable->referrerInfo() = aTransferable->GetReferrerInfo();
10204}
10205 
10206Maybe<BigBuffer> nsContentUtils::GetSurfaceData(DataSourceSurface& aSurface,
10207                                                size_t* aLength,
10208                                                int32_t* aStride) {
10209  mozilla::gfx::DataSourceSurface::MappedSurface map;
10210  if (!aSurface.Map(mozilla::gfx::DataSourceSurface::MapType::READ, &map)) {
10211    return Nothing();
10212  }
10213 
10214  size_t bufLen = 0;
10215  size_t maxBufLen = 0;
10216  nsresult rv = nsContentUtils::CalculateBufferSizeForImage(
10217      map.mStride, aSurface.GetSize(), aSurface.GetFormat(), &maxBufLen,
10218      &bufLen);
10219  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
10220    aSurface.Unmap();
10221    return Nothing();
10222  }
10223 
10224  BigBuffer surfaceData(maxBufLen);
10225  memcpy(surfaceData.Data(), map.mData, bufLen);
10226  memset(surfaceData.Data() + bufLen, 0, maxBufLen - bufLen);
10227 
10228  *aLength = maxBufLen;
10229  *aStride = map.mStride;
10230 
10231  aSurface.Unmap();
10232  return Some(std::move(surfaceData));
10233}
10234 
10235Maybe<IPCImage> nsContentUtils::SurfaceToIPCImage(DataSourceSurface& aSurface) {
10236  size_t len = 0;
10237  int32_t stride = 0;
10238  auto mem = GetSurfaceData(aSurface, &len, &stride);
10239  if (!mem) {
10240    return Nothing();
10241  }
10242  return Some(IPCImage{std::move(*mem), uint32_t(stride), aSurface.GetFormat(),
10243                       ImageIntSize::FromUnknownSize(aSurface.GetSize())});
10244}
10245 
10246already_AddRefed<DataSourceSurface> nsContentUtils::IPCImageToSurface(
10247    const IPCImage& aImage) {
10248  return BigBufferToDataSurface(aImage.data(), aImage.stride(),
10249                                aImage.size().ToUnknownSize(), aImage.format());
10250}
10251 
10252already_AddRefed<imgIContainer> nsContentUtils::IPCImageToImage(
10253    const IPCImage& aImage) {
10254  RefPtr<DataSourceSurface> surface = IPCImageToSurface(aImage);
10255  if (!surface) {
10256    return nullptr;
10257  }
10258 
10259  auto drawable = MakeRefPtr<gfxSurfaceDrawable>(surface, surface->GetSize());
10260  nsCOMPtr<imgIContainer> imageContainer =
10261      image::ImageOps::CreateFromDrawable(drawable);
10262  return imageContainer.forget();
10263}
10264 
10265Modifiers nsContentUtils::GetWidgetModifiers(int32_t aModifiers) {
10266  Modifiers result = 0;
10267  if (aModifiers & nsIDOMWindowUtils::MODIFIER_SHIFT) {
10268    result |= mozilla::MODIFIER_SHIFT;
10269  }
10270  if (aModifiers & nsIDOMWindowUtils::MODIFIER_CONTROL) {
10271    result |= mozilla::MODIFIER_CONTROL;
10272  }
10273  if (aModifiers & nsIDOMWindowUtils::MODIFIER_ALT) {
10274    result |= mozilla::MODIFIER_ALT;
10275  }
10276  if (aModifiers & nsIDOMWindowUtils::MODIFIER_META) {
10277    result |= mozilla::MODIFIER_META;
10278  }
10279  if (aModifiers & nsIDOMWindowUtils::MODIFIER_ALTGRAPH) {
10280    result |= mozilla::MODIFIER_ALTGRAPH;
10281  }
10282  if (aModifiers & nsIDOMWindowUtils::MODIFIER_CAPSLOCK) {
10283    result |= mozilla::MODIFIER_CAPSLOCK;
10284  }
10285  if (aModifiers & nsIDOMWindowUtils::MODIFIER_FN) {
10286    result |= mozilla::MODIFIER_FN;
10287  }
10288  if (aModifiers & nsIDOMWindowUtils::MODIFIER_FNLOCK) {
10289    result |= mozilla::MODIFIER_FNLOCK;
10290  }
10291  if (aModifiers & nsIDOMWindowUtils::MODIFIER_NUMLOCK) {
10292    result |= mozilla::MODIFIER_NUMLOCK;
10293  }
10294  if (aModifiers & nsIDOMWindowUtils::MODIFIER_SCROLLLOCK) {
10295    result |= mozilla::MODIFIER_SCROLLLOCK;
10296  }
10297  if (aModifiers & nsIDOMWindowUtils::MODIFIER_SYMBOL) {
10298    result |= mozilla::MODIFIER_SYMBOL;
10299  }
10300  if (aModifiers & nsIDOMWindowUtils::MODIFIER_SYMBOLLOCK) {
10301    result |= mozilla::MODIFIER_SYMBOLLOCK;
10302  }
10303  return result;
10304}
10305 
10306nsIWidget* nsContentUtils::GetWidget(PresShell* aPresShell, nsPoint* aOffset) {
10307  if (!aPresShell) {
10308    return nullptr;
10309  }
10310  nsIFrame* frame = aPresShell->GetRootFrame();
10311  if (!frame) {
10312    return nullptr;
10313  }
10314  return aOffset ? frame->GetNearestWidget(*aOffset)
10315                 : frame->GetNearestWidget();
10316}
10317 
10318int16_t nsContentUtils::GetButtonsFlagForButton(int32_t aButton) {
10319  switch (aButton) {
10320    case -1:
10321      return MouseButtonsFlag::eNoButtons;
10322    case MouseButton::ePrimary:
10323      return MouseButtonsFlag::ePrimaryFlag;
10324    case MouseButton::eMiddle:
10325      return MouseButtonsFlag::eMiddleFlag;
10326    case MouseButton::eSecondary:
10327      return MouseButtonsFlag::eSecondaryFlag;
10328    case 3:
10329      return MouseButtonsFlag::e4thFlag;
10330    case 4:
10331      return MouseButtonsFlag::e5thFlag;
10332    case MouseButton::eEraser:
10333      return MouseButtonsFlag::eEraserFlag;
10334    default:
10335      NS_ERROR("Button not known.")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "Button not known.", "Error"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10335); MOZ_PretendNoReturn
(); } while (0);
10336      return 0;
10337  }
10338}
10339 
10340LayoutDeviceIntPoint nsContentUtils::ToWidgetPoint(
10341    const CSSPoint& aPoint, const nsPoint& aOffset,
10342    nsPresContext* aPresContext) {
10343  nsPoint layoutRelative = CSSPoint::ToAppUnits(aPoint) + aOffset;
10344  nsPoint visualRelative =
10345      ViewportUtils::LayoutToVisual(layoutRelative, aPresContext->PresShell());
10346  return LayoutDeviceIntPoint::FromAppUnitsRounded(
10347      visualRelative, aPresContext->AppUnitsPerDevPixel());
10348}
10349 
10350namespace {
10351 
10352class SynthesizedEventCallback final : public nsISynthesizedEventCallback {
10353  NS_DECL_ISUPPORTSpublic: virtual nsresult QueryInterface(const nsIID& aIID
, void** aInstancePtr) override; virtual MozExternalRefCountType
 AddRef(void) override; virtual MozExternalRefCountType Release
(void) override; using HasThreadSafeRefCnt = std::false_type;
 protected: nsAutoRefCnt mRefCnt; nsAutoOwningThread _mOwningThread
; public:
10354 
10355 public:
10356  explicit SynthesizedEventCallback(VoidFunction& aCallback)
10357      : mCallback(&aCallback) {}
10358 
10359  MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODvirtual nsresult OnCompleteDispatch() override {
10360    MOZ_ASSERT(mCallback, "How can we have a null mCallback here?")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mCallback)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mCallback))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("mCallback" " (" "How can we have a null mCallback here?"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10360
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mCallback" ") (" "How can we have a null mCallback here?"
 ")"); do { MOZ_CrashSequence(__null, 10360); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
10361 
10362    ErrorResult rv;
10363    MOZ_KnownLive(mCallback)(mCallback)->Call(rv);
10364    if (MOZ_UNLIKELY(rv.Failed())(__builtin_expect(!!(rv.Failed()), 0))) {
10365      return rv.StealNSResult();
10366    }
10367 
10368    return NS_OK;
10369  }
10370 
10371 private:
10372  virtual ~SynthesizedEventCallback() = default;
10373 
10374  const RefPtr<VoidFunction> mCallback;
10375};
10376 
10377NS_IMPL_ISUPPORTS(SynthesizedEventCallback, nsISynthesizedEventCallback)MozExternalRefCountType SynthesizedEventCallback::AddRef(void
) { static_assert(!std::is_destructible_v<SynthesizedEventCallback
>, "Reference-counted class " "SynthesizedEventCallback" " should not have a public destructor. "
 "Make this class's destructor non-public"); do { static_assert
( mozilla::detail::AssertionConditionType<decltype(int32_t
(mRefCnt) >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) >= 0))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) >= 0"
 " (" "illegal refcnt" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10377); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0"
 ") (" "illegal refcnt" ")"); do { MOZ_CrashSequence(__null, 10377
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false); do { static_assert( mozilla::detail::AssertionConditionType
<decltype("SynthesizedEventCallback" != nullptr)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!("SynthesizedEventCallback" != nullptr))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("\"SynthesizedEventCallback\" != nullptr"
 " (" "Must specify a name" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10377); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"SynthesizedEventCallback\" != nullptr"
 ") (" "Must specify a name" ")"); do { MOZ_CrashSequence(__null
, 10377); __attribute__((nomerge)) ::abort(); } while (false)
; } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread
.AssertOwnership("SynthesizedEventCallback" " not thread-safe"
); nsrefcnt count = ++mRefCnt; NS_LogAddRef((this), (count), (
"SynthesizedEventCallback"), (uint32_t)(sizeof(*this))); return
 count; } MozExternalRefCountType SynthesizedEventCallback::Release
(void) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(int32_t(mRefCnt) > 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) > 0))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) > 0"
 " (" "dup release" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10377); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0"
 ") (" "dup release" ")"); do { MOZ_CrashSequence(__null, 10377
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false); do { static_assert( mozilla::detail::AssertionConditionType
<decltype("SynthesizedEventCallback" != nullptr)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!("SynthesizedEventCallback" != nullptr))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("\"SynthesizedEventCallback\" != nullptr"
 " (" "Must specify a name" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10377); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"SynthesizedEventCallback\" != nullptr"
 ") (" "Must specify a name" ")"); do { MOZ_CrashSequence(__null
, 10377); __attribute__((nomerge)) ::abort(); } while (false)
; } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread
.AssertOwnership("SynthesizedEventCallback" " not thread-safe"
); const char* const nametmp = "SynthesizedEventCallback"; nsrefcnt
 count = --mRefCnt; NS_LogRelease((this), (count), (nametmp))
; if (count == 0) { mRefCnt = 1; delete (this); return 0; } return
 count; } nsresult SynthesizedEventCallback::QueryInterface(const
 nsIID& aIID, void** aInstancePtr) { do { if (!(aInstancePtr
)) { NS_DebugBreak(NS_DEBUG_ASSERTION, "QueryInterface requires a non-NULL destination!"
, "aInstancePtr", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10377); MOZ_PretendNoReturn(); } } while (0); nsresult rv =
 NS_ERROR_FAILURE; static_assert(1 > 0, "Need more arguments to NS_INTERFACE_TABLE"
); static const QITableEntry table[] = { {&mozilla::detail
::kImplementedIID<SynthesizedEventCallback, nsISynthesizedEventCallback
>, int32_t( reinterpret_cast<char*>(static_cast<nsISynthesizedEventCallback
*>((SynthesizedEventCallback*)0x1000)) - reinterpret_cast<
char*>((SynthesizedEventCallback*)0x1000))}, {&mozilla
::detail::kImplementedIID<SynthesizedEventCallback, nsISupports
>, int32_t(reinterpret_cast<char*>(static_cast<nsISupports
*>( static_cast<nsISynthesizedEventCallback*>((SynthesizedEventCallback
*)0x1000))) - reinterpret_cast<char*>((SynthesizedEventCallback
*)0x1000))}, { nullptr, 0 } } ; static_assert(std::size(table
) > 1, "need at least 1 interface"); rv = NS_TableDrivenQI
(static_cast<void*>(this), aIID, aInstancePtr, table); return
 rv; }
10378 
10379}  // namespace
10380 
10381Result<bool, nsresult> nsContentUtils::SynthesizeMouseEvent(
10382    mozilla::PresShell* aPresShell, nsIWidget* aWidget, const nsAString& aType,
10383    LayoutDeviceIntPoint& aRefPoint,
10384    const SynthesizeMouseEventData& aMouseEventData,
10385    const SynthesizeMouseEventOptions& aOptions,
10386    const Optional<OwningNonNull<VoidFunction>>& aCallback) {
10387  MOZ_ASSERT(aPresShell)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPresShell)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPresShell))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("aPresShell", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10387); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPresShell"
 ")"); do { MOZ_CrashSequence(__null, 10387); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
10388  MOZ_ASSERT(aWidget)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aWidget)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aWidget))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aWidget", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10388); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aWidget" ")"
); do { MOZ_CrashSequence(__null, 10388); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
10389  AUTO_PROFILER_LABEL("nsContentUtils::SynthesizeMouseEvent", OTHER)mozilla::AutoProfilerLabel raiiObject10389( "nsContentUtils::SynthesizeMouseEvent"
, nullptr, JS::ProfilingCategoryPair::OTHER);
10390 
10391  if (aCallback.WasPassed()) {
10392    if (!XRE_IsParentProcess()) {
10393      // TODO(edgar): There is currently no real use case for synthesizing a
10394      // mouse event with a callback from the content process. For now, throw an
10395      // error in this case. We can add support later if a valid use case
10396      // arises.
10397      NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeMouseEvent() does not support being "
 "called in the content process with a callback", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10399)
10398          "nsContentUtils::SynthesizeMouseEvent() does not support being "NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeMouseEvent() does not support being "
 "called in the content process with a callback", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10399)
10399          "called in the content process with a callback")NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeMouseEvent() does not support being "
 "called in the content process with a callback", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10399);
10400      return Err(NS_ERROR_FAILURE);
10401    }
10402 
10403    if (!aOptions.mIsDOMEventSynthesized) {
10404      // TODO(edgar): There is currently no real use case for synthesizing a
10405      // mouse event with a callback that could be coalesced. For now, throw an
10406      // error. We can add support later if a need arises.
10407      NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeMouseEvent() does not support being "
 "called in the parent process with isDOMEventSynthesized=false, due "
 "to the callback doesn't not support on coalesced events", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10410)
10408          "nsContentUtils::SynthesizeMouseEvent() does not support being "NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeMouseEvent() does not support being "
 "called in the parent process with isDOMEventSynthesized=false, due "
 "to the callback doesn't not support on coalesced events", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10410)
10409          "called in the parent process with isDOMEventSynthesized=false, due "NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeMouseEvent() does not support being "
 "called in the parent process with isDOMEventSynthesized=false, due "
 "to the callback doesn't not support on coalesced events", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10410)
10410          "to the callback doesn't not support on coalesced events")NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeMouseEvent() does not support being "
 "called in the parent process with isDOMEventSynthesized=false, due "
 "to the callback doesn't not support on coalesced events", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10410);
10411      return Err(NS_ERROR_FAILURE);
10412    }
10413  }
10414 
10415  EventMessage msg;
10416  Maybe<WidgetMouseEvent::ExitFrom> exitFrom;
10417  bool contextMenuKey = false;
10418  if (aType.EqualsLiteral("mousedown")) {
10419    msg = eMouseDown;
10420  } else if (aType.EqualsLiteral("mouseup")) {
10421    msg = eMouseUp;
10422  } else if (aType.EqualsLiteral("mousemove")) {
10423    msg = eMouseMove;
10424  } else if (aType.EqualsLiteral("mouseover")) {
10425    msg = eMouseEnterIntoWidget;
10426  } else if (aType.EqualsLiteral("mouseout")) {
10427    msg = eMouseExitFromWidget;
10428    exitFrom = Some(WidgetMouseEvent::ePlatformChild);
10429  } else if (aType.EqualsLiteral("mousecancel")) {
10430    msg = eMouseExitFromWidget;
10431    exitFrom = Some(XRE_IsParentProcess() ? WidgetMouseEvent::ePlatformTopLevel
10432                                          : WidgetMouseEvent::ePuppet);
10433  } else if (aType.EqualsLiteral("mouselongtap")) {
10434    msg = eMouseLongTap;
10435  } else if (aType.EqualsLiteral("contextmenu")) {
10436    msg = eContextMenu;
10437    contextMenuKey =
10438        !aMouseEventData.mButton &&
10439        aMouseEventData.mInputSource != MouseEvent_Binding::MOZ_SOURCE_TOUCH;
10440  } else if (aType.EqualsLiteral("MozMouseHittest")) {
10441    msg = eMouseHitTest;
10442  } else if (aType.EqualsLiteral("MozMouseExploreByTouch")) {
10443    msg = eMouseExploreByTouch;
10444  } else {
10445    return Err(NS_ERROR_FAILURE);
10446  }
10447 
10448  Maybe<WidgetPointerEvent> pointerEvent;
10449  Maybe<WidgetMouseEvent> mouseEvent;
10450  if (IsPointerEventMessage(msg)) {
10451    if (MOZ_UNLIKELY(aOptions.mIsWidgetEventSynthesized)(__builtin_expect(!!(aOptions.mIsWidgetEventSynthesized), 0))) {
10452      MOZ_ASSERT_UNREACHABLE(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "The event shouldn't be dispatched as a synthesized event" ")"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10453); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "The event shouldn't be dispatched as a synthesized event"
 ")"); do { MOZ_CrashSequence(__null, 10453); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false)
10453          "The event shouldn't be dispatched as a synthesized event")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "The event shouldn't be dispatched as a synthesized event" ")"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10453); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "The event shouldn't be dispatched as a synthesized event"
 ")"); do { MOZ_CrashSequence(__null, 10453); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
10454      // `click`, `auxclick` nor `contextmenu` should not be dispatched as a
10455      // synthesized event.
10456      return Err(NS_ERROR_INVALID_ARG);
10457    }
10458    pointerEvent.emplace(true, msg, aWidget,
10459                         contextMenuKey ? WidgetMouseEvent::eContextMenuKey
10460                                        : WidgetMouseEvent::eNormal);
10461  } else {
10462    mouseEvent.emplace(true, msg, aWidget,
10463                       aOptions.mIsWidgetEventSynthesized
10464                           ? WidgetMouseEvent::eSynthesized
10465                           : WidgetMouseEvent::eReal,
10466                       contextMenuKey ? WidgetMouseEvent::eContextMenuKey
10467                                      : WidgetMouseEvent::eNormal);
10468  }
10469 
10470  nsCOMPtr<nsISynthesizedEventCallback> callback;
10471  if (aCallback.WasPassed()) {
10472    callback = MakeAndAddRef<SynthesizedEventCallback>(aCallback.Value());
10473  }
10474 
10475  mozilla::widget::AutoSynthesizedEventCallbackNotifier notifier(callback);
10476 
10477  WidgetMouseEvent& mouseOrPointerEvent =
10478      pointerEvent.isSome() ? pointerEvent.ref() : mouseEvent.ref();
10479  mouseOrPointerEvent.pointerId = aMouseEventData.mIdentifier;
10480  mouseOrPointerEvent.mModifiers =
10481      GetWidgetModifiers(aMouseEventData.mModifiers);
10482  mouseOrPointerEvent.mButton = aMouseEventData.mButton;
10483  mouseOrPointerEvent.mButtons =
10484      aMouseEventData.mButtons.WasPassed()
10485          ? aMouseEventData.mButtons.Value()
10486          : (msg != eMouseDown
10487                 ? 0
10488                 : GetButtonsFlagForButton(aMouseEventData.mButton));
10489  // https://w3c.github.io/pointerevents/#dom-pointerevent-pressure.
10490  mouseOrPointerEvent.mPressure =
10491      aMouseEventData.mPressure.WasPassed()
10492          ? aMouseEventData.mPressure.Value()
10493          : ((mouseOrPointerEvent.mButtons == 0) ? 0.0f : 0.5f);
10494  mouseOrPointerEvent.mInputSource = aMouseEventData.mInputSource;
10495  mouseOrPointerEvent.mClickCount =
10496      aMouseEventData.mClickCount.WasPassed()
10497          ? aMouseEventData.mClickCount.Value()
10498          : ((msg == eMouseDown || msg == eMouseUp) ? 1 : 0);
10499  mouseOrPointerEvent.mFlags.mIsSynthesizedForTests =
10500      aOptions.mIsDOMEventSynthesized;
10501  mouseOrPointerEvent.mExitFrom = std::move(exitFrom);
10502  mouseOrPointerEvent.mCallbackId = notifier.SaveCallback();
10503 
10504  nsPresContext* presContext = aPresShell->GetPresContext();
10505  if (!presContext) {
10506    return Err(NS_ERROR_FAILURE);
10507  }
10508 
10509  mouseOrPointerEvent.mRefPoint = aRefPoint;
10510  mouseOrPointerEvent.mIgnoreRootScrollFrame = aOptions.mIgnoreRootScrollFrame;
10511 
10512  nsEventStatus status = nsEventStatus_eIgnore;
10513  if (aOptions.mToWindow) {
10514    nsresult rv = aPresShell->HandleEvent(aPresShell->GetRootFrame(),
10515                                          &mouseOrPointerEvent, false, &status);
10516    if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
10517      return Err(rv);
10518    }
10519  } else if (aOptions.mIsAsyncEnabled ||
10520             StaticPrefs::test_events_async_enabled()) {
10521    // The event is dispatched asynchronously via WebDriver when it is not
10522    // targeted directly at a window and async dispatching is requested.
10523    mouseOrPointerEvent.mFlags.mIsAsyncSynthesizedForTests =
10524        aOptions.mIsDOMEventSynthesized;
10525    status = aWidget->DispatchInputEvent(&mouseOrPointerEvent).mContentStatus;
10526  } else {
10527    status = aWidget->DispatchEvent(&mouseOrPointerEvent);
10528  }
10529 
10530  // The callback ID may be cleared when the event also needs to be dispatched
10531  // to a content process. In such cases, the callback will be notified after
10532  // the event has been dispatched in the target content process.
10533  if (mouseOrPointerEvent.mCallbackId.isSome()) {
10534    mozilla::widget::AutoSynthesizedEventCallbackNotifier::NotifySavedCallback(
10535        mouseOrPointerEvent.mCallbackId.ref());
10536  }
10537 
10538  return status == nsEventStatus_eConsumeNoDefault;
10539}
10540 
10541mozilla::Result<bool, nsresult> nsContentUtils::SynthesizeTouchEvent(
10542    nsPresContext* aPresContext, nsIWidget* aWidget,
10543    const nsPoint& aWidgetOffset, const nsAString& aType,
10544    const nsTArray<SynthesizeTouchEventData>& aTouches,
10545    const int32_t aModifiers, const SynthesizeTouchEventOptions& aOptions,
10546    const Optional<OwningNonNull<VoidFunction>>& aCallback) {
10547  MOZ_ASSERT(aPresContext)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPresContext)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPresContext))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("aPresContext", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10547); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPresContext"
 ")"); do { MOZ_CrashSequence(__null, 10547); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
10548  MOZ_ASSERT(aWidget)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aWidget)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aWidget))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aWidget", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10548); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aWidget" ")"
); do { MOZ_CrashSequence(__null, 10548); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
10549  AUTO_PROFILER_LABEL("nsContentUtils::SynthesizeTouchEvent", OTHER)mozilla::AutoProfilerLabel raiiObject10549( "nsContentUtils::SynthesizeTouchEvent"
, nullptr, JS::ProfilingCategoryPair::OTHER);
10550 
10551  if (aCallback.WasPassed()) {
10552    if (!XRE_IsParentProcess()) {
10553      // TODO(edgar): There is currently no real use case for synthesizing a
10554      // touch event with a callback from the content process. For now, throw an
10555      // error in this case. We can add support later if a valid use case
10556      // arises.
10557      NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the content process with a callback", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10559)
10558          "nsContentUtils::SynthesizeTouchEvent() does not support being "NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the content process with a callback", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10559)
10559          "called in the content process with a callback")NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the content process with a callback", nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10559);
10560      return Err(NS_ERROR_FAILURE);
10561    }
10562 
10563    if (!aOptions.mIsDOMEventSynthesized) {
10564      // TODO(edgar): There is currently no real use case for synthesizing a
10565      // touch event with a callback that could be coalesced. For now, throw an
10566      // error. We can add support later if a need arises.
10567      NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the parent process with isDOMEventSynthesized=false, due "
 "to the callback doesn't not support on coalesced events", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10570)
10568          "nsContentUtils::SynthesizeTouchEvent() does not support being "NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the parent process with isDOMEventSynthesized=false, due "
 "to the callback doesn't not support on coalesced events", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10570)
10569          "called in the parent process with isDOMEventSynthesized=false, due "NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the parent process with isDOMEventSynthesized=false, due "
 "to the callback doesn't not support on coalesced events", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10570)
10570          "to the callback doesn't not support on coalesced events")NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the parent process with isDOMEventSynthesized=false, due "
 "to the callback doesn't not support on coalesced events", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10570);
10571      return Err(NS_ERROR_FAILURE);
10572    }
10573  }
10574 
10575  if (XRE_IsParentProcess() && !aOptions.mIsAsyncEnabled &&
10576      !StaticPrefs::test_events_async_enabled()) {
10577    // TODO(edgar): Currently, dispatching touch event from parent process
10578    // without going through APZ would cause content process crash on debug
10579    // build.
10580    NS_WARNING(NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the parent process without going through APZ", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10582)
10581        "nsContentUtils::SynthesizeTouchEvent() does not support being "NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the parent process without going through APZ", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10582)
10582        "called in the parent process without going through APZ")NS_DebugBreak(NS_DEBUG_WARNING, "nsContentUtils::SynthesizeTouchEvent() does not support being "
 "called in the parent process without going through APZ", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10582);
10583    return Err(NS_ERROR_FAILURE);
10584  }
10585 
10586  EventMessage msg;
10587  if (aType.EqualsLiteral("touchstart")) {
10588    msg = eTouchStart;
10589  } else if (aType.EqualsLiteral("touchmove")) {
10590    msg = eTouchMove;
10591  } else if (aType.EqualsLiteral("touchend")) {
10592    msg = eTouchEnd;
10593  } else if (aType.EqualsLiteral("touchcancel")) {
10594    msg = eTouchCancel;
10595  } else {
10596    return Err(NS_ERROR_UNEXPECTED);
10597  }
10598 
10599  nsCOMPtr<nsISynthesizedEventCallback> callback;
10600  if (aCallback.WasPassed()) {
10601    callback = MakeAndAddRef<SynthesizedEventCallback>(aCallback.Value());
10602  }
10603 
10604  mozilla::widget::AutoSynthesizedEventCallbackNotifier notifier(callback);
10605 
10606  WidgetTouchEvent event(true, msg, aWidget);
10607  event.mFlags.mIsSynthesizedForTests = aOptions.mIsDOMEventSynthesized;
10608  event.mModifiers = nsContentUtils::GetWidgetModifiers(aModifiers);
10609  if (aOptions.mIsPen) {
10610    event.mInputSource = MouseEvent_Binding::MOZ_SOURCE_PEN;
10611  }
10612  event.mCallbackId = notifier.SaveCallback();
10613 
10614  uint32_t count = aTouches.Length();
10615  event.mTouches.SetCapacity(count);
10616  for (uint32_t i = 0; i < count; ++i) {
10617    if (aTouches[i].mAltitudeAngle.WasPassed() !=
10618        aTouches[i].mAzimuthAngle.WasPassed()) {
10619      return Err(NS_ERROR_INVALID_ARG);
10620    }
10621 
10622    LayoutDeviceIntPoint pt = nsContentUtils::ToWidgetPoint(
10623        CSSPoint(aTouches[i].mOffsetX, aTouches[i].mOffsetY), aWidgetOffset,
10624        aPresContext);
10625    LayoutDeviceIntPoint radius = LayoutDeviceIntPoint::FromAppUnitsRounded(
10626        CSSPoint::ToAppUnits(
10627            CSSPoint(aTouches[i].mRadiiX, aTouches[i].mRadiiY)),
10628        aPresContext->AppUnitsPerDevPixel());
10629    // https://w3c.github.io/pointerevents/#dom-pointerevent-pressure.
10630    float pressure = aTouches[i].mPressure.WasPassed()
10631                         ? aTouches[i].mPressure.Value()
10632                         : (msg == eTouchEnd ? 0.0f : 0.5f);
10633 
10634    RefPtr<Touch> t =
10635        new Touch(CheckedInt<int32_t>(aTouches[i].mIdentifier).value(), pt,
10636                  radius, aTouches[i].mRotationAngle, pressure);
10637    if (aTouches[i].mAltitudeAngle.WasPassed()) {
10638      MOZ_ASSERT(aTouches[i].mAzimuthAngle.WasPassed())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aTouches[i].mAzimuthAngle.WasPassed())>::isValid,
 "invalid assertion condition"); if ((__builtin_expect(!!(!(!
!(aTouches[i].mAzimuthAngle.WasPassed()))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aTouches[i].mAzimuthAngle.WasPassed()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10638); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aTouches[i].mAzimuthAngle.WasPassed()" ")"
); do { MOZ_CrashSequence(__null, 10638); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
10639      t->mAngle.emplace(aTouches[i].mAltitudeAngle.Value(),
10640                        aTouches[i].mAzimuthAngle.Value());
10641    } else {
10642      t->mTilt.emplace(aTouches[i].mTiltX, aTouches[i].mTiltY);
10643    }
10644    t->twist = aTouches[i].mTwist;
10645    event.mTouches.AppendElement(t);
10646  }
10647 
10648  nsEventStatus status = nsEventStatus_eIgnore;
10649  if (aOptions.mToWindow) {
10650    RefPtr<PresShell> presShell = aPresContext->PresShell();
10651    MOZ_TRY(presShell->HandleEvent(presShell->GetRootFrame(), &event, false,__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult
(presShell->HandleEvent(presShell->GetRootFrame(), &
event, false, &status)); if ((__builtin_expect(!!(mozTryVarTempResult
.isErr()), 0))) { return mozTryVarTempResult.propagateErr(); }
 mozTryVarTempResult.unwrap(); })
10652                                   &status))__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult
(presShell->HandleEvent(presShell->GetRootFrame(), &
event, false, &status)); if ((__builtin_expect(!!(mozTryVarTempResult
.isErr()), 0))) { return mozTryVarTempResult.propagateErr(); }
 mozTryVarTempResult.unwrap(); });
10653  } else if (aOptions.mIsAsyncEnabled ||
10654             StaticPrefs::test_events_async_enabled()) {
10655    status = aWidget->DispatchInputEvent(&event).mContentStatus;
10656  } else {
10657    status = aWidget->DispatchEvent(&event);
10658  }
10659 
10660  // The callback ID may be cleared when the event also needs to be dispatched
10661  // to a content process. In such cases, the callback will be notified after
10662  // the event has been dispatched in the target content process.
10663  if (event.mCallbackId.isSome()) {
10664    mozilla::widget::AutoSynthesizedEventCallbackNotifier::NotifySavedCallback(
10665        event.mCallbackId.ref());
10666  }
10667 
10668  return status == nsEventStatus_eConsumeNoDefault;
10669}
10670 
10671/* static */
10672void nsContentUtils::FirePageHideEventForFrameLoaderSwap(
10673    nsIDocShellTreeItem* aItem, EventTarget* aChromeEventHandler,
10674    bool aOnlySystemGroup) {
10675  MOZ_DIAGNOSTIC_ASSERT(aItem)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aItem)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(aItem))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("aItem", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10675); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "aItem"
 ")"); do { MOZ_CrashSequence(__null, 10675); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
10676  MOZ_DIAGNOSTIC_ASSERT(aChromeEventHandler)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aChromeEventHandler)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aChromeEventHandler))), 0)))
 { do { } while (false); MOZ_ReportAssertionFailure("aChromeEventHandler"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10676); AnnotateMozCrashReason
("MOZ_DIAGNOSTIC_ASSERT" "(" "aChromeEventHandler" ")"); do {
 MOZ_CrashSequence(__null, 10676); __attribute__((nomerge)) ::
abort(); } while (false); } } while (false);
10677 
10678  if (RefPtr<Document> doc = aItem->GetDocument()) {
10679    doc->OnPageHide(true, aChromeEventHandler, aOnlySystemGroup);
10680  }
10681 
10682  int32_t childCount = 0;
10683  aItem->GetInProcessChildCount(&childCount);
10684  AutoTArray<nsCOMPtr<nsIDocShellTreeItem>, 8> kids;
10685  kids.AppendElements(childCount);
10686  for (int32_t i = 0; i < childCount; ++i) {
10687    aItem->GetInProcessChildAt(i, getter_AddRefs(kids[i]));
10688  }
10689 
10690  for (uint32_t i = 0; i < kids.Length(); ++i) {
10691    if (kids[i]) {
10692      FirePageHideEventForFrameLoaderSwap(
10693          MOZ_KnownLive(kids[i])(kids[i]), aChromeEventHandler, aOnlySystemGroup);
10694    }
10695  }
10696}
10697 
10698// The pageshow event is fired for a given document only if IsShowing()
10699// returns the same thing as aFireIfShowing.  This gives us a way to fire
10700// pageshow only on documents that are still loading or only on documents that
10701// are already loaded.
10702/* static */
10703void nsContentUtils::FirePageShowEventForFrameLoaderSwap(
10704    nsIDocShellTreeItem* aItem, EventTarget* aChromeEventHandler,
10705    bool aFireIfShowing, bool aOnlySystemGroup) {
10706  int32_t childCount = 0;
10707  aItem->GetInProcessChildCount(&childCount);
10708  AutoTArray<nsCOMPtr<nsIDocShellTreeItem>, 8> kids;
10709  kids.AppendElements(childCount);
10710  for (int32_t i = 0; i < childCount; ++i) {
10711    aItem->GetInProcessChildAt(i, getter_AddRefs(kids[i]));
10712  }
10713 
10714  for (uint32_t i = 0; i < kids.Length(); ++i) {
10715    if (kids[i]) {
10716      FirePageShowEventForFrameLoaderSwap(MOZ_KnownLive(kids[i])(kids[i]),
10717                                          aChromeEventHandler, aFireIfShowing,
10718                                          aOnlySystemGroup);
10719    }
10720  }
10721 
10722  RefPtr<Document> doc = aItem->GetDocument();
10723  if (doc && doc->IsShowing() == aFireIfShowing) {
10724    doc->OnPageShow(true, aChromeEventHandler, aOnlySystemGroup);
10725  }
10726}
10727 
10728/* static */
10729already_AddRefed<nsPIWindowRoot> nsContentUtils::GetWindowRoot(Document* aDoc) {
10730  if (aDoc) {
10731    if (nsPIDOMWindowOuter* win = aDoc->GetWindow()) {
10732      return win->GetTopWindowRoot();
10733    }
10734  }
10735  return nullptr;
10736}
10737 
10738/* static */
10739bool nsContentUtils::LinkContextIsURI(const nsAString& aAnchor,
10740                                      nsIURI* aDocURI) {
10741  if (aAnchor.IsEmpty()) {
10742    // anchor parameter not present or empty -> same document reference
10743    return true;
10744  }
10745 
10746  // the document URI might contain a fragment identifier ("#...')
10747  // we want to ignore that because it's invisible to the server
10748  // and just affects the local interpretation in the recipient
10749  nsCOMPtr<nsIURI> contextUri;
10750  nsresult rv = NS_GetURIWithoutRef(aDocURI, getter_AddRefs(contextUri));
10751 
10752  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
10753    // copying failed
10754    return false;
10755  }
10756 
10757  // resolve anchor against context
10758  nsCOMPtr<nsIURI> resolvedUri;
10759  rv = NS_NewURI(getter_AddRefs(resolvedUri), aAnchor, nullptr, contextUri);
10760 
10761  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
10762    // resolving failed
10763    return false;
10764  }
10765 
10766  bool same;
10767  rv = contextUri->Equals(resolvedUri, &same);
10768  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
10769    // comparison failed
10770    return false;
10771  }
10772 
10773  return same;
10774}
10775 
10776/* static */
10777bool nsContentUtils::IsPreloadType(nsContentPolicyType aType) {
10778  return (aType == nsIContentPolicy::TYPE_INTERNAL_SCRIPT_PRELOAD ||
10779          aType == nsIContentPolicy::TYPE_INTERNAL_MODULE_PRELOAD ||
10780          aType == nsIContentPolicy::TYPE_INTERNAL_IMAGE_PRELOAD ||
10781          aType == nsIContentPolicy::TYPE_INTERNAL_STYLESHEET_PRELOAD ||
10782          aType == nsIContentPolicy::TYPE_INTERNAL_FONT_PRELOAD ||
10783          aType == nsIContentPolicy::TYPE_INTERNAL_JSON_PRELOAD ||
10784          aType == nsIContentPolicy::TYPE_INTERNAL_TEXT_PRELOAD ||
10785          aType == nsIContentPolicy::TYPE_INTERNAL_FETCH_PRELOAD);
10786}
10787 
10788// static
10789bool nsContentUtils::IsImageType(ExtContentPolicy aType) {
10790  return aType == ExtContentPolicy::TYPE_IMAGE ||
10791         aType == ExtContentPolicy::TYPE_IMAGESET;
10792}
10793 
10794// static
10795ReferrerPolicy nsContentUtils::GetReferrerPolicyFromChannel(
10796    nsIChannel* aChannel) {
10797  nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel);
10798  if (!httpChannel) {
10799    return ReferrerPolicy::_empty;
10800  }
10801 
10802  nsresult rv;
10803  nsAutoCString headerValue;
10804  rv = httpChannel->GetResponseHeader("referrer-policy"_ns, headerValue);
10805  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0))) || headerValue.IsEmpty()) {
10806    return ReferrerPolicy::_empty;
10807  }
10808 
10809  return ReferrerInfo::ReferrerPolicyFromHeaderString(
10810      NS_ConvertUTF8toUTF16(headerValue));
10811}
10812 
10813// static
10814bool nsContentUtils::HasRelNoReferrer(const Element& aElement) {
10815  // rel=noreferrer is only supported in <a>, <area>, and <form>
10816  if (!aElement.IsAnyOfHTMLElements(nsGkAtoms::a, nsGkAtoms::area,
10817                                    nsGkAtoms::form) &&
10818      !aElement.IsSVGElement(nsGkAtoms::a)) {
10819    return false;
10820  }
10821 
10822  nsAutoString rel;
10823  aElement.GetAttr(nsGkAtoms::rel, rel);
10824  nsWhitespaceTokenizerTemplate<nsContentUtils::IsHTMLWhitespace> tok(rel);
10825 
10826  while (tok.hasMoreTokens()) {
10827    const nsAString& token = tok.nextToken();
10828    if (token.LowerCaseEqualsLiteral("noreferrer")) {
10829      return true;
10830    }
10831  }
10832 
10833  return false;
10834}
10835 
10836// static
10837bool nsContentUtils::IsNonSubresourceRequest(nsIChannel* aChannel) {
10838  nsLoadFlags loadFlags = 0;
10839  aChannel->GetLoadFlags(&loadFlags);
10840  if (loadFlags & nsIChannel::LOAD_DOCUMENT_URI) {
10841    return true;
10842  }
10843 
10844  nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
10845  nsContentPolicyType type = loadInfo->InternalContentPolicyType();
10846  return IsNonSubresourceInternalPolicyType(type);
10847}
10848 
10849// static
10850bool nsContentUtils::IsNonSubresourceInternalPolicyType(
10851    nsContentPolicyType aType) {
10852  return aType == nsIContentPolicy::TYPE_DOCUMENT ||
10853         aType == nsIContentPolicy::TYPE_INTERNAL_IFRAME ||
10854         aType == nsIContentPolicy::TYPE_INTERNAL_FRAME ||
10855         aType == nsIContentPolicy::TYPE_INTERNAL_WORKER ||
10856         aType == nsIContentPolicy::TYPE_INTERNAL_SHARED_WORKER;
10857}
10858 
10859// static public
10860bool nsContentUtils::IsThirdPartyTrackingResourceWindow(
10861    nsPIDOMWindowInner* aWindow) {
10862  MOZ_ASSERT(aWindow)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aWindow)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aWindow))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aWindow", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10862); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aWindow" ")"
); do { MOZ_CrashSequence(__null, 10862); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
10863 
10864  Document* document = aWindow->GetExtantDoc();
10865  if (!document) {
10866    return false;
10867  }
10868 
10869  nsCOMPtr<nsIClassifiedChannel> classifiedChannel =
10870      do_QueryInterface(document->GetChannel());
10871  if (!classifiedChannel) {
10872    return false;
10873  }
10874 
10875  return classifiedChannel->IsThirdPartyTrackingResource();
10876}
10877 
10878// static public
10879bool nsContentUtils::IsFirstPartyTrackingResourceWindow(
10880    nsPIDOMWindowInner* aWindow) {
10881  MOZ_ASSERT(aWindow)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aWindow)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aWindow))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aWindow", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 10881); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aWindow" ")"
); do { MOZ_CrashSequence(__null, 10881); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
10882 
10883  Document* document = aWindow->GetExtantDoc();
10884  if (!document) {
10885    return false;
10886  }
10887 
10888  nsCOMPtr<nsIClassifiedChannel> classifiedChannel =
10889      do_QueryInterface(document->GetChannel());
10890  if (!classifiedChannel) {
10891    return false;
10892  }
10893 
10894  uint32_t classificationFlags =
10895      classifiedChannel->GetFirstPartyClassificationFlags();
10896 
10897  return mozilla::net::ChannelClassifierUtils::IsTrackingClassificationFlag(
10898      classificationFlags, NS_UsePrivateBrowsing(document->GetChannel()));
10899}
10900 
10901namespace {
10902 
10903// We put StringBuilder in the anonymous namespace to prevent anything outside
10904// this file from accidentally being linked against it.
10905class BulkAppender {
10906  using size_type = typename nsAString::size_type;
10907 
10908 public:
10909  explicit BulkAppender(BulkWriteHandle<char16_t>&& aHandle)
10910      : mHandle(std::move(aHandle)), mPosition(0) {}
10911  ~BulkAppender() = default;
10912 
10913  template <int N>
10914  void AppendLiteral(const char16_t (&aStr)[N]) {
10915    size_t len = N - 1;
10916    MOZ_ASSERT(mPosition + len <= mHandle.Length())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mPosition + len <= mHandle.Length())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(mPosition + len <= mHandle.Length()))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("mPosition + len <= mHandle.Length()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10916); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mPosition + len <= mHandle.Length()" ")"
); do { MOZ_CrashSequence(__null, 10916); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
10917    memcpy(mHandle.Elements() + mPosition, aStr, len * sizeof(char16_t));
10918    mPosition += len;
10919  }
10920 
10921  void Append(Span<const char16_t> aStr) {
10922    size_t len = aStr.Length();
10923    MOZ_ASSERT(mPosition + len <= mHandle.Length())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mPosition + len <= mHandle.Length())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(mPosition + len <= mHandle.Length()))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("mPosition + len <= mHandle.Length()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10923); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mPosition + len <= mHandle.Length()" ")"
); do { MOZ_CrashSequence(__null, 10923); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
10924    // Both mHandle.Elements() and aStr.Elements() are guaranteed
10925    // to be non-null (by the string implementation and by Span,
10926    // respectively), so not checking the pointers for null before
10927    // memcpy does not lead to UB even if len was zero.
10928    memcpy(mHandle.Elements() + mPosition, aStr.Elements(),
10929           len * sizeof(char16_t));
10930    mPosition += len;
10931  }
10932 
10933  void Append(Span<const char> aStr) {
10934    size_t len = aStr.Length();
10935    MOZ_ASSERT(mPosition + len <= mHandle.Length())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mPosition + len <= mHandle.Length())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(mPosition + len <= mHandle.Length()))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("mPosition + len <= mHandle.Length()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 10935); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mPosition + len <= mHandle.Length()" ")"
); do { MOZ_CrashSequence(__null, 10935); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
10936    ConvertLatin1toUtf16(aStr, mHandle.AsSpan().From(mPosition));
10937    mPosition += len;
10938  }
10939 
10940  void Finish() { mHandle.Finish(mPosition, false); }
10941 
10942 private:
10943  BulkWriteHandle<char16_t> mHandle;
10944  size_type mPosition;
10945};
10946 
10947class StringBuilderSIMD {
10948 public:
10949  static const bool SIMD = true;
10950};
10951 
10952class StringBuilderALU {
10953 public:
10954  static const bool SIMD = false;
10955};
10956 
10957class StringBuilder {
10958 private:
10959  class Unit {
10960   public:
10961    Unit() : mAtom(nullptr) { MOZ_COUNT_CTOR(StringBuilder::Unit)do { static_assert(std::is_class_v<StringBuilder::Unit>
, "Token '" "StringBuilder::Unit" "' is not a class type."); static_assert
(!std::is_base_of_v<nsISupports, StringBuilder::Unit>, "nsISupports classes don't need to call MOZ_COUNT_CTOR or "
 "MOZ_COUNT_DTOR");; NS_LogCtor((void*)this, "StringBuilder::Unit"
, sizeof(*this)); } while (0); }
10962    ~Unit() {
10963      if (mType == Type::String || mType == Type::StringWithEncode) {
10964        mString.~nsString();
10965      }
10966      MOZ_COUNT_DTOR(StringBuilder::Unit)do { static_assert(std::is_class_v<StringBuilder::Unit>
, "Token '" "StringBuilder::Unit" "' is not a class type."); static_assert
(!std::is_base_of_v<nsISupports, StringBuilder::Unit>, "nsISupports classes don't need to call MOZ_COUNT_CTOR or "
 "MOZ_COUNT_DTOR");; NS_LogDtor((void*)this, "StringBuilder::Unit"
, sizeof(*this)); } while (0);
10967    }
10968 
10969    enum class Type : uint8_t {
10970      Unknown,
10971      Atom,
10972      String,
10973      StringWithEncode,
10974      Literal,
10975      TextFragment,
10976      TextFragmentWithEncode,
10977    };
10978 
10979    struct LiteralSpan {
10980      const char16_t* mData;
10981      uint32_t mLength;
10982 
10983      Span<const char16_t> AsSpan() { return Span(mData, mLength); }
10984    };
10985 
10986    union {
10987      nsAtom* mAtom;
10988      LiteralSpan mLiteral;
10989      nsString mString;
10990      const CharacterDataBuffer* mCharacterDataBuffer;
10991    };
10992    Type mType = Type::Unknown;
10993  };
10994 
10995  static_assert(sizeof(void*) != 8 || sizeof(Unit) <= 3 * sizeof(void*),
10996                "Unit should remain small");
10997 
10998 public:
10999  // Try to keep the size of StringBuilder close to a jemalloc bucket size
11000  // (the 16kb one in this case).
11001  static constexpr uint32_t TARGET_SIZE = 16 * 1024;
11002 
11003  // The number of units we need to remove from the inline buffer so that the
11004  // rest of the builder members fit. A more precise approach would be to
11005  // calculate that extra size and use (TARGET_SIZE - OTHER_SIZE) /
11006  // sizeof(Unit) or so, but this is simpler.
11007  static constexpr uint32_t PADDING_UNITS = sizeof(void*) == 8 ? 1 : 2;
11008 
11009  static constexpr uint32_t STRING_BUFFER_UNITS =
11010      TARGET_SIZE / sizeof(Unit) - PADDING_UNITS;
11011 
11012  StringBuilder() : mLast(this), mLength(0) { MOZ_COUNT_CTOR(StringBuilder)do { static_assert(std::is_class_v<StringBuilder>, "Token '"
 "StringBuilder" "' is not a class type."); static_assert(!std
::is_base_of_v<nsISupports, StringBuilder>, "nsISupports classes don't need to call MOZ_COUNT_CTOR or "
 "MOZ_COUNT_DTOR");; NS_LogCtor((void*)this, "StringBuilder",
 sizeof(*this)); } while (0); }
11013 
11014  MOZ_COUNTED_DTOR(StringBuilder)~StringBuilder() { do { static_assert(std::is_class_v<StringBuilder
>, "Token '" "StringBuilder" "' is not a class type."); static_assert
(!std::is_base_of_v<nsISupports, StringBuilder>, "nsISupports classes don't need to call MOZ_COUNT_CTOR or "
 "MOZ_COUNT_DTOR");; NS_LogDtor((void*)this, "StringBuilder",
 sizeof(*this)); } while (0); }
11015 
11016  void Append(nsAtom* aAtom) {
11017    Unit* u = AddUnit();
11018    u->mAtom = aAtom;
11019    u->mType = Unit::Type::Atom;
11020    uint32_t len = aAtom->GetLength();
11021    mLength += len;
11022  }
11023 
11024  template <int N>
11025  void Append(const char16_t (&aLiteral)[N]) {
11026    constexpr uint32_t len = N - 1;
11027    Unit* u = AddUnit();
11028    u->mLiteral = {aLiteral, len};
11029    u->mType = Unit::Type::Literal;
11030    mLength += len;
11031  }
11032 
11033  void Append(nsString&& aString) {
11034    Unit* u = AddUnit();
11035    uint32_t len = aString.Length();
11036    new (&u->mString) nsString(std::move(aString));
11037    u->mType = Unit::Type::String;
11038    mLength += len;
11039  }
11040 
11041  // aLen can be !isValid(), which will get propagated into mLength.
11042  void AppendWithAttrEncode(nsString&& aString, CheckedInt<uint32_t> aLen) {
11043    Unit* u = AddUnit();
11044    new (&u->mString) nsString(std::move(aString));
11045    u->mType = Unit::Type::StringWithEncode;
11046    mLength += aLen;
11047  }
11048 
11049  void Append(const CharacterDataBuffer* aCharacterDataBuffer) {
11050    Unit* u = AddUnit();
11051    u->mCharacterDataBuffer = aCharacterDataBuffer;
11052    u->mType = Unit::Type::TextFragment;
11053    uint32_t len = aCharacterDataBuffer->GetLength();
11054    mLength += len;
11055  }
11056 
11057  // aLen can be !isValid(), which will get propagated into mLength.
11058  void AppendWithEncode(const CharacterDataBuffer* aCharacterDataBuffer,
11059                        CheckedInt<uint32_t> aLen) {
11060    Unit* u = AddUnit();
11061    u->mCharacterDataBuffer = aCharacterDataBuffer;
11062    u->mType = Unit::Type::TextFragmentWithEncode;
11063    mLength += aLen;
11064  }
11065 
11066  bool ToString(nsAString& aOut) {
11067    if (!mLength.isValid()) {
11068      return false;
11069    }
11070    auto appenderOrErr = aOut.BulkWrite(mLength.value(), 0, true);
11071    if (appenderOrErr.isErr()) {
11072      return false;
11073    }
11074 
11075    BulkAppender appender{appenderOrErr.unwrap()};
11076 
11077    // Experiment with moving this higher up the call stack
11078    // after we have experience from
11079    // https://bugzilla.mozilla.org/show_bug.cgi?id=1997255
11080    // on the parser side.
11081    bool simd = mozilla::htmlaccel::htmlaccelEnabled();
11082 
11083    for (StringBuilder* current = this; current;
11084         current = current->mNext.get()) {
11085      uint32_t len = current->mUnits.Length();
11086      for (uint32_t i = 0; i < len; ++i) {
11087        Unit& u = current->mUnits[i];
11088        switch (u.mType) {
11089          case Unit::Type::Atom:
11090            appender.Append(*(u.mAtom));
11091            break;
11092          case Unit::Type::String:
11093            appender.Append(u.mString);
11094            break;
11095          case Unit::Type::StringWithEncode:
11096            if (simd) {
11097              EncodeAttrString<StringBuilderSIMD>(u.mString, appender);
11098            } else {
11099              EncodeAttrString<StringBuilderALU>(u.mString, appender);
11100            }
11101            break;
11102          case Unit::Type::Literal:
11103            appender.Append(u.mLiteral.AsSpan());
11104            break;
11105          case Unit::Type::TextFragment:
11106            if (u.mCharacterDataBuffer->Is2b()) {
11107              appender.Append(Span(u.mCharacterDataBuffer->Get2b(),
11108                                   u.mCharacterDataBuffer->GetLength()));
11109            } else {
11110              appender.Append(Span(u.mCharacterDataBuffer->Get1b(),
11111                                   u.mCharacterDataBuffer->GetLength()));
11112            }
11113            break;
11114          case Unit::Type::TextFragmentWithEncode:
11115            if (u.mCharacterDataBuffer->Is2b()) {
11116              if (simd) {
11117                EncodeTextFragment<StringBuilderSIMD>(
11118                    Span(u.mCharacterDataBuffer->Get2b(),
11119                         u.mCharacterDataBuffer->GetLength()),
11120                    appender);
11121 
11122              } else {
11123                EncodeTextFragment<StringBuilderALU>(
11124                    Span(u.mCharacterDataBuffer->Get2b(),
11125                         u.mCharacterDataBuffer->GetLength()),
11126                    appender);
11127              }
11128            } else {
11129              if (simd) {
11130                EncodeTextFragment<StringBuilderSIMD>(
11131                    Span(u.mCharacterDataBuffer->Get1b(),
11132                         u.mCharacterDataBuffer->GetLength()),
11133                    appender);
11134 
11135              } else {
11136                EncodeTextFragment<StringBuilderALU>(
11137                    Span(u.mCharacterDataBuffer->Get1b(),
11138                         u.mCharacterDataBuffer->GetLength()),
11139                    appender);
11140              }
11141            }
11142            break;
11143          default:
11144            MOZ_CRASH("Unknown unit type?")do { do { } while (false); MOZ_ReportCrash("" "Unknown unit type?"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 11144); AnnotateMozCrashReason
("MOZ_CRASH(" "Unknown unit type?" ")"); do { MOZ_CrashSequence
(__null, 11144); __attribute__((nomerge)) ::abort(); } while (
false); } while (false);
11145        }
11146      }
11147    }
11148    appender.Finish();
11149    return true;
11150  }
11151 
11152 private:
11153  Unit* AddUnit() {
11154    if (mLast->mUnits.Length() == STRING_BUFFER_UNITS) {
11155      new StringBuilder(this);
11156    }
11157    return mLast->mUnits.AppendElement();
11158  }
11159 
11160  explicit StringBuilder(StringBuilder* aFirst) : mLast(nullptr), mLength(0) {
11161    MOZ_COUNT_CTOR(StringBuilder)do { static_assert(std::is_class_v<StringBuilder>, "Token '"
 "StringBuilder" "' is not a class type."); static_assert(!std
::is_base_of_v<nsISupports, StringBuilder>, "nsISupports classes don't need to call MOZ_COUNT_CTOR or "
 "MOZ_COUNT_DTOR");; NS_LogCtor((void*)this, "StringBuilder",
 sizeof(*this)); } while (0);
11162    aFirst->mLast->mNext = WrapUnique(this);
11163    aFirst->mLast = this;
11164  }
11165 
11166  template <class S>
11167  void EncodeAttrString(Span<const char16_t> aStr, BulkAppender& aAppender) {
11168    size_t flushedUntil = 0;
11169    size_t currentPosition = 0;
11170    const char16_t* ptr = aStr.Elements();
11171    const char16_t* end = ptr + aStr.Length();
11172 
11173  // continue by label (committee proposal P3568) isn't in C++, yet, so
11174  // goto is used for what's logically continuing an outer loop.
11175  //
11176  // The purpose of two loop levels is to efficiently stay in the inner
11177  // loop when there isn't a full SIMD stride left.
11178  //
11179  // Strange indent thanks to clang-format.
11180  outer:
11181    // Check for having at least a SIMD stride of data to avoid useless
11182    // non-inline function calls when there isn't a full stride left.
11183    // This should become unnecessary if it turns out to be feasible
11184    // to inline the call without triggering
11185    // https://github.com/llvm/llvm-project/issues/160886 .
11186    if (S::SIMD && (end - ptr >= 16)) {
11187      // Need to check ifdef inside here in order to make even non-opt
11188      // build consider `S::SIMD` used.
11189#ifdef MOZ_MAY_HAVE_HTMLACCEL1
11190      size_t skipped =
11191          mozilla::htmlaccel::SkipNonEscapedInAttributeValue(ptr, end);
11192      ptr += skipped;
11193      currentPosition += skipped;
11194#endif
11195    }
11196    while (ptr != end) {
11197      char16_t c = *ptr;
11198      ptr++;
11199      switch (c) {
11200        case '"':
11201          aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11202          aAppender.AppendLiteral(u"&quot;");
11203          currentPosition++;
11204          flushedUntil = currentPosition;
11205          goto outer;
11206        case '&':
11207          aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11208          aAppender.AppendLiteral(u"&amp;");
11209          currentPosition++;
11210          flushedUntil = currentPosition;
11211          goto outer;
11212        case 0x00A0:
11213          aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11214          aAppender.AppendLiteral(u"&nbsp;");
11215          currentPosition++;
11216          flushedUntil = currentPosition;
11217          goto outer;
11218        case '<':
11219          if (StaticPrefs::dom_security_html_serialization_escape_lt_gt()) {
11220            aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11221            aAppender.AppendLiteral(u"&lt;");
11222            currentPosition++;
11223            flushedUntil = currentPosition;
11224          } else {
11225            currentPosition++;
11226          }
11227          goto outer;
11228        case '>':
11229          if (StaticPrefs::dom_security_html_serialization_escape_lt_gt()) {
11230            aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11231            aAppender.AppendLiteral(u"&gt;");
11232            currentPosition++;
11233            flushedUntil = currentPosition;
11234          } else {
11235            currentPosition++;
11236          }
11237          goto outer;
11238        default:
11239          currentPosition++;
11240          continue;
11241      }
11242    }
11243    // Logically the outer loop ends here.
11244    if (currentPosition > flushedUntil) {
11245      aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11246    }
11247  }
11248 
11249  template <class S, class T>
11250  void EncodeTextFragment(Span<const T> aStr, BulkAppender& aAppender) {
11251    size_t flushedUntil = 0;
11252    size_t currentPosition = 0;
11253    const T* ptr = aStr.Elements();
11254    const T* end = ptr + aStr.Length();
11255 
11256  // continue by label (committee proposal P3568) isn't in C++, yet, so
11257  // goto is used for what's logically continuing an outer loop.
11258  //
11259  // The purpose of two loop levels is to efficiently stay in the inner
11260  // loop when there isn't a full SIMD stride left.
11261  //
11262  // Strange indent thanks to clang-format.
11263  outer:
11264    // Check for having at least a SIMD stride of data to avoid useless
11265    // non-inline function calls when there isn't a full stride left.
11266    // This should become unnecessary if it turns out to be feasible
11267    // to inline the call without triggering
11268    // https://github.com/llvm/llvm-project/issues/160886 .
11269    if (S::SIMD && (end - ptr >= 16)) {
11270      // Need to check ifdef inside here in order to make even non-opt
11271      // build consider `S::SIMD` used.
11272#ifdef MOZ_MAY_HAVE_HTMLACCEL1
11273      size_t skipped = mozilla::htmlaccel::SkipNonEscapedInTextNode(ptr, end);
11274      ptr += skipped;
11275      currentPosition += skipped;
11276#endif
11277    }
11278    while (ptr != end) {
11279      T c = *ptr;
11280      ++ptr;
11281      switch (c) {
11282        case '<':
11283          aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11284          aAppender.AppendLiteral(u"&lt;");
11285          currentPosition++;
11286          flushedUntil = currentPosition;
11287          goto outer;
11288        case '>':
11289          aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11290          aAppender.AppendLiteral(u"&gt;");
11291          currentPosition++;
11292          flushedUntil = currentPosition;
11293          goto outer;
11294        case '&':
11295          aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11296          aAppender.AppendLiteral(u"&amp;");
11297          currentPosition++;
11298          flushedUntil = currentPosition;
11299          goto outer;
11300        case T(0xA0):
11301          aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11302          aAppender.AppendLiteral(u"&nbsp;");
11303          currentPosition++;
11304          flushedUntil = currentPosition;
11305          goto outer;
11306        default:
11307          currentPosition++;
11308          continue;
11309      }
11310    }
11311    // Logically the outer loop ends here.
11312    if (currentPosition > flushedUntil) {
11313      aAppender.Append(aStr.FromTo(flushedUntil, currentPosition));
11314    }
11315  }
11316 
11317  AutoTArray<Unit, STRING_BUFFER_UNITS> mUnits;
11318  UniquePtr<StringBuilder> mNext;
11319  StringBuilder* mLast;
11320  // mLength is used only in the first StringBuilder object in the linked
11321  // list.
11322  CheckedInt<uint32_t> mLength;
11323};
11324 
11325static_assert(sizeof(StringBuilder) <= StringBuilder::TARGET_SIZE,
11326              "StringBuilder should fit in the target bucket");
11327 
11328}  // namespace
11329 
11330static void AppendEncodedCharacters(const CharacterDataBuffer* aText,
11331                                    StringBuilder& aBuilder) {
11332  uint32_t numEncodedChars = 0;
11333  uint32_t len = aText->GetLength();
11334  if (aText->Is2b()) {
11335    const char16_t* data = aText->Get2b();
11336#ifdef MOZ_MAY_HAVE_HTMLACCEL1
11337    if (mozilla::htmlaccel::htmlaccelEnabled()) {
11338      numEncodedChars =
11339          mozilla::htmlaccel::CountEscapedInTextNode(data, data + len);
11340    } else
11341#endif
11342    {
11343      for (uint32_t i = 0; i < len; ++i) {
11344        const char16_t c = data[i];
11345        switch (c) {
11346          case '<':
11347          case '>':
11348          case '&':
11349          case 0x00A0:
11350            ++numEncodedChars;
11351            break;
11352          default:
11353            break;
11354        }
11355      }
11356    }
11357  } else {
11358    const char* data = aText->Get1b();
11359#ifdef MOZ_MAY_HAVE_HTMLACCEL1
11360    if (mozilla::htmlaccel::htmlaccelEnabled()) {
11361      numEncodedChars =
11362          mozilla::htmlaccel::CountEscapedInTextNode(data, data + len);
11363    } else
11364#endif
11365    {
11366      for (uint32_t i = 0; i < len; ++i) {
11367        const unsigned char c = data[i];
11368        switch (c) {
11369          case '<':
11370          case '>':
11371          case '&':
11372          case 0x00A0:
11373            ++numEncodedChars;
11374            break;
11375          default:
11376            break;
11377        }
11378      }
11379    }
11380  }
11381 
11382  if (numEncodedChars) {
11383    // For simplicity, conservatively estimate the size of the string after
11384    // encoding. This will result in reserving more memory than we actually
11385    // need, but that should be fine unless the string has an enormous number
11386    // of eg < in it. We subtract 1 for the null terminator, then 1 more for
11387    // the existing character that will be replaced.
11388    constexpr uint32_t maxCharExtraSpace =
11389        std::max({std::size("&lt;"), std::size("&gt;"), std::size("&amp;"),
11390                  std::size("&nbsp;")}) -
11391        2;
11392    static_assert(maxCharExtraSpace < 100, "Possible underflow");
11393    CheckedInt<uint32_t> maxExtraSpace =
11394        CheckedInt<uint32_t>(numEncodedChars) * maxCharExtraSpace;
11395    aBuilder.AppendWithEncode(aText, maxExtraSpace + len);
11396  } else {
11397    aBuilder.Append(aText);
11398  }
11399}
11400 
11401static CheckedInt<uint32_t> ExtraSpaceNeededForAttrEncoding(
11402    const nsAString& aValue) {
11403  const char16_t* c = aValue.BeginReading();
11404  const char16_t* end = aValue.EndReading();
11405 
11406  uint32_t numEncodedChars = 0;
11407#ifdef MOZ_MAY_HAVE_HTMLACCEL1
11408  if (mozilla::htmlaccel::htmlaccelEnabled()) {
11409    numEncodedChars = mozilla::htmlaccel::CountEscapedInAttributeValue(c, end);
11410  } else
11411#endif
11412  {
11413    while (c < end) {
11414      switch (*c) {
11415        case '"':
11416        case '&':
11417        case 0x00A0:  // NO-BREAK SPACE
11418        case '<':
11419        case '>':
11420          ++numEncodedChars;
11421          break;
11422        default:
11423          break;
11424      }
11425      ++c;
11426    }
11427  }
11428 
11429  if (!numEncodedChars) {
11430    return 0;
11431  }
11432 
11433  // For simplicity, conservatively estimate the size of the string after
11434  // encoding. This will result in reserving more memory than we actually
11435  // need, but that should be fine unless the string has an enormous number of
11436  // & in it. We subtract 1 for the null terminator, then 1 more for the
11437  // existing character that will be replaced.
11438  constexpr uint32_t maxCharExtraSpace =
11439      std::max({std::size("&quot;"), std::size("&amp;"), std::size("&nbsp;"),
11440                std::size("&lt;"), std::size("&gt;")}) -
11441      2;
11442  static_assert(maxCharExtraSpace < 100, "Possible underflow");
11443  return CheckedInt<uint32_t>(numEncodedChars) * maxCharExtraSpace;
11444}
11445 
11446static void AppendEncodedAtomAttributeValue(nsAtom* aAtom,
11447                                            StringBuilder& aBuilder) {
11448  nsDependentAtomString atomStr(aAtom);
11449  auto space = ExtraSpaceNeededForAttrEncoding(atomStr);
11450  if (space.isValid() && !space.value()) {
11451    aBuilder.Append(aAtom);
11452  } else {
11453    aBuilder.AppendWithAttrEncode(nsString(atomStr), space + atomStr.Length());
11454  }
11455}
11456 
11457static void AppendEncodedAttributeValue(const nsAttrValue& aValue,
11458                                        StringBuilder& aBuilder) {
11459  if (nsAtom* atom = aValue.GetStoredAtom()) {
11460    AppendEncodedAtomAttributeValue(atom, aBuilder);
11461    return;
11462  }
11463 
11464  // NOTE(emilio): In most cases this will just be a reference to the stored
11465  // nsStringBuffer.
11466  nsString str;
11467  aValue.ToString(str);
11468  auto space = ExtraSpaceNeededForAttrEncoding(str);
11469  if (!space.isValid() || space.value()) {
11470    aBuilder.AppendWithAttrEncode(std::move(str), space + str.Length());
11471  } else {
11472    aBuilder.Append(std::move(str));
11473  }
11474}
11475 
11476static void StartElement(Element* aElement, StringBuilder& aBuilder) {
11477  nsAtom* localName = aElement->NodeInfo()->NameAtom();
11478  const int32_t tagNS = aElement->GetNameSpaceID();
11479 
11480  aBuilder.Append(u"<");
11481  if (tagNS == kNameSpaceID_XHTML3 || tagNS == kNameSpaceID_SVG9 ||
11482      tagNS == kNameSpaceID_MathML6) {
11483    aBuilder.Append(localName);
11484  } else {
11485    aBuilder.Append(nsString(aElement->NodeName()));
11486  }
11487 
11488  if (CustomElementData* ceData = aElement->GetCustomElementData()) {
11489    nsAtom* isAttr = ceData->GetIs(aElement);
11490    if (isAttr && !aElement->HasAttr(nsGkAtoms::is)) {
11491      aBuilder.Append(uR"( is=")");
11492      AppendEncodedAtomAttributeValue(isAttr, aBuilder);
11493      aBuilder.Append(uR"(")");
11494    }
11495  }
11496 
11497  uint32_t i = 0;
11498  while (BorrowedAttrInfo info = aElement->GetAttrInfoAt(i++)) {
11499    const nsAttrName* name = info.mName;
11500 
11501    int32_t attNs = name->NamespaceID();
11502    nsAtom* attName = name->LocalName();
11503 
11504    // Filter out any attribute starting with [-|_]moz
11505    // FIXME(emilio): Do we still need this?
11506    nsDependentAtomString attrNameStr(attName);
11507    if (StringBeginsWith(attrNameStr, u"_moz"_ns) ||
11508        StringBeginsWith(attrNameStr, u"-moz"_ns)) {
11509      continue;
11510    }
11511 
11512    aBuilder.Append(u" ");
11513 
11514    if (MOZ_LIKELY(attNs == kNameSpaceID_None)(__builtin_expect(!!(attNs == kNameSpaceID_None), 1)) ||
11515        (attNs == kNameSpaceID_XMLNS1 && attName == nsGkAtoms::xmlns)) {
11516      // Nothing else required
11517    } else if (attNs == kNameSpaceID_XML2) {
11518      aBuilder.Append(u"xml:");
11519    } else if (attNs == kNameSpaceID_XMLNS1) {
11520      aBuilder.Append(u"xmlns:");
11521    } else if (attNs == kNameSpaceID_XLink4) {
11522      aBuilder.Append(u"xlink:");
11523    } else if (nsAtom* prefix = name->GetPrefix()) {
11524      aBuilder.Append(prefix);
11525      aBuilder.Append(u":");
11526    }
11527 
11528    aBuilder.Append(attName);
11529    aBuilder.Append(uR"(=")");
11530    AppendEncodedAttributeValue(*info.mValue, aBuilder);
11531    aBuilder.Append(uR"(")");
11532  }
11533 
11534  aBuilder.Append(u">");
11535 
11536  /*
11537  // Per HTML spec we should append one \n if the first child of
11538  // pre/textarea/listing is a textnode and starts with a \n.
11539  // But because browsers haven't traditionally had that behavior,
11540  // we're not changing our behavior either - yet.
11541  if (aContent->IsHTMLElement()) {
11542    if (localName == nsGkAtoms::pre || localName == nsGkAtoms::textarea ||
11543        localName == nsGkAtoms::listing) {
11544      nsIContent* fc = aContent->GetFirstChild();
11545      if (fc &&
11546          (fc->NodeType() == nsINode::TEXT_NODE ||
11547           fc->NodeType() == nsINode::CDATA_SECTION_NODE)) {
11548        const CharacterDataBuffer* text = fc->GetText();
11549        if (text && text->GetLength() && text->CharAt(0) == char16_t('\n')) {
11550          aBuilder.Append("\n");
11551        }
11552      }
11553    }
11554  }*/
11555}
11556 
11557static inline bool ShouldEscape(nsIContent* aParent) {
11558  if (!aParent || !aParent->IsHTMLElement()) {
11559    return true;
11560  }
11561 
11562  static const nsAtom* nonEscapingElements[] = {
11563      nsGkAtoms::style,     nsGkAtoms::script,  nsGkAtoms::xmp,
11564      nsGkAtoms::iframe,    nsGkAtoms::noembed, nsGkAtoms::noframes,
11565      nsGkAtoms::plaintext, nsGkAtoms::noscript};
11566  static mozilla::BitBloomFilter<12, nsAtom> sFilter;
11567  static bool sInitialized = false;
11568  if (!sInitialized) {
11569    sInitialized = true;
11570    for (auto& nonEscapingElement : nonEscapingElements) {
11571      sFilter.add(nonEscapingElement);
11572    }
11573  }
11574 
11575  nsAtom* tag = aParent->NodeInfo()->NameAtom();
11576  if (sFilter.mightContain(tag)) {
11577    for (auto& nonEscapingElement : nonEscapingElements) {
11578      if (tag == nonEscapingElement) {
11579        if (MOZ_UNLIKELY(tag == nsGkAtoms::noscript)(__builtin_expect(!!(tag == nsGkAtoms::noscript), 0)) &&
11580            MOZ_UNLIKELY(!aParent->OwnerDoc()->IsScriptEnabled())(__builtin_expect(!!(!aParent->OwnerDoc()->IsScriptEnabled
()), 0))) {
11581          return true;
11582        }
11583        return false;
11584      }
11585    }
11586  }
11587  return true;
11588}
11589 
11590static inline bool IsVoidTag(Element* aElement) {
11591  if (!aElement->IsHTMLElement()) {
11592    return false;
11593  }
11594  return FragmentOrElement::IsHTMLVoid(aElement->NodeInfo()->NameAtom());
11595}
11596 
11597static bool StartSerializingShadowDOM(
11598    nsINode* aNode, StringBuilder& aBuilder, bool aSerializableShadowRoots,
11599    const Sequence<OwningNonNull<ShadowRoot>>& aShadowRoots) {
11600  ShadowRoot* shadow = aNode->GetShadowRoot();
11601  if (!shadow || ((!aSerializableShadowRoots || !shadow->Serializable()) &&
11602                  !aShadowRoots.Contains(shadow))) {
11603    return false;
11604  }
11605 
11606  // https://html.spec.whatwg.org/#html-fragment-serialisation-algorithm
11607  // steps 4-12
11608 
11609  // 4.2.1. Append "<template shadowrootmode="".
11610  aBuilder.Append(u"<template shadowrootmode=\"");
11611 
11612  // 4.2.2. If shadow's mode is "open", then append "open". Otherwise, append
11613  //    "closed".
11614  // 3. Append U+0022 (").
11615  if (shadow->IsClosed()) {
11616    aBuilder.Append(u"closed\"");
11617  } else {
11618    aBuilder.Append(u"open\"");
11619  }
11620 
11621  // 4. If shadow's delegates focus is set, then append "
11622  // shadowrootdelegatesfocus=""".
11623  if (shadow->DelegatesFocus()) {
11624    aBuilder.Append(u" shadowrootdelegatesfocus=\"\"");
11625  }
11626 
11627  // 5. If shadow's serializable is set, then append "
11628  //    shadowrootserializable=""".
11629  if (shadow->Serializable()) {
11630    aBuilder.Append(u" shadowrootserializable=\"\"");
11631  }
11632 
11633  // 6. If shadow's slot assignment is "manual", then append "
11634  // shadowrootslotassignment="manual"".
11635  if (StaticPrefs::dom_shadowdom_shadowRootSlotAssignment_enabled() &&
11636      shadow->SlotAssignment() == SlotAssignmentMode::Manual) {
11637    aBuilder.Append(u" shadowrootslotassignment=\"manual\"");
11638  }
11639 
11640  // 7. If shadow's slot assignment is "manual", then append "
11641  // shadowrootslotassignment="manual"".
11642  if (shadow->Clonable()) {
11643    aBuilder.Append(u" shadowrootclonable=\"\"");
11644  }
11645 
11646  auto isGlobalCustomElementRegistry = [](CustomElementRegistry* registry) {
11647    return registry && !registry->IsScoped();
11648  };
11649 
11650  // 8. Let shouldAppendRegistryAttribute be the result of running these steps:
11651  const bool shouldAppendRegistryAttribute = [&]() {
11652    if (!StaticPrefs::dom_scoped_custom_element_registries_enabled()) {
11653      return false;
11654    }
11655 
11656    // 8.1. Let documentRegistry be shadow's node document's custom element
11657    //    registry.
11658    CustomElementRegistry* documentRegistry =
11659        shadow->OwnerDoc()->GetCustomElementRegistry();
11660    // 8.2. Let shadowRegistry be shadow's custom element registry.
11661    CustomElementRegistry* shadowRegistry = shadow->GetCustomElementRegistry();
11662 
11663    // 8.3. If documentRegistry is null and shadowRegistry is null, then return
11664    //    false.
11665    if (!documentRegistry && !shadowRegistry) {
11666      return false;
11667    }
11668    // 8.4. If documentRegistry is a global custom element registry and
11669    //    shadowRegistry is a global custom element registry, then return
11670    //    false.
11671    else if (isGlobalCustomElementRegistry(documentRegistry) &&
11672             isGlobalCustomElementRegistry(shadowRegistry)) {
11673      return false;
11674    }
11675 
11676    // 8.5. Return true.
11677    return true;
11678  }();
11679 
11680  // 9. If shouldAppendRegistryAttribute is true, then append "
11681  //    shadowrootcustomelementregistry=""".
11682  if (shouldAppendRegistryAttribute) {
11683    aBuilder.Append(u" shadowrootcustomelementregistry=\"\"");
11684  }
11685 
11686  // 10. Append U+003E (>).
11687  aBuilder.Append(u">");
11688 
11689  // 11. Append the value of running the HTML fragment serialization algorithm
11690  //     with shadow, serializableShadowRoots, and shadowRoots (thus recursing
11691  //     into this algorithm for that element).
11692  // (Returning `true` tells the caller to continue).
11693  if (!shadow->HasChildren()) {
11694    // 12. Append "</template>".
11695    aBuilder.Append(u"</template>");
11696    return false;
11697  }
11698  return true;
11699}
11700 
11701template <SerializeShadowRoots ShouldSerializeShadowRoots>
11702static void SerializeNodeToMarkupInternal(
11703    nsINode* aRoot, bool aDescendantsOnly, StringBuilder& aBuilder,
11704    bool aSerializableShadowRoots,
11705    const Sequence<OwningNonNull<ShadowRoot>>& aShadowRoots) {
11706  nsINode* current =
11707      aDescendantsOnly ? aRoot->GetFirstChildOfTemplateOrNode() : aRoot;
11708  if (!current) {
11709    return;
11710  }
11711 
11712  nsIContent* next;
11713  while (true) {
11714    bool isVoid = false;
11715    switch (current->NodeType()) {
11716      case nsINode::ELEMENT_NODE: {
11717        Element* elem = current->AsElement();
11718        StartElement(elem, aBuilder);
11719 
11720        if constexpr (ShouldSerializeShadowRoots == SerializeShadowRoots::Yes) {
11721          if (StartSerializingShadowDOM(
11722                  current, aBuilder, aSerializableShadowRoots, aShadowRoots)) {
11723            current = current->GetShadowRoot()->GetFirstChild();
11724            continue;
11725          }
11726        }
11727 
11728        isVoid = IsVoidTag(elem);
11729        if (!isVoid && (next = current->GetFirstChildOfTemplateOrNode())) {
11730          current = next;
11731          continue;
11732        }
11733        break;
11734      }
11735 
11736      case nsINode::TEXT_NODE:
11737      case nsINode::CDATA_SECTION_NODE: {
11738        const CharacterDataBuffer* characterDataBuffer =
11739            &current->AsText()->DataBuffer();
11740        nsIContent* parent = current->GetParent();
11741        if (ShouldEscape(parent)) {
11742          AppendEncodedCharacters(characterDataBuffer, aBuilder);
11743        } else {
11744          aBuilder.Append(characterDataBuffer);
11745        }
11746        break;
11747      }
11748 
11749      case nsINode::COMMENT_NODE: {
11750        aBuilder.Append(u"<!--");
11751        aBuilder.Append(
11752            static_cast<nsIContent*>(current)->GetCharacterDataBuffer());
11753        aBuilder.Append(u"-->");
11754        break;
11755      }
11756 
11757      case nsINode::DOCUMENT_TYPE_NODE: {
11758        aBuilder.Append(u"<!DOCTYPE ");
11759        aBuilder.Append(nsString(current->NodeName()));
11760        aBuilder.Append(u">");
11761        break;
11762      }
11763 
11764      case nsINode::PROCESSING_INSTRUCTION_NODE: {
11765        aBuilder.Append(u"<?");
11766        aBuilder.Append(nsString(current->NodeName()));
11767        aBuilder.Append(u" ");
11768        aBuilder.Append(
11769            static_cast<nsIContent*>(current)->GetCharacterDataBuffer());
11770        aBuilder.Append(u">");
11771        break;
11772      }
11773    }
11774 
11775    while (true) {
11776      if (!isVoid && current->NodeType() == nsINode::ELEMENT_NODE) {
11777        aBuilder.Append(u"</");
11778        nsIContent* elem = static_cast<nsIContent*>(current);
11779        if (elem->IsHTMLElement() || elem->IsSVGElement() ||
11780            elem->IsMathMLElement()) {
11781          aBuilder.Append(elem->NodeInfo()->NameAtom());
11782        } else {
11783          aBuilder.Append(nsString(current->NodeName()));
11784        }
11785        aBuilder.Append(u">");
11786      }
11787      isVoid = false;
11788 
11789      if (current == aRoot) {
11790        return;
11791      }
11792 
11793      if ((next = current->GetNextSibling())) {
11794        current = next;
11795        break;
11796      }
11797 
11798      if constexpr (ShouldSerializeShadowRoots == SerializeShadowRoots::Yes) {
11799        // If the current node is a shadow root, then we must go to its host.
11800        // Since shadow DOMs are serialized declaratively as template
11801        // elements, we serialize the end tag of the template before going
11802        // back to serializing the shadow host.
11803        if (current->IsShadowRoot()) {
11804          current = current->GetContainingShadowHost();
11805          aBuilder.Append(u"</template>");
11806 
11807          if (current->HasChildren()) {
11808            current = current->GetFirstChildOfTemplateOrNode();
11809            break;
11810          }
11811          continue;
11812        }
11813      }
11814 
11815      current = current->GetParentNode();
11816 
11817      // Handle template element. If the parent is a template's content,
11818      // then adjust the parent to be the template element.
11819      if (current != aRoot &&
11820          current->NodeType() == nsINode::DOCUMENT_FRAGMENT_NODE) {
11821        DocumentFragment* frag = static_cast<DocumentFragment*>(current);
11822        nsIContent* fragHost = frag->GetHost();
11823        if (fragHost && fragHost->IsTemplateElement()) {
11824          current = fragHost;
11825        }
11826      }
11827 
11828      if (aDescendantsOnly && current == aRoot) {
11829        return;
11830      }
11831    }
11832  }
11833}
11834 
11835template <SerializeShadowRoots ShouldSerializeShadowRoots>
11836bool nsContentUtils::SerializeNodeToMarkup(
11837    nsINode* aRoot, bool aDescendantsOnly, nsAString& aOut,
11838    bool aSerializableShadowRoots,
11839    const Sequence<OwningNonNull<ShadowRoot>>& aShadowRoots) {
11840  // If you pass in a DOCUMENT_NODE, you must pass aDescendentsOnly as true
11841  MOZ_ASSERT(aDescendantsOnly || aRoot->NodeType() != nsINode::DOCUMENT_NODE)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aDescendantsOnly || aRoot->NodeType() != nsINode::
DOCUMENT_NODE)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(aDescendantsOnly || aRoot->NodeType
() != nsINode::DOCUMENT_NODE))), 0))) { do { } while (false);
 MOZ_ReportAssertionFailure("aDescendantsOnly || aRoot->NodeType() != nsINode::DOCUMENT_NODE"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 11841); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aDescendantsOnly || aRoot->NodeType() != nsINode::DOCUMENT_NODE"
 ")"); do { MOZ_CrashSequence(__null, 11841); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
11842 
11843  StringBuilder builder;
11844  if constexpr (ShouldSerializeShadowRoots == SerializeShadowRoots::Yes) {
11845    if (aDescendantsOnly &&
11846        StartSerializingShadowDOM(aRoot, builder, aSerializableShadowRoots,
11847                                  aShadowRoots)) {
11848      SerializeNodeToMarkupInternal<SerializeShadowRoots::Yes>(
11849          aRoot->GetShadowRoot(), true, builder, aSerializableShadowRoots,
11850          aShadowRoots);
11851      // The template tag is opened in StartSerializingShadowDOM, so we need
11852      // to close it here before serializing any children of aRoot.
11853      builder.Append(u"</template>");
11854    }
11855  }
11856 
11857  SerializeNodeToMarkupInternal<ShouldSerializeShadowRoots>(
11858      aRoot, aDescendantsOnly, builder, aSerializableShadowRoots, aShadowRoots);
11859  return builder.ToString(aOut);
11860}
11861 
11862template bool nsContentUtils::SerializeNodeToMarkup<SerializeShadowRoots::No>(
11863    nsINode* aRoot, bool aDescendantsOnly, nsAString& aOut,
11864    bool aSerializableShadowRoots,
11865    const Sequence<OwningNonNull<ShadowRoot>>& aShadowRoots);
11866template bool nsContentUtils::SerializeNodeToMarkup<SerializeShadowRoots::Yes>(
11867    nsINode* aRoot, bool aDescendantsOnly, nsAString& aOut,
11868    bool aSerializableShadowRoots,
11869    const Sequence<OwningNonNull<ShadowRoot>>& aShadowRoots);
11870 
11871bool nsContentUtils::IsSpecificAboutPage(JSObject* aGlobal, const char* aUri) {
11872  // aUri must start with about: or this isn't the right function to be using.
11873  MOZ_ASSERT(strncmp(aUri, "about:", 6) == 0)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(strncmp(aUri, "about:", 6) == 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(strncmp(aUri, "about:", 6) ==
 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("strncmp(aUri, \"about:\", 6) == 0", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 11873); AnnotateMozCrashReason("MOZ_ASSERT" "(" "strncmp(aUri, \"about:\", 6) == 0"
 ")"); do { MOZ_CrashSequence(__null, 11873); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
11874 
11875  // Make sure the global is a window
11876  MOZ_DIAGNOSTIC_ASSERT(JS_IsGlobalObject(aGlobal))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(JS_IsGlobalObject(aGlobal))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(JS_IsGlobalObject(aGlobal)))
), 0))) { do { } while (false); MOZ_ReportAssertionFailure("JS_IsGlobalObject(aGlobal)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 11876); AnnotateMozCrashReason
("MOZ_DIAGNOSTIC_ASSERT" "(" "JS_IsGlobalObject(aGlobal)" ")"
); do { MOZ_CrashSequence(__null, 11876); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
11877  nsGlobalWindowInner* win = xpc::WindowOrNull(aGlobal);
11878  if (!win) {
11879    return false;
11880  }
11881 
11882  nsCOMPtr<nsIPrincipal> principal = win->GetPrincipal();
11883  NS_ENSURE_TRUE(principal, false)do { if ((__builtin_expect(!!(!(principal)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "principal" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 11883); return
 false; } } while (false);
11884 
11885  // First check the scheme to avoid getting long specs in the common case.
11886  if (!principal->SchemeIs("about")) {
11887    return false;
11888  }
11889 
11890  nsAutoCString spec;
11891  principal->GetAsciiSpec(spec);
11892 
11893  return spec.EqualsASCII(aUri);
11894}
11895 
11896/* static */
11897nsIDocShell* nsContentUtils::GetDocShellForEventTarget(EventTarget* aTarget) {
11898  if (!aTarget) {
11899    return nullptr;
11900  }
11901 
11902  nsCOMPtr<nsPIDOMWindowInner> innerWindow;
11903  if (nsCOMPtr<nsINode> node = nsINode::FromEventTarget(aTarget)) {
11904    bool ignore;
11905    innerWindow =
11906        do_QueryInterface(node->OwnerDoc()->GetScriptHandlingObject(ignore));
11907  } else if ((innerWindow = nsPIDOMWindowInner::FromEventTarget(aTarget))) {
11908    // Nothing else to do
11909  } else if (nsCOMPtr<DOMEventTargetHelper> helper =
11910                 do_QueryInterface(aTarget)) {
11911    innerWindow = helper->GetOwnerWindow();
11912  }
11913 
11914  if (innerWindow) {
11915    return innerWindow->GetDocShell();
11916  }
11917 
11918  return nullptr;
11919}
11920 
11921/*
11922 * Note: this function only relates to figuring out HTTPS state, which is an
11923 * input to the Secure Context algorithm.  We are not actually implementing
11924 * any part of the Secure Context algorithm itself here.
11925 *
11926 * This is a bit of a hack.  Ideally we'd propagate HTTPS state through
11927 * nsIChannel as described in the Fetch and HTML specs, but making channels
11928 * know about whether they should inherit HTTPS state, propagating information
11929 * about who the channel's "client" is, exposing GetHttpsState API on channels
11930 * and modifying the various cache implementations to store and retrieve HTTPS
11931 * state involves a huge amount of code (see bug 1220687).  We avoid that for
11932 * now using this function.
11933 *
11934 * This function takes advantage of the observation that we can return true if
11935 * nsIContentSecurityManager::IsOriginPotentiallyTrustworthy returns true for
11936 * the document's origin (e.g. the origin has a scheme of 'https' or host
11937 * 'localhost' etc.).  Since we generally propagate a creator document's
11938 * origin onto data:, blob:, etc. documents, this works for them too.
11939 *
11940 * The scenario where this observation breaks down is sandboxing without the
11941 * 'allow-same-origin' flag, since in this case a document is given a unique
11942 * origin (IsOriginPotentiallyTrustworthy would return false).  We handle that
11943 * by using the origin that the document would have had had it not been
11944 * sandboxed.
11945 *
11946 * DEFICIENCIES: Note that this function uses nsIScriptSecurityManager's
11947 * getChannelResultPrincipalIfNotSandboxed, and that method's ignoring of
11948 * sandboxing is limited to the immediate sandbox.  In the case that aDocument
11949 * should inherit its origin (e.g. data: URI) but its parent has ended up
11950 * with a unique origin due to sandboxing further up the parent chain we may
11951 * end up returning false when we would ideally return true (since we will
11952 * examine the parent's origin for 'https' and not finding it.)  This means
11953 * that we may restrict the privileges of some pages unnecessarily in this
11954 * edge case.
11955 */
11956/* static */
11957bool nsContentUtils::HttpsStateIsModern(Document* aDocument) {
11958  if (!aDocument) {
11959    return false;
11960  }
11961 
11962  nsCOMPtr<nsIPrincipal> principal = aDocument->NodePrincipal();
11963 
11964  if (principal->IsSystemPrincipal()) {
11965    return true;
11966  }
11967 
11968  // If aDocument is sandboxed, try and get the principal that it would have
11969  // been given had it not been sandboxed:
11970  if (principal->GetIsNullPrincipal() &&
11971      (aDocument->GetSandboxFlags() & SANDBOXED_ORIGIN)) {
11972    nsIChannel* channel = aDocument->GetChannel();
11973    if (channel) {
11974      nsCOMPtr<nsIScriptSecurityManager> ssm =
11975          nsContentUtils::GetSecurityManager();
11976      nsresult rv = ssm->GetChannelResultPrincipalIfNotSandboxed(
11977          channel, getter_AddRefs(principal));
11978      if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
11979        return false;
11980      }
11981      if (principal->IsSystemPrincipal()) {
11982        // If a document with the system principal is sandboxing a subdocument
11983        // that would normally inherit the embedding element's principal (e.g.
11984        // a srcdoc document) then the embedding document does not trust the
11985        // content that is written to the embedded document.  Unlike when the
11986        // embedding document is https, in this case we have no indication as
11987        // to whether the embedded document's contents are delivered securely
11988        // or not, and the sandboxing would possibly indicate that they were
11989        // not.  To play it safe we return false here.  (See bug 1162772
11990        // comment 73-80.)
11991        return false;
11992      }
11993    }
11994  }
11995 
11996  if (principal->GetIsNullPrincipal()) {
11997    return false;
11998  }
11999 
12000  MOZ_ASSERT(principal->GetIsContentPrincipal())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(principal->GetIsContentPrincipal())>::isValid,
 "invalid assertion condition"); if ((__builtin_expect(!!(!(!
!(principal->GetIsContentPrincipal()))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("principal->GetIsContentPrincipal()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12000); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "principal->GetIsContentPrincipal()" ")"
); do { MOZ_CrashSequence(__null, 12000); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
12001 
12002  return principal->GetIsOriginPotentiallyTrustworthy();
12003}
12004 
12005/* static */
12006bool nsContentUtils::ComputeIsSecureContext(nsIChannel* aChannel) {
12007  MOZ_ASSERT(aChannel)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aChannel)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aChannel))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aChannel", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12007); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aChannel" ")"
); do { MOZ_CrashSequence(__null, 12007); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
12008 
12009  nsCOMPtr<nsIScriptSecurityManager> ssm = nsContentUtils::GetSecurityManager();
12010  nsCOMPtr<nsIPrincipal> principal;
12011  nsresult rv = ssm->GetChannelResultPrincipalIfNotSandboxed(
12012      aChannel, getter_AddRefs(principal));
12013  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
12014    return false;
12015  }
12016 
12017  const RefPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
12018 
12019  if (principal->IsSystemPrincipal()) {
12020    // If the load would've been sandboxed, treat this load as an untrusted
12021    // load, as system code considers sandboxed resources insecure.
12022    return !loadInfo->GetLoadingSandboxed();
12023  }
12024 
12025  if (principal->GetIsNullPrincipal()) {
12026    return false;
12027  }
12028 
12029  if (const RefPtr<WindowContext> windowContext =
12030          WindowContext::GetById(loadInfo->GetInnerWindowID())) {
12031    if (!windowContext->GetIsSecureContext()) {
12032      return false;
12033    }
12034  }
12035 
12036  return principal->GetIsOriginPotentiallyTrustworthy();
12037}
12038 
12039/* https://html.spec.whatwg.org/#concept-try-upgrade */
12040void nsContentUtils::TryToUpgradeElement(Element* aElement) {
12041  // 1. "Let definition be the result of looking up a custom element definition
12042  //    given element's custom element registry, element's namespace, element's
12043  //    local name, and element's is value."
12044  NodeInfo* nodeInfo = aElement->NodeInfo();
12045  RefPtr<nsAtom> typeAtom =
12046      aElement->GetCustomElementData()->GetCustomElementType();
12047 
12048  MOZ_ASSERT(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName()))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName
()))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName
())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("nodeInfo->NameAtom()->Equals(nodeInfo->LocalName())"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12048); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "nodeInfo->NameAtom()->Equals(nodeInfo->LocalName())"
 ")"); do { MOZ_CrashSequence(__null, 12048); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
12049 
12050  // When scoped custom element registries are enabled, look up the element's
12051  // own custom element registry (which may be a scoped registry, null, or the
12052  // document's global registry as fallback).
12053  CustomElementRegistry* registry = nullptr;
12054  if (StaticPrefs::dom_scoped_custom_element_registries_enabled()) {
12055    registry = aElement->GetCustomElementRegistry();
12056    if (!registry) {
12057      return;
12058    }
12059  }
12060 
12061  CustomElementDefinition* definition = nullptr;
12062  if (registry) {
12063    definition = registry->LookupCustomElementDefinition(
12064        nodeInfo->NameAtom(), nodeInfo->NamespaceID(), typeAtom);
12065  } else {
12066    MOZ_ASSERT(!StaticPrefs::dom_scoped_custom_element_registries_enabled())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!StaticPrefs::dom_scoped_custom_element_registries_enabled
())>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(!StaticPrefs::dom_scoped_custom_element_registries_enabled
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!StaticPrefs::dom_scoped_custom_element_registries_enabled()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12066); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!StaticPrefs::dom_scoped_custom_element_registries_enabled()"
 ")"); do { MOZ_CrashSequence(__null, 12066); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
12067    definition = nsContentUtils::LookupCustomElementDefinition(
12068        nodeInfo->GetDocument(), nodeInfo->NameAtom(), nodeInfo->NamespaceID(),
12069        typeAtom);
12070  }
12071 
12072  // 2. "If definition is not null, then enqueue a custom element upgrade
12073  //    reaction given element and definition."
12074  if (definition) {
12075    nsContentUtils::EnqueueUpgradeReaction(aElement, definition);
12076  } else if (registry) {
12077    registry->RegisterUnresolvedElement(aElement, typeAtom);
12078  } else {
12079    MOZ_ASSERT(!StaticPrefs::dom_scoped_custom_element_registries_enabled())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!StaticPrefs::dom_scoped_custom_element_registries_enabled
())>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(!StaticPrefs::dom_scoped_custom_element_registries_enabled
()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("!StaticPrefs::dom_scoped_custom_element_registries_enabled()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12079); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!StaticPrefs::dom_scoped_custom_element_registries_enabled()"
 ")"); do { MOZ_CrashSequence(__null, 12079); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
12080    // XXX: Not in spec. Add an unresolved custom element that is a candidate
12081    // for upgrade when a custom element is connected to the document.
12082    nsContentUtils::RegisterUnresolvedElement(aElement, typeAtom);
12083  }
12084}
12085 
12086MOZ_CAN_RUN_SCRIPT
12087static void DoCustomElementCreate(Element** aElement, JSContext* aCx,
12088                                  Document* aDoc, NodeInfo* aNodeInfo,
12089                                  CustomElementConstructor* aConstructor,
12090                                  ErrorResult& aRv, FromParser aFromParser) {
12091  JS::Rooted<JS::Value> constructResult(aCx);
12092  aConstructor->Construct(&constructResult, aRv, "Custom Element Create",
12093                          CallbackFunction::eRethrowExceptions);
12094  if (aRv.Failed()) {
12095    return;
12096  }
12097 
12098  RefPtr<Element> element;
12099  // constructResult is an ObjectValue because construction with a callback
12100  // always forms the return value from a JSObject.
12101  UNWRAP_OBJECT(Element, &constructResult, element)mozilla::dom::binding_detail::UnwrapObjectWithCrossOriginAsserts
< mozilla::dom::prototypes::id::Element, mozilla::dom::Element_Binding
::NativeType>(&constructResult, element);
12102  if (aNodeInfo->NamespaceEquals(kNameSpaceID_XHTML3)) {
12103    if (!element || !element->IsHTMLElement()) {
12104      aRv.ThrowTypeError<MSG_DOES_NOT_IMPLEMENT_INTERFACE>("\"this\"",
12105                                                           "HTMLElement");
12106      return;
12107    }
12108  } else {
12109    if (!element || !element->IsXULElement()) {
12110      aRv.ThrowTypeError<MSG_DOES_NOT_IMPLEMENT_INTERFACE>("\"this\"",
12111                                                           "XULElement");
12112      return;
12113    }
12114  }
12115 
12116  nsAtom* localName = aNodeInfo->NameAtom();
12117 
12118  if (aDoc != element->OwnerDoc() || element->GetParentNode() ||
12119      element->HasChildren() || element->GetAttrCount() ||
12120      element->NodeInfo()->NameAtom() != localName) {
12121    aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
12122    return;
12123  }
12124 
12125  if (element->IsHTMLElement()) {
12126    static_cast<HTMLElement*>(&*element)->InhibitRestoration(
12127        !(aFromParser & FROM_PARSER_NETWORK));
12128  }
12129 
12130  element.forget(aElement);
12131}
12132 
12133/* https://dom.spec.whatwg.org/#concept-create-element */
12134nsresult nsContentUtils::NewXULOrHTMLElement(
12135    Element** aResult, mozilla::dom::NodeInfo* aNodeInfo,
12136    FromParser aFromParser, nsAtom* aIsAtom,
12137    mozilla::dom::CustomElementDefinition* aDefinition,
12138    Maybe<RefPtr<CustomElementRegistry>> aCustomElementRegistry) {
12139  RefPtr<mozilla::dom::NodeInfo> nodeInfo = aNodeInfo;
12140  MOZ_ASSERT(nodeInfo->NamespaceEquals(kNameSpaceID_XHTML) ||do { static_assert( mozilla::detail::AssertionConditionType<
decltype(nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals
(8))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals
(8)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals(8)"
 " (" "Can only create XUL or XHTML elements." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12142); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals(8)"
 ") (" "Can only create XUL or XHTML elements." ")"); do { MOZ_CrashSequence
(__null, 12142); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
1
Taking false branch→
2
←
Loop condition is false.  Exiting loop→
12141                 nodeInfo->NamespaceEquals(kNameSpaceID_XUL),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals
(8))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals
(8)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals(8)"
 " (" "Can only create XUL or XHTML elements." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12142); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals(8)"
 ") (" "Can only create XUL or XHTML elements." ")"); do { MOZ_CrashSequence
(__null, 12142); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
12142             "Can only create XUL or XHTML elements.")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals
(8))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals
(8)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals(8)"
 " (" "Can only create XUL or XHTML elements." ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12142); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nodeInfo->NamespaceEquals(3) || nodeInfo->NamespaceEquals(8)"
 ") (" "Can only create XUL or XHTML elements." ")"); do { MOZ_CrashSequence
(__null, 12142); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
12143 
12144  nsAtom* name = nodeInfo->NameAtom();
12145  bool isCustomElementName = false;
12146  const Maybe<const nsHTMLTag>& tag = nodeInfo->HTMLTag();
12147  if (tag.isSome()) {
3
←
Assuming the condition is false→
4
←
Taking false branch→
12148    MOZ_ASSERT(nodeInfo->NamespaceEquals(kNameSpaceID_XHTML))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(nodeInfo->NamespaceEquals(3))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(nodeInfo->NamespaceEquals
(3)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("nodeInfo->NamespaceEquals(3)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12148); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nodeInfo->NamespaceEquals(3)"
 ")"); do { MOZ_CrashSequence(__null, 12148); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
12149    isCustomElementName =
12150        (*tag == eHTMLTag_userdefined &&
12151         nsContentUtils::IsCustomElementName(name, kNameSpaceID_XHTML3));
12152  } else {
12153    MOZ_ASSERT(nodeInfo->NamespaceEquals(kNameSpaceID_XUL))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(nodeInfo->NamespaceEquals(8))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(nodeInfo->NamespaceEquals
(8)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("nodeInfo->NamespaceEquals(8)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12153); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nodeInfo->NamespaceEquals(8)"
 ")"); do { MOZ_CrashSequence(__null, 12153); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
5
←
Taking false branch→
6
←
Loop condition is false.  Exiting loop→
12154    if (aIsAtom) {
7
←
Assuming 'aIsAtom' is null→
8
←
Taking false branch→
12155      // Make sure the customized built-in element to be constructed confirms
12156      // to our naming requirement, i.e. [is] must be a dashed name and
12157      // the tag name must not.
12158      // if so, set isCustomElementName to false to kick off all the logics
12159      // that pick up aIsAtom.
12160      if (nsContentUtils::IsNameWithDash(aIsAtom) &&
12161          !nsContentUtils::IsNameWithDash(name)) {
12162        isCustomElementName = false;
12163      } else {
12164        isCustomElementName =
12165            nsContentUtils::IsCustomElementName(name, kNameSpaceID_XUL8);
12166      }
12167    } else {
12168      isCustomElementName =
12169          nsContentUtils::IsCustomElementName(name, kNameSpaceID_XUL8);
12170    }
12171  }
12172 
12173  nsAtom* tagAtom = nodeInfo->NameAtom();
12174  nsAtom* typeAtom = nullptr;
12175  bool isCustomElement = isCustomElementName8.1
'isCustomElementName' is true
8.1
'isCustomElementName' is true
 || aIsAtom;
12176  if (isCustomElement8.2
'isCustomElement' is true
8.2
'isCustomElement' is true
) {
12177    typeAtom = isCustomElementName9.1
'isCustomElementName' is true
9.1
'isCustomElementName' is true
 ? tagAtom : aIsAtom;
9
←
Taking true branch→
10
←
'?' condition is true→
12178  }
12179 
12180  MOZ_ASSERT_IF(aDefinition, isCustomElement)do { if (aDefinition) { do { static_assert( mozilla::detail::
AssertionConditionType<decltype(isCustomElement)>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(isCustomElement))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("isCustomElement", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12180); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isCustomElement"
 ")"); do { MOZ_CrashSequence(__null, 12180); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false); } } while
 (false);
11
←
Assuming 'aDefinition' is non-null→
12
←
Taking true branch→
13
←
Taking false branch→
14
←
Loop condition is false.  Exiting loop→
15
←
Loop condition is false.  Exiting loop→
12181 
12182  // 3. "Let definition be the result of looking up a custom element definition
12183  //    given registry, namespace, localName, and is."
12184  RefPtr<CustomElementDefinition> definition = aDefinition;
12185  if (isCustomElement15.1
'isCustomElement' is true
15.1
'isCustomElement' is true
 && !definition) {
12186    MOZ_ASSERT(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName()))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName
()))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(nodeInfo->NameAtom()->Equals(nodeInfo->LocalName
())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("nodeInfo->NameAtom()->Equals(nodeInfo->LocalName())"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12186); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "nodeInfo->NameAtom()->Equals(nodeInfo->LocalName())"
 ")"); do { MOZ_CrashSequence(__null, 12186); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
12187    // When a custom element registry is provided (e.g. from fragment parsing
12188    // with a scoped registry), use it for definition lookup.
12189    if (aCustomElementRegistry.isSome()) {
12190      if (RefPtr<CustomElementRegistry> registry =
12191              aCustomElementRegistry.value()) {
12192        definition = registry->LookupCustomElementDefinition(
12193            nodeInfo->NameAtom(), nodeInfo->NamespaceID(), typeAtom);
12194      }
12195      // If registry is explicitly null, definition stays null (no upgrade).
12196    } else {
12197      definition = nsContentUtils::LookupCustomElementDefinition(
12198          nodeInfo->GetDocument(), nodeInfo->NameAtom(),
12199          nodeInfo->NamespaceID(), typeAtom);
12200    }
12201  }
12202 
12203  /*
12204   * Synchronous custom elements flag is determined by 3 places in spec,
12205   * 1) create an element for a token, the flag is determined by
12206   *    "will execute script" which is not originally created
12207   *    for the HTML fragment parsing algorithm.
12208   * 2) createElement and createElementNS, the flag is the same as
12209   *    NOT_FROM_PARSER.
12210   * 3) clone a node, our implementation will not go into this function.
12211   * For the unset case which is non-synchronous only applied for
12212   * inner/outerHTML.
12213   */
12214  bool synchronousCustomElements =
12215      definition && aFromParser != dom::FROM_PARSER_FRAGMENT;
16
←
Assuming 'aFromParser' is not equal to FROM_PARSER_FRAGMENT→
12216  auto setRegistryOnExit = MakeScopeExit([&]() {
17
←
Calling 'MakeScopeExit<(lambda at /root/firefox-clang/dom/base/nsContentUtils.cpp:12216:42)>'→
19
←
Returning from 'MakeScopeExit<(lambda at /root/firefox-clang/dom/base/nsContentUtils.cpp:12216:42)>'→
12217    if (!*aResult ||
12218        !StaticPrefs::dom_scoped_custom_element_registries_enabled() ||
12219        synchronousCustomElements) {
12220      return;
12221    }
12222    if (aCustomElementRegistry.isSome()) {
12223      RefPtr<CustomElementRegistry> registry = aCustomElementRegistry.value();
12224      if (registry) {
12225        (*aResult)->SetCustomElementRegistry(registry);
12226      } else {
12227        (*aResult)->SetNullCustomElementRegistry();
12228      }
12229    } else {
12230      Document* doc = (*aResult)->OwnerDoc();
12231      if (CustomElementRegistry* globalRegistry =
12232              doc->GetEffectiveGlobalCustomElementRegistry()) {
12233        (*aResult)->SetCustomElementRegistry(globalRegistry);
12234      }
12235    }
12236  });
12237 
12238  // It might be a problem that parser synchronously calls constructor, so
12239  // filed bug 1378079 to figure out what we should do for parser case.
12240  if (definition) {
20
←
Taking true branch→
12241    // Per discussion in https://github.com/w3c/webcomponents/issues/635,
12242    // use entry global in those places that are called from JS APIs and use
12243    // the node document's global object if it is called from parser.
12244    nsIGlobalObject* global;
12245    if (aFromParser == dom::NOT_FROM_PARSER) {
21
←
Assuming 'aFromParser' is equal to NOT_FROM_PARSER→
22
←
Taking true branch→
12246      global = GetEntryGlobal();
12247 
12248      // Documents created from the PrototypeDocumentSink always use
12249      // NOT_FROM_PARSER for non-XUL elements. We can get the global from the
12250      // document in that case.
12251      if (!global) {
23
←
Assuming 'global' is non-null→
24
←
Taking false branch→
12252        Document* doc = nodeInfo->GetDocument();
12253        if (doc && doc->LoadedFromPrototype()) {
12254          global = doc->GetScopeObject();
12255        }
12256      }
12257    } else {
12258      global = nodeInfo->GetDocument()->GetScopeObject();
12259    }
12260    if (!global24.1
'global' is non-null
24.1
'global' is non-null
) {
25
←
Taking false branch→
12261      // In browser chrome code, one may have access to a document which
12262      // doesn't have scope object anymore.
12263      return NS_ERROR_FAILURE;
12264    }
12265 
12266    AutoAllowLegacyScriptExecution exemption;
12267    AutoEntryScript aes(global, "create custom elements");
12268    JSContext* cx = aes.cx();
12269    ErrorResult rv;
12270 
12271    // 4. "If definition is non-null, and definition's name is not equal to its
12272    //    local name (i.e., definition represents a customized built-in
12273    //    element):"
12274    if (definition->IsCustomBuiltIn()) {
26
←
Taking false branch→
12275      // 4.2. "Set result to the result of creating an element internal..."
12276      if (nodeInfo->NamespaceEquals(kNameSpaceID_XHTML3)) {
12277        *aResult =
12278            CreateHTMLElement(*tag, nodeInfo.forget(), aFromParser).take();
12279      } else {
12280        NS_IF_ADDREF(*aResult = nsXULElement::Construct(nodeInfo.forget()))ns_if_addref(*aResult = nsXULElement::Construct(nodeInfo.forget
()));
12281      }
12282      (*aResult)->SetCustomElementData(MakeUnique<CustomElementData>(typeAtom));
12283      if (synchronousCustomElements) {
12284        // 4.3. "If synchronousCustomElements is true, then run this step while
12285        //       catching any exceptions: Upgrade result using definition."
12286        CustomElementRegistry::Upgrade(*aResult, definition, rv);
12287        if (rv.MaybeSetPendingException(cx)) {
12288          aes.ReportException();
12289        }
12290      } else {
12291        // 4.4. "Otherwise, enqueue a custom element upgrade reaction given
12292        //       result and definition."
12293        nsContentUtils::EnqueueUpgradeReaction(*aResult, definition);
12294      }
12295 
12296      return NS_OK;
12297    }
12298 
12299    // 5. "Otherwise, if definition is non-null:"
12300    // 5.1. "If synchronousCustomElements is true:"
12301    if (synchronousCustomElements26.1
'synchronousCustomElements' is true
26.1
'synchronousCustomElements' is true
) {
27
←
Taking true branch→
12302      {
12303        // 5.1.1. "Let C be definition's constructor."
12304        CustomElementConstructor* constructor = definition->mConstructor;
12305 
12306        RefPtr<Document> doc = nodeInfo->GetDocument();
12307        DocGroup* docGroup = doc->GetDocGroup();
12308 
12309        // XXX: https://github.com/whatwg/dom/pull/1494
12310        // 5.1.2. Let previousRegistry be the surrounding agent's active
12311        //        custom element constructor map[C] with default null.
12312        // 5.1.3. Set the surrounding agent's active custom element constructor
12313        //        map[C] to registry.
12314        Maybe<DocGroup::AutoActiveConstructorRegistry>
12315            activeConstructorRegistry;
12316        if (StaticPrefs::dom_scoped_custom_element_registries_enabled() &&
28
←
Assuming the condition is false→
12317            constructor->CallableOrNull() && docGroup) {
12318          if (aCustomElementRegistry.isSome()) {
12319            activeConstructorRegistry.emplace(docGroup, constructor,
12320                                              aCustomElementRegistry.ref());
12321          } else {
12322            activeConstructorRegistry.emplace(
12323                docGroup, constructor,
12324                doc->GetEffectiveGlobalCustomElementRegistry());
12325          }
12326        }
12327 
12328        // 5.1.4. "Run these steps while catching any exceptions:
12329        DoCustomElementCreate(aResult, cx, doc, nodeInfo,
12330                              MOZ_KnownLive(definition->mConstructor)(definition->mConstructor), rv,
12331                              aFromParser);
12332 
12333        // 5.1.5. If previousRegistry is null, then remove the surrounding
12334        //        agent's active custom element constructor map[C]. Otherwise,
12335        //        set it back to previousRegistry.
12336        // 5.1.6. Otherwise, set the surrounding agent ’s active custom element
12337        //        constructor map[C] to previousRegistry.
12338        // (Handled by `activeRegistry`'s destructor during scope exit).
12339      }
12340 
12341      if (rv.MaybeSetPendingException(cx)) {
29
←
Taking true branch→
12342        // "If any of these steps threw an exception: ... Set result to the
12343        //  result of creating an element internal given document,
12344        //  HTMLUnknownElement..."
12345        if (nodeInfo->NamespaceEquals(kNameSpaceID_XHTML3)) {
30
←
Taking false branch→
12346          NS_IF_ADDREF(*aResult = NS_NewHTMLUnknownElement(nodeInfo.forget(),ns_if_addref(*aResult = NS_NewHTMLUnknownElement(nodeInfo.forget
(), aFromParser))
12347                                                           aFromParser))ns_if_addref(*aResult = NS_NewHTMLUnknownElement(nodeInfo.forget
(), aFromParser));
12348        } else {
12349          NS_IF_ADDREF(*aResult = nsXULElement::Construct(nodeInfo.forget()))ns_if_addref(*aResult = nsXULElement::Construct(nodeInfo.forget
()));
31
←
Assigning value→
12350        }
12351        (*aResult)->SetDefined(false);
32
←
Called C++ object pointer is null
12352        // Set the fallback element's registry even on failure.
12353        if (StaticPrefs::dom_scoped_custom_element_registries_enabled()) {
12354          if (aCustomElementRegistry.isSome()) {
12355            if (CustomElementRegistry* registry =
12356                    aCustomElementRegistry.ref()) {
12357              (*aResult)->SetCustomElementRegistry(registry);
12358            } else {
12359              (*aResult)->SetNullCustomElementRegistry();
12360            }
12361          }
12362        }
12363      } else if (*aResult && nodeInfo->GetPrefixAtom()) {
12364        // 5.1.3.9. Set result's namespace prefix to prefix.
12365        (*aResult)->SetNamespacePrefix(nodeInfo->GetPrefixAtom());
12366      }
12367      return NS_OK;
12368    }
12369 
12370    // 5.2. "Otherwise:"
12371    // 5.2.1. "Set result to the result of creating an element internal given
12372    //         document, HTMLElement, localName..."
12373    if (nodeInfo->NamespaceEquals(kNameSpaceID_XHTML3)) {
12374      NS_IF_ADDREF(*aResult =ns_if_addref(*aResult = NS_NewHTMLElement(nodeInfo.forget(), aFromParser
))
12375                       NS_NewHTMLElement(nodeInfo.forget(), aFromParser))ns_if_addref(*aResult = NS_NewHTMLElement(nodeInfo.forget(), aFromParser
));
12376    } else {
12377      NS_IF_ADDREF(*aResult = nsXULElement::Construct(nodeInfo.forget()))ns_if_addref(*aResult = nsXULElement::Construct(nodeInfo.forget
()));
12378    }
12379    (*aResult)->SetCustomElementData(
12380        MakeUnique<CustomElementData>(definition->mType));
12381    // 5.2.2. "Enqueue a custom element upgrade reaction given result and
12382    //         definition."
12383    nsContentUtils::EnqueueUpgradeReaction(*aResult, definition);
12384    return NS_OK;
12385  }
12386 
12387  // 6. "Otherwise:"
12388  // 6.1. "Let interface be the element interface for localName and namespace."
12389  // 6.2. "Set result to the result of creating an element internal..."
12390  if (nodeInfo->NamespaceEquals(kNameSpaceID_XHTML3)) {
12391    // Per the Custom Element specification, unknown tags that are valid
12392    // custom element names should be HTMLElement instead of
12393    // HTMLUnknownElement.
12394    if (isCustomElementName) {
12395      NS_IF_ADDREF(*aResult =ns_if_addref(*aResult = NS_NewHTMLElement(nodeInfo.forget(), aFromParser
))
12396                       NS_NewHTMLElement(nodeInfo.forget(), aFromParser))ns_if_addref(*aResult = NS_NewHTMLElement(nodeInfo.forget(), aFromParser
));
12397    } else {
12398      *aResult = CreateHTMLElement(*tag, nodeInfo.forget(), aFromParser).take();
12399    }
12400  } else {
12401    NS_IF_ADDREF(*aResult = nsXULElement::Construct(nodeInfo.forget()))ns_if_addref(*aResult = nsXULElement::Construct(nodeInfo.forget
()));
12402  }
12403 
12404  if (!*aResult) {
12405    return NS_ERROR_OUT_OF_MEMORY;
12406  }
12407 
12408  // 6.3. "If namespace is the HTML namespace, and either localName is a valid
12409  //       custom element name or is is non-null, then set result's custom
12410  //       element state to "undefined"."
12411  if (isCustomElement) {
12412    (*aResult)->SetCustomElementData(MakeUnique<CustomElementData>(typeAtom));
12413    if (aCustomElementRegistry.isSome()) {
12414      // When an explicit custom element registry is provided, register for
12415      // upgrade on that registry (if non-null), not the document's.
12416      if (CustomElementRegistry* registry = aCustomElementRegistry.ref()) {
12417        registry->RegisterCallbackUpgradeElement(*aResult, typeAtom);
12418      }
12419    } else {
12420      nsContentUtils::RegisterCallbackUpgradeElement(*aResult, typeAtom);
12421    }
12422  }
12423 
12424  // 7. "Return result."
12425  return NS_OK;
12426}
12427 
12428// https://html.spec.whatwg.org/#look-up-a-custom-element-registry
12429Maybe<RefPtr<CustomElementRegistry>> nsContentUtils::GetCustomElementRegistry(
12430    nsINode* aNode) {
12431  if (!aNode || !StaticPrefs::dom_scoped_custom_element_registries_enabled()) {
12432    return Nothing();
12433  }
12434  // 1. If node is an Element object, then return node's custom element
12435  //    registry.
12436  // 2. If node is a ShadowRoot object, then return node's custom element
12437  //    registry.
12438  // 3. If node is a Document object, then return node's custom element
12439  //    registry.
12440  // A node specifies its own registry only when its state is not Global (i.e.
12441  // scoped, or explicitly null). A Global-state node inherits the global
12442  // registry, which we report as Nothing() so callers can fall back to a
12443  // context registry when parsing into the node.
12444  CustomElementRegistryState state = CustomElementRegistryState::Global;
12445  if (aNode->IsElement()) {
12446    state = aNode->AsElement()->GetCustomElementRegistryState();
12447  } else if (ShadowRoot* shadowRoot = ShadowRoot::FromNode(aNode)) {
12448    state = shadowRoot->GetCustomElementRegistryState();
12449  } else if (aNode->IsDocument()) {
12450    if (!aNode->AsDocument()->HasScopedCustomElementRegistry()) {
12451      // 4. Return null (reported as Nothing(): inherit the global registry).
12452      return Nothing();
12453    }
12454    state = CustomElementRegistryState::Scoped;
12455  } else {
12456    // 4. Return null.
12457    return Nothing();
12458  }
12459  if (state == CustomElementRegistryState::Global) {
12460    return Nothing();
12461  }
12462  RefPtr<CustomElementRegistry> registry;
12463  if (aNode->IsElement()) {
12464    registry = aNode->AsElement()->GetCustomElementRegistry();
12465  } else if (ShadowRoot* shadowRoot = ShadowRoot::FromNode(aNode)) {
12466    registry = shadowRoot->GetCustomElementRegistry();
12467  } else {
12468    registry = aNode->AsDocument()->GetCustomElementRegistry();
12469  }
12470  return Some(std::move(registry));
12471}
12472 
12473/* https://html.spec.whatwg.org/#look-up-a-custom-element-definition */
12474CustomElementDefinition* nsContentUtils::LookupCustomElementDefinition(
12475    DocumentOrShadowRoot* aDoc, nsAtom* aNameAtom, uint32_t aNameSpaceID,
12476    nsAtom* aTypeAtom) {
12477  // 2. If namespace is not the HTML namespace, then return null.
12478  if (aNameSpaceID != kNameSpaceID_XUL8 && aNameSpaceID != kNameSpaceID_XHTML3) {
12479    return nullptr;
12480  }
12481 
12482  // 1. If registry is null, then return null.
12483  // TODO(keithamus): re-order for Scoped Registries
12484  RefPtr<CustomElementRegistry> registry = aDoc->GetCustomElementRegistry();
12485  if (!registry) {
12486    return nullptr;
12487  }
12488 
12489  // XXX: Steps 3-5 performed by
12490  // CustomElementRegistry::LookupCustomElementDefinition:
12491  // 3. If registry's custom element definition set contains an item with name
12492  //    and local name both equal to localName, then return that item.
12493  // 4. If registry's custom element definition set contains an item with name
12494  //    equal to is and local name equal to localName, then return that item.
12495  // 5. Return null.
12496  return registry->LookupCustomElementDefinition(aNameAtom, aNameSpaceID,
12497                                                 aTypeAtom);
12498}
12499 
12500/* static */
12501void nsContentUtils::RegisterCallbackUpgradeElement(Element* aElement,
12502                                                    nsAtom* aTypeName) {
12503  MOZ_ASSERT(aElement)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElement)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aElement))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aElement", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12503); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aElement" ")"
); do { MOZ_CrashSequence(__null, 12503); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
12504 
12505  CustomElementRegistry* registry = aElement->GetCustomElementRegistry();
12506  if (registry) {
12507    registry->RegisterCallbackUpgradeElement(aElement, aTypeName);
12508  }
12509}
12510 
12511/* static */
12512void nsContentUtils::RegisterUnresolvedElement(Element* aElement,
12513                                               nsAtom* aTypeName) {
12514  MOZ_ASSERT(aElement)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElement)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aElement))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aElement", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12514); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aElement" ")"
); do { MOZ_CrashSequence(__null, 12514); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
12515 
12516  CustomElementRegistry* registry = aElement->GetCustomElementRegistry();
12517  if (registry) {
12518    registry->RegisterUnresolvedElement(aElement, aTypeName);
12519  }
12520}
12521 
12522/* static */
12523void nsContentUtils::UnregisterUnresolvedElement(Element* aElement) {
12524  MOZ_ASSERT(aElement)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElement)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aElement))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aElement", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12524); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aElement" ")"
); do { MOZ_CrashSequence(__null, 12524); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
12525 
12526  nsAtom* typeAtom = aElement->GetCustomElementData()->GetCustomElementType();
12527  CustomElementRegistry* registry = aElement->GetCustomElementRegistry();
12528  if (registry) {
12529    registry->UnregisterUnresolvedElement(aElement, typeAtom);
12530  }
12531}
12532 
12533/* static */
12534void nsContentUtils::EnqueueUpgradeReaction(
12535    Element* aElement, CustomElementDefinition* aDefinition) {
12536  MOZ_ASSERT(aElement)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElement)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aElement))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aElement", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12536); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aElement" ")"
); do { MOZ_CrashSequence(__null, 12536); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
12537 
12538  Document* doc = aElement->OwnerDoc();
12539 
12540  // No DocGroup means no custom element reactions stack.
12541  if (!doc->GetDocGroup()) {
12542    return;
12543  }
12544 
12545  CustomElementReactionsStack* stack =
12546      doc->GetDocGroup()->CustomElementReactionsStack();
12547  stack->EnqueueUpgradeReaction(aElement, aDefinition);
12548}
12549 
12550/* static */
12551void nsContentUtils::EnqueueLifecycleCallback(
12552    ElementCallbackType aType, Element* aCustomElement,
12553    const LifecycleCallbackArgs& aArgs, CustomElementDefinition* aDefinition) {
12554  // No DocGroup means no custom element reactions stack.
12555  if (!aCustomElement->OwnerDoc()->GetDocGroup()) {
12556    return;
12557  }
12558 
12559  CustomElementRegistry::EnqueueLifecycleCallback(aType, aCustomElement, aArgs,
12560                                                  aDefinition);
12561}
12562 
12563/* static */
12564CustomElementFormValue nsContentUtils::ConvertToCustomElementFormValue(
12565    const Nullable<OwningFileOrUSVStringOrFormData>& aState) {
12566  if (aState.IsNull()) {
12567    return void_t{};
12568  }
12569  const auto& state = aState.Value();
12570  if (state.IsFile()) {
12571    RefPtr<BlobImpl> impl = state.GetAsFile()->Impl();
12572    return {std::move(impl)};
12573  }
12574  if (state.IsUSVString()) {
12575    return state.GetAsUSVString();
12576  }
12577  return state.GetAsFormData()->ConvertToCustomElementFormValue();
12578}
12579 
12580/* static */
12581Nullable<OwningFileOrUSVStringOrFormData>
12582nsContentUtils::ExtractFormAssociatedCustomElementValue(
12583    nsIGlobalObject* aGlobal,
12584    const mozilla::dom::CustomElementFormValue& aCEValue) {
12585  MOZ_ASSERT(aGlobal)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aGlobal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aGlobal))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aGlobal", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12585); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aGlobal" ")"
); do { MOZ_CrashSequence(__null, 12585); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
12586 
12587  OwningFileOrUSVStringOrFormData value;
12588  switch (aCEValue.type()) {
12589    case CustomElementFormValue::TBlobImpl: {
12590      RefPtr<File> file = File::Create(aGlobal, aCEValue.get_BlobImpl());
12591      if (NS_WARN_IF(!file)NS_warn_if_impl(!file, "!file", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12591)) {
12592        return {};
12593      }
12594      value.SetAsFile() = file;
12595    } break;
12596 
12597    case CustomElementFormValue::TnsString:
12598      value.SetAsUSVString() = aCEValue.get_nsString();
12599      break;
12600 
12601    case CustomElementFormValue::TArrayOfFormDataTuple: {
12602      const auto& array = aCEValue.get_ArrayOfFormDataTuple();
12603      auto formData = MakeRefPtr<FormData>();
12604 
12605      for (auto i = 0ul; i < array.Length(); ++i) {
12606        const auto& item = array.ElementAt(i);
12607        switch (item.value().type()) {
12608          case IPCFormDataValue::TnsString:
12609            formData->AddNameValuePair(item.name(),
12610                                       item.value().get_nsString());
12611            break;
12612 
12613          case IPCFormDataValue::TBlobImpl: {
12614            auto blobImpl = item.value().get_BlobImpl();
12615            RefPtr<Blob> blob = Blob::Create(aGlobal, blobImpl);
12616            formData->AddNameBlobPair(item.name(), blob);
12617          } break;
12618 
12619          default:
12620            continue;
12621        }
12622      }
12623 
12624      value.SetAsFormData() = formData;
12625    } break;
12626    case CustomElementFormValue::Tvoid_t:
12627      return {};
12628    default:
12629      NS_WARNING("Invalid CustomElementContentData type!")NS_DebugBreak(NS_DEBUG_WARNING, "Invalid CustomElementContentData type!"
, nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 12629);
12630      return {};
12631  }
12632  return value;
12633}
12634 
12635/* static */
12636void nsContentUtils::AppendDocumentLevelNativeAnonymousContentTo(
12637    Document* aDocument, nsTArray<nsIContent*>& aElements) {
12638  MOZ_ASSERT(aDocument)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aDocument)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aDocument))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aDocument", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12638); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aDocument"
 ")"); do { MOZ_CrashSequence(__null, 12638); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
12639#ifdef DEBUG1
12640  size_t oldLength = aElements.Length();
12641#endif
12642 
12643  if (PresShell* presShell = aDocument->GetPresShell()) {
12644    if (ScrollContainerFrame* rootScrollContainerFrame =
12645            presShell->GetRootScrollContainerFrame()) {
12646      rootScrollContainerFrame->AppendAnonymousContentTo(aElements, 0);
12647    }
12648    if (nsCanvasFrame* canvasFrame = presShell->GetCanvasFrame()) {
12649      canvasFrame->AppendAnonymousContentTo(aElements, 0);
12650    }
12651  }
12652 
12653  if (auto* el = aDocument->GetCustomContentContainer()) {
12654    aElements.AppendElement(el);
12655  }
12656 
12657#ifdef DEBUG1
12658  for (size_t i = oldLength; i < aElements.Length(); i++) {
12659    MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent)"
 " (" "Someone here has lied, or missed to flag the node" ")"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12661); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent)"
 ") (" "Someone here has lied, or missed to flag the node" ")"
); do { MOZ_CrashSequence(__null, 12661); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
12660        aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent)"
 " (" "Someone here has lied, or missed to flag the node" ")"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12661); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent)"
 ") (" "Someone here has lied, or missed to flag the node" ")"
); do { MOZ_CrashSequence(__null, 12661); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false)
12661        "Someone here has lied, or missed to flag the node")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent
))>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent)"
 " (" "Someone here has lied, or missed to flag the node" ")"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12661); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aElements[i]->GetProperty(nsGkAtoms::docLevelNativeAnonymousContent)"
 ") (" "Someone here has lied, or missed to flag the node" ")"
); do { MOZ_CrashSequence(__null, 12661); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
12662  }
12663#endif
12664}
12665 
12666static void AppendNativeAnonymousChildrenFromFrame(nsIFrame* aFrame,
12667                                                   nsTArray<nsIContent*>& aKids,
12668                                                   uint32_t aFlags) {
12669  if (nsIAnonymousContentCreator* ac = do_QueryFrame(aFrame)) {
12670    ac->AppendAnonymousContentTo(aKids, aFlags);
12671  }
12672}
12673 
12674/* static */
12675void nsContentUtils::AppendNativeAnonymousChildren(const nsIContent* aContent,
12676                                                   nsTArray<nsIContent*>& aKids,
12677                                                   uint32_t aFlags) {
12678  if (aContent->MayHaveAnonymousChildren()) {
12679    if (nsIFrame* primaryFrame = aContent->GetPrimaryFrame()) {
12680      // NAC created by the element's primary frame.
12681      AppendNativeAnonymousChildrenFromFrame(primaryFrame, aKids, aFlags);
12682 
12683      // NAC created by any other non-primary frames for the element.
12684      AutoTArray<nsIFrame::OwnedAnonBox, 8> ownedAnonBoxes;
12685      primaryFrame->AppendOwnedAnonBoxes(ownedAnonBoxes);
12686      for (nsIFrame::OwnedAnonBox& box : ownedAnonBoxes) {
12687        MOZ_ASSERT(box.mAnonBoxFrame->GetContent() == aContent)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(box.mAnonBoxFrame->GetContent() == aContent)>::
isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(box.mAnonBoxFrame->GetContent() == aContent))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("box.mAnonBoxFrame->GetContent() == aContent"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12687); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "box.mAnonBoxFrame->GetContent() == aContent"
 ")"); do { MOZ_CrashSequence(__null, 12687); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
12688        AppendNativeAnonymousChildrenFromFrame(box.mAnonBoxFrame, aKids,
12689                                               aFlags);
12690      }
12691    }
12692 
12693    // View transition pseudos.
12694    if (aContent->IsRootElement()) {
12695      if (auto* vt = aContent->OwnerDoc()->GetActiveViewTransition()) {
12696        if (auto* root = vt->GetSnapshotContainingBlock()) {
12697          aKids.AppendElement(root);
12698        }
12699      }
12700    }
12701 
12702    // Get manually created NAC (editor resize handles, etc.).
12703    if (auto nac = static_cast<ManualNACArray*>(
12704            aContent->GetProperty(nsGkAtoms::manualNACProperty))) {
12705      aKids.AppendElements(*nac);
12706    }
12707  }
12708 
12709  // The root scroll frame is not the primary frame of the root element.
12710  // Detect and handle this case.
12711  if (!(aFlags & nsIContent::eSkipDocumentLevelNativeAnonymousContent) &&
12712      aContent->IsRootElement()) {
12713    AppendDocumentLevelNativeAnonymousContentTo(aContent->OwnerDoc(), aKids);
12714  }
12715}
12716 
12717bool nsContentUtils::IsImageAvailable(nsIContent* aLoadingNode, nsIURI* aURI,
12718                                      nsIPrincipal* aDefaultTriggeringPrincipal,
12719                                      CORSMode aCORSMode) {
12720  nsCOMPtr<nsIPrincipal> triggeringPrincipal;
12721  QueryTriggeringPrincipal(aLoadingNode, aDefaultTriggeringPrincipal,
12722                           getter_AddRefs(triggeringPrincipal));
12723  MOZ_ASSERT(triggeringPrincipal)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(triggeringPrincipal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(triggeringPrincipal))), 0)))
 { do { } while (false); MOZ_ReportAssertionFailure("triggeringPrincipal"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12723); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "triggeringPrincipal" ")"); do { MOZ_CrashSequence
(__null, 12723); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
12724 
12725  Document* doc = aLoadingNode->OwnerDoc();
12726  return IsImageAvailable(aURI, triggeringPrincipal, aCORSMode, doc);
12727}
12728 
12729bool nsContentUtils::IsImageAvailable(nsIURI* aURI,
12730                                      nsIPrincipal* aTriggeringPrincipal,
12731                                      CORSMode aCORSMode, Document* aDoc) {
12732  imgLoader* imgLoader = GetImgLoaderForDocument(aDoc);
12733  return imgLoader->IsImageAvailable(aURI, aTriggeringPrincipal, aCORSMode,
12734                                     aDoc);
12735}
12736 
12737/* static */
12738bool nsContentUtils::QueryTriggeringPrincipal(
12739    nsIContent* aLoadingNode, nsIPrincipal* aDefaultPrincipal,
12740    nsIPrincipal** aTriggeringPrincipal) {
12741  MOZ_ASSERT(aLoadingNode)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aLoadingNode)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aLoadingNode))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("aLoadingNode", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12741); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aLoadingNode"
 ")"); do { MOZ_CrashSequence(__null, 12741); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
12742  MOZ_ASSERT(aTriggeringPrincipal)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aTriggeringPrincipal)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aTriggeringPrincipal))), 0))
) { do { } while (false); MOZ_ReportAssertionFailure("aTriggeringPrincipal"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12742); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aTriggeringPrincipal" ")"); do { MOZ_CrashSequence
(__null, 12742); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
12743 
12744  bool result = false;
12745  nsCOMPtr<nsIPrincipal> loadingPrincipal = aDefaultPrincipal;
12746  if (!loadingPrincipal) {
12747    loadingPrincipal = aLoadingNode->NodePrincipal();
12748  }
12749 
12750  // If aLoadingNode is content, bail out early.
12751  if (!aLoadingNode->NodePrincipal()->IsSystemPrincipal()) {
12752    loadingPrincipal.forget(aTriggeringPrincipal);
12753    return result;
12754  }
12755 
12756  nsAutoString loadingStr;
12757  if (aLoadingNode->IsElement()) {
12758    aLoadingNode->AsElement()->GetAttr(
12759        kNameSpaceID_None, nsGkAtoms::triggeringprincipal, loadingStr);
12760  }
12761 
12762  // Fall back if 'triggeringprincipal' isn't specified,
12763  if (loadingStr.IsEmpty()) {
12764    loadingPrincipal.forget(aTriggeringPrincipal);
12765    return result;
12766  }
12767 
12768  nsCString binary;
12769  nsCOMPtr<nsIPrincipal> serializedPrin =
12770      BasePrincipal::FromJSON(NS_ConvertUTF16toUTF8(loadingStr));
12771  if (serializedPrin) {
12772    result = true;
12773    serializedPrin.forget(aTriggeringPrincipal);
12774  }
12775 
12776  if (!result) {
12777    // Fallback if the deserialization is failed.
12778    loadingPrincipal.forget(aTriggeringPrincipal);
12779  }
12780 
12781  return result;
12782}
12783 
12784/* static */
12785void nsContentUtils::GetContentPolicyTypeForUIImageLoading(
12786    nsIContent* aLoadingNode, nsIPrincipal** aTriggeringPrincipal,
12787    nsContentPolicyType& aContentPolicyType, uint64_t* aRequestContextID) {
12788  MOZ_ASSERT(aRequestContextID)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aRequestContextID)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aRequestContextID))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("aRequestContextID"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12788); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aRequestContextID" ")"); do { MOZ_CrashSequence
(__null, 12788); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
12789 
12790  bool result = QueryTriggeringPrincipal(aLoadingNode, aTriggeringPrincipal);
12791  if (result) {
12792    // Set the content policy type to TYPE_INTERNAL_IMAGE_FAVICON for
12793    // indicating it's a favicon loading.
12794    aContentPolicyType = nsIContentPolicy::TYPE_INTERNAL_IMAGE_FAVICON;
12795 
12796    nsAutoString requestContextID;
12797    if (aLoadingNode->IsElement()) {
12798      aLoadingNode->AsElement()->GetAttr(
12799          kNameSpaceID_None, nsGkAtoms::requestcontextid, requestContextID);
12800    }
12801    nsresult rv;
12802    int64_t val = requestContextID.ToInteger64(&rv);
12803    *aRequestContextID = NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))) ? val : 0;
12804  } else {
12805    aContentPolicyType = nsIContentPolicy::TYPE_INTERNAL_IMAGE;
12806  }
12807}
12808 
12809/* static */
12810nsresult nsContentUtils::CreateJSValueFromSequenceOfObject(
12811    JSContext* aCx, const Sequence<JSObject*>& aTransfer,
12812    JS::MutableHandle<JS::Value> aValue) {
12813  if (aTransfer.IsEmpty()) {
12814    return NS_OK;
12815  }
12816 
12817  JS::Rooted<JSObject*> array(aCx, JS::NewArrayObject(aCx, aTransfer.Length()));
12818  if (!array) {
12819    return NS_ERROR_OUT_OF_MEMORY;
12820  }
12821 
12822  for (uint32_t i = 0; i < aTransfer.Length(); ++i) {
12823    JS::Rooted<JSObject*> object(aCx, aTransfer[i]);
12824    if (!object) {
12825      continue;
12826    }
12827 
12828    if (NS_WARN_IF(NS_warn_if_impl(!JS_DefineElement(aCx, array, i, object, JSPROP_ENUMERATE
), "!JS_DefineElement(aCx, array, i, object, JSPROP_ENUMERATE)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12829)
12829            !JS_DefineElement(aCx, array, i, object, JSPROP_ENUMERATE))NS_warn_if_impl(!JS_DefineElement(aCx, array, i, object, JSPROP_ENUMERATE
), "!JS_DefineElement(aCx, array, i, object, JSPROP_ENUMERATE)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 12829)) {
12830      return NS_ERROR_OUT_OF_MEMORY;
12831    }
12832  }
12833 
12834  aValue.setObject(*array);
12835  return NS_OK;
12836}
12837 
12838/* static */
12839void nsContentUtils::StructuredClone(JSContext* aCx, nsIGlobalObject* aGlobal,
12840                                     JS::Handle<JS::Value> aValue,
12841                                     const StructuredSerializeOptions& aOptions,
12842                                     JS::MutableHandle<JS::Value> aRetval,
12843                                     ErrorResult& aError) {
12844  JS::Rooted<JS::Value> transferArray(aCx, JS::UndefinedValue());
12845  aError = nsContentUtils::CreateJSValueFromSequenceOfObject(
12846      aCx, aOptions.mTransfer, &transferArray);
12847  if (NS_WARN_IF(aError.Failed())NS_warn_if_impl(aError.Failed(), "aError.Failed()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12847)) {
12848    return;
12849  }
12850 
12851  JS::CloneDataPolicy clonePolicy;
12852  // We are definitely staying in the same agent cluster.
12853  clonePolicy.allowIntraClusterClonableSharedObjects();
12854  if (aGlobal->IsSharedMemoryAllowed()) {
12855    clonePolicy.allowSharedMemoryObjects();
12856  }
12857 
12858  // 2.7.10 Structured cloning API
12859  // Step 1: Let serialized be
12860  //   ? StructuredSerializeWithTransfer(value, options["transfer"])
12861  StructuredCloneHolder holder(StructuredCloneHolder::CloningSupported,
12862                               StructuredCloneHolder::TransferringSupported,
12863                               JS::StructuredCloneScope::SameProcess);
12864  holder.Write(aCx, aValue, transferArray, clonePolicy, aError);
12865  if (NS_WARN_IF(aError.Failed())NS_warn_if_impl(aError.Failed(), "aError.Failed()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12865)) {
12866    return;
12867  }
12868 
12869  // Step 2: Let deserializeRecord be
12870  //   ? StructuredDeserializeWithTransfer(serialized, this's relevant realm).
12871  JSAutoRealm ar(aCx, aGlobal->GetGlobalJSObject());
12872  holder.Read(aCx, aRetval, clonePolicy, aError);
12873  if (NS_WARN_IF(aError.Failed())NS_warn_if_impl(aError.Failed(), "aError.Failed()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 12873)) {
12874    return;
12875  }
12876 
12877  // Step 3: Return deserializeRecord.[[Deserialized]].
12878  //   (discarding deserializeRecord.[[TransferredValues]])
12879  nsTArray<RefPtr<MessagePort>> ports = holder.TakeTransferredPorts();
12880  (void)ports;
12881}
12882 
12883/* static */
12884bool nsContentUtils::ShouldBlockReservedKeys(WidgetKeyboardEvent* aKeyEvent) {
12885  nsCOMPtr<nsIPrincipal> principal;
12886  RefPtr<Element> targetElement =
12887      Element::FromEventTargetOrNull(aKeyEvent->mOriginalTarget);
12888  nsCOMPtr<nsIBrowser> targetBrowser;
12889  if (targetElement) {
12890    targetBrowser = targetElement->AsBrowser();
12891  }
12892  bool isRemoteBrowser = false;
12893  if (targetBrowser) {
12894    targetBrowser->GetIsRemoteBrowser(&isRemoteBrowser);
12895  }
12896 
12897  if (isRemoteBrowser) {
12898    targetBrowser->GetContentPrincipal(getter_AddRefs(principal));
12899    return principal ? nsContentUtils::IsSitePermDeny(principal, "shortcuts"_ns)
12900                     : false;
12901  }
12902 
12903  if (targetElement) {
12904    Document* doc = targetElement->GetUncomposedDoc();
12905    if (doc) {
12906      RefPtr<WindowContext> wc = doc->GetWindowContext();
12907      if (wc) {
12908        return wc->TopWindowContext()->GetShortcutsPermission() ==
12909               nsIPermissionManager::DENY_ACTION;
12910      }
12911    }
12912  }
12913 
12914  return false;
12915}
12916 
12917/**
12918 * Checks whether the given type is a supported document type for
12919 * loading within the nsObjectLoadingContent specified by aContent.
12920 *
12921 * NOTE Helper method for nsContentUtils::HtmlObjectContentTypeForMIMEType.
12922 * NOTE Does not take content policy or capabilities into account
12923 */
12924static bool HtmlObjectContentSupportsDocument(const nsCString& aMimeType) {
12925  nsCOMPtr<nsIWebNavigationInfo> info(
12926      do_GetService(NS_WEBNAVIGATION_INFO_CONTRACTID"@mozilla.org/webnavigation-info;1"));
12927  if (!info) {
12928    return false;
12929  }
12930 
12931  uint32_t supported;
12932  nsresult rv = info->IsTypeSupported(aMimeType, &supported);
12933 
12934  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
12935    return false;
12936  }
12937 
12938  if (supported != nsIWebNavigationInfo::UNSUPPORTED) {
12939    return true;
12940  }
12941 
12942  // Try a stream converter
12943  // NOTE: We treat any type we can convert from as a supported type. If a
12944  // type is not actually supported, the URI loader will detect that and
12945  // return an error, and we'll fallback.
12946  nsCOMPtr<nsIStreamConverterService> convServ =
12947      do_GetService("@mozilla.org/streamConverters;1");
12948  bool canConvert = false;
12949  if (convServ) {
12950    rv = convServ->CanConvert(aMimeType.get(), "*/*", &canConvert);
12951  }
12952  return NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1))) && canConvert;
12953}
12954 
12955/* static */
12956uint32_t nsContentUtils::HtmlObjectContentTypeForMIMEType(
12957    const nsCString& aMIMEType, bool aIsSandboxed) {
12958  if (aMIMEType.IsEmpty()) {
12959    return nsIObjectLoadingContent::TYPE_FALLBACK;
12960  }
12961 
12962  if (imgLoader::SupportImageWithMimeType(aMIMEType)) {
12963    return nsIObjectLoadingContent::TYPE_DOCUMENT;
12964  }
12965 
12966  // Faking support of the PDF content as a document for EMBED tags when the
12967  // internal PDF viewer or the embedded PDF fallback is enabled.
12968  if (aMIMEType.LowerCaseEqualsLiteral(APPLICATION_PDF"application/pdf") &&
12969      (IsPDFJSEnabled() || StaticPrefs::pdfjs_embedFallback())) {
12970    // Sandboxed iframes are just never allowed to display plugins. In the
12971    // modern world, this just means "application/pdf".
12972    return aIsSandboxed ? nsIObjectLoadingContent::TYPE_FALLBACK
12973                        : nsIObjectLoadingContent::TYPE_DOCUMENT;
12974  }
12975 
12976  if (HtmlObjectContentSupportsDocument(aMIMEType)) {
12977    return nsIObjectLoadingContent::TYPE_DOCUMENT;
12978  }
12979 
12980  return nsIObjectLoadingContent::TYPE_FALLBACK;
12981}
12982 
12983/* static */
12984bool nsContentUtils::IsLocalRefURL(const nsAString& aString) {
12985  return !aString.IsEmpty() && aString[0] == '#';
12986}
12987 
12988// We use only 53 bits for the ID so that it can be converted to and from a JS
12989// value without loss of precision. The upper bits of the ID hold the process
12990// ID. The lower bits identify the object itself.
12991static constexpr uint64_t kIdTotalBits = 53;
12992static constexpr uint64_t kIdProcessBits = 22;
12993static constexpr uint64_t kIdBits = kIdTotalBits - kIdProcessBits;
12994 
12995/* static */
12996uint64_t nsContentUtils::GenerateProcessSpecificId(uint64_t aId) {
12997  uint64_t processId = 0;
12998  if (XRE_IsContentProcess()) {
12999    ContentChild* cc = ContentChild::GetSingleton();
13000    processId = cc->GetID();
13001  }
13002 
13003  MOZ_RELEASE_ASSERT(processId < (uint64_t(1) << kIdProcessBits))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(processId < (uint64_t(1) << kIdProcessBits)
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!(processId < (uint64_t(1) << kIdProcessBits)
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"processId < (uint64_t(1) << kIdProcessBits)", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13003); AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "processId < (uint64_t(1) << kIdProcessBits)"
 ")"); do { MOZ_CrashSequence(__null, 13003); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13004  uint64_t processBits = processId & ((uint64_t(1) << kIdProcessBits) - 1);
13005 
13006  uint64_t id = aId;
13007  MOZ_RELEASE_ASSERT(id < (uint64_t(1) << kIdBits))do { static_assert( mozilla::detail::AssertionConditionType<
decltype(id < (uint64_t(1) << kIdBits))>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(id < (uint64_t(1) << kIdBits)))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("id < (uint64_t(1) << kIdBits)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13007); AnnotateMozCrashReason
("MOZ_RELEASE_ASSERT" "(" "id < (uint64_t(1) << kIdBits)"
 ")"); do { MOZ_CrashSequence(__null, 13007); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13008  uint64_t bits = id & ((uint64_t(1) << kIdBits) - 1);
13009 
13010  return (processBits << kIdBits) | bits;
13011}
13012 
13013/* static */
13014std::tuple<uint64_t, uint64_t> nsContentUtils::SplitProcessSpecificId(
13015    uint64_t aId) {
13016  return {aId >> kIdBits, aId & ((uint64_t(1) << kIdBits) - 1)};
13017}
13018 
13019// Next process-local Tab ID.
13020static uint64_t gNextTabId = 0;
13021 
13022/* static */
13023uint64_t nsContentUtils::GenerateTabId() {
13024  return GenerateProcessSpecificId(++gNextTabId);
13025}
13026 
13027// Next process-local Browser ID.
13028static uint64_t gNextBrowserId = 0;
13029 
13030/* static */
13031uint64_t nsContentUtils::GenerateBrowserId() {
13032  return GenerateProcessSpecificId(++gNextBrowserId);
13033}
13034 
13035// Next process-local Browsing Context ID.
13036static uint64_t gNextBrowsingContextId = 0;
13037 
13038/* static */
13039uint64_t nsContentUtils::GenerateBrowsingContextId() {
13040  return GenerateProcessSpecificId(++gNextBrowsingContextId);
13041}
13042 
13043// Next process-local Window ID.
13044static uint64_t gNextWindowId = 0;
13045 
13046/* static */
13047uint64_t nsContentUtils::GenerateWindowId() {
13048  return GenerateProcessSpecificId(++gNextWindowId);
13049}
13050 
13051// Next process-local load.
13052static Atomic<uint64_t> gNextLoadIdentifier(0);
13053 
13054/* static */
13055uint64_t nsContentUtils::GenerateLoadIdentifier() {
13056  return GenerateProcessSpecificId(++gNextLoadIdentifier);
13057}
13058 
13059/* static */
13060bool nsContentUtils::GetUserIsInteracting() {
13061  return UserInteractionObserver::sUserActive;
13062}
13063 
13064/* static */
13065bool nsContentUtils::GetSourceMapURL(nsIHttpChannel* aChannel,
13066                                     nsACString& aResult) {
13067  nsresult rv = aChannel->GetResponseHeader("SourceMap"_ns, aResult);
13068  if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) {
13069    rv = aChannel->GetResponseHeader("X-SourceMap"_ns, aResult);
13070  }
13071  return NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)));
13072}
13073 
13074/* static */
13075bool nsContentUtils::IsMessageInputEvent(const IPC::Message& aMsg) {
13076  if ((aMsg.type() & mozilla::dom::PBrowser::PBrowserStart) ==
13077      mozilla::dom::PBrowser::PBrowserStart) {
13078    switch (aMsg.type()) {
13079      case mozilla::dom::PBrowser::Msg_RealMouseMoveEvent__ID:
13080      case mozilla::dom::PBrowser::Msg_RealMouseButtonEvent__ID:
13081      case mozilla::dom::PBrowser::Msg_RealMouseEnterExitWidgetEvent__ID:
13082      case mozilla::dom::PBrowser::Msg_RealKeyEvent__ID:
13083      case mozilla::dom::PBrowser::Msg_MouseWheelEvent__ID:
13084      case mozilla::dom::PBrowser::Msg_RealTouchEvent__ID:
13085      case mozilla::dom::PBrowser::Msg_RealTouchMoveEvent__ID:
13086      case mozilla::dom::PBrowser::Msg_RealDragEvent__ID:
13087      case mozilla::dom::PBrowser::Msg_UpdateDimensions__ID:
13088        return true;
13089    }
13090  }
13091  return false;
13092}
13093 
13094/* static */
13095bool nsContentUtils::IsMessageCriticalInputEvent(const IPC::Message& aMsg) {
13096  if ((aMsg.type() & mozilla::dom::PBrowser::PBrowserStart) ==
13097      mozilla::dom::PBrowser::PBrowserStart) {
13098    switch (aMsg.type()) {
13099      case mozilla::dom::PBrowser::Msg_RealMouseButtonEvent__ID:
13100      case mozilla::dom::PBrowser::Msg_RealKeyEvent__ID:
13101      case mozilla::dom::PBrowser::Msg_MouseWheelEvent__ID:
13102      case mozilla::dom::PBrowser::Msg_RealTouchEvent__ID:
13103      case mozilla::dom::PBrowser::Msg_RealDragEvent__ID:
13104        return true;
13105    }
13106  }
13107  return false;
13108}
13109 
13110static const char* kUserInteractionInactive = "user-interaction-inactive";
13111static const char* kUserInteractionActive = "user-interaction-active";
13112 
13113void nsContentUtils::UserInteractionObserver::Init() {
13114  // Listen for the observer messages from EventStateManager which are telling
13115  // us whether or not the user is interacting.
13116  nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
13117  obs->AddObserver(this, kUserInteractionInactive, false);
13118  obs->AddObserver(this, kUserInteractionActive, false);
13119 
13120  // We can't register ourselves as an annotator yet, as the
13121  // BackgroundHangMonitor hasn't started yet. It will have started by the
13122  // time we have the chance to spin the event loop.
13123  RefPtr<UserInteractionObserver> self = this;
13124  NS_DispatchToMainThread(NS_NewRunnableFunction(
13125      "nsContentUtils::UserInteractionObserver::Init",
13126      [=]() { BackgroundHangMonitor::RegisterAnnotator(*self); }));
13127}
13128 
13129void nsContentUtils::UserInteractionObserver::Shutdown() {
13130  nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
13131  if (obs) {
13132    obs->RemoveObserver(this, kUserInteractionInactive);
13133    obs->RemoveObserver(this, kUserInteractionActive);
13134  }
13135 
13136  BackgroundHangMonitor::UnregisterAnnotator(*this);
13137}
13138 
13139/**
13140 * NB: This function is always called by the BackgroundHangMonitor thread.
13141 *     Plan accordingly
13142 */
13143void nsContentUtils::UserInteractionObserver::AnnotateHang(
13144    BackgroundHangAnnotations& aAnnotations) {
13145  // NOTE: Only annotate the hang report if the user is known to be interacting.
13146  if (sUserActive) {
13147    aAnnotations.AddAnnotation(u"UserInteracting"_ns, true);
13148  }
13149}
13150 
13151NS_IMETHODIMPnsresult
13152nsContentUtils::UserInteractionObserver::Observe(nsISupports* aSubject,
13153                                                 const char* aTopic,
13154                                                 const char16_t* aData) {
13155  if (!strcmp(aTopic, kUserInteractionInactive)) {
13156    if (sUserActive && XRE_IsParentProcess()) {
13157      glean::RecordPowerMetrics();
13158    }
13159    sUserActive = false;
13160  } else if (!strcmp(aTopic, kUserInteractionActive)) {
13161    if (!sUserActive && XRE_IsParentProcess()) {
13162      glean::RecordPowerMetrics();
13163 
13164      nsCOMPtr<nsIUserIdleServiceInternal> idleService =
13165          do_GetService("@mozilla.org/widget/useridleservice;1");
13166      if (idleService) {
13167        idleService->ResetIdleTimeOut(0);
13168      }
13169    }
13170 
13171    sUserActive = true;
13172  } else {
13173    NS_WARNING("Unexpected observer notification")NS_DebugBreak(NS_DEBUG_WARNING, "Unexpected observer notification"
, nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp",
 13173);
13174  }
13175  return NS_OK;
13176}
13177 
13178Atomic<bool> nsContentUtils::UserInteractionObserver::sUserActive(false);
13179NS_IMPL_ISUPPORTS(nsContentUtils::UserInteractionObserver, nsIObserver)MozExternalRefCountType nsContentUtils::UserInteractionObserver
::AddRef(void) { static_assert(!std::is_destructible_v<nsContentUtils
::UserInteractionObserver>, "Reference-counted class " "nsContentUtils::UserInteractionObserver"
 " should not have a public destructor. " "Make this class's destructor non-public"
); do { static_assert( mozilla::detail::AssertionConditionType
<decltype(int32_t(mRefCnt) >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) >= 0))),
 0))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) >= 0"
 " (" "illegal refcnt" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13179); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0"
 ") (" "illegal refcnt" ")"); do { MOZ_CrashSequence(__null, 13179
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false); do { static_assert( mozilla::detail::AssertionConditionType
<decltype("nsContentUtils::UserInteractionObserver" != nullptr
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!("nsContentUtils::UserInteractionObserver" != nullptr
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"\"nsContentUtils::UserInteractionObserver\" != nullptr" " ("
 "Must specify a name" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13179); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"nsContentUtils::UserInteractionObserver\" != nullptr"
 ") (" "Must specify a name" ")"); do { MOZ_CrashSequence(__null
, 13179); __attribute__((nomerge)) ::abort(); } while (false)
; } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread
.AssertOwnership("nsContentUtils::UserInteractionObserver" " not thread-safe"
); nsrefcnt count = ++mRefCnt; NS_LogAddRef((this), (count), (
"nsContentUtils::UserInteractionObserver"), (uint32_t)(sizeof
(*this))); return count; } MozExternalRefCountType nsContentUtils
::UserInteractionObserver::Release(void) { do { static_assert
( mozilla::detail::AssertionConditionType<decltype(int32_t
(mRefCnt) > 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) > 0))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) > 0"
 " (" "dup release" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13179); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0"
 ") (" "dup release" ")"); do { MOZ_CrashSequence(__null, 13179
); __attribute__((nomerge)) ::abort(); } while (false); } } while
 (false); do { static_assert( mozilla::detail::AssertionConditionType
<decltype("nsContentUtils::UserInteractionObserver" != nullptr
)>::isValid, "invalid assertion condition"); if ((__builtin_expect
(!!(!(!!("nsContentUtils::UserInteractionObserver" != nullptr
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"\"nsContentUtils::UserInteractionObserver\" != nullptr" " ("
 "Must specify a name" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13179); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"nsContentUtils::UserInteractionObserver\" != nullptr"
 ") (" "Must specify a name" ")"); do { MOZ_CrashSequence(__null
, 13179); __attribute__((nomerge)) ::abort(); } while (false)
; } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread
.AssertOwnership("nsContentUtils::UserInteractionObserver" " not thread-safe"
); const char* const nametmp = "nsContentUtils::UserInteractionObserver"
; nsrefcnt count = --mRefCnt; NS_LogRelease((this), (count), (
nametmp)); if (count == 0) { mRefCnt = 1; delete (this); return
 0; } return count; } nsresult nsContentUtils::UserInteractionObserver
::QueryInterface(const nsIID& aIID, void** aInstancePtr) {
 do { if (!(aInstancePtr)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "QueryInterface requires a non-NULL destination!", "aInstancePtr"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13179); MOZ_PretendNoReturn
(); } } while (0); nsresult rv = NS_ERROR_FAILURE; static_assert
(1 > 0, "Need more arguments to NS_INTERFACE_TABLE"); static
 const QITableEntry table[] = { {&mozilla::detail::kImplementedIID
<nsContentUtils::UserInteractionObserver, nsIObserver>,
 int32_t( reinterpret_cast<char*>(static_cast<nsIObserver
*>((nsContentUtils::UserInteractionObserver*)0x1000)) - reinterpret_cast
<char*>((nsContentUtils::UserInteractionObserver*)0x1000
))}, {&mozilla::detail::kImplementedIID<nsContentUtils
::UserInteractionObserver, nsISupports>, int32_t(reinterpret_cast
<char*>(static_cast<nsISupports*>( static_cast<
nsIObserver*>((nsContentUtils::UserInteractionObserver*)0x1000
))) - reinterpret_cast<char*>((nsContentUtils::UserInteractionObserver
*)0x1000))}, { nullptr, 0 } } ; static_assert(std::size(table
) > 1, "need at least 1 interface"); rv = NS_TableDrivenQI
(static_cast<void*>(this), aIID, aInstancePtr, table); return
 rv; }
13180 
13181/* static */
13182bool nsContentUtils::IsSpecialName(const nsAString& aName) {
13183  return aName.LowerCaseEqualsLiteral("_blank") ||
13184         aName.LowerCaseEqualsLiteral("_top") ||
13185         aName.LowerCaseEqualsLiteral("_parent") ||
13186         aName.LowerCaseEqualsLiteral("_self");
13187}
13188 
13189/* static */
13190bool nsContentUtils::IsOverridingWindowName(const nsAString& aName) {
13191  return !aName.IsEmpty() && !IsSpecialName(aName);
13192}
13193 
13194// Unfortunately, we can't unwrap an IDL object using only a concrete type.
13195// We need to calculate type data based on the IDL typename. Which means
13196// wrapping our templated function in a macro.
13197#define EXTRACT_EXN_VALUES(T, ...)                                    \
13198  ExtractExceptionValuesImpl<mozilla::dom::prototypes::id::T,         \
13199                             T##_Binding::NativeType, T>(__VA_ARGS__) \
13200      .isOk()
13201 
13202template <prototypes::ID PrototypeID, class NativeType, typename T>
13203static Result<Ok, nsresult> ExtractExceptionValuesImpl(
13204    JSContext* aCx, JS::Handle<JSObject*> aObj, nsACString& aFilename,
13205    uint32_t* aLineOut, uint32_t* aColumnOut, nsString& aMessageOut) {
13206  AssertStaticUnwrapOK<PrototypeID>();
13207  RefPtr<T> exn;
13208  MOZ_TRY((UnwrapObject<PrototypeID, NativeType>(aObj, exn, nullptr)))__extension__({ auto mozTryVarTempResult = ::mozilla::ToResult
((UnwrapObject<PrototypeID, NativeType>(aObj, exn, nullptr
))); if ((__builtin_expect(!!(mozTryVarTempResult.isErr()), 0
))) { return mozTryVarTempResult.propagateErr(); } mozTryVarTempResult
.unwrap(); });
13209 
13210  if (nsCOMPtr<nsIStackFrame> location = exn->GetLocation()) {
13211    location->GetFilename(aCx, aFilename);
13212    *aLineOut = location->GetLineNumber(aCx);
13213    *aColumnOut = location->GetColumnNumber(aCx);
13214  } else {
13215    aFilename.Truncate();
13216    *aLineOut = 0;
13217    *aColumnOut = 0;
13218  }
13219 
13220  exn->GetName(aMessageOut);
13221  aMessageOut.AppendLiteral(": ");
13222 
13223  nsAutoString message;
13224  exn->GetMessageMoz(message);
13225  aMessageOut.Append(message);
13226  return Ok();
13227}
13228 
13229/* static */
13230bool nsContentUtils::ExtractExceptionValues(
13231    JSContext* aCx, JS::Handle<JSObject*> aObj, nsACString& aFilename,
13232    uint32_t* aLineOut, uint32_t* aColumnOut, nsString& aMessageOut) {
13233  return EXTRACT_EXN_VALUES(DOMException, aCx, aObj, aFilename, aLineOut,
13234                            aColumnOut, aMessageOut) ||
13235         EXTRACT_EXN_VALUES(Exception, aCx, aObj, aFilename, aLineOut,
13236                            aColumnOut, aMessageOut);
13237}
13238 
13239/* static */
13240void nsContentUtils::ExtractErrorValues(
13241    JSContext* aCx, JS::Handle<JS::Value> aValue, nsACString& aSourceSpecOut,
13242    uint32_t* aLineOut, uint32_t* aColumnOut, nsString& aMessageOut) {
13243  MOZ_ASSERT(aLineOut)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aLineOut)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aLineOut))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aLineOut", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13243); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aLineOut" ")"
); do { MOZ_CrashSequence(__null, 13243); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
13244  MOZ_ASSERT(aColumnOut)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aColumnOut)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aColumnOut))), 0))) { do { }
 while (false); MOZ_ReportAssertionFailure("aColumnOut", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13244); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aColumnOut"
 ")"); do { MOZ_CrashSequence(__null, 13244); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13245 
13246  if (aValue.isObject()) {
13247    JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
13248 
13249    // Try to process as an Error object.  Use the file/line/column values
13250    // from the Error as they will be more specific to the root cause of
13251    // the problem.
13252    JS::BorrowedErrorReport err(aCx);
13253    if (JS_ErrorFromException(aCx, obj, err)) {
13254      // Use xpc to extract the error message only.  We don't actually send
13255      // this report anywhere.
13256      RefPtr<xpc::ErrorReport> report = new xpc::ErrorReport();
13257      report->Init(err.get(),
13258                   nullptr,  // toString result
13259                   false,    // chrome
13260                   0);       // window ID
13261 
13262      if (!report->mFileName.IsEmpty()) {
13263        aSourceSpecOut = report->mFileName;
13264        *aLineOut = report->mLineNumber;
13265        *aColumnOut = report->mColumn;
13266      }
13267      aMessageOut.Assign(report->mErrorMsg);
13268    }
13269 
13270    // Next, try to unwrap the rejection value as a (DOM)Exception.
13271    else if (ExtractExceptionValues(aCx, obj, aSourceSpecOut, aLineOut,
13272                                    aColumnOut, aMessageOut)) {
13273      return;
13274    }
13275  }
13276 
13277  // If we could not unwrap a specific error type, then perform default safe
13278  // string conversions on primitives.  Objects will result in "[Object]"
13279  // unfortunately.
13280  if (aMessageOut.IsEmpty()) {
13281    nsAutoJSString jsString;
13282    if (jsString.init(aCx, aValue)) {
13283      aMessageOut = jsString;
13284    } else {
13285      JS_ClearPendingException(aCx);
13286    }
13287  }
13288}
13289 
13290#undef EXTRACT_EXN_VALUES
13291 
13292/* static */
13293bool nsContentUtils::ContentIsLink(nsIContent* aContent) {
13294  if (!aContent || !aContent->IsElement()) {
13295    return false;
13296  }
13297 
13298  if (aContent->IsHTMLElement(nsGkAtoms::a)) {
13299    return true;
13300  }
13301 
13302  return aContent->AsElement()->AttrValueIs(kNameSpaceID_XLink4, nsGkAtoms::type,
13303                                            nsGkAtoms::simple, eCaseMatters);
13304}
13305 
13306/* static */
13307already_AddRefed<ContentFrameMessageManager>
13308nsContentUtils::TryGetBrowserChildGlobal(nsISupports* aFrom) {
13309  RefPtr<nsFrameLoaderOwner> frameLoaderOwner = do_QueryObject(aFrom);
13310  if (!frameLoaderOwner) {
13311    return nullptr;
13312  }
13313 
13314  RefPtr<nsFrameLoader> frameLoader = frameLoaderOwner->GetFrameLoader();
13315  if (!frameLoader) {
13316    return nullptr;
13317  }
13318 
13319  RefPtr<ContentFrameMessageManager> manager =
13320      frameLoader->GetBrowserChildMessageManager();
13321  return manager.forget();
13322}
13323 
13324/* static */
13325Document* nsContentUtils::TryGetDocumentFromWindowGlobal(nsISupports* aFrom) {
13326  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aFrom);
13327  MOZ_DIAGNOSTIC_ASSERT(window, "Expected a window global")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(window)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(window))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("window" " (" "Expected a window global"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13327
); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "window"
 ") (" "Expected a window global" ")"); do { MOZ_CrashSequence
(__null, 13327); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13328  if (!window) {
13329    return nullptr;
13330  }
13331  return window->GetExtantDoc();
13332}
13333 
13334/* static */
13335uint32_t nsContentUtils::InnerOrOuterWindowCreated() {
13336  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13336); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 13336); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13337  ++sInnerOrOuterWindowCount;
13338  return ++sInnerOrOuterWindowSerialCounter;
13339}
13340 
13341/* static */
13342void nsContentUtils::InnerOrOuterWindowDestroyed() {
13343  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13343); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 13343); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13344  MOZ_ASSERT(sInnerOrOuterWindowCount > 0)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(sInnerOrOuterWindowCount > 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(sInnerOrOuterWindowCount >
 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("sInnerOrOuterWindowCount > 0", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13344); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sInnerOrOuterWindowCount > 0"
 ")"); do { MOZ_CrashSequence(__null, 13344); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13345  --sInnerOrOuterWindowCount;
13346}
13347 
13348static bool JSONCreator(const char16_t* aBuf, uint32_t aLen, void* aData) {
13349  nsAString* result = static_cast<nsAString*>(aData);
13350  return result->Append(aBuf, aLen, fallible);
13351}
13352 
13353/* static */
13354bool nsContentUtils::StringifyJSON(JSContext* aCx, JS::Handle<JS::Value> aValue,
13355                                   nsAString& aOutStr, JSONBehavior aBehavior) {
13356  MOZ_ASSERT(aCx)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aCx)>::isValid, "invalid assertion condition"); if
 ((__builtin_expect(!!(!(!!(aCx))), 0))) { do { } while (false
); MOZ_ReportAssertionFailure("aCx", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13356); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aCx" ")");
 do { MOZ_CrashSequence(__null, 13356); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
13357  switch (aBehavior) {
13358    case UndefinedIsNullStringLiteral: {
13359      aOutStr.Truncate();
13360      JS::Rooted<JS::Value> value(aCx, aValue);
13361      return JS_Stringify(aCx, &value, nullptr, JS::NullHandleValue,
13362                          JSONCreator, &aOutStr);
13363    }
13364    case UndefinedIsVoidString: {
13365      aOutStr.SetIsVoid(true);
13366      return JS::ToJSON(aCx, aValue, nullptr, JS::NullHandleValue, JSONCreator,
13367                        &aOutStr);
13368    }
13369    default:
13370      MOZ_ASSERT_UNREACHABLE("Invalid value for aBehavior")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Invalid value for aBehavior" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13370); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") ("
 "MOZ_ASSERT_UNREACHABLE: " "Invalid value for aBehavior" ")"
); do { MOZ_CrashSequence(__null, 13370); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
13371      return false;
13372  }
13373}
13374 
13375/* static */
13376bool nsContentUtils::
13377    HighPriorityEventPendingForTopLevelDocumentBeforeContentfulPaint(
13378        Document* aDocument) {
13379  MOZ_ASSERT(XRE_IsContentProcess(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(XRE_IsContentProcess())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(XRE_IsContentProcess()))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("XRE_IsContentProcess()"
 " (" "This function only makes sense in content processes" ")"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13380); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "XRE_IsContentProcess()" ") (" "This function only makes sense in content processes"
 ")"); do { MOZ_CrashSequence(__null, 13380); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false)
13380             "This function only makes sense in content processes")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(XRE_IsContentProcess())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(XRE_IsContentProcess()))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("XRE_IsContentProcess()"
 " (" "This function only makes sense in content processes" ")"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13380); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "XRE_IsContentProcess()" ") (" "This function only makes sense in content processes"
 ")"); do { MOZ_CrashSequence(__null, 13380); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13381 
13382  if (aDocument && !aDocument->IsLoadedAsData()) {
13383    if (nsPresContext* presContext = FindPresContextForDocument(aDocument)) {
13384      MOZ_ASSERT(!presContext->IsChrome(),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!presContext->IsChrome())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!presContext->IsChrome())
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!presContext->IsChrome()"
 " (" "Should never have a chrome PresContext in a content process"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13385
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!presContext->IsChrome()"
 ") (" "Should never have a chrome PresContext in a content process"
 ")"); do { MOZ_CrashSequence(__null, 13385); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false)
13385                 "Should never have a chrome PresContext in a content process")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!presContext->IsChrome())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!presContext->IsChrome())
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!presContext->IsChrome()"
 " (" "Should never have a chrome PresContext in a content process"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13385
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!presContext->IsChrome()"
 ") (" "Should never have a chrome PresContext in a content process"
 ")"); do { MOZ_CrashSequence(__null, 13385); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13386 
13387      return !presContext->GetInProcessRootContentDocumentPresContext()
13388                  ->HadFirstContentfulPaint() &&
13389             nsThreadManager::MainThreadHasPendingHighPriorityEvents();
13390    }
13391  }
13392  return false;
13393}
13394 
13395static nsGlobalWindowInner* GetInnerWindowForGlobal(nsIGlobalObject* aGlobal) {
13396  NS_ENSURE_TRUE(aGlobal, nullptr)do { if ((__builtin_expect(!!(!(aGlobal)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "aGlobal" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13396); return
 nullptr; } } while (false);
13397 
13398  if (auto* window = aGlobal->GetAsInnerWindow()) {
13399    return nsGlobalWindowInner::Cast(window);
13400  }
13401 
13402  // When Extensions run content scripts inside a sandbox, it uses
13403  // sandboxPrototype to make them appear as though they're running in the
13404  // scope of the page. So when a content script invokes postMessage, it expects
13405  // the |source| of the received message to be the window set as the
13406  // sandboxPrototype. This used to work incidentally for unrelated reasons, but
13407  // now we need to do some special handling to support it.
13408  JS::Rooted<JSObject*> scope(RootingCx(), aGlobal->GetGlobalJSObject());
13409  NS_ENSURE_TRUE(scope, nullptr)do { if ((__builtin_expect(!!(!(scope)), 0))) { NS_DebugBreak
(NS_DEBUG_WARNING, "NS_ENSURE_TRUE(" "scope" ") failed", nullptr
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13409); return
 nullptr; } } while (false);
13410 
13411  if (xpc::IsSandbox(scope)) {
13412    AutoJSAPI jsapi;
13413    MOZ_ALWAYS_TRUE(jsapi.Init(scope))do { if ((__builtin_expect(!!(jsapi.Init(scope)), 1))) { } else
 { do { do { } while (false); MOZ_ReportCrash("" "jsapi.Init(scope)"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13413); AnnotateMozCrashReason
("MOZ_CRASH(" "jsapi.Init(scope)" ")"); do { MOZ_CrashSequence
(__null, 13413); __attribute__((nomerge)) ::abort(); } while (
false); } while (false); } } while (false);
13414    JSContext* cx = jsapi.cx();
13415    // Our current Realm on aCx is the sandbox.  Using that for unwrapping
13416    // makes sense: if the sandbox can unwrap the window, we can use it.
13417    return xpc::SandboxWindowOrNull(scope, cx);
13418  }
13419 
13420  // The calling window must be holding a reference, so we can return a weak
13421  // pointer.
13422  return nsGlobalWindowInner::Cast(aGlobal->GetAsInnerWindow());
13423}
13424 
13425/* static */
13426nsGlobalWindowInner* nsContentUtils::IncumbentInnerWindow() {
13427  return GetInnerWindowForGlobal(GetIncumbentGlobal());
13428}
13429 
13430/* static */
13431nsGlobalWindowInner* nsContentUtils::EntryInnerWindow() {
13432  return GetInnerWindowForGlobal(GetEntryGlobal());
13433}
13434 
13435/* static */
13436bool nsContentUtils::IsURIInPrefList(nsIURI* aURI, const char* aPrefName) {
13437  MOZ_ASSERT(aPrefName)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aPrefName)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aPrefName))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aPrefName", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13437); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aPrefName"
 ")"); do { MOZ_CrashSequence(__null, 13437); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13438 
13439  nsAutoCString list;
13440  Preferences::GetCString(aPrefName, list);
13441  ToLowerCase(list);
13442  return IsURIInList(aURI, list);
13443}
13444 
13445/* static */
13446bool nsContentUtils::IsURIInList(nsIURI* aURI, const nsCString& aList) {
13447#ifdef DEBUG1
13448  nsAutoCString listLowerCase(aList);
13449  ToLowerCase(listLowerCase);
13450  MOZ_ASSERT(listLowerCase.Equals(aList),do { static_assert( mozilla::detail::AssertionConditionType<
decltype(listLowerCase.Equals(aList))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(listLowerCase.Equals(aList))
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("listLowerCase.Equals(aList)"
 " (" "The aList argument should be lower-case" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13451); AnnotateMozCrashReason("MOZ_ASSERT" "(" "listLowerCase.Equals(aList)"
 ") (" "The aList argument should be lower-case" ")"); do { MOZ_CrashSequence
(__null, 13451); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false)
13451             "The aList argument should be lower-case")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(listLowerCase.Equals(aList))>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(listLowerCase.Equals(aList))
)), 0))) { do { } while (false); MOZ_ReportAssertionFailure("listLowerCase.Equals(aList)"
 " (" "The aList argument should be lower-case" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13451); AnnotateMozCrashReason("MOZ_ASSERT" "(" "listLowerCase.Equals(aList)"
 ") (" "The aList argument should be lower-case" ")"); do { MOZ_CrashSequence
(__null, 13451); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13452#endif
13453 
13454  if (!aURI) {
13455    return false;
13456  }
13457 
13458  if (aList.IsEmpty()) {
13459    return false;
13460  }
13461 
13462  nsAutoCString scheme;
13463  aURI->GetScheme(scheme);
13464  if (!scheme.EqualsLiteral("http") && !scheme.EqualsLiteral("https")) {
13465    return false;
13466  }
13467 
13468  // The list is comma separated domain list.  Each item may start with "*.".
13469  // If starts with "*.", it matches any sub-domains.
13470 
13471  nsCCharSeparatedTokenizer tokenizer(aList, ',');
13472  while (tokenizer.hasMoreTokens()) {
13473    const nsCString token(tokenizer.nextToken());
13474 
13475    nsAutoCString host;
13476    aURI->GetHost(host);
13477    if (host.IsEmpty()) {
13478      return false;
13479    }
13480    ToLowerCase(host);
13481 
13482    for (;;) {
13483      int32_t index = token.Find(host);
13484      if (index >= 0 &&
13485          static_cast<uint32_t>(index) + host.Length() <= token.Length()) {
13486        // If we found a full match, return true.
13487        size_t indexAfterHost = index + host.Length();
13488        if (index == 0 && indexAfterHost == token.Length()) {
13489          return true;
13490        }
13491        // If next character is '/', we need to check the path too.
13492        // We assume the path in the list means "/foo" + "*".
13493        if (token[indexAfterHost] == '/') {
13494          nsDependentCSubstring pathInList(
13495              token, indexAfterHost,
13496              static_cast<nsDependentCSubstring::size_type>(-1));
13497          nsAutoCString filePath;
13498          aURI->GetFilePath(filePath);
13499          ToLowerCase(filePath);
13500          if (StringBeginsWith(filePath, pathInList) &&
13501              (filePath.Length() == pathInList.Length() ||
13502               pathInList.EqualsLiteral("/") ||
13503               filePath[pathInList.Length() - 1] == '/' ||
13504               filePath[pathInList.Length() - 1] == '?' ||
13505               filePath[pathInList.Length() - 1] == '#')) {
13506            return true;
13507          }
13508        }
13509      }
13510      int32_t startIndexOfCurrentLevel = host[0] == '*' ? 1 : 0;
13511      int32_t startIndexOfNextLevel =
13512          host.Find(".", startIndexOfCurrentLevel + 1);
13513      if (startIndexOfNextLevel <= 0) {
13514        break;
13515      }
13516      host.ReplaceLiteral(0, startIndexOfNextLevel, "*");
13517    }
13518  }
13519 
13520  return false;
13521}
13522 
13523/* static */
13524LayoutDeviceIntMargin nsContentUtils::GetWindowSafeAreaInsets(
13525    nsIScreen* aScreen, const LayoutDeviceIntMargin& aSafeAreaInsets,
13526    const LayoutDeviceIntRect& aWindowRect) {
13527  // This calculates safe area insets of window from screen rectangle, window
13528  // rectangle and safe area insets of screen.
13529  //
13530  // +----------------------------------------+ <-- screen
13531  // |  +-------------------------------+  <------- window
13532  // |  | window's safe area inset top) |     |
13533  // +--+-------------------------------+--+  |
13534  // |  |                               |  |<------ safe area rectangle of
13535  // |  |                               |  |  |     screen
13536  // +--+-------------------------------+--+  |
13537  // |  |window's safe area inset bottom|     |
13538  // |  +-------------------------------+     |
13539  // +----------------------------------------+
13540  //
13541  LayoutDeviceIntMargin windowSafeAreaInsets;
13542  if (windowSafeAreaInsets == aSafeAreaInsets) {
13543    // no safe area insets.
13544    return windowSafeAreaInsets;
13545  }
13546 
13547  const LayoutDeviceIntRect screenRect = aScreen->GetRect();
13548  LayoutDeviceIntRect safeAreaRect = screenRect;
13549  safeAreaRect.Deflate(aSafeAreaInsets);
13550 
13551  // FIXME(bug 1754323): This can trigger because the screen rect is not
13552  // orientation-aware.
13553  // MOZ_ASSERT(screenRect.Contains(windowRect),
13554  //            "Screen doesn't contain window rect? Something seems off");
13555 
13556  // window's rect of safe area
13557  safeAreaRect = safeAreaRect.Intersect(aWindowRect);
13558 
13559  windowSafeAreaInsets.top = safeAreaRect.y - aWindowRect.y;
13560  windowSafeAreaInsets.left = safeAreaRect.x - aWindowRect.x;
13561  windowSafeAreaInsets.right =
13562      aWindowRect.x + aWindowRect.width - (safeAreaRect.x + safeAreaRect.width);
13563  windowSafeAreaInsets.bottom = aWindowRect.y + aWindowRect.height -
13564                                (safeAreaRect.y + safeAreaRect.height);
13565 
13566  windowSafeAreaInsets.EnsureAtLeast(LayoutDeviceIntMargin());
13567  // This shouldn't be needed, but it wallpapers orientation issues, see bug
13568  // 1754323.
13569  windowSafeAreaInsets.EnsureAtMost(aSafeAreaInsets);
13570 
13571  return windowSafeAreaInsets;
13572}
13573 
13574/* static */
13575nsContentUtils::SubresourceCacheValidationInfo
13576nsContentUtils::GetSubresourceCacheValidationInfo(nsIRequest* aRequest,
13577                                                  nsIURI* aURI) {
13578  SubresourceCacheValidationInfo info;
13579  if (nsCOMPtr<nsICacheInfoChannel> cache = do_QueryInterface(aRequest)) {
13580    uint32_t value = 0;
13581    if (NS_SUCCEEDED(cache->GetCacheTokenExpirationTime(&value))((bool)(__builtin_expect(!!(!NS_FAILED_impl(cache->GetCacheTokenExpirationTime
(&value))), 1)))) {
13582      // NOTE: If the cache doesn't expire, the value should be
13583      // nsICacheEntry::NO_EXPIRATION_TIME.
13584      info.mExpirationTime.emplace(CacheExpirationTime::ExpireAt(value));
13585    }
13586  }
13587 
13588  // Determine whether the cache entry must be revalidated when we try to use
13589  // it. Currently, only HTTP specifies this information...
13590  if (nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aRequest)) {
13591    (void)httpChannel->IsNoStoreResponse(&info.mMustRevalidate);
13592 
13593    if (!info.mMustRevalidate) {
13594      (void)httpChannel->IsNoCacheResponse(&info.mMustRevalidate);
13595    }
13596 
13597    if (!info.mMustRevalidate) {
13598      nsAutoCString vary;
13599      (void)httpChannel->GetResponseHeader("vary"_ns, vary);
13600      info.mMustRevalidate = [&] {
13601        for (const nsACString& token :
13602             nsCCharSeparatedTokenizer(vary, ',').ToRange()) {
13603          if (token.EqualsLiteral("*")) {
13604            return true;
13605          }
13606          if (token.EqualsIgnoreCase("cookie")) {
13607            return true;
13608          }
13609        }
13610        return false;
13611      }();
13612    }
13613  }
13614 
13615  // data: URIs are safe to cache across documents under any circumstance, so we
13616  // special-case them here even though the channel itself doesn't have any
13617  // caching policy. Same for chrome:// uris.
13618  //
13619  // TODO(emilio): Figure out which other schemes that don't have caching
13620  // policies are safe to cache. Blobs should be...
13621  const bool knownCacheable = [&] {
13622    if (!aURI) {
13623      return false;
13624    }
13625    if (aURI->SchemeIs("data") || aURI->SchemeIs("moz-page-thumb") ||
13626        aURI->SchemeIs("moz-newtab-wallpaper") ||
13627        aURI->SchemeIs("moz-extension")) {
13628      return true;
13629    }
13630    if (aURI->SchemeIs("chrome") || aURI->SchemeIs("resource")) {
13631      return !StaticPrefs::nglayout_debug_disable_xul_cache();
13632    }
13633    return false;
13634  }();
13635 
13636  if (knownCacheable) {
13637    MOZ_ASSERT(!info.mExpirationTime)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!info.mExpirationTime)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!info.mExpirationTime))), 0)
)) { do { } while (false); MOZ_ReportAssertionFailure("!info.mExpirationTime"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13637); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!info.mExpirationTime" ")"); do { MOZ_CrashSequence
(__null, 13637); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13638    MOZ_ASSERT(!info.mMustRevalidate)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(!info.mMustRevalidate)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(!info.mMustRevalidate))), 0)
)) { do { } while (false); MOZ_ReportAssertionFailure("!info.mMustRevalidate"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13638); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "!info.mMustRevalidate" ")"); do { MOZ_CrashSequence
(__null, 13638); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13639    info.mExpirationTime = Some(CacheExpirationTime::Never());
13640  }
13641 
13642  return info;
13643}
13644 
13645CacheExpirationTime nsContentUtils::GetSubresourceCacheExpirationTime(
13646    nsIRequest* aRequest, nsIURI* aURI) {
13647  auto info = GetSubresourceCacheValidationInfo(aRequest, aURI);
13648 
13649  // For now, we never cache entries that we have to revalidate, or whose
13650  // channel don't support caching.
13651  if (info.mMustRevalidate || !info.mExpirationTime) {
13652    return CacheExpirationTime::AlreadyExpired();
13653  }
13654  return *info.mExpirationTime;
13655}
13656 
13657/* static */
13658bool nsContentUtils::ShouldBypassSubResourceCache(Document* aDoc) {
13659  RefPtr<nsILoadGroup> lg = aDoc->GetDocumentLoadGroup();
13660  if (!lg) {
13661    return false;
13662  }
13663  nsLoadFlags flags;
13664  if (NS_FAILED(lg->GetLoadFlags(&flags))((bool)(__builtin_expect(!!(NS_FAILED_impl(lg->GetLoadFlags
(&flags))), 0)))) {
13665    return false;
13666  }
13667  return flags & (nsIRequest::LOAD_BYPASS_CACHE |
13668                  nsICachingChannel::LOAD_BYPASS_LOCAL_CACHE);
13669}
13670 
13671nsCString nsContentUtils::TruncatedURLForDisplay(nsIURI* aURL, size_t aMaxLen) {
13672  nsCString spec;
13673  if (aURL) {
13674    aURL->GetSpec(spec);
13675    spec.Truncate(std::min(aMaxLen, spec.Length()));
13676  }
13677  return spec;
13678}
13679 
13680/* static */
13681nsresult nsContentUtils::AnonymizeId(nsAString& aId,
13682                                     const nsACString& aOriginKey,
13683                                     OriginFormat aFormat) {
13684  MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(NS_IsMainThread())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) {
 do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13684); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { MOZ_CrashSequence
(__null, 13684); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13685 
13686  nsresult rv;
13687  nsCString rawKey;
13688  if (aFormat == OriginFormat::Base64) {
13689    rv = Base64Decode(aOriginKey, rawKey);
13690    NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13690); return rv; } } while (false);
13691  } else {
13692    rawKey = aOriginKey;
13693  }
13694 
13695  HMAC hmac;
13696  rv = hmac.Begin(
13697      SEC_OID_SHA256,
13698      Span(reinterpret_cast<const uint8_t*>(rawKey.get()), rawKey.Length()));
13699  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13699); return rv; } } while (false);
13700 
13701  NS_ConvertUTF16toUTF8 id(aId);
13702  rv = hmac.Update(reinterpret_cast<const uint8_t*>(id.get()), id.Length());
13703  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13703); return rv; } } while (false);
13704 
13705  nsTArray<uint8_t> macBytes;
13706  rv = hmac.End(macBytes);
13707  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13707); return rv; } } while (false);
13708 
13709  nsCString macBase64;
13710  rv = Base64Encode(
13711      nsDependentCSubstring(reinterpret_cast<const char*>(macBytes.Elements()),
13712                            macBytes.Length()),
13713      macBase64);
13714  NS_ENSURE_SUCCESS(rv, rv)do { nsresult __rv = rv; if (((bool)(__builtin_expect(!!(NS_FAILED_impl
(__rv)), 0)))) { const char* name = mozilla::GetStaticErrorName
(__rv); mozilla::SmprintfPointer msg = mozilla::Smprintf( "NS_ENSURE_SUCCESS(%s, %s) failed with "
 "result 0x%" "X" "%s%s%s", "rv", "rv", static_cast<uint32_t
>(__rv), name ? " (" : "", name ? name : "", name ? ")" : ""
); NS_DebugBreak(NS_DEBUG_WARNING, msg.get(), nullptr, "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13714); return rv; } } while (false);
13715 
13716  CopyUTF8toUTF16(macBase64, aId);
13717  return NS_OK;
13718}
13719 
13720void nsContentUtils::RequestGeckoTaskBurst() {
13721  nsCOMPtr<nsIAppShell> appShell = do_GetService(NS_APPSHELL_CID{0x2d96b3df, 0xc051, 0x11d1, {0xa8, 0x27, 0x00, 0x40, 0x95, 0x9a
, 0x28, 0xc9}});
13722  if (appShell) {
13723    appShell->GeckoTaskBurst();
13724  }
13725}
13726 
13727nsIContent* nsContentUtils::GetClosestLinkInFlatTree(nsIContent* aContent) {
13728  for (nsIContent* content = aContent; content;
13729       content = content->GetFlattenedTreeParent()) {
13730    if (nsContentUtils::IsDraggableLink(content)) {
13731      return content;
13732    }
13733  }
13734  return nullptr;
13735}
13736 
13737template <TreeKind aKind>
13738MOZ_ALWAYS_INLINEinline const nsINode* GetParent(const nsINode* aNode) {
13739  if constexpr (aKind == TreeKind::DOM) {
13740    return aNode->GetParentNode();
13741  } else if constexpr (aKind == TreeKind::ShadowIncludingDOM) {
13742    return aNode->GetParentOrShadowHostNode();
13743  } else if constexpr (aKind == TreeKind::FlatForSelection) {
13744    return aNode->GetFlattenedTreeParentNodeForSelection();
13745  } else if constexpr (aKind == TreeKind::Flat) {
13746    return aNode->GetFlattenedTreeParentNode();
13747  } else {
13748    MOZ_MAKE_COMPILER_ASSUME_IS_UNREACHABLE("Handle the new TreeKind value")do { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(false)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Handle the new TreeKind value" ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13748); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") ("
 "MOZ_ASSERT_UNREACHABLE: " "Handle the new TreeKind value" ")"
); do { MOZ_CrashSequence(__null, 13748); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false); __builtin_unreachable
(); } while (false);
13749  }
13750}
13751 
13752template <TreeKind aKind>
13753Maybe<int32_t> nsContentUtils::GetIndexInParent(
13754    const nsINode* aParent, const nsIContent* aPossibleChild) {
13755  const Maybe<uint32_t> idx = [&]() {
13756    if constexpr (aKind == TreeKind::ShadowIncludingDOM) {
13757      return aParent->ComputeIndexOf(aPossibleChild);
13758    } else {
13759      return aParent->ComputeIndexOf<aKind>(aPossibleChild);
13760    }
13761  }();
13762  if (idx) {
13763    return idx.map([](auto i) { return AssertedCast<int32_t>(i); });
13764  }
13765 
13766  if constexpr (aKind == TreeKind::ShadowIncludingDOM) {
13767    if (const auto* sr = ShadowRoot::FromNode(aPossibleChild)) {
13768      return sr->GetHost() == aParent ? Some(-1) : Nothing();
13769    }
13770  }
13771 
13772  // Handle pseudo-element and anonymous node ordering:
13773  //   ::backdrop -> ::marker -> ::checkmark -> ::before -> regular siblings ->
13774  //   all other NAC -> ::after -> ::picker-icon
13775  // This matches the order of AllChildrenIterator.
13776  if (NS_WARN_IF(!aPossibleChild->IsRootOfNativeAnonymousSubtree())NS_warn_if_impl(!aPossibleChild->IsRootOfNativeAnonymousSubtree
(), "!aPossibleChild->IsRootOfNativeAnonymousSubtree()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13776)) {
13777    // If aNode is mid unbind, we can reach this.
13778    return Nothing();
13779  }
13780 
13781  if (NS_WARN_IF(aPossibleChild->GetParentNode() != aParent)NS_warn_if_impl(aPossibleChild->GetParentNode() != aParent
, "aPossibleChild->GetParentNode() != aParent", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13781)) {
13782    // We can't be an anon child if not correctly parented.
13783    return Nothing();
13784  }
13785 
13786  if (aPossibleChild->IsGeneratedContentContainerForBackdrop()) {
13787    return Some(-5);
13788  }
13789 
13790  if (aPossibleChild->IsGeneratedContentContainerForMarker()) {
13791    return Some(-4);
13792  }
13793 
13794  if (aPossibleChild->IsGeneratedContentContainerForCheckmark()) {
13795    return Some(-3);
13796  }
13797 
13798  if (aPossibleChild->IsGeneratedContentContainerForBefore()) {
13799    return Some(-2);
13800  }
13801 
13802  AutoTArray<nsIContent*, 8> anonKids;
13803 
13804  // Regular children are indexed via ComputeIndexOf (range [0, GetChildCount))
13805  // for both DOM and ShadowIncludingDOM above; only the flat tree indexes them
13806  // via the flattened iterator. Trailing NAC must be based at the matching
13807  // count so it lands after the regular children in the same index space.
13808  const int32_t siblingCount = [&]() -> uint32_t {
13809    if constexpr (aKind == TreeKind::ShadowIncludingDOM) {
13810      return aParent->GetChildCount();
13811    } else {
13812      return aParent->GetChildCount<aKind>();
13813    }
13814  }();
13815 
13816  MOZ_ASSERT(aParent->MayHaveAnonymousChildren())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aParent->MayHaveAnonymousChildren())>::isValid
, "invalid assertion condition"); if ((__builtin_expect(!!(!(
!!(aParent->MayHaveAnonymousChildren()))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aParent->MayHaveAnonymousChildren()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13816); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aParent->MayHaveAnonymousChildren()" ")"
); do { MOZ_CrashSequence(__null, 13816); __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
13817  MOZ_ASSERT(aParent->IsContent())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aParent->IsContent())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(aParent->IsContent()))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("aParent->IsContent()"
, "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13817); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "aParent->IsContent()" ")"); do { MOZ_CrashSequence
(__null, 13817); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13818  nsContentUtils::AppendNativeAnonymousChildren(aParent->AsContent(), anonKids,
13819                                                nsIContent::eAllChildren);
13820 
13821  if (aPossibleChild->IsGeneratedContentContainerForAfter()) {
13822    return Some(int32_t(siblingCount + anonKids.Length()));
13823  }
13824 
13825  if (aPossibleChild->IsGeneratedContentContainerForPickerIcon()) {
13826    return Some(int32_t(siblingCount + anonKids.Length()) + 1);
13827  }
13828 
13829  auto index = anonKids.IndexOf(aPossibleChild);
13830  if (index == decltype(anonKids)::NoIndex) {
13831    MOZ_ASSERT_UNREACHABLE(do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Missing parent -> child link somehow?" "Potentially unstable ordering"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13833
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: "
 "Missing parent -> child link somehow?" "Potentially unstable ordering"
 ")"); do { MOZ_CrashSequence(__null, 13833); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false)
13832        "Missing parent -> child link somehow?"do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Missing parent -> child link somehow?" "Potentially unstable ordering"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13833
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: "
 "Missing parent -> child link somehow?" "Potentially unstable ordering"
 ")"); do { MOZ_CrashSequence(__null, 13833); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false)
13833        "Potentially unstable ordering")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(false)>::isValid, "invalid assertion condition");
 if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while (
false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: "
 "Missing parent -> child link somehow?" "Potentially unstable ordering"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13833
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: "
 "Missing parent -> child link somehow?" "Potentially unstable ordering"
 ")"); do { MOZ_CrashSequence(__null, 13833); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13834    return Nothing();
13835  }
13836  return Some(siblingCount + int32_t(index));
13837}
13838 
13839template <TreeKind aTreeKind>
13840int32_t nsContentUtils::CompareTreePosition(const nsINode* aNode1,
13841                                            const nsINode* aNode2,
13842                                            const nsINode* aCommonAncestor,
13843                                            NodeIndexCache* aCache) {
13844  MOZ_ASSERT(aNode1, "aNode1 must not be null")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode1)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(aNode1))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aNode1" " (" "aNode1 must not be null"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13844
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode1" ") (" "aNode1 must not be null"
 ")"); do { MOZ_CrashSequence(__null, 13844); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13845  MOZ_ASSERT(aNode2, "aNode2 must not be null")do { static_assert( mozilla::detail::AssertionConditionType<
decltype(aNode2)>::isValid, "invalid assertion condition")
; if ((__builtin_expect(!!(!(!!(aNode2))), 0))) { do { } while
 (false); MOZ_ReportAssertionFailure("aNode2" " (" "aNode2 must not be null"
 ")", "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13845
); AnnotateMozCrashReason("MOZ_ASSERT" "(" "aNode2" ") (" "aNode2 must not be null"
 ")"); do { MOZ_CrashSequence(__null, 13845); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13846 
13847  if (NS_WARN_IF(aNode1 == aNode2)NS_warn_if_impl(aNode1 == aNode2, "aNode1 == aNode2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13847)) {
13848    return 0;
13849  }
13850 
13851  // TODO: Maybe handle flat tree too or other common cases?
13852  if constexpr (aTreeKind == TreeKind::DOM ||
13853                aTreeKind == TreeKind::ShadowIncludingDOM) {
13854    if (aNode1->GetNextSibling() == aNode2) {
13855      return -1;
13856    }
13857    if (aNode1->GetPreviousSibling() == aNode2) {
13858      return 1;
13859    }
13860  }
13861 
13862  AutoTArray<const nsINode*, 32> node1Ancestors;
13863  const nsINode* c1;
13864  for (c1 = aNode1; c1 && c1 != aCommonAncestor;
13865       c1 = GetParent<aTreeKind>(c1)) {
13866    node1Ancestors.AppendElement(c1);
13867  }
13868  if (!c1 && aCommonAncestor) {
13869    // So, it turns out aCommonAncestor was not an ancestor of c1. Oops.
13870    // Never mind. We can continue as if aCommonAncestor was null.
13871    aCommonAncestor = nullptr;
13872  }
13873 
13874  AutoTArray<const nsINode*, 32> node2Ancestors;
13875  const nsINode* c2;
13876  for (c2 = aNode2; c2 && c2 != aCommonAncestor;
13877       c2 = GetParent<aTreeKind>(c2)) {
13878    node2Ancestors.AppendElement(c2);
13879  }
13880  if (!c2 && aCommonAncestor) {
13881    // So, it turns out aCommonAncestor was not an ancestor of c2.
13882    // We need to retry with no common ancestor hint.
13883    return CompareTreePosition<aTreeKind>(aNode1, aNode2, nullptr, aCache);
13884  }
13885 
13886  // FIXME: Looks like that some of this can be rewritten with CommonAncestors.
13887  int last1 = node1Ancestors.Length() - 1;
13888  int last2 = node2Ancestors.Length() - 1;
13889  const nsINode* node1Ancestor = nullptr;
13890  const nsINode* node2Ancestor = nullptr;
13891  while (last1 >= 0 && last2 >= 0 &&
13892         ((node1Ancestor = node1Ancestors.ElementAt(last1)) ==
13893          (node2Ancestor = node2Ancestors.ElementAt(last2)))) {
13894    last1--;
13895    last2--;
13896  }
13897 
13898  if (last1 < 0) {
13899    if (last2 < 0) {
13900      NS_ASSERTION(aNode1 == aNode2, "internal error?")do { if (!(aNode1 == aNode2)) { NS_DebugBreak(NS_DEBUG_ASSERTION
, "internal error?", "aNode1 == aNode2", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13900); MOZ_PretendNoReturn(); } } while (0);
13901      return 0;
13902    }
13903    // aContent1 is an ancestor of aContent2
13904    return -1;
13905  }
13906 
13907  if (last2 < 0) {
13908    // aContent2 is an ancestor of aContent1
13909    return 1;
13910  }
13911  // node1Ancestor != node2Ancestor, so they must be siblings with the
13912  // same parent
13913  const nsINode* parent = GetParent<aTreeKind>(node1Ancestor);
13914  if (NS_WARN_IF(!parent)NS_warn_if_impl(!parent, "!parent", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13914)) {  // different documents??
13915    return 0;
13916  }
13917  MOZ_ASSERT(node1Ancestor)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(node1Ancestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(node1Ancestor))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("node1Ancestor",
 "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13917); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "node1Ancestor" ")"); do { MOZ_CrashSequence
(__null, 13917); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13918  MOZ_ASSERT(node2Ancestor)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(node2Ancestor)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(node2Ancestor))), 0))) { do {
 } while (false); MOZ_ReportAssertionFailure("node2Ancestor",
 "/root/firefox-clang/dom/base/nsContentUtils.cpp", 13918); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "node2Ancestor" ")"); do { MOZ_CrashSequence
(__null, 13918); __attribute__((nomerge)) ::abort(); } while (
false); } } while (false);
13919  Maybe<int32_t> index1;
13920  Maybe<int32_t> index2;
13921  // node1Ancestor and node2Ancestor must be children of parent so that they
13922  // must be content nodes if we can get the indices.
13923  MOZ_DIAGNOSTIC_ASSERT(node1Ancestor->IsContent())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(node1Ancestor->IsContent())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(node1Ancestor->IsContent(
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("node1Ancestor->IsContent()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13923); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "node1Ancestor->IsContent()"
 ")"); do { MOZ_CrashSequence(__null, 13923); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13924  MOZ_DIAGNOSTIC_ASSERT(node2Ancestor->IsContent())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(node2Ancestor->IsContent())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(node2Ancestor->IsContent(
)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure
("node2Ancestor->IsContent()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13924); AnnotateMozCrashReason("MOZ_DIAGNOSTIC_ASSERT" "(" "node2Ancestor->IsContent()"
 ")"); do { MOZ_CrashSequence(__null, 13924); __attribute__((
nomerge)) ::abort(); } while (false); } } while (false);
13925  if (aCache) {
13926    aCache->ComputeIndicesOf<aTreeKind>(parent, node1Ancestor->AsContent(),
13927                                        node2Ancestor->AsContent(), index1,
13928                                        index2);
13929  } else {
13930    index1 = GetIndexInParent<aTreeKind>(parent, node1Ancestor->AsContent());
13931    index2 = GetIndexInParent<aTreeKind>(parent, node2Ancestor->AsContent());
13932  }
13933  if (NS_WARN_IF(index1.isNothing())NS_warn_if_impl(index1.isNothing(), "index1.isNothing()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13933) || NS_WARN_IF(index2.isNothing())NS_warn_if_impl(index2.isNothing(), "index2.isNothing()", "/root/firefox-clang/dom/base/nsContentUtils.cpp"
, 13933)) {
13934    // This should generally never happen, but can happen mid-unbind or in other
13935    // edge cases, deal with it somewhat reasonably.
13936    return 0;
13937  }
13938  return static_cast<int32_t>(static_cast<int64_t>(*index1) - *index2);
13939}
13940 
13941nsIContent* nsContentUtils::AttachDeclarativeShadowRoot(
13942    nsIContent* aHost, ShadowRootMode aMode, bool aIsClonable,
13943    bool aIsSerializable, bool aDelegatesFocus, bool aCustomElementRegistry,
13944    SlotAssignmentMode aSlotAssignment, const nsAString& aReferenceTarget) {
13945  RefPtr<Element> host = mozilla::dom::Element::FromNodeOrNull(aHost);
13946  if (!host || host->GetShadowRoot()) {
13947    // https://html.spec.whatwg.org/#parsing-main-inhead:shadow-host
13948    return nullptr;
13949  }
13950 
13951  ShadowRootInit init;
13952  init.mMode = aMode;
13953  init.mDelegatesFocus = aDelegatesFocus;
13954  init.mSlotAssignment = aSlotAssignment;
13955  init.mClonable = aIsClonable;
13956  init.mSerializable = aIsSerializable;
13957  // https://html.spec.whatwg.org/#current-template-insertion-mode
13958  // "Let registry be null if templateStartTag has a
13959  // shadowrootcustomelementregistry attribute; otherwise
13960  // declarativeShadowHostElement's node document's custom element registry."
13961  if (StaticPrefs::dom_scoped_custom_element_registries_enabled()) {
13962    if (aCustomElementRegistry) {
13963      init.mCustomElementRegistry.Construct(nullptr);
13964    } else {
13965      init.mCustomElementRegistry.Construct(
13966          host->OwnerDoc()->GetCustomElementRegistry());
13967    }
13968  }
13969 
13970  RefPtr shadowRoot = host->AttachShadow(init, IgnoreErrors());
13971  if (shadowRoot) {
13972    shadowRoot->SetIsDeclarative(
13973        nsGenericHTMLFormControlElement::ShadowRootDeclarative::Yes);
13974    // https://html.spec.whatwg.org/#parsing-main-inhead
13975    // 7. If templateStartTag has a shadowrootcustomelementregistry attribute,
13976    //    set shadow's keep custom element registry null to true.
13977    if (StaticPrefs::dom_scoped_custom_element_registries_enabled() &&
13978        aCustomElementRegistry) {
13979      shadowRoot->SetKeepCustomElementRegistryNull();
13980    }
13981    // https://html.spec.whatwg.org/#parsing-main-inhead:available-to-element-internals
13982    shadowRoot->SetAvailableToElementInternals();
13983    shadowRoot->SetReferenceTarget(aReferenceTarget);
13984  }
13985  return shadowRoot;
13986}
13987 
13988// https://html.spec.whatwg.org/#the-navigation-must-be-a-replace
13989/* static */ bool nsContentUtils::NavigationMustBeAReplace(
13990    nsIURI& aURI, const Document& aDocument) {
13991  // The navigation must be a replace, given a URL url and a Document document,
13992  // if any of the following are true:
13993  // - url's scheme is "javascript"; or
13994  // - document's is initial about:blank is true.
13995  return aURI.SchemeIs("javascript") ||
13996         (NS_IsAboutBlank(aDocument.GetDocumentURI()) &&
13997          aDocument.IsInitialDocument());
13998}
13999 
14000template int32_t nsContentUtils::CompareTreePosition<TreeKind::DOM>(
14001    const nsINode*, const nsINode*, const nsINode*, NodeIndexCache*);
14002template int32_t
14003nsContentUtils::CompareTreePosition<TreeKind::ShadowIncludingDOM>(
14004    const nsINode*, const nsINode*, const nsINode*, NodeIndexCache*);
14005template int32_t
14006nsContentUtils::CompareTreePosition<TreeKind::FlatForSelection>(
14007    const nsINode*, const nsINode*, const nsINode*, NodeIndexCache*);
14008template int32_t nsContentUtils::CompareTreePosition<TreeKind::Flat>(
14009    const nsINode*, const nsINode*, const nsINode*, NodeIndexCache*);

←

/root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/mozilla/ScopeExit.h

1/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

5/* RAII class for executing arbitrary actions at scope end. */

7#ifndef mozilla_ScopeExit_h
8#define mozilla_ScopeExit_h

10/*
* See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4189.pdf for a
* standards-track version of this.
*
* Error handling can be complex when various actions need to be performed that
* need to be undone if an error occurs midway. This can be handled with a
* collection of boolean state variables and gotos, which can get clunky and
* error-prone:
*
* {
*   if (!a.setup())
*       goto fail;
*   isASetup = true;
*
*   if (!b.setup())
*       goto fail;
*   isBSetup = true;
*
*   ...
*   return true;
*
*   fail:
*     if (isASetup)
*         a.teardown();
*     if (isBSetup)
*         b.teardown();
*     return false;
*  }
*
* ScopeExit is a mechanism to simplify this pattern by keeping an RAII guard
* class that will perform the teardown on destruction, unless released. So the
* above would become:
*
* {
*   if (!a.setup()) {
*       return false;
*   }
*   auto guardA = MakeScopeExit([&] {
*       a.teardown();
*   });
*
*   if (!b.setup()) {
*       return false;
*   }
*   auto guardB = MakeScopeExit([&] {
*       b.teardown();
*   });
*
*   ...
*   guardA.release();
*   guardB.release();
*   return true;
* }
*
* This header provides:
*
* - |ScopeExit| - a container for a cleanup call, automically called at the
*   end of the scope;
* - |MakeScopeExit| - a convenience function for constructing a |ScopeExit|
*   with a given cleanup routine, commonly used with a lambda function.
*
* Note that the RAII classes defined in this header do _not_ perform any form
* of reference-counting or garbage-collection. These classes have exactly two
* behaviors:
*
* - if |release()| has not been called, the cleanup is always performed at
*   the end of the scope;
* - if |release()| has been called, nothing will happen at the end of the
*   scope.
*/

81#include <utility>

83#include "mozilla/Attributes.h"

85namespace mozilla {

87template <typename ExitFunction>
88class MOZ_STACK_CLASS ScopeExit {
ExitFunction mExitFunction;
bool mExecuteOnDestruction;

public:
explicit ScopeExit(ExitFunction&& cleanup)
    : mExitFunction(std::move(cleanup)), mExecuteOnDestruction(true) {}

ScopeExit(ScopeExit&& rhs)
    : mExitFunction(std::move(rhs.mExitFunction)),
      mExecuteOnDestruction(rhs.mExecuteOnDestruction) {
  rhs.release();
}

~ScopeExit() {
  if (mExecuteOnDestruction) {
    mExitFunction();
  }
}

void release() { mExecuteOnDestruction = false; }

private:
explicit ScopeExit(const ScopeExit&) = delete;
ScopeExit& operator=(const ScopeExit&) = delete;
ScopeExit& operator=(ScopeExit&&) = delete;
114};

116template <typename ExitFunction>
117[[nodiscard]] ScopeExit<ExitFunction> MakeScopeExit(
  ExitFunction&& exitFunction) {
return ScopeExit<ExitFunction>(std::move(exitFunction));
18
←
Returning without writing to 'exitFunction.', which participates in a condition later→
120}

122} /* namespace mozilla */

124#endif /* mozilla_ScopeExit_h */