| File: | root/firefox-clang/obj-x86_64-pc-linux-gnu/js/src/debugger/./../../../../js/src/debugger/Script.cpp |
| Warning: | line 1263, column 9 Value stored to 'pc' is never read |
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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 | #include "mozilla/Maybe.h" // for Some, Maybe |
| 6 | #include "mozilla/Span.h" // for Span |
| 7 | #include "mozilla/Vector.h" // for Vector |
| 8 | |
| 9 | #include <stddef.h> // for ptrdiff_t |
| 10 | #include <stdint.h> // for uint32_t, UINT32_MAX, SIZE_MAX, int32_t |
| 11 | |
| 12 | #include "NamespaceImports.h" // for CallArgs, RootedValue |
| 13 | |
| 14 | #include "builtin/Array.h" // for NewDenseEmptyArray |
| 15 | #include "builtin/Number.h" // for ToNumber |
| 16 | #include "debugger/Debugger.h" // for DebuggerScriptReferent, Debugger |
| 17 | #include "debugger/DebugScript.h" // for DebugScript |
| 18 | #include "debugger/Source.h" // for DebuggerSource |
| 19 | #include "gc/GC.h" // for MemoryUse, MemoryUse::Breakpoint |
| 20 | #include "gc/Tracer.h" // for TraceManuallyBarrieredCrossCompartmentEdge |
| 21 | #include "gc/Zone.h" // for Zone |
| 22 | #include "gc/ZoneAllocator.h" // for AddCellMemory |
| 23 | #include "js/CallArgs.h" // for CallArgs, CallArgsFromVp |
| 24 | #include "js/ColumnNumber.h" // JS::LimitedColumnNumberOneOrigin, JS::WasmFunctionIndex |
| 25 | #include "js/friend/ErrorMessages.h" // for GetErrorMessage, JSMSG_* |
| 26 | #include "js/GCVariant.h" // for GCVariant |
| 27 | #include "js/HeapAPI.h" // for GCCellPtr |
| 28 | #include "js/RootingAPI.h" // for Rooted |
| 29 | #include "js/Wrapper.h" // for UncheckedUnwrap |
| 30 | #include "vm/ArrayObject.h" // for ArrayObject |
| 31 | #include "vm/BytecodeUtil.h" // for GET_JUMP_OFFSET |
| 32 | #include "vm/Compartment.h" // for JS::Compartment |
| 33 | #include "vm/EnvironmentObject.h" // for EnvironmentCoordinateNameSlow |
| 34 | #include "vm/GlobalObject.h" // for GlobalObject |
| 35 | #include "vm/JSContext.h" // for JSContext, ReportValueError |
| 36 | #include "vm/JSFunction.h" // for JSFunction |
| 37 | #include "vm/JSObject.h" // for RequireObject, JSObject |
| 38 | #include "vm/JSScript.h" // for BaseScript |
| 39 | #include "vm/ObjectOperations.h" // for DefineDataProperty, HasOwnProperty |
| 40 | #include "vm/PlainObject.h" // for js::PlainObject |
| 41 | #include "vm/Realm.h" // for AutoRealm |
| 42 | #include "vm/Runtime.h" // for JSAtomState, JSRuntime |
| 43 | #include "vm/StringType.h" // for NameToId, PropertyName, JSAtom |
| 44 | #include "wasm/WasmDebug.h" // for ExprLoc, DebugState |
| 45 | #include "wasm/WasmInstance.h" // for Instance |
| 46 | #include "wasm/WasmJS.h" // for WasmInstanceObject |
| 47 | #include "wasm/WasmTypeDecls.h" // for Bytes |
| 48 | |
| 49 | #include "debugger/Script-inl.h" |
| 50 | #include "gc/Marking-inl.h" // for MaybeForwardedObjectIs |
| 51 | #include "vm/BytecodeUtil-inl.h" // for BytecodeRangeWithPosition |
| 52 | #include "vm/JSAtomUtils-inl.h" // for PrimitiveValueToId |
| 53 | #include "vm/JSObject-inl.h" // for NewBuiltinClassInstance, NewObjectWithGivenProto |
| 54 | #include "vm/JSScript-inl.h" // for JSScript::global |
| 55 | #include "vm/ObjectOperations-inl.h" // for GetProperty |
| 56 | #include "vm/Realm-inl.h" // for AutoRealm::AutoRealm |
| 57 | |
| 58 | using namespace js; |
| 59 | |
| 60 | using mozilla::Maybe; |
| 61 | using mozilla::Some; |
| 62 | |
| 63 | const JSClassOps DebuggerScript::classOps_ = { |
| 64 | .trace = CallTraceMethod<DebuggerScript>, |
| 65 | }; |
| 66 | |
| 67 | const JSClass DebuggerScript::class_ = { |
| 68 | "Script", |
| 69 | JSCLASS_HAS_RESERVED_SLOTS(RESERVED_SLOTS), |
| 70 | &classOps_, |
| 71 | }; |
| 72 | |
| 73 | void DebuggerScript::trace(JSTracer* trc) { |
| 74 | // This comes from a private pointer, so no barrier needed. |
| 75 | gc::Cell* cell = getReferentCell(); |
| 76 | if (cell) { |
| 77 | if (cell->is<BaseScript>()) { |
| 78 | BaseScript* script = cell->as<BaseScript>(); |
| 79 | TraceManuallyBarrieredCrossCompartmentEdge( |
| 80 | trc, this, &script, "Debugger.Script script referent"); |
| 81 | if (script != cell->as<BaseScript>()) { |
| 82 | setReservedSlotGCThingAsPrivateUnbarriered(SCRIPT_SLOT, script); |
| 83 | } |
| 84 | } else { |
| 85 | JSObject* wasm = cell->as<JSObject>(); |
| 86 | TraceManuallyBarrieredCrossCompartmentEdge( |
| 87 | trc, this, &wasm, "Debugger.Script wasm referent"); |
| 88 | if (wasm != cell->as<JSObject>()) { |
| 89 | MOZ_ASSERT(gc::MaybeForwardedObjectIs<WasmInstanceObject>(wasm))do { static_assert( mozilla::detail::AssertionConditionType< decltype(gc::MaybeForwardedObjectIs<WasmInstanceObject> (wasm))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(gc::MaybeForwardedObjectIs<WasmInstanceObject> (wasm)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("gc::MaybeForwardedObjectIs<WasmInstanceObject>(wasm)" , "./../../../../js/src/debugger/Script.cpp", 89); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "gc::MaybeForwardedObjectIs<WasmInstanceObject>(wasm)" ")"); do { MOZ_CrashSequence(__null, 89); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 90 | setReservedSlotGCThingAsPrivateUnbarriered(SCRIPT_SLOT, wasm); |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /* static */ |
| 97 | NativeObject* DebuggerScript::initClass(JSContext* cx, |
| 98 | Handle<GlobalObject*> global, |
| 99 | HandleObject debugCtor) { |
| 100 | return InitClass(cx, debugCtor, nullptr, nullptr, "Script", construct, 0, |
| 101 | properties_, methods_, nullptr, nullptr); |
| 102 | } |
| 103 | |
| 104 | /* static */ |
| 105 | DebuggerScript* DebuggerScript::create(JSContext* cx, HandleObject proto, |
| 106 | Handle<DebuggerScriptReferent> referent, |
| 107 | Handle<NativeObject*> debugger) { |
| 108 | DebuggerScript* scriptobj = NewObjectWithGivenProto<DebuggerScript>( |
| 109 | cx, proto, {.newKind = TenuredObject}); |
| 110 | if (!scriptobj) { |
| 111 | return nullptr; |
| 112 | } |
| 113 | |
| 114 | scriptobj->setReservedSlot(DebuggerScript::OWNER_SLOT, |
| 115 | ObjectValue(*debugger)); |
| 116 | referent.get().match([&](auto& scriptHandle) { |
| 117 | scriptobj->setReservedSlotGCThingAsPrivate(SCRIPT_SLOT, scriptHandle); |
| 118 | }); |
| 119 | |
| 120 | return scriptobj; |
| 121 | } |
| 122 | |
| 123 | static JSScript* DelazifyScript(JSContext* cx, Handle<BaseScript*> script) { |
| 124 | if (script->hasBytecode()) { |
| 125 | return script->asJSScript(); |
| 126 | } |
| 127 | MOZ_ASSERT(script->isFunction())do { static_assert( mozilla::detail::AssertionConditionType< decltype(script->isFunction())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(script->isFunction()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("script->isFunction()" , "./../../../../js/src/debugger/Script.cpp", 127); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "script->isFunction()" ")"); do { MOZ_CrashSequence (__null, 127); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 128 | |
| 129 | // JSFunction::getOrCreateScript requires an enclosing scope. This requires |
| 130 | // the enclosing script to be non-lazy. |
| 131 | if (script->hasEnclosingScript()) { |
| 132 | Rooted<BaseScript*> enclosingScript(cx, script->enclosingScript()); |
| 133 | if (!DelazifyScript(cx, enclosingScript)) { |
| 134 | return nullptr; |
| 135 | } |
| 136 | |
| 137 | if (!script->isReadyForDelazification()) { |
| 138 | // It didn't work! Delazifying the enclosing script still didn't |
| 139 | // delazify this script. This happens when the function |
| 140 | // corresponding to this script was removed by constant folding. |
| 141 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, |
| 142 | JSMSG_DEBUG_OPTIMIZED_OUT_FUN); |
| 143 | return nullptr; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | MOZ_ASSERT(script->enclosingScope())do { static_assert( mozilla::detail::AssertionConditionType< decltype(script->enclosingScope())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(script->enclosingScope()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("script->enclosingScope()" , "./../../../../js/src/debugger/Script.cpp", 147); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "script->enclosingScope()" ")"); do { MOZ_CrashSequence (__null, 147); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 148 | |
| 149 | RootedFunction fun(cx, script->function()); |
| 150 | AutoRealm ar(cx, fun); |
| 151 | return JSFunction::getOrCreateScript(cx, fun); |
| 152 | } |
| 153 | |
| 154 | /* static */ |
| 155 | DebuggerScript* DebuggerScript::check(JSContext* cx, HandleValue v) { |
| 156 | JSObject* thisobj = RequireObject(cx, v); |
| 157 | if (!thisobj) { |
| 158 | return nullptr; |
| 159 | } |
| 160 | if (!thisobj->is<DebuggerScript>()) { |
| 161 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, |
| 162 | JSMSG_INCOMPATIBLE_PROTO, "Debugger.Script", |
| 163 | "method", thisobj->getClass()->name); |
| 164 | return nullptr; |
| 165 | } |
| 166 | |
| 167 | return &thisobj->as<DebuggerScript>(); |
| 168 | } |
| 169 | |
| 170 | struct MOZ_STACK_CLASS DebuggerScript::CallData { |
| 171 | JSContext* cx; |
| 172 | const CallArgs& args; |
| 173 | |
| 174 | Handle<DebuggerScript*> obj; |
| 175 | Rooted<DebuggerScriptReferent> referent; |
| 176 | RootedScript script; |
| 177 | |
| 178 | CallData(JSContext* cx, const CallArgs& args, Handle<DebuggerScript*> obj) |
| 179 | : cx(cx), |
| 180 | args(args), |
| 181 | obj(obj), |
| 182 | referent(cx, obj->getReferent()), |
| 183 | script(cx) {} |
| 184 | |
| 185 | [[nodiscard]] bool ensureScriptMaybeLazy() { |
| 186 | if (!referent.is<BaseScript*>()) { |
| 187 | ReportValueError(cx, JSMSG_DEBUG_BAD_REFERENT, JSDVG_SEARCH_STACK1, |
| 188 | args.thisv(), nullptr, "a JS script"); |
| 189 | return false; |
| 190 | } |
| 191 | return true; |
| 192 | } |
| 193 | |
| 194 | [[nodiscard]] bool ensureScript() { |
| 195 | if (!ensureScriptMaybeLazy()) { |
| 196 | return false; |
| 197 | } |
| 198 | script = DelazifyScript(cx, referent.as<BaseScript*>()); |
| 199 | if (!script) { |
| 200 | return false; |
| 201 | } |
| 202 | return true; |
| 203 | } |
| 204 | |
| 205 | bool getIsGeneratorFunction(); |
| 206 | bool getIsAsyncFunction(); |
| 207 | bool getIsFunction(); |
| 208 | bool getIsModule(); |
| 209 | bool getDisplayName(); |
| 210 | bool getParameterNames(); |
| 211 | bool getUrl(); |
| 212 | bool getStartLine(); |
| 213 | bool getStartColumn(); |
| 214 | bool getLineCount(); |
| 215 | bool getSource(); |
| 216 | bool getSourceStart(); |
| 217 | bool getSourceLength(); |
| 218 | bool getMainOffset(); |
| 219 | bool getGlobal(); |
| 220 | bool getFormat(); |
| 221 | bool getChildScripts(); |
| 222 | bool getPossibleBreakpoints(); |
| 223 | bool getPossibleBreakpointOffsets(); |
| 224 | bool getOffsetMetadata(); |
| 225 | bool getOffsetLocation(); |
| 226 | bool getEffectfulOffsets(); |
| 227 | bool getAllOffsets(); |
| 228 | bool getAllColumnOffsets(); |
| 229 | bool getLineOffsets(); |
| 230 | bool setBreakpoint(); |
| 231 | bool getBreakpoints(); |
| 232 | bool clearBreakpoint(); |
| 233 | bool clearAllBreakpoints(); |
| 234 | bool isInCatchScope(); |
| 235 | bool getOffsetsCoverage(); |
| 236 | |
| 237 | using Method = bool (CallData::*)(); |
| 238 | |
| 239 | template <Method MyMethod> |
| 240 | static bool ToNative(JSContext* cx, unsigned argc, Value* vp); |
| 241 | }; |
| 242 | |
| 243 | template <DebuggerScript::CallData::Method MyMethod> |
| 244 | /* static */ |
| 245 | bool DebuggerScript::CallData::ToNative(JSContext* cx, unsigned argc, |
| 246 | Value* vp) { |
| 247 | CallArgs args = CallArgsFromVp(argc, vp); |
| 248 | |
| 249 | Rooted<DebuggerScript*> obj(cx, DebuggerScript::check(cx, args.thisv())); |
| 250 | if (!obj) { |
| 251 | return false; |
| 252 | } |
| 253 | |
| 254 | CallData data(cx, args, obj); |
| 255 | return (data.*MyMethod)(); |
| 256 | } |
| 257 | |
| 258 | bool DebuggerScript::CallData::getIsGeneratorFunction() { |
| 259 | if (!ensureScriptMaybeLazy()) { |
| 260 | return false; |
| 261 | } |
| 262 | args.rval().setBoolean(obj->getReferentScript()->isGenerator()); |
| 263 | return true; |
| 264 | } |
| 265 | |
| 266 | bool DebuggerScript::CallData::getIsAsyncFunction() { |
| 267 | if (!ensureScriptMaybeLazy()) { |
| 268 | return false; |
| 269 | } |
| 270 | args.rval().setBoolean(obj->getReferentScript()->isAsync()); |
| 271 | return true; |
| 272 | } |
| 273 | |
| 274 | bool DebuggerScript::CallData::getIsFunction() { |
| 275 | if (!ensureScriptMaybeLazy()) { |
| 276 | return false; |
| 277 | } |
| 278 | |
| 279 | args.rval().setBoolean(obj->getReferentScript()->function()); |
| 280 | return true; |
| 281 | } |
| 282 | |
| 283 | bool DebuggerScript::CallData::getIsModule() { |
| 284 | if (!ensureScriptMaybeLazy()) { |
| 285 | return false; |
| 286 | } |
| 287 | BaseScript* script = referent.as<BaseScript*>(); |
| 288 | |
| 289 | args.rval().setBoolean(script->isModule()); |
| 290 | return true; |
| 291 | } |
| 292 | |
| 293 | bool DebuggerScript::CallData::getDisplayName() { |
| 294 | if (!ensureScriptMaybeLazy()) { |
| 295 | return false; |
| 296 | } |
| 297 | |
| 298 | JSFunction* func = obj->getReferentScript()->function(); |
| 299 | if (!func) { |
| 300 | args.rval().setUndefined(); |
| 301 | return true; |
| 302 | } |
| 303 | |
| 304 | JSAtom* name = func->fullDisplayAtom(); |
| 305 | if (!name) { |
| 306 | args.rval().setUndefined(); |
| 307 | return true; |
| 308 | } |
| 309 | |
| 310 | RootedValue namev(cx, StringValue(name)); |
| 311 | Debugger* dbg = obj->owner(); |
| 312 | if (!dbg->wrapDebuggeeValue(cx, &namev)) { |
| 313 | return false; |
| 314 | } |
| 315 | args.rval().set(namev); |
| 316 | return true; |
| 317 | } |
| 318 | |
| 319 | bool DebuggerScript::CallData::getParameterNames() { |
| 320 | if (!ensureScript()) { |
| 321 | return false; |
| 322 | } |
| 323 | |
| 324 | RootedFunction fun(cx, referent.as<BaseScript*>()->function()); |
| 325 | if (!fun) { |
| 326 | args.rval().setUndefined(); |
| 327 | return true; |
| 328 | } |
| 329 | |
| 330 | ArrayObject* arr = GetFunctionParameterNamesArray(cx, fun); |
| 331 | if (!arr) { |
| 332 | return false; |
| 333 | } |
| 334 | |
| 335 | args.rval().setObject(*arr); |
| 336 | return true; |
| 337 | } |
| 338 | |
| 339 | bool DebuggerScript::CallData::getUrl() { |
| 340 | if (!ensureScriptMaybeLazy()) { |
| 341 | return false; |
| 342 | } |
| 343 | |
| 344 | Rooted<BaseScript*> script(cx, referent.as<BaseScript*>()); |
| 345 | |
| 346 | if (script->filename()) { |
| 347 | JSString* str; |
| 348 | if (const char* introducer = script->scriptSource()->introducerFilename()) { |
| 349 | str = |
| 350 | NewStringCopyUTF8N(cx, JS::UTF8Chars(introducer, strlen(introducer))); |
| 351 | } else { |
| 352 | const char* filename = script->filename(); |
| 353 | str = NewStringCopyUTF8N(cx, JS::UTF8Chars(filename, strlen(filename))); |
| 354 | } |
| 355 | if (!str) { |
| 356 | return false; |
| 357 | } |
| 358 | args.rval().setString(str); |
| 359 | } else { |
| 360 | args.rval().setNull(); |
| 361 | } |
| 362 | return true; |
| 363 | } |
| 364 | |
| 365 | bool DebuggerScript::CallData::getStartLine() { |
| 366 | args.rval().setNumber( |
| 367 | referent.get().match([](BaseScript*& s) { return s->lineno(); }, |
| 368 | [](WasmInstanceObject*&) { return (uint32_t)1; })); |
| 369 | return true; |
| 370 | } |
| 371 | |
| 372 | bool DebuggerScript::CallData::getStartColumn() { |
| 373 | JS::LimitedColumnNumberOneOrigin column = referent.get().match( |
| 374 | [](BaseScript*& s) { return s->column(); }, |
| 375 | [](WasmInstanceObject*&) { |
| 376 | return JS::LimitedColumnNumberOneOrigin( |
| 377 | JS::WasmFunctionIndex::DefaultBinarySourceColumnNumberOneOrigin); |
| 378 | }); |
| 379 | args.rval().setNumber(column.oneOriginValue()); |
| 380 | return true; |
| 381 | } |
| 382 | |
| 383 | struct DebuggerScript::GetLineCountMatcher { |
| 384 | JSContext* cx_; |
| 385 | double totalLines; |
| 386 | |
| 387 | explicit GetLineCountMatcher(JSContext* cx) : cx_(cx), totalLines(0.0) {} |
| 388 | using ReturnType = bool; |
| 389 | |
| 390 | ReturnType match(Handle<BaseScript*> base) { |
| 391 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 392 | if (!script) { |
| 393 | return false; |
| 394 | } |
| 395 | totalLines = double(GetScriptLineExtent(script)); |
| 396 | return true; |
| 397 | } |
| 398 | ReturnType match(Handle<WasmInstanceObject*> instanceObj) { |
| 399 | wasm::Instance& instance = instanceObj->instance(); |
| 400 | if (instance.debugEnabled()) { |
| 401 | totalLines = double(instance.debug().bytecode().length()); |
| 402 | } else { |
| 403 | totalLines = 0; |
| 404 | } |
| 405 | return true; |
| 406 | } |
| 407 | }; |
| 408 | |
| 409 | bool DebuggerScript::CallData::getLineCount() { |
| 410 | GetLineCountMatcher matcher(cx); |
| 411 | if (!referent.match(matcher)) { |
| 412 | return false; |
| 413 | } |
| 414 | args.rval().setNumber(matcher.totalLines); |
| 415 | return true; |
| 416 | } |
| 417 | |
| 418 | class DebuggerScript::GetSourceMatcher { |
| 419 | JSContext* cx_; |
| 420 | Debugger* dbg_; |
| 421 | |
| 422 | public: |
| 423 | GetSourceMatcher(JSContext* cx, Debugger* dbg) : cx_(cx), dbg_(dbg) {} |
| 424 | |
| 425 | using ReturnType = DebuggerSource*; |
| 426 | |
| 427 | ReturnType match(Handle<BaseScript*> script) { |
| 428 | Rooted<ScriptSourceObject*> source(cx_, script->sourceObject()); |
| 429 | return dbg_->wrapSource(cx_, source); |
| 430 | } |
| 431 | ReturnType match(Handle<WasmInstanceObject*> wasmInstance) { |
| 432 | return dbg_->wrapWasmSource(cx_, wasmInstance); |
| 433 | } |
| 434 | }; |
| 435 | |
| 436 | bool DebuggerScript::CallData::getSource() { |
| 437 | Debugger* dbg = obj->owner(); |
| 438 | |
| 439 | GetSourceMatcher matcher(cx, dbg); |
| 440 | Rooted<DebuggerSource*> sourceObject(cx, referent.match(matcher)); |
| 441 | if (!sourceObject) { |
| 442 | return false; |
| 443 | } |
| 444 | |
| 445 | args.rval().setObject(*sourceObject); |
| 446 | return true; |
| 447 | } |
| 448 | |
| 449 | bool DebuggerScript::CallData::getSourceStart() { |
| 450 | if (!ensureScriptMaybeLazy()) { |
| 451 | return false; |
| 452 | } |
| 453 | args.rval().setNumber(uint32_t(obj->getReferentScript()->sourceStart())); |
| 454 | return true; |
| 455 | } |
| 456 | |
| 457 | bool DebuggerScript::CallData::getSourceLength() { |
| 458 | if (!ensureScriptMaybeLazy()) { |
| 459 | return false; |
| 460 | } |
| 461 | args.rval().setNumber(uint32_t(obj->getReferentScript()->sourceLength())); |
| 462 | return true; |
| 463 | } |
| 464 | |
| 465 | bool DebuggerScript::CallData::getMainOffset() { |
| 466 | if (!ensureScript()) { |
| 467 | return false; |
| 468 | } |
| 469 | args.rval().setNumber(uint32_t(script->mainOffset())); |
| 470 | return true; |
| 471 | } |
| 472 | |
| 473 | bool DebuggerScript::CallData::getGlobal() { |
| 474 | if (!ensureScript()) { |
| 475 | return false; |
| 476 | } |
| 477 | Debugger* dbg = obj->owner(); |
| 478 | |
| 479 | RootedValue v(cx, ObjectValue(script->global())); |
| 480 | if (!dbg->wrapDebuggeeValue(cx, &v)) { |
| 481 | return false; |
| 482 | } |
| 483 | args.rval().set(v); |
| 484 | return true; |
| 485 | } |
| 486 | |
| 487 | bool DebuggerScript::CallData::getFormat() { |
| 488 | args.rval().setString(referent.get().match( |
| 489 | [this](BaseScript*&) { return cx->names().js.get(); }, |
| 490 | [this](WasmInstanceObject*&) { return cx->names().wasm.get(); })); |
| 491 | return true; |
| 492 | } |
| 493 | |
| 494 | static bool PushFunctionScript(JSContext* cx, Debugger* dbg, HandleFunction fun, |
| 495 | HandleObject array) { |
| 496 | if (!IsInterpretedNonSelfHostedFunction(fun)) { |
| 497 | return true; |
| 498 | } |
| 499 | |
| 500 | Rooted<BaseScript*> script(cx, fun->baseScript()); |
| 501 | MOZ_ASSERT(script)do { static_assert( mozilla::detail::AssertionConditionType< decltype(script)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(script))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("script", "./../../../../js/src/debugger/Script.cpp" , 501); AnnotateMozCrashReason("MOZ_ASSERT" "(" "script" ")") ; do { MOZ_CrashSequence(__null, 501); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 502 | if (!script) { |
| 503 | // If the function doesn't have script, ignore it. |
| 504 | return true; |
| 505 | } |
| 506 | RootedObject wrapped(cx, dbg->wrapScript(cx, script)); |
| 507 | if (!wrapped) { |
| 508 | return false; |
| 509 | } |
| 510 | |
| 511 | return NewbornArrayPush(cx, array, ObjectValue(*wrapped)); |
| 512 | } |
| 513 | |
| 514 | static bool PushInnerFunctions(JSContext* cx, Debugger* dbg, HandleObject array, |
| 515 | mozilla::Span<const JS::GCCellPtr> gcThings) { |
| 516 | RootedFunction fun(cx); |
| 517 | |
| 518 | for (JS::GCCellPtr gcThing : gcThings) { |
| 519 | if (!gcThing.is<JSObject>()) { |
| 520 | continue; |
| 521 | } |
| 522 | |
| 523 | JSObject* obj = &gcThing.as<JSObject>(); |
| 524 | if (obj->is<JSFunction>()) { |
| 525 | fun = &obj->as<JSFunction>(); |
| 526 | |
| 527 | // Ignore any delazification placeholder functions. These should not be |
| 528 | // exposed to debugger in any way. |
| 529 | if (fun->isGhost()) { |
| 530 | continue; |
| 531 | } |
| 532 | |
| 533 | if (!PushFunctionScript(cx, dbg, fun, array)) { |
| 534 | return false; |
| 535 | } |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | return true; |
| 540 | } |
| 541 | |
| 542 | bool DebuggerScript::CallData::getChildScripts() { |
| 543 | if (!ensureScriptMaybeLazy()) { |
| 544 | return false; |
| 545 | } |
| 546 | Debugger* dbg = obj->owner(); |
| 547 | |
| 548 | RootedObject result(cx, NewDenseEmptyArray(cx)); |
| 549 | if (!result) { |
| 550 | return false; |
| 551 | } |
| 552 | |
| 553 | Rooted<BaseScript*> script(cx, obj->getReferent().as<BaseScript*>()); |
| 554 | if (!PushInnerFunctions(cx, dbg, result, script->gcthings())) { |
| 555 | return false; |
| 556 | } |
| 557 | |
| 558 | args.rval().setObject(*result); |
| 559 | return true; |
| 560 | } |
| 561 | |
| 562 | static bool ScriptOffset(JSContext* cx, const Value& v, size_t* offsetp) { |
| 563 | double d; |
| 564 | size_t off; |
| 565 | |
| 566 | bool ok = v.isNumber(); |
| 567 | if (ok) { |
| 568 | d = v.toNumber(); |
| 569 | off = size_t(d); |
| 570 | } |
| 571 | if (!ok || off != d) { |
| 572 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, |
| 573 | JSMSG_DEBUG_BAD_OFFSET); |
| 574 | return false; |
| 575 | } |
| 576 | *offsetp = off; |
| 577 | return true; |
| 578 | } |
| 579 | |
| 580 | static bool EnsureScriptOffsetIsValid(JSContext* cx, JSScript* script, |
| 581 | size_t offset) { |
| 582 | if (IsValidBytecodeOffset(cx, script, offset)) { |
| 583 | return true; |
| 584 | } |
| 585 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, |
| 586 | JSMSG_DEBUG_BAD_OFFSET); |
| 587 | return false; |
| 588 | } |
| 589 | |
| 590 | static bool IsGeneratorSlotInitialization(JSScript* script, size_t offset, |
| 591 | JSContext* cx) { |
| 592 | jsbytecode* pc = script->offsetToPC(offset); |
| 593 | if (JSOp(*pc) != JSOp::SetAliasedVar) { |
| 594 | return false; |
| 595 | } |
| 596 | |
| 597 | PropertyName* name = EnvironmentCoordinateNameSlow(script, pc); |
| 598 | return name == cx->names().dot_generator_; |
| 599 | } |
| 600 | |
| 601 | static bool EnsureBreakpointIsAllowed(JSContext* cx, JSScript* script, |
| 602 | size_t offset) { |
| 603 | // Disallow breakpoint for `JSOp::SetAliasedVar` after `JSOp::Generator`. |
| 604 | // Those 2 instructions are supposed to be atomic, and nothing should happen |
| 605 | // in between them. |
| 606 | // |
| 607 | // Hitting a breakpoint there breaks the assumption around the existence of |
| 608 | // the frame's `GeneratorInfo`. |
| 609 | // (see `DebugAPI::slowPathOnNewGenerator` and `DebuggerFrame::create`) |
| 610 | if (IsGeneratorSlotInitialization(script, offset, cx)) { |
| 611 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, |
| 612 | JSMSG_DEBUG_BREAKPOINT_NOT_ALLOWED); |
| 613 | return false; |
| 614 | } |
| 615 | |
| 616 | return true; |
| 617 | } |
| 618 | |
| 619 | template <bool OnlyOffsets> |
| 620 | class DebuggerScript::GetPossibleBreakpointsMatcher { |
| 621 | JSContext* cx_; |
| 622 | MutableHandleObject result_; |
| 623 | |
| 624 | Maybe<size_t> minOffset; |
| 625 | Maybe<size_t> maxOffset; |
| 626 | |
| 627 | Maybe<uint32_t> minLine; |
| 628 | JS::LimitedColumnNumberOneOrigin minColumn; |
| 629 | Maybe<uint32_t> maxLine; |
| 630 | JS::LimitedColumnNumberOneOrigin maxColumn; |
| 631 | |
| 632 | bool passesQuery(size_t offset, uint32_t lineno, |
| 633 | JS::LimitedColumnNumberOneOrigin colno) { |
| 634 | // [minOffset, maxOffset) - Inclusive minimum and exclusive maximum. |
| 635 | if ((minOffset && offset < *minOffset) || |
| 636 | (maxOffset && offset >= *maxOffset)) { |
| 637 | return false; |
| 638 | } |
| 639 | |
| 640 | if (minLine) { |
| 641 | if (lineno < *minLine || (lineno == *minLine && colno < minColumn)) { |
| 642 | return false; |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | if (maxLine) { |
| 647 | if (lineno > *maxLine || (lineno == *maxLine && colno >= maxColumn)) { |
| 648 | return false; |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | return true; |
| 653 | } |
| 654 | |
| 655 | bool maybeAppendEntry(size_t offset, uint32_t lineno, |
| 656 | JS::LimitedColumnNumberOneOrigin colno, |
| 657 | bool isStepStart) { |
| 658 | if (!passesQuery(offset, lineno, colno)) { |
| 659 | return true; |
| 660 | } |
| 661 | |
| 662 | if (OnlyOffsets) { |
| 663 | if (!NewbornArrayPush(cx_, result_, NumberValue(offset))) { |
| 664 | return false; |
| 665 | } |
| 666 | |
| 667 | return true; |
| 668 | } |
| 669 | |
| 670 | Rooted<PlainObject*> entry(cx_, NewPlainObject(cx_)); |
| 671 | if (!entry) { |
| 672 | return false; |
| 673 | } |
| 674 | |
| 675 | RootedValue value(cx_, NumberValue(offset)); |
| 676 | if (!DefineDataProperty(cx_, entry, cx_->names().offset, value)) { |
| 677 | return false; |
| 678 | } |
| 679 | |
| 680 | value = NumberValue(lineno); |
| 681 | if (!DefineDataProperty(cx_, entry, cx_->names().lineNumber, value)) { |
| 682 | return false; |
| 683 | } |
| 684 | |
| 685 | value = NumberValue(colno.oneOriginValue()); |
| 686 | if (!DefineDataProperty(cx_, entry, cx_->names().columnNumber, value)) { |
| 687 | return false; |
| 688 | } |
| 689 | |
| 690 | value = BooleanValue(isStepStart); |
| 691 | if (!DefineDataProperty(cx_, entry, cx_->names().isStepStart, value)) { |
| 692 | return false; |
| 693 | } |
| 694 | |
| 695 | if (!NewbornArrayPush(cx_, result_, ObjectValue(*entry))) { |
| 696 | return false; |
| 697 | } |
| 698 | return true; |
| 699 | } |
| 700 | |
| 701 | template <typename T> |
| 702 | bool parseIntValueImpl(HandleValue value, T* result) { |
| 703 | if (!value.isNumber()) { |
| 704 | return false; |
| 705 | } |
| 706 | |
| 707 | double doubleOffset = value.toNumber(); |
| 708 | if (doubleOffset < 0 || (unsigned int)doubleOffset != doubleOffset) { |
| 709 | return false; |
| 710 | } |
| 711 | |
| 712 | *result = doubleOffset; |
| 713 | return true; |
| 714 | } |
| 715 | |
| 716 | bool parseUint32Value(HandleValue value, uint32_t* result) { |
| 717 | return parseIntValueImpl(value, result); |
| 718 | } |
| 719 | bool parseColumnValue(HandleValue value, |
| 720 | JS::LimitedColumnNumberOneOrigin* result) { |
| 721 | uint32_t tmp; |
| 722 | if (!parseIntValueImpl(value, &tmp)) { |
| 723 | return false; |
| 724 | } |
| 725 | if (tmp == 0) { |
| 726 | return false; |
| 727 | } |
| 728 | *result->addressOfValueForTranscode() = tmp; |
| 729 | if (!result->valid()) { |
| 730 | return false; |
| 731 | } |
| 732 | return true; |
| 733 | } |
| 734 | bool parseSizeTValue(HandleValue value, size_t* result) { |
| 735 | return parseIntValueImpl(value, result); |
| 736 | } |
| 737 | |
| 738 | template <typename T> |
| 739 | bool parseIntValueMaybeImpl(HandleValue value, Maybe<T>* result) { |
| 740 | T result_; |
| 741 | if (!parseIntValueImpl(value, &result_)) { |
| 742 | return false; |
| 743 | } |
| 744 | |
| 745 | *result = Some(result_); |
| 746 | return true; |
| 747 | } |
| 748 | |
| 749 | bool parseUint32Value(HandleValue value, Maybe<uint32_t>* result) { |
| 750 | return parseIntValueMaybeImpl(value, result); |
| 751 | } |
| 752 | bool parseSizeTValue(HandleValue value, Maybe<size_t>* result) { |
| 753 | return parseIntValueMaybeImpl(value, result); |
| 754 | } |
| 755 | |
| 756 | public: |
| 757 | explicit GetPossibleBreakpointsMatcher(JSContext* cx, |
| 758 | MutableHandleObject result) |
| 759 | : cx_(cx), result_(result) {} |
| 760 | |
| 761 | bool parseQuery(HandleObject query) { |
| 762 | RootedValue lineValue(cx_); |
| 763 | if (!GetProperty(cx_, query, query, cx_->names().line, &lineValue)) { |
| 764 | return false; |
| 765 | } |
| 766 | |
| 767 | RootedValue minLineValue(cx_); |
| 768 | if (!GetProperty(cx_, query, query, cx_->names().minLine, &minLineValue)) { |
| 769 | return false; |
| 770 | } |
| 771 | |
| 772 | RootedValue minColumnValue(cx_); |
| 773 | if (!GetProperty(cx_, query, query, cx_->names().minColumn, |
| 774 | &minColumnValue)) { |
| 775 | return false; |
| 776 | } |
| 777 | |
| 778 | RootedValue minOffsetValue(cx_); |
| 779 | if (!GetProperty(cx_, query, query, cx_->names().minOffset, |
| 780 | &minOffsetValue)) { |
| 781 | return false; |
| 782 | } |
| 783 | |
| 784 | RootedValue maxLineValue(cx_); |
| 785 | if (!GetProperty(cx_, query, query, cx_->names().maxLine, &maxLineValue)) { |
| 786 | return false; |
| 787 | } |
| 788 | |
| 789 | RootedValue maxColumnValue(cx_); |
| 790 | if (!GetProperty(cx_, query, query, cx_->names().maxColumn, |
| 791 | &maxColumnValue)) { |
| 792 | return false; |
| 793 | } |
| 794 | |
| 795 | RootedValue maxOffsetValue(cx_); |
| 796 | if (!GetProperty(cx_, query, query, cx_->names().maxOffset, |
| 797 | &maxOffsetValue)) { |
| 798 | return false; |
| 799 | } |
| 800 | |
| 801 | if (!minOffsetValue.isUndefined()) { |
| 802 | if (!parseSizeTValue(minOffsetValue, &minOffset)) { |
| 803 | JS_ReportErrorNumberASCII( |
| 804 | cx_, GetErrorMessage, nullptr, JSMSG_UNEXPECTED_TYPE, |
| 805 | "getPossibleBreakpoints' 'minOffset'", "not an integer"); |
| 806 | return false; |
| 807 | } |
| 808 | } |
| 809 | if (!maxOffsetValue.isUndefined()) { |
| 810 | if (!parseSizeTValue(maxOffsetValue, &maxOffset)) { |
| 811 | JS_ReportErrorNumberASCII( |
| 812 | cx_, GetErrorMessage, nullptr, JSMSG_UNEXPECTED_TYPE, |
| 813 | "getPossibleBreakpoints' 'maxOffset'", "not an integer"); |
| 814 | return false; |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | if (!lineValue.isUndefined()) { |
| 819 | if (!minLineValue.isUndefined() || !maxLineValue.isUndefined()) { |
| 820 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 821 | JSMSG_UNEXPECTED_TYPE, |
| 822 | "getPossibleBreakpoints' 'line'", |
| 823 | "not allowed alongside 'minLine'/'maxLine'"); |
| 824 | return false; |
| 825 | } |
| 826 | |
| 827 | uint32_t line; |
| 828 | if (!parseUint32Value(lineValue, &line)) { |
| 829 | JS_ReportErrorNumberASCII( |
| 830 | cx_, GetErrorMessage, nullptr, JSMSG_UNEXPECTED_TYPE, |
| 831 | "getPossibleBreakpoints' 'line'", "not an integer"); |
| 832 | return false; |
| 833 | } |
| 834 | |
| 835 | // If no end column is given, we use the default of 0 and wrap to |
| 836 | // the next line. |
| 837 | minLine = Some(line); |
| 838 | maxLine = Some(line + (maxColumnValue.isUndefined() ? 1 : 0)); |
| 839 | } |
| 840 | |
| 841 | if (!minLineValue.isUndefined()) { |
| 842 | if (!parseUint32Value(minLineValue, &minLine)) { |
| 843 | JS_ReportErrorNumberASCII( |
| 844 | cx_, GetErrorMessage, nullptr, JSMSG_UNEXPECTED_TYPE, |
| 845 | "getPossibleBreakpoints' 'minLine'", "not an integer"); |
| 846 | return false; |
| 847 | } |
| 848 | } |
| 849 | |
| 850 | if (!minColumnValue.isUndefined()) { |
| 851 | if (!minLine) { |
| 852 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 853 | JSMSG_UNEXPECTED_TYPE, |
| 854 | "getPossibleBreakpoints' 'minColumn'", |
| 855 | "not allowed without 'line' or 'minLine'"); |
| 856 | return false; |
| 857 | } |
| 858 | |
| 859 | if (!parseColumnValue(minColumnValue, &minColumn)) { |
| 860 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 861 | JSMSG_UNEXPECTED_TYPE, |
| 862 | "getPossibleBreakpoints' 'minColumn'", |
| 863 | "not a positive integer in valid range"); |
| 864 | return false; |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | if (!maxLineValue.isUndefined()) { |
| 869 | if (!parseUint32Value(maxLineValue, &maxLine)) { |
| 870 | JS_ReportErrorNumberASCII( |
| 871 | cx_, GetErrorMessage, nullptr, JSMSG_UNEXPECTED_TYPE, |
| 872 | "getPossibleBreakpoints' 'maxLine'", "not an integer"); |
| 873 | return false; |
| 874 | } |
| 875 | } |
| 876 | |
| 877 | if (!maxColumnValue.isUndefined()) { |
| 878 | if (!maxLine) { |
| 879 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 880 | JSMSG_UNEXPECTED_TYPE, |
| 881 | "getPossibleBreakpoints' 'maxColumn'", |
| 882 | "not allowed without 'line' or 'maxLine'"); |
| 883 | return false; |
| 884 | } |
| 885 | |
| 886 | if (!parseColumnValue(maxColumnValue, &maxColumn)) { |
| 887 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 888 | JSMSG_UNEXPECTED_TYPE, |
| 889 | "getPossibleBreakpoints' 'maxColumn'", |
| 890 | "not a positive integer in valid range"); |
| 891 | return false; |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | return true; |
| 896 | } |
| 897 | |
| 898 | using ReturnType = bool; |
| 899 | ReturnType match(Handle<BaseScript*> base) { |
| 900 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 901 | if (!script) { |
| 902 | return false; |
| 903 | } |
| 904 | |
| 905 | // Second pass: build the result array. |
| 906 | result_.set(NewDenseEmptyArray(cx_)); |
| 907 | if (!result_) { |
| 908 | return false; |
| 909 | } |
| 910 | |
| 911 | for (BytecodeRangeWithPosition r(cx_, script, SkipPrologueOps::Yes); |
| 912 | !r.empty(); r.popFront()) { |
| 913 | if (!r.frontIsBreakablePoint()) { |
| 914 | continue; |
| 915 | } |
| 916 | |
| 917 | size_t offset = r.frontOffset(); |
| 918 | uint32_t lineno = r.frontLineNumber(); |
| 919 | JS::LimitedColumnNumberOneOrigin colno = r.frontColumnNumber(); |
| 920 | |
| 921 | if (!maybeAppendEntry(offset, lineno, colno, |
| 922 | r.frontIsBreakableStepPoint())) { |
| 923 | return false; |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | return true; |
| 928 | } |
| 929 | ReturnType match(Handle<WasmInstanceObject*> instanceObj) { |
| 930 | wasm::Instance& instance = instanceObj->instance(); |
| 931 | |
| 932 | Vector<wasm::ExprLoc> offsets(cx_); |
| 933 | if (instance.debugEnabled() && |
| 934 | !instance.debug().getAllColumnOffsets(&offsets)) { |
| 935 | return false; |
| 936 | } |
| 937 | |
| 938 | result_.set(NewDenseEmptyArray(cx_)); |
| 939 | if (!result_) { |
| 940 | return false; |
| 941 | } |
| 942 | |
| 943 | for (uint32_t i = 0; i < offsets.length(); i++) { |
| 944 | uint32_t lineno = offsets[i].lineno; |
| 945 | JS::LimitedColumnNumberOneOrigin column(offsets[i].column); |
| 946 | size_t offset = offsets[i].offset; |
| 947 | if (!maybeAppendEntry(offset, lineno, column, true)) { |
| 948 | return false; |
| 949 | } |
| 950 | } |
| 951 | return true; |
| 952 | } |
| 953 | }; |
| 954 | |
| 955 | bool DebuggerScript::CallData::getPossibleBreakpoints() { |
| 956 | RootedObject result(cx); |
| 957 | GetPossibleBreakpointsMatcher<false> matcher(cx, &result); |
| 958 | if (args.length() >= 1 && !args[0].isUndefined()) { |
| 959 | RootedObject queryObject(cx, RequireObject(cx, args[0])); |
| 960 | if (!queryObject || !matcher.parseQuery(queryObject)) { |
| 961 | return false; |
| 962 | } |
| 963 | } |
| 964 | if (!referent.match(matcher)) { |
| 965 | return false; |
| 966 | } |
| 967 | |
| 968 | args.rval().setObject(*result); |
| 969 | return true; |
| 970 | } |
| 971 | |
| 972 | bool DebuggerScript::CallData::getPossibleBreakpointOffsets() { |
| 973 | RootedObject result(cx); |
| 974 | GetPossibleBreakpointsMatcher<true> matcher(cx, &result); |
| 975 | if (args.length() >= 1 && !args[0].isUndefined()) { |
| 976 | RootedObject queryObject(cx, RequireObject(cx, args[0])); |
| 977 | if (!queryObject || !matcher.parseQuery(queryObject)) { |
| 978 | return false; |
| 979 | } |
| 980 | } |
| 981 | if (!referent.match(matcher)) { |
| 982 | return false; |
| 983 | } |
| 984 | |
| 985 | args.rval().setObject(*result); |
| 986 | return true; |
| 987 | } |
| 988 | |
| 989 | class DebuggerScript::GetOffsetMetadataMatcher { |
| 990 | JSContext* cx_; |
| 991 | size_t offset_; |
| 992 | MutableHandle<PlainObject*> result_; |
| 993 | |
| 994 | public: |
| 995 | explicit GetOffsetMetadataMatcher(JSContext* cx, size_t offset, |
| 996 | MutableHandle<PlainObject*> result) |
| 997 | : cx_(cx), offset_(offset), result_(result) {} |
| 998 | using ReturnType = bool; |
| 999 | ReturnType match(Handle<BaseScript*> base) { |
| 1000 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 1001 | if (!script) { |
| 1002 | return false; |
| 1003 | } |
| 1004 | |
| 1005 | if (!EnsureScriptOffsetIsValid(cx_, script, offset_)) { |
| 1006 | return false; |
| 1007 | } |
| 1008 | |
| 1009 | result_.set(NewPlainObject(cx_)); |
| 1010 | if (!result_) { |
| 1011 | return false; |
| 1012 | } |
| 1013 | |
| 1014 | // Use SkipPrologueOps::No to ensure we return isBreakpoint = false and |
| 1015 | // isStepStart = false for prologue ops, instead of the metadata for the |
| 1016 | // first 'main' op. |
| 1017 | BytecodeRangeWithPosition r(cx_, script, SkipPrologueOps::No); |
| 1018 | while (!r.empty() && r.frontOffset() < offset_) { |
| 1019 | r.popFront(); |
| 1020 | } |
| 1021 | MOZ_ASSERT(r.frontOffset() == offset_)do { static_assert( mozilla::detail::AssertionConditionType< decltype(r.frontOffset() == offset_)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(r.frontOffset() == offset_)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("r.frontOffset() == offset_" , "./../../../../js/src/debugger/Script.cpp", 1021); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "r.frontOffset() == offset_" ")"); do { MOZ_CrashSequence (__null, 1021); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1022 | |
| 1023 | RootedValue value(cx_, NumberValue(r.frontLineNumber())); |
| 1024 | if (!DefineDataProperty(cx_, result_, cx_->names().lineNumber, value)) { |
| 1025 | return false; |
| 1026 | } |
| 1027 | |
| 1028 | value = NumberValue(r.frontColumnNumber().oneOriginValue()); |
| 1029 | if (!DefineDataProperty(cx_, result_, cx_->names().columnNumber, value)) { |
| 1030 | return false; |
| 1031 | } |
| 1032 | |
| 1033 | value = BooleanValue(r.frontIsBreakablePoint()); |
| 1034 | if (!DefineDataProperty(cx_, result_, cx_->names().isBreakpoint, value)) { |
| 1035 | return false; |
| 1036 | } |
| 1037 | |
| 1038 | value = BooleanValue(r.frontIsBreakableStepPoint()); |
| 1039 | if (!DefineDataProperty(cx_, result_, cx_->names().isStepStart, value)) { |
| 1040 | return false; |
| 1041 | } |
| 1042 | |
| 1043 | return true; |
| 1044 | } |
| 1045 | ReturnType match(Handle<WasmInstanceObject*> instanceObj) { |
| 1046 | wasm::Instance& instance = instanceObj->instance(); |
| 1047 | if (!instance.debugEnabled()) { |
| 1048 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 1049 | JSMSG_DEBUG_BAD_OFFSET); |
| 1050 | return false; |
| 1051 | } |
| 1052 | |
| 1053 | uint32_t lineno; |
| 1054 | JS::LimitedColumnNumberOneOrigin column; |
| 1055 | if (!instance.debug().getOffsetLocation(offset_, &lineno, &column)) { |
| 1056 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 1057 | JSMSG_DEBUG_BAD_OFFSET); |
| 1058 | return false; |
| 1059 | } |
| 1060 | |
| 1061 | result_.set(NewPlainObject(cx_)); |
| 1062 | if (!result_) { |
| 1063 | return false; |
| 1064 | } |
| 1065 | |
| 1066 | RootedValue value(cx_, NumberValue(lineno)); |
| 1067 | if (!DefineDataProperty(cx_, result_, cx_->names().lineNumber, value)) { |
| 1068 | return false; |
| 1069 | } |
| 1070 | |
| 1071 | value = NumberValue(column.oneOriginValue()); |
| 1072 | if (!DefineDataProperty(cx_, result_, cx_->names().columnNumber, value)) { |
| 1073 | return false; |
| 1074 | } |
| 1075 | |
| 1076 | value.setBoolean(true); |
| 1077 | if (!DefineDataProperty(cx_, result_, cx_->names().isBreakpoint, value)) { |
| 1078 | return false; |
| 1079 | } |
| 1080 | |
| 1081 | value.setBoolean(true); |
| 1082 | if (!DefineDataProperty(cx_, result_, cx_->names().isStepStart, value)) { |
| 1083 | return false; |
| 1084 | } |
| 1085 | |
| 1086 | return true; |
| 1087 | } |
| 1088 | }; |
| 1089 | |
| 1090 | bool DebuggerScript::CallData::getOffsetMetadata() { |
| 1091 | if (!args.requireAtLeast(cx, "Debugger.Script.getOffsetMetadata", 1)) { |
| 1092 | return false; |
| 1093 | } |
| 1094 | size_t offset; |
| 1095 | if (!ScriptOffset(cx, args[0], &offset)) { |
| 1096 | return false; |
| 1097 | } |
| 1098 | |
| 1099 | Rooted<PlainObject*> result(cx); |
| 1100 | GetOffsetMetadataMatcher matcher(cx, offset, &result); |
| 1101 | if (!referent.match(matcher)) { |
| 1102 | return false; |
| 1103 | } |
| 1104 | |
| 1105 | args.rval().setObject(*result); |
| 1106 | return true; |
| 1107 | } |
| 1108 | |
| 1109 | namespace { |
| 1110 | |
| 1111 | /* |
| 1112 | * FlowGraphSummary::populate(cx, script) computes a summary of script's |
| 1113 | * control flow graph used by DebuggerScript_{getAllOffsets,getLineOffsets}. |
| 1114 | * |
| 1115 | * An instruction on a given line is an entry point for that line if it can be |
| 1116 | * reached from (an instruction on) a different line. We distinguish between the |
| 1117 | * following cases: |
| 1118 | * - hasNoEdges: |
| 1119 | * The instruction cannot be reached, so the instruction is not an entry |
| 1120 | * point for the line it is on. |
| 1121 | * - hasSingleEdge: |
| 1122 | * The instruction can be reached from a single line. If this line is |
| 1123 | * different from the line the instruction is on, the instruction is an |
| 1124 | * entry point for that line. |
| 1125 | * |
| 1126 | * Similarly, an instruction on a given position (line/column pair) is an |
| 1127 | * entry point for that position if it can be reached from (an instruction on) a |
| 1128 | * different position. Again, we distinguish between the following cases: |
| 1129 | * - hasNoEdges: |
| 1130 | * The instruction cannot be reached, so the instruction is not an entry |
| 1131 | * point for the position it is on. |
| 1132 | * - hasSingleEdge: |
| 1133 | * The instruction can be reached from a single position. If this line is |
| 1134 | * different from the position the instruction is on, the instruction is |
| 1135 | * an entry point for that position. |
| 1136 | */ |
| 1137 | class FlowGraphSummary { |
| 1138 | public: |
| 1139 | class Entry { |
| 1140 | public: |
| 1141 | static constexpr uint32_t Line_HasNoEdge = UINT32_MAX(4294967295U); |
| 1142 | static constexpr uint32_t Column_HasMultipleEdge = UINT32_MAX(4294967295U); |
| 1143 | |
| 1144 | // NOTE: column can be Column_HasMultipleEdge. |
| 1145 | static Entry createWithSingleEdgeOrMultipleEdge(uint32_t lineno, |
| 1146 | uint32_t column) { |
| 1147 | return Entry(lineno, column); |
| 1148 | } |
| 1149 | |
| 1150 | static Entry createWithMultipleEdgesFromSingleLine(uint32_t lineno) { |
| 1151 | return Entry(lineno, Column_HasMultipleEdge); |
| 1152 | } |
| 1153 | |
| 1154 | static Entry createWithMultipleEdgesFromMultipleLines() { |
| 1155 | return Entry(Line_HasNoEdge, Column_HasMultipleEdge); |
| 1156 | } |
| 1157 | |
| 1158 | Entry() : lineno_(Line_HasNoEdge), column_(1) {} |
| 1159 | |
| 1160 | bool hasNoEdges() const { |
| 1161 | return lineno_ == Line_HasNoEdge && column_ != Column_HasMultipleEdge; |
| 1162 | } |
| 1163 | |
| 1164 | bool hasSingleEdge() const { |
| 1165 | return lineno_ != Line_HasNoEdge && column_ != Column_HasMultipleEdge; |
| 1166 | } |
| 1167 | |
| 1168 | uint32_t lineno() const { return lineno_; } |
| 1169 | |
| 1170 | // Returns 1-origin column number or the sentinel value |
| 1171 | // Column_HasMultipleEdge. |
| 1172 | uint32_t columnOrSentinel() const { return column_; } |
| 1173 | |
| 1174 | JS::LimitedColumnNumberOneOrigin column() const { |
| 1175 | MOZ_ASSERT(column_ != Column_HasMultipleEdge)do { static_assert( mozilla::detail::AssertionConditionType< decltype(column_ != Column_HasMultipleEdge)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(column_ != Column_HasMultipleEdge ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "column_ != Column_HasMultipleEdge", "./../../../../js/src/debugger/Script.cpp" , 1175); AnnotateMozCrashReason("MOZ_ASSERT" "(" "column_ != Column_HasMultipleEdge" ")"); do { MOZ_CrashSequence(__null, 1175); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1176 | return JS::LimitedColumnNumberOneOrigin(column_); |
| 1177 | } |
| 1178 | |
| 1179 | private: |
| 1180 | Entry(uint32_t lineno, uint32_t column) |
| 1181 | : lineno_(lineno), column_(column) {} |
| 1182 | |
| 1183 | // Line number (1-origin). |
| 1184 | // Line_HasNoEdge for no edge. |
| 1185 | uint32_t lineno_; |
| 1186 | |
| 1187 | // Column number in UTF-16 code units (1-origin). |
| 1188 | // Column_HasMultipleEdge for multiple edge. |
| 1189 | uint32_t column_; |
| 1190 | }; |
| 1191 | |
| 1192 | explicit FlowGraphSummary(JSContext* cx) : entries_(cx) {} |
| 1193 | |
| 1194 | Entry& operator[](size_t index) { return entries_[index]; } |
| 1195 | |
| 1196 | bool populate(JSContext* cx, JSScript* script) { |
| 1197 | if (!entries_.growBy(script->length())) { |
| 1198 | return false; |
| 1199 | } |
| 1200 | unsigned mainOffset = script->pcToOffset(script->main()); |
| 1201 | entries_[mainOffset] = Entry::createWithMultipleEdgesFromMultipleLines(); |
| 1202 | |
| 1203 | // The following code uses uint32_t for column numbers. |
| 1204 | // The value is either 1-origin column number, |
| 1205 | // or Entry::Column_HasMultipleEdge. |
| 1206 | |
| 1207 | uint32_t prevLineno = script->lineno(); |
| 1208 | if (prevLineno == Entry::Line_HasNoEdge) { |
| 1209 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, |
| 1210 | JSMSG_BAD_LINE_NUMBER); |
| 1211 | return false; |
| 1212 | } |
| 1213 | uint32_t prevColumn = 1; |
| 1214 | JSOp prevOp = JSOp::Nop; |
| 1215 | for (BytecodeRangeWithPosition r(cx, script, SkipPrologueOps::Yes); |
| 1216 | !r.empty(); r.popFront()) { |
| 1217 | uint32_t lineno = prevLineno; |
| 1218 | uint32_t column = prevColumn; |
| 1219 | JSOp op = r.frontOpcode(); |
| 1220 | |
| 1221 | if (BytecodeFallsThrough(prevOp)) { |
| 1222 | addEdge(prevLineno, prevColumn, r.frontOffset()); |
| 1223 | } |
| 1224 | |
| 1225 | // If we visit the branch target before we visit the |
| 1226 | // branch op itself, just reuse the previous location. |
| 1227 | // This is reasonable for the time being because this |
| 1228 | // situation can currently only arise from loop heads, |
| 1229 | // where this assumption holds. |
| 1230 | if (BytecodeIsJumpTarget(op) && !entries_[r.frontOffset()].hasNoEdges()) { |
| 1231 | lineno = entries_[r.frontOffset()].lineno(); |
| 1232 | column = entries_[r.frontOffset()].columnOrSentinel(); |
| 1233 | } |
| 1234 | |
| 1235 | if (r.frontIsEntryPoint()) { |
| 1236 | lineno = r.frontLineNumber(); |
| 1237 | column = r.frontColumnNumber().oneOriginValue(); |
| 1238 | if (lineno == Entry::Line_HasNoEdge) { |
| 1239 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, |
| 1240 | JSMSG_BAD_LINE_NUMBER); |
| 1241 | return false; |
| 1242 | } |
| 1243 | // NOTE: The column data types cannot represent Column_HasMultipleEdge, |
| 1244 | // and also the column number is limited in the frontend. |
| 1245 | // See GeneralTokenStreamChars::computeColumn. |
| 1246 | MOZ_ASSERT(column != Entry::Column_HasMultipleEdge)do { static_assert( mozilla::detail::AssertionConditionType< decltype(column != Entry::Column_HasMultipleEdge)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(column != Entry::Column_HasMultipleEdge))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("column != Entry::Column_HasMultipleEdge" , "./../../../../js/src/debugger/Script.cpp", 1246); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "column != Entry::Column_HasMultipleEdge" ")" ); do { MOZ_CrashSequence(__null, 1246); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1247 | } |
| 1248 | |
| 1249 | if (IsJumpOpcode(op)) { |
| 1250 | addEdge(lineno, column, r.frontOffset() + GET_JUMP_OFFSET(r.frontPC())); |
| 1251 | } else if (op == JSOp::TableSwitch) { |
| 1252 | jsbytecode* const switchPC = r.frontPC(); |
| 1253 | jsbytecode* pc = switchPC; |
| 1254 | size_t offset = r.frontOffset(); |
| 1255 | ptrdiff_t step = JUMP_OFFSET_LEN; |
| 1256 | size_t defaultOffset = offset + GET_JUMP_OFFSET(pc); |
| 1257 | pc += step; |
| 1258 | addEdge(lineno, column, defaultOffset); |
| 1259 | |
| 1260 | int32_t low = GET_JUMP_OFFSET(pc); |
| 1261 | pc += JUMP_OFFSET_LEN; |
| 1262 | int ncases = GET_JUMP_OFFSET(pc) - low + 1; |
| 1263 | pc += JUMP_OFFSET_LEN; |
Value stored to 'pc' is never read | |
| 1264 | |
| 1265 | for (int i = 0; i < ncases; i++) { |
| 1266 | size_t target = script->tableSwitchCaseOffset(switchPC, i); |
| 1267 | addEdge(lineno, column, target); |
| 1268 | } |
| 1269 | } else if (op == JSOp::Try) { |
| 1270 | // As there is no literal incoming edge into the catch block, we |
| 1271 | // make a fake one by copying the JSOp::Try location, as-if this |
| 1272 | // was an incoming edge of the catch block. This is needed |
| 1273 | // because we only report offsets of entry points which have |
| 1274 | // valid incoming edges. |
| 1275 | for (const TryNote& tn : script->trynotes()) { |
| 1276 | if (tn.start == r.frontOffset() + JSOpLength_Try) { |
| 1277 | uint32_t catchOffset = tn.start + tn.length; |
| 1278 | if (tn.kind() == TryNoteKind::Catch || |
| 1279 | tn.kind() == TryNoteKind::Finally) { |
| 1280 | addEdge(lineno, column, catchOffset); |
| 1281 | } |
| 1282 | } |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | prevLineno = lineno; |
| 1287 | prevColumn = column; |
| 1288 | prevOp = op; |
| 1289 | } |
| 1290 | |
| 1291 | return true; |
| 1292 | } |
| 1293 | |
| 1294 | private: |
| 1295 | // sourceColumn is either 1-origin column number, |
| 1296 | // or Entry::Column_HasMultipleEdge. |
| 1297 | void addEdge(uint32_t sourceLineno, uint32_t sourceColumn, |
| 1298 | size_t targetOffset) { |
| 1299 | if (entries_[targetOffset].hasNoEdges()) { |
| 1300 | entries_[targetOffset] = |
| 1301 | Entry::createWithSingleEdgeOrMultipleEdge(sourceLineno, sourceColumn); |
| 1302 | } else if (entries_[targetOffset].lineno() != sourceLineno) { |
| 1303 | entries_[targetOffset] = |
| 1304 | Entry::createWithMultipleEdgesFromMultipleLines(); |
| 1305 | } else if (entries_[targetOffset].columnOrSentinel() != sourceColumn) { |
| 1306 | entries_[targetOffset] = |
| 1307 | Entry::createWithMultipleEdgesFromSingleLine(sourceLineno); |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | Vector<Entry> entries_; |
| 1312 | }; |
| 1313 | |
| 1314 | } /* anonymous namespace */ |
| 1315 | |
| 1316 | class DebuggerScript::GetOffsetLocationMatcher { |
| 1317 | JSContext* cx_; |
| 1318 | size_t offset_; |
| 1319 | MutableHandle<PlainObject*> result_; |
| 1320 | |
| 1321 | public: |
| 1322 | explicit GetOffsetLocationMatcher(JSContext* cx, size_t offset, |
| 1323 | MutableHandle<PlainObject*> result) |
| 1324 | : cx_(cx), offset_(offset), result_(result) {} |
| 1325 | using ReturnType = bool; |
| 1326 | ReturnType match(Handle<BaseScript*> base) { |
| 1327 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 1328 | if (!script) { |
| 1329 | return false; |
| 1330 | } |
| 1331 | |
| 1332 | if (!EnsureScriptOffsetIsValid(cx_, script, offset_)) { |
| 1333 | return false; |
| 1334 | } |
| 1335 | |
| 1336 | FlowGraphSummary flowData(cx_); |
| 1337 | if (!flowData.populate(cx_, script)) { |
| 1338 | return false; |
| 1339 | } |
| 1340 | |
| 1341 | result_.set(NewPlainObject(cx_)); |
| 1342 | if (!result_) { |
| 1343 | return false; |
| 1344 | } |
| 1345 | |
| 1346 | // Use SkipPrologueOps::No to ensure we return isEntryPoint = false for |
| 1347 | // prologue ops, instead of the value for the first 'main' op. |
| 1348 | BytecodeRangeWithPosition r(cx_, script, SkipPrologueOps::No); |
| 1349 | while (!r.empty() && r.frontOffset() < offset_) { |
| 1350 | r.popFront(); |
| 1351 | } |
| 1352 | MOZ_ASSERT(r.frontOffset() == offset_)do { static_assert( mozilla::detail::AssertionConditionType< decltype(r.frontOffset() == offset_)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(r.frontOffset() == offset_)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("r.frontOffset() == offset_" , "./../../../../js/src/debugger/Script.cpp", 1352); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "r.frontOffset() == offset_" ")"); do { MOZ_CrashSequence (__null, 1352); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1353 | |
| 1354 | bool isEntryPoint = r.frontIsEntryPoint(); |
| 1355 | |
| 1356 | // Line numbers are only correctly defined on entry points. Thus looks |
| 1357 | // either for the next valid offset in the flowData, being the last entry |
| 1358 | // point flowing into the current offset, or for the next valid entry point. |
| 1359 | while (!r.frontIsEntryPoint() && |
| 1360 | !flowData[r.frontOffset()].hasSingleEdge()) { |
| 1361 | r.popFront(); |
| 1362 | MOZ_ASSERT(!r.empty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!r.empty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!r.empty()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!r.empty()", "./../../../../js/src/debugger/Script.cpp" , 1362); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!r.empty()" ")"); do { MOZ_CrashSequence(__null, 1362); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1363 | } |
| 1364 | |
| 1365 | // If this is an entry point, take the line number associated with the entry |
| 1366 | // point, otherwise settle on the next instruction and take the incoming |
| 1367 | // edge position. |
| 1368 | uint32_t lineno; |
| 1369 | JS::LimitedColumnNumberOneOrigin column; |
| 1370 | if (r.frontIsEntryPoint()) { |
| 1371 | lineno = r.frontLineNumber(); |
| 1372 | column = r.frontColumnNumber(); |
| 1373 | } else { |
| 1374 | MOZ_ASSERT(flowData[r.frontOffset()].hasSingleEdge())do { static_assert( mozilla::detail::AssertionConditionType< decltype(flowData[r.frontOffset()].hasSingleEdge())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(flowData[r.frontOffset()].hasSingleEdge()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("flowData[r.frontOffset()].hasSingleEdge()" , "./../../../../js/src/debugger/Script.cpp", 1374); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "flowData[r.frontOffset()].hasSingleEdge()" ")"); do { MOZ_CrashSequence(__null, 1374); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1375 | lineno = flowData[r.frontOffset()].lineno(); |
| 1376 | column = flowData[r.frontOffset()].column(); |
| 1377 | } |
| 1378 | |
| 1379 | RootedValue value(cx_, NumberValue(lineno)); |
| 1380 | if (!DefineDataProperty(cx_, result_, cx_->names().lineNumber, value)) { |
| 1381 | return false; |
| 1382 | } |
| 1383 | |
| 1384 | value = NumberValue(column.oneOriginValue()); |
| 1385 | if (!DefineDataProperty(cx_, result_, cx_->names().columnNumber, value)) { |
| 1386 | return false; |
| 1387 | } |
| 1388 | |
| 1389 | // The same entry point test that is used by getAllColumnOffsets. |
| 1390 | isEntryPoint = (isEntryPoint && !flowData[offset_].hasNoEdges() && |
| 1391 | (flowData[offset_].lineno() != r.frontLineNumber() || |
| 1392 | flowData[offset_].columnOrSentinel() != |
| 1393 | r.frontColumnNumber().oneOriginValue())); |
| 1394 | value.setBoolean(isEntryPoint); |
| 1395 | if (!DefineDataProperty(cx_, result_, cx_->names().isEntryPoint, value)) { |
| 1396 | return false; |
| 1397 | } |
| 1398 | |
| 1399 | return true; |
| 1400 | } |
| 1401 | ReturnType match(Handle<WasmInstanceObject*> instanceObj) { |
| 1402 | wasm::Instance& instance = instanceObj->instance(); |
| 1403 | if (!instance.debugEnabled()) { |
| 1404 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 1405 | JSMSG_DEBUG_BAD_OFFSET); |
| 1406 | return false; |
| 1407 | } |
| 1408 | |
| 1409 | uint32_t lineno; |
| 1410 | JS::LimitedColumnNumberOneOrigin column; |
| 1411 | if (!instance.debug().getOffsetLocation(offset_, &lineno, &column)) { |
| 1412 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 1413 | JSMSG_DEBUG_BAD_OFFSET); |
| 1414 | return false; |
| 1415 | } |
| 1416 | |
| 1417 | result_.set(NewPlainObject(cx_)); |
| 1418 | if (!result_) { |
| 1419 | return false; |
| 1420 | } |
| 1421 | |
| 1422 | RootedValue value(cx_, NumberValue(lineno)); |
| 1423 | if (!DefineDataProperty(cx_, result_, cx_->names().lineNumber, value)) { |
| 1424 | return false; |
| 1425 | } |
| 1426 | |
| 1427 | value = NumberValue(column.oneOriginValue()); |
| 1428 | if (!DefineDataProperty(cx_, result_, cx_->names().columnNumber, value)) { |
| 1429 | return false; |
| 1430 | } |
| 1431 | |
| 1432 | value.setBoolean(true); |
| 1433 | if (!DefineDataProperty(cx_, result_, cx_->names().isEntryPoint, value)) { |
| 1434 | return false; |
| 1435 | } |
| 1436 | |
| 1437 | return true; |
| 1438 | } |
| 1439 | }; |
| 1440 | |
| 1441 | bool DebuggerScript::CallData::getOffsetLocation() { |
| 1442 | if (!args.requireAtLeast(cx, "Debugger.Script.getOffsetLocation", 1)) { |
| 1443 | return false; |
| 1444 | } |
| 1445 | size_t offset; |
| 1446 | if (!ScriptOffset(cx, args[0], &offset)) { |
| 1447 | return false; |
| 1448 | } |
| 1449 | |
| 1450 | Rooted<PlainObject*> result(cx); |
| 1451 | GetOffsetLocationMatcher matcher(cx, offset, &result); |
| 1452 | if (!referent.match(matcher)) { |
| 1453 | return false; |
| 1454 | } |
| 1455 | |
| 1456 | args.rval().setObject(*result); |
| 1457 | return true; |
| 1458 | } |
| 1459 | |
| 1460 | // Return whether an opcode is considered effectful: it can have direct side |
| 1461 | // effects that can be observed outside of the current frame. Opcodes are not |
| 1462 | // effectful if they only modify the current frame's state, modify objects |
| 1463 | // created by the current frame, or can potentially call other scripts or |
| 1464 | // natives which could have side effects. |
| 1465 | static bool BytecodeIsEffectful(JSScript* script, size_t offset) { |
| 1466 | jsbytecode* pc = script->offsetToPC(offset); |
| 1467 | JSOp op = JSOp(*pc); |
| 1468 | switch (op) { |
| 1469 | case JSOp::SetProp: |
| 1470 | case JSOp::StrictSetProp: |
| 1471 | case JSOp::SetPropSuper: |
| 1472 | case JSOp::StrictSetPropSuper: |
| 1473 | case JSOp::SetElem: |
| 1474 | case JSOp::StrictSetElem: |
| 1475 | case JSOp::SetElemSuper: |
| 1476 | case JSOp::StrictSetElemSuper: |
| 1477 | case JSOp::SetName: |
| 1478 | case JSOp::StrictSetName: |
| 1479 | case JSOp::SetGName: |
| 1480 | case JSOp::StrictSetGName: |
| 1481 | case JSOp::DelProp: |
| 1482 | case JSOp::StrictDelProp: |
| 1483 | case JSOp::DelElem: |
| 1484 | case JSOp::StrictDelElem: |
| 1485 | case JSOp::DelName: |
| 1486 | case JSOp::SetAliasedVar: |
| 1487 | case JSOp::InitHomeObject: |
| 1488 | case JSOp::SetIntrinsic: |
| 1489 | case JSOp::InitGLexical: |
| 1490 | case JSOp::GlobalOrEvalDeclInstantiation: |
| 1491 | case JSOp::SetFunName: |
| 1492 | case JSOp::MutateProto: |
| 1493 | case JSOp::DynamicImport: |
| 1494 | case JSOp::InitialYield: |
| 1495 | case JSOp::Yield: |
| 1496 | case JSOp::Await: |
| 1497 | case JSOp::CanSkipAwait: |
| 1498 | case JSOp::AddDisposable: |
| 1499 | return true; |
| 1500 | |
| 1501 | case JSOp::Nop: |
| 1502 | case JSOp::NopDestructuring: |
| 1503 | case JSOp::NopIsAssignOp: |
| 1504 | case JSOp::TryDestructuring: |
| 1505 | case JSOp::Lineno: |
| 1506 | case JSOp::JumpTarget: |
| 1507 | case JSOp::Undefined: |
| 1508 | case JSOp::JumpIfTrue: |
| 1509 | case JSOp::JumpIfFalse: |
| 1510 | case JSOp::Return: |
| 1511 | case JSOp::RetRval: |
| 1512 | case JSOp::And: |
| 1513 | case JSOp::Or: |
| 1514 | case JSOp::Coalesce: |
| 1515 | case JSOp::Try: |
| 1516 | case JSOp::Throw: |
| 1517 | case JSOp::ThrowWithStack: |
| 1518 | case JSOp::TakeDisposeCapability: |
| 1519 | case JSOp::CreateSuppressedError: |
| 1520 | case JSOp::Goto: |
| 1521 | case JSOp::TableSwitch: |
| 1522 | case JSOp::Case: |
| 1523 | case JSOp::Default: |
| 1524 | case JSOp::BitNot: |
| 1525 | case JSOp::BitAnd: |
| 1526 | case JSOp::BitOr: |
| 1527 | case JSOp::BitXor: |
| 1528 | case JSOp::Lsh: |
| 1529 | case JSOp::Rsh: |
| 1530 | case JSOp::Ursh: |
| 1531 | case JSOp::Add: |
| 1532 | case JSOp::Sub: |
| 1533 | case JSOp::Mul: |
| 1534 | case JSOp::Div: |
| 1535 | case JSOp::Mod: |
| 1536 | case JSOp::Pow: |
| 1537 | case JSOp::Pos: |
| 1538 | case JSOp::ToNumeric: |
| 1539 | case JSOp::Neg: |
| 1540 | case JSOp::Inc: |
| 1541 | case JSOp::Dec: |
| 1542 | case JSOp::ToString: |
| 1543 | case JSOp::Eq: |
| 1544 | case JSOp::Ne: |
| 1545 | case JSOp::StrictEq: |
| 1546 | case JSOp::StrictNe: |
| 1547 | case JSOp::StrictConstantEq: |
| 1548 | case JSOp::StrictConstantNe: |
| 1549 | case JSOp::Lt: |
| 1550 | case JSOp::Le: |
| 1551 | case JSOp::Gt: |
| 1552 | case JSOp::Ge: |
| 1553 | case JSOp::Double: |
| 1554 | case JSOp::BigInt: |
| 1555 | case JSOp::String: |
| 1556 | case JSOp::Symbol: |
| 1557 | case JSOp::Zero: |
| 1558 | case JSOp::One: |
| 1559 | case JSOp::Null: |
| 1560 | case JSOp::Void: |
| 1561 | case JSOp::Hole: |
| 1562 | case JSOp::False: |
| 1563 | case JSOp::True: |
| 1564 | case JSOp::Arguments: |
| 1565 | case JSOp::Rest: |
| 1566 | case JSOp::GetArg: |
| 1567 | case JSOp::GetFrameArg: |
| 1568 | case JSOp::SetArg: |
| 1569 | case JSOp::GetLocal: |
| 1570 | case JSOp::SetLocal: |
| 1571 | case JSOp::GetActualArg: |
| 1572 | case JSOp::ArgumentsLength: |
| 1573 | case JSOp::ThrowSetConst: |
| 1574 | case JSOp::CheckLexical: |
| 1575 | case JSOp::CheckAliasedLexical: |
| 1576 | case JSOp::InitLexical: |
| 1577 | case JSOp::Uninitialized: |
| 1578 | case JSOp::Pop: |
| 1579 | case JSOp::PopN: |
| 1580 | case JSOp::DupAt: |
| 1581 | case JSOp::NewArray: |
| 1582 | case JSOp::NewInit: |
| 1583 | case JSOp::NewObject: |
| 1584 | case JSOp::InitElem: |
| 1585 | case JSOp::InitHiddenElem: |
| 1586 | case JSOp::InitLockedElem: |
| 1587 | case JSOp::InitElemInc: |
| 1588 | case JSOp::InitElemArray: |
| 1589 | case JSOp::InitProp: |
| 1590 | case JSOp::InitLockedProp: |
| 1591 | case JSOp::InitHiddenProp: |
| 1592 | case JSOp::InitPropGetter: |
| 1593 | case JSOp::InitHiddenPropGetter: |
| 1594 | case JSOp::InitPropSetter: |
| 1595 | case JSOp::InitHiddenPropSetter: |
| 1596 | case JSOp::InitElemGetter: |
| 1597 | case JSOp::InitHiddenElemGetter: |
| 1598 | case JSOp::InitElemSetter: |
| 1599 | case JSOp::InitHiddenElemSetter: |
| 1600 | case JSOp::SpreadCall: |
| 1601 | case JSOp::Call: |
| 1602 | case JSOp::CallContent: |
| 1603 | case JSOp::CallIgnoresRv: |
| 1604 | case JSOp::CallIter: |
| 1605 | case JSOp::CallContentIter: |
| 1606 | case JSOp::New: |
| 1607 | case JSOp::NewContent: |
| 1608 | case JSOp::Eval: |
| 1609 | case JSOp::StrictEval: |
| 1610 | case JSOp::Int8: |
| 1611 | case JSOp::Uint16: |
| 1612 | case JSOp::ResumeKind: |
| 1613 | case JSOp::GetGName: |
| 1614 | case JSOp::GetName: |
| 1615 | case JSOp::GetIntrinsic: |
| 1616 | case JSOp::GetImport: |
| 1617 | case JSOp::BindName: |
| 1618 | case JSOp::BindUnqualifiedName: |
| 1619 | case JSOp::BindUnqualifiedGName: |
| 1620 | case JSOp::BindVar: |
| 1621 | case JSOp::Dup: |
| 1622 | case JSOp::Dup2: |
| 1623 | case JSOp::Swap: |
| 1624 | case JSOp::Pick: |
| 1625 | case JSOp::Unpick: |
| 1626 | case JSOp::GetAliasedDebugVar: |
| 1627 | case JSOp::GetAliasedVar: |
| 1628 | case JSOp::Uint24: |
| 1629 | case JSOp::Int32: |
| 1630 | case JSOp::LoopHead: |
| 1631 | case JSOp::GetElem: |
| 1632 | case JSOp::Not: |
| 1633 | case JSOp::FunctionThis: |
| 1634 | case JSOp::GlobalThis: |
| 1635 | case JSOp::NonSyntacticGlobalThis: |
| 1636 | case JSOp::Callee: |
| 1637 | case JSOp::EnvCallee: |
| 1638 | case JSOp::SuperBase: |
| 1639 | case JSOp::GetPropSuper: |
| 1640 | case JSOp::GetElemSuper: |
| 1641 | case JSOp::GetProp: |
| 1642 | case JSOp::RegExp: |
| 1643 | case JSOp::CallSiteObj: |
| 1644 | case JSOp::Object: |
| 1645 | case JSOp::Typeof: |
| 1646 | case JSOp::TypeofExpr: |
| 1647 | case JSOp::TypeofEq: |
| 1648 | case JSOp::ToAsyncIter: |
| 1649 | case JSOp::ToPropertyKey: |
| 1650 | case JSOp::Lambda: |
| 1651 | case JSOp::PushLexicalEnv: |
| 1652 | case JSOp::PopLexicalEnv: |
| 1653 | case JSOp::FreshenLexicalEnv: |
| 1654 | case JSOp::RecreateLexicalEnv: |
| 1655 | case JSOp::PushClassBodyEnv: |
| 1656 | case JSOp::Iter: |
| 1657 | case JSOp::MoreIter: |
| 1658 | case JSOp::IsNoIter: |
| 1659 | case JSOp::EndIter: |
| 1660 | case JSOp::CloseIter: |
| 1661 | case JSOp::OptimizeGetIterator: |
| 1662 | case JSOp::IsNullOrUndefined: |
| 1663 | case JSOp::In: |
| 1664 | case JSOp::HasOwn: |
| 1665 | case JSOp::CheckPrivateField: |
| 1666 | case JSOp::NewPrivateName: |
| 1667 | case JSOp::SetRval: |
| 1668 | case JSOp::Instanceof: |
| 1669 | case JSOp::DebugLeaveLexicalEnv: |
| 1670 | case JSOp::Debugger: |
| 1671 | case JSOp::ImplicitThis: |
| 1672 | case JSOp::NewTarget: |
| 1673 | case JSOp::CheckIsObj: |
| 1674 | case JSOp::CheckObjCoercible: |
| 1675 | case JSOp::DebugCheckSelfHosted: |
| 1676 | case JSOp::IsConstructing: |
| 1677 | case JSOp::OptimizeSpreadCall: |
| 1678 | case JSOp::ImportMeta: |
| 1679 | case JSOp::EnterWith: |
| 1680 | case JSOp::LeaveWith: |
| 1681 | case JSOp::SpreadNew: |
| 1682 | case JSOp::SpreadEval: |
| 1683 | case JSOp::StrictSpreadEval: |
| 1684 | case JSOp::CheckClassHeritage: |
| 1685 | case JSOp::FunWithProto: |
| 1686 | case JSOp::ObjWithProto: |
| 1687 | case JSOp::BuiltinObject: |
| 1688 | case JSOp::CheckThis: |
| 1689 | case JSOp::CheckReturn: |
| 1690 | case JSOp::CheckThisReinit: |
| 1691 | case JSOp::SuperFun: |
| 1692 | case JSOp::SpreadSuperCall: |
| 1693 | case JSOp::SuperCall: |
| 1694 | case JSOp::PushVarEnv: |
| 1695 | case JSOp::GetBoundName: |
| 1696 | case JSOp::Exception: |
| 1697 | case JSOp::ExceptionAndStack: |
| 1698 | case JSOp::FinalYieldRval: |
| 1699 | case JSOp::Resume: |
| 1700 | case JSOp::AfterYield: |
| 1701 | case JSOp::MaybeExtractAwaitValue: |
| 1702 | case JSOp::Generator: |
| 1703 | case JSOp::AsyncAwait: |
| 1704 | case JSOp::AsyncResolve: |
| 1705 | case JSOp::AsyncReject: |
| 1706 | case JSOp::Finally: |
| 1707 | case JSOp::GetRval: |
| 1708 | case JSOp::ThrowMsg: |
| 1709 | return false; |
| 1710 | |
| 1711 | case JSOp::InitAliasedLexical: { |
| 1712 | uint32_t hops = EnvironmentCoordinate(pc).hops(); |
| 1713 | if (hops == 0) { |
| 1714 | // Initializing aliased lexical in the current scope is almost same |
| 1715 | // as JSOp::InitLexical. |
| 1716 | return false; |
| 1717 | } |
| 1718 | |
| 1719 | // Otherwise this can touch an environment outside of the current scope. |
| 1720 | return true; |
| 1721 | } |
| 1722 | } |
| 1723 | |
| 1724 | MOZ_ASSERT_UNREACHABLE("Invalid opcode")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 opcode" ")", "./../../../../js/src/debugger/Script.cpp" , 1724); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Invalid opcode" ")"); do { MOZ_CrashSequence (__null, 1724); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1725 | return false; |
| 1726 | } |
| 1727 | |
| 1728 | bool DebuggerScript::CallData::getEffectfulOffsets() { |
| 1729 | if (!ensureScript()) { |
| 1730 | return false; |
| 1731 | } |
| 1732 | |
| 1733 | RootedObject result(cx, NewDenseEmptyArray(cx)); |
| 1734 | if (!result) { |
| 1735 | return false; |
| 1736 | } |
| 1737 | for (BytecodeRange r(cx, script); !r.empty(); r.popFront()) { |
| 1738 | size_t offset = r.frontOffset(); |
| 1739 | if (!BytecodeIsEffectful(script, offset)) { |
| 1740 | continue; |
| 1741 | } |
| 1742 | |
| 1743 | if (IsGeneratorSlotInitialization(script, offset, cx)) { |
| 1744 | // This is engine-internal operation and not visible outside the |
| 1745 | // currently executing frame. |
| 1746 | // |
| 1747 | // Also this offset is not allowed for setting breakpoint. |
| 1748 | continue; |
| 1749 | } |
| 1750 | |
| 1751 | if (!NewbornArrayPush(cx, result, NumberValue(offset))) { |
| 1752 | return false; |
| 1753 | } |
| 1754 | } |
| 1755 | |
| 1756 | args.rval().setObject(*result); |
| 1757 | return true; |
| 1758 | } |
| 1759 | |
| 1760 | bool DebuggerScript::CallData::getAllOffsets() { |
| 1761 | if (!ensureScript()) { |
| 1762 | return false; |
| 1763 | } |
| 1764 | |
| 1765 | // First pass: determine which offsets in this script are jump targets and |
| 1766 | // which line numbers jump to them. |
| 1767 | FlowGraphSummary flowData(cx); |
| 1768 | if (!flowData.populate(cx, script)) { |
| 1769 | return false; |
| 1770 | } |
| 1771 | |
| 1772 | // Second pass: build the result array. |
| 1773 | RootedObject result(cx, NewDenseEmptyArray(cx)); |
| 1774 | if (!result) { |
| 1775 | return false; |
| 1776 | } |
| 1777 | for (BytecodeRangeWithPosition r(cx, script, SkipPrologueOps::Yes); |
| 1778 | !r.empty(); r.popFront()) { |
| 1779 | if (!r.frontIsEntryPoint()) { |
| 1780 | continue; |
| 1781 | } |
| 1782 | |
| 1783 | size_t offset = r.frontOffset(); |
| 1784 | uint32_t lineno = r.frontLineNumber(); |
| 1785 | |
| 1786 | // Make a note, if the current instruction is an entry point for the current |
| 1787 | // line. |
| 1788 | if (!flowData[offset].hasNoEdges() && flowData[offset].lineno() != lineno) { |
| 1789 | // Get the offsets array for this line. |
| 1790 | RootedObject offsets(cx); |
| 1791 | RootedValue offsetsv(cx); |
| 1792 | |
| 1793 | RootedId id(cx, PropertyKey::Int(lineno)); |
| 1794 | |
| 1795 | bool found; |
| 1796 | if (!HasOwnProperty(cx, result, id, &found)) { |
| 1797 | return false; |
| 1798 | } |
| 1799 | if (found && !GetProperty(cx, result, result, id, &offsetsv)) { |
| 1800 | return false; |
| 1801 | } |
| 1802 | |
| 1803 | if (offsetsv.isObject()) { |
| 1804 | offsets = &offsetsv.toObject(); |
| 1805 | } else { |
| 1806 | MOZ_ASSERT(offsetsv.isUndefined())do { static_assert( mozilla::detail::AssertionConditionType< decltype(offsetsv.isUndefined())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(offsetsv.isUndefined()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("offsetsv.isUndefined()" , "./../../../../js/src/debugger/Script.cpp", 1806); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "offsetsv.isUndefined()" ")"); do { MOZ_CrashSequence (__null, 1806); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 1807 | |
| 1808 | // Create an empty offsets array for this line. |
| 1809 | // Store it in the result array. |
| 1810 | RootedId id(cx); |
| 1811 | RootedValue v(cx, NumberValue(lineno)); |
| 1812 | offsets = NewDenseEmptyArray(cx); |
| 1813 | if (!offsets || !PrimitiveValueToId<CanGC>(cx, v, &id)) { |
| 1814 | return false; |
| 1815 | } |
| 1816 | |
| 1817 | RootedValue value(cx, ObjectValue(*offsets)); |
| 1818 | if (!DefineDataProperty(cx, result, id, value)) { |
| 1819 | return false; |
| 1820 | } |
| 1821 | } |
| 1822 | |
| 1823 | // Append the current offset to the offsets array. |
| 1824 | if (!NewbornArrayPush(cx, offsets, NumberValue(offset))) { |
| 1825 | return false; |
| 1826 | } |
| 1827 | } |
| 1828 | } |
| 1829 | |
| 1830 | args.rval().setObject(*result); |
| 1831 | return true; |
| 1832 | } |
| 1833 | |
| 1834 | class DebuggerScript::GetAllColumnOffsetsMatcher { |
| 1835 | JSContext* cx_; |
| 1836 | MutableHandleObject result_; |
| 1837 | |
| 1838 | bool appendColumnOffsetEntry(uint32_t lineno, |
| 1839 | JS::LimitedColumnNumberOneOrigin column, |
| 1840 | size_t offset) { |
| 1841 | Rooted<PlainObject*> entry(cx_, NewPlainObject(cx_)); |
| 1842 | if (!entry) { |
| 1843 | return false; |
| 1844 | } |
| 1845 | |
| 1846 | RootedValue value(cx_, NumberValue(lineno)); |
| 1847 | if (!DefineDataProperty(cx_, entry, cx_->names().lineNumber, value)) { |
| 1848 | return false; |
| 1849 | } |
| 1850 | |
| 1851 | value = NumberValue(column.oneOriginValue()); |
| 1852 | if (!DefineDataProperty(cx_, entry, cx_->names().columnNumber, value)) { |
| 1853 | return false; |
| 1854 | } |
| 1855 | |
| 1856 | value = NumberValue(offset); |
| 1857 | if (!DefineDataProperty(cx_, entry, cx_->names().offset, value)) { |
| 1858 | return false; |
| 1859 | } |
| 1860 | |
| 1861 | return NewbornArrayPush(cx_, result_, ObjectValue(*entry)); |
| 1862 | } |
| 1863 | |
| 1864 | public: |
| 1865 | explicit GetAllColumnOffsetsMatcher(JSContext* cx, MutableHandleObject result) |
| 1866 | : cx_(cx), result_(result) {} |
| 1867 | using ReturnType = bool; |
| 1868 | ReturnType match(Handle<BaseScript*> base) { |
| 1869 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 1870 | if (!script) { |
| 1871 | return false; |
| 1872 | } |
| 1873 | |
| 1874 | // First pass: determine which offsets in this script are jump targets |
| 1875 | // and which positions jump to them. |
| 1876 | FlowGraphSummary flowData(cx_); |
| 1877 | if (!flowData.populate(cx_, script)) { |
| 1878 | return false; |
| 1879 | } |
| 1880 | |
| 1881 | // Second pass: build the result array. |
| 1882 | result_.set(NewDenseEmptyArray(cx_)); |
| 1883 | if (!result_) { |
| 1884 | return false; |
| 1885 | } |
| 1886 | |
| 1887 | for (BytecodeRangeWithPosition r(cx_, script, SkipPrologueOps::Yes); |
| 1888 | !r.empty(); r.popFront()) { |
| 1889 | uint32_t lineno = r.frontLineNumber(); |
| 1890 | JS::LimitedColumnNumberOneOrigin column = r.frontColumnNumber(); |
| 1891 | size_t offset = r.frontOffset(); |
| 1892 | |
| 1893 | // Make a note, if the current instruction is an entry point for |
| 1894 | // the current position. |
| 1895 | if (r.frontIsEntryPoint() && !flowData[offset].hasNoEdges() && |
| 1896 | (flowData[offset].lineno() != lineno || |
| 1897 | flowData[offset].columnOrSentinel() != column.oneOriginValue())) { |
| 1898 | if (!appendColumnOffsetEntry(lineno, column, offset)) { |
| 1899 | return false; |
| 1900 | } |
| 1901 | } |
| 1902 | } |
| 1903 | return true; |
| 1904 | } |
| 1905 | ReturnType match(Handle<WasmInstanceObject*> instanceObj) { |
| 1906 | wasm::Instance& instance = instanceObj->instance(); |
| 1907 | |
| 1908 | Vector<wasm::ExprLoc> offsets(cx_); |
| 1909 | if (instance.debugEnabled() && |
| 1910 | !instance.debug().getAllColumnOffsets(&offsets)) { |
| 1911 | return false; |
| 1912 | } |
| 1913 | |
| 1914 | result_.set(NewDenseEmptyArray(cx_)); |
| 1915 | if (!result_) { |
| 1916 | return false; |
| 1917 | } |
| 1918 | |
| 1919 | for (uint32_t i = 0; i < offsets.length(); i++) { |
| 1920 | uint32_t lineno = offsets[i].lineno; |
| 1921 | JS::LimitedColumnNumberOneOrigin column(offsets[i].column); |
| 1922 | size_t offset = offsets[i].offset; |
| 1923 | if (!appendColumnOffsetEntry(lineno, column, offset)) { |
| 1924 | return false; |
| 1925 | } |
| 1926 | } |
| 1927 | return true; |
| 1928 | } |
| 1929 | }; |
| 1930 | |
| 1931 | bool DebuggerScript::CallData::getAllColumnOffsets() { |
| 1932 | RootedObject result(cx); |
| 1933 | GetAllColumnOffsetsMatcher matcher(cx, &result); |
| 1934 | if (!referent.match(matcher)) { |
| 1935 | return false; |
| 1936 | } |
| 1937 | |
| 1938 | args.rval().setObject(*result); |
| 1939 | return true; |
| 1940 | } |
| 1941 | |
| 1942 | class DebuggerScript::GetLineOffsetsMatcher { |
| 1943 | JSContext* cx_; |
| 1944 | uint32_t lineno_; |
| 1945 | MutableHandleObject result_; |
| 1946 | |
| 1947 | public: |
| 1948 | explicit GetLineOffsetsMatcher(JSContext* cx, uint32_t lineno, |
| 1949 | MutableHandleObject result) |
| 1950 | : cx_(cx), lineno_(lineno), result_(result) {} |
| 1951 | using ReturnType = bool; |
| 1952 | ReturnType match(Handle<BaseScript*> base) { |
| 1953 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 1954 | if (!script) { |
| 1955 | return false; |
| 1956 | } |
| 1957 | |
| 1958 | // First pass: determine which offsets in this script are jump targets and |
| 1959 | // which line numbers jump to them. |
| 1960 | FlowGraphSummary flowData(cx_); |
| 1961 | if (!flowData.populate(cx_, script)) { |
| 1962 | return false; |
| 1963 | } |
| 1964 | |
| 1965 | result_.set(NewDenseEmptyArray(cx_)); |
| 1966 | if (!result_) { |
| 1967 | return false; |
| 1968 | } |
| 1969 | |
| 1970 | // Second pass: build the result array. |
| 1971 | for (BytecodeRangeWithPosition r(cx_, script, SkipPrologueOps::Yes); |
| 1972 | !r.empty(); r.popFront()) { |
| 1973 | if (!r.frontIsEntryPoint()) { |
| 1974 | continue; |
| 1975 | } |
| 1976 | |
| 1977 | size_t offset = r.frontOffset(); |
| 1978 | |
| 1979 | // If the op at offset is an entry point, append offset to result. |
| 1980 | if (r.frontLineNumber() == lineno_ && !flowData[offset].hasNoEdges() && |
| 1981 | flowData[offset].lineno() != lineno_) { |
| 1982 | if (!NewbornArrayPush(cx_, result_, NumberValue(offset))) { |
| 1983 | return false; |
| 1984 | } |
| 1985 | } |
| 1986 | } |
| 1987 | |
| 1988 | return true; |
| 1989 | } |
| 1990 | ReturnType match(Handle<WasmInstanceObject*> instanceObj) { |
| 1991 | wasm::Instance& instance = instanceObj->instance(); |
| 1992 | |
| 1993 | Vector<uint32_t> offsets(cx_); |
| 1994 | if (instance.debugEnabled() && |
| 1995 | !instance.debug().getLineOffsets(lineno_, &offsets)) { |
| 1996 | return false; |
| 1997 | } |
| 1998 | |
| 1999 | result_.set(NewDenseEmptyArray(cx_)); |
| 2000 | if (!result_) { |
| 2001 | return false; |
| 2002 | } |
| 2003 | |
| 2004 | for (uint32_t i = 0; i < offsets.length(); i++) { |
| 2005 | if (!NewbornArrayPush(cx_, result_, NumberValue(offsets[i]))) { |
| 2006 | return false; |
| 2007 | } |
| 2008 | } |
| 2009 | return true; |
| 2010 | } |
| 2011 | }; |
| 2012 | |
| 2013 | bool DebuggerScript::CallData::getLineOffsets() { |
| 2014 | if (!args.requireAtLeast(cx, "Debugger.Script.getLineOffsets", 1)) { |
| 2015 | return false; |
| 2016 | } |
| 2017 | |
| 2018 | // Parse lineno argument. |
| 2019 | RootedValue linenoValue(cx, args[0]); |
| 2020 | uint32_t lineno; |
| 2021 | if (!ToNumber(cx, &linenoValue)) { |
| 2022 | return false; |
| 2023 | } |
| 2024 | { |
| 2025 | double d = linenoValue.toNumber(); |
| 2026 | lineno = uint32_t(d); |
| 2027 | if (lineno != d) { |
| 2028 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, |
| 2029 | JSMSG_DEBUG_BAD_LINE); |
| 2030 | return false; |
| 2031 | } |
| 2032 | } |
| 2033 | |
| 2034 | RootedObject result(cx); |
| 2035 | GetLineOffsetsMatcher matcher(cx, lineno, &result); |
| 2036 | if (!referent.match(matcher)) { |
| 2037 | return false; |
| 2038 | } |
| 2039 | |
| 2040 | args.rval().setObject(*result); |
| 2041 | return true; |
| 2042 | } |
| 2043 | |
| 2044 | struct DebuggerScript::SetBreakpointMatcher { |
| 2045 | JSContext* cx_; |
| 2046 | Debugger* dbg_; |
| 2047 | size_t offset_; |
| 2048 | RootedObject handler_; |
| 2049 | RootedObject debuggerObject_; |
| 2050 | |
| 2051 | bool wrapCrossCompartmentEdges() { |
| 2052 | if (!cx_->compartment()->wrap(cx_, &handler_) || |
| 2053 | !cx_->compartment()->wrap(cx_, &debuggerObject_)) { |
| 2054 | return false; |
| 2055 | } |
| 2056 | |
| 2057 | // If the Debugger's compartment has killed incoming wrappers, we may not |
| 2058 | // have gotten usable results from the 'wrap' calls. Treat it as a |
| 2059 | // failure. |
| 2060 | if (IsDeadProxyObject(handler_) || IsDeadProxyObject(debuggerObject_)) { |
| 2061 | ReportAccessDenied(cx_); |
| 2062 | return false; |
| 2063 | } |
| 2064 | |
| 2065 | return true; |
| 2066 | } |
| 2067 | |
| 2068 | public: |
| 2069 | explicit SetBreakpointMatcher(JSContext* cx, Debugger* dbg, size_t offset, |
| 2070 | HandleObject handler) |
| 2071 | : cx_(cx), |
| 2072 | dbg_(dbg), |
| 2073 | offset_(offset), |
| 2074 | handler_(cx, handler), |
| 2075 | debuggerObject_(cx_, dbg_->toJSObject()) {} |
| 2076 | |
| 2077 | using ReturnType = bool; |
| 2078 | |
| 2079 | ReturnType match(Handle<BaseScript*> base) { |
| 2080 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 2081 | if (!script) { |
| 2082 | return false; |
| 2083 | } |
| 2084 | |
| 2085 | if (!dbg_->observesScript(script)) { |
| 2086 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 2087 | JSMSG_DEBUG_NOT_DEBUGGING); |
| 2088 | return false; |
| 2089 | } |
| 2090 | |
| 2091 | if (!EnsureScriptOffsetIsValid(cx_, script, offset_)) { |
| 2092 | return false; |
| 2093 | } |
| 2094 | |
| 2095 | if (!EnsureBreakpointIsAllowed(cx_, script, offset_)) { |
| 2096 | return false; |
| 2097 | } |
| 2098 | |
| 2099 | // Ensure observability *before* setting the breakpoint. If the script is |
| 2100 | // not already a debuggee, trying to ensure observability after setting |
| 2101 | // the breakpoint (and thus marking the script as a debuggee) will skip |
| 2102 | // actually ensuring observability. |
| 2103 | if (!dbg_->ensureExecutionObservabilityOfScript(cx_, script)) { |
| 2104 | return false; |
| 2105 | } |
| 2106 | |
| 2107 | // A Breakpoint belongs logically to its script's compartment, so its |
| 2108 | // references to its Debugger and handler must be properly wrapped. |
| 2109 | AutoRealm ar(cx_, script); |
| 2110 | if (!wrapCrossCompartmentEdges()) { |
| 2111 | return false; |
| 2112 | } |
| 2113 | |
| 2114 | jsbytecode* pc = script->offsetToPC(offset_); |
| 2115 | JSBreakpointSite* site = |
| 2116 | DebugScript::getOrCreateBreakpointSite(cx_, script, pc); |
| 2117 | if (!site) { |
| 2118 | return false; |
| 2119 | } |
| 2120 | |
| 2121 | if (!cx_->zone()->new_<Breakpoint>(dbg_, debuggerObject_, site, handler_)) { |
| 2122 | site->destroyIfEmpty(cx_->runtime()->gcContext()); |
| 2123 | ReportOutOfMemory(cx_); |
| 2124 | return false; |
| 2125 | } |
| 2126 | AddCellMemory(script, sizeof(Breakpoint), MemoryUse::Breakpoint); |
| 2127 | |
| 2128 | return true; |
| 2129 | } |
| 2130 | ReturnType match(Handle<WasmInstanceObject*> wasmInstance) { |
| 2131 | wasm::Instance& instance = wasmInstance->instance(); |
| 2132 | if (!instance.debugEnabled() || |
| 2133 | !instance.debug().hasBreakpointTrapAtOffset(offset_)) { |
| 2134 | JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, |
| 2135 | JSMSG_DEBUG_BAD_OFFSET); |
| 2136 | return false; |
| 2137 | } |
| 2138 | |
| 2139 | // A Breakpoint belongs logically to its Instance's compartment, so its |
| 2140 | // references to its Debugger and handler must be properly wrapped. |
| 2141 | AutoRealm ar(cx_, wasmInstance); |
| 2142 | if (!wrapCrossCompartmentEdges()) { |
| 2143 | return false; |
| 2144 | } |
| 2145 | |
| 2146 | WasmBreakpointSite* site = instance.getOrCreateBreakpointSite(cx_, offset_); |
| 2147 | if (!site) { |
| 2148 | return false; |
| 2149 | } |
| 2150 | |
| 2151 | if (!cx_->zone()->new_<Breakpoint>(dbg_, debuggerObject_, site, handler_)) { |
| 2152 | site->destroyIfEmpty(cx_->runtime()->gcContext()); |
| 2153 | ReportOutOfMemory(cx_); |
| 2154 | return false; |
| 2155 | } |
| 2156 | AddCellMemory(wasmInstance, sizeof(Breakpoint), MemoryUse::Breakpoint); |
| 2157 | |
| 2158 | return true; |
| 2159 | } |
| 2160 | }; |
| 2161 | |
| 2162 | bool DebuggerScript::CallData::setBreakpoint() { |
| 2163 | if (!args.requireAtLeast(cx, "Debugger.Script.setBreakpoint", 2)) { |
| 2164 | return false; |
| 2165 | } |
| 2166 | Debugger* dbg = obj->owner(); |
| 2167 | |
| 2168 | size_t offset; |
| 2169 | if (!ScriptOffset(cx, args[0], &offset)) { |
| 2170 | return false; |
| 2171 | } |
| 2172 | |
| 2173 | RootedObject handler(cx, RequireObject(cx, args[1])); |
| 2174 | if (!handler) { |
| 2175 | return false; |
| 2176 | } |
| 2177 | |
| 2178 | SetBreakpointMatcher matcher(cx, dbg, offset, handler); |
| 2179 | if (!referent.match(matcher)) { |
| 2180 | return false; |
| 2181 | } |
| 2182 | args.rval().setUndefined(); |
| 2183 | return true; |
| 2184 | } |
| 2185 | |
| 2186 | bool DebuggerScript::CallData::getBreakpoints() { |
| 2187 | if (!ensureScript()) { |
| 2188 | return false; |
| 2189 | } |
| 2190 | Debugger* dbg = obj->owner(); |
| 2191 | |
| 2192 | jsbytecode* pc; |
| 2193 | if (args.length() > 0) { |
| 2194 | size_t offset; |
| 2195 | if (!ScriptOffset(cx, args[0], &offset) || |
| 2196 | !EnsureScriptOffsetIsValid(cx, script, offset)) { |
| 2197 | return false; |
| 2198 | } |
| 2199 | pc = script->offsetToPC(offset); |
| 2200 | } else { |
| 2201 | pc = nullptr; |
| 2202 | } |
| 2203 | |
| 2204 | RootedObject arr(cx, NewDenseEmptyArray(cx)); |
| 2205 | if (!arr) { |
| 2206 | return false; |
| 2207 | } |
| 2208 | |
| 2209 | for (unsigned i = 0; i < script->length(); i++) { |
| 2210 | JSBreakpointSite* site = |
| 2211 | DebugScript::getBreakpointSite(script, script->offsetToPC(i)); |
| 2212 | if (!site) { |
| 2213 | continue; |
| 2214 | } |
| 2215 | if (!pc || site->pc == pc) { |
| 2216 | for (Breakpoint* bp = site->firstBreakpoint(); bp; |
| 2217 | bp = bp->nextInSite()) { |
| 2218 | if (bp->debugger == dbg) { |
| 2219 | RootedObject handler(cx, bp->getHandler()); |
| 2220 | if (!cx->compartment()->wrap(cx, &handler) || |
| 2221 | !NewbornArrayPush(cx, arr, ObjectValue(*handler))) { |
| 2222 | return false; |
| 2223 | } |
| 2224 | } |
| 2225 | } |
| 2226 | } |
| 2227 | } |
| 2228 | args.rval().setObject(*arr); |
| 2229 | return true; |
| 2230 | } |
| 2231 | |
| 2232 | class DebuggerScript::ClearBreakpointMatcher { |
| 2233 | JSContext* cx_; |
| 2234 | Debugger* dbg_; |
| 2235 | RootedObject handler_; |
| 2236 | |
| 2237 | public: |
| 2238 | ClearBreakpointMatcher(JSContext* cx, Debugger* dbg, JSObject* handler) |
| 2239 | : cx_(cx), dbg_(dbg), handler_(cx, handler) {} |
| 2240 | using ReturnType = bool; |
| 2241 | |
| 2242 | ReturnType match(Handle<BaseScript*> base) { |
| 2243 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 2244 | if (!script) { |
| 2245 | return false; |
| 2246 | } |
| 2247 | |
| 2248 | // A Breakpoint belongs logically to its script's compartment, so it holds |
| 2249 | // its handler via a cross-compartment wrapper. But the handler passed to |
| 2250 | // `clearBreakpoint` is same-compartment with the Debugger. Wrap it here, |
| 2251 | // so that `DebugScript::clearBreakpointsIn` gets the right value to |
| 2252 | // search for. |
| 2253 | AutoRealm ar(cx_, script); |
| 2254 | if (!cx_->compartment()->wrap(cx_, &handler_)) { |
| 2255 | return false; |
| 2256 | } |
| 2257 | |
| 2258 | DebugScript::clearBreakpointsIn(cx_->runtime()->gcContext(), script, dbg_, |
| 2259 | handler_); |
| 2260 | return true; |
| 2261 | } |
| 2262 | ReturnType match(Handle<WasmInstanceObject*> instanceObj) { |
| 2263 | wasm::Instance& instance = instanceObj->instance(); |
| 2264 | if (!instance.debugEnabled()) { |
| 2265 | return true; |
| 2266 | } |
| 2267 | |
| 2268 | // A Breakpoint belongs logically to its instance's compartment, so it |
| 2269 | // holds its handler via a cross-compartment wrapper. But the handler |
| 2270 | // passed to `clearBreakpoint` is same-compartment with the Debugger. Wrap |
| 2271 | // it here, so that `DebugState::clearBreakpointsIn` gets the right value |
| 2272 | // to search for. |
| 2273 | AutoRealm ar(cx_, instanceObj); |
| 2274 | if (!cx_->compartment()->wrap(cx_, &handler_)) { |
| 2275 | return false; |
| 2276 | } |
| 2277 | |
| 2278 | instance.debug().clearBreakpointsIn(cx_->runtime()->gcContext(), |
| 2279 | instanceObj, dbg_, handler_); |
| 2280 | return true; |
| 2281 | } |
| 2282 | }; |
| 2283 | |
| 2284 | bool DebuggerScript::CallData::clearBreakpoint() { |
| 2285 | if (!args.requireAtLeast(cx, "Debugger.Script.clearBreakpoint", 1)) { |
| 2286 | return false; |
| 2287 | } |
| 2288 | Debugger* dbg = obj->owner(); |
| 2289 | |
| 2290 | JSObject* handler = RequireObject(cx, args[0]); |
| 2291 | if (!handler) { |
| 2292 | return false; |
| 2293 | } |
| 2294 | |
| 2295 | ClearBreakpointMatcher matcher(cx, dbg, handler); |
| 2296 | if (!referent.match(matcher)) { |
| 2297 | return false; |
| 2298 | } |
| 2299 | |
| 2300 | args.rval().setUndefined(); |
| 2301 | return true; |
| 2302 | } |
| 2303 | |
| 2304 | bool DebuggerScript::CallData::clearAllBreakpoints() { |
| 2305 | Debugger* dbg = obj->owner(); |
| 2306 | ClearBreakpointMatcher matcher(cx, dbg, nullptr); |
| 2307 | if (!referent.match(matcher)) { |
| 2308 | return false; |
| 2309 | } |
| 2310 | args.rval().setUndefined(); |
| 2311 | return true; |
| 2312 | } |
| 2313 | |
| 2314 | class DebuggerScript::IsInCatchScopeMatcher { |
| 2315 | JSContext* cx_; |
| 2316 | size_t offset_; |
| 2317 | bool isInCatch_; |
| 2318 | |
| 2319 | public: |
| 2320 | explicit IsInCatchScopeMatcher(JSContext* cx, size_t offset) |
| 2321 | : cx_(cx), offset_(offset), isInCatch_(false) {} |
| 2322 | using ReturnType = bool; |
| 2323 | |
| 2324 | inline bool isInCatch() const { return isInCatch_; } |
| 2325 | |
| 2326 | ReturnType match(Handle<BaseScript*> base) { |
| 2327 | RootedScript script(cx_, DelazifyScript(cx_, base)); |
| 2328 | if (!script) { |
| 2329 | return false; |
| 2330 | } |
| 2331 | |
| 2332 | if (!EnsureScriptOffsetIsValid(cx_, script, offset_)) { |
| 2333 | return false; |
| 2334 | } |
| 2335 | |
| 2336 | MOZ_ASSERT(!isInCatch_)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!isInCatch_)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!isInCatch_))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!isInCatch_", "./../../../../js/src/debugger/Script.cpp" , 2336); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!isInCatch_" ")"); do { MOZ_CrashSequence(__null, 2336); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2337 | |
| 2338 | auto inRange = [this](const TryNote& tn) { |
| 2339 | return tn.start <= offset_ && offset_ < tn.start + tn.length; |
| 2340 | }; |
| 2341 | auto notes = script->trynotes(); |
| 2342 | |
| 2343 | for (size_t i = 0; i < notes.size(); i++) { |
| 2344 | const TryNote& tn = notes[i]; |
| 2345 | if (tn.kind() != TryNoteKind::Catch || !inRange(tn)) { |
| 2346 | continue; |
| 2347 | } |
| 2348 | |
| 2349 | // For-of loops generate a synthetic catch block to handle |
| 2350 | // closing the iterator when throwing an exception. The |
| 2351 | // debugger should ignore these synthetic catch blocks, so |
| 2352 | // we skip any Catch trynote that is immediately followed |
| 2353 | // by a ForOf trynote. |
| 2354 | if (i + 1 < notes.size() && notes[i + 1].kind() == TryNoteKind::ForOf && |
| 2355 | inRange(notes[i + 1])) { |
| 2356 | continue; |
| 2357 | } |
| 2358 | |
| 2359 | isInCatch_ = true; |
| 2360 | return true; |
| 2361 | } |
| 2362 | |
| 2363 | return true; |
| 2364 | } |
| 2365 | ReturnType match(Handle<WasmInstanceObject*> instance) { |
| 2366 | isInCatch_ = false; |
| 2367 | return true; |
| 2368 | } |
| 2369 | }; |
| 2370 | |
| 2371 | bool DebuggerScript::CallData::isInCatchScope() { |
| 2372 | if (!args.requireAtLeast(cx, "Debugger.Script.isInCatchScope", 1)) { |
| 2373 | return false; |
| 2374 | } |
| 2375 | |
| 2376 | size_t offset; |
| 2377 | if (!ScriptOffset(cx, args[0], &offset)) { |
| 2378 | return false; |
| 2379 | } |
| 2380 | |
| 2381 | IsInCatchScopeMatcher matcher(cx, offset); |
| 2382 | if (!referent.match(matcher)) { |
| 2383 | return false; |
| 2384 | } |
| 2385 | args.rval().setBoolean(matcher.isInCatch()); |
| 2386 | return true; |
| 2387 | } |
| 2388 | |
| 2389 | bool DebuggerScript::CallData::getOffsetsCoverage() { |
| 2390 | if (!ensureScript()) { |
| 2391 | return false; |
| 2392 | } |
| 2393 | |
| 2394 | Debugger* dbg = obj->owner(); |
| 2395 | if (dbg->observesCoverage() != Debugger::Observing) { |
| 2396 | args.rval().setNull(); |
| 2397 | return true; |
| 2398 | } |
| 2399 | |
| 2400 | // If the script has no coverage information, then skip this and return null |
| 2401 | // instead. |
| 2402 | if (!script->hasScriptCounts()) { |
| 2403 | args.rval().setNull(); |
| 2404 | return true; |
| 2405 | } |
| 2406 | |
| 2407 | ScriptCounts* sc = &script->getScriptCounts(); |
| 2408 | |
| 2409 | // If the main ever got visited, then assume that any code before main got |
| 2410 | // visited once. |
| 2411 | uint64_t hits = 0; |
| 2412 | const PCCounts* counts = |
| 2413 | sc->maybeGetPCCounts(script->pcToOffset(script->main())); |
| 2414 | if (counts->numExec()) { |
| 2415 | hits = 1; |
| 2416 | } |
| 2417 | |
| 2418 | // Build an array of objects which are composed of 4 properties: |
| 2419 | // - offset PC offset of the current opcode. |
| 2420 | // - lineNumber Line of the current opcode. |
| 2421 | // - columnNumber Column of the current opcode. |
| 2422 | // - count Number of times the instruction got executed. |
| 2423 | RootedObject result(cx, NewDenseEmptyArray(cx)); |
| 2424 | if (!result) { |
| 2425 | return false; |
| 2426 | } |
| 2427 | |
| 2428 | RootedId offsetId(cx, NameToId(cx->names().offset)); |
| 2429 | RootedId lineNumberId(cx, NameToId(cx->names().lineNumber)); |
| 2430 | RootedId columnNumberId(cx, NameToId(cx->names().columnNumber)); |
| 2431 | RootedId countId(cx, NameToId(cx->names().count)); |
| 2432 | |
| 2433 | RootedObject item(cx); |
| 2434 | RootedValue offsetValue(cx); |
| 2435 | RootedValue lineNumberValue(cx); |
| 2436 | RootedValue columnNumberValue(cx); |
| 2437 | RootedValue countValue(cx); |
| 2438 | |
| 2439 | // Iterate linearly over the bytecode. |
| 2440 | for (BytecodeRangeWithPosition r(cx, script, SkipPrologueOps::Yes); |
| 2441 | !r.empty(); r.popFront()) { |
| 2442 | size_t offset = r.frontOffset(); |
| 2443 | |
| 2444 | // The beginning of each non-branching sequences of instruction set the |
| 2445 | // number of execution of the current instruction and any following |
| 2446 | // instruction. |
| 2447 | counts = sc->maybeGetPCCounts(offset); |
| 2448 | if (counts) { |
| 2449 | hits = counts->numExec(); |
| 2450 | } |
| 2451 | |
| 2452 | offsetValue.setNumber(double(offset)); |
| 2453 | lineNumberValue.setNumber(double(r.frontLineNumber())); |
| 2454 | columnNumberValue.setNumber(double(r.frontColumnNumber().oneOriginValue())); |
| 2455 | countValue.setNumber(double(hits)); |
| 2456 | |
| 2457 | // Create a new object with the offset, line number, column number, the |
| 2458 | // number of hit counts, and append it to the array. |
| 2459 | item = NewPlainObjectWithProto(cx, nullptr); |
| 2460 | if (!item || !DefineDataProperty(cx, item, offsetId, offsetValue) || |
| 2461 | !DefineDataProperty(cx, item, lineNumberId, lineNumberValue) || |
| 2462 | !DefineDataProperty(cx, item, columnNumberId, columnNumberValue) || |
| 2463 | !DefineDataProperty(cx, item, countId, countValue) || |
| 2464 | !NewbornArrayPush(cx, result, ObjectValue(*item))) { |
| 2465 | return false; |
| 2466 | } |
| 2467 | |
| 2468 | // If the current instruction has thrown, then decrement the hit counts |
| 2469 | // with the number of throws. |
| 2470 | counts = sc->maybeGetThrowCounts(offset); |
| 2471 | if (counts) { |
| 2472 | hits -= counts->numExec(); |
| 2473 | } |
| 2474 | } |
| 2475 | |
| 2476 | args.rval().setObject(*result); |
| 2477 | return true; |
| 2478 | } |
| 2479 | |
| 2480 | /* static */ |
| 2481 | bool DebuggerScript::construct(JSContext* cx, unsigned argc, Value* vp) { |
| 2482 | JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_NO_CONSTRUCTOR, |
| 2483 | "Debugger.Script"); |
| 2484 | return false; |
| 2485 | } |
| 2486 | |
| 2487 | const JSPropertySpec DebuggerScript::properties_[] = { |
| 2488 | JS_DEBUG_PSG("isGeneratorFunction", getIsGeneratorFunction)JSPropertySpec::nativeAccessors("isGeneratorFunction", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getIsGeneratorFunction >, nullptr), |
| 2489 | JS_DEBUG_PSG("isAsyncFunction", getIsAsyncFunction)JSPropertySpec::nativeAccessors("isAsyncFunction", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getIsAsyncFunction >, nullptr), |
| 2490 | JS_DEBUG_PSG("isFunction", getIsFunction)JSPropertySpec::nativeAccessors("isFunction", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getIsFunction >, nullptr), |
| 2491 | JS_DEBUG_PSG("isModule", getIsModule)JSPropertySpec::nativeAccessors("isModule", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getIsModule >, nullptr), |
| 2492 | JS_DEBUG_PSG("displayName", getDisplayName)JSPropertySpec::nativeAccessors("displayName", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getDisplayName >, nullptr), |
| 2493 | JS_DEBUG_PSG("parameterNames", getParameterNames)JSPropertySpec::nativeAccessors("parameterNames", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getParameterNames >, nullptr), |
| 2494 | JS_DEBUG_PSG("url", getUrl)JSPropertySpec::nativeAccessors("url", CheckAccessorAttrs< 0>(), CallData::ToNative<&CallData::getUrl>, nullptr ), |
| 2495 | JS_DEBUG_PSG("startLine", getStartLine)JSPropertySpec::nativeAccessors("startLine", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getStartLine >, nullptr), |
| 2496 | JS_DEBUG_PSG("startColumn", getStartColumn)JSPropertySpec::nativeAccessors("startColumn", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getStartColumn >, nullptr), |
| 2497 | JS_DEBUG_PSG("lineCount", getLineCount)JSPropertySpec::nativeAccessors("lineCount", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getLineCount >, nullptr), |
| 2498 | JS_DEBUG_PSG("source", getSource)JSPropertySpec::nativeAccessors("source", CheckAccessorAttrs< 0>(), CallData::ToNative<&CallData::getSource>, nullptr ), |
| 2499 | JS_DEBUG_PSG("sourceStart", getSourceStart)JSPropertySpec::nativeAccessors("sourceStart", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getSourceStart >, nullptr), |
| 2500 | JS_DEBUG_PSG("sourceLength", getSourceLength)JSPropertySpec::nativeAccessors("sourceLength", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getSourceLength >, nullptr), |
| 2501 | JS_DEBUG_PSG("mainOffset", getMainOffset)JSPropertySpec::nativeAccessors("mainOffset", CheckAccessorAttrs <0>(), CallData::ToNative<&CallData::getMainOffset >, nullptr), |
| 2502 | JS_DEBUG_PSG("global", getGlobal)JSPropertySpec::nativeAccessors("global", CheckAccessorAttrs< 0>(), CallData::ToNative<&CallData::getGlobal>, nullptr ), |
| 2503 | JS_DEBUG_PSG("format", getFormat)JSPropertySpec::nativeAccessors("format", CheckAccessorAttrs< 0>(), CallData::ToNative<&CallData::getFormat>, nullptr ), |
| 2504 | JS_PS_ENDJSPropertySpec::sentinel(), |
| 2505 | }; |
| 2506 | |
| 2507 | const JSFunctionSpec DebuggerScript::methods_[] = { |
| 2508 | JS_DEBUG_FN("getChildScripts", getChildScripts, 0){JSFunctionSpec::Name("getChildScripts"), {CallData::ToNative <&CallData::getChildScripts>, nullptr}, 0, 0, nullptr }, |
| 2509 | JS_DEBUG_FN("getPossibleBreakpoints", getPossibleBreakpoints, 0){JSFunctionSpec::Name("getPossibleBreakpoints"), {CallData::ToNative <&CallData::getPossibleBreakpoints>, nullptr}, 0, 0 , nullptr}, |
| 2510 | JS_DEBUG_FN("getPossibleBreakpointOffsets", getPossibleBreakpointOffsets,{JSFunctionSpec::Name("getPossibleBreakpointOffsets"), {CallData ::ToNative<&CallData::getPossibleBreakpointOffsets> , nullptr}, 0, 0, nullptr} |
| 2511 | 0){JSFunctionSpec::Name("getPossibleBreakpointOffsets"), {CallData ::ToNative<&CallData::getPossibleBreakpointOffsets> , nullptr}, 0, 0, nullptr}, |
| 2512 | JS_DEBUG_FN("setBreakpoint", setBreakpoint, 2){JSFunctionSpec::Name("setBreakpoint"), {CallData::ToNative< &CallData::setBreakpoint>, nullptr}, 2, 0, nullptr}, |
| 2513 | JS_DEBUG_FN("getBreakpoints", getBreakpoints, 1){JSFunctionSpec::Name("getBreakpoints"), {CallData::ToNative< &CallData::getBreakpoints>, nullptr}, 1, 0, nullptr}, |
| 2514 | JS_DEBUG_FN("clearBreakpoint", clearBreakpoint, 1){JSFunctionSpec::Name("clearBreakpoint"), {CallData::ToNative <&CallData::clearBreakpoint>, nullptr}, 1, 0, nullptr }, |
| 2515 | JS_DEBUG_FN("clearAllBreakpoints", clearAllBreakpoints, 0){JSFunctionSpec::Name("clearAllBreakpoints"), {CallData::ToNative <&CallData::clearAllBreakpoints>, nullptr}, 0, 0, nullptr }, |
| 2516 | JS_DEBUG_FN("isInCatchScope", isInCatchScope, 1){JSFunctionSpec::Name("isInCatchScope"), {CallData::ToNative< &CallData::isInCatchScope>, nullptr}, 1, 0, nullptr}, |
| 2517 | JS_DEBUG_FN("getOffsetMetadata", getOffsetMetadata, 1){JSFunctionSpec::Name("getOffsetMetadata"), {CallData::ToNative <&CallData::getOffsetMetadata>, nullptr}, 1, 0, nullptr }, |
| 2518 | JS_DEBUG_FN("getOffsetsCoverage", getOffsetsCoverage, 0){JSFunctionSpec::Name("getOffsetsCoverage"), {CallData::ToNative <&CallData::getOffsetsCoverage>, nullptr}, 0, 0, nullptr }, |
| 2519 | JS_DEBUG_FN("getEffectfulOffsets", getEffectfulOffsets, 1){JSFunctionSpec::Name("getEffectfulOffsets"), {CallData::ToNative <&CallData::getEffectfulOffsets>, nullptr}, 1, 0, nullptr }, |
| 2520 | |
| 2521 | // The following APIs are deprecated due to their reliance on the |
| 2522 | // under-defined 'entrypoint' concept. Make use of getPossibleBreakpoints, |
| 2523 | // getPossibleBreakpointOffsets, or getOffsetMetadata instead. |
| 2524 | JS_DEBUG_FN("getAllOffsets", getAllOffsets, 0){JSFunctionSpec::Name("getAllOffsets"), {CallData::ToNative< &CallData::getAllOffsets>, nullptr}, 0, 0, nullptr}, |
| 2525 | JS_DEBUG_FN("getAllColumnOffsets", getAllColumnOffsets, 0){JSFunctionSpec::Name("getAllColumnOffsets"), {CallData::ToNative <&CallData::getAllColumnOffsets>, nullptr}, 0, 0, nullptr }, |
| 2526 | JS_DEBUG_FN("getLineOffsets", getLineOffsets, 1){JSFunctionSpec::Name("getLineOffsets"), {CallData::ToNative< &CallData::getLineOffsets>, nullptr}, 1, 0, nullptr}, |
| 2527 | JS_DEBUG_FN("getOffsetLocation", getOffsetLocation, 0){JSFunctionSpec::Name("getOffsetLocation"), {CallData::ToNative <&CallData::getOffsetLocation>, nullptr}, 0, 0, nullptr }, |
| 2528 | JS_FS_END{JSFunctionSpec::Name(nullptr), {nullptr, nullptr}, 0, 0, nullptr }, |
| 2529 | }; |