| File: | root/firefox-clang/obj-x86_64-pc-linux-gnu/js/src/frontend/./../../../../js/src/frontend/BytecodeEmitter.cpp |
| Warning: | line 831, column 3 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 | /* |
| 6 | * JS bytecode generation. |
| 7 | */ |
| 8 | |
| 9 | #include "frontend/BytecodeEmitter.h" |
| 10 | |
| 11 | #include "mozilla/Casting.h" // mozilla::AssertedCast |
| 12 | #include "mozilla/DebugOnly.h" // mozilla::DebugOnly |
| 13 | #include "mozilla/FloatingPoint.h" // mozilla::NumberEqualsInt32, mozilla::NumberIsInt32 |
| 14 | #include "mozilla/HashTable.h" // mozilla::HashSet |
| 15 | #include "mozilla/Maybe.h" // mozilla::{Maybe,Nothing,Some} |
| 16 | #include "mozilla/Saturate.h" |
| 17 | #include "mozilla/Variant.h" // mozilla::AsVariant |
| 18 | |
| 19 | #include <algorithm> |
| 20 | #include <iterator> |
| 21 | #include <string.h> |
| 22 | |
| 23 | #include "jstypes.h" // JS_BIT |
| 24 | |
| 25 | #include "frontend/AbstractScopePtr.h" // ScopeIndex |
| 26 | #include "frontend/BytecodeControlStructures.h" // NestableControl, BreakableControl, LabelControl, LoopControl, TryFinallyControl |
| 27 | #include "frontend/CallOrNewEmitter.h" // CallOrNewEmitter |
| 28 | #include "frontend/CForEmitter.h" // CForEmitter |
| 29 | #include "frontend/DecoratorEmitter.h" // DecoratorEmitter |
| 30 | #include "frontend/DefaultEmitter.h" // DefaultEmitter |
| 31 | #include "frontend/DoWhileEmitter.h" // DoWhileEmitter |
| 32 | #include "frontend/ElemOpEmitter.h" // ElemOpEmitter |
| 33 | #include "frontend/EmitterScope.h" // EmitterScope |
| 34 | #include "frontend/ExpressionStatementEmitter.h" // ExpressionStatementEmitter |
| 35 | #include "frontend/ForInEmitter.h" // ForInEmitter |
| 36 | #include "frontend/ForOfEmitter.h" // ForOfEmitter |
| 37 | #include "frontend/FrontendContext.h" // FrontendContext |
| 38 | #include "frontend/FunctionEmitter.h" // FunctionEmitter, FunctionScriptEmitter, FunctionParamsEmitter |
| 39 | #include "frontend/IfEmitter.h" // IfEmitter, InternalIfEmitter, CondEmitter |
| 40 | #include "frontend/LabelEmitter.h" // LabelEmitter |
| 41 | #include "frontend/LexicalScopeEmitter.h" // LexicalScopeEmitter |
| 42 | #include "frontend/ModuleSharedContext.h" // ModuleSharedContext |
| 43 | #include "frontend/NameAnalysisTypes.h" // PrivateNameKind |
| 44 | #include "frontend/NameFunctions.h" // NameFunctions |
| 45 | #include "frontend/NameOpEmitter.h" // NameOpEmitter |
| 46 | #include "frontend/ObjectEmitter.h" // PropertyEmitter, ObjectEmitter, ClassEmitter |
| 47 | #include "frontend/OptionalEmitter.h" // OptionalEmitter |
| 48 | #include "frontend/ParseContext.h" // ParseContext::Scope |
| 49 | #include "frontend/ParseNode.h" // ParseNodeKind, ParseNode and subclasses |
| 50 | #include "frontend/Parser.h" // Parser |
| 51 | #include "frontend/ParserAtom.h" // ParserAtomsTable, ParserAtom |
| 52 | #include "frontend/PrivateOpEmitter.h" // PrivateOpEmitter |
| 53 | #include "frontend/PropOpEmitter.h" // PropOpEmitter |
| 54 | #include "frontend/SourceNotes.h" // SrcNote, SrcNoteType, SrcNoteWriter |
| 55 | #include "frontend/SwitchEmitter.h" // SwitchEmitter |
| 56 | #include "frontend/TaggedParserAtomIndexHasher.h" // TaggedParserAtomIndexHasher |
| 57 | #include "frontend/TDZCheckCache.h" // TDZCheckCache |
| 58 | #include "frontend/TryEmitter.h" // TryEmitter |
| 59 | #include "frontend/UsingEmitter.h" // UsingEmitter |
| 60 | #include "frontend/WhileEmitter.h" // WhileEmitter |
| 61 | #include "js/ColumnNumber.h" // JS::LimitedColumnNumberOneOrigin, JS::ColumnNumberOffset |
| 62 | #include "js/friend/ErrorMessages.h" // JSMSG_* |
| 63 | #include "js/friend/StackLimits.h" // AutoCheckRecursionLimit |
| 64 | #include "util/StringBuilder.h" // StringBuilder |
| 65 | #include "vm/BytecodeUtil.h" // JOF_*, IsArgOp, IsLocalOp, SET_UINT24, SET_ICINDEX, BytecodeFallsThrough, BytecodeIsJumpTarget |
| 66 | #include "vm/CompletionKind.h" // CompletionKind |
| 67 | #include "vm/ConstantCompareOperand.h" // ConstantCompareOperand |
| 68 | #include "vm/FunctionPrefixKind.h" // FunctionPrefixKind |
| 69 | #include "vm/GeneratorObject.h" // AbstractGeneratorObject |
| 70 | #include "vm/Opcodes.h" // JSOp, JSOpLength_* |
| 71 | #include "vm/PropMap.h" // SharedPropMap::MaxPropsForNonDictionary |
| 72 | #include "vm/Scope.h" // GetScopeDataTrailingNames |
| 73 | #include "vm/SharedStencil.h" // ScopeNote |
| 74 | #include "vm/ThrowMsgKind.h" // ThrowMsgKind |
| 75 | #include "vm/TypeofEqOperand.h" // TypeofEqOperand |
| 76 | |
| 77 | using namespace js; |
| 78 | using namespace js::frontend; |
| 79 | |
| 80 | using mozilla::AssertedCast; |
| 81 | using mozilla::AsVariant; |
| 82 | using mozilla::DebugOnly; |
| 83 | using mozilla::Maybe; |
| 84 | using mozilla::Nothing; |
| 85 | using mozilla::NumberEqualsInt32; |
| 86 | using mozilla::NumberIsInt32; |
| 87 | using mozilla::Some; |
| 88 | |
| 89 | static bool ParseNodeRequiresSpecialLineNumberNotes(ParseNode* pn) { |
| 90 | // The few node types listed below are exceptions to the usual |
| 91 | // location-source-note-emitting code in BytecodeEmitter::emitTree(). |
| 92 | // Single-line `while` loops and C-style `for` loops require careful |
| 93 | // handling to avoid strange stepping behavior. |
| 94 | // Functions usually shouldn't have location information (bug 1431202). |
| 95 | |
| 96 | ParseNodeKind kind = pn->getKind(); |
| 97 | return kind == ParseNodeKind::WhileStmt || kind == ParseNodeKind::ForStmt || |
| 98 | kind == ParseNodeKind::Function; |
| 99 | } |
| 100 | |
| 101 | static bool NeedsFieldInitializer(ParseNode* member, bool inStaticContext) { |
| 102 | // For the purposes of bytecode emission, StaticClassBlocks are treated as if |
| 103 | // they were static initializers. |
| 104 | return (member->is<StaticClassBlock>() && inStaticContext) || |
| 105 | (member->is<ClassField>() && |
| 106 | member->as<ClassField>().isStatic() == inStaticContext); |
| 107 | } |
| 108 | |
| 109 | static bool NeedsAccessorInitializer(ParseNode* member, bool isStatic) { |
| 110 | if (isStatic) { |
| 111 | return false; |
| 112 | } |
| 113 | return member->is<ClassMethod>() && |
| 114 | member->as<ClassMethod>().name().isKind(ParseNodeKind::PrivateName) && |
| 115 | !member->as<ClassMethod>().isStatic() && |
| 116 | member->as<ClassMethod>().accessorType() != AccessorType::None; |
| 117 | } |
| 118 | |
| 119 | static bool ShouldSuppressBreakpointsAndSourceNotes( |
| 120 | SharedContext* sc, BytecodeEmitter::EmitterMode emitterMode) { |
| 121 | // Suppress for all self-hosting code. |
| 122 | if (emitterMode == BytecodeEmitter::EmitterMode::SelfHosting) { |
| 123 | return true; |
| 124 | } |
| 125 | |
| 126 | // Suppress for synthesized class constructors. |
| 127 | if (sc->isFunctionBox()) { |
| 128 | FunctionBox* funbox = sc->asFunctionBox(); |
| 129 | return funbox->isSyntheticFunction() && funbox->isClassConstructor(); |
| 130 | } |
| 131 | |
| 132 | return false; |
| 133 | } |
| 134 | |
| 135 | BytecodeEmitter::BytecodeEmitter(BytecodeEmitter* parent, FrontendContext* fc, |
| 136 | SharedContext* sc, |
| 137 | const ErrorReporter& errorReporter, |
| 138 | CompilationState& compilationState, |
| 139 | EmitterMode emitterMode) |
| 140 | : sc(sc), |
| 141 | fc(fc), |
| 142 | parent(parent), |
| 143 | bytecodeSection_(fc, sc->extent().lineno, |
| 144 | JS::LimitedColumnNumberOneOrigin(sc->extent().column)), |
| 145 | perScriptData_(fc, compilationState), |
| 146 | errorReporter_(errorReporter), |
| 147 | compilationState(compilationState), |
| 148 | suppressBreakpointsAndSourceNotes( |
| 149 | ShouldSuppressBreakpointsAndSourceNotes(sc, emitterMode)), |
| 150 | emitterMode(emitterMode) { |
| 151 | MOZ_ASSERT_IF(parent, fc == parent->fc)do { if (parent) { do { static_assert( mozilla::detail::AssertionConditionType <decltype(fc == parent->fc)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(fc == parent->fc))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("fc == parent->fc" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 151); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "fc == parent->fc" ")"); do { MOZ_CrashSequence (__null, 151); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); } } while (false); |
| 152 | } |
| 153 | |
| 154 | BytecodeEmitter::BytecodeEmitter(BytecodeEmitter* parent, SharedContext* sc) |
| 155 | : BytecodeEmitter(parent, parent->fc, sc, parent->errorReporter_, |
| 156 | parent->compilationState, parent->emitterMode) {} |
| 157 | |
| 158 | BytecodeEmitter::BytecodeEmitter(FrontendContext* fc, |
| 159 | const EitherParser& parser, SharedContext* sc, |
| 160 | CompilationState& compilationState, |
| 161 | EmitterMode emitterMode) |
| 162 | : BytecodeEmitter(nullptr, fc, sc, parser.errorReporter(), compilationState, |
| 163 | emitterMode) { |
| 164 | ep_.emplace(parser); |
| 165 | } |
| 166 | |
| 167 | void BytecodeEmitter::initFromBodyPosition(TokenPos bodyPosition) { |
| 168 | setScriptStartOffsetIfUnset(bodyPosition.begin); |
| 169 | setFunctionBodyEndPos(bodyPosition.end); |
| 170 | } |
| 171 | |
| 172 | bool BytecodeEmitter::init() { |
| 173 | if (!parent) { |
| 174 | if (!compilationState.prepareSharedDataStorage(fc)) { |
| 175 | return false; |
| 176 | } |
| 177 | } |
| 178 | return perScriptData_.init(fc); |
| 179 | } |
| 180 | |
| 181 | bool BytecodeEmitter::init(TokenPos bodyPosition) { |
| 182 | initFromBodyPosition(bodyPosition); |
| 183 | return init(); |
| 184 | } |
| 185 | |
| 186 | template <typename T> |
| 187 | T* BytecodeEmitter::findInnermostNestableControl() const { |
| 188 | return NestableControl::findNearest<T>(innermostNestableControl); |
| 189 | } |
| 190 | |
| 191 | template <typename T, typename Predicate /* (T*) -> bool */> |
| 192 | T* BytecodeEmitter::findInnermostNestableControl(Predicate predicate) const { |
| 193 | return NestableControl::findNearest<T>(innermostNestableControl, predicate); |
| 194 | } |
| 195 | |
| 196 | NameLocation BytecodeEmitter::lookupName(TaggedParserAtomIndex name) { |
| 197 | return innermostEmitterScope()->lookup(this, name); |
| 198 | } |
| 199 | |
| 200 | void BytecodeEmitter::lookupPrivate(TaggedParserAtomIndex name, |
| 201 | NameLocation& loc, |
| 202 | Maybe<NameLocation>& brandLoc) { |
| 203 | innermostEmitterScope()->lookupPrivate(this, name, loc, brandLoc); |
| 204 | } |
| 205 | |
| 206 | Maybe<NameLocation> BytecodeEmitter::locationOfNameBoundInScope( |
| 207 | TaggedParserAtomIndex name, EmitterScope* target) { |
| 208 | return innermostEmitterScope()->locationBoundInScope(name, target); |
| 209 | } |
| 210 | |
| 211 | template <typename T> |
| 212 | Maybe<NameLocation> BytecodeEmitter::locationOfNameBoundInScopeType( |
| 213 | TaggedParserAtomIndex name, EmitterScope* source) { |
| 214 | EmitterScope* aScope = source; |
| 215 | while (!aScope->scope(this).is<T>()) { |
| 216 | aScope = aScope->enclosingInFrame(); |
| 217 | } |
| 218 | return source->locationBoundInScope(name, aScope); |
| 219 | } |
| 220 | |
| 221 | bool BytecodeEmitter::markStepBreakpoint() { |
| 222 | if (skipBreakpointSrcNotes()) { |
| 223 | return true; |
| 224 | } |
| 225 | |
| 226 | if (!newSrcNote(SrcNoteType::BreakpointStepSep)) { |
| 227 | return false; |
| 228 | } |
| 229 | |
| 230 | // We track the location of the most recent separator for use in |
| 231 | // markSimpleBreakpoint. Note that this means that the position must already |
| 232 | // be set before markStepBreakpoint is called. |
| 233 | bytecodeSection().updateSeparatorPosition(); |
| 234 | |
| 235 | return true; |
| 236 | } |
| 237 | |
| 238 | bool BytecodeEmitter::markSimpleBreakpoint() { |
| 239 | if (skipBreakpointSrcNotes()) { |
| 240 | return true; |
| 241 | } |
| 242 | |
| 243 | // If a breakable call ends up being the same location as the most recent |
| 244 | // expression start, we need to skip marking it breakable in order to avoid |
| 245 | // having two breakpoints with the same line/column position. |
| 246 | // Note: This assumes that the position for the call has already been set. |
| 247 | if (!bytecodeSection().isDuplicateLocation()) { |
| 248 | if (!newSrcNote(SrcNoteType::Breakpoint)) { |
| 249 | return false; |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | return true; |
| 254 | } |
| 255 | |
| 256 | bool BytecodeEmitter::emitCheck(JSOp op, ptrdiff_t delta, |
| 257 | BytecodeOffset* offset) { |
| 258 | size_t oldLength = bytecodeSection().code().length(); |
| 259 | *offset = BytecodeOffset(oldLength); |
| 260 | |
| 261 | size_t newLength = oldLength + size_t(delta); |
| 262 | if (MOZ_UNLIKELY(newLength > MaxBytecodeLength)(__builtin_expect(!!(newLength > MaxBytecodeLength), 0))) { |
| 263 | ReportAllocationOverflow(fc); |
| 264 | return false; |
| 265 | } |
| 266 | |
| 267 | if (!bytecodeSection().code().growByUninitialized(delta)) { |
| 268 | return false; |
| 269 | } |
| 270 | |
| 271 | if (BytecodeOpHasIC(op)) { |
| 272 | // Even if every bytecode op is a JOF_IC op and the function has ARGC_LIMIT |
| 273 | // arguments, numICEntries cannot overflow. |
| 274 | static_assert(MaxBytecodeLength + 1 /* this */ + ARGC_LIMIT <= UINT32_MAX(4294967295U), |
| 275 | "numICEntries must not overflow"); |
| 276 | bytecodeSection().incrementNumICEntries(); |
| 277 | } |
| 278 | |
| 279 | return true; |
| 280 | } |
| 281 | |
| 282 | #ifdef DEBUG1 |
| 283 | bool BytecodeEmitter::checkStrictOrSloppy(JSOp op) const { |
| 284 | if (IsCheckStrictOp(op) && !sc->strict()) { |
| 285 | return false; |
| 286 | } |
| 287 | if (IsCheckSloppyOp(op) && sc->strict()) { |
| 288 | return false; |
| 289 | } |
| 290 | return true; |
| 291 | } |
| 292 | #endif |
| 293 | |
| 294 | bool BytecodeEmitter::emit1(JSOp op) { |
| 295 | MOZ_ASSERT(checkStrictOrSloppy(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(checkStrictOrSloppy(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(checkStrictOrSloppy(op)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("checkStrictOrSloppy(op)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 295); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "checkStrictOrSloppy(op)" ")"); do { MOZ_CrashSequence (__null, 295); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 296 | MOZ_ASSERT(GetOpLength(op) == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetOpLength(op) == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(GetOpLength(op) == 1))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("GetOpLength(op) == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 296); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "GetOpLength(op) == 1" ")"); do { MOZ_CrashSequence (__null, 296); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 297 | |
| 298 | BytecodeOffset offset; |
| 299 | if (!emitCheck(op, 1, &offset)) { |
| 300 | return false; |
| 301 | } |
| 302 | |
| 303 | jsbytecode* code = bytecodeSection().code(offset); |
| 304 | code[0] = jsbytecode(op); |
| 305 | bytecodeSection().updateDepth(op, offset); |
| 306 | return true; |
| 307 | } |
| 308 | |
| 309 | bool BytecodeEmitter::emit2(JSOp op, uint8_t op1) { |
| 310 | MOZ_ASSERT(checkStrictOrSloppy(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(checkStrictOrSloppy(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(checkStrictOrSloppy(op)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("checkStrictOrSloppy(op)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 310); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "checkStrictOrSloppy(op)" ")"); do { MOZ_CrashSequence (__null, 310); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 311 | MOZ_ASSERT(GetOpLength(op) == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetOpLength(op) == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(GetOpLength(op) == 2))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("GetOpLength(op) == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 311); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "GetOpLength(op) == 2" ")"); do { MOZ_CrashSequence (__null, 311); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 312 | |
| 313 | BytecodeOffset offset; |
| 314 | if (!emitCheck(op, 2, &offset)) { |
| 315 | return false; |
| 316 | } |
| 317 | |
| 318 | jsbytecode* code = bytecodeSection().code(offset); |
| 319 | code[0] = jsbytecode(op); |
| 320 | code[1] = jsbytecode(op1); |
| 321 | bytecodeSection().updateDepth(op, offset); |
| 322 | return true; |
| 323 | } |
| 324 | |
| 325 | bool BytecodeEmitter::emit3(JSOp op, jsbytecode op1, jsbytecode op2) { |
| 326 | MOZ_ASSERT(checkStrictOrSloppy(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(checkStrictOrSloppy(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(checkStrictOrSloppy(op)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("checkStrictOrSloppy(op)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 326); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "checkStrictOrSloppy(op)" ")"); do { MOZ_CrashSequence (__null, 326); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 327 | MOZ_ASSERT(GetOpLength(op) == 3)do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetOpLength(op) == 3)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(GetOpLength(op) == 3))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("GetOpLength(op) == 3" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 327); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "GetOpLength(op) == 3" ")"); do { MOZ_CrashSequence (__null, 327); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 328 | |
| 329 | /* These should filter through emitVarOp. */ |
| 330 | MOZ_ASSERT(!IsArgOp(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsArgOp(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!IsArgOp(op)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!IsArgOp(op)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 330); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!IsArgOp(op)" ")"); do { MOZ_CrashSequence(__null, 330); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 331 | MOZ_ASSERT(!IsLocalOp(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!IsLocalOp(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!IsLocalOp(op)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!IsLocalOp(op)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 331); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!IsLocalOp(op)" ")"); do { MOZ_CrashSequence (__null, 331); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 332 | |
| 333 | BytecodeOffset offset; |
| 334 | if (!emitCheck(op, 3, &offset)) { |
| 335 | return false; |
| 336 | } |
| 337 | |
| 338 | jsbytecode* code = bytecodeSection().code(offset); |
| 339 | code[0] = jsbytecode(op); |
| 340 | code[1] = op1; |
| 341 | code[2] = op2; |
| 342 | bytecodeSection().updateDepth(op, offset); |
| 343 | return true; |
| 344 | } |
| 345 | |
| 346 | bool BytecodeEmitter::emitN(JSOp op, size_t extra, BytecodeOffset* offset) { |
| 347 | MOZ_ASSERT(checkStrictOrSloppy(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(checkStrictOrSloppy(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(checkStrictOrSloppy(op)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("checkStrictOrSloppy(op)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 347); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "checkStrictOrSloppy(op)" ")"); do { MOZ_CrashSequence (__null, 347); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 348 | ptrdiff_t length = 1 + ptrdiff_t(extra); |
| 349 | |
| 350 | BytecodeOffset off; |
| 351 | if (!emitCheck(op, length, &off)) { |
| 352 | return false; |
| 353 | } |
| 354 | |
| 355 | jsbytecode* code = bytecodeSection().code(off); |
| 356 | code[0] = jsbytecode(op); |
| 357 | /* The remaining |extra| bytes are set by the caller */ |
| 358 | |
| 359 | /* |
| 360 | * Don't updateDepth if op's use-count comes from the immediate |
| 361 | * operand yet to be stored in the extra bytes after op. |
| 362 | */ |
| 363 | if (CodeSpec(op).nuses >= 0) { |
| 364 | bytecodeSection().updateDepth(op, off); |
| 365 | } |
| 366 | |
| 367 | if (offset) { |
| 368 | *offset = off; |
| 369 | } |
| 370 | return true; |
| 371 | } |
| 372 | |
| 373 | bool BytecodeEmitter::emitJumpTargetOp(JSOp op, BytecodeOffset* off) { |
| 374 | MOZ_ASSERT(BytecodeIsJumpTarget(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(BytecodeIsJumpTarget(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(BytecodeIsJumpTarget(op)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("BytecodeIsJumpTarget(op)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 374); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "BytecodeIsJumpTarget(op)" ")"); do { MOZ_CrashSequence (__null, 374); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 375 | |
| 376 | // Record the current IC-entry index at start of this op. |
| 377 | uint32_t numEntries = bytecodeSection().numICEntries(); |
| 378 | |
| 379 | size_t n = GetOpLength(op) - 1; |
| 380 | MOZ_ASSERT(GetOpLength(op) >= 1 + ICINDEX_LEN)do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetOpLength(op) >= 1 + ICINDEX_LEN)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(GetOpLength(op) >= 1 + ICINDEX_LEN))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("GetOpLength(op) >= 1 + ICINDEX_LEN" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 380); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "GetOpLength(op) >= 1 + ICINDEX_LEN" ")" ); do { MOZ_CrashSequence(__null, 380); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 381 | |
| 382 | if (!emitN(op, n, off)) { |
| 383 | return false; |
| 384 | } |
| 385 | |
| 386 | SET_ICINDEX(bytecodeSection().code(*off), numEntries); |
| 387 | return true; |
| 388 | } |
| 389 | |
| 390 | bool BytecodeEmitter::emitJumpTarget(JumpTarget* target) { |
| 391 | BytecodeOffset off = bytecodeSection().offset(); |
| 392 | |
| 393 | // Alias consecutive jump targets. |
| 394 | if (bytecodeSection().lastTargetOffset().valid() && |
| 395 | off == bytecodeSection().lastTargetOffset() + |
| 396 | BytecodeOffsetDiff(JSOpLength_JumpTarget)) { |
| 397 | target->offset = bytecodeSection().lastTargetOffset(); |
| 398 | return true; |
| 399 | } |
| 400 | |
| 401 | target->offset = off; |
| 402 | bytecodeSection().setLastTargetOffset(off); |
| 403 | |
| 404 | BytecodeOffset opOff; |
| 405 | return emitJumpTargetOp(JSOp::JumpTarget, &opOff); |
| 406 | } |
| 407 | |
| 408 | bool BytecodeEmitter::emitJumpNoFallthrough(JSOp op, JumpList* jump) { |
| 409 | BytecodeOffset offset; |
| 410 | if (!emitCheck(op, 5, &offset)) { |
| 411 | return false; |
| 412 | } |
| 413 | |
| 414 | jsbytecode* code = bytecodeSection().code(offset); |
| 415 | code[0] = jsbytecode(op); |
| 416 | MOZ_ASSERT(!jump->offset.valid() ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(!jump->offset.valid() || (0 <= jump->offset .value() && jump->offset < offset))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!jump->offset.valid() || (0 <= jump->offset.value () && jump->offset < offset)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!jump->offset.valid() || (0 <= jump->offset.value() && jump->offset < offset)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 417); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!jump->offset.valid() || (0 <= jump->offset.value() && jump->offset < offset)" ")"); do { MOZ_CrashSequence(__null, 417); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 417 | (0 <= jump->offset.value() && jump->offset < offset))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!jump->offset.valid() || (0 <= jump->offset .value() && jump->offset < offset))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!jump->offset.valid() || (0 <= jump->offset.value () && jump->offset < offset)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!jump->offset.valid() || (0 <= jump->offset.value() && jump->offset < offset)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 417); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!jump->offset.valid() || (0 <= jump->offset.value() && jump->offset < offset)" ")"); do { MOZ_CrashSequence(__null, 417); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 418 | jump->push(bytecodeSection().code(BytecodeOffset(0)), offset); |
| 419 | bytecodeSection().updateDepth(op, offset); |
| 420 | return true; |
| 421 | } |
| 422 | |
| 423 | bool BytecodeEmitter::emitJump(JSOp op, JumpList* jump) { |
| 424 | if (!emitJumpNoFallthrough(op, jump)) { |
| 425 | return false; |
| 426 | } |
| 427 | if (BytecodeFallsThrough(op)) { |
| 428 | JumpTarget fallthrough; |
| 429 | if (!emitJumpTarget(&fallthrough)) { |
| 430 | return false; |
| 431 | } |
| 432 | } |
| 433 | return true; |
| 434 | } |
| 435 | |
| 436 | void BytecodeEmitter::patchJumpsToTarget(JumpList jump, JumpTarget target) { |
| 437 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset()))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 439); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())" ")"); do { MOZ_CrashSequence(__null, 439); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 438 | !jump.offset.valid() ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset()))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 439); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())" ")"); do { MOZ_CrashSequence(__null, 439); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 439 | (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset()))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset()))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 439); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "!jump.offset.valid() || (0 <= jump.offset.value() && jump.offset <= bytecodeSection().offset())" ")"); do { MOZ_CrashSequence(__null, 439); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 440 | MOZ_ASSERT(0 <= target.offset.value() &&do { static_assert( mozilla::detail::AssertionConditionType< decltype(0 <= target.offset.value() && target.offset <= bytecodeSection().offset())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(0 <= target.offset.value( ) && target.offset <= bytecodeSection().offset())) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("0 <= target.offset.value() && target.offset <= bytecodeSection().offset()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 441); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "0 <= target.offset.value() && target.offset <= bytecodeSection().offset()" ")"); do { MOZ_CrashSequence(__null, 441); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 441 | target.offset <= bytecodeSection().offset())do { static_assert( mozilla::detail::AssertionConditionType< decltype(0 <= target.offset.value() && target.offset <= bytecodeSection().offset())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(0 <= target.offset.value( ) && target.offset <= bytecodeSection().offset())) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("0 <= target.offset.value() && target.offset <= bytecodeSection().offset()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 441); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "0 <= target.offset.value() && target.offset <= bytecodeSection().offset()" ")"); do { MOZ_CrashSequence(__null, 441); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 442 | MOZ_ASSERT_IF(do { if (jump.offset.valid() && target.offset + BytecodeOffsetDiff (4) <= bytecodeSection().offset()) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(BytecodeIsJumpTarget (JSOp(*bytecodeSection().code(target.offset))))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset )))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset)))" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 445); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset)))" ")"); do { MOZ_CrashSequence(__null, 445); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 443 | jump.offset.valid() &&do { if (jump.offset.valid() && target.offset + BytecodeOffsetDiff (4) <= bytecodeSection().offset()) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(BytecodeIsJumpTarget (JSOp(*bytecodeSection().code(target.offset))))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset )))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset)))" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 445); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset)))" ")"); do { MOZ_CrashSequence(__null, 445); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 444 | target.offset + BytecodeOffsetDiff(4) <= bytecodeSection().offset(),do { if (jump.offset.valid() && target.offset + BytecodeOffsetDiff (4) <= bytecodeSection().offset()) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(BytecodeIsJumpTarget (JSOp(*bytecodeSection().code(target.offset))))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset )))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset)))" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 445); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset)))" ")"); do { MOZ_CrashSequence(__null, 445); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 445 | BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset))))do { if (jump.offset.valid() && target.offset + BytecodeOffsetDiff (4) <= bytecodeSection().offset()) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(BytecodeIsJumpTarget (JSOp(*bytecodeSection().code(target.offset))))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset )))))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset)))" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 445); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "BytecodeIsJumpTarget(JSOp(*bytecodeSection().code(target.offset)))" ")"); do { MOZ_CrashSequence(__null, 445); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 446 | jump.patchAll(bytecodeSection().code(BytecodeOffset(0)), target); |
| 447 | } |
| 448 | |
| 449 | bool BytecodeEmitter::emitJumpTargetAndPatch(JumpList jump) { |
| 450 | if (!jump.offset.valid()) { |
| 451 | return true; |
| 452 | } |
| 453 | JumpTarget target; |
| 454 | if (!emitJumpTarget(&target)) { |
| 455 | return false; |
| 456 | } |
| 457 | patchJumpsToTarget(jump, target); |
| 458 | return true; |
| 459 | } |
| 460 | |
| 461 | bool BytecodeEmitter::emitCall(JSOp op, uint16_t argc, |
| 462 | const Maybe<uint32_t>& sourceCoordOffset) { |
| 463 | if (sourceCoordOffset.isSome()) { |
| 464 | if (!updateSourceCoordNotes(*sourceCoordOffset)) { |
| 465 | return false; |
| 466 | } |
| 467 | } |
| 468 | return emit3(op, ARGC_LO(argc), ARGC_HI(argc)); |
| 469 | } |
| 470 | |
| 471 | bool BytecodeEmitter::emitCall(JSOp op, uint16_t argc, ParseNode* pn) { |
| 472 | return emitCall(op, argc, pn ? Some(pn->pn_pos.begin) : Nothing()); |
| 473 | } |
| 474 | |
| 475 | bool BytecodeEmitter::emitDupAt(unsigned slotFromTop, unsigned count) { |
| 476 | MOZ_ASSERT(slotFromTop < unsigned(bytecodeSection().stackDepth()))do { static_assert( mozilla::detail::AssertionConditionType< decltype(slotFromTop < unsigned(bytecodeSection().stackDepth ()))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(slotFromTop < unsigned(bytecodeSection().stackDepth ())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("slotFromTop < unsigned(bytecodeSection().stackDepth())", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 476); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "slotFromTop < unsigned(bytecodeSection().stackDepth())" ")"); do { MOZ_CrashSequence(__null, 476); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 477 | MOZ_ASSERT(slotFromTop + 1 >= count)do { static_assert( mozilla::detail::AssertionConditionType< decltype(slotFromTop + 1 >= count)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(slotFromTop + 1 >= count) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("slotFromTop + 1 >= count" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 477); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "slotFromTop + 1 >= count" ")"); do { MOZ_CrashSequence (__null, 477); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 478 | |
| 479 | if (slotFromTop == 0 && count == 1) { |
| 480 | return emit1(JSOp::Dup); |
| 481 | } |
| 482 | |
| 483 | if (slotFromTop == 1 && count == 2) { |
| 484 | return emit1(JSOp::Dup2); |
| 485 | } |
| 486 | |
| 487 | if (slotFromTop >= Bit(24)) { |
| 488 | reportError(nullptr, JSMSG_TOO_MANY_LOCALS); |
| 489 | return false; |
| 490 | } |
| 491 | |
| 492 | for (unsigned i = 0; i < count; i++) { |
| 493 | BytecodeOffset off; |
| 494 | if (!emitN(JSOp::DupAt, 3, &off)) { |
| 495 | return false; |
| 496 | } |
| 497 | |
| 498 | jsbytecode* pc = bytecodeSection().code(off); |
| 499 | SET_UINT24(pc, slotFromTop); |
| 500 | } |
| 501 | |
| 502 | return true; |
| 503 | } |
| 504 | |
| 505 | bool BytecodeEmitter::emitPopN(unsigned n) { |
| 506 | MOZ_ASSERT(n != 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(n != 0)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(n != 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("n != 0", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 506); AnnotateMozCrashReason("MOZ_ASSERT" "(" "n != 0" ")") ; do { MOZ_CrashSequence(__null, 506); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 507 | |
| 508 | if (n == 1) { |
| 509 | return emit1(JSOp::Pop); |
| 510 | } |
| 511 | |
| 512 | // 2 JSOp::Pop instructions (2 bytes) are shorter than JSOp::PopN (3 bytes). |
| 513 | if (n == 2) { |
| 514 | return emit1(JSOp::Pop) && emit1(JSOp::Pop); |
| 515 | } |
| 516 | |
| 517 | // Emit multiple ops if there are many values to pop. |
| 518 | while (n > UINT16_MAX(65535)) { |
| 519 | if (!emitUint16Operand(JSOp::PopN, UINT16_MAX(65535))) { |
| 520 | return false; |
| 521 | } |
| 522 | n -= UINT16_MAX(65535); |
| 523 | } |
| 524 | return emitUint16Operand(JSOp::PopN, n); |
| 525 | } |
| 526 | |
| 527 | bool BytecodeEmitter::emitPickN(uint8_t n) { |
| 528 | MOZ_ASSERT(n != 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(n != 0)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(n != 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("n != 0", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 528); AnnotateMozCrashReason("MOZ_ASSERT" "(" "n != 0" ")") ; do { MOZ_CrashSequence(__null, 528); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 529 | |
| 530 | if (n == 1) { |
| 531 | return emit1(JSOp::Swap); |
| 532 | } |
| 533 | |
| 534 | return emit2(JSOp::Pick, n); |
| 535 | } |
| 536 | |
| 537 | bool BytecodeEmitter::emitUnpickN(uint8_t n) { |
| 538 | MOZ_ASSERT(n != 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(n != 0)>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(n != 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("n != 0", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 538); AnnotateMozCrashReason("MOZ_ASSERT" "(" "n != 0" ")") ; do { MOZ_CrashSequence(__null, 538); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 539 | |
| 540 | if (n == 1) { |
| 541 | return emit1(JSOp::Swap); |
| 542 | } |
| 543 | |
| 544 | return emit2(JSOp::Unpick, n); |
| 545 | } |
| 546 | |
| 547 | bool BytecodeEmitter::emitCheckIsObj(CheckIsObjectKind kind) { |
| 548 | return emit2(JSOp::CheckIsObj, uint8_t(kind)); |
| 549 | } |
| 550 | |
| 551 | bool BytecodeEmitter::emitBuiltinObject(BuiltinObjectKind kind) { |
| 552 | return emit2(JSOp::BuiltinObject, uint8_t(kind)); |
| 553 | } |
| 554 | |
| 555 | /* Updates line number notes, not column notes. */ |
| 556 | bool BytecodeEmitter::updateLineNumberNotes(uint32_t offset) { |
| 557 | if (skipLocationSrcNotes()) { |
| 558 | return true; |
| 559 | } |
| 560 | |
| 561 | const ErrorReporter& er = errorReporter(); |
| 562 | std::optional<bool> onThisLineStatus = |
| 563 | er.isOnThisLine(offset, bytecodeSection().currentLine()); |
| 564 | if (!onThisLineStatus.has_value()) { |
| 565 | er.errorNoOffset(JSMSG_OUT_OF_MEMORY); |
| 566 | return false; |
| 567 | } |
| 568 | |
| 569 | bool onThisLine = *onThisLineStatus; |
| 570 | |
| 571 | if (!onThisLine) { |
| 572 | unsigned line = er.lineAt(offset); |
| 573 | unsigned delta = line - bytecodeSection().currentLine(); |
| 574 | |
| 575 | // If we use a `SetLine` note below, we want it to be relative to the |
| 576 | // scripts initial line number for better chance of sharing. |
| 577 | unsigned initialLine = sc->extent().lineno; |
| 578 | MOZ_ASSERT(line >= initialLine)do { static_assert( mozilla::detail::AssertionConditionType< decltype(line >= initialLine)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(line >= initialLine))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("line >= initialLine" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 578); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "line >= initialLine" ")"); do { MOZ_CrashSequence (__null, 578); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 579 | |
| 580 | /* |
| 581 | * Encode any change in the current source line number by using |
| 582 | * either several SrcNoteType::NewLine notes or just one |
| 583 | * SrcNoteType::SetLine note, whichever consumes less space. |
| 584 | * |
| 585 | * NB: We handle backward line number deltas (possible with for |
| 586 | * loops where the update part is emitted after the body, but its |
| 587 | * line number is <= any line number in the body) here by letting |
| 588 | * unsigned delta_ wrap to a very large number, which triggers a |
| 589 | * SrcNoteType::SetLine. |
| 590 | */ |
| 591 | bytecodeSection().setCurrentLine(line, offset); |
| 592 | if (delta >= SrcNote::SetLine::lengthFor(line, initialLine)) { |
| 593 | if (!newSrcNote2(SrcNoteType::SetLine, |
| 594 | SrcNote::SetLine::toOperand(line, initialLine))) { |
| 595 | return false; |
| 596 | } |
| 597 | } else { |
| 598 | do { |
| 599 | if (!newSrcNote(SrcNoteType::NewLine)) { |
| 600 | return false; |
| 601 | } |
| 602 | } while (--delta != 0); |
| 603 | } |
| 604 | |
| 605 | bytecodeSection().updateSeparatorPositionIfPresent(); |
| 606 | } |
| 607 | return true; |
| 608 | } |
| 609 | |
| 610 | /* Updates the line number and column number information in the source notes. */ |
| 611 | bool BytecodeEmitter::updateSourceCoordNotes(uint32_t offset) { |
| 612 | if (skipLocationSrcNotes()) { |
| 613 | return true; |
| 614 | } |
| 615 | |
| 616 | if (!updateLineNumberNotes(offset)) { |
| 617 | return false; |
| 618 | } |
| 619 | |
| 620 | JS::LimitedColumnNumberOneOrigin columnIndex = |
| 621 | errorReporter().columnAt(offset); |
| 622 | |
| 623 | // Assert colspan is always representable. |
| 624 | static_assert((0 - ptrdiff_t(JS::LimitedColumnNumberOneOrigin::Limit)) >= |
| 625 | SrcNote::ColSpan::MinColSpan); |
| 626 | static_assert((ptrdiff_t(JS::LimitedColumnNumberOneOrigin::Limit) - 0) <= |
| 627 | SrcNote::ColSpan::MaxColSpan); |
| 628 | |
| 629 | JS::ColumnNumberOffset colspan = columnIndex - bytecodeSection().lastColumn(); |
| 630 | |
| 631 | if (colspan != JS::ColumnNumberOffset::zero()) { |
| 632 | if (lastLineOnlySrcNoteIndex != LastSrcNoteIsNotLineOnly) { |
| 633 | MOZ_ASSERT(bytecodeSection().lastColumn() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().lastColumn() == JS::LimitedColumnNumberOneOrigin ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(bytecodeSection().lastColumn() == JS::LimitedColumnNumberOneOrigin ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("bytecodeSection().lastColumn() == JS::LimitedColumnNumberOneOrigin()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 634); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "bytecodeSection().lastColumn() == JS::LimitedColumnNumberOneOrigin()" ")"); do { MOZ_CrashSequence(__null, 634); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 634 | JS::LimitedColumnNumberOneOrigin())do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().lastColumn() == JS::LimitedColumnNumberOneOrigin ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(bytecodeSection().lastColumn() == JS::LimitedColumnNumberOneOrigin ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("bytecodeSection().lastColumn() == JS::LimitedColumnNumberOneOrigin()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 634); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "bytecodeSection().lastColumn() == JS::LimitedColumnNumberOneOrigin()" ")"); do { MOZ_CrashSequence(__null, 634); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 635 | |
| 636 | const SrcNotesVector& notes = bytecodeSection().notes(); |
| 637 | SrcNoteType type = notes[lastLineOnlySrcNoteIndex].type(); |
| 638 | if (type == SrcNoteType::NewLine) { |
| 639 | if (!convertLastNewLineToNewLineColumn(columnIndex)) { |
| 640 | return false; |
| 641 | } |
| 642 | } else { |
| 643 | MOZ_ASSERT(type == SrcNoteType::SetLine)do { static_assert( mozilla::detail::AssertionConditionType< decltype(type == SrcNoteType::SetLine)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(type == SrcNoteType::SetLine ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "type == SrcNoteType::SetLine", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 643); AnnotateMozCrashReason("MOZ_ASSERT" "(" "type == SrcNoteType::SetLine" ")"); do { MOZ_CrashSequence(__null, 643); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 644 | if (!convertLastSetLineToSetLineColumn(columnIndex)) { |
| 645 | return false; |
| 646 | } |
| 647 | } |
| 648 | } else { |
| 649 | if (!newSrcNote2(SrcNoteType::ColSpan, |
| 650 | SrcNote::ColSpan::toOperand(colspan))) { |
| 651 | return false; |
| 652 | } |
| 653 | } |
| 654 | bytecodeSection().setLastColumn(columnIndex, offset); |
| 655 | bytecodeSection().updateSeparatorPositionIfPresent(); |
| 656 | } |
| 657 | return true; |
| 658 | } |
| 659 | |
| 660 | bool BytecodeEmitter::updateSourceCoordNotesIfNonLiteral(ParseNode* node) { |
| 661 | if (node->isLiteral()) { |
| 662 | return true; |
| 663 | } |
| 664 | return updateSourceCoordNotes(node->pn_pos.begin); |
| 665 | } |
| 666 | |
| 667 | uint32_t BytecodeEmitter::getOffsetForLoop(ParseNode* nextpn) const { |
| 668 | // Try to give the JSOp::LoopHead the same line number as the next |
| 669 | // instruction. nextpn is often a block, in which case the next instruction |
| 670 | // typically comes from the first statement inside. |
| 671 | if (nextpn->is<LexicalScopeNode>()) { |
| 672 | nextpn = nextpn->as<LexicalScopeNode>().scopeBody(); |
| 673 | } |
| 674 | if (nextpn->isKind(ParseNodeKind::StatementList)) { |
| 675 | if (ParseNode* firstStatement = nextpn->as<ListNode>().head()) { |
| 676 | nextpn = firstStatement; |
| 677 | } |
| 678 | } |
| 679 | |
| 680 | return nextpn->pn_pos.begin; |
| 681 | } |
| 682 | |
| 683 | bool BytecodeEmitter::emitUint16Operand(JSOp op, uint32_t operand) { |
| 684 | MOZ_ASSERT(operand <= UINT16_MAX)do { static_assert( mozilla::detail::AssertionConditionType< decltype(operand <= (65535))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(operand <= (65535)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("operand <= (65535)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 684); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "operand <= (65535)" ")"); do { MOZ_CrashSequence (__null, 684); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 685 | if (!emit3(op, UINT16_LO(operand), UINT16_HI(operand))) { |
| 686 | return false; |
| 687 | } |
| 688 | return true; |
| 689 | } |
| 690 | |
| 691 | bool BytecodeEmitter::emitUint32Operand(JSOp op, uint32_t operand) { |
| 692 | BytecodeOffset off; |
| 693 | if (!emitN(op, 4, &off)) { |
| 694 | return false; |
| 695 | } |
| 696 | SET_UINT32(bytecodeSection().code(off), operand); |
| 697 | return true; |
| 698 | } |
| 699 | |
| 700 | bool BytecodeEmitter::emitGoto(NestableControl* target, GotoKind kind) { |
| 701 | NonLocalExitControl nle(this, kind == GotoKind::Continue |
| 702 | ? NonLocalExitKind::Continue |
| 703 | : NonLocalExitKind::Break); |
| 704 | return nle.emitNonLocalJump(target); |
| 705 | } |
| 706 | |
| 707 | AbstractScopePtr BytecodeEmitter::innermostScope() const { |
| 708 | return innermostEmitterScope()->scope(this); |
| 709 | } |
| 710 | |
| 711 | ScopeIndex BytecodeEmitter::innermostScopeIndex() const { |
| 712 | return *innermostEmitterScope()->scopeIndex(this); |
| 713 | } |
| 714 | |
| 715 | bool BytecodeEmitter::emitGCIndexOp(JSOp op, GCThingIndex index) { |
| 716 | MOZ_ASSERT(checkStrictOrSloppy(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(checkStrictOrSloppy(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(checkStrictOrSloppy(op)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("checkStrictOrSloppy(op)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 716); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "checkStrictOrSloppy(op)" ")"); do { MOZ_CrashSequence (__null, 716); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 717 | |
| 718 | constexpr size_t OpLength = 1 + GCTHING_INDEX_LEN; |
| 719 | MOZ_ASSERT(GetOpLength(op) == OpLength)do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetOpLength(op) == OpLength)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(GetOpLength(op) == OpLength) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("GetOpLength(op) == OpLength" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 719); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "GetOpLength(op) == OpLength" ")"); do { MOZ_CrashSequence (__null, 719); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 720 | |
| 721 | BytecodeOffset offset; |
| 722 | if (!emitCheck(op, OpLength, &offset)) { |
| 723 | return false; |
| 724 | } |
| 725 | |
| 726 | jsbytecode* code = bytecodeSection().code(offset); |
| 727 | code[0] = jsbytecode(op); |
| 728 | SET_GCTHING_INDEX(code, index); |
| 729 | bytecodeSection().updateDepth(op, offset); |
| 730 | return true; |
| 731 | } |
| 732 | |
| 733 | bool BytecodeEmitter::emitAtomOp(JSOp op, TaggedParserAtomIndex atom) { |
| 734 | MOZ_ASSERT(atom)do { static_assert( mozilla::detail::AssertionConditionType< decltype(atom)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(atom))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("atom", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 734); AnnotateMozCrashReason("MOZ_ASSERT" "(" "atom" ")"); do { MOZ_CrashSequence(__null, 734); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 735 | |
| 736 | // .generator lookups should be emitted as JSOp::GetAliasedVar instead of |
| 737 | // JSOp::GetName etc, to bypass |with| objects on the scope chain. |
| 738 | // It's safe to emit .this lookups though because |with| objects skip |
| 739 | // those. |
| 740 | MOZ_ASSERT_IF(op == JSOp::GetName || op == JSOp::GetGName,do { if (op == JSOp::GetName || op == JSOp::GetGName) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(atom != TaggedParserAtomIndex::WellKnown::dot_generator_())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(atom != TaggedParserAtomIndex::WellKnown::dot_generator_() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "atom != TaggedParserAtomIndex::WellKnown::dot_generator_()", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 741); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "atom != TaggedParserAtomIndex::WellKnown::dot_generator_()" ")"); do { MOZ_CrashSequence(__null, 741); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 741 | atom != TaggedParserAtomIndex::WellKnown::dot_generator_())do { if (op == JSOp::GetName || op == JSOp::GetGName) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(atom != TaggedParserAtomIndex::WellKnown::dot_generator_())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(atom != TaggedParserAtomIndex::WellKnown::dot_generator_() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "atom != TaggedParserAtomIndex::WellKnown::dot_generator_()", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 741); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "atom != TaggedParserAtomIndex::WellKnown::dot_generator_()" ")"); do { MOZ_CrashSequence(__null, 741); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 742 | |
| 743 | GCThingIndex index; |
| 744 | if (!makeAtomIndex(atom, ParserAtom::Atomize::Yes, &index)) { |
| 745 | return false; |
| 746 | } |
| 747 | |
| 748 | return emitAtomOp(op, index); |
| 749 | } |
| 750 | |
| 751 | bool BytecodeEmitter::emitAtomOp(JSOp op, GCThingIndex atomIndex) { |
| 752 | MOZ_ASSERT(JOF_OPTYPE(op) == JOF_ATOM)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JOF_OPTYPE(op) == JOF_ATOM)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JOF_OPTYPE(op) == JOF_ATOM)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("JOF_OPTYPE(op) == JOF_ATOM" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 752); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "JOF_OPTYPE(op) == JOF_ATOM" ")"); do { MOZ_CrashSequence (__null, 752); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 753 | #ifdef DEBUG1 |
| 754 | auto atom = perScriptData().gcThingList().getAtom(atomIndex); |
| 755 | MOZ_ASSERT(compilationState.parserAtoms.isInstantiatedAsJSAtom(atom))do { static_assert( mozilla::detail::AssertionConditionType< decltype(compilationState.parserAtoms.isInstantiatedAsJSAtom( atom))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(compilationState.parserAtoms.isInstantiatedAsJSAtom( atom)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("compilationState.parserAtoms.isInstantiatedAsJSAtom(atom)", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 755); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "compilationState.parserAtoms.isInstantiatedAsJSAtom(atom)" ")"); do { MOZ_CrashSequence(__null, 755); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 756 | #endif |
| 757 | return emitGCIndexOp(op, atomIndex); |
| 758 | } |
| 759 | |
| 760 | bool BytecodeEmitter::emitStringOp(JSOp op, TaggedParserAtomIndex atom) { |
| 761 | MOZ_ASSERT(atom)do { static_assert( mozilla::detail::AssertionConditionType< decltype(atom)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(atom))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("atom", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 761); AnnotateMozCrashReason("MOZ_ASSERT" "(" "atom" ")"); do { MOZ_CrashSequence(__null, 761); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 762 | GCThingIndex index; |
| 763 | if (!makeAtomIndex(atom, ParserAtom::Atomize::No, &index)) { |
| 764 | return false; |
| 765 | } |
| 766 | |
| 767 | return emitStringOp(op, index); |
| 768 | } |
| 769 | |
| 770 | bool BytecodeEmitter::emitStringOp(JSOp op, GCThingIndex atomIndex) { |
| 771 | MOZ_ASSERT(JOF_OPTYPE(op) == JOF_STRING)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JOF_OPTYPE(op) == JOF_STRING)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JOF_OPTYPE(op) == JOF_STRING ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "JOF_OPTYPE(op) == JOF_STRING", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 771); AnnotateMozCrashReason("MOZ_ASSERT" "(" "JOF_OPTYPE(op) == JOF_STRING" ")"); do { MOZ_CrashSequence(__null, 771); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 772 | return emitGCIndexOp(op, atomIndex); |
| 773 | } |
| 774 | |
| 775 | bool BytecodeEmitter::emitInternedScopeOp(GCThingIndex index, JSOp op) { |
| 776 | MOZ_ASSERT(JOF_OPTYPE(op) == JOF_SCOPE)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JOF_OPTYPE(op) == JOF_SCOPE)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JOF_OPTYPE(op) == JOF_SCOPE) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("JOF_OPTYPE(op) == JOF_SCOPE" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 776); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "JOF_OPTYPE(op) == JOF_SCOPE" ")"); do { MOZ_CrashSequence (__null, 776); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 777 | MOZ_ASSERT(index < perScriptData().gcThingList().length())do { static_assert( mozilla::detail::AssertionConditionType< decltype(index < perScriptData().gcThingList().length())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(index < perScriptData().gcThingList().length()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("index < perScriptData().gcThingList().length()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 777); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "index < perScriptData().gcThingList().length()" ")"); do { MOZ_CrashSequence(__null, 777); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 778 | return emitGCIndexOp(op, index); |
| 779 | } |
| 780 | |
| 781 | bool BytecodeEmitter::emitInternedObjectOp(GCThingIndex index, JSOp op) { |
| 782 | MOZ_ASSERT(JOF_OPTYPE(op) == JOF_OBJECT)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JOF_OPTYPE(op) == JOF_OBJECT)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JOF_OPTYPE(op) == JOF_OBJECT ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "JOF_OPTYPE(op) == JOF_OBJECT", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 782); AnnotateMozCrashReason("MOZ_ASSERT" "(" "JOF_OPTYPE(op) == JOF_OBJECT" ")"); do { MOZ_CrashSequence(__null, 782); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 783 | MOZ_ASSERT(index < perScriptData().gcThingList().length())do { static_assert( mozilla::detail::AssertionConditionType< decltype(index < perScriptData().gcThingList().length())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(index < perScriptData().gcThingList().length()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("index < perScriptData().gcThingList().length()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 783); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "index < perScriptData().gcThingList().length()" ")"); do { MOZ_CrashSequence(__null, 783); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 784 | return emitGCIndexOp(op, index); |
| 785 | } |
| 786 | |
| 787 | bool BytecodeEmitter::emitRegExp(GCThingIndex index) { |
| 788 | return emitGCIndexOp(JSOp::RegExp, index); |
| 789 | } |
| 790 | |
| 791 | bool BytecodeEmitter::emitLocalOp(JSOp op, uint32_t slot) { |
| 792 | MOZ_ASSERT(JOF_OPTYPE(op) != JOF_ENVCOORD)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JOF_OPTYPE(op) != JOF_ENVCOORD)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JOF_OPTYPE(op) != JOF_ENVCOORD ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "JOF_OPTYPE(op) != JOF_ENVCOORD", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 792); AnnotateMozCrashReason("MOZ_ASSERT" "(" "JOF_OPTYPE(op) != JOF_ENVCOORD" ")"); do { MOZ_CrashSequence(__null, 792); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 793 | MOZ_ASSERT(IsLocalOp(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsLocalOp(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(IsLocalOp(op)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsLocalOp(op)", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 793); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "IsLocalOp(op)" ")"); do { MOZ_CrashSequence (__null, 793); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 794 | |
| 795 | BytecodeOffset off; |
| 796 | if (!emitN(op, LOCALNO_LEN, &off)) { |
| 797 | return false; |
| 798 | } |
| 799 | |
| 800 | SET_LOCALNO(bytecodeSection().code(off), slot); |
| 801 | return true; |
| 802 | } |
| 803 | |
| 804 | bool BytecodeEmitter::emitArgOp(JSOp op, uint16_t slot) { |
| 805 | MOZ_ASSERT(IsArgOp(op))do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsArgOp(op))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(IsArgOp(op)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsArgOp(op)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 805); AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsArgOp(op)" ")"); do { MOZ_CrashSequence(__null, 805); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 806 | BytecodeOffset off; |
| 807 | if (!emitN(op, ARGNO_LEN, &off)) { |
| 808 | return false; |
| 809 | } |
| 810 | |
| 811 | SET_ARGNO(bytecodeSection().code(off), slot); |
| 812 | return true; |
| 813 | } |
| 814 | |
| 815 | bool BytecodeEmitter::emitEnvCoordOp(JSOp op, EnvironmentCoordinate ec) { |
| 816 | MOZ_ASSERT(JOF_OPTYPE(op) == JOF_ENVCOORD ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(JOF_OPTYPE(op) == JOF_ENVCOORD || JOF_OPTYPE(op) == JOF_DEBUGCOORD )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(JOF_OPTYPE(op) == JOF_ENVCOORD || JOF_OPTYPE(op) == JOF_DEBUGCOORD ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "JOF_OPTYPE(op) == JOF_ENVCOORD || JOF_OPTYPE(op) == JOF_DEBUGCOORD" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 817); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "JOF_OPTYPE(op) == JOF_ENVCOORD || JOF_OPTYPE(op) == JOF_DEBUGCOORD" ")"); do { MOZ_CrashSequence(__null, 817); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 817 | JOF_OPTYPE(op) == JOF_DEBUGCOORD)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JOF_OPTYPE(op) == JOF_ENVCOORD || JOF_OPTYPE(op) == JOF_DEBUGCOORD )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(JOF_OPTYPE(op) == JOF_ENVCOORD || JOF_OPTYPE(op) == JOF_DEBUGCOORD ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "JOF_OPTYPE(op) == JOF_ENVCOORD || JOF_OPTYPE(op) == JOF_DEBUGCOORD" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 817); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "JOF_OPTYPE(op) == JOF_ENVCOORD || JOF_OPTYPE(op) == JOF_DEBUGCOORD" ")"); do { MOZ_CrashSequence(__null, 817); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 818 | |
| 819 | constexpr size_t N = ENVCOORD_HOPS_LEN + ENVCOORD_SLOT_LEN; |
| 820 | MOZ_ASSERT(GetOpLength(op) == 1 + N)do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetOpLength(op) == 1 + N)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(GetOpLength(op) == 1 + N))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("GetOpLength(op) == 1 + N" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 820); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "GetOpLength(op) == 1 + N" ")"); do { MOZ_CrashSequence (__null, 820); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 821 | |
| 822 | BytecodeOffset off; |
| 823 | if (!emitN(op, N, &off)) { |
| 824 | return false; |
| 825 | } |
| 826 | |
| 827 | jsbytecode* pc = bytecodeSection().code(off); |
| 828 | SET_ENVCOORD_HOPS(pc, ec.hops()); |
| 829 | pc += ENVCOORD_HOPS_LEN; |
| 830 | SET_ENVCOORD_SLOT(pc, ec.slot()); |
| 831 | pc += ENVCOORD_SLOT_LEN; |
Value stored to 'pc' is never read | |
| 832 | return true; |
| 833 | } |
| 834 | |
| 835 | bool BytecodeEmitter::checkSideEffects(ParseNode* pn, bool* answer) const { |
| 836 | AutoCheckRecursionLimit recursion(fc); |
| 837 | if (!recursion.check(fc)) { |
| 838 | return false; |
| 839 | } |
| 840 | |
| 841 | restart: |
| 842 | |
| 843 | switch (pn->getKind()) { |
| 844 | // Trivial cases with no side effects. |
| 845 | case ParseNodeKind::EmptyStmt: |
| 846 | case ParseNodeKind::TrueExpr: |
| 847 | case ParseNodeKind::FalseExpr: |
| 848 | case ParseNodeKind::NullExpr: |
| 849 | case ParseNodeKind::RawUndefinedExpr: |
| 850 | case ParseNodeKind::Elision: |
| 851 | case ParseNodeKind::Generator: |
| 852 | MOZ_ASSERT(pn->is<NullaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<NullaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<NullaryNode> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<NullaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 852); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<NullaryNode>()" ")"); do { MOZ_CrashSequence(__null, 852); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 853 | *answer = false; |
| 854 | return true; |
| 855 | |
| 856 | case ParseNodeKind::ObjectPropertyName: |
| 857 | case ParseNodeKind::PrivateName: // no side effects, unlike |
| 858 | // ParseNodeKind::Name |
| 859 | case ParseNodeKind::StringExpr: |
| 860 | case ParseNodeKind::TemplateStringExpr: |
| 861 | MOZ_ASSERT(pn->is<NameNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<NameNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<NameNode>()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->is<NameNode>()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 861); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "pn->is<NameNode>()" ")"); do { MOZ_CrashSequence (__null, 861); __attribute__((nomerge)) ::abort(); } while (false ); } } while (false); |
| 862 | *answer = false; |
| 863 | return true; |
| 864 | |
| 865 | case ParseNodeKind::RegExpExpr: |
| 866 | MOZ_ASSERT(pn->is<RegExpLiteral>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<RegExpLiteral>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<RegExpLiteral> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<RegExpLiteral>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 866); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<RegExpLiteral>()" ")"); do { MOZ_CrashSequence(__null, 866); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 867 | *answer = false; |
| 868 | return true; |
| 869 | |
| 870 | case ParseNodeKind::NumberExpr: |
| 871 | MOZ_ASSERT(pn->is<NumericLiteral>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<NumericLiteral>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<NumericLiteral> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<NumericLiteral>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 871); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<NumericLiteral>()" ")"); do { MOZ_CrashSequence(__null, 871); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 872 | *answer = false; |
| 873 | return true; |
| 874 | |
| 875 | case ParseNodeKind::BigIntExpr: |
| 876 | MOZ_ASSERT(pn->is<BigIntLiteral>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BigIntLiteral>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BigIntLiteral> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BigIntLiteral>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 876); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BigIntLiteral>()" ")"); do { MOZ_CrashSequence(__null, 876); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 877 | *answer = false; |
| 878 | return true; |
| 879 | |
| 880 | // |this| can throw in derived class constructors, including nested arrow |
| 881 | // functions or eval. |
| 882 | case ParseNodeKind::ThisExpr: |
| 883 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 883); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 883); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 884 | *answer = sc->needsThisTDZChecks(); |
| 885 | return true; |
| 886 | |
| 887 | // |new.target| doesn't have any side-effects. |
| 888 | case ParseNodeKind::NewTargetExpr: { |
| 889 | MOZ_ASSERT(pn->is<NewTargetNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<NewTargetNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<NewTargetNode> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<NewTargetNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 889); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<NewTargetNode>()" ")"); do { MOZ_CrashSequence(__null, 889); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 890 | *answer = false; |
| 891 | return true; |
| 892 | } |
| 893 | |
| 894 | // Trivial binary nodes with more token pos holders. |
| 895 | case ParseNodeKind::ImportMetaExpr: { |
| 896 | MOZ_ASSERT(pn->as<BinaryNode>().left()->isKind(ParseNodeKind::PosHolder))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->as<BinaryNode>().left()->isKind(ParseNodeKind ::PosHolder))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(pn->as<BinaryNode>().left ()->isKind(ParseNodeKind::PosHolder)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->as<BinaryNode>().left()->isKind(ParseNodeKind::PosHolder)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 896); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "pn->as<BinaryNode>().left()->isKind(ParseNodeKind::PosHolder)" ")"); do { MOZ_CrashSequence(__null, 896); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 897 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->as<BinaryNode>().right()->isKind(ParseNodeKind ::PosHolder))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(pn->as<BinaryNode>().right ()->isKind(ParseNodeKind::PosHolder)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->as<BinaryNode>().right()->isKind(ParseNodeKind::PosHolder)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 898); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "pn->as<BinaryNode>().right()->isKind(ParseNodeKind::PosHolder)" ")"); do { MOZ_CrashSequence(__null, 898); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 898 | pn->as<BinaryNode>().right()->isKind(ParseNodeKind::PosHolder))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->as<BinaryNode>().right()->isKind(ParseNodeKind ::PosHolder))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(pn->as<BinaryNode>().right ()->isKind(ParseNodeKind::PosHolder)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->as<BinaryNode>().right()->isKind(ParseNodeKind::PosHolder)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 898); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "pn->as<BinaryNode>().right()->isKind(ParseNodeKind::PosHolder)" ")"); do { MOZ_CrashSequence(__null, 898); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 899 | *answer = false; |
| 900 | return true; |
| 901 | } |
| 902 | |
| 903 | case ParseNodeKind::BreakStmt: |
| 904 | MOZ_ASSERT(pn->is<BreakStatement>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BreakStatement>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BreakStatement> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BreakStatement>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 904); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BreakStatement>()" ")"); do { MOZ_CrashSequence(__null, 904); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 905 | *answer = true; |
| 906 | return true; |
| 907 | |
| 908 | case ParseNodeKind::ContinueStmt: |
| 909 | MOZ_ASSERT(pn->is<ContinueStatement>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<ContinueStatement>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<ContinueStatement >()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<ContinueStatement>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 909); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<ContinueStatement>()" ")"); do { MOZ_CrashSequence(__null, 909); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 910 | *answer = true; |
| 911 | return true; |
| 912 | |
| 913 | case ParseNodeKind::DebuggerStmt: |
| 914 | MOZ_ASSERT(pn->is<DebuggerStatement>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<DebuggerStatement>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<DebuggerStatement >()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<DebuggerStatement>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 914); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<DebuggerStatement>()" ")"); do { MOZ_CrashSequence(__null, 914); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 915 | *answer = true; |
| 916 | return true; |
| 917 | |
| 918 | // Watch out for getters! |
| 919 | case ParseNodeKind::OptionalDotExpr: |
| 920 | case ParseNodeKind::DotExpr: |
| 921 | case ParseNodeKind::ArgumentsLength: |
| 922 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 922); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 922); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 923 | *answer = true; |
| 924 | return true; |
| 925 | |
| 926 | // Unary cases with side effects only if the child has them. |
| 927 | case ParseNodeKind::TypeOfExpr: |
| 928 | case ParseNodeKind::VoidExpr: |
| 929 | case ParseNodeKind::NotExpr: |
| 930 | return checkSideEffects(pn->as<UnaryNode>().kid(), answer); |
| 931 | |
| 932 | // Even if the name expression is effect-free, performing ToPropertyKey on |
| 933 | // it might not be effect-free: |
| 934 | // |
| 935 | // RegExp.prototype.toString = () => { throw 42; }; |
| 936 | // ({ [/regex/]: 0 }); // ToPropertyKey(/regex/) throws 42 |
| 937 | // |
| 938 | // function Q() { |
| 939 | // ({ [new.target]: 0 }); |
| 940 | // } |
| 941 | // Q.toString = () => { throw 17; }; |
| 942 | // new Q; // new.target will be Q, ToPropertyKey(Q) throws 17 |
| 943 | case ParseNodeKind::ComputedName: |
| 944 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 944); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 944); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 945 | *answer = true; |
| 946 | return true; |
| 947 | |
| 948 | // Looking up or evaluating the associated name could throw. |
| 949 | case ParseNodeKind::TypeOfNameExpr: |
| 950 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 950); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 950); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 951 | *answer = true; |
| 952 | return true; |
| 953 | |
| 954 | // This unary case has side effects on the enclosing object, sure. But |
| 955 | // that's not the question this function answers: it's whether the |
| 956 | // operation may have a side effect on something *other* than the result |
| 957 | // of the overall operation in which it's embedded. The answer to that |
| 958 | // is no, because an object literal having a mutated prototype only |
| 959 | // produces a value, without affecting anything else. |
| 960 | case ParseNodeKind::MutateProto: |
| 961 | return checkSideEffects(pn->as<UnaryNode>().kid(), answer); |
| 962 | |
| 963 | // Unary cases with obvious side effects. |
| 964 | case ParseNodeKind::PreIncrementExpr: |
| 965 | case ParseNodeKind::PostIncrementExpr: |
| 966 | case ParseNodeKind::PreDecrementExpr: |
| 967 | case ParseNodeKind::PostDecrementExpr: |
| 968 | case ParseNodeKind::ThrowStmt: |
| 969 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 969); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 969); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 970 | *answer = true; |
| 971 | return true; |
| 972 | |
| 973 | // These might invoke valueOf/toString, even with a subexpression without |
| 974 | // side effects! Consider |+{ valueOf: null, toString: null }|. |
| 975 | case ParseNodeKind::BitNotExpr: |
| 976 | case ParseNodeKind::PosExpr: |
| 977 | case ParseNodeKind::NegExpr: |
| 978 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 978); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 978); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 979 | *answer = true; |
| 980 | return true; |
| 981 | |
| 982 | // This invokes the (user-controllable) iterator protocol. |
| 983 | case ParseNodeKind::Spread: |
| 984 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 984); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 984); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 985 | *answer = true; |
| 986 | return true; |
| 987 | |
| 988 | case ParseNodeKind::InitialYield: |
| 989 | case ParseNodeKind::YieldStarExpr: |
| 990 | case ParseNodeKind::YieldExpr: |
| 991 | case ParseNodeKind::AwaitExpr: |
| 992 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 992); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 992); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 993 | *answer = true; |
| 994 | return true; |
| 995 | |
| 996 | // Deletion generally has side effects, even if isolated cases have none. |
| 997 | case ParseNodeKind::DeleteNameExpr: |
| 998 | case ParseNodeKind::DeletePropExpr: |
| 999 | case ParseNodeKind::DeleteElemExpr: |
| 1000 | case ParseNodeKind::DeleteOptionalChainExpr: |
| 1001 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1001); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1001); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1002 | *answer = true; |
| 1003 | return true; |
| 1004 | |
| 1005 | // Deletion of a non-Reference expression has side effects only through |
| 1006 | // evaluating the expression. |
| 1007 | case ParseNodeKind::DeleteExpr: { |
| 1008 | ParseNode* expr = pn->as<UnaryNode>().kid(); |
| 1009 | return checkSideEffects(expr, answer); |
| 1010 | } |
| 1011 | |
| 1012 | case ParseNodeKind::ExpressionStmt: |
| 1013 | return checkSideEffects(pn->as<UnaryNode>().kid(), answer); |
| 1014 | |
| 1015 | // Binary cases with obvious side effects. |
| 1016 | case ParseNodeKind::InitExpr: |
| 1017 | *answer = true; |
| 1018 | return true; |
| 1019 | |
| 1020 | case ParseNodeKind::AssignExpr: |
| 1021 | case ParseNodeKind::AddAssignExpr: |
| 1022 | case ParseNodeKind::SubAssignExpr: |
| 1023 | case ParseNodeKind::CoalesceAssignExpr: |
| 1024 | case ParseNodeKind::OrAssignExpr: |
| 1025 | case ParseNodeKind::AndAssignExpr: |
| 1026 | case ParseNodeKind::BitOrAssignExpr: |
| 1027 | case ParseNodeKind::BitXorAssignExpr: |
| 1028 | case ParseNodeKind::BitAndAssignExpr: |
| 1029 | case ParseNodeKind::LshAssignExpr: |
| 1030 | case ParseNodeKind::RshAssignExpr: |
| 1031 | case ParseNodeKind::UrshAssignExpr: |
| 1032 | case ParseNodeKind::MulAssignExpr: |
| 1033 | case ParseNodeKind::DivAssignExpr: |
| 1034 | case ParseNodeKind::ModAssignExpr: |
| 1035 | case ParseNodeKind::PowAssignExpr: |
| 1036 | MOZ_ASSERT(pn->is<AssignmentNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<AssignmentNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<AssignmentNode> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<AssignmentNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1036); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<AssignmentNode>()" ")"); do { MOZ_CrashSequence(__null, 1036); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1037 | *answer = true; |
| 1038 | return true; |
| 1039 | |
| 1040 | case ParseNodeKind::SetThis: |
| 1041 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1041); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1041); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1042 | *answer = true; |
| 1043 | return true; |
| 1044 | |
| 1045 | case ParseNodeKind::StatementList: |
| 1046 | // Strict equality operations and short circuit operators are well-behaved |
| 1047 | // and perform no conversions. |
| 1048 | case ParseNodeKind::CoalesceExpr: |
| 1049 | case ParseNodeKind::OrExpr: |
| 1050 | case ParseNodeKind::AndExpr: |
| 1051 | case ParseNodeKind::StrictEqExpr: |
| 1052 | case ParseNodeKind::StrictNeExpr: |
| 1053 | // Any subexpression of a comma expression could be effectful. |
| 1054 | case ParseNodeKind::CommaExpr: |
| 1055 | MOZ_ASSERT(!pn->as<ListNode>().empty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!pn->as<ListNode>().empty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!pn->as<ListNode>() .empty()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!pn->as<ListNode>().empty()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1055); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!pn->as<ListNode>().empty()" ")"); do { MOZ_CrashSequence(__null, 1055); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1056 | [[fallthrough]]; |
| 1057 | // Subcomponents of a literal may be effectful. |
| 1058 | case ParseNodeKind::ArrayExpr: |
| 1059 | case ParseNodeKind::ObjectExpr: |
| 1060 | for (ParseNode* item : pn->as<ListNode>().contents()) { |
| 1061 | if (!checkSideEffects(item, answer)) { |
| 1062 | return false; |
| 1063 | } |
| 1064 | if (*answer) { |
| 1065 | return true; |
| 1066 | } |
| 1067 | } |
| 1068 | return true; |
| 1069 | |
| 1070 | #ifdef ENABLE_DECORATORS |
| 1071 | case ParseNodeKind::DecoratorList: |
| 1072 | MOZ_CRASH("Decorators are not supported yet")do { do { } while (false); MOZ_ReportCrash("" "Decorators are not supported yet" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1072); AnnotateMozCrashReason("MOZ_CRASH(" "Decorators are not supported yet" ")"); do { MOZ_CrashSequence(__null, 1072); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 1073 | #endif |
| 1074 | |
| 1075 | case ParseNodeKind::UsingDecl: |
| 1076 | case ParseNodeKind::AwaitUsingDecl: |
| 1077 | MOZ_CRASH("Using declarations are not supported yet")do { do { } while (false); MOZ_ReportCrash("" "Using declarations are not supported yet" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1077); AnnotateMozCrashReason("MOZ_CRASH(" "Using declarations are not supported yet" ")"); do { MOZ_CrashSequence(__null, 1077); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 1078 | |
| 1079 | // Most other binary operations (parsed as lists in SpiderMonkey) may |
| 1080 | // perform conversions triggering side effects. Math operations perform |
| 1081 | // ToNumber and may fail invoking invalid user-defined toString/valueOf: |
| 1082 | // |5 < { toString: null }|. |instanceof| throws if provided a |
| 1083 | // non-object constructor: |null instanceof null|. |in| throws if given |
| 1084 | // a non-object RHS: |5 in null|. |
| 1085 | case ParseNodeKind::BitOrExpr: |
| 1086 | case ParseNodeKind::BitXorExpr: |
| 1087 | case ParseNodeKind::BitAndExpr: |
| 1088 | case ParseNodeKind::EqExpr: |
| 1089 | case ParseNodeKind::NeExpr: |
| 1090 | case ParseNodeKind::LtExpr: |
| 1091 | case ParseNodeKind::LeExpr: |
| 1092 | case ParseNodeKind::GtExpr: |
| 1093 | case ParseNodeKind::GeExpr: |
| 1094 | case ParseNodeKind::InstanceOfExpr: |
| 1095 | case ParseNodeKind::InExpr: |
| 1096 | case ParseNodeKind::PrivateInExpr: |
| 1097 | case ParseNodeKind::LshExpr: |
| 1098 | case ParseNodeKind::RshExpr: |
| 1099 | case ParseNodeKind::UrshExpr: |
| 1100 | case ParseNodeKind::AddExpr: |
| 1101 | case ParseNodeKind::SubExpr: |
| 1102 | case ParseNodeKind::MulExpr: |
| 1103 | case ParseNodeKind::DivExpr: |
| 1104 | case ParseNodeKind::ModExpr: |
| 1105 | case ParseNodeKind::PowExpr: |
| 1106 | MOZ_ASSERT(pn->as<ListNode>().count() >= 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->as<ListNode>().count() >= 2)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(pn->as<ListNode>().count() >= 2))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->as<ListNode>().count() >= 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1106); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->as<ListNode>().count() >= 2" ")"); do { MOZ_CrashSequence(__null, 1106); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1107 | *answer = true; |
| 1108 | return true; |
| 1109 | |
| 1110 | case ParseNodeKind::PropertyDefinition: |
| 1111 | case ParseNodeKind::Case: { |
| 1112 | BinaryNode* node = &pn->as<BinaryNode>(); |
| 1113 | if (!checkSideEffects(node->left(), answer)) { |
| 1114 | return false; |
| 1115 | } |
| 1116 | if (*answer) { |
| 1117 | return true; |
| 1118 | } |
| 1119 | return checkSideEffects(node->right(), answer); |
| 1120 | } |
| 1121 | |
| 1122 | // More getters. |
| 1123 | case ParseNodeKind::ElemExpr: |
| 1124 | case ParseNodeKind::OptionalElemExpr: |
| 1125 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1125); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1125); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1126 | *answer = true; |
| 1127 | return true; |
| 1128 | |
| 1129 | // Throws if the operand is not of the right class. Can also call a private |
| 1130 | // getter. |
| 1131 | case ParseNodeKind::PrivateMemberExpr: |
| 1132 | case ParseNodeKind::OptionalPrivateMemberExpr: |
| 1133 | *answer = true; |
| 1134 | return true; |
| 1135 | |
| 1136 | // These affect visible names in this code, or in other code. |
| 1137 | case ParseNodeKind::ImportDecl: |
| 1138 | case ParseNodeKind::ExportFromStmt: |
| 1139 | case ParseNodeKind::ExportDefaultStmt: |
| 1140 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1140); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1140); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1141 | *answer = true; |
| 1142 | return true; |
| 1143 | |
| 1144 | // Likewise. |
| 1145 | case ParseNodeKind::ExportStmt: |
| 1146 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1146); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1146); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1147 | *answer = true; |
| 1148 | return true; |
| 1149 | |
| 1150 | case ParseNodeKind::CallImportExpr: |
| 1151 | case ParseNodeKind::CallImportSpec: |
| 1152 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1152); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1152); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1153 | *answer = true; |
| 1154 | return true; |
| 1155 | |
| 1156 | // Every part of a loop might be effect-free, but looping infinitely *is* |
| 1157 | // an effect. (Language lawyer trivia: C++ says threads can be assumed |
| 1158 | // to exit or have side effects, C++14 [intro.multithread]p27, so a C++ |
| 1159 | // implementation's equivalent of the below could set |*answer = false;| |
| 1160 | // if all loop sub-nodes set |*answer = false|!) |
| 1161 | case ParseNodeKind::DoWhileStmt: |
| 1162 | case ParseNodeKind::WhileStmt: |
| 1163 | case ParseNodeKind::ForStmt: |
| 1164 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1164); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1164); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1165 | *answer = true; |
| 1166 | return true; |
| 1167 | |
| 1168 | // Declarations affect the name set of the relevant scope. |
| 1169 | case ParseNodeKind::VarStmt: |
| 1170 | case ParseNodeKind::ConstDecl: |
| 1171 | case ParseNodeKind::LetDecl: |
| 1172 | MOZ_ASSERT(pn->is<ListNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<ListNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<ListNode>()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->is<ListNode>()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1172); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<ListNode>()" ")"); do { MOZ_CrashSequence(__null, 1172); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1173 | *answer = true; |
| 1174 | return true; |
| 1175 | |
| 1176 | case ParseNodeKind::IfStmt: |
| 1177 | case ParseNodeKind::ConditionalExpr: { |
| 1178 | TernaryNode* node = &pn->as<TernaryNode>(); |
| 1179 | if (!checkSideEffects(node->kid1(), answer)) { |
| 1180 | return false; |
| 1181 | } |
| 1182 | if (*answer) { |
| 1183 | return true; |
| 1184 | } |
| 1185 | if (!checkSideEffects(node->kid2(), answer)) { |
| 1186 | return false; |
| 1187 | } |
| 1188 | if (*answer) { |
| 1189 | return true; |
| 1190 | } |
| 1191 | if ((pn = node->kid3())) { |
| 1192 | goto restart; |
| 1193 | } |
| 1194 | return true; |
| 1195 | } |
| 1196 | |
| 1197 | // Function calls can invoke non-local code. |
| 1198 | case ParseNodeKind::NewExpr: |
| 1199 | case ParseNodeKind::CallExpr: |
| 1200 | case ParseNodeKind::OptionalCallExpr: |
| 1201 | case ParseNodeKind::TaggedTemplateExpr: |
| 1202 | case ParseNodeKind::SuperCallExpr: |
| 1203 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1203); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1203); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1204 | *answer = true; |
| 1205 | return true; |
| 1206 | |
| 1207 | // Function arg lists can contain arbitrary expressions. Technically |
| 1208 | // this only causes side-effects if one of the arguments does, but since |
| 1209 | // the call being made will always trigger side-effects, it isn't needed. |
| 1210 | case ParseNodeKind::Arguments: |
| 1211 | MOZ_ASSERT(pn->is<ListNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<ListNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<ListNode>()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->is<ListNode>()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1211); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<ListNode>()" ")"); do { MOZ_CrashSequence(__null, 1211); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1212 | *answer = true; |
| 1213 | return true; |
| 1214 | |
| 1215 | case ParseNodeKind::OptionalChain: |
| 1216 | MOZ_ASSERT(pn->is<UnaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<UnaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<UnaryNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<UnaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1216); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<UnaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1216); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1217 | *answer = true; |
| 1218 | return true; |
| 1219 | |
| 1220 | // Classes typically introduce names. Even if no name is introduced, |
| 1221 | // the heritage and/or class body (through computed property names) |
| 1222 | // usually have effects. |
| 1223 | case ParseNodeKind::ClassDecl: |
| 1224 | MOZ_ASSERT(pn->is<ClassNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<ClassNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<ClassNode>() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pn->is<ClassNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1224); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<ClassNode>()" ")"); do { MOZ_CrashSequence(__null, 1224); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1225 | *answer = true; |
| 1226 | return true; |
| 1227 | |
| 1228 | // |with| calls |ToObject| on its expression and so throws if that value |
| 1229 | // is null/undefined. |
| 1230 | case ParseNodeKind::WithStmt: |
| 1231 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1231); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1231); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1232 | *answer = true; |
| 1233 | return true; |
| 1234 | |
| 1235 | case ParseNodeKind::ReturnStmt: |
| 1236 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1236); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1236); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1237 | *answer = true; |
| 1238 | return true; |
| 1239 | |
| 1240 | case ParseNodeKind::Name: |
| 1241 | MOZ_ASSERT(pn->is<NameNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<NameNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<NameNode>()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->is<NameNode>()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1241); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<NameNode>()" ")"); do { MOZ_CrashSequence(__null, 1241); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1242 | *answer = true; |
| 1243 | return true; |
| 1244 | |
| 1245 | // Shorthands could trigger getters: the |x| in the object literal in |
| 1246 | // |with ({ get x() { throw 42; } }) ({ x });|, for example, triggers |
| 1247 | // one. (Of course, it isn't necessary to use |with| for a shorthand to |
| 1248 | // trigger a getter.) |
| 1249 | case ParseNodeKind::Shorthand: |
| 1250 | MOZ_ASSERT(pn->is<BinaryNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<BinaryNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<BinaryNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<BinaryNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1250); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<BinaryNode>()" ")"); do { MOZ_CrashSequence(__null, 1250); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1251 | *answer = true; |
| 1252 | return true; |
| 1253 | |
| 1254 | case ParseNodeKind::Function: |
| 1255 | MOZ_ASSERT(pn->is<FunctionNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->is<FunctionNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->is<FunctionNode> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->is<FunctionNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1255); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->is<FunctionNode>()" ")"); do { MOZ_CrashSequence(__null, 1255); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1256 | /* |
| 1257 | * A named function, contrary to ES3, is no longer effectful, because |
| 1258 | * we bind its name lexically (using JSOp::Callee) instead of creating |
| 1259 | * an Object instance and binding a readonly, permanent property in it |
| 1260 | * (the object and binding can be detected and hijacked or captured). |
| 1261 | * This is a bug fix to ES3; it is fixed in ES3.1 drafts. |
| 1262 | */ |
| 1263 | *answer = false; |
| 1264 | return true; |
| 1265 | |
| 1266 | case ParseNodeKind::Module: |
| 1267 | *answer = false; |
| 1268 | return true; |
| 1269 | |
| 1270 | case ParseNodeKind::TryStmt: { |
| 1271 | TryNode* tryNode = &pn->as<TryNode>(); |
| 1272 | if (!checkSideEffects(tryNode->body(), answer)) { |
| 1273 | return false; |
| 1274 | } |
| 1275 | if (*answer) { |
| 1276 | return true; |
| 1277 | } |
| 1278 | if (LexicalScopeNode* catchScope = tryNode->catchScope()) { |
| 1279 | if (!checkSideEffects(catchScope, answer)) { |
| 1280 | return false; |
| 1281 | } |
| 1282 | if (*answer) { |
| 1283 | return true; |
| 1284 | } |
| 1285 | } |
| 1286 | if (ParseNode* finallyBlock = tryNode->finallyBlock()) { |
| 1287 | if (!checkSideEffects(finallyBlock, answer)) { |
| 1288 | return false; |
| 1289 | } |
| 1290 | } |
| 1291 | return true; |
| 1292 | } |
| 1293 | |
| 1294 | case ParseNodeKind::Catch: { |
| 1295 | BinaryNode* catchClause = &pn->as<BinaryNode>(); |
| 1296 | if (ParseNode* name = catchClause->left()) { |
| 1297 | if (!checkSideEffects(name, answer)) { |
| 1298 | return false; |
| 1299 | } |
| 1300 | if (*answer) { |
| 1301 | return true; |
| 1302 | } |
| 1303 | } |
| 1304 | return checkSideEffects(catchClause->right(), answer); |
| 1305 | } |
| 1306 | |
| 1307 | case ParseNodeKind::SwitchStmt: { |
| 1308 | SwitchStatement* switchStmt = &pn->as<SwitchStatement>(); |
| 1309 | if (!checkSideEffects(&switchStmt->discriminant(), answer)) { |
| 1310 | return false; |
| 1311 | } |
| 1312 | return *answer || |
| 1313 | checkSideEffects(&switchStmt->lexicalForCaseList(), answer); |
| 1314 | } |
| 1315 | |
| 1316 | case ParseNodeKind::LabelStmt: |
| 1317 | return checkSideEffects(pn->as<LabeledStatement>().statement(), answer); |
| 1318 | |
| 1319 | case ParseNodeKind::LexicalScope: |
| 1320 | return checkSideEffects(pn->as<LexicalScopeNode>().scopeBody(), answer); |
| 1321 | |
| 1322 | // We could methodically check every interpolated expression, but it's |
| 1323 | // probably not worth the trouble. Treat template strings as effect-free |
| 1324 | // only if they don't contain any substitutions. |
| 1325 | case ParseNodeKind::TemplateStringListExpr: { |
| 1326 | ListNode* list = &pn->as<ListNode>(); |
| 1327 | MOZ_ASSERT(!list->empty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!list->empty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!list->empty()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!list->empty()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1327); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!list->empty()" ")" ); do { MOZ_CrashSequence(__null, 1327); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1328 | MOZ_ASSERT((list->count() % 2) == 1,do { static_assert( mozilla::detail::AssertionConditionType< decltype((list->count() % 2) == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!((list->count() % 2) == 1) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("(list->count() % 2) == 1" " (" "template strings must alternate template and substitution " "parts" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1330); AnnotateMozCrashReason("MOZ_ASSERT" "(" "(list->count() % 2) == 1" ") (" "template strings must alternate template and substitution " "parts" ")"); do { MOZ_CrashSequence(__null, 1330); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 1329 | "template strings must alternate template and substitution "do { static_assert( mozilla::detail::AssertionConditionType< decltype((list->count() % 2) == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!((list->count() % 2) == 1) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("(list->count() % 2) == 1" " (" "template strings must alternate template and substitution " "parts" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1330); AnnotateMozCrashReason("MOZ_ASSERT" "(" "(list->count() % 2) == 1" ") (" "template strings must alternate template and substitution " "parts" ")"); do { MOZ_CrashSequence(__null, 1330); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 1330 | "parts")do { static_assert( mozilla::detail::AssertionConditionType< decltype((list->count() % 2) == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!((list->count() % 2) == 1) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("(list->count() % 2) == 1" " (" "template strings must alternate template and substitution " "parts" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1330); AnnotateMozCrashReason("MOZ_ASSERT" "(" "(list->count() % 2) == 1" ") (" "template strings must alternate template and substitution " "parts" ")"); do { MOZ_CrashSequence(__null, 1330); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false); |
| 1331 | *answer = list->count() > 1; |
| 1332 | return true; |
| 1333 | } |
| 1334 | |
| 1335 | // This should be unreachable but is left as-is for now. |
| 1336 | case ParseNodeKind::ParamsBody: |
| 1337 | *answer = true; |
| 1338 | return true; |
| 1339 | |
| 1340 | case ParseNodeKind::ForIn: // by ParseNodeKind::For |
| 1341 | case ParseNodeKind::ForOf: // by ParseNodeKind::For |
| 1342 | case ParseNodeKind::ForHead: // by ParseNodeKind::For |
| 1343 | case ParseNodeKind::DefaultConstructor: // by ParseNodeKind::ClassDecl |
| 1344 | case ParseNodeKind::ClassBodyScope: // by ParseNodeKind::ClassDecl |
| 1345 | case ParseNodeKind::ClassMethod: // by ParseNodeKind::ClassDecl |
| 1346 | case ParseNodeKind::ClassField: // by ParseNodeKind::ClassDecl |
| 1347 | case ParseNodeKind::ClassNames: // by ParseNodeKind::ClassDecl |
| 1348 | case ParseNodeKind::StaticClassBlock: // by ParseNodeKind::ClassDecl |
| 1349 | case ParseNodeKind::ClassMemberList: // by ParseNodeKind::ClassDecl |
| 1350 | case ParseNodeKind::ImportSpecList: // by ParseNodeKind::Import |
| 1351 | case ParseNodeKind::ImportSpec: // by ParseNodeKind::Import |
| 1352 | case ParseNodeKind::ImportNamespaceSpec: // by ParseNodeKind::Import |
| 1353 | case ParseNodeKind::ImportAttribute: // by ParseNodeKind::Import |
| 1354 | case ParseNodeKind::ImportAttributeList: // by ParseNodeKind::Import |
| 1355 | case ParseNodeKind::ImportModuleRequest: // by ParseNodeKind::Import |
| 1356 | case ParseNodeKind::ExportBatchSpecStmt: // by ParseNodeKind::Export |
| 1357 | case ParseNodeKind::ExportSpecList: // by ParseNodeKind::Export |
| 1358 | case ParseNodeKind::ExportSpec: // by ParseNodeKind::Export |
| 1359 | case ParseNodeKind::ExportNamespaceSpec: // by ParseNodeKind::Export |
| 1360 | case ParseNodeKind::CallSiteObj: // by ParseNodeKind::TaggedTemplate |
| 1361 | case ParseNodeKind::PosHolder: // by ParseNodeKind::NewTarget |
| 1362 | case ParseNodeKind::SuperBase: // by ParseNodeKind::Elem and others |
| 1363 | case ParseNodeKind::PropertyNameExpr: // by ParseNodeKind::Dot |
| 1364 | MOZ_CRASH("handled by parent nodes")do { do { } while (false); MOZ_ReportCrash("" "handled by parent nodes" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1364); AnnotateMozCrashReason("MOZ_CRASH(" "handled by parent nodes" ")"); do { MOZ_CrashSequence(__null, 1364); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 1365 | |
| 1366 | case ParseNodeKind::LastUnused: |
| 1367 | case ParseNodeKind::Limit: |
| 1368 | MOZ_CRASH("invalid node kind")do { do { } while (false); MOZ_ReportCrash("" "invalid node kind" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1368); AnnotateMozCrashReason("MOZ_CRASH(" "invalid node kind" ")") ; do { MOZ_CrashSequence(__null, 1368); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 1369 | } |
| 1370 | |
| 1371 | MOZ_CRASH(do { do { } while (false); MOZ_ReportCrash("" "invalid, unenumerated ParseNodeKind value encountered in " "BytecodeEmitter::checkSideEffects", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1373); AnnotateMozCrashReason("MOZ_CRASH(" "invalid, unenumerated ParseNodeKind value encountered in " "BytecodeEmitter::checkSideEffects" ")"); do { MOZ_CrashSequence (__null, 1373); __attribute__((nomerge)) ::abort(); } while ( false); } while (false) |
| 1372 | "invalid, unenumerated ParseNodeKind value encountered in "do { do { } while (false); MOZ_ReportCrash("" "invalid, unenumerated ParseNodeKind value encountered in " "BytecodeEmitter::checkSideEffects", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1373); AnnotateMozCrashReason("MOZ_CRASH(" "invalid, unenumerated ParseNodeKind value encountered in " "BytecodeEmitter::checkSideEffects" ")"); do { MOZ_CrashSequence (__null, 1373); __attribute__((nomerge)) ::abort(); } while ( false); } while (false) |
| 1373 | "BytecodeEmitter::checkSideEffects")do { do { } while (false); MOZ_ReportCrash("" "invalid, unenumerated ParseNodeKind value encountered in " "BytecodeEmitter::checkSideEffects", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1373); AnnotateMozCrashReason("MOZ_CRASH(" "invalid, unenumerated ParseNodeKind value encountered in " "BytecodeEmitter::checkSideEffects" ")"); do { MOZ_CrashSequence (__null, 1373); __attribute__((nomerge)) ::abort(); } while ( false); } while (false); |
| 1374 | } |
| 1375 | |
| 1376 | bool BytecodeEmitter::isInLoop() const { |
| 1377 | return findInnermostNestableControl<LoopControl>(); |
| 1378 | } |
| 1379 | |
| 1380 | bool BytecodeEmitter::checkSingletonContext() const { |
| 1381 | MOZ_ASSERT_IF(sc->treatAsRunOnce(), sc->isTopLevelContext())do { if (sc->treatAsRunOnce()) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(sc->isTopLevelContext ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(sc->isTopLevelContext()))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("sc->isTopLevelContext()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1381); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isTopLevelContext()" ")"); do { MOZ_CrashSequence(__null, 1381); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 1382 | return sc->treatAsRunOnce() && !isInLoop(); |
| 1383 | } |
| 1384 | |
| 1385 | bool BytecodeEmitter::needsImplicitThis() const { |
| 1386 | // Short-circuit if there is an enclosing 'with' scope. |
| 1387 | if (sc->inWith()) { |
| 1388 | return true; |
| 1389 | } |
| 1390 | |
| 1391 | // Otherwise see if the current point is under a 'with'. |
| 1392 | for (EmitterScope* es = innermostEmitterScope(); es; |
| 1393 | es = es->enclosingInFrame()) { |
| 1394 | if (es->scope(this).kind() == ScopeKind::With) { |
| 1395 | return true; |
| 1396 | } |
| 1397 | } |
| 1398 | |
| 1399 | return false; |
| 1400 | } |
| 1401 | |
| 1402 | size_t BytecodeEmitter::countThisEnvironmentHops() const { |
| 1403 | unsigned numHops = 0; |
| 1404 | |
| 1405 | for (const auto* current = this; current; current = current->parent) { |
| 1406 | for (EmitterScope* es = current->innermostEmitterScope(); es; |
| 1407 | es = es->enclosingInFrame()) { |
| 1408 | if (es->scope(current).is<FunctionScope>()) { |
| 1409 | if (!es->scope(current).isArrow()) { |
| 1410 | // The Parser is responsible for marking the environment as either |
| 1411 | // closed-over or used-by-eval which ensure that is must exist. |
| 1412 | MOZ_ASSERT(es->scope(current).hasEnvironment())do { static_assert( mozilla::detail::AssertionConditionType< decltype(es->scope(current).hasEnvironment())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(es->scope(current).hasEnvironment()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("es->scope(current).hasEnvironment()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1412); AnnotateMozCrashReason("MOZ_ASSERT" "(" "es->scope(current).hasEnvironment()" ")"); do { MOZ_CrashSequence(__null, 1412); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1413 | return numHops; |
| 1414 | } |
| 1415 | } |
| 1416 | if (es->scope(current).hasEnvironment()) { |
| 1417 | numHops++; |
| 1418 | } |
| 1419 | } |
| 1420 | } |
| 1421 | |
| 1422 | // The "this" environment exists outside of the compilation, but the |
| 1423 | // `ScopeContext` recorded the number of additional hops needed, so add |
| 1424 | // those in now. |
| 1425 | MOZ_ASSERT(sc->allowSuperProperty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->allowSuperProperty())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->allowSuperProperty()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->allowSuperProperty()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1425); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->allowSuperProperty()" ")"); do { MOZ_CrashSequence(__null, 1425); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1426 | numHops += compilationState.scopeContext.enclosingThisEnvironmentHops; |
| 1427 | return numHops; |
| 1428 | } |
| 1429 | |
| 1430 | bool BytecodeEmitter::emitThisEnvironmentCallee() { |
| 1431 | // Get the innermost enclosing function that has a |this| binding. |
| 1432 | |
| 1433 | // Directly load callee from the frame if possible. |
| 1434 | if (sc->isFunctionBox() && !sc->asFunctionBox()->isArrow()) { |
| 1435 | return emit1(JSOp::Callee); |
| 1436 | } |
| 1437 | |
| 1438 | // We have to load the callee from the environment chain. |
| 1439 | size_t numHops = countThisEnvironmentHops(); |
| 1440 | |
| 1441 | static_assert( |
| 1442 | ENVCOORD_HOPS_LIMIT - 1 <= UINT16_MAX(65535), |
| 1443 | "JSOp::EnvCallee operand size should match ENVCOORD_HOPS_LIMIT"); |
| 1444 | |
| 1445 | MOZ_ASSERT(numHops < ENVCOORD_HOPS_LIMIT - 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(numHops < ENVCOORD_HOPS_LIMIT - 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(numHops < ENVCOORD_HOPS_LIMIT - 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("numHops < ENVCOORD_HOPS_LIMIT - 1", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1445); AnnotateMozCrashReason("MOZ_ASSERT" "(" "numHops < ENVCOORD_HOPS_LIMIT - 1" ")"); do { MOZ_CrashSequence(__null, 1445); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1446 | |
| 1447 | return emitUint16Operand(JSOp::EnvCallee, numHops); |
| 1448 | } |
| 1449 | |
| 1450 | bool BytecodeEmitter::emitSuperBase() { |
| 1451 | if (!emitThisEnvironmentCallee()) { |
| 1452 | return false; |
| 1453 | } |
| 1454 | |
| 1455 | return emit1(JSOp::SuperBase); |
| 1456 | } |
| 1457 | |
| 1458 | void BytecodeEmitter::reportError(ParseNode* pn, unsigned errorNumber, |
| 1459 | ...) const { |
| 1460 | uint32_t offset = pn ? pn->pn_pos.begin : *scriptStartOffset; |
| 1461 | |
| 1462 | va_list args; |
| 1463 | va_start(args, errorNumber)__builtin_va_start(args, errorNumber); |
| 1464 | |
| 1465 | errorReporter().errorWithNotesAtVA(nullptr, AsVariant(offset), errorNumber, |
| 1466 | &args); |
| 1467 | |
| 1468 | va_end(args)__builtin_va_end(args); |
| 1469 | } |
| 1470 | |
| 1471 | void BytecodeEmitter::reportError(uint32_t offset, unsigned errorNumber, |
| 1472 | ...) const { |
| 1473 | va_list args; |
| 1474 | va_start(args, errorNumber)__builtin_va_start(args, errorNumber); |
| 1475 | |
| 1476 | errorReporter().errorWithNotesAtVA(nullptr, AsVariant(offset), errorNumber, |
| 1477 | &args); |
| 1478 | |
| 1479 | va_end(args)__builtin_va_end(args); |
| 1480 | } |
| 1481 | |
| 1482 | bool BytecodeEmitter::addObjLiteralData(ObjLiteralWriter& writer, |
| 1483 | GCThingIndex* outIndex) { |
| 1484 | if (!writer.checkForDuplicatedNames(fc)) { |
| 1485 | return false; |
| 1486 | } |
| 1487 | |
| 1488 | size_t len = writer.getCode().size(); |
| 1489 | auto* code = compilationState.alloc.newArrayUninitialized<uint8_t>(len); |
| 1490 | if (!code) { |
| 1491 | js::ReportOutOfMemory(fc); |
| 1492 | return false; |
| 1493 | } |
| 1494 | memcpy(code, writer.getCode().data(), len); |
| 1495 | |
| 1496 | ObjLiteralIndex objIndex(compilationState.objLiteralData.length()); |
| 1497 | if (uint32_t(objIndex) >= TaggedScriptThingIndex::IndexLimit) { |
| 1498 | ReportAllocationOverflow(fc); |
| 1499 | return false; |
| 1500 | } |
| 1501 | if (!compilationState.objLiteralData.emplaceBack(code, len, writer.getKind(), |
| 1502 | writer.getFlags(), |
| 1503 | writer.getPropertyCount())) { |
| 1504 | js::ReportOutOfMemory(fc); |
| 1505 | return false; |
| 1506 | } |
| 1507 | |
| 1508 | return perScriptData().gcThingList().append(objIndex, outIndex); |
| 1509 | } |
| 1510 | |
| 1511 | bool BytecodeEmitter::emitPrepareIteratorResult() { |
| 1512 | constexpr JSOp op = JSOp::NewObject; |
| 1513 | |
| 1514 | ObjLiteralWriter writer; |
| 1515 | writer.beginShape(op); |
| 1516 | |
| 1517 | writer.setPropNameNoDuplicateCheck(parserAtoms(), |
| 1518 | TaggedParserAtomIndex::WellKnown::value()); |
| 1519 | if (!writer.propWithUndefinedValue(fc)) { |
| 1520 | return false; |
| 1521 | } |
| 1522 | writer.setPropNameNoDuplicateCheck(parserAtoms(), |
| 1523 | TaggedParserAtomIndex::WellKnown::done()); |
| 1524 | if (!writer.propWithUndefinedValue(fc)) { |
| 1525 | return false; |
| 1526 | } |
| 1527 | |
| 1528 | GCThingIndex shape; |
| 1529 | if (!addObjLiteralData(writer, &shape)) { |
| 1530 | return false; |
| 1531 | } |
| 1532 | |
| 1533 | return emitGCIndexOp(op, shape); |
| 1534 | } |
| 1535 | |
| 1536 | bool BytecodeEmitter::emitFinishIteratorResult(bool done) { |
| 1537 | if (!emitAtomOp(JSOp::InitProp, TaggedParserAtomIndex::WellKnown::value())) { |
| 1538 | return false; |
| 1539 | } |
| 1540 | if (!emit1(done ? JSOp::True : JSOp::False)) { |
| 1541 | return false; |
| 1542 | } |
| 1543 | if (!emitAtomOp(JSOp::InitProp, TaggedParserAtomIndex::WellKnown::done())) { |
| 1544 | return false; |
| 1545 | } |
| 1546 | return true; |
| 1547 | } |
| 1548 | |
| 1549 | bool BytecodeEmitter::emitGetNameAtLocation(TaggedParserAtomIndex name, |
| 1550 | const NameLocation& loc) { |
| 1551 | NameOpEmitter noe(this, name, loc, NameOpEmitter::Kind::Get); |
| 1552 | if (!noe.emitGet()) { |
| 1553 | return false; |
| 1554 | } |
| 1555 | |
| 1556 | return true; |
| 1557 | } |
| 1558 | |
| 1559 | bool BytecodeEmitter::emitGetName(NameNode* name) { |
| 1560 | MOZ_ASSERT(name->isKind(ParseNodeKind::Name))do { static_assert( mozilla::detail::AssertionConditionType< decltype(name->isKind(ParseNodeKind::Name))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(name->isKind(ParseNodeKind ::Name)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("name->isKind(ParseNodeKind::Name)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1560); AnnotateMozCrashReason("MOZ_ASSERT" "(" "name->isKind(ParseNodeKind::Name)" ")"); do { MOZ_CrashSequence(__null, 1560); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1561 | |
| 1562 | return emitGetName(name->name()); |
| 1563 | } |
| 1564 | |
| 1565 | bool BytecodeEmitter::emitGetPrivateName(NameNode* name) { |
| 1566 | MOZ_ASSERT(name->isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(name->isKind(ParseNodeKind::PrivateName))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(name->isKind(ParseNodeKind::PrivateName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("name->isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1566); AnnotateMozCrashReason("MOZ_ASSERT" "(" "name->isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 1566); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1567 | return emitGetPrivateName(name->name()); |
| 1568 | } |
| 1569 | |
| 1570 | bool BytecodeEmitter::emitGetPrivateName(TaggedParserAtomIndex nameAtom) { |
| 1571 | // The parser ensures the private name is present on the environment chain, |
| 1572 | // but its location can be Dynamic or Global when emitting debugger |
| 1573 | // eval-in-frame code. |
| 1574 | NameLocation location = lookupName(nameAtom); |
| 1575 | MOZ_ASSERT(location.kind() == NameLocation::Kind::FrameSlot ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(location.kind() == NameLocation::Kind::FrameSlot || location .kind() == NameLocation::Kind::EnvironmentCoordinate || location .kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation ::Kind::Global)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(location.kind() == NameLocation ::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location .kind() == NameLocation::Kind::Global))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("location.kind() == NameLocation::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation::Kind::Global" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1578); AnnotateMozCrashReason("MOZ_ASSERT" "(" "location.kind() == NameLocation::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation::Kind::Global" ")"); do { MOZ_CrashSequence(__null, 1578); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1576 | location.kind() == NameLocation::Kind::EnvironmentCoordinate ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(location.kind() == NameLocation::Kind::FrameSlot || location .kind() == NameLocation::Kind::EnvironmentCoordinate || location .kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation ::Kind::Global)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(location.kind() == NameLocation ::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location .kind() == NameLocation::Kind::Global))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("location.kind() == NameLocation::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation::Kind::Global" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1578); AnnotateMozCrashReason("MOZ_ASSERT" "(" "location.kind() == NameLocation::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation::Kind::Global" ")"); do { MOZ_CrashSequence(__null, 1578); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1577 | location.kind() == NameLocation::Kind::Dynamic ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(location.kind() == NameLocation::Kind::FrameSlot || location .kind() == NameLocation::Kind::EnvironmentCoordinate || location .kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation ::Kind::Global)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(location.kind() == NameLocation ::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location .kind() == NameLocation::Kind::Global))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("location.kind() == NameLocation::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation::Kind::Global" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1578); AnnotateMozCrashReason("MOZ_ASSERT" "(" "location.kind() == NameLocation::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation::Kind::Global" ")"); do { MOZ_CrashSequence(__null, 1578); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1578 | location.kind() == NameLocation::Kind::Global)do { static_assert( mozilla::detail::AssertionConditionType< decltype(location.kind() == NameLocation::Kind::FrameSlot || location .kind() == NameLocation::Kind::EnvironmentCoordinate || location .kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation ::Kind::Global)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(location.kind() == NameLocation ::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location .kind() == NameLocation::Kind::Global))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("location.kind() == NameLocation::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation::Kind::Global" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1578); AnnotateMozCrashReason("MOZ_ASSERT" "(" "location.kind() == NameLocation::Kind::FrameSlot || location.kind() == NameLocation::Kind::EnvironmentCoordinate || location.kind() == NameLocation::Kind::Dynamic || location.kind() == NameLocation::Kind::Global" ")"); do { MOZ_CrashSequence(__null, 1578); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1579 | |
| 1580 | return emitGetNameAtLocation(nameAtom, location); |
| 1581 | } |
| 1582 | |
| 1583 | bool BytecodeEmitter::emitTDZCheckIfNeeded(TaggedParserAtomIndex name, |
| 1584 | const NameLocation& loc, |
| 1585 | ValueIsOnStack isOnStack) { |
| 1586 | // Dynamic accesses have TDZ checks built into their VM code and should |
| 1587 | // never emit explicit TDZ checks. |
| 1588 | MOZ_ASSERT(loc.hasKnownSlot())do { static_assert( mozilla::detail::AssertionConditionType< decltype(loc.hasKnownSlot())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(loc.hasKnownSlot()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("loc.hasKnownSlot()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1588); AnnotateMozCrashReason("MOZ_ASSERT" "(" "loc.hasKnownSlot()" ")"); do { MOZ_CrashSequence(__null, 1588); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1589 | MOZ_ASSERT(loc.isLexical() || loc.isPrivateMethod() || loc.isSynthetic())do { static_assert( mozilla::detail::AssertionConditionType< decltype(loc.isLexical() || loc.isPrivateMethod() || loc.isSynthetic ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(loc.isLexical() || loc.isPrivateMethod() || loc.isSynthetic ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("loc.isLexical() || loc.isPrivateMethod() || loc.isSynthetic()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1589); AnnotateMozCrashReason("MOZ_ASSERT" "(" "loc.isLexical() || loc.isPrivateMethod() || loc.isSynthetic()" ")"); do { MOZ_CrashSequence(__null, 1589); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1590 | |
| 1591 | // Private names are implemented as lexical bindings, but it's just an |
| 1592 | // implementation detail. Per spec there's no TDZ check when using them. |
| 1593 | if (parserAtoms().isPrivateName(name)) { |
| 1594 | return true; |
| 1595 | } |
| 1596 | |
| 1597 | // `.initializers` is an implementation detail that is always populated |
| 1598 | // before a constructor can read it. |
| 1599 | if (name == TaggedParserAtomIndex::WellKnown::dot_initializers_()) { |
| 1600 | return true; |
| 1601 | } |
| 1602 | |
| 1603 | Maybe<MaybeCheckTDZ> check = |
| 1604 | innermostTDZCheckCache->needsTDZCheck(this, name); |
| 1605 | if (!check) { |
| 1606 | return false; |
| 1607 | } |
| 1608 | |
| 1609 | // We've already emitted a check in this basic block. |
| 1610 | if (*check == DontCheckTDZ) { |
| 1611 | return true; |
| 1612 | } |
| 1613 | |
| 1614 | // If the value is not on the stack, we have to load it first. |
| 1615 | if (isOnStack == ValueIsOnStack::No) { |
| 1616 | if (loc.kind() == NameLocation::Kind::FrameSlot) { |
| 1617 | if (!emitLocalOp(JSOp::GetLocal, loc.frameSlot())) { |
| 1618 | return false; |
| 1619 | } |
| 1620 | } else { |
| 1621 | if (!emitEnvCoordOp(JSOp::GetAliasedVar, loc.environmentCoordinate())) { |
| 1622 | return false; |
| 1623 | } |
| 1624 | } |
| 1625 | } |
| 1626 | |
| 1627 | // Emit the lexical check. |
| 1628 | if (loc.kind() == NameLocation::Kind::FrameSlot) { |
| 1629 | if (!emitLocalOp(JSOp::CheckLexical, loc.frameSlot())) { |
| 1630 | return false; |
| 1631 | } |
| 1632 | } else { |
| 1633 | if (!emitEnvCoordOp(JSOp::CheckAliasedLexical, |
| 1634 | loc.environmentCoordinate())) { |
| 1635 | return false; |
| 1636 | } |
| 1637 | } |
| 1638 | |
| 1639 | // Pop the value if needed. |
| 1640 | if (isOnStack == ValueIsOnStack::No) { |
| 1641 | if (!emit1(JSOp::Pop)) { |
| 1642 | return false; |
| 1643 | } |
| 1644 | } |
| 1645 | |
| 1646 | return innermostTDZCheckCache->noteTDZCheck(this, name, DontCheckTDZ); |
| 1647 | } |
| 1648 | |
| 1649 | bool BytecodeEmitter::emitPropLHS(NonOptionalPropertyAccessBase* prop) { |
| 1650 | MOZ_ASSERT(!prop->isSuper())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!prop->isSuper())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!prop->isSuper()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!prop->isSuper()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1650); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!prop->isSuper()" ")"); do { MOZ_CrashSequence(__null, 1650); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1651 | |
| 1652 | ParseNode* expr = &prop->expression(); |
| 1653 | |
| 1654 | // Not all non-optional property accesses can be flattened (e.g. super.x or |
| 1655 | // arguments.length); use emitTree for those instead. |
| 1656 | if (!expr->is<PropertyAccess>() || expr->as<PropertyAccess>().isSuper()) { |
| 1657 | return emitTree(expr); |
| 1658 | } |
| 1659 | |
| 1660 | // If the object operand is also a dotted property reference, reverse the |
| 1661 | // list linked via expression() temporarily so we can iterate over it from |
| 1662 | // the bottom up (reversing again as we go), to avoid excessive recursion. |
| 1663 | PropertyAccess* pndot = &expr->as<PropertyAccess>(); |
| 1664 | ParseNode* pnup = nullptr; |
| 1665 | ParseNode* pndown; |
| 1666 | for (;;) { |
| 1667 | // Reverse pndot->expression() to point up, not down. |
| 1668 | pndown = &pndot->expression(); |
| 1669 | pndot->setExpression(pnup); |
| 1670 | if (!pndown->is<PropertyAccess>() || |
| 1671 | pndown->as<PropertyAccess>().isSuper()) { |
| 1672 | break; |
| 1673 | } |
| 1674 | pnup = pndot; |
| 1675 | pndot = &pndown->as<PropertyAccess>(); |
| 1676 | } |
| 1677 | |
| 1678 | // pndown is a primary expression, not a dotted property reference. |
| 1679 | if (!emitTree(pndown)) { |
| 1680 | return false; |
| 1681 | } |
| 1682 | |
| 1683 | while (true) { |
| 1684 | // Walk back up the list, emitting annotated name ops. |
| 1685 | if (!emitAtomOp(JSOp::GetProp, pndot->key().atom())) { |
| 1686 | return false; |
| 1687 | } |
| 1688 | |
| 1689 | // Reverse the pndot->expression() link again. |
| 1690 | pnup = pndot->maybeExpression(); |
| 1691 | pndot->setExpression(pndown); |
| 1692 | pndown = pndot; |
| 1693 | if (!pnup) { |
| 1694 | break; |
| 1695 | } |
| 1696 | pndot = &pnup->as<PropertyAccess>(); |
| 1697 | } |
| 1698 | return true; |
| 1699 | } |
| 1700 | |
| 1701 | bool BytecodeEmitter::emitArgumentsLength() { |
| 1702 | if (sc->isFunctionBox() && |
| 1703 | sc->asFunctionBox()->isEligibleForArgumentsLength() && |
| 1704 | !sc->asFunctionBox()->needsArgsObj()) { |
| 1705 | return emit1(JSOp::ArgumentsLength); |
| 1706 | } |
| 1707 | |
| 1708 | PropOpEmitter poe(this, PropOpEmitter::Kind::Get, |
| 1709 | PropOpEmitter::ObjKind::Other); |
| 1710 | if (!poe.prepareForObj()) { |
| 1711 | return false; |
| 1712 | } |
| 1713 | |
| 1714 | NameOpEmitter noe(this, TaggedParserAtomIndex::WellKnown::arguments(), |
| 1715 | NameOpEmitter::Kind::Get); |
| 1716 | if (!noe.emitGet()) { |
| 1717 | return false; |
| 1718 | } |
| 1719 | return poe.emitGet(TaggedParserAtomIndex::WellKnown::length()); |
| 1720 | } |
| 1721 | |
| 1722 | bool BytecodeEmitter::emitPropIncDec(UnaryNode* incDec, ValueUsage valueUsage) { |
| 1723 | NonOptionalPropertyAccessBase* prop = |
| 1724 | &incDec->kid()->as<NonOptionalPropertyAccessBase>(); |
| 1725 | bool isSuper = prop->isSuper(); |
| 1726 | ParseNodeKind kind = incDec->getKind(); |
| 1727 | PropOpEmitter poe( |
| 1728 | this, |
| 1729 | kind == ParseNodeKind::PostIncrementExpr |
| 1730 | ? PropOpEmitter::Kind::PostIncrement |
| 1731 | : kind == ParseNodeKind::PreIncrementExpr |
| 1732 | ? PropOpEmitter::Kind::PreIncrement |
| 1733 | : kind == ParseNodeKind::PostDecrementExpr |
| 1734 | ? PropOpEmitter::Kind::PostDecrement |
| 1735 | : PropOpEmitter::Kind::PreDecrement, |
| 1736 | isSuper ? PropOpEmitter::ObjKind::Super : PropOpEmitter::ObjKind::Other); |
| 1737 | if (!poe.prepareForObj()) { |
| 1738 | return false; |
| 1739 | } |
| 1740 | if (isSuper) { |
| 1741 | UnaryNode* base = &prop->expression().as<UnaryNode>(); |
| 1742 | if (!emitGetThisForSuperBase(base)) { |
| 1743 | // [stack] THIS |
| 1744 | return false; |
| 1745 | } |
| 1746 | } else { |
| 1747 | if (!emitPropLHS(prop)) { |
| 1748 | // [stack] OBJ |
| 1749 | return false; |
| 1750 | } |
| 1751 | } |
| 1752 | if (!poe.emitIncDec(prop->key().atom(), valueUsage)) { |
| 1753 | // [stack] RESULT |
| 1754 | return false; |
| 1755 | } |
| 1756 | |
| 1757 | return true; |
| 1758 | } |
| 1759 | |
| 1760 | bool BytecodeEmitter::emitNameIncDec(UnaryNode* incDec, ValueUsage valueUsage) { |
| 1761 | MOZ_ASSERT(incDec->kid()->isKind(ParseNodeKind::Name))do { static_assert( mozilla::detail::AssertionConditionType< decltype(incDec->kid()->isKind(ParseNodeKind::Name))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(incDec->kid()->isKind(ParseNodeKind::Name)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("incDec->kid()->isKind(ParseNodeKind::Name)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1761); AnnotateMozCrashReason("MOZ_ASSERT" "(" "incDec->kid()->isKind(ParseNodeKind::Name)" ")"); do { MOZ_CrashSequence(__null, 1761); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1762 | |
| 1763 | ParseNodeKind kind = incDec->getKind(); |
| 1764 | NameNode* name = &incDec->kid()->as<NameNode>(); |
| 1765 | NameOpEmitter noe(this, name->atom(), |
| 1766 | kind == ParseNodeKind::PostIncrementExpr |
| 1767 | ? NameOpEmitter::Kind::PostIncrement |
| 1768 | : kind == ParseNodeKind::PreIncrementExpr |
| 1769 | ? NameOpEmitter::Kind::PreIncrement |
| 1770 | : kind == ParseNodeKind::PostDecrementExpr |
| 1771 | ? NameOpEmitter::Kind::PostDecrement |
| 1772 | : NameOpEmitter::Kind::PreDecrement); |
| 1773 | if (!noe.emitIncDec(valueUsage)) { |
| 1774 | return false; |
| 1775 | } |
| 1776 | |
| 1777 | return true; |
| 1778 | } |
| 1779 | |
| 1780 | bool BytecodeEmitter::emitElemObjAndKey(PropertyByValue* elem, |
| 1781 | ElemOpEmitter& eoe) { |
| 1782 | ParseNode* exprOrSuper = &elem->expression(); |
| 1783 | ParseNode* key = &elem->key(); |
| 1784 | |
| 1785 | if (!eoe.prepareForObj()) { |
| 1786 | // [stack] |
| 1787 | return false; |
| 1788 | } |
| 1789 | |
| 1790 | if (elem->isSuper()) { |
| 1791 | auto* base = &exprOrSuper->as<UnaryNode>(); |
| 1792 | if (!emitGetThisForSuperBase(base)) { |
| 1793 | // [stack] THIS |
| 1794 | return false; |
| 1795 | } |
| 1796 | } else { |
| 1797 | if (!emitTree(exprOrSuper)) { |
| 1798 | // [stack] OBJ |
| 1799 | return false; |
| 1800 | } |
| 1801 | } |
| 1802 | |
| 1803 | if (!eoe.prepareForKey()) { |
| 1804 | // [stack] # if Super |
| 1805 | // [stack] THIS? THIS |
| 1806 | // [stack] # otherwise |
| 1807 | // [stack] OBJ? OBJ |
| 1808 | return false; |
| 1809 | } |
| 1810 | |
| 1811 | if (!emitTree(key)) { |
| 1812 | // [stack] # if Super |
| 1813 | // [stack] THIS? THIS KEY |
| 1814 | // [stack] # otherwise |
| 1815 | // [stack] OBJ? OBJ KEY |
| 1816 | return false; |
| 1817 | } |
| 1818 | |
| 1819 | return true; |
| 1820 | } |
| 1821 | |
| 1822 | bool BytecodeEmitter::emitElemOpBase(JSOp op) { |
| 1823 | if (!emit1(op)) { |
| 1824 | return false; |
| 1825 | } |
| 1826 | |
| 1827 | return true; |
| 1828 | } |
| 1829 | |
| 1830 | static ElemOpEmitter::Kind ConvertIncDecKind(ParseNodeKind kind) { |
| 1831 | switch (kind) { |
| 1832 | case ParseNodeKind::PostIncrementExpr: |
| 1833 | return ElemOpEmitter::Kind::PostIncrement; |
| 1834 | case ParseNodeKind::PreIncrementExpr: |
| 1835 | return ElemOpEmitter::Kind::PreIncrement; |
| 1836 | case ParseNodeKind::PostDecrementExpr: |
| 1837 | return ElemOpEmitter::Kind::PostDecrement; |
| 1838 | case ParseNodeKind::PreDecrementExpr: |
| 1839 | return ElemOpEmitter::Kind::PreDecrement; |
| 1840 | default: |
| 1841 | MOZ_CRASH("unexpected inc/dec node kind")do { do { } while (false); MOZ_ReportCrash("" "unexpected inc/dec node kind" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1841); AnnotateMozCrashReason("MOZ_CRASH(" "unexpected inc/dec node kind" ")"); do { MOZ_CrashSequence(__null, 1841); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 1842 | } |
| 1843 | } |
| 1844 | |
| 1845 | static PrivateOpEmitter::Kind PrivateConvertIncDecKind(ParseNodeKind kind) { |
| 1846 | switch (kind) { |
| 1847 | case ParseNodeKind::PostIncrementExpr: |
| 1848 | return PrivateOpEmitter::Kind::PostIncrement; |
| 1849 | case ParseNodeKind::PreIncrementExpr: |
| 1850 | return PrivateOpEmitter::Kind::PreIncrement; |
| 1851 | case ParseNodeKind::PostDecrementExpr: |
| 1852 | return PrivateOpEmitter::Kind::PostDecrement; |
| 1853 | case ParseNodeKind::PreDecrementExpr: |
| 1854 | return PrivateOpEmitter::Kind::PreDecrement; |
| 1855 | default: |
| 1856 | MOZ_CRASH("unexpected inc/dec node kind")do { do { } while (false); MOZ_ReportCrash("" "unexpected inc/dec node kind" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1856); AnnotateMozCrashReason("MOZ_CRASH(" "unexpected inc/dec node kind" ")"); do { MOZ_CrashSequence(__null, 1856); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 1857 | } |
| 1858 | } |
| 1859 | |
| 1860 | bool BytecodeEmitter::emitElemIncDec(UnaryNode* incDec, ValueUsage valueUsage) { |
| 1861 | PropertyByValue* elemExpr = &incDec->kid()->as<PropertyByValue>(); |
| 1862 | bool isSuper = elemExpr->isSuper(); |
| 1863 | MOZ_ASSERT(!elemExpr->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elemExpr->key().isKind(ParseNodeKind::PrivateName ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elemExpr->key().isKind(ParseNodeKind::PrivateName )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!elemExpr->key().isKind(ParseNodeKind::PrivateName)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 1863); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elemExpr->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 1863); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1864 | ParseNodeKind kind = incDec->getKind(); |
| 1865 | ElemOpEmitter eoe( |
| 1866 | this, ConvertIncDecKind(kind), |
| 1867 | isSuper ? ElemOpEmitter::ObjKind::Super : ElemOpEmitter::ObjKind::Other); |
| 1868 | if (!emitElemObjAndKey(elemExpr, eoe)) { |
| 1869 | // [stack] # if Super |
| 1870 | // [stack] THIS KEY |
| 1871 | // [stack] # otherwise |
| 1872 | // [stack] OBJ KEY |
| 1873 | return false; |
| 1874 | } |
| 1875 | if (!eoe.emitIncDec(valueUsage)) { |
| 1876 | // [stack] RESULT |
| 1877 | return false; |
| 1878 | } |
| 1879 | |
| 1880 | return true; |
| 1881 | } |
| 1882 | |
| 1883 | bool BytecodeEmitter::emitCallIncDec(UnaryNode* incDec) { |
| 1884 | MOZ_ASSERT(incDec->isKind(ParseNodeKind::PreIncrementExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec ->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind (ParseNodeKind::PostDecrementExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(incDec->isKind(ParseNodeKind ::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr ) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec ->isKind(ParseNodeKind::PostDecrementExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind(ParseNodeKind::PostDecrementExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1887); AnnotateMozCrashReason("MOZ_ASSERT" "(" "incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind(ParseNodeKind::PostDecrementExpr)" ")"); do { MOZ_CrashSequence(__null, 1887); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1885 | incDec->isKind(ParseNodeKind::PostIncrementExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec ->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind (ParseNodeKind::PostDecrementExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(incDec->isKind(ParseNodeKind ::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr ) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec ->isKind(ParseNodeKind::PostDecrementExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind(ParseNodeKind::PostDecrementExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1887); AnnotateMozCrashReason("MOZ_ASSERT" "(" "incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind(ParseNodeKind::PostDecrementExpr)" ")"); do { MOZ_CrashSequence(__null, 1887); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1886 | incDec->isKind(ParseNodeKind::PreDecrementExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec ->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind (ParseNodeKind::PostDecrementExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(incDec->isKind(ParseNodeKind ::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr ) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec ->isKind(ParseNodeKind::PostDecrementExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind(ParseNodeKind::PostDecrementExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1887); AnnotateMozCrashReason("MOZ_ASSERT" "(" "incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind(ParseNodeKind::PostDecrementExpr)" ")"); do { MOZ_CrashSequence(__null, 1887); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 1887 | incDec->isKind(ParseNodeKind::PostDecrementExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec ->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind (ParseNodeKind::PostDecrementExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(incDec->isKind(ParseNodeKind ::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr ) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec ->isKind(ParseNodeKind::PostDecrementExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind(ParseNodeKind::PostDecrementExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1887); AnnotateMozCrashReason("MOZ_ASSERT" "(" "incDec->isKind(ParseNodeKind::PreIncrementExpr) || incDec->isKind(ParseNodeKind::PostIncrementExpr) || incDec->isKind(ParseNodeKind::PreDecrementExpr) || incDec->isKind(ParseNodeKind::PostDecrementExpr)" ")"); do { MOZ_CrashSequence(__null, 1887); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1888 | |
| 1889 | ParseNode* call = incDec->kid(); |
| 1890 | MOZ_ASSERT(call->isKind(ParseNodeKind::CallExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(call->isKind(ParseNodeKind::CallExpr))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(call->isKind(ParseNodeKind::CallExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("call->isKind(ParseNodeKind::CallExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1890); AnnotateMozCrashReason("MOZ_ASSERT" "(" "call->isKind(ParseNodeKind::CallExpr)" ")"); do { MOZ_CrashSequence(__null, 1890); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1891 | if (!emitTree(call)) { |
| 1892 | // [stack] CALLRESULT |
| 1893 | return false; |
| 1894 | } |
| 1895 | |
| 1896 | // The increment/decrement has no side effects, so proceed to throw for |
| 1897 | // invalid assignment target. |
| 1898 | return emit2(JSOp::ThrowMsg, uint8_t(ThrowMsgKind::AssignToCall)); |
| 1899 | } |
| 1900 | |
| 1901 | bool BytecodeEmitter::emitPrivateIncDec(UnaryNode* incDec, |
| 1902 | ValueUsage valueUsage) { |
| 1903 | PrivateMemberAccess* privateExpr = &incDec->kid()->as<PrivateMemberAccess>(); |
| 1904 | ParseNodeKind kind = incDec->getKind(); |
| 1905 | PrivateOpEmitter xoe(this, PrivateConvertIncDecKind(kind), |
| 1906 | privateExpr->privateName().name()); |
| 1907 | if (!emitTree(&privateExpr->expression())) { |
| 1908 | // [stack] OBJ |
| 1909 | return false; |
| 1910 | } |
| 1911 | if (!xoe.emitReference()) { |
| 1912 | // [stack] OBJ NAME |
| 1913 | return false; |
| 1914 | } |
| 1915 | if (!xoe.emitIncDec(valueUsage)) { |
| 1916 | // [stack] RESULT |
| 1917 | return false; |
| 1918 | } |
| 1919 | |
| 1920 | return true; |
| 1921 | } |
| 1922 | |
| 1923 | bool BytecodeEmitter::emitDouble(double d) { |
| 1924 | BytecodeOffset offset; |
| 1925 | if (!emitCheck(JSOp::Double, 9, &offset)) { |
| 1926 | return false; |
| 1927 | } |
| 1928 | |
| 1929 | jsbytecode* code = bytecodeSection().code(offset); |
| 1930 | code[0] = jsbytecode(JSOp::Double); |
| 1931 | SET_INLINE_VALUE(code, DoubleValue(d)); |
| 1932 | bytecodeSection().updateDepth(JSOp::Double, offset); |
| 1933 | return true; |
| 1934 | } |
| 1935 | |
| 1936 | bool BytecodeEmitter::emitNumberOp(double dval) { |
| 1937 | int32_t ival; |
| 1938 | if (NumberIsInt32(dval, &ival)) { |
| 1939 | if (ival == 0) { |
| 1940 | return emit1(JSOp::Zero); |
| 1941 | } |
| 1942 | if (ival == 1) { |
| 1943 | return emit1(JSOp::One); |
| 1944 | } |
| 1945 | if ((int)(int8_t)ival == ival) { |
| 1946 | return emit2(JSOp::Int8, uint8_t(int8_t(ival))); |
| 1947 | } |
| 1948 | |
| 1949 | uint32_t u = uint32_t(ival); |
| 1950 | if (u < Bit(16)) { |
| 1951 | if (!emitUint16Operand(JSOp::Uint16, u)) { |
| 1952 | return false; |
| 1953 | } |
| 1954 | } else if (u < Bit(24)) { |
| 1955 | BytecodeOffset off; |
| 1956 | if (!emitN(JSOp::Uint24, 3, &off)) { |
| 1957 | return false; |
| 1958 | } |
| 1959 | SET_UINT24(bytecodeSection().code(off), u); |
| 1960 | } else { |
| 1961 | BytecodeOffset off; |
| 1962 | if (!emitN(JSOp::Int32, 4, &off)) { |
| 1963 | return false; |
| 1964 | } |
| 1965 | SET_INT32(bytecodeSection().code(off), ival); |
| 1966 | } |
| 1967 | return true; |
| 1968 | } |
| 1969 | |
| 1970 | return emitDouble(dval); |
| 1971 | } |
| 1972 | |
| 1973 | /* |
| 1974 | * Using MOZ_NEVER_INLINE in here is a workaround for llvm.org/pr14047. |
| 1975 | * LLVM is deciding to inline this function which uses a lot of stack space |
| 1976 | * into emitTree which is recursive and uses relatively little stack space. |
| 1977 | */ |
| 1978 | MOZ_NEVER_INLINE__attribute__((noinline)) bool BytecodeEmitter::emitSwitch(SwitchStatement* switchStmt) { |
| 1979 | LexicalScopeNode& lexical = switchStmt->lexicalForCaseList(); |
| 1980 | MOZ_ASSERT(lexical.isKind(ParseNodeKind::LexicalScope))do { static_assert( mozilla::detail::AssertionConditionType< decltype(lexical.isKind(ParseNodeKind::LexicalScope))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(lexical.isKind(ParseNodeKind::LexicalScope)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("lexical.isKind(ParseNodeKind::LexicalScope)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1980); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lexical.isKind(ParseNodeKind::LexicalScope)" ")"); do { MOZ_CrashSequence(__null, 1980); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1981 | ListNode* cases = &lexical.scopeBody()->as<ListNode>(); |
| 1982 | MOZ_ASSERT(cases->isKind(ParseNodeKind::StatementList))do { static_assert( mozilla::detail::AssertionConditionType< decltype(cases->isKind(ParseNodeKind::StatementList))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(cases->isKind(ParseNodeKind::StatementList)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("cases->isKind(ParseNodeKind::StatementList)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 1982); AnnotateMozCrashReason("MOZ_ASSERT" "(" "cases->isKind(ParseNodeKind::StatementList)" ")"); do { MOZ_CrashSequence(__null, 1982); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 1983 | |
| 1984 | SwitchEmitter se(this); |
| 1985 | if (!se.emitDiscriminant(switchStmt->discriminant().pn_pos.begin)) { |
| 1986 | return false; |
| 1987 | } |
| 1988 | |
| 1989 | if (!markStepBreakpoint()) { |
| 1990 | return false; |
| 1991 | } |
| 1992 | if (!emitTree(&switchStmt->discriminant())) { |
| 1993 | return false; |
| 1994 | } |
| 1995 | |
| 1996 | // Enter the scope before pushing the switch BreakableControl since all |
| 1997 | // breaks are under this scope. |
| 1998 | |
| 1999 | if (!lexical.isEmptyScope()) { |
| 2000 | if (!se.emitLexical(lexical.scopeBindings())) { |
| 2001 | return false; |
| 2002 | } |
| 2003 | |
| 2004 | // A switch statement may contain hoisted functions inside its |
| 2005 | // cases. The hasTopLevelFunctionDeclarations flag is propagated from the |
| 2006 | // StatementList bodies of the cases to the case list. |
| 2007 | if (cases->hasTopLevelFunctionDeclarations()) { |
| 2008 | for (ParseNode* item : cases->contents()) { |
| 2009 | CaseClause* caseClause = &item->as<CaseClause>(); |
| 2010 | ListNode* statements = caseClause->statementList(); |
| 2011 | if (statements->hasTopLevelFunctionDeclarations()) { |
| 2012 | if (!emitHoistedFunctionsInList(statements)) { |
| 2013 | return false; |
| 2014 | } |
| 2015 | } |
| 2016 | } |
| 2017 | } |
| 2018 | } else { |
| 2019 | MOZ_ASSERT(!cases->hasTopLevelFunctionDeclarations())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!cases->hasTopLevelFunctionDeclarations())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!cases->hasTopLevelFunctionDeclarations()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!cases->hasTopLevelFunctionDeclarations()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2019); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!cases->hasTopLevelFunctionDeclarations()" ")"); do { MOZ_CrashSequence(__null, 2019); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2020 | } |
| 2021 | |
| 2022 | SwitchEmitter::TableGenerator tableGen(this); |
| 2023 | uint32_t caseCount = cases->count() - (switchStmt->hasDefault() ? 1 : 0); |
| 2024 | if (caseCount == 0) { |
| 2025 | tableGen.finish(0); |
| 2026 | } else { |
| 2027 | for (ParseNode* item : cases->contents()) { |
| 2028 | CaseClause* caseClause = &item->as<CaseClause>(); |
| 2029 | if (caseClause->isDefault()) { |
| 2030 | continue; |
| 2031 | } |
| 2032 | |
| 2033 | ParseNode* caseValue = caseClause->caseExpression(); |
| 2034 | |
| 2035 | if (caseValue->getKind() != ParseNodeKind::NumberExpr) { |
| 2036 | tableGen.setInvalid(); |
| 2037 | break; |
| 2038 | } |
| 2039 | |
| 2040 | int32_t i; |
| 2041 | if (!NumberEqualsInt32(caseValue->as<NumericLiteral>().value(), &i)) { |
| 2042 | tableGen.setInvalid(); |
| 2043 | break; |
| 2044 | } |
| 2045 | |
| 2046 | if (!tableGen.addNumber(i)) { |
| 2047 | return false; |
| 2048 | } |
| 2049 | } |
| 2050 | |
| 2051 | tableGen.finish(caseCount); |
| 2052 | } |
| 2053 | |
| 2054 | if (!se.validateCaseCount(caseCount)) { |
| 2055 | return false; |
| 2056 | } |
| 2057 | |
| 2058 | bool isTableSwitch = tableGen.isValid(); |
| 2059 | if (isTableSwitch) { |
| 2060 | if (!se.emitTable(tableGen)) { |
| 2061 | return false; |
| 2062 | } |
| 2063 | } else { |
| 2064 | if (!se.emitCond()) { |
| 2065 | return false; |
| 2066 | } |
| 2067 | |
| 2068 | // Emit code for evaluating cases and jumping to case statements. |
| 2069 | for (ParseNode* item : cases->contents()) { |
| 2070 | CaseClause* caseClause = &item->as<CaseClause>(); |
| 2071 | if (caseClause->isDefault()) { |
| 2072 | continue; |
| 2073 | } |
| 2074 | |
| 2075 | if (!se.prepareForCaseValue()) { |
| 2076 | return false; |
| 2077 | } |
| 2078 | |
| 2079 | ParseNode* caseValue = caseClause->caseExpression(); |
| 2080 | // If the expression is a literal, suppress line number emission so |
| 2081 | // that debugging works more naturally. |
| 2082 | if (!emitTree( |
| 2083 | caseValue, ValueUsage::WantValue, |
| 2084 | caseValue->isLiteral() ? SUPPRESS_LINENOTE : EMIT_LINENOTE)) { |
| 2085 | return false; |
| 2086 | } |
| 2087 | |
| 2088 | if (!se.emitCaseJump()) { |
| 2089 | return false; |
| 2090 | } |
| 2091 | } |
| 2092 | } |
| 2093 | |
| 2094 | // Emit code for each case's statements. |
| 2095 | for (ParseNode* item : cases->contents()) { |
| 2096 | CaseClause* caseClause = &item->as<CaseClause>(); |
| 2097 | if (caseClause->isDefault()) { |
| 2098 | if (!se.emitDefaultBody()) { |
| 2099 | return false; |
| 2100 | } |
| 2101 | } else { |
| 2102 | if (isTableSwitch) { |
| 2103 | ParseNode* caseValue = caseClause->caseExpression(); |
| 2104 | MOZ_ASSERT(caseValue->isKind(ParseNodeKind::NumberExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(caseValue->isKind(ParseNodeKind::NumberExpr))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(caseValue->isKind(ParseNodeKind::NumberExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("caseValue->isKind(ParseNodeKind::NumberExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2104); AnnotateMozCrashReason("MOZ_ASSERT" "(" "caseValue->isKind(ParseNodeKind::NumberExpr)" ")"); do { MOZ_CrashSequence(__null, 2104); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2105 | |
| 2106 | NumericLiteral* literal = &caseValue->as<NumericLiteral>(); |
| 2107 | #ifdef DEBUG1 |
| 2108 | // Use NumberEqualsInt32 here because switches compare using |
| 2109 | // strict equality, which will equate -0 and +0. In contrast |
| 2110 | // NumberIsInt32 would return false for -0. |
| 2111 | int32_t v; |
| 2112 | MOZ_ASSERT(mozilla::NumberEqualsInt32(literal->value(), &v))do { static_assert( mozilla::detail::AssertionConditionType< decltype(mozilla::NumberEqualsInt32(literal->value(), & v))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(mozilla::NumberEqualsInt32(literal->value(), & v)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("mozilla::NumberEqualsInt32(literal->value(), &v)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2112); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mozilla::NumberEqualsInt32(literal->value(), &v)" ")"); do { MOZ_CrashSequence(__null, 2112); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2113 | #endif |
| 2114 | int32_t i = int32_t(literal->value()); |
| 2115 | |
| 2116 | if (!se.emitCaseBody(i, tableGen)) { |
| 2117 | return false; |
| 2118 | } |
| 2119 | } else { |
| 2120 | if (!se.emitCaseBody()) { |
| 2121 | return false; |
| 2122 | } |
| 2123 | } |
| 2124 | } |
| 2125 | |
| 2126 | if (!emitTree(caseClause->statementList())) { |
| 2127 | return false; |
| 2128 | } |
| 2129 | } |
| 2130 | |
| 2131 | if (!se.emitEnd()) { |
| 2132 | return false; |
| 2133 | } |
| 2134 | |
| 2135 | return true; |
| 2136 | } |
| 2137 | |
| 2138 | static constexpr size_t MaxResumeIndex = BitMask(24); |
| 2139 | |
| 2140 | bool BytecodeEmitter::checkResumeIndexLimit() { |
| 2141 | static_assert( |
| 2142 | MaxResumeIndex < uint32_t(AbstractGeneratorObject::RESUME_INDEX_RUNNING), |
| 2143 | "resumeIndex should not include magic AbstractGeneratorObject " |
| 2144 | "resumeIndex values"); |
| 2145 | static_assert( |
| 2146 | MaxResumeIndex <= INT32_MAX(2147483647) / sizeof(uintptr_t), |
| 2147 | "resumeIndex * sizeof(uintptr_t) must fit in an int32. JIT code relies " |
| 2148 | "on this when loading resume entries from BaselineScript"); |
| 2149 | |
| 2150 | size_t numIndices = |
| 2151 | bytecodeSection().resumeOffsetList().length() + |
| 2152 | bytecodeSection().tableSwitchOffsetList().numCaseOffsets(); |
| 2153 | if (numIndices > MaxResumeIndex) { |
| 2154 | reportError(nullptr, JSMSG_TOO_MANY_RESUME_INDEXES); |
| 2155 | return false; |
| 2156 | } |
| 2157 | return true; |
| 2158 | } |
| 2159 | |
| 2160 | bool BytecodeEmitter::allocateResumeIndex(BytecodeOffset offset, |
| 2161 | uint32_t* resumeIndex) { |
| 2162 | if (!checkResumeIndexLimit()) { |
| 2163 | return false; |
| 2164 | } |
| 2165 | *resumeIndex = bytecodeSection().resumeOffsetList().length(); |
| 2166 | return bytecodeSection().resumeOffsetList().append(offset.value()); |
| 2167 | } |
| 2168 | |
| 2169 | bool BytecodeEmitter::allocateTableSwitchResumeIndexRange( |
| 2170 | mozilla::Span<BytecodeOffset> caseOffsets, BytecodeOffset switchOffset, |
| 2171 | uint32_t* firstResumeIndex) { |
| 2172 | if (caseOffsets.empty()) { |
| 2173 | // Empty switches don't need adjustment. |
| 2174 | *firstResumeIndex = 0; |
| 2175 | return true; |
| 2176 | } |
| 2177 | auto& list = bytecodeSection().tableSwitchOffsetList(); |
| 2178 | |
| 2179 | // The final resume index depends on the number of yield and await ops in the |
| 2180 | // script, so store an index relative to the first table switch entry for now. |
| 2181 | // finishResumeOffsets adjusts it. |
| 2182 | *firstResumeIndex = list.numCaseOffsets(); |
| 2183 | if (!list.appendTableSwitch(switchOffset)) { |
| 2184 | return false; |
| 2185 | } |
| 2186 | |
| 2187 | for (BytecodeOffset offset : caseOffsets) { |
| 2188 | if (!checkResumeIndexLimit()) { |
| 2189 | return false; |
| 2190 | } |
| 2191 | if (!list.appendCaseOffset(offset)) { |
| 2192 | return false; |
| 2193 | } |
| 2194 | } |
| 2195 | |
| 2196 | return true; |
| 2197 | } |
| 2198 | |
| 2199 | bool BytecodeEmitter::finishResumeOffsets() { |
| 2200 | auto& resumeOffsets = bytecodeSection().resumeOffsetList(); |
| 2201 | auto& tableSwitches = bytecodeSection().tableSwitchOffsetList(); |
| 2202 | |
| 2203 | size_t numIndices = resumeOffsets.length() + tableSwitches.numCaseOffsets(); |
| 2204 | MOZ_RELEASE_ASSERT(numIndices <= MaxResumeIndex + 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(numIndices <= MaxResumeIndex + 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(numIndices <= MaxResumeIndex + 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("numIndices <= MaxResumeIndex + 1", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2204); AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "numIndices <= MaxResumeIndex + 1" ")"); do { MOZ_CrashSequence(__null, 2204); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2205 | |
| 2206 | // Without yield/await entries, the relative indices SwitchEmitter wrote are |
| 2207 | // already the final resume indices, so there's nothing to patch. |
| 2208 | if (resumeOffsets.length() == 0) { |
| 2209 | resumeOffsets.setFrom(std::move(tableSwitches.caseOffsets)); |
| 2210 | return true; |
| 2211 | } |
| 2212 | |
| 2213 | // The table switch entries go after the yield and await entries. |
| 2214 | uint32_t firstTableSwitchIndex = resumeOffsets.length(); |
| 2215 | if (!resumeOffsets.appendAll(tableSwitches.caseOffsets)) { |
| 2216 | return false; |
| 2217 | } |
| 2218 | for (BytecodeOffset switchOffset : tableSwitches.switchOffsets) { |
| 2219 | jsbytecode* pc = bytecodeSection().code(switchOffset); |
| 2220 | MOZ_ASSERT(JSOp(*pc) == JSOp::TableSwitch)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JSOp(*pc) == JSOp::TableSwitch)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JSOp(*pc) == JSOp::TableSwitch ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "JSOp(*pc) == JSOp::TableSwitch", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2220); AnnotateMozCrashReason("MOZ_ASSERT" "(" "JSOp(*pc) == JSOp::TableSwitch" ")"); do { MOZ_CrashSequence(__null, 2220); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2221 | pc += 3 * JUMP_OFFSET_LEN; |
| 2222 | SET_RESUMEINDEX(pc, GET_RESUMEINDEX(pc) + firstTableSwitchIndex); |
| 2223 | } |
| 2224 | return true; |
| 2225 | } |
| 2226 | |
| 2227 | bool BytecodeEmitter::emitYieldOp(JSOp op) { |
| 2228 | // ParseContext::Scope::setOwnStackSlotCount should check the fixed slot |
| 2229 | // for the following, and it should prevent using fixed slot if there are |
| 2230 | // too many bindings: |
| 2231 | // * generator or asyn function |
| 2232 | // * module code after top-level await |
| 2233 | MOZ_ASSERT(innermostEmitterScopeNoCheck()->frameSlotEnd() <=do { static_assert( mozilla::detail::AssertionConditionType< decltype(innermostEmitterScopeNoCheck()->frameSlotEnd() <= ParseContext::Scope::FixedSlotLimit)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(innermostEmitterScopeNoCheck ()->frameSlotEnd() <= ParseContext::Scope::FixedSlotLimit ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "innermostEmitterScopeNoCheck()->frameSlotEnd() <= ParseContext::Scope::FixedSlotLimit" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2234); AnnotateMozCrashReason("MOZ_ASSERT" "(" "innermostEmitterScopeNoCheck()->frameSlotEnd() <= ParseContext::Scope::FixedSlotLimit" ")"); do { MOZ_CrashSequence(__null, 2234); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2234 | ParseContext::Scope::FixedSlotLimit)do { static_assert( mozilla::detail::AssertionConditionType< decltype(innermostEmitterScopeNoCheck()->frameSlotEnd() <= ParseContext::Scope::FixedSlotLimit)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(innermostEmitterScopeNoCheck ()->frameSlotEnd() <= ParseContext::Scope::FixedSlotLimit ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "innermostEmitterScopeNoCheck()->frameSlotEnd() <= ParseContext::Scope::FixedSlotLimit" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2234); AnnotateMozCrashReason("MOZ_ASSERT" "(" "innermostEmitterScopeNoCheck()->frameSlotEnd() <= ParseContext::Scope::FixedSlotLimit" ")"); do { MOZ_CrashSequence(__null, 2234); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2235 | |
| 2236 | if (op == JSOp::FinalYieldRval) { |
| 2237 | return emit1(JSOp::FinalYieldRval); |
| 2238 | } |
| 2239 | |
| 2240 | MOZ_ASSERT(op == JSOp::InitialYield || op == JSOp::Yield ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::InitialYield || op == JSOp::Yield || op == JSOp::Await)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(op == JSOp::InitialYield || op == JSOp::Yield || op == JSOp::Await))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("op == JSOp::InitialYield || op == JSOp::Yield || op == JSOp::Await" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2241); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::InitialYield || op == JSOp::Yield || op == JSOp::Await" ")"); do { MOZ_CrashSequence(__null, 2241); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2241 | op == JSOp::Await)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::InitialYield || op == JSOp::Yield || op == JSOp::Await)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(op == JSOp::InitialYield || op == JSOp::Yield || op == JSOp::Await))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("op == JSOp::InitialYield || op == JSOp::Yield || op == JSOp::Await" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2241); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::InitialYield || op == JSOp::Yield || op == JSOp::Await" ")"); do { MOZ_CrashSequence(__null, 2241); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2242 | |
| 2243 | BytecodeOffset off; |
| 2244 | if (!emitN(op, 3, &off)) { |
| 2245 | return false; |
| 2246 | } |
| 2247 | |
| 2248 | // InitialYield is always the first yield node. |
| 2249 | MOZ_ASSERT_IF(op == JSOp::InitialYield, bytecodeSection().numYields() == 0)do { if (op == JSOp::InitialYield) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(bytecodeSection( ).numYields() == 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(bytecodeSection().numYields( ) == 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("bytecodeSection().numYields() == 0", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2249); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().numYields() == 0" ")"); do { MOZ_CrashSequence(__null, 2249); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 2250 | |
| 2251 | if (op == JSOp::InitialYield || op == JSOp::Yield) { |
| 2252 | bytecodeSection().addNumYields(); |
| 2253 | } |
| 2254 | |
| 2255 | uint32_t resumeIndex; |
| 2256 | if (!allocateResumeIndex(bytecodeSection().offset(), &resumeIndex)) { |
| 2257 | return false; |
| 2258 | } |
| 2259 | |
| 2260 | // InitialYield is the first resumable instruction. |
| 2261 | MOZ_ASSERT_IF(do { if (op == JSOp::InitialYield) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(resumeIndex == AbstractGeneratorObject ::RESUME_INDEX_INITIAL_YIELD)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(resumeIndex == AbstractGeneratorObject ::RESUME_INDEX_INITIAL_YIELD))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("resumeIndex == AbstractGeneratorObject::RESUME_INDEX_INITIAL_YIELD" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2263); AnnotateMozCrashReason("MOZ_ASSERT" "(" "resumeIndex == AbstractGeneratorObject::RESUME_INDEX_INITIAL_YIELD" ")"); do { MOZ_CrashSequence(__null, 2263); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 2262 | op == JSOp::InitialYield,do { if (op == JSOp::InitialYield) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(resumeIndex == AbstractGeneratorObject ::RESUME_INDEX_INITIAL_YIELD)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(resumeIndex == AbstractGeneratorObject ::RESUME_INDEX_INITIAL_YIELD))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("resumeIndex == AbstractGeneratorObject::RESUME_INDEX_INITIAL_YIELD" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2263); AnnotateMozCrashReason("MOZ_ASSERT" "(" "resumeIndex == AbstractGeneratorObject::RESUME_INDEX_INITIAL_YIELD" ")"); do { MOZ_CrashSequence(__null, 2263); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 2263 | resumeIndex == AbstractGeneratorObject::RESUME_INDEX_INITIAL_YIELD)do { if (op == JSOp::InitialYield) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(resumeIndex == AbstractGeneratorObject ::RESUME_INDEX_INITIAL_YIELD)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(resumeIndex == AbstractGeneratorObject ::RESUME_INDEX_INITIAL_YIELD))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("resumeIndex == AbstractGeneratorObject::RESUME_INDEX_INITIAL_YIELD" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2263); AnnotateMozCrashReason("MOZ_ASSERT" "(" "resumeIndex == AbstractGeneratorObject::RESUME_INDEX_INITIAL_YIELD" ")"); do { MOZ_CrashSequence(__null, 2263); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 2264 | |
| 2265 | SET_RESUMEINDEX(bytecodeSection().code(off), resumeIndex); |
| 2266 | |
| 2267 | BytecodeOffset unusedOffset; |
| 2268 | return emitJumpTargetOp(JSOp::AfterYield, &unusedOffset); |
| 2269 | } |
| 2270 | |
| 2271 | bool BytecodeEmitter::emitPushResumeKind(GeneratorResumeKind kind) { |
| 2272 | return emit2(JSOp::ResumeKind, uint8_t(kind)); |
| 2273 | } |
| 2274 | |
| 2275 | bool BytecodeEmitter::emitSetThis(BinaryNode* setThisNode) { |
| 2276 | // ParseNodeKind::SetThis is used to update |this| after a super() call |
| 2277 | // in a derived class constructor. |
| 2278 | |
| 2279 | MOZ_ASSERT(setThisNode->isKind(ParseNodeKind::SetThis))do { static_assert( mozilla::detail::AssertionConditionType< decltype(setThisNode->isKind(ParseNodeKind::SetThis))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(setThisNode->isKind(ParseNodeKind::SetThis)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("setThisNode->isKind(ParseNodeKind::SetThis)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2279); AnnotateMozCrashReason("MOZ_ASSERT" "(" "setThisNode->isKind(ParseNodeKind::SetThis)" ")"); do { MOZ_CrashSequence(__null, 2279); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2280 | MOZ_ASSERT(setThisNode->left()->isKind(ParseNodeKind::Name))do { static_assert( mozilla::detail::AssertionConditionType< decltype(setThisNode->left()->isKind(ParseNodeKind::Name ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(setThisNode->left()->isKind(ParseNodeKind::Name )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("setThisNode->left()->isKind(ParseNodeKind::Name)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2280); AnnotateMozCrashReason("MOZ_ASSERT" "(" "setThisNode->left()->isKind(ParseNodeKind::Name)" ")"); do { MOZ_CrashSequence(__null, 2280); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2281 | |
| 2282 | auto name = setThisNode->left()->as<NameNode>().name(); |
| 2283 | |
| 2284 | // The 'this' binding is not lexical, but due to super() semantics this |
| 2285 | // initialization needs to be treated as a lexical one. |
| 2286 | NameLocation loc = lookupName(name); |
| 2287 | NameLocation lexicalLoc; |
| 2288 | if (loc.kind() == NameLocation::Kind::FrameSlot) { |
| 2289 | lexicalLoc = NameLocation::FrameSlot(BindingKind::Let, loc.frameSlot()); |
| 2290 | } else if (loc.kind() == NameLocation::Kind::EnvironmentCoordinate) { |
| 2291 | EnvironmentCoordinate coord = loc.environmentCoordinate(); |
| 2292 | uint16_t hops = AssertedCast<uint16_t>(coord.hops()); |
| 2293 | lexicalLoc = NameLocation::EnvironmentCoordinate(BindingKind::Let, hops, |
| 2294 | coord.slot()); |
| 2295 | } else { |
| 2296 | MOZ_ASSERT(loc.kind() == NameLocation::Kind::Dynamic)do { static_assert( mozilla::detail::AssertionConditionType< decltype(loc.kind() == NameLocation::Kind::Dynamic)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(loc.kind() == NameLocation::Kind::Dynamic))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("loc.kind() == NameLocation::Kind::Dynamic" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2296); AnnotateMozCrashReason("MOZ_ASSERT" "(" "loc.kind() == NameLocation::Kind::Dynamic" ")"); do { MOZ_CrashSequence(__null, 2296); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2297 | lexicalLoc = loc; |
| 2298 | } |
| 2299 | |
| 2300 | NameOpEmitter noe(this, name, lexicalLoc, NameOpEmitter::Kind::Initialize); |
| 2301 | if (!noe.prepareForRhs()) { |
| 2302 | // [stack] |
| 2303 | return false; |
| 2304 | } |
| 2305 | |
| 2306 | // Emit the new |this| value. |
| 2307 | if (!emitTree(setThisNode->right())) { |
| 2308 | // [stack] NEWTHIS |
| 2309 | return false; |
| 2310 | } |
| 2311 | |
| 2312 | // Get the original |this| and throw if we already initialized |
| 2313 | // it. Do *not* use the NameLocation argument, as that's the special |
| 2314 | // lexical location below to deal with super() semantics. |
| 2315 | if (!emitGetName(name)) { |
| 2316 | // [stack] NEWTHIS THIS |
| 2317 | return false; |
| 2318 | } |
| 2319 | if (!emit1(JSOp::CheckThisReinit)) { |
| 2320 | // [stack] NEWTHIS THIS |
| 2321 | return false; |
| 2322 | } |
| 2323 | if (!emit1(JSOp::Pop)) { |
| 2324 | // [stack] NEWTHIS |
| 2325 | return false; |
| 2326 | } |
| 2327 | if (!noe.emitAssignment()) { |
| 2328 | // [stack] NEWTHIS |
| 2329 | return false; |
| 2330 | } |
| 2331 | |
| 2332 | if (!emitInitializeInstanceMembers(true)) { |
| 2333 | return false; |
| 2334 | } |
| 2335 | |
| 2336 | return true; |
| 2337 | } |
| 2338 | |
| 2339 | bool BytecodeEmitter::defineHoistedTopLevelFunctions(ParseNode* body) { |
| 2340 | MOZ_ASSERT(inPrologue())do { static_assert( mozilla::detail::AssertionConditionType< decltype(inPrologue())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(inPrologue()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("inPrologue()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2340); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inPrologue()" ")"); do { MOZ_CrashSequence(__null, 2340); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2341 | MOZ_ASSERT(sc->isGlobalContext() || (sc->isEvalContext() && !sc->strict()))do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isGlobalContext() || (sc->isEvalContext() && !sc->strict()))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isGlobalContext() || ( sc->isEvalContext() && !sc->strict())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->isGlobalContext() || (sc->isEvalContext() && !sc->strict())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2341); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isGlobalContext() || (sc->isEvalContext() && !sc->strict())" ")"); do { MOZ_CrashSequence(__null, 2341); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2342 | MOZ_ASSERT(body->is<LexicalScopeNode>() || body->is<ListNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(body->is<LexicalScopeNode>() || body->is <ListNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(body->is<LexicalScopeNode >() || body->is<ListNode>()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("body->is<LexicalScopeNode>() || body->is<ListNode>()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2342); AnnotateMozCrashReason("MOZ_ASSERT" "(" "body->is<LexicalScopeNode>() || body->is<ListNode>()" ")"); do { MOZ_CrashSequence(__null, 2342); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2343 | |
| 2344 | if (body->is<LexicalScopeNode>()) { |
| 2345 | body = body->as<LexicalScopeNode>().scopeBody(); |
| 2346 | MOZ_ASSERT(body->is<ListNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(body->is<ListNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(body->is<ListNode>( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("body->is<ListNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2346); AnnotateMozCrashReason("MOZ_ASSERT" "(" "body->is<ListNode>()" ")"); do { MOZ_CrashSequence(__null, 2346); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2347 | } |
| 2348 | |
| 2349 | if (!body->as<ListNode>().hasTopLevelFunctionDeclarations()) { |
| 2350 | return true; |
| 2351 | } |
| 2352 | |
| 2353 | return emitHoistedFunctionsInList(&body->as<ListNode>()); |
| 2354 | } |
| 2355 | |
| 2356 | // For Global and sloppy-Eval scripts, this performs most of the steps of the |
| 2357 | // spec's [GlobalDeclarationInstantiation] and [EvalDeclarationInstantiation] |
| 2358 | // operations. |
| 2359 | // |
| 2360 | // Note that while strict-Eval is handled in the same part of the spec, it never |
| 2361 | // fails for global-redeclaration checks so those scripts initialize directly in |
| 2362 | // their bytecode. |
| 2363 | bool BytecodeEmitter::emitDeclarationInstantiation(ParseNode* body) { |
| 2364 | if (sc->isModuleContext()) { |
| 2365 | // ES Modules have dedicated variable and lexial environments and therefore |
| 2366 | // do not have to perform redeclaration checks. We initialize their bindings |
| 2367 | // elsewhere in bytecode. |
| 2368 | return true; |
| 2369 | } |
| 2370 | |
| 2371 | if (sc->isEvalContext() && sc->strict()) { |
| 2372 | // Strict Eval has a dedicated variables (and lexical) environment and |
| 2373 | // therefore does not have to perform redeclaration checks. We initialize |
| 2374 | // their bindings elsewhere in the bytecode. |
| 2375 | return true; |
| 2376 | } |
| 2377 | |
| 2378 | // If we have no variables bindings, then we are done! |
| 2379 | if (sc->isGlobalContext()) { |
| 2380 | if (!sc->asGlobalContext()->bindings) { |
| 2381 | return true; |
| 2382 | } |
| 2383 | } else { |
| 2384 | MOZ_ASSERT(sc->isEvalContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isEvalContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isEvalContext()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("sc->isEvalContext()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2384); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isEvalContext()" ")"); do { MOZ_CrashSequence(__null, 2384); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2385 | |
| 2386 | if (!sc->asEvalContext()->bindings) { |
| 2387 | return true; |
| 2388 | } |
| 2389 | } |
| 2390 | |
| 2391 | #if DEBUG1 |
| 2392 | // There should be no emitted functions yet. |
| 2393 | for (const auto& thing : perScriptData().gcThingList().objects()) { |
| 2394 | MOZ_ASSERT(thing.isEmptyGlobalScope() || thing.isScope())do { static_assert( mozilla::detail::AssertionConditionType< decltype(thing.isEmptyGlobalScope() || thing.isScope())>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(thing.isEmptyGlobalScope() || thing.isScope()))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("thing.isEmptyGlobalScope() || thing.isScope()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2394); AnnotateMozCrashReason("MOZ_ASSERT" "(" "thing.isEmptyGlobalScope() || thing.isScope()" ")"); do { MOZ_CrashSequence(__null, 2394); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2395 | } |
| 2396 | #endif |
| 2397 | |
| 2398 | // Emit the hoisted functions to gc-things list. There is no bytecode |
| 2399 | // generated yet to bind them. |
| 2400 | if (!defineHoistedTopLevelFunctions(body)) { |
| 2401 | return false; |
| 2402 | } |
| 2403 | |
| 2404 | // Save the last GCThingIndex emitted. The hoisted functions are contained in |
| 2405 | // the gc-things list up until this point. This set of gc-things also contain |
| 2406 | // initial scopes (of which there must be at least one). |
| 2407 | MOZ_ASSERT(perScriptData().gcThingList().length() > 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(perScriptData().gcThingList().length() > 0)>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(perScriptData().gcThingList().length() > 0))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("perScriptData().gcThingList().length() > 0" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2407); AnnotateMozCrashReason("MOZ_ASSERT" "(" "perScriptData().gcThingList().length() > 0" ")"); do { MOZ_CrashSequence(__null, 2407); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2408 | GCThingIndex lastFun = |
| 2409 | GCThingIndex(perScriptData().gcThingList().length() - 1); |
| 2410 | |
| 2411 | #if DEBUG1 |
| 2412 | for (const auto& thing : perScriptData().gcThingList().objects()) { |
| 2413 | MOZ_ASSERT(thing.isEmptyGlobalScope() || thing.isScope() ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(thing.isEmptyGlobalScope() || thing.isScope() || thing .isFunction())>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(thing.isEmptyGlobalScope() || thing .isScope() || thing.isFunction()))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("thing.isEmptyGlobalScope() || thing.isScope() || thing.isFunction()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2414); AnnotateMozCrashReason("MOZ_ASSERT" "(" "thing.isEmptyGlobalScope() || thing.isScope() || thing.isFunction()" ")"); do { MOZ_CrashSequence(__null, 2414); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2414 | thing.isFunction())do { static_assert( mozilla::detail::AssertionConditionType< decltype(thing.isEmptyGlobalScope() || thing.isScope() || thing .isFunction())>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(thing.isEmptyGlobalScope() || thing .isScope() || thing.isFunction()))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("thing.isEmptyGlobalScope() || thing.isScope() || thing.isFunction()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2414); AnnotateMozCrashReason("MOZ_ASSERT" "(" "thing.isEmptyGlobalScope() || thing.isScope() || thing.isFunction()" ")"); do { MOZ_CrashSequence(__null, 2414); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2415 | } |
| 2416 | #endif |
| 2417 | |
| 2418 | // Check for declaration conflicts and initialize the bindings. |
| 2419 | // NOTE: The self-hosting top-level script should not populate the builtins |
| 2420 | // directly on the GlobalObject (and instead uses JSOp::GetIntrinsic for |
| 2421 | // lookups). |
| 2422 | if (emitterMode == BytecodeEmitter::EmitterMode::Normal) { |
| 2423 | if (!emitGCIndexOp(JSOp::GlobalOrEvalDeclInstantiation, lastFun)) { |
| 2424 | return false; |
| 2425 | } |
| 2426 | } |
| 2427 | |
| 2428 | return true; |
| 2429 | } |
| 2430 | |
| 2431 | bool BytecodeEmitter::emitScript(ParseNode* body) { |
| 2432 | if (!fc->checkCompilationCancellation()) { |
| 2433 | return false; |
| 2434 | } |
| 2435 | |
| 2436 | setScriptStartOffsetIfUnset(body->pn_pos.begin); |
| 2437 | |
| 2438 | MOZ_ASSERT(inPrologue())do { static_assert( mozilla::detail::AssertionConditionType< decltype(inPrologue())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(inPrologue()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("inPrologue()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2438); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inPrologue()" ")"); do { MOZ_CrashSequence(__null, 2438); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2439 | |
| 2440 | TDZCheckCache tdzCache(this); |
| 2441 | EmitterScope emitterScope(this); |
| 2442 | Maybe<AsyncEmitter> topLevelAwait; |
| 2443 | if (sc->isGlobalContext()) { |
| 2444 | if (!emitterScope.enterGlobal(this, sc->asGlobalContext())) { |
| 2445 | return false; |
| 2446 | } |
| 2447 | } else if (sc->isEvalContext()) { |
| 2448 | if (!emitterScope.enterEval(this, sc->asEvalContext())) { |
| 2449 | return false; |
| 2450 | } |
| 2451 | } else { |
| 2452 | MOZ_ASSERT(sc->isModuleContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isModuleContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isModuleContext()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->isModuleContext()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2452); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isModuleContext()" ")"); do { MOZ_CrashSequence(__null, 2452); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2453 | if (!emitterScope.enterModule(this, sc->asModuleContext())) { |
| 2454 | return false; |
| 2455 | } |
| 2456 | if (sc->asModuleContext()->isAsync()) { |
| 2457 | topLevelAwait.emplace(this); |
| 2458 | } |
| 2459 | } |
| 2460 | |
| 2461 | setFunctionBodyEndPos(body->pn_pos.end); |
| 2462 | |
| 2463 | bool isSloppyEval = sc->isEvalContext() && !sc->strict(); |
| 2464 | if (isSloppyEval && body->is<LexicalScopeNode>() && |
| 2465 | !body->as<LexicalScopeNode>().isEmptyScope()) { |
| 2466 | // Sloppy eval scripts may emit hoisted functions bindings with a |
| 2467 | // `JSOp::GlobalOrEvalDeclInstantiation` opcode below. If this eval needs a |
| 2468 | // top-level lexical environment, we must ensure that environment is created |
| 2469 | // before those functions are created and bound. |
| 2470 | // |
| 2471 | // This differs from the global-script case below because the global-lexical |
| 2472 | // environment exists outside the script itself. In the case of strict eval |
| 2473 | // scripts, the `emitterScope` above is already sufficient. |
| 2474 | EmitterScope lexicalEmitterScope(this); |
| 2475 | LexicalScopeNode* scope = &body->as<LexicalScopeNode>(); |
| 2476 | |
| 2477 | if (!lexicalEmitterScope.enterLexical(this, ScopeKind::Lexical, |
| 2478 | scope->scopeBindings())) { |
| 2479 | return false; |
| 2480 | } |
| 2481 | |
| 2482 | if (!emitDeclarationInstantiation(scope->scopeBody())) { |
| 2483 | return false; |
| 2484 | } |
| 2485 | |
| 2486 | switchToMain(); |
| 2487 | |
| 2488 | ParseNode* scopeBody = scope->scopeBody(); |
| 2489 | if (!emitLexicalScopeBody(scopeBody)) { |
| 2490 | return false; |
| 2491 | } |
| 2492 | |
| 2493 | if (!updateSourceCoordNotes(scopeBody->pn_pos.end)) { |
| 2494 | return false; |
| 2495 | } |
| 2496 | |
| 2497 | if (!lexicalEmitterScope.leave(this)) { |
| 2498 | return false; |
| 2499 | } |
| 2500 | } else { |
| 2501 | if (!emitDeclarationInstantiation(body)) { |
| 2502 | return false; |
| 2503 | } |
| 2504 | if (topLevelAwait) { |
| 2505 | if (!topLevelAwait->prepareForModule()) { |
| 2506 | return false; |
| 2507 | } |
| 2508 | } |
| 2509 | |
| 2510 | switchToMain(); |
| 2511 | |
| 2512 | if (!emitterScope.prepareForModuleDisposableScopeBody(this)) { |
| 2513 | return false; |
| 2514 | } |
| 2515 | |
| 2516 | if (topLevelAwait) { |
| 2517 | if (!topLevelAwait->prepareForBody()) { |
| 2518 | return false; |
| 2519 | } |
| 2520 | } |
| 2521 | |
| 2522 | if (!emitTree(body)) { |
| 2523 | // [stack] |
| 2524 | return false; |
| 2525 | } |
| 2526 | |
| 2527 | if (!updateSourceCoordNotes(body->pn_pos.end)) { |
| 2528 | return false; |
| 2529 | } |
| 2530 | } |
| 2531 | |
| 2532 | if (!emitterScope.emitModuleDisposableScopeBodyEnd(this)) { |
| 2533 | return false; |
| 2534 | } |
| 2535 | |
| 2536 | if (topLevelAwait) { |
| 2537 | if (!topLevelAwait->emitEndModule()) { |
| 2538 | return false; |
| 2539 | } |
| 2540 | } |
| 2541 | |
| 2542 | if (!markSimpleBreakpoint()) { |
| 2543 | return false; |
| 2544 | } |
| 2545 | |
| 2546 | if (!emitReturnRval()) { |
| 2547 | return false; |
| 2548 | } |
| 2549 | |
| 2550 | if (!emitterScope.leave(this)) { |
| 2551 | return false; |
| 2552 | } |
| 2553 | |
| 2554 | if (!NameFunctions(fc, parserAtoms(), body)) { |
| 2555 | return false; |
| 2556 | } |
| 2557 | |
| 2558 | // Create a Stencil and convert it into a JSScript. |
| 2559 | return intoScriptStencil(CompilationStencil::TopLevelIndex); |
| 2560 | } |
| 2561 | |
| 2562 | js::UniquePtr<ImmutableScriptData> |
| 2563 | BytecodeEmitter::createImmutableScriptData() { |
| 2564 | uint32_t nslots; |
| 2565 | if (!getNslots(&nslots)) { |
| 2566 | return nullptr; |
| 2567 | } |
| 2568 | |
| 2569 | if (!finishResumeOffsets()) { |
| 2570 | return nullptr; |
| 2571 | } |
| 2572 | |
| 2573 | bool isFunction = sc->isFunctionBox(); |
| 2574 | uint16_t funLength = isFunction ? sc->asFunctionBox()->length() : 0; |
| 2575 | |
| 2576 | mozilla::SaturateUint8 propertyCountEstimate = propertyAdditionEstimate; |
| 2577 | |
| 2578 | // Add fields to the property count estimate. |
| 2579 | if (isFunction && sc->asFunctionBox()->useMemberInitializers()) { |
| 2580 | propertyCountEstimate += |
| 2581 | sc->asFunctionBox()->memberInitializers().numMemberInitializers; |
| 2582 | } |
| 2583 | |
| 2584 | #ifdef DEBUG1 |
| 2585 | uint32_t codeLength = bytecodeSection().code().length(); |
| 2586 | bytecodeSection().tryNoteList().checkTryNotes(codeLength); |
| 2587 | bytecodeSection().scopeNoteList().checkScopeNotes(codeLength); |
| 2588 | #endif |
| 2589 | |
| 2590 | return ImmutableScriptData::new_( |
| 2591 | fc, mainOffset(), maxFixedSlots, nslots, bodyScopeIndex, |
| 2592 | bytecodeSection().numICEntries(), isFunction, funLength, |
| 2593 | propertyCountEstimate.value(), bytecodeSection().code(), |
| 2594 | bytecodeSection().notes(), bytecodeSection().resumeOffsetList().span(), |
| 2595 | bytecodeSection().scopeNoteList().span(), |
| 2596 | bytecodeSection().tryNoteList().span()); |
| 2597 | } |
| 2598 | |
| 2599 | bool BytecodeEmitter::emitCheckIsCallable() { |
| 2600 | // This emits code to check if the value at the top of the stack is |
| 2601 | // callable. The value is left on the stack. |
| 2602 | // [stack] VAL |
| 2603 | if (!emitAtomOp(JSOp::GetIntrinsic, |
| 2604 | TaggedParserAtomIndex::WellKnown::IsCallable())) { |
| 2605 | // [stack] VAL ISCALLABLE |
| 2606 | return false; |
| 2607 | } |
| 2608 | if (!emit1(JSOp::Undefined)) { |
| 2609 | // [stack] VAL ISCALLABLE UNDEFINED |
| 2610 | return false; |
| 2611 | } |
| 2612 | if (!emitDupAt(2)) { |
| 2613 | // [stack] VAL ISCALLABLE UNDEFINED VAL |
| 2614 | return false; |
| 2615 | } |
| 2616 | return emitCall(JSOp::Call, 1); |
| 2617 | // [stack] VAL ISCALLABLE_RESULT |
| 2618 | } |
| 2619 | |
| 2620 | bool BytecodeEmitter::getNslots(uint32_t* nslots) const { |
| 2621 | uint64_t nslots64 = |
| 2622 | maxFixedSlots + static_cast<uint64_t>(bytecodeSection().maxStackDepth()); |
| 2623 | if (nslots64 > UINT32_MAX(4294967295U)) { |
| 2624 | reportError(nullptr, JSMSG_NEED_DIET, "script"); |
| 2625 | return false; |
| 2626 | } |
| 2627 | *nslots = nslots64; |
| 2628 | return true; |
| 2629 | } |
| 2630 | |
| 2631 | bool BytecodeEmitter::emitFunctionScript(FunctionNode* funNode) { |
| 2632 | MOZ_ASSERT(inPrologue())do { static_assert( mozilla::detail::AssertionConditionType< decltype(inPrologue())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(inPrologue()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("inPrologue()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2632); AnnotateMozCrashReason("MOZ_ASSERT" "(" "inPrologue()" ")"); do { MOZ_CrashSequence(__null, 2632); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2633 | |
| 2634 | if (!fc->checkCompilationCancellation()) { |
| 2635 | return false; |
| 2636 | } |
| 2637 | |
| 2638 | ParamsBodyNode* paramsBody = funNode->body(); |
| 2639 | FunctionBox* funbox = sc->asFunctionBox(); |
| 2640 | |
| 2641 | setScriptStartOffsetIfUnset(paramsBody->pn_pos.begin); |
| 2642 | |
| 2643 | // [stack] |
| 2644 | |
| 2645 | FunctionScriptEmitter fse(this, funbox, Some(paramsBody->pn_pos.begin), |
| 2646 | Some(paramsBody->pn_pos.end)); |
| 2647 | if (!fse.prepareForParameters()) { |
| 2648 | // [stack] |
| 2649 | return false; |
| 2650 | } |
| 2651 | |
| 2652 | if (!emitFunctionFormalParameters(paramsBody)) { |
| 2653 | // [stack] |
| 2654 | return false; |
| 2655 | } |
| 2656 | |
| 2657 | if (!fse.prepareForBody()) { |
| 2658 | // [stack] |
| 2659 | return false; |
| 2660 | } |
| 2661 | |
| 2662 | if (!emitTree(paramsBody->body())) { |
| 2663 | // [stack] |
| 2664 | return false; |
| 2665 | } |
| 2666 | |
| 2667 | if (!fse.emitEndBody()) { |
| 2668 | // [stack] |
| 2669 | return false; |
| 2670 | } |
| 2671 | |
| 2672 | if (funbox->index() == CompilationStencil::TopLevelIndex) { |
| 2673 | if (!NameFunctions(fc, parserAtoms(), funNode)) { |
| 2674 | return false; |
| 2675 | } |
| 2676 | } |
| 2677 | |
| 2678 | return fse.intoStencil(); |
| 2679 | } |
| 2680 | |
| 2681 | class js::frontend::DestructuringLHSRef { |
| 2682 | struct None { |
| 2683 | size_t numReferenceSlots() const { return 0; } |
| 2684 | }; |
| 2685 | |
| 2686 | mozilla::Variant<None, NameOpEmitter, PropOpEmitter, ElemOpEmitter, |
| 2687 | PrivateOpEmitter> |
| 2688 | emitter_ = AsVariant(None{}); |
| 2689 | |
| 2690 | public: |
| 2691 | template <typename T> |
| 2692 | void from(T&& emitter) { |
| 2693 | emitter_.emplace<T>(std::forward<T>(emitter)); |
| 2694 | } |
| 2695 | |
| 2696 | template <typename T> |
| 2697 | T& emitter() { |
| 2698 | return emitter_.as<T>(); |
| 2699 | } |
| 2700 | |
| 2701 | /** |
| 2702 | * Return the number of values pushed onto the stack. |
| 2703 | */ |
| 2704 | size_t numReferenceSlots() const { |
| 2705 | return emitter_.match([](auto& e) { return e.numReferenceSlots(); }); |
| 2706 | } |
| 2707 | }; |
| 2708 | |
| 2709 | bool BytecodeEmitter::emitDestructuringLHSRef(ParseNode* target, |
| 2710 | DestructuringFlavor flav, |
| 2711 | DestructuringLHSRef& lref) { |
| 2712 | #ifdef DEBUG1 |
| 2713 | int depth = bytecodeSection().stackDepth(); |
| 2714 | #endif |
| 2715 | |
| 2716 | switch (target->getKind()) { |
| 2717 | case ParseNodeKind::ArrayExpr: |
| 2718 | case ParseNodeKind::ObjectExpr: |
| 2719 | // No need to recurse into ParseNodeKind::Array and ParseNodeKind::Object |
| 2720 | // subpatterns here, since emitSetOrInitializeDestructuring does the |
| 2721 | // recursion when setting or initializing the value. |
| 2722 | break; |
| 2723 | |
| 2724 | case ParseNodeKind::Name: { |
| 2725 | auto* name = &target->as<NameNode>(); |
| 2726 | NameOpEmitter noe(this, name->atom(), |
| 2727 | flav == DestructuringFlavor::Assignment |
| 2728 | ? NameOpEmitter::Kind::SimpleAssignment |
| 2729 | : NameOpEmitter::Kind::Initialize); |
| 2730 | if (!noe.prepareForRhs()) { |
| 2731 | return false; |
| 2732 | } |
| 2733 | |
| 2734 | lref.from(std::move(noe)); |
| 2735 | return true; |
| 2736 | } |
| 2737 | |
| 2738 | case ParseNodeKind::ArgumentsLength: |
| 2739 | case ParseNodeKind::DotExpr: { |
| 2740 | NonOptionalPropertyAccessBase* prop = |
| 2741 | &target->as<NonOptionalPropertyAccessBase>(); |
| 2742 | bool isSuper = prop->isSuper(); |
| 2743 | PropOpEmitter poe(this, PropOpEmitter::Kind::SimpleAssignment, |
| 2744 | isSuper ? PropOpEmitter::ObjKind::Super |
| 2745 | : PropOpEmitter::ObjKind::Other); |
| 2746 | if (!poe.prepareForObj()) { |
| 2747 | return false; |
| 2748 | } |
| 2749 | if (isSuper) { |
| 2750 | UnaryNode* base = &prop->expression().as<UnaryNode>(); |
| 2751 | if (!emitGetThisForSuperBase(base)) { |
| 2752 | // [stack] THIS SUPERBASE |
| 2753 | return false; |
| 2754 | } |
| 2755 | } else { |
| 2756 | if (!emitTree(&prop->expression())) { |
| 2757 | // [stack] OBJ |
| 2758 | return false; |
| 2759 | } |
| 2760 | } |
| 2761 | if (!poe.prepareForRhs()) { |
| 2762 | // [stack] # if Super |
| 2763 | // [stack] THIS SUPERBASE |
| 2764 | // [stack] # otherwise |
| 2765 | // [stack] OBJ |
| 2766 | return false; |
| 2767 | } |
| 2768 | |
| 2769 | lref.from(std::move(poe)); |
| 2770 | break; |
| 2771 | } |
| 2772 | |
| 2773 | case ParseNodeKind::ElemExpr: { |
| 2774 | PropertyByValue* elem = &target->as<PropertyByValue>(); |
| 2775 | bool isSuper = elem->isSuper(); |
| 2776 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2776); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 2776); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2777 | ElemOpEmitter eoe(this, ElemOpEmitter::Kind::SimpleAssignment, |
| 2778 | isSuper ? ElemOpEmitter::ObjKind::Super |
| 2779 | : ElemOpEmitter::ObjKind::Other); |
| 2780 | if (!emitElemObjAndKey(elem, eoe)) { |
| 2781 | // [stack] # if Super |
| 2782 | // [stack] THIS KEY |
| 2783 | // [stack] # otherwise |
| 2784 | // [stack] OBJ KEY |
| 2785 | return false; |
| 2786 | } |
| 2787 | if (!eoe.prepareForRhs()) { |
| 2788 | // [stack] # if Super |
| 2789 | // [stack] THIS KEY SUPERBASE |
| 2790 | // [stack] # otherwise |
| 2791 | // [stack] OBJ KEY |
| 2792 | return false; |
| 2793 | } |
| 2794 | |
| 2795 | lref.from(std::move(eoe)); |
| 2796 | break; |
| 2797 | } |
| 2798 | |
| 2799 | case ParseNodeKind::PrivateMemberExpr: { |
| 2800 | PrivateMemberAccess* privateExpr = &target->as<PrivateMemberAccess>(); |
| 2801 | PrivateOpEmitter xoe(this, PrivateOpEmitter::Kind::SimpleAssignment, |
| 2802 | privateExpr->privateName().name()); |
| 2803 | if (!emitTree(&privateExpr->expression())) { |
| 2804 | // [stack] OBJ |
| 2805 | return false; |
| 2806 | } |
| 2807 | if (!xoe.emitReference()) { |
| 2808 | // [stack] OBJ NAME |
| 2809 | return false; |
| 2810 | } |
| 2811 | |
| 2812 | lref.from(std::move(xoe)); |
| 2813 | break; |
| 2814 | } |
| 2815 | |
| 2816 | case ParseNodeKind::CallExpr: |
| 2817 | MOZ_ASSERT_UNREACHABLE(do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2820); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")"); do { MOZ_CrashSequence(__null, 2820); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2818 | "Parser::reportIfNotValidSimpleAssignmentTarget "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: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2820); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")"); do { MOZ_CrashSequence(__null, 2820); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2819 | "rejects function calls as assignment "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: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2820); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")"); do { MOZ_CrashSequence(__null, 2820); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2820 | "targets in destructuring assignments")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: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2820); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")"); do { MOZ_CrashSequence(__null, 2820); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2821 | break; |
| 2822 | |
| 2823 | default: |
| 2824 | MOZ_CRASH("emitDestructuringLHSRef: bad lhs kind")do { do { } while (false); MOZ_ReportCrash("" "emitDestructuringLHSRef: bad lhs kind" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2824); AnnotateMozCrashReason("MOZ_CRASH(" "emitDestructuringLHSRef: bad lhs kind" ")"); do { MOZ_CrashSequence(__null, 2824); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 2825 | } |
| 2826 | |
| 2827 | MOZ_ASSERT(bytecodeSection().stackDepth() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() == depth + int(lref.numReferenceSlots ()))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(bytecodeSection().stackDepth() == depth + int(lref.numReferenceSlots ())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("bytecodeSection().stackDepth() == depth + int(lref.numReferenceSlots())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2828); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() == depth + int(lref.numReferenceSlots())" ")"); do { MOZ_CrashSequence(__null, 2828); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2828 | depth + int(lref.numReferenceSlots()))do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() == depth + int(lref.numReferenceSlots ()))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(bytecodeSection().stackDepth() == depth + int(lref.numReferenceSlots ())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("bytecodeSection().stackDepth() == depth + int(lref.numReferenceSlots())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2828); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() == depth + int(lref.numReferenceSlots())" ")"); do { MOZ_CrashSequence(__null, 2828); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2829 | |
| 2830 | return true; |
| 2831 | } |
| 2832 | |
| 2833 | bool BytecodeEmitter::emitSetOrInitializeDestructuring( |
| 2834 | ParseNode* target, DestructuringFlavor flav, DestructuringLHSRef& lref) { |
| 2835 | // Now emit the lvalue opcode sequence. If the lvalue is a nested |
| 2836 | // destructuring initialiser-form, call ourselves to handle it, then pop |
| 2837 | // the matched value. Otherwise emit an lvalue bytecode sequence followed |
| 2838 | // by an assignment op. |
| 2839 | |
| 2840 | switch (target->getKind()) { |
| 2841 | case ParseNodeKind::ArrayExpr: |
| 2842 | case ParseNodeKind::ObjectExpr: |
| 2843 | if (!emitDestructuringOps(&target->as<ListNode>(), flav, |
| 2844 | SelfHostedIter::Deny)) { |
| 2845 | return false; |
| 2846 | } |
| 2847 | // emitDestructuringOps leaves the assigned (to-be-destructured) value on |
| 2848 | // top of the stack. |
| 2849 | break; |
| 2850 | |
| 2851 | case ParseNodeKind::Name: { |
| 2852 | // The environment is already pushed by emitDestructuringLHSRef. |
| 2853 | // [stack] ENV? VAL |
| 2854 | auto& noe = lref.emitter<NameOpEmitter>(); |
| 2855 | |
| 2856 | if (!noe.emitAssignment()) { |
| 2857 | // [stack] VAL |
| 2858 | return false; |
| 2859 | } |
| 2860 | break; |
| 2861 | } |
| 2862 | |
| 2863 | case ParseNodeKind::ArgumentsLength: |
| 2864 | case ParseNodeKind::DotExpr: { |
| 2865 | // The reference is already pushed by emitDestructuringLHSRef. |
| 2866 | // [stack] # if Super |
| 2867 | // [stack] THIS SUPERBASE VAL |
| 2868 | // [stack] # otherwise |
| 2869 | // [stack] OBJ VAL |
| 2870 | auto& poe = lref.emitter<PropOpEmitter>(); |
| 2871 | auto* prop = &target->as<NonOptionalPropertyAccessBase>(); |
| 2872 | |
| 2873 | if (!poe.emitAssignment(prop->key().atom())) { |
| 2874 | // [stack] # VAL |
| 2875 | return false; |
| 2876 | } |
| 2877 | break; |
| 2878 | } |
| 2879 | |
| 2880 | case ParseNodeKind::ElemExpr: { |
| 2881 | // The reference is already pushed by emitDestructuringLHSRef. |
| 2882 | // [stack] # if Super |
| 2883 | // [stack] THIS KEY SUPERBASE VAL |
| 2884 | // [stack] # otherwise |
| 2885 | // [stack] OBJ KEY VAL |
| 2886 | auto& eoe = lref.emitter<ElemOpEmitter>(); |
| 2887 | |
| 2888 | if (!eoe.emitAssignment()) { |
| 2889 | // [stack] VAL |
| 2890 | return false; |
| 2891 | } |
| 2892 | break; |
| 2893 | } |
| 2894 | |
| 2895 | case ParseNodeKind::PrivateMemberExpr: { |
| 2896 | // The reference is already pushed by emitDestructuringLHSRef. |
| 2897 | // [stack] OBJ NAME VAL |
| 2898 | auto& xoe = lref.emitter<PrivateOpEmitter>(); |
| 2899 | |
| 2900 | if (!xoe.emitAssignment()) { |
| 2901 | // [stack] VAL |
| 2902 | return false; |
| 2903 | } |
| 2904 | break; |
| 2905 | } |
| 2906 | |
| 2907 | case ParseNodeKind::CallExpr: |
| 2908 | MOZ_ASSERT_UNREACHABLE(do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2911); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")"); do { MOZ_CrashSequence(__null, 2911); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2909 | "Parser::reportIfNotValidSimpleAssignmentTarget "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: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2911); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")"); do { MOZ_CrashSequence(__null, 2911); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2910 | "rejects function calls as assignment "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: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2911); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")"); do { MOZ_CrashSequence(__null, 2911); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 2911 | "targets in destructuring assignments")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: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2911); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Parser::reportIfNotValidSimpleAssignmentTarget " "rejects function calls as assignment " "targets in destructuring assignments" ")"); do { MOZ_CrashSequence(__null, 2911); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2912 | break; |
| 2913 | |
| 2914 | default: |
| 2915 | MOZ_CRASH("emitSetOrInitializeDestructuring: bad lhs kind")do { do { } while (false); MOZ_ReportCrash("" "emitSetOrInitializeDestructuring: bad lhs kind" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2915); AnnotateMozCrashReason("MOZ_CRASH(" "emitSetOrInitializeDestructuring: bad lhs kind" ")"); do { MOZ_CrashSequence(__null, 2915); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 2916 | } |
| 2917 | |
| 2918 | // Pop the assigned value. |
| 2919 | if (!emit1(JSOp::Pop)) { |
| 2920 | // [stack] # empty |
| 2921 | return false; |
| 2922 | } |
| 2923 | |
| 2924 | return true; |
| 2925 | } |
| 2926 | |
| 2927 | JSOp BytecodeEmitter::getIterCallOp(JSOp callOp, |
| 2928 | SelfHostedIter selfHostedIter) const { |
| 2929 | if (emitterMode == BytecodeEmitter::SelfHosting) { |
| 2930 | MOZ_ASSERT(selfHostedIter != SelfHostedIter::Deny)do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(selfHostedIter != SelfHostedIter::Deny))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2930); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny" ")"); do { MOZ_CrashSequence(__null, 2930); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2931 | |
| 2932 | switch (callOp) { |
| 2933 | case JSOp::Call: |
| 2934 | return JSOp::CallContent; |
| 2935 | case JSOp::CallIter: |
| 2936 | return JSOp::CallContentIter; |
| 2937 | default: |
| 2938 | MOZ_CRASH("Unknown iterator call op")do { do { } while (false); MOZ_ReportCrash("" "Unknown iterator call op" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2938); AnnotateMozCrashReason("MOZ_CRASH(" "Unknown iterator call op" ")"); do { MOZ_CrashSequence(__null, 2938); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 2939 | } |
| 2940 | } |
| 2941 | |
| 2942 | return callOp; |
| 2943 | } |
| 2944 | |
| 2945 | bool BytecodeEmitter::emitIteratorNext( |
| 2946 | const Maybe<uint32_t>& callSourceCoordOffset, IteratorKind iterKind, |
| 2947 | SelfHostedIter selfHostedIter) { |
| 2948 | MOZ_ASSERT(selfHostedIter != SelfHostedIter::Deny ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" ".next() iteration is prohibited in self-hosted code because it" "can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2951); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" ".next() iteration is prohibited in self-hosted code because it" "can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 2951); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2949 | emitterMode != BytecodeEmitter::SelfHosting,do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" ".next() iteration is prohibited in self-hosted code because it" "can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2951); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" ".next() iteration is prohibited in self-hosted code because it" "can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 2951); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2950 | ".next() iteration is prohibited in self-hosted code because it"do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" ".next() iteration is prohibited in self-hosted code because it" "can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2951); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" ".next() iteration is prohibited in self-hosted code because it" "can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 2951); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2951 | "can run user-modifiable iteration code")do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" ".next() iteration is prohibited in self-hosted code because it" "can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2951); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" ".next() iteration is prohibited in self-hosted code because it" "can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 2951); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 2952 | |
| 2953 | // [stack] ... NEXT ITER |
| 2954 | MOZ_ASSERT(bytecodeSection().stackDepth() >= 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() >= 2)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() >= 2))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() >= 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 2954); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() >= 2" ")"); do { MOZ_CrashSequence(__null, 2954); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 2955 | |
| 2956 | if (!emitCall(getIterCallOp(JSOp::Call, selfHostedIter), 0, |
| 2957 | callSourceCoordOffset)) { |
| 2958 | // [stack] ... RESULT |
| 2959 | return false; |
| 2960 | } |
| 2961 | |
| 2962 | if (iterKind == IteratorKind::Async) { |
| 2963 | if (!emitAwaitInInnermostScope()) { |
| 2964 | // [stack] ... RESULT |
| 2965 | return false; |
| 2966 | } |
| 2967 | } |
| 2968 | |
| 2969 | if (!emitCheckIsObj(CheckIsObjectKind::IteratorNext)) { |
| 2970 | // [stack] ... RESULT |
| 2971 | return false; |
| 2972 | } |
| 2973 | return true; |
| 2974 | } |
| 2975 | |
| 2976 | bool BytecodeEmitter::emitIteratorCloseInScope(EmitterScope& currentScope, |
| 2977 | IteratorKind iterKind, |
| 2978 | CompletionKind completionKind, |
| 2979 | SelfHostedIter selfHostedIter) { |
| 2980 | MOZ_ASSERT(selfHostedIter != SelfHostedIter::Deny ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" ".close() on iterators is prohibited in self-hosted code because " "it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2983); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" ".close() on iterators is prohibited in self-hosted code because " "it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 2983); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2981 | emitterMode != BytecodeEmitter::SelfHosting,do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" ".close() on iterators is prohibited in self-hosted code because " "it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2983); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" ".close() on iterators is prohibited in self-hosted code because " "it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 2983); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2982 | ".close() on iterators is prohibited in self-hosted code because "do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" ".close() on iterators is prohibited in self-hosted code because " "it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2983); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" ".close() on iterators is prohibited in self-hosted code because " "it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 2983); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 2983 | "it can run user-modifiable iteration code")do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" ".close() on iterators is prohibited in self-hosted code because " "it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 2983); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" ".close() on iterators is prohibited in self-hosted code because " "it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 2983); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 2984 | |
| 2985 | if (iterKind == IteratorKind::Sync) { |
| 2986 | return emit2(JSOp::CloseIter, uint8_t(completionKind)); |
| 2987 | } |
| 2988 | |
| 2989 | // Generate inline logic corresponding to IteratorClose (ES2021 7.4.6) and |
| 2990 | // AsyncIteratorClose (ES2021 7.4.7). Steps numbers apply to both operations. |
| 2991 | // |
| 2992 | // Callers need to ensure that the iterator object is at the top of the |
| 2993 | // stack. |
| 2994 | |
| 2995 | // For non-Throw completions, we emit the equivalent of: |
| 2996 | // |
| 2997 | // var returnMethod = GetMethod(iterator, "return"); |
| 2998 | // if (returnMethod !== undefined) { |
| 2999 | // var innerResult = [Await] Call(returnMethod, iterator); |
| 3000 | // CheckIsObj(innerResult); |
| 3001 | // } |
| 3002 | // |
| 3003 | // Whereas for Throw completions, we emit: |
| 3004 | // |
| 3005 | // try { |
| 3006 | // var returnMethod = GetMethod(iterator, "return"); |
| 3007 | // if (returnMethod !== undefined) { |
| 3008 | // [Await] Call(returnMethod, iterator); |
| 3009 | // } |
| 3010 | // } catch {} |
| 3011 | |
| 3012 | Maybe<TryEmitter> tryCatch; |
| 3013 | |
| 3014 | if (completionKind == CompletionKind::Throw) { |
| 3015 | tryCatch.emplace(this, TryEmitter::Kind::TryCatch, |
| 3016 | TryEmitter::ControlKind::NonSyntactic); |
| 3017 | |
| 3018 | if (!tryCatch->emitTry()) { |
| 3019 | // [stack] ... ITER |
| 3020 | return false; |
| 3021 | } |
| 3022 | } |
| 3023 | |
| 3024 | if (!emit1(JSOp::Dup)) { |
| 3025 | // [stack] ... ITER ITER |
| 3026 | return false; |
| 3027 | } |
| 3028 | |
| 3029 | // Steps 1-2 are assertions, step 3 is implicit. |
| 3030 | |
| 3031 | // Step 4. |
| 3032 | // |
| 3033 | // Get the "return" method. |
| 3034 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::return_())) { |
| 3035 | // [stack] ... ITER RET |
| 3036 | return false; |
| 3037 | } |
| 3038 | |
| 3039 | // Step 5. |
| 3040 | // |
| 3041 | // Do nothing if "return" is undefined or null. |
| 3042 | InternalIfEmitter ifReturnMethodIsDefined(this); |
| 3043 | if (!emit1(JSOp::IsNullOrUndefined)) { |
| 3044 | // [stack] ... ITER RET NULL-OR-UNDEF |
| 3045 | return false; |
| 3046 | } |
| 3047 | |
| 3048 | if (!ifReturnMethodIsDefined.emitThenElse( |
| 3049 | IfEmitter::ConditionKind::Negative)) { |
| 3050 | // [stack] ... ITER RET |
| 3051 | return false; |
| 3052 | } |
| 3053 | |
| 3054 | // Steps 5.c, 7. |
| 3055 | // |
| 3056 | // Call the "return" method. |
| 3057 | if (!emit1(JSOp::Swap)) { |
| 3058 | // [stack] ... RET ITER |
| 3059 | return false; |
| 3060 | } |
| 3061 | |
| 3062 | if (!emitCall(getIterCallOp(JSOp::Call, selfHostedIter), 0)) { |
| 3063 | // [stack] ... RESULT |
| 3064 | return false; |
| 3065 | } |
| 3066 | |
| 3067 | // 7.4.7 AsyncIteratorClose, step 5.d. |
| 3068 | if (iterKind == IteratorKind::Async) { |
| 3069 | if (completionKind != CompletionKind::Throw) { |
| 3070 | // Await clobbers rval, so save the current rval. |
| 3071 | if (!emit1(JSOp::GetRval)) { |
| 3072 | // [stack] ... RESULT RVAL |
| 3073 | return false; |
| 3074 | } |
| 3075 | if (!emit1(JSOp::Swap)) { |
| 3076 | // [stack] ... RVAL RESULT |
| 3077 | return false; |
| 3078 | } |
| 3079 | } |
| 3080 | |
| 3081 | if (!emitAwaitInScope(currentScope)) { |
| 3082 | // [stack] ... RVAL? RESULT |
| 3083 | return false; |
| 3084 | } |
| 3085 | |
| 3086 | if (completionKind != CompletionKind::Throw) { |
| 3087 | if (!emit1(JSOp::Swap)) { |
| 3088 | // [stack] ... RESULT RVAL |
| 3089 | return false; |
| 3090 | } |
| 3091 | if (!emit1(JSOp::SetRval)) { |
| 3092 | // [stack] ... RESULT |
| 3093 | return false; |
| 3094 | } |
| 3095 | } |
| 3096 | } |
| 3097 | |
| 3098 | // Step 6 (Handled in caller). |
| 3099 | |
| 3100 | // Step 8. |
| 3101 | if (completionKind != CompletionKind::Throw) { |
| 3102 | // Check that the "return" result is an object. |
| 3103 | if (!emitCheckIsObj(CheckIsObjectKind::IteratorReturn)) { |
| 3104 | // [stack] ... RESULT |
| 3105 | return false; |
| 3106 | } |
| 3107 | } |
| 3108 | |
| 3109 | if (!ifReturnMethodIsDefined.emitElse()) { |
| 3110 | // [stack] ... ITER RET |
| 3111 | return false; |
| 3112 | } |
| 3113 | |
| 3114 | if (!emit1(JSOp::Pop)) { |
| 3115 | // [stack] ... ITER |
| 3116 | return false; |
| 3117 | } |
| 3118 | |
| 3119 | if (!ifReturnMethodIsDefined.emitEnd()) { |
| 3120 | return false; |
| 3121 | } |
| 3122 | |
| 3123 | if (completionKind == CompletionKind::Throw) { |
| 3124 | if (!tryCatch->emitCatch()) { |
| 3125 | // [stack] ... ITER EXC |
| 3126 | return false; |
| 3127 | } |
| 3128 | |
| 3129 | // Just ignore the exception thrown by call and await. |
| 3130 | if (!emit1(JSOp::Pop)) { |
| 3131 | // [stack] ... ITER |
| 3132 | return false; |
| 3133 | } |
| 3134 | |
| 3135 | if (!tryCatch->emitEnd()) { |
| 3136 | // [stack] ... ITER |
| 3137 | return false; |
| 3138 | } |
| 3139 | } |
| 3140 | |
| 3141 | // Step 9 (Handled in caller). |
| 3142 | |
| 3143 | return emit1(JSOp::Pop); |
| 3144 | // [stack] ... |
| 3145 | } |
| 3146 | |
| 3147 | bool BytecodeEmitter::emitDestructuringIteratorClose( |
| 3148 | SelfHostedIter selfHostedIter) { |
| 3149 | // [stack] ... OBJ NEXT ITER DONE |
| 3150 | |
| 3151 | InternalIfEmitter ifDone(this); |
| 3152 | if (!ifDone.emitThenElse()) { |
| 3153 | // [stack] ... OBJ NEXT ITER |
| 3154 | return false; |
| 3155 | } |
| 3156 | if (!emitPopN(2)) { |
| 3157 | // [stack] ... OBJ |
| 3158 | return false; |
| 3159 | } |
| 3160 | if (!ifDone.emitElse()) { |
| 3161 | // [stack] ... OBJ NEXT ITER |
| 3162 | return false; |
| 3163 | } |
| 3164 | if (!emit1(JSOp::Swap)) { |
| 3165 | // [stack] ... OBJ ITER NEXT |
| 3166 | return false; |
| 3167 | } |
| 3168 | if (!emit1(JSOp::Pop)) { |
| 3169 | // [stack] ... OBJ ITER |
| 3170 | return false; |
| 3171 | } |
| 3172 | if (!emitIteratorCloseInInnermostScope( |
| 3173 | IteratorKind::Sync, CompletionKind::Normal, selfHostedIter)) { |
| 3174 | // [stack] ... OBJ |
| 3175 | return false; |
| 3176 | } |
| 3177 | return ifDone.emitEnd(); |
| 3178 | } |
| 3179 | |
| 3180 | template <typename InnerEmitter> |
| 3181 | bool BytecodeEmitter::wrapWithDestructuringTryNote(int32_t iterDepth, |
| 3182 | InnerEmitter emitter) { |
| 3183 | MOZ_ASSERT(bytecodeSection().stackDepth() >= iterDepth)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() >= iterDepth)>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(bytecodeSection().stackDepth() >= iterDepth))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() >= iterDepth" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3183); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() >= iterDepth" ")"); do { MOZ_CrashSequence(__null, 3183); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3184 | #ifdef DEBUG1 |
| 3185 | auto* control = findInnermostNestableControl<DestructuringControl>(); |
| 3186 | MOZ_ASSERT(*control->nonLocalExitStackDepth() == iterDepth)do { static_assert( mozilla::detail::AssertionConditionType< decltype(*control->nonLocalExitStackDepth() == iterDepth)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(*control->nonLocalExitStackDepth() == iterDepth)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("*control->nonLocalExitStackDepth() == iterDepth" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3186); AnnotateMozCrashReason("MOZ_ASSERT" "(" "*control->nonLocalExitStackDepth() == iterDepth" ")"); do { MOZ_CrashSequence(__null, 3186); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3187 | #endif |
| 3188 | |
| 3189 | // Pad a nop at the beginning of the bytecode covered by the trynote so |
| 3190 | // that when unwinding environments, we may unwind to the scope |
| 3191 | // corresponding to the pc *before* the start, in case the first bytecode |
| 3192 | // emitted by |emitter| is the start of an inner scope. See comment above |
| 3193 | // UnwindEnvironmentToTryPc. |
| 3194 | if (!emit1(JSOp::TryDestructuring)) { |
| 3195 | return false; |
| 3196 | } |
| 3197 | |
| 3198 | BytecodeOffset start = bytecodeSection().offset(); |
| 3199 | if (!emitter(this)) { |
| 3200 | return false; |
| 3201 | } |
| 3202 | BytecodeOffset end = bytecodeSection().offset(); |
| 3203 | if (start != end) { |
| 3204 | return addTryNote(TryNoteKind::Destructuring, iterDepth, start, end); |
| 3205 | } |
| 3206 | return true; |
| 3207 | } |
| 3208 | |
| 3209 | bool BytecodeEmitter::emitDefault(ParseNode* defaultExpr, ParseNode* pattern) { |
| 3210 | // [stack] VALUE |
| 3211 | |
| 3212 | DefaultEmitter de(this); |
| 3213 | if (!de.prepareForDefault()) { |
| 3214 | // [stack] |
| 3215 | return false; |
| 3216 | } |
| 3217 | if (!emitInitializer(defaultExpr, pattern)) { |
| 3218 | // [stack] DEFAULTVALUE |
| 3219 | return false; |
| 3220 | } |
| 3221 | if (!de.emitEnd()) { |
| 3222 | // [stack] VALUE/DEFAULTVALUE |
| 3223 | return false; |
| 3224 | } |
| 3225 | return true; |
| 3226 | } |
| 3227 | |
| 3228 | bool BytecodeEmitter::emitAnonymousFunctionWithName( |
| 3229 | ParseNode* node, TaggedParserAtomIndex name) { |
| 3230 | MOZ_ASSERT(node->isDirectRHSAnonFunction())do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isDirectRHSAnonFunction())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->isDirectRHSAnonFunction ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("node->isDirectRHSAnonFunction()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3230); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isDirectRHSAnonFunction()" ")"); do { MOZ_CrashSequence(__null, 3230); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3231 | |
| 3232 | if (node->is<FunctionNode>()) { |
| 3233 | // Function doesn't have 'name' property at this point. |
| 3234 | // Set function's name at compile time. |
| 3235 | setFunName(node->as<FunctionNode>().funbox(), name); |
| 3236 | |
| 3237 | return emitTree(node); |
| 3238 | } |
| 3239 | |
| 3240 | MOZ_ASSERT(node->is<ClassNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->is<ClassNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->is<ClassNode> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("node->is<ClassNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3240); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->is<ClassNode>()" ")"); do { MOZ_CrashSequence(__null, 3240); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3241 | |
| 3242 | return emitClass(&node->as<ClassNode>(), ClassNameKind::InferredName, name); |
| 3243 | } |
| 3244 | |
| 3245 | bool BytecodeEmitter::emitAnonymousFunctionWithComputedName( |
| 3246 | ParseNode* node, FunctionPrefixKind prefixKind) { |
| 3247 | MOZ_ASSERT(node->isDirectRHSAnonFunction())do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isDirectRHSAnonFunction())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->isDirectRHSAnonFunction ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("node->isDirectRHSAnonFunction()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3247); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isDirectRHSAnonFunction()" ")"); do { MOZ_CrashSequence(__null, 3247); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3248 | |
| 3249 | if (node->is<FunctionNode>()) { |
| 3250 | if (!emitTree(node)) { |
| 3251 | // [stack] NAME FUN |
| 3252 | return false; |
| 3253 | } |
| 3254 | if (!emitDupAt(1)) { |
| 3255 | // [stack] NAME FUN NAME |
| 3256 | return false; |
| 3257 | } |
| 3258 | if (!emit2(JSOp::SetFunName, uint8_t(prefixKind))) { |
| 3259 | // [stack] NAME FUN |
| 3260 | return false; |
| 3261 | } |
| 3262 | return true; |
| 3263 | } |
| 3264 | |
| 3265 | MOZ_ASSERT(node->is<ClassNode>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->is<ClassNode>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->is<ClassNode> ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("node->is<ClassNode>()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3265); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->is<ClassNode>()" ")"); do { MOZ_CrashSequence(__null, 3265); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3266 | MOZ_ASSERT(prefixKind == FunctionPrefixKind::None)do { static_assert( mozilla::detail::AssertionConditionType< decltype(prefixKind == FunctionPrefixKind::None)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(prefixKind == FunctionPrefixKind::None))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("prefixKind == FunctionPrefixKind::None" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3266); AnnotateMozCrashReason("MOZ_ASSERT" "(" "prefixKind == FunctionPrefixKind::None" ")"); do { MOZ_CrashSequence(__null, 3266); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3267 | |
| 3268 | return emitClass(&node->as<ClassNode>(), ClassNameKind::ComputedName); |
| 3269 | } |
| 3270 | |
| 3271 | void BytecodeEmitter::setFunName(FunctionBox* funbox, |
| 3272 | TaggedParserAtomIndex name) const { |
| 3273 | // The inferred name may already be set if this function is an interpreted |
| 3274 | // lazy function and we OOM'ed after we set the inferred name the first |
| 3275 | // time. |
| 3276 | if (funbox->hasInferredName()) { |
| 3277 | MOZ_ASSERT(!funbox->emitBytecode)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!funbox->emitBytecode)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!funbox->emitBytecode))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!funbox->emitBytecode" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3277); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!funbox->emitBytecode" ")"); do { MOZ_CrashSequence(__null, 3277); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3278 | MOZ_ASSERT(funbox->displayAtom() == name)do { static_assert( mozilla::detail::AssertionConditionType< decltype(funbox->displayAtom() == name)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(funbox->displayAtom() == name ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "funbox->displayAtom() == name", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3278); AnnotateMozCrashReason("MOZ_ASSERT" "(" "funbox->displayAtom() == name" ")"); do { MOZ_CrashSequence(__null, 3278); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3279 | } else { |
| 3280 | funbox->setInferredName(name); |
| 3281 | } |
| 3282 | } |
| 3283 | |
| 3284 | bool BytecodeEmitter::emitInitializer(ParseNode* initializer, |
| 3285 | ParseNode* pattern) { |
| 3286 | if (initializer->isDirectRHSAnonFunction()) { |
| 3287 | MOZ_ASSERT(!pattern->isInParens())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!pattern->isInParens())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!pattern->isInParens()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("!pattern->isInParens()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3287); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!pattern->isInParens()" ")"); do { MOZ_CrashSequence(__null, 3287); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3288 | auto name = pattern->as<NameNode>().name(); |
| 3289 | if (!emitAnonymousFunctionWithName(initializer, name)) { |
| 3290 | return false; |
| 3291 | } |
| 3292 | } else { |
| 3293 | if (!emitTree(initializer)) { |
| 3294 | return false; |
| 3295 | } |
| 3296 | } |
| 3297 | |
| 3298 | return true; |
| 3299 | } |
| 3300 | |
| 3301 | bool BytecodeEmitter::emitDestructuringOpsArray(ListNode* pattern, |
| 3302 | DestructuringFlavor flav, |
| 3303 | SelfHostedIter selfHostedIter) { |
| 3304 | MOZ_ASSERT(pattern->isKind(ParseNodeKind::ArrayExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pattern->isKind(ParseNodeKind::ArrayExpr))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(pattern->isKind(ParseNodeKind::ArrayExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pattern->isKind(ParseNodeKind::ArrayExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3304); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pattern->isKind(ParseNodeKind::ArrayExpr)" ")"); do { MOZ_CrashSequence(__null, 3304); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3305 | MOZ_ASSERT(bytecodeSection().stackDepth() != 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() != 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(bytecodeSection().stackDepth () != 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("bytecodeSection().stackDepth() != 0", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3305); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() != 0" ")"); do { MOZ_CrashSequence(__null, 3305); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3306 | |
| 3307 | // Here's pseudo code for |let [a, b, , c=y, ...d] = x;| |
| 3308 | // |
| 3309 | // Lines that are annotated "covered by trynote" mean that upon throwing |
| 3310 | // an exception, IteratorClose is called on iter only if done is false. |
| 3311 | // |
| 3312 | // let x, y; |
| 3313 | // let a, b, c, d; |
| 3314 | // let iter, next, lref, result, done, value; // stack values |
| 3315 | // |
| 3316 | // // NOTE: the fast path for this example is not applicable, because of |
| 3317 | // // the spread and the assignment |c=y|, but it is documented here for a |
| 3318 | // // simpler example, |let [a,b] = x;| |
| 3319 | // // |
| 3320 | // // if (IsOptimizableArray(x)) { |
| 3321 | // // a = x[0]; |
| 3322 | // // b = x[1]; |
| 3323 | // // goto end: // (skip everything below) |
| 3324 | // // } |
| 3325 | // |
| 3326 | // iter = x[Symbol.iterator](); |
| 3327 | // next = iter.next; |
| 3328 | // |
| 3329 | // // ==== emitted by loop for a ==== |
| 3330 | // lref = GetReference(a); // covered by trynote |
| 3331 | // |
| 3332 | // result = Call(next, iter); |
| 3333 | // done = result.done; |
| 3334 | // |
| 3335 | // if (done) |
| 3336 | // value = undefined; |
| 3337 | // else |
| 3338 | // value = result.value; |
| 3339 | // |
| 3340 | // SetOrInitialize(lref, value); // covered by trynote |
| 3341 | // |
| 3342 | // // ==== emitted by loop for b ==== |
| 3343 | // lref = GetReference(b); // covered by trynote |
| 3344 | // |
| 3345 | // if (done) { |
| 3346 | // value = undefined; |
| 3347 | // } else { |
| 3348 | // result = Call(next, iter); |
| 3349 | // done = result.done; |
| 3350 | // if (done) |
| 3351 | // value = undefined; |
| 3352 | // else |
| 3353 | // value = result.value; |
| 3354 | // } |
| 3355 | // |
| 3356 | // SetOrInitialize(lref, value); // covered by trynote |
| 3357 | // |
| 3358 | // // ==== emitted by loop for elision ==== |
| 3359 | // if (done) { |
| 3360 | // value = undefined; |
| 3361 | // } else { |
| 3362 | // result = Call(next, iter); |
| 3363 | // done = result.done; |
| 3364 | // if (done) |
| 3365 | // value = undefined; |
| 3366 | // else |
| 3367 | // value = result.value; |
| 3368 | // } |
| 3369 | // |
| 3370 | // // ==== emitted by loop for c ==== |
| 3371 | // lref = GetReference(c); // covered by trynote |
| 3372 | // |
| 3373 | // if (done) { |
| 3374 | // value = undefined; |
| 3375 | // } else { |
| 3376 | // result = Call(next, iter); |
| 3377 | // done = result.done; |
| 3378 | // if (done) |
| 3379 | // value = undefined; |
| 3380 | // else |
| 3381 | // value = result.value; |
| 3382 | // } |
| 3383 | // |
| 3384 | // if (value === undefined) |
| 3385 | // value = y; // covered by trynote |
| 3386 | // |
| 3387 | // SetOrInitialize(lref, value); // covered by trynote |
| 3388 | // |
| 3389 | // // ==== emitted by loop for d ==== |
| 3390 | // lref = GetReference(d); // covered by trynote |
| 3391 | // |
| 3392 | // if (done) |
| 3393 | // value = []; |
| 3394 | // else |
| 3395 | // value = [...iter]; |
| 3396 | // |
| 3397 | // SetOrInitialize(lref, value); // covered by trynote |
| 3398 | // |
| 3399 | // // === emitted after loop === |
| 3400 | // if (!done) |
| 3401 | // IteratorClose(iter); |
| 3402 | // |
| 3403 | // end: |
| 3404 | |
| 3405 | bool isEligibleForArrayOptimizations = true; |
| 3406 | for (ParseNode* member : pattern->contents()) { |
| 3407 | switch (member->getKind()) { |
| 3408 | case ParseNodeKind::Elision: |
| 3409 | break; |
| 3410 | case ParseNodeKind::Name: { |
| 3411 | auto name = member->as<NameNode>().name(); |
| 3412 | NameLocation loc = lookupName(name); |
| 3413 | if (loc.kind() != NameLocation::Kind::ArgumentSlot && |
| 3414 | loc.kind() != NameLocation::Kind::FrameSlot && |
| 3415 | loc.kind() != NameLocation::Kind::EnvironmentCoordinate) { |
| 3416 | isEligibleForArrayOptimizations = false; |
| 3417 | } |
| 3418 | break; |
| 3419 | } |
| 3420 | default: |
| 3421 | // Unfortunately we can't handle any recursive destructuring, |
| 3422 | // because we can't guarantee that the recursed-into parts |
| 3423 | // won't run code which invalidates our constraints. We also |
| 3424 | // cannot handle ParseNodeKind::AssignExpr for similar reasons. |
| 3425 | isEligibleForArrayOptimizations = false; |
| 3426 | break; |
| 3427 | } |
| 3428 | if (!isEligibleForArrayOptimizations) { |
| 3429 | break; |
| 3430 | } |
| 3431 | } |
| 3432 | |
| 3433 | // Use an iterator to destructure the RHS, instead of index lookup. We |
| 3434 | // must leave the *original* value on the stack. |
| 3435 | if (!emit1(JSOp::Dup)) { |
| 3436 | // [stack] ... OBJ OBJ |
| 3437 | return false; |
| 3438 | } |
| 3439 | |
| 3440 | Maybe<InternalIfEmitter> ifArrayOptimizable; |
| 3441 | |
| 3442 | if (isEligibleForArrayOptimizations) { |
| 3443 | ifArrayOptimizable.emplace( |
| 3444 | this, BranchEmitterBase::LexicalKind::MayContainLexicalAccessInBranch); |
| 3445 | |
| 3446 | if (!emit1(JSOp::Dup)) { |
| 3447 | // [stack] OBJ OBJ |
| 3448 | return false; |
| 3449 | } |
| 3450 | |
| 3451 | if (!emit1(JSOp::OptimizeGetIterator)) { |
| 3452 | // [stack] OBJ OBJ IS_OPTIMIZABLE |
| 3453 | return false; |
| 3454 | } |
| 3455 | |
| 3456 | if (!ifArrayOptimizable->emitThenElse()) { |
| 3457 | // [stack] OBJ OBJ |
| 3458 | return false; |
| 3459 | } |
| 3460 | |
| 3461 | if (!emitAtomOp(JSOp::GetProp, |
| 3462 | TaggedParserAtomIndex::WellKnown::length())) { |
| 3463 | // [stack] OBJ LENGTH |
| 3464 | return false; |
| 3465 | } |
| 3466 | |
| 3467 | if (!emit1(JSOp::Swap)) { |
| 3468 | // [stack] LENGTH OBJ |
| 3469 | return false; |
| 3470 | } |
| 3471 | |
| 3472 | uint32_t idx = 0; |
| 3473 | for (ParseNode* member : pattern->contents()) { |
| 3474 | if (member->isKind(ParseNodeKind::Elision)) { |
| 3475 | idx += 1; |
| 3476 | continue; |
| 3477 | } |
| 3478 | MOZ_ASSERT(member->isKind(ParseNodeKind::Name))do { static_assert( mozilla::detail::AssertionConditionType< decltype(member->isKind(ParseNodeKind::Name))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(member->isKind(ParseNodeKind::Name)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("member->isKind(ParseNodeKind::Name)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3478); AnnotateMozCrashReason("MOZ_ASSERT" "(" "member->isKind(ParseNodeKind::Name)" ")"); do { MOZ_CrashSequence(__null, 3478); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3479 | |
| 3480 | if (!emit1(JSOp::Dup)) { |
| 3481 | // [stack] LENGTH OBJ OBJ |
| 3482 | return false; |
| 3483 | } |
| 3484 | |
| 3485 | if (!emitNumberOp(idx)) { |
| 3486 | // [stack] LENGTH OBJ OBJ IDX |
| 3487 | return false; |
| 3488 | } |
| 3489 | |
| 3490 | if (!emit1(JSOp::Dup)) { |
| 3491 | // [stack] LENGTH OBJ OBJ IDX IDX |
| 3492 | return false; |
| 3493 | } |
| 3494 | |
| 3495 | if (!emitDupAt(4)) { |
| 3496 | // [stack] LENGTH OBJ OBJ IDX IDX LENGTH |
| 3497 | return false; |
| 3498 | } |
| 3499 | |
| 3500 | if (!emit1(JSOp::Lt)) { |
| 3501 | // [stack] LENGTH OBJ OBJ IDX IS_IN_DENSE_BOUNDS |
| 3502 | return false; |
| 3503 | } |
| 3504 | |
| 3505 | InternalIfEmitter isInDenseBounds(this); |
| 3506 | if (!isInDenseBounds.emitThenElse()) { |
| 3507 | // [stack] LENGTH OBJ OBJ IDX |
| 3508 | return false; |
| 3509 | } |
| 3510 | |
| 3511 | if (!emit1(JSOp::GetElem)) { |
| 3512 | // [stack] LENGTH OBJ VALUE |
| 3513 | return false; |
| 3514 | } |
| 3515 | |
| 3516 | if (!isInDenseBounds.emitElse()) { |
| 3517 | // [stack] LENGTH OBJ OBJ IDX |
| 3518 | return false; |
| 3519 | } |
| 3520 | |
| 3521 | if (!emitPopN(2)) { |
| 3522 | // [stack] LENGTH OBJ |
| 3523 | return false; |
| 3524 | } |
| 3525 | |
| 3526 | if (!emit1(JSOp::Undefined)) { |
| 3527 | // [stack] LENGTH OBJ UNDEFINED |
| 3528 | return false; |
| 3529 | } |
| 3530 | |
| 3531 | if (!isInDenseBounds.emitEnd()) { |
| 3532 | // [stack] LENGTH OBJ VALUE|UNDEFINED |
| 3533 | return false; |
| 3534 | } |
| 3535 | |
| 3536 | DestructuringLHSRef lref; |
| 3537 | if (!emitDestructuringLHSRef(member, flav, lref)) { |
| 3538 | // [stack] LENGTH OBJ |
| 3539 | return false; |
| 3540 | } |
| 3541 | |
| 3542 | if (!emitSetOrInitializeDestructuring(member, flav, lref)) { |
| 3543 | // [stack] LENGTH OBJ |
| 3544 | return false; |
| 3545 | } |
| 3546 | |
| 3547 | idx += 1; |
| 3548 | } |
| 3549 | |
| 3550 | if (!emit1(JSOp::Swap)) { |
| 3551 | // [stack] OBJ LENGTH |
| 3552 | return false; |
| 3553 | } |
| 3554 | |
| 3555 | if (!emit1(JSOp::Pop)) { |
| 3556 | // [stack] OBJ |
| 3557 | return false; |
| 3558 | } |
| 3559 | |
| 3560 | if (!ifArrayOptimizable->emitElse()) { |
| 3561 | // [stack] OBJ OBJ |
| 3562 | return false; |
| 3563 | } |
| 3564 | } |
| 3565 | |
| 3566 | if (!emitIterator(selfHostedIter)) { |
| 3567 | // [stack] ... OBJ NEXT ITER |
| 3568 | return false; |
| 3569 | } |
| 3570 | |
| 3571 | // For an empty pattern [], call IteratorClose unconditionally. Nothing |
| 3572 | // else needs to be done. |
| 3573 | if (!pattern->head()) { |
| 3574 | if (!emit1(JSOp::Swap)) { |
| 3575 | // [stack] ... OBJ ITER NEXT |
| 3576 | return false; |
| 3577 | } |
| 3578 | if (!emit1(JSOp::Pop)) { |
| 3579 | // [stack] ... OBJ ITER |
| 3580 | return false; |
| 3581 | } |
| 3582 | |
| 3583 | if (!emitIteratorCloseInInnermostScope( |
| 3584 | IteratorKind::Sync, CompletionKind::Normal, selfHostedIter)) { |
| 3585 | // [stack] ... OBJ |
| 3586 | return false; |
| 3587 | } |
| 3588 | |
| 3589 | if (ifArrayOptimizable.isSome()) { |
| 3590 | if (!ifArrayOptimizable->emitEnd()) { |
| 3591 | // [stack] OBJ |
| 3592 | return false; |
| 3593 | } |
| 3594 | } |
| 3595 | |
| 3596 | return true; |
| 3597 | } |
| 3598 | |
| 3599 | // Push an initial FALSE value for DONE. |
| 3600 | if (!emit1(JSOp::False)) { |
| 3601 | // [stack] ... OBJ NEXT ITER FALSE |
| 3602 | return false; |
| 3603 | } |
| 3604 | |
| 3605 | // TryNoteKind::Destructuring expects the iterator and the done value |
| 3606 | // to be the second to top and the top of the stack, respectively. |
| 3607 | // IteratorClose is called upon exception only if done is false. |
| 3608 | int32_t tryNoteDepth = bytecodeSection().stackDepth(); |
| 3609 | |
| 3610 | // A forced return from a `yield` will jump out of the destructuring region, |
| 3611 | // so in that case DestructuringControl emits the IteratorClose after the |
| 3612 | // loop. |
| 3613 | DestructuringControl control(this, selfHostedIter); |
| 3614 | control.setNonLocalExitStackDepth(tryNoteDepth); |
| 3615 | |
| 3616 | for (ParseNode* member : pattern->contents()) { |
| 3617 | bool isFirst = member == pattern->head(); |
| 3618 | DebugOnly<bool> hasNext = !!member->pn_next; |
| 3619 | |
| 3620 | ParseNode* subpattern; |
| 3621 | if (member->isKind(ParseNodeKind::Spread)) { |
| 3622 | subpattern = member->as<UnaryNode>().kid(); |
| 3623 | |
| 3624 | MOZ_ASSERT(!subpattern->isKind(ParseNodeKind::AssignExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!subpattern->isKind(ParseNodeKind::AssignExpr))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!subpattern->isKind(ParseNodeKind::AssignExpr)))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("!subpattern->isKind(ParseNodeKind::AssignExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3624); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!subpattern->isKind(ParseNodeKind::AssignExpr)" ")"); do { MOZ_CrashSequence(__null, 3624); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3625 | } else { |
| 3626 | subpattern = member; |
| 3627 | } |
| 3628 | |
| 3629 | ParseNode* lhsPattern = subpattern; |
| 3630 | ParseNode* pndefault = nullptr; |
| 3631 | if (subpattern->isKind(ParseNodeKind::AssignExpr)) { |
| 3632 | lhsPattern = subpattern->as<AssignmentNode>().left(); |
| 3633 | pndefault = subpattern->as<AssignmentNode>().right(); |
| 3634 | } |
| 3635 | |
| 3636 | // Spec requires LHS reference to be evaluated first. |
| 3637 | DestructuringLHSRef lref; |
| 3638 | bool isElision = lhsPattern->isKind(ParseNodeKind::Elision); |
| 3639 | if (!isElision) { |
| 3640 | auto emitLHSRef = [lhsPattern, flav, &lref](BytecodeEmitter* bce) { |
| 3641 | return bce->emitDestructuringLHSRef(lhsPattern, flav, lref); |
| 3642 | // [stack] ... OBJ NEXT ITER DONE LREF* |
| 3643 | }; |
| 3644 | if (!wrapWithDestructuringTryNote(tryNoteDepth, emitLHSRef)) { |
| 3645 | return false; |
| 3646 | } |
| 3647 | } |
| 3648 | |
| 3649 | // Number of stack slots emitted for the LHS reference. |
| 3650 | size_t emitted = lref.numReferenceSlots(); |
| 3651 | |
| 3652 | // Pick the DONE value to the top of the stack. |
| 3653 | if (emitted) { |
| 3654 | if (!emitPickN(emitted)) { |
| 3655 | // [stack] ... OBJ NEXT ITER LREF* DONE |
| 3656 | return false; |
| 3657 | } |
| 3658 | } |
| 3659 | |
| 3660 | if (isFirst) { |
| 3661 | // If this element is the first, DONE is always FALSE, so pop it. |
| 3662 | // |
| 3663 | // Non-first elements should emit if-else depending on the |
| 3664 | // member pattern, below. |
| 3665 | if (!emit1(JSOp::Pop)) { |
| 3666 | // [stack] ... OBJ NEXT ITER LREF* |
| 3667 | return false; |
| 3668 | } |
| 3669 | } |
| 3670 | |
| 3671 | if (member->isKind(ParseNodeKind::Spread)) { |
| 3672 | InternalIfEmitter ifThenElse(this); |
| 3673 | if (!isFirst) { |
| 3674 | // If spread is not the first element of the pattern, |
| 3675 | // iterator can already be completed. |
| 3676 | // [stack] ... OBJ NEXT ITER LREF* DONE |
| 3677 | |
| 3678 | if (!ifThenElse.emitThenElse()) { |
| 3679 | // [stack] ... OBJ NEXT ITER LREF* |
| 3680 | return false; |
| 3681 | } |
| 3682 | |
| 3683 | if (!emitUint32Operand(JSOp::NewArray, 0)) { |
| 3684 | // [stack] ... OBJ NEXT ITER LREF* ARRAY |
| 3685 | return false; |
| 3686 | } |
| 3687 | if (!ifThenElse.emitElse()) { |
| 3688 | // [stack] ... OBJ NEXT ITER LREF* |
| 3689 | return false; |
| 3690 | } |
| 3691 | } |
| 3692 | |
| 3693 | // If iterator is not completed, create a new array with the rest |
| 3694 | // of the iterator. |
| 3695 | if (!emitDupAt(emitted + 1, 2)) { |
| 3696 | // [stack] ... OBJ NEXT ITER LREF* NEXT ITER |
| 3697 | return false; |
| 3698 | } |
| 3699 | if (!emitUint32Operand(JSOp::NewArray, 0)) { |
| 3700 | // [stack] ... OBJ NEXT ITER LREF* NEXT ITER ARRAY |
| 3701 | return false; |
| 3702 | } |
| 3703 | if (!emitNumberOp(0)) { |
| 3704 | // [stack] ... OBJ NEXT ITER LREF* NEXT ITER ARRAY INDEX |
| 3705 | return false; |
| 3706 | } |
| 3707 | if (!emitSpread(SelfHostedIter::Deny)) { |
| 3708 | // [stack] ... OBJ NEXT ITER LREF* ARRAY INDEX |
| 3709 | return false; |
| 3710 | } |
| 3711 | if (!emit1(JSOp::Pop)) { |
| 3712 | // [stack] ... OBJ NEXT ITER LREF* ARRAY |
| 3713 | return false; |
| 3714 | } |
| 3715 | |
| 3716 | if (!isFirst) { |
| 3717 | if (!ifThenElse.emitEnd()) { |
| 3718 | return false; |
| 3719 | } |
| 3720 | MOZ_ASSERT(ifThenElse.pushed() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(ifThenElse.pushed() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(ifThenElse.pushed() == 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("ifThenElse.pushed() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3720); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ifThenElse.pushed() == 1" ")"); do { MOZ_CrashSequence(__null, 3720); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3721 | } |
| 3722 | |
| 3723 | // At this point the iterator is done. Unpick a TRUE value for DONE above |
| 3724 | // ITER. |
| 3725 | if (!emit1(JSOp::True)) { |
| 3726 | // [stack] ... OBJ NEXT ITER LREF* ARRAY TRUE |
| 3727 | return false; |
| 3728 | } |
| 3729 | if (!emitUnpickN(emitted + 1)) { |
| 3730 | // [stack] ... OBJ NEXT ITER TRUE LREF* ARRAY |
| 3731 | return false; |
| 3732 | } |
| 3733 | |
| 3734 | auto emitAssignment = [lhsPattern, flav, &lref](BytecodeEmitter* bce) { |
| 3735 | return bce->emitSetOrInitializeDestructuring(lhsPattern, flav, lref); |
| 3736 | // [stack] ... OBJ NEXT ITER TRUE |
| 3737 | }; |
| 3738 | if (!wrapWithDestructuringTryNote(tryNoteDepth, emitAssignment)) { |
| 3739 | return false; |
| 3740 | } |
| 3741 | |
| 3742 | MOZ_ASSERT(!hasNext)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!hasNext)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!hasNext))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!hasNext", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3742); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!hasNext" ")" ); do { MOZ_CrashSequence(__null, 3742); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3743 | break; |
| 3744 | } |
| 3745 | |
| 3746 | InternalIfEmitter ifAlreadyDone(this); |
| 3747 | if (!isFirst) { |
| 3748 | // [stack] ... OBJ NEXT ITER LREF* DONE |
| 3749 | |
| 3750 | if (!ifAlreadyDone.emitThenElse()) { |
| 3751 | // [stack] ... OBJ NEXT ITER LREF* |
| 3752 | return false; |
| 3753 | } |
| 3754 | |
| 3755 | if (!emit1(JSOp::Undefined)) { |
| 3756 | // [stack] ... OBJ NEXT ITER LREF* UNDEF |
| 3757 | return false; |
| 3758 | } |
| 3759 | if (!emit1(JSOp::NopDestructuring)) { |
| 3760 | // [stack] ... OBJ NEXT ITER LREF* UNDEF |
| 3761 | return false; |
| 3762 | } |
| 3763 | |
| 3764 | // The iterator is done. Unpick a TRUE value for DONE above ITER. |
| 3765 | if (!emit1(JSOp::True)) { |
| 3766 | // [stack] ... OBJ NEXT ITER LREF* UNDEF TRUE |
| 3767 | return false; |
| 3768 | } |
| 3769 | if (!emitUnpickN(emitted + 1)) { |
| 3770 | // [stack] ... OBJ NEXT ITER TRUE LREF* UNDEF |
| 3771 | return false; |
| 3772 | } |
| 3773 | |
| 3774 | if (!ifAlreadyDone.emitElse()) { |
| 3775 | // [stack] ... OBJ NEXT ITER LREF* |
| 3776 | return false; |
| 3777 | } |
| 3778 | } |
| 3779 | |
| 3780 | if (!emitDupAt(emitted + 1, 2)) { |
| 3781 | // [stack] ... OBJ NEXT ITER LREF* NEXT |
| 3782 | return false; |
| 3783 | } |
| 3784 | if (!emitIteratorNext(Some(pattern->pn_pos.begin), IteratorKind::Sync, |
| 3785 | selfHostedIter)) { |
| 3786 | // [stack] ... OBJ NEXT ITER LREF* RESULT |
| 3787 | return false; |
| 3788 | } |
| 3789 | if (!emit1(JSOp::Dup)) { |
| 3790 | // [stack] ... OBJ NEXT ITER LREF* RESULT RESULT |
| 3791 | return false; |
| 3792 | } |
| 3793 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::done())) { |
| 3794 | // [stack] ... OBJ NEXT ITER LREF* RESULT DONE |
| 3795 | return false; |
| 3796 | } |
| 3797 | |
| 3798 | if (!emit1(JSOp::Dup)) { |
| 3799 | // [stack] ... OBJ NEXT ITER LREF* RESULT DONE DONE |
| 3800 | return false; |
| 3801 | } |
| 3802 | if (!emitUnpickN(emitted + 2)) { |
| 3803 | // [stack] ... OBJ NEXT ITER DONE LREF* RESULT DONE |
| 3804 | return false; |
| 3805 | } |
| 3806 | |
| 3807 | InternalIfEmitter ifDone(this); |
| 3808 | if (!ifDone.emitThenElse()) { |
| 3809 | // [stack] ... OBJ NEXT ITER DONE LREF* RESULT |
| 3810 | return false; |
| 3811 | } |
| 3812 | |
| 3813 | if (!emit1(JSOp::Pop)) { |
| 3814 | // [stack] ... OBJ NEXT ITER DONE LREF* |
| 3815 | return false; |
| 3816 | } |
| 3817 | if (!emit1(JSOp::Undefined)) { |
| 3818 | // [stack] ... OBJ NEXT ITER DONE LREF* UNDEF |
| 3819 | return false; |
| 3820 | } |
| 3821 | if (!emit1(JSOp::NopDestructuring)) { |
| 3822 | // [stack] ... OBJ NEXT ITER DONE LREF* UNDEF |
| 3823 | return false; |
| 3824 | } |
| 3825 | |
| 3826 | if (!ifDone.emitElse()) { |
| 3827 | // [stack] ... OBJ NEXT ITER DONE LREF* RESULT |
| 3828 | return false; |
| 3829 | } |
| 3830 | |
| 3831 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::value())) { |
| 3832 | // [stack] ... OBJ NEXT ITER DONE LREF* VALUE |
| 3833 | return false; |
| 3834 | } |
| 3835 | |
| 3836 | if (!ifDone.emitEnd()) { |
| 3837 | return false; |
| 3838 | } |
| 3839 | MOZ_ASSERT(ifDone.pushed() == 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(ifDone.pushed() == 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(ifDone.pushed() == 0))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("ifDone.pushed() == 0" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3839); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ifDone.pushed() == 0" ")"); do { MOZ_CrashSequence(__null, 3839); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3840 | |
| 3841 | if (!isFirst) { |
| 3842 | if (!ifAlreadyDone.emitEnd()) { |
| 3843 | return false; |
| 3844 | } |
| 3845 | MOZ_ASSERT(ifAlreadyDone.pushed() == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(ifAlreadyDone.pushed() == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(ifAlreadyDone.pushed() == 2) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("ifAlreadyDone.pushed() == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3845); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ifAlreadyDone.pushed() == 2" ")"); do { MOZ_CrashSequence(__null, 3845); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3846 | } |
| 3847 | |
| 3848 | if (pndefault) { |
| 3849 | auto emitDefault = [pndefault, lhsPattern](BytecodeEmitter* bce) { |
| 3850 | return bce->emitDefault(pndefault, lhsPattern); |
| 3851 | // [stack] ... OBJ NEXT ITER DONE LREF* VALUE |
| 3852 | }; |
| 3853 | |
| 3854 | if (!wrapWithDestructuringTryNote(tryNoteDepth, emitDefault)) { |
| 3855 | return false; |
| 3856 | } |
| 3857 | } |
| 3858 | |
| 3859 | if (!isElision) { |
| 3860 | auto emitAssignment = [lhsPattern, flav, &lref](BytecodeEmitter* bce) { |
| 3861 | return bce->emitSetOrInitializeDestructuring(lhsPattern, flav, lref); |
| 3862 | // [stack] ... OBJ NEXT ITER DONE |
| 3863 | }; |
| 3864 | |
| 3865 | if (!wrapWithDestructuringTryNote(tryNoteDepth, emitAssignment)) { |
| 3866 | return false; |
| 3867 | } |
| 3868 | } else { |
| 3869 | if (!emit1(JSOp::Pop)) { |
| 3870 | // [stack] ... OBJ NEXT ITER DONE |
| 3871 | return false; |
| 3872 | } |
| 3873 | } |
| 3874 | } |
| 3875 | |
| 3876 | // The last DONE value is on top of the stack. If not DONE, call |
| 3877 | // IteratorClose. |
| 3878 | // [stack] ... OBJ NEXT ITER DONE |
| 3879 | if (!control.emitEnd(this)) { |
| 3880 | // [stack] ... OBJ |
| 3881 | return false; |
| 3882 | } |
| 3883 | |
| 3884 | if (ifArrayOptimizable.isSome()) { |
| 3885 | if (!ifArrayOptimizable->emitEnd()) { |
| 3886 | // [stack] OBJ |
| 3887 | return false; |
| 3888 | } |
| 3889 | } |
| 3890 | |
| 3891 | return true; |
| 3892 | } |
| 3893 | |
| 3894 | bool BytecodeEmitter::emitComputedPropertyName(UnaryNode* computedPropName) { |
| 3895 | MOZ_ASSERT(computedPropName->isKind(ParseNodeKind::ComputedName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(computedPropName->isKind(ParseNodeKind::ComputedName ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(computedPropName->isKind(ParseNodeKind::ComputedName )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("computedPropName->isKind(ParseNodeKind::ComputedName)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3895); AnnotateMozCrashReason("MOZ_ASSERT" "(" "computedPropName->isKind(ParseNodeKind::ComputedName)" ")"); do { MOZ_CrashSequence(__null, 3895); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3896 | return emitTree(computedPropName->kid()) && emit1(JSOp::ToPropertyKey); |
| 3897 | } |
| 3898 | |
| 3899 | bool BytecodeEmitter::emitDestructuringOpsObject(ListNode* pattern, |
| 3900 | DestructuringFlavor flav) { |
| 3901 | MOZ_ASSERT(pattern->isKind(ParseNodeKind::ObjectExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pattern->isKind(ParseNodeKind::ObjectExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(pattern->isKind(ParseNodeKind::ObjectExpr)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("pattern->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3901); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pattern->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 3901); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3902 | |
| 3903 | // [stack] ... RHS |
| 3904 | MOZ_ASSERT(bytecodeSection().stackDepth() > 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() > 0)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(bytecodeSection().stackDepth() > 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() > 0" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3904); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() > 0" ")"); do { MOZ_CrashSequence(__null, 3904); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3905 | |
| 3906 | if (!emit1(JSOp::CheckObjCoercible)) { |
| 3907 | // [stack] ... RHS |
| 3908 | return false; |
| 3909 | } |
| 3910 | |
| 3911 | // To understand why we chose '4', please see the discussion on Bug 1948959. |
| 3912 | const uint8_t estimatedRestSize = 4; |
| 3913 | |
| 3914 | bool needsRestPropertyExcludedSet = |
| 3915 | pattern->count() > 1 && pattern->last()->isKind(ParseNodeKind::Spread); |
| 3916 | if (needsRestPropertyExcludedSet) { |
| 3917 | if (!emitDestructuringObjRestExclusionSet(pattern, estimatedRestSize)) { |
| 3918 | // [stack] ... RHS SET |
| 3919 | return false; |
| 3920 | } |
| 3921 | |
| 3922 | if (!emit1(JSOp::Swap)) { |
| 3923 | // [stack] ... SET RHS |
| 3924 | return false; |
| 3925 | } |
| 3926 | } |
| 3927 | |
| 3928 | for (ParseNode* member : pattern->contents()) { |
| 3929 | ParseNode* subpattern; |
| 3930 | bool hasKeyOnStack = false; |
| 3931 | if (member->isKind(ParseNodeKind::MutateProto) || |
| 3932 | member->isKind(ParseNodeKind::Spread)) { |
| 3933 | subpattern = member->as<UnaryNode>().kid(); |
| 3934 | |
| 3935 | MOZ_ASSERT_IF(member->isKind(ParseNodeKind::Spread),do { if (member->isKind(ParseNodeKind::Spread)) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(!subpattern ->isKind(ParseNodeKind::AssignExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!subpattern->isKind(ParseNodeKind ::AssignExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!subpattern->isKind(ParseNodeKind::AssignExpr)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3936); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!subpattern->isKind(ParseNodeKind::AssignExpr)" ")"); do { MOZ_CrashSequence(__null, 3936); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 3936 | !subpattern->isKind(ParseNodeKind::AssignExpr))do { if (member->isKind(ParseNodeKind::Spread)) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(!subpattern ->isKind(ParseNodeKind::AssignExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!subpattern->isKind(ParseNodeKind ::AssignExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!subpattern->isKind(ParseNodeKind::AssignExpr)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 3936); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!subpattern->isKind(ParseNodeKind::AssignExpr)" ")"); do { MOZ_CrashSequence(__null, 3936); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 3937 | } else { |
| 3938 | MOZ_ASSERT(member->isKind(ParseNodeKind::PropertyDefinition) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(member->isKind(ParseNodeKind::PropertyDefinition) || member ->isKind(ParseNodeKind::Shorthand)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3939); AnnotateMozCrashReason("MOZ_ASSERT" "(" "member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand)" ")"); do { MOZ_CrashSequence(__null, 3939); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 3939 | member->isKind(ParseNodeKind::Shorthand))do { static_assert( mozilla::detail::AssertionConditionType< decltype(member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(member->isKind(ParseNodeKind::PropertyDefinition) || member ->isKind(ParseNodeKind::Shorthand)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 3939); AnnotateMozCrashReason("MOZ_ASSERT" "(" "member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand)" ")"); do { MOZ_CrashSequence(__null, 3939); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 3940 | subpattern = member->as<BinaryNode>().right(); |
| 3941 | |
| 3942 | // Computed property names are evaluated before the subpattern. |
| 3943 | ParseNode* key = member->as<BinaryNode>().left(); |
| 3944 | if (key->isKind(ParseNodeKind::ComputedName)) { |
| 3945 | if (!emitComputedPropertyName(&key->as<UnaryNode>())) { |
| 3946 | // [stack] ... SET? RHS KEY |
| 3947 | return false; |
| 3948 | } |
| 3949 | hasKeyOnStack = true; |
| 3950 | } |
| 3951 | } |
| 3952 | |
| 3953 | ParseNode* lhs = subpattern; |
| 3954 | ParseNode* pndefault = nullptr; |
| 3955 | if (subpattern->isKind(ParseNodeKind::AssignExpr)) { |
| 3956 | lhs = subpattern->as<AssignmentNode>().left(); |
| 3957 | pndefault = subpattern->as<AssignmentNode>().right(); |
| 3958 | } |
| 3959 | |
| 3960 | // Spec requires LHS reference to be evaluated first. |
| 3961 | DestructuringLHSRef lref; |
| 3962 | if (!emitDestructuringLHSRef(lhs, flav, lref)) { |
| 3963 | // [stack] ... SET? RHS KEY? LREF* |
| 3964 | return false; |
| 3965 | } |
| 3966 | |
| 3967 | // Number of stack slots emitted for the LHS reference. |
| 3968 | size_t emitted = lref.numReferenceSlots(); |
| 3969 | |
| 3970 | // Duplicate the value being destructured to use as a reference base. |
| 3971 | if (!emitDupAt(emitted + hasKeyOnStack)) { |
| 3972 | // [stack] ... SET? RHS KEY? LREF* RHS |
| 3973 | return false; |
| 3974 | } |
| 3975 | |
| 3976 | if (member->isKind(ParseNodeKind::Spread)) { |
| 3977 | if (!updateSourceCoordNotes(member->pn_pos.begin)) { |
| 3978 | return false; |
| 3979 | } |
| 3980 | |
| 3981 | if (!emit2(JSOp::NewInit, estimatedRestSize)) { |
| 3982 | // [stack] ... SET? RHS LREF* RHS TARGET |
| 3983 | return false; |
| 3984 | } |
| 3985 | if (!emit1(JSOp::Dup)) { |
| 3986 | // [stack] ... SET? RHS LREF* RHS TARGET TARGET |
| 3987 | return false; |
| 3988 | } |
| 3989 | if (!emit2(JSOp::Pick, 2)) { |
| 3990 | // [stack] ... SET? RHS LREF* TARGET TARGET RHS |
| 3991 | return false; |
| 3992 | } |
| 3993 | |
| 3994 | if (needsRestPropertyExcludedSet) { |
| 3995 | if (!emit2(JSOp::Pick, emitted + 4)) { |
| 3996 | // [stack] ... RHS LREF* TARGET TARGET RHS SET |
| 3997 | return false; |
| 3998 | } |
| 3999 | } |
| 4000 | |
| 4001 | CopyOption option = needsRestPropertyExcludedSet ? CopyOption::Filtered |
| 4002 | : CopyOption::Unfiltered; |
| 4003 | if (!emitCopyDataProperties(option)) { |
| 4004 | // [stack] ... RHS LREF* TARGET |
| 4005 | return false; |
| 4006 | } |
| 4007 | |
| 4008 | // Destructure TARGET per this member's lhs. |
| 4009 | if (!emitSetOrInitializeDestructuring(lhs, flav, lref)) { |
| 4010 | // [stack] ... RHS |
| 4011 | return false; |
| 4012 | } |
| 4013 | |
| 4014 | MOZ_ASSERT(member == pattern->last(), "Rest property is always last")do { static_assert( mozilla::detail::AssertionConditionType< decltype(member == pattern->last())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(member == pattern->last() ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "member == pattern->last()" " (" "Rest property is always last" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4014 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "member == pattern->last()" ") (" "Rest property is always last" ")"); do { MOZ_CrashSequence (__null, 4014); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4015 | break; |
| 4016 | } |
| 4017 | |
| 4018 | // Now push the property value currently being matched, which is the value |
| 4019 | // of the current property name "label" on the left of a colon in the object |
| 4020 | // initialiser. |
| 4021 | if (member->isKind(ParseNodeKind::MutateProto)) { |
| 4022 | if (!emitAtomOp(JSOp::GetProp, |
| 4023 | TaggedParserAtomIndex::WellKnown::proto_())) { |
| 4024 | // [stack] ... SET? RHS LREF* PROP |
| 4025 | return false; |
| 4026 | } |
| 4027 | } else { |
| 4028 | MOZ_ASSERT(member->isKind(ParseNodeKind::PropertyDefinition) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(member->isKind(ParseNodeKind::PropertyDefinition) || member ->isKind(ParseNodeKind::Shorthand)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4029); AnnotateMozCrashReason("MOZ_ASSERT" "(" "member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand)" ")"); do { MOZ_CrashSequence(__null, 4029); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 4029 | member->isKind(ParseNodeKind::Shorthand))do { static_assert( mozilla::detail::AssertionConditionType< decltype(member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(member->isKind(ParseNodeKind::PropertyDefinition) || member ->isKind(ParseNodeKind::Shorthand)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4029); AnnotateMozCrashReason("MOZ_ASSERT" "(" "member->isKind(ParseNodeKind::PropertyDefinition) || member->isKind(ParseNodeKind::Shorthand)" ")"); do { MOZ_CrashSequence(__null, 4029); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4030 | |
| 4031 | ParseNode* key = member->as<BinaryNode>().left(); |
| 4032 | if (key->isKind(ParseNodeKind::ObjectPropertyName) || |
| 4033 | key->isKind(ParseNodeKind::StringExpr)) { |
| 4034 | if (!emitAtomOp(JSOp::GetProp, key->as<NameNode>().atom())) { |
| 4035 | // [stack] ... SET? RHS LREF* PROP |
| 4036 | return false; |
| 4037 | } |
| 4038 | } else { |
| 4039 | if (key->isKind(ParseNodeKind::NumberExpr)) { |
| 4040 | if (!emitNumberOp(key->as<NumericLiteral>().value())) { |
| 4041 | // [stack]... SET? RHS LREF* RHS KEY |
| 4042 | return false; |
| 4043 | } |
| 4044 | } else { |
| 4045 | // Otherwise this is a computed property name. BigInt keys are parsed |
| 4046 | // as (synthetic) computed property names, too. |
| 4047 | MOZ_ASSERT(key->isKind(ParseNodeKind::ComputedName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::ComputedName))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(key->isKind(ParseNodeKind::ComputedName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::ComputedName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4047); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::ComputedName)" ")"); do { MOZ_CrashSequence(__null, 4047); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4048 | MOZ_ASSERT(hasKeyOnStack)do { static_assert( mozilla::detail::AssertionConditionType< decltype(hasKeyOnStack)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(hasKeyOnStack))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("hasKeyOnStack", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4048); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "hasKeyOnStack" ")"); do { MOZ_CrashSequence (__null, 4048); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4049 | |
| 4050 | if (!emit2(JSOp::Pick, emitted + 1)) { |
| 4051 | // [stack] ... SET? RHS LREF* RHS KEY |
| 4052 | return false; |
| 4053 | } |
| 4054 | |
| 4055 | // Add the computed property key to the exclusion set. |
| 4056 | if (needsRestPropertyExcludedSet) { |
| 4057 | if (!emitDupAt(emitted + 3)) { |
| 4058 | // [stack] ... SET RHS LREF* RHS KEY SET |
| 4059 | return false; |
| 4060 | } |
| 4061 | if (!emitDupAt(1)) { |
| 4062 | // [stack] ... SET RHS LREF* RHS KEY SET KEY |
| 4063 | return false; |
| 4064 | } |
| 4065 | if (!emit1(JSOp::Undefined)) { |
| 4066 | // [stack] ... SET RHS LREF* RHS KEY SET KEY UNDEFINED |
| 4067 | return false; |
| 4068 | } |
| 4069 | if (!emit1(JSOp::InitElem)) { |
| 4070 | // [stack] ... SET RHS LREF* RHS KEY SET |
| 4071 | return false; |
| 4072 | } |
| 4073 | if (!emit1(JSOp::Pop)) { |
| 4074 | // [stack] ... SET RHS LREF* RHS KEY |
| 4075 | return false; |
| 4076 | } |
| 4077 | } |
| 4078 | } |
| 4079 | |
| 4080 | // Get the property value. |
| 4081 | if (!emitElemOpBase(JSOp::GetElem)) { |
| 4082 | // [stack] ... SET? RHS LREF* PROP |
| 4083 | return false; |
| 4084 | } |
| 4085 | } |
| 4086 | } |
| 4087 | |
| 4088 | if (pndefault) { |
| 4089 | if (!emitDefault(pndefault, lhs)) { |
| 4090 | // [stack] ... SET? RHS LREF* VALUE |
| 4091 | return false; |
| 4092 | } |
| 4093 | } |
| 4094 | |
| 4095 | // Destructure PROP per this member's lhs. |
| 4096 | if (!emitSetOrInitializeDestructuring(lhs, flav, lref)) { |
| 4097 | // [stack] ... SET? RHS |
| 4098 | return false; |
| 4099 | } |
| 4100 | } |
| 4101 | |
| 4102 | return true; |
| 4103 | } |
| 4104 | |
| 4105 | static bool IsDestructuringRestExclusionSetObjLiteralCompatible( |
| 4106 | ListNode* pattern) { |
| 4107 | uint32_t propCount = 0; |
| 4108 | for (ParseNode* member : pattern->contents()) { |
| 4109 | if (member->isKind(ParseNodeKind::Spread)) { |
| 4110 | MOZ_ASSERT(!member->pn_next, "unexpected trailing element after spread")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!member->pn_next)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!member->pn_next))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!member->pn_next" " (" "unexpected trailing element after spread" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4110); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!member->pn_next" ") (" "unexpected trailing element after spread" ")"); do { MOZ_CrashSequence (__null, 4110); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4111 | break; |
| 4112 | } |
| 4113 | |
| 4114 | propCount++; |
| 4115 | |
| 4116 | if (member->isKind(ParseNodeKind::MutateProto)) { |
| 4117 | continue; |
| 4118 | } |
| 4119 | |
| 4120 | ParseNode* key = member->as<BinaryNode>().left(); |
| 4121 | if (key->isKind(ParseNodeKind::ObjectPropertyName) || |
| 4122 | key->isKind(ParseNodeKind::StringExpr)) { |
| 4123 | continue; |
| 4124 | } |
| 4125 | |
| 4126 | // Number and BigInt keys aren't yet supported. Computed property names need |
| 4127 | // to be added dynamically. |
| 4128 | MOZ_ASSERT(key->isKind(ParseNodeKind::NumberExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::NumberExpr) || key-> isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind ::ComputedName))>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(key->isKind(ParseNodeKind:: NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key ->isKind(ParseNodeKind::ComputedName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind::ComputedName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4130); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind::ComputedName)" ")"); do { MOZ_CrashSequence(__null, 4130); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 4129 | key->isKind(ParseNodeKind::BigIntExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::NumberExpr) || key-> isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind ::ComputedName))>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(key->isKind(ParseNodeKind:: NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key ->isKind(ParseNodeKind::ComputedName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind::ComputedName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4130); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind::ComputedName)" ")"); do { MOZ_CrashSequence(__null, 4130); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 4130 | key->isKind(ParseNodeKind::ComputedName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::NumberExpr) || key-> isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind ::ComputedName))>::isValid, "invalid assertion condition") ; if ((__builtin_expect(!!(!(!!(key->isKind(ParseNodeKind:: NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key ->isKind(ParseNodeKind::ComputedName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind::ComputedName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4130); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::NumberExpr) || key->isKind(ParseNodeKind::BigIntExpr) || key->isKind(ParseNodeKind::ComputedName)" ")"); do { MOZ_CrashSequence(__null, 4130); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4131 | return false; |
| 4132 | } |
| 4133 | |
| 4134 | if (propCount > SharedPropMap::MaxPropsForNonDictionary) { |
| 4135 | // JSOp::NewObject cannot accept dictionary-mode objects. |
| 4136 | return false; |
| 4137 | } |
| 4138 | |
| 4139 | return true; |
| 4140 | } |
| 4141 | |
| 4142 | bool BytecodeEmitter::emitDestructuringObjRestExclusionSet( |
| 4143 | ListNode* pattern, uint8_t estimatedRestSize) { |
| 4144 | MOZ_ASSERT(pattern->isKind(ParseNodeKind::ObjectExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pattern->isKind(ParseNodeKind::ObjectExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(pattern->isKind(ParseNodeKind::ObjectExpr)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("pattern->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4144); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pattern->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 4144); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4145 | MOZ_ASSERT(pattern->last()->isKind(ParseNodeKind::Spread))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pattern->last()->isKind(ParseNodeKind::Spread) )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(pattern->last()->isKind(ParseNodeKind::Spread) ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pattern->last()->isKind(ParseNodeKind::Spread)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4145); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pattern->last()->isKind(ParseNodeKind::Spread)" ")"); do { MOZ_CrashSequence(__null, 4145); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4146 | |
| 4147 | // See if we can use ObjLiteral to construct the exclusion set object. |
| 4148 | if (IsDestructuringRestExclusionSetObjLiteralCompatible(pattern)) { |
| 4149 | if (!emitDestructuringRestExclusionSetObjLiteral(pattern)) { |
| 4150 | // [stack] OBJ |
| 4151 | return false; |
| 4152 | } |
| 4153 | } else { |
| 4154 | // Take the slow but sure way and start off with a blank object. |
| 4155 | if (!emit2(JSOp::NewInit, estimatedRestSize)) { |
| 4156 | // [stack] OBJ |
| 4157 | return false; |
| 4158 | } |
| 4159 | } |
| 4160 | |
| 4161 | for (ParseNode* member : pattern->contents()) { |
| 4162 | if (member->isKind(ParseNodeKind::Spread)) { |
| 4163 | MOZ_ASSERT(!member->pn_next, "unexpected trailing element after spread")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!member->pn_next)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!member->pn_next))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!member->pn_next" " (" "unexpected trailing element after spread" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4163); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!member->pn_next" ") (" "unexpected trailing element after spread" ")"); do { MOZ_CrashSequence (__null, 4163); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4164 | break; |
| 4165 | } |
| 4166 | |
| 4167 | TaggedParserAtomIndex pnatom; |
| 4168 | if (member->isKind(ParseNodeKind::MutateProto)) { |
| 4169 | pnatom = TaggedParserAtomIndex::WellKnown::proto_(); |
| 4170 | } else { |
| 4171 | ParseNode* key = member->as<BinaryNode>().left(); |
| 4172 | if (key->isKind(ParseNodeKind::ObjectPropertyName) || |
| 4173 | key->isKind(ParseNodeKind::StringExpr)) { |
| 4174 | pnatom = key->as<NameNode>().atom(); |
| 4175 | } else if (key->isKind(ParseNodeKind::NumberExpr)) { |
| 4176 | if (!emitNumberOp(key->as<NumericLiteral>().value())) { |
| 4177 | return false; |
| 4178 | } |
| 4179 | } else { |
| 4180 | // Otherwise this is a computed property name which needs to be added |
| 4181 | // dynamically. BigInt keys are parsed as (synthetic) computed property |
| 4182 | // names, too. |
| 4183 | MOZ_ASSERT(key->isKind(ParseNodeKind::ComputedName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::ComputedName))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(key->isKind(ParseNodeKind::ComputedName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::ComputedName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4183); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::ComputedName)" ")"); do { MOZ_CrashSequence(__null, 4183); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4184 | continue; |
| 4185 | } |
| 4186 | } |
| 4187 | |
| 4188 | // Initialize elements with |undefined|. |
| 4189 | if (!emit1(JSOp::Undefined)) { |
| 4190 | return false; |
| 4191 | } |
| 4192 | |
| 4193 | if (!pnatom) { |
| 4194 | if (!emit1(JSOp::InitElem)) { |
| 4195 | return false; |
| 4196 | } |
| 4197 | } else { |
| 4198 | if (!emitAtomOp(JSOp::InitProp, pnatom)) { |
| 4199 | return false; |
| 4200 | } |
| 4201 | } |
| 4202 | } |
| 4203 | |
| 4204 | return true; |
| 4205 | } |
| 4206 | |
| 4207 | bool BytecodeEmitter::emitDestructuringOps(ListNode* pattern, |
| 4208 | DestructuringFlavor flav, |
| 4209 | SelfHostedIter selfHostedIter) { |
| 4210 | if (pattern->isKind(ParseNodeKind::ArrayExpr)) { |
| 4211 | return emitDestructuringOpsArray(pattern, flav, selfHostedIter); |
| 4212 | } |
| 4213 | return emitDestructuringOpsObject(pattern, flav); |
| 4214 | } |
| 4215 | |
| 4216 | bool BytecodeEmitter::emitTemplateString(ListNode* templateString) { |
| 4217 | bool pushedString = false; |
| 4218 | |
| 4219 | for (ParseNode* item : templateString->contents()) { |
| 4220 | bool isString = (item->getKind() == ParseNodeKind::StringExpr || |
| 4221 | item->getKind() == ParseNodeKind::TemplateStringExpr); |
| 4222 | |
| 4223 | // Skip empty strings. These are very common: a template string like |
| 4224 | // `${a}${b}` has three empty strings and without this optimization |
| 4225 | // we'd emit four JSOp::Add operations instead of just one. |
| 4226 | if (isString && item->as<NameNode>().atom() == |
| 4227 | TaggedParserAtomIndex::WellKnown::empty()) { |
| 4228 | continue; |
| 4229 | } |
| 4230 | |
| 4231 | if (!isString) { |
| 4232 | // We update source notes before emitting the expression |
| 4233 | if (!updateSourceCoordNotes(item->pn_pos.begin)) { |
| 4234 | return false; |
| 4235 | } |
| 4236 | } |
| 4237 | |
| 4238 | if (!emitTree(item)) { |
| 4239 | return false; |
| 4240 | } |
| 4241 | |
| 4242 | if (!isString) { |
| 4243 | // We need to convert the expression to a string |
| 4244 | if (!emit1(JSOp::ToString)) { |
| 4245 | return false; |
| 4246 | } |
| 4247 | } |
| 4248 | |
| 4249 | if (pushedString) { |
| 4250 | // We've pushed two strings onto the stack. Add them together, leaving |
| 4251 | // just one. |
| 4252 | if (!emit1(JSOp::Add)) { |
| 4253 | return false; |
| 4254 | } |
| 4255 | } else { |
| 4256 | pushedString = true; |
| 4257 | } |
| 4258 | } |
| 4259 | |
| 4260 | if (!pushedString) { |
| 4261 | // All strings were empty, this can happen for something like `${""}`. |
| 4262 | // Just push an empty string. |
| 4263 | if (!emitStringOp(JSOp::String, |
| 4264 | TaggedParserAtomIndex::WellKnown::empty())) { |
| 4265 | return false; |
| 4266 | } |
| 4267 | } |
| 4268 | |
| 4269 | return true; |
| 4270 | } |
| 4271 | |
| 4272 | bool BytecodeEmitter::emitDeclarationList(ListNode* declList) { |
| 4273 | for (ParseNode* decl : declList->contents()) { |
| 4274 | ParseNode* pattern; |
| 4275 | ParseNode* initializer; |
| 4276 | if (decl->isKind(ParseNodeKind::Name)) { |
| 4277 | pattern = decl; |
| 4278 | initializer = nullptr; |
| 4279 | } else { |
| 4280 | AssignmentNode* assignNode = &decl->as<AssignmentNode>(); |
| 4281 | pattern = assignNode->left(); |
| 4282 | initializer = assignNode->right(); |
| 4283 | } |
| 4284 | |
| 4285 | if (pattern->isKind(ParseNodeKind::Name)) { |
| 4286 | // initializer can be null here. |
| 4287 | if (!emitSingleDeclaration(declList, &pattern->as<NameNode>(), |
| 4288 | initializer)) { |
| 4289 | return false; |
| 4290 | } |
| 4291 | } else { |
| 4292 | MOZ_ASSERT(pattern->isKind(ParseNodeKind::ArrayExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(pattern->isKind(ParseNodeKind::ArrayExpr) || pattern ->isKind(ParseNodeKind::ObjectExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pattern->isKind(ParseNodeKind ::ArrayExpr) || pattern->isKind(ParseNodeKind::ObjectExpr) ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pattern->isKind(ParseNodeKind::ArrayExpr) || pattern->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4293); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pattern->isKind(ParseNodeKind::ArrayExpr) || pattern->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 4293); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 4293 | pattern->isKind(ParseNodeKind::ObjectExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pattern->isKind(ParseNodeKind::ArrayExpr) || pattern ->isKind(ParseNodeKind::ObjectExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pattern->isKind(ParseNodeKind ::ArrayExpr) || pattern->isKind(ParseNodeKind::ObjectExpr) ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pattern->isKind(ParseNodeKind::ArrayExpr) || pattern->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4293); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pattern->isKind(ParseNodeKind::ArrayExpr) || pattern->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 4293); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4294 | MOZ_ASSERT(initializer != nullptr)do { static_assert( mozilla::detail::AssertionConditionType< decltype(initializer != nullptr)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(initializer != nullptr))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("initializer != nullptr" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4294); AnnotateMozCrashReason("MOZ_ASSERT" "(" "initializer != nullptr" ")"); do { MOZ_CrashSequence(__null, 4294); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4295 | |
| 4296 | if (!updateSourceCoordNotes(initializer->pn_pos.begin)) { |
| 4297 | return false; |
| 4298 | } |
| 4299 | if (!markStepBreakpoint()) { |
| 4300 | return false; |
| 4301 | } |
| 4302 | if (!emitTree(initializer)) { |
| 4303 | return false; |
| 4304 | } |
| 4305 | |
| 4306 | if (!emitDestructuringOps(&pattern->as<ListNode>(), |
| 4307 | DestructuringFlavor::Declaration, |
| 4308 | getSelfHostedIterFor(initializer))) { |
| 4309 | return false; |
| 4310 | } |
| 4311 | |
| 4312 | if (!emit1(JSOp::Pop)) { |
| 4313 | return false; |
| 4314 | } |
| 4315 | } |
| 4316 | } |
| 4317 | return true; |
| 4318 | } |
| 4319 | |
| 4320 | bool BytecodeEmitter::emitSingleDeclaration(ListNode* declList, NameNode* decl, |
| 4321 | ParseNode* initializer) { |
| 4322 | MOZ_ASSERT(decl->isKind(ParseNodeKind::Name))do { static_assert( mozilla::detail::AssertionConditionType< decltype(decl->isKind(ParseNodeKind::Name))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(decl->isKind(ParseNodeKind ::Name)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("decl->isKind(ParseNodeKind::Name)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4322); AnnotateMozCrashReason("MOZ_ASSERT" "(" "decl->isKind(ParseNodeKind::Name)" ")"); do { MOZ_CrashSequence(__null, 4322); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4323 | |
| 4324 | // Nothing to do for initializer-less 'var' declarations, as there's no TDZ. |
| 4325 | if (!initializer && declList->isKind(ParseNodeKind::VarStmt)) { |
| 4326 | return true; |
| 4327 | } |
| 4328 | |
| 4329 | auto nameAtom = decl->name(); |
| 4330 | NameOpEmitter noe(this, nameAtom, NameOpEmitter::Kind::Initialize); |
| 4331 | if (!noe.prepareForRhs()) { |
| 4332 | // [stack] ENV? |
| 4333 | return false; |
| 4334 | } |
| 4335 | if (!initializer) { |
| 4336 | // Lexical declarations are initialized to undefined without an |
| 4337 | // initializer. |
| 4338 | MOZ_ASSERT(declList->isKind(ParseNodeKind::LetDecl),do { static_assert( mozilla::detail::AssertionConditionType< decltype(declList->isKind(ParseNodeKind::LetDecl))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(declList->isKind(ParseNodeKind::LetDecl)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("declList->isKind(ParseNodeKind::LetDecl)" " (" "var declarations without initializers handled above, " "and const declarations must have initializers" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4340); AnnotateMozCrashReason("MOZ_ASSERT" "(" "declList->isKind(ParseNodeKind::LetDecl)" ") (" "var declarations without initializers handled above, " "and const declarations must have initializers" ")"); do { MOZ_CrashSequence (__null, 4340); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 4339 | "var declarations without initializers handled above, "do { static_assert( mozilla::detail::AssertionConditionType< decltype(declList->isKind(ParseNodeKind::LetDecl))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(declList->isKind(ParseNodeKind::LetDecl)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("declList->isKind(ParseNodeKind::LetDecl)" " (" "var declarations without initializers handled above, " "and const declarations must have initializers" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4340); AnnotateMozCrashReason("MOZ_ASSERT" "(" "declList->isKind(ParseNodeKind::LetDecl)" ") (" "var declarations without initializers handled above, " "and const declarations must have initializers" ")"); do { MOZ_CrashSequence (__null, 4340); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 4340 | "and const declarations must have initializers")do { static_assert( mozilla::detail::AssertionConditionType< decltype(declList->isKind(ParseNodeKind::LetDecl))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(declList->isKind(ParseNodeKind::LetDecl)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("declList->isKind(ParseNodeKind::LetDecl)" " (" "var declarations without initializers handled above, " "and const declarations must have initializers" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4340); AnnotateMozCrashReason("MOZ_ASSERT" "(" "declList->isKind(ParseNodeKind::LetDecl)" ") (" "var declarations without initializers handled above, " "and const declarations must have initializers" ")"); do { MOZ_CrashSequence (__null, 4340); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4341 | if (!emit1(JSOp::Undefined)) { |
| 4342 | // [stack] ENV? UNDEF |
| 4343 | return false; |
| 4344 | } |
| 4345 | } else { |
| 4346 | MOZ_ASSERT(initializer)do { static_assert( mozilla::detail::AssertionConditionType< decltype(initializer)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(initializer))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("initializer", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4346); AnnotateMozCrashReason("MOZ_ASSERT" "(" "initializer" ")"); do { MOZ_CrashSequence(__null, 4346); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4347 | |
| 4348 | if (!updateSourceCoordNotes(initializer->pn_pos.begin)) { |
| 4349 | return false; |
| 4350 | } |
| 4351 | if (!markStepBreakpoint()) { |
| 4352 | return false; |
| 4353 | } |
| 4354 | if (!emitInitializer(initializer, decl)) { |
| 4355 | // [stack] ENV? V |
| 4356 | return false; |
| 4357 | } |
| 4358 | } |
| 4359 | |
| 4360 | if (declList->isKind(ParseNodeKind::UsingDecl)) { |
| 4361 | if (!innermostEmitterScope()->prepareForDisposableAssignment( |
| 4362 | UsingHint::Sync)) { |
| 4363 | // [stack] ENV? V |
| 4364 | return false; |
| 4365 | } |
| 4366 | } else if (declList->isKind(ParseNodeKind::AwaitUsingDecl)) { |
| 4367 | if (!innermostEmitterScope()->prepareForDisposableAssignment( |
| 4368 | UsingHint::Async)) { |
| 4369 | // [stack] ENV? V |
| 4370 | return false; |
| 4371 | } |
| 4372 | } |
| 4373 | |
| 4374 | if (!noe.emitAssignment()) { |
| 4375 | // [stack] V |
| 4376 | return false; |
| 4377 | } |
| 4378 | |
| 4379 | if (!emit1(JSOp::Pop)) { |
| 4380 | // [stack] |
| 4381 | return false; |
| 4382 | } |
| 4383 | |
| 4384 | return true; |
| 4385 | } |
| 4386 | |
| 4387 | bool BytecodeEmitter::emitAssignmentRhs( |
| 4388 | ParseNode* rhs, TaggedParserAtomIndex anonFunctionName) { |
| 4389 | if (rhs->isDirectRHSAnonFunction()) { |
| 4390 | if (anonFunctionName) { |
| 4391 | return emitAnonymousFunctionWithName(rhs, anonFunctionName); |
| 4392 | } |
| 4393 | return emitAnonymousFunctionWithComputedName(rhs, FunctionPrefixKind::None); |
| 4394 | } |
| 4395 | return emitTree(rhs); |
| 4396 | } |
| 4397 | |
| 4398 | // The RHS value to assign is already on the stack, i.e., the next enumeration |
| 4399 | // value in a for-in or for-of loop. Offset is the location in the stack of the |
| 4400 | // already-emitted rhs. If we emitted a JSOp::BindUnqualifiedName or |
| 4401 | // JSOp::BindUnqualifiedGName, then the scope is on the top of the stack and we |
| 4402 | // need to dig one deeper to get the right RHS value. |
| 4403 | bool BytecodeEmitter::emitAssignmentRhs(uint8_t offset) { |
| 4404 | if (offset != 1) { |
| 4405 | return emitPickN(offset - 1); |
| 4406 | } |
| 4407 | |
| 4408 | return true; |
| 4409 | } |
| 4410 | |
| 4411 | static inline JSOp CompoundAssignmentParseNodeKindToJSOp(ParseNodeKind pnk) { |
| 4412 | switch (pnk) { |
| 4413 | case ParseNodeKind::InitExpr: |
| 4414 | return JSOp::Nop; |
| 4415 | case ParseNodeKind::AssignExpr: |
| 4416 | return JSOp::Nop; |
| 4417 | case ParseNodeKind::AddAssignExpr: |
| 4418 | return JSOp::Add; |
| 4419 | case ParseNodeKind::SubAssignExpr: |
| 4420 | return JSOp::Sub; |
| 4421 | case ParseNodeKind::BitOrAssignExpr: |
| 4422 | return JSOp::BitOr; |
| 4423 | case ParseNodeKind::BitXorAssignExpr: |
| 4424 | return JSOp::BitXor; |
| 4425 | case ParseNodeKind::BitAndAssignExpr: |
| 4426 | return JSOp::BitAnd; |
| 4427 | case ParseNodeKind::LshAssignExpr: |
| 4428 | return JSOp::Lsh; |
| 4429 | case ParseNodeKind::RshAssignExpr: |
| 4430 | return JSOp::Rsh; |
| 4431 | case ParseNodeKind::UrshAssignExpr: |
| 4432 | return JSOp::Ursh; |
| 4433 | case ParseNodeKind::MulAssignExpr: |
| 4434 | return JSOp::Mul; |
| 4435 | case ParseNodeKind::DivAssignExpr: |
| 4436 | return JSOp::Div; |
| 4437 | case ParseNodeKind::ModAssignExpr: |
| 4438 | return JSOp::Mod; |
| 4439 | case ParseNodeKind::PowAssignExpr: |
| 4440 | return JSOp::Pow; |
| 4441 | case ParseNodeKind::CoalesceAssignExpr: |
| 4442 | case ParseNodeKind::OrAssignExpr: |
| 4443 | case ParseNodeKind::AndAssignExpr: |
| 4444 | // Short-circuit assignment operators are handled elsewhere. |
| 4445 | [[fallthrough]]; |
| 4446 | default: |
| 4447 | MOZ_CRASH("unexpected compound assignment op")do { do { } while (false); MOZ_ReportCrash("" "unexpected compound assignment op" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4447); AnnotateMozCrashReason("MOZ_CRASH(" "unexpected compound assignment op" ")"); do { MOZ_CrashSequence(__null, 4447); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 4448 | } |
| 4449 | } |
| 4450 | |
| 4451 | bool BytecodeEmitter::emitAssignmentOrInit(ParseNodeKind kind, ParseNode* lhs, |
| 4452 | ParseNode* rhs) { |
| 4453 | JSOp compoundOp = CompoundAssignmentParseNodeKindToJSOp(kind); |
| 4454 | bool isCompound = compoundOp != JSOp::Nop; |
| 4455 | bool isInit = kind == ParseNodeKind::InitExpr; |
| 4456 | |
| 4457 | // We estimate the number of properties this could create |
| 4458 | // if used as constructor merely by counting this.foo = assignment |
| 4459 | // or init expressions; |
| 4460 | // |
| 4461 | // This currently doesn't handle this[x] = foo; |
| 4462 | if (isInit || kind == ParseNodeKind::AssignExpr) { |
| 4463 | if (lhs->isKind(ParseNodeKind::DotExpr)) { |
| 4464 | if (lhs->as<PropertyAccess>().expression().isKind( |
| 4465 | ParseNodeKind::ThisExpr)) { |
| 4466 | propertyAdditionEstimate++; |
| 4467 | } |
| 4468 | } |
| 4469 | } |
| 4470 | |
| 4471 | MOZ_ASSERT_IF(isInit, lhs->isKind(ParseNodeKind::DotExpr) ||do { if (isInit) { do { static_assert( mozilla::detail::AssertionConditionType <decltype(lhs->isKind(ParseNodeKind::DotExpr) || lhs-> isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind ::PrivateMemberExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(lhs->isKind(ParseNodeKind ::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs-> isKind(ParseNodeKind::PrivateMemberExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("lhs->isKind(ParseNodeKind::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind::PrivateMemberExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4473); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lhs->isKind(ParseNodeKind::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind::PrivateMemberExpr)" ")"); do { MOZ_CrashSequence(__null, 4473); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 4472 | lhs->isKind(ParseNodeKind::ElemExpr) ||do { if (isInit) { do { static_assert( mozilla::detail::AssertionConditionType <decltype(lhs->isKind(ParseNodeKind::DotExpr) || lhs-> isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind ::PrivateMemberExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(lhs->isKind(ParseNodeKind ::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs-> isKind(ParseNodeKind::PrivateMemberExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("lhs->isKind(ParseNodeKind::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind::PrivateMemberExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4473); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lhs->isKind(ParseNodeKind::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind::PrivateMemberExpr)" ")"); do { MOZ_CrashSequence(__null, 4473); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 4473 | lhs->isKind(ParseNodeKind::PrivateMemberExpr))do { if (isInit) { do { static_assert( mozilla::detail::AssertionConditionType <decltype(lhs->isKind(ParseNodeKind::DotExpr) || lhs-> isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind ::PrivateMemberExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(lhs->isKind(ParseNodeKind ::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs-> isKind(ParseNodeKind::PrivateMemberExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("lhs->isKind(ParseNodeKind::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind::PrivateMemberExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4473); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lhs->isKind(ParseNodeKind::DotExpr) || lhs->isKind(ParseNodeKind::ElemExpr) || lhs->isKind(ParseNodeKind::PrivateMemberExpr)" ")"); do { MOZ_CrashSequence(__null, 4473); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 4474 | |
| 4475 | // |name| is used within NameOpEmitter, so its lifetime must surpass |noe|. |
| 4476 | TaggedParserAtomIndex name; |
| 4477 | |
| 4478 | Maybe<NameOpEmitter> noe; |
| 4479 | Maybe<PropOpEmitter> poe; |
| 4480 | Maybe<ElemOpEmitter> eoe; |
| 4481 | Maybe<PrivateOpEmitter> xoe; |
| 4482 | |
| 4483 | // Deal with non-name assignments. |
| 4484 | uint8_t offset = 1; |
| 4485 | |
| 4486 | // Purpose of anonFunctionName: |
| 4487 | // |
| 4488 | // In normal name assignments (`f = function(){}`), an anonymous function gets |
| 4489 | // an inferred name based on the left-hand side name node. |
| 4490 | // |
| 4491 | // In normal property assignments (`obj.x = function(){}`), the anonymous |
| 4492 | // function does not have a computed name, and rhs->isDirectRHSAnonFunction() |
| 4493 | // will be false (and anonFunctionName will not be used). However, in field |
| 4494 | // initializers (`class C { x = function(){} }`), field initialization is |
| 4495 | // implemented via a property or elem assignment (where we are now), and |
| 4496 | // rhs->isDirectRHSAnonFunction() is set - so we'll assign the name of the |
| 4497 | // function. |
| 4498 | TaggedParserAtomIndex anonFunctionName; |
| 4499 | |
| 4500 | switch (lhs->getKind()) { |
| 4501 | case ParseNodeKind::Name: { |
| 4502 | name = lhs->as<NameNode>().name(); |
| 4503 | anonFunctionName = name; |
| 4504 | noe.emplace(this, name, |
| 4505 | isCompound ? NameOpEmitter::Kind::CompoundAssignment |
| 4506 | : NameOpEmitter::Kind::SimpleAssignment); |
| 4507 | break; |
| 4508 | } |
| 4509 | case ParseNodeKind::ArgumentsLength: |
| 4510 | case ParseNodeKind::DotExpr: { |
| 4511 | NonOptionalPropertyAccessBase* prop = |
| 4512 | &lhs->as<NonOptionalPropertyAccessBase>(); |
| 4513 | bool isSuper = prop->isSuper(); |
| 4514 | poe.emplace(this, |
| 4515 | isCompound ? PropOpEmitter::Kind::CompoundAssignment |
| 4516 | : isInit ? PropOpEmitter::Kind::PropInit |
| 4517 | : PropOpEmitter::Kind::SimpleAssignment, |
| 4518 | isSuper ? PropOpEmitter::ObjKind::Super |
| 4519 | : PropOpEmitter::ObjKind::Other); |
| 4520 | if (!poe->prepareForObj()) { |
| 4521 | return false; |
| 4522 | } |
| 4523 | anonFunctionName = prop->name(); |
| 4524 | if (isSuper) { |
| 4525 | UnaryNode* base = &prop->expression().as<UnaryNode>(); |
| 4526 | if (!emitGetThisForSuperBase(base)) { |
| 4527 | // [stack] THIS SUPERBASE |
| 4528 | return false; |
| 4529 | } |
| 4530 | // SUPERBASE is pushed onto THIS later in poe->emitGet below. |
| 4531 | offset += 2; |
| 4532 | } else { |
| 4533 | if (!emitTree(&prop->expression())) { |
| 4534 | // [stack] OBJ |
| 4535 | return false; |
| 4536 | } |
| 4537 | offset += 1; |
| 4538 | } |
| 4539 | break; |
| 4540 | } |
| 4541 | case ParseNodeKind::ElemExpr: { |
| 4542 | PropertyByValue* elem = &lhs->as<PropertyByValue>(); |
| 4543 | bool isSuper = elem->isSuper(); |
| 4544 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4544); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 4544); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4545 | eoe.emplace(this, |
| 4546 | isCompound ? ElemOpEmitter::Kind::CompoundAssignment |
| 4547 | : isInit ? ElemOpEmitter::Kind::PropInit |
| 4548 | : ElemOpEmitter::Kind::SimpleAssignment, |
| 4549 | isSuper ? ElemOpEmitter::ObjKind::Super |
| 4550 | : ElemOpEmitter::ObjKind::Other); |
| 4551 | if (!emitElemObjAndKey(elem, *eoe)) { |
| 4552 | // [stack] # if Super |
| 4553 | // [stack] THIS KEY |
| 4554 | // [stack] # otherwise |
| 4555 | // [stack] OBJ KEY |
| 4556 | return false; |
| 4557 | } |
| 4558 | if (isSuper) { |
| 4559 | // SUPERBASE is pushed onto KEY in eoe->emitGet below. |
| 4560 | offset += 3; |
| 4561 | } else { |
| 4562 | offset += 2; |
| 4563 | } |
| 4564 | break; |
| 4565 | } |
| 4566 | case ParseNodeKind::PrivateMemberExpr: { |
| 4567 | PrivateMemberAccess* privateExpr = &lhs->as<PrivateMemberAccess>(); |
| 4568 | xoe.emplace(this, |
| 4569 | isCompound ? PrivateOpEmitter::Kind::CompoundAssignment |
| 4570 | : isInit ? PrivateOpEmitter::Kind::PropInit |
| 4571 | : PrivateOpEmitter::Kind::SimpleAssignment, |
| 4572 | privateExpr->privateName().name()); |
| 4573 | if (!emitTree(&privateExpr->expression())) { |
| 4574 | // [stack] OBJ |
| 4575 | return false; |
| 4576 | } |
| 4577 | if (!xoe->emitReference()) { |
| 4578 | // [stack] OBJ KEY |
| 4579 | return false; |
| 4580 | } |
| 4581 | offset += xoe->numReferenceSlots(); |
| 4582 | break; |
| 4583 | } |
| 4584 | case ParseNodeKind::ArrayExpr: |
| 4585 | case ParseNodeKind::ObjectExpr: |
| 4586 | break; |
| 4587 | case ParseNodeKind::CallExpr: |
| 4588 | if (!emitTree(lhs)) { |
| 4589 | return false; |
| 4590 | } |
| 4591 | |
| 4592 | // Assignment to function calls is forbidden, but we have to make the |
| 4593 | // call first. Now we can throw. |
| 4594 | if (!emit2(JSOp::ThrowMsg, uint8_t(ThrowMsgKind::AssignToCall))) { |
| 4595 | return false; |
| 4596 | } |
| 4597 | |
| 4598 | // Rebalance the stack to placate stack-depth assertions. |
| 4599 | if (!emit1(JSOp::Pop)) { |
| 4600 | return false; |
| 4601 | } |
| 4602 | break; |
| 4603 | default: |
| 4604 | MOZ_ASSERT(0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(0)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("0", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4604 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "0" ")"); do { MOZ_CrashSequence (__null, 4604); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4605 | } |
| 4606 | |
| 4607 | if (isCompound) { |
| 4608 | MOZ_ASSERT(rhs)do { static_assert( mozilla::detail::AssertionConditionType< decltype(rhs)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(rhs))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("rhs", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4608); AnnotateMozCrashReason("MOZ_ASSERT" "(" "rhs" ")"); do { MOZ_CrashSequence(__null, 4608); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 4609 | switch (lhs->getKind()) { |
| 4610 | case ParseNodeKind::ArgumentsLength: |
| 4611 | case ParseNodeKind::DotExpr: { |
| 4612 | NonOptionalPropertyAccessBase* prop = |
| 4613 | &lhs->as<NonOptionalPropertyAccessBase>(); |
| 4614 | if (!poe->emitGet(prop->key().atom())) { |
| 4615 | // [stack] # if Super |
| 4616 | // [stack] THIS SUPERBASE PROP |
| 4617 | // [stack] # otherwise |
| 4618 | // [stack] OBJ PROP |
| 4619 | return false; |
| 4620 | } |
| 4621 | break; |
| 4622 | } |
| 4623 | case ParseNodeKind::ElemExpr: { |
| 4624 | if (!eoe->emitGet()) { |
| 4625 | // [stack] KEY THIS OBJ ELEM |
| 4626 | return false; |
| 4627 | } |
| 4628 | break; |
| 4629 | } |
| 4630 | case ParseNodeKind::PrivateMemberExpr: { |
| 4631 | if (!xoe->emitGet()) { |
| 4632 | // [stack] OBJ KEY VALUE |
| 4633 | return false; |
| 4634 | } |
| 4635 | break; |
| 4636 | } |
| 4637 | case ParseNodeKind::CallExpr: |
| 4638 | // We just emitted a JSOp::ThrowMsg and popped the call's return |
| 4639 | // value. Push a random value to make sure the stack depth is |
| 4640 | // correct. |
| 4641 | if (!emit1(JSOp::Null)) { |
| 4642 | // [stack] NULL |
| 4643 | return false; |
| 4644 | } |
| 4645 | break; |
| 4646 | default:; |
| 4647 | } |
| 4648 | } |
| 4649 | |
| 4650 | switch (lhs->getKind()) { |
| 4651 | case ParseNodeKind::Name: |
| 4652 | if (!noe->prepareForRhs()) { |
| 4653 | // [stack] ENV? VAL? |
| 4654 | return false; |
| 4655 | } |
| 4656 | offset += noe->emittedBindOp(); |
| 4657 | break; |
| 4658 | case ParseNodeKind::ArgumentsLength: |
| 4659 | case ParseNodeKind::DotExpr: |
| 4660 | if (!poe->prepareForRhs()) { |
| 4661 | // [stack] # if Simple Assignment with Super |
| 4662 | // [stack] THIS SUPERBASE |
| 4663 | // [stack] # if Simple Assignment with other |
| 4664 | // [stack] OBJ |
| 4665 | // [stack] # if Compound Assignment with Super |
| 4666 | // [stack] THIS SUPERBASE PROP |
| 4667 | // [stack] # if Compound Assignment with other |
| 4668 | // [stack] OBJ PROP |
| 4669 | return false; |
| 4670 | } |
| 4671 | break; |
| 4672 | case ParseNodeKind::ElemExpr: |
| 4673 | if (!eoe->prepareForRhs()) { |
| 4674 | // [stack] # if Simple Assignment with Super |
| 4675 | // [stack] THIS KEY SUPERBASE |
| 4676 | // [stack] # if Simple Assignment with other |
| 4677 | // [stack] OBJ KEY |
| 4678 | // [stack] # if Compound Assignment with Super |
| 4679 | // [stack] THIS KEY SUPERBASE ELEM |
| 4680 | // [stack] # if Compound Assignment with other |
| 4681 | // [stack] OBJ KEY ELEM |
| 4682 | return false; |
| 4683 | } |
| 4684 | break; |
| 4685 | case ParseNodeKind::PrivateMemberExpr: |
| 4686 | // no stack adjustment needed |
| 4687 | break; |
| 4688 | default: |
| 4689 | break; |
| 4690 | } |
| 4691 | |
| 4692 | if (rhs) { |
| 4693 | if (!emitAssignmentRhs(rhs, anonFunctionName)) { |
| 4694 | // [stack] ... VAL? RHS |
| 4695 | return false; |
| 4696 | } |
| 4697 | } else { |
| 4698 | // Assumption: Things with pre-emitted RHS values never need to be named. |
| 4699 | if (!emitAssignmentRhs(offset)) { |
| 4700 | // [stack] ... VAL? RHS |
| 4701 | return false; |
| 4702 | } |
| 4703 | } |
| 4704 | |
| 4705 | /* If += etc., emit the binary operator with a hint for the decompiler. */ |
| 4706 | if (isCompound) { |
| 4707 | if (!emit1(compoundOp)) { |
| 4708 | // [stack] ... VAL |
| 4709 | return false; |
| 4710 | } |
| 4711 | if (!emit1(JSOp::NopIsAssignOp)) { |
| 4712 | // [stack] ... VAL |
| 4713 | return false; |
| 4714 | } |
| 4715 | } |
| 4716 | |
| 4717 | /* Finally, emit the specialized assignment bytecode. */ |
| 4718 | switch (lhs->getKind()) { |
| 4719 | case ParseNodeKind::Name: { |
| 4720 | if (!noe->emitAssignment()) { |
| 4721 | // [stack] VAL |
| 4722 | return false; |
| 4723 | } |
| 4724 | break; |
| 4725 | } |
| 4726 | case ParseNodeKind::ArgumentsLength: |
| 4727 | case ParseNodeKind::DotExpr: { |
| 4728 | NonOptionalPropertyAccessBase* prop = |
| 4729 | &lhs->as<NonOptionalPropertyAccessBase>(); |
| 4730 | if (!poe->emitAssignment(prop->key().atom())) { |
| 4731 | // [stack] VAL |
| 4732 | return false; |
| 4733 | } |
| 4734 | break; |
| 4735 | } |
| 4736 | case ParseNodeKind::CallExpr: |
| 4737 | // We threw above, so nothing to do here. |
| 4738 | break; |
| 4739 | case ParseNodeKind::ElemExpr: { |
| 4740 | if (!eoe->emitAssignment()) { |
| 4741 | // [stack] VAL |
| 4742 | return false; |
| 4743 | } |
| 4744 | break; |
| 4745 | } |
| 4746 | case ParseNodeKind::PrivateMemberExpr: |
| 4747 | if (!xoe->emitAssignment()) { |
| 4748 | // [stack] VAL |
| 4749 | return false; |
| 4750 | } |
| 4751 | break; |
| 4752 | case ParseNodeKind::ArrayExpr: |
| 4753 | case ParseNodeKind::ObjectExpr: { |
| 4754 | auto selfHostedIter = |
| 4755 | rhs ? getSelfHostedIterFor(rhs) : SelfHostedIter::Deny; |
| 4756 | if (!emitDestructuringOps(&lhs->as<ListNode>(), |
| 4757 | DestructuringFlavor::Assignment, |
| 4758 | selfHostedIter)) { |
| 4759 | return false; |
| 4760 | } |
| 4761 | break; |
| 4762 | } |
| 4763 | default: |
| 4764 | MOZ_ASSERT(0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(0)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("0", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4764 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "0" ")"); do { MOZ_CrashSequence (__null, 4764); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 4765 | } |
| 4766 | return true; |
| 4767 | } |
| 4768 | |
| 4769 | bool BytecodeEmitter::emitShortCircuitAssignment(AssignmentNode* node) { |
| 4770 | TDZCheckCache tdzCache(this); |
| 4771 | |
| 4772 | JSOp op; |
| 4773 | switch (node->getKind()) { |
| 4774 | case ParseNodeKind::CoalesceAssignExpr: |
| 4775 | op = JSOp::Coalesce; |
| 4776 | break; |
| 4777 | case ParseNodeKind::OrAssignExpr: |
| 4778 | op = JSOp::Or; |
| 4779 | break; |
| 4780 | case ParseNodeKind::AndAssignExpr: |
| 4781 | op = JSOp::And; |
| 4782 | break; |
| 4783 | default: |
| 4784 | MOZ_CRASH("Unexpected ParseNodeKind")do { do { } while (false); MOZ_ReportCrash("" "Unexpected ParseNodeKind" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4784); AnnotateMozCrashReason("MOZ_CRASH(" "Unexpected ParseNodeKind" ")"); do { MOZ_CrashSequence(__null, 4784); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 4785 | } |
| 4786 | |
| 4787 | ParseNode* lhs = node->left(); |
| 4788 | ParseNode* rhs = node->right(); |
| 4789 | |
| 4790 | // |name| is used within NameOpEmitter, so its lifetime must surpass |noe|. |
| 4791 | TaggedParserAtomIndex name; |
| 4792 | |
| 4793 | // Select the appropriate emitter based on the left-hand side. |
| 4794 | Maybe<NameOpEmitter> noe; |
| 4795 | Maybe<PropOpEmitter> poe; |
| 4796 | Maybe<ElemOpEmitter> eoe; |
| 4797 | Maybe<PrivateOpEmitter> xoe; |
| 4798 | |
| 4799 | int32_t depth = bytecodeSection().stackDepth(); |
| 4800 | |
| 4801 | // Number of values pushed onto the stack in addition to the lhs value. |
| 4802 | int32_t numPushed; |
| 4803 | |
| 4804 | // Evaluate the left-hand side expression and compute any stack values needed |
| 4805 | // for the assignment. |
| 4806 | switch (lhs->getKind()) { |
| 4807 | case ParseNodeKind::Name: { |
| 4808 | name = lhs->as<NameNode>().name(); |
| 4809 | noe.emplace(this, name, NameOpEmitter::Kind::CompoundAssignment); |
| 4810 | |
| 4811 | if (!noe->prepareForRhs()) { |
| 4812 | // [stack] ENV? LHS |
| 4813 | return false; |
| 4814 | } |
| 4815 | |
| 4816 | numPushed = noe->emittedBindOp(); |
| 4817 | break; |
| 4818 | } |
| 4819 | case ParseNodeKind::ArgumentsLength: |
| 4820 | case ParseNodeKind::DotExpr: { |
| 4821 | NonOptionalPropertyAccessBase* prop = |
| 4822 | &lhs->as<NonOptionalPropertyAccessBase>(); |
| 4823 | bool isSuper = prop->isSuper(); |
| 4824 | |
| 4825 | poe.emplace(this, PropOpEmitter::Kind::CompoundAssignment, |
| 4826 | isSuper ? PropOpEmitter::ObjKind::Super |
| 4827 | : PropOpEmitter::ObjKind::Other); |
| 4828 | |
| 4829 | if (!poe->prepareForObj()) { |
| 4830 | return false; |
| 4831 | } |
| 4832 | |
| 4833 | if (isSuper) { |
| 4834 | UnaryNode* base = &prop->expression().as<UnaryNode>(); |
| 4835 | if (!emitGetThisForSuperBase(base)) { |
| 4836 | // [stack] THIS SUPERBASE |
| 4837 | return false; |
| 4838 | } |
| 4839 | } else { |
| 4840 | if (!emitTree(&prop->expression())) { |
| 4841 | // [stack] OBJ |
| 4842 | return false; |
| 4843 | } |
| 4844 | } |
| 4845 | |
| 4846 | if (!poe->emitGet(prop->key().atom())) { |
| 4847 | // [stack] # if Super |
| 4848 | // [stack] THIS SUPERBASE LHS |
| 4849 | // [stack] # otherwise |
| 4850 | // [stack] OBJ LHS |
| 4851 | return false; |
| 4852 | } |
| 4853 | |
| 4854 | if (!poe->prepareForRhs()) { |
| 4855 | // [stack] # if Super |
| 4856 | // [stack] THIS SUPERBASE LHS |
| 4857 | // [stack] # otherwise |
| 4858 | // [stack] OBJ LHS |
| 4859 | return false; |
| 4860 | } |
| 4861 | |
| 4862 | numPushed = 1 + isSuper; |
| 4863 | break; |
| 4864 | } |
| 4865 | |
| 4866 | case ParseNodeKind::ElemExpr: { |
| 4867 | PropertyByValue* elem = &lhs->as<PropertyByValue>(); |
| 4868 | bool isSuper = elem->isSuper(); |
| 4869 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4869); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 4869); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4870 | eoe.emplace(this, ElemOpEmitter::Kind::CompoundAssignment, |
| 4871 | isSuper ? ElemOpEmitter::ObjKind::Super |
| 4872 | : ElemOpEmitter::ObjKind::Other); |
| 4873 | |
| 4874 | if (!emitElemObjAndKey(elem, *eoe)) { |
| 4875 | // [stack] # if Super |
| 4876 | // [stack] THIS KEY |
| 4877 | // [stack] # otherwise |
| 4878 | // [stack] OBJ KEY |
| 4879 | return false; |
| 4880 | } |
| 4881 | |
| 4882 | if (!eoe->emitGet()) { |
| 4883 | // [stack] # if Super |
| 4884 | // [stack] THIS KEY SUPERBASE LHS |
| 4885 | // [stack] # otherwise |
| 4886 | // [stack] OBJ KEY LHS |
| 4887 | return false; |
| 4888 | } |
| 4889 | |
| 4890 | if (!eoe->prepareForRhs()) { |
| 4891 | // [stack] # if Super |
| 4892 | // [stack] THIS KEY SUPERBASE LHS |
| 4893 | // [stack] # otherwise |
| 4894 | // [stack] OBJ KEY LHS |
| 4895 | return false; |
| 4896 | } |
| 4897 | |
| 4898 | numPushed = 2 + isSuper; |
| 4899 | break; |
| 4900 | } |
| 4901 | |
| 4902 | case ParseNodeKind::PrivateMemberExpr: { |
| 4903 | PrivateMemberAccess* privateExpr = &lhs->as<PrivateMemberAccess>(); |
| 4904 | xoe.emplace(this, PrivateOpEmitter::Kind::CompoundAssignment, |
| 4905 | privateExpr->privateName().name()); |
| 4906 | if (!emitTree(&privateExpr->expression())) { |
| 4907 | // [stack] OBJ |
| 4908 | return false; |
| 4909 | } |
| 4910 | if (!xoe->emitReference()) { |
| 4911 | // [stack] OBJ NAME |
| 4912 | return false; |
| 4913 | } |
| 4914 | if (!xoe->emitGet()) { |
| 4915 | // [stack] OBJ NAME LHS |
| 4916 | return false; |
| 4917 | } |
| 4918 | numPushed = xoe->numReferenceSlots(); |
| 4919 | break; |
| 4920 | } |
| 4921 | |
| 4922 | default: |
| 4923 | MOZ_CRASH()do { do { } while (false); MOZ_ReportCrash("" , "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4923); AnnotateMozCrashReason("MOZ_CRASH(" ")"); do { MOZ_CrashSequence (__null, 4923); __attribute__((nomerge)) ::abort(); } while ( false); } while (false); |
| 4924 | } |
| 4925 | |
| 4926 | MOZ_ASSERT(bytecodeSection().stackDepth() == depth + numPushed + 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() == depth + numPushed + 1)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(bytecodeSection().stackDepth() == depth + numPushed + 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("bytecodeSection().stackDepth() == depth + numPushed + 1", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4926); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() == depth + numPushed + 1" ")"); do { MOZ_CrashSequence(__null, 4926); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4927 | |
| 4928 | // Test for the short-circuit condition. |
| 4929 | JumpList jump; |
| 4930 | if (!emitJump(op, &jump)) { |
| 4931 | // [stack] ... LHS |
| 4932 | return false; |
| 4933 | } |
| 4934 | |
| 4935 | // The short-circuit condition wasn't fulfilled, pop the left-hand side value |
| 4936 | // which was kept on the stack. |
| 4937 | if (!emit1(JSOp::Pop)) { |
| 4938 | // [stack] ... |
| 4939 | return false; |
| 4940 | } |
| 4941 | |
| 4942 | if (!emitAssignmentRhs(rhs, name)) { |
| 4943 | // [stack] ... RHS |
| 4944 | return false; |
| 4945 | } |
| 4946 | |
| 4947 | // Perform the actual assignment. |
| 4948 | switch (lhs->getKind()) { |
| 4949 | case ParseNodeKind::Name: { |
| 4950 | if (!noe->emitAssignment()) { |
| 4951 | // [stack] RHS |
| 4952 | return false; |
| 4953 | } |
| 4954 | break; |
| 4955 | } |
| 4956 | case ParseNodeKind::ArgumentsLength: |
| 4957 | case ParseNodeKind::DotExpr: { |
| 4958 | NonOptionalPropertyAccessBase* prop = |
| 4959 | &lhs->as<NonOptionalPropertyAccessBase>(); |
| 4960 | |
| 4961 | if (!poe->emitAssignment(prop->key().atom())) { |
| 4962 | // [stack] RHS |
| 4963 | return false; |
| 4964 | } |
| 4965 | break; |
| 4966 | } |
| 4967 | |
| 4968 | case ParseNodeKind::ElemExpr: { |
| 4969 | if (!eoe->emitAssignment()) { |
| 4970 | // [stack] RHS |
| 4971 | return false; |
| 4972 | } |
| 4973 | break; |
| 4974 | } |
| 4975 | |
| 4976 | case ParseNodeKind::PrivateMemberExpr: |
| 4977 | if (!xoe->emitAssignment()) { |
| 4978 | // [stack] RHS |
| 4979 | return false; |
| 4980 | } |
| 4981 | break; |
| 4982 | |
| 4983 | default: |
| 4984 | MOZ_CRASH()do { do { } while (false); MOZ_ReportCrash("" , "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 4984); AnnotateMozCrashReason("MOZ_CRASH(" ")"); do { MOZ_CrashSequence (__null, 4984); __attribute__((nomerge)) ::abort(); } while ( false); } while (false); |
| 4985 | } |
| 4986 | |
| 4987 | MOZ_ASSERT(bytecodeSection().stackDepth() == depth + 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() == depth + 1)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() == depth + 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() == depth + 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 4987); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() == depth + 1" ")"); do { MOZ_CrashSequence(__null, 4987); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 4988 | |
| 4989 | // Join with the short-circuit jump and pop anything left on the stack. |
| 4990 | if (numPushed > 0) { |
| 4991 | JumpList jumpAroundPop; |
| 4992 | if (!emitJump(JSOp::Goto, &jumpAroundPop)) { |
| 4993 | // [stack] RHS |
| 4994 | return false; |
| 4995 | } |
| 4996 | |
| 4997 | if (!emitJumpTargetAndPatch(jump)) { |
| 4998 | // [stack] ... LHS |
| 4999 | return false; |
| 5000 | } |
| 5001 | |
| 5002 | // Reconstruct the stack depth after the jump. |
| 5003 | bytecodeSection().setStackDepth(depth + 1 + numPushed); |
| 5004 | |
| 5005 | // Move the left-hand side value to the bottom and pop the rest. |
| 5006 | if (!emitUnpickN(numPushed)) { |
| 5007 | // [stack] LHS ... |
| 5008 | return false; |
| 5009 | } |
| 5010 | if (!emitPopN(numPushed)) { |
| 5011 | // [stack] LHS |
| 5012 | return false; |
| 5013 | } |
| 5014 | |
| 5015 | if (!emitJumpTargetAndPatch(jumpAroundPop)) { |
| 5016 | // [stack] LHS | RHS |
| 5017 | return false; |
| 5018 | } |
| 5019 | } else { |
| 5020 | if (!emitJumpTargetAndPatch(jump)) { |
| 5021 | // [stack] LHS | RHS |
| 5022 | return false; |
| 5023 | } |
| 5024 | } |
| 5025 | |
| 5026 | MOZ_ASSERT(bytecodeSection().stackDepth() == depth + 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() == depth + 1)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() == depth + 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() == depth + 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5026); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() == depth + 1" ")"); do { MOZ_CrashSequence(__null, 5026); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5027 | |
| 5028 | return true; |
| 5029 | } |
| 5030 | |
| 5031 | bool BytecodeEmitter::emitCallSiteObjectArray(ObjLiteralWriter& writer, |
| 5032 | ListNode* cookedOrRaw, |
| 5033 | ParseNode* head, uint32_t count) { |
| 5034 | DebugOnly<size_t> idx = 0; |
| 5035 | for (ParseNode* pn : cookedOrRaw->contentsFrom(head)) { |
| 5036 | MOZ_ASSERT(pn->isKind(ParseNodeKind::TemplateStringExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->isKind(ParseNodeKind::TemplateStringExpr) || pn ->isKind(ParseNodeKind::RawUndefinedExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->isKind(ParseNodeKind:: TemplateStringExpr) || pn->isKind(ParseNodeKind::RawUndefinedExpr )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->isKind(ParseNodeKind::TemplateStringExpr) || pn->isKind(ParseNodeKind::RawUndefinedExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5037); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->isKind(ParseNodeKind::TemplateStringExpr) || pn->isKind(ParseNodeKind::RawUndefinedExpr)" ")"); do { MOZ_CrashSequence(__null, 5037); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 5037 | pn->isKind(ParseNodeKind::RawUndefinedExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->isKind(ParseNodeKind::TemplateStringExpr) || pn ->isKind(ParseNodeKind::RawUndefinedExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->isKind(ParseNodeKind:: TemplateStringExpr) || pn->isKind(ParseNodeKind::RawUndefinedExpr )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("pn->isKind(ParseNodeKind::TemplateStringExpr) || pn->isKind(ParseNodeKind::RawUndefinedExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5037); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->isKind(ParseNodeKind::TemplateStringExpr) || pn->isKind(ParseNodeKind::RawUndefinedExpr)" ")"); do { MOZ_CrashSequence(__null, 5037); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5038 | |
| 5039 | if (!emitObjLiteralValue(writer, pn)) { |
| 5040 | return false; |
| 5041 | } |
| 5042 | idx++; |
| 5043 | } |
| 5044 | MOZ_ASSERT(idx == count)do { static_assert( mozilla::detail::AssertionConditionType< decltype(idx == count)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(idx == count))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("idx == count", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5044); AnnotateMozCrashReason("MOZ_ASSERT" "(" "idx == count" ")"); do { MOZ_CrashSequence(__null, 5044); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5045 | |
| 5046 | return true; |
| 5047 | } |
| 5048 | |
| 5049 | bool BytecodeEmitter::emitCallSiteObject(CallSiteNode* callSiteObj) { |
| 5050 | constexpr JSOp op = JSOp::CallSiteObj; |
| 5051 | |
| 5052 | // The first element of a call-site node is the raw-values list. Skip over it. |
| 5053 | ListNode* raw = callSiteObj->rawNodes(); |
| 5054 | MOZ_ASSERT(raw->isKind(ParseNodeKind::ArrayExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(raw->isKind(ParseNodeKind::ArrayExpr))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(raw->isKind(ParseNodeKind::ArrayExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("raw->isKind(ParseNodeKind::ArrayExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5054); AnnotateMozCrashReason("MOZ_ASSERT" "(" "raw->isKind(ParseNodeKind::ArrayExpr)" ")"); do { MOZ_CrashSequence(__null, 5054); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5055 | ParseNode* head = callSiteObj->head()->pn_next; |
| 5056 | |
| 5057 | uint32_t count = callSiteObj->count() - 1; |
| 5058 | MOZ_ASSERT(count == raw->count())do { static_assert( mozilla::detail::AssertionConditionType< decltype(count == raw->count())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(count == raw->count()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("count == raw->count()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5058); AnnotateMozCrashReason("MOZ_ASSERT" "(" "count == raw->count()" ")"); do { MOZ_CrashSequence(__null, 5058); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5059 | |
| 5060 | ObjLiteralWriter writer; |
| 5061 | writer.beginCallSiteObj(op); |
| 5062 | writer.beginDenseArrayElements(); |
| 5063 | |
| 5064 | // Write elements of the two arrays: the 'cooked' values followed by the |
| 5065 | // 'raw' values. |
| 5066 | MOZ_RELEASE_ASSERT(count < UINT32_MAX / 2,do { static_assert( mozilla::detail::AssertionConditionType< decltype(count < (4294967295U) / 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(count < (4294967295U) / 2 ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "count < (4294967295U) / 2" " (" "Number of elements for both arrays must fit in uint32_t" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5067 ); AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "count < (4294967295U) / 2" ") (" "Number of elements for both arrays must fit in uint32_t" ")"); do { MOZ_CrashSequence(__null, 5067); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 5067 | "Number of elements for both arrays must fit in uint32_t")do { static_assert( mozilla::detail::AssertionConditionType< decltype(count < (4294967295U) / 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(count < (4294967295U) / 2 ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "count < (4294967295U) / 2" " (" "Number of elements for both arrays must fit in uint32_t" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5067 ); AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "count < (4294967295U) / 2" ") (" "Number of elements for both arrays must fit in uint32_t" ")"); do { MOZ_CrashSequence(__null, 5067); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5068 | if (!emitCallSiteObjectArray(writer, callSiteObj, head, count)) { |
| 5069 | return false; |
| 5070 | } |
| 5071 | if (!emitCallSiteObjectArray(writer, raw, raw->head(), count)) { |
| 5072 | return false; |
| 5073 | } |
| 5074 | |
| 5075 | GCThingIndex cookedIndex; |
| 5076 | if (!addObjLiteralData(writer, &cookedIndex)) { |
| 5077 | return false; |
| 5078 | } |
| 5079 | |
| 5080 | MOZ_ASSERT(sc->hasCallSiteObj())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->hasCallSiteObj())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->hasCallSiteObj()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("sc->hasCallSiteObj()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5080); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->hasCallSiteObj()" ")"); do { MOZ_CrashSequence(__null, 5080); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5081 | |
| 5082 | return emitInternedObjectOp(cookedIndex, op); |
| 5083 | } |
| 5084 | |
| 5085 | bool BytecodeEmitter::emitCatch(BinaryNode* catchClause) { |
| 5086 | // We must be nested under a try-finally statement. |
| 5087 | MOZ_ASSERT(innermostNestableControl->is<TryFinallyControl>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(innermostNestableControl->is<TryFinallyControl >())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(innermostNestableControl->is<TryFinallyControl >()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("innermostNestableControl->is<TryFinallyControl>()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5087); AnnotateMozCrashReason("MOZ_ASSERT" "(" "innermostNestableControl->is<TryFinallyControl>()" ")"); do { MOZ_CrashSequence(__null, 5087); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5088 | |
| 5089 | ParseNode* param = catchClause->left(); |
| 5090 | if (!param) { |
| 5091 | // Catch parameter was omitted; just discard the exception. |
| 5092 | if (!emit1(JSOp::Pop)) { |
| 5093 | return false; |
| 5094 | } |
| 5095 | } else { |
| 5096 | switch (param->getKind()) { |
| 5097 | case ParseNodeKind::ArrayExpr: |
| 5098 | case ParseNodeKind::ObjectExpr: |
| 5099 | if (!emitDestructuringOps(¶m->as<ListNode>(), |
| 5100 | DestructuringFlavor::Declaration, |
| 5101 | SelfHostedIter::Deny)) { |
| 5102 | return false; |
| 5103 | } |
| 5104 | if (!emit1(JSOp::Pop)) { |
| 5105 | return false; |
| 5106 | } |
| 5107 | break; |
| 5108 | |
| 5109 | case ParseNodeKind::Name: |
| 5110 | if (!emitLexicalInitialization(¶m->as<NameNode>())) { |
| 5111 | return false; |
| 5112 | } |
| 5113 | if (!emit1(JSOp::Pop)) { |
| 5114 | return false; |
| 5115 | } |
| 5116 | break; |
| 5117 | |
| 5118 | default: |
| 5119 | MOZ_ASSERT(0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(0)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("0", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5119 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "0" ")"); do { MOZ_CrashSequence (__null, 5119); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 5120 | } |
| 5121 | } |
| 5122 | |
| 5123 | /* Emit the catch body. */ |
| 5124 | return emitTree(catchClause->right()); |
| 5125 | } |
| 5126 | |
| 5127 | // Using MOZ_NEVER_INLINE in here is a workaround for llvm.org/pr14047. See the |
| 5128 | // comment on EmitSwitch. |
| 5129 | MOZ_NEVER_INLINE__attribute__((noinline)) bool BytecodeEmitter::emitTry(TryNode* tryNode) { |
| 5130 | LexicalScopeNode* catchScope = tryNode->catchScope(); |
| 5131 | ParseNode* finallyNode = tryNode->finallyBlock(); |
| 5132 | |
| 5133 | TryEmitter::Kind kind; |
| 5134 | if (catchScope) { |
| 5135 | if (finallyNode) { |
| 5136 | kind = TryEmitter::Kind::TryCatchFinally; |
| 5137 | } else { |
| 5138 | kind = TryEmitter::Kind::TryCatch; |
| 5139 | } |
| 5140 | } else { |
| 5141 | MOZ_ASSERT(finallyNode)do { static_assert( mozilla::detail::AssertionConditionType< decltype(finallyNode)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(finallyNode))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("finallyNode", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5141); AnnotateMozCrashReason("MOZ_ASSERT" "(" "finallyNode" ")"); do { MOZ_CrashSequence(__null, 5141); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5142 | kind = TryEmitter::Kind::TryFinally; |
| 5143 | } |
| 5144 | TryEmitter tryCatch(this, kind, TryEmitter::ControlKind::Syntactic); |
| 5145 | |
| 5146 | if (!tryCatch.emitTry()) { |
| 5147 | return false; |
| 5148 | } |
| 5149 | |
| 5150 | if (!emitTree(tryNode->body())) { |
| 5151 | return false; |
| 5152 | } |
| 5153 | |
| 5154 | // If this try has a catch block, emit it. |
| 5155 | if (catchScope) { |
| 5156 | // The emitted code for a catch block looks like: |
| 5157 | // |
| 5158 | // [pushlexicalenv] only if any local aliased |
| 5159 | // exception |
| 5160 | // setlocal 0; pop assign or possibly destructure exception |
| 5161 | // < catch block contents > |
| 5162 | // debugleaveblock |
| 5163 | // [poplexicalenv] only if any local aliased |
| 5164 | // if there is a finally block: |
| 5165 | // goto <finally> |
| 5166 | // [jump target for returning from finally] |
| 5167 | // goto <after finally> |
| 5168 | if (!tryCatch.emitCatch()) { |
| 5169 | return false; |
| 5170 | } |
| 5171 | |
| 5172 | // Emit the lexical scope and catch body. |
| 5173 | if (!emitTree(catchScope)) { |
| 5174 | return false; |
| 5175 | } |
| 5176 | } |
| 5177 | |
| 5178 | // Emit the finally handler, if there is one. |
| 5179 | if (finallyNode) { |
| 5180 | if (!tryCatch.emitFinally(Some(finallyNode->pn_pos.begin))) { |
| 5181 | return false; |
| 5182 | } |
| 5183 | |
| 5184 | if (!emitTree(finallyNode)) { |
| 5185 | return false; |
| 5186 | } |
| 5187 | } |
| 5188 | |
| 5189 | if (!tryCatch.emitEnd()) { |
| 5190 | return false; |
| 5191 | } |
| 5192 | |
| 5193 | return true; |
| 5194 | } |
| 5195 | |
| 5196 | [[nodiscard]] bool BytecodeEmitter::emitJumpToFinally(JumpList* jump, |
| 5197 | uint32_t idx) { |
| 5198 | // Push the continuation index. |
| 5199 | if (!emitNumberOp(idx)) { |
| 5200 | return false; |
| 5201 | } |
| 5202 | |
| 5203 | // Push |exception_stack|. |
| 5204 | if (!emit1(JSOp::Null)) { |
| 5205 | return false; |
| 5206 | } |
| 5207 | |
| 5208 | // Push |throwing|. |
| 5209 | if (!emit1(JSOp::False)) { |
| 5210 | return false; |
| 5211 | } |
| 5212 | |
| 5213 | // Jump to the finally block. |
| 5214 | if (!emitJumpNoFallthrough(JSOp::Goto, jump)) { |
| 5215 | return false; |
| 5216 | } |
| 5217 | |
| 5218 | return true; |
| 5219 | } |
| 5220 | |
| 5221 | bool BytecodeEmitter::emitIf(TernaryNode* ifNode) { |
| 5222 | IfEmitter ifThenElse(this); |
| 5223 | |
| 5224 | if (!ifThenElse.emitIf(Some(ifNode->kid1()->pn_pos.begin))) { |
| 5225 | return false; |
| 5226 | } |
| 5227 | |
| 5228 | if_again: |
| 5229 | ParseNode* testNode = ifNode->kid1(); |
| 5230 | auto conditionKind = IfEmitter::ConditionKind::Positive; |
| 5231 | if (testNode->isKind(ParseNodeKind::NotExpr)) { |
| 5232 | testNode = testNode->as<UnaryNode>().kid(); |
| 5233 | conditionKind = IfEmitter::ConditionKind::Negative; |
| 5234 | } |
| 5235 | |
| 5236 | if (!markStepBreakpoint()) { |
| 5237 | return false; |
| 5238 | } |
| 5239 | |
| 5240 | // Emit code for the condition before pushing stmtInfo. |
| 5241 | // NOTE: NotExpr of testNode may be unwrapped, and in that case the negation |
| 5242 | // is handled by conditionKind. |
| 5243 | if (!emitTree(testNode)) { |
| 5244 | return false; |
| 5245 | } |
| 5246 | |
| 5247 | ParseNode* elseNode = ifNode->kid3(); |
| 5248 | if (elseNode) { |
| 5249 | if (!ifThenElse.emitThenElse(conditionKind)) { |
| 5250 | return false; |
| 5251 | } |
| 5252 | } else { |
| 5253 | if (!ifThenElse.emitThen(conditionKind)) { |
| 5254 | return false; |
| 5255 | } |
| 5256 | } |
| 5257 | |
| 5258 | /* Emit code for the then part. */ |
| 5259 | if (!emitTree(ifNode->kid2())) { |
| 5260 | return false; |
| 5261 | } |
| 5262 | |
| 5263 | if (elseNode) { |
| 5264 | if (elseNode->isKind(ParseNodeKind::IfStmt)) { |
| 5265 | ifNode = &elseNode->as<TernaryNode>(); |
| 5266 | |
| 5267 | if (!ifThenElse.emitElseIf(Some(ifNode->kid1()->pn_pos.begin))) { |
| 5268 | return false; |
| 5269 | } |
| 5270 | |
| 5271 | goto if_again; |
| 5272 | } |
| 5273 | |
| 5274 | if (!ifThenElse.emitElse()) { |
| 5275 | return false; |
| 5276 | } |
| 5277 | |
| 5278 | /* Emit code for the else part. */ |
| 5279 | if (!emitTree(elseNode)) { |
| 5280 | return false; |
| 5281 | } |
| 5282 | } |
| 5283 | |
| 5284 | if (!ifThenElse.emitEnd()) { |
| 5285 | return false; |
| 5286 | } |
| 5287 | |
| 5288 | return true; |
| 5289 | } |
| 5290 | |
| 5291 | bool BytecodeEmitter::emitHoistedFunctionsInList(ListNode* stmtList) { |
| 5292 | MOZ_ASSERT(stmtList->hasTopLevelFunctionDeclarations())do { static_assert( mozilla::detail::AssertionConditionType< decltype(stmtList->hasTopLevelFunctionDeclarations())>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(stmtList->hasTopLevelFunctionDeclarations()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("stmtList->hasTopLevelFunctionDeclarations()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5292); AnnotateMozCrashReason("MOZ_ASSERT" "(" "stmtList->hasTopLevelFunctionDeclarations()" ")"); do { MOZ_CrashSequence(__null, 5292); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5293 | |
| 5294 | // We can call this multiple times for sloppy eval scopes. |
| 5295 | if (stmtList->emittedTopLevelFunctionDeclarations()) { |
| 5296 | return true; |
| 5297 | } |
| 5298 | |
| 5299 | stmtList->setEmittedTopLevelFunctionDeclarations(); |
| 5300 | |
| 5301 | for (ParseNode* stmt : stmtList->contents()) { |
| 5302 | ParseNode* maybeFun = stmt; |
| 5303 | |
| 5304 | if (!sc->strict()) { |
| 5305 | while (maybeFun->isKind(ParseNodeKind::LabelStmt)) { |
| 5306 | maybeFun = maybeFun->as<LabeledStatement>().statement(); |
| 5307 | } |
| 5308 | } |
| 5309 | |
| 5310 | if (maybeFun->is<FunctionNode>() && |
| 5311 | maybeFun->as<FunctionNode>().functionIsHoisted()) { |
| 5312 | if (!emitTree(maybeFun)) { |
| 5313 | return false; |
| 5314 | } |
| 5315 | } |
| 5316 | } |
| 5317 | |
| 5318 | return true; |
| 5319 | } |
| 5320 | |
| 5321 | bool BytecodeEmitter::emitLexicalScopeBody( |
| 5322 | ParseNode* body, EmitLineNumberNote emitLineNote /* = EMIT_LINENOTE */) { |
| 5323 | if (body->isKind(ParseNodeKind::StatementList) && |
| 5324 | body->as<ListNode>().hasTopLevelFunctionDeclarations()) { |
| 5325 | // This block contains function statements whose definitions are |
| 5326 | // hoisted to the top of the block. Emit these as a separate pass |
| 5327 | // before the rest of the block. |
| 5328 | if (!emitHoistedFunctionsInList(&body->as<ListNode>())) { |
| 5329 | return false; |
| 5330 | } |
| 5331 | } |
| 5332 | |
| 5333 | // Line notes were updated by emitLexicalScope or emitScript. |
| 5334 | return emitTree(body, ValueUsage::WantValue, emitLineNote); |
| 5335 | } |
| 5336 | |
| 5337 | // Using MOZ_NEVER_INLINE in here is a workaround for llvm.org/pr14047. See |
| 5338 | // the comment on emitSwitch. |
| 5339 | MOZ_NEVER_INLINE__attribute__((noinline)) bool BytecodeEmitter::emitLexicalScope( |
| 5340 | LexicalScopeNode* lexicalScope) { |
| 5341 | LexicalScopeEmitter lse(this); |
| 5342 | |
| 5343 | ParseNode* body = lexicalScope->scopeBody(); |
| 5344 | if (lexicalScope->isEmptyScope()) { |
| 5345 | if (!lse.emitEmptyScope()) { |
| 5346 | return false; |
| 5347 | } |
| 5348 | |
| 5349 | if (!emitLexicalScopeBody(body)) { |
| 5350 | return false; |
| 5351 | } |
| 5352 | |
| 5353 | if (!lse.emitEnd()) { |
| 5354 | return false; |
| 5355 | } |
| 5356 | |
| 5357 | return true; |
| 5358 | } |
| 5359 | |
| 5360 | // We are about to emit some bytecode for what the spec calls "declaration |
| 5361 | // instantiation". Assign these instructions to the opening `{` of the |
| 5362 | // block. (Using the location of each declaration we're instantiating is |
| 5363 | // too weird when stepping in the debugger.) |
| 5364 | if (!ParseNodeRequiresSpecialLineNumberNotes(body)) { |
| 5365 | if (!updateSourceCoordNotes(lexicalScope->pn_pos.begin)) { |
| 5366 | return false; |
| 5367 | } |
| 5368 | } |
| 5369 | |
| 5370 | ScopeKind kind; |
| 5371 | if (body->isKind(ParseNodeKind::Catch)) { |
| 5372 | BinaryNode* catchNode = &body->as<BinaryNode>(); |
| 5373 | kind = |
| 5374 | (!catchNode->left() || catchNode->left()->isKind(ParseNodeKind::Name)) |
| 5375 | ? ScopeKind::SimpleCatch |
| 5376 | : ScopeKind::Catch; |
| 5377 | } else { |
| 5378 | kind = lexicalScope->kind(); |
| 5379 | } |
| 5380 | |
| 5381 | BlockKind blockKind = BlockKind::Other; |
| 5382 | if (body->isKind(ParseNodeKind::ForStmt) && |
| 5383 | body->as<ForNode>().head()->isKind(ParseNodeKind::ForOf)) { |
| 5384 | MOZ_ASSERT(kind == ScopeKind::Lexical)do { static_assert( mozilla::detail::AssertionConditionType< decltype(kind == ScopeKind::Lexical)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(kind == ScopeKind::Lexical)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("kind == ScopeKind::Lexical" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5384); AnnotateMozCrashReason("MOZ_ASSERT" "(" "kind == ScopeKind::Lexical" ")"); do { MOZ_CrashSequence(__null, 5384); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5385 | blockKind = BlockKind::ForOf; |
| 5386 | } |
| 5387 | |
| 5388 | if (!lse.emitScope(kind, lexicalScope->scopeBindings(), blockKind)) { |
| 5389 | return false; |
| 5390 | } |
| 5391 | |
| 5392 | if (body->isKind(ParseNodeKind::ForStmt)) { |
| 5393 | // for loops need to emit JSOp::FreshenLexicalEnv/JSOp::RecreateLexicalEnv |
| 5394 | // if there are lexical declarations in the head. Signal this by passing a |
| 5395 | // non-nullptr lexical scope. |
| 5396 | if (!emitFor(&body->as<ForNode>(), &lse.emitterScope())) { |
| 5397 | return false; |
| 5398 | } |
| 5399 | } else { |
| 5400 | if (!emitLexicalScopeBody(body, SUPPRESS_LINENOTE)) { |
| 5401 | return false; |
| 5402 | } |
| 5403 | } |
| 5404 | |
| 5405 | if (!lse.emitEnd()) { |
| 5406 | return false; |
| 5407 | } |
| 5408 | return true; |
| 5409 | } |
| 5410 | |
| 5411 | bool BytecodeEmitter::emitWith(BinaryNode* withNode) { |
| 5412 | // Ensure that the column of the 'with' is set properly. |
| 5413 | if (!updateSourceCoordNotes(withNode->left()->pn_pos.begin)) { |
| 5414 | return false; |
| 5415 | } |
| 5416 | |
| 5417 | if (!markStepBreakpoint()) { |
| 5418 | return false; |
| 5419 | } |
| 5420 | |
| 5421 | if (!emitTree(withNode->left())) { |
| 5422 | return false; |
| 5423 | } |
| 5424 | |
| 5425 | EmitterScope emitterScope(this); |
| 5426 | if (!emitterScope.enterWith(this)) { |
| 5427 | return false; |
| 5428 | } |
| 5429 | |
| 5430 | if (!emitTree(withNode->right())) { |
| 5431 | return false; |
| 5432 | } |
| 5433 | |
| 5434 | return emitterScope.leave(this); |
| 5435 | } |
| 5436 | |
| 5437 | bool BytecodeEmitter::emitCopyDataProperties(CopyOption option) { |
| 5438 | DebugOnly<int32_t> depth = bytecodeSection().stackDepth(); |
| 5439 | |
| 5440 | uint32_t argc; |
| 5441 | if (option == CopyOption::Filtered) { |
| 5442 | MOZ_ASSERT(depth > 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(depth > 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(depth > 2))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("depth > 2", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5442); AnnotateMozCrashReason("MOZ_ASSERT" "(" "depth > 2" ")"); do { MOZ_CrashSequence(__null, 5442); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5443 | // [stack] TARGET SOURCE SET |
| 5444 | argc = 3; |
| 5445 | |
| 5446 | if (!emitAtomOp(JSOp::GetIntrinsic, |
| 5447 | TaggedParserAtomIndex::WellKnown::CopyDataProperties())) { |
| 5448 | // [stack] TARGET SOURCE SET COPYDATAPROPERTIES |
| 5449 | return false; |
| 5450 | } |
| 5451 | } else { |
| 5452 | MOZ_ASSERT(depth > 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(depth > 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(depth > 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("depth > 1", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5452); AnnotateMozCrashReason("MOZ_ASSERT" "(" "depth > 1" ")"); do { MOZ_CrashSequence(__null, 5452); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5453 | // [stack] TARGET SOURCE |
| 5454 | argc = 2; |
| 5455 | |
| 5456 | if (!emitAtomOp( |
| 5457 | JSOp::GetIntrinsic, |
| 5458 | TaggedParserAtomIndex::WellKnown::CopyDataPropertiesUnfiltered())) { |
| 5459 | // [stack] TARGET SOURCE COPYDATAPROPERTIES |
| 5460 | return false; |
| 5461 | } |
| 5462 | } |
| 5463 | |
| 5464 | if (!emit1(JSOp::Undefined)) { |
| 5465 | // [stack] TARGET SOURCE SET? COPYDATAPROPERTIES |
| 5466 | // UNDEFINED |
| 5467 | return false; |
| 5468 | } |
| 5469 | if (!emit2(JSOp::Pick, argc + 1)) { |
| 5470 | // [stack] SOURCE SET? COPYDATAPROPERTIES UNDEFINED |
| 5471 | // TARGET |
| 5472 | return false; |
| 5473 | } |
| 5474 | if (!emit2(JSOp::Pick, argc + 1)) { |
| 5475 | // [stack] SET? COPYDATAPROPERTIES UNDEFINED TARGET |
| 5476 | // SOURCE |
| 5477 | return false; |
| 5478 | } |
| 5479 | if (option == CopyOption::Filtered) { |
| 5480 | if (!emit2(JSOp::Pick, argc + 1)) { |
| 5481 | // [stack] COPYDATAPROPERTIES UNDEFINED TARGET SOURCE SET |
| 5482 | return false; |
| 5483 | } |
| 5484 | } |
| 5485 | // Callee is always self-hosted instrinsic, and cannot be content function. |
| 5486 | if (!emitCall(JSOp::CallIgnoresRv, argc)) { |
| 5487 | // [stack] IGNORED |
| 5488 | return false; |
| 5489 | } |
| 5490 | |
| 5491 | if (!emit1(JSOp::Pop)) { |
| 5492 | // [stack] |
| 5493 | return false; |
| 5494 | } |
| 5495 | |
| 5496 | MOZ_ASSERT(depth - int(argc) == bytecodeSection().stackDepth())do { static_assert( mozilla::detail::AssertionConditionType< decltype(depth - int(argc) == bytecodeSection().stackDepth()) >::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(depth - int(argc) == bytecodeSection().stackDepth()) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("depth - int(argc) == bytecodeSection().stackDepth()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5496); AnnotateMozCrashReason("MOZ_ASSERT" "(" "depth - int(argc) == bytecodeSection().stackDepth()" ")"); do { MOZ_CrashSequence(__null, 5496); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5497 | return true; |
| 5498 | } |
| 5499 | |
| 5500 | bool BytecodeEmitter::emitBigIntOp(BigIntLiteral* bigint) { |
| 5501 | GCThingIndex index; |
| 5502 | if (!perScriptData().gcThingList().append(bigint, &index)) { |
| 5503 | return false; |
| 5504 | } |
| 5505 | return emitGCIndexOp(JSOp::BigInt, index); |
| 5506 | } |
| 5507 | |
| 5508 | bool BytecodeEmitter::emitIterable(ParseNode* value, |
| 5509 | SelfHostedIter selfHostedIter, |
| 5510 | IteratorKind iterKind) { |
| 5511 | MOZ_ASSERT(getSelfHostedIterFor(value) == selfHostedIter)do { static_assert( mozilla::detail::AssertionConditionType< decltype(getSelfHostedIterFor(value) == selfHostedIter)>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(getSelfHostedIterFor(value) == selfHostedIter))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("getSelfHostedIterFor(value) == selfHostedIter" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5511); AnnotateMozCrashReason("MOZ_ASSERT" "(" "getSelfHostedIterFor(value) == selfHostedIter" ")"); do { MOZ_CrashSequence(__null, 5511); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5512 | |
| 5513 | if (!emitTree(value)) { |
| 5514 | // [stack] ITERABLE |
| 5515 | return false; |
| 5516 | } |
| 5517 | |
| 5518 | switch (selfHostedIter) { |
| 5519 | case SelfHostedIter::Deny: |
| 5520 | case SelfHostedIter::AllowContent: |
| 5521 | // [stack] ITERABLE |
| 5522 | return true; |
| 5523 | |
| 5524 | case SelfHostedIter::AllowContentWith: { |
| 5525 | // This is the following case: |
| 5526 | // |
| 5527 | // for (const nextValue of allowContentIterWith(items, usingIterator)) { |
| 5528 | // |
| 5529 | // `items` is emitted by `emitTree(value)` above, and the result is on the |
| 5530 | // stack as ITERABLE. |
| 5531 | // `usingIterator` is the value of `items[Symbol.iterator]`, that's |
| 5532 | // already retrieved. |
| 5533 | ListNode* argsList = value->as<CallNode>().args(); |
| 5534 | MOZ_ASSERT_IF(iterKind == IteratorKind::Sync, argsList->count() == 2)do { if (iterKind == IteratorKind::Sync) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(argsList ->count() == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 2))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5534); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 2" ")"); do { MOZ_CrashSequence(__null, 5534); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 5535 | MOZ_ASSERT_IF(iterKind == IteratorKind::Async, argsList->count() == 3)do { if (iterKind == IteratorKind::Async) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(argsList ->count() == 3)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 3))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 3" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5535); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 3" ")"); do { MOZ_CrashSequence(__null, 5535); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 5536 | |
| 5537 | if (!emitTree(argsList->head()->pn_next)) { |
| 5538 | // [stack] ITERABLE ITERFN |
| 5539 | return false; |
| 5540 | } |
| 5541 | |
| 5542 | // Async iterator has two possible iterators: An async iterator and a sync |
| 5543 | // iterator. |
| 5544 | if (iterKind == IteratorKind::Async) { |
| 5545 | if (!emitTree(argsList->head()->pn_next->pn_next)) { |
| 5546 | // [stack] ITERABLE ASYNC_ITERFN SYNC_ITERFN |
| 5547 | return false; |
| 5548 | } |
| 5549 | } |
| 5550 | |
| 5551 | // [stack] ITERABLE ASYNC_ITERFN? SYNC_ITERFN |
| 5552 | return true; |
| 5553 | } |
| 5554 | |
| 5555 | case SelfHostedIter::AllowContentWithNext: { |
| 5556 | // This is the following case: |
| 5557 | // |
| 5558 | // for (const nextValue of allowContentIterWithNext(iterator, next)) { |
| 5559 | // |
| 5560 | // `iterator` is emitted by `emitTree(value)` above, and the result is on |
| 5561 | // the stack as ITER. |
| 5562 | // `next` is the value of `iterator.next`, that's already retrieved. |
| 5563 | ListNode* argsList = value->as<CallNode>().args(); |
| 5564 | MOZ_ASSERT(argsList->count() == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 2))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5564); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 2" ")"); do { MOZ_CrashSequence(__null, 5564); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5565 | |
| 5566 | if (!emitTree(argsList->head()->pn_next)) { |
| 5567 | // [stack] ITER NEXT |
| 5568 | return false; |
| 5569 | } |
| 5570 | |
| 5571 | if (!emit1(JSOp::Swap)) { |
| 5572 | // [stack] NEXT ITER |
| 5573 | return false; |
| 5574 | } |
| 5575 | |
| 5576 | // [stack] NEXT ITER |
| 5577 | return true; |
| 5578 | } |
| 5579 | } |
| 5580 | |
| 5581 | MOZ_CRASH("invalid self-hosted iteration kind")do { do { } while (false); MOZ_ReportCrash("" "invalid self-hosted iteration kind" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5581); AnnotateMozCrashReason("MOZ_CRASH(" "invalid self-hosted iteration kind" ")"); do { MOZ_CrashSequence(__null, 5581); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 5582 | } |
| 5583 | |
| 5584 | bool BytecodeEmitter::emitIterator(SelfHostedIter selfHostedIter) { |
| 5585 | MOZ_ASSERT(selfHostedIter != SelfHostedIter::Deny ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" "[Symbol.iterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5588); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" "[Symbol.iterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence(__null, 5588); __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 5586 | emitterMode != BytecodeEmitter::SelfHosting,do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" "[Symbol.iterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5588); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" "[Symbol.iterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence(__null, 5588); __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 5587 | "[Symbol.iterator]() call is prohibited in self-hosted code "do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" "[Symbol.iterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5588); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" "[Symbol.iterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence(__null, 5588); __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 5588 | "because it can run user-modifiable iteration code")do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" "[Symbol.iterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5588); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" "[Symbol.iterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence(__null, 5588); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 5589 | |
| 5590 | if (selfHostedIter == SelfHostedIter::AllowContentWithNext) { |
| 5591 | // [stack] NEXT ITER |
| 5592 | |
| 5593 | // Nothing to do, stack already contains the iterator and its `next` method. |
| 5594 | return true; |
| 5595 | } |
| 5596 | |
| 5597 | if (selfHostedIter != SelfHostedIter::AllowContentWith) { |
| 5598 | // [stack] OBJ |
| 5599 | |
| 5600 | // Convert iterable to iterator. |
| 5601 | if (!emit1(JSOp::Dup)) { |
| 5602 | // [stack] OBJ OBJ |
| 5603 | return false; |
| 5604 | } |
| 5605 | if (!emit2(JSOp::Symbol, uint8_t(JS::SymbolCode::iterator))) { |
| 5606 | // [stack] OBJ OBJ @@ITERATOR |
| 5607 | return false; |
| 5608 | } |
| 5609 | if (!emitElemOpBase(JSOp::GetElem)) { |
| 5610 | // [stack] OBJ ITERFN |
| 5611 | return false; |
| 5612 | } |
| 5613 | } |
| 5614 | |
| 5615 | if (!emit1(JSOp::Swap)) { |
| 5616 | // [stack] ITERFN OBJ |
| 5617 | return false; |
| 5618 | } |
| 5619 | if (!emitCall(getIterCallOp(JSOp::CallIter, selfHostedIter), 0)) { |
| 5620 | // [stack] ITER |
| 5621 | return false; |
| 5622 | } |
| 5623 | if (!emitCheckIsObj(CheckIsObjectKind::GetIterator)) { |
| 5624 | // [stack] ITER |
| 5625 | return false; |
| 5626 | } |
| 5627 | if (!emit1(JSOp::Dup)) { |
| 5628 | // [stack] ITER ITER |
| 5629 | return false; |
| 5630 | } |
| 5631 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::next())) { |
| 5632 | // [stack] ITER NEXT |
| 5633 | return false; |
| 5634 | } |
| 5635 | if (!emit1(JSOp::Swap)) { |
| 5636 | // [stack] NEXT ITER |
| 5637 | return false; |
| 5638 | } |
| 5639 | return true; |
| 5640 | } |
| 5641 | |
| 5642 | bool BytecodeEmitter::emitAsyncIterator(SelfHostedIter selfHostedIter) { |
| 5643 | MOZ_ASSERT(selfHostedIter != SelfHostedIter::AllowContentWithNext)do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::AllowContentWithNext )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(selfHostedIter != SelfHostedIter::AllowContentWithNext ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "selfHostedIter != SelfHostedIter::AllowContentWithNext", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5643); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::AllowContentWithNext" ")"); do { MOZ_CrashSequence(__null, 5643); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5644 | MOZ_ASSERT(selfHostedIter != SelfHostedIter::Deny ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" "[Symbol.asyncIterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5647); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" "[Symbol.asyncIterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence(__null, 5647); __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 5645 | emitterMode != BytecodeEmitter::SelfHosting,do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" "[Symbol.asyncIterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5647); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" "[Symbol.asyncIterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence(__null, 5647); __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 5646 | "[Symbol.asyncIterator]() call is prohibited in self-hosted code "do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" "[Symbol.asyncIterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5647); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" "[Symbol.asyncIterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence(__null, 5647); __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 5647 | "because it can run user-modifiable iteration code")do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter != SelfHostedIter ::Deny || emitterMode != BytecodeEmitter::SelfHosting))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" " (" "[Symbol.asyncIterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5647); AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter != SelfHostedIter::Deny || emitterMode != BytecodeEmitter::SelfHosting" ") (" "[Symbol.asyncIterator]() call is prohibited in self-hosted code " "because it can run user-modifiable iteration code" ")"); do { MOZ_CrashSequence(__null, 5647); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 5648 | |
| 5649 | if (selfHostedIter != SelfHostedIter::AllowContentWith) { |
| 5650 | // [stack] OBJ |
| 5651 | |
| 5652 | // Convert iterable to iterator. |
| 5653 | if (!emit1(JSOp::Dup)) { |
| 5654 | // [stack] OBJ OBJ |
| 5655 | return false; |
| 5656 | } |
| 5657 | if (!emit2(JSOp::Symbol, uint8_t(JS::SymbolCode::asyncIterator))) { |
| 5658 | // [stack] OBJ OBJ @@ASYNCITERATOR |
| 5659 | return false; |
| 5660 | } |
| 5661 | if (!emitElemOpBase(JSOp::GetElem)) { |
| 5662 | // [stack] OBJ ASYNC_ITERFN |
| 5663 | return false; |
| 5664 | } |
| 5665 | } else { |
| 5666 | // [stack] OBJ ASYNC_ITERFN SYNC_ITERFN |
| 5667 | |
| 5668 | if (!emitElemOpBase(JSOp::Swap)) { |
| 5669 | // [stack] OBJ SYNC_ITERFN ASYNC_ITERFN |
| 5670 | return false; |
| 5671 | } |
| 5672 | } |
| 5673 | |
| 5674 | InternalIfEmitter ifAsyncIterIsUndefined(this); |
| 5675 | if (!emit1(JSOp::IsNullOrUndefined)) { |
| 5676 | // [stack] OBJ SYNC_ITERFN? ASYNC_ITERFN NULL-OR-UNDEF |
| 5677 | return false; |
| 5678 | } |
| 5679 | if (!ifAsyncIterIsUndefined.emitThenElse()) { |
| 5680 | // [stack] OBJ SYNC_ITERFN? ASYNC_ITERFN |
| 5681 | return false; |
| 5682 | } |
| 5683 | |
| 5684 | if (!emit1(JSOp::Pop)) { |
| 5685 | // [stack] OBJ SYNC_ITERFN? |
| 5686 | return false; |
| 5687 | } |
| 5688 | |
| 5689 | if (selfHostedIter != SelfHostedIter::AllowContentWith) { |
| 5690 | if (!emit1(JSOp::Dup)) { |
| 5691 | // [stack] OBJ OBJ |
| 5692 | return false; |
| 5693 | } |
| 5694 | if (!emit2(JSOp::Symbol, uint8_t(JS::SymbolCode::iterator))) { |
| 5695 | // [stack] OBJ OBJ @@ITERATOR |
| 5696 | return false; |
| 5697 | } |
| 5698 | if (!emitElemOpBase(JSOp::GetElem)) { |
| 5699 | // [stack] OBJ SYNC_ITERFN |
| 5700 | return false; |
| 5701 | } |
| 5702 | } else { |
| 5703 | // [stack] OBJ SYNC_ITERFN |
| 5704 | } |
| 5705 | |
| 5706 | if (!emit1(JSOp::Swap)) { |
| 5707 | // [stack] SYNC_ITERFN OBJ |
| 5708 | return false; |
| 5709 | } |
| 5710 | if (!emitCall(getIterCallOp(JSOp::CallIter, selfHostedIter), 0)) { |
| 5711 | // [stack] ITER |
| 5712 | return false; |
| 5713 | } |
| 5714 | if (!emitCheckIsObj(CheckIsObjectKind::GetIterator)) { |
| 5715 | // [stack] ITER |
| 5716 | return false; |
| 5717 | } |
| 5718 | |
| 5719 | if (!emit1(JSOp::Dup)) { |
| 5720 | // [stack] ITER ITER |
| 5721 | return false; |
| 5722 | } |
| 5723 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::next())) { |
| 5724 | // [stack] ITER SYNCNEXT |
| 5725 | return false; |
| 5726 | } |
| 5727 | |
| 5728 | if (!emit1(JSOp::ToAsyncIter)) { |
| 5729 | // [stack] ITER |
| 5730 | return false; |
| 5731 | } |
| 5732 | |
| 5733 | if (!ifAsyncIterIsUndefined.emitElse()) { |
| 5734 | // [stack] OBJ SYNC_ITERFN? ASYNC_ITERFN |
| 5735 | return false; |
| 5736 | } |
| 5737 | |
| 5738 | if (selfHostedIter == SelfHostedIter::AllowContentWith) { |
| 5739 | if (!emit1(JSOp::Swap)) { |
| 5740 | // [stack] OBJ ASYNC_ITERFN SYNC_ITERFN |
| 5741 | return false; |
| 5742 | } |
| 5743 | if (!emit1(JSOp::Pop)) { |
| 5744 | // [stack] OBJ ASYNC_ITERFN |
| 5745 | return false; |
| 5746 | } |
| 5747 | } |
| 5748 | |
| 5749 | if (!emit1(JSOp::Swap)) { |
| 5750 | // [stack] ASYNC_ITERFN OBJ |
| 5751 | return false; |
| 5752 | } |
| 5753 | if (!emitCall(getIterCallOp(JSOp::CallIter, selfHostedIter), 0)) { |
| 5754 | // [stack] ITER |
| 5755 | return false; |
| 5756 | } |
| 5757 | if (!emitCheckIsObj(CheckIsObjectKind::GetAsyncIterator)) { |
| 5758 | // [stack] ITER |
| 5759 | return false; |
| 5760 | } |
| 5761 | |
| 5762 | if (!ifAsyncIterIsUndefined.emitEnd()) { |
| 5763 | // [stack] ITER |
| 5764 | return false; |
| 5765 | } |
| 5766 | |
| 5767 | if (!emit1(JSOp::Dup)) { |
| 5768 | // [stack] ITER ITER |
| 5769 | return false; |
| 5770 | } |
| 5771 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::next())) { |
| 5772 | // [stack] ITER NEXT |
| 5773 | return false; |
| 5774 | } |
| 5775 | if (!emit1(JSOp::Swap)) { |
| 5776 | // [stack] NEXT ITER |
| 5777 | return false; |
| 5778 | } |
| 5779 | |
| 5780 | return true; |
| 5781 | } |
| 5782 | |
| 5783 | bool BytecodeEmitter::emitSpread(SelfHostedIter selfHostedIter) { |
| 5784 | LoopControl loopInfo(this, StatementKind::Spread); |
| 5785 | |
| 5786 | if (!loopInfo.emitLoopHead(this, Nothing())) { |
| 5787 | // [stack] NEXT ITER ARR I |
| 5788 | return false; |
| 5789 | } |
| 5790 | |
| 5791 | { |
| 5792 | #ifdef DEBUG1 |
| 5793 | auto loopDepth = bytecodeSection().stackDepth(); |
| 5794 | #endif |
| 5795 | |
| 5796 | // Spread operations can't contain |continue|, so don't bother setting loop |
| 5797 | // and enclosing "update" offsets, as we do with for-loops. |
| 5798 | |
| 5799 | if (!emitDupAt(3, 2)) { |
| 5800 | // [stack] NEXT ITER ARR I NEXT ITER |
| 5801 | return false; |
| 5802 | } |
| 5803 | if (!emitIteratorNext(Nothing(), IteratorKind::Sync, selfHostedIter)) { |
| 5804 | // [stack] NEXT ITER ARR I RESULT |
| 5805 | return false; |
| 5806 | } |
| 5807 | if (!emit1(JSOp::Dup)) { |
| 5808 | // [stack] NEXT ITER ARR I RESULT RESULT |
| 5809 | return false; |
| 5810 | } |
| 5811 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::done())) { |
| 5812 | // [stack] NEXT ITER ARR I RESULT DONE |
| 5813 | return false; |
| 5814 | } |
| 5815 | if (!emitJump(JSOp::JumpIfTrue, &loopInfo.breaks)) { |
| 5816 | // [stack] NEXT ITER ARR I RESULT |
| 5817 | return false; |
| 5818 | } |
| 5819 | |
| 5820 | // Emit code to assign result.value to the iteration variable. |
| 5821 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::value())) { |
| 5822 | // [stack] NEXT ITER ARR I VALUE |
| 5823 | return false; |
| 5824 | } |
| 5825 | if (!emit1(JSOp::InitElemInc)) { |
| 5826 | // [stack] NEXT ITER ARR I |
| 5827 | return false; |
| 5828 | } |
| 5829 | |
| 5830 | if (!loopInfo.emitLoopEnd(this, JSOp::Goto, TryNoteKind::ForOf)) { |
| 5831 | // [stack] NEXT ITER ARR I |
| 5832 | return false; |
| 5833 | } |
| 5834 | |
| 5835 | MOZ_ASSERT(bytecodeSection().stackDepth() == loopDepth)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() == loopDepth)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() == loopDepth))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() == loopDepth" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5835); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() == loopDepth" ")"); do { MOZ_CrashSequence(__null, 5835); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5836 | } |
| 5837 | |
| 5838 | // When we leave the loop body and jump to this point, the result value is |
| 5839 | // still on the stack. Account for that by updating the stack depth |
| 5840 | // manually. |
| 5841 | bytecodeSection().setStackDepth(bytecodeSection().stackDepth() + 1); |
| 5842 | |
| 5843 | // No continues should occur in spreads. |
| 5844 | MOZ_ASSERT(!loopInfo.continues.offset.valid())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!loopInfo.continues.offset.valid())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!loopInfo.continues.offset.valid ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!loopInfo.continues.offset.valid()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5844); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!loopInfo.continues.offset.valid()" ")"); do { MOZ_CrashSequence(__null, 5844); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5845 | |
| 5846 | if (!emit2(JSOp::Pick, 4)) { |
| 5847 | // [stack] ITER ARR I RESULT NEXT |
| 5848 | return false; |
| 5849 | } |
| 5850 | if (!emit2(JSOp::Pick, 4)) { |
| 5851 | // [stack] ARR I RESULT NEXT ITER |
| 5852 | return false; |
| 5853 | } |
| 5854 | |
| 5855 | return emitPopN(3); |
| 5856 | // [stack] ARR I |
| 5857 | } |
| 5858 | |
| 5859 | bool BytecodeEmitter::emitInitializeForInOrOfTarget(TernaryNode* forHead) { |
| 5860 | MOZ_ASSERT(forHead->isKind(ParseNodeKind::ForIn) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(forHead->isKind(ParseNodeKind::ForIn) || forHead-> isKind(ParseNodeKind::ForOf))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(forHead->isKind(ParseNodeKind ::ForIn) || forHead->isKind(ParseNodeKind::ForOf)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forHead->isKind(ParseNodeKind::ForIn) || forHead->isKind(ParseNodeKind::ForOf)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5861); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forHead->isKind(ParseNodeKind::ForIn) || forHead->isKind(ParseNodeKind::ForOf)" ")"); do { MOZ_CrashSequence(__null, 5861); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 5861 | forHead->isKind(ParseNodeKind::ForOf))do { static_assert( mozilla::detail::AssertionConditionType< decltype(forHead->isKind(ParseNodeKind::ForIn) || forHead-> isKind(ParseNodeKind::ForOf))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(forHead->isKind(ParseNodeKind ::ForIn) || forHead->isKind(ParseNodeKind::ForOf)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forHead->isKind(ParseNodeKind::ForIn) || forHead->isKind(ParseNodeKind::ForOf)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5861); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forHead->isKind(ParseNodeKind::ForIn) || forHead->isKind(ParseNodeKind::ForOf)" ")"); do { MOZ_CrashSequence(__null, 5861); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5862 | |
| 5863 | MOZ_ASSERT(bytecodeSection().stackDepth() >= 1,do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() >= 1)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() >= 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() >= 1" " (" "must have a per-iteration value for initializing" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5864); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() >= 1" ") (" "must have a per-iteration value for initializing" ")"); do { MOZ_CrashSequence(__null, 5864); __attribute__((nomerge)) :: abort(); } while (false); } } while (false) |
| 5864 | "must have a per-iteration value for initializing")do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() >= 1)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() >= 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() >= 1" " (" "must have a per-iteration value for initializing" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5864); AnnotateMozCrashReason ("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() >= 1" ") (" "must have a per-iteration value for initializing" ")"); do { MOZ_CrashSequence(__null, 5864); __attribute__((nomerge)) :: abort(); } while (false); } } while (false); |
| 5865 | |
| 5866 | ParseNode* target = forHead->kid1(); |
| 5867 | MOZ_ASSERT(!forHead->kid2())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!forHead->kid2())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!forHead->kid2()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!forHead->kid2()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5867); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!forHead->kid2()" ")"); do { MOZ_CrashSequence(__null, 5867); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5868 | |
| 5869 | // If the for-in/of loop didn't have a variable declaration, per-loop |
| 5870 | // initialization is just assigning the iteration value to a target |
| 5871 | // expression. |
| 5872 | if (!target->is<DeclarationListNode>()) { |
| 5873 | return emitAssignmentOrInit(ParseNodeKind::AssignExpr, target, nullptr); |
| 5874 | // [stack] ... ITERVAL |
| 5875 | } |
| 5876 | |
| 5877 | // Otherwise, per-loop initialization is (possibly) declaration |
| 5878 | // initialization. If the declaration is a lexical declaration, it must be |
| 5879 | // initialized. If the declaration is a variable declaration, an |
| 5880 | // assignment to that name (which does *not* necessarily assign to the |
| 5881 | // variable!) must be generated. |
| 5882 | |
| 5883 | auto* declarationList = &target->as<DeclarationListNode>(); |
| 5884 | if (!updateSourceCoordNotes(declarationList->pn_pos.begin)) { |
| 5885 | return false; |
| 5886 | } |
| 5887 | |
| 5888 | target = declarationList->singleBinding(); |
| 5889 | |
| 5890 | NameNode* nameNode = nullptr; |
| 5891 | if (target->isKind(ParseNodeKind::Name)) { |
| 5892 | nameNode = &target->as<NameNode>(); |
| 5893 | } else if (target->isKind(ParseNodeKind::AssignExpr)) { |
| 5894 | BinaryNode* assignNode = &target->as<BinaryNode>(); |
| 5895 | if (assignNode->left()->is<NameNode>()) { |
| 5896 | nameNode = &assignNode->left()->as<NameNode>(); |
| 5897 | } |
| 5898 | } |
| 5899 | |
| 5900 | if (nameNode) { |
| 5901 | auto nameAtom = nameNode->name(); |
| 5902 | NameOpEmitter noe(this, nameAtom, NameOpEmitter::Kind::Initialize); |
| 5903 | if (!noe.prepareForRhs()) { |
| 5904 | return false; |
| 5905 | } |
| 5906 | if (noe.emittedBindOp()) { |
| 5907 | // Per-iteration initialization in for-in/of loops computes the |
| 5908 | // iteration value *before* initializing. Thus the initializing |
| 5909 | // value may be buried under a bind-specific value on the stack. |
| 5910 | // Swap it to the top of the stack. |
| 5911 | MOZ_ASSERT(bytecodeSection().stackDepth() >= 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() >= 2)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() >= 2))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() >= 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5911); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() >= 2" ")"); do { MOZ_CrashSequence(__null, 5911); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5912 | if (!emit1(JSOp::Swap)) { |
| 5913 | return false; |
| 5914 | } |
| 5915 | } else { |
| 5916 | // In cases of emitting a frame slot or environment slot, |
| 5917 | // nothing needs be done. |
| 5918 | MOZ_ASSERT(bytecodeSection().stackDepth() >= 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() >= 1)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() >= 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() >= 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5918); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() >= 1" ")"); do { MOZ_CrashSequence(__null, 5918); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5919 | } |
| 5920 | |
| 5921 | if (declarationList->isKind(ParseNodeKind::UsingDecl)) { |
| 5922 | if (!innermostEmitterScope()->prepareForDisposableAssignment( |
| 5923 | UsingHint::Sync)) { |
| 5924 | // [stack] ENV? V |
| 5925 | return false; |
| 5926 | } |
| 5927 | } else if (declarationList->isKind(ParseNodeKind::AwaitUsingDecl)) { |
| 5928 | if (!innermostEmitterScope()->prepareForDisposableAssignment( |
| 5929 | UsingHint::Async)) { |
| 5930 | // [stack] ENV? V |
| 5931 | return false; |
| 5932 | } |
| 5933 | } |
| 5934 | |
| 5935 | if (!noe.emitAssignment()) { |
| 5936 | return false; |
| 5937 | } |
| 5938 | |
| 5939 | // The caller handles removing the iteration value from the stack. |
| 5940 | return true; |
| 5941 | } |
| 5942 | |
| 5943 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(!target->isKind(ParseNodeKind::AssignExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!target->isKind(ParseNodeKind::AssignExpr)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("!target->isKind(ParseNodeKind::AssignExpr)" " (" "for-in/of loop destructuring declarations can't have initializers" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5945 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!target->isKind(ParseNodeKind::AssignExpr)" ") (" "for-in/of loop destructuring declarations can't have initializers" ")"); do { MOZ_CrashSequence(__null, 5945); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 5944 | !target->isKind(ParseNodeKind::AssignExpr),do { static_assert( mozilla::detail::AssertionConditionType< decltype(!target->isKind(ParseNodeKind::AssignExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!target->isKind(ParseNodeKind::AssignExpr)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("!target->isKind(ParseNodeKind::AssignExpr)" " (" "for-in/of loop destructuring declarations can't have initializers" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5945 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!target->isKind(ParseNodeKind::AssignExpr)" ") (" "for-in/of loop destructuring declarations can't have initializers" ")"); do { MOZ_CrashSequence(__null, 5945); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 5945 | "for-in/of loop destructuring declarations can't have initializers")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!target->isKind(ParseNodeKind::AssignExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!target->isKind(ParseNodeKind::AssignExpr)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("!target->isKind(ParseNodeKind::AssignExpr)" " (" "for-in/of loop destructuring declarations can't have initializers" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5945 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!target->isKind(ParseNodeKind::AssignExpr)" ") (" "for-in/of loop destructuring declarations can't have initializers" ")"); do { MOZ_CrashSequence(__null, 5945); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5946 | |
| 5947 | MOZ_ASSERT(target->isKind(ParseNodeKind::ArrayExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(target->isKind(ParseNodeKind::ArrayExpr) || target ->isKind(ParseNodeKind::ObjectExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(target->isKind(ParseNodeKind ::ArrayExpr) || target->isKind(ParseNodeKind::ObjectExpr)) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("target->isKind(ParseNodeKind::ArrayExpr) || target->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5948); AnnotateMozCrashReason("MOZ_ASSERT" "(" "target->isKind(ParseNodeKind::ArrayExpr) || target->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 5948); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 5948 | target->isKind(ParseNodeKind::ObjectExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(target->isKind(ParseNodeKind::ArrayExpr) || target ->isKind(ParseNodeKind::ObjectExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(target->isKind(ParseNodeKind ::ArrayExpr) || target->isKind(ParseNodeKind::ObjectExpr)) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("target->isKind(ParseNodeKind::ArrayExpr) || target->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5948); AnnotateMozCrashReason("MOZ_ASSERT" "(" "target->isKind(ParseNodeKind::ArrayExpr) || target->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 5948); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5949 | return emitDestructuringOps(&target->as<ListNode>(), |
| 5950 | DestructuringFlavor::Declaration, |
| 5951 | SelfHostedIter::Deny); |
| 5952 | } |
| 5953 | |
| 5954 | bool BytecodeEmitter::emitForOf(ForNode* forOfLoop, |
| 5955 | const EmitterScope* headLexicalEmitterScope) { |
| 5956 | MOZ_ASSERT(forOfLoop->isKind(ParseNodeKind::ForStmt))do { static_assert( mozilla::detail::AssertionConditionType< decltype(forOfLoop->isKind(ParseNodeKind::ForStmt))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(forOfLoop->isKind(ParseNodeKind::ForStmt)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forOfLoop->isKind(ParseNodeKind::ForStmt)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5956); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forOfLoop->isKind(ParseNodeKind::ForStmt)" ")"); do { MOZ_CrashSequence(__null, 5956); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5957 | |
| 5958 | TernaryNode* forOfHead = forOfLoop->head(); |
| 5959 | MOZ_ASSERT(forOfHead->isKind(ParseNodeKind::ForOf))do { static_assert( mozilla::detail::AssertionConditionType< decltype(forOfHead->isKind(ParseNodeKind::ForOf))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(forOfHead->isKind(ParseNodeKind::ForOf)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forOfHead->isKind(ParseNodeKind::ForOf)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 5959); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forOfHead->isKind(ParseNodeKind::ForOf)" ")"); do { MOZ_CrashSequence(__null, 5959); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 5960 | |
| 5961 | unsigned iflags = forOfLoop->iflags(); |
| 5962 | IteratorKind iterKind = |
| 5963 | (iflags & JSITER_FORAWAITOF0x80) ? IteratorKind::Async : IteratorKind::Sync; |
| 5964 | MOZ_ASSERT_IF(iterKind == IteratorKind::Async, sc->isSuspendableContext())do { if (iterKind == IteratorKind::Async) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(sc-> isSuspendableContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isSuspendableContext( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("sc->isSuspendableContext()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5964); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isSuspendableContext()" ")"); do { MOZ_CrashSequence(__null, 5964); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 5965 | MOZ_ASSERT_IF(iterKind == IteratorKind::Async,do { if (iterKind == IteratorKind::Async) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(sc-> asSuspendableContext()->isAsync())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->asSuspendableContext( )->isAsync()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("sc->asSuspendableContext()->isAsync()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5966); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->asSuspendableContext()->isAsync()" ")"); do { MOZ_CrashSequence(__null, 5966); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 5966 | sc->asSuspendableContext()->isAsync())do { if (iterKind == IteratorKind::Async) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(sc-> asSuspendableContext()->isAsync())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->asSuspendableContext( )->isAsync()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("sc->asSuspendableContext()->isAsync()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 5966); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->asSuspendableContext()->isAsync()" ")"); do { MOZ_CrashSequence(__null, 5966); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 5967 | |
| 5968 | ParseNode* forHeadExpr = forOfHead->kid3(); |
| 5969 | |
| 5970 | // Certain builtins (e.g. Array.from) are implemented in self-hosting |
| 5971 | // as for-of loops. |
| 5972 | auto selfHostedIter = getSelfHostedIterFor(forHeadExpr); |
| 5973 | ForOfEmitter::HeadUsingDeclarationKind headUsingDeclKind = |
| 5974 | ForOfEmitter::HeadUsingDeclarationKind::None; |
| 5975 | if (forOfHead->kid1()->isKind(ParseNodeKind::UsingDecl)) { |
| 5976 | headUsingDeclKind = ForOfEmitter::HeadUsingDeclarationKind::Sync; |
| 5977 | } else if (forOfHead->kid1()->isKind(ParseNodeKind::AwaitUsingDecl)) { |
| 5978 | headUsingDeclKind = ForOfEmitter::HeadUsingDeclarationKind::Async; |
| 5979 | } |
| 5980 | |
| 5981 | ForOfEmitter forOf(this, headLexicalEmitterScope, selfHostedIter, iterKind, |
| 5982 | headUsingDeclKind); |
| 5983 | |
| 5984 | if (!forOf.emitIterated()) { |
| 5985 | // [stack] |
| 5986 | return false; |
| 5987 | } |
| 5988 | |
| 5989 | if (!updateSourceCoordNotes(forHeadExpr->pn_pos.begin)) { |
| 5990 | return false; |
| 5991 | } |
| 5992 | if (!markStepBreakpoint()) { |
| 5993 | return false; |
| 5994 | } |
| 5995 | if (!emitIterable(forHeadExpr, selfHostedIter, iterKind)) { |
| 5996 | // [stack] ITERABLE |
| 5997 | return false; |
| 5998 | } |
| 5999 | |
| 6000 | if (headLexicalEmitterScope) { |
| 6001 | DebugOnly<ParseNode*> forOfTarget = forOfHead->kid1(); |
| 6002 | MOZ_ASSERT(forOfTarget->isKind(ParseNodeKind::LetDecl) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget ->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind (ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind ::AwaitUsingDecl))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(forOfTarget->isKind(ParseNodeKind ::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl ) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget ->isKind(ParseNodeKind::AwaitUsingDecl)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6005); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl)" ")"); do { MOZ_CrashSequence(__null, 6005); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6003 | forOfTarget->isKind(ParseNodeKind::ConstDecl) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget ->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind (ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind ::AwaitUsingDecl))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(forOfTarget->isKind(ParseNodeKind ::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl ) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget ->isKind(ParseNodeKind::AwaitUsingDecl)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6005); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl)" ")"); do { MOZ_CrashSequence(__null, 6005); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6004 | forOfTarget->isKind(ParseNodeKind::UsingDecl) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget ->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind (ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind ::AwaitUsingDecl))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(forOfTarget->isKind(ParseNodeKind ::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl ) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget ->isKind(ParseNodeKind::AwaitUsingDecl)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6005); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl)" ")"); do { MOZ_CrashSequence(__null, 6005); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6005 | forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl))do { static_assert( mozilla::detail::AssertionConditionType< decltype(forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget ->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind (ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind ::AwaitUsingDecl))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(forOfTarget->isKind(ParseNodeKind ::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl ) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget ->isKind(ParseNodeKind::AwaitUsingDecl)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6005); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forOfTarget->isKind(ParseNodeKind::LetDecl) || forOfTarget->isKind(ParseNodeKind::ConstDecl) || forOfTarget->isKind(ParseNodeKind::UsingDecl) || forOfTarget->isKind(ParseNodeKind::AwaitUsingDecl)" ")"); do { MOZ_CrashSequence(__null, 6005); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6006 | } |
| 6007 | |
| 6008 | if (!forOf.emitInitialize(forOfHead->pn_pos.begin)) { |
| 6009 | // [stack] NEXT ITER VALUE |
| 6010 | return false; |
| 6011 | } |
| 6012 | |
| 6013 | if (!emitInitializeForInOrOfTarget(forOfHead)) { |
| 6014 | // [stack] NEXT ITER VALUE |
| 6015 | return false; |
| 6016 | } |
| 6017 | |
| 6018 | if (!forOf.emitBody()) { |
| 6019 | // [stack] NEXT ITER UNDEF |
| 6020 | return false; |
| 6021 | } |
| 6022 | |
| 6023 | // Perform the loop body. |
| 6024 | ParseNode* forBody = forOfLoop->body(); |
| 6025 | if (!emitTree(forBody)) { |
| 6026 | // [stack] NEXT ITER UNDEF |
| 6027 | return false; |
| 6028 | } |
| 6029 | |
| 6030 | if (!forOf.emitEnd(forHeadExpr->pn_pos.begin)) { |
| 6031 | // [stack] |
| 6032 | return false; |
| 6033 | } |
| 6034 | |
| 6035 | return true; |
| 6036 | } |
| 6037 | |
| 6038 | bool BytecodeEmitter::emitForIn(ForNode* forInLoop, |
| 6039 | const EmitterScope* headLexicalEmitterScope) { |
| 6040 | TernaryNode* forInHead = forInLoop->head(); |
| 6041 | MOZ_ASSERT(forInHead->isKind(ParseNodeKind::ForIn))do { static_assert( mozilla::detail::AssertionConditionType< decltype(forInHead->isKind(ParseNodeKind::ForIn))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(forInHead->isKind(ParseNodeKind::ForIn)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forInHead->isKind(ParseNodeKind::ForIn)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6041); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forInHead->isKind(ParseNodeKind::ForIn)" ")"); do { MOZ_CrashSequence(__null, 6041); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6042 | |
| 6043 | ForInEmitter forIn(this, headLexicalEmitterScope); |
| 6044 | |
| 6045 | // Annex B: Evaluate the var-initializer expression if present. |
| 6046 | // |for (var i = initializer in expr) { ... }| |
| 6047 | ParseNode* forInTarget = forInHead->kid1(); |
| 6048 | if (forInTarget->is<DeclarationListNode>()) { |
| 6049 | auto* declarationList = &forInTarget->as<DeclarationListNode>(); |
| 6050 | |
| 6051 | ParseNode* decl = declarationList->singleBinding(); |
| 6052 | if (decl->isKind(ParseNodeKind::AssignExpr)) { |
| 6053 | BinaryNode* assignNode = &decl->as<BinaryNode>(); |
| 6054 | if (assignNode->left()->is<NameNode>()) { |
| 6055 | NameNode* nameNode = &assignNode->left()->as<NameNode>(); |
| 6056 | ParseNode* initializer = assignNode->right(); |
| 6057 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(forInTarget->isKind(ParseNodeKind::VarStmt))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(forInTarget->isKind(ParseNodeKind::VarStmt)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("forInTarget->isKind(ParseNodeKind::VarStmt)" " (" "for-in initializers are only permitted for |var| declarations" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6059 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forInTarget->isKind(ParseNodeKind::VarStmt)" ") (" "for-in initializers are only permitted for |var| declarations" ")"); do { MOZ_CrashSequence(__null, 6059); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6058 | forInTarget->isKind(ParseNodeKind::VarStmt),do { static_assert( mozilla::detail::AssertionConditionType< decltype(forInTarget->isKind(ParseNodeKind::VarStmt))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(forInTarget->isKind(ParseNodeKind::VarStmt)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("forInTarget->isKind(ParseNodeKind::VarStmt)" " (" "for-in initializers are only permitted for |var| declarations" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6059 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forInTarget->isKind(ParseNodeKind::VarStmt)" ") (" "for-in initializers are only permitted for |var| declarations" ")"); do { MOZ_CrashSequence(__null, 6059); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6059 | "for-in initializers are only permitted for |var| declarations")do { static_assert( mozilla::detail::AssertionConditionType< decltype(forInTarget->isKind(ParseNodeKind::VarStmt))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(forInTarget->isKind(ParseNodeKind::VarStmt)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("forInTarget->isKind(ParseNodeKind::VarStmt)" " (" "for-in initializers are only permitted for |var| declarations" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6059 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forInTarget->isKind(ParseNodeKind::VarStmt)" ") (" "for-in initializers are only permitted for |var| declarations" ")"); do { MOZ_CrashSequence(__null, 6059); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6060 | |
| 6061 | if (!updateSourceCoordNotes(decl->pn_pos.begin)) { |
| 6062 | return false; |
| 6063 | } |
| 6064 | |
| 6065 | auto nameAtom = nameNode->name(); |
| 6066 | NameOpEmitter noe(this, nameAtom, NameOpEmitter::Kind::Initialize); |
| 6067 | if (!noe.prepareForRhs()) { |
| 6068 | return false; |
| 6069 | } |
| 6070 | if (!emitInitializer(initializer, nameNode)) { |
| 6071 | return false; |
| 6072 | } |
| 6073 | if (!noe.emitAssignment()) { |
| 6074 | return false; |
| 6075 | } |
| 6076 | |
| 6077 | // Pop the initializer. |
| 6078 | if (!emit1(JSOp::Pop)) { |
| 6079 | return false; |
| 6080 | } |
| 6081 | } |
| 6082 | } |
| 6083 | } |
| 6084 | |
| 6085 | if (!forIn.emitIterated()) { |
| 6086 | // [stack] |
| 6087 | return false; |
| 6088 | } |
| 6089 | |
| 6090 | // Evaluate the expression being iterated. |
| 6091 | ParseNode* expr = forInHead->kid3(); |
| 6092 | |
| 6093 | if (!updateSourceCoordNotes(expr->pn_pos.begin)) { |
| 6094 | return false; |
| 6095 | } |
| 6096 | if (!markStepBreakpoint()) { |
| 6097 | return false; |
| 6098 | } |
| 6099 | if (!emitTree(expr)) { |
| 6100 | // [stack] EXPR |
| 6101 | return false; |
| 6102 | } |
| 6103 | |
| 6104 | MOZ_ASSERT(forInLoop->iflags() == 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(forInLoop->iflags() == 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(forInLoop->iflags() == 0) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forInLoop->iflags() == 0" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6104); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forInLoop->iflags() == 0" ")"); do { MOZ_CrashSequence(__null, 6104); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6105 | |
| 6106 | MOZ_ASSERT_IF(headLexicalEmitterScope,do { if (headLexicalEmitterScope) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(forInTarget-> isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind ::ConstDecl))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(forInTarget->isKind(ParseNodeKind ::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("forInTarget->isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6108); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forInTarget->isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl)" ")"); do { MOZ_CrashSequence(__null, 6108); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 6107 | forInTarget->isKind(ParseNodeKind::LetDecl) ||do { if (headLexicalEmitterScope) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(forInTarget-> isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind ::ConstDecl))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(forInTarget->isKind(ParseNodeKind ::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("forInTarget->isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6108); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forInTarget->isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl)" ")"); do { MOZ_CrashSequence(__null, 6108); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 6108 | forInTarget->isKind(ParseNodeKind::ConstDecl))do { if (headLexicalEmitterScope) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(forInTarget-> isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind ::ConstDecl))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(forInTarget->isKind(ParseNodeKind ::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("forInTarget->isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6108); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forInTarget->isKind(ParseNodeKind::LetDecl) || forInTarget->isKind(ParseNodeKind::ConstDecl)" ")"); do { MOZ_CrashSequence(__null, 6108); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 6109 | |
| 6110 | if (!forIn.emitInitialize()) { |
| 6111 | // [stack] ITER ITERVAL |
| 6112 | return false; |
| 6113 | } |
| 6114 | |
| 6115 | if (!emitInitializeForInOrOfTarget(forInHead)) { |
| 6116 | // [stack] ITER ITERVAL |
| 6117 | return false; |
| 6118 | } |
| 6119 | |
| 6120 | if (!forIn.emitBody()) { |
| 6121 | // [stack] ITER ITERVAL |
| 6122 | return false; |
| 6123 | } |
| 6124 | |
| 6125 | // Perform the loop body. |
| 6126 | ParseNode* forBody = forInLoop->body(); |
| 6127 | if (!emitTree(forBody)) { |
| 6128 | // [stack] ITER ITERVAL |
| 6129 | return false; |
| 6130 | } |
| 6131 | |
| 6132 | if (!forIn.emitEnd(forInHead->pn_pos.begin)) { |
| 6133 | // [stack] |
| 6134 | return false; |
| 6135 | } |
| 6136 | |
| 6137 | return true; |
| 6138 | } |
| 6139 | |
| 6140 | /* C-style `for (init; cond; update) ...` loop. */ |
| 6141 | bool BytecodeEmitter::emitCStyleFor( |
| 6142 | ForNode* forNode, const EmitterScope* headLexicalEmitterScope) { |
| 6143 | TernaryNode* forHead = forNode->head(); |
| 6144 | ParseNode* forBody = forNode->body(); |
| 6145 | ParseNode* init = forHead->kid1(); |
| 6146 | ParseNode* cond = forHead->kid2(); |
| 6147 | ParseNode* update = forHead->kid3(); |
| 6148 | bool isLet = init && init->isKind(ParseNodeKind::LetDecl); |
| 6149 | |
| 6150 | CForEmitter cfor(this, isLet ? headLexicalEmitterScope : nullptr); |
| 6151 | |
| 6152 | if (!cfor.emitInit(init ? Some(init->pn_pos.begin) : Nothing())) { |
| 6153 | // [stack] |
| 6154 | return false; |
| 6155 | } |
| 6156 | |
| 6157 | // If the head of this for-loop declared any lexical variables, the parser |
| 6158 | // wrapped this ParseNodeKind::For node in a ParseNodeKind::LexicalScope |
| 6159 | // representing the implicit scope of those variables. By the time we get |
| 6160 | // here, we have already entered that scope. So far, so good. |
| 6161 | if (init) { |
| 6162 | // Emit the `init` clause, whether it's an expression or a variable |
| 6163 | // declaration. (The loop variables were hoisted into an enclosing |
| 6164 | // scope, but we still need to emit code for the initializers.) |
| 6165 | if (init->is<DeclarationListNode>()) { |
| 6166 | MOZ_ASSERT(!init->as<DeclarationListNode>().empty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!init->as<DeclarationListNode>().empty())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!init->as<DeclarationListNode>().empty()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("!init->as<DeclarationListNode>().empty()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6166); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!init->as<DeclarationListNode>().empty()" ")"); do { MOZ_CrashSequence(__null, 6166); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6167 | |
| 6168 | if (!emitTree(init)) { |
| 6169 | // [stack] |
| 6170 | return false; |
| 6171 | } |
| 6172 | } else { |
| 6173 | if (!updateSourceCoordNotes(init->pn_pos.begin)) { |
| 6174 | return false; |
| 6175 | } |
| 6176 | if (!markStepBreakpoint()) { |
| 6177 | return false; |
| 6178 | } |
| 6179 | |
| 6180 | // 'init' is an expression, not a declaration. emitTree left its |
| 6181 | // value on the stack. |
| 6182 | if (!emitTree(init, ValueUsage::IgnoreValue)) { |
| 6183 | // [stack] VAL |
| 6184 | return false; |
| 6185 | } |
| 6186 | if (!emit1(JSOp::Pop)) { |
| 6187 | // [stack] |
| 6188 | return false; |
| 6189 | } |
| 6190 | } |
| 6191 | } |
| 6192 | |
| 6193 | if (!cfor.emitCond(cond ? Some(cond->pn_pos.begin) : Nothing())) { |
| 6194 | // [stack] |
| 6195 | return false; |
| 6196 | } |
| 6197 | |
| 6198 | if (cond) { |
| 6199 | if (!updateSourceCoordNotes(cond->pn_pos.begin)) { |
| 6200 | return false; |
| 6201 | } |
| 6202 | if (!markStepBreakpoint()) { |
| 6203 | return false; |
| 6204 | } |
| 6205 | if (!emitTree(cond)) { |
| 6206 | // [stack] VAL |
| 6207 | return false; |
| 6208 | } |
| 6209 | } |
| 6210 | |
| 6211 | if (!cfor.emitBody(cond ? CForEmitter::Cond::Present |
| 6212 | : CForEmitter::Cond::Missing)) { |
| 6213 | // [stack] |
| 6214 | return false; |
| 6215 | } |
| 6216 | |
| 6217 | if (!emitTree(forBody)) { |
| 6218 | // [stack] |
| 6219 | return false; |
| 6220 | } |
| 6221 | |
| 6222 | if (!cfor.emitUpdate( |
| 6223 | update ? CForEmitter::Update::Present : CForEmitter::Update::Missing, |
| 6224 | update ? Some(update->pn_pos.begin) : Nothing())) { |
| 6225 | // [stack] |
| 6226 | return false; |
| 6227 | } |
| 6228 | |
| 6229 | // Check for update code to do before the condition (if any). |
| 6230 | if (update) { |
| 6231 | if (!updateSourceCoordNotes(update->pn_pos.begin)) { |
| 6232 | return false; |
| 6233 | } |
| 6234 | if (!markStepBreakpoint()) { |
| 6235 | return false; |
| 6236 | } |
| 6237 | if (!emitTree(update, ValueUsage::IgnoreValue)) { |
| 6238 | // [stack] VAL |
| 6239 | return false; |
| 6240 | } |
| 6241 | } |
| 6242 | |
| 6243 | if (!cfor.emitEnd(forNode->pn_pos.begin)) { |
| 6244 | // [stack] |
| 6245 | return false; |
| 6246 | } |
| 6247 | |
| 6248 | return true; |
| 6249 | } |
| 6250 | |
| 6251 | bool BytecodeEmitter::emitFor(ForNode* forNode, |
| 6252 | const EmitterScope* headLexicalEmitterScope) { |
| 6253 | if (forNode->head()->isKind(ParseNodeKind::ForHead)) { |
| 6254 | return emitCStyleFor(forNode, headLexicalEmitterScope); |
| 6255 | } |
| 6256 | |
| 6257 | if (!updateLineNumberNotes(forNode->pn_pos.begin)) { |
| 6258 | return false; |
| 6259 | } |
| 6260 | |
| 6261 | if (forNode->head()->isKind(ParseNodeKind::ForIn)) { |
| 6262 | return emitForIn(forNode, headLexicalEmitterScope); |
| 6263 | } |
| 6264 | |
| 6265 | MOZ_ASSERT(forNode->head()->isKind(ParseNodeKind::ForOf))do { static_assert( mozilla::detail::AssertionConditionType< decltype(forNode->head()->isKind(ParseNodeKind::ForOf)) >::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(forNode->head()->isKind(ParseNodeKind::ForOf)) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("forNode->head()->isKind(ParseNodeKind::ForOf)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6265); AnnotateMozCrashReason("MOZ_ASSERT" "(" "forNode->head()->isKind(ParseNodeKind::ForOf)" ")"); do { MOZ_CrashSequence(__null, 6265); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6266 | return emitForOf(forNode, headLexicalEmitterScope); |
| 6267 | } |
| 6268 | |
| 6269 | MOZ_NEVER_INLINE__attribute__((noinline)) bool BytecodeEmitter::emitFunction( |
| 6270 | FunctionNode* funNode, bool needsProto /* = false */) { |
| 6271 | FunctionBox* funbox = funNode->funbox(); |
| 6272 | |
| 6273 | // [stack] |
| 6274 | |
| 6275 | FunctionEmitter fe(this, funbox, funNode->syntaxKind(), |
| 6276 | funNode->functionIsHoisted() |
| 6277 | ? FunctionEmitter::IsHoisted::Yes |
| 6278 | : FunctionEmitter::IsHoisted::No); |
| 6279 | |
| 6280 | // |wasEmittedByEnclosingScript| flag is set to true once the function has |
| 6281 | // been emitted. Function definitions that need hoisting to the top of the |
| 6282 | // function will be seen by emitFunction in two places. |
| 6283 | if (funbox->wasEmittedByEnclosingScript()) { |
| 6284 | if (!fe.emitAgain()) { |
| 6285 | // [stack] |
| 6286 | return false; |
| 6287 | } |
| 6288 | MOZ_ASSERT(funNode->functionIsHoisted())do { static_assert( mozilla::detail::AssertionConditionType< decltype(funNode->functionIsHoisted())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(funNode->functionIsHoisted ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("funNode->functionIsHoisted()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 6288); AnnotateMozCrashReason("MOZ_ASSERT" "(" "funNode->functionIsHoisted()" ")"); do { MOZ_CrashSequence(__null, 6288); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6289 | } else { |
| 6290 | MOZ_ASSERT(funbox->isInterpreted())do { static_assert( mozilla::detail::AssertionConditionType< decltype(funbox->isInterpreted())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(funbox->isInterpreted())) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("funbox->isInterpreted()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6290); AnnotateMozCrashReason("MOZ_ASSERT" "(" "funbox->isInterpreted()" ")"); do { MOZ_CrashSequence(__null, 6290); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6291 | if (!funbox->emitBytecode) { |
| 6292 | return fe.emitLazy(); |
| 6293 | // [stack] FUN? |
| 6294 | } |
| 6295 | |
| 6296 | if (!fe.prepareForNonLazy()) { |
| 6297 | // [stack] |
| 6298 | return false; |
| 6299 | } |
| 6300 | |
| 6301 | BytecodeEmitter bce2(this, funbox); |
| 6302 | if (!bce2.init(funNode->pn_pos)) { |
| 6303 | return false; |
| 6304 | } |
| 6305 | |
| 6306 | /* We measured the max scope depth when we parsed the function. */ |
| 6307 | if (!bce2.emitFunctionScript(funNode)) { |
| 6308 | return false; |
| 6309 | } |
| 6310 | |
| 6311 | if (!fe.emitNonLazyEnd()) { |
| 6312 | // [stack] FUN? |
| 6313 | return false; |
| 6314 | } |
| 6315 | } |
| 6316 | |
| 6317 | // Track the last emitted top-level self-hosted function, so that intrinsics |
| 6318 | // can adjust attributes at parse time. |
| 6319 | // |
| 6320 | // NOTE: We also disallow lambda functions in the top-level body. This is done |
| 6321 | // to simplify handling of the self-hosted stencil. Within normal function |
| 6322 | // declarations there are no such restrictions. |
| 6323 | if (emitterMode == EmitterMode::SelfHosting) { |
| 6324 | if (sc->isTopLevelContext()) { |
| 6325 | MOZ_ASSERT(!funbox->isLambda())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!funbox->isLambda())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!funbox->isLambda()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!funbox->isLambda()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6325); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!funbox->isLambda()" ")"); do { MOZ_CrashSequence(__null, 6325); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6326 | MOZ_ASSERT(funbox->explicitName())do { static_assert( mozilla::detail::AssertionConditionType< decltype(funbox->explicitName())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(funbox->explicitName()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("funbox->explicitName()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6326); AnnotateMozCrashReason("MOZ_ASSERT" "(" "funbox->explicitName()" ")"); do { MOZ_CrashSequence(__null, 6326); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6327 | prevSelfHostedTopLevelFunction = funbox; |
| 6328 | } |
| 6329 | } |
| 6330 | |
| 6331 | return true; |
| 6332 | } |
| 6333 | |
| 6334 | bool BytecodeEmitter::emitDo(BinaryNode* doNode) { |
| 6335 | ParseNode* bodyNode = doNode->left(); |
| 6336 | |
| 6337 | DoWhileEmitter doWhile(this); |
| 6338 | if (!doWhile.emitBody(doNode->pn_pos.begin, getOffsetForLoop(bodyNode))) { |
| 6339 | return false; |
| 6340 | } |
| 6341 | |
| 6342 | if (!emitTree(bodyNode)) { |
| 6343 | return false; |
| 6344 | } |
| 6345 | |
| 6346 | if (!doWhile.emitCond()) { |
| 6347 | return false; |
| 6348 | } |
| 6349 | |
| 6350 | ParseNode* condNode = doNode->right(); |
| 6351 | if (!updateSourceCoordNotes(condNode->pn_pos.begin)) { |
| 6352 | return false; |
| 6353 | } |
| 6354 | if (!markStepBreakpoint()) { |
| 6355 | return false; |
| 6356 | } |
| 6357 | if (!emitTree(condNode)) { |
| 6358 | return false; |
| 6359 | } |
| 6360 | |
| 6361 | if (!doWhile.emitEnd()) { |
| 6362 | return false; |
| 6363 | } |
| 6364 | |
| 6365 | return true; |
| 6366 | } |
| 6367 | |
| 6368 | bool BytecodeEmitter::emitWhile(BinaryNode* whileNode) { |
| 6369 | ParseNode* bodyNode = whileNode->right(); |
| 6370 | |
| 6371 | WhileEmitter wh(this); |
| 6372 | |
| 6373 | ParseNode* condNode = whileNode->left(); |
| 6374 | if (!wh.emitCond(whileNode->pn_pos.begin, getOffsetForLoop(condNode), |
| 6375 | whileNode->pn_pos.end)) { |
| 6376 | return false; |
| 6377 | } |
| 6378 | |
| 6379 | if (!updateSourceCoordNotes(condNode->pn_pos.begin)) { |
| 6380 | return false; |
| 6381 | } |
| 6382 | if (!markStepBreakpoint()) { |
| 6383 | return false; |
| 6384 | } |
| 6385 | if (!emitTree(condNode)) { |
| 6386 | return false; |
| 6387 | } |
| 6388 | |
| 6389 | if (!wh.emitBody()) { |
| 6390 | return false; |
| 6391 | } |
| 6392 | if (!emitTree(bodyNode)) { |
| 6393 | return false; |
| 6394 | } |
| 6395 | |
| 6396 | if (!wh.emitEnd()) { |
| 6397 | return false; |
| 6398 | } |
| 6399 | |
| 6400 | return true; |
| 6401 | } |
| 6402 | |
| 6403 | bool BytecodeEmitter::emitBreak(TaggedParserAtomIndex label) { |
| 6404 | BreakableControl* target; |
| 6405 | if (label) { |
| 6406 | // Any statement with the matching label may be the break target. |
| 6407 | auto hasSameLabel = [label](LabelControl* labelControl) { |
| 6408 | return labelControl->label() == label; |
| 6409 | }; |
| 6410 | target = findInnermostNestableControl<LabelControl>(hasSameLabel); |
| 6411 | } else { |
| 6412 | auto isNotLabel = [](BreakableControl* control) { |
| 6413 | return !control->is<LabelControl>(); |
| 6414 | }; |
| 6415 | target = findInnermostNestableControl<BreakableControl>(isNotLabel); |
| 6416 | } |
| 6417 | |
| 6418 | return emitGoto(target, GotoKind::Break); |
| 6419 | } |
| 6420 | |
| 6421 | bool BytecodeEmitter::emitContinue(TaggedParserAtomIndex label) { |
| 6422 | LoopControl* target = nullptr; |
| 6423 | if (label) { |
| 6424 | // Find the loop statement enclosed by the matching label. |
| 6425 | NestableControl* control = innermostNestableControl; |
| 6426 | while (!control->is<LabelControl>() || |
| 6427 | control->as<LabelControl>().label() != label) { |
| 6428 | if (control->is<LoopControl>()) { |
| 6429 | target = &control->as<LoopControl>(); |
| 6430 | } |
| 6431 | control = control->enclosing(); |
| 6432 | } |
| 6433 | } else { |
| 6434 | target = findInnermostNestableControl<LoopControl>(); |
| 6435 | } |
| 6436 | return emitGoto(target, GotoKind::Continue); |
| 6437 | } |
| 6438 | |
| 6439 | bool BytecodeEmitter::emitGetFunctionThis(NameNode* thisName) { |
| 6440 | MOZ_ASSERT(sc->hasFunctionThisBinding())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->hasFunctionThisBinding())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->hasFunctionThisBinding ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("sc->hasFunctionThisBinding()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 6440); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->hasFunctionThisBinding()" ")"); do { MOZ_CrashSequence(__null, 6440); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6441 | MOZ_ASSERT(thisName->isName(TaggedParserAtomIndex::WellKnown::dot_this_()))do { static_assert( mozilla::detail::AssertionConditionType< decltype(thisName->isName(TaggedParserAtomIndex::WellKnown ::dot_this_()))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(thisName->isName(TaggedParserAtomIndex ::WellKnown::dot_this_())))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("thisName->isName(TaggedParserAtomIndex::WellKnown::dot_this_())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6441); AnnotateMozCrashReason("MOZ_ASSERT" "(" "thisName->isName(TaggedParserAtomIndex::WellKnown::dot_this_())" ")"); do { MOZ_CrashSequence(__null, 6441); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6442 | |
| 6443 | if (!updateLineNumberNotes(thisName->pn_pos.begin)) { |
| 6444 | return false; |
| 6445 | } |
| 6446 | |
| 6447 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_this_())) { |
| 6448 | // [stack] THIS |
| 6449 | return false; |
| 6450 | } |
| 6451 | if (sc->needsThisTDZChecks()) { |
| 6452 | if (!emit1(JSOp::CheckThis)) { |
| 6453 | // [stack] THIS |
| 6454 | return false; |
| 6455 | } |
| 6456 | } |
| 6457 | |
| 6458 | return true; |
| 6459 | } |
| 6460 | |
| 6461 | bool BytecodeEmitter::emitGetThisForSuperBase(UnaryNode* superBase) { |
| 6462 | MOZ_ASSERT(superBase->isKind(ParseNodeKind::SuperBase))do { static_assert( mozilla::detail::AssertionConditionType< decltype(superBase->isKind(ParseNodeKind::SuperBase))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(superBase->isKind(ParseNodeKind::SuperBase)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("superBase->isKind(ParseNodeKind::SuperBase)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6462); AnnotateMozCrashReason("MOZ_ASSERT" "(" "superBase->isKind(ParseNodeKind::SuperBase)" ")"); do { MOZ_CrashSequence(__null, 6462); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6463 | NameNode* nameNode = &superBase->kid()->as<NameNode>(); |
| 6464 | return emitGetFunctionThis(nameNode); |
| 6465 | // [stack] THIS |
| 6466 | } |
| 6467 | |
| 6468 | bool BytecodeEmitter::emitThisLiteral(ThisLiteral* pn) { |
| 6469 | if (ParseNode* kid = pn->kid()) { |
| 6470 | NameNode* thisName = &kid->as<NameNode>(); |
| 6471 | return emitGetFunctionThis(thisName); |
| 6472 | // [stack] THIS |
| 6473 | } |
| 6474 | |
| 6475 | if (sc->thisBinding() == ThisBinding::Module) { |
| 6476 | return emit1(JSOp::Undefined); |
| 6477 | // [stack] UNDEF |
| 6478 | } |
| 6479 | |
| 6480 | MOZ_ASSERT(sc->thisBinding() == ThisBinding::Global)do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->thisBinding() == ThisBinding::Global)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(sc->thisBinding() == ThisBinding::Global))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->thisBinding() == ThisBinding::Global" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6480); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->thisBinding() == ThisBinding::Global" ")"); do { MOZ_CrashSequence(__null, 6480); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6481 | |
| 6482 | MOZ_ASSERT(outermostScope().hasNonSyntacticScopeOnChain() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(outermostScope().hasNonSyntacticScopeOnChain() == sc ->hasNonSyntacticScope())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(outermostScope().hasNonSyntacticScopeOnChain () == sc->hasNonSyntacticScope()))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("outermostScope().hasNonSyntacticScopeOnChain() == sc->hasNonSyntacticScope()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6483); AnnotateMozCrashReason("MOZ_ASSERT" "(" "outermostScope().hasNonSyntacticScopeOnChain() == sc->hasNonSyntacticScope()" ")"); do { MOZ_CrashSequence(__null, 6483); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6483 | sc->hasNonSyntacticScope())do { static_assert( mozilla::detail::AssertionConditionType< decltype(outermostScope().hasNonSyntacticScopeOnChain() == sc ->hasNonSyntacticScope())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(outermostScope().hasNonSyntacticScopeOnChain () == sc->hasNonSyntacticScope()))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("outermostScope().hasNonSyntacticScopeOnChain() == sc->hasNonSyntacticScope()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6483); AnnotateMozCrashReason("MOZ_ASSERT" "(" "outermostScope().hasNonSyntacticScopeOnChain() == sc->hasNonSyntacticScope()" ")"); do { MOZ_CrashSequence(__null, 6483); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6484 | if (sc->hasNonSyntacticScope()) { |
| 6485 | return emit1(JSOp::NonSyntacticGlobalThis); |
| 6486 | // [stack] THIS |
| 6487 | } |
| 6488 | |
| 6489 | return emit1(JSOp::GlobalThis); |
| 6490 | // [stack] THIS |
| 6491 | } |
| 6492 | |
| 6493 | bool BytecodeEmitter::emitCheckDerivedClassConstructorReturn() { |
| 6494 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(lookupName(TaggedParserAtomIndex::WellKnown::dot_this_ ()).hasKnownSlot())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(lookupName(TaggedParserAtomIndex ::WellKnown::dot_this_()).hasKnownSlot()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("lookupName(TaggedParserAtomIndex::WellKnown::dot_this_()).hasKnownSlot()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6495); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lookupName(TaggedParserAtomIndex::WellKnown::dot_this_()).hasKnownSlot()" ")"); do { MOZ_CrashSequence(__null, 6495); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6495 | lookupName(TaggedParserAtomIndex::WellKnown::dot_this_()).hasKnownSlot())do { static_assert( mozilla::detail::AssertionConditionType< decltype(lookupName(TaggedParserAtomIndex::WellKnown::dot_this_ ()).hasKnownSlot())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(lookupName(TaggedParserAtomIndex ::WellKnown::dot_this_()).hasKnownSlot()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("lookupName(TaggedParserAtomIndex::WellKnown::dot_this_()).hasKnownSlot()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6495); AnnotateMozCrashReason("MOZ_ASSERT" "(" "lookupName(TaggedParserAtomIndex::WellKnown::dot_this_()).hasKnownSlot()" ")"); do { MOZ_CrashSequence(__null, 6495); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6496 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_this_())) { |
| 6497 | return false; |
| 6498 | } |
| 6499 | if (!emit1(JSOp::CheckReturn)) { |
| 6500 | return false; |
| 6501 | } |
| 6502 | if (!emit1(JSOp::SetRval)) { |
| 6503 | return false; |
| 6504 | } |
| 6505 | return true; |
| 6506 | } |
| 6507 | |
| 6508 | bool BytecodeEmitter::emitNewTarget() { |
| 6509 | MOZ_ASSERT(sc->allowNewTarget())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->allowNewTarget())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->allowNewTarget()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("sc->allowNewTarget()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6509); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->allowNewTarget()" ")"); do { MOZ_CrashSequence(__null, 6509); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6510 | |
| 6511 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_newTarget_())) { |
| 6512 | // [stack] NEW.TARGET |
| 6513 | return false; |
| 6514 | } |
| 6515 | return true; |
| 6516 | } |
| 6517 | |
| 6518 | bool BytecodeEmitter::emitNewTarget(NewTargetNode* pn) { |
| 6519 | MOZ_ASSERT(pn->newTargetName()->isName(do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->newTargetName()->isName( TaggedParserAtomIndex ::WellKnown::dot_newTarget_()))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->newTargetName()->isName ( TaggedParserAtomIndex::WellKnown::dot_newTarget_())))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("pn->newTargetName()->isName( TaggedParserAtomIndex::WellKnown::dot_newTarget_())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6520); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->newTargetName()->isName( TaggedParserAtomIndex::WellKnown::dot_newTarget_())" ")"); do { MOZ_CrashSequence(__null, 6520); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6520 | TaggedParserAtomIndex::WellKnown::dot_newTarget_()))do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->newTargetName()->isName( TaggedParserAtomIndex ::WellKnown::dot_newTarget_()))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->newTargetName()->isName ( TaggedParserAtomIndex::WellKnown::dot_newTarget_())))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("pn->newTargetName()->isName( TaggedParserAtomIndex::WellKnown::dot_newTarget_())" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6520); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->newTargetName()->isName( TaggedParserAtomIndex::WellKnown::dot_newTarget_())" ")"); do { MOZ_CrashSequence(__null, 6520); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6521 | |
| 6522 | return emitNewTarget(); |
| 6523 | } |
| 6524 | |
| 6525 | bool BytecodeEmitter::emitNewTarget(CallNode* pn) { |
| 6526 | MOZ_ASSERT(pn->callOp() == JSOp::SuperCall ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->callOp() == JSOp::SuperCall || pn->callOp( ) == JSOp::SpreadSuperCall)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->callOp() == JSOp::SuperCall || pn->callOp() == JSOp::SpreadSuperCall))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->callOp() == JSOp::SuperCall || pn->callOp() == JSOp::SpreadSuperCall" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6527); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->callOp() == JSOp::SuperCall || pn->callOp() == JSOp::SpreadSuperCall" ")"); do { MOZ_CrashSequence(__null, 6527); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6527 | pn->callOp() == JSOp::SpreadSuperCall)do { static_assert( mozilla::detail::AssertionConditionType< decltype(pn->callOp() == JSOp::SuperCall || pn->callOp( ) == JSOp::SpreadSuperCall)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pn->callOp() == JSOp::SuperCall || pn->callOp() == JSOp::SpreadSuperCall))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("pn->callOp() == JSOp::SuperCall || pn->callOp() == JSOp::SpreadSuperCall" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6527); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pn->callOp() == JSOp::SuperCall || pn->callOp() == JSOp::SpreadSuperCall" ")"); do { MOZ_CrashSequence(__null, 6527); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6528 | |
| 6529 | // The parser is responsible for marking the "new.target" binding as being |
| 6530 | // implicitly used in super() calls. |
| 6531 | return emitNewTarget(); |
| 6532 | } |
| 6533 | |
| 6534 | bool BytecodeEmitter::emitReturn(UnaryNode* returnNode) { |
| 6535 | if (!updateSourceCoordNotes(returnNode->pn_pos.begin)) { |
| 6536 | return false; |
| 6537 | } |
| 6538 | |
| 6539 | if (!markStepBreakpoint()) { |
| 6540 | return false; |
| 6541 | } |
| 6542 | |
| 6543 | /* Push a return value */ |
| 6544 | if (ParseNode* expr = returnNode->kid()) { |
| 6545 | if (!emitTree(expr)) { |
| 6546 | return false; |
| 6547 | } |
| 6548 | |
| 6549 | if (sc->asSuspendableContext()->isAsync() && |
| 6550 | sc->asSuspendableContext()->isGenerator()) { |
| 6551 | if (!emitAwaitInInnermostScope()) { |
| 6552 | return false; |
| 6553 | } |
| 6554 | } |
| 6555 | } else { |
| 6556 | /* No explicit return value provided */ |
| 6557 | if (!emit1(JSOp::Undefined)) { |
| 6558 | return false; |
| 6559 | } |
| 6560 | } |
| 6561 | |
| 6562 | // We know functionBodyEndPos is set because "return" is only |
| 6563 | // valid in a function, and so we've passed through |
| 6564 | // emitFunctionScript. |
| 6565 | if (!updateSourceCoordNotes(*functionBodyEndPos)) { |
| 6566 | return false; |
| 6567 | } |
| 6568 | |
| 6569 | /* |
| 6570 | * The return value is currently on the stack. We would like to |
| 6571 | * generate JSOp::Return, but if we have work to do before returning, |
| 6572 | * we will instead generate JSOp::SetRval / JSOp::RetRval. |
| 6573 | * |
| 6574 | * We don't know whether we will need fixup code until after calling |
| 6575 | * prepareForNonLocalJumpToOutermost, so we start by generating |
| 6576 | * JSOp::SetRval, then mutate it to JSOp::Return in finishReturn if it |
| 6577 | * wasn't needed. |
| 6578 | */ |
| 6579 | BytecodeOffset setRvalOffset = bytecodeSection().offset(); |
| 6580 | if (!emit1(JSOp::SetRval)) { |
| 6581 | return false; |
| 6582 | } |
| 6583 | |
| 6584 | NonLocalExitControl nle(this, NonLocalExitKind::Return); |
| 6585 | return nle.emitReturn(setRvalOffset); |
| 6586 | } |
| 6587 | |
| 6588 | bool BytecodeEmitter::finishReturn(BytecodeOffset setRvalOffset) { |
| 6589 | // The return value is currently in rval. Depending on the current function, |
| 6590 | // we may have to do additional work before returning: |
| 6591 | // - Derived class constructors must check if the return value is an object. |
| 6592 | // - Generators and async functions must do a final yield. |
| 6593 | // - Non-async generators must return the value as an iterator result: |
| 6594 | // { value: <rval>, done: true } |
| 6595 | // - Non-generator async functions must resolve the function's result promise |
| 6596 | // with the value. |
| 6597 | // |
| 6598 | // If we have not generated any code since the SetRval that stored the return |
| 6599 | // value, we can also optimize the bytecode by rewriting that SetRval as a |
| 6600 | // JSOp::Return. See |emitReturn| above. |
| 6601 | |
| 6602 | bool isDerivedClassConstructor = |
| 6603 | sc->isFunctionBox() && sc->asFunctionBox()->isDerivedClassConstructor(); |
| 6604 | bool needsFinalYield = |
| 6605 | sc->isFunctionBox() && sc->asFunctionBox()->needsFinalYield(); |
| 6606 | bool isSimpleReturn = |
| 6607 | setRvalOffset.valid() && |
| 6608 | setRvalOffset + BytecodeOffsetDiff(JSOpLength_SetRval) == |
| 6609 | bytecodeSection().offset(); |
| 6610 | |
| 6611 | if (isDerivedClassConstructor) { |
| 6612 | MOZ_ASSERT(!needsFinalYield)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!needsFinalYield)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!needsFinalYield))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!needsFinalYield" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6612); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!needsFinalYield" ")" ); do { MOZ_CrashSequence(__null, 6612); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6613 | if (!emitJump(JSOp::Goto, &endOfDerivedClassConstructorBody)) { |
| 6614 | return false; |
| 6615 | } |
| 6616 | return true; |
| 6617 | } |
| 6618 | |
| 6619 | if (needsFinalYield) { |
| 6620 | // A forced return from a `yield` expression can have extra values on the |
| 6621 | // expression stack. Pop them here. |
| 6622 | int32_t nvalues = bytecodeSection().stackDepth(); |
| 6623 | if (nvalues > 0 && !emitPopN(nvalues)) { |
| 6624 | return false; |
| 6625 | } |
| 6626 | if (!emitJump(JSOp::Goto, &finalYields)) { |
| 6627 | return false; |
| 6628 | } |
| 6629 | return true; |
| 6630 | } |
| 6631 | |
| 6632 | if (isSimpleReturn) { |
| 6633 | MOZ_ASSERT(JSOp(bytecodeSection().code()[setRvalOffset.value()]) ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(JSOp(bytecodeSection().code()[setRvalOffset.value()] ) == JSOp::SetRval)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JSOp(bytecodeSection().code( )[setRvalOffset.value()]) == JSOp::SetRval))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("JSOp(bytecodeSection().code()[setRvalOffset.value()]) == JSOp::SetRval" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6634); AnnotateMozCrashReason("MOZ_ASSERT" "(" "JSOp(bytecodeSection().code()[setRvalOffset.value()]) == JSOp::SetRval" ")"); do { MOZ_CrashSequence(__null, 6634); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 6634 | JSOp::SetRval)do { static_assert( mozilla::detail::AssertionConditionType< decltype(JSOp(bytecodeSection().code()[setRvalOffset.value()] ) == JSOp::SetRval)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(JSOp(bytecodeSection().code( )[setRvalOffset.value()]) == JSOp::SetRval))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("JSOp(bytecodeSection().code()[setRvalOffset.value()]) == JSOp::SetRval" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6634); AnnotateMozCrashReason("MOZ_ASSERT" "(" "JSOp(bytecodeSection().code()[setRvalOffset.value()]) == JSOp::SetRval" ")"); do { MOZ_CrashSequence(__null, 6634); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6635 | bytecodeSection().code()[setRvalOffset.value()] = jsbytecode(JSOp::Return); |
| 6636 | return true; |
| 6637 | } |
| 6638 | |
| 6639 | // Nothing special needs to be done. |
| 6640 | return emitReturnRval(); |
| 6641 | } |
| 6642 | |
| 6643 | bool BytecodeEmitter::emitCheckYieldResumeKind() { |
| 6644 | // The bytecode below relies on Next being falsy and Throw/Return being |
| 6645 | // truthy. |
| 6646 | static_assert(uint8_t(GeneratorResumeKind::Next) == 0); |
| 6647 | static_assert(uint8_t(GeneratorResumeKind::Throw) != 0); |
| 6648 | static_assert(uint8_t(GeneratorResumeKind::Return) != 0); |
| 6649 | |
| 6650 | const int32_t startDepth = bytecodeSection().stackDepth(); |
| 6651 | // [stack] RVAL RESUMEKIND |
| 6652 | |
| 6653 | if (!emit1(JSOp::Dup)) { |
| 6654 | // [stack] RVAL RESUMEKIND RESUMEKIND |
| 6655 | return false; |
| 6656 | } |
| 6657 | InternalIfEmitter ifNotNext(this); |
| 6658 | if (!ifNotNext.emitThen()) { |
| 6659 | // [stack] RVAL RESUMEKIND |
| 6660 | return false; |
| 6661 | } |
| 6662 | |
| 6663 | // Handle Throw and Return. |
| 6664 | if (!emitPushResumeKind(GeneratorResumeKind::Throw)) { |
| 6665 | // [stack] RVAL RESUMEKIND THROW |
| 6666 | return false; |
| 6667 | } |
| 6668 | if (!emit1(JSOp::StrictEq)) { |
| 6669 | // [stack] RVAL (RESUMEKIND==Throw) |
| 6670 | return false; |
| 6671 | } |
| 6672 | InternalIfEmitter ifThrow(this); |
| 6673 | if (!ifThrow.emitThen()) { |
| 6674 | // [stack] RVAL |
| 6675 | return false; |
| 6676 | } |
| 6677 | if (!emit1(JSOp::Throw)) { |
| 6678 | // [stack] |
| 6679 | return false; |
| 6680 | } |
| 6681 | bytecodeSection().setStackDepth(startDepth - 1); |
| 6682 | if (!ifThrow.emitEnd()) { |
| 6683 | // [stack] RVAL |
| 6684 | return false; |
| 6685 | } |
| 6686 | if (!emit1(JSOp::SetRval)) { |
| 6687 | // [stack] |
| 6688 | return false; |
| 6689 | } |
| 6690 | { |
| 6691 | NonLocalExitControl nle(this, NonLocalExitKind::Return); |
| 6692 | if (!nle.emitReturn()) { |
| 6693 | return false; |
| 6694 | } |
| 6695 | } |
| 6696 | |
| 6697 | bytecodeSection().setStackDepth(startDepth); |
| 6698 | if (!ifNotNext.emitEnd()) { |
| 6699 | // [stack] RVAL RESUMEKIND |
| 6700 | return false; |
| 6701 | } |
| 6702 | if (!emit1(JSOp::Pop)) { |
| 6703 | // [stack] RVAL |
| 6704 | return false; |
| 6705 | } |
| 6706 | return true; |
| 6707 | } |
| 6708 | |
| 6709 | bool BytecodeEmitter::emitCheckAwaitResumeKind() { |
| 6710 | // An `await` is only resumed by a promise reaction, so we don't have to |
| 6711 | // handle the Return resume kind here, only Next and Throw. |
| 6712 | // See https://tc39.es/ecma262/#await. |
| 6713 | |
| 6714 | // The bytecode below relies on Next being falsy and Throw being truthy. |
| 6715 | static_assert(uint8_t(GeneratorResumeKind::Next) == 0); |
| 6716 | static_assert(uint8_t(GeneratorResumeKind::Throw) != 0); |
| 6717 | |
| 6718 | const int32_t startDepth = bytecodeSection().stackDepth(); |
| 6719 | // [stack] RVAL RESUMEKIND |
| 6720 | |
| 6721 | InternalIfEmitter ifThrow(this); |
| 6722 | if (!ifThrow.emitThen()) { |
| 6723 | // [stack] RVAL |
| 6724 | return false; |
| 6725 | } |
| 6726 | if (!emit1(JSOp::Throw)) { |
| 6727 | // [stack] |
| 6728 | return false; |
| 6729 | } |
| 6730 | bytecodeSection().setStackDepth(startDepth - 1); |
| 6731 | if (!ifThrow.emitEnd()) { |
| 6732 | // [stack] RVAL |
| 6733 | return false; |
| 6734 | } |
| 6735 | return true; |
| 6736 | } |
| 6737 | |
| 6738 | bool BytecodeEmitter::emitGetDotGeneratorInScope(EmitterScope& currentScope) { |
| 6739 | if (!sc->isFunction() && sc->isModuleContext() && |
| 6740 | sc->asModuleContext()->isAsync()) { |
| 6741 | NameLocation loc = *locationOfNameBoundInScopeType<ModuleScope>( |
| 6742 | TaggedParserAtomIndex::WellKnown::dot_generator_(), ¤tScope); |
| 6743 | return emitGetNameAtLocation( |
| 6744 | TaggedParserAtomIndex::WellKnown::dot_generator_(), loc); |
| 6745 | } |
| 6746 | NameLocation loc = *locationOfNameBoundInScopeType<FunctionScope>( |
| 6747 | TaggedParserAtomIndex::WellKnown::dot_generator_(), ¤tScope); |
| 6748 | return emitGetNameAtLocation( |
| 6749 | TaggedParserAtomIndex::WellKnown::dot_generator_(), loc); |
| 6750 | } |
| 6751 | |
| 6752 | bool BytecodeEmitter::emitInitialYield(UnaryNode* yieldNode) { |
| 6753 | if (!emitTree(yieldNode->kid())) { |
| 6754 | return false; |
| 6755 | } |
| 6756 | |
| 6757 | if (!emitYieldOp(JSOp::InitialYield)) { |
| 6758 | // [stack] RVAL RESUMEKIND |
| 6759 | return false; |
| 6760 | } |
| 6761 | if (!emitCheckYieldResumeKind()) { |
| 6762 | // [stack] RVAL |
| 6763 | return false; |
| 6764 | } |
| 6765 | if (!emit1(JSOp::Pop)) { |
| 6766 | // [stack] |
| 6767 | return false; |
| 6768 | } |
| 6769 | |
| 6770 | return true; |
| 6771 | } |
| 6772 | |
| 6773 | bool BytecodeEmitter::emitYield(UnaryNode* yieldNode) { |
| 6774 | MOZ_ASSERT(sc->isFunctionBox())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isFunctionBox())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isFunctionBox()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("sc->isFunctionBox()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6774); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isFunctionBox()" ")"); do { MOZ_CrashSequence(__null, 6774); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6775 | MOZ_ASSERT(sc->asFunctionBox()->isGenerator())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->asFunctionBox()->isGenerator())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(sc->asFunctionBox()->isGenerator()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->asFunctionBox()->isGenerator()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6775); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->asFunctionBox()->isGenerator()" ")"); do { MOZ_CrashSequence(__null, 6775); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6776 | MOZ_ASSERT(yieldNode->isKind(ParseNodeKind::YieldExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(yieldNode->isKind(ParseNodeKind::YieldExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(yieldNode->isKind(ParseNodeKind::YieldExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("yieldNode->isKind(ParseNodeKind::YieldExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6776); AnnotateMozCrashReason("MOZ_ASSERT" "(" "yieldNode->isKind(ParseNodeKind::YieldExpr)" ")"); do { MOZ_CrashSequence(__null, 6776); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6777 | |
| 6778 | bool needsIteratorResult = sc->asFunctionBox()->needsIteratorResult(); |
| 6779 | if (needsIteratorResult) { |
| 6780 | if (!emitPrepareIteratorResult()) { |
| 6781 | // [stack] ITEROBJ |
| 6782 | return false; |
| 6783 | } |
| 6784 | } |
| 6785 | if (ParseNode* expr = yieldNode->kid()) { |
| 6786 | if (!emitTree(expr)) { |
| 6787 | // [stack] ITEROBJ? VAL |
| 6788 | return false; |
| 6789 | } |
| 6790 | } else { |
| 6791 | if (!emit1(JSOp::Undefined)) { |
| 6792 | // [stack] ITEROBJ? UNDEFINED |
| 6793 | return false; |
| 6794 | } |
| 6795 | } |
| 6796 | |
| 6797 | if (sc->asSuspendableContext()->isAsync()) { |
| 6798 | MOZ_ASSERT(!needsIteratorResult)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!needsIteratorResult)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!needsIteratorResult))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!needsIteratorResult" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6798); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!needsIteratorResult" ")"); do { MOZ_CrashSequence(__null, 6798); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6799 | if (!emitAwaitInInnermostScope()) { |
| 6800 | // [stack] RESULT |
| 6801 | return false; |
| 6802 | } |
| 6803 | } |
| 6804 | |
| 6805 | if (needsIteratorResult) { |
| 6806 | if (!emitFinishIteratorResult(false)) { |
| 6807 | // [stack] ITEROBJ |
| 6808 | return false; |
| 6809 | } |
| 6810 | } |
| 6811 | |
| 6812 | if (!emitGetDotGeneratorInInnermostScope()) { |
| 6813 | // [stack] # if needsIteratorResult |
| 6814 | // [stack] ITEROBJ .GENERATOR |
| 6815 | // [stack] # else |
| 6816 | // [stack] RESULT .GENERATOR |
| 6817 | return false; |
| 6818 | } |
| 6819 | |
| 6820 | if (!emitYieldOp(JSOp::Yield)) { |
| 6821 | // [stack] YIELDRESULT RESUMEKIND |
| 6822 | return false; |
| 6823 | } |
| 6824 | |
| 6825 | if (!emitCheckYieldResumeKind()) { |
| 6826 | // [stack] YIELDRESULT |
| 6827 | return false; |
| 6828 | } |
| 6829 | |
| 6830 | return true; |
| 6831 | } |
| 6832 | |
| 6833 | bool BytecodeEmitter::emitAwaitInInnermostScope(UnaryNode* awaitNode) { |
| 6834 | MOZ_ASSERT(sc->isSuspendableContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isSuspendableContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isSuspendableContext( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("sc->isSuspendableContext()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 6834); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isSuspendableContext()" ")"); do { MOZ_CrashSequence(__null, 6834); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6835 | MOZ_ASSERT(awaitNode->isKind(ParseNodeKind::AwaitExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(awaitNode->isKind(ParseNodeKind::AwaitExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(awaitNode->isKind(ParseNodeKind::AwaitExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("awaitNode->isKind(ParseNodeKind::AwaitExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6835); AnnotateMozCrashReason("MOZ_ASSERT" "(" "awaitNode->isKind(ParseNodeKind::AwaitExpr)" ")"); do { MOZ_CrashSequence(__null, 6835); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6836 | |
| 6837 | if (!emitTree(awaitNode->kid())) { |
| 6838 | return false; |
| 6839 | } |
| 6840 | return emitAwaitInInnermostScope(); |
| 6841 | } |
| 6842 | |
| 6843 | bool BytecodeEmitter::emitAwaitInScope(EmitterScope& currentScope) { |
| 6844 | // Emit the CanSkipAwait fast path if this is a function script. The await |
| 6845 | // can't be skipped for modules: during InnerModuleEvaluation, we must yield |
| 6846 | // execution so other modules in the same module graph can run. |
| 6847 | mozilla::Maybe<InternalIfEmitter> ifCanSkip; |
| 6848 | if (sc->isFunctionBox()) { |
| 6849 | if (!emit1(JSOp::CanSkipAwait)) { |
| 6850 | // [stack] VALUE CANSKIP |
| 6851 | return false; |
| 6852 | } |
| 6853 | |
| 6854 | if (!emit1(JSOp::MaybeExtractAwaitValue)) { |
| 6855 | // [stack] VALUE_OR_RESOLVED CANSKIP |
| 6856 | return false; |
| 6857 | } |
| 6858 | |
| 6859 | ifCanSkip.emplace(this); |
| 6860 | if (!ifCanSkip->emitThen(IfEmitter::ConditionKind::Negative)) { |
| 6861 | // [stack] VALUE_OR_RESOLVED |
| 6862 | return false; |
| 6863 | } |
| 6864 | } |
| 6865 | |
| 6866 | if (sc->asSuspendableContext()->needsPromiseResult()) { |
| 6867 | if (!emitGetDotGeneratorInScope(currentScope)) { |
| 6868 | // [stack] VALUE GENERATOR |
| 6869 | return false; |
| 6870 | } |
| 6871 | if (!emit1(JSOp::AsyncAwait)) { |
| 6872 | // [stack] PROMISE |
| 6873 | return false; |
| 6874 | } |
| 6875 | } |
| 6876 | |
| 6877 | if (!emitGetDotGeneratorInScope(currentScope)) { |
| 6878 | // [stack] VALUE|PROMISE GENERATOR |
| 6879 | return false; |
| 6880 | } |
| 6881 | if (!emitYieldOp(JSOp::Await)) { |
| 6882 | // [stack] RESOLVED RESUMEKIND |
| 6883 | return false; |
| 6884 | } |
| 6885 | if (!emitCheckAwaitResumeKind()) { |
| 6886 | // [stack] RESOLVED |
| 6887 | return false; |
| 6888 | } |
| 6889 | |
| 6890 | if (ifCanSkip.isSome()) { |
| 6891 | if (!ifCanSkip->emitEnd()) { |
| 6892 | return false; |
| 6893 | } |
| 6894 | MOZ_ASSERT(ifCanSkip->popped() == 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(ifCanSkip->popped() == 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(ifCanSkip->popped() == 0) )), 0))) { do { } while (false); MOZ_ReportAssertionFailure("ifCanSkip->popped() == 0" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6894); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ifCanSkip->popped() == 0" ")"); do { MOZ_CrashSequence(__null, 6894); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6895 | } |
| 6896 | |
| 6897 | return true; |
| 6898 | } |
| 6899 | |
| 6900 | // ES2019 draft rev 49b781ec80117b60f73327ef3054703a3111e40c |
| 6901 | // 14.4.14 Runtime Semantics: Evaluation |
| 6902 | // YieldExpression : yield* AssignmentExpression |
| 6903 | bool BytecodeEmitter::emitYieldStar(ParseNode* iter) { |
| 6904 | MOZ_ASSERT(getSelfHostedIterFor(iter) == SelfHostedIter::Deny,do { static_assert( mozilla::detail::AssertionConditionType< decltype(getSelfHostedIterFor(iter) == SelfHostedIter::Deny)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(getSelfHostedIterFor(iter) == SelfHostedIter::Deny)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("getSelfHostedIterFor(iter) == SelfHostedIter::Deny" " (" "yield* is prohibited in self-hosted code because it can run " "user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 6906); AnnotateMozCrashReason("MOZ_ASSERT" "(" "getSelfHostedIterFor(iter) == SelfHostedIter::Deny" ") (" "yield* is prohibited in self-hosted code because it can run " "user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 6906); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 6905 | "yield* is prohibited in self-hosted code because it can run "do { static_assert( mozilla::detail::AssertionConditionType< decltype(getSelfHostedIterFor(iter) == SelfHostedIter::Deny)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(getSelfHostedIterFor(iter) == SelfHostedIter::Deny)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("getSelfHostedIterFor(iter) == SelfHostedIter::Deny" " (" "yield* is prohibited in self-hosted code because it can run " "user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 6906); AnnotateMozCrashReason("MOZ_ASSERT" "(" "getSelfHostedIterFor(iter) == SelfHostedIter::Deny" ") (" "yield* is prohibited in self-hosted code because it can run " "user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 6906); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 6906 | "user-modifiable iteration code")do { static_assert( mozilla::detail::AssertionConditionType< decltype(getSelfHostedIterFor(iter) == SelfHostedIter::Deny)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(getSelfHostedIterFor(iter) == SelfHostedIter::Deny)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("getSelfHostedIterFor(iter) == SelfHostedIter::Deny" " (" "yield* is prohibited in self-hosted code because it can run " "user-modifiable iteration code" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 6906); AnnotateMozCrashReason("MOZ_ASSERT" "(" "getSelfHostedIterFor(iter) == SelfHostedIter::Deny" ") (" "yield* is prohibited in self-hosted code because it can run " "user-modifiable iteration code" ")"); do { MOZ_CrashSequence (__null, 6906); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 6907 | |
| 6908 | MOZ_ASSERT(sc->isSuspendableContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isSuspendableContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isSuspendableContext( )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("sc->isSuspendableContext()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 6908); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isSuspendableContext()" ")"); do { MOZ_CrashSequence(__null, 6908); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6909 | MOZ_ASSERT(sc->asSuspendableContext()->isGenerator())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->asSuspendableContext()->isGenerator())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(sc->asSuspendableContext()->isGenerator()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("sc->asSuspendableContext()->isGenerator()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6909); AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->asSuspendableContext()->isGenerator()" ")"); do { MOZ_CrashSequence(__null, 6909); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6910 | |
| 6911 | // Step 1. |
| 6912 | IteratorKind iterKind = sc->asSuspendableContext()->isAsync() |
| 6913 | ? IteratorKind::Async |
| 6914 | : IteratorKind::Sync; |
| 6915 | // Steps 2-5. |
| 6916 | if (!emitTree(iter)) { |
| 6917 | // [stack] ITERABLE |
| 6918 | return false; |
| 6919 | } |
| 6920 | if (iterKind == IteratorKind::Async) { |
| 6921 | if (!emitAsyncIterator(SelfHostedIter::Deny)) { |
| 6922 | // [stack] NEXT ITER |
| 6923 | return false; |
| 6924 | } |
| 6925 | } else { |
| 6926 | if (!emitIterator(SelfHostedIter::Deny)) { |
| 6927 | // [stack] NEXT ITER |
| 6928 | return false; |
| 6929 | } |
| 6930 | } |
| 6931 | |
| 6932 | // Step 6. |
| 6933 | // Start with NormalCompletion(undefined). |
| 6934 | if (!emit1(JSOp::Undefined)) { |
| 6935 | // [stack] NEXT ITER RECEIVED |
| 6936 | return false; |
| 6937 | } |
| 6938 | if (!emitPushResumeKind(GeneratorResumeKind::Next)) { |
| 6939 | // [stack] NEXT ITER RECEIVED RESUMEKIND |
| 6940 | return false; |
| 6941 | } |
| 6942 | |
| 6943 | const int32_t startDepth = bytecodeSection().stackDepth(); |
| 6944 | MOZ_ASSERT(startDepth >= 4)do { static_assert( mozilla::detail::AssertionConditionType< decltype(startDepth >= 4)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(startDepth >= 4))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("startDepth >= 4" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 6944); AnnotateMozCrashReason("MOZ_ASSERT" "(" "startDepth >= 4" ")"); do { MOZ_CrashSequence(__null, 6944); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 6945 | |
| 6946 | // Step 7 is a loop. |
| 6947 | LoopControl loopInfo(this, StatementKind::YieldStar); |
| 6948 | if (!loopInfo.emitLoopHead(this, Nothing())) { |
| 6949 | // [stack] NEXT ITER RECEIVED RESUMEKIND |
| 6950 | return false; |
| 6951 | } |
| 6952 | |
| 6953 | // Step 7.a. Check for Normal completion. |
| 6954 | if (!emit1(JSOp::Dup)) { |
| 6955 | // [stack] NEXT ITER RECEIVED RESUMEKIND RESUMEKIND |
| 6956 | return false; |
| 6957 | } |
| 6958 | if (!emitPushResumeKind(GeneratorResumeKind::Next)) { |
| 6959 | // [stack] NEXT ITER RECEIVED RESUMEKIND RESUMEKIND NORMAL |
| 6960 | return false; |
| 6961 | } |
| 6962 | if (!emit1(JSOp::StrictEq)) { |
| 6963 | // [stack] NEXT ITER RECEIVED RESUMEKIND IS_NORMAL |
| 6964 | return false; |
| 6965 | } |
| 6966 | |
| 6967 | InternalIfEmitter ifKind(this); |
| 6968 | if (!ifKind.emitThenElse()) { |
| 6969 | // [stack] NEXT ITER RECEIVED RESUMEKIND |
| 6970 | return false; |
| 6971 | } |
| 6972 | { |
| 6973 | if (!emit1(JSOp::Pop)) { |
| 6974 | // [stack] NEXT ITER RECEIVED |
| 6975 | return false; |
| 6976 | } |
| 6977 | |
| 6978 | // Step 7.a.i. |
| 6979 | // result = iter.next(received) |
| 6980 | if (!emit2(JSOp::Unpick, 2)) { |
| 6981 | // [stack] RECEIVED NEXT ITER |
| 6982 | return false; |
| 6983 | } |
| 6984 | if (!emit1(JSOp::Dup2)) { |
| 6985 | // [stack] RECEIVED NEXT ITER NEXT ITER |
| 6986 | return false; |
| 6987 | } |
| 6988 | if (!emit2(JSOp::Pick, 4)) { |
| 6989 | // [stack] NEXT ITER NEXT ITER RECEIVED |
| 6990 | return false; |
| 6991 | } |
| 6992 | if (!emitCall(JSOp::Call, 1, iter)) { |
| 6993 | // [stack] NEXT ITER RESULT |
| 6994 | return false; |
| 6995 | } |
| 6996 | |
| 6997 | // Step 7.a.ii. |
| 6998 | if (iterKind == IteratorKind::Async) { |
| 6999 | if (!emitAwaitInInnermostScope()) { |
| 7000 | // [stack] NEXT ITER RESULT |
| 7001 | return false; |
| 7002 | } |
| 7003 | } |
| 7004 | |
| 7005 | // Step 7.a.iii. |
| 7006 | if (!emitCheckIsObj(CheckIsObjectKind::IteratorNext)) { |
| 7007 | // [stack] NEXT ITER RESULT |
| 7008 | return false; |
| 7009 | } |
| 7010 | |
| 7011 | // Bytecode for steps 7.a.iv-vii is emitted after the ifKind if-else because |
| 7012 | // it's shared with other branches. |
| 7013 | } |
| 7014 | |
| 7015 | // Step 7.b. Check for Throw completion. |
| 7016 | if (!ifKind.emitElseIf(Nothing())) { |
| 7017 | // [stack] NEXT ITER RECEIVED RESUMEKIND |
| 7018 | return false; |
| 7019 | } |
| 7020 | if (!emit1(JSOp::Dup)) { |
| 7021 | // [stack] NEXT ITER RECEIVED RESUMEKIND RESUMEKIND |
| 7022 | return false; |
| 7023 | } |
| 7024 | if (!emitPushResumeKind(GeneratorResumeKind::Throw)) { |
| 7025 | // [stack] NEXT ITER RECEIVED RESUMEKIND RESUMEKIND THROW |
| 7026 | return false; |
| 7027 | } |
| 7028 | if (!emit1(JSOp::StrictEq)) { |
| 7029 | // [stack] NEXT ITER RECEIVED RESUMEKIND IS_THROW |
| 7030 | return false; |
| 7031 | } |
| 7032 | if (!ifKind.emitThenElse()) { |
| 7033 | // [stack] NEXT ITER RECEIVED RESUMEKIND |
| 7034 | return false; |
| 7035 | } |
| 7036 | { |
| 7037 | if (!emit1(JSOp::Pop)) { |
| 7038 | // [stack] NEXT ITER RECEIVED |
| 7039 | return false; |
| 7040 | } |
| 7041 | // Step 7.b.i. |
| 7042 | if (!emitDupAt(1)) { |
| 7043 | // [stack] NEXT ITER RECEIVED ITER |
| 7044 | return false; |
| 7045 | } |
| 7046 | if (!emit1(JSOp::Dup)) { |
| 7047 | // [stack] NEXT ITER RECEIVED ITER ITER |
| 7048 | return false; |
| 7049 | } |
| 7050 | if (!emitAtomOp(JSOp::GetProp, |
| 7051 | TaggedParserAtomIndex::WellKnown::throw_())) { |
| 7052 | // [stack] NEXT ITER RECEIVED ITER THROW |
| 7053 | return false; |
| 7054 | } |
| 7055 | |
| 7056 | // Step 7.b.ii. |
| 7057 | InternalIfEmitter ifThrowMethodIsNotDefined(this); |
| 7058 | if (!emit1(JSOp::IsNullOrUndefined)) { |
| 7059 | // [stack] NEXT ITER RECEIVED ITER THROW NULL-OR-UNDEF |
| 7060 | return false; |
| 7061 | } |
| 7062 | |
| 7063 | if (!ifThrowMethodIsNotDefined.emitThenElse( |
| 7064 | IfEmitter::ConditionKind::Negative)) { |
| 7065 | // [stack] NEXT ITER RECEIVED ITER THROW |
| 7066 | return false; |
| 7067 | } |
| 7068 | |
| 7069 | // Step 7.b.ii.1. |
| 7070 | // RESULT = ITER.throw(EXCEPTION) |
| 7071 | if (!emit1(JSOp::Swap)) { |
| 7072 | // [stack] NEXT ITER RECEIVED THROW ITER |
| 7073 | return false; |
| 7074 | } |
| 7075 | if (!emit2(JSOp::Pick, 2)) { |
| 7076 | // [stack] NEXT ITER THROW ITER RECEIVED |
| 7077 | return false; |
| 7078 | } |
| 7079 | if (!emitCall(JSOp::Call, 1, iter)) { |
| 7080 | // [stack] NEXT ITER RESULT |
| 7081 | return false; |
| 7082 | } |
| 7083 | |
| 7084 | // Step 7.b.ii.2. |
| 7085 | if (iterKind == IteratorKind::Async) { |
| 7086 | if (!emitAwaitInInnermostScope()) { |
| 7087 | // [stack] NEXT ITER RESULT |
| 7088 | return false; |
| 7089 | } |
| 7090 | } |
| 7091 | |
| 7092 | // Step 7.b.ii.4. |
| 7093 | if (!emitCheckIsObj(CheckIsObjectKind::IteratorThrow)) { |
| 7094 | // [stack] NEXT ITER RESULT |
| 7095 | return false; |
| 7096 | } |
| 7097 | |
| 7098 | // Bytecode for steps 7.b.ii.5-8 is emitted after the ifKind if-else because |
| 7099 | // it's shared with other branches. |
| 7100 | |
| 7101 | // Step 7.b.iii. |
| 7102 | if (!ifThrowMethodIsNotDefined.emitElse()) { |
| 7103 | // [stack] NEXT ITER RECEIVED ITER THROW |
| 7104 | return false; |
| 7105 | } |
| 7106 | if (!emit1(JSOp::Pop)) { |
| 7107 | // [stack] NEXT ITER RECEIVED ITER |
| 7108 | return false; |
| 7109 | } |
| 7110 | |
| 7111 | // Steps 7.b.iii.1-4. |
| 7112 | // |
| 7113 | // If the iterator does not have a "throw" method, it calls IteratorClose |
| 7114 | // and then throws a TypeError. |
| 7115 | if (!emitIteratorCloseInInnermostScope(iterKind, CompletionKind::Normal, |
| 7116 | SelfHostedIter::Deny)) { |
| 7117 | // [stack] NEXT ITER RECEIVED ITER |
| 7118 | return false; |
| 7119 | } |
| 7120 | // Steps 7.b.iii.5-6. |
| 7121 | if (!emit2(JSOp::ThrowMsg, uint8_t(ThrowMsgKind::IteratorNoThrow))) { |
| 7122 | // [stack] NEXT ITER RECEIVED ITER |
| 7123 | // [stack] # throw |
| 7124 | return false; |
| 7125 | } |
| 7126 | |
| 7127 | if (!ifThrowMethodIsNotDefined.emitEnd()) { |
| 7128 | return false; |
| 7129 | } |
| 7130 | } |
| 7131 | |
| 7132 | // Step 7.c. It must be a Return completion. |
| 7133 | if (!ifKind.emitElse()) { |
| 7134 | // [stack] NEXT ITER RECEIVED RESUMEKIND |
| 7135 | return false; |
| 7136 | } |
| 7137 | { |
| 7138 | if (!emit1(JSOp::Pop)) { |
| 7139 | // [stack] NEXT ITER RECEIVED |
| 7140 | return false; |
| 7141 | } |
| 7142 | |
| 7143 | // Step 7.c.i. |
| 7144 | // |
| 7145 | // Call iterator.return() for receiving a "forced return" completion from |
| 7146 | // the generator. |
| 7147 | |
| 7148 | // Step 7.c.ii. |
| 7149 | // |
| 7150 | // Get the "return" method. |
| 7151 | if (!emitDupAt(1)) { |
| 7152 | // [stack] NEXT ITER RECEIVED ITER |
| 7153 | return false; |
| 7154 | } |
| 7155 | if (!emit1(JSOp::Dup)) { |
| 7156 | // [stack] NEXT ITER RECEIVED ITER ITER |
| 7157 | return false; |
| 7158 | } |
| 7159 | if (!emitAtomOp(JSOp::GetProp, |
| 7160 | TaggedParserAtomIndex::WellKnown::return_())) { |
| 7161 | // [stack] NEXT ITER RECEIVED ITER RET |
| 7162 | return false; |
| 7163 | } |
| 7164 | |
| 7165 | // Step 7.c.iii. |
| 7166 | // |
| 7167 | // Do nothing if "return" is undefined or null. |
| 7168 | InternalIfEmitter ifReturnMethodIsDefined(this); |
| 7169 | if (!emit1(JSOp::IsNullOrUndefined)) { |
| 7170 | // [stack] NEXT ITER RECEIVED ITER RET NULL-OR-UNDEF |
| 7171 | return false; |
| 7172 | } |
| 7173 | |
| 7174 | // Step 7.c.iv. |
| 7175 | // |
| 7176 | // Call "return" with the argument passed to Generator.prototype.return. |
| 7177 | if (!ifReturnMethodIsDefined.emitThenElse( |
| 7178 | IfEmitter::ConditionKind::Negative)) { |
| 7179 | // [stack] NEXT ITER RECEIVED ITER RET |
| 7180 | return false; |
| 7181 | } |
| 7182 | if (!emit1(JSOp::Swap)) { |
| 7183 | // [stack] NEXT ITER RECEIVED RET ITER |
| 7184 | return false; |
| 7185 | } |
| 7186 | if (!emit2(JSOp::Pick, 2)) { |
| 7187 | // [stack] NEXT ITER RET ITER RECEIVED |
| 7188 | return false; |
| 7189 | } |
| 7190 | if (!emitCall(JSOp::Call, 1)) { |
| 7191 | // [stack] NEXT ITER RESULT |
| 7192 | return false; |
| 7193 | } |
| 7194 | |
| 7195 | // Step 7.c.v. |
| 7196 | if (iterKind == IteratorKind::Async) { |
| 7197 | if (!emitAwaitInInnermostScope()) { |
| 7198 | // [stack] NEXT ITER RESULT |
| 7199 | return false; |
| 7200 | } |
| 7201 | } |
| 7202 | |
| 7203 | // Step 7.c.vi. |
| 7204 | if (!emitCheckIsObj(CheckIsObjectKind::IteratorReturn)) { |
| 7205 | // [stack] NEXT ITER RESULT |
| 7206 | return false; |
| 7207 | } |
| 7208 | |
| 7209 | // Check if the returned object from iterator.return() is done. If not, |
| 7210 | // continue yielding. |
| 7211 | |
| 7212 | // Steps 7.c.vii-viii. |
| 7213 | InternalIfEmitter ifReturnDone(this); |
| 7214 | if (!emit1(JSOp::Dup)) { |
| 7215 | // [stack] NEXT ITER RESULT RESULT |
| 7216 | return false; |
| 7217 | } |
| 7218 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::done())) { |
| 7219 | // [stack] NEXT ITER RESULT DONE |
| 7220 | return false; |
| 7221 | } |
| 7222 | if (!ifReturnDone.emitThenElse()) { |
| 7223 | // [stack] NEXT ITER RESULT |
| 7224 | return false; |
| 7225 | } |
| 7226 | |
| 7227 | // Step 7.c.viii.1. |
| 7228 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::value())) { |
| 7229 | // [stack] NEXT ITER VALUE |
| 7230 | return false; |
| 7231 | } |
| 7232 | if (!ifReturnDone.emitElse()) { |
| 7233 | // [stack] NEXT ITER RESULT |
| 7234 | return false; |
| 7235 | } |
| 7236 | |
| 7237 | // Jump to continue label for steps 7.c.ix-x. |
| 7238 | if (!emitJump(JSOp::Goto, &loopInfo.continues)) { |
| 7239 | // [stack] NEXT ITER RESULT |
| 7240 | return false; |
| 7241 | } |
| 7242 | |
| 7243 | if (!ifReturnDone.emitEnd()) { |
| 7244 | // [stack] NEXT ITER VALUE |
| 7245 | return false; |
| 7246 | } |
| 7247 | |
| 7248 | // Step 7.c.iii. |
| 7249 | if (!ifReturnMethodIsDefined.emitElse()) { |
| 7250 | // [stack] NEXT ITER RECEIVED ITER RET |
| 7251 | return false; |
| 7252 | } |
| 7253 | if (!emitPopN(2)) { |
| 7254 | // [stack] NEXT ITER RECEIVED |
| 7255 | return false; |
| 7256 | } |
| 7257 | if (iterKind == IteratorKind::Async) { |
| 7258 | // Step 7.c.iii.1. |
| 7259 | if (!emitAwaitInInnermostScope()) { |
| 7260 | // [stack] NEXT ITER RECEIVED |
| 7261 | return false; |
| 7262 | } |
| 7263 | } |
| 7264 | if (!ifReturnMethodIsDefined.emitEnd()) { |
| 7265 | // [stack] NEXT ITER RECEIVED |
| 7266 | return false; |
| 7267 | } |
| 7268 | |
| 7269 | // Perform a "forced generator return". |
| 7270 | // |
| 7271 | // Step 7.c.iii.2. |
| 7272 | // Step 7.c.viii.2. |
| 7273 | if (!emit1(JSOp::SetRval)) { |
| 7274 | // [stack] NEXT ITER |
| 7275 | return false; |
| 7276 | } |
| 7277 | { |
| 7278 | NonLocalExitControl nle(this, NonLocalExitKind::Return); |
| 7279 | if (!nle.emitReturn()) { |
| 7280 | return false; |
| 7281 | } |
| 7282 | } |
| 7283 | bytecodeSection().setStackDepth(startDepth - 1); |
| 7284 | } |
| 7285 | |
| 7286 | if (!ifKind.emitEnd()) { |
| 7287 | // [stack] NEXT ITER RESULT |
| 7288 | return false; |
| 7289 | } |
| 7290 | |
| 7291 | // Shared tail for Normal/Throw completions. |
| 7292 | // |
| 7293 | // Steps 7.a.iv-v. |
| 7294 | // Steps 7.b.ii.5-6. |
| 7295 | // |
| 7296 | // [stack] NEXT ITER RESULT |
| 7297 | |
| 7298 | // if (result.done) break; |
| 7299 | if (!emit1(JSOp::Dup)) { |
| 7300 | // [stack] NEXT ITER RESULT RESULT |
| 7301 | return false; |
| 7302 | } |
| 7303 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::done())) { |
| 7304 | // [stack] NEXT ITER RESULT DONE |
| 7305 | return false; |
| 7306 | } |
| 7307 | if (!emitJump(JSOp::JumpIfTrue, &loopInfo.breaks)) { |
| 7308 | // [stack] NEXT ITER RESULT |
| 7309 | return false; |
| 7310 | } |
| 7311 | |
| 7312 | // Steps 7.a.vi-vii. |
| 7313 | // Steps 7.b.ii.7-8. |
| 7314 | // Steps 7.c.ix-x. |
| 7315 | if (!loopInfo.emitContinueTarget(this)) { |
| 7316 | // [stack] NEXT ITER RESULT |
| 7317 | return false; |
| 7318 | } |
| 7319 | if (iterKind == IteratorKind::Async) { |
| 7320 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::value())) { |
| 7321 | // [stack] NEXT ITER RESULT |
| 7322 | return false; |
| 7323 | } |
| 7324 | } |
| 7325 | if (!emitGetDotGeneratorInInnermostScope()) { |
| 7326 | // [stack] NEXT ITER RESULT GENOBJ |
| 7327 | return false; |
| 7328 | } |
| 7329 | if (!emitYieldOp(JSOp::Yield)) { |
| 7330 | // [stack] NEXT ITER RVAL RESUMEKIND |
| 7331 | return false; |
| 7332 | } |
| 7333 | if (!loopInfo.emitLoopEnd(this, JSOp::Goto, TryNoteKind::Loop)) { |
| 7334 | // [stack] NEXT ITER RVAL RESUMEKIND |
| 7335 | return false; |
| 7336 | } |
| 7337 | |
| 7338 | // Jumps to this point have 3 (instead of 4) values on the stack. |
| 7339 | MOZ_ASSERT(bytecodeSection().stackDepth() == startDepth)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() == startDepth)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bytecodeSection().stackDepth() == startDepth))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() == startDepth" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7339); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() == startDepth" ")"); do { MOZ_CrashSequence(__null, 7339); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7340 | bytecodeSection().setStackDepth(startDepth - 1); |
| 7341 | |
| 7342 | // [stack] NEXT ITER RESULT |
| 7343 | |
| 7344 | // Step 7.a.v.1. |
| 7345 | // Step 7.b.ii.6.a. |
| 7346 | // |
| 7347 | // result.value |
| 7348 | if (!emit2(JSOp::Unpick, 2)) { |
| 7349 | // [stack] RESULT NEXT ITER |
| 7350 | return false; |
| 7351 | } |
| 7352 | if (!emitPopN(2)) { |
| 7353 | // [stack] RESULT |
| 7354 | return false; |
| 7355 | } |
| 7356 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::value())) { |
| 7357 | // [stack] VALUE |
| 7358 | return false; |
| 7359 | } |
| 7360 | |
| 7361 | MOZ_ASSERT(bytecodeSection().stackDepth() == startDepth - 3)do { static_assert( mozilla::detail::AssertionConditionType< decltype(bytecodeSection().stackDepth() == startDepth - 3)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(bytecodeSection().stackDepth() == startDepth - 3))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bytecodeSection().stackDepth() == startDepth - 3" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7361); AnnotateMozCrashReason("MOZ_ASSERT" "(" "bytecodeSection().stackDepth() == startDepth - 3" ")"); do { MOZ_CrashSequence(__null, 7361); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7362 | |
| 7363 | return true; |
| 7364 | } |
| 7365 | |
| 7366 | bool BytecodeEmitter::emitStatementList(ListNode* stmtList) { |
| 7367 | for (ParseNode* stmt : stmtList->contents()) { |
| 7368 | if (!emitTree(stmt)) { |
| 7369 | return false; |
| 7370 | } |
| 7371 | } |
| 7372 | return true; |
| 7373 | } |
| 7374 | |
| 7375 | bool BytecodeEmitter::emitExpressionStatement(UnaryNode* exprStmt) { |
| 7376 | MOZ_ASSERT(exprStmt->isKind(ParseNodeKind::ExpressionStmt))do { static_assert( mozilla::detail::AssertionConditionType< decltype(exprStmt->isKind(ParseNodeKind::ExpressionStmt))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(exprStmt->isKind(ParseNodeKind::ExpressionStmt))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("exprStmt->isKind(ParseNodeKind::ExpressionStmt)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7376); AnnotateMozCrashReason("MOZ_ASSERT" "(" "exprStmt->isKind(ParseNodeKind::ExpressionStmt)" ")"); do { MOZ_CrashSequence(__null, 7376); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7377 | |
| 7378 | /* |
| 7379 | * Top-level or called-from-a-native JS_Execute/EvaluateScript, |
| 7380 | * debugger, and eval frames may need the value of the ultimate |
| 7381 | * expression statement as the script's result, despite the fact |
| 7382 | * that it appears useless to the compiler. |
| 7383 | * |
| 7384 | * API users may also set the ReadOnlyCompileOptions::noScriptRval option when |
| 7385 | * calling JS_Compile* to suppress JSOp::SetRval. |
| 7386 | */ |
| 7387 | bool wantval = false; |
| 7388 | bool useful = false; |
| 7389 | if (sc->isTopLevelContext()) { |
| 7390 | useful = wantval = !sc->noScriptRval(); |
| 7391 | } |
| 7392 | |
| 7393 | /* Don't eliminate expressions with side effects. */ |
| 7394 | ParseNode* expr = exprStmt->kid(); |
| 7395 | if (!useful) { |
| 7396 | if (!checkSideEffects(expr, &useful)) { |
| 7397 | return false; |
| 7398 | } |
| 7399 | |
| 7400 | /* |
| 7401 | * Don't eliminate apparently useless expressions if they are labeled |
| 7402 | * expression statements. The startOffset() test catches the case |
| 7403 | * where we are nesting in emitTree for a labeled compound statement. |
| 7404 | */ |
| 7405 | if (innermostNestableControl && |
| 7406 | innermostNestableControl->is<LabelControl>() && |
| 7407 | innermostNestableControl->as<LabelControl>().startOffset() >= |
| 7408 | bytecodeSection().offset()) { |
| 7409 | useful = true; |
| 7410 | } |
| 7411 | } |
| 7412 | |
| 7413 | if (useful) { |
| 7414 | ValueUsage valueUsage = |
| 7415 | wantval ? ValueUsage::WantValue : ValueUsage::IgnoreValue; |
| 7416 | ExpressionStatementEmitter ese(this, valueUsage); |
| 7417 | if (!ese.prepareForExpr(exprStmt->pn_pos.begin)) { |
| 7418 | return false; |
| 7419 | } |
| 7420 | if (!markStepBreakpoint()) { |
| 7421 | return false; |
| 7422 | } |
| 7423 | if (!emitTree(expr, valueUsage)) { |
| 7424 | return false; |
| 7425 | } |
| 7426 | if (!ese.emitEnd()) { |
| 7427 | return false; |
| 7428 | } |
| 7429 | } |
| 7430 | |
| 7431 | return true; |
| 7432 | } |
| 7433 | |
| 7434 | bool BytecodeEmitter::emitDeleteName(UnaryNode* deleteNode) { |
| 7435 | MOZ_ASSERT(deleteNode->isKind(ParseNodeKind::DeleteNameExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(deleteNode->isKind(ParseNodeKind::DeleteNameExpr) )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(deleteNode->isKind(ParseNodeKind::DeleteNameExpr) ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "deleteNode->isKind(ParseNodeKind::DeleteNameExpr)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7435); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deleteNode->isKind(ParseNodeKind::DeleteNameExpr)" ")"); do { MOZ_CrashSequence(__null, 7435); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7436 | |
| 7437 | NameNode* nameExpr = &deleteNode->kid()->as<NameNode>(); |
| 7438 | MOZ_ASSERT(nameExpr->isKind(ParseNodeKind::Name))do { static_assert( mozilla::detail::AssertionConditionType< decltype(nameExpr->isKind(ParseNodeKind::Name))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(nameExpr->isKind(ParseNodeKind::Name)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("nameExpr->isKind(ParseNodeKind::Name)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7438); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nameExpr->isKind(ParseNodeKind::Name)" ")"); do { MOZ_CrashSequence(__null, 7438); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7439 | |
| 7440 | return emitAtomOp(JSOp::DelName, nameExpr->atom()); |
| 7441 | } |
| 7442 | |
| 7443 | bool BytecodeEmitter::emitDeleteProperty(UnaryNode* deleteNode) { |
| 7444 | MOZ_ASSERT(deleteNode->isKind(ParseNodeKind::DeletePropExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(deleteNode->isKind(ParseNodeKind::DeletePropExpr) )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(deleteNode->isKind(ParseNodeKind::DeletePropExpr) ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "deleteNode->isKind(ParseNodeKind::DeletePropExpr)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7444); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deleteNode->isKind(ParseNodeKind::DeletePropExpr)" ")"); do { MOZ_CrashSequence(__null, 7444); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7445 | |
| 7446 | NonOptionalPropertyAccessBase* propExpr = |
| 7447 | &deleteNode->kid()->as<NonOptionalPropertyAccessBase>(); |
| 7448 | PropOpEmitter poe(this, PropOpEmitter::Kind::Delete, |
| 7449 | propExpr->isSuper() ? PropOpEmitter::ObjKind::Super |
| 7450 | : PropOpEmitter::ObjKind::Other); |
| 7451 | |
| 7452 | if (!poe.prepareForObj()) { |
| 7453 | return false; |
| 7454 | } |
| 7455 | |
| 7456 | if (propExpr->isSuper()) { |
| 7457 | // The expression |delete super.foo;| has to evaluate |super.foo|, which |
| 7458 | // could throw if |this| hasn't yet been set by a |super(...)| call. |
| 7459 | auto* base = &propExpr->expression().as<UnaryNode>(); |
| 7460 | if (!emitGetThisForSuperBase(base)) { |
| 7461 | // [stack] THIS |
| 7462 | return false; |
| 7463 | } |
| 7464 | } else { |
| 7465 | if (!emitPropLHS(propExpr)) { |
| 7466 | // [stack] OBJ |
| 7467 | return false; |
| 7468 | } |
| 7469 | } |
| 7470 | |
| 7471 | if (!poe.emitDelete(propExpr->key().atom())) { |
| 7472 | // [stack] # if Super |
| 7473 | // [stack] THIS |
| 7474 | // [stack] # otherwise |
| 7475 | // [stack] SUCCEEDED |
| 7476 | return false; |
| 7477 | } |
| 7478 | |
| 7479 | return true; |
| 7480 | } |
| 7481 | |
| 7482 | bool BytecodeEmitter::emitDeleteElement(UnaryNode* deleteNode) { |
| 7483 | MOZ_ASSERT(deleteNode->isKind(ParseNodeKind::DeleteElemExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(deleteNode->isKind(ParseNodeKind::DeleteElemExpr) )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(deleteNode->isKind(ParseNodeKind::DeleteElemExpr) ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "deleteNode->isKind(ParseNodeKind::DeleteElemExpr)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7483); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deleteNode->isKind(ParseNodeKind::DeleteElemExpr)" ")"); do { MOZ_CrashSequence(__null, 7483); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7484 | |
| 7485 | auto* elemExpr = &deleteNode->kid()->as<PropertyByValue>(); |
| 7486 | bool isSuper = elemExpr->isSuper(); |
| 7487 | MOZ_ASSERT(!elemExpr->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elemExpr->key().isKind(ParseNodeKind::PrivateName ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elemExpr->key().isKind(ParseNodeKind::PrivateName )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!elemExpr->key().isKind(ParseNodeKind::PrivateName)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7487); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elemExpr->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 7487); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7488 | ElemOpEmitter eoe( |
| 7489 | this, ElemOpEmitter::Kind::Delete, |
| 7490 | isSuper ? ElemOpEmitter::ObjKind::Super : ElemOpEmitter::ObjKind::Other); |
| 7491 | |
| 7492 | if (!emitElemObjAndKey(elemExpr, eoe)) { |
| 7493 | // [stack] # if Super |
| 7494 | // [stack] THIS KEY |
| 7495 | // [stack] # otherwise |
| 7496 | // [stack] OBJ KEY |
| 7497 | return false; |
| 7498 | } |
| 7499 | |
| 7500 | if (!eoe.emitDelete()) { |
| 7501 | // [stack] # if Super |
| 7502 | // [stack] THIS |
| 7503 | // [stack] # otherwise |
| 7504 | // [stack] SUCCEEDED |
| 7505 | return false; |
| 7506 | } |
| 7507 | |
| 7508 | return true; |
| 7509 | } |
| 7510 | |
| 7511 | bool BytecodeEmitter::emitDeleteExpression(UnaryNode* deleteNode) { |
| 7512 | MOZ_ASSERT(deleteNode->isKind(ParseNodeKind::DeleteExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(deleteNode->isKind(ParseNodeKind::DeleteExpr))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(deleteNode->isKind(ParseNodeKind::DeleteExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("deleteNode->isKind(ParseNodeKind::DeleteExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7512); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deleteNode->isKind(ParseNodeKind::DeleteExpr)" ")"); do { MOZ_CrashSequence(__null, 7512); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7513 | |
| 7514 | ParseNode* expression = deleteNode->kid(); |
| 7515 | |
| 7516 | // If useless, just emit JSOp::True; otherwise convert |delete <expr>| to |
| 7517 | // effectively |<expr>, true|. |
| 7518 | bool useful = false; |
| 7519 | if (!checkSideEffects(expression, &useful)) { |
| 7520 | return false; |
| 7521 | } |
| 7522 | |
| 7523 | if (useful) { |
| 7524 | if (!emitTree(expression)) { |
| 7525 | return false; |
| 7526 | } |
| 7527 | if (!emit1(JSOp::Pop)) { |
| 7528 | return false; |
| 7529 | } |
| 7530 | } |
| 7531 | |
| 7532 | return emit1(JSOp::True); |
| 7533 | } |
| 7534 | |
| 7535 | bool BytecodeEmitter::emitDeleteOptionalChain(UnaryNode* deleteNode) { |
| 7536 | MOZ_ASSERT(deleteNode->isKind(ParseNodeKind::DeleteOptionalChainExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(deleteNode->isKind(ParseNodeKind::DeleteOptionalChainExpr ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(deleteNode->isKind(ParseNodeKind::DeleteOptionalChainExpr )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("deleteNode->isKind(ParseNodeKind::DeleteOptionalChainExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7536); AnnotateMozCrashReason("MOZ_ASSERT" "(" "deleteNode->isKind(ParseNodeKind::DeleteOptionalChainExpr)" ")"); do { MOZ_CrashSequence(__null, 7536); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7537 | |
| 7538 | OptionalEmitter oe(this, bytecodeSection().stackDepth()); |
| 7539 | |
| 7540 | ParseNode* kid = deleteNode->kid(); |
| 7541 | switch (kid->getKind()) { |
| 7542 | case ParseNodeKind::ElemExpr: |
| 7543 | case ParseNodeKind::OptionalElemExpr: { |
| 7544 | auto* elemExpr = &kid->as<PropertyByValueBase>(); |
| 7545 | if (!emitDeleteElementInOptChain(elemExpr, oe)) { |
| 7546 | // [stack] # If shortcircuit |
| 7547 | // [stack] UNDEFINED-OR-NULL |
| 7548 | // [stack] # otherwise |
| 7549 | // [stack] SUCCEEDED |
| 7550 | return false; |
| 7551 | } |
| 7552 | |
| 7553 | break; |
| 7554 | } |
| 7555 | case ParseNodeKind::ArgumentsLength: |
| 7556 | case ParseNodeKind::DotExpr: |
| 7557 | case ParseNodeKind::OptionalDotExpr: { |
| 7558 | auto* propExpr = &kid->as<PropertyAccessBase>(); |
| 7559 | if (!emitDeletePropertyInOptChain(propExpr, oe)) { |
| 7560 | // [stack] # If shortcircuit |
| 7561 | // [stack] UNDEFINED-OR-NULL |
| 7562 | // [stack] # otherwise |
| 7563 | // [stack] SUCCEEDED |
| 7564 | return false; |
| 7565 | } |
| 7566 | break; |
| 7567 | } |
| 7568 | default: |
| 7569 | MOZ_ASSERT_UNREACHABLE("Unrecognized optional delete ParseNodeKind")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: " "Unrecognized optional delete ParseNodeKind" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7569); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "Unrecognized optional delete ParseNodeKind" ")"); do { MOZ_CrashSequence(__null, 7569); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7570 | } |
| 7571 | |
| 7572 | if (!oe.emitOptionalJumpTarget(JSOp::True)) { |
| 7573 | // [stack] # If shortcircuit |
| 7574 | // [stack] TRUE |
| 7575 | // [stack] # otherwise |
| 7576 | // [stack] SUCCEEDED |
| 7577 | return false; |
| 7578 | } |
| 7579 | |
| 7580 | return true; |
| 7581 | } |
| 7582 | |
| 7583 | bool BytecodeEmitter::emitDeletePropertyInOptChain(PropertyAccessBase* propExpr, |
| 7584 | OptionalEmitter& oe) { |
| 7585 | MOZ_ASSERT(!propExpr->isSuper())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!propExpr->isSuper())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!propExpr->isSuper()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("!propExpr->isSuper()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7585); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!propExpr->isSuper()" ")"); do { MOZ_CrashSequence(__null, 7585); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7586 | PropOpEmitter poe(this, PropOpEmitter::Kind::Delete, |
| 7587 | PropOpEmitter::ObjKind::Other); |
| 7588 | |
| 7589 | if (!poe.prepareForObj()) { |
| 7590 | // [stack] |
| 7591 | return false; |
| 7592 | } |
| 7593 | if (!emitOptionalTree(&propExpr->expression(), oe)) { |
| 7594 | // [stack] OBJ |
| 7595 | return false; |
| 7596 | } |
| 7597 | if (propExpr->isKind(ParseNodeKind::OptionalDotExpr)) { |
| 7598 | if (!oe.emitJumpShortCircuit()) { |
| 7599 | // [stack] # if Jump |
| 7600 | // [stack] UNDEFINED-OR-NULL |
| 7601 | // [stack] # otherwise |
| 7602 | // [stack] OBJ |
| 7603 | return false; |
| 7604 | } |
| 7605 | } |
| 7606 | |
| 7607 | if (!poe.emitDelete(propExpr->key().atom())) { |
| 7608 | // [stack] SUCCEEDED |
| 7609 | return false; |
| 7610 | } |
| 7611 | |
| 7612 | return true; |
| 7613 | } |
| 7614 | |
| 7615 | bool BytecodeEmitter::emitDeleteElementInOptChain(PropertyByValueBase* elemExpr, |
| 7616 | OptionalEmitter& oe) { |
| 7617 | MOZ_ASSERT_IF(elemExpr->is<PropertyByValue>(),do { if (elemExpr->is<PropertyByValue>()) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(!elemExpr ->as<PropertyByValue>().isSuper())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!elemExpr->as<PropertyByValue >().isSuper()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!elemExpr->as<PropertyByValue>().isSuper()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7618); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elemExpr->as<PropertyByValue>().isSuper()" ")"); do { MOZ_CrashSequence(__null, 7618); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false) |
| 7618 | !elemExpr->as<PropertyByValue>().isSuper())do { if (elemExpr->is<PropertyByValue>()) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(!elemExpr ->as<PropertyByValue>().isSuper())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!elemExpr->as<PropertyByValue >().isSuper()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!elemExpr->as<PropertyByValue>().isSuper()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7618); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elemExpr->as<PropertyByValue>().isSuper()" ")"); do { MOZ_CrashSequence(__null, 7618); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 7619 | ElemOpEmitter eoe(this, ElemOpEmitter::Kind::Delete, |
| 7620 | ElemOpEmitter::ObjKind::Other); |
| 7621 | |
| 7622 | if (!eoe.prepareForObj()) { |
| 7623 | // [stack] |
| 7624 | return false; |
| 7625 | } |
| 7626 | |
| 7627 | if (!emitOptionalTree(&elemExpr->expression(), oe)) { |
| 7628 | // [stack] OBJ |
| 7629 | return false; |
| 7630 | } |
| 7631 | |
| 7632 | if (elemExpr->isKind(ParseNodeKind::OptionalElemExpr)) { |
| 7633 | if (!oe.emitJumpShortCircuit()) { |
| 7634 | // [stack] # if Jump |
| 7635 | // [stack] UNDEFINED-OR-NULL |
| 7636 | // [stack] # otherwise |
| 7637 | // [stack] OBJ |
| 7638 | return false; |
| 7639 | } |
| 7640 | } |
| 7641 | |
| 7642 | if (!eoe.prepareForKey()) { |
| 7643 | // [stack] OBJ |
| 7644 | return false; |
| 7645 | } |
| 7646 | |
| 7647 | if (!emitTree(&elemExpr->key())) { |
| 7648 | // [stack] OBJ KEY |
| 7649 | return false; |
| 7650 | } |
| 7651 | |
| 7652 | if (!eoe.emitDelete()) { |
| 7653 | // [stack] SUCCEEDED |
| 7654 | return false; |
| 7655 | } |
| 7656 | |
| 7657 | return true; |
| 7658 | } |
| 7659 | |
| 7660 | bool BytecodeEmitter::emitDebugCheckSelfHosted() { |
| 7661 | // [stack] CALLEE |
| 7662 | |
| 7663 | #ifdef DEBUG1 |
| 7664 | if (!emit1(JSOp::DebugCheckSelfHosted)) { |
| 7665 | // [stack] CALLEE |
| 7666 | return false; |
| 7667 | } |
| 7668 | #endif |
| 7669 | |
| 7670 | return true; |
| 7671 | } |
| 7672 | |
| 7673 | bool BytecodeEmitter::emitSelfHostedCallFunction(CallNode* callNode, JSOp op) { |
| 7674 | // Special-casing of callFunction to emit bytecode that directly |
| 7675 | // invokes the callee with the correct |this| object and arguments. |
| 7676 | // callFunction(fun, thisArg, arg0, arg1) thus becomes: |
| 7677 | // - emit lookup for fun |
| 7678 | // - emit lookup for thisArg |
| 7679 | // - emit lookups for arg0, arg1 |
| 7680 | // |
| 7681 | // argc is set to the amount of actually emitted args and the |
| 7682 | // emitting of args below is disabled by setting emitArgs to false. |
| 7683 | NameNode* calleeNode = &callNode->callee()->as<NameNode>(); |
| 7684 | ListNode* argsList = callNode->args(); |
| 7685 | |
| 7686 | MOZ_ASSERT(argsList->count() >= 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() >= 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() >= 2 ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "argsList->count() >= 2", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7686); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() >= 2" ")"); do { MOZ_CrashSequence(__null, 7686); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7687 | |
| 7688 | MOZ_ASSERT(callNode->callOp() == JSOp::Call)do { static_assert( mozilla::detail::AssertionConditionType< decltype(callNode->callOp() == JSOp::Call)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(callNode->callOp() == JSOp ::Call))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("callNode->callOp() == JSOp::Call", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7688); AnnotateMozCrashReason("MOZ_ASSERT" "(" "callNode->callOp() == JSOp::Call" ")"); do { MOZ_CrashSequence(__null, 7688); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7689 | |
| 7690 | bool constructing = |
| 7691 | calleeNode->name() == |
| 7692 | TaggedParserAtomIndex::WellKnown::constructContentFunction(); |
| 7693 | ParseNode* funNode = argsList->head(); |
| 7694 | |
| 7695 | if (!emitTree(funNode)) { |
| 7696 | // [stack] CALLEE |
| 7697 | return false; |
| 7698 | } |
| 7699 | |
| 7700 | #ifdef DEBUG1 |
| 7701 | MOZ_ASSERT(op == JSOp::Call || op == JSOp::CallContent ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::Call || op == JSOp::CallContent || op == JSOp::NewContent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::Call || op == JSOp ::CallContent || op == JSOp::NewContent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::Call || op == JSOp::CallContent || op == JSOp::NewContent" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7702); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::Call || op == JSOp::CallContent || op == JSOp::NewContent" ")"); do { MOZ_CrashSequence(__null, 7702); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 7702 | op == JSOp::NewContent)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::Call || op == JSOp::CallContent || op == JSOp::NewContent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::Call || op == JSOp ::CallContent || op == JSOp::NewContent))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::Call || op == JSOp::CallContent || op == JSOp::NewContent" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7702); AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::Call || op == JSOp::CallContent || op == JSOp::NewContent" ")"); do { MOZ_CrashSequence(__null, 7702); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7703 | if (op == JSOp::Call) { |
| 7704 | if (!emitDebugCheckSelfHosted()) { |
| 7705 | // [stack] CALLEE |
| 7706 | return false; |
| 7707 | } |
| 7708 | } |
| 7709 | #endif |
| 7710 | |
| 7711 | ParseNode* thisOrNewTarget = funNode->pn_next; |
| 7712 | if (constructing) { |
| 7713 | // Save off the new.target value, but here emit a proper |this| for a |
| 7714 | // constructing call. |
| 7715 | if (!emit1(JSOp::IsConstructing)) { |
| 7716 | // [stack] CALLEE IS_CONSTRUCTING |
| 7717 | return false; |
| 7718 | } |
| 7719 | } else { |
| 7720 | // It's |this|, emit it. |
| 7721 | if (!emitTree(thisOrNewTarget)) { |
| 7722 | // [stack] CALLEE THIS |
| 7723 | return false; |
| 7724 | } |
| 7725 | } |
| 7726 | |
| 7727 | for (ParseNode* argpn : argsList->contentsFrom(thisOrNewTarget->pn_next)) { |
| 7728 | if (!emitTree(argpn)) { |
| 7729 | // [stack] CALLEE ... ARGS... |
| 7730 | return false; |
| 7731 | } |
| 7732 | } |
| 7733 | |
| 7734 | if (constructing) { |
| 7735 | if (!emitTree(thisOrNewTarget)) { |
| 7736 | // [stack] CALLEE IS_CONSTRUCTING ARGS... NEW.TARGET |
| 7737 | return false; |
| 7738 | } |
| 7739 | } |
| 7740 | |
| 7741 | uint32_t argc = argsList->count() - 2; |
| 7742 | if (!emitCall(op, argc)) { |
| 7743 | // [stack] RVAL |
| 7744 | return false; |
| 7745 | } |
| 7746 | |
| 7747 | return true; |
| 7748 | } |
| 7749 | |
| 7750 | bool BytecodeEmitter::emitSelfHostedResumeGenerator(CallNode* callNode) { |
| 7751 | ListNode* argsList = callNode->args(); |
| 7752 | |
| 7753 | // Syntax: resumeGenerator(gen, value, 'next'|'throw'|'return') |
| 7754 | MOZ_ASSERT(argsList->count() == 3)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 3)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 3))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 3" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7754); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 3" ")"); do { MOZ_CrashSequence(__null, 7754); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7755 | |
| 7756 | ParseNode* genNode = argsList->head(); |
| 7757 | if (!emitTree(genNode)) { |
| 7758 | // [stack] GENERATOR |
| 7759 | return false; |
| 7760 | } |
| 7761 | |
| 7762 | ParseNode* valNode = genNode->pn_next; |
| 7763 | if (!emitTree(valNode)) { |
| 7764 | // [stack] GENERATOR VALUE |
| 7765 | return false; |
| 7766 | } |
| 7767 | |
| 7768 | ParseNode* kindNode = valNode->pn_next; |
| 7769 | MOZ_ASSERT(kindNode->isKind(ParseNodeKind::StringExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(kindNode->isKind(ParseNodeKind::StringExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(kindNode->isKind(ParseNodeKind::StringExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("kindNode->isKind(ParseNodeKind::StringExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7769); AnnotateMozCrashReason("MOZ_ASSERT" "(" "kindNode->isKind(ParseNodeKind::StringExpr)" ")"); do { MOZ_CrashSequence(__null, 7769); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7770 | GeneratorResumeKind kind = |
| 7771 | ParserAtomToResumeKind(kindNode->as<NameNode>().atom()); |
| 7772 | MOZ_ASSERT(!kindNode->pn_next)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!kindNode->pn_next)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!kindNode->pn_next))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("!kindNode->pn_next" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7772); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!kindNode->pn_next" ")"); do { MOZ_CrashSequence(__null, 7772); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7773 | |
| 7774 | if (!emitPushResumeKind(kind)) { |
| 7775 | // [stack] GENERATOR VALUE RESUMEKIND |
| 7776 | return false; |
| 7777 | } |
| 7778 | |
| 7779 | if (!emit1(JSOp::Resume)) { |
| 7780 | // [stack] RVAL |
| 7781 | return false; |
| 7782 | } |
| 7783 | |
| 7784 | return true; |
| 7785 | } |
| 7786 | |
| 7787 | bool BytecodeEmitter::emitSelfHostedAllowContentIter(CallNode* callNode) { |
| 7788 | ListNode* argsList = callNode->args(); |
| 7789 | |
| 7790 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7790); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 7790); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7791 | |
| 7792 | // We're just here as a sentinel. Pass the value through directly. |
| 7793 | return emitTree(argsList->head()); |
| 7794 | } |
| 7795 | |
| 7796 | bool BytecodeEmitter::emitSelfHostedAllowContentIterWith(CallNode* callNode) { |
| 7797 | ListNode* argsList = callNode->args(); |
| 7798 | |
| 7799 | MOZ_ASSERT(argsList->count() == 2 || argsList->count() == 3)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 2 || argsList->count() == 3)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(argsList->count() == 2 || argsList->count() == 3))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("argsList->count() == 2 || argsList->count() == 3", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 7799); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 2 || argsList->count() == 3" ")"); do { MOZ_CrashSequence(__null, 7799); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7800 | |
| 7801 | // We're just here as a sentinel. Pass the value through directly. |
| 7802 | return emitTree(argsList->head()); |
| 7803 | } |
| 7804 | |
| 7805 | bool BytecodeEmitter::emitSelfHostedAllowContentIterWithNext( |
| 7806 | CallNode* callNode) { |
| 7807 | ListNode* argsList = callNode->args(); |
| 7808 | |
| 7809 | MOZ_ASSERT(argsList->count() == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 2))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7809); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 2" ")"); do { MOZ_CrashSequence(__null, 7809); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7810 | |
| 7811 | // We're just here as a sentinel. Pass the value through directly. |
| 7812 | return emitTree(argsList->head()); |
| 7813 | } |
| 7814 | |
| 7815 | bool BytecodeEmitter::emitSelfHostedDefineDataProperty(CallNode* callNode) { |
| 7816 | ListNode* argsList = callNode->args(); |
| 7817 | |
| 7818 | // Only optimize when 3 arguments are passed. |
| 7819 | MOZ_ASSERT(argsList->count() == 3)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 3)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 3))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 3" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7819); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 3" ")"); do { MOZ_CrashSequence(__null, 7819); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7820 | |
| 7821 | ParseNode* objNode = argsList->head(); |
| 7822 | if (!emitTree(objNode)) { |
| 7823 | return false; |
| 7824 | } |
| 7825 | |
| 7826 | ParseNode* idNode = objNode->pn_next; |
| 7827 | if (!emitTree(idNode)) { |
| 7828 | return false; |
| 7829 | } |
| 7830 | |
| 7831 | ParseNode* valNode = idNode->pn_next; |
| 7832 | if (!emitTree(valNode)) { |
| 7833 | return false; |
| 7834 | } |
| 7835 | |
| 7836 | // This will leave the object on the stack instead of pushing |undefined|, |
| 7837 | // but that's fine because the self-hosted code doesn't use the return |
| 7838 | // value. |
| 7839 | return emit1(JSOp::InitElem); |
| 7840 | } |
| 7841 | |
| 7842 | bool BytecodeEmitter::emitSelfHostedHasOwn(CallNode* callNode) { |
| 7843 | ListNode* argsList = callNode->args(); |
| 7844 | |
| 7845 | MOZ_ASSERT(argsList->count() == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 2))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7845); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 2" ")"); do { MOZ_CrashSequence(__null, 7845); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7846 | |
| 7847 | ParseNode* idNode = argsList->head(); |
| 7848 | if (!emitTree(idNode)) { |
| 7849 | return false; |
| 7850 | } |
| 7851 | |
| 7852 | ParseNode* objNode = idNode->pn_next; |
| 7853 | if (!emitTree(objNode)) { |
| 7854 | return false; |
| 7855 | } |
| 7856 | |
| 7857 | return emit1(JSOp::HasOwn); |
| 7858 | } |
| 7859 | |
| 7860 | bool BytecodeEmitter::emitSelfHostedGetPropertySuper(CallNode* callNode) { |
| 7861 | ListNode* argsList = callNode->args(); |
| 7862 | |
| 7863 | MOZ_ASSERT(argsList->count() == 3)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 3)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 3))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 3" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7863); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 3" ")"); do { MOZ_CrashSequence(__null, 7863); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7864 | |
| 7865 | ParseNode* objNode = argsList->head(); |
| 7866 | ParseNode* idNode = objNode->pn_next; |
| 7867 | ParseNode* receiverNode = idNode->pn_next; |
| 7868 | |
| 7869 | if (!emitTree(receiverNode)) { |
| 7870 | return false; |
| 7871 | } |
| 7872 | |
| 7873 | if (!emitTree(idNode)) { |
| 7874 | return false; |
| 7875 | } |
| 7876 | |
| 7877 | if (!emitTree(objNode)) { |
| 7878 | return false; |
| 7879 | } |
| 7880 | |
| 7881 | return emitElemOpBase(JSOp::GetElemSuper); |
| 7882 | } |
| 7883 | |
| 7884 | bool BytecodeEmitter::emitSelfHostedToNumeric(CallNode* callNode) { |
| 7885 | ListNode* argsList = callNode->args(); |
| 7886 | |
| 7887 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7887); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 7887); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7888 | |
| 7889 | ParseNode* argNode = argsList->head(); |
| 7890 | |
| 7891 | if (!emitTree(argNode)) { |
| 7892 | return false; |
| 7893 | } |
| 7894 | |
| 7895 | return emit1(JSOp::ToNumeric); |
| 7896 | } |
| 7897 | |
| 7898 | bool BytecodeEmitter::emitSelfHostedToString(CallNode* callNode) { |
| 7899 | ListNode* argsList = callNode->args(); |
| 7900 | |
| 7901 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7901); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 7901); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7902 | |
| 7903 | ParseNode* argNode = argsList->head(); |
| 7904 | |
| 7905 | if (!emitTree(argNode)) { |
| 7906 | return false; |
| 7907 | } |
| 7908 | |
| 7909 | return emit1(JSOp::ToString); |
| 7910 | } |
| 7911 | |
| 7912 | bool BytecodeEmitter::emitSelfHostedIsNullOrUndefined(CallNode* callNode) { |
| 7913 | ListNode* argsList = callNode->args(); |
| 7914 | |
| 7915 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7915); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 7915); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7916 | |
| 7917 | ParseNode* argNode = argsList->head(); |
| 7918 | |
| 7919 | if (!emitTree(argNode)) { |
| 7920 | // [stack] ARG |
| 7921 | return false; |
| 7922 | } |
| 7923 | if (!emit1(JSOp::IsNullOrUndefined)) { |
| 7924 | // [stack] ARG IS_NULL_OR_UNDEF |
| 7925 | return false; |
| 7926 | } |
| 7927 | if (!emit1(JSOp::Swap)) { |
| 7928 | // [stack] IS_NULL_OR_UNDEF ARG |
| 7929 | return false; |
| 7930 | } |
| 7931 | if (!emit1(JSOp::Pop)) { |
| 7932 | // [stack] IS_NULL_OR_UNDEF |
| 7933 | return false; |
| 7934 | } |
| 7935 | return true; |
| 7936 | } |
| 7937 | |
| 7938 | bool BytecodeEmitter::emitSelfHostedIteratorClose(CallNode* callNode) { |
| 7939 | ListNode* argsList = callNode->args(); |
| 7940 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7940); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 7940); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7941 | |
| 7942 | ParseNode* argNode = argsList->head(); |
| 7943 | if (!emitTree(argNode)) { |
| 7944 | // [stack] ARG |
| 7945 | return false; |
| 7946 | } |
| 7947 | |
| 7948 | if (!emit2(JSOp::CloseIter, uint8_t(CompletionKind::Normal))) { |
| 7949 | // [stack] |
| 7950 | return false; |
| 7951 | } |
| 7952 | |
| 7953 | // This is still a call node, so we must generate a stack value. |
| 7954 | if (!emit1(JSOp::Undefined)) { |
| 7955 | // [stack] RVAL |
| 7956 | return false; |
| 7957 | } |
| 7958 | |
| 7959 | return true; |
| 7960 | } |
| 7961 | |
| 7962 | bool BytecodeEmitter::emitSelfHostedGetBuiltinConstructorOrPrototype( |
| 7963 | CallNode* callNode, bool isConstructor) { |
| 7964 | ListNode* argsList = callNode->args(); |
| 7965 | |
| 7966 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 7966); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 7966); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 7967 | |
| 7968 | ParseNode* argNode = argsList->head(); |
| 7969 | |
| 7970 | if (!argNode->isKind(ParseNodeKind::StringExpr)) { |
| 7971 | reportError(callNode, JSMSG_UNEXPECTED_TYPE, "built-in name", |
| 7972 | "not a string constant"); |
| 7973 | return false; |
| 7974 | } |
| 7975 | |
| 7976 | auto name = argNode->as<NameNode>().atom(); |
| 7977 | |
| 7978 | BuiltinObjectKind kind; |
| 7979 | if (isConstructor) { |
| 7980 | kind = BuiltinConstructorForName(name); |
| 7981 | } else { |
| 7982 | kind = BuiltinPrototypeForName(name); |
| 7983 | } |
| 7984 | |
| 7985 | if (kind == BuiltinObjectKind::None) { |
| 7986 | reportError(callNode, JSMSG_UNEXPECTED_TYPE, "built-in name", |
| 7987 | "not a valid built-in"); |
| 7988 | return false; |
| 7989 | } |
| 7990 | |
| 7991 | return emitBuiltinObject(kind); |
| 7992 | } |
| 7993 | |
| 7994 | bool BytecodeEmitter::emitSelfHostedGetBuiltinConstructor(CallNode* callNode) { |
| 7995 | return emitSelfHostedGetBuiltinConstructorOrPrototype( |
| 7996 | callNode, /* isConstructor = */ true); |
| 7997 | } |
| 7998 | |
| 7999 | bool BytecodeEmitter::emitSelfHostedGetBuiltinPrototype(CallNode* callNode) { |
| 8000 | return emitSelfHostedGetBuiltinConstructorOrPrototype( |
| 8001 | callNode, /* isConstructor = */ false); |
| 8002 | } |
| 8003 | |
| 8004 | JS::SymbolCode ParserAtomToSymbolCode(TaggedParserAtomIndex atom) { |
| 8005 | // NOTE: This is a linear search, but the set of entries is quite small and |
| 8006 | // this is only used for initial self-hosted parse. |
| 8007 | #define MATCH_WELL_KNOWN_SYMBOL(NAME) \ |
| 8008 | if (atom == TaggedParserAtomIndex::WellKnown::NAME()) { \ |
| 8009 | return JS::SymbolCode::NAME; \ |
| 8010 | } |
| 8011 | JS_FOR_EACH_WELL_KNOWN_SYMBOL(MATCH_WELL_KNOWN_SYMBOL)MATCH_WELL_KNOWN_SYMBOL(isConcatSpreadable) MATCH_WELL_KNOWN_SYMBOL (iterator) MATCH_WELL_KNOWN_SYMBOL(match) MATCH_WELL_KNOWN_SYMBOL (replace) MATCH_WELL_KNOWN_SYMBOL(search) MATCH_WELL_KNOWN_SYMBOL (species) MATCH_WELL_KNOWN_SYMBOL(hasInstance) MATCH_WELL_KNOWN_SYMBOL (split) MATCH_WELL_KNOWN_SYMBOL(toPrimitive) MATCH_WELL_KNOWN_SYMBOL (toStringTag) MATCH_WELL_KNOWN_SYMBOL(unscopables) MATCH_WELL_KNOWN_SYMBOL (asyncIterator) MATCH_WELL_KNOWN_SYMBOL(matchAll) MATCH_WELL_KNOWN_SYMBOL (dispose) MATCH_WELL_KNOWN_SYMBOL(asyncDispose) |
| 8012 | #undef MATCH_WELL_KNOWN_SYMBOL |
| 8013 | |
| 8014 | return JS::SymbolCode::Limit; |
| 8015 | } |
| 8016 | |
| 8017 | bool BytecodeEmitter::emitSelfHostedGetBuiltinSymbol(CallNode* callNode) { |
| 8018 | ListNode* argsList = callNode->args(); |
| 8019 | |
| 8020 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8020); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 8020); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8021 | |
| 8022 | ParseNode* argNode = argsList->head(); |
| 8023 | |
| 8024 | if (!argNode->isKind(ParseNodeKind::StringExpr)) { |
| 8025 | reportError(callNode, JSMSG_UNEXPECTED_TYPE, "built-in name", |
| 8026 | "not a string constant"); |
| 8027 | return false; |
| 8028 | } |
| 8029 | |
| 8030 | auto name = argNode->as<NameNode>().atom(); |
| 8031 | |
| 8032 | JS::SymbolCode code = ParserAtomToSymbolCode(name); |
| 8033 | if (code == JS::SymbolCode::Limit) { |
| 8034 | reportError(callNode, JSMSG_UNEXPECTED_TYPE, "built-in name", |
| 8035 | "not a valid built-in"); |
| 8036 | return false; |
| 8037 | } |
| 8038 | |
| 8039 | return emit2(JSOp::Symbol, uint8_t(code)); |
| 8040 | } |
| 8041 | |
| 8042 | bool BytecodeEmitter::emitSelfHostedArgumentsLength(CallNode* callNode) { |
| 8043 | MOZ_ASSERT(!sc->asFunctionBox()->needsArgsObj())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!sc->asFunctionBox()->needsArgsObj())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!sc->asFunctionBox()->needsArgsObj()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!sc->asFunctionBox()->needsArgsObj()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8043); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!sc->asFunctionBox()->needsArgsObj()" ")"); do { MOZ_CrashSequence(__null, 8043); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8044 | sc->asFunctionBox()->setUsesArgumentsIntrinsics(); |
| 8045 | |
| 8046 | MOZ_ASSERT(callNode->args()->count() == 0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(callNode->args()->count() == 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(callNode->args()->count () == 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("callNode->args()->count() == 0", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8046); AnnotateMozCrashReason("MOZ_ASSERT" "(" "callNode->args()->count() == 0" ")"); do { MOZ_CrashSequence(__null, 8046); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8047 | |
| 8048 | return emit1(JSOp::ArgumentsLength); |
| 8049 | } |
| 8050 | |
| 8051 | bool BytecodeEmitter::emitSelfHostedGetArgument(CallNode* callNode) { |
| 8052 | MOZ_ASSERT(!sc->asFunctionBox()->needsArgsObj())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!sc->asFunctionBox()->needsArgsObj())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!sc->asFunctionBox()->needsArgsObj()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!sc->asFunctionBox()->needsArgsObj()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8052); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!sc->asFunctionBox()->needsArgsObj()" ")"); do { MOZ_CrashSequence(__null, 8052); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8053 | sc->asFunctionBox()->setUsesArgumentsIntrinsics(); |
| 8054 | |
| 8055 | ListNode* argsList = callNode->args(); |
| 8056 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8056); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 8056); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8057 | |
| 8058 | ParseNode* argNode = argsList->head(); |
| 8059 | if (!emitTree(argNode)) { |
| 8060 | return false; |
| 8061 | } |
| 8062 | |
| 8063 | return emit1(JSOp::GetActualArg); |
| 8064 | } |
| 8065 | |
| 8066 | #ifdef DEBUG1 |
| 8067 | void BytecodeEmitter::assertSelfHostedExpectedTopLevel(ParseNode* node) { |
| 8068 | // The function argument is expected to be a simple binding/function name. |
| 8069 | // Eg. `function foo() { }; SpecialIntrinsic(foo)` |
| 8070 | MOZ_ASSERT(node->isKind(ParseNodeKind::Name),do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::Name))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind ::Name)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("node->isKind(ParseNodeKind::Name)" " (" "argument must be a function name" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8071 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::Name)" ") (" "argument must be a function name" ")"); do { MOZ_CrashSequence (__null, 8071); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 8071 | "argument must be a function name")do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::Name))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind ::Name)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("node->isKind(ParseNodeKind::Name)" " (" "argument must be a function name" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8071 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::Name)" ") (" "argument must be a function name" ")"); do { MOZ_CrashSequence (__null, 8071); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8072 | TaggedParserAtomIndex targetName = node->as<NameNode>().name(); |
| 8073 | |
| 8074 | // The special intrinsics must follow the target functions definition. A |
| 8075 | // simple assert is fine here since any hoisted function will cause a non-null |
| 8076 | // value to be set here. |
| 8077 | MOZ_ASSERT(prevSelfHostedTopLevelFunction)do { static_assert( mozilla::detail::AssertionConditionType< decltype(prevSelfHostedTopLevelFunction)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(prevSelfHostedTopLevelFunction ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "prevSelfHostedTopLevelFunction", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8077); AnnotateMozCrashReason("MOZ_ASSERT" "(" "prevSelfHostedTopLevelFunction" ")"); do { MOZ_CrashSequence(__null, 8077); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8078 | |
| 8079 | // The target function must match the most recently defined top-level |
| 8080 | // self-hosted function. |
| 8081 | MOZ_ASSERT(prevSelfHostedTopLevelFunction->explicitName() == targetName,do { static_assert( mozilla::detail::AssertionConditionType< decltype(prevSelfHostedTopLevelFunction->explicitName() == targetName)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(prevSelfHostedTopLevelFunction-> explicitName() == targetName))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("prevSelfHostedTopLevelFunction->explicitName() == targetName" " (" "selfhost decorator must immediately follow target function" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8082 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "prevSelfHostedTopLevelFunction->explicitName() == targetName" ") (" "selfhost decorator must immediately follow target function" ")"); do { MOZ_CrashSequence(__null, 8082); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 8082 | "selfhost decorator must immediately follow target function")do { static_assert( mozilla::detail::AssertionConditionType< decltype(prevSelfHostedTopLevelFunction->explicitName() == targetName)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(prevSelfHostedTopLevelFunction-> explicitName() == targetName))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("prevSelfHostedTopLevelFunction->explicitName() == targetName" " (" "selfhost decorator must immediately follow target function" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8082 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "prevSelfHostedTopLevelFunction->explicitName() == targetName" ") (" "selfhost decorator must immediately follow target function" ")"); do { MOZ_CrashSequence(__null, 8082); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8083 | } |
| 8084 | #endif |
| 8085 | |
| 8086 | bool BytecodeEmitter::emitSelfHostedSetIsInlinableLargeFunction( |
| 8087 | CallNode* callNode) { |
| 8088 | #ifdef DEBUG1 |
| 8089 | ListNode* argsList = callNode->args(); |
| 8090 | |
| 8091 | MOZ_ASSERT(argsList->count() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 1))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8091); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 1" ")"); do { MOZ_CrashSequence(__null, 8091); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8092 | |
| 8093 | assertSelfHostedExpectedTopLevel(argsList->head()); |
| 8094 | #endif |
| 8095 | |
| 8096 | MOZ_ASSERT(prevSelfHostedTopLevelFunction->isInitialCompilation)do { static_assert( mozilla::detail::AssertionConditionType< decltype(prevSelfHostedTopLevelFunction->isInitialCompilation )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(prevSelfHostedTopLevelFunction->isInitialCompilation ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "prevSelfHostedTopLevelFunction->isInitialCompilation", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8096); AnnotateMozCrashReason("MOZ_ASSERT" "(" "prevSelfHostedTopLevelFunction->isInitialCompilation" ")"); do { MOZ_CrashSequence(__null, 8096); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8097 | prevSelfHostedTopLevelFunction->setIsInlinableLargeFunction(); |
| 8098 | |
| 8099 | // This is still a call node, so we must generate a stack value. |
| 8100 | return emit1(JSOp::Undefined); |
| 8101 | } |
| 8102 | |
| 8103 | bool BytecodeEmitter::emitSelfHostedSetCanonicalName(CallNode* callNode) { |
| 8104 | ListNode* argsList = callNode->args(); |
| 8105 | |
| 8106 | MOZ_ASSERT(argsList->count() == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 2))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8106); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 2" ")"); do { MOZ_CrashSequence(__null, 8106); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8107 | |
| 8108 | #ifdef DEBUG1 |
| 8109 | assertSelfHostedExpectedTopLevel(argsList->head()); |
| 8110 | #endif |
| 8111 | |
| 8112 | ParseNode* nameNode = argsList->last(); |
| 8113 | MOZ_ASSERT(nameNode->isKind(ParseNodeKind::StringExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(nameNode->isKind(ParseNodeKind::StringExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(nameNode->isKind(ParseNodeKind::StringExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("nameNode->isKind(ParseNodeKind::StringExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8113); AnnotateMozCrashReason("MOZ_ASSERT" "(" "nameNode->isKind(ParseNodeKind::StringExpr)" ")"); do { MOZ_CrashSequence(__null, 8113); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8114 | TaggedParserAtomIndex specName = nameNode->as<NameNode>().atom(); |
| 8115 | // Canonical name must be atomized. |
| 8116 | compilationState.parserAtoms.markUsedByStencil(specName, |
| 8117 | ParserAtom::Atomize::Yes); |
| 8118 | |
| 8119 | // Store the canonical name for instantiation. |
| 8120 | prevSelfHostedTopLevelFunction->functionStencil().setSelfHostedCanonicalName( |
| 8121 | specName); |
| 8122 | |
| 8123 | return emit1(JSOp::Undefined); |
| 8124 | } |
| 8125 | |
| 8126 | #ifdef DEBUG1 |
| 8127 | void BytecodeEmitter::assertSelfHostedUnsafeGetReservedSlot( |
| 8128 | ListNode* argsList) { |
| 8129 | MOZ_ASSERT(argsList->count() == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 2))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8129); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 2" ")"); do { MOZ_CrashSequence(__null, 8129); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8130 | |
| 8131 | ParseNode* objNode = argsList->head(); |
| 8132 | ParseNode* slotNode = objNode->pn_next; |
| 8133 | |
| 8134 | // Ensure that the slot argument is fixed, this is required by the JITs. |
| 8135 | MOZ_ASSERT(slotNode->isKind(ParseNodeKind::NumberExpr),do { static_assert( mozilla::detail::AssertionConditionType< decltype(slotNode->isKind(ParseNodeKind::NumberExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(slotNode->isKind(ParseNodeKind::NumberExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("slotNode->isKind(ParseNodeKind::NumberExpr)" " (" "slot argument must be a constant" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8136); AnnotateMozCrashReason("MOZ_ASSERT" "(" "slotNode->isKind(ParseNodeKind::NumberExpr)" ") (" "slot argument must be a constant" ")"); do { MOZ_CrashSequence (__null, 8136); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 8136 | "slot argument must be a constant")do { static_assert( mozilla::detail::AssertionConditionType< decltype(slotNode->isKind(ParseNodeKind::NumberExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(slotNode->isKind(ParseNodeKind::NumberExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("slotNode->isKind(ParseNodeKind::NumberExpr)" " (" "slot argument must be a constant" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8136); AnnotateMozCrashReason("MOZ_ASSERT" "(" "slotNode->isKind(ParseNodeKind::NumberExpr)" ") (" "slot argument must be a constant" ")"); do { MOZ_CrashSequence (__null, 8136); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8137 | } |
| 8138 | |
| 8139 | void BytecodeEmitter::assertSelfHostedUnsafeSetReservedSlot( |
| 8140 | ListNode* argsList) { |
| 8141 | MOZ_ASSERT(argsList->count() == 3)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 3)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 3))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 3" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8141); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 3" ")"); do { MOZ_CrashSequence(__null, 8141); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8142 | |
| 8143 | ParseNode* objNode = argsList->head(); |
| 8144 | ParseNode* slotNode = objNode->pn_next; |
| 8145 | |
| 8146 | // Ensure that the slot argument is fixed, this is required by the JITs. |
| 8147 | MOZ_ASSERT(slotNode->isKind(ParseNodeKind::NumberExpr),do { static_assert( mozilla::detail::AssertionConditionType< decltype(slotNode->isKind(ParseNodeKind::NumberExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(slotNode->isKind(ParseNodeKind::NumberExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("slotNode->isKind(ParseNodeKind::NumberExpr)" " (" "slot argument must be a constant" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8148); AnnotateMozCrashReason("MOZ_ASSERT" "(" "slotNode->isKind(ParseNodeKind::NumberExpr)" ") (" "slot argument must be a constant" ")"); do { MOZ_CrashSequence (__null, 8148); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 8148 | "slot argument must be a constant")do { static_assert( mozilla::detail::AssertionConditionType< decltype(slotNode->isKind(ParseNodeKind::NumberExpr))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(slotNode->isKind(ParseNodeKind::NumberExpr)))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("slotNode->isKind(ParseNodeKind::NumberExpr)" " (" "slot argument must be a constant" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8148); AnnotateMozCrashReason("MOZ_ASSERT" "(" "slotNode->isKind(ParseNodeKind::NumberExpr)" ") (" "slot argument must be a constant" ")"); do { MOZ_CrashSequence (__null, 8148); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 8149 | } |
| 8150 | #endif |
| 8151 | |
| 8152 | /* A version of emitCalleeAndThis for the optional cases: |
| 8153 | * * a?.() |
| 8154 | * * a?.b() |
| 8155 | * * a?.["b"]() |
| 8156 | * * (a?.b)() |
| 8157 | * * a?.#b() |
| 8158 | * |
| 8159 | * See emitCallOrNew and emitOptionalCall for more context. |
| 8160 | */ |
| 8161 | bool BytecodeEmitter::emitOptionalCalleeAndThis(ParseNode* callee, |
| 8162 | CallNode* call, |
| 8163 | CallOrNewEmitter& cone, |
| 8164 | OptionalEmitter& oe) { |
| 8165 | AutoCheckRecursionLimit recursion(fc); |
| 8166 | if (!recursion.check(fc)) { |
| 8167 | return false; |
| 8168 | } |
| 8169 | |
| 8170 | switch (ParseNodeKind kind = callee->getKind()) { |
| 8171 | case ParseNodeKind::Name: { |
| 8172 | auto name = callee->as<NameNode>().name(); |
| 8173 | if (!cone.emitNameCallee(name)) { |
| 8174 | // [stack] CALLEE THIS |
| 8175 | return false; |
| 8176 | } |
| 8177 | break; |
| 8178 | } |
| 8179 | |
| 8180 | case ParseNodeKind::OptionalDotExpr: { |
| 8181 | MOZ_ASSERT(emitterMode != BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode != BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode != BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode != BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8181); AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode != BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 8181); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8182 | OptionalPropertyAccess* prop = &callee->as<OptionalPropertyAccess>(); |
| 8183 | bool isSuper = false; |
| 8184 | |
| 8185 | PropOpEmitter& poe = cone.prepareForPropCallee(isSuper); |
| 8186 | if (!emitOptionalDotExpression(prop, poe, isSuper, oe)) { |
| 8187 | // [stack] CALLEE THIS |
| 8188 | return false; |
| 8189 | } |
| 8190 | break; |
| 8191 | } |
| 8192 | case ParseNodeKind::ArgumentsLength: { |
| 8193 | MOZ_ASSERT(emitterMode != BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode != BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode != BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode != BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8193); AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode != BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 8193); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8194 | if (!cone.prepareForOtherCallee()) { |
| 8195 | return false; |
| 8196 | } |
| 8197 | if (!emitArgumentsLength()) { |
| 8198 | // [stack] ARGUMENTS_LENGTH |
| 8199 | return false; |
| 8200 | } |
| 8201 | break; |
| 8202 | } |
| 8203 | case ParseNodeKind::DotExpr: { |
| 8204 | MOZ_ASSERT(emitterMode != BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode != BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode != BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode != BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8204); AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode != BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 8204); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8205 | PropertyAccess* prop = &callee->as<PropertyAccess>(); |
| 8206 | bool isSuper = prop->isSuper(); |
| 8207 | |
| 8208 | PropOpEmitter& poe = cone.prepareForPropCallee(isSuper); |
| 8209 | if (!emitOptionalDotExpression(prop, poe, isSuper, oe)) { |
| 8210 | // [stack] CALLEE THIS |
| 8211 | return false; |
| 8212 | } |
| 8213 | break; |
| 8214 | } |
| 8215 | |
| 8216 | case ParseNodeKind::OptionalElemExpr: { |
| 8217 | OptionalPropertyByValue* elem = &callee->as<OptionalPropertyByValue>(); |
| 8218 | bool isSuper = false; |
| 8219 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8219); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 8219); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8220 | ElemOpEmitter& eoe = cone.prepareForElemCallee(isSuper); |
| 8221 | if (!emitOptionalElemExpression(elem, eoe, isSuper, oe)) { |
| 8222 | // [stack] CALLEE THIS |
| 8223 | return false; |
| 8224 | } |
| 8225 | break; |
| 8226 | } |
| 8227 | case ParseNodeKind::ElemExpr: { |
| 8228 | PropertyByValue* elem = &callee->as<PropertyByValue>(); |
| 8229 | bool isSuper = elem->isSuper(); |
| 8230 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8230); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 8230); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8231 | ElemOpEmitter& eoe = cone.prepareForElemCallee(isSuper); |
| 8232 | if (!emitOptionalElemExpression(elem, eoe, isSuper, oe)) { |
| 8233 | // [stack] CALLEE THIS |
| 8234 | return false; |
| 8235 | } |
| 8236 | break; |
| 8237 | } |
| 8238 | |
| 8239 | case ParseNodeKind::PrivateMemberExpr: |
| 8240 | case ParseNodeKind::OptionalPrivateMemberExpr: { |
| 8241 | PrivateMemberAccessBase* privateExpr = |
| 8242 | &callee->as<PrivateMemberAccessBase>(); |
| 8243 | PrivateOpEmitter& xoe = |
| 8244 | cone.prepareForPrivateCallee(privateExpr->privateName().name()); |
| 8245 | if (!emitOptionalPrivateExpression(privateExpr, xoe, oe)) { |
| 8246 | // [stack] CALLEE THIS |
| 8247 | return false; |
| 8248 | } |
| 8249 | break; |
| 8250 | } |
| 8251 | |
| 8252 | case ParseNodeKind::Function: |
| 8253 | if (!cone.prepareForFunctionCallee()) { |
| 8254 | return false; |
| 8255 | } |
| 8256 | if (!emitOptionalTree(callee, oe)) { |
| 8257 | // [stack] CALLEE |
| 8258 | return false; |
| 8259 | } |
| 8260 | break; |
| 8261 | |
| 8262 | case ParseNodeKind::OptionalChain: { |
| 8263 | return emitCalleeAndThisForOptionalChain(&callee->as<UnaryNode>(), call, |
| 8264 | cone); |
| 8265 | } |
| 8266 | |
| 8267 | default: |
| 8268 | MOZ_RELEASE_ASSERT(kind != ParseNodeKind::SuperBase)do { static_assert( mozilla::detail::AssertionConditionType< decltype(kind != ParseNodeKind::SuperBase)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(kind != ParseNodeKind::SuperBase ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "kind != ParseNodeKind::SuperBase", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8268); AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "kind != ParseNodeKind::SuperBase" ")"); do { MOZ_CrashSequence(__null, 8268); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8269 | |
| 8270 | if (!cone.prepareForOtherCallee()) { |
| 8271 | return false; |
| 8272 | } |
| 8273 | if (!emitOptionalTree(callee, oe)) { |
| 8274 | // [stack] CALLEE |
| 8275 | return false; |
| 8276 | } |
| 8277 | break; |
| 8278 | } |
| 8279 | |
| 8280 | if (!cone.emitThis()) { |
| 8281 | // [stack] CALLEE THIS |
| 8282 | return false; |
| 8283 | } |
| 8284 | |
| 8285 | return true; |
| 8286 | } |
| 8287 | |
| 8288 | bool BytecodeEmitter::emitCalleeAndThis(ParseNode* callee, CallNode* maybeCall, |
| 8289 | CallOrNewEmitter& cone) { |
| 8290 | MOZ_ASSERT_IF(maybeCall, maybeCall->callee() == callee)do { if (maybeCall) { do { static_assert( mozilla::detail::AssertionConditionType <decltype(maybeCall->callee() == callee)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(maybeCall->callee() == callee ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "maybeCall->callee() == callee", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8290); AnnotateMozCrashReason("MOZ_ASSERT" "(" "maybeCall->callee() == callee" ")"); do { MOZ_CrashSequence(__null, 8290); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 8291 | |
| 8292 | switch (callee->getKind()) { |
| 8293 | case ParseNodeKind::Name: { |
| 8294 | auto name = callee->as<NameNode>().name(); |
| 8295 | if (!cone.emitNameCallee(name)) { |
| 8296 | // [stack] CALLEE THIS? |
| 8297 | return false; |
| 8298 | } |
| 8299 | break; |
| 8300 | } |
| 8301 | case ParseNodeKind::ArgumentsLength: { |
| 8302 | MOZ_ASSERT(emitterMode != BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode != BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode != BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode != BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8302); AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode != BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 8302); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8303 | if (!cone.prepareForOtherCallee()) { |
| 8304 | return false; |
| 8305 | } |
| 8306 | if (!emitArgumentsLength()) { |
| 8307 | // [stack] ARGUMENTS_LENGTH |
| 8308 | return false; |
| 8309 | } |
| 8310 | break; |
| 8311 | } |
| 8312 | case ParseNodeKind::DotExpr: { |
| 8313 | MOZ_ASSERT(emitterMode != BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode != BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode != BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode != BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8313); AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode != BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 8313); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8314 | PropertyAccess* prop = &callee->as<PropertyAccess>(); |
| 8315 | bool isSuper = prop->isSuper(); |
| 8316 | |
| 8317 | PropOpEmitter& poe = cone.prepareForPropCallee(isSuper); |
| 8318 | if (!poe.prepareForObj()) { |
| 8319 | return false; |
| 8320 | } |
| 8321 | if (isSuper) { |
| 8322 | UnaryNode* base = &prop->expression().as<UnaryNode>(); |
| 8323 | if (!emitGetThisForSuperBase(base)) { |
| 8324 | // [stack] THIS |
| 8325 | return false; |
| 8326 | } |
| 8327 | } else { |
| 8328 | if (!emitPropLHS(prop)) { |
| 8329 | // [stack] OBJ |
| 8330 | return false; |
| 8331 | } |
| 8332 | } |
| 8333 | if (!poe.emitGet(prop->key().atom())) { |
| 8334 | // [stack] CALLEE THIS? |
| 8335 | return false; |
| 8336 | } |
| 8337 | |
| 8338 | break; |
| 8339 | } |
| 8340 | case ParseNodeKind::ElemExpr: { |
| 8341 | MOZ_ASSERT(emitterMode != BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode != BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode != BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode != BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8341); AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode != BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 8341); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8342 | PropertyByValue* elem = &callee->as<PropertyByValue>(); |
| 8343 | bool isSuper = elem->isSuper(); |
| 8344 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8344); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 8344); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8345 | ElemOpEmitter& eoe = cone.prepareForElemCallee(isSuper); |
| 8346 | if (!emitElemObjAndKey(elem, eoe)) { |
| 8347 | // [stack] # if Super |
| 8348 | // [stack] THIS? THIS KEY |
| 8349 | // [stack] # otherwise |
| 8350 | // [stack] OBJ? OBJ KEY |
| 8351 | return false; |
| 8352 | } |
| 8353 | if (!eoe.emitGet()) { |
| 8354 | // [stack] CALLEE THIS? |
| 8355 | return false; |
| 8356 | } |
| 8357 | |
| 8358 | break; |
| 8359 | } |
| 8360 | case ParseNodeKind::PrivateMemberExpr: { |
| 8361 | MOZ_ASSERT(emitterMode != BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode != BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode != BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode != BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8361); AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode != BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 8361); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8362 | PrivateMemberAccessBase* privateExpr = |
| 8363 | &callee->as<PrivateMemberAccessBase>(); |
| 8364 | PrivateOpEmitter& xoe = |
| 8365 | cone.prepareForPrivateCallee(privateExpr->privateName().name()); |
| 8366 | if (!emitTree(&privateExpr->expression())) { |
| 8367 | // [stack] OBJ |
| 8368 | return false; |
| 8369 | } |
| 8370 | if (!xoe.emitReference()) { |
| 8371 | // [stack] OBJ NAME |
| 8372 | return false; |
| 8373 | } |
| 8374 | if (!xoe.emitGetForCallOrNew()) { |
| 8375 | // [stack] CALLEE THIS |
| 8376 | return false; |
| 8377 | } |
| 8378 | |
| 8379 | break; |
| 8380 | } |
| 8381 | case ParseNodeKind::Function: |
| 8382 | if (!cone.prepareForFunctionCallee()) { |
| 8383 | return false; |
| 8384 | } |
| 8385 | if (!emitTree(callee)) { |
| 8386 | // [stack] CALLEE |
| 8387 | return false; |
| 8388 | } |
| 8389 | break; |
| 8390 | case ParseNodeKind::SuperBase: |
| 8391 | MOZ_ASSERT(maybeCall)do { static_assert( mozilla::detail::AssertionConditionType< decltype(maybeCall)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(maybeCall))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("maybeCall", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8391); AnnotateMozCrashReason("MOZ_ASSERT" "(" "maybeCall" ")" ); do { MOZ_CrashSequence(__null, 8391); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8392 | MOZ_ASSERT(maybeCall->isKind(ParseNodeKind::SuperCallExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(maybeCall->isKind(ParseNodeKind::SuperCallExpr))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(maybeCall->isKind(ParseNodeKind::SuperCallExpr))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("maybeCall->isKind(ParseNodeKind::SuperCallExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8392); AnnotateMozCrashReason("MOZ_ASSERT" "(" "maybeCall->isKind(ParseNodeKind::SuperCallExpr)" ")"); do { MOZ_CrashSequence(__null, 8392); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8393 | MOZ_ASSERT(callee->isKind(ParseNodeKind::SuperBase))do { static_assert( mozilla::detail::AssertionConditionType< decltype(callee->isKind(ParseNodeKind::SuperBase))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(callee->isKind(ParseNodeKind::SuperBase)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("callee->isKind(ParseNodeKind::SuperBase)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8393); AnnotateMozCrashReason("MOZ_ASSERT" "(" "callee->isKind(ParseNodeKind::SuperBase)" ")"); do { MOZ_CrashSequence(__null, 8393); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8394 | if (!cone.emitSuperCallee()) { |
| 8395 | // [stack] CALLEE IsConstructing |
| 8396 | return false; |
| 8397 | } |
| 8398 | break; |
| 8399 | case ParseNodeKind::OptionalChain: { |
| 8400 | MOZ_ASSERT(maybeCall)do { static_assert( mozilla::detail::AssertionConditionType< decltype(maybeCall)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(maybeCall))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("maybeCall", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8400); AnnotateMozCrashReason("MOZ_ASSERT" "(" "maybeCall" ")" ); do { MOZ_CrashSequence(__null, 8400); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8401 | return emitCalleeAndThisForOptionalChain(&callee->as<UnaryNode>(), |
| 8402 | maybeCall, cone); |
| 8403 | } |
| 8404 | default: |
| 8405 | if (!cone.prepareForOtherCallee()) { |
| 8406 | return false; |
| 8407 | } |
| 8408 | if (!emitTree(callee)) { |
| 8409 | return false; |
| 8410 | } |
| 8411 | break; |
| 8412 | } |
| 8413 | |
| 8414 | if (!cone.emitThis()) { |
| 8415 | // [stack] CALLEE THIS |
| 8416 | return false; |
| 8417 | } |
| 8418 | |
| 8419 | return true; |
| 8420 | } |
| 8421 | |
| 8422 | ParseNode* BytecodeEmitter::getCoordNode(ParseNode* callNode, |
| 8423 | ParseNode* calleeNode, JSOp op, |
| 8424 | ListNode* argsList) const { |
| 8425 | ParseNode* coordNode = callNode; |
| 8426 | if (op == JSOp::Call || op == JSOp::SpreadCall) { |
| 8427 | // Default to using the location of the `(` itself. |
| 8428 | // obj[expr]() // expression |
| 8429 | // ^ // column coord |
| 8430 | coordNode = argsList; |
| 8431 | |
| 8432 | switch (calleeNode->getKind()) { |
| 8433 | case ParseNodeKind::ArgumentsLength: |
| 8434 | case ParseNodeKind::DotExpr: |
| 8435 | // Use the position of a property access identifier. |
| 8436 | // |
| 8437 | // obj().aprop() // expression |
| 8438 | // ^ // column coord |
| 8439 | // |
| 8440 | // Note: Because of the constant folding logic in FoldElement, |
| 8441 | // this case also applies for constant string properties. |
| 8442 | // |
| 8443 | // obj()['aprop']() // expression |
| 8444 | // ^ // column coord |
| 8445 | coordNode = &calleeNode->as<NonOptionalPropertyAccessBase>().key(); |
| 8446 | break; |
| 8447 | case ParseNodeKind::Name: { |
| 8448 | // Use the start of callee name unless it is at a separator |
| 8449 | // or has no args. |
| 8450 | // |
| 8451 | // 2 + obj() // expression |
| 8452 | // ^ // column coord |
| 8453 | // |
| 8454 | if (argsList->empty() || |
| 8455 | !bytecodeSection().atSeparator(calleeNode->pn_pos.begin)) { |
| 8456 | // Use the start of callee names. |
| 8457 | coordNode = calleeNode; |
| 8458 | } |
| 8459 | break; |
| 8460 | } |
| 8461 | |
| 8462 | default: |
| 8463 | break; |
| 8464 | } |
| 8465 | } |
| 8466 | return coordNode; |
| 8467 | } |
| 8468 | |
| 8469 | bool BytecodeEmitter::emitArguments(ListNode* argsList, bool isCall, |
| 8470 | bool isSpread, CallOrNewEmitter& cone) { |
| 8471 | uint32_t argc = argsList->count(); |
| 8472 | if (argc >= ARGC_LIMIT) { |
| 8473 | reportError(argsList, |
| 8474 | isCall ? JSMSG_TOO_MANY_FUN_ARGS : JSMSG_TOO_MANY_CON_ARGS); |
| 8475 | return false; |
| 8476 | } |
| 8477 | if (!isSpread) { |
| 8478 | if (!cone.prepareForNonSpreadArguments()) { |
| 8479 | // [stack] CALLEE THIS |
| 8480 | return false; |
| 8481 | } |
| 8482 | for (ParseNode* arg : argsList->contents()) { |
| 8483 | if (!updateSourceCoordNotesIfNonLiteral(arg)) { |
| 8484 | return false; |
| 8485 | } |
| 8486 | if (!emitTree(arg)) { |
| 8487 | // [stack] CALLEE THIS ARG* |
| 8488 | return false; |
| 8489 | } |
| 8490 | } |
| 8491 | } else if (cone.wantSpreadOperand()) { |
| 8492 | auto* spreadNode = &argsList->head()->as<UnaryNode>(); |
| 8493 | if (!updateSourceCoordNotesIfNonLiteral(spreadNode->kid())) { |
| 8494 | return false; |
| 8495 | } |
| 8496 | if (!emitTree(spreadNode->kid())) { |
| 8497 | // [stack] CALLEE THIS ARG0 |
| 8498 | return false; |
| 8499 | } |
| 8500 | |
| 8501 | if (!cone.emitSpreadArgumentsTest()) { |
| 8502 | // [stack] CALLEE THIS ARG0 |
| 8503 | return false; |
| 8504 | } |
| 8505 | |
| 8506 | if (cone.wantSpreadIteration()) { |
| 8507 | if (!emitSpreadIntoArray(spreadNode)) { |
| 8508 | // [stack] CALLEE THIS ARR |
| 8509 | return false; |
| 8510 | } |
| 8511 | } |
| 8512 | |
| 8513 | if (!cone.emitSpreadArgumentsTestEnd()) { |
| 8514 | // [stack] CALLEE THIS ARR |
| 8515 | return false; |
| 8516 | } |
| 8517 | } else { |
| 8518 | if (!cone.prepareForSpreadArguments()) { |
| 8519 | // [stack] CALLEE THIS |
| 8520 | return false; |
| 8521 | } |
| 8522 | if (!emitArray(argsList)) { |
| 8523 | // [stack] CALLEE THIS ARR |
| 8524 | return false; |
| 8525 | } |
| 8526 | } |
| 8527 | |
| 8528 | return true; |
| 8529 | } |
| 8530 | |
| 8531 | bool BytecodeEmitter::emitOptionalCall(CallNode* callNode, OptionalEmitter& oe, |
| 8532 | ValueUsage valueUsage) { |
| 8533 | /* |
| 8534 | * A modified version of emitCallOrNew that handles optional calls. |
| 8535 | * |
| 8536 | * These include the following: |
| 8537 | * a?.() |
| 8538 | * a.b?.() |
| 8539 | * a.["b"]?.() |
| 8540 | * (a?.b)?.() |
| 8541 | * |
| 8542 | * See CallOrNewEmitter for more context. |
| 8543 | */ |
| 8544 | ParseNode* calleeNode = callNode->callee(); |
| 8545 | ListNode* argsList = callNode->args(); |
| 8546 | bool isSpread = IsSpreadOp(callNode->callOp()); |
| 8547 | JSOp op = callNode->callOp(); |
| 8548 | uint32_t argc = argsList->count(); |
| 8549 | bool isOptimizableSpread = isSpread && argc == 1; |
| 8550 | |
| 8551 | CallOrNewEmitter cone(this, op, |
| 8552 | isOptimizableSpread |
| 8553 | ? CallOrNewEmitter::ArgumentsKind::SingleSpread |
| 8554 | : CallOrNewEmitter::ArgumentsKind::Other, |
| 8555 | valueUsage); |
| 8556 | |
| 8557 | ParseNode* coordNode = getCoordNode(callNode, calleeNode, op, argsList); |
| 8558 | |
| 8559 | if (!emitOptionalCalleeAndThis(calleeNode, callNode, cone, oe)) { |
| 8560 | // [stack] CALLEE THIS |
| 8561 | return false; |
| 8562 | } |
| 8563 | |
| 8564 | if (callNode->isKind(ParseNodeKind::OptionalCallExpr)) { |
| 8565 | if (!oe.emitJumpShortCircuitForCall()) { |
| 8566 | // [stack] CALLEE THIS |
| 8567 | return false; |
| 8568 | } |
| 8569 | } |
| 8570 | |
| 8571 | if (!emitArguments(argsList, /* isCall = */ true, isSpread, cone)) { |
| 8572 | // [stack] CALLEE THIS ARGS... |
| 8573 | return false; |
| 8574 | } |
| 8575 | |
| 8576 | if (!cone.emitEnd(argc, coordNode->pn_pos.begin)) { |
| 8577 | // [stack] RVAL |
| 8578 | return false; |
| 8579 | } |
| 8580 | |
| 8581 | return true; |
| 8582 | } |
| 8583 | |
| 8584 | bool BytecodeEmitter::emitSelfHostedDisposeResources(CallNode* callNode, |
| 8585 | DisposalKind kind) { |
| 8586 | ListNode* argsList = callNode->args(); |
| 8587 | MOZ_ASSERT(argsList->count() == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(argsList->count() == 2)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(argsList->count() == 2))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("argsList->count() == 2" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8587); AnnotateMozCrashReason("MOZ_ASSERT" "(" "argsList->count() == 2" ")"); do { MOZ_CrashSequence(__null, 8587); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8588 | |
| 8589 | ParseNode* resourcesNode = argsList->head(); |
| 8590 | ParseNode* countNode = resourcesNode->pn_next; |
| 8591 | |
| 8592 | DisposalEmitter de(this, bool(kind)); |
| 8593 | |
| 8594 | if (!emit1(JSOp::False)) { |
| 8595 | // [stack] THROWING |
| 8596 | return false; |
| 8597 | } |
| 8598 | |
| 8599 | if (!emit1(JSOp::Undefined)) { |
| 8600 | // [stack] THROWING UNDEF |
| 8601 | return false; |
| 8602 | } |
| 8603 | |
| 8604 | if (!de.prepareForDisposeCapability()) { |
| 8605 | // [stack] RVAL? NEEDS-AWAIT? HAS-AWAITED? THROWING UNDEF |
| 8606 | return false; |
| 8607 | } |
| 8608 | |
| 8609 | if (!emitTree(resourcesNode)) { |
| 8610 | // [stack] RVAL? NEEDS-AWAIT? HAS-AWAITED? THROWING UNDEF RESOURCES |
| 8611 | return false; |
| 8612 | } |
| 8613 | |
| 8614 | if (!emitTree(countNode)) { |
| 8615 | // [stack] RVAL? NEEDS-AWAIT? HAS-AWAITED? THROWING UNDEF RESOURCES COUNT |
| 8616 | return false; |
| 8617 | } |
| 8618 | |
| 8619 | if (!de.emitEnd(*innermostEmitterScope())) { |
| 8620 | // [stack] EXC THROWING |
| 8621 | return false; |
| 8622 | } |
| 8623 | |
| 8624 | // [stack] EXC THROWING |
| 8625 | |
| 8626 | InternalIfEmitter ifThrow(this); |
| 8627 | |
| 8628 | if (!ifThrow.emitThenElse()) { |
| 8629 | // [stack] EXC |
| 8630 | return false; |
| 8631 | } |
| 8632 | |
| 8633 | if (!emit1(JSOp::Throw)) { |
| 8634 | // [stack] |
| 8635 | return false; |
| 8636 | } |
| 8637 | |
| 8638 | if (!ifThrow.emitElse()) { |
| 8639 | // [stack] EXC |
| 8640 | return false; |
| 8641 | } |
| 8642 | |
| 8643 | if (!emit1(JSOp::Pop)) { |
| 8644 | // [stack] |
| 8645 | return false; |
| 8646 | } |
| 8647 | |
| 8648 | if (!ifThrow.emitEnd()) { |
| 8649 | // [stack] |
| 8650 | return false; |
| 8651 | } |
| 8652 | |
| 8653 | if (!emit1(JSOp::Undefined)) { |
| 8654 | // [stack] RVAL |
| 8655 | return false; |
| 8656 | } |
| 8657 | |
| 8658 | return true; |
| 8659 | } |
| 8660 | |
| 8661 | bool BytecodeEmitter::emitCallOrNew(CallNode* callNode, ValueUsage valueUsage) { |
| 8662 | /* |
| 8663 | * Emit callable invocation or operator new (constructor call) code. |
| 8664 | * First, emit code for the left operand to evaluate the callable or |
| 8665 | * constructable object expression. |
| 8666 | * |
| 8667 | * Then (or in a call case that has no explicit reference-base |
| 8668 | * object) we emit JSOp::Undefined to produce the undefined |this| |
| 8669 | * value required for calls (which non-strict mode functions |
| 8670 | * will box into the global object). |
| 8671 | */ |
| 8672 | bool isCall = callNode->isKind(ParseNodeKind::CallExpr) || |
| 8673 | callNode->isKind(ParseNodeKind::TaggedTemplateExpr); |
| 8674 | ParseNode* calleeNode = callNode->callee(); |
| 8675 | ListNode* argsList = callNode->args(); |
| 8676 | JSOp op = callNode->callOp(); |
| 8677 | |
| 8678 | if (calleeNode->isKind(ParseNodeKind::Name) && |
| 8679 | emitterMode == BytecodeEmitter::SelfHosting && op == JSOp::Call) { |
| 8680 | // Calls to "callFunction", "callContentFunction", or "resumeGenerator" in |
| 8681 | // self-hosted code generate inline bytecode. |
| 8682 | // |
| 8683 | // NOTE: The list of special instruction names has to be kept in sync with |
| 8684 | // "js/src/builtin/.eslintrc.js". |
| 8685 | auto calleeName = calleeNode->as<NameNode>().name(); |
| 8686 | if (calleeName == TaggedParserAtomIndex::WellKnown::callFunction()) { |
| 8687 | return emitSelfHostedCallFunction(callNode, JSOp::Call); |
| 8688 | } |
| 8689 | if (calleeName == TaggedParserAtomIndex::WellKnown::callContentFunction()) { |
| 8690 | return emitSelfHostedCallFunction(callNode, JSOp::CallContent); |
| 8691 | } |
| 8692 | if (calleeName == |
| 8693 | TaggedParserAtomIndex::WellKnown::constructContentFunction()) { |
| 8694 | return emitSelfHostedCallFunction(callNode, JSOp::NewContent); |
| 8695 | } |
| 8696 | if (calleeName == TaggedParserAtomIndex::WellKnown::resumeGenerator()) { |
| 8697 | return emitSelfHostedResumeGenerator(callNode); |
| 8698 | } |
| 8699 | if (calleeName == TaggedParserAtomIndex::WellKnown::allowContentIter()) { |
| 8700 | return emitSelfHostedAllowContentIter(callNode); |
| 8701 | } |
| 8702 | if (calleeName == |
| 8703 | TaggedParserAtomIndex::WellKnown::allowContentIterWith()) { |
| 8704 | return emitSelfHostedAllowContentIterWith(callNode); |
| 8705 | } |
| 8706 | if (calleeName == |
| 8707 | TaggedParserAtomIndex::WellKnown::allowContentIterWithNext()) { |
| 8708 | return emitSelfHostedAllowContentIterWithNext(callNode); |
| 8709 | } |
| 8710 | if (calleeName == TaggedParserAtomIndex::WellKnown::DefineDataProperty() && |
| 8711 | argsList->count() == 3) { |
| 8712 | return emitSelfHostedDefineDataProperty(callNode); |
| 8713 | } |
| 8714 | if (calleeName == TaggedParserAtomIndex::WellKnown::hasOwn()) { |
| 8715 | return emitSelfHostedHasOwn(callNode); |
| 8716 | } |
| 8717 | if (calleeName == TaggedParserAtomIndex::WellKnown::getPropertySuper()) { |
| 8718 | return emitSelfHostedGetPropertySuper(callNode); |
| 8719 | } |
| 8720 | if (calleeName == TaggedParserAtomIndex::WellKnown::ToNumeric()) { |
| 8721 | return emitSelfHostedToNumeric(callNode); |
| 8722 | } |
| 8723 | if (calleeName == TaggedParserAtomIndex::WellKnown::ToString()) { |
| 8724 | return emitSelfHostedToString(callNode); |
| 8725 | } |
| 8726 | if (calleeName == |
| 8727 | TaggedParserAtomIndex::WellKnown::GetBuiltinConstructor()) { |
| 8728 | return emitSelfHostedGetBuiltinConstructor(callNode); |
| 8729 | } |
| 8730 | if (calleeName == TaggedParserAtomIndex::WellKnown::GetBuiltinPrototype()) { |
| 8731 | return emitSelfHostedGetBuiltinPrototype(callNode); |
| 8732 | } |
| 8733 | if (calleeName == TaggedParserAtomIndex::WellKnown::GetBuiltinSymbol()) { |
| 8734 | return emitSelfHostedGetBuiltinSymbol(callNode); |
| 8735 | } |
| 8736 | if (calleeName == TaggedParserAtomIndex::WellKnown::ArgumentsLength()) { |
| 8737 | return emitSelfHostedArgumentsLength(callNode); |
| 8738 | } |
| 8739 | if (calleeName == TaggedParserAtomIndex::WellKnown::GetArgument()) { |
| 8740 | return emitSelfHostedGetArgument(callNode); |
| 8741 | } |
| 8742 | if (calleeName == |
| 8743 | TaggedParserAtomIndex::WellKnown::SetIsInlinableLargeFunction()) { |
| 8744 | return emitSelfHostedSetIsInlinableLargeFunction(callNode); |
| 8745 | } |
| 8746 | if (calleeName == TaggedParserAtomIndex::WellKnown::SetCanonicalName()) { |
| 8747 | return emitSelfHostedSetCanonicalName(callNode); |
| 8748 | } |
| 8749 | if (calleeName == TaggedParserAtomIndex::WellKnown::IsNullOrUndefined()) { |
| 8750 | return emitSelfHostedIsNullOrUndefined(callNode); |
| 8751 | } |
| 8752 | if (calleeName == TaggedParserAtomIndex::WellKnown::IteratorClose()) { |
| 8753 | return emitSelfHostedIteratorClose(callNode); |
| 8754 | } |
| 8755 | if (calleeName == |
| 8756 | TaggedParserAtomIndex::WellKnown::DisposeResourcesAsync()) { |
| 8757 | return emitSelfHostedDisposeResources(callNode, DisposalKind::Async); |
| 8758 | } |
| 8759 | if (calleeName == |
| 8760 | TaggedParserAtomIndex::WellKnown::DisposeResourcesSync()) { |
| 8761 | return emitSelfHostedDisposeResources(callNode, DisposalKind::Sync); |
| 8762 | } |
| 8763 | #ifdef DEBUG1 |
| 8764 | if (calleeName == |
| 8765 | TaggedParserAtomIndex::WellKnown::UnsafeGetReservedSlot() || |
| 8766 | calleeName == TaggedParserAtomIndex::WellKnown:: |
| 8767 | UnsafeGetObjectFromReservedSlot() || |
| 8768 | calleeName == TaggedParserAtomIndex::WellKnown:: |
| 8769 | UnsafeGetInt32FromReservedSlot() || |
| 8770 | calleeName == TaggedParserAtomIndex::WellKnown:: |
| 8771 | UnsafeGetStringFromReservedSlot()) { |
| 8772 | // Make sure that this call is correct, but don't emit any special code. |
| 8773 | assertSelfHostedUnsafeGetReservedSlot(argsList); |
| 8774 | } |
| 8775 | if (calleeName == |
| 8776 | TaggedParserAtomIndex::WellKnown::UnsafeSetReservedSlot()) { |
| 8777 | // Make sure that this call is correct, but don't emit any special code. |
| 8778 | assertSelfHostedUnsafeSetReservedSlot(argsList); |
| 8779 | } |
| 8780 | #endif |
| 8781 | // Fall through |
| 8782 | } |
| 8783 | |
| 8784 | uint32_t argc = argsList->count(); |
| 8785 | bool isSpread = IsSpreadOp(op); |
| 8786 | bool isOptimizableSpread = isSpread && argc == 1; |
| 8787 | bool isDefaultDerivedClassConstructor = |
| 8788 | sc->isFunctionBox() && sc->asFunctionBox()->isDerivedClassConstructor() && |
| 8789 | sc->asFunctionBox()->isSyntheticFunction(); |
| 8790 | MOZ_ASSERT_IF(isDefaultDerivedClassConstructor, isOptimizableSpread)do { if (isDefaultDerivedClassConstructor) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(isOptimizableSpread )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(isOptimizableSpread))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("isOptimizableSpread", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8790); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isOptimizableSpread" ")"); do { MOZ_CrashSequence(__null, 8790); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); } } while ( false); |
| 8791 | CallOrNewEmitter cone( |
| 8792 | this, op, |
| 8793 | isOptimizableSpread |
| 8794 | ? isDefaultDerivedClassConstructor |
| 8795 | ? CallOrNewEmitter::ArgumentsKind::PassthroughRest |
| 8796 | : CallOrNewEmitter::ArgumentsKind::SingleSpread |
| 8797 | : CallOrNewEmitter::ArgumentsKind::Other, |
| 8798 | valueUsage); |
| 8799 | |
| 8800 | if (!emitCalleeAndThis(calleeNode, callNode, cone)) { |
| 8801 | // [stack] CALLEE THIS |
| 8802 | return false; |
| 8803 | } |
| 8804 | if (!emitArguments(argsList, isCall, isSpread, cone)) { |
| 8805 | // [stack] CALLEE THIS ARGS... |
| 8806 | return false; |
| 8807 | } |
| 8808 | |
| 8809 | // Push new.target for construct calls. |
| 8810 | if (IsConstructOp(op)) { |
| 8811 | if (op == JSOp::SuperCall || op == JSOp::SpreadSuperCall) { |
| 8812 | if (!emitNewTarget(callNode)) { |
| 8813 | // [stack] CALLEE THIS ARGS.. NEW.TARGET |
| 8814 | return false; |
| 8815 | } |
| 8816 | } else { |
| 8817 | // Repush the callee as new.target |
| 8818 | uint32_t effectiveArgc = isSpread ? 1 : argc; |
| 8819 | if (!emitDupAt(effectiveArgc + 1)) { |
| 8820 | // [stack] CALLEE THIS ARGS.. CALLEE |
| 8821 | return false; |
| 8822 | } |
| 8823 | } |
| 8824 | } |
| 8825 | |
| 8826 | ParseNode* coordNode = getCoordNode(callNode, calleeNode, op, argsList); |
| 8827 | |
| 8828 | if (!cone.emitEnd(argc, coordNode->pn_pos.begin)) { |
| 8829 | // [stack] RVAL |
| 8830 | return false; |
| 8831 | } |
| 8832 | |
| 8833 | return true; |
| 8834 | } |
| 8835 | |
| 8836 | // This list must be kept in the same order in several places: |
| 8837 | // - The binary operators in ParseNode.h , |
| 8838 | // - the binary operators in TokenKind.h |
| 8839 | // - the precedence list in Parser.cpp |
| 8840 | static const JSOp ParseNodeKindToJSOp[] = { |
| 8841 | // Some binary ops require special code generation (PrivateIn); |
| 8842 | // these should not use BinaryOpParseNodeKindToJSOp. This table fills those |
| 8843 | // slots with Nops to make the rest of the table lookup work. |
| 8844 | JSOp::Coalesce, JSOp::Or, JSOp::And, JSOp::BitOr, JSOp::BitXor, |
| 8845 | JSOp::BitAnd, JSOp::StrictEq, JSOp::Eq, JSOp::StrictNe, JSOp::Ne, |
| 8846 | JSOp::Lt, JSOp::Le, JSOp::Gt, JSOp::Ge, JSOp::Instanceof, |
| 8847 | JSOp::In, JSOp::Nop, JSOp::Lsh, JSOp::Rsh, JSOp::Ursh, |
| 8848 | JSOp::Add, JSOp::Sub, JSOp::Mul, JSOp::Div, JSOp::Mod, |
| 8849 | JSOp::Pow}; |
| 8850 | |
| 8851 | static inline JSOp BinaryOpParseNodeKindToJSOp(ParseNodeKind pnk) { |
| 8852 | MOZ_ASSERT(pnk >= ParseNodeKind::BinOpFirst)do { static_assert( mozilla::detail::AssertionConditionType< decltype(pnk >= ParseNodeKind::BinOpFirst)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pnk >= ParseNodeKind::BinOpFirst ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pnk >= ParseNodeKind::BinOpFirst", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8852); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pnk >= ParseNodeKind::BinOpFirst" ")"); do { MOZ_CrashSequence(__null, 8852); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8853 | MOZ_ASSERT(pnk <= ParseNodeKind::BinOpLast)do { static_assert( mozilla::detail::AssertionConditionType< decltype(pnk <= ParseNodeKind::BinOpLast)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(pnk <= ParseNodeKind::BinOpLast ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "pnk <= ParseNodeKind::BinOpLast", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 8853); AnnotateMozCrashReason("MOZ_ASSERT" "(" "pnk <= ParseNodeKind::BinOpLast" ")"); do { MOZ_CrashSequence(__null, 8853); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8854 | int parseNodeFirst = size_t(ParseNodeKind::BinOpFirst); |
| 8855 | #ifdef DEBUG1 |
| 8856 | int jsopArraySize = std::size(ParseNodeKindToJSOp); |
| 8857 | int parseNodeKindListSize = |
| 8858 | size_t(ParseNodeKind::BinOpLast) - parseNodeFirst + 1; |
| 8859 | MOZ_ASSERT(jsopArraySize == parseNodeKindListSize)do { static_assert( mozilla::detail::AssertionConditionType< decltype(jsopArraySize == parseNodeKindListSize)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(jsopArraySize == parseNodeKindListSize))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("jsopArraySize == parseNodeKindListSize" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8859); AnnotateMozCrashReason("MOZ_ASSERT" "(" "jsopArraySize == parseNodeKindListSize" ")"); do { MOZ_CrashSequence(__null, 8859); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8860 | // Ensure we don't use this to find an op for a parse node |
| 8861 | // requiring special emission rules. |
| 8862 | MOZ_ASSERT(ParseNodeKindToJSOp[size_t(pnk) - parseNodeFirst] != JSOp::Nop)do { static_assert( mozilla::detail::AssertionConditionType< decltype(ParseNodeKindToJSOp[size_t(pnk) - parseNodeFirst] != JSOp::Nop)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(ParseNodeKindToJSOp[size_t(pnk) - parseNodeFirst ] != JSOp::Nop))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("ParseNodeKindToJSOp[size_t(pnk) - parseNodeFirst] != JSOp::Nop" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8862); AnnotateMozCrashReason("MOZ_ASSERT" "(" "ParseNodeKindToJSOp[size_t(pnk) - parseNodeFirst] != JSOp::Nop" ")"); do { MOZ_CrashSequence(__null, 8862); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8863 | #endif |
| 8864 | return ParseNodeKindToJSOp[size_t(pnk) - parseNodeFirst]; |
| 8865 | } |
| 8866 | |
| 8867 | bool BytecodeEmitter::emitRightAssociative(ListNode* node) { |
| 8868 | // ** is the only right-associative operator. |
| 8869 | MOZ_ASSERT(node->isKind(ParseNodeKind::PowExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::PowExpr))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(node->isKind(ParseNodeKind::PowExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::PowExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8869); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::PowExpr)" ")"); do { MOZ_CrashSequence(__null, 8869); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8870 | |
| 8871 | // Right-associative operator chain. |
| 8872 | for (ParseNode* subexpr : node->contents()) { |
| 8873 | if (!updateSourceCoordNotesIfNonLiteral(subexpr)) { |
| 8874 | return false; |
| 8875 | } |
| 8876 | if (!emitTree(subexpr)) { |
| 8877 | return false; |
| 8878 | } |
| 8879 | } |
| 8880 | for (uint32_t i = 0; i < node->count() - 1; i++) { |
| 8881 | if (!emit1(JSOp::Pow)) { |
| 8882 | return false; |
| 8883 | } |
| 8884 | } |
| 8885 | return true; |
| 8886 | } |
| 8887 | |
| 8888 | Maybe<ConstantCompareOperand> |
| 8889 | BytecodeEmitter::parseNodeToConstantCompareOperand(ParseNode* constant) { |
| 8890 | switch (constant->getKind()) { |
| 8891 | case ParseNodeKind::NumberExpr: { |
| 8892 | double d = constant->as<NumericLiteral>().value(); |
| 8893 | int32_t ival; |
| 8894 | if (NumberEqualsInt32(d, &ival)) { |
| 8895 | if (ConstantCompareOperand::CanEncodeInt32ValueAsOperand(ival)) { |
| 8896 | return Some(ConstantCompareOperand(int8_t(ival))); |
| 8897 | } |
| 8898 | } |
| 8899 | return Nothing(); |
| 8900 | } |
| 8901 | case ParseNodeKind::TrueExpr: |
| 8902 | case ParseNodeKind::FalseExpr: |
| 8903 | return Some( |
| 8904 | ConstantCompareOperand(constant->isKind(ParseNodeKind::TrueExpr))); |
| 8905 | case ParseNodeKind::NullExpr: |
| 8906 | return Some( |
| 8907 | ConstantCompareOperand(ConstantCompareOperand::EncodedType::Null)); |
| 8908 | case ParseNodeKind::RawUndefinedExpr: |
| 8909 | return Some(ConstantCompareOperand( |
| 8910 | ConstantCompareOperand::EncodedType::Undefined)); |
| 8911 | case ParseNodeKind::Name: { |
| 8912 | MOZ_ASSERT(constant->as<NameNode>().name() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(constant->as<NameNode>().name() == TaggedParserAtomIndex ::WellKnown::undefined())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(constant->as<NameNode> ().name() == TaggedParserAtomIndex::WellKnown::undefined()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("constant->as<NameNode>().name() == TaggedParserAtomIndex::WellKnown::undefined()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8913); AnnotateMozCrashReason("MOZ_ASSERT" "(" "constant->as<NameNode>().name() == TaggedParserAtomIndex::WellKnown::undefined()" ")"); do { MOZ_CrashSequence(__null, 8913); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 8913 | TaggedParserAtomIndex::WellKnown::undefined())do { static_assert( mozilla::detail::AssertionConditionType< decltype(constant->as<NameNode>().name() == TaggedParserAtomIndex ::WellKnown::undefined())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(constant->as<NameNode> ().name() == TaggedParserAtomIndex::WellKnown::undefined()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("constant->as<NameNode>().name() == TaggedParserAtomIndex::WellKnown::undefined()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 8913); AnnotateMozCrashReason("MOZ_ASSERT" "(" "constant->as<NameNode>().name() == TaggedParserAtomIndex::WellKnown::undefined()" ")"); do { MOZ_CrashSequence(__null, 8913); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 8914 | NameLocation loc = lookupName(constant->as<NameNode>().name()); |
| 8915 | switch (loc.kind()) { |
| 8916 | case NameLocation::Kind::Global: |
| 8917 | if (!sc->hasNonSyntacticScope()) { |
| 8918 | return Some(ConstantCompareOperand( |
| 8919 | ConstantCompareOperand::EncodedType::Undefined)); |
| 8920 | } |
| 8921 | return Nothing(); |
| 8922 | case NameLocation::Kind::Intrinsic: |
| 8923 | return Some(ConstantCompareOperand( |
| 8924 | ConstantCompareOperand::EncodedType::Undefined)); |
| 8925 | default: |
| 8926 | return Nothing(); |
| 8927 | } |
| 8928 | } |
| 8929 | default: |
| 8930 | return Nothing(); |
| 8931 | } |
| 8932 | } |
| 8933 | |
| 8934 | bool BytecodeEmitter::tryEmitConstantEq(ListNode* node, JSOp op, |
| 8935 | bool* emitted) { |
| 8936 | // We ignore long chains of === or !==, we |
| 8937 | // only optimise cases a === b or a !== b |
| 8938 | if (node->count() != 2) { |
| 8939 | *emitted = false; |
| 8940 | return true; |
| 8941 | } |
| 8942 | |
| 8943 | JSOp constantOp; |
| 8944 | switch (op) { |
| 8945 | case JSOp::StrictEq: |
| 8946 | constantOp = JSOp::StrictConstantEq; |
| 8947 | break; |
| 8948 | case JSOp::StrictNe: |
| 8949 | constantOp = JSOp::StrictConstantNe; |
| 8950 | break; |
| 8951 | default: |
| 8952 | *emitted = false; |
| 8953 | return true; |
| 8954 | } |
| 8955 | |
| 8956 | ParseNode* left = node->head(); |
| 8957 | ParseNode* right = node->head()->pn_next; |
| 8958 | |
| 8959 | ParseNode* expressionNode; |
| 8960 | ParseNode* constantNode; |
| 8961 | if (left->isConstant() || left->isUndefinedLiteral()) { |
| 8962 | expressionNode = right; |
| 8963 | constantNode = left; |
| 8964 | } else if (right->isConstant() || right->isUndefinedLiteral()) { |
| 8965 | expressionNode = left; |
| 8966 | constantNode = right; |
| 8967 | } else { |
| 8968 | *emitted = false; |
| 8969 | return true; |
| 8970 | } |
| 8971 | |
| 8972 | Maybe<ConstantCompareOperand> operand = |
| 8973 | parseNodeToConstantCompareOperand(constantNode); |
| 8974 | if (operand.isNothing()) { |
| 8975 | *emitted = false; |
| 8976 | return true; |
| 8977 | } |
| 8978 | |
| 8979 | if (!emitTree(expressionNode)) { |
| 8980 | return false; |
| 8981 | } |
| 8982 | |
| 8983 | if (!emitUint16Operand(constantOp, operand->rawValue())) { |
| 8984 | return false; |
| 8985 | } |
| 8986 | |
| 8987 | *emitted = true; |
| 8988 | return true; |
| 8989 | } |
| 8990 | |
| 8991 | bool BytecodeEmitter::emitLeftAssociative(ListNode* node) { |
| 8992 | JSOp op = BinaryOpParseNodeKindToJSOp(node->getKind()); |
| 8993 | bool constantEqEmitted = false; |
| 8994 | if (!tryEmitConstantEq(node, op, &constantEqEmitted)) { |
| 8995 | return false; |
| 8996 | } |
| 8997 | if (constantEqEmitted) { |
| 8998 | return true; |
| 8999 | } |
| 9000 | // Left-associative operator chain. |
| 9001 | if (!emitTree(node->head())) { |
| 9002 | return false; |
| 9003 | } |
| 9004 | ParseNode* nextExpr = node->head()->pn_next; |
| 9005 | do { |
| 9006 | if (!updateSourceCoordNotesIfNonLiteral(nextExpr)) { |
| 9007 | return false; |
| 9008 | } |
| 9009 | if (!emitTree(nextExpr)) { |
| 9010 | return false; |
| 9011 | } |
| 9012 | if (!emit1(op)) { |
| 9013 | return false; |
| 9014 | } |
| 9015 | } while ((nextExpr = nextExpr->pn_next)); |
| 9016 | return true; |
| 9017 | } |
| 9018 | |
| 9019 | bool BytecodeEmitter::emitPrivateInExpr(ListNode* node) { |
| 9020 | MOZ_ASSERT(node->head()->isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->head()->isKind(ParseNodeKind::PrivateName ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(node->head()->isKind(ParseNodeKind::PrivateName )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("node->head()->isKind(ParseNodeKind::PrivateName)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 9020); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->head()->isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 9020); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9021 | |
| 9022 | NameNode& privateNameNode = node->head()->as<NameNode>(); |
| 9023 | TaggedParserAtomIndex privateName = privateNameNode.name(); |
| 9024 | |
| 9025 | PrivateOpEmitter xoe(this, PrivateOpEmitter::Kind::ErgonomicBrandCheck, |
| 9026 | privateName); |
| 9027 | |
| 9028 | ParseNode* valueNode = node->head()->pn_next; |
| 9029 | MOZ_ASSERT(valueNode->pn_next == nullptr)do { static_assert( mozilla::detail::AssertionConditionType< decltype(valueNode->pn_next == nullptr)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(valueNode->pn_next == nullptr ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "valueNode->pn_next == nullptr", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 9029); AnnotateMozCrashReason("MOZ_ASSERT" "(" "valueNode->pn_next == nullptr" ")"); do { MOZ_CrashSequence(__null, 9029); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9030 | |
| 9031 | if (!emitTree(valueNode)) { |
| 9032 | // [stack] OBJ |
| 9033 | return false; |
| 9034 | } |
| 9035 | |
| 9036 | if (!xoe.emitReference()) { |
| 9037 | // [stack] OBJ BRAND if private method |
| 9038 | // [stack] OBJ NAME if private field or accessor. |
| 9039 | return false; |
| 9040 | } |
| 9041 | |
| 9042 | if (!xoe.emitBrandCheck()) { |
| 9043 | // [stack] OBJ BRAND BOOL if private method |
| 9044 | // [stack] OBJ NAME BOOL if private field or accessor. |
| 9045 | return false; |
| 9046 | } |
| 9047 | |
| 9048 | if (!emitUnpickN(2)) { |
| 9049 | // [stack] BOOL OBJ BRAND if private method |
| 9050 | // [stack] BOOL OBJ NAME if private field or accessor. |
| 9051 | return false; |
| 9052 | } |
| 9053 | |
| 9054 | if (!emitPopN(2)) { |
| 9055 | // [stack] BOOL |
| 9056 | return false; |
| 9057 | } |
| 9058 | |
| 9059 | return true; |
| 9060 | } |
| 9061 | |
| 9062 | /* |
| 9063 | * Special `emitTree` for Optional Chaining case. |
| 9064 | * Examples of this are `emitOptionalChain`, `emitDeleteOptionalChain` and |
| 9065 | * `emitCalleeAndThisForOptionalChain`. |
| 9066 | */ |
| 9067 | bool BytecodeEmitter::emitOptionalTree( |
| 9068 | ParseNode* pn, OptionalEmitter& oe, |
| 9069 | ValueUsage valueUsage /* = ValueUsage::WantValue */) { |
| 9070 | AutoCheckRecursionLimit recursion(fc); |
| 9071 | if (!recursion.check(fc)) { |
| 9072 | return false; |
| 9073 | } |
| 9074 | ParseNodeKind kind = pn->getKind(); |
| 9075 | switch (kind) { |
| 9076 | case ParseNodeKind::OptionalDotExpr: { |
| 9077 | OptionalPropertyAccess* prop = &pn->as<OptionalPropertyAccess>(); |
| 9078 | bool isSuper = false; |
| 9079 | PropOpEmitter poe(this, PropOpEmitter::Kind::Get, |
| 9080 | PropOpEmitter::ObjKind::Other); |
| 9081 | if (!emitOptionalDotExpression(prop, poe, isSuper, oe)) { |
| 9082 | return false; |
| 9083 | } |
| 9084 | break; |
| 9085 | } |
| 9086 | case ParseNodeKind::ArgumentsLength: { |
| 9087 | // Emit via emitArgumentsLength to handle elided arguments bindings; |
| 9088 | // emitOptionalDotExpression would instead emit a plain GetName of |
| 9089 | // |arguments|. |
| 9090 | if (!emitArgumentsLength()) { |
| 9091 | return false; |
| 9092 | } |
| 9093 | break; |
| 9094 | } |
| 9095 | case ParseNodeKind::DotExpr: { |
| 9096 | PropertyAccess* prop = &pn->as<PropertyAccess>(); |
| 9097 | bool isSuper = prop->isSuper(); |
| 9098 | PropOpEmitter poe(this, PropOpEmitter::Kind::Get, |
| 9099 | isSuper ? PropOpEmitter::ObjKind::Super |
| 9100 | : PropOpEmitter::ObjKind::Other); |
| 9101 | if (!emitOptionalDotExpression(prop, poe, isSuper, oe)) { |
| 9102 | return false; |
| 9103 | } |
| 9104 | break; |
| 9105 | } |
| 9106 | |
| 9107 | case ParseNodeKind::OptionalElemExpr: { |
| 9108 | OptionalPropertyByValue* elem = &pn->as<OptionalPropertyByValue>(); |
| 9109 | bool isSuper = false; |
| 9110 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9110); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 9110); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9111 | ElemOpEmitter eoe(this, ElemOpEmitter::Kind::Get, |
| 9112 | ElemOpEmitter::ObjKind::Other); |
| 9113 | |
| 9114 | if (!emitOptionalElemExpression(elem, eoe, isSuper, oe)) { |
| 9115 | return false; |
| 9116 | } |
| 9117 | break; |
| 9118 | } |
| 9119 | case ParseNodeKind::ElemExpr: { |
| 9120 | PropertyByValue* elem = &pn->as<PropertyByValue>(); |
| 9121 | bool isSuper = elem->isSuper(); |
| 9122 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9122); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 9122); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9123 | ElemOpEmitter eoe(this, ElemOpEmitter::Kind::Get, |
| 9124 | isSuper ? ElemOpEmitter::ObjKind::Super |
| 9125 | : ElemOpEmitter::ObjKind::Other); |
| 9126 | |
| 9127 | if (!emitOptionalElemExpression(elem, eoe, isSuper, oe)) { |
| 9128 | return false; |
| 9129 | } |
| 9130 | break; |
| 9131 | } |
| 9132 | case ParseNodeKind::PrivateMemberExpr: |
| 9133 | case ParseNodeKind::OptionalPrivateMemberExpr: { |
| 9134 | PrivateMemberAccessBase* privateExpr = &pn->as<PrivateMemberAccessBase>(); |
| 9135 | PrivateOpEmitter xoe(this, PrivateOpEmitter::Kind::Get, |
| 9136 | privateExpr->privateName().name()); |
| 9137 | if (!emitOptionalPrivateExpression(privateExpr, xoe, oe)) { |
| 9138 | return false; |
| 9139 | } |
| 9140 | break; |
| 9141 | } |
| 9142 | case ParseNodeKind::CallExpr: |
| 9143 | case ParseNodeKind::OptionalCallExpr: |
| 9144 | if (!emitOptionalCall(&pn->as<CallNode>(), oe, valueUsage)) { |
| 9145 | return false; |
| 9146 | } |
| 9147 | break; |
| 9148 | // List of accepted ParseNodeKinds that might appear only at the beginning |
| 9149 | // of an Optional Chain. |
| 9150 | // For example, a taggedTemplateExpr node might occur if we have |
| 9151 | // `test`?.b, with `test` as the taggedTemplateExpr ParseNode. |
| 9152 | default: |
| 9153 | #ifdef DEBUG1 |
| 9154 | // https://tc39.es/ecma262/#sec-primary-expression |
| 9155 | bool isPrimaryExpression = |
| 9156 | kind == ParseNodeKind::ThisExpr || kind == ParseNodeKind::Name || |
| 9157 | kind == ParseNodeKind::PrivateName || |
| 9158 | kind == ParseNodeKind::NullExpr || kind == ParseNodeKind::TrueExpr || |
| 9159 | kind == ParseNodeKind::FalseExpr || |
| 9160 | kind == ParseNodeKind::NumberExpr || |
| 9161 | kind == ParseNodeKind::BigIntExpr || |
| 9162 | kind == ParseNodeKind::StringExpr || |
| 9163 | kind == ParseNodeKind::ArrayExpr || |
| 9164 | kind == ParseNodeKind::ObjectExpr || |
| 9165 | kind == ParseNodeKind::Function || kind == ParseNodeKind::ClassDecl || |
| 9166 | kind == ParseNodeKind::RegExpExpr || |
| 9167 | kind == ParseNodeKind::TemplateStringExpr || |
| 9168 | kind == ParseNodeKind::TemplateStringListExpr || |
| 9169 | kind == ParseNodeKind::RawUndefinedExpr || pn->isInParens(); |
| 9170 | |
| 9171 | // https://tc39.es/ecma262/#sec-left-hand-side-expressions |
| 9172 | bool isMemberExpression = isPrimaryExpression || |
| 9173 | kind == ParseNodeKind::TaggedTemplateExpr || |
| 9174 | kind == ParseNodeKind::NewExpr || |
| 9175 | kind == ParseNodeKind::NewTargetExpr || |
| 9176 | kind == ParseNodeKind::ImportMetaExpr; |
| 9177 | |
| 9178 | bool isCallExpression = kind == ParseNodeKind::SetThis || |
| 9179 | kind == ParseNodeKind::CallImportExpr; |
| 9180 | |
| 9181 | MOZ_ASSERT(isMemberExpression || isCallExpression,do { static_assert( mozilla::detail::AssertionConditionType< decltype(isMemberExpression || isCallExpression)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(isMemberExpression || isCallExpression))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("isMemberExpression || isCallExpression" " (" "Unknown ParseNodeKind for OptionalChain" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 9182); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isMemberExpression || isCallExpression" ") (" "Unknown ParseNodeKind for OptionalChain" ")"); do { MOZ_CrashSequence (__null, 9182); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
| 9182 | "Unknown ParseNodeKind for OptionalChain")do { static_assert( mozilla::detail::AssertionConditionType< decltype(isMemberExpression || isCallExpression)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(isMemberExpression || isCallExpression))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("isMemberExpression || isCallExpression" " (" "Unknown ParseNodeKind for OptionalChain" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 9182); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isMemberExpression || isCallExpression" ") (" "Unknown ParseNodeKind for OptionalChain" ")"); do { MOZ_CrashSequence (__null, 9182); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 9183 | #endif |
| 9184 | return emitTree(pn); |
| 9185 | } |
| 9186 | return true; |
| 9187 | } |
| 9188 | |
| 9189 | // Handle the case of a call made on a OptionalChainParseNode. |
| 9190 | // For example `(a?.b)()` and `(a?.b)?.()`. |
| 9191 | bool BytecodeEmitter::emitCalleeAndThisForOptionalChain( |
| 9192 | UnaryNode* optionalChain, CallNode* callNode, CallOrNewEmitter& cone) { |
| 9193 | ParseNode* calleeNode = optionalChain->kid(); |
| 9194 | |
| 9195 | // Create a new OptionalEmitter, in order to emit the right bytecode |
| 9196 | // in isolation. |
| 9197 | OptionalEmitter oe(this, bytecodeSection().stackDepth()); |
| 9198 | |
| 9199 | if (!emitOptionalCalleeAndThis(calleeNode, callNode, cone, oe)) { |
| 9200 | // [stack] CALLEE THIS |
| 9201 | return false; |
| 9202 | } |
| 9203 | |
| 9204 | // complete the jump if necessary. This will set both the "this" value |
| 9205 | // and the "callee" value to undefined, if the callee is undefined. It |
| 9206 | // does not matter much what the this value is, the function call will |
| 9207 | // fail if it is not optional, and be set to undefined otherwise. |
| 9208 | if (!oe.emitOptionalJumpTarget(JSOp::Undefined, |
| 9209 | OptionalEmitter::Kind::Reference)) { |
| 9210 | // [stack] # If shortcircuit |
| 9211 | // [stack] UNDEFINED UNDEFINED |
| 9212 | // [stack] # otherwise |
| 9213 | // [stack] CALLEE THIS |
| 9214 | return false; |
| 9215 | } |
| 9216 | return true; |
| 9217 | } |
| 9218 | |
| 9219 | bool BytecodeEmitter::emitOptionalChain(UnaryNode* optionalChain, |
| 9220 | ValueUsage valueUsage) { |
| 9221 | ParseNode* expr = optionalChain->kid(); |
| 9222 | |
| 9223 | OptionalEmitter oe(this, bytecodeSection().stackDepth()); |
| 9224 | |
| 9225 | if (!emitOptionalTree(expr, oe, valueUsage)) { |
| 9226 | // [stack] VAL |
| 9227 | return false; |
| 9228 | } |
| 9229 | |
| 9230 | if (!oe.emitOptionalJumpTarget(JSOp::Undefined)) { |
| 9231 | // [stack] # If shortcircuit |
| 9232 | // [stack] UNDEFINED |
| 9233 | // [stack] # otherwise |
| 9234 | // [stack] VAL |
| 9235 | return false; |
| 9236 | } |
| 9237 | |
| 9238 | return true; |
| 9239 | } |
| 9240 | |
| 9241 | bool BytecodeEmitter::emitOptionalDotExpression(PropertyAccessBase* prop, |
| 9242 | PropOpEmitter& poe, |
| 9243 | bool isSuper, |
| 9244 | OptionalEmitter& oe) { |
| 9245 | if (!poe.prepareForObj()) { |
| 9246 | // [stack] |
| 9247 | return false; |
| 9248 | } |
| 9249 | |
| 9250 | if (isSuper) { |
| 9251 | UnaryNode* base = &prop->expression().as<UnaryNode>(); |
| 9252 | if (!emitGetThisForSuperBase(base)) { |
| 9253 | // [stack] OBJ |
| 9254 | return false; |
| 9255 | } |
| 9256 | } else { |
| 9257 | if (!emitOptionalTree(&prop->expression(), oe)) { |
| 9258 | // [stack] OBJ |
| 9259 | return false; |
| 9260 | } |
| 9261 | } |
| 9262 | |
| 9263 | if (prop->isKind(ParseNodeKind::OptionalDotExpr)) { |
| 9264 | MOZ_ASSERT(!isSuper)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!isSuper)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!isSuper))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!isSuper", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 9264); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!isSuper" ")" ); do { MOZ_CrashSequence(__null, 9264); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9265 | if (!oe.emitJumpShortCircuit()) { |
| 9266 | // [stack] # if Jump |
| 9267 | // [stack] UNDEFINED-OR-NULL |
| 9268 | // [stack] # otherwise |
| 9269 | // [stack] OBJ |
| 9270 | return false; |
| 9271 | } |
| 9272 | } |
| 9273 | |
| 9274 | if (!poe.emitGet(prop->key().atom())) { |
| 9275 | // [stack] PROP |
| 9276 | return false; |
| 9277 | } |
| 9278 | |
| 9279 | return true; |
| 9280 | } |
| 9281 | |
| 9282 | bool BytecodeEmitter::emitOptionalElemExpression(PropertyByValueBase* elem, |
| 9283 | ElemOpEmitter& eoe, |
| 9284 | bool isSuper, |
| 9285 | OptionalEmitter& oe) { |
| 9286 | if (!eoe.prepareForObj()) { |
| 9287 | // [stack] |
| 9288 | return false; |
| 9289 | } |
| 9290 | |
| 9291 | if (isSuper) { |
| 9292 | UnaryNode* base = &elem->expression().as<UnaryNode>(); |
| 9293 | if (!emitGetThisForSuperBase(base)) { |
| 9294 | // [stack] OBJ |
| 9295 | return false; |
| 9296 | } |
| 9297 | } else { |
| 9298 | if (!emitOptionalTree(&elem->expression(), oe)) { |
| 9299 | // [stack] OBJ |
| 9300 | return false; |
| 9301 | } |
| 9302 | } |
| 9303 | |
| 9304 | if (elem->isKind(ParseNodeKind::OptionalElemExpr)) { |
| 9305 | MOZ_ASSERT(!isSuper)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!isSuper)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!isSuper))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!isSuper", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 9305); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!isSuper" ")" ); do { MOZ_CrashSequence(__null, 9305); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9306 | if (!oe.emitJumpShortCircuit()) { |
| 9307 | // [stack] # if Jump |
| 9308 | // [stack] UNDEFINED-OR-NULL |
| 9309 | // [stack] # otherwise |
| 9310 | // [stack] OBJ |
| 9311 | return false; |
| 9312 | } |
| 9313 | } |
| 9314 | |
| 9315 | if (!eoe.prepareForKey()) { |
| 9316 | // [stack] OBJ? OBJ |
| 9317 | return false; |
| 9318 | } |
| 9319 | |
| 9320 | if (!emitTree(&elem->key())) { |
| 9321 | // [stack] OBJ? OBJ KEY |
| 9322 | return false; |
| 9323 | } |
| 9324 | |
| 9325 | if (!eoe.emitGet()) { |
| 9326 | // [stack] ELEM |
| 9327 | return false; |
| 9328 | } |
| 9329 | |
| 9330 | return true; |
| 9331 | } |
| 9332 | |
| 9333 | bool BytecodeEmitter::emitOptionalPrivateExpression( |
| 9334 | PrivateMemberAccessBase* privateExpr, PrivateOpEmitter& xoe, |
| 9335 | OptionalEmitter& oe) { |
| 9336 | if (!emitOptionalTree(&privateExpr->expression(), oe)) { |
| 9337 | // [stack] OBJ |
| 9338 | return false; |
| 9339 | } |
| 9340 | |
| 9341 | if (privateExpr->isKind(ParseNodeKind::OptionalPrivateMemberExpr)) { |
| 9342 | if (!oe.emitJumpShortCircuit()) { |
| 9343 | // [stack] # if Jump |
| 9344 | // [stack] UNDEFINED-OR-NULL |
| 9345 | // [stack] # otherwise |
| 9346 | // [stack] OBJ |
| 9347 | return false; |
| 9348 | } |
| 9349 | } |
| 9350 | |
| 9351 | if (!xoe.emitReference()) { |
| 9352 | // [stack] OBJ NAME |
| 9353 | return false; |
| 9354 | } |
| 9355 | if (!xoe.emitGet()) { |
| 9356 | // [stack] CALLEE THIS # if call |
| 9357 | // [stack] VALUE # otherwise |
| 9358 | return false; |
| 9359 | } |
| 9360 | |
| 9361 | return true; |
| 9362 | } |
| 9363 | |
| 9364 | bool BytecodeEmitter::emitShortCircuit(ListNode* node, ValueUsage valueUsage) { |
| 9365 | MOZ_ASSERT(node->isKind(ParseNodeKind::OrExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::OrExpr) || node->isKind (ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind ::AndExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::OrExpr ) || node->isKind(ParseNodeKind::CoalesceExpr) || node-> isKind(ParseNodeKind::AndExpr)))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::OrExpr) || node->isKind(ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind::AndExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9367); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::OrExpr) || node->isKind(ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind::AndExpr)" ")"); do { MOZ_CrashSequence(__null, 9367); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 9366 | node->isKind(ParseNodeKind::CoalesceExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::OrExpr) || node->isKind (ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind ::AndExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::OrExpr ) || node->isKind(ParseNodeKind::CoalesceExpr) || node-> isKind(ParseNodeKind::AndExpr)))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::OrExpr) || node->isKind(ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind::AndExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9367); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::OrExpr) || node->isKind(ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind::AndExpr)" ")"); do { MOZ_CrashSequence(__null, 9367); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 9367 | node->isKind(ParseNodeKind::AndExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::OrExpr) || node->isKind (ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind ::AndExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::OrExpr ) || node->isKind(ParseNodeKind::CoalesceExpr) || node-> isKind(ParseNodeKind::AndExpr)))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::OrExpr) || node->isKind(ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind::AndExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9367); AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::OrExpr) || node->isKind(ParseNodeKind::CoalesceExpr) || node->isKind(ParseNodeKind::AndExpr)" ")"); do { MOZ_CrashSequence(__null, 9367); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9368 | |
| 9369 | /* |
| 9370 | * JSOp::Or converts the operand on the stack to boolean, leaves the original |
| 9371 | * value on the stack and jumps if true; otherwise it falls into the next |
| 9372 | * bytecode, which pops the left operand and then evaluates the right operand. |
| 9373 | * The jump goes around the right operand evaluation. |
| 9374 | * |
| 9375 | * JSOp::And converts the operand on the stack to boolean and jumps if false; |
| 9376 | * otherwise it falls into the right operand's bytecode. |
| 9377 | */ |
| 9378 | |
| 9379 | TDZCheckCache tdzCache(this); |
| 9380 | |
| 9381 | JSOp op; |
| 9382 | switch (node->getKind()) { |
| 9383 | case ParseNodeKind::OrExpr: |
| 9384 | op = JSOp::Or; |
| 9385 | break; |
| 9386 | case ParseNodeKind::CoalesceExpr: |
| 9387 | op = JSOp::Coalesce; |
| 9388 | break; |
| 9389 | case ParseNodeKind::AndExpr: |
| 9390 | op = JSOp::And; |
| 9391 | break; |
| 9392 | default: |
| 9393 | MOZ_CRASH("Unexpected ParseNodeKind")do { do { } while (false); MOZ_ReportCrash("" "Unexpected ParseNodeKind" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9393); AnnotateMozCrashReason("MOZ_CRASH(" "Unexpected ParseNodeKind" ")"); do { MOZ_CrashSequence(__null, 9393); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 9394 | } |
| 9395 | |
| 9396 | JumpList jump; |
| 9397 | |
| 9398 | // Left-associative operator chain: avoid too much recursion. |
| 9399 | // |
| 9400 | // Emit all nodes but the last. |
| 9401 | for (ParseNode* expr : node->contentsTo(node->last())) { |
| 9402 | if (!emitTree(expr)) { |
| 9403 | return false; |
| 9404 | } |
| 9405 | if (!emitJump(op, &jump)) { |
| 9406 | return false; |
| 9407 | } |
| 9408 | if (!emit1(JSOp::Pop)) { |
| 9409 | return false; |
| 9410 | } |
| 9411 | } |
| 9412 | |
| 9413 | // Emit the last node |
| 9414 | if (!emitTree(node->last(), valueUsage)) { |
| 9415 | return false; |
| 9416 | } |
| 9417 | |
| 9418 | if (!emitJumpTargetAndPatch(jump)) { |
| 9419 | return false; |
| 9420 | } |
| 9421 | return true; |
| 9422 | } |
| 9423 | |
| 9424 | bool BytecodeEmitter::emitSequenceExpr(ListNode* node, ValueUsage valueUsage) { |
| 9425 | for (ParseNode* child : node->contentsTo(node->last())) { |
| 9426 | if (!updateSourceCoordNotes(child->pn_pos.begin)) { |
| 9427 | return false; |
| 9428 | } |
| 9429 | if (!emitTree(child, ValueUsage::IgnoreValue)) { |
| 9430 | return false; |
| 9431 | } |
| 9432 | if (!emit1(JSOp::Pop)) { |
| 9433 | return false; |
| 9434 | } |
| 9435 | } |
| 9436 | |
| 9437 | ParseNode* child = node->last(); |
| 9438 | if (!updateSourceCoordNotes(child->pn_pos.begin)) { |
| 9439 | return false; |
| 9440 | } |
| 9441 | if (!emitTree(child, valueUsage)) { |
| 9442 | return false; |
| 9443 | } |
| 9444 | return true; |
| 9445 | } |
| 9446 | |
| 9447 | // Using MOZ_NEVER_INLINE in here is a workaround for llvm.org/pr14047. See |
| 9448 | // the comment on emitSwitch. |
| 9449 | MOZ_NEVER_INLINE__attribute__((noinline)) bool BytecodeEmitter::emitIncOrDec(UnaryNode* incDec, |
| 9450 | ValueUsage valueUsage) { |
| 9451 | switch (incDec->kid()->getKind()) { |
| 9452 | case ParseNodeKind::ArgumentsLength: |
| 9453 | case ParseNodeKind::DotExpr: |
| 9454 | return emitPropIncDec(incDec, valueUsage); |
| 9455 | case ParseNodeKind::ElemExpr: |
| 9456 | return emitElemIncDec(incDec, valueUsage); |
| 9457 | case ParseNodeKind::PrivateMemberExpr: |
| 9458 | return emitPrivateIncDec(incDec, valueUsage); |
| 9459 | case ParseNodeKind::CallExpr: |
| 9460 | return emitCallIncDec(incDec); |
| 9461 | default: |
| 9462 | return emitNameIncDec(incDec, valueUsage); |
| 9463 | } |
| 9464 | } |
| 9465 | |
| 9466 | // Using MOZ_NEVER_INLINE in here is a workaround for llvm.org/pr14047. See |
| 9467 | // the comment on emitSwitch. |
| 9468 | MOZ_NEVER_INLINE__attribute__((noinline)) bool BytecodeEmitter::emitLabeledStatement( |
| 9469 | const LabeledStatement* labeledStmt) { |
| 9470 | auto name = labeledStmt->label(); |
| 9471 | LabelEmitter label(this); |
| 9472 | |
| 9473 | label.emitLabel(name); |
| 9474 | |
| 9475 | if (!emitTree(labeledStmt->statement())) { |
| 9476 | return false; |
| 9477 | } |
| 9478 | if (!label.emitEnd()) { |
| 9479 | return false; |
| 9480 | } |
| 9481 | |
| 9482 | return true; |
| 9483 | } |
| 9484 | |
| 9485 | bool BytecodeEmitter::emitConditionalExpression( |
| 9486 | ConditionalExpression& conditional, ValueUsage valueUsage) { |
| 9487 | CondEmitter cond(this); |
| 9488 | if (!cond.emitCond()) { |
| 9489 | return false; |
| 9490 | } |
| 9491 | |
| 9492 | ParseNode* conditionNode = &conditional.condition(); |
| 9493 | auto conditionKind = IfEmitter::ConditionKind::Positive; |
| 9494 | if (conditionNode->isKind(ParseNodeKind::NotExpr)) { |
| 9495 | conditionNode = conditionNode->as<UnaryNode>().kid(); |
| 9496 | conditionKind = IfEmitter::ConditionKind::Negative; |
| 9497 | } |
| 9498 | |
| 9499 | // NOTE: NotExpr of conditionNode may be unwrapped, and in that case the |
| 9500 | // negation is handled by conditionKind. |
| 9501 | if (!emitTree(conditionNode)) { |
| 9502 | return false; |
| 9503 | } |
| 9504 | |
| 9505 | if (!cond.emitThenElse(conditionKind)) { |
| 9506 | return false; |
| 9507 | } |
| 9508 | |
| 9509 | if (!emitTree(&conditional.thenExpression(), valueUsage)) { |
| 9510 | return false; |
| 9511 | } |
| 9512 | |
| 9513 | if (!cond.emitElse()) { |
| 9514 | return false; |
| 9515 | } |
| 9516 | |
| 9517 | if (!emitTree(&conditional.elseExpression(), valueUsage)) { |
| 9518 | return false; |
| 9519 | } |
| 9520 | |
| 9521 | if (!cond.emitEnd()) { |
| 9522 | return false; |
| 9523 | } |
| 9524 | MOZ_ASSERT(cond.pushed() == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(cond.pushed() == 1)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(cond.pushed() == 1))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("cond.pushed() == 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9524); AnnotateMozCrashReason("MOZ_ASSERT" "(" "cond.pushed() == 1" ")"); do { MOZ_CrashSequence(__null, 9524); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9525 | |
| 9526 | return true; |
| 9527 | } |
| 9528 | |
| 9529 | // Check for an object-literal property list that can be handled by the |
| 9530 | // ObjLiteral writer. We ensure that for each `prop: value` pair, the key is a |
| 9531 | // constant name or numeric index, there is no accessor specified, and the value |
| 9532 | // can be encoded by an ObjLiteral instruction (constant number, string, |
| 9533 | // boolean, null/undefined). |
| 9534 | void BytecodeEmitter::isPropertyListObjLiteralCompatible( |
| 9535 | ListNode* obj, bool* withValues, bool* withoutValues) const { |
| 9536 | bool keysOK = true; |
| 9537 | bool valuesOK = true; |
| 9538 | uint32_t propCount = 0; |
| 9539 | |
| 9540 | for (ParseNode* propdef : obj->contents()) { |
| 9541 | if (!propdef->is<BinaryNode>()) { |
| 9542 | keysOK = false; |
| 9543 | break; |
| 9544 | } |
| 9545 | propCount++; |
| 9546 | |
| 9547 | BinaryNode* prop = &propdef->as<BinaryNode>(); |
| 9548 | ParseNode* key = prop->left(); |
| 9549 | ParseNode* value = prop->right(); |
| 9550 | |
| 9551 | // Computed keys not OK (ObjLiteral data stores constant keys). |
| 9552 | if (key->isKind(ParseNodeKind::ComputedName)) { |
| 9553 | keysOK = false; |
| 9554 | break; |
| 9555 | } |
| 9556 | |
| 9557 | // BigIntExprs should have been lowered to computed names at parse |
| 9558 | // time, and so should be excluded above. |
| 9559 | MOZ_ASSERT(!key->isKind(ParseNodeKind::BigIntExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!key->isKind(ParseNodeKind::BigIntExpr))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(!key->isKind(ParseNodeKind::BigIntExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!key->isKind(ParseNodeKind::BigIntExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9559); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!key->isKind(ParseNodeKind::BigIntExpr)" ")"); do { MOZ_CrashSequence(__null, 9559); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9560 | |
| 9561 | // Numeric keys OK as long as they are integers and in range. |
| 9562 | if (key->isKind(ParseNodeKind::NumberExpr)) { |
| 9563 | double numValue = key->as<NumericLiteral>().value(); |
| 9564 | int32_t i = 0; |
| 9565 | if (!NumberIsInt32(numValue, &i)) { |
| 9566 | keysOK = false; |
| 9567 | break; |
| 9568 | } |
| 9569 | if (!ObjLiteralWriter::arrayIndexInRange(i)) { |
| 9570 | keysOK = false; |
| 9571 | break; |
| 9572 | } |
| 9573 | } |
| 9574 | |
| 9575 | MOZ_ASSERT(key->isKind(ParseNodeKind::ObjectPropertyName) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind( ParseNodeKind::NumberExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(key->isKind(ParseNodeKind ::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr ) || key->isKind(ParseNodeKind::NumberExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind(ParseNodeKind::NumberExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9577); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind(ParseNodeKind::NumberExpr)" ")"); do { MOZ_CrashSequence(__null, 9577); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 9576 | key->isKind(ParseNodeKind::StringExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind( ParseNodeKind::NumberExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(key->isKind(ParseNodeKind ::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr ) || key->isKind(ParseNodeKind::NumberExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind(ParseNodeKind::NumberExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9577); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind(ParseNodeKind::NumberExpr)" ")"); do { MOZ_CrashSequence(__null, 9577); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 9577 | key->isKind(ParseNodeKind::NumberExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind( ParseNodeKind::NumberExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(key->isKind(ParseNodeKind ::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr ) || key->isKind(ParseNodeKind::NumberExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind(ParseNodeKind::NumberExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9577); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::ObjectPropertyName) || key->isKind(ParseNodeKind::StringExpr) || key->isKind(ParseNodeKind::NumberExpr)" ")"); do { MOZ_CrashSequence(__null, 9577); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9578 | |
| 9579 | AccessorType accessorType = |
| 9580 | prop->is<PropertyDefinition>() |
| 9581 | ? prop->as<PropertyDefinition>().accessorType() |
| 9582 | : AccessorType::None; |
| 9583 | if (accessorType != AccessorType::None) { |
| 9584 | keysOK = false; |
| 9585 | break; |
| 9586 | } |
| 9587 | |
| 9588 | if (!isRHSObjLiteralCompatible(value)) { |
| 9589 | valuesOK = false; |
| 9590 | } |
| 9591 | } |
| 9592 | |
| 9593 | if (propCount > SharedPropMap::MaxPropsForNonDictionary) { |
| 9594 | // JSOp::NewObject cannot accept dictionary-mode objects. |
| 9595 | keysOK = false; |
| 9596 | } |
| 9597 | |
| 9598 | *withValues = keysOK && valuesOK; |
| 9599 | *withoutValues = keysOK; |
| 9600 | } |
| 9601 | |
| 9602 | bool BytecodeEmitter::isArrayObjLiteralCompatible(ListNode* array) const { |
| 9603 | for (ParseNode* elem : array->contents()) { |
| 9604 | if (elem->isKind(ParseNodeKind::Spread)) { |
| 9605 | return false; |
| 9606 | } |
| 9607 | if (!isRHSObjLiteralCompatible(elem)) { |
| 9608 | return false; |
| 9609 | } |
| 9610 | } |
| 9611 | return true; |
| 9612 | } |
| 9613 | |
| 9614 | bool BytecodeEmitter::emitPropertyList(ListNode* obj, PropertyEmitter& pe, |
| 9615 | PropListType type) { |
| 9616 | // [stack] CTOR? OBJ |
| 9617 | |
| 9618 | size_t curFieldKeyIndex = 0; |
| 9619 | size_t curStaticFieldKeyIndex = 0; |
| 9620 | for (ParseNode* propdef : obj->contents()) { |
| 9621 | if (propdef->is<ClassField>()) { |
| 9622 | MOZ_ASSERT(type == ClassBody)do { static_assert( mozilla::detail::AssertionConditionType< decltype(type == ClassBody)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(type == ClassBody))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("type == ClassBody" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9622); AnnotateMozCrashReason("MOZ_ASSERT" "(" "type == ClassBody" ")" ); do { MOZ_CrashSequence(__null, 9622); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9623 | // Only handle computing field keys here: the .initializers lambda array |
| 9624 | // is created elsewhere. |
| 9625 | ClassField* field = &propdef->as<ClassField>(); |
| 9626 | if (field->name().getKind() == ParseNodeKind::ComputedName) { |
| 9627 | auto fieldKeys = |
| 9628 | field->isStatic() |
| 9629 | ? TaggedParserAtomIndex::WellKnown::dot_staticFieldKeys_() |
| 9630 | : TaggedParserAtomIndex::WellKnown::dot_fieldKeys_(); |
| 9631 | if (!emitGetName(fieldKeys)) { |
| 9632 | // [stack] CTOR OBJ ARRAY |
| 9633 | return false; |
| 9634 | } |
| 9635 | |
| 9636 | ParseNode* nameExpr = field->name().as<UnaryNode>().kid(); |
| 9637 | |
| 9638 | if (!emitTree(nameExpr, ValueUsage::WantValue)) { |
| 9639 | // [stack] CTOR OBJ ARRAY KEY |
| 9640 | return false; |
| 9641 | } |
| 9642 | |
| 9643 | if (!emit1(JSOp::ToPropertyKey)) { |
| 9644 | // [stack] CTOR OBJ ARRAY KEY |
| 9645 | return false; |
| 9646 | } |
| 9647 | |
| 9648 | size_t fieldKeysIndex; |
| 9649 | if (field->isStatic()) { |
| 9650 | fieldKeysIndex = curStaticFieldKeyIndex++; |
| 9651 | } else { |
| 9652 | fieldKeysIndex = curFieldKeyIndex++; |
| 9653 | } |
| 9654 | |
| 9655 | if (!emitUint32Operand(JSOp::InitElemArray, fieldKeysIndex)) { |
| 9656 | // [stack] CTOR OBJ ARRAY |
| 9657 | return false; |
| 9658 | } |
| 9659 | |
| 9660 | if (!emit1(JSOp::Pop)) { |
| 9661 | // [stack] CTOR OBJ |
| 9662 | return false; |
| 9663 | } |
| 9664 | } |
| 9665 | continue; |
| 9666 | } |
| 9667 | |
| 9668 | if (propdef->isKind(ParseNodeKind::StaticClassBlock)) { |
| 9669 | // Static class blocks are emitted as part of |
| 9670 | // emitCreateMemberInitializers. |
| 9671 | continue; |
| 9672 | } |
| 9673 | |
| 9674 | if (propdef->is<LexicalScopeNode>()) { |
| 9675 | // Constructors are sometimes wrapped in LexicalScopeNodes. As we |
| 9676 | // already handled emitting the constructor, skip it. |
| 9677 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(propdef->as<LexicalScopeNode>().scopeBody() ->is<ClassMethod>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(propdef->as<LexicalScopeNode >().scopeBody()->is<ClassMethod>()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("propdef->as<LexicalScopeNode>().scopeBody()->is<ClassMethod>()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9678); AnnotateMozCrashReason("MOZ_ASSERT" "(" "propdef->as<LexicalScopeNode>().scopeBody()->is<ClassMethod>()" ")"); do { MOZ_CrashSequence(__null, 9678); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 9678 | propdef->as<LexicalScopeNode>().scopeBody()->is<ClassMethod>())do { static_assert( mozilla::detail::AssertionConditionType< decltype(propdef->as<LexicalScopeNode>().scopeBody() ->is<ClassMethod>())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(propdef->as<LexicalScopeNode >().scopeBody()->is<ClassMethod>()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("propdef->as<LexicalScopeNode>().scopeBody()->is<ClassMethod>()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9678); AnnotateMozCrashReason("MOZ_ASSERT" "(" "propdef->as<LexicalScopeNode>().scopeBody()->is<ClassMethod>()" ")"); do { MOZ_CrashSequence(__null, 9678); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9679 | continue; |
| 9680 | } |
| 9681 | |
| 9682 | // Handle __proto__: v specially because *only* this form, and no other |
| 9683 | // involving "__proto__", performs [[Prototype]] mutation. |
| 9684 | if (propdef->isKind(ParseNodeKind::MutateProto)) { |
| 9685 | // [stack] OBJ |
| 9686 | MOZ_ASSERT(type == ObjectLiteral)do { static_assert( mozilla::detail::AssertionConditionType< decltype(type == ObjectLiteral)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(type == ObjectLiteral))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("type == ObjectLiteral" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9686); AnnotateMozCrashReason("MOZ_ASSERT" "(" "type == ObjectLiteral" ")"); do { MOZ_CrashSequence(__null, 9686); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9687 | if (!pe.prepareForProtoValue(propdef->pn_pos.begin)) { |
| 9688 | // [stack] OBJ |
| 9689 | return false; |
| 9690 | } |
| 9691 | if (!emitTree(propdef->as<UnaryNode>().kid())) { |
| 9692 | // [stack] OBJ PROTO |
| 9693 | return false; |
| 9694 | } |
| 9695 | if (!pe.emitMutateProto()) { |
| 9696 | // [stack] OBJ |
| 9697 | return false; |
| 9698 | } |
| 9699 | continue; |
| 9700 | } |
| 9701 | |
| 9702 | if (propdef->isKind(ParseNodeKind::Spread)) { |
| 9703 | MOZ_ASSERT(type == ObjectLiteral)do { static_assert( mozilla::detail::AssertionConditionType< decltype(type == ObjectLiteral)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(type == ObjectLiteral))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("type == ObjectLiteral" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9703); AnnotateMozCrashReason("MOZ_ASSERT" "(" "type == ObjectLiteral" ")"); do { MOZ_CrashSequence(__null, 9703); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9704 | // [stack] OBJ |
| 9705 | if (!pe.prepareForSpreadOperand(propdef->pn_pos.begin)) { |
| 9706 | // [stack] OBJ OBJ |
| 9707 | return false; |
| 9708 | } |
| 9709 | if (!emitTree(propdef->as<UnaryNode>().kid())) { |
| 9710 | // [stack] OBJ OBJ VAL |
| 9711 | return false; |
| 9712 | } |
| 9713 | if (!pe.emitSpread()) { |
| 9714 | // [stack] OBJ |
| 9715 | return false; |
| 9716 | } |
| 9717 | continue; |
| 9718 | } |
| 9719 | |
| 9720 | BinaryNode* prop = &propdef->as<BinaryNode>(); |
| 9721 | |
| 9722 | ParseNode* key = prop->left(); |
| 9723 | AccessorType accessorType; |
| 9724 | if (prop->is<ClassMethod>()) { |
| 9725 | ClassMethod& method = prop->as<ClassMethod>(); |
| 9726 | accessorType = method.accessorType(); |
| 9727 | |
| 9728 | if (!method.isStatic() && key->isKind(ParseNodeKind::PrivateName) && |
| 9729 | accessorType != AccessorType::None) { |
| 9730 | // Private non-static accessors are stamped onto instances from |
| 9731 | // initializers; see emitCreateMemberInitializers. |
| 9732 | continue; |
| 9733 | } |
| 9734 | } else if (prop->is<PropertyDefinition>()) { |
| 9735 | accessorType = prop->as<PropertyDefinition>().accessorType(); |
| 9736 | } else { |
| 9737 | accessorType = AccessorType::None; |
| 9738 | } |
| 9739 | |
| 9740 | auto emitValue = [this, &key, &prop, accessorType, &pe]() { |
| 9741 | // [stack] CTOR? OBJ CTOR? KEY? |
| 9742 | |
| 9743 | ParseNode* propVal = prop->right(); |
| 9744 | if (propVal->isDirectRHSAnonFunction()) { |
| 9745 | // The following branches except for the last `else` clause emit the |
| 9746 | // cases handled in NameResolver::resolveFun (see NameFunctions.cpp) |
| 9747 | if (key->isKind(ParseNodeKind::ObjectPropertyName) || |
| 9748 | key->isKind(ParseNodeKind::PrivateName) || |
| 9749 | key->isKind(ParseNodeKind::StringExpr)) { |
| 9750 | auto keyAtom = key->as<NameNode>().atom(); |
| 9751 | if (!emitAnonymousFunctionWithName(propVal, keyAtom)) { |
| 9752 | // [stack] CTOR? OBJ CTOR? VAL |
| 9753 | return false; |
| 9754 | } |
| 9755 | } else if (key->isKind(ParseNodeKind::NumberExpr)) { |
| 9756 | MOZ_ASSERT(accessorType == AccessorType::None)do { static_assert( mozilla::detail::AssertionConditionType< decltype(accessorType == AccessorType::None)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(accessorType == AccessorType ::None))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("accessorType == AccessorType::None", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 9756); AnnotateMozCrashReason("MOZ_ASSERT" "(" "accessorType == AccessorType::None" ")"); do { MOZ_CrashSequence(__null, 9756); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9757 | |
| 9758 | auto keyAtom = key->as<NumericLiteral>().toAtom(fc, parserAtoms()); |
| 9759 | if (!keyAtom) { |
| 9760 | return false; |
| 9761 | } |
| 9762 | if (!emitAnonymousFunctionWithName(propVal, keyAtom)) { |
| 9763 | // [stack] CTOR? OBJ CTOR? KEY VAL |
| 9764 | return false; |
| 9765 | } |
| 9766 | } else if (key->isKind(ParseNodeKind::ComputedName) && |
| 9767 | (key->as<UnaryNode>().kid()->isKind( |
| 9768 | ParseNodeKind::NumberExpr) || |
| 9769 | key->as<UnaryNode>().kid()->isKind( |
| 9770 | ParseNodeKind::StringExpr)) && |
| 9771 | accessorType == AccessorType::None) { |
| 9772 | ParseNode* keyKid = key->as<UnaryNode>().kid(); |
| 9773 | if (keyKid->isKind(ParseNodeKind::NumberExpr)) { |
| 9774 | auto keyAtom = |
| 9775 | keyKid->as<NumericLiteral>().toAtom(fc, parserAtoms()); |
| 9776 | if (!keyAtom) { |
| 9777 | return false; |
| 9778 | } |
| 9779 | if (!emitAnonymousFunctionWithName(propVal, keyAtom)) { |
| 9780 | // [stack] CTOR? OBJ CTOR? KEY VAL |
| 9781 | return false; |
| 9782 | } |
| 9783 | } else { |
| 9784 | MOZ_ASSERT(keyKid->isKind(ParseNodeKind::StringExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(keyKid->isKind(ParseNodeKind::StringExpr))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(keyKid->isKind(ParseNodeKind::StringExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("keyKid->isKind(ParseNodeKind::StringExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9784); AnnotateMozCrashReason("MOZ_ASSERT" "(" "keyKid->isKind(ParseNodeKind::StringExpr)" ")"); do { MOZ_CrashSequence(__null, 9784); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9785 | auto keyAtom = keyKid->as<NameNode>().atom(); |
| 9786 | if (!emitAnonymousFunctionWithName(propVal, keyAtom)) { |
| 9787 | // [stack] CTOR? OBJ CTOR? KEY VAL |
| 9788 | return false; |
| 9789 | } |
| 9790 | } |
| 9791 | } else { |
| 9792 | // Either a proper computed property name or a synthetic computed |
| 9793 | // property name for BigInt keys. |
| 9794 | MOZ_ASSERT(key->isKind(ParseNodeKind::ComputedName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::ComputedName))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(key->isKind(ParseNodeKind::ComputedName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::ComputedName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9794); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::ComputedName)" ")"); do { MOZ_CrashSequence(__null, 9794); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9795 | |
| 9796 | FunctionPrefixKind prefix = |
| 9797 | accessorType == AccessorType::None ? FunctionPrefixKind::None |
| 9798 | : accessorType == AccessorType::Getter ? FunctionPrefixKind::Get |
| 9799 | : FunctionPrefixKind::Set; |
| 9800 | |
| 9801 | if (!emitAnonymousFunctionWithComputedName(propVal, prefix)) { |
| 9802 | // [stack] CTOR? OBJ CTOR? KEY VAL |
| 9803 | return false; |
| 9804 | } |
| 9805 | } |
| 9806 | } else { |
| 9807 | if (!emitTree(propVal)) { |
| 9808 | // [stack] CTOR? OBJ CTOR? KEY? VAL |
| 9809 | return false; |
| 9810 | } |
| 9811 | } |
| 9812 | |
| 9813 | if (propVal->is<FunctionNode>() && |
| 9814 | propVal->as<FunctionNode>().funbox()->needsHomeObject()) { |
| 9815 | if (!pe.emitInitHomeObject()) { |
| 9816 | // [stack] CTOR? OBJ CTOR? KEY? FUN |
| 9817 | return false; |
| 9818 | } |
| 9819 | } |
| 9820 | |
| 9821 | #ifdef ENABLE_DECORATORS |
| 9822 | if (prop->is<ClassMethod>()) { |
| 9823 | ClassMethod& method = prop->as<ClassMethod>(); |
| 9824 | if (method.decorators() && !method.decorators()->empty()) { |
| 9825 | DecoratorEmitter::Kind kind; |
| 9826 | switch (method.accessorType()) { |
| 9827 | case AccessorType::Getter: |
| 9828 | kind = DecoratorEmitter::Getter; |
| 9829 | break; |
| 9830 | case AccessorType::Setter: |
| 9831 | kind = DecoratorEmitter::Setter; |
| 9832 | break; |
| 9833 | case AccessorType::None: |
| 9834 | kind = DecoratorEmitter::Method; |
| 9835 | break; |
| 9836 | } |
| 9837 | |
| 9838 | if (!method.isStatic()) { |
| 9839 | bool hasKeyOnStack = key->isKind(ParseNodeKind::NumberExpr) || |
| 9840 | key->isKind(ParseNodeKind::ComputedName); |
| 9841 | if (!emitDupAt(hasKeyOnStack ? 4 : 3)) { |
| 9842 | // [stack] ADDINIT OBJ KEY? VAL ADDINIT |
| 9843 | return false; |
| 9844 | } |
| 9845 | } else { |
| 9846 | // TODO: See bug 1868220 for support for static methods. |
| 9847 | // Note: Key will be present if this has a private name. |
| 9848 | if (!emit1(JSOp::Undefined)) { |
| 9849 | // [stack] CTOR OBJ CTOR KEY? VAL ADDINIT |
| 9850 | return false; |
| 9851 | } |
| 9852 | } |
| 9853 | |
| 9854 | if (!emit1(JSOp::Swap)) { |
| 9855 | // [stack] ADDINIT CTOR? OBJ CTOR? KEY? ADDINIT VAL |
| 9856 | return false; |
| 9857 | } |
| 9858 | |
| 9859 | // The decorators are applied to the current value on the stack, |
| 9860 | // possibly replacing it. |
| 9861 | DecoratorEmitter de(this); |
| 9862 | if (!de.emitApplyDecoratorsToElementDefinition( |
| 9863 | kind, key, method.decorators(), method.isStatic())) { |
| 9864 | // [stack] ADDINIT CTOR? OBJ CTOR? KEY? ADDINIT VAL |
| 9865 | return false; |
| 9866 | } |
| 9867 | |
| 9868 | if (!emit1(JSOp::Swap)) { |
| 9869 | // [stack] ADDINIT CTOR? OBJ CTOR? KEY? VAL ADDINIT |
| 9870 | return false; |
| 9871 | } |
| 9872 | |
| 9873 | if (!emitPopN(1)) { |
| 9874 | // [stack] ADDINIT CTOR? OBJ CTOR? KEY? VAL |
| 9875 | return false; |
| 9876 | } |
| 9877 | } |
| 9878 | } |
| 9879 | #endif |
| 9880 | |
| 9881 | return true; |
| 9882 | }; |
| 9883 | |
| 9884 | PropertyEmitter::Kind kind = |
| 9885 | (type == ClassBody && propdef->as<ClassMethod>().isStatic()) |
| 9886 | ? PropertyEmitter::Kind::Static |
| 9887 | : PropertyEmitter::Kind::Prototype; |
| 9888 | if (key->isKind(ParseNodeKind::ObjectPropertyName) || |
| 9889 | key->isKind(ParseNodeKind::StringExpr)) { |
| 9890 | // [stack] CTOR? OBJ |
| 9891 | |
| 9892 | auto keyAtom = key->as<NameNode>().atom(); |
| 9893 | |
| 9894 | // emitClass took care of constructor already. |
| 9895 | if (type == ClassBody && |
| 9896 | keyAtom == TaggedParserAtomIndex::WellKnown::constructor() && |
| 9897 | !propdef->as<ClassMethod>().isStatic()) { |
| 9898 | continue; |
| 9899 | } |
| 9900 | |
| 9901 | if (!pe.prepareForPropValue(propdef->pn_pos.begin, kind)) { |
| 9902 | // [stack] CTOR? OBJ CTOR? |
| 9903 | return false; |
| 9904 | } |
| 9905 | |
| 9906 | if (!emitValue()) { |
| 9907 | // [stack] CTOR? OBJ CTOR? VAL |
| 9908 | return false; |
| 9909 | } |
| 9910 | |
| 9911 | if (!pe.emitInit(accessorType, keyAtom)) { |
| 9912 | // [stack] CTOR? OBJ |
| 9913 | return false; |
| 9914 | } |
| 9915 | |
| 9916 | continue; |
| 9917 | } |
| 9918 | |
| 9919 | if (key->isKind(ParseNodeKind::NumberExpr)) { |
| 9920 | // [stack] CTOR? OBJ |
| 9921 | if (!pe.prepareForIndexPropKey(propdef->pn_pos.begin, kind)) { |
| 9922 | // [stack] CTOR? OBJ CTOR? |
| 9923 | return false; |
| 9924 | } |
| 9925 | if (!emitNumberOp(key->as<NumericLiteral>().value())) { |
| 9926 | // [stack] CTOR? OBJ CTOR? KEY |
| 9927 | return false; |
| 9928 | } |
| 9929 | if (!pe.prepareForIndexPropValue()) { |
| 9930 | // [stack] CTOR? OBJ CTOR? KEY |
| 9931 | return false; |
| 9932 | } |
| 9933 | if (!emitValue()) { |
| 9934 | // [stack] CTOR? OBJ CTOR? KEY VAL |
| 9935 | return false; |
| 9936 | } |
| 9937 | |
| 9938 | if (!pe.emitInitIndexOrComputed(accessorType)) { |
| 9939 | // [stack] CTOR? OBJ |
| 9940 | return false; |
| 9941 | } |
| 9942 | |
| 9943 | continue; |
| 9944 | } |
| 9945 | |
| 9946 | if (key->isKind(ParseNodeKind::ComputedName)) { |
| 9947 | // Either a proper computed property name or a synthetic computed property |
| 9948 | // name for BigInt keys. |
| 9949 | |
| 9950 | // [stack] CTOR? OBJ |
| 9951 | |
| 9952 | if (!pe.prepareForComputedPropKey(propdef->pn_pos.begin, kind)) { |
| 9953 | // [stack] CTOR? OBJ CTOR? |
| 9954 | return false; |
| 9955 | } |
| 9956 | if (!emitTree(key->as<UnaryNode>().kid())) { |
| 9957 | // [stack] CTOR? OBJ CTOR? KEY |
| 9958 | return false; |
| 9959 | } |
| 9960 | if (!pe.prepareForComputedPropValue()) { |
| 9961 | // [stack] CTOR? OBJ CTOR? KEY |
| 9962 | return false; |
| 9963 | } |
| 9964 | if (!emitValue()) { |
| 9965 | // [stack] CTOR? OBJ CTOR? KEY VAL |
| 9966 | return false; |
| 9967 | } |
| 9968 | |
| 9969 | if (!pe.emitInitIndexOrComputed(accessorType)) { |
| 9970 | // [stack] CTOR? OBJ |
| 9971 | return false; |
| 9972 | } |
| 9973 | |
| 9974 | continue; |
| 9975 | } |
| 9976 | |
| 9977 | MOZ_ASSERT(key->isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(key->isKind(ParseNodeKind::PrivateName))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(key->isKind(ParseNodeKind::PrivateName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("key->isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9977); AnnotateMozCrashReason("MOZ_ASSERT" "(" "key->isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 9977); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9978 | MOZ_ASSERT(type == ClassBody)do { static_assert( mozilla::detail::AssertionConditionType< decltype(type == ClassBody)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(type == ClassBody))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("type == ClassBody" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9978); AnnotateMozCrashReason("MOZ_ASSERT" "(" "type == ClassBody" ")" ); do { MOZ_CrashSequence(__null, 9978); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9979 | |
| 9980 | auto* privateName = &key->as<NameNode>(); |
| 9981 | |
| 9982 | if (kind == PropertyEmitter::Kind::Prototype) { |
| 9983 | MOZ_ASSERT(accessorType == AccessorType::None)do { static_assert( mozilla::detail::AssertionConditionType< decltype(accessorType == AccessorType::None)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(accessorType == AccessorType ::None))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("accessorType == AccessorType::None", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 9983); AnnotateMozCrashReason("MOZ_ASSERT" "(" "accessorType == AccessorType::None" ")"); do { MOZ_CrashSequence(__null, 9983); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9984 | if (!pe.prepareForPrivateMethod()) { |
| 9985 | // [stack] CTOR OBJ |
| 9986 | return false; |
| 9987 | } |
| 9988 | NameOpEmitter noe(this, privateName->atom(), |
| 9989 | NameOpEmitter::Kind::SimpleAssignment); |
| 9990 | |
| 9991 | // Ensure the NameOp emitter doesn't push an environment onto the stack, |
| 9992 | // because that would change the stack location of the home object. |
| 9993 | MOZ_ASSERT(noe.loc().kind() == NameLocation::Kind::FrameSlot ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(noe.loc().kind() == NameLocation::Kind::FrameSlot || noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(noe.loc().kind() == NameLocation::Kind::FrameSlot || noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "noe.loc().kind() == NameLocation::Kind::FrameSlot || noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9994); AnnotateMozCrashReason("MOZ_ASSERT" "(" "noe.loc().kind() == NameLocation::Kind::FrameSlot || noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate" ")"); do { MOZ_CrashSequence(__null, 9994); __attribute__((nomerge )) ::abort(); } while (false); } } while (false) |
| 9994 | noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate)do { static_assert( mozilla::detail::AssertionConditionType< decltype(noe.loc().kind() == NameLocation::Kind::FrameSlot || noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(noe.loc().kind() == NameLocation::Kind::FrameSlot || noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "noe.loc().kind() == NameLocation::Kind::FrameSlot || noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 9994); AnnotateMozCrashReason("MOZ_ASSERT" "(" "noe.loc().kind() == NameLocation::Kind::FrameSlot || noe.loc().kind() == NameLocation::Kind::EnvironmentCoordinate" ")"); do { MOZ_CrashSequence(__null, 9994); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 9995 | |
| 9996 | if (!noe.prepareForRhs()) { |
| 9997 | // [stack] CTOR OBJ |
| 9998 | return false; |
| 9999 | } |
| 10000 | if (!emitValue()) { |
| 10001 | // [stack] CTOR OBJ METHOD |
| 10002 | return false; |
| 10003 | } |
| 10004 | if (!noe.emitAssignment()) { |
| 10005 | // [stack] CTOR OBJ METHOD |
| 10006 | return false; |
| 10007 | } |
| 10008 | if (!emit1(JSOp::Pop)) { |
| 10009 | // [stack] CTOR OBJ |
| 10010 | return false; |
| 10011 | } |
| 10012 | if (!pe.skipInit()) { |
| 10013 | // [stack] CTOR OBJ |
| 10014 | return false; |
| 10015 | } |
| 10016 | continue; |
| 10017 | } |
| 10018 | |
| 10019 | MOZ_ASSERT(kind == PropertyEmitter::Kind::Static)do { static_assert( mozilla::detail::AssertionConditionType< decltype(kind == PropertyEmitter::Kind::Static)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(kind == PropertyEmitter::Kind::Static))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("kind == PropertyEmitter::Kind::Static" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10019) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "kind == PropertyEmitter::Kind::Static" ")"); do { MOZ_CrashSequence(__null, 10019); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10020 | |
| 10021 | // [stack] CTOR OBJ |
| 10022 | |
| 10023 | if (!pe.prepareForPrivateStaticMethod(propdef->pn_pos.begin)) { |
| 10024 | // [stack] CTOR OBJ CTOR |
| 10025 | return false; |
| 10026 | } |
| 10027 | if (!emitGetPrivateName(privateName)) { |
| 10028 | // [stack] CTOR OBJ CTOR KEY |
| 10029 | return false; |
| 10030 | } |
| 10031 | if (!emitValue()) { |
| 10032 | // [stack] CTOR OBJ CTOR KEY VAL |
| 10033 | return false; |
| 10034 | } |
| 10035 | |
| 10036 | if (!pe.emitPrivateStaticMethod(accessorType)) { |
| 10037 | // [stack] CTOR OBJ |
| 10038 | return false; |
| 10039 | } |
| 10040 | |
| 10041 | if (privateName->privateNameKind() == PrivateNameKind::Setter) { |
| 10042 | if (!emitDupAt(1)) { |
| 10043 | // [stack] CTOR OBJ CTOR |
| 10044 | return false; |
| 10045 | } |
| 10046 | if (!emitGetPrivateName(privateName)) { |
| 10047 | // [stack] CTOR OBJ CTOR NAME |
| 10048 | return false; |
| 10049 | } |
| 10050 | if (!emitAtomOp(JSOp::GetIntrinsic, |
| 10051 | TaggedParserAtomIndex::WellKnown::NoPrivateGetter())) { |
| 10052 | // [stack] CTOR OBJ CTOR NAME FUN |
| 10053 | return false; |
| 10054 | } |
| 10055 | if (!emit1(JSOp::InitHiddenElemGetter)) { |
| 10056 | // [stack] CTOR OBJ CTOR |
| 10057 | return false; |
| 10058 | } |
| 10059 | if (!emit1(JSOp::Pop)) { |
| 10060 | // [stack] CTOR OBJ |
| 10061 | return false; |
| 10062 | } |
| 10063 | } |
| 10064 | } |
| 10065 | |
| 10066 | return true; |
| 10067 | } |
| 10068 | |
| 10069 | bool BytecodeEmitter::emitPropertyListObjLiteral(ListNode* obj, JSOp op, |
| 10070 | bool useObjLiteralValues) { |
| 10071 | ObjLiteralWriter writer; |
| 10072 | |
| 10073 | #ifdef DEBUG1 |
| 10074 | // In self-hosted JS, we check duplication only on debug build. |
| 10075 | mozilla::Maybe<mozilla::HashSet<frontend::TaggedParserAtomIndex, |
| 10076 | frontend::TaggedParserAtomIndexHasher>> |
| 10077 | selfHostedPropNames; |
| 10078 | if (emitterMode == BytecodeEmitter::SelfHosting) { |
| 10079 | selfHostedPropNames.emplace(); |
| 10080 | } |
| 10081 | #endif |
| 10082 | |
| 10083 | if (op == JSOp::Object) { |
| 10084 | writer.beginObject(op); |
| 10085 | } else { |
| 10086 | MOZ_ASSERT(op == JSOp::NewObject)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::NewObject)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::NewObject))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::NewObject" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10086) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::NewObject" ")"); do { MOZ_CrashSequence(__null, 10086); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10087 | writer.beginShape(op); |
| 10088 | } |
| 10089 | |
| 10090 | for (ParseNode* propdef : obj->contents()) { |
| 10091 | BinaryNode* prop = &propdef->as<BinaryNode>(); |
| 10092 | ParseNode* key = prop->left(); |
| 10093 | |
| 10094 | if (key->is<NameNode>()) { |
| 10095 | if (emitterMode == BytecodeEmitter::SelfHosting) { |
| 10096 | auto propName = key->as<NameNode>().atom(); |
| 10097 | #ifdef DEBUG1 |
| 10098 | // Self-hosted JS shouldn't contain duplicate properties. |
| 10099 | auto p = selfHostedPropNames->lookupForAdd(propName); |
| 10100 | MOZ_ASSERT(!p)do { static_assert( mozilla::detail::AssertionConditionType< decltype(!p)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(!p))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("!p", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 10100); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!p" ")"); do { MOZ_CrashSequence(__null, 10100); __attribute__((nomerge)) ::abort(); } while (false); } } while (false); |
| 10101 | if (!selfHostedPropNames->add(p, propName)) { |
| 10102 | js::ReportOutOfMemory(fc); |
| 10103 | return false; |
| 10104 | } |
| 10105 | #endif |
| 10106 | writer.setPropNameNoDuplicateCheck(parserAtoms(), propName); |
| 10107 | } else { |
| 10108 | if (!writer.setPropName(parserAtoms(), key->as<NameNode>().atom())) { |
| 10109 | return false; |
| 10110 | } |
| 10111 | } |
| 10112 | } else { |
| 10113 | double numValue = key->as<NumericLiteral>().value(); |
| 10114 | int32_t i = 0; |
| 10115 | DebugOnly<bool> numIsInt = |
| 10116 | NumberIsInt32(numValue, &i); // checked previously. |
| 10117 | MOZ_ASSERT(numIsInt)do { static_assert( mozilla::detail::AssertionConditionType< decltype(numIsInt)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(numIsInt))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("numIsInt", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 10117); AnnotateMozCrashReason("MOZ_ASSERT" "(" "numIsInt" ")" ); do { MOZ_CrashSequence(__null, 10117); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 10118 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(ObjLiteralWriter::arrayIndexInRange(i))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(ObjLiteralWriter::arrayIndexInRange(i)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("ObjLiteralWriter::arrayIndexInRange(i)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10119) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "ObjLiteralWriter::arrayIndexInRange(i)" ")"); do { MOZ_CrashSequence(__null, 10119); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 10119 | ObjLiteralWriter::arrayIndexInRange(i))do { static_assert( mozilla::detail::AssertionConditionType< decltype(ObjLiteralWriter::arrayIndexInRange(i))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(ObjLiteralWriter::arrayIndexInRange(i)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("ObjLiteralWriter::arrayIndexInRange(i)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10119) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "ObjLiteralWriter::arrayIndexInRange(i)" ")"); do { MOZ_CrashSequence(__null, 10119); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); // checked previously. |
| 10120 | |
| 10121 | // Ignore indexed properties if we're not storing property values, and |
| 10122 | // rely on InitElem ops to define those. These properties will be either |
| 10123 | // dense elements (not possible to represent in the literal's shape) or |
| 10124 | // sparse elements (enumerated separately, so this doesn't affect property |
| 10125 | // iteration order). |
| 10126 | if (!useObjLiteralValues) { |
| 10127 | continue; |
| 10128 | } |
| 10129 | |
| 10130 | writer.setPropIndex(i); |
| 10131 | } |
| 10132 | |
| 10133 | if (useObjLiteralValues) { |
| 10134 | MOZ_ASSERT(op == JSOp::Object)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::Object)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(op == JSOp::Object))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::Object" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10134) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::Object" ")"); do { MOZ_CrashSequence(__null, 10134); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10135 | ParseNode* value = prop->right(); |
| 10136 | if (!emitObjLiteralValue(writer, value)) { |
| 10137 | return false; |
| 10138 | } |
| 10139 | } else { |
| 10140 | if (!writer.propWithUndefinedValue(fc)) { |
| 10141 | return false; |
| 10142 | } |
| 10143 | } |
| 10144 | } |
| 10145 | |
| 10146 | GCThingIndex index; |
| 10147 | if (!addObjLiteralData(writer, &index)) { |
| 10148 | return false; |
| 10149 | } |
| 10150 | |
| 10151 | // JSOp::Object may only be used by (top-level) run-once scripts. |
| 10152 | MOZ_ASSERT_IF(op == JSOp::Object,do { if (op == JSOp::Object) { do { static_assert( mozilla::detail ::AssertionConditionType<decltype(sc->isTopLevelContext () && sc->treatAsRunOnce())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isTopLevelContext() && sc->treatAsRunOnce()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("sc->isTopLevelContext() && sc->treatAsRunOnce()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10153) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isTopLevelContext() && sc->treatAsRunOnce()" ")"); do { MOZ_CrashSequence(__null, 10153); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); } } while (false) |
| 10153 | sc->isTopLevelContext() && sc->treatAsRunOnce())do { if (op == JSOp::Object) { do { static_assert( mozilla::detail ::AssertionConditionType<decltype(sc->isTopLevelContext () && sc->treatAsRunOnce())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isTopLevelContext() && sc->treatAsRunOnce()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("sc->isTopLevelContext() && sc->treatAsRunOnce()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10153) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isTopLevelContext() && sc->treatAsRunOnce()" ")"); do { MOZ_CrashSequence(__null, 10153); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); } } while (false); |
| 10154 | |
| 10155 | if (!emitGCIndexOp(op, index)) { |
| 10156 | // [stack] OBJ |
| 10157 | return false; |
| 10158 | } |
| 10159 | |
| 10160 | return true; |
| 10161 | } |
| 10162 | |
| 10163 | bool BytecodeEmitter::emitDestructuringRestExclusionSetObjLiteral( |
| 10164 | ListNode* pattern) { |
| 10165 | // Note: if we want to squeeze out a little more performance, we could switch |
| 10166 | // to the `JSOp::Object` opcode, because the exclusion set object is never |
| 10167 | // exposed to the user, so it's safe to bake the object into the bytecode. |
| 10168 | constexpr JSOp op = JSOp::NewObject; |
| 10169 | |
| 10170 | ObjLiteralWriter writer; |
| 10171 | writer.beginShape(op); |
| 10172 | |
| 10173 | for (ParseNode* member : pattern->contents()) { |
| 10174 | if (member->isKind(ParseNodeKind::Spread)) { |
| 10175 | MOZ_ASSERT(!member->pn_next, "unexpected trailing element after spread")do { static_assert( mozilla::detail::AssertionConditionType< decltype(!member->pn_next)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!member->pn_next))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!member->pn_next" " (" "unexpected trailing element after spread" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 10175); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!member->pn_next" ") (" "unexpected trailing element after spread" ")"); do { MOZ_CrashSequence (__null, 10175); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 10176 | break; |
| 10177 | } |
| 10178 | |
| 10179 | TaggedParserAtomIndex atom; |
| 10180 | if (member->isKind(ParseNodeKind::MutateProto)) { |
| 10181 | atom = TaggedParserAtomIndex::WellKnown::proto_(); |
| 10182 | } else { |
| 10183 | ParseNode* key = member->as<BinaryNode>().left(); |
| 10184 | atom = key->as<NameNode>().atom(); |
| 10185 | } |
| 10186 | |
| 10187 | if (!writer.setPropName(parserAtoms(), atom)) { |
| 10188 | return false; |
| 10189 | } |
| 10190 | |
| 10191 | if (!writer.propWithUndefinedValue(fc)) { |
| 10192 | return false; |
| 10193 | } |
| 10194 | } |
| 10195 | |
| 10196 | GCThingIndex index; |
| 10197 | if (!addObjLiteralData(writer, &index)) { |
| 10198 | return false; |
| 10199 | } |
| 10200 | |
| 10201 | if (!emitGCIndexOp(op, index)) { |
| 10202 | // [stack] OBJ |
| 10203 | return false; |
| 10204 | } |
| 10205 | |
| 10206 | return true; |
| 10207 | } |
| 10208 | |
| 10209 | bool BytecodeEmitter::emitObjLiteralArray(ListNode* array) { |
| 10210 | MOZ_ASSERT(checkSingletonContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(checkSingletonContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(checkSingletonContext()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("checkSingletonContext()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10210) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "checkSingletonContext()" ")"); do { MOZ_CrashSequence(__null, 10210); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10211 | |
| 10212 | constexpr JSOp op = JSOp::Object; |
| 10213 | |
| 10214 | ObjLiteralWriter writer; |
| 10215 | writer.beginArray(op); |
| 10216 | |
| 10217 | writer.beginDenseArrayElements(); |
| 10218 | for (ParseNode* elem : array->contents()) { |
| 10219 | if (!emitObjLiteralValue(writer, elem)) { |
| 10220 | return false; |
| 10221 | } |
| 10222 | } |
| 10223 | |
| 10224 | GCThingIndex index; |
| 10225 | if (!addObjLiteralData(writer, &index)) { |
| 10226 | return false; |
| 10227 | } |
| 10228 | |
| 10229 | if (!emitGCIndexOp(op, index)) { |
| 10230 | // [stack] OBJ |
| 10231 | return false; |
| 10232 | } |
| 10233 | |
| 10234 | return true; |
| 10235 | } |
| 10236 | |
| 10237 | bool BytecodeEmitter::isRHSObjLiteralCompatible(ParseNode* value) const { |
| 10238 | return value->isKind(ParseNodeKind::NumberExpr) || |
| 10239 | value->isKind(ParseNodeKind::TrueExpr) || |
| 10240 | value->isKind(ParseNodeKind::FalseExpr) || |
| 10241 | value->isKind(ParseNodeKind::NullExpr) || |
| 10242 | value->isKind(ParseNodeKind::RawUndefinedExpr) || |
| 10243 | value->isKind(ParseNodeKind::StringExpr) || |
| 10244 | value->isKind(ParseNodeKind::TemplateStringExpr); |
| 10245 | } |
| 10246 | |
| 10247 | bool BytecodeEmitter::emitObjLiteralValue(ObjLiteralWriter& writer, |
| 10248 | ParseNode* value) { |
| 10249 | MOZ_ASSERT(isRHSObjLiteralCompatible(value))do { static_assert( mozilla::detail::AssertionConditionType< decltype(isRHSObjLiteralCompatible(value))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(isRHSObjLiteralCompatible(value )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("isRHSObjLiteralCompatible(value)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 10249); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isRHSObjLiteralCompatible(value)" ")"); do { MOZ_CrashSequence(__null, 10249); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10250 | if (value->isKind(ParseNodeKind::NumberExpr)) { |
| 10251 | double numValue = value->as<NumericLiteral>().value(); |
| 10252 | int32_t i = 0; |
| 10253 | js::Value v; |
| 10254 | if (NumberIsInt32(numValue, &i)) { |
| 10255 | v.setInt32(i); |
| 10256 | } else { |
| 10257 | v.setDouble(numValue); |
| 10258 | } |
| 10259 | if (!writer.propWithConstNumericValue(fc, v)) { |
| 10260 | return false; |
| 10261 | } |
| 10262 | } else if (value->isKind(ParseNodeKind::TrueExpr)) { |
| 10263 | if (!writer.propWithTrueValue(fc)) { |
| 10264 | return false; |
| 10265 | } |
| 10266 | } else if (value->isKind(ParseNodeKind::FalseExpr)) { |
| 10267 | if (!writer.propWithFalseValue(fc)) { |
| 10268 | return false; |
| 10269 | } |
| 10270 | } else if (value->isKind(ParseNodeKind::NullExpr)) { |
| 10271 | if (!writer.propWithNullValue(fc)) { |
| 10272 | return false; |
| 10273 | } |
| 10274 | } else if (value->isKind(ParseNodeKind::RawUndefinedExpr)) { |
| 10275 | if (!writer.propWithUndefinedValue(fc)) { |
| 10276 | return false; |
| 10277 | } |
| 10278 | } else if (value->isKind(ParseNodeKind::StringExpr) || |
| 10279 | value->isKind(ParseNodeKind::TemplateStringExpr)) { |
| 10280 | if (!writer.propWithAtomValue(fc, parserAtoms(), |
| 10281 | value->as<NameNode>().atom())) { |
| 10282 | return false; |
| 10283 | } |
| 10284 | } else { |
| 10285 | MOZ_CRASH("Unexpected parse node")do { do { } while (false); MOZ_ReportCrash("" "Unexpected parse node" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10285) ; AnnotateMozCrashReason("MOZ_CRASH(" "Unexpected parse node" ")"); do { MOZ_CrashSequence(__null, 10285); __attribute__(( nomerge)) ::abort(); } while (false); } while (false); |
| 10286 | } |
| 10287 | return true; |
| 10288 | } |
| 10289 | |
| 10290 | static bool NeedsPrivateBrand(ParseNode* member) { |
| 10291 | return member->is<ClassMethod>() && |
| 10292 | member->as<ClassMethod>().name().isKind(ParseNodeKind::PrivateName) && |
| 10293 | !member->as<ClassMethod>().isStatic(); |
| 10294 | } |
| 10295 | |
| 10296 | #ifdef ENABLE_DECORATORS |
| 10297 | static bool HasDecorators(ParseNode* member) { |
| 10298 | return member->is<ClassMethod>() && member->as<ClassMethod>().decorators(); |
| 10299 | } |
| 10300 | #endif |
| 10301 | |
| 10302 | mozilla::Maybe<MemberInitializers> BytecodeEmitter::setupMemberInitializers( |
| 10303 | ListNode* classMembers, FieldPlacement placement) const { |
| 10304 | bool isStatic = placement == FieldPlacement::Static; |
| 10305 | |
| 10306 | size_t numFields = 0; |
| 10307 | size_t numPrivateInitializers = 0; |
| 10308 | bool hasPrivateBrand = false; |
| 10309 | #ifdef ENABLE_DECORATORS |
| 10310 | bool hasDecorators = false; |
| 10311 | #endif |
| 10312 | for (ParseNode* member : classMembers->contents()) { |
| 10313 | if (NeedsFieldInitializer(member, isStatic)) { |
| 10314 | numFields++; |
| 10315 | } else if (NeedsAccessorInitializer(member, isStatic)) { |
| 10316 | numPrivateInitializers++; |
| 10317 | hasPrivateBrand = true; |
| 10318 | } else if (NeedsPrivateBrand(member)) { |
| 10319 | hasPrivateBrand = true; |
| 10320 | } |
| 10321 | #ifdef ENABLE_DECORATORS |
| 10322 | if (!hasDecorators && HasDecorators(member)) { |
| 10323 | hasDecorators = true; |
| 10324 | } |
| 10325 | #endif |
| 10326 | } |
| 10327 | |
| 10328 | // If there are more initializers than can be represented, return invalid. |
| 10329 | if (numFields + numPrivateInitializers > |
| 10330 | MemberInitializers::MaxInitializers) { |
| 10331 | return Nothing(); |
| 10332 | } |
| 10333 | return Some(MemberInitializers(hasPrivateBrand, |
| 10334 | #ifdef ENABLE_DECORATORS |
| 10335 | hasDecorators, |
| 10336 | #endif |
| 10337 | numFields + numPrivateInitializers)); |
| 10338 | } |
| 10339 | |
| 10340 | // Purpose of .fieldKeys: |
| 10341 | // Computed field names (`["x"] = 2;`) must be ran at class-evaluation time, |
| 10342 | // not object construction time. The transformation to do so is roughly as |
| 10343 | // follows: |
| 10344 | // |
| 10345 | // class C { |
| 10346 | // [keyExpr] = valueExpr; |
| 10347 | // } |
| 10348 | // --> |
| 10349 | // let .fieldKeys = [keyExpr]; |
| 10350 | // let .initializers = [ |
| 10351 | // () => { |
| 10352 | // this[.fieldKeys[0]] = valueExpr; |
| 10353 | // } |
| 10354 | // ]; |
| 10355 | // class C { |
| 10356 | // constructor() { |
| 10357 | // .initializers[0](); |
| 10358 | // } |
| 10359 | // } |
| 10360 | // |
| 10361 | // BytecodeEmitter::emitCreateFieldKeys does `let .fieldKeys = [...];` |
| 10362 | // BytecodeEmitter::emitPropertyList fills in the elements of the array. |
| 10363 | // See GeneralParser::fieldInitializer for the `this[.fieldKeys[0]]` part. |
| 10364 | bool BytecodeEmitter::emitCreateFieldKeys(ListNode* obj, |
| 10365 | FieldPlacement placement) { |
| 10366 | bool isStatic = placement == FieldPlacement::Static; |
| 10367 | auto isFieldWithComputedName = [isStatic](ParseNode* propdef) { |
| 10368 | return propdef->is<ClassField>() && |
| 10369 | propdef->as<ClassField>().isStatic() == isStatic && |
| 10370 | propdef->as<ClassField>().name().getKind() == |
| 10371 | ParseNodeKind::ComputedName; |
| 10372 | }; |
| 10373 | |
| 10374 | size_t numFieldKeys = std::count_if( |
| 10375 | obj->contents().begin(), obj->contents().end(), isFieldWithComputedName); |
| 10376 | if (numFieldKeys == 0) { |
| 10377 | return true; |
| 10378 | } |
| 10379 | |
| 10380 | auto fieldKeys = |
| 10381 | isStatic ? TaggedParserAtomIndex::WellKnown::dot_staticFieldKeys_() |
| 10382 | : TaggedParserAtomIndex::WellKnown::dot_fieldKeys_(); |
| 10383 | NameOpEmitter noe(this, fieldKeys, NameOpEmitter::Kind::Initialize); |
| 10384 | if (!noe.prepareForRhs()) { |
| 10385 | return false; |
| 10386 | } |
| 10387 | |
| 10388 | if (!emitUint32Operand(JSOp::NewArray, numFieldKeys)) { |
| 10389 | // [stack] ARRAY |
| 10390 | return false; |
| 10391 | } |
| 10392 | |
| 10393 | if (!noe.emitAssignment()) { |
| 10394 | // [stack] ARRAY |
| 10395 | return false; |
| 10396 | } |
| 10397 | |
| 10398 | if (!emit1(JSOp::Pop)) { |
| 10399 | // [stack] |
| 10400 | return false; |
| 10401 | } |
| 10402 | |
| 10403 | return true; |
| 10404 | } |
| 10405 | |
| 10406 | static bool HasInitializer(ParseNode* node, bool isStaticContext) { |
| 10407 | return (node->is<ClassField>() && |
| 10408 | node->as<ClassField>().isStatic() == isStaticContext) || |
| 10409 | (isStaticContext && node->is<StaticClassBlock>()); |
| 10410 | } |
| 10411 | |
| 10412 | static FunctionNode* GetInitializer(ParseNode* node, bool isStaticContext) { |
| 10413 | MOZ_ASSERT(HasInitializer(node, isStaticContext))do { static_assert( mozilla::detail::AssertionConditionType< decltype(HasInitializer(node, isStaticContext))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(HasInitializer(node, isStaticContext)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("HasInitializer(node, isStaticContext)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10413) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "HasInitializer(node, isStaticContext)" ")"); do { MOZ_CrashSequence(__null, 10413); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10414 | MOZ_ASSERT_IF(!node->is<ClassField>(), isStaticContext)do { if (!node->is<ClassField>()) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(isStaticContext )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(isStaticContext))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("isStaticContext", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 10414); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isStaticContext" ")"); do { MOZ_CrashSequence(__null, 10414); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); } } while (false); |
| 10415 | return node->is<ClassField>() ? node->as<ClassField>().initializer() |
| 10416 | : node->as<StaticClassBlock>().function(); |
| 10417 | } |
| 10418 | |
| 10419 | static bool IsPrivateInstanceAccessor(const ClassMethod* classMethod) { |
| 10420 | return !classMethod->isStatic() && |
| 10421 | classMethod->name().isKind(ParseNodeKind::PrivateName) && |
| 10422 | classMethod->accessorType() != AccessorType::None; |
| 10423 | } |
| 10424 | |
| 10425 | bool BytecodeEmitter::emitCreateMemberInitializers(ClassEmitter& ce, |
| 10426 | ListNode* obj, |
| 10427 | FieldPlacement placement |
| 10428 | #ifdef ENABLE_DECORATORS |
| 10429 | , |
| 10430 | bool hasHeritage |
| 10431 | #endif |
| 10432 | ) { |
| 10433 | // FieldPlacement::Instance, hasHeritage == false |
| 10434 | // [stack] HOME |
| 10435 | // |
| 10436 | // FieldPlacement::Instance, hasHeritage == true |
| 10437 | // [stack] HOME HERIT |
| 10438 | // |
| 10439 | // FieldPlacement::Static |
| 10440 | // [stack] CTOR HOME |
| 10441 | #ifdef ENABLE_DECORATORS |
| 10442 | MOZ_ASSERT_IF(placement == FieldPlacement::Static, !hasHeritage)do { if (placement == FieldPlacement::Static) { do { static_assert ( mozilla::detail::AssertionConditionType<decltype(!hasHeritage )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!hasHeritage))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!hasHeritage", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 10442); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!hasHeritage" ")"); do { MOZ_CrashSequence(__null, 10442); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); } } while (false); |
| 10443 | #endif |
| 10444 | mozilla::Maybe<MemberInitializers> memberInitializers = |
| 10445 | setupMemberInitializers(obj, placement); |
| 10446 | if (!memberInitializers) { |
| 10447 | ReportAllocationOverflow(fc); |
| 10448 | return false; |
| 10449 | } |
| 10450 | |
| 10451 | size_t numInitializers = memberInitializers->numMemberInitializers; |
| 10452 | if (numInitializers == 0) { |
| 10453 | return true; |
| 10454 | } |
| 10455 | |
| 10456 | bool isStatic = placement == FieldPlacement::Static; |
| 10457 | if (!ce.prepareForMemberInitializers(numInitializers, isStatic)) { |
| 10458 | // [stack] HOME HERIT? ARR |
| 10459 | // or: |
| 10460 | // [stack] CTOR HOME ARR |
| 10461 | return false; |
| 10462 | } |
| 10463 | |
| 10464 | // Private accessors could be used in the field initializers, so make sure |
| 10465 | // accessor initializers appear earlier in the .initializers array so they |
| 10466 | // run first. Static private methods are not initialized using initializers |
| 10467 | // (emitPropertyList emits bytecode to stamp them onto the constructor), so |
| 10468 | // skip this step if isStatic. |
| 10469 | if (!isStatic) { |
| 10470 | if (!emitPrivateMethodInitializers(ce, obj)) { |
| 10471 | return false; |
| 10472 | } |
| 10473 | } |
| 10474 | |
| 10475 | for (ParseNode* propdef : obj->contents()) { |
| 10476 | if (!HasInitializer(propdef, isStatic)) { |
| 10477 | continue; |
| 10478 | } |
| 10479 | |
| 10480 | FunctionNode* initializer = GetInitializer(propdef, isStatic); |
| 10481 | |
| 10482 | if (!ce.prepareForMemberInitializer()) { |
| 10483 | return false; |
| 10484 | } |
| 10485 | if (!emitTree(initializer)) { |
| 10486 | // [stack] HOME HERIT? ARR LAMBDA |
| 10487 | // or: |
| 10488 | // [stack] CTOR HOME ARR LAMBDA |
| 10489 | return false; |
| 10490 | } |
| 10491 | if (initializer->funbox()->needsHomeObject()) { |
| 10492 | MOZ_ASSERT(initializer->funbox()->allowSuperProperty())do { static_assert( mozilla::detail::AssertionConditionType< decltype(initializer->funbox()->allowSuperProperty())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(initializer->funbox()->allowSuperProperty()))) , 0))) { do { } while (false); MOZ_ReportAssertionFailure("initializer->funbox()->allowSuperProperty()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10492) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "initializer->funbox()->allowSuperProperty()" ")"); do { MOZ_CrashSequence(__null, 10492); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10493 | if (!ce.emitMemberInitializerHomeObject(isStatic)) { |
| 10494 | // [stack] HOME HERIT? ARR LAMBDA |
| 10495 | // or: |
| 10496 | // [stack] CTOR HOME ARR LAMBDA |
| 10497 | return false; |
| 10498 | } |
| 10499 | } |
| 10500 | if (!ce.emitStoreMemberInitializer()) { |
| 10501 | // [stack] HOME HERIT? ARR |
| 10502 | // or: |
| 10503 | // [stack] CTOR HOME ARR |
| 10504 | return false; |
| 10505 | } |
| 10506 | } |
| 10507 | |
| 10508 | #ifdef ENABLE_DECORATORS |
| 10509 | // Index to use to append new initializers returned by decorators to the array |
| 10510 | if (!emitNumberOp(numInitializers)) { |
| 10511 | // [stack] HOME HERIT? ARR I |
| 10512 | // or: |
| 10513 | // [stack] CTOR HOME ARR I |
| 10514 | return false; |
| 10515 | } |
| 10516 | |
| 10517 | for (ParseNode* propdef : obj->contents()) { |
| 10518 | if (!propdef->is<ClassField>()) { |
| 10519 | continue; |
| 10520 | } |
| 10521 | ClassField* field = &propdef->as<ClassField>(); |
| 10522 | if (field->isStatic() != isStatic) { |
| 10523 | continue; |
| 10524 | } |
| 10525 | if (field->decorators() && !field->decorators()->empty()) { |
| 10526 | DecoratorEmitter de(this); |
| 10527 | if (!field->hasAccessor()) { |
| 10528 | if (!emitDupAt((hasHeritage || isStatic) ? 4 : 3)) { |
| 10529 | // [stack] ADDINIT HOME HERIT? ARR I ADDINIT |
| 10530 | // or: |
| 10531 | // [stack] ADDINIT CTOR HOME ARR I ADDINIT |
| 10532 | return false; |
| 10533 | } |
| 10534 | if (!de.emitApplyDecoratorsToFieldDefinition( |
| 10535 | &field->name(), field->decorators(), field->isStatic())) { |
| 10536 | // [stack] HOME HERIT? ARR I ADDINIT INITS |
| 10537 | // or: |
| 10538 | // [stack] CTOR HOME ARR I ADDINIT INITS |
| 10539 | return false; |
| 10540 | } |
| 10541 | if (!emit1(JSOp::Swap)) { |
| 10542 | // [stack] HOME HERIT? ARR I INITS ADDINIT |
| 10543 | // or: |
| 10544 | // [stack] CTOR HOME ARR I INITS ADDINIT |
| 10545 | return false; |
| 10546 | } |
| 10547 | if (!emitPopN(1)) { |
| 10548 | // [stack] ADDINIT HOME HERIT? ARR I INITS |
| 10549 | // or: |
| 10550 | // [stack] ADDINIT CTOR HOME ARR I INITS |
| 10551 | return false; |
| 10552 | } |
| 10553 | } else { |
| 10554 | ClassMethod* accessorGetterNode = field->accessorGetterNode(); |
| 10555 | auto accessorGetterKeyAtom = |
| 10556 | accessorGetterNode->left()->as<NameNode>().atom(); |
| 10557 | ClassMethod* accessorSetterNode = field->accessorSetterNode(); |
| 10558 | auto accessorSetterKeyAtom = |
| 10559 | accessorSetterNode->left()->as<NameNode>().atom(); |
| 10560 | if (!IsPrivateInstanceAccessor(accessorGetterNode)) { |
| 10561 | if (!emitTree(&accessorGetterNode->method())) { |
| 10562 | // [stack] ADDINIT HOME HERIT? ARR I GET |
| 10563 | // or: |
| 10564 | // [stack] ADDINIT CTOR HOME ARR I GET |
| 10565 | return false; |
| 10566 | } |
| 10567 | if (!emitTree(&accessorSetterNode->method())) { |
| 10568 | // [stack] ADDINIT HOME HERIT? ARR I GET |
| 10569 | // SET |
| 10570 | // or: |
| 10571 | // [stack] ADDINIT CTOR HOME ARR I GET SET |
| 10572 | return false; |
| 10573 | } |
| 10574 | } else { |
| 10575 | MOZ_ASSERT(IsPrivateInstanceAccessor(accessorSetterNode))do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsPrivateInstanceAccessor(accessorSetterNode))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(IsPrivateInstanceAccessor(accessorSetterNode)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("IsPrivateInstanceAccessor(accessorSetterNode)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10575) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsPrivateInstanceAccessor(accessorSetterNode)" ")"); do { MOZ_CrashSequence(__null, 10575); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10576 | auto getAccessor = [this]( |
| 10577 | ClassMethod* classMethod, |
| 10578 | TaggedParserAtomIndex& updatedAtom) -> bool { |
| 10579 | // [stack] |
| 10580 | |
| 10581 | // Synthesize a name for the lexical variable that will store the |
| 10582 | // private method body. |
| 10583 | TaggedParserAtomIndex name = |
| 10584 | classMethod->name().as<NameNode>().atom(); |
| 10585 | AccessorType accessorType = classMethod->accessorType(); |
| 10586 | StringBuilder storedMethodName(fc); |
| 10587 | if (!storedMethodName.append(parserAtoms(), name)) { |
| 10588 | return false; |
| 10589 | } |
| 10590 | if (!storedMethodName.append(accessorType == AccessorType::Getter |
| 10591 | ? ".getter" |
| 10592 | : ".setter")) { |
| 10593 | return false; |
| 10594 | } |
| 10595 | updatedAtom = storedMethodName.finishParserAtom(parserAtoms(), fc); |
| 10596 | if (!updatedAtom) { |
| 10597 | return false; |
| 10598 | } |
| 10599 | |
| 10600 | return emitGetName(updatedAtom); |
| 10601 | // [stack] ACCESSOR |
| 10602 | }; |
| 10603 | |
| 10604 | if (!getAccessor(accessorGetterNode, accessorGetterKeyAtom)) { |
| 10605 | // [stack] ADDINIT HOME HERIT? ARR I GET |
| 10606 | // or: |
| 10607 | // [stack] ADDINIT CTOR HOME ARR I GET |
| 10608 | return false; |
| 10609 | }; |
| 10610 | |
| 10611 | if (!getAccessor(accessorSetterNode, accessorSetterKeyAtom)) { |
| 10612 | // [stack] ADDINIT HOME HERIT? ARR I GET SET |
| 10613 | // or: |
| 10614 | // [stack] ADDINIT CTOR HOME ARR I GET SET |
| 10615 | return false; |
| 10616 | }; |
| 10617 | } |
| 10618 | |
| 10619 | if (!emitDupAt((hasHeritage || isStatic) ? 6 : 5)) { |
| 10620 | // [stack] ADDINIT HOME HERIT? ARR I GET SET ADDINIT |
| 10621 | // or: |
| 10622 | // [stack] ADDINIT CTOR HOME ARR I GET SET ADDINIT |
| 10623 | return false; |
| 10624 | } |
| 10625 | |
| 10626 | if (!emitUnpickN(2)) { |
| 10627 | // [stack] ADDINIT HOME HERIT? ARR I ADDINIT GET SET |
| 10628 | // or: |
| 10629 | // [stack] ADDINIT CTOR HOME ARR I ADDINIT GET SET |
| 10630 | return false; |
| 10631 | } |
| 10632 | |
| 10633 | if (!de.emitApplyDecoratorsToAccessorDefinition( |
| 10634 | &field->name(), field->decorators(), field->isStatic())) { |
| 10635 | // [stack] ADDINIT HOME HERIT? ARR I ADDINIT GET SET INITS |
| 10636 | // or: |
| 10637 | // [stack] ADDINIT CTOR HOME ARR I ADDINIT GET SET INITS |
| 10638 | return false; |
| 10639 | } |
| 10640 | |
| 10641 | if (!emitPickN(3)) { |
| 10642 | // [stack] HOME HERIT? ARR I GET SET INITS ADDINIT |
| 10643 | // or: |
| 10644 | // [stack] CTOR HOME ARR I GET SET INITS ADDINIT |
| 10645 | return false; |
| 10646 | } |
| 10647 | |
| 10648 | if (!emitPopN(1)) { |
| 10649 | // [stack] ADDINIT HOME HERIT? ARR I GET SET INITS |
| 10650 | // or: |
| 10651 | // [stack] ADDINIT CTOR HOME ARR I GET SET INITS |
| 10652 | return false; |
| 10653 | } |
| 10654 | |
| 10655 | if (!emitUnpickN(2)) { |
| 10656 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET SET |
| 10657 | // or: |
| 10658 | // [stack] ADDINIT CTOR HOME ARR I INITS GET SET |
| 10659 | return false; |
| 10660 | } |
| 10661 | |
| 10662 | if (!IsPrivateInstanceAccessor(accessorGetterNode)) { |
| 10663 | if (!isStatic) { |
| 10664 | if (!emitDupAt(hasHeritage ? 6 : 5)) { |
| 10665 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET SET HOME |
| 10666 | return false; |
| 10667 | } |
| 10668 | } else { |
| 10669 | if (!emitDupAt(6)) { |
| 10670 | // [stack] ADDINIT CTOR HOME ARR I INITS GET SET CTOR |
| 10671 | return false; |
| 10672 | } |
| 10673 | if (!emitDupAt(6)) { |
| 10674 | // [stack] ADDINIT CTOR HOME ARR I INITS GET SET CTOR HOME |
| 10675 | return false; |
| 10676 | } |
| 10677 | } |
| 10678 | |
| 10679 | PropertyEmitter::Kind kind = field->isStatic() |
| 10680 | ? PropertyEmitter::Kind::Static |
| 10681 | : PropertyEmitter::Kind::Prototype; |
| 10682 | if (!accessorGetterNode->name().isKind(ParseNodeKind::PrivateName)) { |
| 10683 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(!accessorSetterNode->name().isKind(ParseNodeKind:: PrivateName))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(!accessorSetterNode->name().isKind (ParseNodeKind::PrivateName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!accessorSetterNode->name().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10684) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "!accessorSetterNode->name().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 10684); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 10684 | !accessorSetterNode->name().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!accessorSetterNode->name().isKind(ParseNodeKind:: PrivateName))>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(!accessorSetterNode->name().isKind (ParseNodeKind::PrivateName)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!accessorSetterNode->name().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10684) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "!accessorSetterNode->name().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 10684); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10685 | |
| 10686 | if (!ce.prepareForPropValue(propdef->pn_pos.begin, kind)) { |
| 10687 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET SET HOME |
| 10688 | // or: |
| 10689 | // [stack] ADDINIT CTOR HOME ARR I INITS GET SET CTOR HOME CTOR |
| 10690 | return false; |
| 10691 | } |
| 10692 | if (!emitPickN(isStatic ? 3 : 1)) { |
| 10693 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET HOME SET |
| 10694 | // or: |
| 10695 | // [stack] ADDINIT CTOR HOME ARR I INITS GET CTOR HOME CTOR SET |
| 10696 | return false; |
| 10697 | } |
| 10698 | if (!ce.emitInit(AccessorType::Setter, accessorSetterKeyAtom)) { |
| 10699 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET HOME |
| 10700 | // or: |
| 10701 | // [stack] ADDINIT CTOR HOME ARR I INITS GET CTOR HOME |
| 10702 | return false; |
| 10703 | } |
| 10704 | |
| 10705 | if (!ce.prepareForPropValue(propdef->pn_pos.begin, kind)) { |
| 10706 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET HOME |
| 10707 | // or: |
| 10708 | // [stack] ADDINIT CTOR HOME ARR I INITS GET CTOR HOME CTOR |
| 10709 | return false; |
| 10710 | } |
| 10711 | if (!emitPickN(isStatic ? 3 : 1)) { |
| 10712 | // [stack] ADDINIT HOME HERIT? ARR I INITS HOME GET |
| 10713 | // or: |
| 10714 | // [stack] ADDINIT CTOR HOME ARR I INITS CTOR HOME CTOR GET |
| 10715 | return false; |
| 10716 | } |
| 10717 | if (!ce.emitInit(AccessorType::Getter, accessorGetterKeyAtom)) { |
| 10718 | // [stack] ADDINIT HOME HERIT? ARR I INITS HOME |
| 10719 | // or: |
| 10720 | // [stack] ADDINIT CTOR HOME ARR I INITS CTOR HOME |
| 10721 | return false; |
| 10722 | } |
| 10723 | } else { |
| 10724 | MOZ_ASSERT(isStatic)do { static_assert( mozilla::detail::AssertionConditionType< decltype(isStatic)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(isStatic))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("isStatic", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 10724); AnnotateMozCrashReason("MOZ_ASSERT" "(" "isStatic" ")" ); do { MOZ_CrashSequence(__null, 10724); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 10725 | // The getter and setter share the same name. |
| 10726 | if (!emitNewPrivateName(accessorSetterKeyAtom, |
| 10727 | accessorSetterKeyAtom)) { |
| 10728 | return false; |
| 10729 | } |
| 10730 | if (!ce.prepareForPrivateStaticMethod(propdef->pn_pos.begin)) { |
| 10731 | // [stack] ADDINIT CTOR HOME ARR I INITS GET SET CTOR HOME CTOR |
| 10732 | return false; |
| 10733 | } |
| 10734 | if (!emitGetPrivateName( |
| 10735 | &accessorSetterNode->name().as<NameNode>())) { |
| 10736 | // [stack] ADDINIT CTOR HOME ARR I INITS GET SET CTOR HOME CTOR |
| 10737 | // KEY |
| 10738 | return false; |
| 10739 | } |
| 10740 | if (!emitPickN(4)) { |
| 10741 | // [stack] ADDINIT CTOR HOME ARR I INITS GET CTOR HOME CTOR KEY |
| 10742 | // SET |
| 10743 | return false; |
| 10744 | } |
| 10745 | if (!ce.emitPrivateStaticMethod(AccessorType::Setter)) { |
| 10746 | // [stack] ADDINIT CTOR HOME ARR I INITS GET CTOR HOME |
| 10747 | return false; |
| 10748 | } |
| 10749 | |
| 10750 | if (!ce.prepareForPrivateStaticMethod(propdef->pn_pos.begin)) { |
| 10751 | // [stack] ADDINIT CTOR HOME ARR I INITS GET CTOR HOME CTOR |
| 10752 | return false; |
| 10753 | } |
| 10754 | if (!emitGetPrivateName( |
| 10755 | &accessorGetterNode->name().as<NameNode>())) { |
| 10756 | // [stack] ADDINIT CTOR HOME ARR I INITS GET CTOR HOME CTOR KEY |
| 10757 | return false; |
| 10758 | } |
| 10759 | if (!emitPickN(4)) { |
| 10760 | // [stack] ADDINIT CTOR HOME ARR I INITS CTOR HOME CTOR KEY GET |
| 10761 | return false; |
| 10762 | } |
| 10763 | if (!ce.emitPrivateStaticMethod(AccessorType::Getter)) { |
| 10764 | // [stack] ADDINIT CTOR HOME ARR I INITS CTOR HOME |
| 10765 | return false; |
| 10766 | } |
| 10767 | } |
| 10768 | |
| 10769 | if (!isStatic) { |
| 10770 | if (!emitPopN(1)) { |
| 10771 | // [stack] ADDINIT HOME HERIT? ARR I INITS |
| 10772 | return false; |
| 10773 | } |
| 10774 | } else { |
| 10775 | if (!emitPopN(2)) { |
| 10776 | // [stack] ADDINIT CTOR HOME ARR I INITS |
| 10777 | return false; |
| 10778 | } |
| 10779 | } |
| 10780 | } else { |
| 10781 | MOZ_ASSERT(IsPrivateInstanceAccessor(accessorSetterNode))do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsPrivateInstanceAccessor(accessorSetterNode))>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(IsPrivateInstanceAccessor(accessorSetterNode)))), 0) )) { do { } while (false); MOZ_ReportAssertionFailure("IsPrivateInstanceAccessor(accessorSetterNode)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10781) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsPrivateInstanceAccessor(accessorSetterNode)" ")"); do { MOZ_CrashSequence(__null, 10781); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10782 | |
| 10783 | if (!emitLexicalInitialization(accessorSetterKeyAtom)) { |
| 10784 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET SET |
| 10785 | // or: |
| 10786 | // [stack] ADDINIT CTOR HOME ARR I INITS GET SET |
| 10787 | return false; |
| 10788 | } |
| 10789 | |
| 10790 | if (!emitPopN(1)) { |
| 10791 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET |
| 10792 | // or: |
| 10793 | // [stack] ADDINIT CTOR HOME ARR I INITS GET |
| 10794 | return false; |
| 10795 | } |
| 10796 | |
| 10797 | if (!emitLexicalInitialization(accessorGetterKeyAtom)) { |
| 10798 | // [stack] ADDINIT HOME HERIT? ARR I INITS GET |
| 10799 | // or: |
| 10800 | // [stack] ADDINIT CTOR HOME ARR I INITS GET |
| 10801 | return false; |
| 10802 | } |
| 10803 | |
| 10804 | if (!emitPopN(1)) { |
| 10805 | // [stack] ADDINIT HOME HERIT? ARR I INITS |
| 10806 | // or: |
| 10807 | // [stack] ADDINIT CTOR HOME ARR I INITS |
| 10808 | return false; |
| 10809 | } |
| 10810 | } |
| 10811 | } |
| 10812 | if (!emit1(JSOp::InitElemInc)) { |
| 10813 | // [stack] ADDINIT HOME HERIT? ARR I |
| 10814 | // or: |
| 10815 | // [stack] ADDINIT CTOR HOME ARR I |
| 10816 | return false; |
| 10817 | } |
| 10818 | } |
| 10819 | } |
| 10820 | |
| 10821 | // Pop I |
| 10822 | if (!emitPopN(1)) { |
| 10823 | // [stack] ADDINIT HOME HERIT? ARR |
| 10824 | // or: |
| 10825 | // [stack] ADDINIT CTOR HOME ARR |
| 10826 | return false; |
| 10827 | } |
| 10828 | #endif |
| 10829 | |
| 10830 | if (!ce.emitMemberInitializersEnd()) { |
| 10831 | // [stack] ADDINIT HOME HERIT? |
| 10832 | // or: |
| 10833 | // [stack] ADDINIT CTOR HOME |
| 10834 | return false; |
| 10835 | } |
| 10836 | |
| 10837 | return true; |
| 10838 | } |
| 10839 | |
| 10840 | bool BytecodeEmitter::emitPrivateMethodInitializers(ClassEmitter& ce, |
| 10841 | ListNode* obj) { |
| 10842 | for (ParseNode* propdef : obj->contents()) { |
| 10843 | if (!propdef->is<ClassMethod>()) { |
| 10844 | continue; |
| 10845 | } |
| 10846 | auto* classMethod = &propdef->as<ClassMethod>(); |
| 10847 | |
| 10848 | // Skip over anything which isn't a private instance accessor. |
| 10849 | if (!IsPrivateInstanceAccessor(classMethod)) { |
| 10850 | continue; |
| 10851 | } |
| 10852 | |
| 10853 | if (!ce.prepareForMemberInitializer()) { |
| 10854 | // [stack] HOMEOBJ HERITAGE? ARRAY |
| 10855 | // or: |
| 10856 | // [stack] CTOR HOMEOBJ ARRAY |
| 10857 | return false; |
| 10858 | } |
| 10859 | |
| 10860 | // Synthesize a name for the lexical variable that will store the |
| 10861 | // private method body. |
| 10862 | TaggedParserAtomIndex name = classMethod->name().as<NameNode>().atom(); |
| 10863 | AccessorType accessorType = classMethod->accessorType(); |
| 10864 | StringBuilder storedMethodName(fc); |
| 10865 | if (!storedMethodName.append(parserAtoms(), name)) { |
| 10866 | return false; |
| 10867 | } |
| 10868 | if (!storedMethodName.append( |
| 10869 | accessorType == AccessorType::Getter ? ".getter" : ".setter")) { |
| 10870 | return false; |
| 10871 | } |
| 10872 | auto storedMethodAtom = |
| 10873 | storedMethodName.finishParserAtom(parserAtoms(), fc); |
| 10874 | |
| 10875 | // Emit the private method body and store it as a lexical var. |
| 10876 | if (!emitFunction(&classMethod->method())) { |
| 10877 | // [stack] HOMEOBJ HERITAGE? ARRAY METHOD |
| 10878 | // or: |
| 10879 | // [stack] CTOR HOMEOBJ ARRAY METHOD |
| 10880 | return false; |
| 10881 | } |
| 10882 | // The private method body needs to access the home object, |
| 10883 | // and the CE knows where that is on the stack. |
| 10884 | if (classMethod->method().funbox()->needsHomeObject()) { |
| 10885 | if (!ce.emitMemberInitializerHomeObject(false)) { |
| 10886 | // [stack] HOMEOBJ HERITAGE? ARRAY METHOD |
| 10887 | // or: |
| 10888 | // [stack] CTOR HOMEOBJ ARRAY METHOD |
| 10889 | return false; |
| 10890 | } |
| 10891 | } |
| 10892 | if (!emitLexicalInitialization(storedMethodAtom)) { |
| 10893 | // [stack] HOMEOBJ HERITAGE? ARRAY METHOD |
| 10894 | // or: |
| 10895 | // [stack] CTOR HOMEOBJ ARRAY METHOD |
| 10896 | return false; |
| 10897 | } |
| 10898 | if (!emit1(JSOp::Pop)) { |
| 10899 | // [stack] HOMEOBJ HERITAGE? ARRAY |
| 10900 | // or: |
| 10901 | // [stack] CTOR HOMEOBJ ARRAY |
| 10902 | return false; |
| 10903 | } |
| 10904 | |
| 10905 | if (!emitPrivateMethodInitializer(classMethod, storedMethodAtom)) { |
| 10906 | // [stack] HOMEOBJ HERITAGE? ARRAY |
| 10907 | // or: |
| 10908 | // [stack] CTOR HOMEOBJ ARRAY |
| 10909 | return false; |
| 10910 | } |
| 10911 | |
| 10912 | // Store the emitted initializer function into the .initializers array. |
| 10913 | if (!ce.emitStoreMemberInitializer()) { |
| 10914 | // [stack] HOMEOBJ HERITAGE? ARRAY |
| 10915 | // or: |
| 10916 | // [stack] CTOR HOMEOBJ ARRAY |
| 10917 | return false; |
| 10918 | } |
| 10919 | } |
| 10920 | |
| 10921 | return true; |
| 10922 | } |
| 10923 | |
| 10924 | bool BytecodeEmitter::emitPrivateMethodInitializer( |
| 10925 | ClassMethod* classMethod, TaggedParserAtomIndex storedMethodAtom) { |
| 10926 | MOZ_ASSERT(IsPrivateInstanceAccessor(classMethod))do { static_assert( mozilla::detail::AssertionConditionType< decltype(IsPrivateInstanceAccessor(classMethod))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(IsPrivateInstanceAccessor(classMethod)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("IsPrivateInstanceAccessor(classMethod)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 10926) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "IsPrivateInstanceAccessor(classMethod)" ")"); do { MOZ_CrashSequence(__null, 10926); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 10927 | |
| 10928 | auto* name = &classMethod->name().as<NameNode>(); |
| 10929 | |
| 10930 | // Emit the synthesized initializer function. |
| 10931 | FunctionNode* funNode = classMethod->initializerIfPrivate(); |
| 10932 | MOZ_ASSERT(funNode)do { static_assert( mozilla::detail::AssertionConditionType< decltype(funNode)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(funNode))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("funNode", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 10932); AnnotateMozCrashReason("MOZ_ASSERT" "(" "funNode" ")" ); do { MOZ_CrashSequence(__null, 10932); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 10933 | FunctionBox* funbox = funNode->funbox(); |
| 10934 | FunctionEmitter fe(this, funbox, funNode->syntaxKind(), |
| 10935 | FunctionEmitter::IsHoisted::No); |
| 10936 | if (!fe.prepareForNonLazy()) { |
| 10937 | // [stack] |
| 10938 | return false; |
| 10939 | } |
| 10940 | |
| 10941 | BytecodeEmitter bce2(this, funbox); |
| 10942 | if (!bce2.init(funNode->pn_pos)) { |
| 10943 | return false; |
| 10944 | } |
| 10945 | ParamsBodyNode* paramsBody = funNode->body(); |
| 10946 | FunctionScriptEmitter fse(&bce2, funbox, Nothing(), Nothing()); |
| 10947 | if (!fse.prepareForParameters()) { |
| 10948 | // [stack] |
| 10949 | return false; |
| 10950 | } |
| 10951 | if (!bce2.emitFunctionFormalParameters(paramsBody)) { |
| 10952 | // [stack] |
| 10953 | return false; |
| 10954 | } |
| 10955 | if (!fse.prepareForBody()) { |
| 10956 | // [stack] |
| 10957 | return false; |
| 10958 | } |
| 10959 | |
| 10960 | if (!bce2.emit1(JSOp::FunctionThis)) { |
| 10961 | // [stack] THIS |
| 10962 | return false; |
| 10963 | } |
| 10964 | if (!bce2.emitGetPrivateName(name)) { |
| 10965 | // [stack] THIS NAME |
| 10966 | return false; |
| 10967 | } |
| 10968 | if (!bce2.emitGetName(storedMethodAtom)) { |
| 10969 | // [stack] THIS NAME METHOD |
| 10970 | return false; |
| 10971 | } |
| 10972 | |
| 10973 | switch (name->privateNameKind()) { |
| 10974 | case PrivateNameKind::Setter: |
| 10975 | if (!bce2.emit1(JSOp::InitHiddenElemSetter)) { |
| 10976 | // [stack] THIS |
| 10977 | return false; |
| 10978 | } |
| 10979 | if (!bce2.emitGetPrivateName(name)) { |
| 10980 | // [stack] THIS NAME |
| 10981 | return false; |
| 10982 | } |
| 10983 | if (!bce2.emitAtomOp( |
| 10984 | JSOp::GetIntrinsic, |
| 10985 | TaggedParserAtomIndex::WellKnown::NoPrivateGetter())) { |
| 10986 | // [stack] THIS NAME FUN |
| 10987 | return false; |
| 10988 | } |
| 10989 | if (!bce2.emit1(JSOp::InitHiddenElemGetter)) { |
| 10990 | // [stack] THIS |
| 10991 | return false; |
| 10992 | } |
| 10993 | break; |
| 10994 | case PrivateNameKind::Getter: |
| 10995 | case PrivateNameKind::GetterSetter: |
| 10996 | if (classMethod->accessorType() == AccessorType::Getter) { |
| 10997 | if (!bce2.emit1(JSOp::InitHiddenElemGetter)) { |
| 10998 | // [stack] THIS |
| 10999 | return false; |
| 11000 | } |
| 11001 | } else { |
| 11002 | if (!bce2.emit1(JSOp::InitHiddenElemSetter)) { |
| 11003 | // [stack] THIS |
| 11004 | return false; |
| 11005 | } |
| 11006 | } |
| 11007 | break; |
| 11008 | default: |
| 11009 | MOZ_CRASH("Invalid op")do { do { } while (false); MOZ_ReportCrash("" "Invalid op", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 11009); AnnotateMozCrashReason("MOZ_CRASH(" "Invalid op" ")" ); do { MOZ_CrashSequence(__null, 11009); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 11010 | } |
| 11011 | |
| 11012 | // Pop remaining THIS. |
| 11013 | if (!bce2.emit1(JSOp::Pop)) { |
| 11014 | // [stack] |
| 11015 | return false; |
| 11016 | } |
| 11017 | |
| 11018 | if (!fse.emitEndBody()) { |
| 11019 | // [stack] |
| 11020 | return false; |
| 11021 | } |
| 11022 | if (!fse.intoStencil()) { |
| 11023 | return false; |
| 11024 | } |
| 11025 | |
| 11026 | if (!fe.emitNonLazyEnd()) { |
| 11027 | // [stack] HOMEOBJ HERITAGE? ARRAY FUN |
| 11028 | // or: |
| 11029 | // [stack] CTOR HOMEOBJ ARRAY FUN |
| 11030 | return false; |
| 11031 | } |
| 11032 | |
| 11033 | return true; |
| 11034 | } |
| 11035 | |
| 11036 | const MemberInitializers& BytecodeEmitter::findMemberInitializersForCall() |
| 11037 | const { |
| 11038 | for (const auto* current = this; current; current = current->parent) { |
| 11039 | if (current->sc->isFunctionBox()) { |
| 11040 | FunctionBox* funbox = current->sc->asFunctionBox(); |
| 11041 | |
| 11042 | if (funbox->isArrow()) { |
| 11043 | continue; |
| 11044 | } |
| 11045 | |
| 11046 | // If we found a non-arrow / non-constructor we were never allowed to |
| 11047 | // expect fields in the first place. |
| 11048 | MOZ_RELEASE_ASSERT(funbox->isClassConstructor())do { static_assert( mozilla::detail::AssertionConditionType< decltype(funbox->isClassConstructor())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(funbox->isClassConstructor ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("funbox->isClassConstructor()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 11048); AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "funbox->isClassConstructor()" ")"); do { MOZ_CrashSequence(__null, 11048); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11049 | |
| 11050 | return funbox->useMemberInitializers() ? funbox->memberInitializers() |
| 11051 | : MemberInitializers::Empty(); |
| 11052 | } |
| 11053 | } |
| 11054 | |
| 11055 | MOZ_RELEASE_ASSERT(compilationState.scopeContext.memberInitializers)do { static_assert( mozilla::detail::AssertionConditionType< decltype(compilationState.scopeContext.memberInitializers)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(compilationState.scopeContext.memberInitializers))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("compilationState.scopeContext.memberInitializers" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11055) ; AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "compilationState.scopeContext.memberInitializers" ")"); do { MOZ_CrashSequence(__null, 11055); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11056 | return *compilationState.scopeContext.memberInitializers; |
| 11057 | } |
| 11058 | |
| 11059 | bool BytecodeEmitter::emitInitializeInstanceMembers( |
| 11060 | bool isDerivedClassConstructor) { |
| 11061 | const MemberInitializers& memberInitializers = |
| 11062 | findMemberInitializersForCall(); |
| 11063 | MOZ_ASSERT(memberInitializers.valid)do { static_assert( mozilla::detail::AssertionConditionType< decltype(memberInitializers.valid)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(memberInitializers.valid))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("memberInitializers.valid" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11063) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "memberInitializers.valid" ")"); do { MOZ_CrashSequence(__null, 11063); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11064 | |
| 11065 | if (memberInitializers.hasPrivateBrand) { |
| 11066 | // This is guaranteed to run after super(), so we don't need TDZ checks. |
| 11067 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_this_())) { |
| 11068 | // [stack] THIS |
| 11069 | return false; |
| 11070 | } |
| 11071 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_privateBrand_())) { |
| 11072 | // [stack] THIS BRAND |
| 11073 | return false; |
| 11074 | } |
| 11075 | if (isDerivedClassConstructor) { |
| 11076 | if (!emitCheckPrivateField(ThrowCondition::ThrowHas, |
| 11077 | ThrowMsgKind::PrivateBrandDoubleInit)) { |
| 11078 | // [stack] THIS BRAND BOOL |
| 11079 | return false; |
| 11080 | } |
| 11081 | if (!emit1(JSOp::Pop)) { |
| 11082 | // [stack] THIS BRAND |
| 11083 | return false; |
| 11084 | } |
| 11085 | } |
| 11086 | if (!emit1(JSOp::Null)) { |
| 11087 | // [stack] THIS BRAND NULL |
| 11088 | return false; |
| 11089 | } |
| 11090 | if (!emit1(JSOp::InitHiddenElem)) { |
| 11091 | // [stack] THIS |
| 11092 | return false; |
| 11093 | } |
| 11094 | if (!emit1(JSOp::Pop)) { |
| 11095 | // [stack] |
| 11096 | return false; |
| 11097 | } |
| 11098 | } |
| 11099 | |
| 11100 | size_t numInitializers = memberInitializers.numMemberInitializers; |
| 11101 | if (numInitializers > 0) { |
| 11102 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_initializers_())) { |
| 11103 | // [stack] ARRAY |
| 11104 | return false; |
| 11105 | } |
| 11106 | |
| 11107 | for (size_t index = 0; index < numInitializers; index++) { |
| 11108 | if (index < numInitializers - 1) { |
| 11109 | // We Dup to keep the array around (it is consumed in the bytecode |
| 11110 | // below) for next iterations of this loop, except for the last |
| 11111 | // iteration, which avoids an extra Pop at the end of the loop. |
| 11112 | if (!emit1(JSOp::Dup)) { |
| 11113 | // [stack] ARRAY ARRAY |
| 11114 | return false; |
| 11115 | } |
| 11116 | } |
| 11117 | |
| 11118 | if (!emitNumberOp(index)) { |
| 11119 | // [stack] ARRAY? ARRAY INDEX |
| 11120 | return false; |
| 11121 | } |
| 11122 | |
| 11123 | if (!emit1(JSOp::GetElem)) { |
| 11124 | // [stack] ARRAY? FUNC |
| 11125 | return false; |
| 11126 | } |
| 11127 | |
| 11128 | // This is guaranteed to run after super(), so we don't need TDZ checks. |
| 11129 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_this_())) { |
| 11130 | // [stack] ARRAY? FUNC THIS |
| 11131 | return false; |
| 11132 | } |
| 11133 | |
| 11134 | // Callee is always internal function. |
| 11135 | if (!emitCall(JSOp::CallIgnoresRv, 0)) { |
| 11136 | // [stack] ARRAY? RVAL |
| 11137 | return false; |
| 11138 | } |
| 11139 | |
| 11140 | if (!emit1(JSOp::Pop)) { |
| 11141 | // [stack] ARRAY? |
| 11142 | return false; |
| 11143 | } |
| 11144 | } |
| 11145 | #ifdef ENABLE_DECORATORS |
| 11146 | if (memberInitializers.hasDecorators) { |
| 11147 | // Decorators Proposal |
| 11148 | // https://arai-a.github.io/ecma262-compare/?pr=2417&id=sec-initializeinstanceelements |
| 11149 | // 4. For each element e of elements, do |
| 11150 | // 4.a. If elementRecord.[[Kind]] is field or accessor, then |
| 11151 | // 4.a.i. Perform ? InitializeFieldOrAccessor(O, elementRecord). |
| 11152 | // |
| 11153 | |
| 11154 | // TODO: (See Bug 1817993) At the moment, we're applying the |
| 11155 | // initialization logic in two steps. The pre-decorator initialization |
| 11156 | // code runs, stores the initial value, and then we retrieve it here and |
| 11157 | // apply the initializers added by decorators. We should unify these two |
| 11158 | // steps. |
| 11159 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_initializers_())) { |
| 11160 | // [stack] ARRAY |
| 11161 | return false; |
| 11162 | } |
| 11163 | |
| 11164 | if (!emit1(JSOp::Dup)) { |
| 11165 | // [stack] ARRAY ARRAY |
| 11166 | return false; |
| 11167 | } |
| 11168 | |
| 11169 | if (!emitAtomOp(JSOp::GetProp, |
| 11170 | TaggedParserAtomIndex::WellKnown::length())) { |
| 11171 | // [stack] ARRAY LENGTH |
| 11172 | return false; |
| 11173 | } |
| 11174 | |
| 11175 | if (!emitNumberOp(static_cast<double>(numInitializers))) { |
| 11176 | // [stack] ARRAY LENGTH INDEX |
| 11177 | return false; |
| 11178 | } |
| 11179 | |
| 11180 | InternalWhileEmitter wh(this); |
| 11181 | // At this point, we have no context to determine offsets in the |
| 11182 | // code for this while statement. Ideally, it would correspond to |
| 11183 | // the field we're initializing. |
| 11184 | if (!wh.emitCond()) { |
| 11185 | // [stack] ARRAY LENGTH INDEX |
| 11186 | return false; |
| 11187 | } |
| 11188 | |
| 11189 | if (!emit1(JSOp::Dup)) { |
| 11190 | // [stack] ARRAY LENGTH INDEX INDEX |
| 11191 | return false; |
| 11192 | } |
| 11193 | |
| 11194 | if (!emitDupAt(2)) { |
| 11195 | // [stack] ARRAY LENGTH INDEX INDEX LENGTH |
| 11196 | return false; |
| 11197 | } |
| 11198 | |
| 11199 | if (!emit1(JSOp::Lt)) { |
| 11200 | // [stack] ARRAY LENGTH INDEX BOOL |
| 11201 | return false; |
| 11202 | } |
| 11203 | |
| 11204 | if (!wh.emitBody()) { |
| 11205 | // [stack] ARRAY LENGTH INDEX |
| 11206 | return false; |
| 11207 | } |
| 11208 | |
| 11209 | if (!emitDupAt(2)) { |
| 11210 | // [stack] ARRAY LENGTH INDEX ARRAY |
| 11211 | return false; |
| 11212 | } |
| 11213 | |
| 11214 | if (!emitDupAt(1)) { |
| 11215 | // [stack] ARRAY LENGTH INDEX ARRAY INDEX |
| 11216 | return false; |
| 11217 | } |
| 11218 | |
| 11219 | // Retrieve initializers for this field |
| 11220 | if (!emit1(JSOp::GetElem)) { |
| 11221 | // [stack] ARRAY LENGTH INDEX INITIALIZERS |
| 11222 | return false; |
| 11223 | } |
| 11224 | |
| 11225 | // This is guaranteed to run after super(), so we don't need TDZ checks. |
| 11226 | if (!emitGetName(TaggedParserAtomIndex::WellKnown::dot_this_())) { |
| 11227 | // [stack] ARRAY LENGTH INDEX INITIALIZERS THIS |
| 11228 | return false; |
| 11229 | } |
| 11230 | |
| 11231 | if (!emit1(JSOp::Swap)) { |
| 11232 | // [stack] ARRAY LENGTH INDEX THIS INITIALIZERS |
| 11233 | return false; |
| 11234 | } |
| 11235 | |
| 11236 | DecoratorEmitter de(this); |
| 11237 | if (!de.emitInitializeFieldOrAccessor()) { |
| 11238 | // [stack] ARRAY LENGTH INDEX |
| 11239 | return false; |
| 11240 | } |
| 11241 | |
| 11242 | if (!emit1(JSOp::Inc)) { |
| 11243 | // [stack] ARRAY LENGTH INDEX |
| 11244 | return false; |
| 11245 | } |
| 11246 | |
| 11247 | if (!wh.emitEnd()) { |
| 11248 | // [stack] ARRAY LENGTH INDEX |
| 11249 | return false; |
| 11250 | } |
| 11251 | |
| 11252 | if (!emitPopN(3)) { |
| 11253 | // [stack] |
| 11254 | return false; |
| 11255 | } |
| 11256 | // 5. Return unused. |
| 11257 | |
| 11258 | if (!de.emitCallExtraInitializers(TaggedParserAtomIndex::WellKnown:: |
| 11259 | dot_instanceExtraInitializers_())) { |
| 11260 | return false; |
| 11261 | } |
| 11262 | } |
| 11263 | #endif |
| 11264 | } |
| 11265 | return true; |
| 11266 | } |
| 11267 | |
| 11268 | bool BytecodeEmitter::emitInitializeStaticFields(ListNode* classMembers) { |
| 11269 | auto isStaticField = [](ParseNode* propdef) { |
| 11270 | return HasInitializer(propdef, true); |
| 11271 | }; |
| 11272 | size_t numFields = |
| 11273 | std::count_if(classMembers->contents().begin(), |
| 11274 | classMembers->contents().end(), isStaticField); |
| 11275 | |
| 11276 | if (numFields == 0) { |
| 11277 | return true; |
| 11278 | } |
| 11279 | |
| 11280 | if (!emitGetName( |
| 11281 | TaggedParserAtomIndex::WellKnown::dot_staticInitializers_())) { |
| 11282 | // [stack] CTOR ARRAY |
| 11283 | return false; |
| 11284 | } |
| 11285 | |
| 11286 | for (size_t fieldIndex = 0; fieldIndex < numFields; fieldIndex++) { |
| 11287 | bool hasNext = fieldIndex < numFields - 1; |
| 11288 | if (hasNext) { |
| 11289 | // We Dup to keep the array around (it is consumed in the bytecode below) |
| 11290 | // for next iterations of this loop, except for the last iteration, which |
| 11291 | // avoids an extra Pop at the end of the loop. |
| 11292 | if (!emit1(JSOp::Dup)) { |
| 11293 | // [stack] CTOR ARRAY ARRAY |
| 11294 | return false; |
| 11295 | } |
| 11296 | } |
| 11297 | |
| 11298 | if (!emitNumberOp(fieldIndex)) { |
| 11299 | // [stack] CTOR ARRAY? ARRAY INDEX |
| 11300 | return false; |
| 11301 | } |
| 11302 | |
| 11303 | if (!emit1(JSOp::GetElem)) { |
| 11304 | // [stack] CTOR ARRAY? FUNC |
| 11305 | return false; |
| 11306 | } |
| 11307 | |
| 11308 | if (!emitDupAt(1 + hasNext)) { |
| 11309 | // [stack] CTOR ARRAY? FUNC CTOR |
| 11310 | return false; |
| 11311 | } |
| 11312 | |
| 11313 | // Callee is always internal function. |
| 11314 | if (!emitCall(JSOp::CallIgnoresRv, 0)) { |
| 11315 | // [stack] CTOR ARRAY? RVAL |
| 11316 | return false; |
| 11317 | } |
| 11318 | |
| 11319 | if (!emit1(JSOp::Pop)) { |
| 11320 | // [stack] CTOR ARRAY? |
| 11321 | return false; |
| 11322 | } |
| 11323 | } |
| 11324 | |
| 11325 | #ifdef ENABLE_DECORATORS |
| 11326 | // Decorators Proposal |
| 11327 | // https://arai-a.github.io/ecma262-compare/?pr=2417&id=sec-initializeinstanceelements |
| 11328 | // 4. For each element e of elements, do |
| 11329 | // 4.a. If elementRecord.[[Kind]] is field or accessor, then |
| 11330 | // 4.a.i. Perform ? InitializeFieldOrAccessor(O, elementRecord). |
| 11331 | // |
| 11332 | |
| 11333 | // TODO: (See Bug 1817993) At the moment, we're applying the initialization |
| 11334 | // logic in two steps. The pre-decorator initialization code runs, stores |
| 11335 | // the initial value, and then we retrieve it here and apply the |
| 11336 | // initializers added by decorators. We should unify these two steps. |
| 11337 | if (!emitGetName( |
| 11338 | TaggedParserAtomIndex::WellKnown::dot_staticInitializers_())) { |
| 11339 | // [stack] CTOR ARRAY |
| 11340 | return false; |
| 11341 | } |
| 11342 | |
| 11343 | if (!emit1(JSOp::Dup)) { |
| 11344 | // [stack] CTOR ARRAY ARRAY |
| 11345 | return false; |
| 11346 | } |
| 11347 | |
| 11348 | if (!emitAtomOp(JSOp::GetProp, TaggedParserAtomIndex::WellKnown::length())) { |
| 11349 | // [stack] CTOR ARRAY LENGTH |
| 11350 | return false; |
| 11351 | } |
| 11352 | |
| 11353 | if (!emitNumberOp(static_cast<double>(numFields))) { |
| 11354 | // [stack] CTOR ARRAY LENGTH INDEX |
| 11355 | return false; |
| 11356 | } |
| 11357 | |
| 11358 | InternalWhileEmitter wh(this); |
| 11359 | // At this point, we have no context to determine offsets in the |
| 11360 | // code for this while statement. Ideally, it would correspond to |
| 11361 | // the field we're initializing. |
| 11362 | if (!wh.emitCond()) { |
| 11363 | // [stack] CTOR ARRAY LENGTH INDEX |
| 11364 | return false; |
| 11365 | } |
| 11366 | |
| 11367 | if (!emit1(JSOp::Dup)) { |
| 11368 | // [stack] CTOR ARRAY LENGTH INDEX INDEX |
| 11369 | return false; |
| 11370 | } |
| 11371 | |
| 11372 | if (!emitDupAt(2)) { |
| 11373 | // [stack] CTOR ARRAY LENGTH INDEX INDEX LENGTH |
| 11374 | return false; |
| 11375 | } |
| 11376 | |
| 11377 | if (!emit1(JSOp::Lt)) { |
| 11378 | // [stack] CTOR ARRAY LENGTH INDEX BOOL |
| 11379 | return false; |
| 11380 | } |
| 11381 | |
| 11382 | if (!wh.emitBody()) { |
| 11383 | // [stack] CTOR ARRAY LENGTH INDEX |
| 11384 | return false; |
| 11385 | } |
| 11386 | |
| 11387 | if (!emitDupAt(2)) { |
| 11388 | // [stack] CTOR ARRAY LENGTH INDEX ARRAY |
| 11389 | return false; |
| 11390 | } |
| 11391 | |
| 11392 | if (!emitDupAt(1)) { |
| 11393 | // [stack] CTOR ARRAY LENGTH INDEX ARRAY INDEX |
| 11394 | return false; |
| 11395 | } |
| 11396 | |
| 11397 | // Retrieve initializers for this field |
| 11398 | if (!emit1(JSOp::GetElem)) { |
| 11399 | // [stack] CTOR ARRAY LENGTH INDEX INITIALIZERS |
| 11400 | return false; |
| 11401 | } |
| 11402 | |
| 11403 | if (!emitDupAt(4)) { |
| 11404 | // [stack] CTOR ARRAY LENGTH INDEX INITIALIZERS CTOR |
| 11405 | return false; |
| 11406 | } |
| 11407 | |
| 11408 | if (!emit1(JSOp::Swap)) { |
| 11409 | // [stack] CTOR ARRAY LENGTH INDEX CTOR INITIALIZERS |
| 11410 | return false; |
| 11411 | } |
| 11412 | |
| 11413 | DecoratorEmitter de(this); |
| 11414 | if (!de.emitInitializeFieldOrAccessor()) { |
| 11415 | // [stack] CTOR ARRAY LENGTH INDEX |
| 11416 | return false; |
| 11417 | } |
| 11418 | |
| 11419 | if (!emit1(JSOp::Inc)) { |
| 11420 | // [stack] CTOR ARRAY LENGTH INDEX |
| 11421 | return false; |
| 11422 | } |
| 11423 | |
| 11424 | if (!wh.emitEnd()) { |
| 11425 | // [stack] CTOR ARRAY LENGTH INDEX |
| 11426 | return false; |
| 11427 | } |
| 11428 | |
| 11429 | if (!emitPopN(3)) { |
| 11430 | // [stack] CTOR |
| 11431 | return false; |
| 11432 | } |
| 11433 | // 5. Return unused. |
| 11434 | #endif |
| 11435 | |
| 11436 | // Overwrite |.staticInitializers| and |.staticFieldKeys| with undefined to |
| 11437 | // avoid keeping the arrays alive indefinitely. |
| 11438 | auto clearStaticFieldSlot = [&](TaggedParserAtomIndex name) { |
| 11439 | NameOpEmitter noe(this, name, NameOpEmitter::Kind::SimpleAssignment); |
| 11440 | if (!noe.prepareForRhs()) { |
| 11441 | // [stack] ENV? VAL? |
| 11442 | return false; |
| 11443 | } |
| 11444 | |
| 11445 | if (!emit1(JSOp::Undefined)) { |
| 11446 | // [stack] ENV? VAL? UNDEFINED |
| 11447 | return false; |
| 11448 | } |
| 11449 | |
| 11450 | if (!noe.emitAssignment()) { |
| 11451 | // [stack] VAL |
| 11452 | return false; |
| 11453 | } |
| 11454 | |
| 11455 | if (!emit1(JSOp::Pop)) { |
| 11456 | // [stack] |
| 11457 | return false; |
| 11458 | } |
| 11459 | |
| 11460 | return true; |
| 11461 | }; |
| 11462 | |
| 11463 | if (!clearStaticFieldSlot( |
| 11464 | TaggedParserAtomIndex::WellKnown::dot_staticInitializers_())) { |
| 11465 | return false; |
| 11466 | } |
| 11467 | |
| 11468 | auto isStaticFieldWithComputedName = [](ParseNode* propdef) { |
| 11469 | return propdef->is<ClassField>() && propdef->as<ClassField>().isStatic() && |
| 11470 | propdef->as<ClassField>().name().getKind() == |
| 11471 | ParseNodeKind::ComputedName; |
| 11472 | }; |
| 11473 | |
| 11474 | if (std::any_of(classMembers->contents().begin(), |
| 11475 | classMembers->contents().end(), |
| 11476 | isStaticFieldWithComputedName)) { |
| 11477 | if (!clearStaticFieldSlot( |
| 11478 | TaggedParserAtomIndex::WellKnown::dot_staticFieldKeys_())) { |
| 11479 | return false; |
| 11480 | } |
| 11481 | } |
| 11482 | |
| 11483 | return true; |
| 11484 | } |
| 11485 | |
| 11486 | // Using MOZ_NEVER_INLINE in here is a workaround for llvm.org/pr14047. See |
| 11487 | // the comment on emitSwitch. |
| 11488 | MOZ_NEVER_INLINE__attribute__((noinline)) bool BytecodeEmitter::emitObject(ListNode* objNode) { |
| 11489 | // Note: this method uses the ObjLiteralWriter and emits ObjLiteralStencil |
| 11490 | // objects into the GCThingList, which will evaluate them into real GC objects |
| 11491 | // or shapes during JSScript::fullyInitFromEmitter. Eventually we want |
| 11492 | // JSOp::Object to be a real opcode, but for now, performance constraints |
| 11493 | // limit us to evaluating object literals at the end of parse, when we're |
| 11494 | // allowed to allocate GC things. |
| 11495 | // |
| 11496 | // There are four cases here, in descending order of preference: |
| 11497 | // |
| 11498 | // 1. The list of property names is "normal" and constant (no computed |
| 11499 | // values, no integer indices), the values are all simple constants |
| 11500 | // (numbers, booleans, strings), *and* this occurs in a run-once |
| 11501 | // (singleton) context. In this case, we can emit ObjLiteral |
| 11502 | // instructions to build an object with values, and the object will be |
| 11503 | // attached to a JSOp::Object opcode, whose semantics are for the backend |
| 11504 | // to simply steal the object from the script. |
| 11505 | // |
| 11506 | // 2. The list of property names is "normal" and constant as above, *and* this |
| 11507 | // occurs in a run-once (singleton) context, but some values are complex |
| 11508 | // (computed expressions, sub-objects, functions, etc.). In this case, we |
| 11509 | // can still use JSOp::Object (because singleton context), but the object |
| 11510 | // has |undefined| property values and InitProp ops are emitted to set the |
| 11511 | // values. |
| 11512 | // |
| 11513 | // 3. The list of property names is "normal" and constant as above, but this |
| 11514 | // occurs in a non-run-once (non-singleton) context. In this case, we can |
| 11515 | // use the ObjLiteral functionality to describe an *empty* object (all |
| 11516 | // values left undefined) with the right fields, which will become a |
| 11517 | // JSOp::NewObject opcode using the object's shape to speed up the creation |
| 11518 | // of the object each time it executes. The emitted bytecode still needs |
| 11519 | // InitProp ops to set the values in this case. |
| 11520 | // |
| 11521 | // 4. Any other case. As a fallback, we use NewInit to create a new, empty |
| 11522 | // object (i.e., `{}`) and then emit bytecode to initialize its properties |
| 11523 | // one-by-one. |
| 11524 | |
| 11525 | bool useObjLiteral = false; |
| 11526 | bool useObjLiteralValues = false; |
| 11527 | isPropertyListObjLiteralCompatible(objNode, &useObjLiteralValues, |
| 11528 | &useObjLiteral); |
| 11529 | |
| 11530 | // [stack] |
| 11531 | // |
| 11532 | ObjectEmitter oe(this); |
| 11533 | if (useObjLiteral) { |
| 11534 | bool singleton = checkSingletonContext() && |
| 11535 | !objNode->hasNonConstInitializer() && objNode->head(); |
| 11536 | JSOp op; |
| 11537 | if (singleton) { |
| 11538 | // Case 1 or 2. |
| 11539 | op = JSOp::Object; |
| 11540 | } else { |
| 11541 | // Case 3. |
| 11542 | useObjLiteralValues = false; |
| 11543 | op = JSOp::NewObject; |
| 11544 | } |
| 11545 | |
| 11546 | // Use an ObjLiteral op. This will record ObjLiteral insns in the |
| 11547 | // objLiteralWriter's buffer and add a fixup to the list of ObjLiteral |
| 11548 | // fixups so that at GC-publish time at the end of parse, the full object |
| 11549 | // (case 1 or 2) or shape (case 3) can be allocated and the bytecode can be |
| 11550 | // patched to refer to it. |
| 11551 | if (!emitPropertyListObjLiteral(objNode, op, useObjLiteralValues)) { |
| 11552 | // [stack] OBJ |
| 11553 | return false; |
| 11554 | } |
| 11555 | // Put the ObjectEmitter in the right state. This tells it that there will |
| 11556 | // already be an object on the stack as a result of the (eventual) |
| 11557 | // NewObject or Object op, and prepares it to emit values if needed. |
| 11558 | if (!oe.emitObjectWithTemplateOnStack()) { |
| 11559 | // [stack] OBJ |
| 11560 | return false; |
| 11561 | } |
| 11562 | if (!useObjLiteralValues) { |
| 11563 | // Case 2 or 3 above: we still need to emit bytecode to fill in the |
| 11564 | // object's property values. |
| 11565 | if (!emitPropertyList(objNode, oe, ObjectLiteral)) { |
| 11566 | // [stack] OBJ |
| 11567 | return false; |
| 11568 | } |
| 11569 | } |
| 11570 | } else { |
| 11571 | // Case 4 above: no ObjLiteral use, just bytecode to build the object from |
| 11572 | // scratch. |
| 11573 | if (!oe.emitObject(objNode->count())) { |
| 11574 | // [stack] OBJ |
| 11575 | return false; |
| 11576 | } |
| 11577 | if (!emitPropertyList(objNode, oe, ObjectLiteral)) { |
| 11578 | // [stack] OBJ |
| 11579 | return false; |
| 11580 | } |
| 11581 | } |
| 11582 | |
| 11583 | if (!oe.emitEnd()) { |
| 11584 | // [stack] OBJ |
| 11585 | return false; |
| 11586 | } |
| 11587 | |
| 11588 | return true; |
| 11589 | } |
| 11590 | |
| 11591 | bool BytecodeEmitter::emitArrayLiteral(ListNode* array) { |
| 11592 | // Emit JSOp::Object if the array consists entirely of primitive values and we |
| 11593 | // are in a singleton context. |
| 11594 | if (checkSingletonContext() && !array->hasNonConstInitializer() && |
| 11595 | !array->empty() && isArrayObjLiteralCompatible(array)) { |
| 11596 | return emitObjLiteralArray(array); |
| 11597 | } |
| 11598 | |
| 11599 | return emitArray(array); |
| 11600 | } |
| 11601 | |
| 11602 | bool BytecodeEmitter::emitArray(ListNode* array) { |
| 11603 | /* |
| 11604 | * Emit code for [a, b, c] that is equivalent to constructing a new |
| 11605 | * array and in source order evaluating each element value and adding |
| 11606 | * it to the array, without invoking latent setters. We use the |
| 11607 | * JSOp::NewInit and JSOp::InitElemArray bytecodes to ignore setters and |
| 11608 | * to avoid dup'ing and popping the array as each element is added, as |
| 11609 | * JSOp::SetElem/JSOp::SetProp would do. |
| 11610 | */ |
| 11611 | |
| 11612 | uint32_t nspread = 0; |
| 11613 | for (ParseNode* elem : array->contents()) { |
| 11614 | if (elem->isKind(ParseNodeKind::Spread)) { |
| 11615 | nspread++; |
| 11616 | } |
| 11617 | } |
| 11618 | |
| 11619 | // Array literal's length is limited to NELEMENTS_LIMIT in parser. |
| 11620 | static_assert(NativeObject::MAX_DENSE_ELEMENTS_COUNT <= INT32_MAX(2147483647), |
| 11621 | "array literals' maximum length must not exceed limits " |
| 11622 | "required by BaselineCompiler::emit_NewArray, " |
| 11623 | "BaselineCompiler::emit_InitElemArray, " |
| 11624 | "and DoSetElemFallback's handling of JSOp::InitElemArray"); |
| 11625 | |
| 11626 | uint32_t count = array->count(); |
| 11627 | MOZ_ASSERT(count >= nspread)do { static_assert( mozilla::detail::AssertionConditionType< decltype(count >= nspread)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(count >= nspread))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("count >= nspread" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11627) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "count >= nspread" ")"); do { MOZ_CrashSequence(__null, 11627); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11628 | MOZ_ASSERT(count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT,do { static_assert( mozilla::detail::AssertionConditionType< decltype(count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT" " (" "the parser must throw an error if the array exceeds maximum " "length" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 11630); AnnotateMozCrashReason("MOZ_ASSERT" "(" "count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT" ") (" "the parser must throw an error if the array exceeds maximum " "length" ")"); do { MOZ_CrashSequence(__null, 11630); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 11629 | "the parser must throw an error if the array exceeds maximum "do { static_assert( mozilla::detail::AssertionConditionType< decltype(count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT" " (" "the parser must throw an error if the array exceeds maximum " "length" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 11630); AnnotateMozCrashReason("MOZ_ASSERT" "(" "count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT" ") (" "the parser must throw an error if the array exceeds maximum " "length" ")"); do { MOZ_CrashSequence(__null, 11630); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false) |
| 11630 | "length")do { static_assert( mozilla::detail::AssertionConditionType< decltype(count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT)) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT" " (" "the parser must throw an error if the array exceeds maximum " "length" ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 11630); AnnotateMozCrashReason("MOZ_ASSERT" "(" "count <= NativeObject::MAX_DENSE_ELEMENTS_COUNT" ") (" "the parser must throw an error if the array exceeds maximum " "length" ")"); do { MOZ_CrashSequence(__null, 11630); __attribute__ ((nomerge)) ::abort(); } while (false); } } while (false); |
| 11631 | |
| 11632 | // For arrays with spread, this is a very pessimistic allocation, the |
| 11633 | // minimum possible final size. |
| 11634 | if (!emitUint32Operand(JSOp::NewArray, count - nspread)) { |
| 11635 | // [stack] ARRAY |
| 11636 | return false; |
| 11637 | } |
| 11638 | |
| 11639 | uint32_t index = 0; |
| 11640 | bool afterSpread = false; |
| 11641 | for (ParseNode* elem : array->contents()) { |
| 11642 | if (elem->isKind(ParseNodeKind::Spread)) { |
| 11643 | if (!afterSpread) { |
| 11644 | afterSpread = true; |
| 11645 | if (!emitNumberOp(index)) { |
| 11646 | // [stack] ARRAY INDEX |
| 11647 | return false; |
| 11648 | } |
| 11649 | } |
| 11650 | |
| 11651 | ParseNode* expr = elem->as<UnaryNode>().kid(); |
| 11652 | SelfHostedIter selfHostedIter = getSelfHostedIterFor(expr); |
| 11653 | |
| 11654 | if (!updateSourceCoordNotes(elem->pn_pos.begin)) { |
| 11655 | return false; |
| 11656 | } |
| 11657 | if (!emitIterable(expr, selfHostedIter)) { |
| 11658 | // [stack] ARRAY INDEX ITERABLE |
| 11659 | return false; |
| 11660 | } |
| 11661 | if (!emitIterator(selfHostedIter)) { |
| 11662 | // [stack] ARRAY INDEX NEXT ITER |
| 11663 | return false; |
| 11664 | } |
| 11665 | if (!emit2(JSOp::Pick, 3)) { |
| 11666 | // [stack] INDEX NEXT ITER ARRAY |
| 11667 | return false; |
| 11668 | } |
| 11669 | if (!emit2(JSOp::Pick, 3)) { |
| 11670 | // [stack] NEXT ITER ARRAY INDEX |
| 11671 | return false; |
| 11672 | } |
| 11673 | if (!emitSpread(selfHostedIter)) { |
| 11674 | // [stack] ARRAY INDEX |
| 11675 | return false; |
| 11676 | } |
| 11677 | } else { |
| 11678 | if (!updateSourceCoordNotesIfNonLiteral(elem)) { |
| 11679 | return false; |
| 11680 | } |
| 11681 | if (elem->isKind(ParseNodeKind::Elision)) { |
| 11682 | if (!emit1(JSOp::Hole)) { |
| 11683 | return false; |
| 11684 | } |
| 11685 | } else { |
| 11686 | if (!emitTree(elem, ValueUsage::WantValue)) { |
| 11687 | // [stack] ARRAY INDEX? VALUE |
| 11688 | return false; |
| 11689 | } |
| 11690 | } |
| 11691 | |
| 11692 | if (afterSpread) { |
| 11693 | if (!emit1(JSOp::InitElemInc)) { |
| 11694 | // [stack] ARRAY (INDEX+1) |
| 11695 | return false; |
| 11696 | } |
| 11697 | } else { |
| 11698 | if (!emitUint32Operand(JSOp::InitElemArray, index)) { |
| 11699 | // [stack] ARRAY |
| 11700 | return false; |
| 11701 | } |
| 11702 | } |
| 11703 | } |
| 11704 | |
| 11705 | index++; |
| 11706 | } |
| 11707 | MOZ_ASSERT(index == count)do { static_assert( mozilla::detail::AssertionConditionType< decltype(index == count)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(index == count))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("index == count" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11707) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "index == count" ")" ); do { MOZ_CrashSequence(__null, 11707); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 11708 | if (afterSpread) { |
| 11709 | if (!emit1(JSOp::Pop)) { |
| 11710 | // [stack] ARRAY |
| 11711 | return false; |
| 11712 | } |
| 11713 | } |
| 11714 | return true; |
| 11715 | } |
| 11716 | |
| 11717 | bool BytecodeEmitter::emitSpreadIntoArray(UnaryNode* elem) { |
| 11718 | MOZ_ASSERT(elem->isKind(ParseNodeKind::Spread))do { static_assert( mozilla::detail::AssertionConditionType< decltype(elem->isKind(ParseNodeKind::Spread))>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(elem->isKind(ParseNodeKind::Spread)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("elem->isKind(ParseNodeKind::Spread)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11718) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "elem->isKind(ParseNodeKind::Spread)" ")"); do { MOZ_CrashSequence(__null, 11718); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11719 | |
| 11720 | if (!updateSourceCoordNotes(elem->pn_pos.begin)) { |
| 11721 | // [stack] VALUE |
| 11722 | return false; |
| 11723 | } |
| 11724 | |
| 11725 | SelfHostedIter selfHostedIter = getSelfHostedIterFor(elem->kid()); |
| 11726 | MOZ_ASSERT(selfHostedIter == SelfHostedIter::Deny ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter == SelfHostedIter::Deny || selfHostedIter == SelfHostedIter::AllowContent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter == SelfHostedIter ::Deny || selfHostedIter == SelfHostedIter::AllowContent))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter == SelfHostedIter::Deny || selfHostedIter == SelfHostedIter::AllowContent" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11727) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter == SelfHostedIter::Deny || selfHostedIter == SelfHostedIter::AllowContent" ")"); do { MOZ_CrashSequence(__null, 11727); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11727 | selfHostedIter == SelfHostedIter::AllowContent)do { static_assert( mozilla::detail::AssertionConditionType< decltype(selfHostedIter == SelfHostedIter::Deny || selfHostedIter == SelfHostedIter::AllowContent)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(selfHostedIter == SelfHostedIter ::Deny || selfHostedIter == SelfHostedIter::AllowContent))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("selfHostedIter == SelfHostedIter::Deny || selfHostedIter == SelfHostedIter::AllowContent" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11727) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "selfHostedIter == SelfHostedIter::Deny || selfHostedIter == SelfHostedIter::AllowContent" ")"); do { MOZ_CrashSequence(__null, 11727); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11728 | |
| 11729 | if (!emitIterator(selfHostedIter)) { |
| 11730 | // [stack] NEXT ITER |
| 11731 | return false; |
| 11732 | } |
| 11733 | |
| 11734 | if (!emitUint32Operand(JSOp::NewArray, 0)) { |
| 11735 | // [stack] NEXT ITER ARRAY |
| 11736 | return false; |
| 11737 | } |
| 11738 | |
| 11739 | if (!emitNumberOp(0)) { |
| 11740 | // [stack] NEXT ITER ARRAY INDEX |
| 11741 | return false; |
| 11742 | } |
| 11743 | |
| 11744 | if (!emitSpread(selfHostedIter)) { |
| 11745 | // [stack] ARRAY INDEX |
| 11746 | return false; |
| 11747 | } |
| 11748 | |
| 11749 | if (!emit1(JSOp::Pop)) { |
| 11750 | // [stack] ARRAY |
| 11751 | return false; |
| 11752 | } |
| 11753 | return true; |
| 11754 | } |
| 11755 | |
| 11756 | static inline JSOp UnaryOpParseNodeKindToJSOp(ParseNodeKind pnk) { |
| 11757 | switch (pnk) { |
| 11758 | case ParseNodeKind::ThrowStmt: |
| 11759 | return JSOp::Throw; |
| 11760 | case ParseNodeKind::VoidExpr: |
| 11761 | return JSOp::Void; |
| 11762 | case ParseNodeKind::NotExpr: |
| 11763 | return JSOp::Not; |
| 11764 | case ParseNodeKind::BitNotExpr: |
| 11765 | return JSOp::BitNot; |
| 11766 | case ParseNodeKind::PosExpr: |
| 11767 | return JSOp::Pos; |
| 11768 | case ParseNodeKind::NegExpr: |
| 11769 | return JSOp::Neg; |
| 11770 | default: |
| 11771 | MOZ_CRASH("unexpected unary op")do { do { } while (false); MOZ_ReportCrash("" "unexpected unary op" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11771) ; AnnotateMozCrashReason("MOZ_CRASH(" "unexpected unary op" ")" ); do { MOZ_CrashSequence(__null, 11771); __attribute__((nomerge )) ::abort(); } while (false); } while (false); |
| 11772 | } |
| 11773 | } |
| 11774 | |
| 11775 | bool BytecodeEmitter::emitUnary(UnaryNode* unaryNode) { |
| 11776 | if (!updateSourceCoordNotes(unaryNode->pn_pos.begin)) { |
| 11777 | return false; |
| 11778 | } |
| 11779 | |
| 11780 | JSOp op = UnaryOpParseNodeKindToJSOp(unaryNode->getKind()); |
| 11781 | ValueUsage valueUsage = |
| 11782 | op == JSOp::Void ? ValueUsage::IgnoreValue : ValueUsage::WantValue; |
| 11783 | if (!emitTree(unaryNode->kid(), valueUsage)) { |
| 11784 | return false; |
| 11785 | } |
| 11786 | return emit1(op); |
| 11787 | } |
| 11788 | |
| 11789 | bool BytecodeEmitter::emitTypeof(UnaryNode* typeofNode, JSOp op) { |
| 11790 | MOZ_ASSERT(op == JSOp::Typeof || op == JSOp::TypeofExpr)do { static_assert( mozilla::detail::AssertionConditionType< decltype(op == JSOp::Typeof || op == JSOp::TypeofExpr)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(op == JSOp::Typeof || op == JSOp::TypeofExpr))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("op == JSOp::Typeof || op == JSOp::TypeofExpr" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11790) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "op == JSOp::Typeof || op == JSOp::TypeofExpr" ")"); do { MOZ_CrashSequence(__null, 11790); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11791 | |
| 11792 | if (!updateSourceCoordNotes(typeofNode->pn_pos.begin)) { |
| 11793 | return false; |
| 11794 | } |
| 11795 | |
| 11796 | if (!emitTree(typeofNode->kid())) { |
| 11797 | return false; |
| 11798 | } |
| 11799 | |
| 11800 | return emit1(op); |
| 11801 | } |
| 11802 | |
| 11803 | bool BytecodeEmitter::tryEmitTypeofEq(ListNode* node, bool* emitted) { |
| 11804 | // Emit specialized opcode for the following if possible: |
| 11805 | // * typeof val == "type" |
| 11806 | // * typeof val != "type" |
| 11807 | // * typeof val > "u" # minified `typeof val === "undefined"` |
| 11808 | // * typeof val < "u" # minified `typeof val !== "undefined"` |
| 11809 | // |
| 11810 | // NOTE: Given the comparison is done for string, `==` and `===` have |
| 11811 | // no difference. Same for `!=` and `!==`. |
| 11812 | MOZ_ASSERT(node->isKind(ParseNodeKind::StrictEqExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::StrictEqExpr) || node ->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind ::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node ->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind ::GtExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::StrictEqExpr ) || node->isKind(ParseNodeKind::EqExpr) || node->isKind (ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind ::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node-> isKind(ParseNodeKind::GtExpr)))), 0))) { do { } while (false) ; MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11817) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" ")"); do { MOZ_CrashSequence(__null, 11817); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11813 | node->isKind(ParseNodeKind::EqExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::StrictEqExpr) || node ->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind ::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node ->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind ::GtExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::StrictEqExpr ) || node->isKind(ParseNodeKind::EqExpr) || node->isKind (ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind ::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node-> isKind(ParseNodeKind::GtExpr)))), 0))) { do { } while (false) ; MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11817) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" ")"); do { MOZ_CrashSequence(__null, 11817); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11814 | node->isKind(ParseNodeKind::StrictNeExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::StrictEqExpr) || node ->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind ::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node ->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind ::GtExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::StrictEqExpr ) || node->isKind(ParseNodeKind::EqExpr) || node->isKind (ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind ::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node-> isKind(ParseNodeKind::GtExpr)))), 0))) { do { } while (false) ; MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11817) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" ")"); do { MOZ_CrashSequence(__null, 11817); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11815 | node->isKind(ParseNodeKind::NeExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::StrictEqExpr) || node ->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind ::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node ->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind ::GtExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::StrictEqExpr ) || node->isKind(ParseNodeKind::EqExpr) || node->isKind (ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind ::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node-> isKind(ParseNodeKind::GtExpr)))), 0))) { do { } while (false) ; MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11817) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" ")"); do { MOZ_CrashSequence(__null, 11817); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11816 | node->isKind(ParseNodeKind::LtExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::StrictEqExpr) || node ->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind ::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node ->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind ::GtExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::StrictEqExpr ) || node->isKind(ParseNodeKind::EqExpr) || node->isKind (ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind ::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node-> isKind(ParseNodeKind::GtExpr)))), 0))) { do { } while (false) ; MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11817) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" ")"); do { MOZ_CrashSequence(__null, 11817); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11817 | node->isKind(ParseNodeKind::GtExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(node->isKind(ParseNodeKind::StrictEqExpr) || node ->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind ::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node ->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind ::GtExpr))>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(node->isKind(ParseNodeKind::StrictEqExpr ) || node->isKind(ParseNodeKind::EqExpr) || node->isKind (ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind ::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node-> isKind(ParseNodeKind::GtExpr)))), 0))) { do { } while (false) ; MOZ_ReportAssertionFailure("node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11817) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "node->isKind(ParseNodeKind::StrictEqExpr) || node->isKind(ParseNodeKind::EqExpr) || node->isKind(ParseNodeKind::StrictNeExpr) || node->isKind(ParseNodeKind::NeExpr) || node->isKind(ParseNodeKind::LtExpr) || node->isKind(ParseNodeKind::GtExpr)" ")"); do { MOZ_CrashSequence(__null, 11817); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11818 | |
| 11819 | if (node->count() != 2) { |
| 11820 | *emitted = false; |
| 11821 | return true; |
| 11822 | } |
| 11823 | |
| 11824 | ParseNode* left = node->head(); |
| 11825 | ParseNode* right = left->pn_next; |
| 11826 | MOZ_ASSERT(right)do { static_assert( mozilla::detail::AssertionConditionType< decltype(right)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(right))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("right", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 11826); AnnotateMozCrashReason("MOZ_ASSERT" "(" "right" ")" ); do { MOZ_CrashSequence(__null, 11826); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 11827 | |
| 11828 | UnaryNode* typeofNode; |
| 11829 | NameNode* typenameNode; |
| 11830 | JSOp op; |
| 11831 | JSType type; |
| 11832 | |
| 11833 | if (node->isKind(ParseNodeKind::LtExpr) || |
| 11834 | node->isKind(ParseNodeKind::GtExpr)) { |
| 11835 | if (left->isKind(ParseNodeKind::TypeOfNameExpr) && |
| 11836 | right->isKind(ParseNodeKind::StringExpr)) { |
| 11837 | typeofNode = &left->as<UnaryNode>(); |
| 11838 | typenameNode = &right->as<NameNode>(); |
| 11839 | |
| 11840 | if (node->isKind(ParseNodeKind::LtExpr)) { |
| 11841 | op = JSOp::Ne; |
| 11842 | } else { |
| 11843 | op = JSOp::Eq; |
| 11844 | } |
| 11845 | } else if (left->isKind(ParseNodeKind::StringExpr) && |
| 11846 | right->isKind(ParseNodeKind::TypeOfNameExpr)) { |
| 11847 | typeofNode = &right->as<UnaryNode>(); |
| 11848 | typenameNode = &left->as<NameNode>(); |
| 11849 | |
| 11850 | if (node->isKind(ParseNodeKind::LtExpr)) { |
| 11851 | op = JSOp::Eq; |
| 11852 | } else { |
| 11853 | op = JSOp::Ne; |
| 11854 | } |
| 11855 | } else { |
| 11856 | *emitted = false; |
| 11857 | return true; |
| 11858 | } |
| 11859 | |
| 11860 | TaggedParserAtomIndex typeName = typenameNode->atom(); |
| 11861 | if (typeName.isLength1StaticParserString() && |
| 11862 | typeName.toLength1StaticParserString() == |
| 11863 | Length1StaticParserString('u')) { |
| 11864 | type = JSTYPE_UNDEFINED; |
| 11865 | } else { |
| 11866 | *emitted = false; |
| 11867 | return true; |
| 11868 | } |
| 11869 | } else { |
| 11870 | if (node->isKind(ParseNodeKind::StrictEqExpr) || |
| 11871 | node->isKind(ParseNodeKind::EqExpr)) { |
| 11872 | op = JSOp::Eq; |
| 11873 | } else { |
| 11874 | op = JSOp::Ne; |
| 11875 | } |
| 11876 | |
| 11877 | // NOTE: ParseNodeKind::TypeOfExpr cannot use JSOp::TypeofEq. |
| 11878 | // See JSOp::GetName document. |
| 11879 | if (left->isKind(ParseNodeKind::TypeOfNameExpr) && |
| 11880 | right->isKind(ParseNodeKind::StringExpr)) { |
| 11881 | typeofNode = &left->as<UnaryNode>(); |
| 11882 | typenameNode = &right->as<NameNode>(); |
| 11883 | } else if (right->isKind(ParseNodeKind::TypeOfNameExpr) && |
| 11884 | left->isKind(ParseNodeKind::StringExpr)) { |
| 11885 | typeofNode = &right->as<UnaryNode>(); |
| 11886 | typenameNode = &left->as<NameNode>(); |
| 11887 | } else { |
| 11888 | *emitted = false; |
| 11889 | return true; |
| 11890 | } |
| 11891 | |
| 11892 | TaggedParserAtomIndex typeName = typenameNode->atom(); |
| 11893 | if (typeName == TaggedParserAtomIndex::WellKnown::undefined()) { |
| 11894 | type = JSTYPE_UNDEFINED; |
| 11895 | } else if (typeName == TaggedParserAtomIndex::WellKnown::object()) { |
| 11896 | type = JSTYPE_OBJECT; |
| 11897 | } else if (typeName == TaggedParserAtomIndex::WellKnown::function()) { |
| 11898 | type = JSTYPE_FUNCTION; |
| 11899 | } else if (typeName == TaggedParserAtomIndex::WellKnown::string()) { |
| 11900 | type = JSTYPE_STRING; |
| 11901 | } else if (typeName == TaggedParserAtomIndex::WellKnown::number()) { |
| 11902 | type = JSTYPE_NUMBER; |
| 11903 | } else if (typeName == TaggedParserAtomIndex::WellKnown::boolean()) { |
| 11904 | type = JSTYPE_BOOLEAN; |
| 11905 | } else if (typeName == TaggedParserAtomIndex::WellKnown::symbol()) { |
| 11906 | type = JSTYPE_SYMBOL; |
| 11907 | } else if (typeName == TaggedParserAtomIndex::WellKnown::bigint()) { |
| 11908 | type = JSTYPE_BIGINT; |
| 11909 | } else { |
| 11910 | *emitted = false; |
| 11911 | return true; |
| 11912 | } |
| 11913 | } |
| 11914 | |
| 11915 | if (!updateSourceCoordNotes(typeofNode->pn_pos.begin)) { |
| 11916 | return false; |
| 11917 | } |
| 11918 | |
| 11919 | if (!emitTree(typeofNode->kid())) { |
| 11920 | // [stack] VAL |
| 11921 | return false; |
| 11922 | } |
| 11923 | |
| 11924 | if (!emit2(JSOp::TypeofEq, TypeofEqOperand(type, op).rawValue())) { |
| 11925 | // [stack] CMP |
| 11926 | return false; |
| 11927 | } |
| 11928 | |
| 11929 | *emitted = true; |
| 11930 | return true; |
| 11931 | } |
| 11932 | |
| 11933 | bool BytecodeEmitter::emitFunctionFormalParameters(ParamsBodyNode* paramsBody) { |
| 11934 | FunctionBox* funbox = sc->asFunctionBox(); |
| 11935 | |
| 11936 | bool hasRest = funbox->hasRest(); |
| 11937 | |
| 11938 | FunctionParamsEmitter fpe(this, funbox); |
| 11939 | for (ParseNode* arg : paramsBody->parameters()) { |
| 11940 | ParseNode* bindingElement = arg; |
| 11941 | ParseNode* initializer = nullptr; |
| 11942 | if (arg->isKind(ParseNodeKind::AssignExpr)) { |
| 11943 | bindingElement = arg->as<BinaryNode>().left(); |
| 11944 | initializer = arg->as<BinaryNode>().right(); |
| 11945 | } |
| 11946 | bool hasInitializer = !!initializer; |
| 11947 | bool isRest = |
| 11948 | hasRest && arg->pn_next == *std::end(paramsBody->parameters()); |
| 11949 | bool isDestructuring = !bindingElement->isKind(ParseNodeKind::Name); |
| 11950 | |
| 11951 | // Left-hand sides are either simple names or destructuring patterns. |
| 11952 | MOZ_ASSERT(bindingElement->isKind(ParseNodeKind::Name) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(bindingElement->isKind(ParseNodeKind::Name) || bindingElement ->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind (ParseNodeKind::ObjectExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(bindingElement->isKind(ParseNodeKind ::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr ) || bindingElement->isKind(ParseNodeKind::ObjectExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bindingElement->isKind(ParseNodeKind::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11954) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "bindingElement->isKind(ParseNodeKind::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 11954); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11953 | bindingElement->isKind(ParseNodeKind::ArrayExpr) ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(bindingElement->isKind(ParseNodeKind::Name) || bindingElement ->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind (ParseNodeKind::ObjectExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(bindingElement->isKind(ParseNodeKind ::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr ) || bindingElement->isKind(ParseNodeKind::ObjectExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bindingElement->isKind(ParseNodeKind::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11954) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "bindingElement->isKind(ParseNodeKind::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 11954); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 11954 | bindingElement->isKind(ParseNodeKind::ObjectExpr))do { static_assert( mozilla::detail::AssertionConditionType< decltype(bindingElement->isKind(ParseNodeKind::Name) || bindingElement ->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind (ParseNodeKind::ObjectExpr))>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(bindingElement->isKind(ParseNodeKind ::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr ) || bindingElement->isKind(ParseNodeKind::ObjectExpr)))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bindingElement->isKind(ParseNodeKind::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind(ParseNodeKind::ObjectExpr)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 11954) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "bindingElement->isKind(ParseNodeKind::Name) || bindingElement->isKind(ParseNodeKind::ArrayExpr) || bindingElement->isKind(ParseNodeKind::ObjectExpr)" ")"); do { MOZ_CrashSequence(__null, 11954); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 11955 | |
| 11956 | auto emitDefaultInitializer = [this, &initializer, &bindingElement]() { |
| 11957 | // [stack] |
| 11958 | |
| 11959 | if (!this->emitInitializer(initializer, bindingElement)) { |
| 11960 | // [stack] DEFAULT |
| 11961 | return false; |
| 11962 | } |
| 11963 | return true; |
| 11964 | }; |
| 11965 | |
| 11966 | auto emitDestructuring = [this, &bindingElement]() { |
| 11967 | // [stack] ARG |
| 11968 | |
| 11969 | if (!this->emitDestructuringOps(&bindingElement->as<ListNode>(), |
| 11970 | DestructuringFlavor::Declaration, |
| 11971 | SelfHostedIter::Deny)) { |
| 11972 | // [stack] ARG |
| 11973 | return false; |
| 11974 | } |
| 11975 | |
| 11976 | return true; |
| 11977 | }; |
| 11978 | |
| 11979 | if (isRest) { |
| 11980 | if (isDestructuring) { |
| 11981 | if (!fpe.prepareForDestructuringRest()) { |
| 11982 | // [stack] |
| 11983 | return false; |
| 11984 | } |
| 11985 | if (!emitDestructuring()) { |
| 11986 | // [stack] |
| 11987 | return false; |
| 11988 | } |
| 11989 | if (!fpe.emitDestructuringRestEnd()) { |
| 11990 | // [stack] |
| 11991 | return false; |
| 11992 | } |
| 11993 | } else { |
| 11994 | auto paramName = bindingElement->as<NameNode>().name(); |
| 11995 | if (!fpe.emitRest(paramName)) { |
| 11996 | // [stack] |
| 11997 | return false; |
| 11998 | } |
| 11999 | } |
| 12000 | |
| 12001 | continue; |
| 12002 | } |
| 12003 | |
| 12004 | if (isDestructuring) { |
| 12005 | if (hasInitializer) { |
| 12006 | if (!fpe.prepareForDestructuringDefaultInitializer()) { |
| 12007 | // [stack] |
| 12008 | return false; |
| 12009 | } |
| 12010 | if (!emitDefaultInitializer()) { |
| 12011 | // [stack] |
| 12012 | return false; |
| 12013 | } |
| 12014 | if (!fpe.prepareForDestructuringDefault()) { |
| 12015 | // [stack] |
| 12016 | return false; |
| 12017 | } |
| 12018 | if (!emitDestructuring()) { |
| 12019 | // [stack] |
| 12020 | return false; |
| 12021 | } |
| 12022 | if (!fpe.emitDestructuringDefaultEnd()) { |
| 12023 | // [stack] |
| 12024 | return false; |
| 12025 | } |
| 12026 | } else { |
| 12027 | if (!fpe.prepareForDestructuring()) { |
| 12028 | // [stack] |
| 12029 | return false; |
| 12030 | } |
| 12031 | if (!emitDestructuring()) { |
| 12032 | // [stack] |
| 12033 | return false; |
| 12034 | } |
| 12035 | if (!fpe.emitDestructuringEnd()) { |
| 12036 | // [stack] |
| 12037 | return false; |
| 12038 | } |
| 12039 | } |
| 12040 | |
| 12041 | continue; |
| 12042 | } |
| 12043 | |
| 12044 | if (hasInitializer) { |
| 12045 | if (!fpe.prepareForDefault()) { |
| 12046 | // [stack] |
| 12047 | return false; |
| 12048 | } |
| 12049 | if (!emitDefaultInitializer()) { |
| 12050 | // [stack] |
| 12051 | return false; |
| 12052 | } |
| 12053 | auto paramName = bindingElement->as<NameNode>().name(); |
| 12054 | if (!fpe.emitDefaultEnd(paramName)) { |
| 12055 | // [stack] |
| 12056 | return false; |
| 12057 | } |
| 12058 | |
| 12059 | continue; |
| 12060 | } |
| 12061 | |
| 12062 | auto paramName = bindingElement->as<NameNode>().name(); |
| 12063 | if (!fpe.emitSimple(paramName)) { |
| 12064 | // [stack] |
| 12065 | return false; |
| 12066 | } |
| 12067 | } |
| 12068 | |
| 12069 | return true; |
| 12070 | } |
| 12071 | |
| 12072 | bool BytecodeEmitter::emitInitializeFunctionSpecialNames() { |
| 12073 | FunctionBox* funbox = sc->asFunctionBox(); |
| 12074 | |
| 12075 | // [stack] |
| 12076 | |
| 12077 | auto emitInitializeFunctionSpecialName = |
| 12078 | [](BytecodeEmitter* bce, TaggedParserAtomIndex name, JSOp op) { |
| 12079 | // A special name must be slotful, either on the frame or on the |
| 12080 | // call environment. |
| 12081 | MOZ_ASSERT(bce->lookupName(name).hasKnownSlot())do { static_assert( mozilla::detail::AssertionConditionType< decltype(bce->lookupName(name).hasKnownSlot())>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(bce->lookupName(name).hasKnownSlot()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("bce->lookupName(name).hasKnownSlot()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12081) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "bce->lookupName(name).hasKnownSlot()" ")"); do { MOZ_CrashSequence(__null, 12081); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12082 | |
| 12083 | NameOpEmitter noe(bce, name, NameOpEmitter::Kind::Initialize); |
| 12084 | if (!noe.prepareForRhs()) { |
| 12085 | // [stack] |
| 12086 | return false; |
| 12087 | } |
| 12088 | if (!bce->emit1(op)) { |
| 12089 | // [stack] THIS/ARGUMENTS/NEW.TARGET |
| 12090 | return false; |
| 12091 | } |
| 12092 | if (!noe.emitAssignment()) { |
| 12093 | // [stack] THIS/ARGUMENTS/NEW.TARGET |
| 12094 | return false; |
| 12095 | } |
| 12096 | if (!bce->emit1(JSOp::Pop)) { |
| 12097 | // [stack] |
| 12098 | return false; |
| 12099 | } |
| 12100 | |
| 12101 | return true; |
| 12102 | }; |
| 12103 | |
| 12104 | // Do nothing if the function doesn't have an arguments binding. |
| 12105 | if (funbox->needsArgsObj()) { |
| 12106 | // Self-hosted code should use the more efficient ArgumentsLength and |
| 12107 | // GetArgument intrinsics instead of `arguments`. |
| 12108 | MOZ_ASSERT(emitterMode != BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode != BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode != BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode != BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12108) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode != BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 12108); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12109 | if (!emitInitializeFunctionSpecialName( |
| 12110 | this, TaggedParserAtomIndex::WellKnown::arguments(), |
| 12111 | JSOp::Arguments)) { |
| 12112 | // [stack] |
| 12113 | return false; |
| 12114 | } |
| 12115 | } |
| 12116 | |
| 12117 | // Do nothing if the function doesn't have a this-binding (this |
| 12118 | // happens for instance if it doesn't use this/eval or if it's an |
| 12119 | // arrow function). |
| 12120 | if (funbox->functionHasThisBinding()) { |
| 12121 | if (!emitInitializeFunctionSpecialName( |
| 12122 | this, TaggedParserAtomIndex::WellKnown::dot_this_(), |
| 12123 | JSOp::FunctionThis)) { |
| 12124 | return false; |
| 12125 | } |
| 12126 | } |
| 12127 | |
| 12128 | // Do nothing if the function doesn't have a new.target-binding (this happens |
| 12129 | // for instance if it doesn't use new.target/eval or if it's an arrow |
| 12130 | // function). |
| 12131 | if (funbox->functionHasNewTargetBinding()) { |
| 12132 | if (!emitInitializeFunctionSpecialName( |
| 12133 | this, TaggedParserAtomIndex::WellKnown::dot_newTarget_(), |
| 12134 | JSOp::NewTarget)) { |
| 12135 | return false; |
| 12136 | } |
| 12137 | } |
| 12138 | |
| 12139 | // Do nothing if the function doesn't implicitly return a promise result. |
| 12140 | if (funbox->needsPromiseResult()) { |
| 12141 | if (!emitInitializeFunctionSpecialName( |
| 12142 | this, TaggedParserAtomIndex::WellKnown::dot_generator_(), |
| 12143 | JSOp::Generator)) { |
| 12144 | // [stack] |
| 12145 | return false; |
| 12146 | } |
| 12147 | } |
| 12148 | return true; |
| 12149 | } |
| 12150 | |
| 12151 | bool BytecodeEmitter::emitLexicalInitialization(NameNode* name) { |
| 12152 | return emitLexicalInitialization(name->name()); |
| 12153 | } |
| 12154 | |
| 12155 | bool BytecodeEmitter::emitLexicalInitialization(TaggedParserAtomIndex name) { |
| 12156 | NameOpEmitter noe(this, name, NameOpEmitter::Kind::Initialize); |
| 12157 | if (!noe.prepareForRhs()) { |
| 12158 | return false; |
| 12159 | } |
| 12160 | |
| 12161 | // The caller has pushed the RHS to the top of the stack. Assert that the |
| 12162 | // binding can be initialized without a binding object on the stack, and that |
| 12163 | // no JSOp::BindUnqualifiedName or JSOp::BindUnqualifiedGName ops were |
| 12164 | // emitted. |
| 12165 | MOZ_ASSERT(noe.loc().isLexical() || noe.loc().isSynthetic() ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(noe.loc().isLexical() || noe.loc().isSynthetic() || noe .loc().isPrivateMethod())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(noe.loc().isLexical() || noe .loc().isSynthetic() || noe.loc().isPrivateMethod()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("noe.loc().isLexical() || noe.loc().isSynthetic() || noe.loc().isPrivateMethod()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12166) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "noe.loc().isLexical() || noe.loc().isSynthetic() || noe.loc().isPrivateMethod()" ")"); do { MOZ_CrashSequence(__null, 12166); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12166 | noe.loc().isPrivateMethod())do { static_assert( mozilla::detail::AssertionConditionType< decltype(noe.loc().isLexical() || noe.loc().isSynthetic() || noe .loc().isPrivateMethod())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(noe.loc().isLexical() || noe .loc().isSynthetic() || noe.loc().isPrivateMethod()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("noe.loc().isLexical() || noe.loc().isSynthetic() || noe.loc().isPrivateMethod()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12166) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "noe.loc().isLexical() || noe.loc().isSynthetic() || noe.loc().isPrivateMethod()" ")"); do { MOZ_CrashSequence(__null, 12166); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12167 | MOZ_ASSERT(!noe.emittedBindOp())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!noe.emittedBindOp())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!noe.emittedBindOp()))), 0)) ) { do { } while (false); MOZ_ReportAssertionFailure("!noe.emittedBindOp()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12167) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "!noe.emittedBindOp()" ")"); do { MOZ_CrashSequence(__null, 12167); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12168 | |
| 12169 | if (!noe.emitAssignment()) { |
| 12170 | return false; |
| 12171 | } |
| 12172 | |
| 12173 | return true; |
| 12174 | } |
| 12175 | |
| 12176 | static MOZ_ALWAYS_INLINEinline ParseNode* FindConstructor(ListNode* classMethods) { |
| 12177 | for (ParseNode* classElement : classMethods->contents()) { |
| 12178 | ParseNode* unwrappedElement = classElement; |
| 12179 | if (unwrappedElement->is<LexicalScopeNode>()) { |
| 12180 | unwrappedElement = unwrappedElement->as<LexicalScopeNode>().scopeBody(); |
| 12181 | } |
| 12182 | if (unwrappedElement->is<ClassMethod>()) { |
| 12183 | ClassMethod& method = unwrappedElement->as<ClassMethod>(); |
| 12184 | ParseNode& methodName = method.name(); |
| 12185 | if (!method.isStatic() && |
| 12186 | (methodName.isKind(ParseNodeKind::ObjectPropertyName) || |
| 12187 | methodName.isKind(ParseNodeKind::StringExpr)) && |
| 12188 | methodName.as<NameNode>().atom() == |
| 12189 | TaggedParserAtomIndex::WellKnown::constructor()) { |
| 12190 | return classElement; |
| 12191 | } |
| 12192 | } |
| 12193 | } |
| 12194 | return nullptr; |
| 12195 | } |
| 12196 | |
| 12197 | bool BytecodeEmitter::emitNewPrivateName(TaggedParserAtomIndex bindingName, |
| 12198 | TaggedParserAtomIndex symbolName) { |
| 12199 | if (!emitAtomOp(JSOp::NewPrivateName, symbolName)) { |
| 12200 | // [stack] HERITAGE PRIVATENAME |
| 12201 | return false; |
| 12202 | } |
| 12203 | |
| 12204 | // Add a binding for #name => privatename |
| 12205 | if (!emitLexicalInitialization(bindingName)) { |
| 12206 | // [stack] HERITAGE PRIVATENAME |
| 12207 | return false; |
| 12208 | } |
| 12209 | |
| 12210 | // Pop Private name off the stack. |
| 12211 | if (!emit1(JSOp::Pop)) { |
| 12212 | // [stack] HERITAGE |
| 12213 | return false; |
| 12214 | } |
| 12215 | |
| 12216 | return true; |
| 12217 | } |
| 12218 | |
| 12219 | bool BytecodeEmitter::emitNewPrivateNames( |
| 12220 | TaggedParserAtomIndex privateBrandName, ListNode* classMembers) { |
| 12221 | bool hasPrivateBrand = false; |
| 12222 | |
| 12223 | for (ParseNode* classElement : classMembers->contents()) { |
| 12224 | ParseNode* elementName; |
| 12225 | if (classElement->is<ClassMethod>()) { |
| 12226 | elementName = &classElement->as<ClassMethod>().name(); |
| 12227 | } else if (classElement->is<ClassField>()) { |
| 12228 | elementName = &classElement->as<ClassField>().name(); |
| 12229 | } else { |
| 12230 | continue; |
| 12231 | } |
| 12232 | |
| 12233 | if (!elementName->isKind(ParseNodeKind::PrivateName)) { |
| 12234 | continue; |
| 12235 | } |
| 12236 | |
| 12237 | // Non-static private methods' private names are optimized away. |
| 12238 | bool isOptimized = false; |
| 12239 | if (classElement->is<ClassMethod>() && |
| 12240 | !classElement->as<ClassMethod>().isStatic()) { |
| 12241 | hasPrivateBrand = true; |
| 12242 | if (classElement->as<ClassMethod>().accessorType() == |
| 12243 | AccessorType::None) { |
| 12244 | isOptimized = true; |
| 12245 | } |
| 12246 | } |
| 12247 | |
| 12248 | if (!isOptimized) { |
| 12249 | auto privateName = elementName->as<NameNode>().name(); |
| 12250 | if (!emitNewPrivateName(privateName, privateName)) { |
| 12251 | return false; |
| 12252 | } |
| 12253 | } |
| 12254 | } |
| 12255 | |
| 12256 | if (hasPrivateBrand) { |
| 12257 | // We don't make a private name for every optimized method, but we need one |
| 12258 | // private name per class, the `.privateBrand`. |
| 12259 | if (!emitNewPrivateName( |
| 12260 | TaggedParserAtomIndex::WellKnown::dot_privateBrand_(), |
| 12261 | privateBrandName)) { |
| 12262 | return false; |
| 12263 | } |
| 12264 | } |
| 12265 | return true; |
| 12266 | } |
| 12267 | |
| 12268 | // This follows ES6 14.5.14 (ClassDefinitionEvaluation) and ES6 14.5.15 |
| 12269 | // (BindingClassDeclarationEvaluation). |
| 12270 | bool BytecodeEmitter::emitClass( |
| 12271 | ClassNode* classNode, |
| 12272 | ClassNameKind nameKind /* = ClassNameKind::BindingName */, |
| 12273 | TaggedParserAtomIndex |
| 12274 | nameForAnonymousClass /* = TaggedParserAtomIndex::null() */) { |
| 12275 | MOZ_ASSERT((nameKind == ClassNameKind::InferredName) ==do { static_assert( mozilla::detail::AssertionConditionType< decltype((nameKind == ClassNameKind::InferredName) == bool(nameForAnonymousClass ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!((nameKind == ClassNameKind::InferredName) == bool(nameForAnonymousClass )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("(nameKind == ClassNameKind::InferredName) == bool(nameForAnonymousClass)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12276) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "(nameKind == ClassNameKind::InferredName) == bool(nameForAnonymousClass)" ")"); do { MOZ_CrashSequence(__null, 12276); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12276 | bool(nameForAnonymousClass))do { static_assert( mozilla::detail::AssertionConditionType< decltype((nameKind == ClassNameKind::InferredName) == bool(nameForAnonymousClass ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!((nameKind == ClassNameKind::InferredName) == bool(nameForAnonymousClass )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("(nameKind == ClassNameKind::InferredName) == bool(nameForAnonymousClass)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12276) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "(nameKind == ClassNameKind::InferredName) == bool(nameForAnonymousClass)" ")"); do { MOZ_CrashSequence(__null, 12276); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12277 | |
| 12278 | ParseNode* heritageExpression = classNode->heritage(); |
| 12279 | ListNode* classMembers = classNode->memberList(); |
| 12280 | ParseNode* constructor = FindConstructor(classMembers); |
| 12281 | |
| 12282 | // If |nameKind != ClassNameKind::ComputedName| |
| 12283 | // [stack] |
| 12284 | // Else |
| 12285 | // [stack] NAME |
| 12286 | |
| 12287 | ClassEmitter ce(this); |
| 12288 | TaggedParserAtomIndex innerName; |
| 12289 | ClassEmitter::Kind kind = ClassEmitter::Kind::Expression; |
| 12290 | if (ClassNames* names = classNode->names()) { |
| 12291 | MOZ_ASSERT(nameKind == ClassNameKind::BindingName)do { static_assert( mozilla::detail::AssertionConditionType< decltype(nameKind == ClassNameKind::BindingName)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(nameKind == ClassNameKind::BindingName))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("nameKind == ClassNameKind::BindingName" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12291) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "nameKind == ClassNameKind::BindingName" ")"); do { MOZ_CrashSequence(__null, 12291); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12292 | innerName = names->innerBinding()->name(); |
| 12293 | MOZ_ASSERT(innerName)do { static_assert( mozilla::detail::AssertionConditionType< decltype(innerName)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(innerName))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("innerName", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 12293); AnnotateMozCrashReason("MOZ_ASSERT" "(" "innerName" ")"); do { MOZ_CrashSequence(__null, 12293); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12294 | |
| 12295 | if (names->outerBinding()) { |
| 12296 | MOZ_ASSERT(names->outerBinding()->name())do { static_assert( mozilla::detail::AssertionConditionType< decltype(names->outerBinding()->name())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(names->outerBinding()-> name()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("names->outerBinding()->name()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 12296); AnnotateMozCrashReason("MOZ_ASSERT" "(" "names->outerBinding()->name()" ")"); do { MOZ_CrashSequence(__null, 12296); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12297 | MOZ_ASSERT(names->outerBinding()->name() == innerName)do { static_assert( mozilla::detail::AssertionConditionType< decltype(names->outerBinding()->name() == innerName)> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(names->outerBinding()->name() == innerName))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("names->outerBinding()->name() == innerName" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12297) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "names->outerBinding()->name() == innerName" ")"); do { MOZ_CrashSequence(__null, 12297); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12298 | kind = ClassEmitter::Kind::Declaration; |
| 12299 | } |
| 12300 | } |
| 12301 | |
| 12302 | if (LexicalScopeNode* scopeBindings = classNode->scopeBindings()) { |
| 12303 | if (!ce.emitScope(scopeBindings->scopeBindings())) { |
| 12304 | // [stack] |
| 12305 | return false; |
| 12306 | } |
| 12307 | } |
| 12308 | |
| 12309 | bool isDerived = !!heritageExpression; |
| 12310 | if (isDerived) { |
| 12311 | if (!updateSourceCoordNotes(classNode->pn_pos.begin)) { |
| 12312 | return false; |
| 12313 | } |
| 12314 | if (!markStepBreakpoint()) { |
| 12315 | return false; |
| 12316 | } |
| 12317 | if (!emitTree(heritageExpression)) { |
| 12318 | // [stack] HERITAGE |
| 12319 | return false; |
| 12320 | } |
| 12321 | } |
| 12322 | |
| 12323 | // The class body scope holds any private names. Those mustn't be visible in |
| 12324 | // the heritage expression and hence the scope must be emitted after the |
| 12325 | // heritage expression. |
| 12326 | if (ClassBodyScopeNode* bodyScopeBindings = classNode->bodyScopeBindings()) { |
| 12327 | if (!ce.emitBodyScope(bodyScopeBindings->scopeBindings())) { |
| 12328 | // [stack] HERITAGE |
| 12329 | return false; |
| 12330 | } |
| 12331 | |
| 12332 | // The spec does not say anything about private brands being symbols. It's |
| 12333 | // an implementation detail. So we can give the special private brand |
| 12334 | // symbol any description we want and users won't normally see it. For |
| 12335 | // debugging, use the class name. |
| 12336 | auto privateBrandName = innerName; |
| 12337 | if (!innerName) { |
| 12338 | privateBrandName = nameForAnonymousClass |
| 12339 | ? nameForAnonymousClass |
| 12340 | : TaggedParserAtomIndex::WellKnown::anonymous(); |
| 12341 | } |
| 12342 | if (!emitNewPrivateNames(privateBrandName, classMembers)) { |
| 12343 | return false; |
| 12344 | } |
| 12345 | } |
| 12346 | |
| 12347 | bool hasNameOnStack = nameKind == ClassNameKind::ComputedName; |
| 12348 | if (isDerived) { |
| 12349 | if (!ce.emitDerivedClass(innerName, nameForAnonymousClass, |
| 12350 | hasNameOnStack)) { |
| 12351 | // [stack] HOMEOBJ HERITAGE |
| 12352 | return false; |
| 12353 | } |
| 12354 | } else { |
| 12355 | int membersCount = 0; |
| 12356 | for (ParseNode* node : classMembers->contents()) { |
| 12357 | if (node->getKind() == ParseNodeKind::ClassField) { |
| 12358 | membersCount++; |
| 12359 | } |
| 12360 | } |
| 12361 | membersCount = (membersCount > 255) ? 255 : membersCount; |
| 12362 | if (!ce.emitClass(innerName, nameForAnonymousClass, hasNameOnStack, |
| 12363 | uint8_t(membersCount))) { |
| 12364 | // [stack] HOMEOBJ |
| 12365 | return false; |
| 12366 | } |
| 12367 | } |
| 12368 | |
| 12369 | // Stack currently has HOMEOBJ followed by optional HERITAGE. When HERITAGE |
| 12370 | // is not used, an implicit value of %FunctionPrototype% is implied. |
| 12371 | |
| 12372 | // See |Parser::classMember(...)| for the reason why |.initializers| is |
| 12373 | // created within its own scope. |
| 12374 | Maybe<LexicalScopeEmitter> lse; |
| 12375 | FunctionNode* ctor; |
| 12376 | #ifdef ENABLE_DECORATORS |
| 12377 | bool extraInitializersPresent = false; |
| 12378 | #endif |
| 12379 | if (constructor->is<LexicalScopeNode>()) { |
| 12380 | LexicalScopeNode* constructorScope = &constructor->as<LexicalScopeNode>(); |
| 12381 | |
| 12382 | MOZ_ASSERT(!constructorScope->isEmptyScope())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!constructorScope->isEmptyScope())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!constructorScope->isEmptyScope ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("!constructorScope->isEmptyScope()", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 12382); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!constructorScope->isEmptyScope()" ")"); do { MOZ_CrashSequence(__null, 12382); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12383 | #ifdef ENABLE_DECORATORS |
| 12384 | // With decorators enabled we expect to see |.initializers|, |
| 12385 | // and |.instanceExtraInitializers| in this scope. |
| 12386 | MOZ_ASSERT(constructorScope->scopeBindings()->length == 2)do { static_assert( mozilla::detail::AssertionConditionType< decltype(constructorScope->scopeBindings()->length == 2 )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(constructorScope->scopeBindings()->length == 2 ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "constructorScope->scopeBindings()->length == 2", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 12386); AnnotateMozCrashReason("MOZ_ASSERT" "(" "constructorScope->scopeBindings()->length == 2" ")"); do { MOZ_CrashSequence(__null, 12386); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12387 | MOZ_ASSERT(GetScopeDataTrailingNames(constructorScope->scopeBindings())[0]do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12389) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" ")"); do { MOZ_CrashSequence(__null, 12389); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12388 | .name() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12389) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" ")"); do { MOZ_CrashSequence(__null, 12389); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12389 | TaggedParserAtomIndex::WellKnown::dot_initializers_())do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12389) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" ")"); do { MOZ_CrashSequence(__null, 12389); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12390 | MOZ_ASSERT(do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12393) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_()" ")"); do { MOZ_CrashSequence(__null, 12393); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12391 | GetScopeDataTrailingNames(constructorScope->scopeBindings())[1]do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12393) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_()" ")"); do { MOZ_CrashSequence(__null, 12393); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12392 | .name() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12393) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_()" ")"); do { MOZ_CrashSequence(__null, 12393); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12393 | TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_())do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12393) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[1] .name() == TaggedParserAtomIndex::WellKnown::dot_instanceExtraInitializers_()" ")"); do { MOZ_CrashSequence(__null, 12393); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12394 | |
| 12395 | // We should only call this code if we know decorators are present, see bug |
| 12396 | // 1871147. |
| 12397 | lse.emplace(this); |
| 12398 | if (!lse->emitScope(ScopeKind::Lexical, |
| 12399 | constructorScope->scopeBindings())) { |
| 12400 | return false; |
| 12401 | } |
| 12402 | |
| 12403 | // TODO: See bug 1868220 for support for static extra initializers. |
| 12404 | if (!ce.prepareForExtraInitializers(TaggedParserAtomIndex::WellKnown:: |
| 12405 | dot_instanceExtraInitializers_())) { |
| 12406 | return false; |
| 12407 | } |
| 12408 | |
| 12409 | if (classNode->addInitializerFunction()) { |
| 12410 | DecoratorEmitter de(this); |
| 12411 | if (!de.emitCreateAddInitializerFunction( |
| 12412 | classNode->addInitializerFunction(), |
| 12413 | TaggedParserAtomIndex::WellKnown:: |
| 12414 | dot_instanceExtraInitializers_())) { |
| 12415 | // [stack] HOMEOBJ HERITAGE? ADDINIT |
| 12416 | return false; |
| 12417 | } |
| 12418 | |
| 12419 | if (!emitUnpickN(isDerived ? 2 : 1)) { |
| 12420 | // [stack] ADDINIT HOMEOBJ HERITAGE? |
| 12421 | return false; |
| 12422 | } |
| 12423 | |
| 12424 | extraInitializersPresent = true; |
| 12425 | } |
| 12426 | #else |
| 12427 | // The constructor scope should only contain the |.initializers| binding. |
| 12428 | MOZ_ASSERT(constructorScope->scopeBindings()->length == 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(constructorScope->scopeBindings()->length == 1 )>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(constructorScope->scopeBindings()->length == 1 ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "constructorScope->scopeBindings()->length == 1", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 12428); AnnotateMozCrashReason("MOZ_ASSERT" "(" "constructorScope->scopeBindings()->length == 1" ")"); do { MOZ_CrashSequence(__null, 12428); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12429 | MOZ_ASSERT(GetScopeDataTrailingNames(constructorScope->scopeBindings())[0]do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12431) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" ")"); do { MOZ_CrashSequence(__null, 12431); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12430 | .name() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12431) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" ")"); do { MOZ_CrashSequence(__null, 12431); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12431 | TaggedParserAtomIndex::WellKnown::dot_initializers_())do { static_assert( mozilla::detail::AssertionConditionType< decltype(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ())>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(GetScopeDataTrailingNames(constructorScope->scopeBindings ())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_ ()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12431) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "GetScopeDataTrailingNames(constructorScope->scopeBindings())[0] .name() == TaggedParserAtomIndex::WellKnown::dot_initializers_()" ")"); do { MOZ_CrashSequence(__null, 12431); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12432 | #endif |
| 12433 | |
| 12434 | auto needsInitializer = [](ParseNode* propdef) { |
| 12435 | return NeedsFieldInitializer(propdef, false) || |
| 12436 | NeedsAccessorInitializer(propdef, false); |
| 12437 | }; |
| 12438 | |
| 12439 | // As an optimization omit the |.initializers| binding when no instance |
| 12440 | // fields or private methods are present. |
| 12441 | bool needsInitializers = |
| 12442 | std::any_of(classMembers->contents().begin(), |
| 12443 | classMembers->contents().end(), needsInitializer); |
| 12444 | if (needsInitializers) { |
| 12445 | #ifndef ENABLE_DECORATORS |
| 12446 | lse.emplace(this); |
| 12447 | if (!lse->emitScope(ScopeKind::Lexical, |
| 12448 | constructorScope->scopeBindings())) { |
| 12449 | return false; |
| 12450 | } |
| 12451 | #endif |
| 12452 | // Any class with field initializers will have a constructor |
| 12453 | if (!emitCreateMemberInitializers(ce, classMembers, |
| 12454 | FieldPlacement::Instance |
| 12455 | #ifdef ENABLE_DECORATORS |
| 12456 | , |
| 12457 | isDerived |
| 12458 | #endif |
| 12459 | )) { |
| 12460 | return false; |
| 12461 | } |
| 12462 | } |
| 12463 | |
| 12464 | ctor = &constructorScope->scopeBody()->as<ClassMethod>().method(); |
| 12465 | } else { |
| 12466 | // The |.initializers| binding is never emitted when in self-hosting mode. |
| 12467 | MOZ_ASSERT(emitterMode == BytecodeEmitter::SelfHosting)do { static_assert( mozilla::detail::AssertionConditionType< decltype(emitterMode == BytecodeEmitter::SelfHosting)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(emitterMode == BytecodeEmitter::SelfHosting))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("emitterMode == BytecodeEmitter::SelfHosting" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12467) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "emitterMode == BytecodeEmitter::SelfHosting" ")"); do { MOZ_CrashSequence(__null, 12467); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12468 | ctor = &constructor->as<ClassMethod>().method(); |
| 12469 | } |
| 12470 | |
| 12471 | bool needsHomeObject = ctor->funbox()->needsHomeObject(); |
| 12472 | // HERITAGE is consumed inside emitFunction. |
| 12473 | if (nameKind == ClassNameKind::InferredName) { |
| 12474 | setFunName(ctor->funbox(), nameForAnonymousClass); |
| 12475 | } |
| 12476 | if (!emitFunction(ctor, isDerived)) { |
| 12477 | // [stack] HOMEOBJ CTOR |
| 12478 | return false; |
| 12479 | } |
| 12480 | if (lse.isSome()) { |
| 12481 | if (!lse->emitEnd()) { |
| 12482 | return false; |
| 12483 | } |
| 12484 | lse.reset(); |
| 12485 | } |
| 12486 | if (!ce.emitInitConstructor(needsHomeObject)) { |
| 12487 | // [stack] CTOR HOMEOBJ |
| 12488 | return false; |
| 12489 | } |
| 12490 | |
| 12491 | if (!emitCreateFieldKeys(classMembers, FieldPlacement::Instance)) { |
| 12492 | return false; |
| 12493 | } |
| 12494 | |
| 12495 | #ifdef ENABLE_DECORATORS |
| 12496 | // TODO: See Bug 1868220 for support for static extra initializers. |
| 12497 | if (!emit1(JSOp::Undefined)) { |
| 12498 | // [stack] ADDINIT? CTOR HOMEOBJ UNDEFINED |
| 12499 | return false; |
| 12500 | } |
| 12501 | if (!emitUnpickN(2)) { |
| 12502 | // [stack] ADDINIT? UNDEFINED CTOR HOMEOBJ |
| 12503 | return false; |
| 12504 | } |
| 12505 | #endif |
| 12506 | |
| 12507 | if (!emitCreateMemberInitializers(ce, classMembers, FieldPlacement::Static |
| 12508 | #ifdef ENABLE_DECORATORS |
| 12509 | , |
| 12510 | false |
| 12511 | #endif |
| 12512 | )) { |
| 12513 | return false; |
| 12514 | } |
| 12515 | |
| 12516 | #ifdef ENABLE_DECORATORS |
| 12517 | if (!emitPickN(2)) { |
| 12518 | // [stack] ADDINIT? CTOR HOMEOBJ UNDEFINED |
| 12519 | return false; |
| 12520 | } |
| 12521 | if (!emitPopN(1)) { |
| 12522 | // [stack] ADDINIT? CTOR HOMEOBJ |
| 12523 | return false; |
| 12524 | } |
| 12525 | #endif |
| 12526 | |
| 12527 | if (!emitCreateFieldKeys(classMembers, FieldPlacement::Static)) { |
| 12528 | return false; |
| 12529 | } |
| 12530 | |
| 12531 | if (!emitPropertyList(classMembers, ce, ClassBody)) { |
| 12532 | // [stack] CTOR HOMEOBJ |
| 12533 | return false; |
| 12534 | } |
| 12535 | |
| 12536 | #ifdef ENABLE_DECORATORS |
| 12537 | if (extraInitializersPresent) { |
| 12538 | if (!emitPickN(2)) { |
| 12539 | // [stack] CTOR HOMEOBJ ADDINIT |
| 12540 | return false; |
| 12541 | } |
| 12542 | if (!emitPopN(1)) { |
| 12543 | // [stack] CTOR HOMEOBJ |
| 12544 | return false; |
| 12545 | } |
| 12546 | } |
| 12547 | #endif |
| 12548 | |
| 12549 | if (!ce.emitBinding()) { |
| 12550 | // [stack] CTOR |
| 12551 | return false; |
| 12552 | } |
| 12553 | |
| 12554 | if (!emitInitializeStaticFields(classMembers)) { |
| 12555 | // [stack] CTOR |
| 12556 | return false; |
| 12557 | } |
| 12558 | |
| 12559 | #if ENABLE_DECORATORS |
| 12560 | if (!ce.prepareForDecorators()) { |
| 12561 | // [stack] CTOR |
| 12562 | return false; |
| 12563 | } |
| 12564 | if (classNode->decorators() != nullptr) { |
| 12565 | DecoratorEmitter de(this); |
| 12566 | NameNode* className = |
| 12567 | classNode->names() ? classNode->names()->innerBinding() : nullptr; |
| 12568 | if (!de.emitApplyDecoratorsToClassDefinition(className, |
| 12569 | classNode->decorators())) { |
| 12570 | // [stack] CTOR |
| 12571 | return false; |
| 12572 | } |
| 12573 | } |
| 12574 | #endif |
| 12575 | |
| 12576 | if (!ce.emitEnd(kind)) { |
| 12577 | // [stack] # class declaration |
| 12578 | // [stack] |
| 12579 | // [stack] # class expression |
| 12580 | // [stack] CTOR |
| 12581 | return false; |
| 12582 | } |
| 12583 | |
| 12584 | return true; |
| 12585 | } |
| 12586 | |
| 12587 | bool BytecodeEmitter::emitExportDefault(BinaryNode* exportNode) { |
| 12588 | MOZ_ASSERT(exportNode->isKind(ParseNodeKind::ExportDefaultStmt))do { static_assert( mozilla::detail::AssertionConditionType< decltype(exportNode->isKind(ParseNodeKind::ExportDefaultStmt ))>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(exportNode->isKind(ParseNodeKind::ExportDefaultStmt )))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("exportNode->isKind(ParseNodeKind::ExportDefaultStmt)", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 12588); AnnotateMozCrashReason("MOZ_ASSERT" "(" "exportNode->isKind(ParseNodeKind::ExportDefaultStmt)" ")"); do { MOZ_CrashSequence(__null, 12588); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12589 | |
| 12590 | ParseNode* valueNode = exportNode->left(); |
| 12591 | if (valueNode->isDirectRHSAnonFunction()) { |
| 12592 | MOZ_ASSERT(exportNode->right())do { static_assert( mozilla::detail::AssertionConditionType< decltype(exportNode->right())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(exportNode->right()))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("exportNode->right()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12592) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "exportNode->right()" ")"); do { MOZ_CrashSequence(__null, 12592); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12593 | |
| 12594 | if (!emitAnonymousFunctionWithName( |
| 12595 | valueNode, TaggedParserAtomIndex::WellKnown::default_())) { |
| 12596 | return false; |
| 12597 | } |
| 12598 | } else { |
| 12599 | if (!emitTree(valueNode)) { |
| 12600 | return false; |
| 12601 | } |
| 12602 | } |
| 12603 | |
| 12604 | if (ParseNode* binding = exportNode->right()) { |
| 12605 | if (!emitLexicalInitialization(&binding->as<NameNode>())) { |
| 12606 | return false; |
| 12607 | } |
| 12608 | |
| 12609 | if (!emit1(JSOp::Pop)) { |
| 12610 | return false; |
| 12611 | } |
| 12612 | } |
| 12613 | |
| 12614 | return true; |
| 12615 | } |
| 12616 | |
| 12617 | bool BytecodeEmitter::emitTree( |
| 12618 | ParseNode* pn, ValueUsage valueUsage /* = ValueUsage::WantValue */, |
| 12619 | EmitLineNumberNote emitLineNote /* = EMIT_LINENOTE */) { |
| 12620 | AutoCheckRecursionLimit recursion(fc); |
| 12621 | if (!recursion.check(fc)) { |
| 12622 | return false; |
| 12623 | } |
| 12624 | |
| 12625 | /* Emit notes to tell the current bytecode's source line number. |
| 12626 | However, a couple trees require special treatment; see the |
| 12627 | relevant emitter functions for details. */ |
| 12628 | if (emitLineNote == EMIT_LINENOTE && |
| 12629 | !ParseNodeRequiresSpecialLineNumberNotes(pn)) { |
| 12630 | if (!updateLineNumberNotes(pn->pn_pos.begin)) { |
| 12631 | return false; |
| 12632 | } |
| 12633 | } |
| 12634 | |
| 12635 | switch (pn->getKind()) { |
| 12636 | case ParseNodeKind::Function: |
| 12637 | if (!emitFunction(&pn->as<FunctionNode>())) { |
| 12638 | return false; |
| 12639 | } |
| 12640 | break; |
| 12641 | |
| 12642 | case ParseNodeKind::ParamsBody: |
| 12643 | MOZ_ASSERT_UNREACHABLE(do { static_assert( mozilla::detail::AssertionConditionType< decltype(false)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(!!(false))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("false" " (" "MOZ_ASSERT_UNREACHABLE: " "ParamsBody should be handled in emitFunctionScript." ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 12644); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "ParamsBody should be handled in emitFunctionScript." ")"); do { MOZ_CrashSequence(__null, 12644); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 12644 | "ParamsBody should be handled in emitFunctionScript.")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: " "ParamsBody should be handled in emitFunctionScript." ")", "./../../../../js/src/frontend/BytecodeEmitter.cpp" , 12644); AnnotateMozCrashReason("MOZ_ASSERT" "(" "false" ") (" "MOZ_ASSERT_UNREACHABLE: " "ParamsBody should be handled in emitFunctionScript." ")"); do { MOZ_CrashSequence(__null, 12644); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12645 | break; |
| 12646 | |
| 12647 | case ParseNodeKind::IfStmt: |
| 12648 | if (!emitIf(&pn->as<TernaryNode>())) { |
| 12649 | return false; |
| 12650 | } |
| 12651 | break; |
| 12652 | |
| 12653 | case ParseNodeKind::SwitchStmt: |
| 12654 | if (!emitSwitch(&pn->as<SwitchStatement>())) { |
| 12655 | return false; |
| 12656 | } |
| 12657 | break; |
| 12658 | |
| 12659 | case ParseNodeKind::WhileStmt: |
| 12660 | if (!emitWhile(&pn->as<BinaryNode>())) { |
| 12661 | return false; |
| 12662 | } |
| 12663 | break; |
| 12664 | |
| 12665 | case ParseNodeKind::DoWhileStmt: |
| 12666 | if (!emitDo(&pn->as<BinaryNode>())) { |
| 12667 | return false; |
| 12668 | } |
| 12669 | break; |
| 12670 | |
| 12671 | case ParseNodeKind::ForStmt: |
| 12672 | if (!emitFor(&pn->as<ForNode>())) { |
| 12673 | return false; |
| 12674 | } |
| 12675 | break; |
| 12676 | |
| 12677 | case ParseNodeKind::BreakStmt: |
| 12678 | // Ensure that the column of the 'break' is set properly. |
| 12679 | if (!updateSourceCoordNotes(pn->pn_pos.begin)) { |
| 12680 | return false; |
| 12681 | } |
| 12682 | if (!markStepBreakpoint()) { |
| 12683 | return false; |
| 12684 | } |
| 12685 | |
| 12686 | if (!emitBreak(pn->as<BreakStatement>().label())) { |
| 12687 | return false; |
| 12688 | } |
| 12689 | break; |
| 12690 | |
| 12691 | case ParseNodeKind::ContinueStmt: |
| 12692 | // Ensure that the column of the 'continue' is set properly. |
| 12693 | if (!updateSourceCoordNotes(pn->pn_pos.begin)) { |
| 12694 | return false; |
| 12695 | } |
| 12696 | if (!markStepBreakpoint()) { |
| 12697 | return false; |
| 12698 | } |
| 12699 | |
| 12700 | if (!emitContinue(pn->as<ContinueStatement>().label())) { |
| 12701 | return false; |
| 12702 | } |
| 12703 | break; |
| 12704 | |
| 12705 | case ParseNodeKind::WithStmt: |
| 12706 | if (!emitWith(&pn->as<BinaryNode>())) { |
| 12707 | return false; |
| 12708 | } |
| 12709 | break; |
| 12710 | |
| 12711 | case ParseNodeKind::TryStmt: |
| 12712 | if (!emitTry(&pn->as<TryNode>())) { |
| 12713 | return false; |
| 12714 | } |
| 12715 | break; |
| 12716 | |
| 12717 | case ParseNodeKind::Catch: |
| 12718 | if (!emitCatch(&pn->as<BinaryNode>())) { |
| 12719 | return false; |
| 12720 | } |
| 12721 | break; |
| 12722 | |
| 12723 | case ParseNodeKind::VarStmt: |
| 12724 | if (!emitDeclarationList(&pn->as<ListNode>())) { |
| 12725 | return false; |
| 12726 | } |
| 12727 | break; |
| 12728 | |
| 12729 | case ParseNodeKind::ReturnStmt: |
| 12730 | if (!emitReturn(&pn->as<UnaryNode>())) { |
| 12731 | return false; |
| 12732 | } |
| 12733 | break; |
| 12734 | |
| 12735 | case ParseNodeKind::YieldStarExpr: |
| 12736 | if (!emitYieldStar(pn->as<UnaryNode>().kid())) { |
| 12737 | return false; |
| 12738 | } |
| 12739 | break; |
| 12740 | |
| 12741 | case ParseNodeKind::Generator: |
| 12742 | if (!emit1(JSOp::Generator)) { |
| 12743 | return false; |
| 12744 | } |
| 12745 | break; |
| 12746 | |
| 12747 | case ParseNodeKind::InitialYield: |
| 12748 | if (!emitInitialYield(&pn->as<UnaryNode>())) { |
| 12749 | return false; |
| 12750 | } |
| 12751 | break; |
| 12752 | |
| 12753 | case ParseNodeKind::YieldExpr: |
| 12754 | if (!emitYield(&pn->as<UnaryNode>())) { |
| 12755 | return false; |
| 12756 | } |
| 12757 | break; |
| 12758 | |
| 12759 | case ParseNodeKind::AwaitExpr: |
| 12760 | if (!emitAwaitInInnermostScope(&pn->as<UnaryNode>())) { |
| 12761 | return false; |
| 12762 | } |
| 12763 | break; |
| 12764 | |
| 12765 | case ParseNodeKind::StatementList: |
| 12766 | if (!emitStatementList(&pn->as<ListNode>())) { |
| 12767 | return false; |
| 12768 | } |
| 12769 | break; |
| 12770 | |
| 12771 | case ParseNodeKind::EmptyStmt: |
| 12772 | break; |
| 12773 | |
| 12774 | case ParseNodeKind::ExpressionStmt: |
| 12775 | if (!emitExpressionStatement(&pn->as<UnaryNode>())) { |
| 12776 | return false; |
| 12777 | } |
| 12778 | break; |
| 12779 | |
| 12780 | case ParseNodeKind::LabelStmt: |
| 12781 | if (!emitLabeledStatement(&pn->as<LabeledStatement>())) { |
| 12782 | return false; |
| 12783 | } |
| 12784 | break; |
| 12785 | |
| 12786 | case ParseNodeKind::CommaExpr: |
| 12787 | if (!emitSequenceExpr(&pn->as<ListNode>(), valueUsage)) { |
| 12788 | return false; |
| 12789 | } |
| 12790 | break; |
| 12791 | |
| 12792 | case ParseNodeKind::InitExpr: |
| 12793 | case ParseNodeKind::AssignExpr: |
| 12794 | case ParseNodeKind::AddAssignExpr: |
| 12795 | case ParseNodeKind::SubAssignExpr: |
| 12796 | case ParseNodeKind::BitOrAssignExpr: |
| 12797 | case ParseNodeKind::BitXorAssignExpr: |
| 12798 | case ParseNodeKind::BitAndAssignExpr: |
| 12799 | case ParseNodeKind::LshAssignExpr: |
| 12800 | case ParseNodeKind::RshAssignExpr: |
| 12801 | case ParseNodeKind::UrshAssignExpr: |
| 12802 | case ParseNodeKind::MulAssignExpr: |
| 12803 | case ParseNodeKind::DivAssignExpr: |
| 12804 | case ParseNodeKind::ModAssignExpr: |
| 12805 | case ParseNodeKind::PowAssignExpr: { |
| 12806 | BinaryNode* assignNode = &pn->as<BinaryNode>(); |
| 12807 | if (!emitAssignmentOrInit(assignNode->getKind(), assignNode->left(), |
| 12808 | assignNode->right())) { |
| 12809 | return false; |
| 12810 | } |
| 12811 | break; |
| 12812 | } |
| 12813 | |
| 12814 | case ParseNodeKind::CoalesceAssignExpr: |
| 12815 | case ParseNodeKind::OrAssignExpr: |
| 12816 | case ParseNodeKind::AndAssignExpr: |
| 12817 | if (!emitShortCircuitAssignment(&pn->as<AssignmentNode>())) { |
| 12818 | return false; |
| 12819 | } |
| 12820 | break; |
| 12821 | |
| 12822 | case ParseNodeKind::ConditionalExpr: |
| 12823 | if (!emitConditionalExpression(pn->as<ConditionalExpression>(), |
| 12824 | valueUsage)) { |
| 12825 | return false; |
| 12826 | } |
| 12827 | break; |
| 12828 | |
| 12829 | case ParseNodeKind::OrExpr: |
| 12830 | case ParseNodeKind::CoalesceExpr: |
| 12831 | case ParseNodeKind::AndExpr: |
| 12832 | if (!emitShortCircuit(&pn->as<ListNode>(), valueUsage)) { |
| 12833 | return false; |
| 12834 | } |
| 12835 | break; |
| 12836 | |
| 12837 | case ParseNodeKind::StrictEqExpr: |
| 12838 | case ParseNodeKind::EqExpr: |
| 12839 | case ParseNodeKind::StrictNeExpr: |
| 12840 | case ParseNodeKind::NeExpr: |
| 12841 | case ParseNodeKind::LtExpr: |
| 12842 | case ParseNodeKind::GtExpr: { |
| 12843 | bool emitted; |
| 12844 | if (!tryEmitTypeofEq(&pn->as<ListNode>(), &emitted)) { |
| 12845 | return false; |
| 12846 | } |
| 12847 | if (emitted) { |
| 12848 | return true; |
| 12849 | } |
| 12850 | } |
| 12851 | [[fallthrough]]; |
| 12852 | |
| 12853 | case ParseNodeKind::AddExpr: |
| 12854 | case ParseNodeKind::SubExpr: |
| 12855 | case ParseNodeKind::BitOrExpr: |
| 12856 | case ParseNodeKind::BitXorExpr: |
| 12857 | case ParseNodeKind::BitAndExpr: |
| 12858 | case ParseNodeKind::LeExpr: |
| 12859 | case ParseNodeKind::GeExpr: |
| 12860 | case ParseNodeKind::InExpr: |
| 12861 | case ParseNodeKind::InstanceOfExpr: |
| 12862 | case ParseNodeKind::LshExpr: |
| 12863 | case ParseNodeKind::RshExpr: |
| 12864 | case ParseNodeKind::UrshExpr: |
| 12865 | case ParseNodeKind::MulExpr: |
| 12866 | case ParseNodeKind::DivExpr: |
| 12867 | case ParseNodeKind::ModExpr: |
| 12868 | if (!emitLeftAssociative(&pn->as<ListNode>())) { |
| 12869 | return false; |
| 12870 | } |
| 12871 | break; |
| 12872 | |
| 12873 | case ParseNodeKind::PrivateInExpr: |
| 12874 | if (!emitPrivateInExpr(&pn->as<ListNode>())) { |
| 12875 | return false; |
| 12876 | } |
| 12877 | break; |
| 12878 | |
| 12879 | case ParseNodeKind::PowExpr: |
| 12880 | if (!emitRightAssociative(&pn->as<ListNode>())) { |
| 12881 | return false; |
| 12882 | } |
| 12883 | break; |
| 12884 | |
| 12885 | case ParseNodeKind::TypeOfNameExpr: |
| 12886 | if (!emitTypeof(&pn->as<UnaryNode>(), JSOp::Typeof)) { |
| 12887 | return false; |
| 12888 | } |
| 12889 | break; |
| 12890 | |
| 12891 | case ParseNodeKind::TypeOfExpr: |
| 12892 | if (!emitTypeof(&pn->as<UnaryNode>(), JSOp::TypeofExpr)) { |
| 12893 | return false; |
| 12894 | } |
| 12895 | break; |
| 12896 | |
| 12897 | case ParseNodeKind::ThrowStmt: |
| 12898 | if (!updateSourceCoordNotes(pn->pn_pos.begin)) { |
| 12899 | return false; |
| 12900 | } |
| 12901 | if (!markStepBreakpoint()) { |
| 12902 | return false; |
| 12903 | } |
| 12904 | [[fallthrough]]; |
| 12905 | case ParseNodeKind::VoidExpr: |
| 12906 | case ParseNodeKind::NotExpr: |
| 12907 | case ParseNodeKind::BitNotExpr: |
| 12908 | case ParseNodeKind::PosExpr: |
| 12909 | case ParseNodeKind::NegExpr: |
| 12910 | if (!emitUnary(&pn->as<UnaryNode>())) { |
| 12911 | return false; |
| 12912 | } |
| 12913 | break; |
| 12914 | |
| 12915 | case ParseNodeKind::PreIncrementExpr: |
| 12916 | case ParseNodeKind::PreDecrementExpr: |
| 12917 | case ParseNodeKind::PostIncrementExpr: |
| 12918 | case ParseNodeKind::PostDecrementExpr: |
| 12919 | if (!emitIncOrDec(&pn->as<UnaryNode>(), valueUsage)) { |
| 12920 | return false; |
| 12921 | } |
| 12922 | break; |
| 12923 | |
| 12924 | case ParseNodeKind::DeleteNameExpr: |
| 12925 | if (!emitDeleteName(&pn->as<UnaryNode>())) { |
| 12926 | return false; |
| 12927 | } |
| 12928 | break; |
| 12929 | |
| 12930 | case ParseNodeKind::DeletePropExpr: |
| 12931 | if (!emitDeleteProperty(&pn->as<UnaryNode>())) { |
| 12932 | return false; |
| 12933 | } |
| 12934 | break; |
| 12935 | |
| 12936 | case ParseNodeKind::DeleteElemExpr: |
| 12937 | if (!emitDeleteElement(&pn->as<UnaryNode>())) { |
| 12938 | return false; |
| 12939 | } |
| 12940 | break; |
| 12941 | |
| 12942 | case ParseNodeKind::DeleteExpr: |
| 12943 | if (!emitDeleteExpression(&pn->as<UnaryNode>())) { |
| 12944 | return false; |
| 12945 | } |
| 12946 | break; |
| 12947 | |
| 12948 | case ParseNodeKind::DeleteOptionalChainExpr: |
| 12949 | if (!emitDeleteOptionalChain(&pn->as<UnaryNode>())) { |
| 12950 | return false; |
| 12951 | } |
| 12952 | break; |
| 12953 | |
| 12954 | case ParseNodeKind::OptionalChain: |
| 12955 | if (!emitOptionalChain(&pn->as<UnaryNode>(), valueUsage)) { |
| 12956 | return false; |
| 12957 | } |
| 12958 | break; |
| 12959 | |
| 12960 | case ParseNodeKind::DotExpr: { |
| 12961 | PropertyAccess* prop = &pn->as<PropertyAccess>(); |
| 12962 | bool isSuper = prop->isSuper(); |
| 12963 | PropOpEmitter poe(this, PropOpEmitter::Kind::Get, |
| 12964 | isSuper ? PropOpEmitter::ObjKind::Super |
| 12965 | : PropOpEmitter::ObjKind::Other); |
| 12966 | if (!poe.prepareForObj()) { |
| 12967 | return false; |
| 12968 | } |
| 12969 | if (isSuper) { |
| 12970 | UnaryNode* base = &prop->expression().as<UnaryNode>(); |
| 12971 | if (!emitGetThisForSuperBase(base)) { |
| 12972 | // [stack] THIS |
| 12973 | return false; |
| 12974 | } |
| 12975 | } else { |
| 12976 | if (!emitPropLHS(prop)) { |
| 12977 | // [stack] OBJ |
| 12978 | return false; |
| 12979 | } |
| 12980 | } |
| 12981 | if (!poe.emitGet(prop->key().atom())) { |
| 12982 | // [stack] PROP |
| 12983 | return false; |
| 12984 | } |
| 12985 | break; |
| 12986 | } |
| 12987 | |
| 12988 | case ParseNodeKind::ArgumentsLength: { |
| 12989 | if (!emitArgumentsLength()) { |
| 12990 | return false; |
| 12991 | } |
| 12992 | break; |
| 12993 | } |
| 12994 | |
| 12995 | case ParseNodeKind::ElemExpr: { |
| 12996 | PropertyByValue* elem = &pn->as<PropertyByValue>(); |
| 12997 | bool isSuper = elem->isSuper(); |
| 12998 | MOZ_ASSERT(!elem->key().isKind(ParseNodeKind::PrivateName))do { static_assert( mozilla::detail::AssertionConditionType< decltype(!elem->key().isKind(ParseNodeKind::PrivateName))> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(!elem->key().isKind(ParseNodeKind::PrivateName))) ), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!elem->key().isKind(ParseNodeKind::PrivateName)" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 12998) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "!elem->key().isKind(ParseNodeKind::PrivateName)" ")"); do { MOZ_CrashSequence(__null, 12998); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 12999 | ElemOpEmitter eoe(this, ElemOpEmitter::Kind::Get, |
| 13000 | isSuper ? ElemOpEmitter::ObjKind::Super |
| 13001 | : ElemOpEmitter::ObjKind::Other); |
| 13002 | if (!emitElemObjAndKey(elem, eoe)) { |
| 13003 | // [stack] # if Super |
| 13004 | // [stack] THIS KEY |
| 13005 | // [stack] # otherwise |
| 13006 | // [stack] OBJ KEY |
| 13007 | return false; |
| 13008 | } |
| 13009 | if (!eoe.emitGet()) { |
| 13010 | // [stack] ELEM |
| 13011 | return false; |
| 13012 | } |
| 13013 | |
| 13014 | break; |
| 13015 | } |
| 13016 | |
| 13017 | case ParseNodeKind::PrivateMemberExpr: { |
| 13018 | PrivateMemberAccess* privateExpr = &pn->as<PrivateMemberAccess>(); |
| 13019 | PrivateOpEmitter xoe(this, PrivateOpEmitter::Kind::Get, |
| 13020 | privateExpr->privateName().name()); |
| 13021 | if (!emitTree(&privateExpr->expression())) { |
| 13022 | // [stack] OBJ |
| 13023 | return false; |
| 13024 | } |
| 13025 | if (!xoe.emitReference()) { |
| 13026 | // [stack] OBJ NAME |
| 13027 | return false; |
| 13028 | } |
| 13029 | if (!xoe.emitGet()) { |
| 13030 | // [stack] VALUE |
| 13031 | return false; |
| 13032 | } |
| 13033 | |
| 13034 | break; |
| 13035 | } |
| 13036 | |
| 13037 | case ParseNodeKind::NewExpr: |
| 13038 | case ParseNodeKind::TaggedTemplateExpr: |
| 13039 | case ParseNodeKind::CallExpr: |
| 13040 | case ParseNodeKind::SuperCallExpr: |
| 13041 | if (!emitCallOrNew(&pn->as<CallNode>(), valueUsage)) { |
| 13042 | return false; |
| 13043 | } |
| 13044 | break; |
| 13045 | |
| 13046 | case ParseNodeKind::LexicalScope: |
| 13047 | if (!emitLexicalScope(&pn->as<LexicalScopeNode>())) { |
| 13048 | return false; |
| 13049 | } |
| 13050 | break; |
| 13051 | |
| 13052 | case ParseNodeKind::ConstDecl: |
| 13053 | case ParseNodeKind::LetDecl: |
| 13054 | if (!emitDeclarationList(&pn->as<ListNode>())) { |
| 13055 | return false; |
| 13056 | } |
| 13057 | break; |
| 13058 | case ParseNodeKind::AwaitUsingDecl: |
| 13059 | case ParseNodeKind::UsingDecl: |
| 13060 | if (!emitDeclarationList(&pn->as<ListNode>())) { |
| 13061 | return false; |
| 13062 | } |
| 13063 | break; |
| 13064 | |
| 13065 | case ParseNodeKind::ImportDecl: |
| 13066 | MOZ_ASSERT(sc->isModuleContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isModuleContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isModuleContext()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->isModuleContext()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13066) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isModuleContext()" ")"); do { MOZ_CrashSequence(__null, 13066); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13067 | break; |
| 13068 | |
| 13069 | case ParseNodeKind::ExportStmt: { |
| 13070 | MOZ_ASSERT(sc->isModuleContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isModuleContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isModuleContext()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->isModuleContext()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13070) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isModuleContext()" ")"); do { MOZ_CrashSequence(__null, 13070); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13071 | UnaryNode* node = &pn->as<UnaryNode>(); |
| 13072 | ParseNode* decl = node->kid(); |
| 13073 | if (decl->getKind() != ParseNodeKind::ExportSpecList) { |
| 13074 | if (!emitTree(decl)) { |
| 13075 | return false; |
| 13076 | } |
| 13077 | } |
| 13078 | break; |
| 13079 | } |
| 13080 | |
| 13081 | case ParseNodeKind::ExportDefaultStmt: |
| 13082 | MOZ_ASSERT(sc->isModuleContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isModuleContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isModuleContext()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->isModuleContext()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13082) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isModuleContext()" ")"); do { MOZ_CrashSequence(__null, 13082); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13083 | if (!emitExportDefault(&pn->as<BinaryNode>())) { |
| 13084 | return false; |
| 13085 | } |
| 13086 | break; |
| 13087 | |
| 13088 | case ParseNodeKind::ExportFromStmt: |
| 13089 | MOZ_ASSERT(sc->isModuleContext())do { static_assert( mozilla::detail::AssertionConditionType< decltype(sc->isModuleContext())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(sc->isModuleContext()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sc->isModuleContext()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13089) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "sc->isModuleContext()" ")"); do { MOZ_CrashSequence(__null, 13089); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13090 | break; |
| 13091 | |
| 13092 | case ParseNodeKind::CallSiteObj: |
| 13093 | if (!emitCallSiteObject(&pn->as<CallSiteNode>())) { |
| 13094 | return false; |
| 13095 | } |
| 13096 | break; |
| 13097 | |
| 13098 | case ParseNodeKind::ArrayExpr: |
| 13099 | if (!emitArrayLiteral(&pn->as<ListNode>())) { |
| 13100 | return false; |
| 13101 | } |
| 13102 | break; |
| 13103 | |
| 13104 | case ParseNodeKind::ObjectExpr: |
| 13105 | if (!emitObject(&pn->as<ListNode>())) { |
| 13106 | return false; |
| 13107 | } |
| 13108 | break; |
| 13109 | |
| 13110 | case ParseNodeKind::Name: |
| 13111 | if (!emitGetName(&pn->as<NameNode>())) { |
| 13112 | return false; |
| 13113 | } |
| 13114 | break; |
| 13115 | |
| 13116 | case ParseNodeKind::PrivateName: |
| 13117 | if (!emitGetPrivateName(&pn->as<NameNode>())) { |
| 13118 | return false; |
| 13119 | } |
| 13120 | break; |
| 13121 | |
| 13122 | case ParseNodeKind::TemplateStringListExpr: |
| 13123 | if (!emitTemplateString(&pn->as<ListNode>())) { |
| 13124 | return false; |
| 13125 | } |
| 13126 | break; |
| 13127 | |
| 13128 | case ParseNodeKind::TemplateStringExpr: |
| 13129 | case ParseNodeKind::StringExpr: |
| 13130 | if (!emitStringOp(JSOp::String, pn->as<NameNode>().atom())) { |
| 13131 | return false; |
| 13132 | } |
| 13133 | break; |
| 13134 | |
| 13135 | case ParseNodeKind::NumberExpr: |
| 13136 | if (!emitNumberOp(pn->as<NumericLiteral>().value())) { |
| 13137 | return false; |
| 13138 | } |
| 13139 | break; |
| 13140 | |
| 13141 | case ParseNodeKind::BigIntExpr: |
| 13142 | if (!emitBigIntOp(&pn->as<BigIntLiteral>())) { |
| 13143 | return false; |
| 13144 | } |
| 13145 | break; |
| 13146 | |
| 13147 | case ParseNodeKind::RegExpExpr: { |
| 13148 | GCThingIndex index; |
| 13149 | if (!perScriptData().gcThingList().append(&pn->as<RegExpLiteral>(), |
| 13150 | &index)) { |
| 13151 | return false; |
| 13152 | } |
| 13153 | if (!emitRegExp(index)) { |
| 13154 | return false; |
| 13155 | } |
| 13156 | break; |
| 13157 | } |
| 13158 | |
| 13159 | case ParseNodeKind::TrueExpr: |
| 13160 | if (!emit1(JSOp::True)) { |
| 13161 | return false; |
| 13162 | } |
| 13163 | break; |
| 13164 | case ParseNodeKind::FalseExpr: |
| 13165 | if (!emit1(JSOp::False)) { |
| 13166 | return false; |
| 13167 | } |
| 13168 | break; |
| 13169 | case ParseNodeKind::NullExpr: |
| 13170 | if (!emit1(JSOp::Null)) { |
| 13171 | return false; |
| 13172 | } |
| 13173 | break; |
| 13174 | case ParseNodeKind::RawUndefinedExpr: |
| 13175 | if (!emit1(JSOp::Undefined)) { |
| 13176 | return false; |
| 13177 | } |
| 13178 | break; |
| 13179 | |
| 13180 | case ParseNodeKind::ThisExpr: |
| 13181 | if (!emitThisLiteral(&pn->as<ThisLiteral>())) { |
| 13182 | return false; |
| 13183 | } |
| 13184 | break; |
| 13185 | |
| 13186 | case ParseNodeKind::DebuggerStmt: |
| 13187 | if (!updateSourceCoordNotes(pn->pn_pos.begin)) { |
| 13188 | return false; |
| 13189 | } |
| 13190 | if (!markStepBreakpoint()) { |
| 13191 | return false; |
| 13192 | } |
| 13193 | if (!emit1(JSOp::Debugger)) { |
| 13194 | return false; |
| 13195 | } |
| 13196 | break; |
| 13197 | |
| 13198 | case ParseNodeKind::ClassDecl: |
| 13199 | if (!emitClass(&pn->as<ClassNode>())) { |
| 13200 | return false; |
| 13201 | } |
| 13202 | break; |
| 13203 | |
| 13204 | case ParseNodeKind::NewTargetExpr: |
| 13205 | if (!emitNewTarget(&pn->as<NewTargetNode>())) { |
| 13206 | return false; |
| 13207 | } |
| 13208 | break; |
| 13209 | |
| 13210 | case ParseNodeKind::ImportMetaExpr: |
| 13211 | if (!emit1(JSOp::ImportMeta)) { |
| 13212 | return false; |
| 13213 | } |
| 13214 | break; |
| 13215 | |
| 13216 | case ParseNodeKind::CallImportExpr: { |
| 13217 | CallImportNode* callImport = &pn->as<CallImportNode>(); |
| 13218 | BinaryNode* spec = &callImport->right()->as<BinaryNode>(); |
| 13219 | |
| 13220 | if (!emitTree(spec->left())) { |
| 13221 | // [stack] specifier |
| 13222 | return false; |
| 13223 | } |
| 13224 | |
| 13225 | // import.source does not have an options parameter, so its spec always |
| 13226 | // carries a PosHolder in place of the options argument. |
| 13227 | if (!spec->right()->isKind(ParseNodeKind::PosHolder)) { |
| 13228 | // [stack] specifier options |
| 13229 | if (!emitTree(spec->right())) { |
| 13230 | return false; |
| 13231 | } |
| 13232 | } else { |
| 13233 | // [stack] specifier undefined |
| 13234 | if (!emit1(JSOp::Undefined)) { |
| 13235 | return false; |
| 13236 | } |
| 13237 | } |
| 13238 | |
| 13239 | if (!emit2(JSOp::DynamicImport, uint8_t(callImport->phase()))) { |
| 13240 | return false; |
| 13241 | } |
| 13242 | |
| 13243 | break; |
| 13244 | } |
| 13245 | |
| 13246 | case ParseNodeKind::SetThis: |
| 13247 | if (!emitSetThis(&pn->as<BinaryNode>())) { |
| 13248 | return false; |
| 13249 | } |
| 13250 | break; |
| 13251 | |
| 13252 | case ParseNodeKind::PropertyNameExpr: |
| 13253 | case ParseNodeKind::PosHolder: |
| 13254 | MOZ_FALLTHROUGH_ASSERT(do { do { } while (false); MOZ_ReportCrash("" "MOZ_FALLTHROUGH_ASSERT: " "Should never try to emit ParseNodeKind::PosHolder or ::Property" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13255) ; AnnotateMozCrashReason("MOZ_CRASH(" "MOZ_FALLTHROUGH_ASSERT: " "Should never try to emit ParseNodeKind::PosHolder or ::Property" ")"); do { MOZ_CrashSequence(__null, 13255); __attribute__(( nomerge)) ::abort(); } while (false); } while (false) |
| 13255 | "Should never try to emit ParseNodeKind::PosHolder or ::Property")do { do { } while (false); MOZ_ReportCrash("" "MOZ_FALLTHROUGH_ASSERT: " "Should never try to emit ParseNodeKind::PosHolder or ::Property" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13255) ; AnnotateMozCrashReason("MOZ_CRASH(" "MOZ_FALLTHROUGH_ASSERT: " "Should never try to emit ParseNodeKind::PosHolder or ::Property" ")"); do { MOZ_CrashSequence(__null, 13255); __attribute__(( nomerge)) ::abort(); } while (false); } while (false); |
| 13256 | |
| 13257 | default: |
| 13258 | MOZ_ASSERT(0)do { static_assert( mozilla::detail::AssertionConditionType< decltype(0)>::isValid, "invalid assertion condition"); if ( (__builtin_expect(!!(!(!!(0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("0", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13258 ); AnnotateMozCrashReason("MOZ_ASSERT" "(" "0" ")"); do { MOZ_CrashSequence (__null, 13258); __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
| 13259 | } |
| 13260 | |
| 13261 | return true; |
| 13262 | } |
| 13263 | |
| 13264 | static bool AllocSrcNote(FrontendContext* fc, SrcNotesVector& notes, |
| 13265 | unsigned size, unsigned* index) { |
| 13266 | size_t oldLength = notes.length(); |
| 13267 | |
| 13268 | if (MOZ_UNLIKELY(oldLength + size > MaxSrcNotesLength)(__builtin_expect(!!(oldLength + size > MaxSrcNotesLength) , 0))) { |
| 13269 | ReportAllocationOverflow(fc); |
| 13270 | return false; |
| 13271 | } |
| 13272 | |
| 13273 | if (!notes.growByUninitialized(size)) { |
| 13274 | return false; |
| 13275 | } |
| 13276 | |
| 13277 | *index = oldLength; |
| 13278 | return true; |
| 13279 | } |
| 13280 | |
| 13281 | bool BytecodeEmitter::addTryNote(TryNoteKind kind, uint32_t stackDepth, |
| 13282 | BytecodeOffset start, BytecodeOffset end) { |
| 13283 | MOZ_ASSERT(!inPrologue())do { static_assert( mozilla::detail::AssertionConditionType< decltype(!inPrologue())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(!inPrologue()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("!inPrologue()", "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13283); AnnotateMozCrashReason("MOZ_ASSERT" "(" "!inPrologue()" ")") ; do { MOZ_CrashSequence(__null, 13283); __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
| 13284 | return bytecodeSection().tryNoteList().append(kind, stackDepth, start, end); |
| 13285 | } |
| 13286 | |
| 13287 | bool BytecodeEmitter::newSrcNote(SrcNoteType type, unsigned* indexp) { |
| 13288 | SrcNotesVector& notes = bytecodeSection().notes(); |
| 13289 | unsigned index; |
| 13290 | |
| 13291 | /* |
| 13292 | * Compute delta from the last annotated bytecode's offset. If it's too |
| 13293 | * big to fit in sn, allocate one or more xdelta notes and reset sn. |
| 13294 | */ |
| 13295 | BytecodeOffset offset = bytecodeSection().offset(); |
| 13296 | ptrdiff_t delta = (offset - bytecodeSection().lastNoteOffset()).value(); |
| 13297 | bytecodeSection().setLastNoteOffset(offset); |
| 13298 | |
| 13299 | auto allocator = [&](unsigned size) -> SrcNote* { |
| 13300 | if (!AllocSrcNote(fc, notes, size, &index)) { |
| 13301 | return nullptr; |
| 13302 | } |
| 13303 | return ¬es[index]; |
| 13304 | }; |
| 13305 | |
| 13306 | if (!SrcNoteWriter::writeNote(type, delta, allocator)) { |
| 13307 | return false; |
| 13308 | } |
| 13309 | |
| 13310 | if (indexp) { |
| 13311 | *indexp = index; |
| 13312 | } |
| 13313 | |
| 13314 | if (type == SrcNoteType::NewLine || type == SrcNoteType::SetLine) { |
| 13315 | lastLineOnlySrcNoteIndex = index; |
| 13316 | } else { |
| 13317 | lastLineOnlySrcNoteIndex = LastSrcNoteIsNotLineOnly; |
| 13318 | } |
| 13319 | |
| 13320 | return true; |
| 13321 | } |
| 13322 | |
| 13323 | bool BytecodeEmitter::newSrcNote2(SrcNoteType type, ptrdiff_t offset, |
| 13324 | unsigned* indexp) { |
| 13325 | unsigned index; |
| 13326 | if (!newSrcNote(type, &index)) { |
| 13327 | return false; |
| 13328 | } |
| 13329 | if (!newSrcNoteOperand(offset)) { |
| 13330 | return false; |
| 13331 | } |
| 13332 | if (indexp) { |
| 13333 | *indexp = index; |
| 13334 | } |
| 13335 | return true; |
| 13336 | } |
| 13337 | |
| 13338 | bool BytecodeEmitter::convertLastNewLineToNewLineColumn( |
| 13339 | JS::LimitedColumnNumberOneOrigin column) { |
| 13340 | SrcNotesVector& notes = bytecodeSection().notes(); |
| 13341 | MOZ_ASSERT(lastLineOnlySrcNoteIndex == notes.length() - 1)do { static_assert( mozilla::detail::AssertionConditionType< decltype(lastLineOnlySrcNoteIndex == notes.length() - 1)>:: isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(lastLineOnlySrcNoteIndex == notes.length() - 1))), 0 ))) { do { } while (false); MOZ_ReportAssertionFailure("lastLineOnlySrcNoteIndex == notes.length() - 1" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13341) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "lastLineOnlySrcNoteIndex == notes.length() - 1" ")"); do { MOZ_CrashSequence(__null, 13341); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13342 | SrcNote* sn = ¬es[lastLineOnlySrcNoteIndex]; |
| 13343 | MOZ_ASSERT(sn->type() == SrcNoteType::NewLine)do { static_assert( mozilla::detail::AssertionConditionType< decltype(sn->type() == SrcNoteType::NewLine)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(sn->type() == SrcNoteType::NewLine))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sn->type() == SrcNoteType::NewLine" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13343) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "sn->type() == SrcNoteType::NewLine" ")"); do { MOZ_CrashSequence(__null, 13343); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13344 | |
| 13345 | SrcNoteWriter::convertNote(sn, SrcNoteType::NewLineColumn); |
| 13346 | if (!newSrcNoteOperand(SrcNote::NewLineColumn::toOperand(column))) { |
| 13347 | return false; |
| 13348 | } |
| 13349 | |
| 13350 | lastLineOnlySrcNoteIndex = LastSrcNoteIsNotLineOnly; |
| 13351 | return true; |
| 13352 | } |
| 13353 | |
| 13354 | bool BytecodeEmitter::convertLastSetLineToSetLineColumn( |
| 13355 | JS::LimitedColumnNumberOneOrigin column) { |
| 13356 | SrcNotesVector& notes = bytecodeSection().notes(); |
| 13357 | // The Line operand is either 1 byte or 4 bytes. |
| 13358 | MOZ_ASSERT(lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 ||do { static_assert( mozilla::detail::AssertionConditionType< decltype(lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 || lastLineOnlySrcNoteIndex == notes.length() - 1 - 4)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 || lastLineOnlySrcNoteIndex == notes.length() - 1 - 4))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 || lastLineOnlySrcNoteIndex == notes.length() - 1 - 4" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13359) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 || lastLineOnlySrcNoteIndex == notes.length() - 1 - 4" ")"); do { MOZ_CrashSequence(__null, 13359); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 13359 | lastLineOnlySrcNoteIndex == notes.length() - 1 - 4)do { static_assert( mozilla::detail::AssertionConditionType< decltype(lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 || lastLineOnlySrcNoteIndex == notes.length() - 1 - 4)>::isValid , "invalid assertion condition"); if ((__builtin_expect(!!(!( !!(lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 || lastLineOnlySrcNoteIndex == notes.length() - 1 - 4))), 0))) { do { } while (false); MOZ_ReportAssertionFailure ("lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 || lastLineOnlySrcNoteIndex == notes.length() - 1 - 4" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13359) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "lastLineOnlySrcNoteIndex == notes.length() - 1 - 1 || lastLineOnlySrcNoteIndex == notes.length() - 1 - 4" ")"); do { MOZ_CrashSequence(__null, 13359); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13360 | SrcNote* sn = ¬es[lastLineOnlySrcNoteIndex]; |
| 13361 | MOZ_ASSERT(sn->type() == SrcNoteType::SetLine)do { static_assert( mozilla::detail::AssertionConditionType< decltype(sn->type() == SrcNoteType::SetLine)>::isValid, "invalid assertion condition"); if ((__builtin_expect(!!(!(! !(sn->type() == SrcNoteType::SetLine))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("sn->type() == SrcNoteType::SetLine" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13361) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "sn->type() == SrcNoteType::SetLine" ")"); do { MOZ_CrashSequence(__null, 13361); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13362 | |
| 13363 | SrcNoteWriter::convertNote(sn, SrcNoteType::SetLineColumn); |
| 13364 | if (!newSrcNoteOperand(SrcNote::SetLineColumn::columnToOperand(column))) { |
| 13365 | return false; |
| 13366 | } |
| 13367 | |
| 13368 | lastLineOnlySrcNoteIndex = LastSrcNoteIsNotLineOnly; |
| 13369 | return true; |
| 13370 | } |
| 13371 | |
| 13372 | bool BytecodeEmitter::newSrcNoteOperand(ptrdiff_t operand) { |
| 13373 | if (!SrcNote::isRepresentableOperand(operand)) { |
| 13374 | reportError(nullptr, JSMSG_NEED_DIET, "script"); |
| 13375 | return false; |
| 13376 | } |
| 13377 | |
| 13378 | SrcNotesVector& notes = bytecodeSection().notes(); |
| 13379 | |
| 13380 | auto allocator = [&](unsigned size) -> SrcNote* { |
| 13381 | unsigned index; |
| 13382 | if (!AllocSrcNote(fc, notes, size, &index)) { |
| 13383 | return nullptr; |
| 13384 | } |
| 13385 | return ¬es[index]; |
| 13386 | }; |
| 13387 | |
| 13388 | return SrcNoteWriter::writeOperand(operand, allocator); |
| 13389 | } |
| 13390 | |
| 13391 | bool BytecodeEmitter::intoScriptStencil(ScriptIndex scriptIndex) { |
| 13392 | js::UniquePtr<ImmutableScriptData> immutableScriptData = |
| 13393 | createImmutableScriptData(); |
| 13394 | if (!immutableScriptData) { |
| 13395 | return false; |
| 13396 | } |
| 13397 | |
| 13398 | MOZ_ASSERT(outermostScope().hasNonSyntacticScopeOnChain() ==do { static_assert( mozilla::detail::AssertionConditionType< decltype(outermostScope().hasNonSyntacticScopeOnChain() == sc ->hasNonSyntacticScope())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(outermostScope().hasNonSyntacticScopeOnChain () == sc->hasNonSyntacticScope()))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("outermostScope().hasNonSyntacticScopeOnChain() == sc->hasNonSyntacticScope()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13399) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "outermostScope().hasNonSyntacticScopeOnChain() == sc->hasNonSyntacticScope()" ")"); do { MOZ_CrashSequence(__null, 13399); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false) |
| 13399 | sc->hasNonSyntacticScope())do { static_assert( mozilla::detail::AssertionConditionType< decltype(outermostScope().hasNonSyntacticScopeOnChain() == sc ->hasNonSyntacticScope())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(outermostScope().hasNonSyntacticScopeOnChain () == sc->hasNonSyntacticScope()))), 0))) { do { } while ( false); MOZ_ReportAssertionFailure("outermostScope().hasNonSyntacticScopeOnChain() == sc->hasNonSyntacticScope()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13399) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "outermostScope().hasNonSyntacticScopeOnChain() == sc->hasNonSyntacticScope()" ")"); do { MOZ_CrashSequence(__null, 13399); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13400 | |
| 13401 | auto& things = perScriptData().gcThingList().objects(); |
| 13402 | if (!compilationState.appendGCThings(fc, scriptIndex, things)) { |
| 13403 | return false; |
| 13404 | } |
| 13405 | |
| 13406 | // Hand over the ImmutableScriptData instance generated by BCE. |
| 13407 | auto* sharedData = |
| 13408 | SharedImmutableScriptData::createWith(fc, std::move(immutableScriptData)); |
| 13409 | if (!sharedData) { |
| 13410 | return false; |
| 13411 | } |
| 13412 | |
| 13413 | // De-duplicate the bytecode within the runtime. |
| 13414 | if (!compilationState.sharedData.addAndShare(fc, scriptIndex, sharedData)) { |
| 13415 | return false; |
| 13416 | } |
| 13417 | |
| 13418 | ScriptStencil& script = compilationState.scriptData[scriptIndex]; |
| 13419 | script.setHasSharedData(); |
| 13420 | |
| 13421 | // Update flags specific to functions. |
| 13422 | if (sc->isFunctionBox()) { |
| 13423 | FunctionBox* funbox = sc->asFunctionBox(); |
| 13424 | MOZ_ASSERT(&script == &funbox->functionStencil())do { static_assert( mozilla::detail::AssertionConditionType< decltype(&script == &funbox->functionStencil())> ::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(&script == &funbox->functionStencil()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("&script == &funbox->functionStencil()" , "./../../../../js/src/frontend/BytecodeEmitter.cpp", 13424) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "&script == &funbox->functionStencil()" ")"); do { MOZ_CrashSequence(__null, 13424); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13425 | funbox->copyUpdatedImmutableFlags(); |
| 13426 | 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/frontend/BytecodeEmitter.cpp", 13426) ; AnnotateMozCrashReason("MOZ_ASSERT" "(" "script.isFunction()" ")"); do { MOZ_CrashSequence(__null, 13426); __attribute__(( nomerge)) ::abort(); } while (false); } } while (false); |
| 13427 | } else { |
| 13428 | ScriptStencilExtra& scriptExtra = compilationState.scriptExtra[scriptIndex]; |
| 13429 | sc->copyScriptExtraFields(scriptExtra); |
| 13430 | } |
| 13431 | |
| 13432 | return true; |
| 13433 | } |
| 13434 | |
| 13435 | SelfHostedIter BytecodeEmitter::getSelfHostedIterFor( |
| 13436 | ParseNode* parseNode) const { |
| 13437 | if (emitterMode == BytecodeEmitter::SelfHosting && |
| 13438 | parseNode->isKind(ParseNodeKind::CallExpr)) { |
| 13439 | auto* callee = parseNode->as<CallNode>().callee(); |
| 13440 | if (callee->isName(TaggedParserAtomIndex::WellKnown::allowContentIter())) { |
| 13441 | return SelfHostedIter::AllowContent; |
| 13442 | } |
| 13443 | if (callee->isName( |
| 13444 | TaggedParserAtomIndex::WellKnown::allowContentIterWith())) { |
| 13445 | return SelfHostedIter::AllowContentWith; |
| 13446 | } |
| 13447 | if (callee->isName( |
| 13448 | TaggedParserAtomIndex::WellKnown::allowContentIterWithNext())) { |
| 13449 | return SelfHostedIter::AllowContentWithNext; |
| 13450 | } |
| 13451 | } |
| 13452 | |
| 13453 | return SelfHostedIter::Deny; |
| 13454 | } |
| 13455 | |
| 13456 | #if defined(DEBUG1) || defined(JS_JITSPEW1) |
| 13457 | void BytecodeEmitter::dumpAtom(TaggedParserAtomIndex index) const { |
| 13458 | parserAtoms().dump(index); |
| 13459 | } |
| 13460 | #endif |