diff options
Diffstat (limited to 'js/src/frontend/SharedContext.h')
| -rw-r--r-- | js/src/frontend/SharedContext.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/js/src/frontend/SharedContext.h b/js/src/frontend/SharedContext.h index a6ac542f6..013444690 100644 --- a/js/src/frontend/SharedContext.h +++ b/js/src/frontend/SharedContext.h @@ -38,6 +38,7 @@ enum class StatementKind : uint8_t ForOfLoop, DoLoop, WhileLoop, + Class, // Used only by BytecodeEmitter. Spread @@ -450,6 +451,8 @@ class FunctionBox : public ObjectBox, public SharedContext uint32_t bufEnd; uint32_t startLine; uint32_t startColumn; + uint32_t toStringStart; + uint32_t toStringEnd; uint16_t length; uint8_t generatorKindBits_; /* The GeneratorKind of this function. */ @@ -472,12 +475,15 @@ class FunctionBox : public ObjectBox, public SharedContext bool usesThis:1; /* contains 'this' */ bool usesReturn:1; /* contains a 'return' statement */ bool hasRest_:1; /* has rest parameter */ + bool isExprBody_:1; /* arrow function with expression + * body or expression closure: + * function(x) x*x */ FunctionContextFlags funCxFlags; FunctionBox(ExclusiveContext* cx, LifoAlloc& alloc, ObjectBox* traceListHead, JSFunction* fun, - Directives directives, bool extraWarnings, GeneratorKind generatorKind, - FunctionAsyncKind asyncKind); + uint32_t toStringStart, Directives directives, bool extraWarnings, + GeneratorKind generatorKind, FunctionAsyncKind asyncKind); MutableHandle<LexicalScope::Data*> namedLambdaBindings() { MOZ_ASSERT(context->compartment()->runtimeFromAnyThread()->keepAtoms()); @@ -545,6 +551,11 @@ class FunctionBox : public ObjectBox, public SharedContext hasRest_ = true; } + bool isExprBody() const { return isExprBody_; } + void setIsExprBody() { + isExprBody_ = true; + } + void setGeneratorKind(GeneratorKind kind) { // A generator kind can be set at initialization, or when "yield" is // first seen. In both cases the transition can only happen from @@ -594,6 +605,14 @@ class FunctionBox : public ObjectBox, public SharedContext tokenStream.srcCoords.lineNumAndColumnIndex(bufStart, &startLine, &startColumn); } + void setEnd(uint32_t end) { + // For all functions except class constructors, the buffer and + // toString ending positions are the same. Class constructors override + // the toString ending position with the end of the class definition. + bufEnd = end; + toStringEnd = end; + } + void trace(JSTracer* trc) override; }; |