diff options
Diffstat (limited to 'src/builtins/builtins-symbol.cc')
-rw-r--r-- | src/builtins/builtins-symbol.cc | 78 |
1 files changed, 59 insertions, 19 deletions
diff --git a/src/builtins/builtins-symbol.cc b/src/builtins/builtins-symbol.cc index 8dd8a1fa..f57d0bff 100644 --- a/src/builtins/builtins-symbol.cc +++ b/src/builtins/builtins-symbol.cc @@ -2,8 +2,11 @@ // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. -#include "src/builtins/builtins.h" #include "src/builtins/builtins-utils.h" +#include "src/builtins/builtins.h" +#include "src/code-stub-assembler.h" +#include "src/counters.h" +#include "src/objects-inl.h" namespace v8 { namespace internal { @@ -32,44 +35,81 @@ BUILTIN(SymbolConstructor_ConstructStub) { isolate->factory()->Symbol_string())); } +// ES6 section 19.4.2.1 Symbol.for. +BUILTIN(SymbolFor) { + HandleScope scope(isolate); + Handle<Object> key_obj = args.atOrUndefined(isolate, 1); + Handle<String> key; + ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, key, + Object::ToString(isolate, key_obj)); + return *isolate->SymbolFor(Heap::kPublicSymbolTableRootIndex, key, false); +} + +// ES6 section 19.4.2.5 Symbol.keyFor. +BUILTIN(SymbolKeyFor) { + HandleScope scope(isolate); + Handle<Object> obj = args.atOrUndefined(isolate, 1); + if (!obj->IsSymbol()) { + THROW_NEW_ERROR_RETURN_FAILURE( + isolate, NewTypeError(MessageTemplate::kSymbolKeyFor, obj)); + } + Handle<Symbol> symbol = Handle<Symbol>::cast(obj); + DisallowHeapAllocation no_gc; + Object* result; + if (symbol->is_public()) { + result = symbol->name(); + DCHECK(result->IsString()); + } else { + result = isolate->heap()->undefined_value(); + } + DCHECK_EQ(isolate->heap()->public_symbol_table()->SlowReverseLookup(*symbol), + result); + return result; +} + // ES6 section 19.4.3.4 Symbol.prototype [ @@toPrimitive ] ( hint ) void Builtins::Generate_SymbolPrototypeToPrimitive( - CodeStubAssembler* assembler) { + compiler::CodeAssemblerState* state) { typedef compiler::Node Node; + CodeStubAssembler assembler(state); - Node* receiver = assembler->Parameter(0); - Node* context = assembler->Parameter(4); + Node* receiver = assembler.Parameter(0); + Node* context = assembler.Parameter(4); Node* result = - assembler->ToThisValue(context, receiver, PrimitiveType::kSymbol, - "Symbol.prototype [ @@toPrimitive ]"); - assembler->Return(result); + assembler.ToThisValue(context, receiver, PrimitiveType::kSymbol, + "Symbol.prototype [ @@toPrimitive ]"); + assembler.Return(result); } // ES6 section 19.4.3.2 Symbol.prototype.toString ( ) -void Builtins::Generate_SymbolPrototypeToString(CodeStubAssembler* assembler) { +void Builtins::Generate_SymbolPrototypeToString( + compiler::CodeAssemblerState* state) { typedef compiler::Node Node; + CodeStubAssembler assembler(state); - Node* receiver = assembler->Parameter(0); - Node* context = assembler->Parameter(3); + Node* receiver = assembler.Parameter(0); + Node* context = assembler.Parameter(3); - Node* value = assembler->ToThisValue( - context, receiver, PrimitiveType::kSymbol, "Symbol.prototype.toString"); + Node* value = assembler.ToThisValue(context, receiver, PrimitiveType::kSymbol, + "Symbol.prototype.toString"); Node* result = - assembler->CallRuntime(Runtime::kSymbolDescriptiveString, context, value); - assembler->Return(result); + assembler.CallRuntime(Runtime::kSymbolDescriptiveString, context, value); + assembler.Return(result); } // ES6 section 19.4.3.3 Symbol.prototype.valueOf ( ) -void Builtins::Generate_SymbolPrototypeValueOf(CodeStubAssembler* assembler) { +void Builtins::Generate_SymbolPrototypeValueOf( + compiler::CodeAssemblerState* state) { typedef compiler::Node Node; + CodeStubAssembler assembler(state); - Node* receiver = assembler->Parameter(0); - Node* context = assembler->Parameter(3); + Node* receiver = assembler.Parameter(0); + Node* context = assembler.Parameter(3); - Node* result = assembler->ToThisValue( + Node* result = assembler.ToThisValue( context, receiver, PrimitiveType::kSymbol, "Symbol.prototype.valueOf"); - assembler->Return(result); + assembler.Return(result); } } // namespace internal |