| // Copyright 2016 the V8 project authors. All rights reserved. |
| // 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" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // ----------------------------------------------------------------------------- |
| // ES6 section 19.4 Symbol Objects |
| |
| // ES6 section 19.4.1.1 Symbol ( [ description ] ) for the [[Call]] case. |
| BUILTIN(SymbolConstructor) { |
| HandleScope scope(isolate); |
| Handle<Symbol> result = isolate->factory()->NewSymbol(); |
| Handle<Object> description = args.atOrUndefined(isolate, 1); |
| if (!description->IsUndefined(isolate)) { |
| ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, description, |
| Object::ToString(isolate, description)); |
| result->set_name(*description); |
| } |
| return *result; |
| } |
| |
| // ES6 section 19.4.1.1 Symbol ( [ description ] ) for the [[Construct]] case. |
| BUILTIN(SymbolConstructor_ConstructStub) { |
| HandleScope scope(isolate); |
| THROW_NEW_ERROR_RETURN_FAILURE( |
| isolate, NewTypeError(MessageTemplate::kNotConstructor, |
| isolate->factory()->Symbol_string())); |
| } |
| |
| // ES6 section 19.4.3.4 Symbol.prototype [ @@toPrimitive ] ( hint ) |
| void Builtins::Generate_SymbolPrototypeToPrimitive( |
| CodeStubAssembler* assembler) { |
| typedef compiler::Node Node; |
| |
| Node* receiver = assembler->Parameter(0); |
| Node* context = assembler->Parameter(4); |
| |
| Node* 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) { |
| typedef compiler::Node Node; |
| |
| Node* receiver = assembler->Parameter(0); |
| Node* context = assembler->Parameter(3); |
| |
| Node* value = assembler->ToThisValue( |
| context, receiver, PrimitiveType::kSymbol, "Symbol.prototype.toString"); |
| Node* 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) { |
| typedef compiler::Node Node; |
| |
| Node* receiver = assembler->Parameter(0); |
| Node* context = assembler->Parameter(3); |
| |
| Node* result = assembler->ToThisValue( |
| context, receiver, PrimitiveType::kSymbol, "Symbol.prototype.valueOf"); |
| assembler->Return(result); |
| } |
| |
| } // namespace internal |
| } // namespace v8 |