// 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