1 // Copyright 2016 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "src/builtins/builtins.h"
6 #include "src/builtins/builtins-utils.h"
7
8 namespace v8 {
9 namespace internal {
10
11 // -----------------------------------------------------------------------------
12 // ES6 section 19.4 Symbol Objects
13
14 // ES6 section 19.4.1.1 Symbol ( [ description ] ) for the [[Call]] case.
BUILTIN(SymbolConstructor)15 BUILTIN(SymbolConstructor) {
16 HandleScope scope(isolate);
17 Handle<Symbol> result = isolate->factory()->NewSymbol();
18 Handle<Object> description = args.atOrUndefined(isolate, 1);
19 if (!description->IsUndefined(isolate)) {
20 ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, description,
21 Object::ToString(isolate, description));
22 result->set_name(*description);
23 }
24 return *result;
25 }
26
27 // ES6 section 19.4.1.1 Symbol ( [ description ] ) for the [[Construct]] case.
BUILTIN(SymbolConstructor_ConstructStub)28 BUILTIN(SymbolConstructor_ConstructStub) {
29 HandleScope scope(isolate);
30 THROW_NEW_ERROR_RETURN_FAILURE(
31 isolate, NewTypeError(MessageTemplate::kNotConstructor,
32 isolate->factory()->Symbol_string()));
33 }
34
35 // ES6 section 19.4.3.4 Symbol.prototype [ @@toPrimitive ] ( hint )
Generate_SymbolPrototypeToPrimitive(CodeStubAssembler * assembler)36 void Builtins::Generate_SymbolPrototypeToPrimitive(
37 CodeStubAssembler* assembler) {
38 typedef compiler::Node Node;
39
40 Node* receiver = assembler->Parameter(0);
41 Node* context = assembler->Parameter(4);
42
43 Node* result =
44 assembler->ToThisValue(context, receiver, PrimitiveType::kSymbol,
45 "Symbol.prototype [ @@toPrimitive ]");
46 assembler->Return(result);
47 }
48
49 // ES6 section 19.4.3.2 Symbol.prototype.toString ( )
Generate_SymbolPrototypeToString(CodeStubAssembler * assembler)50 void Builtins::Generate_SymbolPrototypeToString(CodeStubAssembler* assembler) {
51 typedef compiler::Node Node;
52
53 Node* receiver = assembler->Parameter(0);
54 Node* context = assembler->Parameter(3);
55
56 Node* value = assembler->ToThisValue(
57 context, receiver, PrimitiveType::kSymbol, "Symbol.prototype.toString");
58 Node* result =
59 assembler->CallRuntime(Runtime::kSymbolDescriptiveString, context, value);
60 assembler->Return(result);
61 }
62
63 // ES6 section 19.4.3.3 Symbol.prototype.valueOf ( )
Generate_SymbolPrototypeValueOf(CodeStubAssembler * assembler)64 void Builtins::Generate_SymbolPrototypeValueOf(CodeStubAssembler* assembler) {
65 typedef compiler::Node Node;
66
67 Node* receiver = assembler->Parameter(0);
68 Node* context = assembler->Parameter(3);
69
70 Node* result = assembler->ToThisValue(
71 context, receiver, PrimitiveType::kSymbol, "Symbol.prototype.valueOf");
72 assembler->Return(result);
73 }
74
75 } // namespace internal
76 } // namespace v8
77