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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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56 | 56 |
57 function SymbolValueOf() { | 57 function SymbolValueOf() { |
58 if (!(IS_SYMBOL(this) || IS_SYMBOL_WRAPPER(this))) { | 58 if (!(IS_SYMBOL(this) || IS_SYMBOL_WRAPPER(this))) { |
59 throw MakeTypeError( | 59 throw MakeTypeError( |
60 'incompatible_method_receiver', ["Symbol.prototype.valueOf", this]); | 60 'incompatible_method_receiver', ["Symbol.prototype.valueOf", this]); |
61 } | 61 } |
62 return %_ValueOf(this); | 62 return %_ValueOf(this); |
63 } | 63 } |
64 | 64 |
65 | 65 |
66 function GetSymbolRegistry() { | |
67 var registry = %SymbolRegistry(); | |
68 if (!('internal' in registry)) { | |
69 registry.internal = {__proto__: null}; | |
70 registry.for = {__proto__: null}; | |
71 registry.keyFor = {__proto__: null}; | |
72 } | |
73 return registry; | |
74 } | |
75 | |
76 | |
77 function InternalSymbol(key) { | 66 function InternalSymbol(key) { |
78 var registry = GetSymbolRegistry(); | 67 var internal_registry = %SymbolRegistry().for_intern; |
79 if (!(key in registry.internal)) { | 68 if (IS_UNDEFINED(internal_registry[key])) { |
80 registry.internal[key] = %CreateSymbol(key); | 69 internal_registry[key] = %CreateSymbol(key); |
81 } | 70 } |
82 return registry.internal[key]; | 71 return internal_registry[key]; |
83 } | 72 } |
84 | 73 |
85 | 74 |
86 function SymbolFor(key) { | 75 function SymbolFor(key) { |
87 key = TO_STRING_INLINE(key); | 76 key = TO_STRING_INLINE(key); |
88 var registry = GetSymbolRegistry(); | 77 var registry = %SymbolRegistry(); |
89 if (!(key in registry.for)) { | 78 if (IS_UNDEFINED(registry.for[key])) { |
90 var symbol = %CreateSymbol(key); | 79 var symbol = %CreateSymbol(key); |
91 registry.for[key] = symbol; | 80 registry.for[key] = symbol; |
92 registry.keyFor[symbol] = key; | 81 registry.keyFor[symbol] = key; |
93 } | 82 } |
94 return registry.for[key]; | 83 return registry.for[key]; |
95 } | 84 } |
96 | 85 |
97 | 86 |
98 function SymbolKeyFor(symbol) { | 87 function SymbolKeyFor(symbol) { |
99 if (!IS_SYMBOL(symbol)) { | 88 if (!IS_SYMBOL(symbol)) throw MakeTypeError("not_a_symbol", [symbol]); |
100 throw MakeTypeError("not_a_symbol", [symbol]); | 89 return %SymbolRegistry().keyFor[symbol]; |
101 } | |
102 return GetSymbolRegistry().keyFor[symbol]; | |
103 } | 90 } |
104 | 91 |
105 | 92 |
106 // ES6 19.1.2.8 | 93 // ES6 19.1.2.8 |
107 function ObjectGetOwnPropertySymbols(obj) { | 94 function ObjectGetOwnPropertySymbols(obj) { |
108 if (!IS_SPEC_OBJECT(obj)) { | 95 if (!IS_SPEC_OBJECT(obj)) { |
109 throw MakeTypeError("called_on_non_object", | 96 throw MakeTypeError("called_on_non_object", |
110 ["Object.getOwnPropertySymbols"]); | 97 ["Object.getOwnPropertySymbols"]); |
111 } | 98 } |
112 | 99 |
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160 | 147 |
161 function ExtendObject() { | 148 function ExtendObject() { |
162 %CheckIsBootstrapping(); | 149 %CheckIsBootstrapping(); |
163 | 150 |
164 InstallFunctions($Object, DONT_ENUM, $Array( | 151 InstallFunctions($Object, DONT_ENUM, $Array( |
165 "getOwnPropertySymbols", ObjectGetOwnPropertySymbols | 152 "getOwnPropertySymbols", ObjectGetOwnPropertySymbols |
166 )); | 153 )); |
167 } | 154 } |
168 | 155 |
169 ExtendObject(); | 156 ExtendObject(); |
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