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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Expects following symbols to be set in the bootstrapper during genesis: | 5 // Expects following symbols to be set in the bootstrapper during genesis: |
6 // - symbolHasInstance | 6 // - symbolHasInstance |
7 // - symbolIsConcatSpreadable | 7 // - symbolIsConcatSpreadable |
8 // - symbolIsRegExp | 8 // - symbolIsRegExp |
9 // - symbolIterator | 9 // - symbolIterator |
10 // - symbolToStringTag | 10 // - symbolToStringTag |
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27 if (%_IsConstructCall()) { | 27 if (%_IsConstructCall()) { |
28 throw MakeTypeError('not_constructor', ["Symbol"]); | 28 throw MakeTypeError('not_constructor', ["Symbol"]); |
29 } | 29 } |
30 // NOTE: Passing in a Symbol value will throw on ToString(). | 30 // NOTE: Passing in a Symbol value will throw on ToString(). |
31 return %CreateSymbol(IS_UNDEFINED(x) ? x : ToString(x)); | 31 return %CreateSymbol(IS_UNDEFINED(x) ? x : ToString(x)); |
32 } | 32 } |
33 | 33 |
34 | 34 |
35 function SymbolToString() { | 35 function SymbolToString() { |
36 if (!(IS_SYMBOL(this) || IS_SYMBOL_WRAPPER(this))) { | 36 if (!(IS_SYMBOL(this) || IS_SYMBOL_WRAPPER(this))) { |
37 throw MakeTypeError( | 37 throw MakeTypeError(kIncompatibleMethodReceiver, |
38 'incompatible_method_receiver', ["Symbol.prototype.toString", this]); | 38 "Symbol.prototype.toString", this); |
39 } | 39 } |
40 var description = %SymbolDescription(%_ValueOf(this)); | 40 var description = %SymbolDescription(%_ValueOf(this)); |
41 return "Symbol(" + (IS_UNDEFINED(description) ? "" : description) + ")"; | 41 return "Symbol(" + (IS_UNDEFINED(description) ? "" : description) + ")"; |
42 } | 42 } |
43 | 43 |
44 | 44 |
45 function SymbolValueOf() { | 45 function SymbolValueOf() { |
46 if (!(IS_SYMBOL(this) || IS_SYMBOL_WRAPPER(this))) { | 46 if (!(IS_SYMBOL(this) || IS_SYMBOL_WRAPPER(this))) { |
47 throw MakeTypeError( | 47 throw MakeTypeError(kIncompatibleMethodReceiver, |
48 'incompatible_method_receiver', ["Symbol.prototype.valueOf", this]); | 48 "Symbol.prototype.valueOf", this); |
49 } | 49 } |
50 return %_ValueOf(this); | 50 return %_ValueOf(this); |
51 } | 51 } |
52 | 52 |
53 | 53 |
54 function SymbolFor(key) { | 54 function SymbolFor(key) { |
55 key = TO_STRING_INLINE(key); | 55 key = TO_STRING_INLINE(key); |
56 var registry = %SymbolRegistry(); | 56 var registry = %SymbolRegistry(); |
57 if (IS_UNDEFINED(registry.for[key])) { | 57 if (IS_UNDEFINED(registry.for[key])) { |
58 var symbol = %CreateSymbol(key); | 58 var symbol = %CreateSymbol(key); |
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110 "valueOf", SymbolValueOf | 110 "valueOf", SymbolValueOf |
111 ]); | 111 ]); |
112 | 112 |
113 InstallFunctions(GlobalObject, DONT_ENUM, [ | 113 InstallFunctions(GlobalObject, DONT_ENUM, [ |
114 "getOwnPropertySymbols", ObjectGetOwnPropertySymbols | 114 "getOwnPropertySymbols", ObjectGetOwnPropertySymbols |
115 ]); | 115 ]); |
116 | 116 |
117 $symbolToString = SymbolToString; | 117 $symbolToString = SymbolToString; |
118 | 118 |
119 })(); | 119 })(); |
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