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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 |
| 11 // - symbolUnscopables | 11 // - symbolUnscopables |
| 12 | 12 |
| 13 var $symbolToString; | 13 var $symbolToString; |
| 14 | 14 |
| 15 (function() { | 15 (function() { |
| 16 | 16 |
| 17 "use strict"; | 17 "use strict"; |
| 18 | 18 |
| 19 %CheckIsBootstrapping(); | 19 %CheckIsBootstrapping(); |
| 20 | 20 |
| 21 var GlobalArray = global.Array; | |
| 22 var GlobalObject = global.Object; | 21 var GlobalObject = global.Object; |
| 23 var GlobalSymbol = global.Symbol; | 22 var GlobalSymbol = global.Symbol; |
| 24 | 23 |
| 25 // ------------------------------------------------------------------- | 24 // ------------------------------------------------------------------- |
| 26 | 25 |
| 27 function SymbolConstructor(x) { | 26 function SymbolConstructor(x) { |
| 28 if (%_IsConstructCall()) { | 27 if (%_IsConstructCall()) { |
| 29 throw MakeTypeError('not_constructor', ["Symbol"]); | 28 throw MakeTypeError('not_constructor', ["Symbol"]); |
| 30 } | 29 } |
| 31 // NOTE: Passing in a Symbol value will throw on ToString(). | 30 // NOTE: Passing in a Symbol value will throw on ToString(). |
| (...skipping 45 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 77 // TODO(arv): Proxies use a shared trap for String and Symbol keys. | 76 // TODO(arv): Proxies use a shared trap for String and Symbol keys. |
| 78 | 77 |
| 79 return ObjectGetOwnPropertyKeys(obj, PROPERTY_ATTRIBUTES_STRING); | 78 return ObjectGetOwnPropertyKeys(obj, PROPERTY_ATTRIBUTES_STRING); |
| 80 } | 79 } |
| 81 | 80 |
| 82 //------------------------------------------------------------------- | 81 //------------------------------------------------------------------- |
| 83 | 82 |
| 84 %SetCode(GlobalSymbol, SymbolConstructor); | 83 %SetCode(GlobalSymbol, SymbolConstructor); |
| 85 %FunctionSetPrototype(GlobalSymbol, new GlobalObject()); | 84 %FunctionSetPrototype(GlobalSymbol, new GlobalObject()); |
| 86 | 85 |
| 87 InstallConstants(GlobalSymbol, GlobalArray( | 86 InstallConstants(GlobalSymbol, [ |
| 88 // TODO(rossberg): expose when implemented. | 87 // TODO(rossberg): expose when implemented. |
| 89 // "hasInstance", symbolHasInstance, | 88 // "hasInstance", symbolHasInstance, |
| 90 // "isConcatSpreadable", symbolIsConcatSpreadable, | 89 // "isConcatSpreadable", symbolIsConcatSpreadable, |
| 91 // "isRegExp", symbolIsRegExp, | 90 // "isRegExp", symbolIsRegExp, |
| 92 "iterator", symbolIterator, | 91 "iterator", symbolIterator, |
| 93 // TODO(dslomov, caitp): Currently defined in harmony-tostring.js --- | 92 // TODO(dslomov, caitp): Currently defined in harmony-tostring.js --- |
| 94 // Move here when shipping | 93 // Move here when shipping |
| 95 // "toStringTag", symbolToStringTag, | 94 // "toStringTag", symbolToStringTag, |
| 96 "unscopables", symbolUnscopables | 95 "unscopables", symbolUnscopables |
| 97 )); | 96 ]); |
| 98 | 97 |
| 99 InstallFunctions(GlobalSymbol, DONT_ENUM, GlobalArray( | 98 InstallFunctions(GlobalSymbol, DONT_ENUM, [ |
| 100 "for", SymbolFor, | 99 "for", SymbolFor, |
| 101 "keyFor", SymbolKeyFor | 100 "keyFor", SymbolKeyFor |
| 102 )); | 101 ]); |
| 103 | 102 |
| 104 %AddNamedProperty( | 103 %AddNamedProperty( |
| 105 GlobalSymbol.prototype, "constructor", GlobalSymbol, DONT_ENUM); | 104 GlobalSymbol.prototype, "constructor", GlobalSymbol, DONT_ENUM); |
| 106 %AddNamedProperty( | 105 %AddNamedProperty( |
| 107 GlobalSymbol.prototype, symbolToStringTag, "Symbol", DONT_ENUM | READ_ONLY); | 106 GlobalSymbol.prototype, symbolToStringTag, "Symbol", DONT_ENUM | READ_ONLY); |
| 108 | 107 |
| 109 InstallFunctions(GlobalSymbol.prototype, DONT_ENUM, GlobalArray( | 108 InstallFunctions(GlobalSymbol.prototype, DONT_ENUM, [ |
| 110 "toString", SymbolToString, | 109 "toString", SymbolToString, |
| 111 "valueOf", SymbolValueOf | 110 "valueOf", SymbolValueOf |
| 112 )); | 111 ]); |
| 113 | 112 |
| 114 InstallFunctions(GlobalObject, DONT_ENUM, GlobalArray( | 113 InstallFunctions(GlobalObject, DONT_ENUM, [ |
| 115 "getOwnPropertySymbols", ObjectGetOwnPropertySymbols | 114 "getOwnPropertySymbols", ObjectGetOwnPropertySymbols |
| 116 )); | 115 ]); |
| 117 | 116 |
| 118 $symbolToString = SymbolToString; | 117 $symbolToString = SymbolToString; |
| 119 | 118 |
| 120 })(); | 119 })(); |
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