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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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128 value: val, | 128 value: val, |
129 writable: true, | 129 writable: true, |
130 enumerable: true, | 130 enumerable: true, |
131 configurable: true}); | 131 configurable: true}); |
132 return true; | 132 return true; |
133 } | 133 } |
134 | 134 |
135 function DerivedHasTrap(name) { | 135 function DerivedHasTrap(name) { |
136 return !!this.getPropertyDescriptor(name) | 136 return !!this.getPropertyDescriptor(name) |
137 } | 137 } |
| 138 |
| 139 function DerivedKeysTrap() { |
| 140 var names = this.getOwnPropertyNames() |
| 141 var enumerableNames = [] |
| 142 for (var i = 0, count = 0; i < names.length; ++i) { |
| 143 var name = names[i] |
| 144 if (this.getOwnPropertyDescriptor(TO_STRING_INLINE(name)).enumerable) { |
| 145 enumerableNames[count++] = names[i] |
| 146 } |
| 147 } |
| 148 return enumerableNames |
| 149 } |
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