OLD | NEW |
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 "use strict"; | 5 "use strict"; |
6 | 6 |
7 // This file relies on the fact that the following declaration has been made | 7 // This file relies on the fact that the following declaration has been made |
8 // in runtime.js and symbol.js: | 8 // in runtime.js and symbol.js: |
9 // var $Object = global.Object; | 9 // var $Object = global.Object; |
10 // var $Symbol = global.Symbol; | 10 // var $Symbol = global.Symbol; |
(...skipping 15 matching lines...) Expand all Loading... |
26 // ES6 draft 08-24-14, section 19.1.3.6 | 26 // ES6 draft 08-24-14, section 19.1.3.6 |
27 function ObjectToStringHarmony() { | 27 function ObjectToStringHarmony() { |
28 if (IS_UNDEFINED(this) && !IS_UNDETECTABLE(this)) return "[object Undefined]"; | 28 if (IS_UNDEFINED(this) && !IS_UNDETECTABLE(this)) return "[object Undefined]"; |
29 if (IS_NULL(this)) return "[object Null]"; | 29 if (IS_NULL(this)) return "[object Null]"; |
30 var O = ToObject(this); | 30 var O = ToObject(this); |
31 var builtinTag = %_ClassOf(O); | 31 var builtinTag = %_ClassOf(O); |
32 var tag = O[symbolToStringTag]; | 32 var tag = O[symbolToStringTag]; |
33 if (IS_UNDEFINED(tag)) { | 33 if (IS_UNDEFINED(tag)) { |
34 tag = builtinTag; | 34 tag = builtinTag; |
35 } else if (!IS_STRING(tag)) { | 35 } else if (!IS_STRING(tag)) { |
36 return "[object ???]" | 36 return "[object ???]"; |
37 } else if (tag !== builtinTag && kBuiltinStringTags[tag]) { | 37 } else if (tag !== builtinTag && kBuiltinStringTags[tag]) { |
38 return "[object ~" + tag + "]"; | 38 return "[object ~" + tag + "]"; |
39 } | 39 } |
40 return "[object " + tag + "]"; | 40 return "[object " + tag + "]"; |
41 } | 41 } |
42 | 42 |
43 function HarmonyToStringExtendSymbolPrototype() { | 43 function HarmonyToStringExtendSymbolPrototype() { |
44 %CheckIsBootstrapping(); | 44 %CheckIsBootstrapping(); |
45 | 45 |
46 InstallConstants($Symbol, $Array( | 46 InstallConstants($Symbol, $Array( |
(...skipping 16 matching lines...) Expand all Loading... |
63 // Set up the non-enumerable functions on the Array prototype object. | 63 // Set up the non-enumerable functions on the Array prototype object. |
64 var desc = ToPropertyDescriptor({ | 64 var desc = ToPropertyDescriptor({ |
65 value: ObjectToStringHarmony | 65 value: ObjectToStringHarmony |
66 }); | 66 }); |
67 DefineOwnProperty($Object.prototype, "toString", desc, false); | 67 DefineOwnProperty($Object.prototype, "toString", desc, false); |
68 | 68 |
69 %ToFastProperties($Object.prototype); | 69 %ToFastProperties($Object.prototype); |
70 } | 70 } |
71 | 71 |
72 HarmonyToStringExtendObjectPrototype(); | 72 HarmonyToStringExtendObjectPrototype(); |
OLD | NEW |