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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 "use strict"; | 5 "use strict"; |
6 | 6 |
7 // This file relies on the fact that the following declaration has been made | |
8 // in runtime.js and symbol.js: | |
9 // var $Object = global.Object; | |
10 | |
11 DefaultObjectToString = ObjectToStringHarmony; | |
12 // ES6 draft 08-24-14, section 19.1.3.6 | |
13 function ObjectToStringHarmony() { | |
14 if (IS_UNDEFINED(this) && !IS_UNDETECTABLE(this)) return "[object Undefined]"; | |
15 if (IS_NULL(this)) return "[object Null]"; | |
16 var O = ToObject(this); | |
17 var builtinTag = %_ClassOf(O); | |
18 var tag = O[symbolToStringTag]; | |
19 if (!IS_STRING(tag)) { | |
20 tag = builtinTag; | |
21 } | |
22 return "[object " + tag + "]"; | |
23 } | |
24 | |
25 function HarmonyToStringExtendSymbolPrototype() { | 7 function HarmonyToStringExtendSymbolPrototype() { |
26 %CheckIsBootstrapping(); | 8 %CheckIsBootstrapping(); |
27 | 9 |
28 InstallConstants(global.Symbol, $Array( | 10 InstallConstants(global.Symbol, $Array( |
29 // TODO(dslomov, caitp): Move to symbol.js when shipping | 11 // TODO(dslomov, caitp): Move to symbol.js when shipping |
30 "toStringTag", symbolToStringTag | 12 "toStringTag", symbolToStringTag |
31 )); | 13 )); |
32 } | 14 } |
33 | 15 |
34 HarmonyToStringExtendSymbolPrototype(); | 16 HarmonyToStringExtendSymbolPrototype(); |
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