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| 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 'use strict'; |
| 6 |
| 7 var $RegExp = global.RegExp; |
| 8 |
| 9 // ------------------------------------------------------------------- |
| 10 |
| 11 // ES6 draft 12-06-13, section 21.2.5.3 |
| 12 // + https://bugs.ecmascript.org/show_bug.cgi?id=3423 |
| 13 function RegExpGetFlags() { |
| 14 if (!IS_SPEC_OBJECT(this)) { |
| 15 throw MakeTypeError('flags_getter_non_object', |
| 16 [%ToString(this)]); |
| 17 } |
| 18 var result = ''; |
| 19 if (this.global) result += 'g'; |
| 20 if (this.ignoreCase) result += 'i'; |
| 21 if (this.multiline) result += 'm'; |
| 22 if (this.unicode) result += 'u'; |
| 23 if (this.sticky) result += 'y'; |
| 24 return result; |
| 25 } |
| 26 |
| 27 function ExtendRegExpPrototype() { |
| 28 %CheckIsBootstrapping(); |
| 29 |
| 30 %DefineAccessorPropertyUnchecked($RegExp.prototype, 'flags', RegExpGetFlags, |
| 31 null, DONT_ENUM | DONT_DELETE); |
| 32 %SetNativeFlag(RegExpGetFlags); |
| 33 } |
| 34 |
| 35 ExtendRegExpPrototype(); |
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