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| 1 // Copyright 2016 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 (function(global, utils) { |
| 6 "use strict"; |
| 7 |
| 8 %CheckIsBootstrapping(); |
| 9 |
| 10 var GlobalString = global.String; |
| 11 var OverrideFunction = utils.OverrideFunction; |
| 12 var MakeTypeError; |
| 13 |
| 14 utils.Import(function(from) { |
| 15 MakeTypeError = from.MakeTypeError; |
| 16 }); |
| 17 |
| 18 OverrideFunction(GlobalString.prototype, 'toLowerCase', function() { |
| 19 if (!IS_UNDEFINED(new.target)) { |
| 20 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); |
| 21 } |
| 22 CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLowerCase"); |
| 23 var s = TO_STRING(this); |
| 24 return %StringToLowerCaseI18N(s); |
| 25 } |
| 26 ); |
| 27 |
| 28 OverrideFunction(GlobalString.prototype, 'toUpperCase', function() { |
| 29 if (!IS_UNDEFINED(new.target)) { |
| 30 throw MakeTypeError(kOrdinaryFunctionCalledAsConstructor); |
| 31 } |
| 32 CHECK_OBJECT_COERCIBLE(this, "String.prototype.toLowerCase"); |
| 33 var s = TO_STRING(this); |
| 34 return %StringToUpperCaseI18N(s); |
| 35 } |
| 36 ); |
| 37 |
| 38 }) |
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