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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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488 | 488 |
489 PropertyDescriptor.prototype.hasSetter = function() { | 489 PropertyDescriptor.prototype.hasSetter = function() { |
490 return this.hasSetter_; | 490 return this.hasSetter_; |
491 } | 491 } |
492 | 492 |
493 | 493 |
494 // Converts an array returned from Runtime_GetOwnProperty to an actual | 494 // Converts an array returned from Runtime_GetOwnProperty to an actual |
495 // property descriptor. For a description of the array layout please | 495 // property descriptor. For a description of the array layout please |
496 // see the runtime.cc file. | 496 // see the runtime.cc file. |
497 function ConvertDescriptorArrayToDescriptor(desc_array) { | 497 function ConvertDescriptorArrayToDescriptor(desc_array) { |
498 if (desc_array == false) { | 498 if (desc_array === false) { |
499 throw 'Internal error: invalid desc_array'; | 499 throw 'Internal error: invalid desc_array'; |
500 } | 500 } |
501 | 501 |
502 if (IS_UNDEFINED(desc_array)) { | 502 if (IS_UNDEFINED(desc_array)) { |
503 return void 0; | 503 return void 0; |
504 } | 504 } |
505 | 505 |
506 var desc = new PropertyDescriptor(); | 506 var desc = new PropertyDescriptor(); |
507 // This is an accessor. | 507 // This is an accessor. |
508 if (desc_array[IS_ACCESSOR_INDEX]) { | 508 if (desc_array[IS_ACCESSOR_INDEX]) { |
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537 | 537 |
538 | 538 |
539 // ES5 section 8.12.1. | 539 // ES5 section 8.12.1. |
540 function GetOwnProperty(obj, p) { | 540 function GetOwnProperty(obj, p) { |
541 // GetOwnProperty returns an array indexed by the constants | 541 // GetOwnProperty returns an array indexed by the constants |
542 // defined in macros.py. | 542 // defined in macros.py. |
543 // If p is not a property on obj undefined is returned. | 543 // If p is not a property on obj undefined is returned. |
544 var props = %GetOwnProperty(ToObject(obj), ToString(p)); | 544 var props = %GetOwnProperty(ToObject(obj), ToString(p)); |
545 | 545 |
546 // A false value here means that access checks failed. | 546 // A false value here means that access checks failed. |
547 if (props == false) return void 0; | 547 if (props === false) return void 0; |
548 | 548 |
549 return ConvertDescriptorArrayToDescriptor(props); | 549 return ConvertDescriptorArrayToDescriptor(props); |
550 } | 550 } |
551 | 551 |
552 | 552 |
553 // ES5 8.12.9. | 553 // ES5 8.12.9. |
554 function DefineOwnProperty(obj, p, desc, should_throw) { | 554 function DefineOwnProperty(obj, p, desc, should_throw) { |
555 var current_or_access = %GetOwnProperty(ToObject(obj), ToString(p)); | 555 var current_or_access = %GetOwnProperty(ToObject(obj), ToString(p)); |
556 // A false value here means that access checks failed. | 556 // A false value here means that access checks failed. |
557 if (current_or_access == false) return void 0; | 557 if (current_or_access === false) return void 0; |
558 | 558 |
559 var current = ConvertDescriptorArrayToDescriptor(current_or_access); | 559 var current = ConvertDescriptorArrayToDescriptor(current_or_access); |
560 var extensible = %IsExtensible(ToObject(obj)); | 560 var extensible = %IsExtensible(ToObject(obj)); |
561 | 561 |
562 // Error handling according to spec. | 562 // Error handling according to spec. |
563 // Step 3 | 563 // Step 3 |
564 if (IS_UNDEFINED(current) && !extensible) | 564 if (IS_UNDEFINED(current) && !extensible) |
565 throw MakeTypeError("define_disallowed", ["defineProperty"]); | 565 throw MakeTypeError("define_disallowed", ["defineProperty"]); |
566 | 566 |
567 if (!IS_UNDEFINED(current)) { | 567 if (!IS_UNDEFINED(current)) { |
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1243 // ---------------------------------------------------------------------------- | 1243 // ---------------------------------------------------------------------------- |
1244 | 1244 |
1245 function SetupFunction() { | 1245 function SetupFunction() { |
1246 InstallFunctions($Function.prototype, DONT_ENUM, $Array( | 1246 InstallFunctions($Function.prototype, DONT_ENUM, $Array( |
1247 "bind", FunctionBind, | 1247 "bind", FunctionBind, |
1248 "toString", FunctionToString | 1248 "toString", FunctionToString |
1249 )); | 1249 )); |
1250 } | 1250 } |
1251 | 1251 |
1252 SetupFunction(); | 1252 SetupFunction(); |
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