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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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622 // A false value here means that access checks failed. | 622 // A false value here means that access checks failed. |
623 if (current_or_access === false) return void 0; | 623 if (current_or_access === false) return void 0; |
624 | 624 |
625 var current = ConvertDescriptorArrayToDescriptor(current_or_access); | 625 var current = ConvertDescriptorArrayToDescriptor(current_or_access); |
626 var extensible = %IsExtensible(ToObject(obj)); | 626 var extensible = %IsExtensible(ToObject(obj)); |
627 | 627 |
628 // Error handling according to spec. | 628 // Error handling according to spec. |
629 // Step 3 | 629 // Step 3 |
630 if (IS_UNDEFINED(current) && !extensible) { | 630 if (IS_UNDEFINED(current) && !extensible) { |
631 if (should_throw) { | 631 if (should_throw) { |
632 throw MakeTypeError("define_disallowed", ["defineProperty"]); | 632 throw MakeTypeError("define_disallowed", [p]); |
633 } else { | 633 } else { |
634 return; | 634 return; |
635 } | 635 } |
636 } | 636 } |
637 | 637 |
638 if (!IS_UNDEFINED(current)) { | 638 if (!IS_UNDEFINED(current)) { |
639 // Step 5 and 6 | 639 // Step 5 and 6 |
640 if ((IsGenericDescriptor(desc) || | 640 if ((IsGenericDescriptor(desc) || |
641 IsDataDescriptor(desc) == IsDataDescriptor(current)) && | 641 IsDataDescriptor(desc) == IsDataDescriptor(current)) && |
642 (!desc.hasEnumerable() || | 642 (!desc.hasEnumerable() || |
643 SameValue(desc.isEnumerable(), current.isEnumerable())) && | 643 SameValue(desc.isEnumerable(), current.isEnumerable())) && |
644 (!desc.hasConfigurable() || | 644 (!desc.hasConfigurable() || |
645 SameValue(desc.isConfigurable(), current.isConfigurable())) && | 645 SameValue(desc.isConfigurable(), current.isConfigurable())) && |
646 (!desc.hasWritable() || | 646 (!desc.hasWritable() || |
647 SameValue(desc.isWritable(), current.isWritable())) && | 647 SameValue(desc.isWritable(), current.isWritable())) && |
648 (!desc.hasValue() || | 648 (!desc.hasValue() || |
649 SameValue(desc.getValue(), current.getValue())) && | 649 SameValue(desc.getValue(), current.getValue())) && |
650 (!desc.hasGetter() || | 650 (!desc.hasGetter() || |
651 SameValue(desc.getGet(), current.getGet())) && | 651 SameValue(desc.getGet(), current.getGet())) && |
652 (!desc.hasSetter() || | 652 (!desc.hasSetter() || |
653 SameValue(desc.getSet(), current.getSet()))) { | 653 SameValue(desc.getSet(), current.getSet()))) { |
654 return true; | 654 return true; |
655 } | 655 } |
656 if (!current.isConfigurable()) { | 656 if (!current.isConfigurable()) { |
657 // Step 7 | 657 // Step 7 |
658 if (desc.isConfigurable() || | 658 if (desc.isConfigurable() || |
659 (desc.hasEnumerable() && | 659 (desc.hasEnumerable() && |
660 desc.isEnumerable() != current.isEnumerable())) { | 660 desc.isEnumerable() != current.isEnumerable())) { |
661 if (should_throw) { | 661 if (should_throw) { |
662 throw MakeTypeError("redefine_disallowed", ["defineProperty"]); | 662 throw MakeTypeError("redefine_disallowed", [p]); |
663 } else { | 663 } else { |
664 return; | 664 return; |
665 } | 665 } |
666 } | 666 } |
667 // Step 8 | 667 // Step 8 |
668 if (!IsGenericDescriptor(desc)) { | 668 if (!IsGenericDescriptor(desc)) { |
669 // Step 9a | 669 // Step 9a |
670 if (IsDataDescriptor(current) != IsDataDescriptor(desc)) { | 670 if (IsDataDescriptor(current) != IsDataDescriptor(desc)) { |
671 if (should_throw) { | 671 if (should_throw) { |
672 throw MakeTypeError("redefine_disallowed", ["defineProperty"]); | 672 throw MakeTypeError("redefine_disallowed", [p]); |
673 } else { | 673 } else { |
674 return; | 674 return; |
675 } | 675 } |
676 } | 676 } |
677 // Step 10a | 677 // Step 10a |
678 if (IsDataDescriptor(current) && IsDataDescriptor(desc)) { | 678 if (IsDataDescriptor(current) && IsDataDescriptor(desc)) { |
679 if (!current.isWritable() && desc.isWritable()) { | 679 if (!current.isWritable() && desc.isWritable()) { |
680 if (should_throw) { | 680 if (should_throw) { |
681 throw MakeTypeError("redefine_disallowed", ["defineProperty"]); | 681 throw MakeTypeError("redefine_disallowed", [p]); |
682 } else { | 682 } else { |
683 return; | 683 return; |
684 } | 684 } |
685 } | 685 } |
686 if (!current.isWritable() && desc.hasValue() && | 686 if (!current.isWritable() && desc.hasValue() && |
687 !SameValue(desc.getValue(), current.getValue())) { | 687 !SameValue(desc.getValue(), current.getValue())) { |
688 if (should_throw) { | 688 if (should_throw) { |
689 throw MakeTypeError("redefine_disallowed", ["defineProperty"]); | 689 throw MakeTypeError("redefine_disallowed", [p]); |
690 } else { | 690 } else { |
691 return; | 691 return; |
692 } | 692 } |
693 } | 693 } |
694 } | 694 } |
695 // Step 11 | 695 // Step 11 |
696 if (IsAccessorDescriptor(desc) && IsAccessorDescriptor(current)) { | 696 if (IsAccessorDescriptor(desc) && IsAccessorDescriptor(current)) { |
697 if (desc.hasSetter() && !SameValue(desc.getSet(), current.getSet())) { | 697 if (desc.hasSetter() && !SameValue(desc.getSet(), current.getSet())) { |
698 if (should_throw) { | 698 if (should_throw) { |
699 throw MakeTypeError("redefine_disallowed", ["defineProperty"]); | 699 throw MakeTypeError("redefine_disallowed", [p]); |
700 } else { | 700 } else { |
701 return; | 701 return; |
702 } | 702 } |
703 } | 703 } |
704 if (desc.hasGetter() && !SameValue(desc.getGet(),current.getGet())) { | 704 if (desc.hasGetter() && !SameValue(desc.getGet(),current.getGet())) { |
705 if (should_throw) { | 705 if (should_throw) { |
706 throw MakeTypeError("redefine_disallowed", ["defineProperty"]); | 706 throw MakeTypeError("redefine_disallowed", [p]); |
707 } else { | 707 } else { |
708 return; | 708 return; |
709 } | 709 } |
710 } | 710 } |
711 } | 711 } |
712 } | 712 } |
713 } | 713 } |
714 } | 714 } |
715 | 715 |
716 // Send flags - enumerable and configurable are common - writable is | 716 // Send flags - enumerable and configurable are common - writable is |
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1009 if (!ObjectIsExtensible(obj)) { | 1009 if (!ObjectIsExtensible(obj)) { |
1010 return true; | 1010 return true; |
1011 } | 1011 } |
1012 return false; | 1012 return false; |
1013 } | 1013 } |
1014 | 1014 |
1015 | 1015 |
1016 // ES5 section 15.2.3.13 | 1016 // ES5 section 15.2.3.13 |
1017 function ObjectIsExtensible(obj) { | 1017 function ObjectIsExtensible(obj) { |
1018 if (!IS_SPEC_OBJECT(obj)) { | 1018 if (!IS_SPEC_OBJECT(obj)) { |
1019 throw MakeTypeError("obj_ctor_property_non_object", ["preventExtension"]); | 1019 throw MakeTypeError("obj_ctor_property_non_object", ["isExtensible"]); |
1020 } | 1020 } |
1021 return %IsExtensible(obj); | 1021 return %IsExtensible(obj); |
1022 } | 1022 } |
1023 | 1023 |
1024 | 1024 |
1025 %SetCode($Object, function(x) { | 1025 %SetCode($Object, function(x) { |
1026 if (%_IsConstructCall()) { | 1026 if (%_IsConstructCall()) { |
1027 if (x == null) return this; | 1027 if (x == null) return this; |
1028 return ToObject(x); | 1028 return ToObject(x); |
1029 } else { | 1029 } else { |
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1391 // ---------------------------------------------------------------------------- | 1391 // ---------------------------------------------------------------------------- |
1392 | 1392 |
1393 function SetupFunction() { | 1393 function SetupFunction() { |
1394 InstallFunctions($Function.prototype, DONT_ENUM, $Array( | 1394 InstallFunctions($Function.prototype, DONT_ENUM, $Array( |
1395 "bind", FunctionBind, | 1395 "bind", FunctionBind, |
1396 "toString", FunctionToString | 1396 "toString", FunctionToString |
1397 )); | 1397 )); |
1398 } | 1398 } |
1399 | 1399 |
1400 SetupFunction(); | 1400 SetupFunction(); |
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