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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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1715 } | 1715 } |
1716 | 1716 |
1717 | 1717 |
1718 bool DescriptorArray::IsProperty(int descriptor_number) { | 1718 bool DescriptorArray::IsProperty(int descriptor_number) { |
1719 return GetType(descriptor_number) < FIRST_PHANTOM_PROPERTY_TYPE; | 1719 return GetType(descriptor_number) < FIRST_PHANTOM_PROPERTY_TYPE; |
1720 } | 1720 } |
1721 | 1721 |
1722 | 1722 |
1723 bool DescriptorArray::IsTransition(int descriptor_number) { | 1723 bool DescriptorArray::IsTransition(int descriptor_number) { |
1724 PropertyType t = GetType(descriptor_number); | 1724 PropertyType t = GetType(descriptor_number); |
1725 return t == MAP_TRANSITION || t == CONSTANT_TRANSITION; | 1725 return t == MAP_TRANSITION || t == CONSTANT_TRANSITION || |
| 1726 t == EXTERNAL_ARRAY_TRANSITION; |
1726 } | 1727 } |
1727 | 1728 |
1728 | 1729 |
1729 bool DescriptorArray::IsNullDescriptor(int descriptor_number) { | 1730 bool DescriptorArray::IsNullDescriptor(int descriptor_number) { |
1730 return GetType(descriptor_number) == NULL_DESCRIPTOR; | 1731 return GetType(descriptor_number) == NULL_DESCRIPTOR; |
1731 } | 1732 } |
1732 | 1733 |
1733 | 1734 |
1734 bool DescriptorArray::IsDontEnum(int descriptor_number) { | 1735 bool DescriptorArray::IsDontEnum(int descriptor_number) { |
1735 return PropertyDetails(GetDetails(descriptor_number)).IsDontEnum(); | 1736 return PropertyDetails(GetDetails(descriptor_number)).IsDontEnum(); |
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2864 { MaybeObject* maybe_obj = CopyDropTransitions(); | 2865 { MaybeObject* maybe_obj = CopyDropTransitions(); |
2865 if (!maybe_obj->ToObject(&obj)) return maybe_obj; | 2866 if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
2866 } | 2867 } |
2867 Map* new_map = Map::cast(obj); | 2868 Map* new_map = Map::cast(obj); |
2868 new_map->set_has_fast_elements(false); | 2869 new_map->set_has_fast_elements(false); |
2869 isolate()->counters()->map_fast_to_slow_elements()->Increment(); | 2870 isolate()->counters()->map_fast_to_slow_elements()->Increment(); |
2870 return new_map; | 2871 return new_map; |
2871 } | 2872 } |
2872 | 2873 |
2873 | 2874 |
2874 MaybeObject* Map::NewExternalArrayElementsMap() { | |
2875 // TODO(danno): Special case empty object map (or most common case) | |
2876 // to return a pre-canned pixel array map. | |
2877 Object* obj; | |
2878 { MaybeObject* maybe_obj = CopyDropTransitions(); | |
2879 if (!maybe_obj->ToObject(&obj)) return maybe_obj; | |
2880 } | |
2881 Map* new_map = Map::cast(obj); | |
2882 new_map->set_has_fast_elements(false); | |
2883 new_map->set_has_external_array_elements(true); | |
2884 isolate()->counters()->map_to_external_array_elements()->Increment(); | |
2885 return new_map; | |
2886 } | |
2887 | |
2888 | |
2889 ACCESSORS(Map, instance_descriptors, DescriptorArray, | 2875 ACCESSORS(Map, instance_descriptors, DescriptorArray, |
2890 kInstanceDescriptorsOffset) | 2876 kInstanceDescriptorsOffset) |
2891 ACCESSORS(Map, code_cache, Object, kCodeCacheOffset) | 2877 ACCESSORS(Map, code_cache, Object, kCodeCacheOffset) |
2892 ACCESSORS(Map, constructor, Object, kConstructorOffset) | 2878 ACCESSORS(Map, constructor, Object, kConstructorOffset) |
2893 | 2879 |
2894 ACCESSORS(JSFunction, shared, SharedFunctionInfo, kSharedFunctionInfoOffset) | 2880 ACCESSORS(JSFunction, shared, SharedFunctionInfo, kSharedFunctionInfoOffset) |
2895 ACCESSORS(JSFunction, literals, FixedArray, kLiteralsOffset) | 2881 ACCESSORS(JSFunction, literals, FixedArray, kLiteralsOffset) |
2896 ACCESSORS_GCSAFE(JSFunction, next_function_link, Object, | 2882 ACCESSORS_GCSAFE(JSFunction, next_function_link, Object, |
2897 kNextFunctionLinkOffset) | 2883 kNextFunctionLinkOffset) |
2898 | 2884 |
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4113 #undef WRITE_INT_FIELD | 4099 #undef WRITE_INT_FIELD |
4114 #undef READ_SHORT_FIELD | 4100 #undef READ_SHORT_FIELD |
4115 #undef WRITE_SHORT_FIELD | 4101 #undef WRITE_SHORT_FIELD |
4116 #undef READ_BYTE_FIELD | 4102 #undef READ_BYTE_FIELD |
4117 #undef WRITE_BYTE_FIELD | 4103 #undef WRITE_BYTE_FIELD |
4118 | 4104 |
4119 | 4105 |
4120 } } // namespace v8::internal | 4106 } } // namespace v8::internal |
4121 | 4107 |
4122 #endif // V8_OBJECTS_INL_H_ | 4108 #endif // V8_OBJECTS_INL_H_ |
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