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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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5923 // Leaving JavaScript. | 5923 // Leaving JavaScript. |
5924 VMState state(EXTERNAL); | 5924 VMState state(EXTERNAL); |
5925 result = getter(index, info); | 5925 result = getter(index, info); |
5926 } | 5926 } |
5927 if (!result.IsEmpty()) return true; | 5927 if (!result.IsEmpty()) return true; |
5928 } | 5928 } |
5929 return holder_handle->HasElementPostInterceptor(*receiver_handle, index); | 5929 return holder_handle->HasElementPostInterceptor(*receiver_handle, index); |
5930 } | 5930 } |
5931 | 5931 |
5932 | 5932 |
5933 bool JSObject::HasLocalElement(uint32_t index) { | 5933 JSObject::LocalElementType JSObject::HasLocalElement(uint32_t index) { |
5934 // Check access rights if needed. | 5934 // Check access rights if needed. |
5935 if (IsAccessCheckNeeded() && | 5935 if (IsAccessCheckNeeded() && |
5936 !Top::MayIndexedAccess(this, index, v8::ACCESS_HAS)) { | 5936 !Top::MayIndexedAccess(this, index, v8::ACCESS_HAS)) { |
5937 Top::ReportFailedAccessCheck(this, v8::ACCESS_HAS); | 5937 Top::ReportFailedAccessCheck(this, v8::ACCESS_HAS); |
5938 return false; | 5938 return UNDEFINED_ELEMENT; |
5939 } | 5939 } |
5940 | 5940 |
5941 // Check for lookup interceptor | 5941 // Check for lookup interceptor |
5942 if (HasIndexedInterceptor()) { | 5942 if (HasIndexedInterceptor()) { |
5943 return HasElementWithInterceptor(this, index); | 5943 return HasElementWithInterceptor(this, index) ? INTERCEPTED_ELEMENT |
5944 : UNDEFINED_ELEMENT; | |
5944 } | 5945 } |
5945 | 5946 |
5946 // Handle [] on String objects. | 5947 // Handle [] on String objects. |
5947 if (this->IsStringObjectWithCharacterAt(index)) return true; | 5948 if (this->IsStringObjectWithCharacterAt(index)) { |
5949 return STRING_CHARACTER_ELEMENT; | |
5950 } | |
5948 | 5951 |
5949 switch (GetElementsKind()) { | 5952 switch (GetElementsKind()) { |
5950 case FAST_ELEMENTS: { | 5953 case FAST_ELEMENTS: { |
5951 uint32_t length = IsJSArray() ? | 5954 uint32_t length = IsJSArray() ? |
5952 static_cast<uint32_t> | 5955 static_cast<uint32_t> |
5953 (Smi::cast(JSArray::cast(this)->length())->value()) : | 5956 (Smi::cast(JSArray::cast(this)->length())->value()) : |
5954 static_cast<uint32_t>(FixedArray::cast(elements())->length()); | 5957 static_cast<uint32_t>(FixedArray::cast(elements())->length()); |
5955 return (index < length) && | 5958 if ((index < length) && |
5956 !FixedArray::cast(elements())->get(index)->IsTheHole(); | 5959 !FixedArray::cast(elements())->get(index)->IsTheHole()) { |
5960 return FAST_ELEMENT; | |
5961 } | |
5962 | |
Rico
2010/09/22 15:23:56
remove blank line?
| |
5963 break; | |
5957 } | 5964 } |
5958 case PIXEL_ELEMENTS: { | 5965 case PIXEL_ELEMENTS: { |
5959 PixelArray* pixels = PixelArray::cast(elements()); | 5966 PixelArray* pixels = PixelArray::cast(elements()); |
5960 return (index < static_cast<uint32_t>(pixels->length())); | 5967 if (index < static_cast<uint32_t>(pixels->length())) return FAST_ELEMENT; |
5968 break; | |
5961 } | 5969 } |
5962 case EXTERNAL_BYTE_ELEMENTS: | 5970 case EXTERNAL_BYTE_ELEMENTS: |
5963 case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: | 5971 case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
5964 case EXTERNAL_SHORT_ELEMENTS: | 5972 case EXTERNAL_SHORT_ELEMENTS: |
5965 case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: | 5973 case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
5966 case EXTERNAL_INT_ELEMENTS: | 5974 case EXTERNAL_INT_ELEMENTS: |
5967 case EXTERNAL_UNSIGNED_INT_ELEMENTS: | 5975 case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
5968 case EXTERNAL_FLOAT_ELEMENTS: { | 5976 case EXTERNAL_FLOAT_ELEMENTS: { |
5969 ExternalArray* array = ExternalArray::cast(elements()); | 5977 ExternalArray* array = ExternalArray::cast(elements()); |
5970 return (index < static_cast<uint32_t>(array->length())); | 5978 if (index < static_cast<uint32_t>(array->length())) return FAST_ELEMENT; |
5979 break; | |
5971 } | 5980 } |
5972 case DICTIONARY_ELEMENTS: { | 5981 case DICTIONARY_ELEMENTS: { |
5973 return element_dictionary()->FindEntry(index) | 5982 if (element_dictionary()->FindEntry(index) != |
5974 != NumberDictionary::kNotFound; | 5983 NumberDictionary::kNotFound) { |
5984 return DICTIONARY_ELEMENT; | |
5985 } | |
5986 break; | |
5975 } | 5987 } |
5976 default: | 5988 default: |
5977 UNREACHABLE(); | 5989 UNREACHABLE(); |
5978 break; | 5990 break; |
5979 } | 5991 } |
5980 UNREACHABLE(); | 5992 |
5981 return Heap::null_value(); | 5993 return UNDEFINED_ELEMENT; |
5982 } | 5994 } |
5983 | 5995 |
5984 | 5996 |
5985 bool JSObject::HasElementWithReceiver(JSObject* receiver, uint32_t index) { | 5997 bool JSObject::HasElementWithReceiver(JSObject* receiver, uint32_t index) { |
5986 // Check access rights if needed. | 5998 // Check access rights if needed. |
5987 if (IsAccessCheckNeeded() && | 5999 if (IsAccessCheckNeeded() && |
5988 !Top::MayIndexedAccess(this, index, v8::ACCESS_HAS)) { | 6000 !Top::MayIndexedAccess(this, index, v8::ACCESS_HAS)) { |
5989 Top::ReportFailedAccessCheck(this, v8::ACCESS_HAS); | 6001 Top::ReportFailedAccessCheck(this, v8::ACCESS_HAS); |
5990 return false; | 6002 return false; |
5991 } | 6003 } |
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8900 if (break_point_objects()->IsUndefined()) return 0; | 8912 if (break_point_objects()->IsUndefined()) return 0; |
8901 // Single beak point. | 8913 // Single beak point. |
8902 if (!break_point_objects()->IsFixedArray()) return 1; | 8914 if (!break_point_objects()->IsFixedArray()) return 1; |
8903 // Multiple break points. | 8915 // Multiple break points. |
8904 return FixedArray::cast(break_point_objects())->length(); | 8916 return FixedArray::cast(break_point_objects())->length(); |
8905 } | 8917 } |
8906 #endif | 8918 #endif |
8907 | 8919 |
8908 | 8920 |
8909 } } // namespace v8::internal | 8921 } } // namespace v8::internal |
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