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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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966 // Property access. | 966 // Property access. |
967 MUST_USE_RESULT inline MaybeObject* GetProperty(String* key); | 967 MUST_USE_RESULT inline MaybeObject* GetProperty(String* key); |
968 MUST_USE_RESULT inline MaybeObject* GetProperty( | 968 MUST_USE_RESULT inline MaybeObject* GetProperty( |
969 String* key, | 969 String* key, |
970 PropertyAttributes* attributes); | 970 PropertyAttributes* attributes); |
971 MUST_USE_RESULT MaybeObject* GetPropertyWithReceiver( | 971 MUST_USE_RESULT MaybeObject* GetPropertyWithReceiver( |
972 Object* receiver, | 972 Object* receiver, |
973 String* key, | 973 String* key, |
974 PropertyAttributes* attributes); | 974 PropertyAttributes* attributes); |
975 | 975 |
976 static Handle<Object> GetProperty(Handle<Object> object, Handle<String> key); | |
977 static Handle<Object> GetProperty(Handle<Object> object, | 976 static Handle<Object> GetProperty(Handle<Object> object, |
978 Handle<Object> receiver, | 977 Handle<Object> receiver, |
979 LookupResult* result, | 978 LookupResult* result, |
980 Handle<String> key, | 979 Handle<String> key, |
981 PropertyAttributes* attributes); | 980 PropertyAttributes* attributes); |
982 | 981 |
983 MUST_USE_RESULT MaybeObject* GetProperty(Object* receiver, | 982 MUST_USE_RESULT MaybeObject* GetProperty(Object* receiver, |
984 LookupResult* result, | 983 LookupResult* result, |
985 String* key, | 984 String* key, |
986 PropertyAttributes* attributes); | 985 PropertyAttributes* attributes); |
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1840 bool ShouldConvertToFastDoubleElements(bool* has_smi_only_elements); | 1839 bool ShouldConvertToFastDoubleElements(bool* has_smi_only_elements); |
1841 | 1840 |
1842 // Computes the new capacity when expanding the elements of a JSObject. | 1841 // Computes the new capacity when expanding the elements of a JSObject. |
1843 static int NewElementsCapacity(int old_capacity) { | 1842 static int NewElementsCapacity(int old_capacity) { |
1844 // (old_capacity + 50%) + 16 | 1843 // (old_capacity + 50%) + 16 |
1845 return old_capacity + (old_capacity >> 1) + 16; | 1844 return old_capacity + (old_capacity >> 1) + 16; |
1846 } | 1845 } |
1847 | 1846 |
1848 PropertyType GetLocalPropertyType(String* name); | 1847 PropertyType GetLocalPropertyType(String* name); |
1849 PropertyType GetLocalElementType(uint32_t index); | 1848 PropertyType GetLocalElementType(uint32_t index); |
1850 | |
1851 // These methods do not perform access checks! | |
1852 AccessorPair* GetLocalPropertyAccessorPair(String* name); | 1849 AccessorPair* GetLocalPropertyAccessorPair(String* name); |
1853 AccessorPair* GetLocalElementAccessorPair(uint32_t index); | 1850 AccessorPair* GetLocalElementAccessorPair(uint32_t index); |
1854 | 1851 |
| 1852 // Tells whether the index'th element is present and how it is stored. |
| 1853 enum LocalElementKind { |
| 1854 // There is no element with given index. |
| 1855 UNDEFINED_ELEMENT, |
| 1856 |
| 1857 // Element with given index is handled by interceptor. |
| 1858 INTERCEPTED_ELEMENT, |
| 1859 |
| 1860 // Element with given index is character in string. |
| 1861 STRING_CHARACTER_ELEMENT, |
| 1862 |
| 1863 // Element with given index is stored in fast backing store. |
| 1864 FAST_ELEMENT, |
| 1865 |
| 1866 // Element with given index is stored in slow backing store. |
| 1867 DICTIONARY_ELEMENT |
| 1868 }; |
| 1869 |
| 1870 LocalElementKind GetLocalElementKind(uint32_t index); |
| 1871 |
1855 MUST_USE_RESULT MaybeObject* SetFastElement(uint32_t index, | 1872 MUST_USE_RESULT MaybeObject* SetFastElement(uint32_t index, |
1856 Object* value, | 1873 Object* value, |
1857 StrictModeFlag strict_mode, | 1874 StrictModeFlag strict_mode, |
1858 bool check_prototype); | 1875 bool check_prototype); |
1859 | 1876 |
1860 MUST_USE_RESULT MaybeObject* SetDictionaryElement( | 1877 MUST_USE_RESULT MaybeObject* SetDictionaryElement( |
1861 uint32_t index, | 1878 uint32_t index, |
1862 Object* value, | 1879 Object* value, |
1863 PropertyAttributes attributes, | 1880 PropertyAttributes attributes, |
1864 StrictModeFlag strict_mode, | 1881 StrictModeFlag strict_mode, |
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9001 } else { | 9018 } else { |
9002 value &= ~(1 << bit_position); | 9019 value &= ~(1 << bit_position); |
9003 } | 9020 } |
9004 return value; | 9021 return value; |
9005 } | 9022 } |
9006 }; | 9023 }; |
9007 | 9024 |
9008 } } // namespace v8::internal | 9025 } } // namespace v8::internal |
9009 | 9026 |
9010 #endif // V8_OBJECTS_H_ | 9027 #endif // V8_OBJECTS_H_ |
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