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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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2182 // the elements array may be shared by a few objects and so before | 2182 // the elements array may be shared by a few objects and so before |
2183 // writing to any element the array must be copied. Use | 2183 // writing to any element the array must be copied. Use |
2184 // EnsureWritableFastElements in this case. | 2184 // EnsureWritableFastElements in this case. |
2185 // | 2185 // |
2186 // In the slow mode the elements is either a NumberDictionary, an | 2186 // In the slow mode the elements is either a NumberDictionary, an |
2187 // ExternalArray, or a FixedArray parameter map for a (sloppy) | 2187 // ExternalArray, or a FixedArray parameter map for a (sloppy) |
2188 // arguments object. | 2188 // arguments object. |
2189 DECL_ACCESSORS(elements, FixedArrayBase) | 2189 DECL_ACCESSORS(elements, FixedArrayBase) |
2190 inline void initialize_elements(); | 2190 inline void initialize_elements(); |
2191 MUST_USE_RESULT inline MaybeObject* ResetElements(); | 2191 MUST_USE_RESULT inline MaybeObject* ResetElements(); |
| 2192 static void ResetElements(Handle<JSObject> object); |
| 2193 static inline void SetMapAndElements(Handle<JSObject> object, |
| 2194 Handle<Map> map, |
| 2195 Handle<FixedArrayBase> elements); |
2192 inline ElementsKind GetElementsKind(); | 2196 inline ElementsKind GetElementsKind(); |
2193 inline ElementsAccessor* GetElementsAccessor(); | 2197 inline ElementsAccessor* GetElementsAccessor(); |
2194 // Returns true if an object has elements of FAST_SMI_ELEMENTS ElementsKind. | 2198 // Returns true if an object has elements of FAST_SMI_ELEMENTS ElementsKind. |
2195 inline bool HasFastSmiElements(); | 2199 inline bool HasFastSmiElements(); |
2196 // Returns true if an object has elements of FAST_ELEMENTS ElementsKind. | 2200 // Returns true if an object has elements of FAST_ELEMENTS ElementsKind. |
2197 inline bool HasFastObjectElements(); | 2201 inline bool HasFastObjectElements(); |
2198 // Returns true if an object has elements of FAST_ELEMENTS or | 2202 // Returns true if an object has elements of FAST_ELEMENTS or |
2199 // FAST_SMI_ONLY_ELEMENTS. | 2203 // FAST_SMI_ONLY_ELEMENTS. |
2200 inline bool HasFastSmiOrObjectElements(); | 2204 inline bool HasFastSmiOrObjectElements(); |
2201 // Returns true if an object has any of the fast elements kinds. | 2205 // Returns true if an object has any of the fast elements kinds. |
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2230 inline bool HasFixedUint16Elements(); | 2234 inline bool HasFixedUint16Elements(); |
2231 inline bool HasFixedInt32Elements(); | 2235 inline bool HasFixedInt32Elements(); |
2232 inline bool HasFixedUint32Elements(); | 2236 inline bool HasFixedUint32Elements(); |
2233 inline bool HasFixedFloat32Elements(); | 2237 inline bool HasFixedFloat32Elements(); |
2234 inline bool HasFixedFloat64Elements(); | 2238 inline bool HasFixedFloat64Elements(); |
2235 | 2239 |
2236 bool HasFastArgumentsElements(); | 2240 bool HasFastArgumentsElements(); |
2237 bool HasDictionaryArgumentsElements(); | 2241 bool HasDictionaryArgumentsElements(); |
2238 inline SeededNumberDictionary* element_dictionary(); // Gets slow elements. | 2242 inline SeededNumberDictionary* element_dictionary(); // Gets slow elements. |
2239 | 2243 |
2240 inline void set_map_and_elements( | |
2241 Map* map, | |
2242 FixedArrayBase* value, | |
2243 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); | |
2244 | |
2245 // Requires: HasFastElements(). | 2244 // Requires: HasFastElements(). |
2246 static Handle<FixedArray> EnsureWritableFastElements( | 2245 static Handle<FixedArray> EnsureWritableFastElements( |
2247 Handle<JSObject> object); | 2246 Handle<JSObject> object); |
2248 MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements(); | 2247 MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements(); |
2249 | 2248 |
2250 // Collects elements starting at index 0. | 2249 // Collects elements starting at index 0. |
2251 // Undefined values are placed after non-undefined values. | 2250 // Undefined values are placed after non-undefined values. |
2252 // Returns the number of non-undefined values. | 2251 // Returns the number of non-undefined values. |
2253 static Handle<Object> PrepareElementsForSort(Handle<JSObject> object, | 2252 static Handle<Object> PrepareElementsForSort(Handle<JSObject> object, |
2254 uint32_t limit); | 2253 uint32_t limit); |
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10820 } else { | 10819 } else { |
10821 value &= ~(1 << bit_position); | 10820 value &= ~(1 << bit_position); |
10822 } | 10821 } |
10823 return value; | 10822 return value; |
10824 } | 10823 } |
10825 }; | 10824 }; |
10826 | 10825 |
10827 } } // namespace v8::internal | 10826 } } // namespace v8::internal |
10828 | 10827 |
10829 #endif // V8_OBJECTS_H_ | 10828 #endif // V8_OBJECTS_H_ |
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