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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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219 return AddElementsToFixedArray( | 219 return AddElementsToFixedArray( |
220 receiver, holder, to, handle(holder->elements())); | 220 receiver, holder, to, handle(holder->elements())); |
221 } | 221 } |
222 | 222 |
223 // Returns a shared ElementsAccessor for the specified ElementsKind. | 223 // Returns a shared ElementsAccessor for the specified ElementsKind. |
224 static ElementsAccessor* ForKind(ElementsKind elements_kind) { | 224 static ElementsAccessor* ForKind(ElementsKind elements_kind) { |
225 ASSERT(elements_kind < kElementsKindCount); | 225 ASSERT(elements_kind < kElementsKindCount); |
226 return elements_accessors_[elements_kind]; | 226 return elements_accessors_[elements_kind]; |
227 } | 227 } |
228 | 228 |
229 // TODO(ishell): Temporary wrapper until handlified. | 229 static ElementsAccessor* ForArray(Handle<FixedArrayBase> array); |
230 inline static ElementsAccessor* ForArray(Handle<FixedArrayBase> array) { | |
231 return ForArray(*array); | |
232 } | |
233 static ElementsAccessor* ForArray(FixedArrayBase* array); | |
234 | 230 |
235 static void InitializeOncePerProcess(); | 231 static void InitializeOncePerProcess(); |
236 static void TearDown(); | 232 static void TearDown(); |
237 | 233 |
238 protected: | 234 protected: |
239 friend class SloppyArgumentsElementsAccessor; | 235 friend class SloppyArgumentsElementsAccessor; |
240 | 236 |
241 virtual uint32_t GetCapacity(FixedArrayBase* backing_store) = 0; | 237 virtual uint32_t GetCapacity(Handle<FixedArrayBase> backing_store) = 0; |
242 | 238 |
243 // Element handlers distinguish between indexes and keys when they manipulate | 239 // Element handlers distinguish between indexes and keys when they manipulate |
244 // elements. Indexes refer to elements in terms of their location in the | 240 // elements. Indexes refer to elements in terms of their location in the |
245 // underlying storage's backing store representation, and are between 0 and | 241 // underlying storage's backing store representation, and are between 0 and |
246 // GetCapacity. Keys refer to elements in terms of the value that would be | 242 // GetCapacity. Keys refer to elements in terms of the value that would be |
247 // specified in JavaScript to access the element. In most implementations, | 243 // specified in JavaScript to access the element. In most implementations, |
248 // keys are equivalent to indexes, and GetKeyForIndex returns the same value | 244 // keys are equivalent to indexes, and GetKeyForIndex returns the same value |
249 // it is passed. In the NumberDictionary ElementsAccessor, GetKeyForIndex maps | 245 // it is passed. In the NumberDictionary ElementsAccessor, GetKeyForIndex maps |
250 // the index to a key using the KeyAt method on the NumberDictionary. | 246 // the index to a key using the KeyAt method on the NumberDictionary. |
251 virtual uint32_t GetKeyForIndex(Handle<FixedArrayBase> backing_store, | 247 virtual uint32_t GetKeyForIndex(Handle<FixedArrayBase> backing_store, |
252 uint32_t index) = 0; | 248 uint32_t index) = 0; |
253 | 249 |
254 // TODO(ishell): Non-handlified versions, used only by accessors' | |
255 // implementations. To be removed once elements.cc is handlified. | |
256 MUST_USE_RESULT virtual PropertyAttributes GetAttributes( | |
257 Object* receiver, | |
258 JSObject* holder, | |
259 uint32_t key, | |
260 FixedArrayBase* backing_store) = 0; | |
261 | |
262 MUST_USE_RESULT virtual PropertyType GetType( | |
263 Object* receiver, | |
264 JSObject* holder, | |
265 uint32_t key, | |
266 FixedArrayBase* backing_store) = 0; | |
267 | |
268 private: | 250 private: |
269 static ElementsAccessor** elements_accessors_; | 251 static ElementsAccessor** elements_accessors_; |
270 const char* name_; | 252 const char* name_; |
271 | 253 |
272 DISALLOW_COPY_AND_ASSIGN(ElementsAccessor); | 254 DISALLOW_COPY_AND_ASSIGN(ElementsAccessor); |
273 }; | 255 }; |
274 | 256 |
275 void CheckArrayAbuse(Handle<JSObject> obj, const char* op, uint32_t key, | 257 void CheckArrayAbuse(Handle<JSObject> obj, const char* op, uint32_t key, |
276 bool allow_appending = false); | 258 bool allow_appending = false); |
277 | 259 |
278 Handle<Object> ArrayConstructInitializeElements(Handle<JSArray> array, | 260 Handle<Object> ArrayConstructInitializeElements(Handle<JSArray> array, |
279 Arguments* args); | 261 Arguments* args); |
280 | 262 |
281 } } // namespace v8::internal | 263 } } // namespace v8::internal |
282 | 264 |
283 #endif // V8_ELEMENTS_H_ | 265 #endif // V8_ELEMENTS_H_ |
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