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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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105 FixedArrayBase* backing_store = NULL) = 0; | 105 FixedArrayBase* backing_store = NULL) = 0; |
106 | 106 |
107 // Modifies the length data property as specified for JSArrays and resizes the | 107 // Modifies the length data property as specified for JSArrays and resizes the |
108 // underlying backing store accordingly. The method honors the semantics of | 108 // underlying backing store accordingly. The method honors the semantics of |
109 // changing array sizes as defined in EcmaScript 5.1 15.4.5.2, i.e. array that | 109 // changing array sizes as defined in EcmaScript 5.1 15.4.5.2, i.e. array that |
110 // have non-deletable elements can only be shrunk to the size of highest | 110 // have non-deletable elements can only be shrunk to the size of highest |
111 // element that is non-deletable. | 111 // element that is non-deletable. |
112 MUST_USE_RESULT virtual Handle<Object> SetLength( | 112 MUST_USE_RESULT virtual Handle<Object> SetLength( |
113 Handle<JSArray> holder, | 113 Handle<JSArray> holder, |
114 Handle<Object> new_length) = 0; | 114 Handle<Object> new_length) = 0; |
115 MUST_USE_RESULT virtual MaybeObject* SetLength(JSArray* holder, | |
116 Object* new_length) = 0; | |
117 | 115 |
118 // Modifies both the length and capacity of a JSArray, resizing the underlying | 116 // Modifies both the length and capacity of a JSArray, resizing the underlying |
119 // backing store as necessary. This method does NOT honor the semantics of | 117 // backing store as necessary. This method does NOT honor the semantics of |
120 // EcmaScript 5.1 15.4.5.2, arrays can be shrunk beyond non-deletable | 118 // EcmaScript 5.1 15.4.5.2, arrays can be shrunk beyond non-deletable |
121 // elements. This method should only be called for array expansion OR by | 119 // elements. This method should only be called for array expansion OR by |
122 // runtime JavaScript code that use InternalArrays and don't care about | 120 // runtime JavaScript code that use InternalArrays and don't care about |
123 // EcmaScript 5.1 semantics. | 121 // EcmaScript 5.1 semantics. |
124 MUST_USE_RESULT virtual MaybeObject* SetCapacityAndLength(JSArray* array, | 122 MUST_USE_RESULT virtual MaybeObject* SetCapacityAndLength(JSArray* array, |
125 int capacity, | 123 int capacity, |
126 int length) = 0; | 124 int length) = 0; |
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202 | 200 |
203 void CheckArrayAbuse(JSObject* obj, const char* op, uint32_t key, | 201 void CheckArrayAbuse(JSObject* obj, const char* op, uint32_t key, |
204 bool allow_appending = false); | 202 bool allow_appending = false); |
205 | 203 |
206 Handle<Object> ArrayConstructInitializeElements(Handle<JSArray> array, | 204 Handle<Object> ArrayConstructInitializeElements(Handle<JSArray> array, |
207 Arguments* args); | 205 Arguments* args); |
208 | 206 |
209 } } // namespace v8::internal | 207 } } // namespace v8::internal |
210 | 208 |
211 #endif // V8_ELEMENTS_H_ | 209 #endif // V8_ELEMENTS_H_ |
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