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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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4278 if (!transitions()->HasPrototypeTransitions()) { | 4278 if (!transitions()->HasPrototypeTransitions()) { |
4279 return GetHeap()->empty_fixed_array(); | 4279 return GetHeap()->empty_fixed_array(); |
4280 } | 4280 } |
4281 return transitions()->GetPrototypeTransitions(); | 4281 return transitions()->GetPrototypeTransitions(); |
4282 } | 4282 } |
4283 | 4283 |
4284 | 4284 |
4285 MaybeObject* Map::SetPrototypeTransitions(FixedArray* proto_transitions) { | 4285 MaybeObject* Map::SetPrototypeTransitions(FixedArray* proto_transitions) { |
4286 MaybeObject* allow_prototype = EnsureHasTransitionArray(this); | 4286 MaybeObject* allow_prototype = EnsureHasTransitionArray(this); |
4287 if (allow_prototype->IsFailure()) return allow_prototype; | 4287 if (allow_prototype->IsFailure()) return allow_prototype; |
| 4288 int old_number_of_transitions = NumberOfProtoTransitions(); |
4288 #ifdef DEBUG | 4289 #ifdef DEBUG |
4289 if (HasPrototypeTransitions()) { | 4290 if (HasPrototypeTransitions()) { |
4290 ASSERT(GetPrototypeTransitions() != proto_transitions); | 4291 ASSERT(GetPrototypeTransitions() != proto_transitions); |
4291 ZapPrototypeTransitions(); | 4292 ZapPrototypeTransitions(); |
4292 } | 4293 } |
4293 #endif | 4294 #endif |
4294 transitions()->SetPrototypeTransitions(proto_transitions); | 4295 transitions()->SetPrototypeTransitions(proto_transitions); |
| 4296 SetNumberOfProtoTransitions(old_number_of_transitions); |
4295 return this; | 4297 return this; |
4296 } | 4298 } |
4297 | 4299 |
4298 | 4300 |
4299 bool Map::HasPrototypeTransitions() { | 4301 bool Map::HasPrototypeTransitions() { |
4300 return HasTransitionArray() && transitions()->HasPrototypeTransitions(); | 4302 return HasTransitionArray() && transitions()->HasPrototypeTransitions(); |
4301 } | 4303 } |
4302 | 4304 |
4303 | 4305 |
4304 TransitionArray* Map::transitions() { | 4306 TransitionArray* Map::transitions() { |
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6178 #undef WRITE_UINT32_FIELD | 6180 #undef WRITE_UINT32_FIELD |
6179 #undef READ_SHORT_FIELD | 6181 #undef READ_SHORT_FIELD |
6180 #undef WRITE_SHORT_FIELD | 6182 #undef WRITE_SHORT_FIELD |
6181 #undef READ_BYTE_FIELD | 6183 #undef READ_BYTE_FIELD |
6182 #undef WRITE_BYTE_FIELD | 6184 #undef WRITE_BYTE_FIELD |
6183 | 6185 |
6184 | 6186 |
6185 } } // namespace v8::internal | 6187 } } // namespace v8::internal |
6186 | 6188 |
6187 #endif // V8_OBJECTS_INL_H_ | 6189 #endif // V8_OBJECTS_INL_H_ |
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