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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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| 4188 CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kPrototypeOffset, value, mode); | 4188 CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kPrototypeOffset, value, mode); |
| 4189 } | 4189 } |
| 4190 | 4190 |
| 4191 | 4191 |
| 4192 // If the descriptor is using the empty transition array, install a new empty | 4192 // If the descriptor is using the empty transition array, install a new empty |
| 4193 // transition array that will have place for an element transition. | 4193 // transition array that will have place for an element transition. |
| 4194 static MaybeObject* EnsureHasTransitionArray(Map* map) { | 4194 static MaybeObject* EnsureHasTransitionArray(Map* map) { |
| 4195 TransitionArray* transitions; | 4195 TransitionArray* transitions; |
| 4196 MaybeObject* maybe_transitions; | 4196 MaybeObject* maybe_transitions; |
| 4197 if (!map->HasTransitionArray()) { | 4197 if (!map->HasTransitionArray()) { |
| 4198 maybe_transitions = TransitionArray::Allocate(0); | 4198 maybe_transitions = TransitionArray::Allocate(map->GetIsolate(), 0); |
| 4199 if (!maybe_transitions->To(&transitions)) return maybe_transitions; | 4199 if (!maybe_transitions->To(&transitions)) return maybe_transitions; |
| 4200 transitions->set_back_pointer_storage(map->GetBackPointer()); | 4200 transitions->set_back_pointer_storage(map->GetBackPointer()); |
| 4201 } else if (!map->transitions()->IsFullTransitionArray()) { | 4201 } else if (!map->transitions()->IsFullTransitionArray()) { |
| 4202 maybe_transitions = map->transitions()->ExtendToFullTransitionArray(); | 4202 maybe_transitions = map->transitions()->ExtendToFullTransitionArray(); |
| 4203 if (!maybe_transitions->To(&transitions)) return maybe_transitions; | 4203 if (!maybe_transitions->To(&transitions)) return maybe_transitions; |
| 4204 } else { | 4204 } else { |
| 4205 return map; | 4205 return map; |
| 4206 } | 4206 } |
| 4207 map->set_transitions(transitions); | 4207 map->set_transitions(transitions); |
| 4208 return transitions; | 4208 return transitions; |
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| 6285 #undef WRITE_UINT32_FIELD | 6285 #undef WRITE_UINT32_FIELD |
| 6286 #undef READ_SHORT_FIELD | 6286 #undef READ_SHORT_FIELD |
| 6287 #undef WRITE_SHORT_FIELD | 6287 #undef WRITE_SHORT_FIELD |
| 6288 #undef READ_BYTE_FIELD | 6288 #undef READ_BYTE_FIELD |
| 6289 #undef WRITE_BYTE_FIELD | 6289 #undef WRITE_BYTE_FIELD |
| 6290 | 6290 |
| 6291 | 6291 |
| 6292 } } // namespace v8::internal | 6292 } } // namespace v8::internal |
| 6293 | 6293 |
| 6294 #endif // V8_OBJECTS_INL_H_ | 6294 #endif // V8_OBJECTS_INL_H_ |
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