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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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1407 } | 1407 } |
1408 MaybeObject* maybe_obj = GetElementsTransitionMap(GetIsolate(), | 1408 MaybeObject* maybe_obj = GetElementsTransitionMap(GetIsolate(), |
1409 elements_kind); | 1409 elements_kind); |
1410 if (!maybe_obj->ToObject(&obj)) return maybe_obj; | 1410 if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
1411 set_map(Map::cast(obj)); | 1411 set_map(Map::cast(obj)); |
1412 initialize_elements(); | 1412 initialize_elements(); |
1413 return this; | 1413 return this; |
1414 } | 1414 } |
1415 | 1415 |
1416 | 1416 |
| 1417 MaybeObject* JSObject::AddFastPropertyUsingMap(Map* map) { |
| 1418 ASSERT(this->map()->NumberOfOwnDescriptors() + 1 == |
| 1419 map->NumberOfOwnDescriptors()); |
| 1420 if (this->map()->unused_property_fields() == 0) { |
| 1421 int new_size = properties()->length() + map->unused_property_fields() + 1; |
| 1422 FixedArray* new_properties; |
| 1423 MaybeObject* maybe_properties = properties()->CopySize(new_size); |
| 1424 if (!maybe_properties->To(&new_properties)) return maybe_properties; |
| 1425 set_properties(new_properties); |
| 1426 } |
| 1427 set_map(map); |
| 1428 return this; |
| 1429 } |
| 1430 |
| 1431 |
| 1432 bool JSObject::TryTransitionToField(Handle<JSObject> object, |
| 1433 Handle<String> key) { |
| 1434 if (!object->map()->HasTransitionArray()) return false; |
| 1435 Handle<TransitionArray> transitions(object->map()->transitions()); |
| 1436 int transition = transitions->Search(*key); |
| 1437 if (transition == TransitionArray::kNotFound) return false; |
| 1438 PropertyDetails target_details = transitions->GetTargetDetails(transition); |
| 1439 if (target_details.type() != FIELD) return false; |
| 1440 if (target_details.attributes() != NONE) return false; |
| 1441 Handle<Map> target(transitions->GetTarget(transition)); |
| 1442 JSObject::AddFastPropertyUsingMap(object, target); |
| 1443 return true; |
| 1444 } |
| 1445 |
| 1446 |
1417 ACCESSORS(Oddball, to_string, String, kToStringOffset) | 1447 ACCESSORS(Oddball, to_string, String, kToStringOffset) |
1418 ACCESSORS(Oddball, to_number, Object, kToNumberOffset) | 1448 ACCESSORS(Oddball, to_number, Object, kToNumberOffset) |
1419 | 1449 |
1420 | 1450 |
1421 byte Oddball::kind() { | 1451 byte Oddball::kind() { |
1422 return Smi::cast(READ_FIELD(this, kKindOffset))->value(); | 1452 return Smi::cast(READ_FIELD(this, kKindOffset))->value(); |
1423 } | 1453 } |
1424 | 1454 |
1425 | 1455 |
1426 void Oddball::set_kind(byte value) { | 1456 void Oddball::set_kind(byte value) { |
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5540 #undef WRITE_UINT32_FIELD | 5570 #undef WRITE_UINT32_FIELD |
5541 #undef READ_SHORT_FIELD | 5571 #undef READ_SHORT_FIELD |
5542 #undef WRITE_SHORT_FIELD | 5572 #undef WRITE_SHORT_FIELD |
5543 #undef READ_BYTE_FIELD | 5573 #undef READ_BYTE_FIELD |
5544 #undef WRITE_BYTE_FIELD | 5574 #undef WRITE_BYTE_FIELD |
5545 | 5575 |
5546 | 5576 |
5547 } } // namespace v8::internal | 5577 } } // namespace v8::internal |
5548 | 5578 |
5549 #endif // V8_OBJECTS_INL_H_ | 5579 #endif // V8_OBJECTS_INL_H_ |
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