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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "src/transitions.h" | 5 #include "src/transitions.h" |
| 6 | 6 |
| 7 #include "src/objects-inl.h" | 7 #include "src/objects-inl.h" |
| 8 #include "src/transitions-inl.h" | 8 #include "src/transitions-inl.h" |
| 9 #include "src/utils.h" | 9 #include "src/utils.h" |
| 10 | 10 |
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| 385 return (t->length() - kFirstIndex) / kTransitionSize; | 385 return (t->length() - kFirstIndex) / kTransitionSize; |
| 386 } | 386 } |
| 387 | 387 |
| 388 | 388 |
| 389 // Private static helper functions. | 389 // Private static helper functions. |
| 390 | 390 |
| 391 Handle<TransitionArray> TransitionArray::Allocate(Isolate* isolate, | 391 Handle<TransitionArray> TransitionArray::Allocate(Isolate* isolate, |
| 392 int number_of_transitions, | 392 int number_of_transitions, |
| 393 int slack) { | 393 int slack) { |
| 394 Handle<FixedArray> array = isolate->factory()->NewFixedArray( | 394 Handle<FixedArray> array = isolate->factory()->NewFixedArray( |
| 395 LengthFor(number_of_transitions + slack), TENURED); | 395 LengthFor(number_of_transitions + slack)); |
| 396 array->set(kPrototypeTransitionsIndex, Smi::FromInt(0)); | 396 array->set(kPrototypeTransitionsIndex, Smi::FromInt(0)); |
| 397 array->set(kTransitionLengthIndex, Smi::FromInt(number_of_transitions)); | 397 array->set(kTransitionLengthIndex, Smi::FromInt(number_of_transitions)); |
| 398 return Handle<TransitionArray>::cast(array); | 398 return Handle<TransitionArray>::cast(array); |
| 399 } | 399 } |
| 400 | 400 |
| 401 | 401 |
| 402 static void ZapTransitionArray(TransitionArray* transitions) { | 402 static void ZapTransitionArray(TransitionArray* transitions) { |
| 403 MemsetPointer(transitions->data_start(), | 403 MemsetPointer(transitions->data_start(), |
| 404 transitions->GetHeap()->the_hole_value(), | 404 transitions->GetHeap()->the_hole_value(), |
| 405 transitions->length()); | 405 transitions->length()); |
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| 540 PropertyAttributes attributes, | 540 PropertyAttributes attributes, |
| 541 int* out_insertion_index) { | 541 int* out_insertion_index) { |
| 542 int transition = SearchName(name, out_insertion_index); | 542 int transition = SearchName(name, out_insertion_index); |
| 543 if (transition == kNotFound) { | 543 if (transition == kNotFound) { |
| 544 return kNotFound; | 544 return kNotFound; |
| 545 } | 545 } |
| 546 return SearchDetails(transition, kind, attributes, out_insertion_index); | 546 return SearchDetails(transition, kind, attributes, out_insertion_index); |
| 547 } | 547 } |
| 548 } // namespace internal | 548 } // namespace internal |
| 549 } // namespace v8 | 549 } // namespace v8 |
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