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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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523 T* position = current_chunk_.start() + index_; | 523 T* position = current_chunk_.start() + index_; |
524 index_ += size; | 524 index_ += size; |
525 size_ += size; | 525 size_ += size; |
526 for (int i = 0; i < size; i++) { | 526 for (int i = 0; i < size; i++) { |
527 position[i] = initial_value; | 527 position[i] = initial_value; |
528 } | 528 } |
529 return Vector<T>(position, size); | 529 return Vector<T>(position, size); |
530 } | 530 } |
531 | 531 |
532 | 532 |
| 533 // Add a contiguous block of elements and return a vector backed |
| 534 // by the added block. |
| 535 // A basic Collector will keep this vector valid as long as the Collector |
| 536 // is alive. |
| 537 inline Vector<T> AddBlock(Vector<const T> source) { |
| 538 if (source.length() > current_chunk_.length() - index_) { |
| 539 Grow(source.length()); |
| 540 } |
| 541 T* position = current_chunk_.start() + index_; |
| 542 index_ += source.length(); |
| 543 size_ += source.length(); |
| 544 for (int i = 0; i < source.length(); i++) { |
| 545 position[i] = source[i]; |
| 546 } |
| 547 return Vector<T>(position, source.length()); |
| 548 } |
| 549 |
| 550 |
533 // Write the contents of the collector into the provided vector. | 551 // Write the contents of the collector into the provided vector. |
534 void WriteTo(Vector<T> destination) { | 552 void WriteTo(Vector<T> destination) { |
535 ASSERT(size_ <= destination.length()); | 553 ASSERT(size_ <= destination.length()); |
536 int position = 0; | 554 int position = 0; |
537 for (int i = 0; i < chunks_.length(); i++) { | 555 for (int i = 0; i < chunks_.length(); i++) { |
538 Vector<T> chunk = chunks_.at(i); | 556 Vector<T> chunk = chunks_.at(i); |
539 for (int j = 0; j < chunk.length(); j++) { | 557 for (int j = 0; j < chunk.length(); j++) { |
540 destination[position] = chunk[j]; | 558 destination[position] = chunk[j]; |
541 position++; | 559 position++; |
542 } | 560 } |
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754 } | 772 } |
755 | 773 |
756 template <class Dest, class Source> | 774 template <class Dest, class Source> |
757 inline Dest BitCast(Source* source) { | 775 inline Dest BitCast(Source* source) { |
758 return BitCast<Dest>(reinterpret_cast<uintptr_t>(source)); | 776 return BitCast<Dest>(reinterpret_cast<uintptr_t>(source)); |
759 } | 777 } |
760 | 778 |
761 } } // namespace v8::internal | 779 } } // namespace v8::internal |
762 | 780 |
763 #endif // V8_UTILS_H_ | 781 #endif // V8_UTILS_H_ |
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