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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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319 | 319 |
320 // Returns the pointer to the start of the data in the vector. | 320 // Returns the pointer to the start of the data in the vector. |
321 T* start() const { return start_; } | 321 T* start() const { return start_; } |
322 | 322 |
323 // Access individual vector elements - checks bounds in debug mode. | 323 // Access individual vector elements - checks bounds in debug mode. |
324 T& operator[](int index) const { | 324 T& operator[](int index) const { |
325 ASSERT(0 <= index && index < length_); | 325 ASSERT(0 <= index && index < length_); |
326 return start_[index]; | 326 return start_[index]; |
327 } | 327 } |
328 | 328 |
| 329 T& at(int i) const { return operator[](i); } |
| 330 |
329 T& first() { return start_[0]; } | 331 T& first() { return start_[0]; } |
330 | 332 |
331 T& last() { return start_[length_ - 1]; } | 333 T& last() { return start_[length_ - 1]; } |
332 | 334 |
333 // Returns a clone of this vector with a new backing store. | 335 // Returns a clone of this vector with a new backing store. |
334 Vector<T> Clone() const { | 336 Vector<T> Clone() const { |
335 T* result = NewArray<T>(length_); | 337 T* result = NewArray<T>(length_); |
336 for (int i = 0; i < length_; i++) result[i] = start_[i]; | 338 for (int i = 0; i < length_; i++) result[i] = start_[i]; |
337 return Vector<T>(result, length_); | 339 return Vector<T>(result, length_); |
338 } | 340 } |
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718 } | 720 } |
719 | 721 |
720 template <class Dest, class Source> | 722 template <class Dest, class Source> |
721 inline Dest BitCast(Source* source) { | 723 inline Dest BitCast(Source* source) { |
722 return BitCast<Dest>(reinterpret_cast<uintptr_t>(source)); | 724 return BitCast<Dest>(reinterpret_cast<uintptr_t>(source)); |
723 } | 725 } |
724 | 726 |
725 } } // namespace v8::internal | 727 } } // namespace v8::internal |
726 | 728 |
727 #endif // V8_UTILS_H_ | 729 #endif // V8_UTILS_H_ |
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