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| 1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium 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 #ifndef CC_SCOPED_PTR_DEQUE_H_ | 5 #ifndef CC_SCOPED_PTR_DEQUE_H_ |
| 6 #define CC_SCOPED_PTR_DEQUE_H_ | 6 #define CC_SCOPED_PTR_DEQUE_H_ |
| 7 | 7 |
| 8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
| 9 #include "base/logging.h" |
| 9 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
| 10 #include "base/stl_util.h" | 11 #include "base/stl_util.h" |
| 11 #include <deque> | 12 #include <deque> |
| 12 | 13 |
| 13 namespace cc { | 14 namespace cc { |
| 14 | 15 |
| 15 // This type acts like a deque<scoped_ptr> based on top of std::deque. The | 16 // This type acts like a deque<scoped_ptr> based on top of std::deque. The |
| 16 // ScopedPtrDeque has ownership of all elements in the deque. | 17 // ScopedPtrDeque has ownership of all elements in the deque. |
| 17 template <typename T> | 18 template <typename T> |
| 18 class ScopedPtrDeque { | 19 class ScopedPtrDeque { |
| 19 public: | 20 public: |
| 20 typedef typename std::deque<T*>::iterator iterator; | 21 typedef typename std::deque<T*>::iterator iterator; |
| 21 typedef typename std::deque<T*>::const_iterator const_iterator; | 22 typedef typename std::deque<T*>::const_iterator const_iterator; |
| 22 typedef typename std::deque<T*>::reverse_iterator reverse_iterator; | 23 typedef typename std::deque<T*>::reverse_iterator reverse_iterator; |
| 23 typedef typename std::deque<T*>::const_reverse_iterator const_reverse_iterator
; | 24 typedef typename std::deque<T*>::const_reverse_iterator const_reverse_iterator
; |
| 24 | 25 |
| 25 ScopedPtrDeque() {} | 26 ScopedPtrDeque() {} |
| 26 | 27 |
| 27 ~ScopedPtrDeque() { clear(); } | 28 ~ScopedPtrDeque() { clear(); } |
| 28 | 29 |
| 29 size_t size() const { | 30 size_t size() const { |
| 30 return data_.size(); | 31 return data_.size(); |
| 31 } | 32 } |
| 32 | 33 |
| 33 T* Peek(size_t index) const { | 34 T* Peek(size_t index) const { |
| 34 ASSERT(index < size()); | 35 DCHECK(index < size()); |
| 35 return data_[index]; | 36 return data_[index]; |
| 36 } | 37 } |
| 37 | 38 |
| 38 T* operator[](size_t index) const { | 39 T* operator[](size_t index) const { |
| 39 return Peek(index); | 40 return Peek(index); |
| 40 } | 41 } |
| 41 | 42 |
| 42 T* first() const { | 43 T* first() const { |
| 43 ASSERT(!isEmpty()); | 44 DCHECK(!isEmpty()); |
| 44 return Peek(0); | 45 return Peek(0); |
| 45 } | 46 } |
| 46 | 47 |
| 47 T* last() const { | 48 T* last() const { |
| 48 ASSERT(!isEmpty()); | 49 DCHECK(!isEmpty()); |
| 49 return Peek(size() - 1); | 50 return Peek(size() - 1); |
| 50 } | 51 } |
| 51 | 52 |
| 52 bool isEmpty() const { | 53 bool isEmpty() const { |
| 53 return size() == 0; | 54 return size() == 0; |
| 54 } | 55 } |
| 55 | 56 |
| 56 scoped_ptr<T> takeFirst() { | 57 scoped_ptr<T> takeFirst() { |
| 57 scoped_ptr<T> ret(first()); | 58 scoped_ptr<T> ret(first()); |
| 58 data_.pop_front(); | 59 data_.pop_front(); |
| 59 return ret.Pass(); | 60 return ret.Pass(); |
| 60 } | 61 } |
| 61 | 62 |
| 62 scoped_ptr<T> takeLast() { | 63 scoped_ptr<T> takeLast() { |
| 63 scoped_ptr<T> ret(last()); | 64 scoped_ptr<T> ret(last()); |
| 64 data_.pop_back(); | 65 data_.pop_back(); |
| 65 return ret.Pass(); | 66 return ret.Pass(); |
| 66 } | 67 } |
| 67 | 68 |
| 68 void clear() { | 69 void clear() { |
| 69 STLDeleteElements(&data_); | 70 STLDeleteElements(&data_); |
| 70 } | 71 } |
| 71 | 72 |
| 72 void append(scoped_ptr<T> item) { | 73 void append(scoped_ptr<T> item) { |
| 73 data_.push_back(item.release()); | 74 data_.push_back(item.release()); |
| 74 } | 75 } |
| 75 | 76 |
| 76 void insert(size_t index, scoped_ptr<T> item) { | 77 void insert(size_t index, scoped_ptr<T> item) { |
| 77 ASSERT(index < size()); | 78 DCHECK(index < size()); |
| 78 data_.insert(data_.begin() + index, item.release()); | 79 data_.insert(data_.begin() + index, item.release()); |
| 79 } | 80 } |
| 80 | 81 |
| 81 iterator begin() { return data_.begin(); } | 82 iterator begin() { return data_.begin(); } |
| 82 const_iterator begin() const { return data_.begin(); } | 83 const_iterator begin() const { return data_.begin(); } |
| 83 iterator end() { return data_.end(); } | 84 iterator end() { return data_.end(); } |
| 84 const_iterator end() const { return data_.end(); } | 85 const_iterator end() const { return data_.end(); } |
| 85 | 86 |
| 86 reverse_iterator rbegin() { return data_.rbegin(); } | 87 reverse_iterator rbegin() { return data_.rbegin(); } |
| 87 const_reverse_iterator rbegin() const { return data_.rbegin(); } | 88 const_reverse_iterator rbegin() const { return data_.rbegin(); } |
| 88 reverse_iterator rend() { return data_.rend(); } | 89 reverse_iterator rend() { return data_.rend(); } |
| 89 const_reverse_iterator rend() const { return data_.rend(); } | 90 const_reverse_iterator rend() const { return data_.rend(); } |
| 90 | 91 |
| 91 private: | 92 private: |
| 92 std::deque<T*> data_; | 93 std::deque<T*> data_; |
| 93 | 94 |
| 94 DISALLOW_COPY_AND_ASSIGN(ScopedPtrDeque); | 95 DISALLOW_COPY_AND_ASSIGN(ScopedPtrDeque); |
| 95 }; | 96 }; |
| 96 | 97 |
| 97 } // namespace cc | 98 } // namespace cc |
| 98 | 99 |
| 99 #endif // CC_SCOPED_PTR_DEQUE_H_ | 100 #endif // CC_SCOPED_PTR_DEQUE_H_ |
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