Part 1 of cc/ directory shuffles: base

cc/scoped_ptr_deque.h

-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CC_SCOPED_PTR_DEQUE_H_
-#define CC_SCOPED_PTR_DEQUE_H_
-
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/stl_util.h"
-#include <deque>
-
-namespace cc {
-
-// This type acts like a deque<scoped_ptr> based on top of std::deque. The
-// ScopedPtrDeque has ownership of all elements in the deque.
-template <typename T>
-class ScopedPtrDeque {
- public:
-  typedef typename std::deque<T*>::const_iterator const_iterator;
-  typedef typename std::deque<T*>::reverse_iterator reverse_iterator;
-  typedef typename std::deque<T*>::const_reverse_iterator
-      const_reverse_iterator;
-
-#if defined(OS_ANDROID)
-  // On Android the iterator is not a class, so we can't block assignment.
-  typedef typename std::deque<T*>::iterator iterator;
-#else
-  // Ban setting values on the iterator directly. New pointers must be passed
-  // to methods on the ScopedPtrDeque class to appear in the deque.
-  class iterator : public std::deque<T*>::iterator {
-   public:
-    iterator(const typename std::deque<T*>::iterator& other)
-        : std::deque<T*>::iterator(other) {}
-    T* const& operator*() { return std::deque<T*>::iterator::operator*(); }
-  };
-#endif
-
-  ScopedPtrDeque() {}
-
-  ~ScopedPtrDeque() { clear(); }
-
-  size_t size() const {
-    return data_.size();
-  }
-
-  T* at(size_t index) const {
-    DCHECK(index < size());
-    return data_[index];
-  }
-
-  T* operator[](size_t index) const {
-    return at(index);
-  }
-
-  T* front() const {
-    DCHECK(!empty());
-    return at(0);
-  }
-
-  T* back() const {
-    DCHECK(!empty());
-    return at(size() - 1);
-  }
-
-  bool empty() const {
-    return data_.empty();
-  }
-
-  scoped_ptr<T> take_front() {
-    scoped_ptr<T> ret(front());
-    data_.pop_front();
-    return ret.Pass();
-  }
-
-  scoped_ptr<T> take_back() {
-    scoped_ptr<T> ret(back());
-    data_.pop_back();
-    return ret.Pass();
-  }
-
-  void clear() {
-    STLDeleteElements(&data_);
-  }
-
-  void push_front(scoped_ptr<T> item) {
-    data_.push_front(item.release());
-  }
-
-  void push_back(scoped_ptr<T> item) {
-    data_.push_back(item.release());
-  }
-
-  void insert(iterator position, scoped_ptr<T> item) {
-    DCHECK(position <= end());
-    data_.insert(position, item.release());
-  }
-
-  scoped_ptr<T> take(iterator position) {
-    DCHECK(position < end());
-    scoped_ptr<T> ret(*position);
-    data_.erase(position);
-    return ret.Pass();
-  }
-
-  void swap(iterator a, iterator b) {
-    DCHECK(a < end());
-    DCHECK(b < end());
-    if (a == end() || b == end() || a == b)
-      return;
-    typename std::deque<T*>::iterator writable_a = a;
-    typename std::deque<T*>::iterator writable_b = b;
-    std::swap(*writable_a, *writable_b);
-  }
-
-  iterator begin() { return static_cast<iterator>(data_.begin()); }
-  const_iterator begin() const { return data_.begin(); }
-  iterator end() { return static_cast<iterator>(data_.end()); }
-  const_iterator end() const { return data_.end(); }
-
-  reverse_iterator rbegin() { return data_.rbegin(); }
-  const_reverse_iterator rbegin() const { return data_.rbegin(); }
-  reverse_iterator rend() { return data_.rend(); }
-  const_reverse_iterator rend() const { return data_.rend(); }
-
- private:
-  std::deque<T*> data_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedPtrDeque);
-};
-
-}  // namespace cc
-
-#endif  // CC_SCOPED_PTR_DEQUE_H_