blob: 2a8d9610a69c6f02f894b3bfd9203955a40c5867 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
// 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_VECTOR_H_
#define CC_SCOPED_PTR_VECTOR_H_
#include "base/basictypes.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/stl_util.h"
namespace cc {
// This type acts like a vector<scoped_ptr> based on top of std::vector. The
// ScopedPtrVector has ownership of all elements in the vector.
template <typename T>
class ScopedPtrVector {
public:
typedef typename std::vector<T*>::const_iterator const_iterator;
typedef typename std::vector<T*>::reverse_iterator reverse_iterator;
typedef typename std::vector<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::vector<T*>::iterator iterator;
#else
// Ban setting values on the iterator directly. New pointers must be passed
// to methods on the ScopedPtrVector class to appear in the vector.
class iterator : public std::vector<T*>::iterator {
public:
iterator(const typename std::vector<T*>::iterator& other)
: std::vector<T*>::iterator(other) {}
T* const& operator*() { return std::vector<T*>::iterator::operator*(); }
};
#endif
ScopedPtrVector() {}
~ScopedPtrVector() { 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(iterator position) {
if (position == end())
return scoped_ptr<T>(NULL);
DCHECK(position < end());
typename std::vector<T*>::iterator writable_position = position;
scoped_ptr<T> ret(*writable_position);
*writable_position = NULL;
return ret.Pass();
}
scoped_ptr<T> take_back() {
DCHECK(!empty());
if (empty())
return scoped_ptr<T>(NULL);
return take(end() - 1);
}
void erase(iterator position) {
if (position == end())
return;
typename std::vector<T*>::iterator writable_position = position;
delete *writable_position;
data_.erase(position);
}
void erase(iterator first, iterator last) {
DCHECK(first <= last);
for (iterator it = first; it != last; ++it) {
DCHECK(it < end());
typename std::vector<T*>::iterator writable_it = it;
delete *writable_it;
}
data_.erase(first, last);
}
void reserve(size_t size) {
data_.reserve(size);
}
void clear() {
STLDeleteElements(&data_);
}
void push_back(scoped_ptr<T> item) {
data_.push_back(item.release());
}
void pop_back() {
data_.pop_back();
}
void insert(iterator position, scoped_ptr<T> item) {
DCHECK(position <= end());
data_.insert(position, item.release());
}
void swap(ScopedPtrVector<T>& other) {
data_.swap(other.data_);
}
void swap(iterator a, iterator b) {
DCHECK(a < end());
DCHECK(b < end());
if (a == end() || b == end() || a == b)
return;
typename std::vector<T*>::iterator writable_a = a;
typename std::vector<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::vector<T*> data_;
DISALLOW_COPY_AND_ASSIGN(ScopedPtrVector);
};
} // namespace cc
#endif // CC_SCOPED_PTR_VECTOR_H_
|
