blob: 7caa9bfa9f836ad60fd280f801c6d678ed8317e6 (
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
|
/* This file is part of the libdepixelize project
Copyright (C) 2013 Vinícius dos Santos Oliveira <vini.ipsmaker@gmail.com>
GNU Lesser General Public License Usage
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
GNU General Public License Usage
Alternatively, this library may be used under the terms of the GNU General
Public License as published by the Free Software Foundation, either version
2 of the License, or (at your option) any later version.
You should have received a copy of the GNU General Public License along with
this library. If not, see <http://www.gnu.org/licenses/>.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
*/
#ifndef LIBDEPIXELIZE_TRACER_ITERATOR_H
#define LIBDEPIXELIZE_TRACER_ITERATOR_H
#include <vector>
#include <iterator>
namespace Tracer {
template<typename T>
const T *to_ptr(typename std::vector<T>::const_iterator it)
{
return &*it;
}
template<typename T>
T *to_ptr(typename std::vector<T>::iterator it)
{
return &*it;
}
template<typename T>
typename std::vector<T>::const_iterator to_iterator(T const *ptr,
typename std::vector<T>
::const_iterator begin)
{
typedef typename std::vector<T>::const_iterator It;
typedef typename std::iterator_traits<It>::difference_type difference_type;
difference_type idx = ptr - to_ptr<T>(begin);
return begin + idx;
}
template<typename T>
typename std::vector<T>::iterator to_iterator(T *ptr,
typename std::vector<T>::iterator
begin)
{
typedef typename std::vector<T>::iterator It;
typedef typename std::iterator_traits<It>::difference_type difference_type;
difference_type idx = ptr - to_ptr<T>(begin);
return begin + idx;
}
template<typename T>
class ToIter
{
public:
typedef typename std::vector<T>::const_iterator const_iterator;
typedef typename std::vector<T>::iterator iterator;
ToIter(const_iterator begin) :
begin(begin)
{}
const_iterator operator()(T const *ptr) const
{
return to_iterator<T>(ptr, begin);
}
iterator operator()(T *ptr) const
{
return to_iterator<T>(ptr, begin);
}
private:
typename std::vector<T>::const_iterator begin;
};
template<typename T>
class ToPtr
{
public:
typedef typename std::vector<T>::const_iterator const_iterator;
typedef typename std::vector<T>::iterator iterator;
const T *operator()(const_iterator it) const
{
return to_ptr<T>(it);
}
T *operator()(iterator it) const
{
return to_ptr<T>(it);
}
};
} // namespace Tracer
#endif // LIBDEPIXELIZE_TRACER_ITERATOR_H
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
|
