blob: 72b241ea2b713a47049d0baa1b3328e48e7844bc (
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
|
/* A "next" iterator for GDB, the GNU debugger.
Copyright (C) 2019-2021 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef COMMON_NEXT_ITERATOR_H
#define COMMON_NEXT_ITERATOR_H
#include "gdbsupport/iterator-range.h"
/* An iterator that uses the 'next' field of a type to iterate. This
can be used with various GDB types that are stored as linked
lists. */
template<typename T>
struct next_iterator
{
typedef next_iterator self_type;
typedef T *value_type;
typedef T *&reference;
typedef T **pointer;
typedef std::forward_iterator_tag iterator_category;
typedef int difference_type;
explicit next_iterator (T *item)
: m_item (item)
{
}
/* Create a one-past-the-end iterator. */
next_iterator ()
: m_item (nullptr)
{
}
value_type operator* () const
{
return m_item;
}
bool operator== (const self_type &other) const
{
return m_item == other.m_item;
}
bool operator!= (const self_type &other) const
{
return m_item != other.m_item;
}
self_type &operator++ ()
{
m_item = m_item->next;
return *this;
}
private:
T *m_item;
};
/* A convenience wrapper to make a range type around a next_iterator. */
template <typename T>
using next_range = iterator_range<next_iterator<T>>;
#endif /* COMMON_NEXT_ITERATOR_H */
|
