blob: 5fb6a78b4428835f5b39f1c8ef14c0786ee899f7 (
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
|
// (C) Copyright Jeremy Siek 2002.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <boost/iterator/iterator_concepts.hpp>
#include <boost/iterator/iterator_categories.hpp>
#include <boost/operators.hpp>
#include <iterator>
#include <cstddef>
struct new_random_access
: std::random_access_iterator_tag
, boost::random_access_traversal_tag
{};
struct new_iterator
{
typedef new_random_access iterator_category;
typedef int value_type;
typedef std::ptrdiff_t difference_type;
typedef int* pointer;
typedef int& reference;
int& operator*() const { return *m_x; }
new_iterator& operator++() { return *this; }
new_iterator operator++(int) { return *this; }
new_iterator& operator--() { return *this; }
new_iterator operator--(int) { return *this; }
new_iterator& operator+=(std::ptrdiff_t) { return *this; }
new_iterator operator+(std::ptrdiff_t) { return *this; }
new_iterator& operator-=(std::ptrdiff_t) { return *this; }
std::ptrdiff_t operator-(const new_iterator&) const { return 0; }
new_iterator operator-(std::ptrdiff_t) const { return *this; }
bool operator==(const new_iterator&) const { return false; }
bool operator!=(const new_iterator&) const { return false; }
bool operator<(const new_iterator&) const { return false; }
int* m_x;
};
new_iterator operator+(std::ptrdiff_t, new_iterator x) { return x; }
struct old_iterator
{
typedef std::random_access_iterator_tag iterator_category;
typedef int value_type;
typedef std::ptrdiff_t difference_type;
typedef int* pointer;
typedef int& reference;
int& operator*() const { return *m_x; }
old_iterator& operator++() { return *this; }
old_iterator operator++(int) { return *this; }
old_iterator& operator--() { return *this; }
old_iterator operator--(int) { return *this; }
old_iterator& operator+=(std::ptrdiff_t) { return *this; }
old_iterator operator+(std::ptrdiff_t) { return *this; }
old_iterator& operator-=(std::ptrdiff_t) { return *this; }
old_iterator operator-(std::ptrdiff_t) const { return *this; }
std::ptrdiff_t operator-(const old_iterator&) const { return 0; }
bool operator==(const old_iterator&) const { return false; }
bool operator!=(const old_iterator&) const { return false; }
bool operator<(const old_iterator&) const { return false; }
int* m_x;
};
old_iterator operator+(std::ptrdiff_t, old_iterator x) { return x; }
int
main()
{
boost::iterator_traversal<new_iterator>::type tc;
boost::random_access_traversal_tag derived = tc;
(void)derived;
boost::function_requires<
boost_concepts::WritableIteratorConcept<int*> >();
boost::function_requires<
boost_concepts::LvalueIteratorConcept<int*> >();
boost::function_requires<
boost_concepts::RandomAccessTraversalConcept<int*> >();
boost::function_requires<
boost_concepts::ReadableIteratorConcept<const int*> >();
boost::function_requires<
boost_concepts::LvalueIteratorConcept<const int*> >();
boost::function_requires<
boost_concepts::RandomAccessTraversalConcept<const int*> >();
boost::function_requires<
boost_concepts::WritableIteratorConcept<new_iterator> >();
boost::function_requires<
boost_concepts::LvalueIteratorConcept<new_iterator> >();
boost::function_requires<
boost_concepts::RandomAccessTraversalConcept<new_iterator> >();
boost::function_requires<
boost_concepts::WritableIteratorConcept<old_iterator> >();
boost::function_requires<
boost_concepts::LvalueIteratorConcept<old_iterator> >();
boost::function_requires<
boost_concepts::RandomAccessTraversalConcept<old_iterator> >();
boost::function_requires<
boost_concepts::InteroperableIteratorConcept<int*, int const*> >();
return 0;
}
|
