blob: 9077f8fa00ed894c6944ff163ff1d7a09c084f40 (
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
|
/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
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)
==============================================================================*/
#if !defined(FUSION_ITERATOR_ADAPTER_08112011_0942)
#define FUSION_ITERATOR_ADAPTER_08112011_0942
#include <boost/fusion/iterator/detail/advance.hpp>
#include <boost/fusion/iterator/iterator_facade.hpp>
#include <boost/type_traits/remove_const.hpp>
namespace boost { namespace fusion
{
template <typename Derived_, typename Iterator_,
typename Category = typename Iterator_::category>
struct iterator_adapter
: iterator_facade<Derived_, Category>
{
typedef typename
remove_const<Iterator_>::type
iterator_base_type;
iterator_base_type iterator_base;
iterator_adapter(iterator_base_type const& iterator_base_)
: iterator_base(iterator_base_) {}
// default implementation
template <typename I1, typename I2>
struct equal_to
: result_of::equal_to<
typename I1::iterator_base_type
, typename I2::iterator_base_type
>
{};
// default implementation
template <typename Iterator, typename N>
struct advance
{
typedef typename Derived_::template make<
typename result_of::advance<
typename Iterator::iterator_base_type, N
>::type>::type
type;
static type
call(Iterator const& it)
{
return type(fusion::advance<N>(it.iterator_base));
}
};
// default implementation
template <typename First, typename Last>
struct distance
: result_of::distance<
typename First::iterator_base_type
, typename Last::iterator_base_type
>
{};
// default implementation
template <typename Iterator>
struct value_of
: result_of::value_of<
typename Iterator::iterator_base_type
>
{};
// default implementation
template <typename Iterator>
struct deref
{
typedef typename
result_of::deref<
typename Iterator::iterator_base_type
>::type
type;
static type
call(Iterator const& it)
{
return fusion::deref(it.iterator_base);
}
};
// default implementation
template <typename Iterator>
struct next
{
typedef typename Derived_::template make<
typename result_of::next<
typename Iterator::iterator_base_type
>::type>::type
type;
static type
call(Iterator const& i)
{
return type(fusion::next(i.iterator_base));
}
};
// default implementation
template <typename Iterator>
struct prior
{
typedef typename Derived_::template make<
typename result_of::prior<
typename Iterator::iterator_base_type
>::type>::type
type;
static type
call(Iterator const& i)
{
return type(fusion::prior(i.iterator_base));
}
};
};
}}
#endif
|