summaryrefslogtreecommitdiffstats
blob: a7901fcad50f853390aaf0b1ae313d6959341cda (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
/*=============================================================================
    Copyright (c) 2001-2011 Joel de Guzman
    Copyright (c) 2005-2006 Dan Marsden
    Copyright (c) 2009-2010 Christopher Schmidt

    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)
==============================================================================*/

#ifndef BOOST_FUSION_ADAPTED_STRUCT_DETAIL_BEGIN_IMPL_HPP
#define BOOST_FUSION_ADAPTED_STRUCT_DETAIL_BEGIN_IMPL_HPP

#include <boost/fusion/iterator/basic_iterator.hpp>

namespace boost { namespace fusion { namespace extension
{
    template<typename>
    struct begin_impl;

    template <>
    struct begin_impl<struct_tag>
    {
        template <typename Seq>
        struct apply
        {
            typedef
                basic_iterator<
                    struct_iterator_tag
                  , random_access_traversal_tag
                  , Seq
                  , 0
                >
            type;

            static type
            call(Seq& seq)
            {
                return type(seq,0);
            }
        };
    };

    template <>
    struct begin_impl<assoc_struct_tag>
    {
        template <typename Seq>
        struct apply
        {
            typedef
                basic_iterator<
                    struct_iterator_tag
                  , assoc_struct_category
                  , Seq
                  , 0
                >
            type;

            static type
            call(Seq& seq)
            {
                return type(seq,0);
            }
        };
    };
}}}

#endif