1 | /*=============================================================================
|
---|
2 | Copyright (c) 2003 Joel de Guzman
|
---|
3 |
|
---|
4 | Use, modification and distribution is subject to the Boost Software
|
---|
5 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
---|
6 | http://www.boost.org/LICENSE_1_0.txt)
|
---|
7 | ==============================================================================*/
|
---|
8 | #if !defined(FUSION_SEQUENCE_DETAIL_TRANSFORM_VIEW_BEGIN_END_TRAITS_HPP)
|
---|
9 | #define FUSION_SEQUENCE_DETAIL_TRANSFORM_VIEW_BEGIN_END_TRAITS_HPP
|
---|
10 |
|
---|
11 | #include <boost/spirit/fusion/detail/config.hpp>
|
---|
12 |
|
---|
13 | namespace boost { namespace fusion
|
---|
14 | {
|
---|
15 | struct transform_view_tag;
|
---|
16 |
|
---|
17 | template <typename Sequence, typename F>
|
---|
18 | struct transform_view;
|
---|
19 |
|
---|
20 | template <typename First, typename F>
|
---|
21 | struct transform_view_iterator;
|
---|
22 |
|
---|
23 | namespace meta
|
---|
24 | {
|
---|
25 | template <typename Tag>
|
---|
26 | struct begin_impl;
|
---|
27 |
|
---|
28 | template <>
|
---|
29 | struct begin_impl<transform_view_tag>
|
---|
30 | {
|
---|
31 | template <typename Sequence>
|
---|
32 | struct apply
|
---|
33 | {
|
---|
34 | typedef typename Sequence::first_type first_type;
|
---|
35 | typedef typename Sequence::transform_type transform_type;
|
---|
36 | typedef transform_view_iterator<first_type, transform_type> type;
|
---|
37 |
|
---|
38 | static type
|
---|
39 | call(Sequence& s)
|
---|
40 | {
|
---|
41 | return type(s.first, s.f);
|
---|
42 | }
|
---|
43 | };
|
---|
44 | };
|
---|
45 |
|
---|
46 | template <typename Tag>
|
---|
47 | struct end_impl;
|
---|
48 |
|
---|
49 | template <>
|
---|
50 | struct end_impl<transform_view_tag>
|
---|
51 | {
|
---|
52 | template <typename Sequence>
|
---|
53 | struct apply
|
---|
54 | {
|
---|
55 | typedef typename Sequence::last_type last_type;
|
---|
56 | typedef typename Sequence::transform_type transform_type;
|
---|
57 | typedef transform_view_iterator<last_type, transform_type> type;
|
---|
58 |
|
---|
59 | static type
|
---|
60 | call(Sequence& s)
|
---|
61 | {
|
---|
62 | return type(s.last, s.f);
|
---|
63 | }
|
---|
64 | };
|
---|
65 | };
|
---|
66 | }
|
---|
67 | }}
|
---|
68 |
|
---|
69 | namespace boost { namespace mpl
|
---|
70 | {
|
---|
71 | template <typename Tag>
|
---|
72 | struct begin_impl;
|
---|
73 |
|
---|
74 | template <typename Tag>
|
---|
75 | struct end_impl;
|
---|
76 |
|
---|
77 | template <>
|
---|
78 | struct begin_impl<fusion::transform_view_tag>
|
---|
79 | : fusion::meta::begin_impl<fusion::transform_view_tag> {};
|
---|
80 |
|
---|
81 | template <>
|
---|
82 | struct end_impl<fusion::transform_view_tag>
|
---|
83 | : fusion::meta::end_impl<fusion::transform_view_tag> {};
|
---|
84 | }}
|
---|
85 |
|
---|
86 | #endif
|
---|
87 |
|
---|
88 |
|
---|