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1 | // Boost.Bimap |
2 | // | |
3 | // Copyright (c) 2006-2007 Matias Capeletto | |
4 | // | |
5 | // Distributed under the Boost Software License, Version 1.0. | |
6 | // (See accompanying file LICENSE_1_0.txt or copy at | |
7 | // http://www.boost.org/LICENSE_1_0.txt) | |
8 | ||
9 | /// \file detail/concept_tags.hpp | |
10 | /// \brief Bimap tags and concepts | |
11 | ||
12 | #ifndef BOOST_BIMAP_DETAIL_CONCEPT_TAGS_HPP | |
13 | #define BOOST_BIMAP_DETAIL_CONCEPT_TAGS_HPP | |
14 | ||
15 | #if defined(_MSC_VER) | |
16 | #pragma once | |
17 | #endif | |
18 | ||
19 | #include <boost/config.hpp> | |
20 | ||
21 | #include <boost/mpl/identity.hpp> | |
22 | #include <boost/mpl/placeholders.hpp> | |
23 | #include <boost/mpl/bool.hpp> | |
24 | ||
25 | namespace boost { | |
26 | namespace bimaps { | |
27 | namespace detail { | |
28 | ||
29 | /// \brief Tag of {SetType}_of definition classes | |
30 | /** | |
31 | The {SetType}_of classes are derived from this class so it is easy to construct | |
32 | metafunctions. For example now is easy to create a is_set_type_of metafunction. | |
33 | **/ | |
34 | ||
35 | struct set_type_of_tag {}; | |
36 | ||
37 | /// \brief Tag of {SetType}_of_relation defition classes | |
38 | ||
39 | struct set_type_of_relation_tag {}; | |
40 | ||
41 | /// \brief Tag of {Side}_based identifiers | |
42 | ||
43 | struct side_based_tag : set_type_of_relation_tag {}; | |
44 | ||
45 | } // namespace detail | |
46 | ||
47 | ||
48 | /** \struct boost::bimaps::left_based | |
49 | \brief Tag to indicate that the main view will be based on the left side. | |
50 | ||
51 | This is convenient because the multi-index core will be more efficient. | |
52 | If possible use this options or the right based one. | |
53 | ||
54 | See also right_based. | |
55 | **/ | |
56 | ||
57 | /** \struct boost::bimaps::right_based | |
58 | \brief Tag to indicate that the main view will be based on the right side. | |
59 | ||
60 | This is convenient because the multi-index core will be more efficient. | |
61 | If possible use this options or the right based one. | |
62 | ||
63 | See also left_based. | |
64 | **/ | |
65 | ||
66 | #ifndef BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES | |
67 | ||
68 | struct left_based : ::boost::bimaps::detail::side_based_tag | |
69 | { | |
70 | // I run into troubles if I do not define bind for side based tags. | |
71 | // Maybe a more coherent way of binding the relation can be developped. | |
72 | template< class Relation > struct bind_to { typedef void type; }; | |
73 | ||
74 | typedef mpl::bool_<true> left_mutable_key; | |
75 | typedef mpl::bool_<true> right_mutable_key; | |
76 | }; | |
77 | ||
78 | struct right_based : ::boost::bimaps::detail::side_based_tag | |
79 | { | |
80 | // I run into troubles if I do not define bind for side based tags. | |
81 | // Maybe a more coherent way of binding the relation can be developped. | |
82 | template< class Relation > struct bind_to { typedef void type; }; | |
83 | ||
84 | typedef mpl::bool_<true> left_mutable_key; | |
85 | typedef mpl::bool_<true> right_mutable_key; | |
86 | }; | |
87 | ||
88 | #endif // BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES | |
89 | ||
90 | typedef mpl::_ _relation; | |
91 | ||
92 | } // namespace bimaps | |
93 | } // namespace boost | |
94 | ||
95 | ||
96 | #endif // BOOST_BIMAP_DETAIL_CONCEPT_TAGS_HPP | |
97 |