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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 container_adaptor/detail/comparison_adaptor.hpp | |
10 | /// \brief Comparison adaptor. | |
11 | ||
12 | #ifndef BOOST_BIMAP_CONTAINER_ADAPTOR_DETAIL_COMPARISON_ADAPTOR_HPP | |
13 | #define BOOST_BIMAP_CONTAINER_ADAPTOR_DETAIL_COMPARISON_ADAPTOR_HPP | |
14 | ||
15 | #if defined(_MSC_VER) | |
16 | #pragma once | |
17 | #endif | |
18 | ||
19 | #include <boost/config.hpp> | |
20 | ||
21 | #include <boost/call_traits.hpp> | |
22 | #include <functional> | |
23 | ||
24 | namespace boost { | |
25 | namespace bimaps { | |
26 | namespace container_adaptor { | |
27 | namespace detail { | |
28 | ||
29 | /// \brief Comparison adaptor | |
30 | /** | |
31 | ||
32 | A simple comparison adaptor. | |
33 | **/ | |
34 | ||
35 | template < class Compare, class NewType, class Converter > | |
36 | struct comparison_adaptor : std::binary_function<NewType,NewType,bool> | |
37 | { | |
38 | comparison_adaptor( const Compare & comp, const Converter & conv) | |
39 | : compare(comp), converter(conv) {} | |
40 | ||
41 | bool operator()( BOOST_DEDUCED_TYPENAME call_traits<NewType>::param_type x, | |
42 | BOOST_DEDUCED_TYPENAME call_traits<NewType>::param_type y) const | |
43 | { | |
44 | return compare( converter(x), converter(y) ); | |
45 | } | |
46 | ||
47 | private: | |
48 | Compare compare; | |
49 | Converter converter; | |
50 | }; | |
51 | ||
52 | template < class Compare, class NewType, class Converter > | |
53 | struct compatible_comparison_adaptor : std::binary_function<NewType,NewType,bool> | |
54 | { | |
55 | compatible_comparison_adaptor( const Compare & comp, const Converter & conv) | |
56 | : compare(comp), converter(conv) {} | |
57 | ||
58 | template< class CompatibleTypeLeft, class CompatibleTypeRight > | |
59 | bool operator()( const CompatibleTypeLeft & x, | |
60 | const CompatibleTypeRight & y) const | |
61 | { | |
62 | return compare( converter(x), converter(y) ); | |
63 | } | |
64 | ||
65 | private: | |
66 | Compare compare; | |
67 | Converter converter; | |
68 | }; | |
69 | ||
70 | ||
71 | /// \brief Unary Check adaptor | |
72 | /** | |
73 | ||
74 | A simple unary check adaptor. | |
75 | **/ | |
76 | ||
77 | template < class Compare, class NewType, class Converter > | |
78 | struct unary_check_adaptor : std::unary_function<NewType,bool> | |
79 | { | |
80 | unary_check_adaptor( const Compare & comp, const Converter & conv ) : | |
81 | compare(comp), converter(conv) {} | |
82 | ||
83 | bool operator()( BOOST_DEDUCED_TYPENAME call_traits<NewType>::param_type x) const | |
84 | { | |
85 | return compare( converter(x) ); | |
86 | } | |
87 | ||
88 | private: | |
89 | Compare compare; | |
90 | Converter converter; | |
91 | }; | |
92 | ||
93 | } // namespace detail | |
94 | } // namespace container_adaptor | |
95 | } // namespace bimaps | |
96 | } // namespace boost | |
97 | ||
98 | ||
99 | #endif // BOOST_BIMAP_CONTAINER_ADAPTOR_DETAIL_COMPARISON_ADAPTOR_HPP | |
100 | ||
101 |