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1 | // Boost.Geometry Index |
2 | // | |
3 | // Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland. | |
4 | // | |
5 | // Use, modification and distribution is subject to the Boost Software License, | |
6 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
7 | // http://www.boost.org/LICENSE_1_0.txt) | |
8 | ||
9 | #ifndef BOOST_GEOMETRY_INDEX_DETAIL_TRANSLATOR_HPP | |
10 | #define BOOST_GEOMETRY_INDEX_DETAIL_TRANSLATOR_HPP | |
11 | ||
12 | namespace boost { namespace geometry { namespace index { | |
13 | ||
14 | namespace detail { | |
15 | ||
16 | template <typename IndexableGetter, typename EqualTo> | |
17 | struct translator | |
18 | : public IndexableGetter | |
19 | , public EqualTo | |
20 | { | |
21 | typedef typename IndexableGetter::result_type result_type; | |
22 | ||
23 | translator(IndexableGetter const& i, EqualTo const& e) | |
24 | : IndexableGetter(i), EqualTo(e) | |
25 | {} | |
26 | ||
27 | template <typename Value> | |
28 | result_type operator()(Value const& value) const | |
29 | { | |
30 | return IndexableGetter::operator()(value); | |
31 | } | |
32 | ||
33 | template <typename Value> | |
34 | bool equals(Value const& v1, Value const& v2) const | |
35 | { | |
36 | return EqualTo::operator()(v1, v2); | |
37 | } | |
38 | }; | |
39 | ||
40 | template <typename IndexableGetter> | |
41 | struct result_type | |
42 | { | |
43 | typedef typename IndexableGetter::result_type type; | |
44 | }; | |
45 | ||
46 | template <typename IndexableGetter> | |
47 | struct indexable_type | |
48 | { | |
49 | typedef typename boost::remove_const< | |
50 | typename boost::remove_reference< | |
51 | typename result_type<IndexableGetter>::type | |
52 | >::type | |
53 | >::type type; | |
54 | }; | |
55 | ||
56 | } // namespace detail | |
57 | ||
58 | }}} // namespace boost::geometry::index | |
59 | ||
60 | #endif // BOOST_GEOMETRY_INDEX_DETAIL_TRANSLATOR_HPP |