| 1 | // Boost.Bimap |
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| 2 | // |
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| 3 | // Copyright (c) 2006-2007 Matias Capeletto |
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| 4 | // |
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| 5 | // Distributed under the Boost Software License, Version 1.0. |
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| 6 | // (See accompanying file LICENSE_1_0.txt or copy at |
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| 7 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 8 | |
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| 9 | /// \file support/map_type_by.hpp |
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| 10 | /// \brief Metafunction to access the map view types of a bimap |
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| 11 | |
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| 12 | #ifndef BOOST_BIMAP_SUPPORT_MAP_TYPE_BY_HPP |
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| 13 | #define BOOST_BIMAP_SUPPORT_MAP_TYPE_BY_HPP |
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| 14 | |
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| 15 | #if defined(_MSC_VER) |
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| 16 | #pragma once |
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| 17 | #endif |
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| 18 | |
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| 19 | #include <boost/config.hpp> |
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| 20 | |
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| 21 | #include <boost/bimap/relation/detail/metadata_access_builder.hpp> |
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| 22 | |
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| 23 | /** \struct boost::bimaps::support::map_type_by |
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| 24 | |
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| 25 | \brief Metafunction to obtain the map view type of a bimap indexed by one of the sides. |
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| 26 | |
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| 27 | The tag parameter can be either a user defined tag or \c member_at::{side}. |
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| 28 | The returned type is signature-compatible with std::pair. |
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| 29 | |
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| 30 | \code |
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| 31 | |
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| 32 | template< class Tag, class Bimap > |
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| 33 | struct map_type_by |
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| 34 | { |
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| 35 | typedef typename Bimap::{side}_map_type type; |
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| 36 | }; |
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| 37 | |
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| 38 | \endcode |
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| 39 | |
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| 40 | See also member_at. |
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| 41 | \ingroup bimap_group |
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| 42 | **/ |
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| 43 | |
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| 44 | namespace boost { |
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| 45 | namespace bimaps { |
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| 46 | namespace support { |
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| 47 | |
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| 48 | // Implementation of map type by metafunction |
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| 49 | |
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| 50 | BOOST_BIMAP_SYMMETRIC_METADATA_ACCESS_BUILDER |
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| 51 | ( |
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| 52 | map_type_by, |
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| 53 | left_map, |
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| 54 | right_map |
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| 55 | ) |
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| 56 | |
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| 57 | |
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| 58 | |
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| 59 | } // namespace support |
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| 60 | } // namespace bimaps |
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| 61 | } // namespace boost |
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| 62 | |
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| 63 | |
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| 64 | #endif // BOOST_BIMAP_SUPPORT_MAP_TYPE_BY_HPP |
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| 65 | |
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| 66 | |
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