// Boost.Bimap
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//
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// Copyright (c) 2006-2007 Matias Capeletto
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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/// \file detail/concept_tags.hpp
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/// \brief Bimap tags and concepts
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#ifndef BOOST_BIMAP_DETAIL_CONCEPT_TAGS_HPP
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#define BOOST_BIMAP_DETAIL_CONCEPT_TAGS_HPP
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/config.hpp>
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#include <boost/mpl/identity.hpp>
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#include <boost/mpl/placeholders.hpp>
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#include <boost/mpl/bool.hpp>
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namespace boost {
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namespace bimaps {
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namespace detail {
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/// \brief Tag of {SetType}_of definition classes
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/**
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The {SetType}_of classes are derived from this class so it is easy to construct
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metafunctions. For example now is easy to create a is_set_type_of metafunction.
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**/
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struct set_type_of_tag {};
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/// \brief Tag of {SetType}_of_relation definition classes
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struct set_type_of_relation_tag {};
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/// \brief Tag of {Side}_based identifiers
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struct side_based_tag : set_type_of_relation_tag {};
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} // namespace detail
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/** \struct boost::bimaps::left_based
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\brief Tag to indicate that the main view will be based on the left side.
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This is convenient because the multi-index core will be more efficient.
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If possible use this options or the right based one.
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See also right_based.
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**/
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/** \struct boost::bimaps::right_based
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\brief Tag to indicate that the main view will be based on the right side.
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This is convenient because the multi-index core will be more efficient.
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If possible use this options or the right based one.
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See also left_based.
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**/
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#ifndef BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
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struct left_based : ::boost::bimaps::detail::side_based_tag
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{
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// I run into troubles if I do not define bind for side based tags.
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// Maybe a more coherent way of binding the relation can be developed.
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template< class Relation > struct bind_to { typedef void type; };
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typedef mpl::bool_<true> left_mutable_key;
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typedef mpl::bool_<true> right_mutable_key;
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};
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struct right_based : ::boost::bimaps::detail::side_based_tag
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{
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// I run into troubles if I do not define bind for side based tags.
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// Maybe a more coherent way of binding the relation can be developed.
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template< class Relation > struct bind_to { typedef void type; };
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typedef mpl::bool_<true> left_mutable_key;
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typedef mpl::bool_<true> right_mutable_key;
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};
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#endif // BOOST_BIMAP_DOXYGEN_WILL_NOT_PROCESS_THE_FOLLOWING_LINES
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typedef mpl::_ _relation;
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} // namespace bimaps
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} // namespace boost
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#endif // BOOST_BIMAP_DETAIL_CONCEPT_TAGS_HPP
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