98 lines
2.4 KiB
C++
98 lines
2.4 KiB
C++
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// 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 relation/symmetrical_base.hpp
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/// \brief Base class for symmetrical types
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#ifndef BOOST_BIMAP_RELATION_SYMMETRICAL_BASE_HPP
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#define BOOST_BIMAP_RELATION_SYMMETRICAL_BASE_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/if.hpp>
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#include <boost/type_traits/remove_const.hpp>
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// Boost.Bimap
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#include <boost/bimap/tags/tagged.hpp>
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#include <boost/bimap/tags/support/default_tagged.hpp>
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#include <boost/bimap/relation/member_at.hpp>
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namespace boost {
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namespace bimaps {
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namespace relation {
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/// \brief Base of symetrical tagged types.
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/**
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**/
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template< class TA, class TB, bool force_mutable = false >
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class symmetrical_base
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{
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public:
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typedef BOOST_DEDUCED_TYPENAME tags::support::default_tagged
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<
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TA,
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member_at::left
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>::type tagged_left_type;
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typedef BOOST_DEDUCED_TYPENAME tags::support::default_tagged
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<
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TB,
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member_at::right
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>::type tagged_right_type;
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public:
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//@{
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/// The type stored in the relation
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typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c< force_mutable,
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BOOST_DEDUCED_TYPENAME ::boost::remove_const<
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BOOST_DEDUCED_TYPENAME tagged_left_type::value_type >::type,
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BOOST_DEDUCED_TYPENAME tagged_left_type::value_type
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>::type left_value_type;
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typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c< force_mutable,
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BOOST_DEDUCED_TYPENAME ::boost::remove_const<
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BOOST_DEDUCED_TYPENAME tagged_right_type::value_type >::type,
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BOOST_DEDUCED_TYPENAME tagged_right_type::value_type
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>::type right_value_type;
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//@}
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//@{
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/// The tag of the member. By default it is \c member_at::{side}
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typedef BOOST_DEDUCED_TYPENAME tagged_left_type ::tag left_tag;
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typedef BOOST_DEDUCED_TYPENAME tagged_right_type::tag right_tag;
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//@}
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};
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} // namespace relation
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} // namespace bimaps
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} // namespace boost
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#endif // BOOST_BIMAP_RELATION_SYMMETRICAL_BASE_HPP
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