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// Boost.Bimap
//
// Copyright (c) 2006-2007 Matias Capeletto
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
/// \file relation/symmetrical_base.hpp
/// \brief Base class for symmetrical types
#ifndef BOOST_BIMAP_RELATION_SYMMETRICAL_BASE_HPP
#define BOOST_BIMAP_RELATION_SYMMETRICAL_BASE_HPP
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/config.hpp>
#include <boost/mpl/if.hpp>
#include <boost/type_traits/remove_const.hpp>
// Boost.Bimap
#include <boost/bimap/tags/tagged.hpp>
#include <boost/bimap/tags/support/default_tagged.hpp>
#include <boost/bimap/relation/member_at.hpp>
namespace boost {
namespace bimaps {
namespace relation {
/// \brief Base of symetrical tagged types.
/**
**/
template< class TA, class TB, bool force_mutable = false >
class symmetrical_base
{
public:
typedef BOOST_DEDUCED_TYPENAME tags::support::default_tagged
<
TA,
member_at::left
>::type tagged_left_type;
typedef BOOST_DEDUCED_TYPENAME tags::support::default_tagged
<
TB,
member_at::right
>::type tagged_right_type;
public:
//@{
/// The type stored in the relation
typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c< force_mutable,
BOOST_DEDUCED_TYPENAME ::boost::remove_const<
BOOST_DEDUCED_TYPENAME tagged_left_type::value_type >::type,
BOOST_DEDUCED_TYPENAME tagged_left_type::value_type
>::type left_value_type;
typedef BOOST_DEDUCED_TYPENAME ::boost::mpl::if_c< force_mutable,
BOOST_DEDUCED_TYPENAME ::boost::remove_const<
BOOST_DEDUCED_TYPENAME tagged_right_type::value_type >::type,
BOOST_DEDUCED_TYPENAME tagged_right_type::value_type
>::type right_value_type;
//@}
//@{
/// The tag of the member. By default it is \c member_at::{side}
typedef BOOST_DEDUCED_TYPENAME tagged_left_type ::tag left_tag;
typedef BOOST_DEDUCED_TYPENAME tagged_right_type::tag right_tag;
//@}
};
} // namespace relation
} // namespace bimaps
} // namespace boost
#endif // BOOST_BIMAP_RELATION_SYMMETRICAL_BASE_HPP
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