104 lines
5.6 KiB
C++
104 lines
5.6 KiB
C++
// 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/detail/metadata_access_builder.hpp
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/// \brief Define macros to help building metafunctions
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#ifndef BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCESS_BUILDER_HPP
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#define BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCESS_BUILDER_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/bimap/relation/support/is_tag_of_member_at.hpp>
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#include <boost/bimap/detail/debug/static_error.hpp>
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#include <boost/utility/enable_if.hpp>
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#include <boost/preprocessor/cat.hpp>
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/******************************************************************************
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BIMAP SYMMETRIC METADATA ACCESS INTERFACE
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*******************************************************************************
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template< class Tag, class SymmetricType >
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struct NAME
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{
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typedef -unspecified- type;
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};
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******************************************************************************/
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/*===========================================================================*/
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#define BOOST_BIMAP_SYMMETRIC_METADATA_ACCESS_BUILDER( \
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\
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NAME, \
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METADATA_BY_LEFT, \
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METADATA_BY_RIGHT \
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) \
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\
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template \
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< \
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class Tag, \
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class SymmetricType, \
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class Enable = void \
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> \
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struct NAME \
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{ \
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BOOST_BIMAP_STATIC_ERROR( \
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BOOST_PP_CAT(NAME,_FAILURE), \
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(SymmetricType,Tag) \
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); \
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}; \
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\
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template< class Tag, class SymmetricType > \
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struct NAME \
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< \
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Tag, SymmetricType, \
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BOOST_DEDUCED_TYPENAME enable_if \
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< \
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::boost::bimaps::relation::support::is_tag_of_member_at_left \
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< \
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Tag, \
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SymmetricType \
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> \
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\
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>::type \
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> \
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{ \
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typedef BOOST_DEDUCED_TYPENAME SymmetricType::METADATA_BY_LEFT type; \
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}; \
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\
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template< class Tag, class SymmetricType > \
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struct NAME \
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< \
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Tag, SymmetricType, \
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BOOST_DEDUCED_TYPENAME enable_if \
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< \
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::boost::bimaps::relation::support::is_tag_of_member_at_right \
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< \
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Tag, \
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SymmetricType \
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> \
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\
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>::type \
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> \
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{ \
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typedef BOOST_DEDUCED_TYPENAME SymmetricType::METADATA_BY_RIGHT type; \
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};
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/*===========================================================================*/
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#endif // BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCES_BUILDER_HPP
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