relation/detail/metadata_access_builder.hpp

0001 // Boost.Bimap
0002 //
0003 // Copyright (c) 2006-2007 Matias Capeletto
0004 //
0005 // Distributed under the Boost Software License, Version 1.0.
0006 // (See accompanying file LICENSE_1_0.txt or copy at
0007 // http://www.boost.org/LICENSE_1_0.txt)
0008
0009 /// \file relation/detail/metadata_access_builder.hpp
0010 /// \brief Define macros to help building metafunctions
0011
0012 #ifndef BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCESS_BUILDER_HPP
0013 #define BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCESS_BUILDER_HPP
0014
0015 #if defined(_MSC_VER)
0016 #pragma once
0017 #endif
0018
0019 #include <boost/config.hpp>
0020
0021 #include <boost/bimap/relation/support/is_tag_of_member_at.hpp>
0022 #include <boost/bimap/detail/debug/static_error.hpp>
0023 #include <boost/core/enable_if.hpp>
0024 #include <boost/preprocessor/cat.hpp>
0025
0026
0027
0028 /******************************************************************************
0029               BIMAP SYMMETRIC METADATA ACCESS INTERFACE
0030 *******************************************************************************
0031
0032 template< class Tag, class SymmetricType >
0033 struct NAME
0034 {
0035     typedef -unspecified- type;
0036 };
0037
0038 ******************************************************************************/
0039
0040
0041 /*===========================================================================*/
0042 #define BOOST_BIMAP_SYMMETRIC_METADATA_ACCESS_BUILDER(                        \
0043                                                                               \
0044         NAME,                                                                 \
0045         METADATA_BY_LEFT,                                                     \
0046         METADATA_BY_RIGHT                                                     \
0047     )                                                                         \
0048                                                                               \
0049     template                                                                  \
0050     <                                                                         \
0051         class Tag,                                                            \
0052         class SymmetricType,                                                  \
0053         class Enable = void                                                   \
0054     >                                                                         \
0055     struct NAME                                                               \
0056     {                                                                         \
0057         BOOST_BIMAP_STATIC_ERROR(                                             \
0058             BOOST_PP_CAT(NAME,_FAILURE),                                      \
0059             (SymmetricType,Tag)                                               \
0060         );                                                                    \
0061     };                                                                        \
0062                                                                               \
0063     template< class Tag, class SymmetricType >                                \
0064     struct NAME                                                               \
0065     <                                                                         \
0066         Tag, SymmetricType,                                                   \
0067         BOOST_DEDUCED_TYPENAME enable_if                                      \
0068         <                                                                     \
0069             ::boost::bimaps::relation::support::is_tag_of_member_at_left      \
0070             <                                                                 \
0071                 Tag,                                                          \
0072                 SymmetricType                                                 \
0073             >                                                                 \
0074                                                                               \
0075         >::type                                                               \
0076     >                                                                         \
0077     {                                                                         \
0078         typedef BOOST_DEDUCED_TYPENAME SymmetricType::METADATA_BY_LEFT type;  \
0079     };                                                                        \
0080                                                                               \
0081     template< class Tag, class SymmetricType >                                \
0082     struct NAME                                                               \
0083     <                                                                         \
0084         Tag, SymmetricType,                                                   \
0085         BOOST_DEDUCED_TYPENAME enable_if                                      \
0086         <                                                                     \
0087             ::boost::bimaps::relation::support::is_tag_of_member_at_right     \
0088             <                                                                 \
0089                 Tag,                                                          \
0090                 SymmetricType                                                 \
0091             >                                                                 \
0092                                                                               \
0093         >::type                                                               \
0094     >                                                                         \
0095     {                                                                         \
0096         typedef BOOST_DEDUCED_TYPENAME SymmetricType::METADATA_BY_RIGHT type; \
0097     };
0098 /*===========================================================================*/
0099
0100
0101 #endif // BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCES_BUILDER_HPP
0102
0103