boost/bimap/relation/detail/metadata_access_builder.hpp

   1 // Boost.Bimap
   2 //
   3 // Copyright (c) 2006-2007 Matias Capeletto
   4 //
   5 // Distributed under the Boost Software License, Version 1.0.
   6 // (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 /// \file relation/detail/metadata_access_builder.hpp
  10 /// \brief Define macros to help building metafunctions
  11
  12 #ifndef BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCESS_BUILDER_HPP
  13 #define BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCESS_BUILDER_HPP
  14
  15 #if defined(_MSC_VER) && (_MSC_VER>=1200)
  16 #pragma once
  17 #endif
  18
  19 #include <boost/config.hpp>
  20
  21 #include <boost/bimap/relation/support/is_tag_of_member_at.hpp>
  22 #include <boost/bimap/detail/debug/static_error.hpp>
  23 #include <boost/utility/enable_if.hpp>
  24 #include <boost/preprocessor/cat.hpp>
  25
  26
  27
  28 /******************************************************************************
  29               BIMAP SYMMETRIC METADATA ACCESS INTERFACE
  30 *******************************************************************************
  31
  32 template< class Tag, class SymmetricType >
  33 struct NAME
  34 {
  35     typedef -unspecified- type;
  36 };
  37
  38 ******************************************************************************/
  39
  40
  41 /*===========================================================================*/
  42 #define BOOST_BIMAP_SYMMETRIC_METADATA_ACCESS_BUILDER(                        \
  43                                                                               \
  44         NAME,                                                                 \
  45         METADATA_BY_LEFT,                                                     \
  46         METADATA_BY_RIGHT                                                     \
  47     )                                                                         \
  48                                                                               \
  49     template                                                                  \
  50     <                                                                         \
  51         class Tag,                                                            \
  52         class SymmetricType,                                                  \
  53         class Enable = void                                                   \
  54     >                                                                         \
  55     struct NAME                                                               \
  56     {                                                                         \
  57         BOOST_BIMAP_STATIC_ERROR(                                             \
  58             BOOST_PP_CAT(NAME,_FAILURE),                                      \
  59             (SymmetricType,Tag)                                               \
  60         );                                                                    \
  61     };                                                                        \
  62                                                                               \
  63     template< class Tag, class SymmetricType >                                \
  64     struct NAME                                                               \
  65     <                                                                         \
  66         Tag, SymmetricType,                                                   \
  67         BOOST_DEDUCED_TYPENAME enable_if                                      \
  68         <                                                                     \
  69             ::boost::bimaps::relation::support::is_tag_of_member_at_left      \
  70             <                                                                 \
  71                 Tag,                                                          \
  72                 SymmetricType                                                 \
  73             >                                                                 \
  74                                                                               \
  75         >::type                                                               \
  76     >                                                                         \
  77     {                                                                         \
  78         typedef BOOST_DEDUCED_TYPENAME SymmetricType::METADATA_BY_LEFT type;  \
  79     };                                                                        \
  80                                                                               \
  81     template< class Tag, class SymmetricType >                                \
  82     struct NAME                                                               \
  83     <                                                                         \
  84         Tag, SymmetricType,                                                   \
  85         BOOST_DEDUCED_TYPENAME enable_if                                      \
  86         <                                                                     \
  87             ::boost::bimaps::relation::support::is_tag_of_member_at_right     \
  88             <                                                                 \
  89                 Tag,                                                          \
  90                 SymmetricType                                                 \
  91             >                                                                 \
  92                                                                               \
  93         >::type                                                               \
  94     >                                                                         \
  95     {                                                                         \
  96         typedef BOOST_DEDUCED_TYPENAME SymmetricType::METADATA_BY_RIGHT type; \
  97     };
  98 /*===========================================================================*/
  99
 100
 101 #endif // BOOST_BIMAP_RELATION_DETAIL_METADATA_ACCES_BUILDER_HPP
 102
 103