williamr@2: /* Copyright 2003-2005 Joaquín M López Muñoz. williamr@2: * Distributed under the Boost Software License, Version 1.0. williamr@2: * (See accompanying file LICENSE_1_0.txt or copy at williamr@2: * http://www.boost.org/LICENSE_1_0.txt) williamr@2: * williamr@2: * See http://www.boost.org/libs/multi_index for library home page. williamr@2: */ williamr@2: williamr@2: #ifndef BOOST_MULTI_INDEX_INDEXED_BY_HPP williamr@2: #define BOOST_MULTI_INDEX_INDEXED_BY_HPP williamr@2: williamr@2: #if defined(_MSC_VER)&&(_MSC_VER>=1200) williamr@2: #pragma once williamr@2: #endif williamr@2: williamr@2: #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */ williamr@2: #include <boost/mpl/vector.hpp> williamr@2: #include <boost/preprocessor/cat.hpp> williamr@2: #include <boost/preprocessor/control/expr_if.hpp> williamr@2: #include <boost/preprocessor/repetition/enum.hpp> williamr@2: #include <boost/preprocessor/repetition/enum_params.hpp> williamr@2: williamr@2: /* An alias to mpl::vector used to hide MPL from the user. williamr@2: * indexed_by contains the index specifiers for instantiation williamr@2: * of a multi_index_container. williamr@2: */ williamr@2: williamr@2: /* This user_definable macro limits the number of elements of an index list; williamr@2: * useful for shortening resulting symbol names (MSVC++ 6.0, for instance, williamr@2: * has problems coping with very long symbol names.) williamr@2: */ williamr@2: williamr@2: #if !defined(BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE) williamr@2: #if defined(BOOST_MSVC)&&(BOOST_MSVC<1300) williamr@2: #define BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE 5 williamr@2: #else williamr@2: #define BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE BOOST_MPL_LIMIT_VECTOR_SIZE williamr@2: #endif williamr@2: #endif williamr@2: williamr@2: #if BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE<BOOST_MPL_LIMIT_VECTOR_SIZE williamr@2: #define BOOST_MULTI_INDEX_INDEXED_BY_SIZE \ williamr@2: BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE williamr@2: #else williamr@2: #define BOOST_MULTI_INDEX_INDEXED_BY_SIZE BOOST_MPL_LIMIT_VECTOR_SIZE williamr@2: #endif williamr@2: williamr@2: #define BOOST_MULTI_INDEX_INDEXED_BY_TEMPLATE_PARM(z,n,var) \ williamr@2: typename BOOST_PP_CAT(var,n) BOOST_PP_EXPR_IF(n,=mpl::na) williamr@2: williamr@2: namespace boost{ williamr@2: williamr@2: namespace multi_index{ williamr@2: williamr@2: template< williamr@2: BOOST_PP_ENUM( williamr@2: BOOST_MULTI_INDEX_INDEXED_BY_SIZE, williamr@2: BOOST_MULTI_INDEX_INDEXED_BY_TEMPLATE_PARM,T) williamr@2: > williamr@2: struct indexed_by: williamr@2: mpl::vector<BOOST_PP_ENUM_PARAMS(BOOST_MULTI_INDEX_INDEXED_BY_SIZE,T)> williamr@2: { williamr@2: }; williamr@2: williamr@2: } /* namespace multi_index */ williamr@2: williamr@2: } /* namespace boost */ williamr@2: williamr@2: #undef BOOST_MULTI_INDEX_INDEXED_BY_TEMPLATE_PARM williamr@2: #undef BOOST_MULTI_INDEX_INDEXED_BY_SIZE williamr@2: williamr@2: #endif