Chris@101: /* Copyright 2003-2013 Joaquin M Lopez Munoz.
Chris@16:  * Distributed under the Boost Software License, Version 1.0.
Chris@16:  * (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:  * http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  *
Chris@16:  * See http://www.boost.org/libs/multi_index for library home page.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_MULTI_INDEX_INDEXED_BY_HPP
Chris@16: #define BOOST_MULTI_INDEX_INDEXED_BY_HPP
Chris@16: 
Chris@101: #if defined(_MSC_VER)
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
Chris@16: #include <boost/mpl/vector.hpp>
Chris@16: #include <boost/preprocessor/cat.hpp>
Chris@16: #include <boost/preprocessor/control/expr_if.hpp>
Chris@16: #include <boost/preprocessor/repetition/enum.hpp>
Chris@16: #include <boost/preprocessor/repetition/enum_params.hpp> 
Chris@16: 
Chris@16: /* An alias to mpl::vector used to hide MPL from the user.
Chris@16:  * indexed_by contains the index specifiers for instantiation
Chris@16:  * of a multi_index_container.
Chris@16:  */
Chris@16: 
Chris@16: /* This user_definable macro limits the number of elements of an index list;
Chris@16:  * useful for shortening resulting symbol names (MSVC++ 6.0, for instance,
Chris@16:  * has problems coping with very long symbol names.)
Chris@16:  */
Chris@16: 
Chris@16: #if !defined(BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE)
Chris@16: #define BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE BOOST_MPL_LIMIT_VECTOR_SIZE
Chris@16: #endif
Chris@16: 
Chris@16: #if BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE<BOOST_MPL_LIMIT_VECTOR_SIZE
Chris@16: #define BOOST_MULTI_INDEX_INDEXED_BY_SIZE \
Chris@16:   BOOST_MULTI_INDEX_LIMIT_INDEXED_BY_SIZE
Chris@16: #else
Chris@16: #define BOOST_MULTI_INDEX_INDEXED_BY_SIZE BOOST_MPL_LIMIT_VECTOR_SIZE
Chris@16: #endif
Chris@16: 
Chris@16: #define BOOST_MULTI_INDEX_INDEXED_BY_TEMPLATE_PARM(z,n,var) \
Chris@16:   typename BOOST_PP_CAT(var,n) BOOST_PP_EXPR_IF(n,=mpl::na)
Chris@16: 
Chris@16: namespace boost{
Chris@16: 
Chris@16: namespace multi_index{
Chris@16: 
Chris@16: template<
Chris@16:   BOOST_PP_ENUM(
Chris@16:     BOOST_MULTI_INDEX_INDEXED_BY_SIZE,
Chris@16:     BOOST_MULTI_INDEX_INDEXED_BY_TEMPLATE_PARM,T)
Chris@16: >
Chris@16: struct indexed_by:
Chris@16:   mpl::vector<BOOST_PP_ENUM_PARAMS(BOOST_MULTI_INDEX_INDEXED_BY_SIZE,T)>
Chris@16: {
Chris@16: };
Chris@16: 
Chris@16: } /* namespace multi_index */
Chris@16: 
Chris@16: } /* namespace boost */
Chris@16: 
Chris@16: #undef BOOST_MULTI_INDEX_INDEXED_BY_TEMPLATE_PARM
Chris@16: #undef BOOST_MULTI_INDEX_INDEXED_BY_SIZE
Chris@16: 
Chris@16: #endif