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