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