2010-07-26 17:06:36 +00:00
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#ifndef BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
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#define BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
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// Copyright Eric Friedman 2003
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// Copyright Aleksey Gurtovoy 2004
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//
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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/mpl for documentation.
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// $Id: partition_op.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
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// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
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// $Revision: 49267 $
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#include <boost/mpl/apply.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/pair.hpp>
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#include <boost/mpl/aux_/lambda_spec.hpp>
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namespace boost { namespace mpl {
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namespace aux {
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template< typename Pred, typename In1Op, typename In2Op >
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struct partition_op
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{
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template< typename State, typename T >
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struct apply
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{
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typedef typename State::first first_;
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typedef typename State::second second_;
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typedef typename apply1< Pred,T >::type pred_;
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typedef typename eval_if<
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pred_
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, apply2<In1Op,first_,T>
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, apply2<In2Op,second_,T>
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>::type result_;
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typedef typename if_<
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pred_
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, pair< result_,second_ >
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, pair< first_,result_ >
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>::type type;
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};
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};
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} // namespace aux
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BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(3, aux::partition_op)
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}}
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#endif // BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
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