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#ifndef BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
#define BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
// Copyright Eric Friedman 2003
// Copyright Aleksey Gurtovoy 2004
//
// 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/mpl for documentation.
// $Id$
// $Date$
// $Revision$
#include <boost/mpl/apply.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/pair.hpp>
#include <boost/mpl/aux_/lambda_spec.hpp>
namespace boost { namespace mpl {
namespace aux {
template< typename Pred, typename In1Op, typename In2Op >
struct partition_op
{
template< typename State, typename T >
struct apply
{
typedef typename State::first first_;
typedef typename State::second second_;
typedef typename apply1< Pred,T >::type pred_;
typedef typename eval_if<
pred_
, apply2<In1Op,first_,T>
, apply2<In2Op,second_,T>
>::type result_;
typedef typename if_<
pred_
, pair< result_,second_ >
, pair< first_,result_ >
>::type type;
};
};
} // namespace aux
BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(3, aux::partition_op)
}}
#endif // BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED
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