Chris@16: 
Chris@16: #ifndef BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED
Chris@16: #define BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Eric Friedman 2002-2003
Chris@16: // Copyright Aleksey Gurtovoy 2004
Chris@16: //
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/mpl for documentation.
Chris@16: 
Chris@101: // $Id$
Chris@101: // $Date$
Chris@101: // $Revision$
Chris@16: 
Chris@16: #include <boost/mpl/fold.hpp>
Chris@16: #include <boost/mpl/reverse_fold.hpp>
Chris@16: #include <boost/mpl/protect.hpp>
Chris@16: #include <boost/mpl/aux_/partition_op.hpp>
Chris@16: #include <boost/mpl/aux_/inserter_algorithm.hpp>
Chris@16: #include <boost/mpl/aux_/na.hpp>
Chris@16: 
Chris@16: namespace boost { namespace mpl {
Chris@16: 
Chris@16: namespace aux {
Chris@16:  
Chris@16: template <
Chris@16:       typename Sequence
Chris@16:     , typename Pred
Chris@16:     , typename In
Chris@16:     , typename In2
Chris@16:     , typename In1 = typename if_na<In,In2>::type
Chris@16:     >
Chris@16: struct stable_partition_impl
Chris@16:     : fold<
Chris@16:           Sequence
Chris@16:         , pair< typename In1::state, typename In2::state >
Chris@16:         , protect< partition_op< 
Chris@16:               Pred
Chris@16:             , typename In1::operation
Chris@16:             , typename In2::operation
Chris@16:             > >
Chris@16:         >
Chris@16: {
Chris@16: };
Chris@16: 
Chris@16: template <
Chris@16:       typename Sequence
Chris@16:     , typename Pred
Chris@16:     , typename In
Chris@16:     , typename In2
Chris@16:     , typename In1 = typename if_na<In,In2>::type
Chris@16:     >
Chris@16: struct reverse_stable_partition_impl
Chris@16:     : reverse_fold<
Chris@16:           Sequence
Chris@16:         , pair< typename In1::state, typename In2::state >
Chris@16:         , protect< partition_op< 
Chris@16:               Pred
Chris@16:             , typename In1::operation
Chris@16:             , typename In2::operation
Chris@16:             > >
Chris@16:         >
Chris@16: {
Chris@16: };
Chris@16: 
Chris@16: } // namespace aux
Chris@16: 
Chris@16: BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(4, stable_partition)
Chris@16: 
Chris@16: }}
Chris@16: 
Chris@16: #endif // BOOST_MPL_STABLE_PARTITION_HPP_INCLUDED