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| 2 | #ifndef BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED |
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| 3 | #define BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED |
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| 4 | |
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| 5 | // Copyright Eric Friedman 2003 |
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| 6 | // Copyright Aleksey Gurtovoy 2004 |
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| 7 | // |
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| 8 | // Distributed under the Boost Software License, Version 1.0. |
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| 9 | // (See accompanying file LICENSE_1_0.txt or copy at |
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| 10 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 11 | // |
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| 12 | // See http://www.boost.org/libs/mpl for documentation. |
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| 13 | |
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| 14 | // $Source: /cvsroot/boost/boost/boost/mpl/aux_/partition_op.hpp,v $ |
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| 15 | // $Date: 2004/11/28 01:46:37 $ |
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| 16 | // $Revision: 1.4 $ |
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| 17 | |
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| 18 | #include <boost/mpl/apply.hpp> |
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| 19 | #include <boost/mpl/eval_if.hpp> |
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| 20 | #include <boost/mpl/if.hpp> |
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| 21 | #include <boost/mpl/pair.hpp> |
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| 22 | #include <boost/mpl/aux_/lambda_spec.hpp> |
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| 23 | |
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| 24 | namespace boost { namespace mpl { |
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| 25 | |
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| 26 | namespace aux { |
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| 27 | |
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| 28 | template< typename Pred, typename In1Op, typename In2Op > |
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| 29 | struct partition_op |
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| 30 | { |
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| 31 | template< typename State, typename T > |
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| 32 | struct apply |
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| 33 | { |
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| 34 | typedef typename State::first first_; |
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| 35 | typedef typename State::second second_; |
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| 36 | typedef typename apply1< Pred,T >::type pred_; |
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| 37 | |
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| 38 | typedef typename eval_if< |
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| 39 | pred_ |
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| 40 | , apply2<In1Op,first_,T> |
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| 41 | , apply2<In2Op,second_,T> |
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| 42 | >::type result_; |
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| 43 | |
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| 44 | typedef typename if_< |
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| 45 | pred_ |
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| 46 | , pair< result_,second_ > |
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| 47 | , pair< first_,result_ > |
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| 48 | >::type type; |
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| 49 | }; |
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| 50 | }; |
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| 51 | |
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| 52 | } // namespace aux |
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| 53 | |
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| 54 | BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(3, aux::partition_op) |
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| 55 | |
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| 56 | }} |
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| 57 | |
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| 58 | #endif // BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED |
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