[44] | 1 | |
---|
| 2 | #ifndef BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED |
---|
| 3 | #define BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED |
---|
| 4 | |
---|
| 5 | // Copyright Eric Friedman 2003 |
---|
| 6 | // Copyright Aleksey Gurtovoy 2004 |
---|
| 7 | // |
---|
| 8 | // Distributed under the Boost Software License, Version 1.0. |
---|
| 9 | // (See accompanying file LICENSE_1_0.txt or copy at |
---|
| 10 | // http://www.boost.org/LICENSE_1_0.txt) |
---|
| 11 | // |
---|
| 12 | // See http://www.boost.org/libs/mpl for documentation. |
---|
| 13 | |
---|
| 14 | // $Id: partition_op.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
---|
| 15 | // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
---|
| 16 | // $Revision: 49267 $ |
---|
| 17 | |
---|
| 18 | #include <boost/mpl/apply.hpp> |
---|
| 19 | #include <boost/mpl/eval_if.hpp> |
---|
| 20 | #include <boost/mpl/if.hpp> |
---|
| 21 | #include <boost/mpl/pair.hpp> |
---|
| 22 | #include <boost/mpl/aux_/lambda_spec.hpp> |
---|
| 23 | |
---|
| 24 | namespace boost { namespace mpl { |
---|
| 25 | |
---|
| 26 | namespace aux { |
---|
| 27 | |
---|
| 28 | template< typename Pred, typename In1Op, typename In2Op > |
---|
| 29 | struct partition_op |
---|
| 30 | { |
---|
| 31 | template< typename State, typename T > |
---|
| 32 | struct apply |
---|
| 33 | { |
---|
| 34 | typedef typename State::first first_; |
---|
| 35 | typedef typename State::second second_; |
---|
| 36 | typedef typename apply1< Pred,T >::type pred_; |
---|
| 37 | |
---|
| 38 | typedef typename eval_if< |
---|
| 39 | pred_ |
---|
| 40 | , apply2<In1Op,first_,T> |
---|
| 41 | , apply2<In2Op,second_,T> |
---|
| 42 | >::type result_; |
---|
| 43 | |
---|
| 44 | typedef typename if_< |
---|
| 45 | pred_ |
---|
| 46 | , pair< result_,second_ > |
---|
| 47 | , pair< first_,result_ > |
---|
| 48 | >::type type; |
---|
| 49 | }; |
---|
| 50 | }; |
---|
| 51 | |
---|
| 52 | } // namespace aux |
---|
| 53 | |
---|
| 54 | BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(3, aux::partition_op) |
---|
| 55 | |
---|
| 56 | }} |
---|
| 57 | |
---|
| 58 | #endif // BOOST_MPL_AUX_PARTITION_OP_HPP_INCLUDED |
---|