146 lines
4.2 KiB
C++
146 lines
4.2 KiB
C++
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#ifndef BOOST_MPL_TRANSFORM_HPP_INCLUDED
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#define BOOST_MPL_TRANSFORM_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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// Copyright David Abrahams 2003-2004
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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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// $Id$
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// $Date$
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// $Revision$
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#include <boost/mpl/fold.hpp>
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#include <boost/mpl/reverse_fold.hpp>
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#include <boost/mpl/pair_view.hpp>
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#include <boost/mpl/is_sequence.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/lambda.hpp>
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#include <boost/mpl/bind.hpp>
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#include <boost/mpl/or.hpp>
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#include <boost/mpl/not.hpp>
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#include <boost/mpl/aux_/na.hpp>
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#include <boost/mpl/aux_/inserter_algorithm.hpp>
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namespace boost { namespace mpl {
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namespace aux {
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template<
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typename Seq
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, typename Op
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, typename In
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>
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struct transform1_impl
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: fold<
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Seq
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, typename In::state
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, bind2< typename lambda< typename In::operation >::type
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, _1
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, bind1< typename lambda<Op>::type, _2>
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>
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>
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{
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};
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template<
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typename Seq
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, typename Op
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, typename In
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>
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struct reverse_transform1_impl
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: reverse_fold<
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Seq
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, typename In::state
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, bind2< typename lambda< typename In::operation >::type
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, _1
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, bind1< typename lambda<Op>::type, _2>
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>
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>
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{
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};
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template<
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typename Seq1
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, typename Seq2
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, typename Op
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, typename In
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>
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struct transform2_impl
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: fold<
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pair_view<Seq1,Seq2>
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, typename In::state
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, bind2< typename lambda< typename In::operation >::type
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, _1
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, bind2<
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typename lambda<Op>::type
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, bind1<first<>,_2>
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, bind1<second<>,_2>
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>
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>
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>
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{
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};
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template<
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typename Seq1
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, typename Seq2
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, typename Op
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, typename In
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>
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struct reverse_transform2_impl
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: reverse_fold<
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pair_view<Seq1,Seq2>
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, typename In::state
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, bind2< typename lambda< typename In::operation >::type
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, _1
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, bind2< typename lambda< Op >::type
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, bind1<first<>,_2>
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, bind1<second<>,_2>
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>
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>
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>
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{
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};
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} // namespace aux
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BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(3, transform1)
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BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(4, transform2)
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#define AUX778076_TRANSFORM_DEF(name) \
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template< \
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typename BOOST_MPL_AUX_NA_PARAM(Seq1) \
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, typename BOOST_MPL_AUX_NA_PARAM(Seq2OrOperation) \
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, typename BOOST_MPL_AUX_NA_PARAM(OperationOrInserter) \
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, typename BOOST_MPL_AUX_NA_PARAM(Inserter) \
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> \
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struct name \
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{ \
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typedef typename eval_if< \
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or_< \
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is_na<OperationOrInserter> \
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, is_lambda_expression< Seq2OrOperation > \
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, not_< is_sequence<Seq2OrOperation> > \
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> \
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, name##1<Seq1,Seq2OrOperation,OperationOrInserter> \
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, name##2<Seq1,Seq2OrOperation,OperationOrInserter,Inserter> \
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>::type type; \
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}; \
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BOOST_MPL_AUX_NA_SPEC(4, name) \
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/**/
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AUX778076_TRANSFORM_DEF(transform)
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AUX778076_TRANSFORM_DEF(reverse_transform)
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#undef AUX778076_TRANSFORM_DEF
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}}
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#endif // BOOST_MPL_TRANSFORM_HPP_INCLUDED
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