boost/mpl/transform.hpp
#ifndef BOOST_MPL_TRANSFORM_HPP_INCLUDED
#define BOOST_MPL_TRANSFORM_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2000-2004
// Copyright David Abrahams 2003-2004
//
// 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.
// $Source$
// $Date: 2004-12-20 12:18:17 -0500 (Mon, 20 Dec 2004) $
// $Revision: 26557 $
#include <boost/mpl/fold.hpp>
#include <boost/mpl/reverse_fold.hpp>
#include <boost/mpl/pair_view.hpp>
#include <boost/mpl/is_sequence.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/lambda.hpp>
#include <boost/mpl/bind.hpp>
#include <boost/mpl/or.hpp>
#include <boost/mpl/not.hpp>
#include <boost/mpl/aux_/na.hpp>
#include <boost/mpl/aux_/inserter_algorithm.hpp>
namespace boost { namespace mpl {
namespace aux {
template<
typename Seq
, typename Op
, typename In
>
struct transform1_impl
: fold<
Seq
, typename In::state
, bind2< typename lambda< typename In::operation >::type
, _1
, bind1< typename lambda<Op>::type, _2>
>
>
{
};
template<
typename Seq
, typename Op
, typename In
>
struct reverse_transform1_impl
: reverse_fold<
Seq
, typename In::state
, bind2< typename lambda< typename In::operation >::type
, _1
, bind1< typename lambda<Op>::type, _2>
>
>
{
};
template<
typename Seq1
, typename Seq2
, typename Op
, typename In
>
struct transform2_impl
: fold<
pair_view<Seq1,Seq2>
, typename In::state
, bind2< typename lambda< typename In::operation >::type
, _1
, bind2<
typename lambda<Op>::type
, bind1<first<>,_2>
, bind1<second<>,_2>
>
>
>
{
};
template<
typename Seq1
, typename Seq2
, typename Op
, typename In
>
struct reverse_transform2_impl
: reverse_fold<
pair_view<Seq1,Seq2>
, typename In::state
, bind2< typename lambda< typename In::operation >::type
, _1
, bind2< typename lambda< Op >::type
, bind1<first<>,_2>
, bind1<second<>,_2>
>
>
>
{
};
} // namespace aux
BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(3, transform1)
BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(4, transform2)
#define AUX778076_TRANSFORM_DEF(name) \
template< \
typename BOOST_MPL_AUX_NA_PARAM(Seq1) \
, typename BOOST_MPL_AUX_NA_PARAM(Seq2OrOperation) \
, typename BOOST_MPL_AUX_NA_PARAM(OperationOrInserter) \
, typename BOOST_MPL_AUX_NA_PARAM(Inserter) \
> \
struct name \
{ \
typedef typename eval_if< \
or_< \
is_na<OperationOrInserter> \
, is_lambda_expression< Seq2OrOperation > \
, not_< is_sequence<Seq2OrOperation> > \
> \
, name##1<Seq1,Seq2OrOperation,OperationOrInserter> \
, name##2<Seq1,Seq2OrOperation,OperationOrInserter,Inserter> \
>::type type; \
}; \
BOOST_MPL_AUX_NA_SPEC(4, name) \
/**/
AUX778076_TRANSFORM_DEF(transform)
AUX778076_TRANSFORM_DEF(reverse_transform)
#undef AUX778076_TRANSFORM_DEF
}}
#endif // BOOST_MPL_TRANSFORM_HPP_INCLUDED