#ifndef BOOST_MPL_REMOVE_IF_HPP_INCLUDED | |
#define BOOST_MPL_REMOVE_IF_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. | |
// $Id: remove_if.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ | |
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ | |
// $Revision: 49267 $ | |
#include <boost/mpl/fold.hpp> | |
#include <boost/mpl/reverse_fold.hpp> | |
#include <boost/mpl/eval_if.hpp> | |
#include <boost/mpl/identity.hpp> | |
#include <boost/mpl/protect.hpp> | |
#include <boost/mpl/lambda.hpp> | |
#include <boost/mpl/apply.hpp> | |
#include <boost/mpl/aux_/inserter_algorithm.hpp> | |
namespace boost { namespace mpl { | |
namespace aux { | |
template< typename Pred, typename InsertOp > struct remove_if_helper | |
{ | |
template< typename Sequence, typename U > struct apply | |
{ | |
typedef typename eval_if< | |
typename apply1<Pred,U>::type | |
, identity<Sequence> | |
, apply2<InsertOp,Sequence,U> | |
>::type type; | |
}; | |
}; | |
template< | |
typename Sequence | |
, typename Predicate | |
, typename Inserter | |
> | |
struct remove_if_impl | |
: fold< | |
Sequence | |
, typename Inserter::state | |
, protect< aux::remove_if_helper< | |
typename lambda<Predicate>::type | |
, typename Inserter::operation | |
> > | |
> | |
{ | |
}; | |
template< | |
typename Sequence | |
, typename Predicate | |
, typename Inserter | |
> | |
struct reverse_remove_if_impl | |
: reverse_fold< | |
Sequence | |
, typename Inserter::state | |
, protect< aux::remove_if_helper< | |
typename lambda<Predicate>::type | |
, typename Inserter::operation | |
> > | |
> | |
{ | |
}; | |
} // namespace aux | |
BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(3, remove_if) | |
}} | |
#endif // BOOST_MPL_REMOVE_IF_HPP_INCLUDED |