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83 lines
1.8 KiB
83 lines
1.8 KiB
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#ifndef BOOST_MPL_REMOVE_IF_HPP_INCLUDED |
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#define BOOST_MPL_REMOVE_IF_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/eval_if.hpp> |
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#include <boost/mpl/identity.hpp> |
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#include <boost/mpl/protect.hpp> |
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#include <boost/mpl/lambda.hpp> |
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#include <boost/mpl/apply.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< typename Pred, typename InsertOp > struct remove_if_helper |
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{ |
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template< typename Sequence, typename U > struct apply |
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{ |
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typedef typename eval_if< |
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typename apply1<Pred,U>::type |
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, identity<Sequence> |
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, apply2<InsertOp,Sequence,U> |
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>::type type; |
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}; |
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}; |
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template< |
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typename Sequence |
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, typename Predicate |
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, typename Inserter |
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> |
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struct remove_if_impl |
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: fold< |
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Sequence |
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, typename Inserter::state |
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, protect< aux::remove_if_helper< |
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typename lambda<Predicate>::type |
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, typename Inserter::operation |
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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 Sequence |
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, typename Predicate |
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, typename Inserter |
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> |
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struct reverse_remove_if_impl |
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: reverse_fold< |
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Sequence |
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, typename Inserter::state |
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, protect< aux::remove_if_helper< |
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typename lambda<Predicate>::type |
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, typename Inserter::operation |
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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, remove_if) |
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}} |
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#endif // BOOST_MPL_REMOVE_IF_HPP_INCLUDED
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