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Diffstat (limited to '3rdParty/Boost/src/boost/mpl/aux_/erase_impl.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/mpl/aux_/erase_impl.hpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/mpl/aux_/erase_impl.hpp b/3rdParty/Boost/src/boost/mpl/aux_/erase_impl.hpp new file mode 100644 index 0000000..5fc1712 --- /dev/null +++ b/3rdParty/Boost/src/boost/mpl/aux_/erase_impl.hpp @@ -0,0 +1,69 @@ + +#ifndef BOOST_MPL_AUX_ERASE_IMPL_HPP_INCLUDED +#define BOOST_MPL_AUX_ERASE_IMPL_HPP_INCLUDED + +// Copyright Aleksey Gurtovoy 2000-2004 +// +// 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: erase_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ +// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $ +// $Revision: 49267 $ + +#include <boost/mpl/clear.hpp> +#include <boost/mpl/push_front.hpp> +#include <boost/mpl/reverse_fold.hpp> +#include <boost/mpl/iterator_range.hpp> +#include <boost/mpl/next.hpp> +#include <boost/mpl/aux_/na.hpp> + +namespace boost { namespace mpl { + +// default implementation; conrete sequences might override it by +// specializing either the 'erase_impl' or the primary 'erase' template + +template< typename Tag > +struct erase_impl +{ + template< + typename Sequence + , typename First + , typename Last + > + struct apply + { + typedef typename if_na< Last,typename next<First>::type >::type last_; + + // 1st half: [begin, first) + typedef iterator_range< + typename begin<Sequence>::type + , First + > first_half_; + + // 2nd half: [last, end) ... that is, [last + 1, end) + typedef iterator_range< + last_ + , typename end<Sequence>::type + > second_half_; + + typedef typename reverse_fold< + second_half_ + , typename clear<Sequence>::type + , push_front<_,_> + >::type half_sequence_; + + typedef typename reverse_fold< + first_half_ + , half_sequence_ + , push_front<_,_> + >::type type; + }; +}; + +}} + +#endif // BOOST_MPL_AUX_ERASE_IMPL_HPP_INCLUDED |