boost/mpl/reverse_iter_fold.hpp

0001
0002 #ifndef BOOST_MPL_ITER_FOLD_BACKWARD_HPP_INCLUDED
0003 #define BOOST_MPL_ITER_FOLD_BACKWARD_HPP_INCLUDED
0004
0005 // Copyright Aleksey Gurtovoy 2001-2004
0006 // Copyright Dave Abrahams 2001-2002
0007 //
0008 // Distributed under the Boost Software License, Version 1.0.
0009 // (See accompanying file LICENSE_1_0.txt or copy at
0010 // http://www.boost.org/LICENSE_1_0.txt)
0011 //
0012 // See http://www.boost.org/libs/mpl for documentation.
0013
0014 // $Id$
0015 // $Date$
0016 // $Revision$
0017
0018 #include <boost/mpl/begin_end.hpp>
0019 #include <boost/mpl/O1_size.hpp>
0020 #include <boost/mpl/arg.hpp>
0021 #include <boost/mpl/lambda.hpp>
0022 #include <boost/mpl/aux_/reverse_iter_fold_impl.hpp>
0023 #include <boost/mpl/aux_/na_spec.hpp>
0024 #include <boost/mpl/aux_/lambda_support.hpp>
0025
0026 namespace boost { namespace mpl {
0027
0028 template<
0029       typename BOOST_MPL_AUX_NA_PARAM(Sequence)
0030     , typename BOOST_MPL_AUX_NA_PARAM(State)
0031     , typename BOOST_MPL_AUX_NA_PARAM(BackwardOp)
0032     , typename ForwardOp = arg<1>
0033     >
0034 struct reverse_iter_fold
0035 {
0036     typedef typename aux::reverse_iter_fold_impl<
0037           ::boost::mpl::O1_size<Sequence>::value
0038         , typename begin<Sequence>::type
0039         , typename end<Sequence>::type
0040         , State
0041         , typename lambda<BackwardOp>::type
0042         , typename lambda<ForwardOp>::type
0043         >::state type;
0044
0045     BOOST_MPL_AUX_LAMBDA_SUPPORT(
0046           4
0047         , reverse_iter_fold
0048         , (Sequence,State,BackwardOp,ForwardOp)
0049         )
0050 };
0051
0052 BOOST_MPL_AUX_NA_SPEC(3, reverse_iter_fold)
0053
0054 }}
0055
0056 #endif // BOOST_MPL_ITER_FOLD_BACKWARD_HPP_INCLUDED