| /*============================================================================= |
| Copyright (c) 2009 Christopher Schmidt |
| |
| 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) |
| ==============================================================================*/ |
| |
| #ifndef BOOST_FUSION_VIEW_REVERSE_VIEW_DETAIL_AT_IMPL_HPP |
| #define BOOST_FUSION_VIEW_REVERSE_VIEW_DETAIL_AT_IMPL_HPP |
| |
| #include <boost/fusion/sequence/intrinsic/at.hpp> |
| #include <boost/mpl/minus.hpp> |
| #include <boost/mpl/int.hpp> |
| |
| namespace boost { namespace fusion { namespace extension |
| { |
| template <typename> |
| struct at_impl; |
| |
| template <> |
| struct at_impl<reverse_view_tag> |
| { |
| template <typename Seq, typename N> |
| struct apply |
| { |
| typedef mpl::minus<typename Seq::size, mpl::int_<1>, N> real_n; |
| |
| typedef typename |
| result_of::at<typename Seq::seq_type, real_n>::type |
| type; |
| |
| static type |
| call(Seq& seq) |
| { |
| return fusion::at<real_n>(seq.seq); |
| } |
| }; |
| }; |
| }}} |
| |
| #endif |