| /*============================================================================= |
| Copyright (c) 2007 Tobias Schwinger |
| |
| 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) |
| ==============================================================================*/ |
| |
| #if !defined(BOOST_FUSION_ITERATOR_RANGE_VALUE_AT_IMPL_HPP_INCLUDED) |
| #define BOOST_FUSION_ITERATOR_RANGE_VALUE_AT_IMPL_HPP_INCLUDED |
| |
| #include <boost/fusion/iterator/advance.hpp> |
| #include <boost/fusion/iterator/value_of.hpp> |
| |
| namespace boost { namespace fusion |
| { |
| struct iterator_range_tag; |
| |
| namespace extension |
| { |
| template <typename Tag> |
| struct value_at_impl; |
| |
| template <> |
| struct value_at_impl<iterator_range_tag> |
| { |
| template <typename Seq, typename N> |
| struct apply |
| { |
| typedef typename Seq::begin_type begin_type; |
| typedef typename result_of::advance<begin_type,N>::type pos; |
| typedef typename result_of::value_of<pos>::type type; |
| }; |
| }; |
| } |
| }} |
| |
| #endif |
| |