| /*============================================================================= | |
| Copyright (c) 2009 Hartmut Kaiser | |
| 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_NVIEW_DISTANCE_IMPL_SEP_23_2009_0328PM) | |
| #define BOOST_FUSION_NVIEW_DISTANCE_IMPL_SEP_23_2009_0328PM | |
| #include <boost/fusion/iterator/distance.hpp> | |
| namespace boost { namespace fusion | |
| { | |
| struct nview_iterator_tag; | |
| namespace extension | |
| { | |
| template<typename Tag> | |
| struct distance_impl; | |
| template<> | |
| struct distance_impl<nview_iterator_tag> | |
| { | |
| template<typename First, typename Last> | |
| struct apply | |
| : result_of::distance<typename First::first_type, typename Last::first_type> | |
| { | |
| typedef typename result_of::distance< | |
| typename First::first_type, typename Last::first_type | |
| >::type type; | |
| static type | |
| call(First const& /*first*/, Last const& /*last*/) | |
| { | |
| return type(); | |
| } | |
| }; | |
| }; | |
| } | |
| }} | |
| #endif |