Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2009 Hartmut Kaiser
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: 
Chris@16: #if !defined(BOOST_FUSION_NVIEW_DISTANCE_IMPL_SEP_23_2009_0328PM)
Chris@16: #define BOOST_FUSION_NVIEW_DISTANCE_IMPL_SEP_23_2009_0328PM
Chris@16: 
Chris@101: #include <boost/fusion/support/config.hpp>
Chris@16: #include <boost/fusion/iterator/distance.hpp>
Chris@16: 
Chris@16: namespace boost { namespace fusion 
Chris@16: {
Chris@16:     struct nview_iterator_tag;
Chris@16: 
Chris@16:     namespace extension
Chris@16:     {
Chris@16:         template<typename Tag>
Chris@16:         struct distance_impl;
Chris@16: 
Chris@16:         template<>
Chris@16:         struct distance_impl<nview_iterator_tag>
Chris@16:         {
Chris@16:             template<typename First, typename Last>
Chris@16:             struct apply
Chris@16:               : result_of::distance<typename First::first_type, typename Last::first_type>
Chris@16:             {
Chris@16:                 typedef typename result_of::distance<
Chris@16:                     typename First::first_type, typename Last::first_type
Chris@16:                 >::type type;
Chris@16: 
Chris@101:                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:                 static type
Chris@16:                 call(First const& /*first*/, Last const& /*last*/)
Chris@16:                 {
Chris@16:                     return type();
Chris@16:                 }
Chris@16:             };
Chris@16:         };
Chris@16:     }
Chris@16: 
Chris@16: }}
Chris@16: 
Chris@16: #endif