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/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Copyright (c) 2005-2006 Dan Marsden
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(FUSION_DISTANCE_IMPL_13122005_2139)
#define FUSION_DISTANCE_IMPL_13122005_2139
#include <boost/fusion/support/config.hpp>
#include <boost/fusion/iterator/distance.hpp>
namespace boost { namespace fusion {
struct transform_view_iterator_tag;
struct transform_view_iterator2_tag;
namespace extension
{
template<typename Tag>
struct distance_impl;
// Unary Version
template<>
struct distance_impl<transform_view_iterator_tag>
{
template<typename First, typename Last>
struct apply
: result_of::distance<typename First::first_type, typename Last::first_type>
{
BOOST_FUSION_GPU_ENABLED
static
typename result_of::distance<typename First::first_type, typename Last::first_type>::type
call(First const& first, Last const& last)
{
return boost::fusion::distance(first.first, last.first);
}
};
};
// Binary Version
template<>
struct distance_impl<transform_view_iterator2_tag>
{
template<typename First, typename Last>
struct apply
: result_of::distance<typename First::first1_type, typename Last::first1_type>
{
BOOST_FUSION_GPU_ENABLED
static
typename result_of::distance<typename First::first1_type, typename Last::first1_type>::type
call(First const& first, Last const& last)
{
return boost::fusion::distance(first.first1, last.first1);
}
};
};
}
}}
#endif
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