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Diffstat (limited to 'src/third_party/boost-1.60.0/boost/fusion/view/single_view/detail/distance_impl.hpp')
-rw-r--r-- | src/third_party/boost-1.60.0/boost/fusion/view/single_view/detail/distance_impl.hpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/third_party/boost-1.60.0/boost/fusion/view/single_view/detail/distance_impl.hpp b/src/third_party/boost-1.60.0/boost/fusion/view/single_view/detail/distance_impl.hpp new file mode 100644 index 00000000000..9cd85fdc316 --- /dev/null +++ b/src/third_party/boost-1.60.0/boost/fusion/view/single_view/detail/distance_impl.hpp @@ -0,0 +1,45 @@ +/*============================================================================= + Copyright (c) 2011 Eric Niebler + + 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_SINGLE_VIEW_DISTANCE_IMPL_JUL_07_2011_1348PM) +#define BOOST_FUSION_SINGLE_VIEW_DISTANCE_IMPL_JUL_07_2011_1348PM + +#include <boost/fusion/support/config.hpp> +#include <boost/mpl/minus.hpp> + +namespace boost { namespace fusion +{ + struct single_view_iterator_tag; + + namespace extension + { + template<typename Tag> + struct distance_impl; + + template<> + struct distance_impl<single_view_iterator_tag> + { + template<typename First, typename Last> + struct apply + : mpl::minus<typename Last::position, typename First::position> + { + typedef typename mpl::minus<typename Last::position, + typename First::position>::type type; + + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + static type + call(First const& /*first*/, Last const& /*last*/) + { + return type(); + } + }; + }; + } + +}} + +#endif |