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Diffstat (limited to 'src/third_party/boost-1.69.0/boost/fusion/sequence/intrinsic/segments.hpp')
-rw-r--r-- | src/third_party/boost-1.69.0/boost/fusion/sequence/intrinsic/segments.hpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/fusion/sequence/intrinsic/segments.hpp b/src/third_party/boost-1.69.0/boost/fusion/sequence/intrinsic/segments.hpp new file mode 100644 index 00000000000..41501a96435 --- /dev/null +++ b/src/third_party/boost-1.69.0/boost/fusion/sequence/intrinsic/segments.hpp @@ -0,0 +1,79 @@ +/*============================================================================= + Copyright (c) 2006 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_SEGMENTS_04052005_1141) +#define BOOST_FUSION_SEGMENTS_04052005_1141 + +#include <boost/fusion/support/config.hpp> +#include <boost/type_traits/is_const.hpp> +#include <boost/utility/enable_if.hpp> +#include <boost/fusion/sequence/intrinsic_fwd.hpp> +#include <boost/fusion/support/tag_of.hpp> + +namespace boost { namespace fusion +{ + // Special tags: + struct sequence_facade_tag; + struct iterator_range_tag; + + // segments: returns a sequence of sequences + namespace extension + { + template <typename Tag> + struct segments_impl + { + template <typename Sequence> + struct apply {}; + }; + + template <> + struct segments_impl<sequence_facade_tag> + { + template <typename Sequence> + struct apply : Sequence::template segments<Sequence> {}; + }; + + template <> + struct segments_impl<iterator_range_tag>; + } + + namespace result_of + { + template <typename Sequence> + struct segments + { + typedef typename traits::tag_of<Sequence>::type tag_type; + + typedef typename + extension::segments_impl<tag_type>::template apply<Sequence>::type + type; + }; + } + + template <typename Sequence> + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + inline typename + lazy_disable_if< + is_const<Sequence> + , result_of::segments<Sequence> + >::type + segments(Sequence& seq) + { + typedef typename traits::tag_of<Sequence>::type tag_type; + return extension::segments_impl<tag_type>::template apply<Sequence>::call(seq); + } + + template <typename Sequence> + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + inline typename result_of::segments<Sequence const>::type + segments(Sequence const& seq) + { + typedef typename traits::tag_of<Sequence const>::type tag_type; + return extension::segments_impl<tag_type>::template apply<Sequence const>::call(seq); + } +}} + +#endif |