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Diffstat (limited to '3rdParty/Boost/src/boost/fusion/sequence/intrinsic/begin.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/fusion/sequence/intrinsic/begin.hpp | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/fusion/sequence/intrinsic/begin.hpp b/3rdParty/Boost/src/boost/fusion/sequence/intrinsic/begin.hpp new file mode 100644 index 0000000..7a7ecf6 --- /dev/null +++ b/3rdParty/Boost/src/boost/fusion/sequence/intrinsic/begin.hpp @@ -0,0 +1,95 @@ +/*============================================================================= + Copyright (c) 2001-2011 Joel de Guzman + + 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_BEGIN_04052005_1132) +#define FUSION_BEGIN_04052005_1132 + +#include <boost/blank.hpp> +#include <boost/utility/enable_if.hpp> +#include <boost/mpl/if.hpp> +#include <boost/fusion/sequence/intrinsic_fwd.hpp> +#include <boost/fusion/support/tag_of.hpp> +#include <boost/fusion/support/is_sequence.hpp> +#include <boost/fusion/support/is_segmented.hpp> +#include <boost/fusion/sequence/intrinsic/detail/segmented_begin.hpp> + +namespace boost { namespace fusion +{ + // Special tags: + struct sequence_facade_tag; // iterator facade tag + struct boost_tuple_tag; // boost::tuples::tuple tag + struct boost_array_tag; // boost::array tag + struct mpl_sequence_tag; // mpl sequence tag + struct std_pair_tag; // std::pair tag + + namespace extension + { + template <typename Tag> + struct begin_impl + { + template <typename Sequence> + struct apply + : mpl::if_< + traits::is_segmented<Sequence> + , detail::segmented_begin<Sequence> + , blank + >::type + {}; + }; + + template <> + struct begin_impl<sequence_facade_tag> + { + template <typename Sequence> + struct apply : Sequence::template begin<Sequence> {}; + }; + + template <> + struct begin_impl<boost_tuple_tag>; + + template <> + struct begin_impl<boost_array_tag>; + + template <> + struct begin_impl<mpl_sequence_tag>; + + template <> + struct begin_impl<std_pair_tag>; + } + + namespace result_of + { + template <typename Sequence> + struct begin + : extension::begin_impl<typename detail::tag_of<Sequence>::type>:: + template apply<Sequence> + {}; + } + + template <typename Sequence> + inline typename + lazy_enable_if< + traits::is_sequence<Sequence> + , result_of::begin<Sequence> + >::type const + begin(Sequence& seq) + { + return result_of::begin<Sequence>::call(seq); + } + + template <typename Sequence> + inline typename + lazy_enable_if< + traits::is_sequence<Sequence> + , result_of::begin<Sequence const> + >::type const + begin(Sequence const& seq) + { + return result_of::begin<Sequence const>::call(seq); + } +}} + +#endif |