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Diffstat (limited to 'src/third_party/boost-1.69.0/boost/fusion/support/is_sequence.hpp')
-rw-r--r-- | src/third_party/boost-1.69.0/boost/fusion/support/is_sequence.hpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/fusion/support/is_sequence.hpp b/src/third_party/boost-1.69.0/boost/fusion/support/is_sequence.hpp new file mode 100644 index 00000000000..95a9423f942 --- /dev/null +++ b/src/third_party/boost-1.69.0/boost/fusion/support/is_sequence.hpp @@ -0,0 +1,73 @@ +/*============================================================================= + 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_IS_SEQUENCE_05052005_1002) +#define FUSION_IS_SEQUENCE_05052005_1002 + +#include <boost/fusion/support/config.hpp> +#include <boost/fusion/support/sequence_base.hpp> +#include <boost/fusion/support/tag_of.hpp> +#include <boost/fusion/support/detail/is_native_fusion_sequence.hpp> +#include <boost/mpl/bool.hpp> +#include <boost/mpl/is_sequence.hpp> +#include <boost/type_traits/is_convertible.hpp> + +namespace boost { namespace fusion +{ + // Special tags: + struct non_fusion_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 T> + struct is_sequence_impl + { + template <typename Sequence> + struct apply + : is_convertible<Sequence, fusion::detail::from_sequence_convertible_type> + {}; + }; + + template <> + struct is_sequence_impl<non_fusion_tag> + { + template <typename T> + struct apply : mpl::false_ {}; + }; + + template <> + struct is_sequence_impl<boost_tuple_tag>; + + template <> + struct is_sequence_impl<boost_array_tag>; + + template <> + struct is_sequence_impl<mpl_sequence_tag>; + + template <> + struct is_sequence_impl<std_pair_tag>; + } + + namespace traits + { + template <typename T> + struct is_sequence + : mpl::bool_< + (bool)extension::is_sequence_impl< + typename fusion::detail::tag_of<T>::type + >::template apply<T>::type::value + > + {}; + + using detail::is_native_fusion_sequence; + } +}} + +#endif |