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Diffstat (limited to 'boost/fusion/adapted/boost_tuple/detail/end_impl.hpp')
-rw-r--r-- | boost/fusion/adapted/boost_tuple/detail/end_impl.hpp | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/boost/fusion/adapted/boost_tuple/detail/end_impl.hpp b/boost/fusion/adapted/boost_tuple/detail/end_impl.hpp new file mode 100644 index 0000000000..e54702bf74 --- /dev/null +++ b/boost/fusion/adapted/boost_tuple/detail/end_impl.hpp @@ -0,0 +1,54 @@ +/*============================================================================= + 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(BOOST_FUSION_END_IMPL_09272006_0721) +#define BOOST_FUSION_END_IMPL_09272006_0721 + +#include <boost/fusion/adapted/boost_tuple/boost_tuple_iterator.hpp> +#include <boost/mpl/if.hpp> +#include <boost/type_traits/is_const.hpp> + +namespace boost { namespace tuples +{ + struct null_type; +}} + +namespace boost { namespace fusion +{ + struct boost_tuple_tag; + + namespace extension + { + template <typename Tag> + struct end_impl; + + template <> + struct end_impl<boost_tuple_tag> + { + template <typename Sequence> + struct apply + { + typedef + boost_tuple_iterator< + typename mpl::if_< + is_const<Sequence> + , tuples::null_type const + , tuples::null_type + >::type + > + type; + + static type + call(Sequence& seq) + { + return type(seq); + } + }; + }; + } +}} + +#endif |