diff options
Diffstat (limited to 'src/third_party/boost-1.56.0/boost/fusion/container/list/detail/empty_impl.hpp')
-rw-r--r-- | src/third_party/boost-1.56.0/boost/fusion/container/list/detail/empty_impl.hpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/third_party/boost-1.56.0/boost/fusion/container/list/detail/empty_impl.hpp b/src/third_party/boost-1.56.0/boost/fusion/container/list/detail/empty_impl.hpp new file mode 100644 index 00000000000..e25eab0bcc0 --- /dev/null +++ b/src/third_party/boost-1.56.0/boost/fusion/container/list/detail/empty_impl.hpp @@ -0,0 +1,39 @@ +/*============================================================================= + Copyright (c) 2007 Tobias Schwinger + + 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_SEQUENCE_EMPTY_IMPL_HPP_INCLUDED) +#define BOOST_FUSION_SEQUENCE_EMPTY_IMPL_HPP_INCLUDED + +#include <boost/fusion/support/config.hpp> +#include <boost/type_traits/is_convertible.hpp> +#include <boost/fusion/container/list/nil.hpp> + +namespace boost { namespace fusion +{ + struct cons_tag; + + struct nil_; + + template <typename Car, typename Cdr> + struct cons; + + namespace extension + { + template <typename Tag> + struct empty_impl; + + template <> + struct empty_impl<cons_tag> + { + template <typename Sequence> + struct apply + : boost::is_convertible<Sequence, nil_> + {}; + }; + } +}} + +#endif |