diff options
Diffstat (limited to 'src/third_party/boost-1.69.0/boost/fusion/container/list/detail/deref_impl.hpp')
-rw-r--r-- | src/third_party/boost-1.69.0/boost/fusion/container/list/detail/deref_impl.hpp | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/fusion/container/list/detail/deref_impl.hpp b/src/third_party/boost-1.69.0/boost/fusion/container/list/detail/deref_impl.hpp new file mode 100644 index 00000000000..3358a2a2f9f --- /dev/null +++ b/src/third_party/boost-1.69.0/boost/fusion/container/list/detail/deref_impl.hpp @@ -0,0 +1,54 @@ +/*============================================================================= + Copyright (c) 2001-2011 Joel de Guzman + Copyright (c) 2005 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(FUSION_DEREF_IMPL_07172005_0831) +#define FUSION_DEREF_IMPL_07172005_0831 + +#include <boost/fusion/support/config.hpp> +#include <boost/mpl/eval_if.hpp> +#include <boost/type_traits/is_const.hpp> +#include <boost/type_traits/add_const.hpp> +#include <boost/type_traits/add_reference.hpp> + +namespace boost { namespace fusion +{ + struct cons_iterator_tag; + + namespace extension + { + template <typename Tag> + struct deref_impl; + + template <> + struct deref_impl<cons_iterator_tag> + { + template <typename Iterator> + struct apply + { + typedef typename Iterator::cons_type cons_type; + typedef typename cons_type::car_type value_type; + + typedef typename mpl::eval_if< + is_const<cons_type> + , add_reference<typename add_const<value_type>::type> + , add_reference<value_type> >::type + type; + + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + static type + call(Iterator const& i) + { + return i.cons.car; + } + }; + }; + } +}} + +#endif + + |