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- /*=============================================================================
- 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_PRIOR_IMPL_07202005_0857)
- #define FUSION_PRIOR_IMPL_07202005_0857
- #include <boost/fusion/support/config.hpp>
- #include <boost/fusion/iterator/next.hpp>
- #include <boost/fusion/iterator/prior.hpp>
- namespace boost { namespace fusion
- {
- struct reverse_view_iterator_tag;
- template <typename Iterator>
- struct reverse_view_iterator;
- namespace extension
- {
- template <>
- struct prior_impl<reverse_view_iterator_tag>
- {
- template <typename Iterator>
- struct apply
- {
- typedef typename Iterator::first_type first_type;
- typedef typename next_impl<typename first_type::fusion_tag>::
- template apply<first_type>
- wrapped;
-
- typedef reverse_view_iterator<typename wrapped::type> type;
-
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- static type
- call(Iterator const& i)
- {
- return type(wrapped::call(i.first));
- }
- };
- };
- }
- }}
- #endif
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