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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_05042005_1145)
- #define FUSION_PRIOR_IMPL_05042005_1145
- #include <boost/fusion/support/config.hpp>
- #include <boost/fusion/container/vector/vector_iterator.hpp>
- namespace boost { namespace fusion
- {
- struct vector_iterator_tag;
- template <typename Vector, int N>
- struct vector_iterator;
- namespace extension
- {
- template <typename Tag>
- struct prior_impl;
- template <>
- struct prior_impl<vector_iterator_tag>
- {
- template <typename Iterator>
- struct apply
- {
- typedef typename Iterator::vector vector;
- typedef typename Iterator::index index;
- typedef vector_iterator<vector, index::value-1> type;
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- static type
- call(Iterator const& i)
- {
- return type(i.vec);
- }
- };
- };
- }
- }}
- #endif
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