12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849 |
- /*=============================================================================
- Copyright (c) 2001-2011 Joel de Guzman
- Copyright (c) 2005-2006 Dan Marsden
- 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_ADVANCE_IMPL_14122005_2015)
- #define FUSION_ADVANCE_IMPL_14122005_2015
- #include <boost/fusion/support/config.hpp>
- #include <boost/fusion/iterator/advance.hpp>
- #include <boost/mpl/negate.hpp>
- namespace boost { namespace fusion {
- struct reverse_view_iterator_tag;
- template <typename Iterator>
- struct reverse_view_iterator;
- namespace extension
- {
- template<typename Tag>
- struct advance_impl;
- template<>
- struct advance_impl<reverse_view_iterator_tag>
- {
- template<typename Iterator, typename Dist>
- struct apply
- {
- typedef typename Iterator::first_type first_type;
- typedef typename mpl::negate<Dist>::type negative_dist;
- typedef typename result_of::advance<first_type, negative_dist>::type advanced_type;
- typedef reverse_view_iterator<advanced_type> type;
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- static type
- call(Iterator const& i)
- {
- return type(boost::fusion::advance<negative_dist>(i.first));
- }
- };
- };
- }
- }}
- #endif
|