123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172 |
- /*=============================================================================
- 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_REVERSE_VIEW_07202005_0836)
- #define FUSION_REVERSE_VIEW_07202005_0836
- #include <boost/fusion/support/config.hpp>
- #include <boost/fusion/support/detail/access.hpp>
- #include <boost/fusion/support/is_view.hpp>
- #include <boost/fusion/support/category_of.hpp>
- #include <boost/fusion/view/reverse_view/reverse_view_iterator.hpp>
- #include <boost/fusion/view/reverse_view/detail/begin_impl.hpp>
- #include <boost/fusion/view/reverse_view/detail/end_impl.hpp>
- #include <boost/fusion/view/reverse_view/detail/at_impl.hpp>
- #include <boost/fusion/view/reverse_view/detail/value_at_impl.hpp>
- #include <boost/fusion/support/sequence_base.hpp>
- #include <boost/fusion/sequence/intrinsic/begin.hpp>
- #include <boost/fusion/sequence/intrinsic/end.hpp>
- #include <boost/fusion/sequence/intrinsic/size.hpp>
- #include <boost/type_traits/is_base_of.hpp>
- #include <boost/static_assert.hpp>
- #include <boost/mpl/bool.hpp>
- #include <boost/mpl/eval_if.hpp>
- #include <boost/mpl/inherit.hpp>
- #include <boost/mpl/identity.hpp>
- namespace boost { namespace fusion
- {
- struct reverse_view_tag;
- struct fusion_sequence_tag;
- template <typename Sequence>
- struct reverse_view : sequence_base<reverse_view<Sequence> >
- {
- typedef reverse_view_tag fusion_tag;
- typedef fusion_sequence_tag tag; // this gets picked up by MPL
- typedef mpl::true_ is_view;
- typedef Sequence seq_type;
- typedef typename traits::category_of<Sequence>::type category;
- typedef typename result_of::begin<Sequence>::type first_type;
- typedef typename result_of::end<Sequence>::type last_type;
- typedef typename result_of::size<Sequence>::type size;
- BOOST_STATIC_ASSERT((
- is_base_of<
- bidirectional_traversal_tag
- , typename traits::category_of<first_type>::type>::value));
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- reverse_view(Sequence& in_seq)
- : seq(in_seq)
- {}
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- first_type first() const { return fusion::begin(seq); }
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- last_type last() const { return fusion::end(seq); }
- typename mpl::if_<traits::is_view<Sequence>, Sequence, Sequence&>::type seq;
- private:
- // silence MSVC warning C4512: assignment operator could not be generated
- reverse_view& operator= (reverse_view const&);
- };
- }}
- #endif
|