| /*============================================================================= |
| Copyright (c) 2001-2006 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/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)); |
| |
| reverse_view(Sequence& in_seq) |
| : seq(in_seq) |
| {} |
| |
| first_type first() const { return fusion::begin(seq); } |
| 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 |
| |
| |