73 lines
2.8 KiB
Plaintext
73 lines
2.8 KiB
Plaintext
/*=============================================================================
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Copyright (c) 2001-2011 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_REVERSE_VIEW_07202005_0836)
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#define FUSION_REVERSE_VIEW_07202005_0836
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/support/detail/access.hpp>
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#include <boost/fusion/support/is_view.hpp>
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#include <boost/fusion/support/category_of.hpp>
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#include <boost/fusion/view/reverse_view/reverse_view_iterator.hpp>
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#include <boost/fusion/view/reverse_view/detail/begin_impl.hpp>
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#include <boost/fusion/view/reverse_view/detail/end_impl.hpp>
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#include <boost/fusion/view/reverse_view/detail/at_impl.hpp>
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#include <boost/fusion/view/reverse_view/detail/value_at_impl.hpp>
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#include <boost/fusion/support/sequence_base.hpp>
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#include <boost/fusion/sequence/intrinsic/begin.hpp>
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#include <boost/fusion/sequence/intrinsic/end.hpp>
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#include <boost/fusion/sequence/intrinsic/size.hpp>
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#include <boost/type_traits/is_base_of.hpp>
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#include <boost/static_assert.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/mpl/inherit.hpp>
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#include <boost/mpl/identity.hpp>
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namespace boost { namespace fusion
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{
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struct reverse_view_tag;
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struct fusion_sequence_tag;
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template <typename Sequence>
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struct reverse_view : sequence_base<reverse_view<Sequence> >
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{
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typedef reverse_view_tag fusion_tag;
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typedef fusion_sequence_tag tag; // this gets picked up by MPL
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typedef mpl::true_ is_view;
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typedef Sequence seq_type;
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typedef typename traits::category_of<Sequence>::type category;
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typedef typename result_of::begin<Sequence>::type first_type;
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typedef typename result_of::end<Sequence>::type last_type;
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typedef typename result_of::size<Sequence>::type size;
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BOOST_STATIC_ASSERT((
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is_base_of<
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bidirectional_traversal_tag
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, typename traits::category_of<first_type>::type>::value));
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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reverse_view(Sequence& in_seq)
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: seq(in_seq)
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{}
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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first_type first() const { return fusion::begin(seq); }
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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last_type last() const { return fusion::end(seq); }
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typename mpl::if_<traits::is_view<Sequence>, Sequence, Sequence&>::type seq;
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private:
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// silence MSVC warning C4512: assignment operator could not be generated
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reverse_view& operator= (reverse_view const&);
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};
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}}
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#endif
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