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/*=============================================================================
    Copyright (c) 2009 Hartmut Kaiser

    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(BOOST_FUSION_NVIEW_ITERATOR_SEP_23_2009_0948PM)
#define BOOST_FUSION_NVIEW_ITERATOR_SEP_23_2009_0948PM

#include <boost/fusion/support/config.hpp>
#include <boost/fusion/support/iterator_base.hpp>
#include <boost/fusion/support/category_of.hpp>
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/sequence/intrinsic/end.hpp>

#include <boost/fusion/view/nview/detail/size_impl.hpp>
#include <boost/fusion/view/nview/detail/begin_impl.hpp>
#include <boost/fusion/view/nview/detail/end_impl.hpp>
#include <boost/fusion/view/nview/detail/deref_impl.hpp>
#include <boost/fusion/view/nview/detail/value_of_impl.hpp>
#include <boost/fusion/view/nview/detail/next_impl.hpp>
#include <boost/fusion/view/nview/detail/prior_impl.hpp>
#include <boost/fusion/view/nview/detail/at_impl.hpp>
#include <boost/fusion/view/nview/detail/value_at_impl.hpp>
#include <boost/fusion/view/nview/detail/advance_impl.hpp>
#include <boost/fusion/view/nview/detail/distance_impl.hpp>
#include <boost/fusion/view/nview/detail/equal_to_impl.hpp>

namespace boost { namespace fusion
{
    struct nview_iterator_tag;
    struct random_access_traversal_tag;

    template<typename Sequence, typename Pos>
    struct nview_iterator
      : iterator_base<nview_iterator<Sequence, Pos> >
    {
        typedef nview_iterator_tag fusion_tag;
        typedef random_access_traversal_tag category;

        typedef Sequence sequence_type;
        typedef Pos first_type;

        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
        explicit nview_iterator(Sequence& in_seq)
          : seq(in_seq) {}

        Sequence& seq;

    private:
        // silence MSVC warning C4512: assignment operator could not be generated
        nview_iterator& operator= (nview_iterator const&);
    };

}}

#ifdef BOOST_FUSION_WORKAROUND_FOR_LWG_2408
namespace std
{
    template <typename Sequence, typename Pos>
    struct iterator_traits< ::boost::fusion::nview_iterator<Sequence, Pos> >
    { };
}
#endif

#endif