/*=============================================================================
    Copyright (c) 2001-2011 Joel de Guzman
    Copyright (c) 2011 Eric Niebler

    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_SINGLE_VIEW_05052005_0335)
#define BOOST_FUSION_SINGLE_VIEW_05052005_0335

#include <boost/fusion/support/config.hpp>
#include <boost/fusion/support/detail/access.hpp>
#include <boost/fusion/support/detail/as_fusion_element.hpp>
#include <boost/fusion/support/sequence_base.hpp>
#include <boost/fusion/view/single_view/single_view_iterator.hpp>
#include <boost/fusion/view/single_view/detail/at_impl.hpp>
#include <boost/fusion/view/single_view/detail/begin_impl.hpp>
#include <boost/fusion/view/single_view/detail/end_impl.hpp>
#include <boost/fusion/view/single_view/detail/size_impl.hpp>
#include <boost/fusion/view/single_view/detail/value_at_impl.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/int.hpp>
#include <boost/config.hpp>

#if defined (BOOST_MSVC)
#  pragma warning(push)
#  pragma warning (disable: 4512) // assignment operator could not be generated.
#endif

namespace boost {
namespace fusion {
struct single_view_tag;
struct random_access_traversal_tag;
struct fusion_sequence_tag;

template <typename T>
struct single_view : sequence_base<single_view<T> >
{
    typedef single_view_tag fusion_tag;
    typedef fusion_sequence_tag tag; // this gets picked up by MPL
    typedef random_access_traversal_tag category;
    typedef mpl::true_ is_view;
    typedef mpl::int_<1> size;
    typedef T value_type;

    BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
    single_view()
        : val() {}

    BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
    explicit
    single_view(typename detail::call_param<T>::type in_val)
        : val(in_val) {}

    value_type val;
};

template <typename T>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
inline single_view<typename detail::as_fusion_element<T>::type>
make_single_view(T const& v)
{
    return single_view<typename detail::as_fusion_element<T>::type>(v);
}
}
}

#if defined (BOOST_MSVC)
#  pragma warning(pop)
#endif

#endif
