/*=============================================================================
    Copyright (c) 2001-2011 Joel de Guzman
    Copyright (c) 2005, 2014 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(FUSION_NIL_04232014_0843)
#define FUSION_NIL_04232014_0843

#include <boost/fusion/support/config.hpp>
#include <boost/fusion/container/list/cons_fwd.hpp>
#include <boost/fusion/support/sequence_base.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/bool.hpp>

namespace boost {
namespace fusion {
struct void_;
struct cons_tag;
struct forward_traversal_tag;
struct fusion_sequence_tag;

struct nil_ : sequence_base<nil_>
{
    typedef mpl::int_<0> size;
    typedef cons_tag fusion_tag;
    typedef fusion_sequence_tag tag; // this gets picked up by MPL
    typedef mpl::false_ is_view;
    typedef forward_traversal_tag category;
    typedef void_ car_type;
    typedef void_ cdr_type;

    BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
    nil_() BOOST_NOEXCEPT {}

    template <typename Iterator>
    BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
    nil_(Iterator const& /*iter*/, mpl::true_ /*this_is_an_iterator*/) BOOST_NOEXCEPT
    {}

    template <typename Iterator>
    BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
    void
    assign_from_iter(Iterator const& /*iter*/) BOOST_NOEXCEPT
    {
    }
};
}
}

#endif
