Chris@102: /*=============================================================================
Chris@102:     Copyright (c) 2001-2011 Joel de Guzman
Chris@102:     Copyright (c) 2005, 2014 Eric Niebler
Chris@102: 
Chris@102:     Distributed under the Boost Software License, Version 1.0. (See accompanying 
Chris@102:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@102: ==============================================================================*/
Chris@102: #if !defined(FUSION_NIL_04232014_0843)
Chris@102: #define FUSION_NIL_04232014_0843
Chris@102: 
Chris@102: #include <boost/fusion/support/config.hpp>
Chris@102: #include <boost/fusion/container/list/cons_fwd.hpp>
Chris@102: #include <boost/fusion/support/sequence_base.hpp>
Chris@102: #include <boost/mpl/int.hpp>
Chris@102: #include <boost/mpl/bool.hpp>
Chris@102: 
Chris@102: namespace boost { namespace fusion
Chris@102: {
Chris@102:     struct void_;
Chris@102:     struct cons_tag;
Chris@102:     struct forward_traversal_tag;
Chris@102:     struct fusion_sequence_tag;
Chris@102: 
Chris@102:     struct nil_ : sequence_base<nil_>
Chris@102:     {
Chris@102:         typedef mpl::int_<0> size;
Chris@102:         typedef cons_tag fusion_tag;
Chris@102:         typedef fusion_sequence_tag tag; // this gets picked up by MPL
Chris@102:         typedef mpl::false_ is_view;
Chris@102:         typedef forward_traversal_tag category;
Chris@102:         typedef void_ car_type;
Chris@102:         typedef void_ cdr_type;
Chris@102: 
Chris@102:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@102:         nil_() BOOST_NOEXCEPT {}
Chris@102: 
Chris@102:         template <typename Iterator>
Chris@102:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@102:         nil_(Iterator const& /*iter*/, mpl::true_ /*this_is_an_iterator*/) BOOST_NOEXCEPT
Chris@102:         {}
Chris@102: 
Chris@102:         template <typename Iterator>
Chris@102:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@102:         void assign_from_iter(Iterator const& /*iter*/) BOOST_NOEXCEPT
Chris@102:         {
Chris@102:         }
Chris@102:     };
Chris@102: }}
Chris@102: 
Chris@102: #endif
Chris@102: