ceph/src/boost/boost/fusion/container/list/nil.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Joel de Guzman
   3     Copyright (c) 2005, 2014 Eric Niebler
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8 #if !defined(FUSION_NIL_04232014_0843)
   9 #define FUSION_NIL_04232014_0843
  10
  11 #include <boost/fusion/support/config.hpp>
  12 #include <boost/fusion/container/list/cons_fwd.hpp>
  13 #include <boost/fusion/support/sequence_base.hpp>
  14 #include <boost/mpl/int.hpp>
  15 #include <boost/mpl/bool.hpp>
  16
  17 namespace boost { namespace fusion
  18 {
  19     struct void_;
  20     struct cons_tag;
  21     struct forward_traversal_tag;
  22     struct fusion_sequence_tag;
  23
  24     struct nil_ : sequence_base<nil_>
  25     {
  26         typedef mpl::int_<0> size;
  27         typedef cons_tag fusion_tag;
  28         typedef fusion_sequence_tag tag; // this gets picked up by MPL
  29         typedef mpl::false_ is_view;
  30         typedef forward_traversal_tag category;
  31         typedef void_ car_type;
  32         typedef void_ cdr_type;
  33
  34         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  35         nil_() BOOST_NOEXCEPT {}
  36
  37         template <typename Iterator>
  38         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  39         nil_(Iterator const& /*iter*/, mpl::true_ /*this_is_an_iterator*/) BOOST_NOEXCEPT
  40         {}
  41
  42         template <typename Iterator>
  43         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  44         void assign_from_iter(Iterator const& /*iter*/) BOOST_NOEXCEPT
  45         {
  46         }
  47     };
  48 }}
  49
  50 #endif
  51