ceph/src/boost/libs/fusion/include/boost/fusion/container/list/detail/list_to_cons.hpp

   1 /*=============================================================================
   2     Copyright (c) 2014-2015 Kohei Takahashi
   3
   4     Distributed under the Boost Software License, Version 1.0. (See accompanying
   5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 ==============================================================================*/
   7 #ifndef FUSION_LIST_MAIN_10262014_0447
   8 #define FUSION_LIST_MAIN_10262014_0447
   9
  10 #include <boost/config.hpp>
  11 #include <boost/fusion/support/config.hpp>
  12 #include <boost/fusion/container/list/list_fwd.hpp>
  13
  14 ///////////////////////////////////////////////////////////////////////////////
  15 // Without variadics, we will use the PP version
  16 ///////////////////////////////////////////////////////////////////////////////
  17 #if !defined(BOOST_FUSION_HAS_VARIADIC_LIST)
  18 # include <boost/fusion/container/list/detail/cpp03/list_to_cons.hpp>
  19 #else
  20
  21 ///////////////////////////////////////////////////////////////////////////////
  22 // C++11 interface
  23 ///////////////////////////////////////////////////////////////////////////////
  24 #include <boost/fusion/container/list/cons.hpp>
  25 #include <boost/fusion/support/detail/access.hpp>
  26
  27 namespace boost { namespace fusion { namespace detail
  28 {
  29     template <typename ...T>
  30     struct list_to_cons;
  31
  32     template <>
  33     struct list_to_cons<>
  34     {
  35         typedef nil_ type;
  36
  37         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  38         static type call() { return type(); }
  39     };
  40
  41     template <typename Head, typename ...Tail>
  42     struct list_to_cons<Head, Tail...>
  43     {
  44         typedef Head head_type;
  45         typedef list_to_cons<Tail...> tail_list_to_cons;
  46         typedef typename tail_list_to_cons::type tail_type;
  47
  48         typedef cons<head_type, tail_type> type;
  49
  50         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  51         static type
  52         call(typename detail::call_param<Head>::type _h,
  53              typename detail::call_param<Tail>::type ..._t)
  54         {
  55             return type(_h, tail_list_to_cons::call(_t...));
  56         }
  57     };
  58 }}}
  59
  60 #endif
  61 #endif