boost/fusion/container/list/detail/list_to_cons.hpp

   1 /*=============================================================================
   2     Copyright (c) 2005 Joel de Guzman
   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 #if !defined(FUSION_LIST_TO_CONS_07172005_1041)
   8 #define FUSION_LIST_TO_CONS_07172005_1041
   9
  10 #include <boost/fusion/container/list/cons.hpp>
  11 #include <boost/fusion/container/list/limits.hpp>
  12 #include <boost/preprocessor/repetition/enum.hpp>
  13 #include <boost/preprocessor/repetition/enum_params.hpp>
  14 #include <boost/preprocessor/repetition/enum_shifted_params.hpp>
  15 #include <boost/preprocessor/arithmetic/dec.hpp>
  16
  17 #define FUSION_VOID(z, n, _) void_
  18
  19 namespace boost { namespace fusion
  20 {
  21     struct nil;
  22     struct void_;
  23 }}
  24
  25 namespace boost { namespace fusion { namespace detail
  26 {
  27     template <BOOST_PP_ENUM_PARAMS(FUSION_MAX_LIST_SIZE, typename T)>
  28     struct list_to_cons
  29     {
  30         typedef T0 head_type;
  31         typedef list_to_cons<
  32             BOOST_PP_ENUM_SHIFTED_PARAMS(FUSION_MAX_LIST_SIZE, T), void_>
  33         tail_list_to_cons;
  34         typedef typename tail_list_to_cons::type tail_type;
  35
  36         typedef cons<head_type, tail_type> type;
  37
  38         #include <boost/fusion/container/list/detail/list_to_cons_call.hpp>
  39     };
  40
  41     template <>
  42     struct list_to_cons<BOOST_PP_ENUM(FUSION_MAX_LIST_SIZE, FUSION_VOID, _)>
  43     {
  44         typedef nil type;
  45     };
  46 }}}
  47
  48 #undef FUSION_VOID
  49 #endif