ceph/src/boost/boost/phoenix/object/construct.hpp

   1 /*==============================================================================
   2     Copyright (c) 2001-2010 Joel de Guzman
   3     Copyright (c) 2010 Thomas Heller
   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 #ifndef BOOST_PHOENIX_OBJECT_CONSTRUCT_HPP
   9 #define BOOST_PHOENIX_OBJECT_CONSTRUCT_HPP
  10
  11 #include <boost/phoenix/core/limits.hpp>
  12 #include <boost/phoenix/core/call.hpp>
  13 #include <boost/phoenix/core/expression.hpp>
  14 #include <boost/phoenix/core/meta_grammar.hpp>
  15 #include <boost/phoenix/object/detail/target.hpp>
  16 #include <boost/phoenix/support/iterate.hpp>
  17 #include <boost/preprocessor/repetition/repeat_from_to.hpp>
  18
  19 #ifdef BOOST_PHOENIX_NO_VARIADIC_EXPRESSION
  20 #   include <boost/phoenix/object/detail/cpp03/construct_expr.hpp>
  21 #else
  22 BOOST_PHOENIX_DEFINE_EXPRESSION_VARARG(
  23     (boost)(phoenix)(construct)
  24   , (proto::terminal<detail::target<proto::_> >)
  25     (meta_grammar)
  26   , _
  27 )
  28 #endif
  29
  30 namespace boost { namespace phoenix
  31 {
  32     struct construct_eval
  33     {
  34         template <typename Sig>
  35         struct result;
  36
  37 #if defined(BOOST_PHOENIX_NO_VARIADIC_OBJECT)
  38         template <typename This, typename A0, typename Context>
  39         struct result<This(A0, Context)>
  40             : detail::result_of::target<A0>
  41         {
  42         };
  43
  44         template <typename Target, typename Context>
  45         typename detail::result_of::target<Target>::type
  46         operator()(Target, Context const &) const
  47         {
  48             return typename detail::result_of::target<Target>::type();
  49         }
  50
  51         // Bring in the rest
  52         #include <boost/phoenix/object/detail/cpp03/construct_eval.hpp>
  53 #else
  54         // TODO:
  55 #endif
  56     };
  57
  58     template <typename Dummy>
  59     struct default_actions::when<rule::construct, Dummy>
  60         : call<construct_eval, Dummy>
  61     {};
  62
  63 #if defined(BOOST_PHOENIX_NO_VARIADIC_OBJECT)
  64     template <typename T>
  65     inline
  66     typename expression::construct<detail::target<T> >::type const
  67     construct()
  68     {
  69         return
  70             expression::
  71                 construct<detail::target<T> >::
  72                     make(detail::target<T>());
  73     }
  74
  75     // Bring in the rest
  76     #include <boost/phoenix/object/detail/cpp03/construct.hpp>
  77 #else
  78     // TODO:
  79 #endif
  80 }}
  81
  82 #endif
  83