ceph/src/boost/libs/phoenix/include/boost/phoenix/object/new.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_NEW_HPP
   9 #define BOOST_PHOENIX_OBJECT_NEW_HPP
  10
  11 #include <boost/phoenix/core/limits.hpp>
  12 #include <boost/phoenix/core/expression.hpp>
  13 #include <boost/phoenix/core/meta_grammar.hpp>
  14 #include <boost/phoenix/core/call.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/new_expr.hpp>
  21 #else
  22 BOOST_PHOENIX_DEFINE_EXPRESSION_VARARG(
  23     (boost)(phoenix)(new_)
  24   , (proto::terminal<detail::target<proto::_> >)
  25     (meta_grammar)
  26   , _
  27 )
  28 #endif
  29
  30 namespace boost { namespace phoenix
  31 {
  32     struct new_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         {
  41             typedef typename detail::result_of::target<A0> target_type;
  42             typedef typename target_type::type * type;
  43         };
  44
  45         template <typename Target, typename Context>
  46         typename detail::result_of::target<Target>::type *
  47         operator()(Target, Context const &) const
  48         {
  49             return new typename detail::result_of::target<Target>::type;
  50         }
  51
  52         // Bring in the rest
  53         #include <boost/phoenix/object/detail/cpp03/new_eval.hpp>
  54 #else
  55         // TODO:
  56 #endif
  57     };
  58
  59     template <typename Dummy>
  60     struct default_actions::when<rule::new_, Dummy>
  61         : call<new_eval, Dummy>
  62     {};
  63
  64 #if defined(BOOST_PHOENIX_NO_VARIADIC_OBJECT)
  65     template <typename T>
  66     inline
  67     typename expression::new_<detail::target<T> >::type const
  68     new_()
  69     {
  70         return
  71             expression::
  72                 new_<detail::target<T> >::
  73                     make(detail::target<T>());
  74     }
  75
  76     // Bring in the rest
  77     #include <boost/phoenix/object/detail/cpp03/new.hpp>
  78 #else
  79     // TODO:
  80 #endif
  81 }}
  82
  83 #endif
  84