ceph/src/boost/boost/fusion/support/detail/as_fusion_element.hpp

   1 /*=============================================================================
   2     Copyright (c) 1999-2003 Jaakko Jarvi
   3     Copyright (c) 2001-2011 Joel de Guzman
   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_AS_FUSION_ELEMENT_05052005_0338)
   9 #define FUSION_AS_FUSION_ELEMENT_05052005_0338
  10
  11 #include <boost/fusion/support/config.hpp>
  12 #include <boost/ref.hpp>
  13
  14 #ifndef BOOST_NO_CXX11_HDR_FUNCTIONAL
  15 #include <functional>
  16 #endif
  17
  18 namespace boost { namespace fusion { namespace detail
  19 {
  20     template <typename T>
  21     struct as_fusion_element
  22     {
  23         typedef T type;
  24     };
  25
  26     template <typename T>
  27     struct as_fusion_element<reference_wrapper<T> >
  28     {
  29         typedef T& type;
  30     };
  31
  32 #ifndef BOOST_NO_CXX11_HDR_FUNCTIONAL
  33     template <typename T>
  34     struct as_fusion_element<std::reference_wrapper<T> >
  35     {
  36         typedef T& type;
  37     };
  38 #endif
  39
  40     template <typename T, int N>
  41     struct as_fusion_element<T[N]>
  42     {
  43         typedef const T(&type)[N];
  44     };
  45
  46     template <typename T, int N>
  47     struct as_fusion_element<volatile T[N]>
  48     {
  49         typedef const volatile T(&type)[N];
  50     };
  51
  52     template <typename T, int N>
  53     struct as_fusion_element<const volatile T[N]>
  54     {
  55         typedef const volatile T(&type)[N];
  56     };
  57
  58 }}}
  59
  60 #endif