ceph/src/boost/libs/local_function/include/boost/local_function/aux_/member.hpp

   1
   2 // Copyright (C) 2009-2012 Lorenzo Caminiti
   3 // Distributed under the Boost Software License, Version 1.0
   4 // (see accompanying file LICENSE_1_0.txt or a copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6 // Home at http://www.boost.org/libs/local_function
   7
   8 #ifndef BOOST_LOCAL_FUNCTION_AUX_MEMBER_HPP_
   9 #define BOOST_LOCAL_FUNCTION_AUX_MEMBER_HPP_
  10
  11 namespace boost { namespace local_function { namespace aux {
  12
  13 // Metafunctions to manipulate data members.
  14
  15 template<typename T> struct member_type {
  16     typedef T& reference;
  17     typedef T* pointer;
  18 };
  19
  20 template<typename T> struct member_type<T*> {
  21     typedef T*& reference;
  22     typedef T* pointer;
  23 };
  24
  25 template<typename T> struct member_type<T* const> {
  26     typedef T* const& reference;
  27     typedef T* pointer;
  28 };
  29
  30 template<typename T> struct member_type<T const*> {
  31     typedef T const*& reference;
  32     typedef T const* pointer;
  33 };
  34
  35 template<typename T> struct member_type<T const* const> {
  36     typedef T const* const& reference;
  37     typedef T const* pointer;
  38 };
  39
  40 // NOTE: Do not add specializations for T const[&/*] (ambiguous on VACPP).
  41 template<typename T> T* member_addr(T& data) { return &data; }
  42 template<typename T> T* member_addr(T* data) { return data; }
  43
  44 // NOTE: Do not add specializations for T const[&/*] (ambiguous on VACPP).
  45 template<typename T> T& member_deref(T& data) { return data; }
  46 template<typename T> T& member_deref(T* data) { return *data; }
  47
  48 } } } // namespace
  49
  50 #endif // #include guard
  51