ceph/src/boost/libs/intrusive/include/boost/intrusive/detail/uncast.hpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga  2006-2014
   4 //
   5 // Distributed under the Boost Software License, Version 1.0.
   6 //    (See accompanying file LICENSE_1_0.txt or copy at
   7 //          http://www.boost.org/LICENSE_1_0.txt)
   8 //
   9 // See http://www.boost.org/libs/intrusive for documentation.
  10 //
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef BOOST_INTRUSIVE_DETAIL_UNCAST_HPP
  14 #define BOOST_INTRUSIVE_DETAIL_UNCAST_HPP
  15
  16 #ifndef BOOST_CONFIG_HPP
  17 #  include <boost/config.hpp>
  18 #endif
  19
  20 #if defined(BOOST_HAS_PRAGMA_ONCE)
  21 #  pragma once
  22 #endif
  23
  24 #include <boost/intrusive/detail/config_begin.hpp>
  25 #include <boost/intrusive/pointer_traits.hpp>
  26 #include <boost/intrusive/detail/mpl.hpp>
  27
  28 namespace boost {
  29 namespace intrusive {
  30 namespace detail {
  31
  32 template<class ConstNodePtr>
  33 struct uncast_types
  34 {
  35    typedef typename pointer_traits<ConstNodePtr>::element_type element_type;
  36    typedef typename remove_const<element_type>::type           non_const_type;
  37    typedef typename pointer_traits<ConstNodePtr>::
  38       template rebind_pointer<non_const_type>::type            non_const_pointer;
  39    typedef pointer_traits<non_const_pointer>                   non_const_traits;
  40 };
  41
  42 template<class ConstNodePtr>
  43 static typename uncast_types<ConstNodePtr>::non_const_pointer
  44    uncast(const ConstNodePtr & ptr)
  45 {
  46    return uncast_types<ConstNodePtr>::non_const_traits::const_cast_from(ptr);
  47 }
  48
  49 } //namespace detail {
  50 } //namespace intrusive
  51 } //namespace boost
  52
  53 #include <boost/intrusive/detail/config_end.hpp>
  54
  55 #endif //BOOST_INTRUSIVE_DETAIL_UTILITIES_HPP