boost/container/detail/stored_ref.hpp
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2008-2012. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_CONTAINER_DETAIL_STORED_REF_HPP
#define BOOST_CONTAINER_DETAIL_STORED_REF_HPP
#include "config_begin.hpp"
#include <boost/container/detail/workaround.hpp>
#ifndef BOOST_NO_RVALUE_REFERENCES
namespace boost{
namespace container{
namespace container_detail{
template<class T>
struct stored_ref
{
static T && forward(T &t)
#ifdef BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES
{ return t; }
#else
{ return boost::move(t); }
#endif
};
template<class T>
struct stored_ref<const T>
{
static const T && forward(const T &t)
#ifdef BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES
{ return t; }
#else
{ return static_cast<const T&&>(t); }
#endif
};
template<class T>
struct stored_ref<T&&>
{
static T && forward(T &t)
#ifdef BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES
{ return t; }
#else
{ return boost::move(t); }
#endif
};
template<class T>
struct stored_ref<const T&&>
{
static const T && forward(const T &t)
#ifdef BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES
{ return t; }
#else
{ return static_cast<const T &&>(t); }
#endif
};
template<class T>
struct stored_ref<const T&>
{
static const T & forward(const T &t)
{ return t; }
};
template<class T>
struct stored_ref<T&>
{
static T & forward(T &t)
{ return t; }
};
} //namespace container_detail{
} //namespace container{
} //namespace boost{
#else
#error "This header can be included only for compiler with rvalue references"
#endif //BOOST_NO_RVALUE_REFERENCES
#include <boost/container/detail/config_end.hpp>
#endif //BOOST_CONTAINER_DETAIL_STORED_REF_HPP