103 lines
2.2 KiB
C++
103 lines
2.2 KiB
C++
// Copyright (C) 2002 Brad King (brad.king@kitware.com)
|
|
// Douglas Gregor (gregod@cs.rpi.edu)
|
|
//
|
|
// Copyright (C) 2002, 2008 Peter Dimov
|
|
//
|
|
// 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)
|
|
|
|
// For more information, see http://www.boost.org
|
|
|
|
#ifndef BOOST_UTILITY_ADDRESSOF_HPP
|
|
# define BOOST_UTILITY_ADDRESSOF_HPP
|
|
|
|
# include <boost/config.hpp>
|
|
# include <boost/detail/workaround.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
|
|
namespace detail
|
|
{
|
|
|
|
template<class T> struct addr_impl_ref
|
|
{
|
|
T & v_;
|
|
|
|
inline addr_impl_ref( T & v ): v_( v ) {}
|
|
inline operator T& () const { return v_; }
|
|
|
|
private:
|
|
addr_impl_ref & operator=(const addr_impl_ref &);
|
|
};
|
|
|
|
template<class T> struct addressof_impl
|
|
{
|
|
static inline T * f( T & v, long )
|
|
{
|
|
return reinterpret_cast<T*>(
|
|
&const_cast<char&>(reinterpret_cast<const volatile char &>(v)));
|
|
}
|
|
|
|
static inline T * f( T * v, int )
|
|
{
|
|
return v;
|
|
}
|
|
};
|
|
|
|
} // namespace detail
|
|
|
|
template<class T> T * addressof( T & v )
|
|
{
|
|
#if defined( __BORLANDC__ ) && BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT( 0x610 ) )
|
|
|
|
return boost::detail::addressof_impl<T>::f( v, 0 );
|
|
|
|
#else
|
|
|
|
return boost::detail::addressof_impl<T>::f( boost::detail::addr_impl_ref<T>( v ), 0 );
|
|
|
|
#endif
|
|
}
|
|
|
|
#if defined( __SUNPRO_CC ) && BOOST_WORKAROUND( __SUNPRO_CC, BOOST_TESTED_AT( 0x590 ) )
|
|
|
|
namespace detail
|
|
{
|
|
|
|
template<class T> struct addressof_addp
|
|
{
|
|
typedef T * type;
|
|
};
|
|
|
|
} // namespace detail
|
|
|
|
template< class T, std::size_t N >
|
|
typename detail::addressof_addp< T[N] >::type addressof( T (&t)[N] )
|
|
{
|
|
return &t;
|
|
}
|
|
|
|
#endif
|
|
|
|
// Borland doesn't like casting an array reference to a char reference
|
|
// but these overloads work around the problem.
|
|
#if defined( __BORLANDC__ ) && BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
|
|
template<typename T,std::size_t N>
|
|
T (*addressof(T (&t)[N]))[N]
|
|
{
|
|
return reinterpret_cast<T(*)[N]>(&t);
|
|
}
|
|
|
|
template<typename T,std::size_t N>
|
|
const T (*addressof(const T (&t)[N]))[N]
|
|
{
|
|
return reinterpret_cast<const T(*)[N]>(&t);
|
|
}
|
|
#endif
|
|
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_UTILITY_ADDRESSOF_HPP
|