You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
102 lines
2.2 KiB
102 lines
2.2 KiB
// 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
|
|
|