// 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