| // Copyright (C) 2002 Brad King (brad.king@kitware.com) |
| // Douglas Gregor (gregod@cs.rpi.edu) |
| // |
| // Copyright (C) 2002, 2008, 2013 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_CORE_ADDRESSOF_HPP |
| #define BOOST_CORE_ADDRESSOF_HPP |
| |
| # include <boost/config.hpp> |
| # include <boost/detail/workaround.hpp> |
| # include <cstddef> |
| |
| namespace boost |
| { |
| |
| namespace detail |
| { |
| |
| template<class T> struct addr_impl_ref |
| { |
| T & v_; |
| |
| BOOST_FORCEINLINE addr_impl_ref( T & v ): v_( v ) {} |
| BOOST_FORCEINLINE operator T& () const { return v_; } |
| |
| private: |
| addr_impl_ref & operator=(const addr_impl_ref &); |
| }; |
| |
| template<class T> struct addressof_impl |
| { |
| static BOOST_FORCEINLINE T * f( T & v, long ) |
| { |
| return reinterpret_cast<T*>( |
| &const_cast<char&>(reinterpret_cast<const volatile char &>(v))); |
| } |
| |
| static BOOST_FORCEINLINE T * f( T * v, int ) |
| { |
| return v; |
| } |
| }; |
| |
| #if !defined( BOOST_NO_CXX11_NULLPTR ) |
| |
| #if !defined( BOOST_NO_CXX11_DECLTYPE ) && ( ( defined( __clang__ ) && !defined( _LIBCPP_VERSION ) ) || defined( __INTEL_COMPILER ) ) |
| |
| typedef decltype(nullptr) addr_nullptr_t; |
| |
| #else |
| |
| typedef std::nullptr_t addr_nullptr_t; |
| |
| #endif |
| |
| template<> struct addressof_impl< addr_nullptr_t > |
| { |
| typedef addr_nullptr_t T; |
| |
| static BOOST_FORCEINLINE T * f( T & v, int ) |
| { |
| return &v; |
| } |
| }; |
| |
| template<> struct addressof_impl< addr_nullptr_t const > |
| { |
| typedef addr_nullptr_t const T; |
| |
| static BOOST_FORCEINLINE T * f( T & v, int ) |
| { |
| return &v; |
| } |
| }; |
| |
| template<> struct addressof_impl< addr_nullptr_t volatile > |
| { |
| typedef addr_nullptr_t volatile T; |
| |
| static BOOST_FORCEINLINE T * f( T & v, int ) |
| { |
| return &v; |
| } |
| }; |
| |
| template<> struct addressof_impl< addr_nullptr_t const volatile > |
| { |
| typedef addr_nullptr_t const volatile T; |
| |
| static BOOST_FORCEINLINE T * f( T & v, int ) |
| { |
| return &v; |
| } |
| }; |
| |
| #endif |
| |
| } // namespace detail |
| |
| template<class T> |
| BOOST_FORCEINLINE |
| T * addressof( T & v ) |
| { |
| #if (defined( __BORLANDC__ ) && BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT( 0x610 ) ) ) || defined( __SUNPRO_CC ) |
| |
| 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 > |
| BOOST_FORCEINLINE |
| 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> |
| BOOST_FORCEINLINE |
| T (*addressof(T (&t)[N]))[N] |
| { |
| return reinterpret_cast<T(*)[N]>(&t); |
| } |
| |
| template<typename T,std::size_t N> |
| BOOST_FORCEINLINE |
| const T (*addressof(const T (&t)[N]))[N] |
| { |
| return reinterpret_cast<const T(*)[N]>(&t); |
| } |
| #endif |
| |
| } // namespace boost |
| |
| #endif // BOOST_CORE_ADDRESSOF_HPP |