| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (C) Copyright Ion Gaztanaga 2005. |
| // 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) |
| // |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| #ifndef BOOST_POINTER_CAST_HPP |
| #define BOOST_POINTER_CAST_HPP |
| |
| #include <boost/config.hpp> |
| #include <boost/smart_ptr/detail/sp_noexcept.hpp> |
| |
| namespace boost { |
| |
| //static_pointer_cast overload for raw pointers |
| template<class T, class U> |
| inline T* static_pointer_cast(U *ptr) BOOST_SP_NOEXCEPT |
| { |
| return static_cast<T*>(ptr); |
| } |
| |
| //dynamic_pointer_cast overload for raw pointers |
| template<class T, class U> |
| inline T* dynamic_pointer_cast(U *ptr) BOOST_SP_NOEXCEPT |
| { |
| return dynamic_cast<T*>(ptr); |
| } |
| |
| //const_pointer_cast overload for raw pointers |
| template<class T, class U> |
| inline T* const_pointer_cast(U *ptr) BOOST_SP_NOEXCEPT |
| { |
| return const_cast<T*>(ptr); |
| } |
| |
| //reinterpret_pointer_cast overload for raw pointers |
| template<class T, class U> |
| inline T* reinterpret_pointer_cast(U *ptr) BOOST_SP_NOEXCEPT |
| { |
| return reinterpret_cast<T*>(ptr); |
| } |
| |
| } // namespace boost |
| |
| #if !defined( BOOST_NO_CXX11_SMART_PTR ) |
| |
| #include <boost/type_traits/has_virtual_destructor.hpp> |
| #include <boost/static_assert.hpp> |
| #include <memory> |
| |
| namespace boost { |
| |
| //static_pointer_cast overload for std::shared_ptr |
| using std::static_pointer_cast; |
| |
| //dynamic_pointer_cast overload for std::shared_ptr |
| using std::dynamic_pointer_cast; |
| |
| //const_pointer_cast overload for std::shared_ptr |
| using std::const_pointer_cast; |
| |
| //reinterpret_pointer_cast overload for std::shared_ptr |
| template<class T, class U> std::shared_ptr<T> reinterpret_pointer_cast(const std::shared_ptr<U> & r ) BOOST_SP_NOEXCEPT |
| { |
| (void) reinterpret_cast< T* >( static_cast< U* >( 0 ) ); |
| |
| typedef typename std::shared_ptr<T>::element_type E; |
| |
| E * p = reinterpret_cast< E* >( r.get() ); |
| return std::shared_ptr<T>( r, p ); |
| } |
| |
| //static_pointer_cast overload for std::unique_ptr |
| template<class T, class U> std::unique_ptr<T> static_pointer_cast( std::unique_ptr<U> && r ) BOOST_SP_NOEXCEPT |
| { |
| (void) static_cast< T* >( static_cast< U* >( 0 ) ); |
| |
| typedef typename std::unique_ptr<T>::element_type E; |
| |
| return std::unique_ptr<T>( static_cast<E*>( r.release() ) ); |
| } |
| |
| //dynamic_pointer_cast overload for std::unique_ptr |
| template<class T, class U> std::unique_ptr<T> dynamic_pointer_cast( std::unique_ptr<U> && r ) BOOST_SP_NOEXCEPT |
| { |
| (void) dynamic_cast< T* >( static_cast< U* >( 0 ) ); |
| |
| BOOST_STATIC_ASSERT_MSG( boost::has_virtual_destructor<T>::value, "The target of dynamic_pointer_cast must have a virtual destructor." ); |
| |
| T * p = dynamic_cast<T*>( r.get() ); |
| if( p ) r.release(); |
| return std::unique_ptr<T>( p ); |
| } |
| |
| //const_pointer_cast overload for std::unique_ptr |
| template<class T, class U> std::unique_ptr<T> const_pointer_cast( std::unique_ptr<U> && r ) BOOST_SP_NOEXCEPT |
| { |
| (void) const_cast< T* >( static_cast< U* >( 0 ) ); |
| |
| typedef typename std::unique_ptr<T>::element_type E; |
| |
| return std::unique_ptr<T>( const_cast<E*>( r.release() ) ); |
| } |
| |
| //reinterpret_pointer_cast overload for std::unique_ptr |
| template<class T, class U> std::unique_ptr<T> reinterpret_pointer_cast( std::unique_ptr<U> && r ) BOOST_SP_NOEXCEPT |
| { |
| (void) reinterpret_cast< T* >( static_cast< U* >( 0 ) ); |
| |
| typedef typename std::unique_ptr<T>::element_type E; |
| |
| return std::unique_ptr<T>( reinterpret_cast<E*>( r.release() ) ); |
| } |
| |
| } // namespace boost |
| |
| #endif // #if !defined( BOOST_NO_CXX11_SMART_PTR ) |
| |
| #endif //BOOST_POINTER_CAST_HPP |