#ifndef BOOST_SMART_PTR_SCOPED_PTR_HPP_INCLUDED #define BOOST_SMART_PTR_SCOPED_PTR_HPP_INCLUDED // (C) Copyright Greg Colvin and Beman Dawes 1998, 1999. // Copyright (c) 2001, 2002 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) // // http://www.boost.org/libs/smart_ptr/scoped_ptr.htm // #include <boost/assert.hpp> #include <boost/checked_delete.hpp> #include <boost/detail/workaround.hpp> #ifndef BOOST_NO_AUTO_PTR # include <memory> // for std::auto_ptr #endif namespace boost { // Debug hooks #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) void sp_scalar_constructor_hook(void * p); void sp_scalar_destructor_hook(void * p); #endif // scoped_ptr mimics a built-in pointer except that it guarantees deletion // of the object pointed to, either on destruction of the scoped_ptr or via // an explicit reset(). scoped_ptr is a simple solution for simple needs; // use shared_ptr or std::auto_ptr if your needs are more complex. template<class T> class scoped_ptr // noncopyable { private: T * px; scoped_ptr(scoped_ptr const &); scoped_ptr & operator=(scoped_ptr const &); typedef scoped_ptr<T> this_type; void operator==( scoped_ptr const& ) const; void operator!=( scoped_ptr const& ) const; public: typedef T element_type; explicit scoped_ptr( T * p = 0 ): px( p ) // never throws { #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) boost::sp_scalar_constructor_hook( px ); #endif } #ifndef BOOST_NO_AUTO_PTR explicit scoped_ptr( std::auto_ptr<T> p ): px( p.release() ) // never throws { #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) boost::sp_scalar_constructor_hook( px ); #endif } #endif ~scoped_ptr() // never throws { #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) boost::sp_scalar_destructor_hook( px ); #endif boost::checked_delete( px ); } void reset(T * p = 0) // never throws { BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors this_type(p).swap(*this); } T & operator*() const // never throws { BOOST_ASSERT( px != 0 ); return *px; } T * operator->() const // never throws { BOOST_ASSERT( px != 0 ); return px; } T * get() const // never throws { return px; } // implicit conversion to "bool" #include <boost/smart_ptr/detail/operator_bool.hpp> void swap(scoped_ptr & b) // never throws { T * tmp = b.px; b.px = px; px = tmp; } }; template<class T> inline void swap(scoped_ptr<T> & a, scoped_ptr<T> & b) // never throws { a.swap(b); } // get_pointer(p) is a generic way to say p.get() template<class T> inline T * get_pointer(scoped_ptr<T> const & p) { return p.get(); } } // namespace boost #endif // #ifndef BOOST_SMART_PTR_SCOPED_PTR_HPP_INCLUDED