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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/smart_ptr/scoped_ptr.hpp
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+#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