1 #ifndef BOOST_SCOPED_PTR_HPP_INCLUDED
2 #define BOOST_SCOPED_PTR_HPP_INCLUDED
4 // (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
5 // Copyright (c) 2001, 2002 Peter Dimov
7 // Permission to copy, use, modify, sell and distribute this software
8 // is granted provided this copyright notice appears in all copies.
9 // This software is provided "as is" without express or implied
10 // warranty, and with no claim as to its suitability for any purpose.
12 // http://www.boost.org/libs/smart_ptr/scoped_ptr.htm
15 #include <boost/assert.hpp>
16 #include <boost/checked_delete.hpp>
17 #include <boost/detail/workaround.hpp>
19 #ifndef BOOST_NO_AUTO_PTR
20 # include <memory> // for std::auto_ptr
28 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
30 void sp_scalar_constructor_hook(void * p);
31 void sp_scalar_destructor_hook(void * p);
35 // scoped_ptr mimics a built-in pointer except that it guarantees deletion
36 // of the object pointed to, either on destruction of the scoped_ptr or via
37 // an explicit reset(). scoped_ptr is a simple solution for simple needs;
38 // use shared_ptr or std::auto_ptr if your needs are more complex.
40 template<class T> class scoped_ptr // noncopyable
46 scoped_ptr(scoped_ptr const &);
47 scoped_ptr & operator=(scoped_ptr const &);
49 typedef scoped_ptr<T> this_type;
53 typedef T element_type;
55 explicit scoped_ptr(T * p = 0): ptr(p) // never throws
57 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
58 boost::sp_scalar_constructor_hook(ptr);
62 #ifndef BOOST_NO_AUTO_PTR
64 explicit scoped_ptr(std::auto_ptr<T> p): ptr(p.release()) // never throws
66 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
67 boost::sp_scalar_constructor_hook(ptr);
73 ~scoped_ptr() // never throws
75 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
76 boost::sp_scalar_destructor_hook(ptr);
78 boost::checked_delete(ptr);
81 void reset(T * p = 0) // never throws
83 BOOST_ASSERT(p == 0 || p != ptr); // catch self-reset errors
84 this_type(p).swap(*this);
87 T & operator*() const // never throws
89 BOOST_ASSERT(ptr != 0);
93 T * operator->() const // never throws
95 BOOST_ASSERT(ptr != 0);
99 T * get() const // never throws
104 // implicit conversion to "bool"
106 #if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
108 operator bool () const
115 typedef T * (this_type::*unspecified_bool_type)() const;
117 operator unspecified_bool_type() const // never throws
119 return ptr == 0? 0: &this_type::get;
124 bool operator! () const // never throws
129 void swap(scoped_ptr & b) // never throws
137 template<class T> inline void swap(scoped_ptr<T> & a, scoped_ptr<T> & b) // never throws
142 // get_pointer(p) is a generic way to say p.get()
144 template<class T> inline T * get_pointer(scoped_ptr<T> const & p)
151 #endif // #ifndef BOOST_SCOPED_PTR_HPP_INCLUDED