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 // See http://www.boost.org/libs/smart_ptr/scoped_ptr.htm for documentation.
15 #include <boost/assert.hpp>
16 #include <boost/checked_delete.hpp>
18 #ifndef BOOST_NO_AUTO_PTR
19 # include <memory> // for std::auto_ptr
25 // scoped_ptr mimics a built-in pointer except that it guarantees deletion
26 // of the object pointed to, either on destruction of the scoped_ptr or via
27 // an explicit reset(). scoped_ptr is a simple solution for simple needs;
28 // use shared_ptr or std::auto_ptr if your needs are more complex.
30 template<typename T> class scoped_ptr // noncopyable
36 scoped_ptr(scoped_ptr const &);
37 scoped_ptr & operator=(scoped_ptr const &);
39 typedef scoped_ptr<T> this_type;
43 typedef T element_type;
45 explicit scoped_ptr(T * p = 0): ptr(p) // never throws
49 #ifndef BOOST_NO_AUTO_PTR
51 explicit scoped_ptr(std::auto_ptr<T> p): ptr(p.release()) // never throws
57 ~scoped_ptr() // never throws
62 void reset(T * p = 0) // never throws
66 this_type(p).swap(*this);
70 T & operator*() const // never throws
72 BOOST_ASSERT(ptr != 0);
76 T * operator->() const // never throws
78 BOOST_ASSERT(ptr != 0);
82 T * get() const // never throws
87 // implicit conversion to "bool"
89 typedef T * (this_type::*unspecified_bool_type)() const;
91 operator unspecified_bool_type() const // never throws
93 return ptr == 0? 0: &this_type::get;
96 bool operator! () const // never throws
101 void swap(scoped_ptr & b) // never throws
109 template<typename T> inline void swap(scoped_ptr<T> & a, scoped_ptr<T> & b) // never throws
114 // get_pointer(p) is a generic way to say p.get()
116 template<typename T> inline T * get_pointer(scoped_ptr<T> const & p)
123 #endif // #ifndef BOOST_SCOPED_PTR_HPP_INCLUDED