Claw  1.7.3
smart_ptr.hpp
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1 /*
2  CLAW - a C++ Library Absolutely Wonderful
3 
4  CLAW is a free library without any particular aim but being useful to
5  anyone.
6 
7  Copyright (C) 2005-2011 Julien Jorge
8 
9  This library is free software; you can redistribute it and/or
10  modify it under the terms of the GNU Lesser General Public
11  License as published by the Free Software Foundation; either
12  version 2.1 of the License, or (at your option) any later version.
13 
14  This library is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  Lesser General Public License for more details.
18 
19  You should have received a copy of the GNU Lesser General Public
20  License along with this library; if not, write to the Free Software
21  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 
23  contact: julien.jorge@gamned.org
24 */
31 #ifndef __CLAW_SMART_PTR_HPP__
32 #define __CLAW_SMART_PTR_HPP__
33 
34 namespace claw
35 {
36  namespace memory
37  {
50  template<typename T>
51  class smart_ptr
52  {
53  public:
55  typedef T value_type;
56 
59 
61  typedef T& reference;
62 
64  typedef T* pointer;
65 
67  typedef const T& const_reference;
68 
70  typedef const T* const const_pointer;
71 
72  public:
73  smart_ptr();
74  smart_ptr( pointer data );
75  smart_ptr( const self_type& that );
76  ~smart_ptr();
77 
78  self_type& operator=( const self_type& that );
79 
80  bool operator==( const self_type& that ) const;
81  bool operator!=( const self_type& that ) const;
82  bool operator<( const self_type& that ) const;
83  bool operator<=( const self_type& that ) const;
84  bool operator>( const self_type& that ) const;
85  bool operator>=( const self_type& that ) const;
86 
88  pointer operator->() const;
90  reference operator*() const;
91 
92  private:
93  void copy( const self_type& that );
94  void release();
95 
96  private:
98  unsigned int* m_ref_count;
99 
101  pointer m_ptr;
102 
103  }; // class smart_ptr
104  } // namespace memory
105 } // namespace claw
106 
107 #include <claw/impl/smart_ptr.tpp>
108 
109 #endif // __CLAW_SMART_PTR_HPP__
smart_ptr()
Default constructor.
Definition: smart_ptr.tpp:38
T * pointer
Pointer on the type of the stored data.
Definition: smart_ptr.hpp:64
smart_ptr< value_type > self_type
The type of the current class.
Definition: smart_ptr.hpp:58
T value_type
The type of the pointed data.
Definition: smart_ptr.hpp:55
bool operator<(const self_type &that) const
"Less than" operator.
Definition: smart_ptr.tpp:137
const T & const_reference
Constant reference on the type of the stored data.
Definition: smart_ptr.hpp:67
pointer operator->()
Dereference operator.
Definition: smart_ptr.tpp:184
~smart_ptr()
Destructor. The memory is freed only if no more smart_ptr point on it.
Definition: smart_ptr.tpp:82
bool operator>(const self_type &that) const
"Greater than" operator.
Definition: smart_ptr.tpp:161
const T *const const_pointer
Constant pointer on the type of the stored data.
Definition: smart_ptr.hpp:70
Implementation of the claw::memory::smart_ptr class.
A pointer with a reference counter.
Definition: smart_ptr.hpp:51
T & reference
Reference on the type of the stored data.
Definition: smart_ptr.hpp:61
bool operator>=(const self_type &that) const
"Greater or equal" operator.
Definition: smart_ptr.tpp:173
bool operator==(const self_type &that) const
Equality operator.
Definition: smart_ptr.tpp:112
bool operator<=(const self_type &that) const
"Less or equal" operator.
Definition: smart_ptr.tpp:149
self_type & operator=(const self_type &that)
Assignment operator.
Definition: smart_ptr.tpp:94
bool operator!=(const self_type &that) const
Disequality operator.
Definition: smart_ptr.tpp:124
reference operator*()
Dereference operator.
Definition: smart_ptr.tpp:206