- Cal3D 0.11 API Reference -

refptr.h
1#ifndef CAL_REF_PTR_H
2#define CAL_REF_PTR_H
3
4
5 namespace cal3d
6{
7
9 template<typename T>
10 class RefPtr
11 {
12 public:
13 // For compatibility with Boost.Python.
14 typedef T element_type;
15
16 RefPtr(T* ptr = 0)
17 {
18 m_ptr = 0;
19 *this = ptr;
20 }
21
22 RefPtr(const RefPtr<T>& ptr)
23 {
24 m_ptr = 0;
25 *this = ptr;
26 }
27
28 ~RefPtr()
29 {
30 if (m_ptr)
31 {
32 explicitDecRef(m_ptr);
33 m_ptr = 0;
34 }
35 }
36
37 template<typename U>
38 RefPtr<T>& operator=(U* ptr)
39 {
40 if (ptr != m_ptr)
41 {
42 if (m_ptr)
43 {
44 explicitDecRef(m_ptr);
45 }
46 m_ptr = ptr;
47 if (m_ptr)
48 {
49 explicitIncRef(m_ptr);
50 }
51 }
52 return *this;
53 }
54
55 template<typename U>
56 RefPtr<T>& operator=(const RefPtr<U>& ptr)
57 {
58 *this = ptr.get();
59 return *this;
60 }
61
63 RefPtr<T>& operator=(const RefPtr<T>& ptr)
64 {
65 *this = ptr.get();
66 return *this;
67 }
68
70 bool operator!() const
71 {
72 return !get();
73 }
74
75 T* operator->() const
76 {
77 assert(get() && "Accessing member of null pointer!");
78 return get();
79 }
80
81 T& operator*() const
82 {
83 assert(get() && "Dereferencing null pointer!");
84 return *get();
85 }
86
87 typedef RefPtr<T> this_type;
88
90 typedef T* this_type::*unspecified_bool_type;
91
93 operator unspecified_bool_type() const
94 {
95 return (get() ? &this_type::m_ptr : 0);
96 }
97
98 T* get() const
99 {
100 assert(!m_ptr || m_ptr->getRefCount() > 0 &&
101 "Dereferencing pointer with refCount <= 0");
102 return m_ptr;
103 }
104
105 private:
106 T* m_ptr;
107 };
108
109
110 // For compatibility with Boost.Python.
111 template<class T>
112 T* get_pointer(const RefPtr<T>& p)
113 {
114 return p.get();
115 }
116
117
118 template<typename T, typename U>
119 bool operator==(const RefPtr<T>& a, const RefPtr<U>& b)
120 {
121 return (a.get() == b.get());
122 }
123
124 template<typename T, typename U>
125 bool operator==(const RefPtr<T>& a, const U* b)
126 {
127 return (a.get() == b);
128 }
129
130 template<typename T, typename U>
131 bool operator==(const T* a, const RefPtr<U>& b)
132 {
133 return (a == b.get());
134 }
135
136
137 template<typename T, typename U>
138 bool operator!=(const RefPtr<T>& a, const RefPtr<U>& b)
139 {
140 return (a.get() != b.get());
141 }
142
143 template<typename T, typename U>
144 bool operator!=(const RefPtr<T>& a, const U* b)
145 {
146 return (a.get() != b);
147 }
148
149 template<typename T, typename U>
150 bool operator!=(const T* a, const RefPtr<U>& b)
151 {
152 return (a != b.get());
153 }
154
155
156 template<typename T, typename U>
157 bool operator<(const RefPtr<T>& a, const RefPtr<U>& b)
158 {
159 return (a.get() < b.get());
160 }
161
162 template<typename T, typename U>
163 bool operator<(const RefPtr<T>& a, const U* b)
164 {
165 return (a.get() < b);
166 }
167
168 template<typename T, typename U>
169 bool operator<(const T* a, const RefPtr<U>& b)
170 {
171 return (a < b.get());
172 }
173
174
175}
176
177
178#endif
cal3d::RefPtr
A container-safe smart pointer used for refcounted classes.
Definition refptr.h:11
cal3d::RefPtr< CalCoreAnimation >::unspecified_bool_type
CalCoreAnimation *this_type::* unspecified_bool_type
Definition refptr.h:90
cal3d::RefPtr::operator!
bool operator!() const
Need this to override the built-in operator!
Definition refptr.h:70
cal3d::RefPtr::operator=
RefPtr< T > & operator=(const RefPtr< T > &ptr)
Need this to override the built-in operator=.
Definition refptr.h:63

Generated by The Cal3D Team with Doxygen 1.15.0