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pointer.h
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41 
47 #ifndef CCXX_POINTER_H_
48 #define CCXX_POINTER_H_
49 
50 #ifndef CCXX_MISSING_H_
51 #include <cc++/missing.h>
52 #endif
53 
54 #ifdef CCXX_NAMESPACES
55 namespace ost {
56 #endif
57 
64 template <class T>
65 class Pointer
66 {
67 protected:
68  unsigned *ptrCount;
70 
71  void ptrDetach(void)
72  {
73  if(ptrCount && --(*ptrCount)==0) {
74  delete ptrObject;
75  delete ptrCount;
76  }
77  ptrObject = NULL;
78  ptrCount = NULL;
79  }
80 
81 public:
82  explicit Pointer(T* ptr = NULL) : ptrObject(ptr)
83  {
84  ptrCount = new unsigned;
85  *ptrCount = 1;
86  }
87 
88  Pointer(const Pointer<T> &ref)
89  {
90  ptrObject = ref.ptrObject;
91  ptrCount = ref.ptrCount;
92  ++(*ptrCount);
93  }
94 
95  inline virtual ~Pointer()
96  {ptrDetach();}
97 
98 
100  {
101  if(this != &ref) {
102  ptrDetach();
103  ptrObject = ref.ptrObject;
104  ptrCount = ref.ptrCount;
105  ++(*ptrCount);
106  }
107  return *this;
108  }
109 
110  inline T& operator*() const
111  {return *ptrObject;};
112 
113  inline T* getObject() const
114  {return ptrObject;};
115 
116  inline T* operator->() const
117  {return ptrObject;};
118 
119  inline bool operator!() const
120  {return (*ptrCount == 1);};
121 
122  inline int operator++() const
123  {return ++(*ptrCount);};
124 
125  int operator--() const
126  {
127  if(*ptrCount == 1) {
128  delete this;
129  return 0;
130  }
131  return --(*ptrCount);
132  }
133 };
134 
135 #ifdef CCXX_NAMESPACES
136 }
137 #endif
138 
139 #endif
int operator--() const
Definition: pointer.h:125
Pointer & operator=(const Pointer< T > &ref)
Definition: pointer.h:99
substitute functions which may be missing in target platform libc.
T & operator*() const
Definition: pointer.h:110
int operator++() const
Definition: pointer.h:122
bool operator!() const
Definition: pointer.h:119
Pointer(T *ptr=NULL)
Definition: pointer.h:82
T * getObject() const
Definition: pointer.h:113
T * ptrObject
Definition: pointer.h:69
Pointer(const Pointer< T > &ref)
Definition: pointer.h:88
Used to create and manage referece counted pointers.
Definition: pointer.h:65
T * operator->() const
Definition: pointer.h:116
virtual ~Pointer()
Definition: pointer.h:95
void ptrDetach(void)
Definition: pointer.h:71
unsigned * ptrCount
Definition: pointer.h:68