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39#ifndef REFPTR_H
40#define REFPTR_H
41
42#include "PassRefPtr.h"
43
44template <typename T>
45class RefPtr {
46public:
47 RefPtr() : m_ptr(0) {}
48 RefPtr(const RefPtr<T> &other)
49 : m_ptr(other.m_ptr)
50 {
51 if (m_ptr)
52 m_ptr->ref();
53 }
54
55 RefPtr<T>& operator=(const RefPtr<T>& other)
56 {
57 if (other.m_ptr)
58 other.m_ptr->ref();
59 if (m_ptr)
60 m_ptr->deref();
61 m_ptr = other.m_ptr;
62 return *this;
63 }
64
65 RefPtr(const PassRefPtr<T>& other)
66 : m_ptr(other.leakRef())
67 {
68 }
69
70 ~RefPtr()
71 {
72 if (m_ptr)
73 m_ptr->deref();
74 }
75
76 T* operator->() const { return m_ptr; }
77 T* get() const { return m_ptr; }
78 bool operator!() const { return !m_ptr; }
79
80 PassRefPtr<T> release()
81 {
82 T* ptr = m_ptr;
83 m_ptr = 0;
84 return adoptRef(ptr);
85 }
86
87private:
88 T* m_ptr;
89};
90
91#endif // REFPTR_H
92

source code of qtdeclarative/src/3rdparty/masm/stubs/wtf/RefPtr.h