1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3#ifndef PASSREFPTR_H
4#define PASSREFPTR_H
5
6template <typename T> class RefPtr;
7
8template <typename T>
9class PassRefPtr {
10public:
11 PassRefPtr() : m_ptr(0) {}
12
13 PassRefPtr(T* ptr)
14 : m_ptr(ptr)
15 {
16 if (m_ptr)
17 m_ptr->ref();
18 }
19
20 PassRefPtr(const PassRefPtr<T>& other)
21 : m_ptr(other.leakRef())
22 {
23 }
24
25 PassRefPtr(const RefPtr<T>& other)
26 : m_ptr(other.get())
27 {
28 if (m_ptr)
29 m_ptr->ref();
30 }
31
32 ~PassRefPtr()
33 {
34 if (m_ptr)
35 m_ptr->deref();
36 }
37
38 T* operator->() const { return m_ptr; }
39
40 T* leakRef() const
41 {
42 T* result = m_ptr;
43 m_ptr = 0;
44 return result;
45 }
46
47private:
48 PassRefPtr<T>& operator=(const PassRefPtr<T>& t);
49
50protected:
51 mutable T* m_ptr;
52};
53
54template <typename T>
55class Ref : public PassRefPtr<T>
56{
57 using PassRefPtr<T>::PassRefPtr;
58
59 template <typename PtrType> friend Ref<PtrType> adoptRef(PtrType*);
60};
61
62template <typename T>
63Ref<T> adoptRef(T* ptr)
64{
65 Ref<T> result;
66 result.m_ptr = ptr;
67 return result;
68}
69
70#endif // PASSREFPTR_H
71

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