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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef PASSREFPTR_H
#define PASSREFPTR_H
template <typename T> class RefPtr;
template <typename T>
class PassRefPtr {
public:
PassRefPtr() : m_ptr(0) {}
PassRefPtr(T* ptr)
: m_ptr(ptr)
{
if (m_ptr)
m_ptr->ref();
}
PassRefPtr(const PassRefPtr<T>& other)
: m_ptr(other.leakRef())
{
}
PassRefPtr(const RefPtr<T>& other)
: m_ptr(other.get())
{
if (m_ptr)
m_ptr->ref();
}
~PassRefPtr()
{
if (m_ptr)
m_ptr->deref();
}
T* operator->() const { return m_ptr; }
T* leakRef() const
{
T* result = m_ptr;
m_ptr = 0;
return result;
}
private:
PassRefPtr<T>& operator=(const PassRefPtr<T>& t);
protected:
mutable T* m_ptr;
};
template <typename T>
class Ref : public PassRefPtr<T>
{
using PassRefPtr<T>::PassRefPtr;
template <typename PtrType> friend Ref<PtrType> adoptRef(PtrType*);
};
template <typename T>
Ref<T> adoptRef(T* ptr)
{
Ref<T> result;
result.m_ptr = ptr;
return result;
}
#endif // PASSREFPTR_H
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