/usr/include/KF5/wtf/RefPtr.h is in libkf5kjs-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef WTF_RefPtr_h
#define WTF_RefPtr_h
#include <algorithm>
#include <wtf/AlwaysInline.h>
#include <wtf/PassRefPtr.h>
namespace WTF
{
enum PlacementNewAdoptType { PlacementNewAdopt };
template <typename T> class PassRefPtr;
enum HashTableDeletedValueType { HashTableDeletedValue };
template <typename T> class RefPtr
{
public:
RefPtr() : m_ptr(0) { }
RefPtr(T *ptr) : m_ptr(ptr)
{
if (ptr) {
ptr->ref();
}
}
RefPtr(const RefPtr &o) : m_ptr(o.m_ptr)
{
if (T *ptr = m_ptr) {
ptr->ref();
}
}
// see comment in PassRefPtr.h for why this takes const reference
template <typename U> RefPtr(const PassRefPtr<U> &);
// Special constructor for cases where we overwrite an object in place.
RefPtr(PlacementNewAdoptType) { }
// Hash table deleted values, which are only constructed and never copied or destroyed.
RefPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) { }
bool isHashTableDeletedValue() const
{
return m_ptr == hashTableDeletedValue();
}
~RefPtr()
{
if (T *ptr = m_ptr) {
ptr->deref();
}
}
template <typename U> RefPtr(const RefPtr<U> &o) : m_ptr(o.get())
{
if (T *ptr = m_ptr) {
ptr->ref();
}
}
T *get() const
{
return m_ptr;
}
void clear()
{
if (T *ptr = m_ptr) {
ptr->deref();
} m_ptr = 0;
}
PassRefPtr<T> release()
{
PassRefPtr<T> tmp = adoptRef(m_ptr);
m_ptr = 0;
return tmp;
}
T &operator*() const
{
return *m_ptr;
}
ALWAYS_INLINE T *operator->() const
{
return m_ptr;
}
bool operator!() const
{
return !m_ptr;
}
// This conversion operator allows implicit conversion to bool but not to other integer types.
typedef T *RefPtr::*UnspecifiedBoolType;
operator UnspecifiedBoolType() const
{
return m_ptr ? &RefPtr::m_ptr : 0;
}
RefPtr &operator=(const RefPtr &);
RefPtr &operator=(T *);
RefPtr &operator=(const PassRefPtr<T> &);
template <typename U> RefPtr &operator=(const RefPtr<U> &);
template <typename U> RefPtr &operator=(const PassRefPtr<U> &);
void swap(RefPtr &);
private:
static T *hashTableDeletedValue()
{
return reinterpret_cast<T *>(-1);
}
T *m_ptr;
};
template <typename T> template <typename U> inline RefPtr<T>::RefPtr(const PassRefPtr<U> &o)
: m_ptr(o.releaseRef())
{
}
template <typename T> inline RefPtr<T> &RefPtr<T>::operator=(const RefPtr<T> &o)
{
T *optr = o.get();
if (optr) {
optr->ref();
}
T *ptr = m_ptr;
m_ptr = optr;
if (ptr) {
ptr->deref();
}
return *this;
}
template <typename T> template <typename U> inline RefPtr<T> &RefPtr<T>::operator=(const RefPtr<U> &o)
{
T *optr = o.get();
if (optr) {
optr->ref();
}
T *ptr = m_ptr;
m_ptr = optr;
if (ptr) {
ptr->deref();
}
return *this;
}
template <typename T> inline RefPtr<T> &RefPtr<T>::operator=(T *optr)
{
if (optr) {
optr->ref();
}
T *ptr = m_ptr;
m_ptr = optr;
if (ptr) {
ptr->deref();
}
return *this;
}
template <typename T> inline RefPtr<T> &RefPtr<T>::operator=(const PassRefPtr<T> &o)
{
T *ptr = m_ptr;
m_ptr = o.releaseRef();
if (ptr) {
ptr->deref();
}
return *this;
}
template <typename T> template <typename U> inline RefPtr<T> &RefPtr<T>::operator=(const PassRefPtr<U> &o)
{
T *ptr = m_ptr;
m_ptr = o.releaseRef();
if (ptr) {
ptr->deref();
}
return *this;
}
template <class T> inline void RefPtr<T>::swap(RefPtr<T> &o)
{
std::swap(m_ptr, o.m_ptr);
}
template <class T> inline void swap(RefPtr<T> &a, RefPtr<T> &b)
{
a.swap(b);
}
template <typename T, typename U> inline bool operator==(const RefPtr<T> &a, const RefPtr<U> &b)
{
return a.get() == b.get();
}
template <typename T, typename U> inline bool operator==(const RefPtr<T> &a, U *b)
{
return a.get() == b;
}
template <typename T, typename U> inline bool operator==(T *a, const RefPtr<U> &b)
{
return a == b.get();
}
template <typename T, typename U> inline bool operator!=(const RefPtr<T> &a, const RefPtr<U> &b)
{
return a.get() != b.get();
}
template <typename T, typename U> inline bool operator!=(const RefPtr<T> &a, U *b)
{
return a.get() != b;
}
template <typename T, typename U> inline bool operator!=(T *a, const RefPtr<U> &b)
{
return a != b.get();
}
template <typename T, typename U> inline RefPtr<T> static_pointer_cast(const RefPtr<U> &p)
{
return RefPtr<T>(static_cast<T *>(p.get()));
}
template <typename T, typename U> inline RefPtr<T> const_pointer_cast(const RefPtr<U> &p)
{
return RefPtr<T>(const_cast<T *>(p.get()));
}
template <typename T> inline T *getPtr(const RefPtr<T> &p)
{
return p.get();
}
} // namespace WTF
using WTF::RefPtr;
using WTF::static_pointer_cast;
using WTF::const_pointer_cast;
#endif // WTF_RefPtr_h
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