/usr/include/KF5/wtf/SharedPtr.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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* This file is part of the KDE libraries
* Copyright (C) 2005 Apple Computer, Inc.
*
* 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_SharedPtr_h
#define WTF_SharedPtr_h
namespace WTF
{
// FIXME: Change template name to RefPtr?
template <class T> class SharedPtr
{
public:
SharedPtr() : m_ptr(0) {}
SharedPtr(T *ptr) : m_ptr(ptr)
{
if (ptr) {
ptr->ref();
}
}
SharedPtr(const SharedPtr &o) : m_ptr(o.m_ptr)
{
if (T *ptr = m_ptr) {
ptr->ref();
}
}
~SharedPtr()
{
if (T *ptr = m_ptr) {
ptr->deref();
}
}
template <class U> SharedPtr(const SharedPtr<U> &o) : m_ptr(o.get())
{
if (T *ptr = m_ptr) {
ptr->ref();
}
}
// FIXME: Deprecate in favor of operators below, then remove?
bool isNull() const
{
return m_ptr == 0;
}
bool notNull() const
{
return m_ptr != 0;
}
// FIXME: Deprecate in favor of operator=, then remove?
void reset()
{
if (T *ptr = m_ptr) {
ptr->deref();
} m_ptr = 0;
}
void reset(T *o)
{
if (o) {
o->ref();
} if (T *ptr = m_ptr) {
ptr->deref();
} m_ptr = o;
}
T *get() const
{
return m_ptr;
}
T &operator*() const
{
return *m_ptr;
}
T *operator->() const
{
return m_ptr;
}
bool operator!() const
{
return m_ptr == 0;
}
operator bool() const
{
return m_ptr != 0;
}
SharedPtr &operator=(const SharedPtr &);
SharedPtr &operator=(T *);
private:
T *m_ptr;
operator int() const; // deliberately not implemented; helps prevent operator bool from converting to int accidentally
};
template <class T> SharedPtr<T> &SharedPtr<T>::operator=(const SharedPtr<T> &o)
{
T *optr = o.m_ptr;
if (optr) {
optr->ref();
}
if (T *ptr = m_ptr) {
ptr->deref();
}
m_ptr = optr;
return *this;
}
template <class T> inline SharedPtr<T> &SharedPtr<T>::operator=(T *optr)
{
if (optr) {
optr->ref();
}
if (T *ptr = m_ptr) {
ptr->deref();
}
m_ptr = optr;
return *this;
}
template <class T> inline bool operator==(const SharedPtr<T> &a, const SharedPtr<T> &b)
{
return a.get() == b.get();
}
template <class T> inline bool operator==(const SharedPtr<T> &a, const T *b)
{
return a.get() == b;
}
template <class T> inline bool operator==(const T *a, const SharedPtr<T> &b)
{
return a == b.get();
}
template <class T> inline bool operator!=(const SharedPtr<T> &a, const SharedPtr<T> &b)
{
return a.get() != b.get();
}
template <class T> inline bool operator!=(const SharedPtr<T> &a, const T *b)
{
return a.get() != b;
}
template <class T> inline bool operator!=(const T *a, const SharedPtr<T> &b)
{
return a != b.get();
}
template <class T, class U> inline SharedPtr<T> static_pointer_cast(const SharedPtr<U> &p)
{
return SharedPtr<T>(static_cast<T *>(p.get()));
}
template <class T, class U> inline SharedPtr<T> const_pointer_cast(const SharedPtr<U> &p)
{
return SharedPtr<T>(const_cast<T *>(p.get()));
}
} // namespace WTF
using WTF::SharedPtr;
using WTF::static_pointer_cast;
using WTF::const_pointer_cast;
#endif // WTF_SharedPtr_h
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