author | Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com> |
Fri, 08 May 2009 08:25:06 +0300 | |
changeset 8 | 7c90e6132015 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
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// -*- mode: c++; c-basic-offset: 4 -*- |
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/* |
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* This file is part of the DOM implementation for KDE. |
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* Copyright (C) 2005, 2006 Apple Computer, Inc. |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public License |
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* along with this library; see the file COPYING.LIB. If not, write to |
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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* Boston, MA 02110-1301, USA. |
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* |
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*/ |
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#ifndef DocPtr_h |
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#define DocPtr_h |
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namespace WebCore { |
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template <class T> class DocPtr { |
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public: |
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DocPtr() : m_ptr(0) {} |
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DocPtr(T *ptr) : m_ptr(ptr) { if (ptr) ptr->selfOnlyRef(); } |
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DocPtr(const DocPtr &o) : m_ptr(o.m_ptr) { if (T *ptr = m_ptr) ptr->selfOnlyRef(); } |
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~DocPtr() { if (T *ptr = m_ptr) ptr->selfOnlyDeref(); } |
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template <class U> DocPtr(const DocPtr<U> &o) : m_ptr(o.get()) { if (T *ptr = m_ptr) ptr->selfOnlyRef(); } |
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void resetSkippingRef(T *o) { m_ptr = o; } |
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T *get() const { return m_ptr; } |
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T &operator*() const { return *m_ptr; } |
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T *operator->() const { return m_ptr; } |
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bool operator!() const { return !m_ptr; } |
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// this type conversion operator allows implicit conversion to |
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// bool but not to other integer types |
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typedef T * (DocPtr::*UnspecifiedBoolType)() const; |
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operator UnspecifiedBoolType() const |
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{ |
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return m_ptr ? &DocPtr::get : 0; |
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} |
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DocPtr &operator=(const DocPtr &); |
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DocPtr &operator=(T *); |
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private: |
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T *m_ptr; |
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}; |
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template <class T> DocPtr<T> &DocPtr<T>::operator=(const DocPtr<T> &o) |
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{ |
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T *optr = o.m_ptr; |
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if (optr) |
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optr->selfOnlyRef(); |
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if (T *ptr = m_ptr) |
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ptr->selfOnlyDeref(); |
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m_ptr = optr; |
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return *this; |
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} |
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template <class T> inline DocPtr<T> &DocPtr<T>::operator=(T *optr) |
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{ |
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if (optr) |
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optr->selfOnlyRef(); |
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if (T *ptr = m_ptr) |
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ptr->selfOnlyDeref(); |
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m_ptr = optr; |
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return *this; |
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} |
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template <class T> inline bool operator==(const DocPtr<T> &a, const DocPtr<T> &b) |
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{ |
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return a.get() == b.get(); |
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} |
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template <class T> inline bool operator==(const DocPtr<T> &a, const T *b) |
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{ |
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return a.get() == b; |
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} |
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template <class T> inline bool operator==(const T *a, const DocPtr<T> &b) |
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{ |
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return a == b.get(); |
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} |
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template <class T> inline bool operator!=(const DocPtr<T> &a, const DocPtr<T> &b) |
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{ |
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return a.get() != b.get(); |
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} |
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template <class T> inline bool operator!=(const DocPtr<T> &a, const T *b) |
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{ |
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return a.get() != b; |
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} |
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template <class T> inline bool operator!=(const T *a, const DocPtr<T> &b) |
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{ |
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return a != b.get(); |
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} |
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} // namespace WebCore |
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#endif // DocPtr_h |