1 // Copyright (C) 2004-2009 Mathias Froehlich - Mathias.Froehlich@web.de
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Library General Public
5 // License as published by the Free Software Foundation; either
6 // version 2 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Library General Public License for more details.
13 // You should have received a copy of the GNU General Public License
14 // along with this program; if not, write to the Free Software
15 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 #include "SGWeakReferenced.hxx"
28 SGWeakPtr(const SGWeakPtr& p) : mWeakData(p.mWeakData)
31 SGWeakPtr(const SGSharedPtr<U>& p)
32 { SGSharedPtr<T> sharedPtr = p; assign(sharedPtr.get()); }
34 SGWeakPtr(const SGWeakPtr<U>& p)
35 { SGSharedPtr<T> sharedPtr = p.lock(); assign(sharedPtr.get()); }
40 SGWeakPtr& operator=(const SGSharedPtr<U>& p)
41 { SGSharedPtr<T> sharedPtr = p; assign(sharedPtr.get()); return *this; }
43 SGWeakPtr& operator=(const SGWeakPtr<U>& p)
44 { SGSharedPtr<T> sharedPtr = p.lock(); assign(sharedPtr.get()); return *this; }
45 SGWeakPtr& operator=(const SGWeakPtr& p)
46 { mWeakData = p.mWeakData; return *this; }
48 SGSharedPtr<T> lock(void) const
51 return SGSharedPtr<T>();
52 SGSharedPtr<T> sharedPtr;
53 sharedPtr.assignNonRef(mWeakData->getPointer<T>());
59 void swap(SGWeakPtr& weakPtr)
60 { mWeakData.swap(weakPtr.mWeakData); }
66 mWeakData = p->mWeakData;
71 // The indirect reference itself.
72 SGSharedPtr<SGWeakReferenced::WeakData> mWeakData;