server/src/framework/Utilities/LinkedReference/Reference.h
VladimirMangos acd0716297 [10432] Rename ASSERT -> MANGOS_ASSERT and related fixes
ASSERT hard use in predictable way because diff. 3rd party libs code
redefine it inf different ways and hard make sure that used in end
of mangos define version. This is real detected problem make some
expected assert checks ignored and so bugs not detected as expected from code.

In addition made related changes:
* Common.h header expected to be first include in any src/game/header except most simple cases.
* Related FILE.h header expected to be first include in FILE.cpp
* Fixed some absent includes and type forwards for safe build without PCH enabled.
* Avoid using MANGOS_ASSERT in src/framework code
2010-09-02 05:13:16 +04:00

111 lines
3.9 KiB
C++

/*
* Copyright (C) 2005-2010 MaNGOS <http://getmangos.com/>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _REFERENCE_H
#define _REFERENCE_H
#include "Utilities/LinkedList.h"
//=====================================================
template<class TO, class FROM>
class Reference : public LinkedListElement
{
private:
TO* iRefTo;
FROM* iRefFrom;
protected:
// Tell our refTo (target) object that we have a link
virtual void targetObjectBuildLink() = 0;
// Tell our refTo (taget) object, that the link is cut
virtual void targetObjectDestroyLink() = 0;
// Tell our refFrom (source) object, that the link is cut (Target destroyed)
virtual void sourceObjectDestroyLink() = 0;
public:
Reference()
: iRefTo(NULL), iRefFrom(NULL)
{
}
virtual ~Reference() {}
// Create new link
void link(TO* toObj, FROM* fromObj)
{
assert(fromObj); // fromObj MUST not be NULL
if (isValid())
unlink();
if (toObj != NULL)
{
iRefTo = toObj;
iRefFrom = fromObj;
targetObjectBuildLink();
}
}
// We don't need the reference anymore. Call comes from the refFrom object
// Tell our refTo object, that the link is cut
void unlink()
{
targetObjectDestroyLink();
delink();
iRefTo = NULL;
iRefFrom = NULL;
}
// Link is invalid due to destruction of referenced target object. Call comes from the refTo object
// Tell our refFrom object, that the link is cut
void invalidate() // the iRefFrom MUST remain!!
{
sourceObjectDestroyLink();
delink();
iRefTo = NULL;
}
bool isValid() const // Only check the iRefTo
{
return iRefTo != NULL;
}
Reference<TO,FROM> * next() { return((Reference<TO, FROM> *) LinkedListElement::next()); }
Reference<TO,FROM> const* next() const { return((Reference<TO, FROM> const*) LinkedListElement::next()); }
Reference<TO,FROM> * prev() { return((Reference<TO, FROM> *) LinkedListElement::prev()); }
Reference<TO,FROM> const* prev() const { return((Reference<TO, FROM> const*) LinkedListElement::prev()); }
Reference<TO,FROM> * nocheck_next() { return((Reference<TO, FROM> *) LinkedListElement::nocheck_next()); }
Reference<TO,FROM> const* nocheck_next() const { return((Reference<TO, FROM> const*) LinkedListElement::nocheck_next()); }
Reference<TO,FROM> * nocheck_prev() { return((Reference<TO, FROM> *) LinkedListElement::nocheck_prev()); }
Reference<TO,FROM> const* nocheck_prev() const { return((Reference<TO, FROM> const*) LinkedListElement::nocheck_prev()); }
TO* operator->() const { return iRefTo; }
TO* getTarget() const { return iRefTo; }
FROM* getSource() const { return iRefFrom; }
};
//=====================================================
#endif