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/******************************************************************************
*
* swobject.h - definition for SWObject used as lowest base class for
* many SWORD objects
*
* $Id: swobject.h 2833 2013-06-29 06:40:28Z chrislit $
*
* Copyright 2001-2013 CrossWire Bible Society (http://www.crosswire.org)
* CrossWire Bible Society
* P. O. Box 2528
* Tempe, AZ 85280-2528
*
* 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 version 2.
*
* 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.
*
*/
#ifndef SWOBJECT_H
#define SWOBJECT_H
#include <defs.h>
SWORD_NAMESPACE_START
#define SWDYNAMIC_CAST(className, object) (className *)((object)?((object->getClass()->isAssignableFrom(#className))?object:0):0)
/**
* Class used for SWDYNAMIC_CAST to save the inheritance order.
*/
class SWDLLEXPORT SWClass {
private:
const char **descends;
public:
SWClass(const char **descends) {
this->descends = descends;
}
bool isAssignableFrom(const char *className) const;
};
/** Base class for major Sword classes.
* SWObject is the base class for major Sword classes like SWKey.
* It is used because dynamic_cast is not available on all plattforms supported
* by Sword. Use SWDYNAMIC_CAST(classname, object) instead of dynamic_cast<classname>(object).
*/
class SWDLLEXPORT SWObject {
protected:
SWClass * myclass;
public:
/** Use this to get the class definition and inheritance order.
* @return The class definition of this object
*/
const SWClass *getClass () const {
return myclass;
}
};
SWORD_NAMESPACE_END
#endif
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