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/*
** 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Author : Alexandre Parenteau <aubonbeurre@hotmail.com> --- May 1999
*/
#ifndef UOBJECT_H
#define UOBJECT_H
#include "uconfig.h"
#ifdef __cplusplus
class UObject;
class UEXPORT URuntimeClass
{
public:
URuntimeClass(const char *lpszClassName, int nObjectSize,
UObject* (*pfnCreateObject)(), const URuntimeClass* (*pfnGetBaseClass)());
~URuntimeClass();
// Attributes
const char *m_lpszClassName;
int m_nObjectSize;
UObject* (* m_pfnCreateObject)(); // 0L => abstract class
const URuntimeClass* (* m_pfnGetBaseClass)();
// Operations
UObject* CreateObject();
bool IsDerivedFrom(const URuntimeClass* pBaseClass) const;
// CRuntimeClass objects linked together in simple list
URuntimeClass* m_pNextClass; // linked list of registered classes
// linked list of all the registred runtime classes
static URuntimeClass *sAllURuntimeClass;
};
#define URUNTIME_CLASS(class_name) (class_name::rt##class_name())
#define UDECLARE_DYNAMIC(class_name) \
protected: \
static const URuntimeClass* _GetBaseClass(); \
static const URuntimeClass class##class_name; \
public: \
static const URuntimeClass *rt##class_name(void); \
virtual const URuntimeClass* GetRuntimeClass() const; \
// dynamically constructable
#define UDECLARE_DYNCREATE(class_name) \
UDECLARE_DYNAMIC(class_name) \
static UObject* CreateObject(); \
#define UIMPLEMENT_RUNTIMECLASS(class_name, base_class_name, pfnNew) \
const URuntimeClass *class_name::rt##class_name(void) \
{ return &class_name::class##class_name; } \
const URuntimeClass* class_name::_GetBaseClass() \
{ return URUNTIME_CLASS(base_class_name); } \
const URuntimeClass class_name::class##class_name( \
#class_name, sizeof(class class_name), pfnNew, \
&class_name::_GetBaseClass); \
const URuntimeClass* class_name::GetRuntimeClass() const \
{ return URUNTIME_CLASS(class_name); } \
#define UIMPLEMENT_DYNAMIC(class_name, base_class_name) \
UIMPLEMENT_RUNTIMECLASS(class_name, base_class_name, 0L)
#define UIMPLEMENT_DYNCREATE(class_name, base_class_name) \
UObject* class_name::CreateObject() \
{ return new class_name; } \
UIMPLEMENT_RUNTIMECLASS(class_name, base_class_name, \
class_name::CreateObject)
class UEXPORT UObject
{
public:
virtual const URuntimeClass* GetRuntimeClass() const;
virtual ~UObject() {}
static const URuntimeClass *rtUObject();
static const URuntimeClass* _GetBaseClass();
static UObject* CreateObject(const char *className);
bool IsKindOf(const URuntimeClass* pClass) const;
protected:
static const URuntimeClass classUObject;
UObject() {}
};
#define UDYNAMIC_CAST(TYPE, EXPR) \
((TYPE *)((EXPR) == 0L ? 0L : ((EXPR)->IsKindOf(URUNTIME_CLASS(TYPE)) ? (TYPE *)EXPR : 0L)))
#endif /* __cplusplus */
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
}
#endif
#endif /* UOBJECT_H */
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