cobjectfactory.h

//==========================================================================
//  COBJECTFACTORY.H - part of
//                     OMNeT++/OMNEST
//            Discrete System Simulation in C++
//
//==========================================================================

/*--------------------------------------------------------------*
  Copyright (C) 1992-2017 Andras Varga
  Copyright (C) 2006-2017 OpenSim Ltd.

  This file is distributed WITHOUT ANY WARRANTY. See the file
  `license' for details on this and other legal matters.
*--------------------------------------------------------------*/

#ifndef __OMNETPP_COBJECTFACTORY_H
#define __OMNETPP_COBJECTFACTORY_H

#include "simkerneldefs.h"
#include "globals.h"
#include "cownedobject.h"

namespace omnetpp {


class SIM_API cObjectFactory : public cNoncopyableOwnedObject
{
  private:
    cObject *(*creatorFunc)();
    void *(*castFunc)(cObject *);
    std::string description;

  public:
    cObjectFactory(const char *name, cObject *(*creatorfunc)(), void *(*castfunc)(cObject *), const char *description=nullptr);

    virtual std::string str() const override;

    virtual bool isAbstract() const  {return creatorFunc==nullptr;}

    virtual cObject *createOne() const;

    virtual bool isInstance(cObject *obj) const  {return castFunc(obj)!=nullptr;}

    const char *getDescription() const  {return description.c_str();}

    static cObjectFactory *find(const char *className, const char *contextNamespace=nullptr, bool fallbackToOmnetpp=true);

    static cObjectFactory *get(const char *className, const char *contextNamespace=nullptr, bool fallbackToOmnetpp=true);

    static cObject *createOne(const char *classname);

    static cObject *createOneIfClassIsKnown(const char *classname);
};


inline cObject *createOne(const char *classname) {
    return cObjectFactory::createOne(classname);
}

inline cObject *createOneIfClassIsKnown(const char *classname) {
    return cObjectFactory::createOneIfClassIsKnown(classname);
}

}  // namespace omnetpp


#endif