CWE-ou-minkata/Sources/Plasma/NucleusLib/pnFactory/plCreator.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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it under the terms of the GNU General Public License as published by
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*==LICENSE==*/

#ifndef plCreator_inc
#define plCreator_inc

#include "plClassIndexMacros.h"
#include "plCreatableIndex.h"
#include "plFactory.h"

class plCreatable;

class plCreator
{
private:
protected:

public:
    plCreator() { }
    virtual ~plCreator() { }

    virtual plCreatable*  Create() const = 0;
    virtual uint16_t      ClassIndex() = 0;
    virtual const char*   ClassName() const = 0;
    virtual bool          HasBaseClass(uint16_t hBase) = 0;

    friend class plFactory;
};

#define REGISTER_CREATABLE( plClassName )                                           \
                                                                                    \
class plClassName##__Creator : public plCreator                                     \
{                                                                                   \
public:                                                                             \
    plClassName##__Creator()                                                        \
    {                                                                               \
        plFactory::Register( CLASS_INDEX_SCOPED(plClassName), this);                \
        plClassName::SetClassIndex(ClassIndex());                                   \
    }                                                                               \
    virtual ~plClassName##__Creator()                                               \
    {                                                                               \
        plFactory::UnRegister(CLASS_INDEX_SCOPED(plClassName), this);               \
    }                                                                               \
                                                                                    \
    virtual bool HasBaseClass(uint16_t hBase) { return plClassName::HasBaseClass(hBase); }  \
                                                                                    \
    virtual uint16_t ClassIndex() { return CLASS_INDEX_SCOPED(plClassName); }         \
    virtual const char* ClassName() const { return #plClassName; }                  \
                                                                                    \
    virtual plCreatable* Create() const { return new plClassName; }         \
                                                                                    \
};                                                                                  \
static plClassName##__Creator   static##plClassName##__Creator;                     \
uint16_t plClassName::plClassName##ClassIndex = 0;                                    //

#define REGISTER_NONCREATABLE( plClassName )                                        \
                                                                                    \
class plClassName##__Creator : public plCreator                                     \
{                                                                                   \
public:                                                                             \
    plClassName##__Creator()                                                        \
    {                                                                               \
        plFactory::Register( CLASS_INDEX_SCOPED(plClassName), this);                \
        plClassName::SetClassIndex(ClassIndex());                                   \
    }                                                                               \
    virtual ~plClassName##__Creator()                                               \
    {                                                                               \
        plFactory::UnRegister(CLASS_INDEX_SCOPED(plClassName), this);               \
    }                                                                               \
                                                                                    \
    virtual bool HasBaseClass(uint16_t hBase) { return plClassName::HasBaseClass(hBase); }  \
                                                                                    \
    virtual uint16_t ClassIndex() { return CLASS_INDEX_SCOPED(plClassName); }         \
    virtual const char* ClassName() const { return #plClassName; }                  \
                                                                                    \
    virtual plCreatable*        Create() const { return nil; }                      \
                                                                                    \
};                                                                                  \
static plClassName##__Creator   static##plClassName##__Creator;                     \
uint16_t plClassName::plClassName##ClassIndex = 0;                                    //

#define DECLARE_EXTERNAL_CREATABLE( plClassName )                                   \
                                                                                    \
class plClassName##__Creator : public plCreator                                     \
{                                                                                   \
public:                                                                             \
    plClassName##__Creator()                                                        \
    {                                                                               \
    }                                                                               \
    virtual ~plClassName##__Creator()                                               \
    {                                                                               \
        plFactory::UnRegister(EXTERN_CLASS_INDEX_SCOPED(plClassName), this);        \
    }                                                                               \
    void Register()                                                                 \
    {                                                                               \
        plFactory::Register( EXTERN_CLASS_INDEX_SCOPED(plClassName), this);         \
        plClassName::SetClassIndex(ClassIndex());                                   \
    }                                                                               \
    void UnRegister()                                                               \
    {                                                                               \
        plFactory::UnRegister(EXTERN_CLASS_INDEX_SCOPED(plClassName), this);        \
    }                                                                               \
                                                                                    \
    virtual bool HasBaseClass(uint16_t hBase) { return plClassName::HasBaseClass(hBase); }  \
                                                                                    \
    virtual uint16_t ClassIndex() { return EXTERN_CLASS_INDEX_SCOPED(plClassName); }  \
    virtual const char* ClassName() const { return #plClassName; }                  \
                                                                                    \
    virtual plCreatable* Create() const { return new plClassName; }         \
                                                                                    \
};                                                                                  \
static plClassName##__Creator   static##plClassName##__Creator;                     \
uint16_t plClassName::plClassName##ClassIndex = 0;                                    //

#define REGISTER_EXTERNAL_CREATABLE(plClassName)                                    \
static##plClassName##__Creator.Register();                                          //

#define UNREGISTER_EXTERNAL_CREATABLE(plClassName)                                  \
plFactory::UnRegister(EXTERN_CLASS_INDEX_SCOPED(plClassName), &static##plClassName##__Creator);

#define REGISTER_EXTERNAL_NONCREATABLE( plClassName )                               \
                                                                                    \
class plClassName##__Creator : public plCreator                                     \
{                                                                                   \
public:                                                                             \
    plClassName##__Creator()                                                        \
    {                                                                               \
        plFactory::Register( EXTERN_CLASS_INDEX_SCOPED(plClassName), this);         \
        plClassName::SetClassIndex(ClassIndex());                                   \
    }                                                                               \
    virtual ~plClassName##__Creator()                                               \
    {                                                                               \
        plFactory::UnRegister(EXTERN_CLASS_INDEX_SCOPED(plClassName), this);        \
    }                                                                               \
                                                                                    \
    virtual bool HasBaseClass(uint16_t hBase) { return plClassName::HasBaseClass(hBase); }  \
                                                                                    \
    virtual uint16_t ClassIndex() { return EXTERN_CLASS_INDEX_SCOPED(plClassName); }  \
    virtual const char* ClassName() const { return #plClassName; }                  \
                                                                                    \
    virtual plCreatable*        Create() const { return nil; }                      \
                                                                                    \
};                                                                                  \
static plClassName##__Creator   static##plClassName##__Creator;                     \
uint16_t plClassName::plClassName##ClassIndex = 0;                                    //


#endif // plCreator_inc