TPointerDeleter.hpp

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#ifndef __TPointerDeleter__
#define __TPointerDeleter__

#include "../Basics/CCountedObject.hpp"
using Exponent::Basics::CCountedObject;
namespace Exponent
{
    namespace Collections
    {
        template<class TypeName> class TPointerDeleter : public CCountedObject
        {
            EXPONENT_CLASS_DECLARATION;
//  ===========================================================================

        public:

            TPointerDeleter();

            virtual ~TPointerDeleter();

            virtual void pointerAdded(TypeName *pointer) const = 0;

            virtual void deletePointer(TypeName *pointer) const = 0;
        };

//  ===========================================================================

        template<class TypeName> class TObjectDeleter : public TPointerDeleter<TypeName>
        {
            EXPONENT_CLASS_DECLARATION;
//  ===========================================================================

        public:

            TObjectDeleter();

            virtual ~TObjectDeleter();

            virtual void pointerAdded(TypeName *pointer) const { }

            virtual void deletePointer(TypeName *pointer) const;
        };

//  ===========================================================================

        template<class TypeName> class TObjectNuller : public TPointerDeleter<TypeName>
        {
            EXPONENT_CLASS_DECLARATION;
//  ===========================================================================

        public:

            TObjectNuller();

            virtual ~TObjectNuller();

            virtual void pointerAdded(TypeName *pointer) const { }

            virtual void deletePointer(TypeName *pointer) const;
        };

//  ===========================================================================

        template<class TypeName> class TCountedObjectDeleter : public TPointerDeleter<TypeName>
        {
            EXPONENT_CLASS_DECLARATION;
//  ===========================================================================

        public:

            TCountedObjectDeleter();

            virtual ~TCountedObjectDeleter();

            virtual void pointerAdded(TypeName *pointer) const;

            virtual void deletePointer(TypeName *pointer) const;
        };

//  ===========================================================================

//  ===========================================================================

        EXPONENT_TEMPLATE_CLASS_IMPLEMENTATION(TPointerDeleter<TypeName>, TypeName, CCountedObject);
        EXPONENT_TEMPLATE_CLASS_IMPLEMENTATION_TEMPLATE_PARENT(TObjectDeleter<TypeName>, TypeName, TPointerDeleter<TypeName>, TypeName);
        EXPONENT_TEMPLATE_CLASS_IMPLEMENTATION_TEMPLATE_PARENT(TObjectNuller<TypeName>, TypeName, TPointerDeleter<TypeName>, TypeName);
        EXPONENT_TEMPLATE_CLASS_IMPLEMENTATION_TEMPLATE_PARENT(TCountedObjectDeleter<TypeName>, TypeName, TPointerDeleter<TypeName>, TypeName);

//  ===========================================================================
        template<class TypeName> TPointerDeleter<TypeName>::TPointerDeleter()
        {
            EXPONENT_CLASS_CONSTRUCTION(TPointerDeleter<TypeName>);
        }

//  ===========================================================================
        template<class TypeName> TPointerDeleter<TypeName>::~TPointerDeleter()
        {
            EXPONENT_CLASS_DESTRUCTION(TPointerDeleter<TypeName>);
        }

//  ===========================================================================
        template<class TypeName> TObjectDeleter<TypeName>::TObjectDeleter()
        {
            EXPONENT_CLASS_CONSTRUCTION(TObjectDeleter<TypeName>);
        }

//  ===========================================================================
        template<class TypeName> TObjectDeleter<TypeName>::~TObjectDeleter()
        {
            EXPONENT_CLASS_DESTRUCTION(TObjectDeleter<TypeName>);
        }

//  ===========================================================================
        template<class TypeName> void TObjectDeleter<TypeName>::deletePointer(TypeName *pointer) const
        {
            FREE_POINTER(pointer);
        }

//  ===========================================================================
        template<class TypeName> TObjectNuller<TypeName>::TObjectNuller()
        {
            EXPONENT_CLASS_CONSTRUCTION(TObjectNuller<TypeName>);
        }

//  ===========================================================================
        template<class TypeName> TObjectNuller<TypeName>::~TObjectNuller()
        {
            EXPONENT_CLASS_DESTRUCTION(TObjectNuller<TypeName>);
        }

//  ===========================================================================
        template<class TypeName> void TObjectNuller<TypeName>::deletePointer(TypeName *pointer) const
        {
            NULL_POINTER(pointer);
        }

//  ===========================================================================
        template<class TypeName> TCountedObjectDeleter<TypeName>::TCountedObjectDeleter()
        {
            EXPONENT_CLASS_CONSTRUCTION(TCountedObjectDeleter<TypeName>);
        }

//  ===========================================================================
        template<class TypeName> TCountedObjectDeleter<TypeName>::~TCountedObjectDeleter()
        {
            EXPONENT_CLASS_DESTRUCTION(TCountedObjectDeleter<TypeName>);
        }

//  ===========================================================================
        template<class TypeName> void TCountedObjectDeleter<TypeName>::pointerAdded(TypeName *pointer) const
        {
            if (pointer)
            {
                pointer->referenced();
            }
        }

//  ===========================================================================
        template<class TypeName> void TCountedObjectDeleter<TypeName>::deletePointer(TypeName *pointer) const
        {
            FORGET_COUNTED_OBJECT(pointer);
        }

    }
}
#endif      // End of TPointerDeleter.hpp

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