AutoRefBase.h

//
// Copyright (c) 2006-2007 Raphael David / CANTOR
//

#ifndef CMR_AUTO_REF_BASE_DEFINED
#define CMR_AUTO_REF_BASE_DEFINED

#include "Commore.h"

namespace commore
{
    class RefObject;
    typedef RefObject* PRefObject;

    class CMREXD AutoRefBase
    {
        friend class  RefObject;

    public:
        AutoRefBase()
            : p_(0)
        {}
        AutoRefBase(RefObject* p)
            : p_(p)
        {
            attach();
        }
        AutoRefBase(const AutoRefBase& a)
            : p_(a.get_())
        {
            attach();
        }
        AutoRefBase& operator = (const AutoRefBase& a)
        {
            if ((void*)this != (void*)&a)
            {
                set_(a.get_());
            }
            return *this;
        }
        ~AutoRefBase()
        {
            release();
        }

    public:
        RefObject* get_() const
        {
            return p_;
        }
        void  set_(RefObject* p)
        {
            if (p_ != p)
            {
                release();
                p_ = p;
                attach();
            }
        }
        void  clear()
        {
            set_(0);
        }

    private:
        inline      void  attach();
        inline      void  release();

    private:
        RefObject* p_;
    };

    class CMREXD IAutoRefBase
    {
        friend class  RefObject;
    public:
        IAutoRefBase(RefObject* p)
            : p_(p)
        {
            attach();
        }
        IAutoRefBase(const IAutoRefBase& a)
            : p_(a.get_())
        {
            attach();
        }
        IAutoRefBase& operator = (const IAutoRefBase& a)
        {
            if ((void*)this != (void*)&a)
            {
                set_(a.get_());
            }
            return *this;
        }
        ~IAutoRefBase()
        {
            release();
        }

    public:
        RefObject* get_() const
        {
            return p_;
        }
        void  set_(RefObject* p)
        {
            if (p_ != p)
            {
                release();
                p_ = p;
                attach();
            }
        }
        void  clear()
        {
            set_(0);
        }

    private:
        inline      void  attach();
        inline      void  release();

    private:
        RefObject* p_;
    };

}
#endif