llstrider.h

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#ifndef LL_LLSTRIDER_H
#define LL_LLSTRIDER_H

#include "stdtypes.h"

template <class Object> class LLStrider
{
        union
        {
                Object* mObjectp;
                U8*             mBytep;
        };
        U32     mSkip;
public:

        LLStrider()  { mObjectp = NULL; mSkip = sizeof(Object); } 
        ~LLStrider() { } 

        const LLStrider<Object>& operator =  (Object *first)    { mObjectp = first; return *this;}
        void setStride (S32 skipBytes)  { mSkip = (skipBytes ? skipBytes : sizeof(Object));}

        void skip(const U32 index)     { mBytep += mSkip*index;}

        Object* get()                  { return mObjectp; }
        Object* operator->()           { return mObjectp; }
        Object& operator *()           { return *mObjectp; }
        Object* operator ++(int)       { Object* old = mObjectp; mBytep += mSkip; return old; }
        Object* operator +=(int i)     { mBytep += mSkip*i; return mObjectp; }
        Object& operator[](U32 index)  { return *(Object*)(mBytep + (mSkip * index)); }
};

#endif // LL_LLSTRIDER_H

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