ArraySizesImpl.h

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Copyright (c) 2005-2009 David Williams

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#ifndef __PolyVox_ArraySizesImpl_H__
#define __PolyVox_ArraySizesImpl_H__

#include "PolyVoxCore/Impl/TypeDef.h"

namespace PolyVox
{
    /*
    This class provides the implementation details behind ArraySizes. It is actually
    quite similar to ArraySizes, but an important difference is that it is templatised
    whereas ArraySizes is not. This allows us to use a recursive template pattern without
    exposing the use of templates to the user.

    It is based on the following article: http://www.drdobbs.com/cpp/184401319
    */
    template <uint32_t N>
    class ArraySizesImpl
    {
        typedef const uint32_t (&UIntArrayN)[N];

        friend class ArraySizes;
        friend class ArraySizesImpl<N-1>;

    public:
        ArraySizesImpl<N+1> operator () (uint32_t uSize);

        operator UIntArrayN () const;

    private:
        ArraySizesImpl(const uint32_t (&pSizes)[N-1], uint32_t uSize);

        uint32_t m_pSizes[N];
    };
}//namespace PolyVox

#include "PolyVoxCore/Impl/ArraySizesImpl.inl"

#endif //__PolyVox_ArraySizesImpl_H__