AttributeElementHeader.h

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 * Copyright (c) 2008-2010 Michael Schulze <mschulze@ivs.cs.uni-magdeburg.de>
 *                    2010 Marcus Foerster <MarcusFoerster1@gmx.de>
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#ifndef _Attribute_Element_Header_
#define _Attribute_Element_Header_

#include <stdint.h>

#include "mw/attributes/detail/HighDensityIDs.h"

namespace famouso {
    namespace mw {
        namespace attributes {
            namespace detail {

                union AttributeElementHeader {
                        // For high density attributes
                        struct {
                                uint8_t valueOrLength     :2;
                                uint8_t lengthValueSwitch :1;
                                uint8_t extension         :1;
                                uint8_t category          :4;
                        }__attribute__((packed));

                        // For low density attributes
                        uint8_t length                    :3;

                        bool isHighDensity() const {
                            return (category != HighDensityIDs::lowDensity);
                        }
                };
            } // end namespace attributes
        } // end namespace attributes
    } // end namespace mw
} // end namespace famouso

#endif // _Attribute_Element_Header_