#if !defined(RESIP_ExistsOrDataParameter_HXX)

#define RESIP_ExistsOrDataParameter_HXX 

#include "resip/stack/Parameter.hxx"

#include "resip/stack/ParameterTypeEnums.hxx"

#include "resip/stack/QuotedDataParameter.hxx"

#include "rutil/PoolBase.hxx"

#include <iosfwd>

namespace resip

{

class ParseBuffer;

class ExistsOrDataParameter : public DataParameter

{

   public:

      explicit ExistsOrDataParameter(ParameterTypes::Type);

      ExistsOrDataParameter(ParameterTypes::Type, bool);

      ExistsOrDataParameter(ParameterTypes::Type, ParseBuffer& pb, 

                            const std::bitset<256>& terminators);

      virtual EncodeStream& encode(EncodeStream& stream) const;

      static Parameter* decode(ParameterTypes::Type type, 

                                 ParseBuffer& pb, 

                                 const std::bitset<256>& terminators,

                                 PoolBase* pool);

      virtual Parameter* clone() const;

   protected:

      ExistsOrDataParameter(const ExistsOrDataParameter& other) 

         : DataParameter(other)

      {}

      friend class ParserCategory;

      friend class Auth;

};

}

#endif

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