#if !defined(RESIP_UNKNOWNPARAMETER_HXX)
#define RESIP_UNKNOWNPARAMETER_HXX 

#include <iosfwd>
#include "resip/stack/Parameter.hxx"

namespace resip
{

class ParseBuffer;

/**
   @ingroup sip_grammar

   @brief Generically used to represent any parameter that is not
   known by the implmentation.
*/
class UnknownParameter : public Parameter
{
   public:
      UnknownParameter(const char* startName, 
                       unsigned int nameSize,
                       ParseBuffer& pb, 
                       const std::bitset<256>& terminators);
      
      // empty value indicates exists style (e.g. ;unknown;...)
      UnknownParameter(ParameterTypes::Type type, const Data& value);

      // for making a new unknown parameter 
      explicit UnknownParameter(const Data& name);
      EncodeStream& encode(EncodeStream& stream) const;

      Data& value() {return mValue;}
      const Data& value() const {return mValue;}
      bool hasValue() const {return !mValue.empty() || mIsQuoted;}
      bool isQuoted() const { return mIsQuoted; }
      void setQuoted(bool b) { mIsQuoted = b; }; // this parameter will be enclosed in quotes e.g. "foo"
         
      virtual const Data& getName() const;
      virtual Parameter* clone() const;

   private:
      Data mName;
      Data mValue;
      bool mIsQuoted;
};

}

EncodeStream& operator<<(EncodeStream& stream, resip::UnknownParameter& comp);

#endif

/* ====================================================================
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