#ifndef __NumberRep
#define __NumberRep

#include "Number.hh"

// forward declarations
class SimpleNumber;
class Integer;
class Long;
class LargeInt;
class Complex;
class Imaginary;


class NumberRep
{

friend class Number;

public:

  NumberRep( );
  ~NumberRep( );

  virtual NumberRep* operator+ ( const NumberRep& n ) const =0;
  virtual NumberRep* operator- ( const NumberRep& n ) const =0;
  virtual NumberRep* operator- ( ) const =0;

protected:
  virtual NumberRep* addInt( const Integer& n ) const =0;
  virtual NumberRep* addLong( const Long& n ) const =0;
  virtual NumberRep* addLargeInt( const LargeInt& n ) const =0;
  virtual NumberRep* addComplex( const Complex& n ) const =0;
  virtual NumberRep* addImaginary( const Imaginary& n ) const =0;

  virtual NumberRep* subsInt( const Integer& n ) const =0;
  virtual NumberRep* subsLong( const Long& n ) const =0;
  virtual NumberRep* subsLargeInt( const LargeInt& n ) const =0;
  virtual NumberRep* subsComplex( const Complex& n ) const =0;
  virtual NumberRep* subsImaginary( const Imaginary& n ) const =0;

private:
  int count;
};

#endif // __NumberRep