#ifndef ERROR_HANDLER
#define ERROR_HANDLER
#include <iostream.h>

extern int lineno;

class ErrorHandlerClass
{
  public :
   void Error(char *str)    { 
		cerr << "Error at line " << lineno << ":" << str << endl;
		exit(-1); 
	}
   void Internal(char *str) { 
		cerr << "Internal error at line " << lineno << ":" << str << endl;
		}
   void Fatal(char *)    { }
   void Message(char *)  { }
   void Warning(char *str)  { 
		cerr << "Warning at line " << lineno << ":" << str << endl;
		}
};

#endif