用于词法分析的词法分析器

				/* $Id: foo.cpp,v 1.3 1997/02/02 01:31:00 matt Exp $								   FOO formatter.				   				   Uses compiler and output functions to read FOO from cin and spit				   out a canonically formatted FOO version to cout. */								#include "foo_output.h"				#include "FooParser.h"								int main ()				{				  BufferedInputStream istr (cin);				  FooParser parser (istr);								  if (parser.getErrors ().nItems () == 0)				  {				    cout 				  } else				  {				    cout 				  }								  return 0;				}