/* This files implements an interpreter for a BASIC-like language */

//need jbclasses.java;

public class jbrun
{

/*  Hand coded abstract syntax example

  label BEGIN;
    print "Hello\n";
    goto BEGIN;

static prog p0 = 
  new prog( 
    cons(new labelst("BEGIN"),
     cons(new printst(new strexp("Hello!\n")),
      cons(new gotost("BEGIN"),
       null))));
*/

static jblexer jblx; // way to go around java's lack of closures

public static void main(String[] args) throws Exception
{ 
  jblx = new jblexer(new java.io.FileReader(args[0]));
  Mylexer lexer = new Mylexer() 
    { public Gsym next() throws java.io.IOException { return jblx.yylex(); }};

  jbparser theparser = new jbparser(lexer);  // create parser object
  prog theprogram = null;			 // abstract syntax tree
  try {
      theprogram =  theparser.parse();
  } catch(ParseError pe)
      {
	  pe.line = jblx.linenum()+1; // in Flex, first line is 0th line
	  pe.column = jblx.columnnum()+1;
	  System.out.println(pe);
	  System.exit(1);
      }// error reporting
  theprogram.run();			//  run the program!
} 

} // end of class jbrun