Simple2.jj Second Simple JavaCC example

The second example is a simple improvement.

This one does not abend when the input does not
have the word test in it. It gives due
warning instead.

options {
    IGNORE_CASE = true;
   DEBUG_PARSER = false;
   DEBUG_LOOKAHEAD = false;
   DEBUG_TOKEN_MANAGER = false;
   LOOKAHEAD = 2;
   FORCE_LA_CHECK=true;
}

PARSER_BEGIN(Simple2)

public class Simple2 {

   /** Main entry point. */
   public static void main(String args[]) throws ParseException {

   Simple2 parser = new Simple2(System.in);

   parser.Input();
   }

}

PARSER_END(Simple2)

SKIP : {
   " "
   "\t"
   "\n"
   "\r"
}
TOKEN: { < TEST: "test">}

TOKEN: {<CR_LF: "\r\n"> }

TOKEN : { <OTHER : ~[] > }

void Input() :
{
   System.out.println("Start");
   Token t1=null;}
{
   (
      (<OTHER>)*
      (t1=<TEST> {System.out.println("This line has test in it.");})?
      (<OTHER>)*

      <CR_LF> {if (t1==null) System.out.println("Sorry no test in this line!");}
   )*
   <EOF >
}