package fk

case object  ParseException extends Throwable {}

class RexParser(input: Iterator[char]) {

  init()
  var ch = '%'; // illegal character that we *should* never see
  
  def next: char =  {
    if(input.hasNext)
                do { 
                  ch = input.next; 
                  System.out.println("'"+ch+"'"); // DEBUG
                } while (Character.isWhitespace(ch));
    System.out.println("meet this cute character, ch = "+ch); // DEBUG
    return ch;
  }
  def init(): this.type  = { 
    System.out.println("init()"); 
    this.next; 
    System.out.println("after init() ch is now ch == '"+ch+"'"); 
    this; 
  }
  
  def nextEvent: Object = {
    System.out.println("nextEvent(), ch = "+ch); // DEBUG
    if (Character.isJavaIdentifierStart(ch)) {
      Console.println(1); System.exit(-1); null
    } else {
      System.out.println("huh? I don't like this character ch == '"+ch+"'");
      throw ParseException
    } 
  }
  
}

object fk {
  def main(args:Array[String]) = {
    val z:Seq[Char] = "port['int']"
    val p = new RexParser(z.elements)
    p.nextEvent
  }
}