protected void read_lookahead() throws java.lang.Exception {
  lookahead=new Symbol[error_sync_size()];
  for (int i=0; i < error_sync_size(); i++) {
    lookahead[i]=cur_token;
    cur_token=scan();
  }
  lookahead_pos=0;
}

protected void read_lookahead ( ) throws java . lang . Exception { lookahead = new Symbol [ error_sync_size ( ) ] ; for ( int i = 0 ; i < error_sync_size ( ) ; i ++ ) { lookahead [ i ] = cur_token ; cur_token = scan ( ) ; } lookahead_pos = 0 ; }
read from input to establish our buffer of " parse ahead " lookahead symbols .
