static WoodyRule findWoodyRuleInSource(S src, S ruleName) {
  L<S> lines = lines(src);
  for i, S s over lines: {
    L<S> tok = javaTok(s);
    if (jfind(tok, "RULE " + ruleName)) {
      new WoodyRule rule;
      ret rule;
    }
  }
  null;
}