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) >= 0)
      ret getWoodyRuleFromSource(lines, i);
  }
  null;
}