static O quickEval(S t) {
  if (isQuoted(t)) ret unquote(t);
  if (isInteger(t)) ret parseIntOrLong(t);
  if (isLongConstant(t)) ret parseLong(t);
  if (eq(t, "null")) ret null;
  if (eq(t, "false")) ret false;
  if (eq(t, "true")) ret true;
  if (isIdentifier(t)) ret getMC(t);
  if (isSnippetID(t)) ret t;
  throw quickFail("Can't quick eval: " + t);
}