// We'd be really fancy if we filtered out return statements in
// inner blocks.
static bool containsReturnWithArgument(L<S> tok) {
  for (int i = 1; i+2 < l(tok); i += 2)
    if (eqOneOf(tok.get(i), "ret", "return") && neq(tok.get(i+2), ";"))
      true;
  false;
}

static bool containsReturnWithArgument(S code) {
  ret containsReturnWithArgument(javaTok(code));
}