static int tok_leftScanType(LS tok, int i) {
  i = tok_leftScanTypeArgsOpt(i);
  do {
    if (!isIdentifier(get(tok, i-2))) ret i; // weird
    i = tok_leftScanType(tok, i-2);
  } while (eqGet(tok, i-2, "."));
  ret i;
}