static LS tok_equalsCast(LS tok) {
  if (!tok.contains("cast")) ret tok;
  int i;
  Map<Int> bracketMap = getBracketMap(tok);
  while ((i = jfindOneOf(tok,
    "<id> <id> = cast",
    "<id><<id>> <id> = cast",
    "<id><<id>,<id>> <id> = cast",
  )) >= 0) {
    int iCast = indexOf(tok, i, "=")+2;
    int j = scanToEndOfInitializer(tok, bracketMap, iCast);
    tok.set(iCast, "(" + joinSubList(tok, i, iCast-5) + ") (");
    tokPrepend(tok, j+1, ")");
    reTok(tok, iCast, j+2);
  }
  ret tok;
}