svoid tok_insertCasts_noReTok(LS tok, int start, int end, S var, S type) {
  end = min(end, l(tok));
    
  for (int j = start; j < end; j += 2)
    if (eq(tok.get(j), var) && neqGet(tok, j-2, ".")
      && neqGetOneOf(tok, j+2, "cast", "(")
      && !tok_isAssignment(tok, j+2))
      tok_insertCast(tok, j, type);
}

Began life as a copy of #1017552