svoid tok_moduleClassDecls(L<S> tok) {
  int i;
  while ((i = jfind(tok, "module <id>")) >= 0) {
    int i1 = leftScanModifiers(tok, i);
    S name = tok.get(i+2);
    tok.set(i, "sclass");
    tokPrepend(tok, i1, "sbool _moduleClass_" + name + ";\n"); // just a marker to quickly find module classes
    reTok(tok, i1, i+1);
  }
}