sclass ManagedString extends AbstractManagedObject implements CharSequence {

  replace Addr with int.

  S value;

  // usable but doesn't handle null

  *(ManagedIntObjects_v1 mem, Addr *addr) {

    super(mem);

    value = mem.readString(addr);

  }

  // ...unless you call this

  bool isNull() { ret value == null; }

  // internal

  *(ManagedIntObjects_v1 mem, S *value, Addr *addr) {

    super(mem);

  }

  // for proper null handling

  static ManagedString load(ManagedIntObjects_v1 mem, Addr addr) {

    S value = mem.readString(addr);

    if (value == null) null;

    ret new ManagedString(mem, value, addr);

  }

  static ManagedString create(ManagedIntObjects_v1 mem, S value) {

    if (value == null) null;

    ret new ManagedString(mem, value, mem.newString(value));

  }

  // GC handling

  public void scanForCollection(IManagedObjectCollector gc) {

    gc.noteString(addr, lambda1 setAddr);

  } 

  @Override

  public char charAt(int index) {

    ret value.charAt(index);

  }

  @Override

  public int length() {

    ret l(value);

  }

  @Override

  public CharSequence subSequence(int start, int end) {

    ret value.substring(start, end);

  }

  @Override

  toString { ret value == null ? "" : value.toString(); }

}