namespace factor {

struct to_tenured_policy {
  factor_vm* parent;
  tenured_space* tenured;

  explicit to_tenured_policy(factor_vm* parent)
      : parent(parent), tenured(parent->data->tenured) {}

  bool should_copy_p(object* untagged) {
    return !tenured->contains_p(untagged);
  }

  void promoted_object(object* obj) {
    parent->mark_stack.push_back((cell) obj);
  }

  void visited_object(object* obj) {}
};

struct to_tenured_collector : collector<tenured_space, to_tenured_policy> {
  explicit to_tenured_collector(factor_vm* parent);
  void tenure_reachable_objects();
};

}