Method Destroy

extern/re2/re2/regexp.cc:135–169

Deletes this object; ref count has count reached 0.

// Deletes this object; ref count has count reached 0.
void Regexp::Destroy() {
  if (QuickDestroy())
    return;

  // Handle recursive Destroy with explicit stack
  // to avoid arbitrarily deep recursion on process stack [sigh].
  down_ = NULL;
  Regexp* stack = this;
  while (stack != NULL) {
    Regexp* re = stack;
    stack = re->down_;
    if (re->ref_ != 0)
      LOG(DFATAL) << "Bad reference count " << re->ref_;
    if (re->nsub_ > 0) {
      Regexp** subs = re->sub();
      for (int i = 0; i < re->nsub_; i++) {
        Regexp* sub = subs[i];
        if (sub == NULL)
          continue;
        if (sub->ref_ == kMaxRef)
          sub->Decref();
        else
          --sub->ref_;
        if (sub->ref_ == 0 && !sub->QuickDestroy()) {
          sub->down_ = stack;
          stack = sub;
        }
      }
      if (re->nsub_ > 1)
        delete[] subs;
      re->nsub_ = 0;
    }
    delete re;
  }
}

void Regexp::AddRuneToString(Rune r) {
  DCHECK(op_ == kRegexpLiteralString);