Method _change_parent

include/proxy/http2/Http2DependencyTree.h:457–500

// Change node's parent to new_parent
template <typename T>
void
Tree<T>::_change_parent(Node *node, Node *new_parent, bool exclusive)
{
  ink_release_assert(node->parent != nullptr);
  node->parent->children.remove(node);
  if (node->queued) {
    node->parent->queue->erase(node->entry);
    node->queued = false;

    Node *current = node->parent;
    while (current->queue->empty() && !current->active && current->parent != nullptr) {
      current->parent->queue->erase(current->entry);
      current->queued = false;
      current         = current->parent;
    }
  }

  node->parent = nullptr;
  if (exclusive) {
    while (Node *child = new_parent->children.pop()) {
      if (child->queued) {
        child->parent->queue->erase(child->entry);
        node->queue->push(child->entry);
      }

      node->children.push(child);
      ink_release_assert(child != node);
      child->parent = node;
    }
  }

  new_parent->children.push(node);
  ink_release_assert(node != new_parent);
  node->parent = new_parent;

  if (node->active || !node->queue->empty()) {
    Node *current = node;
    while (current->parent != nullptr && !current->queued) {
      current->parent->queue->push(current->entry);
      current->queued = true;
      current         = current->parent;
    }
  }
}

template <typename T>
Node *