attempted right btree node rotation

fn rotate_right<A>(mut root: Nref<A>)-> Nref<A>{ //assumes root and leftofroot are some. I can't think of a way to take them as &ref Box<Node<A>> s, though, rightofleft might be None, and I need to be able to switch rightofleft with leftofroot.
	let leftofroot = &mut root.unwrap().left;
	let rightofleft = &mut root.unwrap().left.unwrap().right;
	// transitions are as follows
	// | root       | leftofroot  | rightofleft | -swap->
	// | leftofroot | root        | rightofleft | -swap->
	// | leftofroot | rightofleft | root        |
	// left is now pointed by the previous owner of root[it is the new root of the tree cutting in question], left's right is now on the leftref of the old root, and the old root is the right child of the new root. That is the rotation we want.
	swap(&mut root, leftofroot);
	swap(leftofroot, rightofleft);
	rightofleft.unwrap().update_deepness(); //the grid shows these will be some as long as the input requirements were met
	root       .unwrap().update_deepness();
	root
}