fn add_child()

in src/tree.rs [345:360]

• 14 lines of code
• 1 McCabe index (conditional complexity)

    fn add_child(&mut self, parent: usize, dir: ChildDir) {
        let mut node: TreeNode<P> = TreeNode::new(NodeType::Internal);
        node.set_parent(parent); // Link the parent to the child node.
        self.nodes.push(node);
        let len = self.nodes.len();

        // Link the child to the parent node.
        match dir {
            ChildDir::Left => {
                self.nodes[parent].set_lch(len - 1);
            }
            ChildDir::Right => {
                self.nodes[parent].set_rch(len - 1);
            }
        }
    }