Method transform_down_impl

datafusion/common/src/tree_node.rs:236–241

(
            node: N,
            f: &mut F,
        )

    ) -> Result<Transformed<Self>> {
        #[cfg_attr(feature = "recursive_protection", recursive::recursive)]
        fn transform_down_impl<N: TreeNode, F: FnMut(N) -> Result<Transformed<N>>>(
            node: N,
            f: &mut F,
        ) -> Result<Transformed<N>> {
            f(node)?.transform_children(|n| n.map_children(|c| transform_down_impl(c, f)))
        }

        transform_down_impl(self, &mut f)
    }