1 files changed, 19 insertions, 0 deletions
diff --git a/third_party/rust/tokio-util/src/cfg.rs b/third_party/rust/tokio-util/src/cfg.rs
new file mode 100644
index 0000000000..13fabd3638
--- /dev/null
+++ b/third_party/rust/tokio-util/src/cfg.rs
@@ -0,0 +1,19 @@
+macro_rules! cfg_codec {
+    ($($item:item)*) => {
+        $(
+            #[cfg(feature = "codec")]
+            #[cfg_attr(docsrs, doc(cfg(feature = "codec")))]
+            $item
+        )*
+    }
+}
+
+macro_rules! cfg_udp {
+    ($($item:item)*) => {
+        $(
+            #[cfg(all(feature = "udp", feature = "codec"))]
+            #[cfg_attr(docsrs, doc(cfg(all(feature = "udp", feature = "codec"))))]
+            $item
+        )*
+    }
+}