1 files changed, 71 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..4035255aff
--- /dev/null
+++ b/third_party/rust/tokio-util/src/cfg.rs
@@ -0,0 +1,71 @@
+macro_rules! cfg_codec {
+    ($($item:item)*) => {
+        $(
+            #[cfg(feature = "codec")]
+            #[cfg_attr(docsrs, doc(cfg(feature = "codec")))]
+            $item
+        )*
+    }
+}
+
+macro_rules! cfg_compat {
+    ($($item:item)*) => {
+        $(
+            #[cfg(feature = "compat")]
+            #[cfg_attr(docsrs, doc(cfg(feature = "compat")))]
+            $item
+        )*
+    }
+}
+
+macro_rules! cfg_net {
+    ($($item:item)*) => {
+        $(
+            #[cfg(all(feature = "net", feature = "codec"))]
+            #[cfg_attr(docsrs, doc(cfg(all(feature = "net", feature = "codec"))))]
+            $item
+        )*
+    }
+}
+
+macro_rules! cfg_io {
+    ($($item:item)*) => {
+        $(
+            #[cfg(feature = "io")]
+            #[cfg_attr(docsrs, doc(cfg(feature = "io")))]
+            $item
+        )*
+    }
+}
+
+cfg_io! {
+    macro_rules! cfg_io_util {
+        ($($item:item)*) => {
+            $(
+                #[cfg(feature = "io-util")]
+                #[cfg_attr(docsrs, doc(cfg(feature = "io-util")))]
+                $item
+            )*
+        }
+    }
+}
+
+macro_rules! cfg_rt {
+    ($($item:item)*) => {
+        $(
+            #[cfg(feature = "rt")]
+            #[cfg_attr(docsrs, doc(cfg(feature = "rt")))]
+            $item
+        )*
+    }
+}
+
+macro_rules! cfg_time {
+    ($($item:item)*) => {
+        $(
+            #[cfg(feature = "time")]
+            #[cfg_attr(docsrs, doc(cfg(feature = "time")))]
+            $item
+        )*
+    }
+}