1 files changed, 44 insertions, 0 deletions
diff --git a/third_party/rust/hyper/src/cfg.rs b/third_party/rust/hyper/src/cfg.rs
new file mode 100644
index 0000000000..71a5351d21
--- /dev/null
+++ b/third_party/rust/hyper/src/cfg.rs
@@ -0,0 +1,44 @@
+macro_rules! cfg_feature {
+    (
+        #![$meta:meta]
+        $($item:item)*
+    ) => {
+        $(
+            #[cfg($meta)]
+            #[cfg_attr(docsrs, doc(cfg($meta)))]
+            $item
+        )*
+    }
+}
+
+macro_rules! cfg_proto {
+    ($($item:item)*) => {
+        cfg_feature! {
+            #![all(
+                any(feature = "http1", feature = "http2"),
+                any(feature = "client", feature = "server"),
+            )]
+            $($item)*
+        }
+    }
+}
+
+cfg_proto! {
+    macro_rules! cfg_client {
+        ($($item:item)*) => {
+            cfg_feature! {
+                #![feature = "client"]
+                $($item)*
+            }
+        }
+    }
+
+    macro_rules! cfg_server {
+        ($($item:item)*) => {
+            cfg_feature! {
+                #![feature = "server"]
+                $($item)*
+            }
+        }
+    }
+}