Do not use cfg_if for embedded-hal-async feature gates.

Old code used `cfg_if!` because rustc still parses code inside disabled cfg's, and Rust stable at that time couldn't parse the new GAT where-clause location. This is not the case anymore.

1 files changed, 50 insertions, 49 deletions

diff --git a/embassy-nrf/src/uarte.rs b/embassy-nrf/src/uarte.rs
index 4347ea558..c250e24ca 100644
--- a/embassy-nrf/src/uarte.rs
+++ b/embassy-nrf/src/uarte.rs
@@ -1073,78 +1073,79 @@ mod eh1 {
     }
 }
 
-cfg_if::cfg_if! {
-    if #[cfg(all(feature = "unstable-traits", feature = "nightly", feature = "_todo_embedded_hal_serial"))] {
-        use core::future::Future;
+#[cfg(all(
+    feature = "unstable-traits",
+    feature = "nightly",
+    feature = "_todo_embedded_hal_serial"
+))]
+mod eha {
+    use core::future::Future;
 
-        impl<'d, T: Instance> embedded_hal_async::serial::Read for Uarte<'d, T> {
-            type ReadFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+    use super::*;
 
-            fn read<'a>(&'a mut self, buffer: &'a mut [u8]) -> Self::ReadFuture<'a> {
-                self.read(buffer)
-            }
+    impl<'d, T: Instance> embedded_hal_async::serial::Read for Uarte<'d, T> {
+        type ReadFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+
+        fn read<'a>(&'a mut self, buffer: &'a mut [u8]) -> Self::ReadFuture<'a> {
+            self.read(buffer)
         }
+    }
 
-        impl<'d, T: Instance> embedded_hal_async::serial::Write for Uarte<'d, T> {
-            type WriteFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+    impl<'d, T: Instance> embedded_hal_async::serial::Write for Uarte<'d, T> {
+        type WriteFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
 
-            fn write<'a>(&'a mut self, buffer: &'a [u8]) -> Self::WriteFuture<'a> {
-                self.write(buffer)
-            }
+        fn write<'a>(&'a mut self, buffer: &'a [u8]) -> Self::WriteFuture<'a> {
+            self.write(buffer)
+        }
 
-            type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+        type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
 
-            fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
-                async move { Ok(()) }
-            }
+        fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
+            async move { Ok(()) }
         }
+    }
 
-        impl<'d, T: Instance> embedded_hal_async::serial::Write for UarteTx<'d, T> {
-            type WriteFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+    impl<'d, T: Instance> embedded_hal_async::serial::Write for UarteTx<'d, T> {
+        type WriteFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
 
-            fn write<'a>(&'a mut self, buffer: &'a [u8]) -> Self::WriteFuture<'a> {
-                self.write(buffer)
-            }
+        fn write<'a>(&'a mut self, buffer: &'a [u8]) -> Self::WriteFuture<'a> {
+            self.write(buffer)
+        }
 
-            type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+        type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
 
-            fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
-                async move { Ok(()) }
-            }
+        fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
+            async move { Ok(()) }
         }
+    }
 
-        impl<'d, T: Instance> embedded_hal_async::serial::Read for UarteRx<'d, T> {
-            type ReadFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+    impl<'d, T: Instance> embedded_hal_async::serial::Read for UarteRx<'d, T> {
+        type ReadFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
 
-            fn read<'a>(&'a mut self, buffer: &'a mut [u8]) -> Self::ReadFuture<'a> {
-                self.read(buffer)
-            }
+        fn read<'a>(&'a mut self, buffer: &'a mut [u8]) -> Self::ReadFuture<'a> {
+            self.read(buffer)
         }
+    }
 
-        impl<'d, U: Instance, T: TimerInstance> embedded_hal_async::serial::Read
-            for UarteWithIdle<'d, U, T>
-        {
-            type ReadFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+    impl<'d, U: Instance, T: TimerInstance> embedded_hal_async::serial::Read for UarteWithIdle<'d, U, T> {
+        type ReadFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
 
-            fn read<'a>(&'a mut self, buffer: &'a mut [u8]) -> Self::ReadFuture<'a> {
-                self.read(buffer)
-            }
+        fn read<'a>(&'a mut self, buffer: &'a mut [u8]) -> Self::ReadFuture<'a> {
+            self.read(buffer)
         }
+    }
 
-        impl<'d, U: Instance, T: TimerInstance> embedded_hal_async::serial::Write
-            for UarteWithIdle<'d, U, T>
-        {
-            type WriteFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+    impl<'d, U: Instance, T: TimerInstance> embedded_hal_async::serial::Write for UarteWithIdle<'d, U, T> {
+        type WriteFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
 
-            fn write<'a>(&'a mut self, buffer: &'a [u8]) -> Self::WriteFuture<'a> {
-                self.write(buffer)
-            }
+        fn write<'a>(&'a mut self, buffer: &'a [u8]) -> Self::WriteFuture<'a> {
+            self.write(buffer)
+        }
 
-            type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
+        type FlushFuture<'a> = impl Future<Output = Result<(), Self::Error>> + 'a where Self: 'a;
 
-            fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
-                async move { Ok(()) }
-            }
+        fn flush<'a>(&'a mut self) -> Self::FlushFuture<'a> {
+            async move { Ok(()) }
         }
     }
 }