Make access to inner of futures::io::{BufReader,BufWriter} not require

inner trait bound

Author: ethe

futures-util/src/io/buf_reader.rs

@@ -39,6 +39,10 @@ pin_project! {
     }
 }
 
+impl<R> BufReader<R> {
+    delegate_access_inner!(inner, R, ());
+}
+
 impl<R: AsyncRead> BufReader<R> {
     /// Creates a new `BufReader` with a default buffer capacity. The default is currently 8 KB,
     /// but may change in the future.
@@ -53,8 +57,6 @@ impl<R: AsyncRead> BufReader<R> {
         Self { inner, buffer: buffer.into_boxed_slice(), pos: 0, cap: 0 }
     }
 
-    delegate_access_inner!(inner, R, ());
-
     /// Returns a reference to the internally buffered data.
     ///
     /// Unlike `fill_buf`, this will not attempt to fill the buffer if it is empty.

futures-util/src/io/buf_writer.rs

@@ -39,6 +39,10 @@ pin_project! {
     }
 }
 
+impl<W> BufWriter<W> {
+    delegate_access_inner!(inner, W, ());
+}
+
 impl<W: AsyncWrite> BufWriter<W> {
     /// Creates a new `BufWriter` with a default buffer capacity. The default is currently 8 KB,
     /// but may change in the future.
@@ -79,8 +83,6 @@ impl<W: AsyncWrite> BufWriter<W> {
         Poll::Ready(ret)
     }
 
-    delegate_access_inner!(inner, W, ());
-
     /// Returns a reference to the internally buffered data.
     pub fn buffer(&self) -> &[u8] {
         &self.buf