checkpoint

src/network/stream.rs

@@ -0,0 +1,52 @@
+use async_std::task::{Context, Poll};
+use futures::io;
+use futures::io::{AsyncRead, AsyncWrite};
+use std::pin::Pin;
+use std::sync::Arc;
+
+pub trait Streamlike: AsyncRead + AsyncWrite + Send + Sync + Unpin {}
+
+#[derive(Clone)]
+pub struct GenericStream {
+    internal: Arc<Box<dyn Streamlike>>,
+}
+
+impl AsyncRead for GenericStream {
+    fn poll_read(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &mut [u8],
+    ) -> Poll<io::Result<usize>> {
+        let base = Pin::into_inner(self);
+        Pin::new(base).poll_read(cx, buf)
+    }
+}
+
+impl AsyncWrite for GenericStream {
+    fn poll_write(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+        buf: &[u8],
+    ) -> Poll<io::Result<usize>> {
+        let base = Pin::into_inner(self);
+        Pin::new(base).poll_write(cx, buf)
+    }
+
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
+        let base = Pin::into_inner(self);
+        Pin::new(base).poll_flush(cx)
+    }
+
+    fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
+        let base = Pin::into_inner(self);
+        Pin::new(base).poll_close(cx)
+    }
+}
+
+impl<T: Streamlike + 'static> From<T> for GenericStream {
+    fn from(x: T) -> GenericStream {
+        GenericStream {
+            internal: Arc::new(Box::new(x)),
+        }
+    }
+}