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use futures_lite::{io, prelude::*};
use std::fmt::{self, Debug};
use std::pin::Pin;
use std::task::{Context, Poll};
pub struct Connection {
inner: Box<dyn InnerConnection>,
}
impl Debug for Connection {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let inner = "Box<dyn Asyncread + AsyncWrite + Send + Sync + Unpin>";
f.debug_struct("Connection")
.field(&"inner", &inner)
.finish()
}
}
impl Connection {
pub fn new<T>(t: T) -> Self
where
T: AsyncRead + AsyncWrite + Send + Sync + Unpin + 'static,
{
Self { inner: Box::new(t) }
}
}
pub trait InnerConnection: AsyncRead + AsyncWrite + Send + Sync + Unpin {}
impl<T: AsyncRead + AsyncWrite + Send + Sync + Unpin> InnerConnection for T {}
impl AsyncRead for Connection {
fn poll_read(
mut self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &mut [u8],
) -> Poll<io::Result<usize>> {
Pin::new(&mut self.inner).poll_read(cx, buf)
}
}
impl AsyncWrite for Connection {
fn poll_write(
mut self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8],
) -> Poll<io::Result<usize>> {
Pin::new(&mut self.inner).poll_write(cx, buf)
}
fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
Pin::new(&mut self.inner).poll_flush(cx)
}
fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
Pin::new(&mut self.inner).poll_close(cx)
}
}