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#![forbid(unsafe_code)]
#![deny(missing_debug_implementations, nonstandard_style)]
#![warn(
missing_docs,
missing_doc_code_examples,
unreachable_pub,
rust_2018_idioms
)]
use async_std::io::{self, BufRead, Read, Write};
use async_std::task::{Context, Poll};
use std::pin::Pin;
pin_project_lite::pin_project! {
#[derive(Debug)]
pub struct Duplex<R, W> {
#[pin]
reader: R,
#[pin]
writer: W,
}
}
impl<R, W> Duplex<R, W> {
pub fn new(reader: R, writer: W) -> Self {
Self { reader, writer }
}
pub fn into_inner(self) -> (R, W) {
(self.reader, self.writer)
}
}
impl<R: Read, W> Read for Duplex<R, W> {
fn poll_read(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &mut [u8],
) -> Poll<io::Result<usize>> {
let this = self.project();
this.reader.poll_read(cx, buf)
}
}
impl<R, W: Write> Write for Duplex<R, W> {
fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8],
) -> Poll<io::Result<usize>> {
let this = self.project();
this.writer.poll_write(cx, buf)
}
fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
let this = self.project();
this.writer.poll_flush(cx)
}
fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
let this = self.project();
this.writer.poll_close(cx)
}
}
impl<R: BufRead, W> BufRead for Duplex<R, W> {
fn poll_fill_buf(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<&[u8]>> {
let this = self.project();
this.reader.poll_fill_buf(cx)
}
fn consume(self: Pin<&mut Self>, amt: usize) {
let this = self.project();
this.reader.consume(amt)
}
}
impl<R, W> Clone for Duplex<R, W>
where
R: Clone,
W: Clone,
{
fn clone(&self) -> Self {
Self {
reader: self.reader.clone(),
writer: self.writer.clone(),
}
}
}