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use bytes::Buf;
use futures::{Async, Poll, Stream};
use BufStream;
pub fn stream<T>(stream: T) -> FromStream<T>
where
T: Stream,
T::Item: Buf,
{
FromStream { stream }
}
#[derive(Debug)]
pub struct FromStream<T> {
stream: T,
}
impl<T> BufStream for FromStream<T>
where
T: Stream,
T::Item: Buf,
{
type Item = T::Item;
type Error = T::Error;
fn poll_buf(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
self.stream.poll()
}
}
#[derive(Debug)]
pub struct IntoStream<T> {
buf: T,
}
impl<T> IntoStream<T> {
pub fn new(buf: T) -> Self {
IntoStream { buf }
}
pub fn get_ref(&self) -> &T {
&self.buf
}
pub fn get_mut(&mut self) -> &mut T {
&mut self.buf
}
pub fn into_inner(self) -> T {
self.buf
}
}
impl<T: BufStream> Stream for IntoStream<T> {
type Item = T::Item;
type Error = T::Error;
fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
match self.buf.poll_buf()? {
Async::Ready(Some(buf)) => Ok(Async::Ready(Some(buf))),
Async::Ready(None) => Ok(Async::Ready(None)),
Async::NotReady => Ok(Async::NotReady),
}
}
}