Simplify

streams/src/itemclone.rs

@@ -6,26 +6,26 @@ use futures_util::Future;
 use futures_util::Stream;
 use futures_util::StreamExt;
 use std::pin::Pin;
+use std::ptr::NonNull;
 use std::task::Context;
 use std::task::Poll;
 
-#[pin_project::pin_project]
-pub struct Itemclone<T, INP>
+pub struct Itemclone<'a, T, INP>
 where
     T: 'static,
 {
-    #[pin]
-    sender: Sender<T>,
+    sender: Pin<Box<Sender<T>>>,
     inp: INP,
-    send_fut: Option<Send<'static, T>>,
+    send_fut: Option<Send<'a, T>>,
 }
 
-impl<T, INP> Itemclone<T, INP> {
+impl<'a, T, INP> Itemclone<'a, T, INP> {
     pub fn new(inp: INP, sender: Sender<T>) -> Self
     where
         INP: Stream<Item = T> + Unpin,
         T: Clone + Unpin,
     {
+        let sender = Box::pin(sender);
         Self {
             sender,
             inp,
@@ -34,7 +34,7 @@ impl<T, INP> Itemclone<T, INP> {
     }
 }
 
-impl<T, INP> Itemclone<T, INP>
+impl<'a, T, INP> Itemclone<'a, T, INP>
 where
     INP: Stream<Item = T> + Unpin,
     T: Clone + Unpin,
@@ -43,7 +43,9 @@ where
         use Poll::*;
         match self.inp.poll_next_unpin(cx) {
             Ready(Some(item)) => {
-                let sender = unsafe { &mut *((&mut self.sender) as *mut Sender<T>) };
+                let sender = self.sender.as_mut().get_mut();
+                let mut ptr1 = NonNull::from(sender);
+                let sender = unsafe { ptr1.as_mut() };
                 self.send_fut = Some(sender.send(item.clone()));
                 Ready(Some(Ok(item)))
             }
@@ -66,7 +68,7 @@ where
     }
 }
 
-impl<T, INP> Stream for Itemclone<T, INP>
+impl<'a, T, INP> Stream for Itemclone<'a, T, INP>
 where
     INP: Stream<Item = T> + Unpin,
     T: Clone + Unpin,
@@ -75,7 +77,6 @@ where
 
     fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<Self::Item>> {
         use Poll::*;
-        let proj = self.as_mut().project();
         match self.send_fut.as_mut() {
             Some(fut) => match Self::send_copy(fut, cx) {
                 Ready(Ok(())) => self.poll_fresh(cx),