1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
use super::{SendError, Sender, TrySendError, UnboundedSender};
use futures_core::task::{Context, Poll};
use futures_sink::Sink;
use std::pin::Pin;
impl<T> Sink<T> for Sender<T> {
type Error = SendError;
fn poll_ready(
mut self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
(*self).poll_ready(cx)
}
fn start_send(
mut self: Pin<&mut Self>,
msg: T,
) -> Result<(), Self::Error> {
(*self).start_send(msg)
}
fn poll_flush(
mut self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
match (*self).poll_ready(cx) {
Poll::Ready(Err(ref e)) if e.is_disconnected() => {
Poll::Ready(Ok(()))
}
x => x,
}
}
fn poll_close(
mut self: Pin<&mut Self>,
_: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
self.disconnect();
Poll::Ready(Ok(()))
}
}
impl<T> Sink<T> for UnboundedSender<T> {
type Error = SendError;
fn poll_ready(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
UnboundedSender::poll_ready(&*self, cx)
}
fn start_send(
mut self: Pin<&mut Self>,
msg: T,
) -> Result<(), Self::Error> {
UnboundedSender::start_send(&mut *self, msg)
}
fn poll_flush(
self: Pin<&mut Self>,
_: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
Poll::Ready(Ok(()))
}
fn poll_close(
mut self: Pin<&mut Self>,
_: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
self.disconnect();
Poll::Ready(Ok(()))
}
}
impl<T> Sink<T> for &UnboundedSender<T> {
type Error = SendError;
fn poll_ready(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
UnboundedSender::poll_ready(*self, cx)
}
fn start_send(self: Pin<&mut Self>, msg: T) -> Result<(), Self::Error> {
self.unbounded_send(msg)
.map_err(TrySendError::into_send_error)
}
fn poll_flush(
self: Pin<&mut Self>,
_: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
Poll::Ready(Ok(()))
}
fn poll_close(
self: Pin<&mut Self>,
_: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
self.close_channel();
Poll::Ready(Ok(()))
}
}