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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
#![allow(dead_code)]
use std::{
io,
marker::Unpin,
pin::Pin,
task::{self, Poll},
};
use {futures_03_dep::ready, partial_io::PartialOp};
pub struct PartialAsyncRead<R> {
inner: R,
ops: Box<dyn Iterator<Item = PartialOp> + Send>,
}
impl<R> PartialAsyncRead<R>
where
R: Unpin,
{
pub fn new<I>(inner: R, ops: I) -> Self
where
I: IntoIterator<Item = PartialOp>,
I::IntoIter: Send + 'static,
{
PartialAsyncRead {
inner,
ops: Box::new(ops.into_iter()),
}
}
}
/*impl<R> tokio_02_dep::io::AsyncRead for PartialAsyncRead<R>
where
R: tokio_02_dep::io::AsyncRead + Unpin,
{
fn poll_read(
mut self: Pin<&mut Self>,
cx: &mut task::Context<'_>,
buf: &mut [u8],
) -> Poll<io::Result<usize>> {
match self.ops.next() {
Some(PartialOp::Limited(n)) => {
let len = std::cmp::min(n, buf.len());
Pin::new(&mut self.inner).poll_read(cx, &mut buf[..len])
}
Some(PartialOp::Err(err)) => {
if err == io::ErrorKind::WouldBlock {
cx.waker().wake_by_ref();
Poll::Pending
} else {
Err(io::Error::new(
err,
"error during read, generated by partial-io",
))
.into()
}
}
Some(PartialOp::Unlimited) | None => Pin::new(&mut self.inner).poll_read(cx, buf),
}
}
}
impl<R> tokio_03_dep::io::AsyncRead for PartialAsyncRead<R>
where
R: tokio_03_dep::io::AsyncRead + Unpin,
{
fn poll_read(
mut self: Pin<&mut Self>,
cx: &mut task::Context<'_>,
buf: &mut tokio_03_dep::io::ReadBuf<'_>,
) -> Poll<io::Result<()>> {
match self.ops.next() {
Some(PartialOp::Limited(n)) => {
let len = std::cmp::min(n, buf.remaining());
buf.initialize_unfilled();
let mut sub_buf = buf.take(len);
ready!(Pin::new(&mut self.inner).poll_read(cx, &mut sub_buf))?;
let filled = sub_buf.filled().len();
buf.advance(filled);
Poll::Ready(Ok(()))
}
Some(PartialOp::Err(err)) => {
if err == io::ErrorKind::WouldBlock {
cx.waker().wake_by_ref();
Poll::Pending
} else {
Err(io::Error::new(
err,
"error during read, generated by partial-io",
))
.into()
}
}
Some(PartialOp::Unlimited) | None => Pin::new(&mut self.inner).poll_read(cx, buf),
}
}
}*/
impl<R> tokio_dep::io::AsyncRead for PartialAsyncRead<R>
where
R: tokio_dep::io::AsyncRead + Unpin,
{
fn poll_read(
mut self: Pin<&mut Self>,
cx: &mut task::Context<'_>,
buf: &mut tokio_dep::io::ReadBuf<'_>,
) -> Poll<io::Result<()>> {
match self.ops.next() {
Some(PartialOp::Limited(n)) => {
let len = std::cmp::min(n, buf.remaining());
buf.initialize_unfilled();
let mut sub_buf = buf.take(len);
ready!(Pin::new(&mut self.inner).poll_read(cx, &mut sub_buf))?;
let filled = sub_buf.filled().len();
buf.advance(filled);
Poll::Ready(Ok(()))
}
Some(PartialOp::Err(err)) => {
if err == io::ErrorKind::WouldBlock {
cx.waker().wake_by_ref();
Poll::Pending
} else {
Err(io::Error::new(
err,
"error during read, generated by partial-io",
))
.into()
}
}
Some(PartialOp::Unlimited) | None => Pin::new(&mut self.inner).poll_read(cx, buf),
}
}
}
pub struct FuturesPartialAsyncRead<R> {
inner: R,
ops: Box<dyn Iterator<Item = PartialOp> + Send>,
}
impl<R> FuturesPartialAsyncRead<R>
where
R: crate::futures::io::AsyncRead + Unpin,
{
pub fn new<I>(inner: R, ops: I) -> Self
where
I: IntoIterator<Item = PartialOp>,
I::IntoIter: Send + 'static,
{
FuturesPartialAsyncRead {
inner,
ops: Box::new(ops.into_iter()),
}
}
}
impl<R> crate::futures::io::AsyncRead for FuturesPartialAsyncRead<R>
where
R: crate::futures::io::AsyncRead + Unpin,
{
fn poll_read(
mut self: Pin<&mut Self>,
cx: &mut task::Context<'_>,
buf: &mut [u8],
) -> Poll<io::Result<usize>> {
match self.ops.next() {
Some(PartialOp::Limited(n)) => {
let len = std::cmp::min(n, buf.len());
Pin::new(&mut self.inner).poll_read(cx, &mut buf[..len])
}
Some(PartialOp::Err(err)) => {
if err == io::ErrorKind::WouldBlock {
cx.waker().wake_by_ref();
Poll::Pending
} else {
Err(io::Error::new(
err,
"error during read, generated by partial-io",
))
.into()
}
}
Some(PartialOp::Unlimited) | None => Pin::new(&mut self.inner).poll_read(cx, buf),
}
}
}
|
