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
use std::error::Error;
use std::fmt;
#[derive(Debug)]
pub struct SendError<T>(pub T);
impl<T> fmt::Display for SendError<T> {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(fmt, "channel closed")
}
}
impl<T: fmt::Debug> std::error::Error for SendError<T> {}
#[derive(Debug)]
pub enum TrySendError<T> {
Full(T),
Closed(T),
}
impl<T: fmt::Debug> Error for TrySendError<T> {}
impl<T> fmt::Display for TrySendError<T> {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
fmt,
"{}",
match self {
TrySendError::Full(..) => "no available capacity",
TrySendError::Closed(..) => "channel closed",
}
)
}
}
impl<T> From<SendError<T>> for TrySendError<T> {
fn from(src: SendError<T>) -> TrySendError<T> {
TrySendError::Closed(src.0)
}
}
#[derive(Debug)]
pub struct RecvError(());
impl fmt::Display for RecvError {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(fmt, "channel closed")
}
}
impl Error for RecvError {}
#[derive(Debug, PartialEq)]
pub enum TryRecvError {
Empty,
Closed,
}
impl fmt::Display for TryRecvError {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
fmt,
"{}",
match self {
TryRecvError::Empty => "channel empty",
TryRecvError::Closed => "channel closed",
}
)
}
}
impl Error for TryRecvError {}
#[derive(Debug)]
pub struct ClosedError(());
impl ClosedError {
pub(crate) fn new() -> ClosedError {
ClosedError(())
}
}
impl fmt::Display for ClosedError {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(fmt, "channel closed")
}
}
impl Error for ClosedError {}
cfg_time! {
#[derive(Debug)]
pub enum SendTimeoutError<T> {
Timeout(T),
Closed(T),
}
impl<T: fmt::Debug> Error for SendTimeoutError<T> {}
impl<T> fmt::Display for SendTimeoutError<T> {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
fmt,
"{}",
match self {
SendTimeoutError::Timeout(..) => "timed out waiting on send operation",
SendTimeoutError::Closed(..) => "channel closed",
}
)
}
}
}