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
use std::error;
use std::fmt;
use std::io;
use std::num;
use std::str;
use std::convert::From;
use serialport;
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Debug)]
pub enum Error {
Io(io::Error),
Serial(serialport::Error),
Num(num::ParseIntError),
Utf8(str::Utf8Error),
Other
}
impl Error {
pub fn is_timeout(&self) -> bool {
match *self {
Error::Io(ref e) if e.kind() == io::ErrorKind::TimedOut => true,
_ => false
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Io(ref cause) => write!(f, "I/O Error: {}", cause),
Error::Serial(ref cause) => write!(f, "Serial Error: {}", cause),
Error::Num(ref cause) => write!(f, "Byte Parse Error: {}", cause),
Error::Utf8(ref cause) => write!(f, "String Parse Error: {}", cause),
Error::Other => write!(f, "Unknown error")
}
}
}
impl error::Error for Error {
fn cause(&self) -> Option<&dyn error::Error> {
match *self {
Error::Io(ref cause) => Some(cause),
Error::Serial(ref cause) => Some(cause),
Error::Num(ref cause) => Some(cause),
Error::Utf8(ref cause) => Some(cause),
Error::Other => None
}
}
}
impl From<io::Error> for Error {
fn from(cause: io::Error) -> Error {
Error::Io(cause)
}
}
impl From<serialport::Error> for Error {
fn from(cause: serialport::Error) -> Error {
match cause.kind() {
serialport::ErrorKind::Io(_) => Error::Io(io::Error::from(cause)),
_ => Error::Serial(cause)
}
}
}
impl From<num::ParseIntError> for Error {
fn from(cause: num::ParseIntError) -> Error {
Error::Num(cause)
}
}
impl From<str::Utf8Error> for Error {
fn from(cause: str::Utf8Error) -> Error {
Error::Utf8(cause)
}
}