plc_comm_hostlink/
error.rs

1use thiserror::Error;
2
3const ERROR_CODE_MESSAGES: &[(&str, &str)] = &[
4    ("E0", "Abnormal device No."),
5    ("E1", "Abnormal command"),
6    ("E2", "Program not registered"),
7    ("E4", "Write disabled"),
8    ("E5", "Unit error"),
9    ("E6", "No comments"),
10];
11
12pub fn decode_error_code(code: &str) -> &'static str {
13    ERROR_CODE_MESSAGES
14        .iter()
15        .find_map(|(key, value)| (*key == code).then_some(*value))
16        .unwrap_or("Unknown error")
17}
18
19#[derive(Debug, Error)]
20pub enum HostLinkError {
21    #[error("{0}")]
22    Protocol(String),
23    #[error("{0}")]
24    Connection(String),
25    #[error("{code}: {message} (response={response:?})")]
26    Plc {
27        code: String,
28        response: String,
29        message: &'static str,
30    },
31}
32
33impl HostLinkError {
34    pub fn protocol(message: impl Into<String>) -> Self {
35        Self::Protocol(message.into())
36    }
37
38    pub fn connection(message: impl Into<String>) -> Self {
39        Self::Connection(message.into())
40    }
41
42    pub fn plc(code: impl Into<String>, response: impl Into<String>) -> Self {
43        let code = code.into();
44        Self::Plc {
45            message: decode_error_code(&code),
46            response: response.into(),
47            code,
48        }
49    }
50}
51
52impl From<std::io::Error> for HostLinkError {
53    fn from(value: std::io::Error) -> Self {
54        Self::connection(value.to_string())
55    }
56}
plc_comm_hostlink/error.rs

plc_comm_hostlink/
error.rs
