epics_seq/
error.rs

1use thiserror::Error;
2
3/// Sequencer-level operation outcome (normal flow).
4/// Matches C sequencer pvStat semantics.
5#[derive(Debug, Clone, Copy, PartialEq, Eq)]
6#[repr(i32)]
7pub enum PvStat {
8    Ok = 0,
9    Error = -1,
10    Timeout = -2,
11    Disconnected = -3,
12}
13
14/// Operation completion record for pvGet/pvPut results.
15#[derive(Debug, Clone)]
16pub struct PvOpResult {
17    pub stat: PvStat,
18    pub severity: i16,
19    pub message: Option<String>,
20}
21
22impl Default for PvOpResult {
23    fn default() -> Self {
24        Self {
25            stat: PvStat::Ok,
26            severity: 0,
27            message: None,
28        }
29    }
30}
31
32#[derive(Debug, Error)]
33pub enum SeqError {
34    #[error("channel not connected: {0}")]
35    NotConnected(String),
36
37    #[error("channel access error: {0}")]
38    CaError(#[from] epics_base_rs::error::CaError),
39
40    #[error("invalid channel id: {0}")]
41    InvalidChannelId(usize),
42
43    #[error("invalid event flag id: {0}")]
44    InvalidEventFlagId(usize),
45
46    #[error("invalid state id: {0}")]
47    InvalidStateId(usize),
48
49    #[error("type mismatch for channel {channel}: expected {expected}, got {actual}")]
50    TypeMismatch {
51        channel: String,
52        expected: String,
53        actual: String,
54    },
55
56    #[error("program shutdown")]
57    Shutdown,
58
59    #[error("{0}")]
60    Other(String),
61}
62
63pub type SeqResult<T> = Result<T, SeqError>;
epics_seq/error.rs

epics_seq/
error.rs
