market_flow/model/
error.rs

1//! Errors returned when opening files or parsing NDJSON lines.
2
3/// Something went wrong while reading or parsing market data.
4#[derive(Debug)]
5pub enum MarketFlowError {
6    /// JSON on a line did not match the expected event shape.
7    DeserializationError(serde_json::error::Error),
8    /// The underlying file could not be read (missing path, permissions, etc.).
9    IOError(std::io::Error),
10}
11
12impl From<std::io::Error> for MarketFlowError {
13    fn from(error: std::io::Error) -> Self {
14        MarketFlowError::IOError(error)
15    }
16}
17
18impl From<serde_json::error::Error> for MarketFlowError {
19    fn from(value: serde_json::error::Error) -> Self {
20        MarketFlowError::DeserializationError(value)
21    }
22}
23
24impl std::error::Error for MarketFlowError {
25    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
26        match self {
27            MarketFlowError::DeserializationError(e) => Some(e),
28            MarketFlowError::IOError(e) => Some(e),
29        }
30    }
31}
32
33impl std::fmt::Display for MarketFlowError {
34    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
35        match self {
36            MarketFlowError::DeserializationError(e) => {
37                write!(f, "failed to parse market event: {e}")
38            }
39            MarketFlowError::IOError(e) => write!(f, "market data I/O error: {e}"),
40        }
41    }
42}
market_flow/model/error.rs

market_flow/model/
error.rs
