wickra_backtest_core/
error.rs

1//! Error types for the backtest engine.
2//!
3//! All fallible paths return [`BacktestError`]; bindings map it to a stable
4//! integer code so no panic ever crosses an FFI boundary.
5
6use thiserror::Error;
7
8/// An error raised while parsing a strategy spec or running a backtest.
9#[derive(Debug, Error)]
10#[non_exhaustive]
11pub enum BacktestError {
12    /// The strategy spec could not be parsed or was structurally invalid.
13    #[error("invalid strategy spec: {0}")]
14    InvalidSpec(String),
15
16    /// An indicator referenced in the spec is unknown to the registry.
17    #[error("unknown indicator type: {0}")]
18    UnknownIndicator(String),
19
20    /// An indicator was constructed with the wrong number or value of parameters.
21    #[error("invalid parameters for indicator {indicator}: {reason}")]
22    InvalidParams {
23        /// The indicator type name.
24        indicator: String,
25        /// Why the parameters were rejected.
26        reason: String,
27    },
28
29    /// A rule referenced an indicator name that is not declared in `indicators`.
30    #[error("rule references undeclared indicator: {0}")]
31    UndeclaredRef(String),
32
33    /// The input data was empty or malformed.
34    #[error("invalid input data: {0}")]
35    InvalidData(String),
36}
37
38/// Convenience result alias for the engine.
39pub type Result<T> = core::result::Result<T, BacktestError>;
wickra_backtest_core/error.rs

wickra_backtest_core/
error.rs
