Manuel Raimann
45 lines
1.4 KiB
Rust
45 lines
1.4 KiB
Rust
//! Error types for the optimizer library.
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use thiserror::Error;
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/// The error type for TPE operations.
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#[derive(Debug, Error)]
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pub enum TpeError {
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/// Returned when the lower bound is greater than the upper bound.
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#[error("invalid bounds: low ({low}) must be less than or equal to high ({high})")]
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InvalidBounds {
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/// The lower bound value.
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low: f64,
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/// The upper bound value.
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high: f64,
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},
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/// Returned when log scale is used with non-positive bounds.
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#[error("invalid log bounds: low must be positive for log scale")]
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InvalidLogBounds,
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/// Returned when step size is not positive.
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#[error("invalid step: step must be positive")]
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InvalidStep,
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/// Returned when categorical choices are empty.
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#[error("categorical choices cannot be empty")]
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EmptyChoices,
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/// Returned when a parameter is suggested with a different configuration.
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#[error("parameter conflict for '{name}': {reason}")]
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ParameterConflict {
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/// The name of the conflicting parameter.
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name: String,
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/// The reason for the conflict.
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reason: String,
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},
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/// Returned when requesting the best trial but no trials have completed.
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#[error("no completed trials available")]
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NoCompletedTrials,
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}
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/// A specialized Result type for TPE operations.
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pub type Result<T> = std::result::Result<T, TpeError>;
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