105 lines
2.5 KiB
Rust
105 lines
2.5 KiB
Rust
//! # Custom warnings and errors
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use std::error::Error;
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use std::fmt;
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use serde::{Deserialize, Serialize};
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/// Generic error to be raised when something goes wrong.
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#[derive(Debug, Serialize, Deserialize)]
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pub struct Failed {
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err: FailedError,
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msg: String,
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}
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/// Type of error
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#[derive(Copy, Clone, Debug, Serialize, Deserialize)]
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pub enum FailedError {
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/// Can't fit algorithm to data
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FitFailed = 1,
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/// Can't predict new values
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PredictFailed,
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/// Can't transform data
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TransformFailed,
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/// Can't find an item
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FindFailed,
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/// Can't decompose a matrix
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DecompositionFailed,
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/// Can't solve for x
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SolutionFailed,
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}
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impl Failed {
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///get type of error
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#[inline]
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pub fn error(&self) -> FailedError {
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self.err
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}
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/// new instance of `FailedError::FitError`
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pub fn fit(msg: &str) -> Self {
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Failed {
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err: FailedError::FitFailed,
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msg: msg.to_string(),
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}
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}
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/// new instance of `FailedError::PredictFailed`
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pub fn predict(msg: &str) -> Self {
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Failed {
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err: FailedError::PredictFailed,
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msg: msg.to_string(),
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}
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}
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/// new instance of `FailedError::TransformFailed`
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pub fn transform(msg: &str) -> Self {
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Failed {
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err: FailedError::TransformFailed,
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msg: msg.to_string(),
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}
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}
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/// new instance of `err`
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pub fn because(err: FailedError, msg: &str) -> Self {
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Failed {
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err: err,
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msg: msg.to_string(),
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}
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}
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}
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impl PartialEq for FailedError {
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#[inline(always)]
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fn eq(&self, rhs: &Self) -> bool {
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*self as u8 == *rhs as u8
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}
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}
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impl PartialEq for Failed {
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#[inline(always)]
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fn eq(&self, rhs: &Self) -> bool {
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self.err == rhs.err && self.msg == rhs.msg
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}
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}
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impl fmt::Display for FailedError {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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let failed_err_str = match self {
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FailedError::FitFailed => "Fit failed",
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FailedError::PredictFailed => "Predict failed",
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FailedError::TransformFailed => "Transform failed",
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FailedError::FindFailed => "Find failed",
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FailedError::DecompositionFailed => "Decomposition failed",
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FailedError::SolutionFailed => "Can't find solution",
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};
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write!(f, "{}", failed_err_str)
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}
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}
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impl fmt::Display for Failed {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}: {}", self.err, self.msg)
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}
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}
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impl Error for Failed {}
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