libsvm-rs 0.8.0

FFI-free Rust implementation of LIBSVM-compatible SVM training and prediction
Documentation 
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//! Error types returned by `libsvm-rs`.
//!
//! Loader errors are part of the crate's untrusted-input boundary. Problem
//! files report line-oriented parse failures with [`SvmError::ParseError`],
//! model files report structural format failures with
//! [`SvmError::ModelFormatError`], and filesystem/reader failures use
//! [`SvmError::Io`]. Training parameter validation uses
//! [`SvmError::InvalidParameter`].

/// Errors returned by libsvm-rs operations.
#[derive(Debug, thiserror::Error)]
pub enum SvmError {
    /// An SVM parameter failed validation.
    #[error("invalid parameter: {0}")]
    InvalidParameter(String),

    /// A parse error occurred while reading a problem or model file.
    #[error("parse error at line {line}: {message}")]
    ParseError {
        /// 1-based line number where the error occurred.
        line: usize,
        /// Description of the parse failure.
        message: String,
    },

    /// A model file could not be loaded due to format issues.
    #[error("model format error: {0}")]
    ModelFormatError(String),

    /// An I/O error occurred.
    #[error("I/O error: {0}")]
    Io(#[from] std::io::Error),
}