Enum Error 

#[non_exhaustive]
pub enum Error {
    ImageLoad {
        path: PathBuf,
        reason: String,
    },
    Codec {
        codec: String,
        message: String,
    },
    DimensionMismatch {
        expected: (usize, usize),
        actual: (usize, usize),
    },
    MetricCalculation {
        metric: String,
        reason: String,
    },
    Corpus(String),
    CsvImport {
        line: usize,
        reason: String,
    },
    InvalidQuality(f64),
    QualityBelowThreshold {
        metric: String,
        value: f64,
        threshold: f64,
    },
    UnsupportedFormat(String),
    Report(String),
    Cache(String),
    Io(Error),
    Json(Error),
    Csv(Error),
}

Errors that can occur during codec evaluation.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ImageLoad

Failed to load an image file.

Fields

path: PathBuf

Path to the image that failed to load.

reason: String

Reason for the failure.

Codec

Error from a codec during encoding or decoding.

Fields

codec: String

Codec identifier.

message: String

Error message from the codec.

DimensionMismatch

Image dimensions don’t match between reference and test images.

Fields

expected: (usize, usize)

Expected dimensions (width, height).

actual: (usize, usize)

Actual dimensions (width, height).

MetricCalculation

Failed to calculate a quality metric.

Fields

metric: String

Name of the metric that failed.

reason: String

Reason for the failure.

Corpus(String)

Error in corpus management.

CsvImport

Error importing CSV data.

Fields

line: usize

Line number where the error occurred.

reason: String

Reason for the failure.

InvalidQuality(f64)

Invalid quality value provided.

QualityBelowThreshold

Quality metric is below the specified threshold.

Fields

metric: String

Name of the quality metric.

value: f64

Actual value.

threshold: f64

Threshold that was not met.

UnsupportedFormat(String)

Unsupported image or codec format.

Report(String)

Error writing report files.

Cache(String)

Cache-related error.

Io(Error)

I/O error wrapper.

Json(Error)

JSON serialization/deserialization error.

Csv(Error)

CSV error.

Trait Implementations

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.