Enum LoadError 

pub enum LoadError {
    NoSources,
    MissingModules(Vec<String>),
    DiagnosticThreshold {
        report: DiagnosticReport,
    },
    Source(Box<dyn Error + Send + Sync>),
    Io(Error),
}

Errors returned by Loader::load and the free function load.

All variants carry enough context for callers to present useful error messages. The Display implementation produces human-readable text for each case.

Variants

NoSources

No Sources were configured on the Loader.

MissingModules(Vec<String>)

One or more explicitly requested modules were not found after resolution.

The contained Vec lists the missing module names.

DiagnosticThreshold

A diagnostic exceeded the configured fail-at severity threshold.

report contains every diagnostic collected during the load, not only those at or above the failure threshold. The diagnostics are ordered by pipeline phase, code, effective severity, module, stable source identity and label, half-open source range, and message. The report retains every source document needed to derive locations after the failed MIB has been dropped.

See DiagnosticConfig for threshold configuration.

Fields

report: DiagnosticReport

All diagnostics and their retained sources from the failed load.

Source(Box<dyn Error + Send + Sync>)

A Source implementation returned a custom error.

Use LoadError::from_source to construct this variant from an arbitrary error type.

Io(Error)

An I/O error occurred while reading MIB files from disk.

Implementations

impl LoadError

pub fn from_source(err: impl Error + Send + Sync + 'static) -> Self

Wrap an arbitrary error as a LoadError::Source.

Useful for custom Source implementations that need to return domain-specific errors through the loading pipeline.

Trait Implementations

impl Debug for LoadError

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

Formats the value using the given formatter.

impl Display for LoadError

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

Formats the value using the given formatter.

impl Error for LoadError

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 LoadError

fn from(source: Error) -> Self

Converts to this type from the input type.