Enum EvalError 

pub enum EvalError {
    EmptyGrammar,
    EmptyCorpus,
    EmptySample {
        source: &'static str,
    },
    NonTerminating {
        rule: String,
    },
    UnknownRule {
        rule: String,
    },
    InvalidCharRange {
        start: char,
        end: char,
    },
    EmptyCharClass,
    InvalidRepeat {
        min: usize,
        max: usize,
    },
    CorpusNotFound {
        corpus: String,
    },
}

Evaluation failure.

Variants

EmptyGrammar

The grammar has no start rule to sample or recognize.

EmptyCorpus

Corpus-mode recall was requested without held-out positive examples.

EmptySample

Sampling produced no unique strings for the named source.

Fields

source: &'static str

Source that produced no samples.

NonTerminating

A reachable rule cannot produce a finite string.

Fields

rule: String

Rule name that cannot terminate.

UnknownRule

A reachable non-terminal references a missing rule.

Fields

rule: String

Missing rule name.

InvalidCharRange

A character range has its start after its end.

Fields

start: char

Inclusive range start.

end: char

Inclusive range end.

EmptyCharClass

A character class has no character that the sampler can emit.

InvalidRepeat

A counted repetition has a maximum smaller than its minimum.

Fields

min: usize

Minimum repetition count.

max: usize

Maximum repetition count.

CorpusNotFound

A named corpus was not registered.

Fields

corpus: String

Requested corpus name.

Trait Implementations

impl Clone for EvalError

fn clone(&self) -> EvalError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EvalError

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

Formats the value using the given formatter.

impl Display for EvalError

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

Formats the value using the given formatter.

impl Error for EvalError

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 PartialEq for EvalError

fn eq(&self, other: &EvalError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for EvalError

impl StructuralPartialEq for EvalError