Enum PropagatorError 

pub enum PropagatorError {
    ExecutionFailed {
        reason: String,
    },
    NanDetected {
        field_id: FieldId,
        cell_index: Option<usize>,
    },
    ConstraintViolation {
        constraint: String,
    },
}

Errors from individual propagator execution.

Returned by Propagator::step() and wrapped in StepError::PropagatorFailed by the tick engine.

Variants

ExecutionFailed

The propagator’s step function failed (MURK_ERROR_PROPAGATOR_FAILED).

Fields

reason: String

Human-readable description of the failure.

NanDetected

NaN detected in propagator output (sentinel checking).

Fields

field_id: FieldId

The field containing the NaN.

cell_index: Option<usize>

Index of the first NaN cell, if known.

ConstraintViolation

A user-defined constraint was violated.

Fields

constraint: String

Description of the violated constraint.

Trait Implementations

impl Clone for PropagatorError

fn clone(&self) -> PropagatorError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PropagatorError

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

Formats the value using the given formatter.

impl Display for PropagatorError

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

Formats the value using the given formatter.

impl Error for PropagatorError

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.