Enum SubstitutionError 

#[non_exhaustive]
pub enum SubstitutionError {
    RecursiveAssignment {
        var_id: VariableID,
    },
    CyclicAssignmentDetected,
}

Error types that can occur during substitution operations.

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.

RecursiveAssignment

Error indicating that a recursive assignment was attempted.

Fields

var_id: VariableID

CyclicAssignmentDetected

Error indicating that a cycle was detected in the assignment graph.

Trait Implementations

impl Clone for SubstitutionError

fn clone(&self) -> SubstitutionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SubstitutionError

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

Formats the value using the given formatter.

impl Display for SubstitutionError

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

Formats the value using the given formatter.

impl Error for SubstitutionError

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<SubstitutionError> for RawParseError

fn from(source: SubstitutionError) -> Self

Converts to this type from the input type.

impl PartialEq for SubstitutionError

fn eq(&self, other: &SubstitutionError) -> 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 SubstitutionError

impl StructuralPartialEq for SubstitutionError