Enum TermError 

pub enum TermError {
    InvalidTerm(Term),
    LiveEpochsExceeded,
    InvalidEpoch(EpochID),
    MissingFunctor,
    InvalidFunctor(Term),
    UnexpectedKind {
        expected: &'static str,
        found: &'static str,
    },
    UnexpectedArity {
        expected: usize,
        found: usize,
    },
    UnexpectedName(Term),
    InvalidFixity(String),
    InvalidAssoc(String),
    OperDef(String),
    Encoding(String),
}

Represents all possible errors that can occur within the calculator.

TermError provides a single error surface for higher-level functions. Each variant wraps a more specific underlying error, and thanks to #[from] you can write ? at call sites without explicit mapping.

Variants

InvalidTerm(Term)

LiveEpochsExceeded

InvalidEpoch(EpochID)

MissingFunctor

InvalidFunctor(Term)

UnexpectedKind

Fields

expected: &'static str

found: &'static str

UnexpectedArity

Fields

expected: usize

found: usize

UnexpectedName(Term)

InvalidFixity(String)

InvalidAssoc(String)

OperDef(String)

Encoding(String)

Trait Implementations

impl Clone for TermError

fn clone(&self) -> TermError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TermError

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

Formats the value using the given formatter.

impl Display for TermError

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

Formats the value using the given formatter.

impl Error for TermError

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.