Enum Error 

pub enum Error {
    TypeError(String),
    UniverseError(String),
    UnificationError(String),
    NotFound(String),
    ConversionError {
        expected: String,
        actual: String,
    },
    Internal(String),
}

Error types for core operations

Variants

TypeError(String)

Type checking error

UniverseError(String)

Universe inconsistency

UnificationError(String)

Unification failure

NotFound(String)

Environment lookup failure

ConversionError

Conversion check failure

Fields

expected: String

Expected type

actual: String

Actual type

Internal(String)

Internal error (should not happen in production)

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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.