Enum RewindError 

pub enum RewindError {
    NotSupported,
    PositionBeyondEnd {
        target: usize,
        current: usize,
    },
    Runtime(RuntimeError),
}

An error returned when a rewind operation is not possible.

Variants

NotSupported

The backend does not support rewinding (e.g. SSM recurrent states).

The caller should fall back to N=1 verification when this is returned.

PositionBeyondEnd

The requested position is beyond the current sequence length.

Fields

target: usize

current: usize

Runtime(RuntimeError)

An I/O or runtime error prevented the rewind.

Trait Implementations

impl Debug for RewindError

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

Formats the value using the given formatter.

impl Display for RewindError

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

Formats the value using the given formatter.

impl Error for RewindError

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<RuntimeError> for RewindError

fn from(source: RuntimeError) -> Self

Converts to this type from the input type.