Enum PolicyDecodeError 

#[non_exhaustive]
pub enum PolicyDecodeError<E> {
    Native(E),
    Requirements(At<UnmetRequirements>),
    Policy(At<PolicyFailure>),
}

Native failure or traced application-policy failure during controlled decode.

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.

Native(E)

The native decoder’s original error.

Requirements(At<UnmetRequirements>)

Required workspace is unqualified before native polling.

Policy(At<PolicyFailure>)

Callback refusal/failure, invalid choice, or cancellation at a decision.

Trait Implementations

impl<E: Debug> Debug for PolicyDecodeError<E>

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

Formats the value using the given formatter.

impl<E: Display> Display for PolicyDecodeError<E>

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

Formats the value using the given formatter.

impl<E: Error + 'static> Error for PolicyDecodeError<E>

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.