Trait icu_provider_adapters::fork::predicates::ForkByErrorPredicate

pub trait ForkByErrorPredicate {
    const UNIT_ERROR: DataErrorKind = DataErrorKind::MissingDataKey;

    // Required method
    fn test(
        &self,
        key: DataKey,
        req: Option<DataRequest<'_>>,
        err: DataError,
    ) -> bool;
}

The predicate trait used by ForkByErrorProvider.

Provided Associated Constants

const UNIT_ERROR: DataErrorKind = DataErrorKind::MissingDataKey

The error to return if there are zero providers.

Required Methods

fn test( &self, key: DataKey, req: Option<DataRequest<'_>>, err: DataError, ) -> bool

This function is called when a data request fails and there are additional providers that could possibly fulfill the request.

Arguments:

• &self = Reference to the struct implementing the trait (for data capture)
• key = The DataKey associated with the request
• req = The DataRequest. This may be None if there is no request, such as inside IterableDynamicDataProvider.
• err = The error that occurred.

Return value:

• true to discard the error and attempt the request with the next provider.
• false to return the error and not perform any additional requests.

Object Safety

This trait is not object safe.

Implementors

impl ForkByErrorPredicate for MissingDataKeyPredicate

const UNIT_ERROR: DataErrorKind = DataErrorKind::MissingDataKey

impl ForkByErrorPredicate for MissingLocalePredicate

const UNIT_ERROR: DataErrorKind = DataErrorKind::MissingLocale