Struct icu_provider_adapters::empty::EmptyDataProvider

pub struct EmptyDataProvider { /* private fields */ }

A data provider that always returns an error.

The returned error kind is configurable.

Examples

use icu_provider::hello_world::HelloWorldV1Marker;
use icu_provider::prelude::*;
use icu_provider_adapters::empty::EmptyDataProvider;

let provider = EmptyDataProvider::new();

assert!(matches!(
    provider.load_any(HelloWorldV1Marker::KEY, Default::default()),
    Err(DataError {
        kind: DataErrorKind::MissingDataKey,
        ..
    })
));

Implementations

impl EmptyDataProvider

pub fn new() -> Self

Creates a data provider that always returns DataErrorKind::MissingDataKey.

pub fn new_with_error_kind(error_kind: DataErrorKind) -> Self

Creates a data provider that always returns the specified error kind.

Trait Implementations

impl AnyProvider for EmptyDataProvider

fn load_any( &self, key: DataKey, base_req: DataRequest<'_> ) -> Result<AnyResponse, DataError>

Loads an AnyPayload according to the key and request.

impl BufferProvider for EmptyDataProvider

fn load_buffer( &self, key: DataKey, base_req: DataRequest<'_> ) -> Result<DataResponse<BufferMarker>, DataError>

Loads a DataPayload<BufferMarker> according to the key and request.

impl<M> DataProvider<M> for EmptyDataProvider

where M: KeyedDataMarker,

fn load(&self, base_req: DataRequest<'_>) -> Result<DataResponse<M>, DataError>

Query the provider for data, returning the result.

impl Debug for EmptyDataProvider

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

Formats the value using the given formatter.

impl Default for EmptyDataProvider

fn default() -> Self

Returns the “default value” for a type.

impl<M> DynamicDataProvider<M> for EmptyDataProvider

where M: DataMarker,

fn load_data( &self, key: DataKey, base_req: DataRequest<'_> ) -> Result<DataResponse<M>, DataError>

Query the provider for data, returning the result.