Struct 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.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 24 bytes