Module icu::decimal::provider

🚧 [Unstable] Data provider struct definitions for this ICU4X component.

🚧 This code is considered unstable; it may change at any time, in breaking or non-breaking ways, including in SemVer minor releases. While the serde representation of data structs is guaranteed to be stable, their Rust representation might not be. Use with caution.

Read more about data providers: icu_provider

Examples

Get the resolved numbering system

In a constructor call, the last request for DecimalDigitsV1Marker contains the resolved numbering system as its attribute:

use icu_provider::prelude::*;
use icu::decimal::FixedDecimalFormatter;
use icu::decimal::provider::DecimalDigitsV1Marker;
use icu::locale::locale;
use std::any::TypeId;
use std::cell::RefCell;

struct NumberingSystemInspectionProvider<P> {
    inner: P,
    numbering_system: RefCell<Option<Box<DataMarkerAttributes>>>,
}

impl<M, P> DataProvider<M> for NumberingSystemInspectionProvider<P>
where
    M: DataMarker,
    P: DataProvider<M>,
{
    fn load(&self, req: DataRequest) -> Result<DataResponse<M>, DataError> {
        if TypeId::of::<M>() == TypeId::of::<DecimalDigitsV1Marker>() {
            *self.numbering_system.try_borrow_mut().unwrap() = Some(req.id.marker_attributes.to_owned());
        }
        self.inner.load(req)
    }
}

let provider = NumberingSystemInspectionProvider {
    inner: icu::decimal::provider::Baked,
    numbering_system: RefCell::new(None),
};

let fdf = FixedDecimalFormatter::try_new_unstable(
    &provider,
    locale!("th").into(),
    Default::default(),
)
.unwrap();

assert_eq!(provider.numbering_system.borrow().as_ref().map(|x| x.as_str()), Some("latn"));

let fdf = FixedDecimalFormatter::try_new_unstable(
    &provider,
    locale!("th-u-nu-thai").into(),
    Default::default(),
)
.unwrap();

assert_eq!(provider.numbering_system.borrow().as_ref().map(|x| x.as_str()), Some("thai"));

let fdf = FixedDecimalFormatter::try_new_unstable(
    &provider,
    locale!("th-u-nu-adlm").into(),
    Default::default(),
)
.unwrap();

assert_eq!(provider.numbering_system.borrow().as_ref().map(|x| x.as_str()), Some("adlm"));

Structs

• Baked
  Baked data
• DecimalDigitsV1
  The digits for a given numbering system. This data ought to be stored in the und locale with an auxiliary key set to the numbering system code.
• DecimalDigitsV1Marker
  Marker type for DecimalDigitsV1: “decimal/digits@1”
• DecimalSymbolStrsBuilder
  A stack representation of the strings used in DecimalSymbolsV2, i.e. a builder type for DecimalSymbolsStrs. This type can be obtained from a DecimalSymbolsStrs the From/Into traits.
• DecimalSymbolsStrs
  VarULE type for DecimalSymbolStrsBuilder. See DecimalSymbolStrsBuilder for documentation.
• DecimalSymbolsV2
  Symbols and metadata required for formatting a SignedFixedDecimal.
• DecimalSymbolsV2Marker
  Marker type for DecimalSymbolsV2: “decimal/symbols@2”
• GroupingSizesV1
  A collection of settings expressing where to put grouping separators in a decimal number. For example, 1,000,000 has two grouping separators, positioned along every 3 digits.

Constants

• MARKERS
  The latest minimum set of markers required by this component.