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// This file is part of ICU4X. For terms of use, please see the file
// called LICENSE at the top level of the ICU4X source tree
//! This module provides APIs for getting exemplar characters for a locale.
//!
//! Exemplars are characters used by a language, separated into different sets.
//! The sets are: main, auxiliary, punctuation, numbers, and index.
//!
//! The sets define, according to typical usage in the language,
//! which characters occur in which contexts with which frequency.
//! For more information, see the documentation in the
//! [Exemplars section in Unicode Technical Standard #35](https://unicode.org/reports/tr35/tr35-general.html#Exemplars)
//! of the LDML specification.
//!
//! # Examples
//!
//! ```
//! use icu::locid::locale;
//! use icu::properties::exemplar_chars;
//!
//! let locale = locale!("en-001").into();
//! let data = exemplar_chars::exemplars_main(&locale)
//! .expect("locale should be present");
//! let exemplars_main = data.as_borrowed();
//!
//! assert!(exemplars_main.contains_char('a'));
//! assert!(exemplars_main.contains_char('z'));
//! assert!(exemplars_main.contains("a"));
//! assert!(!exemplars_main.contains("ä"));
//! assert!(!exemplars_main.contains("ng"));
//! ```
use crate::provider::*;
use crate::sets::UnicodeSetData;
use crate::PropertiesError;
use icu_provider::prelude::*;
macro_rules! make_exemplar_chars_unicode_set_property {
(
// currently unused
marker: $marker_name:ident;
keyed_data_marker: $keyed_data_marker:ty;
func:
$vis:vis fn $funcname:ident();
$(#[$attr:meta])*
$vis2:vis fn $constname:ident();
) => {
#[doc = concat!("A version of [`", stringify!($constname), "()`] that uses custom data provided by a [`DataProvider`].")]
///
/// [📚 Help choosing a constructor](icu_provider::constructors)
$vis fn $funcname(
provider: &(impl DataProvider<$keyed_data_marker> + ?Sized),
locale: &DataLocale,
) -> Result<UnicodeSetData, PropertiesError> {
Ok(provider.load(
DataRequest {
locale,
metadata: Default::default(),
})
.and_then(DataResponse::take_payload)
.map(UnicodeSetData::from_data)?
)
}
$(#[$attr])*
#[cfg(feature = "compiled_data")]
$vis2 fn $constname(
locale: &DataLocale,
) -> Result<UnicodeSetData, PropertiesError> {
Ok(UnicodeSetData::from_data(
DataProvider::<$keyed_data_marker>::load(
&crate::provider::Baked,
DataRequest {
locale,
metadata: Default::default(),
})
.and_then(DataResponse::take_payload)?
))
}
}
}
make_exemplar_chars_unicode_set_property!(
marker: ExemplarCharactersMain;
keyed_data_marker: ExemplarCharactersMainV1Marker;
func:
pub fn load_exemplars_main();
/// Get the "main" set of exemplar characters.
///
/// ✨ *Enabled with the `compiled_data` Cargo feature.*
///
/// [📚 Help choosing a constructor](icu_provider::constructors)
///
/// # Examples
///
/// ```
/// use icu::locid::locale;
/// use icu::properties::exemplar_chars;
///
/// let data = exemplar_chars::exemplars_main(&locale!("en").into())
/// .expect("locale should be present");
/// let exemplars_main = data.as_borrowed();
///
/// assert!(exemplars_main.contains_char('a'));
/// assert!(exemplars_main.contains_char('z'));
/// assert!(exemplars_main.contains("a"));
/// assert!(!exemplars_main.contains("ä"));
/// assert!(!exemplars_main.contains("ng"));
/// assert!(!exemplars_main.contains("A"));
/// ```
pub fn exemplars_main();
);
make_exemplar_chars_unicode_set_property!(
marker: ExemplarCharactersAuxiliary;
keyed_data_marker: ExemplarCharactersAuxiliaryV1Marker;
func:
pub fn load_exemplars_auxiliary();
/// Get the "auxiliary" set of exemplar characters.
///
/// ✨ *Enabled with the `compiled_data` Cargo feature.*
///
/// [📚 Help choosing a constructor](icu_provider::constructors)
///
/// # Examples
///
/// ```
/// use icu::locid::locale;
/// use icu::properties::exemplar_chars;
///
/// let data =
/// exemplar_chars::exemplars_auxiliary(&locale!("en").into())
/// .expect("locale should be present");
/// let exemplars_auxiliary = data.as_borrowed();
///
/// assert!(!exemplars_auxiliary.contains_char('a'));
/// assert!(!exemplars_auxiliary.contains_char('z'));
/// assert!(!exemplars_auxiliary.contains("a"));
/// assert!(exemplars_auxiliary.contains("ä"));
/// assert!(!exemplars_auxiliary.contains("ng"));
/// assert!(!exemplars_auxiliary.contains("A"));
/// ```
pub fn exemplars_auxiliary();
);
make_exemplar_chars_unicode_set_property!(
marker: ExemplarCharactersPunctuation;
keyed_data_marker: ExemplarCharactersPunctuationV1Marker;
func:
pub fn load_exemplars_punctuation();
/// Get the "punctuation" set of exemplar characters.
///
/// ✨ *Enabled with the `compiled_data` Cargo feature.*
///
/// [📚 Help choosing a constructor](icu_provider::constructors)
///
/// # Examples
///
/// ```
/// use icu::locid::locale;
/// use icu::properties::exemplar_chars;
///
/// let data =
/// exemplar_chars::exemplars_punctuation(&locale!("en").into())
/// .expect("locale should be present");
/// let exemplars_punctuation = data.as_borrowed();
///
/// assert!(!exemplars_punctuation.contains_char('0'));
/// assert!(!exemplars_punctuation.contains_char('9'));
/// assert!(!exemplars_punctuation.contains_char('%'));
/// assert!(exemplars_punctuation.contains_char(','));
/// assert!(exemplars_punctuation.contains_char('.'));
/// assert!(exemplars_punctuation.contains_char('!'));
/// assert!(exemplars_punctuation.contains_char('?'));
/// ```
pub fn exemplars_punctuation();
);
make_exemplar_chars_unicode_set_property!(
marker: ExemplarCharactersNumbers;
keyed_data_marker: ExemplarCharactersNumbersV1Marker;
func:
pub fn load_exemplars_numbers();
/// Get the "numbers" set of exemplar characters.
///
/// ✨ *Enabled with the `compiled_data` Cargo feature.*
///
/// [📚 Help choosing a constructor](icu_provider::constructors)
///
/// # Examples
///
/// ```
/// use icu::locid::locale;
/// use icu::properties::exemplar_chars;
///
/// let data =
/// exemplar_chars::exemplars_numbers(&locale!("en").into())
/// .expect("locale should be present");
/// let exemplars_numbers = data.as_borrowed();
///
/// assert!(exemplars_numbers.contains_char('0'));
/// assert!(exemplars_numbers.contains_char('9'));
/// assert!(exemplars_numbers.contains_char('%'));
/// assert!(exemplars_numbers.contains_char(','));
/// assert!(exemplars_numbers.contains_char('.'));
/// assert!(!exemplars_numbers.contains_char('!'));
/// assert!(!exemplars_numbers.contains_char('?'));
/// ```
pub fn exemplars_numbers();
);
make_exemplar_chars_unicode_set_property!(
marker: ExemplarCharactersIndex;
keyed_data_marker: ExemplarCharactersIndexV1Marker;
func:
pub fn load_exemplars_index();
/// Get the "index" set of exemplar characters.
///
/// ✨ *Enabled with the `compiled_data` Cargo feature.*
///
/// [📚 Help choosing a constructor](icu_provider::constructors)
///
/// # Examples
///
/// ```
/// use icu::locid::locale;
/// use icu::properties::exemplar_chars;
///
/// let data =
/// exemplar_chars::exemplars_index(&locale!("en").into())
/// .expect("locale should be present");
/// let exemplars_index = data.as_borrowed();
///
/// assert!(!exemplars_index.contains_char('a'));
/// assert!(!exemplars_index.contains_char('z'));
/// assert!(!exemplars_index.contains("a"));
/// assert!(!exemplars_index.contains("ä"));
/// assert!(!exemplars_index.contains("ng"));
/// assert!(exemplars_index.contains("A"));
/// ```
pub fn exemplars_index();
);