Struct icu_properties::PropertyNamesShortBorrowed

pub struct PropertyNamesShortBorrowed<'a, T: NamedEnumeratedProperty> { /* private fields */ }

A borrowed wrapper around property value name-to-enum data, returned by PropertyNamesShort::as_borrowed(). More efficient to query.

Implementations

impl<T: NamedEnumeratedProperty> PropertyNamesShortBorrowed<'_, T>

pub fn get(&self, property: T) -> Option<&str>

Get the property name given a value

Example

use icu::properties::PropertyNamesShort;
use icu::properties::props::CanonicalCombiningClass;

let lookup = PropertyNamesShort::<CanonicalCombiningClass>::new();
assert_eq!(
    lookup.get(CanonicalCombiningClass::KanaVoicing),
    Some("KV")
);
assert_eq!(
    lookup.get(CanonicalCombiningClass::AboveLeft),
    Some("AL")
);

impl PropertyNamesShortBorrowed<'_, Script>

pub fn get_locale_script(&self, property: Script) -> Option<Script>

Gets the “name” of a script property as a icu::locale::subtags::Script.

This method is available only on PropertyNamesShortBorrowed<Script>.

Example

use icu::properties::PropertyNamesShort;
use icu::properties::props::Script;
use icu::locale::subtags::script;

let lookup = PropertyNamesShort::<Script>::new();
assert_eq!(lookup.get_locale_script(Script::Brahmi), Some(script!("Brah")));
assert_eq!(lookup.get_locale_script(Script::Hangul), Some(script!("Hang")));

For the reverse direction, use property parsing as normal:

use icu::properties::PropertyParser;
use icu::properties::props::Script;
use icu::locale::subtags::script;

let parser = PropertyParser::<Script>::new();
assert_eq!(parser.get_strict(script!("Brah").as_str()), Some(Script::Brahmi));
assert_eq!(parser.get_strict(script!("Hang").as_str()), Some(Script::Hangul));

impl<T: NamedEnumeratedProperty> PropertyNamesShortBorrowed<'static, T>

pub fn new() -> Self

Creates a new instance of PropertyNamesShortBorrowed<T>.

✨ Enabled with the compiled_data Cargo feature.

📚 Help choosing a constructor

pub const fn static_to_owned(self) -> PropertyNamesShort<T>

Cheaply converts a [PropertyNamesShortBorrowed<'static>] into a PropertyNamesShort.

Note: Due to branching and indirection, using PropertyNamesShort might inhibit some compile-time optimizations that are possible with PropertyNamesShortBorrowed.

Trait Implementations

impl<T: NamedEnumeratedProperty> Clone for PropertyNamesShortBorrowed<'_, T>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, T: Debug + NamedEnumeratedProperty> Debug for PropertyNamesShortBorrowed<'a, T>

where T::DataStructShort: Debug,

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

Formats the value using the given formatter.

impl<T: NamedEnumeratedProperty> Default for PropertyNamesShortBorrowed<'static, T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: NamedEnumeratedProperty> Copy for PropertyNamesShortBorrowed<'_, T>