core:icu
Unicode character properties, from the ICU4X component bundled with the
toolchain. A name it does not answer is null, never an approximate set:
Block, Decomposition_Type and the contributory Other_* are withheld.
Synopsis
assert has(BinaryProperty::Uppercase, 'À');
assert value_contains("sc", "Hiragana", 'あ') == Option::Some(true);
Functions
pub fn has(property: BinaryProperty, ch: char) -> bool
Whether ch has the property. Total, and the name costs nothing at run
time: an enum case is a number, and ICU4X bakes each property as a static.
pub fn set(property: BinaryProperty) -> List<[u32, u32]>
The property's inclusive code point ranges, lowest first.
pub fn ranges(property: String) -> Option<List<[u32, u32]>>
Inclusive code point ranges of a binary property named at run time, lowest
first. Prefer [set] for a name written into the source.
pub fn value_ranges(property: String, value: String) -> Option<List<[u32, u32]>>
Inclusive code point ranges of an enumerated property's value, lowest
first. A gc value may name a group (L) as well as a category (Lu).
pub fn contains(property: String, ch: char) -> Option<bool>
Whether ch has the binary property named at run time. Prefer [has] for a
name written into the source.
pub fn value_contains(property: String, value: String, ch: char) -> Option<bool>
Whether ch has that enumerated property value, without building the
ranges.
Effects
pub interface Properties
fn has(property: BinaryProperty, ch: char) -> bool
#[cm] #[cm_params("property", "ch")]
fn set(property: BinaryProperty) -> List<[u32, u32]>
#[cm] #[cm_params("property")]
fn ranges(property: String, value: Option<String>) -> Option<List<[u32, u32]>>
#[cm] #[cm_params("property", "value")]
fn contains(property: String, value: Option<String>, ch: char) -> Option<bool>
#[cm] #[cm_params("property", "value", "ch")]