Struct icu_properties::maps::CodePointMapDataBorrowed

pub struct CodePointMapDataBorrowed<'a, T: TrieValue> {
    map: &'a PropertyCodePointMapV1<'a, T>,
}

A borrowed wrapper around code point set data, returned by CodePointSetData::as_borrowed(). More efficient to query.

Fields

map: &'a PropertyCodePointMapV1<'a, T>

Implementations

impl<'a, T: TrieValue> CodePointMapDataBorrowed<'a, T>

pub fn get(self, ch: char) -> T

Get the value this map has associated with code point ch

Example

use icu::properties::{maps, GeneralCategory};

let gc = maps::general_category();

assert_eq!(gc.get('木'), GeneralCategory::OtherLetter);  // U+6728
assert_eq!(gc.get('🎃'), GeneralCategory::OtherSymbol);  // U+1F383 JACK-O-LANTERN

pub fn get32(self, ch: u32) -> T

Get the value this map has associated with code point ch

Example

use icu::properties::{maps, GeneralCategory};

let gc = maps::general_category();

assert_eq!(gc.get32(0x6728), GeneralCategory::OtherLetter);  // U+6728 (木)
assert_eq!(gc.get32(0x1F383), GeneralCategory::OtherSymbol);  // U+1F383 JACK-O-LANTERN

pub fn get_set_for_value(self, value: T) -> CodePointSetData

Get a CodePointSetData for all elements corresponding to a particular value

Example

use icu::properties::{maps, GeneralCategory};

let gc = maps::general_category();

let other_letter_set_data =
    gc.get_set_for_value(GeneralCategory::OtherLetter);
let other_letter_set = other_letter_set_data.as_borrowed();

assert!(other_letter_set.contains('木')); // U+6728
assert!(!other_letter_set.contains('🎃')); // U+1F383 JACK-O-LANTERN

pub fn iter_ranges(self) -> impl Iterator<Item = CodePointMapRange<T>> + 'a

Yields an Iterator returning ranges of consecutive code points that share the same value in the CodePointMapData.

Examples

use icu::properties::maps;
use icu::properties::GeneralCategory;

let gc = maps::general_category();
let mut ranges = gc.iter_ranges();
let next = ranges.next().unwrap();
assert_eq!(next.range, 0..=31);
assert_eq!(next.value, GeneralCategory::Control);
let next = ranges.next().unwrap();
assert_eq!(next.range, 32..=32);
assert_eq!(next.value, GeneralCategory::SpaceSeparator);

pub fn iter_ranges_for_value( self, val: T, ) -> impl Iterator<Item = RangeInclusive<u32>> + 'a

Yields an Iterator returning ranges of consecutive code points that share the same value v in the CodePointMapData.

Examples

use icu::properties::maps;
use icu::properties::GeneralCategory;

let gc = maps::general_category();
let mut ranges = gc.iter_ranges_for_value(GeneralCategory::UppercaseLetter);
assert_eq!(ranges.next().unwrap(), 'A' as u32..='Z' as u32);
assert_eq!(ranges.next().unwrap(), 'À' as u32..='Ö' as u32);
assert_eq!(ranges.next().unwrap(), 'Ø' as u32..='Þ' as u32);

pub fn iter_ranges_for_value_complemented( self, val: T, ) -> impl Iterator<Item = RangeInclusive<u32>> + 'a

Yields an Iterator returning ranges of consecutive code points that do not have the value v in the CodePointMapData.

impl<T: TrieValue> CodePointMapDataBorrowed<'static, T>

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

Cheaply converts a [CodePointMapDataBorrowed<'static>] into a CodePointMapData.

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

impl<'a> CodePointMapDataBorrowed<'a, GeneralCategory>

pub fn iter_ranges_for_group( self, group: GeneralCategoryGroup, ) -> impl Iterator<Item = RangeInclusive<u32>> + 'a

Yields an Iterator returning ranges of consecutive code points that have a General_Category value belonging to the specified GeneralCategoryGroup

Examples

use core::ops::RangeInclusive;
use icu::properties::maps::{self, CodePointMapData};
use icu::properties::GeneralCategoryGroup;

let gc = maps::general_category();
let mut ranges = gc.iter_ranges_for_group(GeneralCategoryGroup::Letter);
assert_eq!(ranges.next().unwrap(), 'A' as u32..='Z' as u32);
assert_eq!(ranges.next().unwrap(), 'a' as u32..='z' as u32);
assert_eq!(ranges.next().unwrap(), 'ª' as u32..='ª' as u32);
assert_eq!(ranges.next().unwrap(), 'µ' as u32..='µ' as u32);
assert_eq!(ranges.next().unwrap(), 'º' as u32..='º' as u32);
assert_eq!(ranges.next().unwrap(), 'À' as u32..='Ö' as u32);
assert_eq!(ranges.next().unwrap(), 'Ø' as u32..='ö' as u32);

Trait Implementations

impl<'a, T: Clone + TrieValue> Clone for CodePointMapDataBorrowed<'a, T>

fn clone(&self) -> CodePointMapDataBorrowed<'a, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, T: Debug + TrieValue> Debug for CodePointMapDataBorrowed<'a, T>

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

Formats the value using the given formatter.

impl<'a, T: Copy + TrieValue> Copy for CodePointMapDataBorrowed<'a, T>