Struct icu_properties::maps::CodePointMapDataBorrowed

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pub struct CodePointMapDataBorrowed<'a, T: TrieValue> { /* private fields */ }

Expand description

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

Implementations§

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

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

Get the value this map has associated with code point ch

Example

use icu::properties::{maps, GeneralCategory};
use icu_collections::codepointtrie::CodePointTrie;

let data =
    maps::load_general_category(&icu_testdata::unstable())
        .expect("The data should be valid");
let gc = data.as_borrowed();

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

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

Get the value this map has associated with code point ch

Example

use icu::properties::{maps, GeneralCategory};
use icu_collections::codepointtrie::CodePointTrie;

let data =
    maps::load_general_category(&icu_testdata::unstable())
        .expect("The data should be valid");
let gc = data.as_borrowed();

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

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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};
use icu_collections::codepointtrie::CodePointTrie;

let data = maps::load_general_category(&icu_testdata::unstable())
    .expect("The data should be valid");
let gc = data.as_borrowed();

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

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

let data = maps::load_general_category(&icu_testdata::unstable())
    .expect("The data should be valid");
let gc = data.as_borrowed();
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);

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

let data = maps::load_general_category(&icu_testdata::unstable())
    .expect("The data should be valid");
let gc = data.as_borrowed();
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);

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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.

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

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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 data = maps::load_general_category(&icu_testdata::unstable())
    .expect("The data should be valid");
let gc = data.as_borrowed();
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);