Crate icu_uniset[−][src]
Expand description
icu_uniset
is one of the ICU4X
components.
This API provides necessary functionality for highly efficient querying of sets of Unicode characters.
It is an implementation of the existing ICU4C UnicodeSet API.
Architecture
ICU4X UnicodeSet
is split up into independent levels, with UnicodeSet
representing the membership/query API,
and UnicodeSetBuilder
representing the builder API. A Properties API
is in future works.
Examples:
Creating a UnicodeSet
UnicodeSets are created from either serialized UnicodeSets
,
represented by inversion lists,
the UnicodeSetBuilder
, or from the TBA Properties API.
use icu::uniset::{UnicodeSet, UnicodeSetBuilder}; let mut builder = UnicodeSetBuilder::new(); builder.add_range(&('A'..'Z')); let set: UnicodeSet = builder.build(); assert!(set.contains('A'));
Querying a UnicodeSet
Currently, you can check if a character/range of characters exists in the UnicodeSet
, or iterate through the characters.
use icu::uniset::{UnicodeSet, UnicodeSetBuilder}; let mut builder = UnicodeSetBuilder::new(); builder.add_range(&('A'..'Z')); let set: UnicodeSet = builder.build(); assert!(set.contains('A')); assert!(set.contains_range(&('A'..='C'))); assert_eq!(set.iter_chars().next(), Some('A'));
Modules
*** Note: DO NOT USE THESE APIs FOR NOW. **** Performance improvements and other fixes are still needed on this component.
Data provider struct definitions for this ICU4X component.
Structs
Enums
Functions
Returns start (inclusive) and end (exclusive) bounds of RangeBounds
Returns whether the vector is sorted ascending non inclusive, of even length,
and within the bounds of 0x0 -> 0x10FFFF
inclusive.