Crate icu_codepointtrie

icu_codepointtrie is a utility crate of the ICU4X project.

This component provides a data structure for an time-efficient lookup of values associated to code points.

It is an implementation of the existing ICU4C UCPTrie / ICU4J CodePointTrie API.

Architecture

ICU4X CodePointTrie is designed to provide a read-only view of CodePointTrie data that is exported from ICU4C. Detailed information about the design of the data structure can be found in the documentation for the CodePointTrie struct.

Examples

Querying a CodePointTrie

use icu_codepointtrie::planes;
let trie = planes::get_planes_trie();

assert_eq!(0, trie.get(0x41));  // 'A' as u32
assert_eq!(0, trie.get(0x13E0));  // 'Ꮰ' as u32
assert_eq!(1, trie.get(0x10044));  // '𐁄' as u32

Modules

error

planes

toml

Utilities for reading CodePointTrie data from TOML files.

Structs

CodePointMapRange

CodePointMapRangeIterator

CodePointTrie

This struct represents a de-serialized CodePointTrie that was exported from ICU binary data.

CodePointTrieHeader

This struct contains the fixed-length header fields of a CodePointTrie.

Enums

TrieType

The type of trie represents whether the trie has an optimization that would make it small or fast. See UCPTrieType in ICU4C.

Traits

TrieValue

A trait representing the values stored in the data array of a CodePointTrie. This trait is used as a type parameter in constructing a CodePointTrie.