Struct icu_collections::char16trie::trie::Char16TrieIterator

pub struct Char16TrieIterator<'a> {
    trie: &'a ZeroSlice<u16>,
    pos: Option<usize>,
    remaining_match_length: Option<usize>,
}

This struct represents an iterator over a Char16Trie.

Fields

trie: &'a ZeroSlice<u16>

A reference to the Char16Trie data to iterate over.

pos: Option<usize>

Index of next trie unit to read, or None if there are no more matches.

remaining_match_length: Option<usize>

Remaining length of a linear-match node, minus 1, or None if not in such a node.

Implementations

impl<'a> Char16TrieIterator<'a>

pub fn new(trie: &'a ZeroSlice<u16>) -> Self

Returns a new Char16TrieIterator backed by borrowed data for the trie array

pub fn next(&mut self, c: char) -> TrieResult

Traverses the trie from the current state for this input char.

Examples

use icu_collections::char16trie::{Char16Trie, TrieResult};
use zerovec::ZeroVec;

// A Char16Trie containing the ASCII characters 'a' and 'b'.
let trie_data = [48, 97, 176, 98, 32868];
let trie = Char16Trie::new(ZeroVec::from_slice_or_alloc(&trie_data));

let mut iter = trie.iter();
let res = iter.next('a');
assert_eq!(res, TrieResult::Intermediate(1));
let res = iter.next('b');
assert_eq!(res, TrieResult::FinalValue(100));
let res = iter.next('c');
assert_eq!(res, TrieResult::NoMatch);

pub fn next32(&mut self, c: u32) -> TrieResult

Traverses the trie from the current state for this input char.

Examples

use icu_collections::char16trie::{Char16Trie, TrieResult};
use zerovec::ZeroVec;

// A Char16Trie containing the ASCII characters 'a' and 'b'.
let trie_data = [48, 97, 176, 98, 32868];
let trie = Char16Trie::new(ZeroVec::from_slice_or_alloc(&trie_data));

let mut iter = trie.iter();
let res = iter.next('a');
assert_eq!(res, TrieResult::Intermediate(1));
let res = iter.next('b');
assert_eq!(res, TrieResult::FinalValue(100));
let res = iter.next('c');
assert_eq!(res, TrieResult::NoMatch);

pub fn next16(&mut self, c: u16) -> TrieResult

Traverses the trie from the current state for this input char.

Examples

use icu_collections::char16trie::{Char16Trie, TrieResult};
use zerovec::ZeroVec;

// A Char16Trie containing the ASCII characters 'a' and 'b'.
let trie_data = [48, 97, 176, 98, 32868];
let trie = Char16Trie::new(ZeroVec::from_slice_or_alloc(&trie_data));

let mut iter = trie.iter();
let res = iter.next16('a' as u16);
assert_eq!(res, TrieResult::Intermediate(1));
let res = iter.next16('b' as u16);
assert_eq!(res, TrieResult::FinalValue(100));
let res = iter.next16('c' as u16);
assert_eq!(res, TrieResult::NoMatch);

fn branch_next(&mut self, pos: usize, length: usize, in_unit: u16) -> TrieResult

fn next_impl(&mut self, pos: usize, in_unit: u16) -> TrieResult

fn stop(&mut self)

fn jump_by_delta(&self, pos: usize) -> Option<usize>

fn skip_value(&self, pos: usize) -> Option<usize>

fn skip_delta(&self, pos: usize) -> Option<usize>

fn value_result(&self, pos: usize) -> TrieResult

fn get_value(&self, pos: usize) -> Option<TrieResult>

fn read_value(&self, pos: usize, lead_unit: u16) -> Option<i32>

fn read_node_value(&self, pos: usize, lead_unit: u16) -> Option<i32>

Trait Implementations

impl<'a> Clone for Char16TrieIterator<'a>

fn clone(&self) -> Char16TrieIterator<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.