Struct ChildrenMap 

pub struct ChildrenMap { /* private fields */ }

Stores child key index lists for nodes with multiple children. Index 0 is reserved as null.

Implementations

impl ChildrenMap

pub fn new() -> Self

pub fn push(&mut self, indices: Vec<u16>) -> u16

Appends a children list (as key list indices) and returns its index.

Examples

use state_engine::common::pool::ChildrenMap;

let mut map = ChildrenMap::new();
let idx = map.push(vec![2, 3, 4]);

assert_ne!(idx, 0);
assert_eq!(map.get(idx), Some([2u16, 3, 4].as_slice()));
assert_eq!(map.get(0), Some([].as_slice())); // null slot
assert_eq!(map.get(999), None);

pub fn get(&self, index: u16) -> Option<&[u16]>

Returns the child indices at the given index.

Trait Implementations

impl Default for ChildrenMap

fn default() -> Self

Returns the “default value” for a type.