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Location: CSY/reowolf/src/protocol/arena.rs - annotation
b8c262d37323
1.4 KiB
application/rls-services+xml
component states now implement deserialize
3f236d37dad1 3f236d37dad1 3f236d37dad1 b8c262d37323 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 3f236d37dad1 | use core::hash::Hash;
use core::marker::PhantomData;
#[derive(Debug, serde::Serialize, serde::Deserialize)]
pub struct Id<T> {
index: u32,
_phantom: PhantomData<T>,
}
impl<T> Clone for Id<T> {
fn clone(&self) -> Self {
*self
}
}
impl<T> Copy for Id<T> {}
impl<T> PartialEq for Id<T> {
fn eq(&self, other: &Self) -> bool {
self.index.eq(&other.index)
}
}
impl<T> Eq for Id<T> {}
impl<T> Hash for Id<T> {
fn hash<H: std::hash::Hasher>(&self, h: &mut H) {
self.index.hash(h);
}
}
pub struct Arena<T> {
store: Vec<T>,
}
impl<T> Arena<T> {
pub fn new() -> Self {
Self { store: vec![] }
}
pub fn alloc_with_id(&mut self, f: impl FnOnce(Id<T>) -> T) -> Id<T> {
use std::convert::TryFrom;
let id = Id {
index: u32::try_from(self.store.len()).expect("Out of capacity!"),
_phantom: Default::default(),
};
self.store.push(f(id));
id
}
pub fn iter(&self) -> impl Iterator<Item = (Id<T>, &T)> {
(0..).map(|index| Id { index, _phantom: Default::default() }).zip(self.store.iter())
}
}
impl<T> core::ops::Index<Id<T>> for Arena<T> {
type Output = T;
fn index(&self, id: Id<T>) -> &Self::Output {
self.store.index(id.index as usize)
}
}
impl<T> core::ops::IndexMut<Id<T>> for Arena<T> {
fn index_mut(&mut self, id: Id<T>) -> &mut Self::Output {
self.store.index_mut(id.index as usize)
}
}
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