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use std::{
any::TypeId,
fmt::{Display, Formatter},
hash::Hasher,
};
use super::{packed::PackedStorage, ComponentStorage};
#[derive(Copy, Clone, Debug, Eq, PartialOrd, Ord)]
pub struct ComponentTypeId {
pub(crate) type_id: TypeId,
#[cfg(debug_assertions)]
name: &'static str,
}
impl ComponentTypeId {
pub fn of<T: Component>() -> Self {
Self {
type_id: TypeId::of::<T>(),
#[cfg(debug_assertions)]
name: std::any::type_name::<T>(),
}
}
pub fn type_id(&self) -> TypeId {
self.type_id
}
}
impl std::hash::Hash for ComponentTypeId {
fn hash<H: Hasher>(&self, state: &mut H) {
self.type_id.hash(state);
}
}
impl PartialEq for ComponentTypeId {
fn eq(&self, other: &Self) -> bool {
self.type_id.eq(&other.type_id)
}
}
impl Display for ComponentTypeId {
#[cfg(debug_assertions)]
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.name)
}
#[cfg(not(debug_assertions))]
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
write!(f, "{:?}", self.type_id)
}
}
pub trait Component: 'static + Sized + Send + Sync {
type Storage: for<'a> ComponentStorage<'a, Self>;
}
impl<T: 'static + Sized + Send + Sync> Component for T {
type Storage = PackedStorage<T>;
}