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use primitives::{Component, Id, Valid};
use downcast::Downcast;
use std::any::Any;
pub trait StoreBase: Any + Send + Sync {
type Id: Id;
fn len(&self) -> usize;
fn is_assigned<'id>(&self, id: Valid<'id, Self::Id>) -> bool;
fn assign_cloned<'id>(
&mut self,
dest: Valid<'id, Self::Id>,
src: Valid<'id, Self::Id>,
) -> bool;
fn release_drop<'id>(&mut self, id: Valid<'id, Self::Id>) -> bool;
fn clear(&mut self);
}
impl<ID: Id, T: StoreBase<Id = ID>> Downcast<T> for StoreBase<Id = ID> {
impl_downcast_items!(T);
}
impl<ID: Id> StoreBase<Id = ID> {
downcast_method_items!();
}
impl<S: StoreBase + ?Sized> StoreBase for Box<S> {
type Id = S::Id;
fn len(&self) -> usize { (**self).len() }
fn is_assigned<'id>(&self, id: Valid<'id, Self::Id>) -> bool { (**self).is_assigned(id) }
fn assign_cloned<'id>(
&mut self,
dest: Valid<'id, Self::Id>,
src: Valid<'id, Self::Id>,
) -> bool {
(**self).assign_cloned(dest, src)
}
fn release_drop<'id>(&mut self, id: Valid<'id, Self::Id>) -> bool { (**self).release_drop(id) }
fn clear(&mut self){ (**self).clear() }
}
pub trait _ComponentStore<'a>: StoreBase {
type _Component: Component;
type Components: Iterator<Item = &'a Self::_Component> + 'a;
type ComponentsMut: Iterator<Item = &'a mut Self::_Component> + 'a;
}
pub trait ComponentStore: StoreBase
where Self: for<'a> _ComponentStore<'a, _Component = <Self as ComponentStore>::Component>
{
type Component: Component;
fn assign<'id, T>(&mut self, id: Valid<'id, Self::Id>, com: T) -> Option<Self::Component>
where T: Into<Self::Component>;
fn release<'id>(&mut self, id: Valid<'id, Self::Id>) -> Option<Self::Component>;
fn get<'id>(&self, id: Valid<'id, Self::Id>) -> Option<&Self::Component>;
fn get_mut<'id>(&mut self, id: Valid<'id, Self::Id>) -> Option<&mut Self::Component>;
fn components<'a>(&'a self) -> <Self as _ComponentStore<'a>>::Components;
fn components_mut<'a>(&'a mut self) -> <Self as _ComponentStore<'a>>::ComponentsMut;
}
pub trait _ComponentStoreIter<'a>: _ComponentStore<'a> {
type Assignments: Iterator<Item = (Valid<'a, Self::Id>, &'a Self::_Component)> + 'a;
type AssignmentsMut: Iterator<Item = (Valid<'a, Self::Id>, &'a mut Self::_Component)> + 'a;
}
pub trait ComponentStoreIter: ComponentStore
where Self: for<'a> _ComponentStoreIter<'a>
{
fn iter<'a>(&'a self) -> <Self as _ComponentStoreIter<'a>>::Assignments;
fn iter_mut<'a>(&'a mut self) -> <Self as _ComponentStoreIter<'a>>::AssignmentsMut;
}