1 // compile-flags: --edition=2021
3 #![feature(rustc_attrs)]
6 use core::marker::PhantomData;
9 test::<MaskedStorage<GenericComp<Pos>>>(make());
10 //~^ ERROR evaluate(Binder(TraitPredicate(<MaskedStorage<GenericComp<Pos>> as std::marker::Sized>, polarity:Positive), [])) = Ok(EvaluatedToOk)
11 //~| ERROR evaluate(Binder(TraitPredicate(<MaskedStorage<GenericComp<Pos>> as std::marker::Sized>, polarity:Positive), [])) = Ok(EvaluatedToOk)
13 test::<MaskedStorage<GenericComp2<Pos>>>(make());
14 //~^ ERROR evaluate(Binder(TraitPredicate(<MaskedStorage<GenericComp2<Pos>> as std::marker::Sized>, polarity:Positive), [])) = Ok(EvaluatedToOkModuloRegions)
15 //~| ERROR evaluate(Binder(TraitPredicate(<MaskedStorage<GenericComp2<Pos>> as std::marker::Sized>, polarity:Positive), [])) = Ok(EvaluatedToOkModuloRegions)
18 #[rustc_evaluate_where_clauses]
19 fn test<T: Sized>(_: T) {}
25 struct DerefWrap<T>(T);
27 impl<T> core::ops::Deref for DerefWrap<T> {
29 fn deref(&self) -> &Self::Target {
34 struct Storage<T, D> {
35 phantom: PhantomData<(T, D)>,
38 type ReadStorage<T> = Storage<T, DerefWrap<MaskedStorage<T>>>;
48 impl Component for Pos {
49 type Storage = VecStorage;
52 struct GenericComp<T> {
56 impl<T: 'static> Component for GenericComp<T> {
57 type Storage = VecStorage;
60 struct GenericComp2<T> {
64 impl<T: 'static> Component for GenericComp2<T> where for<'a> &'a bool: 'a {
65 type Storage = VecStorage;
69 pos_interpdata: ReadStorage<GenericComp<Pos>>,
75 fn run(data: Self::SystemData, any: Box<dyn Any>);
81 type SystemData = (ReadData, ReadStorage<Pos>);
83 fn run((data, pos): Self::SystemData, any: Box<dyn Any>) {
84 <ReadStorage<GenericComp<Pos>> as SystemData>::setup(any);
86 ParJoin::par_join((&pos, &data.pos_interpdata));
98 impl<'a, T, D> ParJoin for &'a Storage<T, D>
101 D: core::ops::Deref<Target = MaskedStorage<T>>,
106 impl<A, B> ParJoin for (A, B)
113 pub trait SystemData {
114 fn setup(any: Box<dyn Any>);
117 impl<T: 'static> SystemData for ReadStorage<T>
121 fn setup(any: Box<dyn Any>) {
122 let storage: &MaskedStorage<T> = any.downcast_ref().unwrap();
124 <dyn Any as CastFrom<MaskedStorage<T>>>::cast(&storage);
128 pub struct MaskedStorage<T: Component> {
132 pub unsafe trait CastFrom<T> {
133 fn cast(t: &T) -> &Self;
136 unsafe impl<T> CastFrom<T> for dyn Any
140 fn cast(t: &T) -> &Self {