mirror of https://github.com/rust-lang/rust.git
69 lines
1.7 KiB
Rust
69 lines
1.7 KiB
Rust
#![feature(async_closure)]
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use std::ops::AsyncFnMut;
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pub trait Main {
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type Item;
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type Out0: Support<Item = ()>;
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type Out1: Support<Item = Self::Item>;
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type Out2<T>: Support<Item = T>;
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type Out3: Support<Produce<()> = bool>;
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type Out4<T>: Support<Produce<T> = T>;
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type Out5: Support<Output<'static> = &'static ()>;
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type Out6: for<'a> Support<Output<'a> = &'a ()>;
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type Out7: Support<Item = String, Produce<i32> = u32> + Unrelated;
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type Out8: Unrelated + Protocol<i16, Q1 = u128, Q0 = ()>;
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type Out9: FnMut(i32) -> bool + Clone;
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type Out10<'q>: Support<Output<'q> = ()>;
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type Out11: for<'r, 's> Helper<A<'s> = &'s (), B<'r> = ()>;
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type Out12: for<'w> Helper<B<'w> = std::borrow::Cow<'w, str>, A<'w> = bool>;
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type Out13: for<'fst, 'snd> Aid<'snd, Result<'fst> = &'fst mut str>;
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type Out14<P: Copy + Eq, Q: ?Sized>;
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type Out15: AsyncFnMut(i32) -> bool;
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fn make<F>(_: F, _: impl FnMut(&str) -> bool)
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where
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F: FnOnce(u32) -> String,
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Self::Out2<()>: Protocol<u8, Q0 = Self::Item, Q1 = ()>;
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}
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pub trait Support {
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type Item;
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type Output<'a>;
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type Produce<T>;
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}
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pub trait Protocol<K> {
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type Q0;
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type Q1;
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}
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pub trait Unrelated {}
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pub trait Helper {
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type A<'q>;
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type B<'q>;
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}
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pub trait Aid<'src> {
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type Result<'inter: 'src>;
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}
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pub trait Implementee {
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type Alias<T: Eq>
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where
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String: From<T>;
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}
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pub struct Implementor;
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impl Implementee for Implementor {
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type Alias<T: Eq> = T
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where
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String: From<T>,
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// We will check that this bound doesn't get turned into an item bound since
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// associated types in impls are not allowed to have any.
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Self::Alias<T>: From<Self::Alias<T>>;
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}
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