pub struct CoroutineClosureSignature<I: Interner> {
    pub interior: I::Ty,
    pub tupled_inputs_ty: I::Ty,
    pub resume_ty: I::Ty,
    pub yield_ty: I::Ty,
    pub return_ty: I::Ty,
    pub c_variadic: bool,
    pub safety: I::Safety,
    pub abi: I::Abi,
}

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§interior: I::Ty§tupled_inputs_ty: I::Ty§resume_ty: I::Ty§yield_ty: I::Ty§return_ty: I::Ty§c_variadic: bool

Always false

§safety: I::Safety

Always Normal (safe)

§abi: I::Abi

Always RustCall

Implementations§

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impl<I: Interner> CoroutineClosureSignature<I>

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pub fn to_coroutine( self, cx: I, parent_args: I::GenericArgsSlice, coroutine_kind_ty: I::Ty, coroutine_def_id: I::DefId, tupled_upvars_ty: I::Ty, ) -> I::Ty

Construct a coroutine from the closure signature. Since a coroutine signature is agnostic to the type of generator that is returned (by-ref/by-move), the caller must specify what “flavor” of generator that they’d like to create. Additionally, they must manually compute the upvars of the closure.

This helper is not really meant to be used directly except for early on during typeck, when we want to put inference vars into the kind and upvars tys. When the kind and upvars are known, use the other helper functions.

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pub fn to_coroutine_given_kind_and_upvars( self, cx: I, parent_args: I::GenericArgsSlice, coroutine_def_id: I::DefId, goal_kind: ClosureKind, env_region: I::Region, closure_tupled_upvars_ty: I::Ty, coroutine_captures_by_ref_ty: I::Ty, ) -> I::Ty

Given known upvars and a ClosureKind, compute the coroutine returned by that corresponding async fn trait.

This function expects the upvars to have been computed already, and doesn’t check that the ClosureKind is actually supported by the coroutine-closure.

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pub fn tupled_upvars_by_closure_kind( cx: I, kind: ClosureKind, tupled_inputs_ty: I::Ty, closure_tupled_upvars_ty: I::Ty, coroutine_captures_by_ref_ty: I::Ty, env_region: I::Region, ) -> I::Ty

Compute the tupled upvars that a coroutine-closure’s output coroutine would return for the given ClosureKind.

When ClosureKind is FnMut/Fn, then this will use the “captures by ref” to return a set of upvars which are borrowed with the given env_region.

This ensures that the AsyncFn::call will return a coroutine whose upvars’ lifetimes are related to the lifetime of the borrow on the closure made for the call. This allows borrowck to enforce the self-borrows correctly.

Trait Implementations§

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impl<I: Interner> Clone for CoroutineClosureSignature<I>

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<I: Interner> Debug for CoroutineClosureSignature<I>

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fn fmt(&self, __f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<I: Interner> Hash for CoroutineClosureSignature<I>

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fn hash<__HI>(&self, __state: &mut __HI)
where __HI: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<I: Interner> PartialEq for CoroutineClosureSignature<I>

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fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<I> TypeFoldable<I> for CoroutineClosureSignature<I>
where I: Interner, I::Ty: TypeFoldable<I>, I::Safety: TypeFoldable<I>, I::Abi: TypeFoldable<I>,

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fn try_fold_with<__F: FallibleTypeFolder<I>>( self, __folder: &mut __F, ) -> Result<Self, __F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f). Read more
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fn fold_with<F: TypeFolder<I>>(self, folder: &mut F) -> Self

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.
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impl<I> TypeVisitable<I> for CoroutineClosureSignature<I>
where I: Interner, I::Ty: TypeVisitable<I>, I::Safety: TypeVisitable<I>, I::Abi: TypeVisitable<I>,

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fn visit_with<__V: TypeVisitor<I>>(&self, __visitor: &mut __V) -> __V::Result

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v). Read more
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impl<I: Interner> Copy for CoroutineClosureSignature<I>

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impl<I: Interner> Eq for CoroutineClosureSignature<I>

Auto Trait Implementations§

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impl<I> DynSend for CoroutineClosureSignature<I>
where <I as Interner>::Ty: DynSend, <I as Interner>::Safety: DynSend, <I as Interner>::Abi: DynSend,

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impl<I> DynSync for CoroutineClosureSignature<I>
where <I as Interner>::Ty: DynSync, <I as Interner>::Safety: DynSync, <I as Interner>::Abi: DynSync,

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impl<I> Freeze for CoroutineClosureSignature<I>
where <I as Interner>::Ty: Freeze, <I as Interner>::Safety: Freeze, <I as Interner>::Abi: Freeze,

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impl<I> RefUnwindSafe for CoroutineClosureSignature<I>

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impl<I> Send for CoroutineClosureSignature<I>
where <I as Interner>::Ty: Send, <I as Interner>::Safety: Send, <I as Interner>::Abi: Send,

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impl<I> Sync for CoroutineClosureSignature<I>
where <I as Interner>::Ty: Sync, <I as Interner>::Safety: Sync, <I as Interner>::Abi: Sync,

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impl<I> Unpin for CoroutineClosureSignature<I>
where <I as Interner>::Ty: Unpin, <I as Interner>::Safety: Unpin, <I as Interner>::Abi: Unpin,

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impl<I> UnwindSafe for CoroutineClosureSignature<I>
where <I as Interner>::Ty: UnwindSafe, <I as Interner>::Safety: UnwindSafe, <I as Interner>::Abi: UnwindSafe,

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T> TypeVisitableExt<I> for T
where I: Interner, T: TypeVisitable<I>,

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool

Returns true if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free.
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fn error_reported(&self) -> Result<(), <I as Interner>::ErrorGuaranteed>

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fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool

Returns true if this type has any regions that escape binder (and hence are not bound by it).
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fn has_escaping_bound_vars(&self) -> bool

Return true if this type has regions that are not a part of the type. For example, for<'a> fn(&'a i32) return false, while fn(&'a i32) would return true. The latter can occur when traversing through the former. Read more
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fn has_aliases(&self) -> bool

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fn has_inherent_projections(&self) -> bool

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fn has_opaque_types(&self) -> bool

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fn has_coroutines(&self) -> bool

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fn references_error(&self) -> bool

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fn has_non_region_param(&self) -> bool

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fn has_infer_regions(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn has_non_region_infer(&self) -> bool

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fn has_infer(&self) -> bool

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fn has_placeholders(&self) -> bool

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fn has_non_region_placeholders(&self) -> bool

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fn has_param(&self) -> bool

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fn has_free_regions(&self) -> bool

“Free” regions in this context means that it has any region that is not (a) erased or (b) late-bound.
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fn has_erased_regions(&self) -> bool

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fn has_erasable_regions(&self) -> bool

True if there are any un-erased free regions.
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fn is_global(&self) -> bool

Indicates whether this value references only ‘global’ generic parameters that are the same regardless of what fn we are in. This is used for caching.
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fn has_bound_regions(&self) -> bool

True if there are any late-bound regions
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fn has_non_region_bound_vars(&self) -> bool

True if there are any late-bound non-region variables
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fn has_bound_vars(&self) -> bool

True if there are any bound variables
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fn still_further_specializable(&self) -> bool

Indicates whether this value still has parameters/placeholders/inference variables which could be replaced later, in a way that would change the results of impl specialization.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.