Struct chalk_solve::rust_ir::CoroutineWitnessExistential
source · pub struct CoroutineWitnessExistential<I: Interner> {
pub types: Binders<Vec<Ty<I>>>,
}
Expand description
The coroutine witness types, together with existentially bound lifetimes. Each ‘witness type’ represents a type stored inside the coroutine across a yield. When a coroutine type is constructed, the precise region relationships found in the coroutine body are erased. As a result, we are left with existential lifetimes - each type is parameterized over some lifetimes, but we do not know their precise values.
Unlike the binder in CoroutineWitnessDatum
, this Binder
never gets substituted
via an Ty
. Instead, we handle this Binders
specially when determining
auto trait impls. See push_auto_trait_impls_coroutine_witness
for more details.
Fields§
§types: Binders<Vec<Ty<I>>>
Trait Implementations§
source§impl<I: Clone + Interner> Clone for CoroutineWitnessExistential<I>
impl<I: Clone + Interner> Clone for CoroutineWitnessExistential<I>
source§fn clone(&self) -> CoroutineWitnessExistential<I>
fn clone(&self) -> CoroutineWitnessExistential<I>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl<I: Interner> HasInterner for CoroutineWitnessExistential<I>
impl<I: Interner> HasInterner for CoroutineWitnessExistential<I>
source§impl<I: PartialEq + Interner> PartialEq for CoroutineWitnessExistential<I>
impl<I: PartialEq + Interner> PartialEq for CoroutineWitnessExistential<I>
source§fn eq(&self, other: &CoroutineWitnessExistential<I>) -> bool
fn eq(&self, other: &CoroutineWitnessExistential<I>) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl<I: Interner> TypeFoldable<I> for CoroutineWitnessExistential<I>
impl<I: Interner> TypeFoldable<I> for CoroutineWitnessExistential<I>
source§fn try_fold_with<E>(
self,
folder: &mut dyn FallibleTypeFolder<I, Error = E>,
outer_binder: DebruijnIndex,
) -> Result<Self, E>
fn try_fold_with<E>( self, folder: &mut dyn FallibleTypeFolder<I, Error = E>, outer_binder: DebruijnIndex, ) -> Result<Self, E>
Apply the given folder
folder
to self
; binders
is the
number of binders that are in scope when beginning the
folder. Typically binders
starts as 0, but is adjusted when
we encounter Binders<T>
in the IR or other similar
constructs.source§fn fold_with(
self,
folder: &mut dyn TypeFolder<I, Error = Infallible>,
outer_binder: DebruijnIndex,
) -> Self
fn fold_with( self, folder: &mut dyn TypeFolder<I, Error = Infallible>, outer_binder: DebruijnIndex, ) -> 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
.impl<I: Eq + Interner> Eq for CoroutineWitnessExistential<I>
impl<I: Interner> StructuralPartialEq for CoroutineWitnessExistential<I>
Auto Trait Implementations§
impl<I> Freeze for CoroutineWitnessExistential<I>
impl<I> RefUnwindSafe for CoroutineWitnessExistential<I>where
<I as Interner>::InternedVariableKinds: RefUnwindSafe,
<I as Interner>::InternedType: RefUnwindSafe,
impl<I> Send for CoroutineWitnessExistential<I>
impl<I> Sync for CoroutineWitnessExistential<I>
impl<I> Unpin for CoroutineWitnessExistential<I>
impl<I> UnwindSafe for CoroutineWitnessExistential<I>where
<I as Interner>::InternedVariableKinds: UnwindSafe,
<I as Interner>::InternedType: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> Cast for T
impl<T> Cast for T
source§fn cast<U>(self, interner: <U as HasInterner>::Interner) -> Uwhere
Self: CastTo<U>,
U: HasInterner,
fn cast<U>(self, interner: <U as HasInterner>::Interner) -> Uwhere
Self: CastTo<U>,
U: HasInterner,
Cast a value to type
U
using CastTo
.source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T, I> Shift<I> for Twhere
T: TypeFoldable<I>,
I: Interner,
impl<T, I> Shift<I> for Twhere
T: TypeFoldable<I>,
I: Interner,
source§fn shifted_in(self, interner: I) -> T
fn shifted_in(self, interner: I) -> T
Shifts this term in one level of binders.
source§fn shifted_in_from(self, interner: I, source_binder: DebruijnIndex) -> T
fn shifted_in_from(self, interner: I, source_binder: DebruijnIndex) -> T
Shifts a term valid at
outer_binder
so that it is
valid at the innermost binder. See DebruijnIndex::shifted_in_from
for a detailed explanation.source§fn shifted_out_to(
self,
interner: I,
target_binder: DebruijnIndex,
) -> Result<T, NoSolution>
fn shifted_out_to( self, interner: I, target_binder: DebruijnIndex, ) -> Result<T, NoSolution>
Shifts a term valid at the innermost binder so that it is
valid at
outer_binder
. See DebruijnIndex::shifted_out_to
for a detailed explanation.source§fn shifted_out(self, interner: I) -> Result<T, NoSolution>
fn shifted_out(self, interner: I) -> Result<T, NoSolution>
Shifts this term out one level of binders.