Struct rustc_trait_selection::traits::DerivedCause
source · pub struct DerivedCause<'tcx> {
pub parent_trait_pred: Binder<TyCtxt<'tcx>, TraitPredicate<TyCtxt<'tcx>>>,
pub parent_code: InternedObligationCauseCode<'tcx>,
}
Fields§
§parent_trait_pred: Binder<TyCtxt<'tcx>, TraitPredicate<TyCtxt<'tcx>>>
The trait predicate of the parent obligation that led to the current obligation. Note that only trait obligations lead to derived obligations, so we just store the trait predicate here directly.
parent_code: InternedObligationCauseCode<'tcx>
The parent trait had this cause.
Trait Implementations§
source§impl<'tcx> Clone for DerivedCause<'tcx>
impl<'tcx> Clone for DerivedCause<'tcx>
source§fn clone(&self) -> DerivedCause<'tcx>
fn clone(&self) -> DerivedCause<'tcx>
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<'tcx> Debug for DerivedCause<'tcx>
impl<'tcx> Debug for DerivedCause<'tcx>
source§impl<'tcx, __D> Decodable<__D> for DerivedCause<'tcx>
impl<'tcx, __D> Decodable<__D> for DerivedCause<'tcx>
fn decode(__decoder: &mut __D) -> DerivedCause<'tcx>
source§impl<'tcx, __E> Encodable<__E> for DerivedCause<'tcx>
impl<'tcx, __E> Encodable<__E> for DerivedCause<'tcx>
source§impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for DerivedCause<'tcx>
impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for DerivedCause<'tcx>
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher<SipHasher128>, )
source§impl<'tcx> PartialEq for DerivedCause<'tcx>
impl<'tcx> PartialEq for DerivedCause<'tcx>
source§impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for DerivedCause<'tcx>
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for DerivedCause<'tcx>
source§fn try_fold_with<__F>(
self,
__folder: &mut __F,
) -> Result<DerivedCause<'tcx>, <__F as FallibleTypeFolder<TyCtxt<'tcx>>>::Error>where
__F: FallibleTypeFolder<TyCtxt<'tcx>>,
fn try_fold_with<__F>(
self,
__folder: &mut __F,
) -> Result<DerivedCause<'tcx>, <__F as FallibleTypeFolder<TyCtxt<'tcx>>>::Error>where
__F: FallibleTypeFolder<TyCtxt<'tcx>>,
source§fn fold_with<F>(self, folder: &mut F) -> Selfwhere
F: TypeFolder<I>,
fn fold_with<F>(self, folder: &mut F) -> Selfwhere
F: TypeFolder<I>,
A convenient alternative to
try_fold_with
for use with infallible
folders. Do not override this method, to ensure coherence with
try_fold_with
.source§impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for DerivedCause<'tcx>
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for DerivedCause<'tcx>
source§fn visit_with<__V>(
&self,
__visitor: &mut __V,
) -> <__V as TypeVisitor<TyCtxt<'tcx>>>::Resultwhere
__V: TypeVisitor<TyCtxt<'tcx>>,
fn visit_with<__V>(
&self,
__visitor: &mut __V,
) -> <__V as TypeVisitor<TyCtxt<'tcx>>>::Resultwhere
__V: TypeVisitor<TyCtxt<'tcx>>,
impl<'tcx> Eq for DerivedCause<'tcx>
impl<'tcx> StructuralPartialEq for DerivedCause<'tcx>
Auto Trait Implementations§
impl<'tcx> DynSend for DerivedCause<'tcx>
impl<'tcx> DynSync for DerivedCause<'tcx>
impl<'tcx> Freeze for DerivedCause<'tcx>
impl<'tcx> !RefUnwindSafe for DerivedCause<'tcx>
impl<'tcx> Send for DerivedCause<'tcx>
impl<'tcx> Sync for DerivedCause<'tcx>
impl<'tcx> Unpin for DerivedCause<'tcx>
impl<'tcx> !UnwindSafe for DerivedCause<'tcx>
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> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<Tcx, T> DepNodeParams<Tcx> for T
impl<Tcx, T> DepNodeParams<Tcx> for T
default fn fingerprint_style() -> FingerprintStyle
source§default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
This method turns the parameters of a DepNodeConstructor into an opaque
Fingerprint to be used in DepNode.
Not all DepNodeParams support being turned into a Fingerprint (they
don’t need to if the corresponding DepNode is anonymous).
default fn to_debug_str(&self, _: Tcx) -> String
source§default fn recover(_: Tcx, _: &DepNode) -> Option<T>
default fn recover(_: Tcx, _: &DepNode) -> Option<T>
This method tries to recover the query key from the given
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Creates a filterable data provider with the given name for debugging. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 moresource§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<'tcx, T> IsSuggestable<'tcx> for T
impl<'tcx, T> IsSuggestable<'tcx> for T
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<T> Pointable for T
impl<T> Pointable for T
source§impl<I, T> TypeVisitableExt<I> for Twhere
I: Interner,
T: TypeVisitable<I>,
impl<I, T> TypeVisitableExt<I> for Twhere
I: Interner,
T: TypeVisitable<I>,
fn has_type_flags(&self, flags: TypeFlags) -> bool
source§fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
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.fn error_reported(&self) -> Result<(), <I as Interner>::ErrorGuaranteed>
source§fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
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).source§fn has_escaping_bound_vars(&self) -> bool
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 morefn has_aliases(&self) -> bool
fn has_opaque_types(&self) -> bool
fn has_coroutines(&self) -> bool
fn references_error(&self) -> bool
fn has_non_region_param(&self) -> bool
fn has_infer_regions(&self) -> bool
fn has_infer_types(&self) -> bool
fn has_non_region_infer(&self) -> bool
fn has_infer(&self) -> bool
fn has_placeholders(&self) -> bool
fn has_non_region_placeholders(&self) -> bool
fn has_param(&self) -> bool
source§fn has_free_regions(&self) -> bool
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.
fn has_erased_regions(&self) -> bool
source§fn has_erasable_regions(&self) -> bool
fn has_erasable_regions(&self) -> bool
True if there are any un-erased free regions.
source§fn is_global(&self) -> bool
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.
source§fn has_bound_regions(&self) -> bool
fn has_bound_regions(&self) -> bool
True if there are any late-bound regions
source§fn has_non_region_bound_vars(&self) -> bool
fn has_non_region_bound_vars(&self) -> bool
True if there are any late-bound non-region variables
source§fn has_bound_vars(&self) -> bool
fn has_bound_vars(&self) -> bool
True if there are any bound variables
source§fn still_further_specializable(&self) -> bool
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.source§impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
impl<T> ErasedDestructor for Twhere
T: 'static,
impl<T> MaybeSendSync for T
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 40 bytes