Struct rustc_middle::infer::canonical::QueryResponse
source · pub struct QueryResponse<'tcx, R> {
pub var_values: CanonicalVarValues<'tcx>,
pub region_constraints: QueryRegionConstraints<'tcx>,
pub certainty: Certainty,
pub opaque_types: Vec<(Ty<'tcx>, Ty<'tcx>)>,
pub value: R,
}
Expand description
After we execute a query with a canonicalized key, we get back a
Canonical<QueryResponse<..>>
. You can use
instantiate_query_result
to access the data in this result.
Fields
var_values: CanonicalVarValues<'tcx>
region_constraints: QueryRegionConstraints<'tcx>
certainty: Certainty
opaque_types: Vec<(Ty<'tcx>, Ty<'tcx>)>
List of opaque types which we tried to compare to another type. Inside the query we don’t know yet whether the opaque type actually should get its hidden type inferred. So we bubble the opaque type and the type it was compared against upwards and let the query caller handle it.
value: R
Implementations
sourceimpl<'tcx, R> QueryResponse<'tcx, R>
impl<'tcx, R> QueryResponse<'tcx, R>
Trait Implementations
sourceimpl<'tcx, R: Clone> Clone for QueryResponse<'tcx, R>
impl<'tcx, R: Clone> Clone for QueryResponse<'tcx, R>
sourcefn clone(&self) -> QueryResponse<'tcx, R>
fn clone(&self) -> QueryResponse<'tcx, R>
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresourceimpl<'tcx, R: Debug> Debug for QueryResponse<'tcx, R>
impl<'tcx, R: Debug> Debug for QueryResponse<'tcx, R>
sourceimpl<'tcx, '__ctx, R> HashStable<StableHashingContext<'__ctx>> for QueryResponse<'tcx, R>where
R: HashStable<StableHashingContext<'__ctx>>,
impl<'tcx, '__ctx, R> HashStable<StableHashingContext<'__ctx>> for QueryResponse<'tcx, R>where
R: HashStable<StableHashingContext<'__ctx>>,
fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
sourceimpl<'tcx, '__lifted, R> Lift<'__lifted> for QueryResponse<'tcx, R>where
R: Lift<'__lifted>,
impl<'tcx, '__lifted, R> Lift<'__lifted> for QueryResponse<'tcx, R>where
R: Lift<'__lifted>,
type Lifted = QueryResponse<'__lifted, <R as Lift<'__lifted>>::Lifted>
fn lift_to_tcx(
self,
__tcx: TyCtxt<'__lifted>
) -> Option<QueryResponse<'__lifted, R::Lifted>>
sourceimpl<'tcx, R> TypeFoldable<'tcx> for QueryResponse<'tcx, R>where
R: TypeFoldable<'tcx>,
impl<'tcx, R> TypeFoldable<'tcx> for QueryResponse<'tcx, R>where
R: TypeFoldable<'tcx>,
sourcefn try_fold_with<__F: FallibleTypeFolder<'tcx>>(
self,
__folder: &mut __F
) -> Result<Self, __F::Error>
fn try_fold_with<__F: FallibleTypeFolder<'tcx>>(
self,
__folder: &mut __F
) -> Result<Self, __F::Error>
sourcefn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self
fn fold_with<F: TypeFolder<'tcx>>(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
. Read moresourceimpl<'tcx, R> TypeVisitable<'tcx> for QueryResponse<'tcx, R>where
R: TypeVisitable<'tcx>,
impl<'tcx, R> TypeVisitable<'tcx> for QueryResponse<'tcx, R>where
R: TypeVisitable<'tcx>,
sourcefn visit_with<__V: TypeVisitor<'tcx>>(
&self,
__visitor: &mut __V
) -> ControlFlow<__V::BreakTy>
fn visit_with<__V: TypeVisitor<'tcx>>(
&self,
__visitor: &mut __V
) -> ControlFlow<__V::BreakTy>
sourcefn 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. Read moresourcefn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
Returns
true
if this self
has any regions that escape binder
(and
hence are not bound by it). Read morefn has_escaping_bound_vars(&self) -> bool
fn has_type_flags(&self, flags: TypeFlags) -> bool
fn has_projections(&self) -> bool
fn has_opaque_types(&self) -> bool
fn references_error(&self) -> bool
fn error_reported(&self) -> Option<ErrorGuaranteed>
fn has_param_types_or_consts(&self) -> bool
fn has_infer_regions(&self) -> bool
fn has_infer_types(&self) -> bool
fn has_infer_types_or_consts(&self) -> bool
fn needs_infer(&self) -> bool
fn has_placeholders(&self) -> bool
fn needs_subst(&self) -> bool
sourcefn 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. Read more
fn has_erased_regions(&self) -> bool
sourcefn has_erasable_regions(&self) -> bool
fn has_erasable_regions(&self) -> bool
True if there are any un-erased free regions.
sourcefn 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. Read more
sourcefn has_late_bound_regions(&self) -> bool
fn has_late_bound_regions(&self) -> bool
True if there are any late-bound regions
sourcefn 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. Read moreAuto Trait Implementations
impl<'tcx, R> !RefUnwindSafe for QueryResponse<'tcx, R>
impl<'tcx, R> !Send for QueryResponse<'tcx, R>
impl<'tcx, R> !Sync for QueryResponse<'tcx, R>
impl<'tcx, R> Unpin for QueryResponse<'tcx, R>where
R: Unpin,
impl<'tcx, R> !UnwindSafe for QueryResponse<'tcx, R>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
sourcedefault fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint
default fn to_fingerprint(&self, tcx: Ctxt) -> 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). Read more
default fn to_debug_str(&self, Ctxt) -> String
sourcedefault fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>
default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> 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. Read moresourceimpl<T, R> InternIteratorElement<T, R> for T
impl<T, R> InternIteratorElement<T, R> for T
type Output = R
fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,
sourceimpl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
sourceimpl<CTX, T> Value<CTX> for Twhere
CTX: DepContext,
impl<CTX, T> Value<CTX> for Twhere
CTX: DepContext,
default fn from_cycle_error(tcx: CTX) -> T
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
Layout
Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.