Struct rustc_borrowck::type_check::InstantiateOpaqueType
source · pub(crate) struct InstantiateOpaqueType<'tcx> {
pub base_universe: Option<UniverseIndex>,
pub region_constraints: Option<RegionConstraintData<'tcx>>,
pub obligations: Vec<PredicateObligation<'tcx>>,
}
Expand description
Runs infcx.instantiate_opaque_types
. Unlike other TypeOp
s,
this is not canonicalized - it directly affects the main InferCtxt
that we use during MIR borrowchecking.
Fields
base_universe: Option<UniverseIndex>
region_constraints: Option<RegionConstraintData<'tcx>>
obligations: Vec<PredicateObligation<'tcx>>
Trait Implementations
sourceimpl<'tcx> Debug for InstantiateOpaqueType<'tcx>
impl<'tcx> Debug for InstantiateOpaqueType<'tcx>
sourceimpl<'tcx> ToUniverseInfo<'tcx> for InstantiateOpaqueType<'tcx>
impl<'tcx> ToUniverseInfo<'tcx> for InstantiateOpaqueType<'tcx>
fn to_universe_info(self, base_universe: UniverseIndex) -> UniverseInfo<'tcx>
sourceimpl<'tcx> TypeOp<'tcx> for InstantiateOpaqueType<'tcx>
impl<'tcx> TypeOp<'tcx> for InstantiateOpaqueType<'tcx>
type ErrorInfo = InstantiateOpaqueType<'tcx>
type ErrorInfo = InstantiateOpaqueType<'tcx>
We use this type itself to store the information used
when reporting errors. Since this is not a query, we don’t
re-run anything during error reporting - we just use the information
we saved to help extract an error from the already-existing region
constraints in our InferCtxt
type Output = ()
sourcefn fully_perform(
self,
infcx: &InferCtxt<'_, 'tcx>
) -> Fallible<TypeOpOutput<'tcx, Self>>
fn fully_perform(
self,
infcx: &InferCtxt<'_, 'tcx>
) -> Fallible<TypeOpOutput<'tcx, Self>>
Processes the operation and all resulting obligations,
returning the final result along with any region constraints
(they will be given over to the NLL region solver). Read more
sourceimpl<'tcx> TypeOpInfo<'tcx> for InstantiateOpaqueType<'tcx>
impl<'tcx> TypeOpInfo<'tcx> for InstantiateOpaqueType<'tcx>
sourcefn fallback_error(
&self,
tcx: TyCtxt<'tcx>,
span: Span
) -> DiagnosticBuilder<'tcx, ErrorGuaranteed>
fn fallback_error(
&self,
tcx: TyCtxt<'tcx>,
span: Span
) -> DiagnosticBuilder<'tcx, ErrorGuaranteed>
Returns an error to be reported if rerunning the type op fails to
recover the error’s cause. Read more
fn base_universe(&self) -> UniverseIndex
fn nice_error(
&self,
mbcx: &mut MirBorrowckCtxt<'_, 'tcx>,
_cause: ObligationCause<'tcx>,
placeholder_region: Region<'tcx>,
error_region: Option<Region<'tcx>>
) -> Option<DiagnosticBuilder<'tcx, ErrorGuaranteed>>
fn report_error(
&self,
mbcx: &mut MirBorrowckCtxt<'_, 'tcx>,
placeholder: PlaceholderRegion,
error_element: RegionElement,
cause: ObligationCause<'tcx>
)
Auto Trait Implementations
impl<'tcx> !RefUnwindSafe for InstantiateOpaqueType<'tcx>
impl<'tcx> !Send for InstantiateOpaqueType<'tcx>
impl<'tcx> !Sync for InstantiateOpaqueType<'tcx>
impl<'tcx> Unpin for InstantiateOpaqueType<'tcx>
impl<'tcx> !UnwindSafe for InstantiateOpaqueType<'tcx>
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
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
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: 136 bytes