Struct rustc_borrowck::type_check::InstantiateOpaqueType

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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 TypeOps, this is not canonicalized - it directly affects the main InferCtxt that we use during MIR borrowchecking.

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§base_universe: Option<UniverseIndex>§region_constraints: Option<RegionConstraintData<'tcx>>§obligations: Vec<PredicateObligation<'tcx>>

Trait Implementations§

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impl<'tcx> Debug for InstantiateOpaqueType<'tcx>

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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<'tcx> ToUniverseInfo<'tcx> for InstantiateOpaqueType<'tcx>

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fn to_universe_info(self, base_universe: UniverseIndex) -> UniverseInfo<'tcx>

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impl<'tcx> TypeOp<'tcx> for InstantiateOpaqueType<'tcx>

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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

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type Output = ()

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fn fully_perform( self, infcx: &InferCtxt<'tcx>, span: Span, ) -> Result<TypeOpOutput<'tcx, Self>, ErrorGuaranteed>

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).
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impl<'tcx> TypeOpInfo<'tcx> for InstantiateOpaqueType<'tcx>

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fn fallback_error(&self, tcx: TyCtxt<'tcx>, span: Span) -> Diag<'tcx>

Returns an error to be reported if rerunning the type op fails to recover the error’s cause.
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fn base_universe(&self) -> UniverseIndex

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fn nice_error<'infcx>( &self, mbcx: &mut MirBorrowckCtxt<'_, '_, 'infcx, 'tcx>, _cause: ObligationCause<'tcx>, placeholder_region: Region<'tcx>, error_region: Option<Region<'tcx>>, ) -> Option<Diag<'infcx>>

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fn report_error( &self, mbcx: &mut MirBorrowckCtxt<'_, '_, '_, 'tcx>, placeholder: PlaceholderRegion, error_element: RegionElement, cause: ObligationCause<'tcx>, )

Auto Trait Implementations§

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impl<'tcx> DynSend for InstantiateOpaqueType<'tcx>

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impl<'tcx> DynSync for InstantiateOpaqueType<'tcx>

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impl<'tcx> Freeze for InstantiateOpaqueType<'tcx>

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impl<'tcx> !RefUnwindSafe for InstantiateOpaqueType<'tcx>

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impl<'tcx> Send for InstantiateOpaqueType<'tcx>

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impl<'tcx> Sync for InstantiateOpaqueType<'tcx>

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impl<'tcx> Unpin for InstantiateOpaqueType<'tcx>

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impl<'tcx> !UnwindSafe for InstantiateOpaqueType<'tcx>

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, 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<T> Filterable for T

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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
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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<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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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

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unsafe fn drop(ptr: usize)

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type Output = T

Should always be Self
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type Error = Infallible

The type returned in the event of a conversion error.
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Performs the conversion.
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where U: TryFrom<T>,

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

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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fn upcast(self, interner: I) -> U

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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

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

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impl<'a, T> Captures<'a> for T
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impl<T> MaybeSendSync for T
where T: Send + Sync,

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: 104 bytes