pub(super) struct WfCheckingCtxt<'a, 'tcx> {
    pub(super) ocx: ObligationCtxt<'a, 'tcx>,
    span: Span,
    body_def_id: LocalDefId,
    param_env: ParamEnv<'tcx>,
}

Fields§

§ocx: ObligationCtxt<'a, 'tcx>§span: Span§body_def_id: LocalDefId§param_env: ParamEnv<'tcx>

Implementations§

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impl<'tcx> WfCheckingCtxt<'_, 'tcx>

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fn tcx(&self) -> TyCtxt<'tcx>

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fn normalize<T>(&self, span: Span, loc: Option<WellFormedLoc>, value: T) -> T
where T: TypeFoldable<TyCtxt<'tcx>>,

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fn register_wf_obligation( &self, span: Span, loc: Option<WellFormedLoc>, arg: GenericArg<'tcx> )

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impl<'tcx> WfCheckingCtxt<'_, 'tcx>

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fn check_false_global_bounds(&mut self)

Feature gates RFC 2056 – trivial bounds, checking for global bounds that aren’t true.

Methods from Deref<Target = ObligationCtxt<'a, 'tcx>>§

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pub fn register_obligation(&self, obligation: Obligation<'tcx, Predicate<'tcx>>)

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pub fn register_obligations( &self, obligations: impl IntoIterator<Item = Obligation<'tcx, Predicate<'tcx>>> )

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pub fn register_infer_ok_obligations<T>(&self, infer_ok: InferOk<'tcx, T>) -> T

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pub fn register_bound( &self, cause: ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, ty: Ty<'tcx>, def_id: DefId )

Requires that ty must implement the trait with def_id in the given environment. This trait must not have any type parameters (except for Self).

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pub fn normalize<T>( &self, cause: &ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, value: T ) -> T
where T: TypeFoldable<TyCtxt<'tcx>>,

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pub fn eq_exp<T>( &self, cause: &ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, a_is_expected: bool, a: T, b: T ) -> Result<(), TypeError<'tcx>>
where T: ToTrace<'tcx>,

Makes expected <: actual.

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pub fn eq<T>( &self, cause: &ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, expected: T, actual: T ) -> Result<(), TypeError<'tcx>>
where T: ToTrace<'tcx>,

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pub fn sub<T>( &self, cause: &ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, expected: T, actual: T ) -> Result<(), TypeError<'tcx>>
where T: ToTrace<'tcx>,

Checks whether expected is a subtype of actual: expected <: actual.

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pub fn relate<T>( &self, cause: &ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, variance: Variance, expected: T, actual: T ) -> Result<(), TypeError<'tcx>>
where T: ToTrace<'tcx>,

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pub fn sup<T>( &self, cause: &ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, expected: T, actual: T ) -> Result<(), TypeError<'tcx>>
where T: ToTrace<'tcx>,

Checks whether expected is a supertype of actual: expected :> actual.

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pub fn select_where_possible(&self) -> Vec<FulfillmentError<'tcx>>

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pub fn select_all_or_error(&self) -> Vec<FulfillmentError<'tcx>>

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pub fn assumed_wf_types_and_report_errors( &self, param_env: ParamEnv<'tcx>, def_id: LocalDefId ) -> Result<IndexSet<Ty<'tcx>, BuildHasherDefault<FxHasher>>, ErrorGuaranteed>

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pub fn assumed_wf_types( &self, param_env: ParamEnv<'tcx>, def_id: LocalDefId ) -> Result<IndexSet<Ty<'tcx>, BuildHasherDefault<FxHasher>>, Vec<FulfillmentError<'tcx>>>

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pub fn make_canonicalized_query_response<T>( &self, inference_vars: CanonicalVarValues<'tcx>, answer: T ) -> Result<&'tcx Canonical<TyCtxt<'tcx>, QueryResponse<'tcx, T>>, NoSolution>
where T: Debug + TypeFoldable<TyCtxt<'tcx>>, Canonical<TyCtxt<'tcx>, QueryResponse<'tcx, T>>: ArenaAllocatable<'tcx>,

Trait Implementations§

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impl<'a, 'tcx> Deref for WfCheckingCtxt<'a, 'tcx>

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type Target = ObligationCtxt<'a, 'tcx>

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.

Auto Trait Implementations§

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impl<'a, 'tcx> !DynSend for WfCheckingCtxt<'a, 'tcx>

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impl<'a, 'tcx> !DynSync for WfCheckingCtxt<'a, 'tcx>

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impl<'a, 'tcx> !RefUnwindSafe for WfCheckingCtxt<'a, 'tcx>

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impl<'a, 'tcx> !Send for WfCheckingCtxt<'a, 'tcx>

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impl<'a, 'tcx> !Sync for WfCheckingCtxt<'a, 'tcx>

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impl<'a, 'tcx> Unpin for WfCheckingCtxt<'a, 'tcx>

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impl<'a, 'tcx> !UnwindSafe for WfCheckingCtxt<'a, '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<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

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<'tcx, T> ToPredicate<'tcx, T> for T

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fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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

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impl<T> WithSubscriber for T

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

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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impl<T> ErasedDestructor for T
where T: 'static,

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: 56 bytes