Struct rustc_trait_selection::traits::wf::WfPredicates

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struct WfPredicates<'a, 'tcx> {
    infcx: &'a InferCtxt<'tcx>,
    param_env: ParamEnv<'tcx>,
    body_id: LocalDefId,
    span: Span,
    out: Vec<PredicateObligation<'tcx>>,
    recursion_depth: usize,
    item: Option<&'tcx Item<'tcx>>,
}

Fields§

§infcx: &'a InferCtxt<'tcx>§param_env: ParamEnv<'tcx>§body_id: LocalDefId§span: Span§out: Vec<PredicateObligation<'tcx>>§recursion_depth: usize§item: Option<&'tcx Item<'tcx>>

Implementations§

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impl<'a, 'tcx> WfPredicates<'a, 'tcx>

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

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fn cause(&self, code: ObligationCauseCode<'tcx>) -> ObligationCause<'tcx>

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fn normalize(self, infcx: &InferCtxt<'tcx>) -> Vec<PredicateObligation<'tcx>>

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fn compute_trait_pred( &mut self, trait_pred: TraitPredicate<'tcx>, elaborate: Elaborate, )

Pushes the obligations required for trait_ref to be WF into self.out.

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fn compute_negative_trait_pred(&mut self, trait_ref: TraitRef<'tcx>)

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fn compute_alias_term(&mut self, data: AliasTerm<'tcx>)

Pushes the obligations required for an alias (except inherent) to be WF into self.out.

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fn compute_inherent_projection(&mut self, data: AliasTy<'tcx>)

Pushes the obligations required for an inherent alias to be WF into self.out.

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fn compute_projection_args(&mut self, args: GenericArgsRef<'tcx>)

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fn require_sized(&mut self, subty: Ty<'tcx>, cause: ObligationCauseCode<'tcx>)

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fn compute(&mut self, arg: GenericArg<'tcx>)

Pushes all the predicates needed to validate that ty is WF into out.

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fn nominal_obligations( &mut self, def_id: DefId, args: GenericArgsRef<'tcx>, ) -> Vec<PredicateObligation<'tcx>>

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fn from_object_ty( &mut self, ty: Ty<'tcx>, data: &'tcx List<PolyExistentialPredicate<'tcx>>, region: Region<'tcx>, )

Trait Implementations§

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impl<'a, 'tcx> TypeVisitor<TyCtxt<'tcx>> for WfPredicates<'a, 'tcx>

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fn visit_ty(&mut self, t: Ty<'tcx>) -> Self::Result

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fn visit_const(&mut self, c: Const<'tcx>) -> Self::Result

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fn visit_predicate(&mut self, _p: Predicate<'tcx>) -> Self::Result

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type Result = ()

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fn visit_binder<T>(&mut self, t: &Binder<I, T>) -> Self::Result
where T: TypeVisitable<I>,

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fn visit_region(&mut self, r: <I as Interner>::Region) -> Self::Result

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fn visit_clauses(&mut self, p: <I as Interner>::Clauses) -> Self::Result

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fn visit_error( &mut self, _guar: <I as Interner>::ErrorGuaranteed, ) -> Self::Result

Auto Trait Implementations§

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impl<'a, 'tcx> Freeze for WfPredicates<'a, 'tcx>

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

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

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

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

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

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fn in_current_span(self) -> Instrumented<Self>

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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> Same for T

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type Output = T

Should always be Self
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type Error = Infallible

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

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fn upcast(self, interner: I) -> U

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fn upcast_from(from: T, _tcx: I) -> T

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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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where S: Into<Dispatch>,

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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: 72 bytes