Type Alias ExistentialPredicate

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pub type ExistentialPredicate<'tcx> = ExistentialPredicate<TyCtxt<'tcx>>;

Aliased Type§

enum ExistentialPredicate<'tcx> {
    Trait(ExistentialTraitRef<TyCtxt<'tcx>>),
    Projection(ExistentialProjection<TyCtxt<'tcx>>),
    AutoTrait(DefId),
}

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Trait(ExistentialTraitRef<TyCtxt<'tcx>>)

E.g., Iterator.

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Projection(ExistentialProjection<TyCtxt<'tcx>>)

E.g., Iterator::Item = T.

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AutoTrait(DefId)

E.g., Send.

Trait Implementations§

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impl<'tcx> ExistentialPredicateStableCmpExt<'tcx> for ExistentialPredicate<'tcx>

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fn stable_cmp(&self, tcx: TyCtxt<'tcx>, other: &Self) -> Ordering

Compares via an ordering that will not change if modules are reordered or other changes are made to the tree. In particular, this ordering is preserved across incremental compilations.

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impl<'tcx, P: PrettyPrinter<'tcx>> Print<'tcx, P> for ExistentialPredicate<'tcx>

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impl<I> Clone for ExistentialPredicate<I>
where I: Interner,

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fn clone(&self) -> ExistentialPredicate<I>

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<I> Debug for ExistentialPredicate<I>
where I: Interner,

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fn fmt(&self, __f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<I, __D> Decodable<__D> for ExistentialPredicate<I>
where I: Interner, __D: TyDecoder<I = I>, ExistentialTraitRef<I>: Decodable<__D>, ExistentialProjection<I>: Decodable<__D>, <I as Interner>::DefId: Decodable<__D>,

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impl<I, __E> Encodable<__E> for ExistentialPredicate<I>
where I: Interner, __E: TyEncoder<I = I>, ExistentialTraitRef<I>: Encodable<__E>, ExistentialProjection<I>: Encodable<__E>, <I as Interner>::DefId: Encodable<__E>,

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fn encode(&self, __encoder: &mut __E)

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impl<I> Hash for ExistentialPredicate<I>
where I: Interner,

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fn hash<__H>(&self, __state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<I, __CTX> HashStable<__CTX> for ExistentialPredicate<I>

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fn hash_stable( &self, __hcx: &mut __CTX, __hasher: &mut StableHasher<SipHasher128>, )

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impl<I, J> Lift<J> for ExistentialPredicate<I>
where I: Interner, J: Interner, ExistentialTraitRef<I>: Lift<J, Lifted = ExistentialTraitRef<J>>, ExistentialProjection<I>: Lift<J, Lifted = ExistentialProjection<J>>, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>,

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impl<I> PartialEq for ExistentialPredicate<I>
where I: Interner,

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fn eq(&self, __other: &ExistentialPredicate<I>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<I> TypeFoldable<I> for ExistentialPredicate<I>

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fn try_fold_with<__F>( self, __folder: &mut __F, ) -> Result<ExistentialPredicate<I>, <__F as FallibleTypeFolder<I>>::Error>
where __F: FallibleTypeFolder<I>,

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f). Read more
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fn fold_with<F>(self, folder: &mut F) -> Self
where F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.
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impl<I> TypeVisitable<I> for ExistentialPredicate<I>

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fn visit_with<__V>( &self, __visitor: &mut __V, ) -> <__V as TypeVisitor<I>>::Result
where __V: TypeVisitor<I>,

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v). Read more
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impl<I> Copy for ExistentialPredicate<I>
where I: Interner,

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impl<I> Eq for ExistentialPredicate<I>
where I: Interner,

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: 24 bytes

Size for each variant:

  • Trait: 24 bytes
  • Projection: 24 bytes
  • AutoTrait: 12 bytes