Type Alias ExistentialPredicate

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

Aliased Type

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

Variants

Trait(ExistentialTraitRef<TyCtxt<'tcx>>)

E.g., Iterator.

Projection(ExistentialProjection<TyCtxt<'tcx>>)

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

AutoTrait(DefId)

E.g., Send.

Trait Implementations

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

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.

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

fn print(&self, cx: &mut P) -> Result<(), PrintError>

impl<I> Clone for ExistentialPredicate<I>

where I: Interner,

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I> Debug for ExistentialPredicate<I>

where I: Interner,

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

Formats the value using the given formatter.

impl<I, __D> Decodable<__D> for ExistentialPredicate<I>

where I: Interner, __D: Decoder, ExistentialTraitRef<I>: Decodable<__D>, ExistentialProjection<I>: Decodable<__D>, <I as Interner>::DefId: Decodable<__D>,

fn decode(__decoder: &mut __D) -> ExistentialPredicate<I>

impl<I, __E> Encodable<__E> for ExistentialPredicate<I>

where I: Interner, __E: Encoder, ExistentialTraitRef<I>: Encodable<__E>, ExistentialProjection<I>: Encodable<__E>, <I as Interner>::DefId: Encodable<__E>,

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

impl<I> Hash for ExistentialPredicate<I>

where I: Interner,

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

where __H: Hasher,

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<I, __CTX> HashStable<__CTX> for ExistentialPredicate<I>

where I: Interner, ExistentialTraitRef<I>: HashStable<__CTX>, ExistentialProjection<I>: HashStable<__CTX>, <I as Interner>::DefId: HashStable<__CTX>,

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

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>,

type Lifted = ExistentialPredicate<J>

fn lift_to_interner(self, interner: J) -> Option<ExistentialPredicate<J>>

impl<I> PartialEq for ExistentialPredicate<I>

where I: Interner,

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<I> TypeFoldable<I> for ExistentialPredicate<I>

where I: Interner, ExistentialTraitRef<I>: TypeFoldable<I>, ExistentialProjection<I>: TypeFoldable<I>, <I as Interner>::DefId: TypeFoldable<I>,

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).

fn fold_with<__F>(self, __folder: &mut __F) -> ExistentialPredicate<I>

where __F: TypeFolder<I>,

The entry point for folding. To fold a value t with a folder f call: t.fold_with(f).

impl<I> TypeVisitable<I> for ExistentialPredicate<I>

where I: Interner, ExistentialTraitRef<I>: TypeVisitable<I>, ExistentialProjection<I>: TypeVisitable<I>, <I as Interner>::DefId: TypeVisitable<I>,

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).

impl<I> Copy for ExistentialPredicate<I>

where I: Interner,

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