Struct ExistentialProjection

pub struct ExistentialProjection<I>
where
    I: Interner,
{
    pub def_id: <I as Interner>::DefId,
    pub args: <I as Interner>::GenericArgs,
    pub term: <I as Interner>::Term,
}

A ProjectionPredicate for an ExistentialTraitRef.

Fields

def_id: <I as Interner>::DefId

args: <I as Interner>::GenericArgs

term: <I as Interner>::Term

Implementations

impl<I> ExistentialProjection<I>

where I: Interner,

pub fn trait_ref(&self, interner: I) -> ExistentialTraitRef<I>

Extracts the underlying existential trait reference from this projection. For example, if this is a projection of exists T. <T as Iterator>::Item == X, then this function would return an exists T. T: Iterator existential trait reference.

pub fn with_self_ty( &self, interner: I, self_ty: <I as Interner>::Ty, ) -> ProjectionPredicate<I>

pub fn erase_self_ty( interner: I, projection_predicate: ProjectionPredicate<I>, ) -> ExistentialProjection<I>

Trait Implementations

impl<I> Clone for ExistentialProjection<I>

where I: Interner,

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I> Debug for ExistentialProjection<I>

where I: Interner,

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

Formats the value using the given formatter.

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

where I: Interner, __D: TyDecoder<I = I>, <I as Interner>::DefId: Decodable<__D>, <I as Interner>::GenericArgs: Decodable<__D>, <I as Interner>::Term: Decodable<__D>,

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

impl<I> Display for ExistentialProjection<I>

where I: Interner,

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

Formats the value using the given formatter.

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

where I: Interner, __E: TyEncoder<I = I>, <I as Interner>::DefId: Encodable<__E>, <I as Interner>::GenericArgs: Encodable<__E>, <I as Interner>::Term: Encodable<__E>,

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

impl<I> Hash for ExistentialProjection<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 ExistentialProjection<I>

where I: Interner, <I as Interner>::DefId: HashStable<__CTX>, <I as Interner>::GenericArgs: HashStable<__CTX>, <I as Interner>::Term: HashStable<__CTX>,

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

impl<I, J> Lift<J> for ExistentialProjection<I>

where I: Interner, J: Interner, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>, <I as Interner>::Term: Lift<J, Lifted = <J as Interner>::Term>,

type Lifted = ExistentialProjection<J>

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

impl<I> PartialEq for ExistentialProjection<I>

where I: Interner,

fn eq(&self, __other: &ExistentialProjection<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<'tcx, P> Print<'tcx, P> for ExistentialProjection<TyCtxt<'tcx>>

where P: PrettyPrinter<'tcx>,

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

impl<I> Relate<I> for ExistentialProjection<I>

where I: Interner,

fn relate<R>( relation: &mut R, a: ExistentialProjection<I>, b: ExistentialProjection<I>, ) -> Result<ExistentialProjection<I>, TypeError<I>>

where R: TypeRelation<I>,

impl<I> TypeFoldable<I> for ExistentialProjection<I>

where I: Interner, <I as Interner>::DefId: TypeFoldable<I>, <I as Interner>::GenericArgs: TypeFoldable<I>, <I as Interner>::Term: TypeFoldable<I>,

fn try_fold_with<__F>( self, __folder: &mut __F, ) -> Result<ExistentialProjection<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) -> 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.

impl<I> TypeVisitable<I> for ExistentialProjection<I>

where I: Interner, <I as Interner>::DefId: TypeVisitable<I>, <I as Interner>::GenericArgs: TypeVisitable<I>, <I as Interner>::Term: 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 ExistentialProjection<I>

where I: Interner,

impl<I> Eq for ExistentialProjection<I>

where I: Interner,

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.