Struct rustc_middle::ty::predicate::ExistentialProjection

pub struct ExistentialProjection<'tcx> {
    pub def_id: DefId,
    pub args: GenericArgsRef<'tcx>,
    pub term: Term<'tcx>,
}

A ProjectionPredicate for an ExistentialTraitRef.

Fields

def_id: DefId

args: GenericArgsRef<'tcx>

term: Term<'tcx>

Implementations

impl<'tcx> ExistentialProjection<'tcx>

pub fn trait_ref(&self, tcx: TyCtxt<'tcx>) -> ExistentialTraitRef<'tcx>

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, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx> ) -> ProjectionPredicate<'tcx>

pub fn erase_self_ty( tcx: TyCtxt<'tcx>, projection_predicate: ProjectionPredicate<'tcx> ) -> Self

Trait Implementations

impl<'tcx> Clone for ExistentialProjection<'tcx>

fn clone(&self) -> ExistentialProjection<'tcx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for ExistentialProjection<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for ExistentialProjection<'tcx>

fn decode(__decoder: &mut __D) -> Self

impl<'tcx> Display for ExistentialProjection<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for ExistentialProjection<'tcx>

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

impl<'tcx> Hash for ExistentialProjection<'tcx>

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

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<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for ExistentialProjection<'tcx>

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )

impl<'tcx, '__lifted> Lift<'__lifted> for ExistentialProjection<'tcx>

type Lifted = ExistentialProjection<'__lifted>

fn lift_to_tcx( self, __tcx: TyCtxt<'__lifted> ) -> Option<ExistentialProjection<'__lifted>>

impl<'tcx> Ord for ExistentialProjection<'tcx>

fn cmp(&self, other: &ExistentialProjection<'tcx>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl<'tcx> PartialEq for ExistentialProjection<'tcx>

fn eq(&self, other: &ExistentialProjection<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<'tcx> PartialOrd for ExistentialProjection<'tcx>

fn partial_cmp(&self, other: &ExistentialProjection<'tcx>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

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

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

impl<'tcx> Relate<'tcx> for ExistentialProjection<'tcx>

fn relate<R: TypeRelation<'tcx>>( relation: &mut R, a: ExistentialProjection<'tcx>, b: ExistentialProjection<'tcx> ) -> RelateResult<'tcx, ExistentialProjection<'tcx>>

impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for ExistentialProjection<'tcx>

fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, __folder: &mut __F ) -> Result<Self, __F::Error>

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<'tcx> TypeVisitable<TyCtxt<'tcx>> for ExistentialProjection<'tcx>

fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>( &self, __visitor: &mut __V ) -> __V::Result

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

impl<'tcx> Copy for ExistentialProjection<'tcx>

impl<'tcx> Eq for ExistentialProjection<'tcx>

impl<'tcx> StructuralPartialEq for ExistentialProjection<'tcx>

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