Enum rustc::ty::ExistentialPredicate

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

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Variants

Trait(ExistentialTraitRef<'tcx>)

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e.g. Iterator

Projection(ExistentialProjection<'tcx>)

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e.g. Iterator::Item = T

AutoTrait(DefId)

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e.g. Send

Methods

impl<'a, 'gcx, 'tcx> ExistentialPredicate<'tcx>

pub fn cmp(&self, tcx: TyCtxt<'a, 'gcx, 'tcx>, other: &Self) -> Ordering

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Trait Implementations

impl<'gcx> HashStable<StableHashingContext<'gcx>> for ExistentialPredicate<'gcx>

fn hash_stable<W: StableHasherResult>(
    &self,
    hcx: &mut StableHashingContext<'gcx>,
    hasher: &mut StableHasher<W>
)

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impl<'tcx> TypeFoldable<'tcx> for ExistentialPredicate<'tcx>

fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
    &self,
    folder: &mut F
) -> Self

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fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
    &self,
    folder: &mut F
) -> Self

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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn has_regions_escaping_depth(&self, depth: u32) -> bool

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fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_erasable_regions(&self) -> bool

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fn is_normalized_for_trans(&self) -> bool

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fn is_global(&self) -> bool

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Errs on the side of returning false.

impl<'tcx> Debug for ExistentialPredicate<'tcx>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'tcx> Copy for ExistentialPredicate<'tcx>

impl<'tcx> Clone for ExistentialPredicate<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> PartialEq for ExistentialPredicate<'tcx>

fn eq(&self, __arg_0: &ExistentialPredicate<'tcx>) -> bool

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

fn ne(&self, __arg_0: &ExistentialPredicate<'tcx>) -> bool

This method tests for !=.

impl<'tcx> Eq for ExistentialPredicate<'tcx>

impl<'tcx> Hash for ExistentialPredicate<'tcx>

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl<'tcx> Encodable for ExistentialPredicate<'tcx>

fn encode<__S: Encoder>(&self, __arg_0: &mut __S) -> Result<(), __S::Error>

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impl<'tcx> Decodable for ExistentialPredicate<'tcx>

fn decode<__D: Decoder>(
    __arg_0: &mut __D
) -> Result<ExistentialPredicate<'tcx>, __D::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

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