Enum rustc_middle::ty::trait_def::TraitSpecializationKind

pub enum TraitSpecializationKind {
    None,
    Marker,
    AlwaysApplicable,
}

Whether this trait is treated specially by the standard library specialization lint.

Variants

None

The default. Specializing on this trait is not allowed.

Marker

Specializing on this trait is allowed because it doesn't have any methods. For example Sized or FusedIterator. Applies to traits with the rustc_unsafe_specialization_marker attribute.

AlwaysApplicable

Specializing on this trait is allowed because all of the impls of this trait are "always applicable". Always applicable means that if X<'x>: T<'y> for any lifetimes, then for<'a, 'b> X<'a>: T<'b>. Applies to traits with the rustc_specialization_trait attribute.

Trait Implementations

impl Clone for TraitSpecializationKind

pub fn clone(&self) -> TraitSpecializationKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for TraitSpecializationKind

impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for TraitSpecializationKind

pub fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for TraitSpecializationKind

pub fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for TraitSpecializationKind

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

impl PartialEq<TraitSpecializationKind> for TraitSpecializationKind

pub fn eq(&self, other: &TraitSpecializationKind) -> bool

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

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl StructuralPartialEq for TraitSpecializationKind