Type Alias ExistentialTraitRef

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

Aliased Type

struct ExistentialTraitRef<'tcx> {
    pub def_id: DefId,
    pub args: &'tcx RawList<(), GenericArg<'tcx>>,
    /* private fields */
}

Fields

def_id: DefId

args: &'tcx RawList<(), GenericArg<'tcx>>

Implementations

impl<I> ExistentialTraitRef<I>

where I: Interner,

pub fn new_from_args( interner: I, trait_def_id: <I as Interner>::DefId, args: <I as Interner>::GenericArgs, ) -> ExistentialTraitRef<I>

pub fn new( interner: I, trait_def_id: <I as Interner>::DefId, args: impl IntoIterator>, ) -> ExistentialTraitRef<I>

where <impl IntoIterator as IntoIterator>::Item: Into<<I as Interner>::GenericArg>,

pub fn erase_self_ty( interner: I, trait_ref: TraitRef<I>, ) -> ExistentialTraitRef<I>

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

Object types don’t have a self type specified. Therefore, when we convert the principal trait-ref into a normal trait-ref, you must give some self type. A common choice is mk_err() or some placeholder type.

Trait Implementations

impl<'tcx> EraseType for ExistentialTraitRef<'tcx>

type Result = [u8; 16]

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

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

impl<I> Clone for ExistentialTraitRef<I>

where I: Interner,

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I> Debug for ExistentialTraitRef<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 ExistentialTraitRef<I>

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

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

impl<I> Display for ExistentialTraitRef<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 ExistentialTraitRef<I>

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

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

impl<I> Hash for ExistentialTraitRef<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 ExistentialTraitRef<I>

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

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

impl<I> IntoDiagArg for ExistentialTraitRef<I>

where I: Interner,

fn into_diag_arg(self) -> DiagArgValue

impl<I, J> Lift<J> for ExistentialTraitRef<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>, (): Lift<J, Lifted = ()>,

type Lifted = ExistentialTraitRef<J>

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

impl<I> PartialEq for ExistentialTraitRef<I>

where I: Interner,

fn eq(&self, __other: &ExistentialTraitRef<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> Relate<I> for ExistentialTraitRef<I>

where I: Interner,

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

where R: TypeRelation<I>,

impl<I> TypeFoldable<I> for ExistentialTraitRef<I>

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

fn try_fold_with<__F>( self, __folder: &mut __F, ) -> Result<ExistentialTraitRef<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 ExistentialTraitRef<I>

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

where I: Interner,

impl<I> Eq for ExistentialTraitRef<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: 16 bytes