Type Definition rustc_middle::ty::sty::PolyExistentialTraitRef

source ·
pub type PolyExistentialTraitRef<'tcx> = Binder<'tcx, ExistentialTraitRef<'tcx>>;

Implementations§

source§

impl<'tcx> PolyExistentialTraitRef<'tcx>

source

pub fn def_id(&self) -> DefId

source

pub fn with_self_ty(
    &self,
    tcx: TyCtxt<'tcx>,
    self_ty: Ty<'tcx>
) -> PolyTraitRef<'tcx>

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§

source§

impl<'tcx> Key for PolyExistentialTraitRef<'tcx>

§

type CacheSelector = DefaultCacheSelector<Binder<'tcx, ExistentialTraitRef<'tcx>>>

source§

fn query_crate_is_local(&self) -> bool

Given an instance of this key, what crate is it referring to? This is used to find the provider.
source§

fn default_span(&self, tcx: TyCtxt<'_>) -> Span

In the event that a cycle occurs, if no explicit span has been given for a query with key self, what span should we use?
source§

fn key_as_def_id(&self) -> Option<DefId>

If the key is a DefId or DefId–equivalent, return that DefId. Otherwise, return None.
source§

fn ty_adt_id(&self) -> Option<DefId>

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