Type Definition rustc_middle::ty::subst::SubstsRef

pub type SubstsRef<'tcx> = &'tcx InternalSubsts<'tcx>;

Trait Implementations

impl<'tcx, D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<D> for SubstsRef<'tcx>

fn decode(decoder: &mut D) -> Self

impl<'tcx> Key for SubstsRef<'tcx>

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.

fn default_span(&self, _: 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?

type CacheSelector = DefaultCacheSelector<Self>

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

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

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

impl<'tcx> Relate<'tcx> for SubstsRef<'tcx>

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

impl<'tcx> TypeFoldable<'tcx> for SubstsRef<'tcx>

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

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

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: 8 bytes