Type Alias rustc_middle::query::queries::limits::Key

pub type Key<'tcx> = ();

Trait Implementations

impl<'tcx> DepNodeParams<TyCtxt<'tcx>> for ()

fn fingerprint_style() -> FingerprintStyle

fn to_fingerprint(&self, _: TyCtxt<'tcx>) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous).

fn recover(_: TyCtxt<'tcx>, _: &DepNode) -> Option<Self>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it.

fn to_debug_str(&self, _: Tcx) -> String

impl EraseType for ()

type Result = [u8; 0]

impl Key for ()

type CacheSelector = SingleCacheSelector

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?

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> Lift<'tcx> for ()

type Lifted = ()

fn lift_to_tcx(self, _: TyCtxt<'tcx>) -> Option<Self>

impl ParameterizedOverTcx for ()

type Value<'tcx> = ()

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.

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