pub struct CanonicalParamEnvCache<'tcx> {
map: Lock<HashMap<ParamEnv<'tcx>, (Canonical<TyCtxt<'tcx>, ParamEnv<'tcx>>, &'tcx [GenericArg<'tcx>]), BuildHasherDefault<FxHasher>>>,
}Fields§
§map: Lock<HashMap<ParamEnv<'tcx>, (Canonical<TyCtxt<'tcx>, ParamEnv<'tcx>>, &'tcx [GenericArg<'tcx>]), BuildHasherDefault<FxHasher>>>Implementations§
source§impl<'tcx> CanonicalParamEnvCache<'tcx>
impl<'tcx> CanonicalParamEnvCache<'tcx>
sourcepub fn get_or_insert(
&self,
tcx: TyCtxt<'tcx>,
key: ParamEnv<'tcx>,
state: &mut OriginalQueryValues<'tcx>,
canonicalize_op: fn(_: TyCtxt<'tcx>, _: ParamEnv<'tcx>, _: &mut OriginalQueryValues<'tcx>) -> Canonical<TyCtxt<'tcx>, ParamEnv<'tcx>>,
) -> Canonical<TyCtxt<'tcx>, ParamEnv<'tcx>>
pub fn get_or_insert( &self, tcx: TyCtxt<'tcx>, key: ParamEnv<'tcx>, state: &mut OriginalQueryValues<'tcx>, canonicalize_op: fn(_: TyCtxt<'tcx>, _: ParamEnv<'tcx>, _: &mut OriginalQueryValues<'tcx>) -> Canonical<TyCtxt<'tcx>, ParamEnv<'tcx>>, ) -> Canonical<TyCtxt<'tcx>, ParamEnv<'tcx>>
Gets the cached canonical form of key or executes
canonicalize_op and caches the result if not present.
canonicalize_op is intentionally not allowed to be a closure to
statically prevent it from capturing InferCtxt and resolving
inference variables, which invalidates the cache.
Trait Implementations§
source§impl<'tcx> Default for CanonicalParamEnvCache<'tcx>
impl<'tcx> Default for CanonicalParamEnvCache<'tcx>
source§fn default() -> CanonicalParamEnvCache<'tcx>
fn default() -> CanonicalParamEnvCache<'tcx>
Returns the “default value” for a type. Read more
Auto Trait Implementations§
impl<'tcx> !Freeze for CanonicalParamEnvCache<'tcx>
impl<'tcx> !RefUnwindSafe for CanonicalParamEnvCache<'tcx>
impl<'tcx> Send for CanonicalParamEnvCache<'tcx>
impl<'tcx> !Sync for CanonicalParamEnvCache<'tcx>
impl<'tcx> Unpin for CanonicalParamEnvCache<'tcx>
impl<'tcx> !UnwindSafe for CanonicalParamEnvCache<'tcx>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Creates a filterable data provider with the given name for debugging. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moresource§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
impl<T> ErasedDestructor for Twhere
T: 'static,
impl<T> MaybeSendSync for T
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: 40 bytes