Struct rustc_hir_analysis::check::wfcheck::WfCheckingCtxt
source · pub(super) struct WfCheckingCtxt<'a, 'tcx> {
pub(super) ocx: ObligationCtxt<'a, 'tcx, FulfillmentError<'tcx>>,
span: Span,
body_def_id: LocalDefId,
param_env: ParamEnv<'tcx>,
}
Fields§
§ocx: ObligationCtxt<'a, 'tcx, FulfillmentError<'tcx>>
§span: Span
§body_def_id: LocalDefId
§param_env: ParamEnv<'tcx>
Implementations§
source§impl<'tcx> WfCheckingCtxt<'_, 'tcx>
impl<'tcx> WfCheckingCtxt<'_, 'tcx>
fn tcx(&self) -> TyCtxt<'tcx>
fn normalize<T>(&self, span: Span, loc: Option<WellFormedLoc>, value: T) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
fn register_wf_obligation( &self, span: Span, loc: Option<WellFormedLoc>, arg: GenericArg<'tcx>, )
source§impl<'tcx> WfCheckingCtxt<'_, 'tcx>
impl<'tcx> WfCheckingCtxt<'_, 'tcx>
sourcefn check_false_global_bounds(&mut self)
fn check_false_global_bounds(&mut self)
Feature gates RFC 2056 – trivial bounds, checking for global bounds that aren’t true.
Methods from Deref<Target = ObligationCtxt<'a, 'tcx, FulfillmentError<'tcx>>>§
pub fn register_obligation(&self, obligation: Obligation<'tcx, Predicate<'tcx>>)
pub fn register_obligations( &self, obligations: impl IntoIterator<Item = Obligation<'tcx, Predicate<'tcx>>>, )
pub fn register_infer_ok_obligations<T>(&self, infer_ok: InferOk<'tcx, T>) -> T
sourcepub fn register_bound(
&self,
cause: ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
ty: Ty<'tcx>,
def_id: DefId,
)
pub fn register_bound( &self, cause: ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, ty: Ty<'tcx>, def_id: DefId, )
Requires that ty
must implement the trait with def_id
in
the given environment. This trait must not have any type
parameters (except for Self
).
pub fn normalize<T>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
value: T,
) -> Twhere
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn eq<T>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
expected: T,
actual: T,
) -> Result<(), TypeError<TyCtxt<'tcx>>>where
T: ToTrace<'tcx>,
sourcepub fn sub<T>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
expected: T,
actual: T,
) -> Result<(), TypeError<TyCtxt<'tcx>>>where
T: ToTrace<'tcx>,
pub fn sub<T>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
expected: T,
actual: T,
) -> Result<(), TypeError<TyCtxt<'tcx>>>where
T: ToTrace<'tcx>,
Checks whether expected
is a subtype of actual
: expected <: actual
.
pub fn relate<T>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
variance: Variance,
expected: T,
actual: T,
) -> Result<(), TypeError<TyCtxt<'tcx>>>where
T: ToTrace<'tcx>,
sourcepub fn sup<T>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
expected: T,
actual: T,
) -> Result<(), TypeError<TyCtxt<'tcx>>>where
T: ToTrace<'tcx>,
pub fn sup<T>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
expected: T,
actual: T,
) -> Result<(), TypeError<TyCtxt<'tcx>>>where
T: ToTrace<'tcx>,
Checks whether expected
is a supertype of actual
: expected :> actual
.
pub fn select_where_possible(&self) -> Vec<E>
pub fn select_all_or_error(&self) -> Vec<E>
pub fn assumed_wf_types_and_report_errors( &self, param_env: ParamEnv<'tcx>, def_id: LocalDefId, ) -> Result<IndexSet<Ty<'tcx>, BuildHasherDefault<FxHasher>>, ErrorGuaranteed>
pub fn make_canonicalized_query_response<T>(
&self,
inference_vars: CanonicalVarValues<TyCtxt<'tcx>>,
answer: T,
) -> Result<&'tcx Canonical<TyCtxt<'tcx>, QueryResponse<'tcx, T>>, NoSolution>where
T: Debug + TypeFoldable<TyCtxt<'tcx>>,
Canonical<TyCtxt<'tcx>, QueryResponse<'tcx, T>>: ArenaAllocatable<'tcx>,
pub fn assumed_wf_types( &self, param_env: ParamEnv<'tcx>, def_id: LocalDefId, ) -> Result<IndexSet<Ty<'tcx>, BuildHasherDefault<FxHasher>>, Vec<E>>
pub fn deeply_normalize<T>(
&self,
cause: &ObligationCause<'tcx>,
param_env: ParamEnv<'tcx>,
value: T,
) -> Result<T, Vec<E>>where
T: TypeFoldable<TyCtxt<'tcx>>,
pub fn structurally_normalize( &self, cause: &ObligationCause<'tcx>, param_env: ParamEnv<'tcx>, value: Ty<'tcx>, ) -> Result<Ty<'tcx>, Vec<E>>
Trait Implementations§
source§impl<'a, 'tcx> Deref for WfCheckingCtxt<'a, 'tcx>
impl<'a, 'tcx> Deref for WfCheckingCtxt<'a, 'tcx>
source§type Target = ObligationCtxt<'a, 'tcx, FulfillmentError<'tcx>>
type Target = ObligationCtxt<'a, 'tcx, FulfillmentError<'tcx>>
The resulting type after dereferencing.
Auto Trait Implementations§
impl<'a, 'tcx> !Freeze for WfCheckingCtxt<'a, 'tcx>
impl<'a, 'tcx> !RefUnwindSafe for WfCheckingCtxt<'a, 'tcx>
impl<'a, 'tcx> !Send for WfCheckingCtxt<'a, 'tcx>
impl<'a, 'tcx> !Sync for WfCheckingCtxt<'a, 'tcx>
impl<'a, 'tcx> Unpin for WfCheckingCtxt<'a, 'tcx>
impl<'a, 'tcx> !UnwindSafe for WfCheckingCtxt<'a, '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: 56 bytes