pub struct SolverRelating<'infcx, Infcx, I>where
I: Interner,{
infcx: &'infcx Infcx,
structurally_relate_aliases: StructurallyRelateAliases,
param_env: <I as Interner>::ParamEnv,
ambient_variance: Variance,
goals: Vec<Goal<I, <I as Interner>::Predicate>>,
cache: DelayedSet<(Variance, <I as Interner>::Ty, <I as Interner>::Ty)>,
}
Expand description
Enforce that a
is equal to or a subtype of b
.
Fields§
§infcx: &'infcx Infcx
§structurally_relate_aliases: StructurallyRelateAliases
§param_env: <I as Interner>::ParamEnv
§ambient_variance: Variance
§goals: Vec<Goal<I, <I as Interner>::Predicate>>
§cache: DelayedSet<(Variance, <I as Interner>::Ty, <I as Interner>::Ty)>
Implementations§
source§impl<'infcx, Infcx, I> SolverRelating<'infcx, Infcx, I>where
Infcx: InferCtxtLike<Interner = I>,
I: Interner,
impl<'infcx, Infcx, I> SolverRelating<'infcx, Infcx, I>where
Infcx: InferCtxtLike<Interner = I>,
I: Interner,
pub fn new( infcx: &'infcx Infcx, structurally_relate_aliases: StructurallyRelateAliases, ambient_variance: Variance, param_env: <I as Interner>::ParamEnv, ) -> SolverRelating<'infcx, Infcx, I>
Trait Implementations§
source§impl<Infcx, I> PredicateEmittingRelation<Infcx> for SolverRelating<'_, Infcx, I>where
Infcx: InferCtxtLike<Interner = I>,
I: Interner,
impl<Infcx, I> PredicateEmittingRelation<Infcx> for SolverRelating<'_, Infcx, I>where
Infcx: InferCtxtLike<Interner = I>,
I: Interner,
fn span(&self) -> <I as Interner>::Span
fn param_env(&self) -> <I as Interner>::ParamEnv
source§fn structurally_relate_aliases(&self) -> StructurallyRelateAliases
fn structurally_relate_aliases(&self) -> StructurallyRelateAliases
Whether aliases should be related structurally. This is pretty much
always
No
unless you’re equating in some specific locations of the
new solver. See the comments in these use-cases for more details.source§fn register_predicates(
&mut self,
obligations: impl IntoIterator- >,
)
fn register_predicates(
&mut self,
obligations: impl IntoIterator- >,
)
Register predicates that must hold in order for this relation to hold.
This uses the default
param_env
of the obligation.source§fn register_goals(
&mut self,
obligations: impl IntoIterator<Item = Goal<I, <I as Interner>::Predicate>>,
)
fn register_goals( &mut self, obligations: impl IntoIterator<Item = Goal<I, <I as Interner>::Predicate>>, )
Register obligations that must hold in order for this relation to hold
source§impl<Infcx, I> TypeRelation<I> for SolverRelating<'_, Infcx, I>where
Infcx: InferCtxtLike<Interner = I>,
I: Interner,
impl<Infcx, I> TypeRelation<I> for SolverRelating<'_, Infcx, I>where
Infcx: InferCtxtLike<Interner = I>,
I: Interner,
fn cx(&self) -> I
source§fn relate_item_args(
&mut self,
item_def_id: <I as Interner>::DefId,
a_arg: <I as Interner>::GenericArgs,
b_arg: <I as Interner>::GenericArgs,
) -> Result<<I as Interner>::GenericArgs, TypeError<I>>
fn relate_item_args( &mut self, item_def_id: <I as Interner>::DefId, a_arg: <I as Interner>::GenericArgs, b_arg: <I as Interner>::GenericArgs, ) -> Result<<I as Interner>::GenericArgs, TypeError<I>>
Relate the two args for the given item. The default
is to look up the variance for the item and proceed
accordingly.
source§fn relate_with_variance<T>(
&mut self,
variance: Variance,
_info: VarianceDiagInfo<I>,
a: T,
b: T,
) -> Result<T, TypeError<I>>where
T: Relate<I>,
fn relate_with_variance<T>(
&mut self,
variance: Variance,
_info: VarianceDiagInfo<I>,
a: T,
b: T,
) -> Result<T, TypeError<I>>where
T: Relate<I>,
Switch variance for the purpose of relating
a
and b
.fn tys( &mut self, a: <I as Interner>::Ty, b: <I as Interner>::Ty, ) -> Result<<I as Interner>::Ty, TypeError<I>>
fn regions( &mut self, a: <I as Interner>::Region, b: <I as Interner>::Region, ) -> Result<<I as Interner>::Region, TypeError<I>>
fn consts( &mut self, a: <I as Interner>::Const, b: <I as Interner>::Const, ) -> Result<<I as Interner>::Const, TypeError<I>>
fn binders<T>(
&mut self,
a: Binder<I, T>,
b: Binder<I, T>,
) -> Result<Binder<I, T>, TypeError<I>>where
T: Relate<I>,
Auto Trait Implementations§
impl<'infcx, Infcx, I> Freeze for SolverRelating<'infcx, Infcx, I>
impl<'infcx, Infcx, I> RefUnwindSafe for SolverRelating<'infcx, Infcx, I>where
<I as Interner>::ParamEnv: RefUnwindSafe,
Infcx: RefUnwindSafe,
<I as Interner>::Predicate: RefUnwindSafe,
<I as Interner>::Ty: RefUnwindSafe,
impl<'infcx, Infcx, I> Send for SolverRelating<'infcx, Infcx, I>
impl<'infcx, Infcx, I> Sync for SolverRelating<'infcx, Infcx, I>
impl<'infcx, Infcx, I> Unpin for SolverRelating<'infcx, Infcx, I>
impl<'infcx, Infcx, I> UnwindSafe for SolverRelating<'infcx, Infcx, I>where
<I as Interner>::ParamEnv: UnwindSafe,
Infcx: RefUnwindSafe,
<I as Interner>::Predicate: UnwindSafe,
<I as Interner>::Ty: UnwindSafe,
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: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.