Enum rustc_next_trait_solver::solve::inspect::ProbeStep
source · pub enum ProbeStep<I>where
I: Interner,{
AddGoal(GoalSource, Canonical<I, State<I, Goal<I, <I as Interner>::Predicate>>>),
NestedProbe(Probe<I>),
RecordImplArgs {
impl_args: Canonical<I, State<I, <I as Interner>::GenericArgs>>,
},
MakeCanonicalResponse {
shallow_certainty: Certainty,
},
}
Variants§
AddGoal(GoalSource, Canonical<I, State<I, Goal<I, <I as Interner>::Predicate>>>)
We added a goal to the EvalCtxt
which will get proven
the next time EvalCtxt::try_evaluate_added_goals
is called.
NestedProbe(Probe<I>)
A call to probe
while proving the current goal. This is
used whenever there are multiple candidates to prove the
current goal.
RecordImplArgs
A trait goal was satisfied by an impl candidate.
Fields
impl_args: Canonical<I, State<I, <I as Interner>::GenericArgs>>
MakeCanonicalResponse
A call to EvalCtxt::evaluate_added_goals_make_canonical_response
with
Certainty
was made. This is the certainty passed in, so it’s not unified
with the certainty of the try_evaluate_added_goals
that is done within;
if it’s Certainty::Yes
, then we can trust that the candidate is “finished”
and we didn’t force ambiguity for some reason.
Trait Implementations§
impl<I> Eq for ProbeStep<I>where
I: Interner,
Auto Trait Implementations§
impl<I> Freeze for ProbeStep<I>
impl<I> RefUnwindSafe for ProbeStep<I>where
<I as Interner>::DefiningOpaqueTypes: RefUnwindSafe,
<I as Interner>::CanonicalVars: RefUnwindSafe,
<I as Interner>::GenericArgs: RefUnwindSafe,
<I as Interner>::ParamEnv: RefUnwindSafe,
<I as Interner>::Predicate: RefUnwindSafe,
<I as Interner>::DefId: RefUnwindSafe,
<I as Interner>::ExternalConstraints: RefUnwindSafe,
impl<I> Send for ProbeStep<I>
impl<I> Sync for ProbeStep<I>
impl<I> Unpin for ProbeStep<I>
impl<I> UnwindSafe for ProbeStep<I>where
<I as Interner>::DefiningOpaqueTypes: UnwindSafe,
<I as Interner>::CanonicalVars: UnwindSafe,
<I as Interner>::GenericArgs: UnwindSafe,
<I as Interner>::ParamEnv: UnwindSafe,
<I as Interner>::Predicate: UnwindSafe,
<I as Interner>::DefId: UnwindSafe,
<I as Interner>::ExternalConstraints: UnwindSafe,
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T: ?Sized,
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T: ?Sized,
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fn equivalent(&self, key: &K) -> bool
key
and return true
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variant of Either<Self, Self>
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
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Converts self
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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.