rustc_trait_selection::traits::solve::inspect

Enum ProbeStep

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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,
    },
}

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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.

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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.

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RecordImplArgs

A trait goal was satisfied by an impl candidate.

Fields

§impl_args: Canonical<I, State<I, <I as Interner>::GenericArgs>>
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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.

Fields

§shallow_certainty: Certainty

Trait Implementations§

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impl<I> Debug for ProbeStep<I>
where I: Interner,

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fn fmt(&self, __f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<I> Hash for ProbeStep<I>
where I: Interner,

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fn hash<__H>(&self, __state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<I> PartialEq for ProbeStep<I>
where I: Interner,

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fn eq(&self, __other: &ProbeStep<I>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<I> Eq for ProbeStep<I>
where I: Interner,

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impl<I> DynSend for ProbeStep<I>
where <I as Interner>::CanonicalVars: DynSend, <I as Interner>::GenericArgs: DynSend, <I as Interner>::ParamEnv: DynSend, <I as Interner>::Predicate: DynSend, <I as Interner>::DefId: DynSend, <I as Interner>::ExternalConstraints: DynSend,

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impl<I> DynSync for ProbeStep<I>
where <I as Interner>::CanonicalVars: DynSync, <I as Interner>::GenericArgs: DynSync, <I as Interner>::ParamEnv: DynSync, <I as Interner>::Predicate: DynSync, <I as Interner>::DefId: DynSync, <I as Interner>::ExternalConstraints: DynSync,

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impl<I> Freeze for ProbeStep<I>
where <I as Interner>::CanonicalVars: Freeze, <I as Interner>::GenericArgs: Freeze, <I as Interner>::ParamEnv: Freeze, <I as Interner>::Predicate: Freeze, <I as Interner>::DefId: Freeze, <I as Interner>::ExternalConstraints: Freeze,

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impl<I> RefUnwindSafe for ProbeStep<I>
where <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,

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impl<I> Send for ProbeStep<I>
where <I as Interner>::CanonicalVars: Send, <I as Interner>::GenericArgs: Send, <I as Interner>::ParamEnv: Send, <I as Interner>::Predicate: Send, <I as Interner>::DefId: Send, <I as Interner>::ExternalConstraints: Send,

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impl<I> Sync for ProbeStep<I>
where <I as Interner>::CanonicalVars: Sync, <I as Interner>::GenericArgs: Sync, <I as Interner>::ParamEnv: Sync, <I as Interner>::Predicate: Sync, <I as Interner>::DefId: Sync, <I as Interner>::ExternalConstraints: Sync,

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impl<I> Unpin for ProbeStep<I>
where <I as Interner>::CanonicalVars: Unpin, <I as Interner>::GenericArgs: Unpin, <I as Interner>::ParamEnv: Unpin, <I as Interner>::Predicate: Unpin, <I as Interner>::DefId: Unpin, <I as Interner>::ExternalConstraints: Unpin,

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impl<I> UnwindSafe for ProbeStep<I>
where <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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impl<T> Aligned for T

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const ALIGN: Alignment

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> AnyEq for T
where T: Any + PartialEq,

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fn equals(&self, other: &(dyn Any + 'static)) -> bool

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fn as_any(&self) -> &(dyn Any + 'static)

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> Filterable for T

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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
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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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 more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

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 more
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impl<P> IntoQueryParam<P> for P

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fn into_query_param(self) -> P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T
where T: Send + Sync,

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Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.