# Enum rustc_next_trait_solver::solve::inspect::ProbeKind

source ·

    pub enum ProbeKind<I>where
        I: Interner,{
        Root {
            result: Result<Canonical<I, Response<I>>, NoSolution>,
        },
        TryNormalizeNonRigid {
            result: Result<Canonical<I, Response<I>>, NoSolution>,
        },
        NormalizedSelfTyAssembly,
        TraitCandidate {
            source: CandidateSource<I>,
            result: Result<Canonical<I, Response<I>>, NoSolution>,
        },
        UnsizeAssembly,
        UpcastProjectionCompatibility,
        ShadowedEnvProbing,
        OpaqueTypeStorageLookup {
            result: Result<Canonical<I, Response<I>>, NoSolution>,
        },
    }

Expand description

What kind of probe we’re in. In case the probe represents a candidate, or the final result of the current goal - via ProbeKind::Root - we also store the QueryResult.

## Variants§

§

### Root

The root inference context while proving a goal.

#### Fields

§`result: Result<Canonical<I, Response<I>>, NoSolution>`
§

### TryNormalizeNonRigid

Trying to normalize an alias by at least one step in `NormalizesTo`.

#### Fields

§`result: Result<Canonical<I, Response<I>>, NoSolution>`
§

### NormalizedSelfTyAssembly

Probe entered when normalizing the self ty during candidate assembly

§

### TraitCandidate

A candidate for proving a trait or alias-relate goal.

#### Fields

§`source: CandidateSource<I>`
§`result: Result<Canonical<I, Response<I>>, NoSolution>`
§

### UnsizeAssembly

Used in the probe that wraps normalizing the non-self type for the unsize trait, which is also structurally matched on.

§

### UpcastProjectionCompatibility

During upcasting from some source object to target object type, used to do a probe to find out what projection type(s) may be used to prove that the source type upholds all of the target type’s object bounds.

§

### ShadowedEnvProbing

Looking for param-env candidates that satisfy the trait ref for a projection.

§

### OpaqueTypeStorageLookup

Try to unify an opaque type with an existing key in the storage.

#### Fields

§`result: Result<Canonical<I, Response<I>>, NoSolution>`

## Trait Implementations§

source§

### impl<I> Clone for ProbeKind<I>
where I: Interner,

source§

#### fn clone(&self) -> ProbeKind<I>

Returns a copy of the value. Read more
1.0.0 · source§

#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
source§

### impl<I> Debug for ProbeKind<I>
where I: Interner,

source§

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

Formats the value using the given formatter. Read more
source§

### impl<I> Hash for ProbeKind<I>
where I: Interner,

source§

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

Feeds this value into the given `Hasher`. Read more
1.3.0 · source§

#### 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
source§

### impl<I> PartialEq for ProbeKind<I>
where I: Interner,

source§

#### fn eq(&self, other: &ProbeKind<I>) -> bool

This method tests for `self` and `other` values to be equal, and is used by `==`.
1.0.0 · source§

#### fn ne(&self, other: &Rhs) -> bool

This method tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

### impl<I> TypeFoldable<I> for ProbeKind<I>
where I: Interner, Result<Canonical<I, Response<I>>, NoSolution>: TypeFoldable<I>, CandidateSource<I>: TypeFoldable<I>,

source§

#### fn try_fold_with<__F>( self, __folder: &mut __F, ) -> Result<ProbeKind<I>, <__F as FallibleTypeFolder<I>>::Error>
where __F: FallibleTypeFolder<I>,

The entry point for folding. To fold a value `t` with a folder `f` call: `t.try_fold_with(f)`. Read more
source§

#### fn fold_with<F>(self, folder: &mut F) -> Self
where F: TypeFolder<I>,

A convenient alternative to `try_fold_with` for use with infallible folders. Do not override this method, to ensure coherence with `try_fold_with`.
source§

### impl<I> TypeVisitable<I> for ProbeKind<I>
where I: Interner, Result<Canonical<I, Response<I>>, NoSolution>: TypeVisitable<I>, CandidateSource<I>: TypeVisitable<I>,

source§

#### fn visit_with<__V>( &self, __visitor: &mut __V, ) -> <__V as TypeVisitor<I>>::Result
where __V: TypeVisitor<I>,

The entry point for visiting. To visit a value `t` with a visitor `v` call: `t.visit_with(v)`. Read more
source§

### impl<I> Copy for ProbeKind<I>
where I: Interner,

source§

### impl<I> Eq for ProbeKind<I>
where I: Interner,

## Auto Trait Implementations§

§

### impl<I> DynSend for ProbeKind<I>
where <I as Interner>::DefId: DynSend, <I as Interner>::DefiningOpaqueTypes: DynSend, <I as Interner>::CanonicalVars: DynSend, <I as Interner>::ExternalConstraints: DynSend, <I as Interner>::GenericArgs: DynSend,

§

### impl<I> DynSync for ProbeKind<I>
where <I as Interner>::DefId: DynSync, <I as Interner>::DefiningOpaqueTypes: DynSync, <I as Interner>::CanonicalVars: DynSync, <I as Interner>::ExternalConstraints: DynSync, <I as Interner>::GenericArgs: DynSync,

§

### impl<I> Freeze for ProbeKind<I>
where <I as Interner>::DefId: Freeze, <I as Interner>::DefiningOpaqueTypes: Freeze, <I as Interner>::CanonicalVars: Freeze, <I as Interner>::ExternalConstraints: Freeze, <I as Interner>::GenericArgs: Freeze,

§

### impl<I> RefUnwindSafe for ProbeKind<I>
where <I as Interner>::DefId: RefUnwindSafe, <I as Interner>::DefiningOpaqueTypes: RefUnwindSafe, <I as Interner>::CanonicalVars: RefUnwindSafe, <I as Interner>::ExternalConstraints: RefUnwindSafe, <I as Interner>::GenericArgs: RefUnwindSafe,

§

### impl<I> Send for ProbeKind<I>
where <I as Interner>::DefId: Send, <I as Interner>::DefiningOpaqueTypes: Send, <I as Interner>::CanonicalVars: Send, <I as Interner>::ExternalConstraints: Send, <I as Interner>::GenericArgs: Send,

§

### impl<I> Sync for ProbeKind<I>
where <I as Interner>::DefId: Sync, <I as Interner>::DefiningOpaqueTypes: Sync, <I as Interner>::CanonicalVars: Sync, <I as Interner>::ExternalConstraints: Sync, <I as Interner>::GenericArgs: Sync,

§

### impl<I> Unpin for ProbeKind<I>
where <I as Interner>::DefId: Unpin, <I as Interner>::DefiningOpaqueTypes: Unpin, <I as Interner>::CanonicalVars: Unpin, <I as Interner>::ExternalConstraints: Unpin, <I as Interner>::GenericArgs: Unpin,

§

### impl<I> UnwindSafe for ProbeKind<I>
where <I as Interner>::DefId: UnwindSafe, <I as Interner>::DefiningOpaqueTypes: UnwindSafe, <I as Interner>::CanonicalVars: UnwindSafe, <I as Interner>::ExternalConstraints: UnwindSafe, <I as Interner>::GenericArgs: UnwindSafe,

## Blanket Implementations§

source§

### impl<T> Aligned for T

source§

#### const ALIGN: Alignment = _

Alignment of `Self`.
source§

### impl<T> Any for T
where T: 'static + ?Sized,

source§

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
source§

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

source§

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

### impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

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

Mutably borrows from an owned value. Read more
source§

### impl<T> CloneToUninit for T
where T: Copy,

source§

#### unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dst`. Read more
source§

### impl<T> CloneToUninit for T
where T: Clone,

source§

#### default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dst`. Read more
source§

### impl<T, R> CollectAndApply<T, R> for T

source§

#### 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<_>>())`.

§

#### type Output = R

source§

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

source§

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

Checks if this value is equivalent to the given key. Read more
source§

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

source§

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

Checks if this value is equivalent to the given key. Read more
source§

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

source§

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

Compare self to `key` and return `true` if they are equal.
source§

### impl<T> From<T> for T

source§

#### fn from(t: T) -> T

Returns the argument unchanged.

source§

### impl<T> Instrument for T

source§

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

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
source§

#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
source§

### impl<T, U> Into<U> for T
where U: From<T>,

source§

#### fn into(self) -> U

Calls `U::from(self)`.

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

source§

### impl<T> IntoEither for T

source§

#### 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
source§

#### 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
source§

### impl<T> Pointable for T

source§

#### const ALIGN: usize = _

The alignment of pointer.
§

#### type Init = T

The type for initializers.
source§

#### unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
source§

#### unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
source§

#### unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
source§

#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
source§

### impl<T> Same for T

§

#### type Output = T

Should always be `Self`
source§

### impl<T> ToOwned for T
where T: Clone,

§

#### type Owned = T

The resulting type after obtaining ownership.
source§

#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

### impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

#### type Error = Infallible

The type returned in the event of a conversion error.
source§

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

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

The type returned in the event of a conversion error.
source§

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

### impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

source§

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

source§

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

source§

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

source§

### impl<T> WithSubscriber for T

source§

#### 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
source§

#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
source§

### impl<'a, T> Captures<'a> for T
where T: ?Sized,

## 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.