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## AliasTyKind

# Enum AliasTyKind

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    pub enum AliasTyKind<I: Interner> {
        Projection {
            def_id: I::TraitAssocTyId,
        },
        Inherent {
            def_id: I::InherentAssocTyId,
        },
        Opaque {
            def_id: I::OpaqueTyId,
        },
        Free {
            def_id: I::FreeTyAliasId,
        },
    }

## Variants§

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### Projection

A projection `<Type as Trait>::AssocType`.

Can get normalized away if monomorphic enough.

The `def_id` is the `DefId` of the `TraitItem` for the associated type.

Note that the `def_id` is not the `DefId` of the `TraitRef` containing this associated type, which is in `interner.associated_item(def_id).container`, aka. `interner.parent(def_id)`.

#### Fields

§`def_id: I::TraitAssocTyId`
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### Inherent

An associated type in an inherent `impl`

The `def_id` is the `DefId` of the `ImplItem` for the associated type.

#### Fields

§`def_id: I::InherentAssocTyId`
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### Opaque

An opaque type (usually from `impl Trait` in type aliases or function return types)

`def_id` is the `DefId` of the `OpaqueType` item.

Can only be normalized away in `PostAnalysis` mode or its defining scope.

During codegen, `interner.type_of(def_id)` can be used to get the type of the underlying type if the type is an opaque.

#### Fields

§`def_id: I::OpaqueTyId`
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### Free

A type alias that actually checks its trait bounds.

Currently only used if the type alias references opaque types. Can always be normalized away.

#### Fields

§`def_id: I::FreeTyAliasId`

## Implementations§

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### impl<I: Interner> AliasTyKind<I>

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#### pub fn descr(self) -> &'static str

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#### pub fn def_id(self) -> I::DefId

## Trait Implementations§

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

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#### fn clone(&self) -> Self

Returns a duplicate of the value. Read more
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#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
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### impl<I> Copy for AliasTyKind<I>
where I: Interner,

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

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

Formats the value using the given formatter. Read more
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### impl<I: Interner, __D: Decoder> Decodable<__D> for AliasTyKind<I>
where I::TraitAssocTyId: Decodable<__D>, I::InherentAssocTyId: Decodable<__D>, I::OpaqueTyId: Decodable<__D>, I::FreeTyAliasId: Decodable<__D>,

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#### fn decode(__decoder: &mut __D) -> Self

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### impl<I: Interner, __E: Encoder> Encodable<__E> for AliasTyKind<I>
where I::TraitAssocTyId: Encodable<__E>, I::InherentAssocTyId: Encodable<__E>, I::OpaqueTyId: Encodable<__E>, I::FreeTyAliasId: Encodable<__E>,

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#### fn encode(&self, __encoder: &mut __E)

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### impl<I: Interner> From<AliasTyKind<I>> for AliasTermKind<I>

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#### fn from(value: AliasTyKind<I>) -> Self

Converts to this type from the input type.
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### impl<I> Hash for AliasTyKind<I>
where I: Interner,

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

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, J> Lift<J> for AliasTyKind<I>
where J: Interner, I: LiftInto<J> + Interner,

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#### type Lifted = AliasTyKind<J>

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#### fn lift_to_interner(self, interner: J) -> Self::Lifted

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

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#### fn eq(&self, __other: &Self) -> bool

Tests for `self` and `other` values to be equal, and is used by `==`.
1.0.0 (const: unstable) · Source§

#### 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: Interner> StableHash for AliasTyKind<I>
where I::TraitAssocTyId: StableHash, I::InherentAssocTyId: StableHash, I::OpaqueTyId: StableHash, I::FreeTyAliasId: StableHash,

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#### fn stable_hash<__Hcx: StableHashCtxt>( &self, __hcx: &mut __Hcx, __hasher: &mut StableHasher, )

## Auto Trait Implementations§

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### impl<I> DynSend for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: DynSend, <I as Interner>::InherentAssocTyId: DynSend, <I as Interner>::OpaqueTyId: DynSend, <I as Interner>::FreeTyAliasId: DynSend,

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### impl<I> DynSync for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: DynSync, <I as Interner>::InherentAssocTyId: DynSync, <I as Interner>::OpaqueTyId: DynSync, <I as Interner>::FreeTyAliasId: DynSync,

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### impl<I> Freeze for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: Freeze, <I as Interner>::InherentAssocTyId: Freeze, <I as Interner>::OpaqueTyId: Freeze, <I as Interner>::FreeTyAliasId: Freeze,

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### impl<I> RefUnwindSafe for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: RefUnwindSafe, <I as Interner>::InherentAssocTyId: RefUnwindSafe, <I as Interner>::OpaqueTyId: RefUnwindSafe, <I as Interner>::FreeTyAliasId: RefUnwindSafe,

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### impl<I> Send for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: Send, <I as Interner>::InherentAssocTyId: Send, <I as Interner>::OpaqueTyId: Send, <I as Interner>::FreeTyAliasId: Send,

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### impl<I> Sync for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: Sync, <I as Interner>::InherentAssocTyId: Sync, <I as Interner>::OpaqueTyId: Sync, <I as Interner>::FreeTyAliasId: Sync,

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### impl<I> Unpin for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: Unpin, <I as Interner>::InherentAssocTyId: Unpin, <I as Interner>::OpaqueTyId: Unpin, <I as Interner>::FreeTyAliasId: Unpin,

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### impl<I> UnsafeUnpin for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: UnsafeUnpin, <I as Interner>::InherentAssocTyId: UnsafeUnpin, <I as Interner>::OpaqueTyId: UnsafeUnpin, <I as Interner>::FreeTyAliasId: UnsafeUnpin,

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### impl<I> UnwindSafe for AliasTyKind<I>
where <I as Interner>::TraitAssocTyId: UnwindSafe, <I as Interner>::InherentAssocTyId: UnwindSafe, <I as Interner>::OpaqueTyId: UnwindSafe, <I as Interner>::FreeTyAliasId: UnwindSafe,

## Blanket Implementations§

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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> CloneToUninit for T
where T: Clone,

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#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. 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<T> ErasedDestructor for T
where T: 'static,

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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<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> ToOwned for T
where T: Clone,

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#### type Owned = T

The resulting type after obtaining ownership.
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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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#### fn clone_into(&self, target: &mut T)

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

## 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.