Enum rustc_hir::hir::TyKind

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pub enum TyKind<'hir> {
Show 16 variants InferDelegation(DefId, InferDelegationKind), Slice(&'hir Ty<'hir>), Array(&'hir Ty<'hir>, ArrayLen), Ptr(MutTy<'hir>), Ref(&'hir Lifetime, MutTy<'hir>), BareFn(&'hir BareFnTy<'hir>), Never, Tup(&'hir [Ty<'hir>]), AnonAdt(ItemId), Path(QPath<'hir>), OpaqueDef(ItemId, &'hir [GenericArg<'hir>], bool), TraitObject(&'hir [PolyTraitRef<'hir>], &'hir Lifetime, TraitObjectSyntax), Typeof(AnonConst), Infer, Err(ErrorGuaranteed), Pat(&'hir Ty<'hir>, &'hir Pat<'hir>),
}
Expand description

The various kinds of types recognized by the compiler.

Variants§

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InferDelegation(DefId, InferDelegationKind)

Actual type should be inherited from DefId signature

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Slice(&'hir Ty<'hir>)

A variable length slice (i.e., [T]).

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Array(&'hir Ty<'hir>, ArrayLen)

A fixed length array (i.e., [T; n]).

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Ptr(MutTy<'hir>)

A raw pointer (i.e., *const T or *mut T).

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Ref(&'hir Lifetime, MutTy<'hir>)

A reference (i.e., &'a T or &'a mut T).

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BareFn(&'hir BareFnTy<'hir>)

A bare function (e.g., fn(usize) -> bool).

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Never

The never type (!).

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Tup(&'hir [Ty<'hir>])

A tuple ((A, B, C, D, ...)).

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AnonAdt(ItemId)

An anonymous struct or union type i.e. struct { foo: Type } or union { foo: Type }

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Path(QPath<'hir>)

A path to a type definition (module::module::...::Type), or an associated type (e.g., <Vec<T> as Trait>::Type or <T>::Target).

Type parameters may be stored in each PathSegment.

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OpaqueDef(ItemId, &'hir [GenericArg<'hir>], bool)

An opaque type definition itself. This is only used for impl Trait.

The generic argument list contains the lifetimes (and in the future possibly parameters) that are actually bound on the impl Trait.

The last parameter specifies whether this opaque appears in a trait definition.

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TraitObject(&'hir [PolyTraitRef<'hir>], &'hir Lifetime, TraitObjectSyntax)

A trait object type Bound1 + Bound2 + Bound3 where Bound is a trait or a lifetime.

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Typeof(AnonConst)

Unused for now.

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Infer

TyKind::Infer means the type should be inferred instead of it having been specified. This can appear anywhere in a type.

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Err(ErrorGuaranteed)

Placeholder for a type that has failed to be defined.

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Pat(&'hir Ty<'hir>, &'hir Pat<'hir>)

Pattern types (pattern_type!(u32 is 1..))

Trait Implementations§

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impl<'hir> Clone for TyKind<'hir>

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fn clone(&self) -> TyKind<'hir>

Returns a copy 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<'hir> Debug for TyKind<'hir>

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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<'hir, __CTX> HashStable<__CTX> for TyKind<'hir>
where __CTX: HashStableContext,

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fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

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impl<'hir> Copy for TyKind<'hir>

Auto Trait Implementations§

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impl<'hir> Freeze for TyKind<'hir>

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impl<'hir> RefUnwindSafe for TyKind<'hir>

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impl<'hir> !Send for TyKind<'hir>

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impl<'hir> !Sync for TyKind<'hir>

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impl<'hir> Unpin for TyKind<'hir>

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impl<'hir> UnwindSafe for TyKind<'hir>

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<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

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

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes

Size for each variant:

  • InferDelegation: 31 bytes
  • Slice: 15 bytes
  • Array: 31 bytes
  • Ptr: 23 bytes
  • Ref: 31 bytes
  • BareFn: 15 bytes
  • Never: 0 bytes
  • Tup: 23 bytes
  • AnonAdt: 7 bytes
  • Path: 31 bytes
  • OpaqueDef: 23 bytes
  • TraitObject: 31 bytes
  • Typeof: 23 bytes
  • Infer: 0 bytes
  • Err: 0 bytes
  • Pat: 23 bytes