Enum rustc_ast::ast::TyKind

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pub enum TyKind {
Show 17 variants Slice(P<Ty>), Array(P<Ty>, AnonConst), Ptr(MutTy), Ref(Option<Lifetime>, MutTy), BareFn(P<BareFnTy>), Never, Tup(Vec<P<Ty>>), Path(Option<P<QSelf>>, Path), TraitObject(GenericBoundsTraitObjectSyntax), ImplTrait(NodeIdGenericBounds), Paren(P<Ty>), Typeof(AnonConst), Infer, ImplicitSelf, MacCall(P<MacCall>), Err, CVarArgs,
}
Expand description

The various kinds of type recognized by the compiler.

Variants§

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Slice(P<Ty>)

A variable-length slice ([T]).

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Array(P<Ty>, AnonConst)

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

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Ptr(MutTy)

A raw pointer (*const T or *mut T).

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Ref(Option<Lifetime>, MutTy)

A reference (&'a T or &'a mut T).

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BareFn(P<BareFnTy>)

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

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Never

The never type (!).

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Tup(Vec<P<Ty>>)

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

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Path(Option<P<QSelf>>, Path)

A path (module::module::...::Type), optionally “qualified”, e.g., <Vec<T> as SomeTrait>::SomeType.

Type parameters are stored in the Path itself.

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TraitObject(GenericBoundsTraitObjectSyntax)

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

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ImplTrait(NodeIdGenericBounds)

An impl Bound1 + Bound2 + Bound3 type where Bound is a trait or a lifetime.

The NodeId exists to prevent lowering from having to generate NodeIds on the fly, which would complicate the generation of opaque type Foo = impl Trait items significantly.

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Paren(P<Ty>)

No-op; kept solely so that we can pretty-print faithfully.

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Typeof(AnonConst)

Unused for now.

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Infer

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

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ImplicitSelf

Inferred type of a self or &self argument in a method.

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MacCall(P<MacCall>)

A macro in the type position.

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Err

Placeholder for a kind that has failed to be defined.

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CVarArgs

Placeholder for a va_list.

Implementations§

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impl TyKind

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pub fn is_implicit_self(&self) -> bool

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pub fn is_unit(&self) -> bool

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pub fn is_simple_path(&self) -> Option<Symbol>

Trait Implementations§

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impl Clone for TyKind

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fn clone(&self) -> TyKind

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 Debug for TyKind

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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<__D: Decoder> Decodable<__D> for TyKind

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

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impl<__E: Encoder> Encodable<__E> for TyKind

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

Auto Trait Implementations§

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impl !RefUnwindSafe for TyKind

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impl !Send for TyKind

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impl !Sync for TyKind

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impl Unpin for TyKind

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impl !UnwindSafe for TyKind

Blanket Implementations§

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impl<T> Any for Twhere
    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> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,

const: unstable · 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.

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impl<T> ToOwned for Twhere
    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 Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.

Layout§

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: 40 bytes

Size for each variant:

  • Slice: 15 bytes
  • Array: 31 bytes
  • Ptr: 23 bytes
  • Ref: 39 bytes
  • BareFn: 15 bytes
  • Never: 0 bytes
  • Tup: 31 bytes
  • Path: 39 bytes
  • TraitObject: 31 bytes
  • ImplTrait: 31 bytes
  • Paren: 15 bytes
  • Typeof: 23 bytes
  • Infer: 0 bytes
  • ImplicitSelf: 0 bytes
  • MacCall: 15 bytes
  • Err: 0 bytes
  • CVarArgs: 0 bytes