Enum syntax::ast::TyKind

pub enum TyKind {
    Slice(P<Ty>),
    Array(P<Ty>, AnonConst),
    Ptr(MutTy),
    Rptr(Option<Lifetime>, MutTy),
    BareFn(P<BareFnTy>),
    Never,
    Tup(Vec<P<Ty>>),
    Path(Option<QSelf>, Path),
    TraitObject(GenericBounds, TraitObjectSyntax),
    ImplTrait(NodeId, GenericBounds),
    Paren(P<Ty>),
    Typeof(AnonConst),
    Infer,
    ImplicitSelf,
    Mac(Mac),
    Err,
}

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The different kinds of types recognized by the compiler

Variants

Slice(P<Ty>)

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A variable-length slice ([T])

Array(P<Ty>, AnonConst)

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A fixed length array ([T; n])

Ptr(MutTy)

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

Rptr(Option<Lifetime>, MutTy)

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

BareFn(P<BareFnTy>)

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

Never

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The never type (!)

Tup(Vec<P<Ty>>)

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

Path(Option<QSelf>, Path)

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

Type parameters are stored in the Path itself

TraitObject(GenericBounds, TraitObjectSyntax)

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

ImplTrait(NodeId, GenericBounds)

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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 existential type items significantly

Paren(P<Ty>)

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

Typeof(AnonConst)

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Unused for now

Infer

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

ImplicitSelf

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

Mac(Mac)

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Err

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Placeholder for a kind that has failed to be defined.

Methods

impl TyKind

pub fn is_implicit_self(&self) -> bool

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pub fn is_unit(&self) -> bool

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Trait Implementations

impl Clone for TyKind

fn clone(&self) -> TyKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Encodable for TyKind

fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>

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impl Decodable for TyKind

fn decode<__D: Decoder>(d: &mut __D) -> Result<TyKind, __D::Error>

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impl Debug for TyKind

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.