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,
    CVarArgs,
}

The various kinds of type recognized by the compiler.

Variants

Slice(P<Ty>)

A variable-length slice ([T]).

Array(P<Ty>, AnonConst)

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

Ptr(MutTy)

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

Rptr(Option<Lifetime>, MutTy)

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

BareFn(P<BareFnTy>)

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

Never

The never type (!).

Tup(Vec<P<Ty>>)

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

Path(Option<QSelf>, Path)

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)

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

ImplTrait(NodeId, GenericBounds)

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.

Paren(P<Ty>)

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

Typeof(AnonConst)

Unused for now.

Infer

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

ImplicitSelf

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

Mac(Mac)

A macro in the type position.

Err

Placeholder for a kind that has failed to be defined.

CVarArgs

Placeholder for a va_list.

Methods

impl TyKind

pub fn is_implicit_self(&self) -> bool

pub fn is_unit(&self) -> bool

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 Debug for TyKind

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

Formats the value using the given formatter.

impl Encodable for TyKind

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

impl Decodable for TyKind

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