Enum rustc_ast::ast::ItemKind

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pub enum ItemKind {
Show 19 variants ExternCrate(Option<Symbol>), Use(UseTree), Static(Box<StaticItem>), Const(Box<ConstItem>), Fn(Box<Fn>), Mod(Safety, ModKind), ForeignMod(ForeignMod), GlobalAsm(Box<InlineAsm>), TyAlias(Box<TyAlias>), Enum(EnumDef, Generics), Struct(VariantData, Generics), Union(VariantData, Generics), Trait(Box<Trait>), TraitAlias(Generics, GenericBounds), Impl(Box<Impl>), MacCall(P<MacCall>), MacroDef(MacroDef), Delegation(Box<Delegation>), DelegationMac(Box<DelegationMac>),
}

Variants§

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ExternCrate(Option<Symbol>)

An extern crate item, with the optional original crate name if the crate was renamed.

E.g., extern crate foo or extern crate foo_bar as foo.

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Use(UseTree)

A use declaration item (use).

E.g., use foo;, use foo::bar; or use foo::bar as FooBar;.

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Static(Box<StaticItem>)

A static item (static).

E.g., static FOO: i32 = 42; or static FOO: &'static str = "bar";.

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Const(Box<ConstItem>)

A constant item (const).

E.g., const FOO: i32 = 42;.

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Fn(Box<Fn>)

A function declaration (fn).

E.g., fn foo(bar: usize) -> usize { .. }.

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Mod(Safety, ModKind)

A module declaration (mod).

E.g., mod foo; or mod foo { .. }. unsafe keyword on modules is accepted syntactically for macro DSLs, but not semantically by Rust.

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ForeignMod(ForeignMod)

An external module (extern).

E.g., extern {} or extern "C" {}.

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GlobalAsm(Box<InlineAsm>)

Module-level inline assembly (from global_asm!()).

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TyAlias(Box<TyAlias>)

A type alias (type).

E.g., type Foo = Bar<u8>;.

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Enum(EnumDef, Generics)

An enum definition (enum).

E.g., enum Foo<A, B> { C<A>, D<B> }.

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Struct(VariantData, Generics)

A struct definition (struct).

E.g., struct Foo<A> { x: A }.

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Union(VariantData, Generics)

A union definition (union).

E.g., union Foo<A, B> { x: A, y: B }.

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Trait(Box<Trait>)

A trait declaration (trait).

E.g., trait Foo { .. }, trait Foo<T> { .. } or auto trait Foo {}.

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TraitAlias(Generics, GenericBounds)

Trait alias

E.g., trait Foo = Bar + Quux;.

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Impl(Box<Impl>)

An implementation.

E.g., impl<A> Foo<A> { .. } or impl<A> Trait for Foo<A> { .. }.

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MacCall(P<MacCall>)

A macro invocation.

E.g., foo!(..).

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MacroDef(MacroDef)

A macro definition.

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Delegation(Box<Delegation>)

A single delegation item (reuse).

E.g. reuse <Type as Trait>::name { target_expr_template }.

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DelegationMac(Box<DelegationMac>)

A list delegation item (reuse prefix::{a, b, c}). Treated similarly to a macro call and expanded early.

Implementations§

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impl ItemKind

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pub fn article(&self) -> &'static str

“a” or “an”

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

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pub fn generics(&self) -> Option<&Generics>

Trait Implementations§

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impl Clone for ItemKind

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fn clone(&self) -> ItemKind

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 ItemKind

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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: SpanDecoder> Decodable<__D> for ItemKind

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

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impl<__E: SpanEncoder> Encodable<__E> for ItemKind

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

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impl From<AssocItemKind> for ItemKind

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fn from(assoc_item_kind: AssocItemKind) -> ItemKind

Converts to this type from the input type.
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impl From<ForeignItemKind> for ItemKind

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fn from(foreign_item_kind: ForeignItemKind) -> ItemKind

Converts to this type from the input type.
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impl NoopVisitItemKind for ItemKind

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fn noop_visit(&mut self, vis: &mut impl MutVisitor)

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impl TryFrom<ItemKind> for AssocItemKind

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type Error = ItemKind

The type returned in the event of a conversion error.
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fn try_from(item_kind: ItemKind) -> Result<AssocItemKind, ItemKind>

Performs the conversion.
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impl TryFrom<ItemKind> for ForeignItemKind

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type Error = ItemKind

The type returned in the event of a conversion error.
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fn try_from(item_kind: ItemKind) -> Result<ForeignItemKind, ItemKind>

Performs the conversion.
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impl WalkItemKind for ItemKind

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fn walk<'a, V: Visitor<'a>>( &'a self, item: &'a Item<Self>, _ctxt: AssocCtxt, visitor: &mut V ) -> V::Result

Auto Trait Implementations§

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> 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> 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<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,

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: 64 bytes

Size for each variant:

  • ExternCrate: 12 bytes
  • Use: 64 bytes
  • Static: 16 bytes
  • Const: 16 bytes
  • Fn: 16 bytes
  • Mod: 56 bytes
  • ForeignMod: 56 bytes
  • GlobalAsm: 16 bytes
  • TyAlias: 16 bytes
  • Enum: 56 bytes
  • Struct: 64 bytes
  • Union: 64 bytes
  • Trait: 16 bytes
  • TraitAlias: 64 bytes
  • Impl: 16 bytes
  • MacCall: 16 bytes
  • MacroDef: 24 bytes
  • Delegation: 16 bytes
  • DelegationMac: 16 bytes