Struct rustc_ast::ast::Item

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pub struct Item<K = ItemKind> {
    pub attrs: AttrVec,
    pub id: NodeId,
    pub span: Span,
    pub vis: Visibility,
    pub ident: Ident,
    pub kind: K,
    pub tokens: Option<LazyAttrTokenStream>,
}
Expand description

An item definition.

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§attrs: AttrVec§id: NodeId§span: Span§vis: Visibility§ident: Ident

The name of the item. It might be a dummy name in case of anonymous items.

§kind: K§tokens: Option<LazyAttrTokenStream>

Original tokens this item was parsed from. This isn’t necessarily available for all items, although over time more and more items should have this be Some. Right now this is primarily used for procedural macros, notably custom attributes.

Note that the tokens here do not include the outer attributes, but will include inner attributes.

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impl Item

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pub fn span_with_attributes(&self) -> Span

Return the span that encompasses the attributes.

Trait Implementations§

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impl !AstDeref for Item

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type Target

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fn ast_deref(&self) -> &Self::Target

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fn ast_deref_mut(&mut self) -> &mut Self::Target

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impl<K: Clone> Clone for Item<K>

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fn clone(&self) -> Item<K>

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<K: Debug> Debug for Item<K>

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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<K, __D: Decoder> Decodable<__D> for Item<K>where
    K: Decodable<__D>,

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

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impl DummyAstNode for Item

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fn dummy() -> Self

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impl<K, __E: Encoder> Encodable<__E> for Item<K>where
    K: Encodable<__E>,

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

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impl HasAttrs for Item

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const SUPPORTS_CUSTOM_INNER_ATTRS: bool = true

This is true if this HasAttrs might support ‘custom’ (proc-macro) inner attributes. Attributes like #![cfg] and #![cfg_attr] are not considered ‘custom’ attributes. Read more
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fn attrs(&self) -> &[Attribute]

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fn visit_attrs(&mut self, f: impl FnOnce(&mut AttrVec))

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impl HasNodeId for Item

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fn node_id(&self) -> NodeId

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fn node_id_mut(&mut self) -> &mut NodeId

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impl HasSpan for Item

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fn span(&self) -> Span

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impl HasTokens for Item

Auto Trait Implementations§

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impl<K = ItemKind> !RefUnwindSafe for Item<K>

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impl<K = ItemKind> !Send for Item<K>

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impl<K = ItemKind> !Sync for Item<K>

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impl<K> Unpin for Item<K>where
    K: Unpin,

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impl<K = ItemKind> !UnwindSafe for Item<K>

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

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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: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.