Struct rustc_ast::ast::Attribute

pub struct Attribute {
    pub kind: AttrKind,
    pub id: AttrId,
    pub style: AttrStyle,
    pub span: Span,
}

Metadata associated with an item.

Fields

kind: AttrKind

id: AttrId

style: AttrStyle

Denotes if the attribute decorates the following construct (outer) or the construct this attribute is contained within (inner).

span: Span

Implementations

impl Attribute

pub fn has_name(&self, name: Symbol) -> bool

pub fn ident(&self) -> Option<Ident>

For a single-segment attribute, returns its name; otherwise, returns None.

pub fn name_or_empty(&self) -> Symbol

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

pub fn meta_item_list(&self) -> Option<Vec<NestedMetaItem>>

pub fn is_word(&self) -> bool

impl Attribute

pub fn is_doc_comment(&self) -> bool

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

pub fn get_normal_item(&self) -> &AttrItem

pub fn unwrap_normal_item(self) -> AttrItem

pub fn meta(&self) -> Option<MetaItem>

Extracts the MetaItem from inside this Attribute.

pub fn tokens(&self) -> AttrAnnotatedTokenStream

Trait Implementations

impl AstLike for Attribute

const SUPPORTS_CUSTOM_INNER_ATTRS: bool

This is true if this AstLike might support ‘custom’ (proc-macro) inner attributes. Attributes like #![cfg] and #![cfg_attr] are not considered ‘custom’ attributes

fn attrs(&self) -> &[Attribute]

fn visit_attrs(&mut self, _f: impl FnOnce(&mut Vec<Attribute>))

fn tokens_mut(&mut self) -> Option<&mut Option<LazyTokenStream>>

impl Clone for Attribute

fn clone(&self) -> Attribute

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Attribute

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

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for Attribute

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

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

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl<AstCtx: HashStableContext> HashStable<AstCtx> for Attribute

fn hash_stable(&self, hcx: &mut AstCtx, hasher: &mut StableHasher)

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: 120 bytes