Struct Attr

pub struct Attr {
    pub id: AttrId,
    pub path: Interned<ModPath>,
    pub input: Option<Box<AttrInput>>,
    pub ctxt: SyntaxContextId,
}

Fields

id: AttrId

path: Interned<ModPath>

input: Option<Box<AttrInput>>

ctxt: SyntaxContextId

Implementations

impl Attr

pub fn path(&self) -> &ModPath

impl Attr

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

#[path = “string”]

pub fn string_value_with_span( &self, ) -> Option<(&Symbol, SpanData<SyntaxContextId>)>

#[path = “string”]

pub fn string_value_unescape(&self) -> Option<Cow<'_, str>>

pub fn single_ident_value(&self) -> Option<&Ident<SpanData<SyntaxContextId>>>

#[path(ident)]

pub fn token_tree_value(&self) -> Option<&Subtree<SpanData<SyntaxContextId>>>

#[path TokenTree]

pub fn parse_path_comma_token_tree<'a>( &'a self, db: &'a dyn ExpandDatabase, ) -> Option<impl Iterator<Item = (ModPath, SpanData<SyntaxContextId>)> + 'a>

Parses this attribute as a token tree consisting of comma separated paths.

pub fn cfg(&self) -> Option<CfgExpr>

Trait Implementations

impl Clone for Attr

fn clone(&self) -> Attr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Attr

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

Formats the value using the given formatter.

impl PartialEq for Attr

fn eq(&self, other: &Attr) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Attr

impl StructuralPartialEq for Attr