Struct Attr

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

Fields

id: AttrId

path: Interned<ModPath>

input: Option<Box<AttrInput>>

ctxt: SyntaxContext

Implementations

impl Attr

pub fn path(&self) -> &ModPath

pub fn expand_cfg_attr( self, db: &dyn ExpandDatabase, cfg_options: &CfgOptions, ) -> impl IntoIterator<Item = Self>

impl Attr

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

#[path = “string”]

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

#[path = “string”]

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

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

#[path(ident)]

pub fn token_tree_value(&self) -> Option<&TopSubtree>

#[path TokenTree]

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

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