[−][src]Struct syntax::ast::Attribute
Metadata associated with an item.
Doc-comments are promoted to attributes that have is_sugared_doc = true
.
Fields
id: AttrId
style: AttrStyle
path: Path
tokens: TokenStream
is_sugared_doc: bool
span: Span
Methods
impl Attribute
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pub fn check_name<T>(&self, name: T) -> bool where
Path: PartialEq<T>,
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Path: PartialEq<T>,
Returns true
if the attribute's path matches the argument. If it matches, then the
attribute is marked as used.
To check the attribute name without marking it used, use the path
field directly.
pub fn ident(&self) -> Option<Ident>
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For a single-segment attribute returns its name, otherwise returns None
.
pub fn name_or_empty(&self) -> LocalInternedString
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pub fn value_str(&self) -> Option<Symbol>
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pub fn meta_item_list(&self) -> Option<Vec<NestedMetaItem>>
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pub fn is_word(&self) -> bool
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pub fn is_meta_item_list(&self) -> bool
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pub fn is_value_str(&self) -> bool
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Indicates if the attribute is a Value String.
impl Attribute
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pub fn meta(&self) -> Option<MetaItem>
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Extracts the MetaItem from inside this Attribute.
pub fn parse<'a, T, F>(&self, sess: &'a ParseSess, f: F) -> PResult<'a, T> where
F: FnMut(&mut Parser<'a>) -> PResult<'a, T>,
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F: FnMut(&mut Parser<'a>) -> PResult<'a, T>,
pub fn parse_list<'a, T, F>(
&self,
sess: &'a ParseSess,
f: F
) -> PResult<'a, Vec<T>> where
F: FnMut(&mut Parser<'a>) -> PResult<'a, T>,
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&self,
sess: &'a ParseSess,
f: F
) -> PResult<'a, Vec<T>> where
F: FnMut(&mut Parser<'a>) -> PResult<'a, T>,
pub fn parse_meta<'a>(&self, sess: &'a ParseSess) -> PResult<'a, MetaItem>
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pub fn with_desugared_doc<T, F>(&self, f: F) -> T where
F: FnOnce(&Attribute) -> T,
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F: FnOnce(&Attribute) -> T,
Converts self to a normal #[doc="foo"] comment, if it is a
comment like ///
or /** */
. (Returns self unchanged for
non-sugared doc attributes.)
Trait Implementations
impl Clone for Attribute
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fn clone(&self) -> Attribute
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Debug for Attribute
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impl Encodable for Attribute
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impl Decodable for Attribute
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Auto Trait Implementations
Blanket Implementations
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Encodable for T where
T: UseSpecializedEncodable + ?Sized,
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T: UseSpecializedEncodable + ?Sized,
impl<T> Decodable for T where
T: UseSpecializedDecodable,
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T: UseSpecializedDecodable,
impl<E> SpecializationError for E
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default fn not_found<S, T>(
trait_name: &'static str,
method_name: &'static str
) -> E where
T: ?Sized,
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trait_name: &'static str,
method_name: &'static str
) -> E where
T: ?Sized,
impl<T> Send for T where
T: ?Sized,
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T: ?Sized,
impl<T> Sync for T where
T: ?Sized,
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T: ?Sized,