pub enum Meta {
Path(Path),
List(MetaList),
NameValue(MetaNameValue),
}
Expand description
Content of a compile-time structured attribute.
This type is available only if Syn is built with the "derive"
or "full"
feature.
Path
A meta path is like the test
in #[test]
.
List
A meta list is like the derive(Copy)
in #[derive(Copy)]
.
NameValue
A name-value meta is like the path = "..."
in #[path = "sys/windows.rs"]
.
Syntax tree enum
This type is a syntax tree enum.
Variants
Path(Path)
List(MetaList)
A structured list within an attribute, like derive(Copy, Clone)
.
NameValue(MetaNameValue)
A name-value pair within an attribute, like feature = "nightly"
.
Implementations
Trait Implementations
sourceimpl From<Meta> for NestedMeta
impl From<Meta> for NestedMeta
sourcefn from(e: Meta) -> NestedMeta
fn from(e: Meta) -> NestedMeta
Converts to this type from the input type.
sourceimpl From<MetaNameValue> for Meta
impl From<MetaNameValue> for Meta
sourcefn from(e: MetaNameValue) -> Meta
fn from(e: MetaNameValue) -> Meta
Converts to this type from the input type.
sourceimpl ToTokens for Meta
impl ToTokens for Meta
sourcefn to_tokens(&self, tokens: &mut TokenStream)
fn to_tokens(&self, tokens: &mut TokenStream)
Write self
to the given TokenStream
. Read more
sourcefn to_token_stream(&self) -> TokenStream
fn to_token_stream(&self) -> TokenStream
Convert self
directly into a TokenStream
object. Read more
sourcefn into_token_stream(self) -> TokenStream
fn into_token_stream(self) -> TokenStream
Convert self
directly into a TokenStream
object. Read more
impl Eq for Meta
Auto Trait Implementations
impl RefUnwindSafe for Meta
impl !Send for Meta
impl !Sync for Meta
impl Unpin for Meta
impl UnwindSafe for Meta
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Spanned for T where
T: Spanned + ?Sized,
impl<T> Spanned for T where
T: Spanned + ?Sized,
sourcefn span(&self) -> Span
fn span(&self) -> Span
Returns a Span
covering the complete contents of this syntax tree
node, or Span::call_site()
if this node is empty. Read more