pub enum AttrArgs {
Empty,
Delimited(DelimArgs),
Eq(Span, AttrArgsEq),
}
Expand description
Arguments passed to an attribute macro.
Variants§
Empty
No arguments: #[attr]
.
Delimited(DelimArgs)
Delimited arguments: #[attr()/[]/{}]
.
Eq(Span, AttrArgsEq)
Arguments of a key-value attribute: #[attr = "value"]
.
Implementations§
source§impl AttrArgs
impl AttrArgs
pub fn span(&self) -> Option<Span>
sourcepub fn inner_tokens(&self) -> TokenStream
pub fn inner_tokens(&self) -> TokenStream
Tokens inside the delimiters or after =
.
Proc macros see these tokens, for example.
Trait Implementations§
source§impl<__D: SpanDecoder> Decodable<__D> for AttrArgs
impl<__D: SpanDecoder> Decodable<__D> for AttrArgs
source§impl<__E: SpanEncoder> Encodable<__E> for AttrArgs
impl<__E: SpanEncoder> Encodable<__E> for AttrArgs
source§impl<CTX> HashStable<CTX> for AttrArgswhere
CTX: HashStableContext,
impl<CTX> HashStable<CTX> for AttrArgswhere
CTX: HashStableContext,
fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher)
Auto Trait Implementations§
impl Freeze for AttrArgs
impl !RefUnwindSafe for AttrArgs
impl !Send for AttrArgs
impl !Sync for AttrArgs
impl Unpin for AttrArgs
impl !UnwindSafe for AttrArgs
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
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: 48 bytes
Size for each variant:
Empty
: 0 bytesDelimited
: 32 bytesEq
: 48 bytes