[−][src]Enum syntax::ext::base::SyntaxExtensionKind
A syntax extension kind.
Variants
Bang(Box<dyn ProcMacro + Sync + Send>)
A token-based function-like macro.
LegacyBang(Box<dyn TTMacroExpander + Sync + Send>)
An AST-based function-like macro.
Attr(Box<dyn AttrProcMacro + Sync + Send>)
A token-based attribute macro.
LegacyAttr(Box<dyn MultiItemModifier + Sync + Send>)
An AST-based attribute macro.
NonMacroAttr
A trivial attribute "macro" that does nothing, only keeps the attribute and marks it as inert, thus making it ineligible for further expansion.
Fields of NonMacroAttr
mark_used: bool
Suppresses the unused_attributes
lint for this attribute.
Derive(Box<dyn MultiItemModifier + Sync + Send>)
A token-based derive macro.
LegacyDerive(Box<dyn MultiItemModifier + Sync + Send>)
An AST-based derive macro.
Auto Trait Implementations
impl Unpin for SyntaxExtensionKind
impl !Send for SyntaxExtensionKind
impl !Sync for SyntaxExtensionKind
impl !RefUnwindSafe for SyntaxExtensionKind
impl !UnwindSafe for SyntaxExtensionKind
Blanket Implementations
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,