[−][src]Enum syntax::ext::base::SyntaxExtension
An enum representing the different kinds of syntax extensions.
Variants
Bang
A token-based function-like macro.
Fields of Bang
LegacyBang
An AST-based function-like macro.
Fields of LegacyBang
expander: Box<dyn TTMacroExpander + Sync + Send>
An expander with signature TokenStream -> AST.
def_info: Option<(NodeId, Span)>
Some info about the macro's definition point.
transparency: Transparency
Hygienic properties of identifiers produced by this macro.
allow_internal_unstable: Option<Lrc<[Symbol]>>
Whitelist of unstable features that are treated as stable inside this macro.
allow_internal_unsafe: bool
Suppresses the unsafe_code
lint for code produced by this macro.
local_inner_macros: bool
Enables the macro helper hack (ident!(...)
-> $crate::ident!(...)
) for this macro.
unstable_feature: Option<(Symbol, u32)>
The macro's feature name and tracking issue number if it is unstable.
edition: Edition
Edition of the crate in which this macro is defined.
Attr(Box<dyn AttrProcMacro + Sync + Send>, Edition)
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 known.
Fields of NonMacroAttr
mark_used: bool
Suppresses the unused_attributes
lint for this attribute.
Derive(Box<dyn MultiItemModifier + Sync + Send>, Vec<Symbol>, Edition)
A token-based derive macro.
LegacyDerive(Box<dyn MultiItemModifier + Sync + Send>)
An AST-based derive macro.
Methods
impl SyntaxExtension
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pub fn kind(&self) -> MacroKind
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Returns which kind of macro calls this syntax extension.
pub fn default_transparency(&self) -> Transparency
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pub fn edition(&self, default_edition: Edition) -> Edition
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Auto Trait Implementations
impl !Send for SyntaxExtension
impl !Sync for SyntaxExtension
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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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<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,