[−][src]Enum syntax::ext::base::SyntaxExtension
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An enum representing the different kinds of syntax extensions.
Variants
NonMacroAttr
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A trivial "extension" that does nothing, only keeps the attribute and marks it as known.
Fields of NonMacroAttr
mark_used: bool | 🔬 This is a nightly-only experimental API. ( |
MultiDecorator(Box<MultiItemDecorator + Sync + Send>)
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A syntax extension that is attached to an item and creates new items based upon it.
#[derive(...)]
is a MultiItemDecorator
.
Prefer ProcMacro or MultiModifier since they are more flexible.
MultiModifier(Box<MultiItemModifier + Sync + Send>)
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A syntax extension that is attached to an item and modifies it in-place. Also allows decoration, i.e., creating new items.
ProcMacro
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A function-like procedural macro. TokenStream -> TokenStream.
Fields of ProcMacro
expander: Box<ProcMacro + Sync + Send> | 🔬 This is a nightly-only experimental API. ( |
allow_internal_unstable: bool | 🔬 This is a nightly-only experimental API. ( |
edition: Edition | 🔬 This is a nightly-only experimental API. ( |
AttrProcMacro(Box<AttrProcMacro + Sync + Send>, Edition)
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An attribute-like procedural macro. TokenStream, TokenStream -> TokenStream. The first TokenSteam is the attribute, the second is the annotated item. Allows modification of the input items and adding new items, similar to MultiModifier, but uses TokenStreams, rather than AST nodes.
NormalTT
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A normal, function-like syntax extension.
bytes!
is a NormalTT
.
Fields of NormalTT
expander: Box<TTMacroExpander + Sync + Send> | 🔬 This is a nightly-only experimental API. ( |
def_info: Option<(NodeId, Span)> | 🔬 This is a nightly-only experimental API. ( |
allow_internal_unstable: bool | 🔬 This is a nightly-only experimental API. ( |
allow_internal_unsafe: bool | 🔬 This is a nightly-only experimental API. ( |
local_inner_macros: bool | 🔬 This is a nightly-only experimental API. ( |
unstable_feature: Option<(Symbol, u32)> | 🔬 This is a nightly-only experimental API. ( |
edition: Edition | 🔬 This is a nightly-only experimental API. ( |
IdentTT(Box<IdentMacroExpander + Sync + Send>, Option<Span>, bool)
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A function-like syntax extension that has an extra ident before the block.
ProcMacroDerive(Box<MultiItemModifier + Sync + Send>, Vec<Symbol>, Edition)
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An attribute-like procedural macro. TokenStream -> TokenStream. The input is the annotated item. Allows generating code to implement a Trait for a given struct or enum item.
BuiltinDerive(BuiltinDeriveFn)
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An attribute-like procedural macro that derives a builtin trait.
DeclMacro
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A declarative macro, e.g. macro m() {}
.
Fields of DeclMacro
expander: Box<TTMacroExpander + Sync + Send> | 🔬 This is a nightly-only experimental API. ( |
def_info: Option<(NodeId, Span)> | 🔬 This is a nightly-only experimental API. ( |
is_transparent: bool | 🔬 This is a nightly-only experimental API. ( |
edition: Edition | 🔬 This is a nightly-only experimental API. ( |
Methods
impl SyntaxExtension
[src]
impl SyntaxExtension
pub fn kind(&self) -> MacroKind
[src]
pub fn kind(&self) -> MacroKind
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Return which kind of macro calls this syntax extension.
pub fn default_transparency(&self) -> Transparency
[src]
pub fn default_transparency(&self) -> Transparency
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pub fn edition(&self) -> Edition
[src]
pub fn edition(&self) -> Edition
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Auto Trait Implementations
impl !Send for SyntaxExtension
impl !Send for SyntaxExtension
impl !Sync for SyntaxExtension
impl !Sync for SyntaxExtension
Blanket Implementations
impl<T> From for T
[src]
impl<T> From for T
impl<T, U> Into for T where
U: From<T>,
[src]
impl<T, U> Into for T where
U: From<T>,
impl<T, U> TryFrom for T where
T: From<U>,
[src]
impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
try_from
)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized,
[src]
impl<T> Borrow for T where
T: ?Sized,
ⓘImportant traits for &'a mut Rfn borrow(&self) -> &T
[src]
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>,
[src]
impl<T, U> TryInto for T where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
[src]
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
try_from
)Performs the conversion.
impl<T> BorrowMut for T where
T: ?Sized,
[src]
impl<T> BorrowMut for T where
T: ?Sized,
ⓘImportant traits for &'a mut Rfn borrow_mut(&mut self) -> &mut T
[src]
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Any for T where
T: 'static + ?Sized,
[src]
impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&self) -> TypeId
[src]
fn get_type_id(&self) -> TypeId
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)
this method will likely be replaced by an associated static
Gets the TypeId
of self
. Read more
impl<E> SpecializationError for E
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impl<E> SpecializationError for E
fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized,
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fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized,
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Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S
is the encoder/decoder state type, T
is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more
impl<T> Erased for T
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impl<T> Erased for T
impl<T> Send for T where
T: ?Sized,
[src]
impl<T> Send for T where
T: ?Sized,
impl<T> Sync for T where
T: ?Sized,
[src]
impl<T> Sync for T where
T: ?Sized,
impl<T> Erased for T
impl<T> Erased for T