rustc_expand::expand

Struct MacroExpander

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pub struct MacroExpander<'a, 'b> {
    pub cx: &'a mut ExtCtxt<'b>,
    monotonic: bool,
}

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§cx: &'a mut ExtCtxt<'b>§monotonic: bool

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impl<'a, 'b> MacroExpander<'a, 'b>

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pub fn new(cx: &'a mut ExtCtxt<'b>, monotonic: bool) -> Self

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pub fn expand_crate(&mut self, krate: Crate) -> Crate

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pub fn fully_expand_fragment( &mut self, input_fragment: AstFragment, ) -> AstFragment

Recursively expand all macro invocations in this AST fragment.

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fn resolve_imports(&mut self)

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fn collect_invocations( &mut self, fragment: AstFragment, extra_placeholders: &[NodeId], ) -> (AstFragment, Vec<(Invocation, Option<Lrc<SyntaxExtension>>)>)

Collects all macro invocations reachable at this time in this AST fragment, and replace them with “placeholders” - dummy macro invocations with specially crafted NodeIds. Then call into resolver that builds a skeleton (“reduced graph”) of the fragment and prepares data for resolving paths of macro invocations.

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fn error_recursion_limit_reached(&mut self) -> ErrorGuaranteed

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fn error_wrong_fragment_kind( &mut self, kind: AstFragmentKind, mac: &MacCall, span: Span, ) -> ErrorGuaranteed

A macro’s expansion does not fit in this fragment kind. For example, a non-type macro in a type position.

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fn expand_invoc( &mut self, invoc: Invocation, ext: &SyntaxExtensionKind, ) -> ExpandResult<AstFragment, Invocation>

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fn gate_proc_macro_attr_item(&self, span: Span, item: &Annotatable)

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fn gate_proc_macro_input(&self, annotatable: &Annotatable)

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fn parse_ast_fragment( &mut self, toks: TokenStream, kind: AstFragmentKind, path: &Path, span: Span, ) -> AstFragment

Auto Trait Implementations§

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impl<'a, 'b> !DynSend for MacroExpander<'a, 'b>

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impl<'a, 'b> !DynSync for MacroExpander<'a, 'b>

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impl<'a, 'b> Freeze for MacroExpander<'a, 'b>

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impl<'a, 'b> !RefUnwindSafe for MacroExpander<'a, 'b>

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impl<'a, 'b> !Send for MacroExpander<'a, 'b>

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impl<'a, 'b> !Sync for MacroExpander<'a, 'b>

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impl<'a, 'b> Unpin for MacroExpander<'a, 'b>

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impl<'a, 'b> !UnwindSafe for MacroExpander<'a, 'b>

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<T> Filterable for T

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fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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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 more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

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 more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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impl<T> ErasedDestructor for T
where T: 'static,

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: 16 bytes