rustc_expand::expand

Enum AstFragment

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pub enum AstFragment {

Show 18 variants    OptExpr(Option<P<Expr>>),
    MethodReceiverExpr(P<Expr>),
    Expr(P<Expr>),
    Pat(P<Pat>),
    Ty(P<Ty>),
    Stmts(SmallVec<[Stmt; 1]>),
    Items(SmallVec<[P<Item>; 1]>),
    TraitItems(SmallVec<[P<AssocItem>; 1]>),
    ImplItems(SmallVec<[P<AssocItem>; 1]>),
    ForeignItems(SmallVec<[P<ForeignItem>; 1]>),
    Arms(SmallVec<[Arm; 1]>),
    ExprFields(SmallVec<[ExprField; 1]>),
    PatFields(SmallVec<[PatField; 1]>),
    GenericParams(SmallVec<[GenericParam; 1]>),
    Params(SmallVec<[Param; 1]>),
    FieldDefs(SmallVec<[FieldDef; 1]>),
    Variants(SmallVec<[Variant; 1]>),
    Crate(Crate),

}
Expand description

A fragment of AST that can be produced by a single macro expansion. Can also serve as an input and intermediate result for macro expansion operations.

Variants§

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OptExpr(Option<P<Expr>>)

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MethodReceiverExpr(P<Expr>)

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Expr(P<Expr>)

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Pat(P<Pat>)

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Ty(P<Ty>)

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Stmts(SmallVec<[Stmt; 1]>)

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Items(SmallVec<[P<Item>; 1]>)

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TraitItems(SmallVec<[P<AssocItem>; 1]>)

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ImplItems(SmallVec<[P<AssocItem>; 1]>)

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ForeignItems(SmallVec<[P<ForeignItem>; 1]>)

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Arms(SmallVec<[Arm; 1]>)

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ExprFields(SmallVec<[ExprField; 1]>)

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PatFields(SmallVec<[PatField; 1]>)

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GenericParams(SmallVec<[GenericParam; 1]>)

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Params(SmallVec<[Param; 1]>)

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FieldDefs(SmallVec<[FieldDef; 1]>)

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Variants(SmallVec<[Variant; 1]>)

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Crate(Crate)

Implementations§

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impl AstFragment

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fn add_placeholders(&mut self, placeholders: &[NodeId])

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pub(crate) fn make_opt_expr(self) -> Option<P<Expr>>

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pub(crate) fn make_method_receiver_expr(self) -> P<Expr>

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pub fn make_expr(self) -> P<Expr>

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pub fn make_pat(self) -> P<Pat>

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pub fn make_ty(self) -> P<Ty>

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pub fn make_stmts(self) -> SmallVec<[Stmt; 1]>

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pub fn make_items(self) -> SmallVec<[P<Item>; 1]>

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pub fn make_trait_items(self) -> SmallVec<[P<AssocItem>; 1]>

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pub fn make_impl_items(self) -> SmallVec<[P<AssocItem>; 1]>

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pub fn make_foreign_items(self) -> SmallVec<[P<ForeignItem>; 1]>

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pub fn make_arms(self) -> SmallVec<[Arm; 1]>

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pub fn make_expr_fields(self) -> SmallVec<[ExprField; 1]>

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pub fn make_pat_fields(self) -> SmallVec<[PatField; 1]>

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pub fn make_generic_params(self) -> SmallVec<[GenericParam; 1]>

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pub fn make_params(self) -> SmallVec<[Param; 1]>

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pub fn make_field_defs(self) -> SmallVec<[FieldDef; 1]>

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pub fn make_variants(self) -> SmallVec<[Variant; 1]>

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pub fn make_crate(self) -> Crate

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fn make_ast<T: InvocationCollectorNode>(self) -> T::OutputTy

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pub(crate) fn mut_visit_with<F: MutVisitor>(&mut self, vis: &mut F)

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pub fn visit_with<'a, V: Visitor<'a>>(&'a self, visitor: &mut V) -> V::Result

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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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fn with_current_subscriber(self) -> WithDispatch<Self>

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: 120 bytes

Size for each variant:

  • OptExpr: 8 bytes
  • MethodReceiverExpr: 8 bytes
  • Expr: 8 bytes
  • Pat: 8 bytes
  • Ty: 8 bytes
  • Stmts: 40 bytes
  • Items: 24 bytes
  • TraitItems: 24 bytes
  • ImplItems: 24 bytes
  • ForeignItems: 24 bytes
  • Arms: 56 bytes
  • ExprFields: 56 bytes
  • PatFields: 56 bytes
  • GenericParams: 104 bytes
  • Params: 48 bytes
  • FieldDefs: 88 bytes
  • Variants: 112 bytes
  • Crate: 40 bytes