rustc_expand::base

Struct MacEager

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pub struct MacEager {
    pub expr: Option<P<Expr>>,
    pub pat: Option<P<Pat>>,
    pub items: Option<SmallVec<[P<Item>; 1]>>,
    pub impl_items: Option<SmallVec<[P<AssocItem>; 1]>>,
    pub trait_items: Option<SmallVec<[P<AssocItem>; 1]>>,
    pub foreign_items: Option<SmallVec<[P<ForeignItem>; 1]>>,
    pub stmts: Option<SmallVec<[Stmt; 1]>>,
    pub ty: Option<P<Ty>>,
}
Expand description

MacResult implementation for the common case where you’ve already built each form of AST that you might return.

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§expr: Option<P<Expr>>§pat: Option<P<Pat>>§items: Option<SmallVec<[P<Item>; 1]>>§impl_items: Option<SmallVec<[P<AssocItem>; 1]>>§trait_items: Option<SmallVec<[P<AssocItem>; 1]>>§foreign_items: Option<SmallVec<[P<ForeignItem>; 1]>>§stmts: Option<SmallVec<[Stmt; 1]>>§ty: Option<P<Ty>>

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impl MacEager

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pub fn expr(v: P<Expr>) -> Box<dyn MacResult>

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pub fn pat(v: P<Pat>) -> Box<dyn MacResult>

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pub fn items(v: SmallVec<[P<Item>; 1]>) -> Box<dyn MacResult>

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pub fn impl_items(v: SmallVec<[P<AssocItem>; 1]>) -> Box<dyn MacResult>

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pub fn trait_items(v: SmallVec<[P<AssocItem>; 1]>) -> Box<dyn MacResult>

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pub fn foreign_items(v: SmallVec<[P<ForeignItem>; 1]>) -> Box<dyn MacResult>

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pub fn stmts(v: SmallVec<[Stmt; 1]>) -> Box<dyn MacResult>

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pub fn ty(v: P<Ty>) -> Box<dyn MacResult>

Trait Implementations§

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impl Default for MacEager

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fn default() -> MacEager

Returns the “default value” for a type. Read more
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impl MacResult for MacEager

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fn make_expr(self: Box<Self>) -> Option<P<Expr>>

Creates an expression.
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fn make_items(self: Box<Self>) -> Option<SmallVec<[P<Item>; 1]>>

Creates zero or more items.
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fn make_impl_items(self: Box<Self>) -> Option<SmallVec<[P<AssocItem>; 1]>>

Creates zero or more impl items.
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fn make_trait_items(self: Box<Self>) -> Option<SmallVec<[P<AssocItem>; 1]>>

Creates zero or more trait items.
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fn make_foreign_items(self: Box<Self>) -> Option<SmallVec<[P<ForeignItem>; 1]>>

Creates zero or more items in an extern {} block
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fn make_stmts(self: Box<Self>) -> Option<SmallVec<[Stmt; 1]>>

Creates zero or more statements. Read more
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fn make_pat(self: Box<Self>) -> Option<P<Pat>>

Creates a pattern.
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fn make_ty(self: Box<Self>) -> Option<P<Ty>>

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fn make_arms(self: Box<Self>) -> Option<SmallVec<[Arm; 1]>>

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fn make_expr_fields(self: Box<Self>) -> Option<SmallVec<[ExprField; 1]>>

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fn make_pat_fields(self: Box<Self>) -> Option<SmallVec<[PatField; 1]>>

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fn make_generic_params(self: Box<Self>) -> Option<SmallVec<[GenericParam; 1]>>

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fn make_params(self: Box<Self>) -> Option<SmallVec<[Param; 1]>>

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fn make_field_defs(self: Box<Self>) -> Option<SmallVec<[FieldDef; 1]>>

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fn make_variants(self: Box<Self>) -> Option<SmallVec<[Variant; 1]>>

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fn make_crate(self: Box<Self>) -> Option<Crate>

Auto Trait Implementations§

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: 200 bytes