pub enum VariantData<'hir> {
    Struct {
        fields: &'hir [FieldDef<'hir>],
        recovered: bool,
    },
    Tuple(&'hir [FieldDef<'hir>], HirId, LocalDefId),
    Unit(HirId, LocalDefId),
}
Expand description

Fields and constructor IDs of enum variants and structs.

Variants§

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Struct

Fields

§fields: &'hir [FieldDef<'hir>]
§recovered: bool

A struct variant.

E.g., Bar { .. } as in enum Foo { Bar { .. } }.

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Tuple(&'hir [FieldDef<'hir>], HirId, LocalDefId)

A tuple variant.

E.g., Bar(..) as in enum Foo { Bar(..) }.

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Unit(HirId, LocalDefId)

A unit variant.

E.g., Bar = .. as in enum Foo { Bar = .. }.

Implementations§

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impl<'hir> VariantData<'hir>

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pub fn fields(&self) -> &'hir [FieldDef<'hir>]

Return the fields of this variant.

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pub fn ctor(&self) -> Option<(CtorKind, HirId, LocalDefId)>

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pub fn ctor_kind(&self) -> Option<CtorKind>

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pub fn ctor_hir_id(&self) -> Option<HirId>

Return the HirId of this variant’s constructor, if it has one.

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pub fn ctor_def_id(&self) -> Option<LocalDefId>

Return the LocalDefId of this variant’s constructor, if it has one.

Trait Implementations§

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impl<'hir> Clone for VariantData<'hir>

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fn clone(&self) -> VariantData<'hir>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'hir> Debug for VariantData<'hir>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'hir, __CTX> HashStable<__CTX> for VariantData<'hir>
where __CTX: HashStableContext,

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fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

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impl<'hir> Copy for VariantData<'hir>

Auto Trait Implementations§

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impl<'hir> DynSend for VariantData<'hir>

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impl<'hir> DynSync for VariantData<'hir>

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impl<'hir> RefUnwindSafe for VariantData<'hir>

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impl<'hir> Send for VariantData<'hir>

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impl<'hir> Sync for VariantData<'hir>

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impl<'hir> Unpin for VariantData<'hir>

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impl<'hir> UnwindSafe for VariantData<'hir>

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<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

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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> 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> 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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<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,

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: 32 bytes

Size for each variant:

  • Struct: 23 bytes
  • Tuple: 31 bytes
  • Unit: 15 bytes