pub enum VariantData<'hir> {
    Struct(&'hir [FieldDef<'hir>], 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(&'hir [FieldDef<'hir>], 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> 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)

Auto Trait Implementations§

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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> Any for Twhere 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 Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

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, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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