Enum VariantData

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

Fields and constructor IDs of enum variants and structs.

Variants

Struct

A struct variant.

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

Fields

fields: &'hir [FieldDef<'hir>]

recovered: Recovered

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

A tuple variant.

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

Unit(HirId, LocalDefId)

A unit variant.

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

Implementations

impl<'hir> VariantData<'hir>

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

Return the fields of this variant.

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

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

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

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

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

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

Trait Implementations

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

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

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'hir> Debug for VariantData<'hir>

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

Formats the value using the given formatter.

impl<'hir, __CTX> HashStable<__CTX> for VariantData<'hir>

where __CTX: HashStableContext,

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

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

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