Enum rustc_ast::ast::VariantData

pub enum VariantData {
    Struct(Vec<FieldDef>, bool),
    Tuple(Vec<FieldDef>, NodeId),
    Unit(NodeId),
}

Fields and constructor ids of enum variants and structs.

Variants

Struct(Vec<FieldDef>, bool)

Struct variant.

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

Tuple Fields of Struct

0: Vec<FieldDef>1: bool

Tuple(Vec<FieldDef>, NodeId)

Tuple variant.

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

Tuple Fields of Tuple

0: Vec<FieldDef>1: NodeId

Unit(NodeId)

Unit variant.

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

Tuple Fields of Unit

0: NodeId

Implementations

impl VariantData

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

Return the fields of this variant.

pub fn ctor_id(&self) -> Option<NodeId>

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

Trait Implementations

impl Clone for VariantData

fn clone(&self) -> VariantData

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VariantData

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

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for VariantData

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl<__E: Encoder> Encodable<__E> for VariantData

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

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: 31 bytes
• Tuple: 31 bytes
• Unit: 7 bytes