Enum syntax::ast::VariantData

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

Fields and Ids of enum variants and structs

For enum variants: NodeId represents both an Id of the variant itself (relevant for all variant kinds) and an Id of the variant's constructor (not relevant for Struct-variants). One shared Id can be successfully used for these two purposes. Id of the whole enum lives in Item.

For structs: NodeId represents an Id of the structure's constructor, so it is not actually used for Struct-structs (but still presents). Structures don't have an analogue of "Id of the variant itself" from enum variants. Id of the whole struct lives in Item.

Variants

Struct(Vec<StructField>, NodeId)

Struct variant.

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

Tuple(Vec<StructField>, NodeId)

Tuple variant.

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

Unit(NodeId)

Unit variant.

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

Methods

impl VariantData

Important traits for &'_ [u8]

impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]

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

pub fn id(&self) -> NodeId

pub fn is_struct(&self) -> bool

pub fn is_tuple(&self) -> bool

pub fn is_unit(&self) -> bool

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 Encodable for VariantData

fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>

impl Decodable for VariantData

fn decode<__D: Decoder>(d: &mut __D) -> Result<VariantData, __D::Error>