Enum syntax::ast::VariantData

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

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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)

🔬 This is a nightly-only experimental API. (rustc_private)

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Struct variant.

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

Tuple(Vec<StructField>, NodeId)

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Tuple variant.

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

Unit(NodeId)

🔬 This is a nightly-only experimental API. (rustc_private)

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Unit variant.

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

Methods

impl VariantData

Important traits for &'a [u8]

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

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

🔬 This is a nightly-only experimental API. (rustc_private)

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pub fn id(&self) -> NodeId

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pub fn is_struct(&self) -> bool

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pub fn is_tuple(&self) -> bool

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pub fn is_unit(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

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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 Encodable for VariantData

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

🔬 This is a nightly-only experimental API. (rustc_private)

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impl Decodable for VariantData

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

🔬 This is a nightly-only experimental API. (rustc_private)

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impl Debug for VariantData

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

Formats the value using the given formatter.