Enum TypeBodyV1 

pub enum TypeBodyV1 {
    Variant {
        leading_bar: Option<BarTok>,
        first: VariantDefV1,
        rest: Vec<BarVariantDefV1>,
    },
    Synonym(TypeExpr),
}

The right-hand side of one type bind: a variant’s constructor list (EXACT_EQ BAR? variants, parser_v1.mly:540-541,545-553) or a transparent synonym (EXACT_EQ typ, :542-543). Variant-first is unambiguous for the same reason as crate::cst::TypeDeclBody (cst.rs:410-418): a variant list is BarTok/CtorTok-headed and no ast::TypeExpr can start with either.

Variants

Variant

Fields

leading_bar: Option<BarTok>

first: VariantDefV1

rest: Vec<BarVariantDefV1>

Synonym(TypeExpr)

Trait Implementations

impl Clone for TypeBodyV1

fn clone(&self) -> TypeBodyV1

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeBodyV1

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

Formats the value using the given formatter.

impl<__SyanMacro_Atom> Parse<__SyanMacro_Atom> for TypeBodyV1

where __SyanMacro_Atom: Spanned + Clone, Option<BarTok>: Parse<__SyanMacro_Atom>, VariantDefV1: Parse<__SyanMacro_Atom>, Vec<BarVariantDefV1>: Parse<__SyanMacro_Atom>, TypeExpr: Parse<__SyanMacro_Atom>,

type Error = ParseError<<__SyanMacro_Atom as Spanned>::Span>

Every error must be convertible to the universal one, so a field’s failure can become the enclosing type’s failure with no per-field where-predicate. Stating it HERE rather than at each derived impl is what keeps it out of the obligation graph: a per-field <FieldTy as Parse<Atom>>::Error: Into<…> predicate re-creates a projection cycle on a recursive field (E0275), which decycle’s bound-peeling does not break.

fn parse_stream<__SyanMacro_S: ParseStream<Atom = __SyanMacro_Atom>>( __syan_stream: &mut __SyanMacro_S, ) -> Result<Self, Self::Error>

Parse from a reborrowable stream.

fn parse(stream: impl IntoParseStream<Atom = Atom>) -> Result<Self, Self::Error>

Parse from anything that can become a stream — String, TokenStream, an existing stream.

fn attempt(self) -> Attempt<Self>

Wrap this value in Attempt, the atomic-parse marker: parsing an Attempt<Self> parses Self but rewinds the stream on failure (it requires Atom: Clone). This is the value constructor; value.attempt() is sugar for Attempt(value).

impl PartialEq for TypeBodyV1

fn eq(&self, other: &TypeBodyV1) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TypeBodyV1

impl<__SyanMacro_Atom> Unparse<__SyanMacro_Atom> for TypeBodyV1

where Option<BarTok>: Unparse<__SyanMacro_Atom>, VariantDefV1: Unparse<__SyanMacro_Atom>, Vec<BarVariantDefV1>: Unparse<__SyanMacro_Atom>, TypeExpr: Unparse<__SyanMacro_Atom>,

fn unparse<__Syan_Emitter: Emitter<__SyanMacro_Atom>>( &self, __syan_sink: &mut __Syan_Emitter, ) -> Result<(), <__Syan_Emitter as Emitter<__SyanMacro_Atom>>::Error>