Enum RecordBody 

pub enum RecordBody {
    Update {
        base: ExprErased,
        with_kw: KwWith,
        fields: Vec<RecordField>,
    },
    Fields(Vec<RecordField>),
}

(| … |)’s content: either a plain field list, or a record update base with l = e; … (nxrecordsynt’s third alternative). Update is tried first (it backtracks cleanly to Fields — parsing base as an expression stops right before a bare label = expr’s =, since = isn’t a valid expression continuation, so the with keyword check fails fast and Fields picks it up). base is nxbot in parser.mly (an atomic expression); routed through ExprErased here instead, which is strictly more permissive (accepts any expression as the base, not just an atomic one) — a deliberate simplification, and also the only way to reference it without adding a second, non-Group recursion edge into Atomic (which — like AppExpr/OpChain — is not itself part of Expr’s SCC, and should stay that way).

Variants

Update

Fields

base: ExprErased

with_kw: KwWith

fields: Vec<RecordField>

Fields(Vec<RecordField>)

Trait Implementations

impl Clone for RecordBody

fn clone(&self) -> RecordBody

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RecordBody

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

Formats the value using the given formatter.

impl<__SyanMacro_Atom> Parse<__SyanMacro_Atom> for RecordBody

where __SyanMacro_Atom: Spanned + Clone, ExprErased: Parse<__SyanMacro_Atom>, KwWith: Parse<__SyanMacro_Atom>, Vec<RecordField>: 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 RecordBody

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RecordBody

impl<__SyanMacro_Atom> Unparse<__SyanMacro_Atom> for RecordBody

where ExprErased: Unparse<__SyanMacro_Atom>, KwWith: Unparse<__SyanMacro_Atom>, Vec<RecordField>: Unparse<__SyanMacro_Atom>,

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