Enum ModChainV1 

pub enum ModChainV1 {
    Long(LongUpperTok),
    Single(CtorTok),
}

mod_chain: UPPER | LONG_UPPER (parser_v1.mly:404-414). M.N.P arrives as ONE LongUpperTok (the V0_1 lexer branch), so a chain is always exactly one token — which is what makes ModExpr::App’s two- chain juxtaposition (F X, F.G X.Y) unambiguous at the token level. Token-disjoint arms; order is cosmetic.

Variants

Long(LongUpperTok)

Single(CtorTok)

Implementations

impl ModChainV1

pub fn render(&self) -> String

The dotted path as source text, e.g. Stdlib.Logo or Local.

pub fn head_name(&self) -> String

The HEAD component — the module/envelope identifier the loader keys dependency resolution off (upstream’s used_as map is keyed by it; the tail is submodule access, a typecheck-time concern). For A.B.C that is A; for a bare A it is A.

Trait Implementations

impl Clone for ModChainV1

fn clone(&self) -> ModChainV1

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ModChainV1

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

Formats the value using the given formatter.

impl<__SyanMacro_Atom> Parse<__SyanMacro_Atom> for ModChainV1

where __SyanMacro_Atom: Spanned + Clone, LongUpperTok: Parse<__SyanMacro_Atom>, CtorTok: 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 ModChainV1

fn eq(&self, other: &ModChainV1) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ModChainV1

impl<__SyanMacro_Atom> Unparse<__SyanMacro_Atom> for ModChainV1

where LongUpperTok: Unparse<__SyanMacro_Atom>, CtorTok: Unparse<__SyanMacro_Atom>,

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