Enum PatBot 

pub enum PatBot {
    CtorApplied {
        ctor: CtorTok,
        arg: Box<PatBot>,
    },
    Ctor(CtorTok),
    Int(IntTok),
    True(KwTrue),
    False(KwFalse),
    Str(LiteralTok),
    Wild(WildcardTok),
    Var(VarTok),
    Unit {
        paren: UnitParen,
    },
    Paren {
        paren: ParenGroup<()>,
        inner: Box<PatternParenBody>,
    },
    List {
        plist: ListGroup<()>,
        items: Vec<PatListItem>,
    },
}

patbot, plus the constructor-pattern forms pattr adds in parser.mly (folded in here to keep PatCons a plain struct).

Variants

CtorApplied

Ctor patbot — a constructor applied to one argument pattern.

Fields

ctor: CtorTok

arg: Box<PatBot>

Ctor(CtorTok)

A bare (nullary) constructor pattern.

Int(IntTok)

True(KwTrue)

False(KwFalse)

Str(LiteralTok)

Wild(WildcardTok)

Var(VarTok)

Unit

()

Fields

paren: UnitParen

Paren

( pat ) or ( pat, pat, … ) (the latter elaborates to a tuple pattern).

Fields

paren: ParenGroup<()>

inner: Box<PatternParenBody>

List

[ pat; … ] (also matches []).

Fields

plist: ListGroup<()>

items: Vec<PatListItem>

Trait Implementations

impl Clone for PatBot

fn clone(&self) -> PatBot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PatBot

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

Formats the value using the given formatter.

impl<__SyanMacro_Atom> Parse<__SyanMacro_Atom> for PatBot

where __SyanMacro_Atom: Spanned + Clone, CtorTok: Parse<__SyanMacro_Atom>, IntTok: Parse<__SyanMacro_Atom>, KwTrue: Parse<__SyanMacro_Atom>, KwFalse: Parse<__SyanMacro_Atom>, LiteralTok: Parse<__SyanMacro_Atom>, WildcardTok: Parse<__SyanMacro_Atom>, VarTok: Parse<__SyanMacro_Atom>, UnitParen: Parse<__SyanMacro_Atom>, ParenGroup<()>: GroupShape<__SyanMacro_Atom>, ListGroup<()>: GroupShape<__SyanMacro_Atom>, Box<PatternParenBody>: Parse<__SyanMacro_Atom>, Vec<PatListItem>: Parse<__SyanMacro_Atom>, Self: ParseRanked8909385c15d27adc<(((),),), __SyanMacro_Atom>,

type Error = <PatBot as ParseRanked8909385c15d27adc<(((),),), __SyanMacro_Atom>>::Error

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 PatBot

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PatBot

impl<__SyanMacro_Atom> Unparse<__SyanMacro_Atom> for PatBot

where CtorTok: Unparse<__SyanMacro_Atom>, IntTok: Unparse<__SyanMacro_Atom>, KwTrue: Unparse<__SyanMacro_Atom>, KwFalse: Unparse<__SyanMacro_Atom>, LiteralTok: Unparse<__SyanMacro_Atom>, WildcardTok: Unparse<__SyanMacro_Atom>, VarTok: Unparse<__SyanMacro_Atom>, UnitParen: Unparse<__SyanMacro_Atom>, ParenGroup<()>: GroupUnparse<__SyanMacro_Atom>, ListGroup<()>: GroupUnparse<__SyanMacro_Atom>, Box<PatternParenBody>: Unparse<__SyanMacro_Atom>, Vec<PatListItem>: Unparse<__SyanMacro_Atom>, Self: UnparseRanked8909385c15d27adc<(((),),), __SyanMacro_Atom>,

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