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entrypoints Grammars;
Grammars. Grammars ::= [Grammar];
Grammar. Grammar ::= "grammar" Ident [Flag] [Rule] "end" "grammar";
separator Grammar "";
StartCat. Flag ::= "startcat" Category;
terminator Flag ";";
Rule. Rule ::= Fun ":" Profiles "." Category "->" [Symbol];
terminator Rule ";";
Cons. Fun ::= Ident ;
Coerce. Fun ::= "_" ;
Profiles. Profiles ::= "[" [Profile] "]";
separator Profile ",";
UnifyProfile. Profile ::= "[" [Integer] "]";
ConstProfile. Profile ::= Ident ;
separator Integer ",";
CatS. Symbol ::= Category;
TermS. Symbol ::= String;
-- separator Symbol "";
[]. [Symbol] ::= "." ;
(:[]). [Symbol] ::= Symbol ;
(:). [Symbol] ::= Symbol [Symbol] ;
Category. Category ::= SingleQuoteString ;
token SingleQuoteString '\'' ((char - ["'\\"]) | ('\\' ["'\\"]))* '\'' ;
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