entrypoints Grammars;

Grammars. Grammars ::= [Grammar];

Grammar. Grammar ::= "grammar" Ident [Flag] [Rule] "end" "grammar";
separator Grammar "";

StartCat. Flag ::= "startcat" Category;
terminator Flag ";";

Rule. Rule ::= Ident ":" Name Profile "." Category "->" [Symbol];
terminator Rule ";";

Profile. Profile ::= "[" [Ints] "]";

Ints. Ints ::= "[" [Integer] "]";
separator Ints ",";
separator Integer ",";

CatS. Symbol ::= Category;
TermS. Symbol ::= String;

separator Symbol "";

Name. Name ::= [IdentParam] Category;
terminator IdentParam "/";

Category. Category ::= IdentParam "." Ident [Param] ;

IdentParam. IdentParam ::= Ident "{" [Param] "}" ;

Param. Param ::= "!" Ident ;
separator Param "";