churf/Grammar.cf

36 lines
872 B
CFEngine3

Program. Program ::= [Bind] ;
Bind. Bind ::= Ident [Ident] "=" Exp ;
EAnn. Exp5 ::= "(" Exp ":" Type ")" ;
EId. Exp4 ::= Ident ;
EConst. Exp4 ::= Const ;
EApp. Exp3 ::= Exp3 Exp4 ;
EAdd. Exp1 ::= Exp1 "+" Exp2 ;
ELet. Exp ::= "let" Ident "=" Exp "in" Exp ;
EAbs. Exp ::= "\\" Ident "." Exp ;
CInt. Const ::= Integer ;
CStr. Const ::= String ;
TMono. Type1 ::= "Mono" Ident ;
TPoly. Type1 ::= "Poly" Ident ;
TArrow. Type ::= Type1 "->" Type ;
-- This doesn't seem to work so we'll have to live with ugly keywords for now
-- token Upper (upper (letter | digit | '_')*) ;
-- token Lower (lower (letter | digit | '_')*) ;
separator Bind ";" ;
separator Ident " ";
coercions Type 1 ;
coercions Exp 5 ;
comment "--" ;
comment "{-" "-}" ;
-- Adt. Adt ::= "data" UIdent "=" [Constructor] ;
-- Sum. Constructor ::= UIdent ;
-- separator Constructor "|" ;