51 lines
1.2 KiB
CFEngine3
51 lines
1.2 KiB
CFEngine3
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Program. Program ::= [Def] ;
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DBind. Def ::= Bind ;
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DData. Def ::= Data ;
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separator Def ";" ;
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Bind. Bind ::= Ident ":" Type ";"
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Ident [Ident] "=" Exp ;
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Data. Data ::= "data" Constr "where" "{" [Constructor] "}" ;
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Constructor. Constructor ::= Ident ":" Type ;
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separator nonempty Constructor "" ;
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TMono. Type1 ::= Ident ;
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TPol. Type1 ::= "'" Ident ;
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TConstr. Type1 ::= Constr ;
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TArr. Type ::= Type1 "->" Type ;
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Constr. Constr ::= Ident "(" [Type] ")" ;
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-- TODO: Move literal to its own thing since it's reused in Init as well.
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EAnn. Exp5 ::= "(" Exp ":" Type ")" ;
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EId. Exp4 ::= Ident ;
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ELit. Exp4 ::= Literal ;
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EApp. Exp3 ::= Exp3 Exp4 ;
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EAdd. Exp1 ::= Exp1 "+" Exp2 ;
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ESub. Exp1 ::= Exp1 "-" Exp2 ;
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ELet. Exp ::= "let" Ident "=" Exp "in" Exp ;
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EAbs. Exp ::= "\\" Ident "." Exp ;
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ECase. Exp ::= "case" Exp "of" "{" [Inj] "}";
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LInt. Literal ::= Integer ;
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Inj. Inj ::= Init "=>" Exp ;
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separator nonempty Inj ";" ;
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InitLit. Init ::= Literal ;
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InitConstr. Init ::= Ident [Ident] ;
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InitCatch. Init ::= "_" ;
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separator Type " " ;
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coercions Type 2 ;
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separator Ident " ";
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coercions Exp 5 ;
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comment "--" ;
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comment "{-" "-}" ;
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