| ARROW | DARROW | LARROW
| COLON | CARET | BANG | AND
| LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
- | EQ | COMMA | BSLASH | SEMI | LET | IN | END
- | ROOT
- | EXTERN | TYPE | VAL | WITH | WHERE
+ | EQ | COMMA | BSLASH | BSLASHBSLASH | SEMI | LET | IN | BEGIN | END
+ | IF | THEN | ELSE
+ | ROOT | SKIP
+ | EXTERN | TYPE | VAL | ENV | WITH | WHERE | CONTEXT
%nonterm
file of file
| ctxt of pred
| recd of record
| recdNe of record
+ | SEMIopt of unit
%verbose (* print summary of errors *)
%pos int (* positions *)
%name Domtool
+%nonassoc THEN ELSE
%right SEMI
%nonassoc COLON
%nonassoc IN
%%
-file : decls expOpt (decls, expOpt)
+file : docOpt decls expOpt (docOpt, decls, expOpt)
decls : ([])
- | decl SEMI decls (decl :: decls)
+ | decl decls (decl :: decls)
-decl : decl' docOpt (decl', docOpt, (decl'left, docOptright))
+decl : decl' SEMI docOpt (decl', docOpt, (decl'left, docOptright))
decl' : EXTERN TYPE SYMBOL (DExternType SYMBOL)
| EXTERN VAL SYMBOL COLON typ (DExternVal (SYMBOL, typ))
+ | VAL SYMBOL EQ exp (DVal (SYMBOL, NONE, exp))
+ | VAL SYMBOL COLON typ EQ exp (DVal (SYMBOL, SOME typ, exp))
+ | ENV CSYMBOL EQ exp (DEnv (CSYMBOL, NONE, exp))
+ | ENV CSYMBOL COLON typ EQ exp (DEnv (CSYMBOL, SOME typ, exp))
+ | CONTEXT CSYMBOL (DContext CSYMBOL)
docOpt : (NONE)
| DOC (SOME DOC)
expOpt : (NONE)
- | exp (SOME (ELocal (exp, (ESkip, (expleft, expright))),
- (expleft, expright)))
+ | exp (SOME exp)
exp : apps (apps)
| BSLASH SYMBOL COLON LPAREN typ RPAREN ARROW exp (ELam (SYMBOL, SOME typ, exp),
(BSLASHleft, expright))
| BSLASH SYMBOL ARROW exp (ELam (SYMBOL, NONE, exp), (BSLASHleft, expright))
+ | BSLASHBSLASH SYMBOL COLON ctxt ARROW exp (EALam (SYMBOL, ctxt, exp),
+ (BSLASHBSLASHleft, expright))
| CSYMBOL EQ exp (ESet (CSYMBOL, exp), (CSYMBOLleft, expright))
| exp SEMI exp (let
val ls = case #1 exp2 of
in
(ESeq ls, (exp1left, exp2right))
end)
- | SYMBOL LARROW CSYMBOL SEMI exp (EGet (SYMBOL, CSYMBOL, exp), (SYMBOLleft, expright))
- (*| exp WHERE exp END (ELocal (exp1, exp2), (exp1left, ENDright))
- | exp WHERE exp WITH END (EWith ((ELocal (exp1, exp2), (exp1left, ENDright)),
- (ESkip, (WITHleft, ENDright))),
- (exp1left, ENDright))
- | exp WITH END (EWith (exp, (ESkip, (WITHleft, ENDright))), (expleft, ENDright))
- | exp WITH exp END (EWith (exp1, exp2), (exp1left, ENDright))*)
+ | exp SEMI (exp)
+ | SYMBOL LARROW CSYMBOL SEMI exp (EGet (SYMBOL, NONE, CSYMBOL, exp), (SYMBOLleft, expright))
+ | SYMBOL COLON typ LARROW CSYMBOL SEMI exp (EGet (SYMBOL, SOME typ, CSYMBOL, exp), (SYMBOLleft, expright))
+ | IF exp THEN exp ELSE exp END (EIf (exp1, exp2, exp3), (IFleft, ENDright))
apps : term (term)
| apps term (EApp (apps, term), (appsleft, termright))
term : LPAREN exp RPAREN (exp)
+ | BEGIN exp END (exp)
| INT (EInt INT, (INTleft, INTright))
| STRING (EString STRING, (STRINGleft, STRINGright))
| LBRACK elist RBRACK (EList elist, (LBRACKleft, RBRACKright))
| LET exp IN exp END (ELocal (exp1, exp2), (LETleft, ENDright))
| SYMBOL (EVar SYMBOL, (SYMBOLleft, SYMBOLright))
+ | SKIP (ESkip, (SKIPleft, SKIPright))
-sets : CSYMBOL EQ apps ([(ESet (CSYMBOL, apps), (CSYMBOLleft, appsright))])
+sets : CSYMBOL EQ apps SEMIopt ([(ESet (CSYMBOL, apps), (CSYMBOLleft, appsright))])
| CSYMBOL EQ apps SEMI sets ((ESet (CSYMBOL, apps), (CSYMBOLleft, appsright))
:: sets)
+SEMIopt: SEMI ()
+ | ()
+
elist : ([])
| elistNe (elistNe)