X-Git-Url: https://git.hcoop.net/hcoop/domtool2.git/blobdiff_plain/a22c187b7b983dad6b0e2c34cd0ab74e95c2411b..234b917a6149413bbbeab7dccfaeab5f16e43fe1:/src/domtool.grm

diff --git a/src/domtool.grm b/src/domtool.grm
index 3384492..4b8405f 100644
--- a/src/domtool.grm
+++ b/src/domtool.grm
@@ -17,6 +17,7 @@
 *)
 
 (* Parser for Domtool configuration files *)
+
 open Ast
 
 %%
@@ -25,15 +26,22 @@ open Ast
 %term 
    EOF
  | SYMBOL of string | CSYMBOL of string
- | STRING of string
+ | STRING of string | DOC of string
  | INT of int
- | ARROW | DARROW | COLON | CARET | BANG | AND
+ | 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
 
 %nonterm 
-   file of exp
+   file of file
+ | decls of decl list
+ | decl of decl
+ | decl' of decl'
+ | docOpt of string option
+ | expOpt of exp option
  | exp of exp
  | apps of exp
  | term of exp
@@ -41,7 +49,7 @@ open Ast
  | elistNe of exp list
  | clist of exp list
  | typ of typ
- | ctxt of context
+ | ctxt of pred
  | recd of record
  | recdNe of record
 
@@ -65,10 +73,27 @@ open Ast
 
 %%
 
-file   : exp                               (exp)
+file   : decls expOpt                      (decls, expOpt)
+
+decls  :                                   ([])
+       | decl SEMI decls                   (decl :: decls)
+
+decl   : decl' docOpt                      (decl', docOpt, (decl'left, docOptright))
+
+decl'  : EXTERN TYPE SYMBOL                (DExternType SYMBOL)
+       | EXTERN VAL SYMBOL COLON typ       (DExternVal (SYMBOL, typ))
+
+docOpt :                                   (NONE)
+       | DOC                               (SOME DOC)
+
+expOpt :                                   (NONE)
+       | exp                               (SOME (ELocal exp, (expleft, expright)))
+
 
 exp    : apps                              (apps)
-       | BSLASH SYMBOL COLON LPAREN typ RPAREN ARROW exp (ELam (SYMBOL, typ, exp), (BSLASHleft, expright))
+       | 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))
        | CSYMBOL EQ exp                    (ESet (CSYMBOL, exp), (CSYMBOLleft, expright))
        | exp SEMI exp                      (let
 						val ls = case #1 exp2 of
@@ -77,6 +102,9 @@ exp    : apps                              (apps)
 					    in
 						(ESeq ls, (exp1left, exp2right))
 					    end)
+       | SYMBOL LARROW CSYMBOL SEMI exp    (EGet (SYMBOL, CSYMBOL, exp), (SYMBOLleft, expright))
+       | apps WITH END                     (EWith (apps, (ESkip, (WITHleft, ENDright))), (appsleft, ENDright))
+       | apps WITH exp END                 (EWith (apps, exp), (appsleft, ENDright))
 
 apps   : term                              (term)
        | apps term                         (EApp (apps, term), (appsleft, termright))
@@ -85,18 +113,9 @@ term   : LPAREN exp RPAREN                 (exp)
        | INT                               (EInt INT, (INTleft, INTright))
        | STRING                            (EString STRING, (STRINGleft, STRINGright))
        | LBRACK elist RBRACK               (EList elist, (LBRACKleft, RBRACKright))
-       | LET exp IN exp END                (let
-						val ls = case (#1 exp1, #1 exp2) of
-							     (ESeq ls1, ESeq ls2) => ls1 @ ls2
-							   | (ESeq ls, _) => ls @ [exp2]
-							   | (_, ESeq ls) => exp1 :: ls
-							   | _ => [exp1, exp2]
-					    in
-						(ELocal (ESeq ls, (exp1left, exp2right)),
-						 (exp1left, exp2right))
-					    end)
+       | LET exp IN exp END                (ELocal (ESeq [exp1, exp2], (LETleft, ENDright)),
+						    (LETleft, ENDright))
        | SYMBOL                            (EVar SYMBOL, (SYMBOLleft, SYMBOLright))
-       | CSYMBOL                           (EEnv CSYMBOL, (CSYMBOLleft, CSYMBOLright))
 
 elist  :                                   ([])
        | elistNe                           (elistNe)
@@ -107,12 +126,13 @@ elistNe: exp                               ([exp])
 typ    : SYMBOL                            (TBase SYMBOL, (SYMBOLleft, SYMBOLright))
        | LBRACK typ RBRACK                 (TList typ, (LBRACKleft, RBRACKright))
        | typ ARROW typ                     (TArrow (typ1, typ2), (typleft, typright))
-       | LBRACK ctxt RBRACK recd DARROW recd (TAction (ctxt, recd1, recd2), (ctxtleft, recd2right))
+       | LBRACK ctxt RBRACK recd DARROW recd (TAction (ctxt, recd1, recd2), (LBRACKleft, recd2right))
        | LBRACK ctxt RBRACK recd           (TAction (ctxt, recd, StringMap.empty),
-					    (ctxtleft, recdright))
+					    (LBRACKleft, recdright))
        | LBRACK ctxt RBRACK                (TAction (ctxt, StringMap.empty, StringMap.empty),
-					    (ctxtleft, ctxtright))
+					    (LBRACKleft, ctxtright))
        | LPAREN typ RPAREN                 (typ)
+       | ctxt DARROW ctxt                  (TNested (ctxt1, ctxt2), (ctxt1left, ctxt2right))
 
 recd   : LBRACE RBRACE                     (StringMap.empty)
        | LBRACE recdNe RBRACE              (recdNe)