src/domtool.grm

   1 (* HCoop Domtool (http://hcoop.sourceforge.net/)
   2  * Copyright (c) 2006, Adam Chlipala
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17 *)
  18
  19 (* Parser for Domtool configuration files *)
  20
  21 open Ast
  22
  23 %%
  24 %header (functor DomtoolLrValsFn(structure Token : TOKEN))
  25
  26 %term
  27    EOF
  28  | SYMBOL of string | CSYMBOL of string
  29  | STRING of string | DOC of string
  30  | INT of int
  31  | ARROW | DARROW | LARROW
  32  | COLON | CARET | BANG | AND
  33  | LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
  34  | EQ | COMMA | BSLASH | SEMI | LET | IN | END
  35  | ROOT
  36  | EXTERN | TYPE | VAL | WITH
  37
  38 %nonterm
  39    file of file
  40  | decls of decl list
  41  | decl of decl
  42  | decl' of decl'
  43  | docOpt of string option
  44  | expOpt of exp option
  45  | exp of exp
  46  | apps of exp
  47  | term of exp
  48  | elist of exp list
  49  | elistNe of exp list
  50  | clist of exp list
  51  | typ of typ
  52  | ctxt of pred
  53  | recd of record
  54  | recdNe of record
  55
  56 %verbose                                (* print summary of errors *)
  57 %pos int                                (* positions *)
  58 %start file
  59 %pure
  60 %eop EOF
  61 %noshift EOF
  62
  63 %name Domtool
  64
  65 %right SEMI
  66 %nonassoc COLON
  67 %nonassoc IN
  68 %right ARROW DARROW
  69 %right COMMA
  70 %nonassoc EQ
  71 %right AND
  72 %nonassoc CARET BANG
  73
  74 %%
  75
  76 file   : decls expOpt                      (decls, expOpt)
  77
  78 decls  :                                   ([])
  79        | decl SEMI decls                   (decl :: decls)
  80
  81 decl   : decl' docOpt                      (decl', docOpt, (decl'left, docOptright))
  82
  83 decl'  : EXTERN TYPE SYMBOL                (DExternType SYMBOL)
  84        | EXTERN VAL SYMBOL COLON typ       (DExternVal (SYMBOL, typ))
  85
  86 docOpt :                                   (NONE)
  87        | DOC                               (SOME DOC)
  88
  89 expOpt :                                   (NONE)
  90        | exp                               (SOME (ELocal exp, (expleft, expright)))
  91
  92
  93 exp    : apps                              (apps)
  94        | BSLASH SYMBOL COLON LPAREN typ RPAREN ARROW exp (ELam (SYMBOL, SOME typ, exp),
  95                                                           (BSLASHleft, expright))
  96        | BSLASH SYMBOL ARROW exp           (ELam (SYMBOL, NONE, exp), (BSLASHleft, expright))
  97        | CSYMBOL EQ exp                    (ESet (CSYMBOL, exp), (CSYMBOLleft, expright))
  98        | exp SEMI exp                      (let
  99                                                 val ls = case #1 exp2 of
 100                                                              ESeq ls => exp :: ls
 101                                                            | _ => [exp1, exp2]
 102                                             in
 103                                                 (ESeq ls, (exp1left, exp2right))
 104                                             end)
 105        | SYMBOL LARROW CSYMBOL SEMI exp    (EGet (SYMBOL, CSYMBOL, exp), (SYMBOLleft, expright))
 106        | apps WITH END                     (EWith (apps, (ESkip, (WITHleft, ENDright))), (appsleft, ENDright))
 107        | apps WITH exp END                 (EWith (apps, exp), (appsleft, ENDright))
 108
 109 apps   : term                              (term)
 110        | apps term                         (EApp (apps, term), (appsleft, termright))
 111
 112 term   : LPAREN exp RPAREN                 (exp)
 113        | INT                               (EInt INT, (INTleft, INTright))
 114        | STRING                            (EString STRING, (STRINGleft, STRINGright))
 115        | LBRACK elist RBRACK               (EList elist, (LBRACKleft, RBRACKright))
 116        | LET exp IN exp END                (ELocal (ESeq [exp1, exp2], (LETleft, ENDright)),
 117                                                     (LETleft, ENDright))
 118        | SYMBOL                            (EVar SYMBOL, (SYMBOLleft, SYMBOLright))
 119
 120 elist  :                                   ([])
 121        | elistNe                           (elistNe)
 122
 123 elistNe: exp                               ([exp])
 124        | exp COMMA elistNe                 (exp :: elistNe)
 125
 126 typ    : SYMBOL                            (TBase SYMBOL, (SYMBOLleft, SYMBOLright))
 127        | LBRACK typ RBRACK                 (TList typ, (LBRACKleft, RBRACKright))
 128        | typ ARROW typ                     (TArrow (typ1, typ2), (typleft, typright))
 129        | LBRACK ctxt RBRACK recd DARROW recd (TAction (ctxt, recd1, recd2), (LBRACKleft, recd2right))
 130        | LBRACK ctxt RBRACK recd           (TAction (ctxt, recd, StringMap.empty),
 131                                             (LBRACKleft, recdright))
 132        | LBRACK ctxt RBRACK                (TAction (ctxt, StringMap.empty, StringMap.empty),
 133                                             (LBRACKleft, ctxtright))
 134        | LPAREN typ RPAREN                 (typ)
 135        | ctxt DARROW ctxt                  (TNested (ctxt1, ctxt2), (ctxt1left, ctxt2right))
 136
 137 recd   : LBRACE RBRACE                     (StringMap.empty)
 138        | LBRACE recdNe RBRACE              (recdNe)
 139
 140 recdNe : CSYMBOL COLON typ                 (StringMap.insert (StringMap.empty, CSYMBOL, typ))
 141        | CSYMBOL COLON typ COMMA recdNe    (StringMap.insert (recdNe, CSYMBOL, typ))
 142
 143 ctxt   : ROOT                              (CRoot, (ROOTleft, ROOTright))
 144        | CSYMBOL                           (CConst CSYMBOL, (CSYMBOLleft, CSYMBOLright))
 145        | CARET ctxt                        (CPrefix ctxt, (CARETleft, ctxtright))
 146        | BANG ctxt                         (CNot ctxt, (BANGleft, ctxtright))
 147        | ctxt AND ctxt                     (CAnd (ctxt1, ctxt2), (ctxt1left, ctxt2right))
 148        | LPAREN ctxt RPAREN                (ctxt)