Type annotations on environment variable reads
[hcoop/domtool2.git] / src / domtool.grm
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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.
dac62e84 17 *)
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18
19(* Parser for Domtool configuration files *)
63920aa5 20
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21open Ast
22
23%%
24%header (functor DomtoolLrValsFn(structure Token : TOKEN))
25
26%term
27 EOF
28 | SYMBOL of string | CSYMBOL of string
234b917a 29 | STRING of string | DOC of string
42198578 30 | INT of int
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31 | ARROW | DARROW | LARROW
32 | COLON | CARET | BANG | AND
42198578 33 | LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
1dd06e3c 34 | EQ | COMMA | BSLASH | BSLASHBSLASH | SEMI | LET | IN | BEGIN | END
a22c187b 35 | ROOT
095de39e 36 | EXTERN | TYPE | VAL | WITH | WHERE | CONTEXT
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37
38%nonterm
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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
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45 | exp of exp
46 | apps of exp
47 | term of exp
1a4e5a6c 48 | sets of exp list
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49 | elist of exp list
50 | elistNe of exp list
51 | clist of exp list
52 | typ of typ
63920aa5 53 | ctxt of pred
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54 | recd of record
55 | recdNe of record
6fa78209 56 | SEMIopt of unit
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57
58%verbose (* print summary of errors *)
59%pos int (* positions *)
60%start file
61%pure
62%eop EOF
63%noshift EOF
64
65%name Domtool
66
67%right SEMI
a22c187b 68%nonassoc COLON
42198578 69%nonassoc IN
a22c187b 70%right ARROW DARROW
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71%right COMMA
72%nonassoc EQ
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73%right WITH
74%right WHERE
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75%right AND
76%nonassoc CARET BANG
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77
78%%
79
095de39e 80file : docOpt decls expOpt (docOpt, decls, expOpt)
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81
82decls : ([])
095de39e 83 | decl decls (decl :: decls)
234b917a 84
095de39e 85decl : decl' SEMI docOpt (decl', docOpt, (decl'left, docOptright))
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86
87decl' : EXTERN TYPE SYMBOL (DExternType SYMBOL)
88 | EXTERN VAL SYMBOL COLON typ (DExternVal (SYMBOL, typ))
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89 | VAL SYMBOL EQ exp (DVal (SYMBOL, NONE, exp))
90 | VAL SYMBOL COLON typ EQ exp (DVal (SYMBOL, SOME typ, exp))
095de39e 91 | CONTEXT CSYMBOL (DContext CSYMBOL)
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92
93docOpt : (NONE)
94 | DOC (SOME DOC)
95
96expOpt : (NONE)
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97 | exp (SOME (ELocal (exp, (ESkip, (expleft, expright))),
98 (expleft, expright)))
234b917a 99
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100
101exp : apps (apps)
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102 | apps WHERE sets END (ELocal ((ESeq sets, (setsleft, setsright)), apps),
103 (appsleft, ENDright))
104 | apps WITH END (EWith (apps, (ESkip, (WITHleft, ENDright))),
105 (appsleft, ENDright))
106 | apps WITH exp END (EWith (apps, exp), (appsleft, ENDright))
107 | apps WHERE sets WITH END (ELocal ((ESeq sets, (setsleft, setsright)),
108 (EWith (apps, (ESkip, (WITHleft, ENDright))),
109 (appsleft, ENDright))),
110 (appsleft, ENDright))
111 | apps WHERE sets WITH exp END (ELocal ((ESeq sets, (setsleft, setsright)),
112 (EWith (apps, exp), (appsleft, ENDright))),
113 (appsleft, ENDright))
114
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115 | BSLASH SYMBOL COLON LPAREN typ RPAREN ARROW exp (ELam (SYMBOL, SOME typ, exp),
116 (BSLASHleft, expright))
117 | BSLASH SYMBOL ARROW exp (ELam (SYMBOL, NONE, exp), (BSLASHleft, expright))
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118 | BSLASHBSLASH SYMBOL COLON ctxt ARROW exp (EALam (SYMBOL, ctxt, exp),
119 (BSLASHBSLASHleft, expright))
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120 | CSYMBOL EQ exp (ESet (CSYMBOL, exp), (CSYMBOLleft, expright))
121 | exp SEMI exp (let
122 val ls = case #1 exp2 of
123 ESeq ls => exp :: ls
124 | _ => [exp1, exp2]
125 in
126 (ESeq ls, (exp1left, exp2right))
127 end)
6ae327f8 128 | exp SEMI (exp)
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129 | SYMBOL LARROW CSYMBOL SEMI exp (EGet (SYMBOL, NONE, CSYMBOL, exp), (SYMBOLleft, expright))
130 | SYMBOL COLON typ LARROW CSYMBOL SEMI exp (EGet (SYMBOL, SOME typ, CSYMBOL, exp), (SYMBOLleft, expright))
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131
132apps : term (term)
133 | apps term (EApp (apps, term), (appsleft, termright))
134
135term : LPAREN exp RPAREN (exp)
1dd06e3c 136 | BEGIN exp END (exp)
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137 | INT (EInt INT, (INTleft, INTright))
138 | STRING (EString STRING, (STRINGleft, STRINGright))
139 | LBRACK elist RBRACK (EList elist, (LBRACKleft, RBRACKright))
1a4e5a6c 140 | LET exp IN exp END (ELocal (exp1, exp2), (LETleft, ENDright))
a22c187b 141 | SYMBOL (EVar SYMBOL, (SYMBOLleft, SYMBOLright))
42198578 142
6fa78209 143sets : CSYMBOL EQ apps SEMIopt ([(ESet (CSYMBOL, apps), (CSYMBOLleft, appsright))])
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144 | CSYMBOL EQ apps SEMI sets ((ESet (CSYMBOL, apps), (CSYMBOLleft, appsright))
145 :: sets)
146
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147SEMIopt: SEMI ()
148 | ()
149
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150elist : ([])
151 | elistNe (elistNe)
152
153elistNe: exp ([exp])
154 | exp COMMA elistNe (exp :: elistNe)
155
156typ : SYMBOL (TBase SYMBOL, (SYMBOLleft, SYMBOLright))
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157 | LBRACK typ RBRACK (TList typ, (LBRACKleft, RBRACKright))
158 | typ ARROW typ (TArrow (typ1, typ2), (typleft, typright))
63920aa5 159 | LBRACK ctxt RBRACK recd DARROW recd (TAction (ctxt, recd1, recd2), (LBRACKleft, recd2right))
a22c187b 160 | LBRACK ctxt RBRACK recd (TAction (ctxt, recd, StringMap.empty),
63920aa5 161 (LBRACKleft, recdright))
a22c187b 162 | LBRACK ctxt RBRACK (TAction (ctxt, StringMap.empty, StringMap.empty),
63920aa5 163 (LBRACKleft, ctxtright))
a22c187b 164 | LPAREN typ RPAREN (typ)
1a4e5a6c 165 | ctxt DARROW typ (TNested (ctxt, typ), (ctxtleft, typright))
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166
167recd : LBRACE RBRACE (StringMap.empty)
168 | LBRACE recdNe RBRACE (recdNe)
169
170recdNe : CSYMBOL COLON typ (StringMap.insert (StringMap.empty, CSYMBOL, typ))
171 | CSYMBOL COLON typ COMMA recdNe (StringMap.insert (recdNe, CSYMBOL, typ))
172
173ctxt : ROOT (CRoot, (ROOTleft, ROOTright))
174 | CSYMBOL (CConst CSYMBOL, (CSYMBOLleft, CSYMBOLright))
175 | CARET ctxt (CPrefix ctxt, (CARETleft, ctxtright))
176 | BANG ctxt (CNot ctxt, (BANGleft, ctxtright))
177 | ctxt AND ctxt (CAnd (ctxt1, ctxt2), (ctxt1left, ctxt2right))
178 | LPAREN ctxt RPAREN (ctxt)