summaryrefslogtreecommitdiff
path: root/src/lacweb.grm
blob: 62e3c9e83d13aa6aa1ecb1ec647726731d50c064 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
(* Copyright (c) 2008, Adam Chlipala
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - The names of contributors may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *)

(* Grammar for Laconic/Web programs *)

open Source

val s = ErrorMsg.spanOf

fun uppercaseFirst "" = ""
  | uppercaseFirst s = str (Char.toUpper (String.sub (s, 0))) ^ String.extract (s, 1, NONE)

%%
%header (functor LacwebLrValsFn(structure Token : TOKEN))

%term 
   EOF
 | STRING of string | INT of Int64.int | FLOAT of Real64.real
 | SYMBOL of string | CSYMBOL of string
 | LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
 | EQ | COMMA | COLON | DCOLON | TCOLON | DOT | HASH | UNDER | UNDERUNDER
 | DIVIDE | GT
 | CON | LTYPE | VAL | REC | AND | FOLD | UNIT | KUNIT
 | TYPE | NAME
 | ARROW | LARROW | DARROW
 | FN | PLUSPLUS | DOLLAR | TWIDDLE
 | STRUCTURE | SIGNATURE | STRUCT | SIG | END | FUNCTOR | WHERE | EXTERN
 | INCLUDE | OPEN | CONSTRAINT | CONSTRAINTS | EXPORT

 | XML_BEGIN of string | XML_END
 | NOTAGS of string 
 | BEGIN_TAG of string | END_TAG of string

%nonterm
   file of decl list
 | decls of decl list
 | decl of decl
 | vali of string * con option * exp
 | valis of (string * con option * exp) list

 | sgn of sgn
 | sgntm of sgn
 | sgi of sgn_item
 | sgis of sgn_item list

 | str of str

 | kind of kind
 | kcolon of explicitness

 | path of string list * string
 | spath of str
 | mpath of string list

 | cexp of con
 | capps of con
 | cterm of con
 | ident of con
 | rcon of (con * con) list
 | rconn of (con * con) list
 | rcone of (con * con) list

 | eexp of exp
 | eapps of exp
 | eterm of exp
 | rexp of (con * exp) list
 | xml of exp
 | xmlOne of exp

 | attrs of (con * exp) list
 | attr of con * exp
 | attrv of exp

%verbose                                (* print summary of errors *)
%pos int                                (* positions *)
%start file
%pure
%eop EOF
%noshift EOF

%name Lacweb

%nonassoc DARROW
%nonassoc COLON
%nonassoc DCOLON TCOLON
%right COMMA
%right ARROW LARROW
%right PLUSPLUS
%nonassoc TWIDDLE
%nonassoc DOLLAR
%left DOT

%%

file   : decls                          (decls)
       | SIG sgis                       ([(DSgn ("?", (SgnConst sgis, s (SIGleft, sgisright))),
                                           s (SIGleft, sgisright))])

decls  :                                ([])
       | decl decls                     (decl :: decls)

decl   : CON SYMBOL EQ cexp             (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
       | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
       | LTYPE SYMBOL EQ cexp           (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
                                         s (LTYPEleft, cexpright))
       | VAL vali                       (DVal vali, s (VALleft, valiright))
       | VAL REC valis                  (DValRec valis, s (VALleft, valisright))

       | SIGNATURE CSYMBOL EQ sgn       (DSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
       | STRUCTURE CSYMBOL EQ str       (DStr (CSYMBOL, NONE, str), s (STRUCTUREleft, strright))
       | STRUCTURE CSYMBOL COLON sgn EQ str (DStr (CSYMBOL, SOME sgn, str), s (STRUCTUREleft, strright))
       | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN EQ str
                                        (DStr (CSYMBOL1, NONE,
                                               (StrFun (CSYMBOL2, sgn1, NONE, str), s (FUNCTORleft, strright))),
                                         s (FUNCTORleft, strright))
       | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn EQ str
                                        (DStr (CSYMBOL1, NONE,
                                               (StrFun (CSYMBOL2, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))),
                                         s (FUNCTORleft, strright))
       | EXTERN STRUCTURE CSYMBOL COLON sgn (DFfiStr (CSYMBOL, sgn), s (EXTERNleft, sgnright))
       | OPEN mpath                     (case mpath of
                                             [] => raise Fail "Impossible mpath parse [1]"
                                           | m :: ms => (DOpen (m, ms), s (OPENleft, mpathright)))
       | OPEN CONSTRAINTS mpath         (case mpath of
                                             [] => raise Fail "Impossible mpath parse [3]"
                                           | m :: ms => (DOpenConstraints (m, ms), s (OPENleft, mpathright)))
       | CONSTRAINT cterm TWIDDLE cterm (DConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
       | EXPORT spath                   (DExport spath, s (EXPORTleft, spathright))

vali   : SYMBOL EQ eexp                 (SYMBOL, NONE, eexp)
       | SYMBOL COLON cexp EQ eexp      (SYMBOL, SOME cexp, eexp)

valis  : vali                           ([vali])
       | vali AND valis                 (vali :: valis)

sgn    : sgntm                          (sgntm)
       | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
                                        (SgnFun (CSYMBOL, sgn1, sgn2), s (FUNCTORleft, sgn2right))

sgntm  : SIG sgis END                   (SgnConst sgis, s (SIGleft, ENDright))
       | mpath                          (case mpath of
                                             [] => raise Fail "Impossible mpath parse [2]"
                                           | [x] => SgnVar x
                                           | m :: ms => SgnProj (m,
                                                                 List.take (ms, length ms - 1),
                                                                 List.nth (ms, length ms - 1)),
                                         s (mpathleft, mpathright))
       | sgntm WHERE CON SYMBOL EQ cexp (SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
       | sgntm WHERE LTYPE SYMBOL EQ cexp(SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
       | LPAREN sgn RPAREN              (sgn)

sgi    : CON SYMBOL DCOLON kind         (SgiConAbs (SYMBOL, kind), s (CONleft, kindright))
       | LTYPE SYMBOL                   (SgiConAbs (SYMBOL, (KType, s (LTYPEleft, SYMBOLright))),
                                         s (LTYPEleft, SYMBOLright))
       | CON SYMBOL EQ cexp             (SgiCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
       | CON SYMBOL DCOLON kind EQ cexp (SgiCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
       | LTYPE SYMBOL EQ cexp           (SgiCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
                                         s (LTYPEleft, cexpright))
       | VAL SYMBOL COLON cexp          (SgiVal (SYMBOL, cexp), s (VALleft, cexpright))

       | STRUCTURE CSYMBOL COLON sgn    (SgiStr (CSYMBOL, sgn), s (STRUCTUREleft, sgnright))
       | SIGNATURE CSYMBOL EQ sgn       (SgiSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
       | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
                                        (SgiStr (CSYMBOL1,
                                                 (SgnFun (CSYMBOL2, sgn1, sgn2), s (FUNCTORleft, sgn2right))),
                                         s (FUNCTORleft, sgn2right))
       | INCLUDE sgn                    (SgiInclude sgn, s (INCLUDEleft, sgnright))
       | CONSTRAINT cterm TWIDDLE cterm (SgiConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))

sgis   :                                ([])
       | sgi sgis                       (sgi :: sgis)

str    : STRUCT decls END               (StrConst decls, s (STRUCTleft, ENDright))
       | spath                          (spath)
       | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN DARROW str
                                        (StrFun (CSYMBOL, sgn, NONE, str), s (FUNCTORleft, strright))
       | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn DARROW str
                                        (StrFun (CSYMBOL, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))
       | spath LPAREN str RPAREN        (StrApp (spath, str), s (spathleft, RPARENright))

spath  : CSYMBOL                        (StrVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
       | spath DOT CSYMBOL              (StrProj (spath, CSYMBOL), s (spathleft, CSYMBOLright))

kind   : TYPE                           (KType, s (TYPEleft, TYPEright))
       | NAME                           (KName, s (NAMEleft, NAMEright))
       | LBRACE kind RBRACE             (KRecord kind, s (LBRACEleft, RBRACEright))
       | kind ARROW kind                (KArrow (kind1, kind2), s (kind1left, kind2right))
       | LPAREN kind RPAREN             (#1 kind, s (LPARENleft, RPARENright))
       | KUNIT                          (KUnit, s (KUNITleft, KUNITright))
       | UNDERUNDER                     (KWild, s (UNDERUNDERleft, UNDERUNDERright))

capps  : cterm                          (cterm)
       | capps cterm                    (CApp (capps, cterm), s (cappsleft, ctermright))

cexp   : capps                          (capps)
       | cexp ARROW cexp                (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
       | SYMBOL kcolon kind ARROW cexp  (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))

       | cexp PLUSPLUS cexp             (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))

       | FN SYMBOL DARROW cexp          (CAbs (SYMBOL, NONE, cexp), s (FNleft, cexpright))
       | FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, SOME kind, cexp), s (FNleft, cexpright))
       | cterm TWIDDLE cterm DARROW cexp(CDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
       | cterm TWIDDLE cterm ARROW cexp (TDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))

       | LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))

       | UNDER DCOLON kind              (CWild kind, s (UNDERleft, UNDERright))

kcolon : DCOLON                         (Explicit)
       | TCOLON                         (Implicit)

path   : SYMBOL                         ([], SYMBOL)
       | CSYMBOL DOT path               (let val (ms, x) = path in (CSYMBOL :: ms, x) end)

mpath  : CSYMBOL                        ([CSYMBOL])
       | CSYMBOL DOT mpath              (CSYMBOL :: mpath)

cterm  : LPAREN cexp RPAREN             (#1 cexp, s (LPARENleft, RPARENright))
       | LBRACK rcon RBRACK             (CRecord rcon, s (LBRACKleft, RBRACKright))
       | LBRACK rconn RBRACK            (CRecord rconn, s (LBRACKleft, RBRACKright))
       | LBRACE rcone RBRACE            (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
					 s (LBRACEleft, RBRACEright))
       | DOLLAR cterm                   (TRecord cterm, s (DOLLARleft, ctermright))
       | HASH CSYMBOL                   (CName CSYMBOL, s (HASHleft, CSYMBOLright))

       | path                           (CVar path, s (pathleft, pathright))
       | UNDER                          (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
       | FOLD                           (CFold, s (FOLDleft, FOLDright))
       | UNIT                           (CUnit, s (UNITleft, UNITright))

rcon   :                                ([])
       | ident EQ cexp                  ([(ident, cexp)])
       | ident EQ cexp COMMA rcon       ((ident, cexp) :: rcon)

rconn  : ident                          ([(ident, (CUnit, s (identleft, identright)))])
       | ident COMMA rconn              ((ident, (CUnit, s (identleft, identright))) :: rconn)

rcone  :                                ([])
       | ident COLON cexp               ([(ident, cexp)])
       | ident COLON cexp COMMA rcone   ((ident, cexp) :: rcone)

ident  : CSYMBOL                        (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
       | path                           (CVar path, s (pathleft, pathright))

eapps  : eterm                          (eterm)
       | eapps eterm                    (EApp (eapps, eterm), s (eappsleft, etermright))
       | eapps LBRACK cexp RBRACK       (ECApp (eapps, cexp), s (eappsleft, RBRACKright))

eexp   : eapps                          (eapps)
       | FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
       | FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
       | FN SYMBOL DARROW eexp          (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
       | LBRACK cterm TWIDDLE cterm RBRACK DARROW eexp(EDisjoint (cterm1, cterm2, eexp), s (LBRACKleft, RBRACKright))
       | FN UNIT DARROW eexp            (let
                                             val loc = s (FNleft, eexpright)
                                         in
                                             (EAbs ("_", SOME (TRecord (CRecord [], loc), loc), eexp), loc)
                                         end)

       | LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
       | eterm DOT ident                (EField (eterm, ident), s (etermleft, identright))

eterm  : LPAREN eexp RPAREN             (#1 eexp, s (LPARENleft, RPARENright))

       | path                           (EVar path, s (pathleft, pathright))
       | LBRACE rexp RBRACE             (ERecord rexp, s (LBRACEleft, RBRACEright))
       | UNIT                           (ERecord [], s (UNITleft, UNITright))

       | INT                            (EPrim (Prim.Int INT), s (INTleft, INTright))
       | FLOAT                          (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
       | STRING                         (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))

       | FOLD                           (EFold, s (FOLDleft, FOLDright))

       | XML_BEGIN xml XML_END          (xml)
       | XML_BEGIN XML_END              (EApp ((EVar (["Basis"], "cdata"), s (XML_BEGINleft, XML_ENDright)),
                                               (EPrim (Prim.String ""), s (XML_BEGINleft, XML_ENDright))),
                                         s (XML_BEGINleft, XML_ENDright))

rexp   :                                ([])
       | ident EQ eexp                  ([(ident, eexp)])
       | ident EQ eexp COMMA rexp       ((ident, eexp) :: rexp)

xml    : xmlOne xml                  (let
                                          val pos = s (xmlOneleft, xmlright)
                                      in
                                          (EApp ((EApp (
                                                  (ECApp ((EVar (["Basis"], "join"), pos),
                                                          (CWild (KRecord (KUnit, pos), pos), pos)), pos),
                                                  xmlOne), pos),
                                                  xml), pos)
                                      end)
       | xmlOne                      (xmlOne)

xmlOne : NOTAGS                      (EApp ((EVar (["Basis"], "cdata"), s (NOTAGSleft, NOTAGSright)),
                                            (EPrim (Prim.String NOTAGS), s (NOTAGSleft, NOTAGSright))),
                                      s (NOTAGSleft, NOTAGSright))
       | BEGIN_TAG attrs DIVIDE GT   (let
                                          val pos = s (BEGIN_TAGleft, GTright)
                                      in
                                          (EApp ((EApp ((EApp ((EVar (["Basis"], "tag"), pos),
                                                               (ERecord attrs, pos)), pos),
                                                        (EVar ([], BEGIN_TAG), pos)),
                                                  pos),
                                                 (EApp ((EVar (["Basis"], "cdata"), pos),
                                                        (EPrim (Prim.String ""), pos)),
                                                  pos)), pos)
                                      end)

       | BEGIN_TAG attrs GT xml END_TAG(let
                                            val pos = s (BEGIN_TAGleft, GTright)
                                        in
                                            if BEGIN_TAG = END_TAG then
                                                (EApp ((EApp ((EApp ((EVar (["Basis"], "tag"), pos),
                                                                     (ERecord attrs, pos)), pos),
                                                              (EVar ([], BEGIN_TAG), pos)),
                                                        pos),
                                                       xml), pos)
                                            else
                                                (ErrorMsg.errorAt pos "Begin and end tags don't match.";
                                                 (EFold, pos))
                                        end)
       | LBRACE eexp RBRACE          (eexp)
                                          
attrs  :                                ([])
       | attr attrs                     (attr :: attrs)

attr   : SYMBOL EQ attrv                ((CName (uppercaseFirst SYMBOL), s (SYMBOLleft, SYMBOLright)), attrv)

attrv  : INT                            (EPrim (Prim.Int INT), s (INTleft, INTright))
       | FLOAT                          (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
       | STRING                         (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
       | LBRACE eexp RBRACE             (eexp)