Mercurial > urweb

annotate src/lacweb.grm @ 91:4327abd52997

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Basic XML stuff
author Adam Chlipala <adamc@hcoop.net>
date Thu, 03 Jul 2008 16:26:28 -0400
parents d3ee072fa609
children 1a4c51fa615c
rev   line source
adamc@1 1 (* Copyright (c) 2008, Adam Chlipala
adamc@1 2 * All rights reserved.
adamc@1 3 *
adamc@1 4 * Redistribution and use in source and binary forms, with or without
adamc@1 5 * modification, are permitted provided that the following conditions are met:
adamc@1 6 *
adamc@1 7 * - Redistributions of source code must retain the above copyright notice,
adamc@1 8 * this list of conditions and the following disclaimer.
adamc@1 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@1 10 * this list of conditions and the following disclaimer in the documentation
adamc@1 11 * and/or other materials provided with the distribution.
adamc@1 12 * - The names of contributors may not be used to endorse or promote products
adamc@1 13 * derived from this software without specific prior written permission.
adamc@1 14 *
adamc@1 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@1 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@1 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@1 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@1 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@1 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@1 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@1 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@1 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@1 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@1 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@1 26 *)
adamc@1 27
adamc@1 28 (* Grammar for Laconic/Web programs *)
adamc@1 29
adamc@4 30 open Source
adamc@1 31
adamc@1 32 val s = ErrorMsg.spanOf
adamc@1 33
adamc@1 34 %%
adamc@1 35 %header (functor LacwebLrValsFn(structure Token : TOKEN))
adamc@1 36
adamc@1 37 %term
adamc@1 38 EOF
adamc@14 39 | STRING of string | INT of Int64.int | FLOAT of Real64.real
adamc@1 40 | SYMBOL of string | CSYMBOL of string
adamc@1 41 | LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
adamc@18 42 | EQ | COMMA | COLON | DCOLON | TCOLON | DOT | HASH | UNDER | UNDERUNDER
adamc@91 43 | DIVIDE | GT
adamc@82 44 | CON | LTYPE | VAL | FOLD | UNIT | KUNIT
adamc@7 45 | TYPE | NAME
adamc@1 46 | ARROW | LARROW | DARROW
adamc@84 47 | FN | PLUSPLUS | DOLLAR | TWIDDLE
adamc@88 48 | STRUCTURE | SIGNATURE | STRUCT | SIG | END | FUNCTOR | WHERE | EXTERN
adamc@88 49 | INCLUDE | OPEN | CONSTRAINT | CONSTRAINTS
adamc@1 50
adamc@91 51 | XML_BEGIN of string | XML_END
adamc@91 52 | NOTAGS of string
adamc@91 53 | BEGIN_TAG of string | END_TAG of string
adamc@91 54
adamc@30 55 %nonterm
adamc@1 56 file of decl list
adamc@1 57 | decls of decl list
adamc@1 58 | decl of decl
adamc@1 59
adamc@30 60 | sgn of sgn
adamc@42 61 | sgntm of sgn
adamc@30 62 | sgi of sgn_item
adamc@30 63 | sgis of sgn_item list
adamc@30 64
adamc@30 65 | str of str
adamc@30 66
adamc@1 67 | kind of kind
adamc@1 68 | kcolon of explicitness
adamc@1 69
adamc@34 70 | path of string list * string
adamc@34 71 | spath of str
adamc@59 72 | mpath of string list
adamc@34 73
adamc@1 74 | cexp of con
adamc@1 75 | capps of con
adamc@1 76 | cterm of con
adamc@1 77 | ident of con
adamc@1 78 | rcon of (con * con) list
adamc@83 79 | rconn of (con * con) list
adamc@1 80 | rcone of (con * con) list
adamc@1 81
adamc@8 82 | eexp of exp
adamc@8 83 | eapps of exp
adamc@8 84 | eterm of exp
adamc@12 85 | rexp of (con * exp) list
adamc@91 86 | xml of exp
adamc@91 87 | xmlOne of exp
adamc@8 88
adamc@1 89 %verbose (* print summary of errors *)
adamc@1 90 %pos int (* positions *)
adamc@1 91 %start file
adamc@1 92 %pure
adamc@1 93 %eop EOF
adamc@1 94 %noshift EOF
adamc@1 95
adamc@1 96 %name Lacweb
adamc@1 97
adamc@1 98 %nonassoc DARROW
adamc@1 99 %nonassoc COLON
adamc@6 100 %nonassoc DCOLON TCOLON
adamc@1 101 %right COMMA
adamc@1 102 %right ARROW LARROW
adamc@1 103 %right PLUSPLUS
adamc@84 104 %nonassoc TWIDDLE
adamc@1 105 %nonassoc DOLLAR
adamc@1 106 %left DOT
adamc@1 107
adamc@1 108 %%
adamc@1 109
adamc@1 110 file : decls (decls)
adamc@54 111 | SIG sgis ([(DSgn ("?", (SgnConst sgis, s (SIGleft, sgisright))),
adamc@54 112 s (SIGleft, sgisright))])
adamc@1 113
adamc@1 114 decls : ([])
adamc@1 115 | decl decls (decl :: decls)
adamc@1 116
adamc@1 117 decl : CON SYMBOL EQ cexp (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@1 118 | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@7 119 | LTYPE SYMBOL EQ cexp (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@7 120 s (LTYPEleft, cexpright))
adamc@8 121 | VAL SYMBOL EQ eexp (DVal (SYMBOL, NONE, eexp), s (VALleft, eexpright))
adamc@8 122 | VAL SYMBOL COLON cexp EQ eexp (DVal (SYMBOL, SOME cexp, eexp), s (VALleft, eexpright))
adamc@1 123
adamc@30 124 | SIGNATURE CSYMBOL EQ sgn (DSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@30 125 | STRUCTURE CSYMBOL EQ str (DStr (CSYMBOL, NONE, str), s (STRUCTUREleft, strright))
adamc@30 126 | STRUCTURE CSYMBOL COLON sgn EQ str (DStr (CSYMBOL, SOME sgn, str), s (STRUCTUREleft, strright))
adamc@42 127 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN EQ str
adamc@42 128 (DStr (CSYMBOL1, NONE,
adamc@42 129 (StrFun (CSYMBOL2, sgn1, NONE, str), s (FUNCTORleft, strright))),
adamc@42 130 s (FUNCTORleft, strright))
adamc@42 131 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn EQ str
adamc@42 132 (DStr (CSYMBOL1, NONE,
adamc@42 133 (StrFun (CSYMBOL2, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))),
adamc@42 134 s (FUNCTORleft, strright))
adamc@48 135 | EXTERN STRUCTURE CSYMBOL COLON sgn (DFfiStr (CSYMBOL, sgn), s (EXTERNleft, sgnright))
adamc@61 136 | OPEN mpath (case mpath of
adamc@61 137 [] => raise Fail "Impossible mpath parse [1]"
adamc@61 138 | m :: ms => (DOpen (m, ms), s (OPENleft, mpathright)))
adamc@88 139 | OPEN CONSTRAINTS mpath (case mpath of
adamc@88 140 [] => raise Fail "Impossible mpath parse [3]"
adamc@88 141 | m :: ms => (DOpenConstraints (m, ms), s (OPENleft, mpathright)))
adamc@88 142 | CONSTRAINT cterm TWIDDLE cterm (DConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
adamc@30 143
adamc@42 144 sgn : sgntm (sgntm)
adamc@40 145 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
adamc@40 146 (SgnFun (CSYMBOL, sgn1, sgn2), s (FUNCTORleft, sgn2right))
adamc@30 147
adamc@42 148 sgntm : SIG sgis END (SgnConst sgis, s (SIGleft, ENDright))
adamc@59 149 | mpath (case mpath of
adamc@61 150 [] => raise Fail "Impossible mpath parse [2]"
adamc@59 151 | [x] => SgnVar x
adamc@59 152 | m :: ms => SgnProj (m,
adamc@59 153 List.take (ms, length ms - 1),
adamc@59 154 List.nth (ms, length ms - 1)),
adamc@59 155 s (mpathleft, mpathright))
adamc@42 156 | sgntm WHERE CON SYMBOL EQ cexp (SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
adamc@42 157 | sgntm WHERE LTYPE SYMBOL EQ cexp(SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
adamc@42 158 | LPAREN sgn RPAREN (sgn)
adamc@42 159
adamc@30 160 sgi : CON SYMBOL DCOLON kind (SgiConAbs (SYMBOL, kind), s (CONleft, kindright))
adamc@30 161 | LTYPE SYMBOL (SgiConAbs (SYMBOL, (KType, s (LTYPEleft, SYMBOLright))),
adamc@30 162 s (LTYPEleft, SYMBOLright))
adamc@30 163 | CON SYMBOL EQ cexp (SgiCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@30 164 | CON SYMBOL DCOLON kind EQ cexp (SgiCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@30 165 | LTYPE SYMBOL EQ cexp (SgiCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@30 166 s (LTYPEleft, cexpright))
adamc@30 167 | VAL SYMBOL COLON cexp (SgiVal (SYMBOL, cexp), s (VALleft, cexpright))
adamc@30 168
adamc@30 169 | STRUCTURE CSYMBOL COLON sgn (SgiStr (CSYMBOL, sgn), s (STRUCTUREleft, sgnright))
adamc@59 170 | SIGNATURE CSYMBOL EQ sgn (SgiSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@42 171 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
adamc@42 172 (SgiStr (CSYMBOL1,
adamc@42 173 (SgnFun (CSYMBOL2, sgn1, sgn2), s (FUNCTORleft, sgn2right))),
adamc@42 174 s (FUNCTORleft, sgn2right))
adamc@58 175 | INCLUDE sgn (SgiInclude sgn, s (INCLUDEleft, sgnright))
adamc@88 176 | CONSTRAINT cterm TWIDDLE cterm (SgiConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
adamc@30 177
adamc@30 178 sgis : ([])
adamc@30 179 | sgi sgis (sgi :: sgis)
adamc@30 180
adamc@30 181 str : STRUCT decls END (StrConst decls, s (STRUCTleft, ENDright))
adamc@34 182 | spath (spath)
adamc@40 183 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN DARROW str
adamc@40 184 (StrFun (CSYMBOL, sgn, NONE, str), s (FUNCTORleft, strright))
adamc@40 185 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn DARROW str
adamc@40 186 (StrFun (CSYMBOL, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))
adamc@44 187 | spath LPAREN str RPAREN (StrApp (spath, str), s (spathleft, RPARENright))
adamc@34 188
adamc@34 189 spath : CSYMBOL (StrVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34 190 | spath DOT CSYMBOL (StrProj (spath, CSYMBOL), s (spathleft, CSYMBOLright))
adamc@30 191
adamc@1 192 kind : TYPE (KType, s (TYPEleft, TYPEright))
adamc@1 193 | NAME (KName, s (NAMEleft, NAMEright))
adamc@1 194 | LBRACE kind RBRACE (KRecord kind, s (LBRACEleft, RBRACEright))
adamc@1 195 | kind ARROW kind (KArrow (kind1, kind2), s (kind1left, kind2right))
adamc@1 196 | LPAREN kind RPAREN (#1 kind, s (LPARENleft, RPARENright))
adamc@82 197 | KUNIT (KUnit, s (KUNITleft, KUNITright))
adamc@18 198 | UNDERUNDER (KWild, s (UNDERUNDERleft, UNDERUNDERright))
adamc@1 199
adamc@1 200 capps : cterm (cterm)
adamc@1 201 | capps cterm (CApp (capps, cterm), s (cappsleft, ctermright))
adamc@1 202
adamc@1 203 cexp : capps (capps)
adamc@1 204 | cexp ARROW cexp (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
adamc@15 205 | SYMBOL kcolon kind ARROW cexp (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
adamc@1 206
adamc@1 207 | cexp PLUSPLUS cexp (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
adamc@1 208
adamc@67 209 | FN SYMBOL DARROW cexp (CAbs (SYMBOL, NONE, cexp), s (FNleft, cexpright))
adamc@67 210 | FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, SOME kind, cexp), s (FNleft, cexpright))
adamc@84 211 | cterm TWIDDLE cterm DARROW cexp(CDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
adamc@85 212 | cterm TWIDDLE cterm ARROW cexp (TDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
adamc@1 213
adamc@8 214 | LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))
adamc@6 215
adamc@18 216 | UNDER DCOLON kind (CWild kind, s (UNDERleft, UNDERright))
adamc@18 217
adamc@1 218 kcolon : DCOLON (Explicit)
adamc@1 219 | TCOLON (Implicit)
adamc@1 220
adamc@34 221 path : SYMBOL ([], SYMBOL)
adamc@34 222 | CSYMBOL DOT path (let val (ms, x) = path in (CSYMBOL :: ms, x) end)
adamc@34 223
adamc@59 224 mpath : CSYMBOL ([CSYMBOL])
adamc@59 225 | CSYMBOL DOT mpath (CSYMBOL :: mpath)
adamc@59 226
adamc@1 227 cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
adamc@1 228 | LBRACK rcon RBRACK (CRecord rcon, s (LBRACKleft, RBRACKright))
adamc@83 229 | LBRACK rconn RBRACK (CRecord rconn, s (LBRACKleft, RBRACKright))
adamc@1 230 | LBRACE rcone RBRACE (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
adamc@1 231 s (LBRACEleft, RBRACEright))
adamc@1 232 | DOLLAR cterm (TRecord cterm, s (DOLLARleft, ctermright))
adamc@1 233 | HASH CSYMBOL (CName CSYMBOL, s (HASHleft, CSYMBOLright))
adamc@1 234
adamc@34 235 | path (CVar path, s (pathleft, pathright))
adamc@18 236 | UNDER (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
adamc@67 237 | FOLD (CFold, s (FOLDleft, FOLDright))
adamc@82 238 | UNIT (CUnit, s (UNITleft, UNITright))
adamc@1 239
adamc@1 240 rcon : ([])
adamc@1 241 | ident EQ cexp ([(ident, cexp)])
adamc@1 242 | ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
adamc@1 243
adamc@83 244 rconn : ident ([(ident, (CUnit, s (identleft, identright)))])
adamc@83 245 | ident COMMA rconn ((ident, (CUnit, s (identleft, identright))) :: rconn)
adamc@83 246
adamc@1 247 rcone : ([])
adamc@1 248 | ident COLON cexp ([(ident, cexp)])
adamc@1 249 | ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
adamc@1 250
adamc@1 251 ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@89 252 | path (CVar path, s (pathleft, pathright))
adamc@8 253
adamc@8 254 eapps : eterm (eterm)
adamc@8 255 | eapps eterm (EApp (eapps, eterm), s (eappsleft, etermright))
adamc@8 256 | eapps LBRACK cexp RBRACK (ECApp (eapps, cexp), s (eappsleft, RBRACKright))
adamc@8 257
adamc@8 258 eexp : eapps (eapps)
adamc@8 259 | FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
adamc@8 260 | FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
adamc@8 261 | FN SYMBOL DARROW eexp (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
adamc@85 262 | FN cterm TWIDDLE cterm DARROW eexp(EDisjoint (cterm1, cterm2, eexp), s (cterm1left, eexpright))
adamc@8 263
adamc@8 264 | LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
adamc@12 265 | eterm DOT ident (EField (eterm, ident), s (etermleft, identright))
adamc@8 266
adamc@8 267 eterm : LPAREN eexp RPAREN (#1 eexp, s (LPARENleft, RPARENright))
adamc@8 268
adamc@34 269 | path (EVar path, s (pathleft, pathright))
adamc@12 270 | LBRACE rexp RBRACE (ERecord rexp, s (LBRACEleft, RBRACEright))
adamc@12 271
adamc@14 272 | INT (EPrim (Prim.Int INT), s (INTleft, INTright))
adamc@14 273 | FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
adamc@14 274 | STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
adamc@14 275
adamc@71 276 | FOLD (EFold, s (FOLDleft, FOLDright))
adamc@71 277
adamc@91 278 | XML_BEGIN xml XML_END (xml)
adamc@91 279 | XML_BEGIN XML_END (EApp ((EVar (["Basis"], "cdata"), s (XML_BEGINleft, XML_ENDright)),
adamc@91 280 (EPrim (Prim.String ""), s (XML_BEGINleft, XML_ENDright))),
adamc@91 281 s (XML_BEGINleft, XML_ENDright))
adamc@91 282
adamc@12 283 rexp : ([])
adamc@12 284 | ident EQ eexp ([(ident, eexp)])
adamc@12 285 | ident EQ eexp COMMA rexp ((ident, eexp) :: rexp)
adamc@91 286
adamc@91 287 xml : xmlOne xml (let
adamc@91 288 val pos = s (xmlOneleft, xmlright)
adamc@91 289 in
adamc@91 290 (EApp ((EApp (
adamc@91 291 (ECApp ((EVar (["Basis"], "join"), pos),
adamc@91 292 (CWild (KRecord (KUnit, pos), pos), pos)), pos),
adamc@91 293 xmlOne), pos),
adamc@91 294 xml), pos)
adamc@91 295 end)
adamc@91 296 | xmlOne (xmlOne)
adamc@91 297
adamc@91 298 xmlOne : NOTAGS (EApp ((EVar (["Basis"], "cdata"), s (NOTAGSleft, NOTAGSright)),
adamc@91 299 (EPrim (Prim.String NOTAGS), s (NOTAGSleft, NOTAGSright))),
adamc@91 300 s (NOTAGSleft, NOTAGSright))
adamc@91 301 | BEGIN_TAG DIVIDE GT (EApp ((EApp ((EVar (["Basis"], "tag"), s (BEGIN_TAGleft, GTright)),
adamc@91 302 (EVar ([], BEGIN_TAG), s (BEGIN_TAGleft, GTright))),
adamc@91 303 s (BEGIN_TAGleft, GTright)),
adamc@91 304 (EApp ((EVar (["Basis"], "cdata"), s (BEGIN_TAGleft, GTright)),
adamc@91 305 (EPrim (Prim.String ""), s (BEGIN_TAGleft, GTright))),
adamc@91 306 s (BEGIN_TAGleft, GTright))), s (BEGIN_TAGleft, GTright))