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Parsing basic patterns
author Adam Chlipala <adamc@hcoop.net>
date Tue, 29 Jul 2008 16:38:15 -0400
parents adc4e42e3adc
children 8221b95cc24c
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@104 34 fun uppercaseFirst "" = ""
adamc@104 35 | uppercaseFirst s = str (Char.toUpper (String.sub (s, 0))) ^ String.extract (s, 1, NONE)
adamc@104 36
adamc@1 37 %%
adamc@1 38 %header (functor LacwebLrValsFn(structure Token : TOKEN))
adamc@1 39
adamc@1 40 %term
adamc@1 41 EOF
adamc@14 42 | STRING of string | INT of Int64.int | FLOAT of Real64.real
adamc@1 43 | SYMBOL of string | CSYMBOL of string
adamc@1 44 | LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
adamc@156 45 | EQ | COMMA | COLON | DCOLON | TCOLON | DOT | HASH | UNDER | UNDERUNDER | BAR
adamc@91 46 | DIVIDE | GT
adamc@123 47 | CON | LTYPE | VAL | REC | AND | FOLD | UNIT | KUNIT
adamc@156 48 | DATATYPE | OF
adamc@7 49 | TYPE | NAME
adamc@1 50 | ARROW | LARROW | DARROW
adamc@149 51 | FN | PLUSPLUS | MINUSMINUS | DOLLAR | TWIDDLE
adamc@88 52 | STRUCTURE | SIGNATURE | STRUCT | SIG | END | FUNCTOR | WHERE | EXTERN
adamc@109 53 | INCLUDE | OPEN | CONSTRAINT | CONSTRAINTS | EXPORT
adamc@170 54 | CASE
adamc@1 55
adamc@91 56 | XML_BEGIN of string | XML_END
adamc@91 57 | NOTAGS of string
adamc@91 58 | BEGIN_TAG of string | END_TAG of string
adamc@91 59
adamc@30 60 %nonterm
adamc@1 61 file of decl list
adamc@1 62 | decls of decl list
adamc@1 63 | decl of decl
adamc@123 64 | vali of string * con option * exp
adamc@123 65 | valis of (string * con option * exp) list
adamc@1 66
adamc@156 67 | barOpt of unit
adamc@156 68 | dcons of (string * con option) list
adamc@156 69 | dcon of string * con option
adamc@156 70
adamc@30 71 | sgn of sgn
adamc@42 72 | sgntm of sgn
adamc@30 73 | sgi of sgn_item
adamc@30 74 | sgis of sgn_item list
adamc@30 75
adamc@30 76 | str of str
adamc@30 77
adamc@1 78 | kind of kind
adamc@1 79 | kcolon of explicitness
adamc@1 80
adamc@34 81 | path of string list * string
adamc@156 82 | cpath of string list * string
adamc@34 83 | spath of str
adamc@59 84 | mpath of string list
adamc@34 85
adamc@1 86 | cexp of con
adamc@1 87 | capps of con
adamc@1 88 | cterm of con
adamc@1 89 | ident of con
adamc@1 90 | rcon of (con * con) list
adamc@83 91 | rconn of (con * con) list
adamc@1 92 | rcone of (con * con) list
adamc@1 93
adamc@8 94 | eexp of exp
adamc@8 95 | eapps of exp
adamc@8 96 | eterm of exp
adamc@12 97 | rexp of (con * exp) list
adamc@91 98 | xml of exp
adamc@91 99 | xmlOne of exp
adamc@141 100 | tag of string * exp
adamc@141 101 | tagHead of string * exp
adamc@8 102
adamc@170 103 | branch of pat * exp
adamc@170 104 | branchs of (pat * exp) list
adamc@170 105 | pat of pat
adamc@170 106 | pterm of pat
adamc@170 107
adamc@104 108 | attrs of (con * exp) list
adamc@104 109 | attr of con * exp
adamc@104 110 | attrv of exp
adamc@104 111
adamc@1 112 %verbose (* print summary of errors *)
adamc@1 113 %pos int (* positions *)
adamc@1 114 %start file
adamc@1 115 %pure
adamc@1 116 %eop EOF
adamc@1 117 %noshift EOF
adamc@1 118
adamc@1 119 %name Lacweb
adamc@1 120
adamc@1 121 %nonassoc DARROW
adamc@1 122 %nonassoc COLON
adamc@6 123 %nonassoc DCOLON TCOLON
adamc@1 124 %right COMMA
adamc@1 125 %right ARROW LARROW
adamc@149 126 %right PLUSPLUS MINUSMINUS
adamc@84 127 %nonassoc TWIDDLE
adamc@1 128 %nonassoc DOLLAR
adamc@1 129 %left DOT
adamc@1 130
adamc@1 131 %%
adamc@1 132
adamc@1 133 file : decls (decls)
adamc@54 134 | SIG sgis ([(DSgn ("?", (SgnConst sgis, s (SIGleft, sgisright))),
adamc@54 135 s (SIGleft, sgisright))])
adamc@1 136
adamc@1 137 decls : ([])
adamc@1 138 | decl decls (decl :: decls)
adamc@1 139
adamc@1 140 decl : CON SYMBOL EQ cexp (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@1 141 | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@7 142 | LTYPE SYMBOL EQ cexp (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@7 143 s (LTYPEleft, cexpright))
adamc@156 144 | DATATYPE SYMBOL EQ barOpt dcons(DDatatype (SYMBOL, dcons), s (DATATYPEleft, dconsright))
adamc@157 145 | DATATYPE SYMBOL EQ DATATYPE CSYMBOL DOT path
adamc@157 146 (DDatatypeImp (SYMBOL, CSYMBOL :: #1 path, #2 path), s (DATATYPEleft, pathright))
adamc@123 147 | VAL vali (DVal vali, s (VALleft, valiright))
adamc@123 148 | VAL REC valis (DValRec valis, s (VALleft, valisright))
adamc@1 149
adamc@30 150 | SIGNATURE CSYMBOL EQ sgn (DSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@30 151 | STRUCTURE CSYMBOL EQ str (DStr (CSYMBOL, NONE, str), s (STRUCTUREleft, strright))
adamc@30 152 | STRUCTURE CSYMBOL COLON sgn EQ str (DStr (CSYMBOL, SOME sgn, str), s (STRUCTUREleft, strright))
adamc@42 153 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN EQ str
adamc@42 154 (DStr (CSYMBOL1, NONE,
adamc@42 155 (StrFun (CSYMBOL2, sgn1, NONE, str), s (FUNCTORleft, strright))),
adamc@42 156 s (FUNCTORleft, strright))
adamc@42 157 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn EQ str
adamc@42 158 (DStr (CSYMBOL1, NONE,
adamc@42 159 (StrFun (CSYMBOL2, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))),
adamc@42 160 s (FUNCTORleft, strright))
adamc@48 161 | EXTERN STRUCTURE CSYMBOL COLON sgn (DFfiStr (CSYMBOL, sgn), s (EXTERNleft, sgnright))
adamc@61 162 | OPEN mpath (case mpath of
adamc@61 163 [] => raise Fail "Impossible mpath parse [1]"
adamc@61 164 | m :: ms => (DOpen (m, ms), s (OPENleft, mpathright)))
adamc@88 165 | OPEN CONSTRAINTS mpath (case mpath of
adamc@88 166 [] => raise Fail "Impossible mpath parse [3]"
adamc@88 167 | m :: ms => (DOpenConstraints (m, ms), s (OPENleft, mpathright)))
adamc@88 168 | CONSTRAINT cterm TWIDDLE cterm (DConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
adamc@109 169 | EXPORT spath (DExport spath, s (EXPORTleft, spathright))
adamc@30 170
adamc@156 171 barOpt : ()
adamc@156 172 | BAR ()
adamc@156 173
adamc@156 174 dcons : dcon ([dcon])
adamc@156 175 | dcon BAR dcons (dcon :: dcons)
adamc@156 176
adamc@156 177 dcon : CSYMBOL (CSYMBOL, NONE)
adamc@156 178 | CSYMBOL OF cexp (CSYMBOL, SOME cexp)
adamc@156 179
adamc@123 180 vali : SYMBOL EQ eexp (SYMBOL, NONE, eexp)
adamc@123 181 | SYMBOL COLON cexp EQ eexp (SYMBOL, SOME cexp, eexp)
adamc@123 182
adamc@123 183 valis : vali ([vali])
adamc@123 184 | vali AND valis (vali :: valis)
adamc@123 185
adamc@42 186 sgn : sgntm (sgntm)
adamc@40 187 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
adamc@40 188 (SgnFun (CSYMBOL, sgn1, sgn2), s (FUNCTORleft, sgn2right))
adamc@30 189
adamc@42 190 sgntm : SIG sgis END (SgnConst sgis, s (SIGleft, ENDright))
adamc@59 191 | mpath (case mpath of
adamc@61 192 [] => raise Fail "Impossible mpath parse [2]"
adamc@59 193 | [x] => SgnVar x
adamc@59 194 | m :: ms => SgnProj (m,
adamc@59 195 List.take (ms, length ms - 1),
adamc@59 196 List.nth (ms, length ms - 1)),
adamc@59 197 s (mpathleft, mpathright))
adamc@42 198 | sgntm WHERE CON SYMBOL EQ cexp (SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
adamc@42 199 | sgntm WHERE LTYPE SYMBOL EQ cexp(SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
adamc@42 200 | LPAREN sgn RPAREN (sgn)
adamc@42 201
adamc@30 202 sgi : CON SYMBOL DCOLON kind (SgiConAbs (SYMBOL, kind), s (CONleft, kindright))
adamc@30 203 | LTYPE SYMBOL (SgiConAbs (SYMBOL, (KType, s (LTYPEleft, SYMBOLright))),
adamc@30 204 s (LTYPEleft, SYMBOLright))
adamc@30 205 | CON SYMBOL EQ cexp (SgiCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@30 206 | CON SYMBOL DCOLON kind EQ cexp (SgiCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@30 207 | LTYPE SYMBOL EQ cexp (SgiCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@30 208 s (LTYPEleft, cexpright))
adamc@156 209 | DATATYPE SYMBOL EQ barOpt dcons(SgiDatatype (SYMBOL, dcons), s (DATATYPEleft, dconsright))
adamc@157 210 | DATATYPE SYMBOL EQ DATATYPE CSYMBOL DOT path
adamc@157 211 (SgiDatatypeImp (SYMBOL, CSYMBOL :: #1 path, #2 path), s (DATATYPEleft, pathright))
adamc@30 212 | VAL SYMBOL COLON cexp (SgiVal (SYMBOL, cexp), s (VALleft, cexpright))
adamc@30 213
adamc@30 214 | STRUCTURE CSYMBOL COLON sgn (SgiStr (CSYMBOL, sgn), s (STRUCTUREleft, sgnright))
adamc@59 215 | SIGNATURE CSYMBOL EQ sgn (SgiSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@42 216 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
adamc@42 217 (SgiStr (CSYMBOL1,
adamc@42 218 (SgnFun (CSYMBOL2, sgn1, sgn2), s (FUNCTORleft, sgn2right))),
adamc@42 219 s (FUNCTORleft, sgn2right))
adamc@58 220 | INCLUDE sgn (SgiInclude sgn, s (INCLUDEleft, sgnright))
adamc@88 221 | CONSTRAINT cterm TWIDDLE cterm (SgiConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
adamc@30 222
adamc@30 223 sgis : ([])
adamc@30 224 | sgi sgis (sgi :: sgis)
adamc@30 225
adamc@30 226 str : STRUCT decls END (StrConst decls, s (STRUCTleft, ENDright))
adamc@34 227 | spath (spath)
adamc@40 228 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN DARROW str
adamc@40 229 (StrFun (CSYMBOL, sgn, NONE, str), s (FUNCTORleft, strright))
adamc@40 230 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn DARROW str
adamc@40 231 (StrFun (CSYMBOL, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))
adamc@44 232 | spath LPAREN str RPAREN (StrApp (spath, str), s (spathleft, RPARENright))
adamc@34 233
adamc@34 234 spath : CSYMBOL (StrVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34 235 | spath DOT CSYMBOL (StrProj (spath, CSYMBOL), s (spathleft, CSYMBOLright))
adamc@30 236
adamc@1 237 kind : TYPE (KType, s (TYPEleft, TYPEright))
adamc@1 238 | NAME (KName, s (NAMEleft, NAMEright))
adamc@1 239 | LBRACE kind RBRACE (KRecord kind, s (LBRACEleft, RBRACEright))
adamc@1 240 | kind ARROW kind (KArrow (kind1, kind2), s (kind1left, kind2right))
adamc@1 241 | LPAREN kind RPAREN (#1 kind, s (LPARENleft, RPARENright))
adamc@82 242 | KUNIT (KUnit, s (KUNITleft, KUNITright))
adamc@18 243 | UNDERUNDER (KWild, s (UNDERUNDERleft, UNDERUNDERright))
adamc@1 244
adamc@1 245 capps : cterm (cterm)
adamc@1 246 | capps cterm (CApp (capps, cterm), s (cappsleft, ctermright))
adamc@1 247
adamc@1 248 cexp : capps (capps)
adamc@1 249 | cexp ARROW cexp (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
adamc@15 250 | SYMBOL kcolon kind ARROW cexp (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
adamc@1 251
adamc@1 252 | cexp PLUSPLUS cexp (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
adamc@1 253
adamc@67 254 | FN SYMBOL DARROW cexp (CAbs (SYMBOL, NONE, cexp), s (FNleft, cexpright))
adamc@67 255 | FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, SOME kind, cexp), s (FNleft, cexpright))
adamc@84 256 | cterm TWIDDLE cterm DARROW cexp(CDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
adamc@85 257 | cterm TWIDDLE cterm ARROW cexp (TDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
adamc@1 258
adamc@8 259 | LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))
adamc@6 260
adamc@18 261 | UNDER DCOLON kind (CWild kind, s (UNDERleft, UNDERright))
adamc@18 262
adamc@1 263 kcolon : DCOLON (Explicit)
adamc@1 264 | TCOLON (Implicit)
adamc@1 265
adamc@34 266 path : SYMBOL ([], SYMBOL)
adamc@34 267 | CSYMBOL DOT path (let val (ms, x) = path in (CSYMBOL :: ms, x) end)
adamc@34 268
adamc@156 269 cpath : CSYMBOL ([], CSYMBOL)
adamc@156 270 | CSYMBOL DOT cpath (let val (ms, x) = cpath in (CSYMBOL :: ms, x) end)
adamc@156 271
adamc@59 272 mpath : CSYMBOL ([CSYMBOL])
adamc@59 273 | CSYMBOL DOT mpath (CSYMBOL :: mpath)
adamc@59 274
adamc@1 275 cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
adamc@1 276 | LBRACK rcon RBRACK (CRecord rcon, s (LBRACKleft, RBRACKright))
adamc@83 277 | LBRACK rconn RBRACK (CRecord rconn, s (LBRACKleft, RBRACKright))
adamc@1 278 | LBRACE rcone RBRACE (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
adamc@1 279 s (LBRACEleft, RBRACEright))
adamc@1 280 | DOLLAR cterm (TRecord cterm, s (DOLLARleft, ctermright))
adamc@1 281 | HASH CSYMBOL (CName CSYMBOL, s (HASHleft, CSYMBOLright))
adamc@1 282
adamc@34 283 | path (CVar path, s (pathleft, pathright))
adamc@18 284 | UNDER (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
adamc@67 285 | FOLD (CFold, s (FOLDleft, FOLDright))
adamc@82 286 | UNIT (CUnit, s (UNITleft, UNITright))
adamc@1 287
adamc@1 288 rcon : ([])
adamc@1 289 | ident EQ cexp ([(ident, cexp)])
adamc@1 290 | ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
adamc@1 291
adamc@83 292 rconn : ident ([(ident, (CUnit, s (identleft, identright)))])
adamc@83 293 | ident COMMA rconn ((ident, (CUnit, s (identleft, identright))) :: rconn)
adamc@83 294
adamc@1 295 rcone : ([])
adamc@1 296 | ident COLON cexp ([(ident, cexp)])
adamc@1 297 | ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
adamc@1 298
adamc@1 299 ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@89 300 | path (CVar path, s (pathleft, pathright))
adamc@8 301
adamc@8 302 eapps : eterm (eterm)
adamc@8 303 | eapps eterm (EApp (eapps, eterm), s (eappsleft, etermright))
adamc@8 304 | eapps LBRACK cexp RBRACK (ECApp (eapps, cexp), s (eappsleft, RBRACKright))
adamc@8 305
adamc@8 306 eexp : eapps (eapps)
adamc@8 307 | FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
adamc@8 308 | FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
adamc@8 309 | FN SYMBOL DARROW eexp (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
adamc@93 310 | LBRACK cterm TWIDDLE cterm RBRACK DARROW eexp(EDisjoint (cterm1, cterm2, eexp), s (LBRACKleft, RBRACKright))
adamc@93 311 | FN UNIT DARROW eexp (let
adamc@93 312 val loc = s (FNleft, eexpright)
adamc@93 313 in
adamc@93 314 (EAbs ("_", SOME (TRecord (CRecord [], loc), loc), eexp), loc)
adamc@93 315 end)
adamc@8 316
adamc@8 317 | LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
adamc@149 318 | eexp MINUSMINUS cexp (ECut (eexp, cexp), s (eexpleft, cexpright))
adamc@170 319 | CASE eexp OF barOpt branch branchs (ECase (eexp, branch :: branchs), s (CASEleft, branchsright))
adamc@8 320
adamc@8 321 eterm : LPAREN eexp RPAREN (#1 eexp, s (LPARENleft, RPARENright))
adamc@8 322
adamc@34 323 | path (EVar path, s (pathleft, pathright))
adamc@156 324 | cpath (EVar cpath, s (cpathleft, cpathright))
adamc@12 325 | LBRACE rexp RBRACE (ERecord rexp, s (LBRACEleft, RBRACEright))
adamc@110 326 | UNIT (ERecord [], s (UNITleft, UNITright))
adamc@12 327
adamc@14 328 | INT (EPrim (Prim.Int INT), s (INTleft, INTright))
adamc@14 329 | FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
adamc@14 330 | STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
adamc@14 331
adamc@142 332 | path DOT ident (EField ((EVar path, s (pathleft, pathright)), ident), s (pathleft, identright))
adamc@71 333 | FOLD (EFold, s (FOLDleft, FOLDright))
adamc@71 334
adamc@91 335 | XML_BEGIN xml XML_END (xml)
adamc@91 336 | XML_BEGIN XML_END (EApp ((EVar (["Basis"], "cdata"), s (XML_BEGINleft, XML_ENDright)),
adamc@91 337 (EPrim (Prim.String ""), s (XML_BEGINleft, XML_ENDright))),
adamc@91 338 s (XML_BEGINleft, XML_ENDright))
adamc@91 339
adamc@170 340 branch : pat DARROW eexp (pat, eexp)
adamc@170 341
adamc@170 342 branchs: ([])
adamc@170 343 | BAR branch branchs (branch :: branchs)
adamc@170 344
adamc@170 345 pat : pterm (pterm)
adamc@170 346 | cpath pterm (PCon (#1 cpath, #2 cpath, SOME pterm), s (cpathleft, ptermright))
adamc@170 347
adamc@170 348 pterm : SYMBOL (PVar SYMBOL, s (SYMBOLleft, SYMBOLright))
adamc@170 349 | cpath (PCon (#1 cpath, #2 cpath, NONE), s (cpathleft, cpathright))
adamc@170 350 | UNDER (PWild, s (UNDERleft, UNDERright))
adamc@170 351 | LPAREN pat RPAREN (pat)
adamc@170 352
adamc@12 353 rexp : ([])
adamc@12 354 | ident EQ eexp ([(ident, eexp)])
adamc@12 355 | ident EQ eexp COMMA rexp ((ident, eexp) :: rexp)
adamc@91 356
adamc@141 357 xml : xmlOne xml (let
adamc@141 358 val pos = s (xmlOneleft, xmlright)
adamc@141 359 in
adamc@141 360 (EApp ((EApp (
adamc@141 361 (EVar (["Basis"], "join"), pos),
adamc@91 362 xmlOne), pos),
adamc@141 363 xml), pos)
adamc@141 364 end)
adamc@141 365 | xmlOne (xmlOne)
adamc@91 366
adamc@141 367 xmlOne : NOTAGS (EApp ((EVar (["Basis"], "cdata"), s (NOTAGSleft, NOTAGSright)),
adamc@141 368 (EPrim (Prim.String NOTAGS), s (NOTAGSleft, NOTAGSright))),
adamc@141 369 s (NOTAGSleft, NOTAGSright))
adamc@141 370 | tag DIVIDE GT (let
adamc@141 371 val pos = s (tagleft, GTright)
adamc@141 372 in
adamc@141 373 (EApp (#2 tag,
adamc@141 374 (EApp ((EVar (["Basis"], "cdata"), pos),
adamc@141 375 (EPrim (Prim.String ""), pos)),
adamc@141 376 pos)), pos)
adamc@141 377 end)
adamc@141 378
adamc@141 379 | tag GT xml END_TAG (let
adamc@141 380 val pos = s (tagleft, GTright)
adamc@141 381 in
adamc@141 382 if #1 tag = END_TAG then
adamc@141 383 if END_TAG = "lform" then
adamc@141 384 (EApp ((EVar (["Basis"], "lform"), pos),
adamc@141 385 xml), pos)
adamc@141 386 else
adamc@141 387 (EApp (#2 tag, xml), pos)
adamc@141 388 else
adamc@141 389 (ErrorMsg.errorAt pos "Begin and end tags don't match.";
adamc@141 390 (EFold, pos))
adamc@141 391 end)
adamc@141 392 | LBRACE eexp RBRACE (eexp)
adamc@92 393
adamc@141 394 tag : tagHead attrs (let
adamc@141 395 val pos = s (tagHeadleft, attrsright)
adamc@141 396 in
adamc@141 397 (#1 tagHead,
adamc@141 398 (EApp ((EApp ((EVar (["Basis"], "tag"), pos),
adamc@141 399 (ERecord attrs, pos)), pos),
adamc@141 400 (EApp (#2 tagHead,
adamc@141 401 (ERecord [], pos)), pos)),
adamc@141 402 pos))
adamc@141 403 end)
adamc@141 404
adamc@141 405 tagHead: BEGIN_TAG (let
adamc@141 406 val pos = s (BEGIN_TAGleft, BEGIN_TAGright)
adamc@141 407 in
adamc@141 408 (BEGIN_TAG,
adamc@141 409 (EVar ([], BEGIN_TAG), pos))
adamc@141 410 end)
adamc@141 411 | tagHead LBRACE cexp RBRACE (#1 tagHead, (ECApp (#2 tagHead, cexp), s (tagHeadleft, RBRACEright)))
adamc@92 412
adamc@104 413 attrs : ([])
adamc@104 414 | attr attrs (attr :: attrs)
adamc@104 415
adamc@104 416 attr : SYMBOL EQ attrv ((CName (uppercaseFirst SYMBOL), s (SYMBOLleft, SYMBOLright)), attrv)
adamc@104 417
adamc@104 418 attrv : INT (EPrim (Prim.Int INT), s (INTleft, INTright))
adamc@104 419 | FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
adamc@104 420 | STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
adamc@110 421 | LBRACE eexp RBRACE (eexp)