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Lexer/parser hacks to share code between regular and signature file parsers
author Adam Chlipala <adamc@hcoop.net>
date Sun, 22 Jun 2008 10:53:11 -0400
parents 0a5c312de09a
children fd8a81ecd598
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@8 43 | CON | LTYPE | VAL
adamc@7 44 | TYPE | NAME
adamc@1 45 | ARROW | LARROW | DARROW
adamc@1 46 | FN | PLUSPLUS | DOLLAR
adamc@48 47 | STRUCTURE | SIGNATURE | STRUCT | SIG | END | FUNCTOR | WHERE | EXTERN
adamc@1 48
adamc@30 49 %nonterm
adamc@1 50 file of decl list
adamc@1 51 | decls of decl list
adamc@1 52 | decl of decl
adamc@1 53
adamc@30 54 | sgn of sgn
adamc@42 55 | sgntm of sgn
adamc@30 56 | sgi of sgn_item
adamc@30 57 | sgis of sgn_item list
adamc@30 58
adamc@30 59 | str of str
adamc@30 60
adamc@1 61 | kind of kind
adamc@1 62 | kcolon of explicitness
adamc@1 63
adamc@34 64 | path of string list * string
adamc@34 65 | spath of str
adamc@34 66
adamc@1 67 | cexp of con
adamc@1 68 | capps of con
adamc@1 69 | cterm of con
adamc@1 70 | ident of con
adamc@1 71 | rcon of (con * con) list
adamc@1 72 | rcone of (con * con) list
adamc@1 73
adamc@8 74 | eexp of exp
adamc@8 75 | eapps of exp
adamc@8 76 | eterm of exp
adamc@12 77 | rexp of (con * exp) list
adamc@8 78
adamc@1 79 %verbose (* print summary of errors *)
adamc@1 80 %pos int (* positions *)
adamc@1 81 %start file
adamc@1 82 %pure
adamc@1 83 %eop EOF
adamc@1 84 %noshift EOF
adamc@1 85
adamc@1 86 %name Lacweb
adamc@1 87
adamc@1 88 %nonassoc DARROW
adamc@1 89 %nonassoc COLON
adamc@6 90 %nonassoc DCOLON TCOLON
adamc@1 91 %right COMMA
adamc@1 92 %right ARROW LARROW
adamc@1 93 %right PLUSPLUS
adamc@1 94 %nonassoc DOLLAR
adamc@1 95 %left DOT
adamc@1 96
adamc@1 97 %%
adamc@1 98
adamc@1 99 file : decls (decls)
adamc@54 100 | SIG sgis ([(DSgn ("?", (SgnConst sgis, s (SIGleft, sgisright))),
adamc@54 101 s (SIGleft, sgisright))])
adamc@1 102
adamc@1 103 decls : ([])
adamc@1 104 | decl decls (decl :: decls)
adamc@1 105
adamc@1 106 decl : CON SYMBOL EQ cexp (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@1 107 | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@7 108 | LTYPE SYMBOL EQ cexp (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@7 109 s (LTYPEleft, cexpright))
adamc@8 110 | VAL SYMBOL EQ eexp (DVal (SYMBOL, NONE, eexp), s (VALleft, eexpright))
adamc@8 111 | VAL SYMBOL COLON cexp EQ eexp (DVal (SYMBOL, SOME cexp, eexp), s (VALleft, eexpright))
adamc@1 112
adamc@30 113 | SIGNATURE CSYMBOL EQ sgn (DSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@30 114 | STRUCTURE CSYMBOL EQ str (DStr (CSYMBOL, NONE, str), s (STRUCTUREleft, strright))
adamc@30 115 | STRUCTURE CSYMBOL COLON sgn EQ str (DStr (CSYMBOL, SOME sgn, str), s (STRUCTUREleft, strright))
adamc@42 116 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN EQ str
adamc@42 117 (DStr (CSYMBOL1, NONE,
adamc@42 118 (StrFun (CSYMBOL2, sgn1, NONE, str), s (FUNCTORleft, strright))),
adamc@42 119 s (FUNCTORleft, strright))
adamc@42 120 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn EQ str
adamc@42 121 (DStr (CSYMBOL1, NONE,
adamc@42 122 (StrFun (CSYMBOL2, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))),
adamc@42 123 s (FUNCTORleft, strright))
adamc@48 124 | EXTERN STRUCTURE CSYMBOL COLON sgn (DFfiStr (CSYMBOL, sgn), s (EXTERNleft, sgnright))
adamc@30 125
adamc@42 126 sgn : sgntm (sgntm)
adamc@40 127 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
adamc@40 128 (SgnFun (CSYMBOL, sgn1, sgn2), s (FUNCTORleft, sgn2right))
adamc@30 129
adamc@42 130 sgntm : SIG sgis END (SgnConst sgis, s (SIGleft, ENDright))
adamc@42 131 | CSYMBOL (SgnVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@42 132 | sgntm WHERE CON SYMBOL EQ cexp (SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
adamc@42 133 | sgntm WHERE LTYPE SYMBOL EQ cexp(SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
adamc@42 134 | LPAREN sgn RPAREN (sgn)
adamc@42 135
adamc@30 136 sgi : CON SYMBOL DCOLON kind (SgiConAbs (SYMBOL, kind), s (CONleft, kindright))
adamc@30 137 | LTYPE SYMBOL (SgiConAbs (SYMBOL, (KType, s (LTYPEleft, SYMBOLright))),
adamc@30 138 s (LTYPEleft, SYMBOLright))
adamc@30 139 | CON SYMBOL EQ cexp (SgiCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@30 140 | CON SYMBOL DCOLON kind EQ cexp (SgiCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@30 141 | LTYPE SYMBOL EQ cexp (SgiCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@30 142 s (LTYPEleft, cexpright))
adamc@30 143 | VAL SYMBOL COLON cexp (SgiVal (SYMBOL, cexp), s (VALleft, cexpright))
adamc@30 144
adamc@30 145 | STRUCTURE CSYMBOL COLON sgn (SgiStr (CSYMBOL, sgn), s (STRUCTUREleft, sgnright))
adamc@42 146 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
adamc@42 147 (SgiStr (CSYMBOL1,
adamc@42 148 (SgnFun (CSYMBOL2, sgn1, sgn2), s (FUNCTORleft, sgn2right))),
adamc@42 149 s (FUNCTORleft, sgn2right))
adamc@30 150
adamc@30 151 sgis : ([])
adamc@30 152 | sgi sgis (sgi :: sgis)
adamc@30 153
adamc@30 154 str : STRUCT decls END (StrConst decls, s (STRUCTleft, ENDright))
adamc@34 155 | spath (spath)
adamc@40 156 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN DARROW str
adamc@40 157 (StrFun (CSYMBOL, sgn, NONE, str), s (FUNCTORleft, strright))
adamc@40 158 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn DARROW str
adamc@40 159 (StrFun (CSYMBOL, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))
adamc@44 160 | spath LPAREN str RPAREN (StrApp (spath, str), s (spathleft, RPARENright))
adamc@34 161
adamc@34 162 spath : CSYMBOL (StrVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34 163 | spath DOT CSYMBOL (StrProj (spath, CSYMBOL), s (spathleft, CSYMBOLright))
adamc@30 164
adamc@1 165 kind : TYPE (KType, s (TYPEleft, TYPEright))
adamc@1 166 | NAME (KName, s (NAMEleft, NAMEright))
adamc@1 167 | LBRACE kind RBRACE (KRecord kind, s (LBRACEleft, RBRACEright))
adamc@1 168 | kind ARROW kind (KArrow (kind1, kind2), s (kind1left, kind2right))
adamc@1 169 | LPAREN kind RPAREN (#1 kind, s (LPARENleft, RPARENright))
adamc@18 170 | UNDERUNDER (KWild, s (UNDERUNDERleft, UNDERUNDERright))
adamc@1 171
adamc@1 172 capps : cterm (cterm)
adamc@1 173 | capps cterm (CApp (capps, cterm), s (cappsleft, ctermright))
adamc@1 174
adamc@1 175 cexp : capps (capps)
adamc@1 176 | cexp ARROW cexp (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
adamc@15 177 | SYMBOL kcolon kind ARROW cexp (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
adamc@1 178
adamc@1 179 | cexp PLUSPLUS cexp (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
adamc@1 180
adamc@8 181 | FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, kind, cexp), s (FNleft, cexpright))
adamc@1 182
adamc@8 183 | LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))
adamc@6 184
adamc@18 185 | UNDER DCOLON kind (CWild kind, s (UNDERleft, UNDERright))
adamc@18 186
adamc@1 187 kcolon : DCOLON (Explicit)
adamc@1 188 | TCOLON (Implicit)
adamc@1 189
adamc@34 190 path : SYMBOL ([], SYMBOL)
adamc@34 191 | CSYMBOL DOT path (let val (ms, x) = path in (CSYMBOL :: ms, x) end)
adamc@34 192
adamc@1 193 cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
adamc@1 194 | LBRACK rcon RBRACK (CRecord rcon, s (LBRACKleft, RBRACKright))
adamc@1 195 | LBRACE rcone RBRACE (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
adamc@1 196 s (LBRACEleft, RBRACEright))
adamc@1 197 | DOLLAR cterm (TRecord cterm, s (DOLLARleft, ctermright))
adamc@1 198 | HASH CSYMBOL (CName CSYMBOL, s (HASHleft, CSYMBOLright))
adamc@1 199
adamc@34 200 | path (CVar path, s (pathleft, pathright))
adamc@18 201 | UNDER (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
adamc@1 202
adamc@1 203 rcon : ([])
adamc@1 204 | ident EQ cexp ([(ident, cexp)])
adamc@1 205 | ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
adamc@1 206
adamc@1 207 rcone : ([])
adamc@1 208 | ident COLON cexp ([(ident, cexp)])
adamc@1 209 | ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
adamc@1 210
adamc@1 211 ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34 212 | SYMBOL (CVar ([], SYMBOL), s (SYMBOLleft, SYMBOLright))
adamc@8 213
adamc@8 214 eapps : eterm (eterm)
adamc@8 215 | eapps eterm (EApp (eapps, eterm), s (eappsleft, etermright))
adamc@8 216 | eapps LBRACK cexp RBRACK (ECApp (eapps, cexp), s (eappsleft, RBRACKright))
adamc@8 217
adamc@8 218 eexp : eapps (eapps)
adamc@8 219 | FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
adamc@8 220 | FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
adamc@8 221 | FN SYMBOL DARROW eexp (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
adamc@8 222
adamc@8 223 | LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
adamc@12 224 | eterm DOT ident (EField (eterm, ident), s (etermleft, identright))
adamc@8 225
adamc@8 226 eterm : LPAREN eexp RPAREN (#1 eexp, s (LPARENleft, RPARENright))
adamc@8 227
adamc@34 228 | path (EVar path, s (pathleft, pathright))
adamc@12 229 | LBRACE rexp RBRACE (ERecord rexp, s (LBRACEleft, RBRACEright))
adamc@12 230
adamc@14 231 | INT (EPrim (Prim.Int INT), s (INTleft, INTright))
adamc@14 232 | FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
adamc@14 233 | STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
adamc@14 234
adamc@12 235 rexp : ([])
adamc@12 236 | ident EQ eexp ([(ident, eexp)])
adamc@12 237 | ident EQ eexp COMMA rexp ((ident, eexp) :: rexp)