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Constraints in modules
author Adam Chlipala <adamc@hcoop.net>
date Tue, 01 Jul 2008 15:58:02 -0400
parents 1f85890c9846
children d3ee072fa609
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@82 43 | CON | LTYPE | VAL | FOLD | UNIT | KUNIT
adamc@7 44 | TYPE | NAME
adamc@1 45 | ARROW | LARROW | DARROW
adamc@84 46 | FN | PLUSPLUS | DOLLAR | TWIDDLE
adamc@88 47 | STRUCTURE | SIGNATURE | STRUCT | SIG | END | FUNCTOR | WHERE | EXTERN
adamc@88 48 | INCLUDE | OPEN | CONSTRAINT | CONSTRAINTS
adamc@1 49
adamc@30 50 %nonterm
adamc@1 51 file of decl list
adamc@1 52 | decls of decl list
adamc@1 53 | decl of decl
adamc@1 54
adamc@30 55 | sgn of sgn
adamc@42 56 | sgntm of sgn
adamc@30 57 | sgi of sgn_item
adamc@30 58 | sgis of sgn_item list
adamc@30 59
adamc@30 60 | str of str
adamc@30 61
adamc@1 62 | kind of kind
adamc@1 63 | kcolon of explicitness
adamc@1 64
adamc@34 65 | path of string list * string
adamc@34 66 | spath of str
adamc@59 67 | mpath of string list
adamc@34 68
adamc@1 69 | cexp of con
adamc@1 70 | capps of con
adamc@1 71 | cterm of con
adamc@1 72 | ident of con
adamc@1 73 | rcon of (con * con) list
adamc@83 74 | rconn of (con * con) list
adamc@1 75 | rcone of (con * con) list
adamc@1 76
adamc@8 77 | eexp of exp
adamc@8 78 | eapps of exp
adamc@8 79 | eterm of exp
adamc@12 80 | rexp of (con * exp) list
adamc@8 81
adamc@1 82 %verbose (* print summary of errors *)
adamc@1 83 %pos int (* positions *)
adamc@1 84 %start file
adamc@1 85 %pure
adamc@1 86 %eop EOF
adamc@1 87 %noshift EOF
adamc@1 88
adamc@1 89 %name Lacweb
adamc@1 90
adamc@1 91 %nonassoc DARROW
adamc@1 92 %nonassoc COLON
adamc@6 93 %nonassoc DCOLON TCOLON
adamc@1 94 %right COMMA
adamc@1 95 %right ARROW LARROW
adamc@1 96 %right PLUSPLUS
adamc@84 97 %nonassoc TWIDDLE
adamc@1 98 %nonassoc DOLLAR
adamc@1 99 %left DOT
adamc@1 100
adamc@1 101 %%
adamc@1 102
adamc@1 103 file : decls (decls)
adamc@54 104 | SIG sgis ([(DSgn ("?", (SgnConst sgis, s (SIGleft, sgisright))),
adamc@54 105 s (SIGleft, sgisright))])
adamc@1 106
adamc@1 107 decls : ([])
adamc@1 108 | decl decls (decl :: decls)
adamc@1 109
adamc@1 110 decl : CON SYMBOL EQ cexp (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@1 111 | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@7 112 | LTYPE SYMBOL EQ cexp (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@7 113 s (LTYPEleft, cexpright))
adamc@8 114 | VAL SYMBOL EQ eexp (DVal (SYMBOL, NONE, eexp), s (VALleft, eexpright))
adamc@8 115 | VAL SYMBOL COLON cexp EQ eexp (DVal (SYMBOL, SOME cexp, eexp), s (VALleft, eexpright))
adamc@1 116
adamc@30 117 | SIGNATURE CSYMBOL EQ sgn (DSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@30 118 | STRUCTURE CSYMBOL EQ str (DStr (CSYMBOL, NONE, str), s (STRUCTUREleft, strright))
adamc@30 119 | STRUCTURE CSYMBOL COLON sgn EQ str (DStr (CSYMBOL, SOME sgn, str), s (STRUCTUREleft, strright))
adamc@42 120 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN EQ str
adamc@42 121 (DStr (CSYMBOL1, NONE,
adamc@42 122 (StrFun (CSYMBOL2, sgn1, NONE, str), s (FUNCTORleft, strright))),
adamc@42 123 s (FUNCTORleft, strright))
adamc@42 124 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn EQ str
adamc@42 125 (DStr (CSYMBOL1, NONE,
adamc@42 126 (StrFun (CSYMBOL2, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))),
adamc@42 127 s (FUNCTORleft, strright))
adamc@48 128 | EXTERN STRUCTURE CSYMBOL COLON sgn (DFfiStr (CSYMBOL, sgn), s (EXTERNleft, sgnright))
adamc@61 129 | OPEN mpath (case mpath of
adamc@61 130 [] => raise Fail "Impossible mpath parse [1]"
adamc@61 131 | m :: ms => (DOpen (m, ms), s (OPENleft, mpathright)))
adamc@88 132 | OPEN CONSTRAINTS mpath (case mpath of
adamc@88 133 [] => raise Fail "Impossible mpath parse [3]"
adamc@88 134 | m :: ms => (DOpenConstraints (m, ms), s (OPENleft, mpathright)))
adamc@88 135 | CONSTRAINT cterm TWIDDLE cterm (DConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
adamc@30 136
adamc@42 137 sgn : sgntm (sgntm)
adamc@40 138 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
adamc@40 139 (SgnFun (CSYMBOL, sgn1, sgn2), s (FUNCTORleft, sgn2right))
adamc@30 140
adamc@42 141 sgntm : SIG sgis END (SgnConst sgis, s (SIGleft, ENDright))
adamc@59 142 | mpath (case mpath of
adamc@61 143 [] => raise Fail "Impossible mpath parse [2]"
adamc@59 144 | [x] => SgnVar x
adamc@59 145 | m :: ms => SgnProj (m,
adamc@59 146 List.take (ms, length ms - 1),
adamc@59 147 List.nth (ms, length ms - 1)),
adamc@59 148 s (mpathleft, mpathright))
adamc@42 149 | sgntm WHERE CON SYMBOL EQ cexp (SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
adamc@42 150 | sgntm WHERE LTYPE SYMBOL EQ cexp(SgnWhere (sgntm, SYMBOL, cexp), s (sgntmleft, cexpright))
adamc@42 151 | LPAREN sgn RPAREN (sgn)
adamc@42 152
adamc@30 153 sgi : CON SYMBOL DCOLON kind (SgiConAbs (SYMBOL, kind), s (CONleft, kindright))
adamc@30 154 | LTYPE SYMBOL (SgiConAbs (SYMBOL, (KType, s (LTYPEleft, SYMBOLright))),
adamc@30 155 s (LTYPEleft, SYMBOLright))
adamc@30 156 | CON SYMBOL EQ cexp (SgiCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@30 157 | CON SYMBOL DCOLON kind EQ cexp (SgiCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@30 158 | LTYPE SYMBOL EQ cexp (SgiCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@30 159 s (LTYPEleft, cexpright))
adamc@30 160 | VAL SYMBOL COLON cexp (SgiVal (SYMBOL, cexp), s (VALleft, cexpright))
adamc@30 161
adamc@30 162 | STRUCTURE CSYMBOL COLON sgn (SgiStr (CSYMBOL, sgn), s (STRUCTUREleft, sgnright))
adamc@59 163 | SIGNATURE CSYMBOL EQ sgn (SgiSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@42 164 | FUNCTOR CSYMBOL LPAREN CSYMBOL COLON sgn RPAREN COLON sgn
adamc@42 165 (SgiStr (CSYMBOL1,
adamc@42 166 (SgnFun (CSYMBOL2, sgn1, sgn2), s (FUNCTORleft, sgn2right))),
adamc@42 167 s (FUNCTORleft, sgn2right))
adamc@58 168 | INCLUDE sgn (SgiInclude sgn, s (INCLUDEleft, sgnright))
adamc@88 169 | CONSTRAINT cterm TWIDDLE cterm (SgiConstraint (cterm1, cterm2), s (CONSTRAINTleft, ctermright))
adamc@30 170
adamc@30 171 sgis : ([])
adamc@30 172 | sgi sgis (sgi :: sgis)
adamc@30 173
adamc@30 174 str : STRUCT decls END (StrConst decls, s (STRUCTleft, ENDright))
adamc@34 175 | spath (spath)
adamc@40 176 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN DARROW str
adamc@40 177 (StrFun (CSYMBOL, sgn, NONE, str), s (FUNCTORleft, strright))
adamc@40 178 | FUNCTOR LPAREN CSYMBOL COLON sgn RPAREN COLON sgn DARROW str
adamc@40 179 (StrFun (CSYMBOL, sgn1, SOME sgn2, str), s (FUNCTORleft, strright))
adamc@44 180 | spath LPAREN str RPAREN (StrApp (spath, str), s (spathleft, RPARENright))
adamc@34 181
adamc@34 182 spath : CSYMBOL (StrVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34 183 | spath DOT CSYMBOL (StrProj (spath, CSYMBOL), s (spathleft, CSYMBOLright))
adamc@30 184
adamc@1 185 kind : TYPE (KType, s (TYPEleft, TYPEright))
adamc@1 186 | NAME (KName, s (NAMEleft, NAMEright))
adamc@1 187 | LBRACE kind RBRACE (KRecord kind, s (LBRACEleft, RBRACEright))
adamc@1 188 | kind ARROW kind (KArrow (kind1, kind2), s (kind1left, kind2right))
adamc@1 189 | LPAREN kind RPAREN (#1 kind, s (LPARENleft, RPARENright))
adamc@82 190 | KUNIT (KUnit, s (KUNITleft, KUNITright))
adamc@18 191 | UNDERUNDER (KWild, s (UNDERUNDERleft, UNDERUNDERright))
adamc@1 192
adamc@1 193 capps : cterm (cterm)
adamc@1 194 | capps cterm (CApp (capps, cterm), s (cappsleft, ctermright))
adamc@1 195
adamc@1 196 cexp : capps (capps)
adamc@1 197 | cexp ARROW cexp (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
adamc@15 198 | SYMBOL kcolon kind ARROW cexp (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
adamc@1 199
adamc@1 200 | cexp PLUSPLUS cexp (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
adamc@1 201
adamc@67 202 | FN SYMBOL DARROW cexp (CAbs (SYMBOL, NONE, cexp), s (FNleft, cexpright))
adamc@67 203 | FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, SOME kind, cexp), s (FNleft, cexpright))
adamc@84 204 | cterm TWIDDLE cterm DARROW cexp(CDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
adamc@85 205 | cterm TWIDDLE cterm ARROW cexp (TDisjoint (cterm1, cterm2, cexp), s (cterm1left, cexpright))
adamc@1 206
adamc@8 207 | LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))
adamc@6 208
adamc@18 209 | UNDER DCOLON kind (CWild kind, s (UNDERleft, UNDERright))
adamc@18 210
adamc@1 211 kcolon : DCOLON (Explicit)
adamc@1 212 | TCOLON (Implicit)
adamc@1 213
adamc@34 214 path : SYMBOL ([], SYMBOL)
adamc@34 215 | CSYMBOL DOT path (let val (ms, x) = path in (CSYMBOL :: ms, x) end)
adamc@34 216
adamc@59 217 mpath : CSYMBOL ([CSYMBOL])
adamc@59 218 | CSYMBOL DOT mpath (CSYMBOL :: mpath)
adamc@59 219
adamc@1 220 cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
adamc@1 221 | LBRACK rcon RBRACK (CRecord rcon, s (LBRACKleft, RBRACKright))
adamc@83 222 | LBRACK rconn RBRACK (CRecord rconn, s (LBRACKleft, RBRACKright))
adamc@1 223 | LBRACE rcone RBRACE (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
adamc@1 224 s (LBRACEleft, RBRACEright))
adamc@1 225 | DOLLAR cterm (TRecord cterm, s (DOLLARleft, ctermright))
adamc@1 226 | HASH CSYMBOL (CName CSYMBOL, s (HASHleft, CSYMBOLright))
adamc@1 227
adamc@34 228 | path (CVar path, s (pathleft, pathright))
adamc@18 229 | UNDER (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
adamc@67 230 | FOLD (CFold, s (FOLDleft, FOLDright))
adamc@82 231 | UNIT (CUnit, s (UNITleft, UNITright))
adamc@1 232
adamc@1 233 rcon : ([])
adamc@1 234 | ident EQ cexp ([(ident, cexp)])
adamc@1 235 | ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
adamc@1 236
adamc@83 237 rconn : ident ([(ident, (CUnit, s (identleft, identright)))])
adamc@83 238 | ident COMMA rconn ((ident, (CUnit, s (identleft, identright))) :: rconn)
adamc@83 239
adamc@1 240 rcone : ([])
adamc@1 241 | ident COLON cexp ([(ident, cexp)])
adamc@1 242 | ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
adamc@1 243
adamc@1 244 ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34 245 | SYMBOL (CVar ([], SYMBOL), s (SYMBOLleft, SYMBOLright))
adamc@8 246
adamc@8 247 eapps : eterm (eterm)
adamc@8 248 | eapps eterm (EApp (eapps, eterm), s (eappsleft, etermright))
adamc@8 249 | eapps LBRACK cexp RBRACK (ECApp (eapps, cexp), s (eappsleft, RBRACKright))
adamc@8 250
adamc@8 251 eexp : eapps (eapps)
adamc@8 252 | FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
adamc@8 253 | FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
adamc@8 254 | FN SYMBOL DARROW eexp (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
adamc@85 255 | FN cterm TWIDDLE cterm DARROW eexp(EDisjoint (cterm1, cterm2, eexp), s (cterm1left, eexpright))
adamc@8 256
adamc@8 257 | LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
adamc@12 258 | eterm DOT ident (EField (eterm, ident), s (etermleft, identright))
adamc@8 259
adamc@8 260 eterm : LPAREN eexp RPAREN (#1 eexp, s (LPARENleft, RPARENright))
adamc@8 261
adamc@34 262 | path (EVar path, s (pathleft, pathright))
adamc@12 263 | LBRACE rexp RBRACE (ERecord rexp, s (LBRACEleft, RBRACEright))
adamc@12 264
adamc@14 265 | INT (EPrim (Prim.Int INT), s (INTleft, INTright))
adamc@14 266 | FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
adamc@14 267 | STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
adamc@14 268
adamc@71 269 | FOLD (EFold, s (FOLDleft, FOLDright))
adamc@71 270
adamc@12 271 rexp : ([])
adamc@12 272 | ident EQ eexp ([(ident, eexp)])
adamc@12 273 | ident EQ eexp COMMA rexp ((ident, eexp) :: rexp)