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Explify
author Adam Chlipala <adamc@hcoop.net>
date Thu, 19 Jun 2008 10:06:59 -0400
parents 44b5405e74c7
children e3d3c2791105
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@30 47 | STRUCTURE | SIGNATURE | STRUCT | SIG | END
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@30 55 | sgi of sgn_item
adamc@30 56 | sgis of sgn_item list
adamc@30 57
adamc@30 58 | str of str
adamc@30 59
adamc@1 60 | kind of kind
adamc@1 61 | kcolon of explicitness
adamc@1 62
adamc@34 63 | path of string list * string
adamc@34 64 | spath of str
adamc@34 65
adamc@1 66 | cexp of con
adamc@1 67 | capps of con
adamc@1 68 | cterm of con
adamc@1 69 | ident of con
adamc@1 70 | rcon of (con * con) list
adamc@1 71 | rcone of (con * con) list
adamc@1 72
adamc@8 73 | eexp of exp
adamc@8 74 | eapps of exp
adamc@8 75 | eterm of exp
adamc@12 76 | rexp of (con * exp) list
adamc@8 77
adamc@1 78 %verbose (* print summary of errors *)
adamc@1 79 %pos int (* positions *)
adamc@1 80 %start file
adamc@1 81 %pure
adamc@1 82 %eop EOF
adamc@1 83 %noshift EOF
adamc@1 84
adamc@1 85 %name Lacweb
adamc@1 86
adamc@1 87 %nonassoc DARROW
adamc@1 88 %nonassoc COLON
adamc@6 89 %nonassoc DCOLON TCOLON
adamc@1 90 %right COMMA
adamc@1 91 %right ARROW LARROW
adamc@1 92 %right PLUSPLUS
adamc@1 93 %nonassoc DOLLAR
adamc@1 94 %left DOT
adamc@1 95
adamc@1 96 %%
adamc@1 97
adamc@1 98 file : decls (decls)
adamc@1 99
adamc@1 100 decls : ([])
adamc@1 101 | decl decls (decl :: decls)
adamc@1 102
adamc@1 103 decl : CON SYMBOL EQ cexp (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@1 104 | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@7 105 | LTYPE SYMBOL EQ cexp (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@7 106 s (LTYPEleft, cexpright))
adamc@8 107 | VAL SYMBOL EQ eexp (DVal (SYMBOL, NONE, eexp), s (VALleft, eexpright))
adamc@8 108 | VAL SYMBOL COLON cexp EQ eexp (DVal (SYMBOL, SOME cexp, eexp), s (VALleft, eexpright))
adamc@1 109
adamc@30 110 | SIGNATURE CSYMBOL EQ sgn (DSgn (CSYMBOL, sgn), s (SIGNATUREleft, sgnright))
adamc@30 111 | STRUCTURE CSYMBOL EQ str (DStr (CSYMBOL, NONE, str), s (STRUCTUREleft, strright))
adamc@30 112 | STRUCTURE CSYMBOL COLON sgn EQ str (DStr (CSYMBOL, SOME sgn, str), s (STRUCTUREleft, strright))
adamc@30 113
adamc@30 114 sgn : SIG sgis END (SgnConst sgis, s (SIGleft, ENDright))
adamc@30 115 | CSYMBOL (SgnVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@30 116
adamc@30 117 sgi : CON SYMBOL DCOLON kind (SgiConAbs (SYMBOL, kind), s (CONleft, kindright))
adamc@30 118 | LTYPE SYMBOL (SgiConAbs (SYMBOL, (KType, s (LTYPEleft, SYMBOLright))),
adamc@30 119 s (LTYPEleft, SYMBOLright))
adamc@30 120 | CON SYMBOL EQ cexp (SgiCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@30 121 | CON SYMBOL DCOLON kind EQ cexp (SgiCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@30 122 | LTYPE SYMBOL EQ cexp (SgiCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@30 123 s (LTYPEleft, cexpright))
adamc@30 124 | VAL SYMBOL COLON cexp (SgiVal (SYMBOL, cexp), s (VALleft, cexpright))
adamc@30 125
adamc@30 126 | STRUCTURE CSYMBOL COLON sgn (SgiStr (CSYMBOL, sgn), s (STRUCTUREleft, sgnright))
adamc@30 127
adamc@30 128 sgis : ([])
adamc@30 129 | sgi sgis (sgi :: sgis)
adamc@30 130
adamc@30 131 str : STRUCT decls END (StrConst decls, s (STRUCTleft, ENDright))
adamc@34 132 | spath (spath)
adamc@34 133
adamc@34 134 spath : CSYMBOL (StrVar CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34 135 | spath DOT CSYMBOL (StrProj (spath, CSYMBOL), s (spathleft, CSYMBOLright))
adamc@30 136
adamc@1 137 kind : TYPE (KType, s (TYPEleft, TYPEright))
adamc@1 138 | NAME (KName, s (NAMEleft, NAMEright))
adamc@1 139 | LBRACE kind RBRACE (KRecord kind, s (LBRACEleft, RBRACEright))
adamc@1 140 | kind ARROW kind (KArrow (kind1, kind2), s (kind1left, kind2right))
adamc@1 141 | LPAREN kind RPAREN (#1 kind, s (LPARENleft, RPARENright))
adamc@18 142 | UNDERUNDER (KWild, s (UNDERUNDERleft, UNDERUNDERright))
adamc@1 143
adamc@1 144 capps : cterm (cterm)
adamc@1 145 | capps cterm (CApp (capps, cterm), s (cappsleft, ctermright))
adamc@1 146
adamc@1 147 cexp : capps (capps)
adamc@1 148 | cexp ARROW cexp (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
adamc@15 149 | SYMBOL kcolon kind ARROW cexp (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
adamc@1 150
adamc@1 151 | cexp PLUSPLUS cexp (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
adamc@1 152
adamc@8 153 | FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, kind, cexp), s (FNleft, cexpright))
adamc@1 154
adamc@8 155 | LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))
adamc@6 156
adamc@18 157 | UNDER DCOLON kind (CWild kind, s (UNDERleft, UNDERright))
adamc@18 158
adamc@1 159 kcolon : DCOLON (Explicit)
adamc@1 160 | TCOLON (Implicit)
adamc@1 161
adamc@34 162 path : SYMBOL ([], SYMBOL)
adamc@34 163 | CSYMBOL DOT path (let val (ms, x) = path in (CSYMBOL :: ms, x) end)
adamc@34 164
adamc@1 165 cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
adamc@1 166 | LBRACK rcon RBRACK (CRecord rcon, s (LBRACKleft, RBRACKright))
adamc@1 167 | LBRACE rcone RBRACE (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
adamc@1 168 s (LBRACEleft, RBRACEright))
adamc@1 169 | DOLLAR cterm (TRecord cterm, s (DOLLARleft, ctermright))
adamc@1 170 | HASH CSYMBOL (CName CSYMBOL, s (HASHleft, CSYMBOLright))
adamc@1 171
adamc@34 172 | path (CVar path, s (pathleft, pathright))
adamc@18 173 | UNDER (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
adamc@1 174
adamc@1 175 rcon : ([])
adamc@1 176 | ident EQ cexp ([(ident, cexp)])
adamc@1 177 | ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
adamc@1 178
adamc@1 179 rcone : ([])
adamc@1 180 | ident COLON cexp ([(ident, cexp)])
adamc@1 181 | ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
adamc@1 182
adamc@1 183 ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@34 184 | SYMBOL (CVar ([], SYMBOL), s (SYMBOLleft, SYMBOLright))
adamc@8 185
adamc@8 186 eapps : eterm (eterm)
adamc@8 187 | eapps eterm (EApp (eapps, eterm), s (eappsleft, etermright))
adamc@8 188 | eapps LBRACK cexp RBRACK (ECApp (eapps, cexp), s (eappsleft, RBRACKright))
adamc@8 189
adamc@8 190 eexp : eapps (eapps)
adamc@8 191 | FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
adamc@8 192 | FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
adamc@8 193 | FN SYMBOL DARROW eexp (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
adamc@8 194
adamc@8 195 | LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
adamc@12 196 | eterm DOT ident (EField (eterm, ident), s (etermleft, identright))
adamc@8 197
adamc@8 198 eterm : LPAREN eexp RPAREN (#1 eexp, s (LPARENleft, RPARENright))
adamc@8 199
adamc@34 200 | path (EVar path, s (pathleft, pathright))
adamc@12 201 | LBRACE rexp RBRACE (ERecord rexp, s (LBRACEleft, RBRACEright))
adamc@12 202
adamc@14 203 | INT (EPrim (Prim.Int INT), s (INTleft, INTright))
adamc@14 204 | FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
adamc@14 205 | STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
adamc@14 206
adamc@12 207 rexp : ([])
adamc@12 208 | ident EQ eexp ([(ident, eexp)])
adamc@12 209 | ident EQ eexp COMMA rexp ((ident, eexp) :: rexp)