Mercurial > urweb

annotate src/lacweb.grm @ 24:ea15905e598d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Run a shake before reducing
author Adam Chlipala <adamc@hcoop.net>
date Sun, 08 Jun 2008 17:21:31 -0400
parents 9a578171de9e
children e6ccf961d8a3
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@1 47
adamc@1 48 %nonterm
adamc@1 49 file of decl list
adamc@1 50 | decls of decl list
adamc@1 51 | decl of decl
adamc@1 52
adamc@1 53 | kind of kind
adamc@1 54 | kcolon of explicitness
adamc@1 55
adamc@1 56 | cexp of con
adamc@1 57 | capps of con
adamc@1 58 | cterm of con
adamc@1 59 | ident of con
adamc@1 60 | rcon of (con * con) list
adamc@1 61 | rcone of (con * con) list
adamc@1 62
adamc@8 63 | eexp of exp
adamc@8 64 | eapps of exp
adamc@8 65 | eterm of exp
adamc@12 66 | rexp of (con * exp) list
adamc@8 67
adamc@1 68 %verbose (* print summary of errors *)
adamc@1 69 %pos int (* positions *)
adamc@1 70 %start file
adamc@1 71 %pure
adamc@1 72 %eop EOF
adamc@1 73 %noshift EOF
adamc@1 74
adamc@1 75 %name Lacweb
adamc@1 76
adamc@1 77 %nonassoc DARROW
adamc@1 78 %nonassoc COLON
adamc@6 79 %nonassoc DCOLON TCOLON
adamc@1 80 %right COMMA
adamc@1 81 %right ARROW LARROW
adamc@1 82 %right PLUSPLUS
adamc@1 83 %nonassoc DOLLAR
adamc@1 84 %left DOT
adamc@1 85
adamc@1 86 %%
adamc@1 87
adamc@1 88 file : decls (decls)
adamc@1 89
adamc@1 90 decls : ([])
adamc@1 91 | decl decls (decl :: decls)
adamc@1 92
adamc@1 93 decl : CON SYMBOL EQ cexp (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@1 94 | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@7 95 | LTYPE SYMBOL EQ cexp (DCon (SYMBOL, SOME (KType, s (LTYPEleft, cexpright)), cexp),
adamc@7 96 s (LTYPEleft, cexpright))
adamc@8 97 | VAL SYMBOL EQ eexp (DVal (SYMBOL, NONE, eexp), s (VALleft, eexpright))
adamc@8 98 | VAL SYMBOL COLON cexp EQ eexp (DVal (SYMBOL, SOME cexp, eexp), s (VALleft, eexpright))
adamc@1 99
adamc@1 100 kind : TYPE (KType, s (TYPEleft, TYPEright))
adamc@1 101 | NAME (KName, s (NAMEleft, NAMEright))
adamc@1 102 | LBRACE kind RBRACE (KRecord kind, s (LBRACEleft, RBRACEright))
adamc@1 103 | kind ARROW kind (KArrow (kind1, kind2), s (kind1left, kind2right))
adamc@1 104 | LPAREN kind RPAREN (#1 kind, s (LPARENleft, RPARENright))
adamc@18 105 | UNDERUNDER (KWild, s (UNDERUNDERleft, UNDERUNDERright))
adamc@1 106
adamc@1 107 capps : cterm (cterm)
adamc@1 108 | capps cterm (CApp (capps, cterm), s (cappsleft, ctermright))
adamc@1 109
adamc@1 110 cexp : capps (capps)
adamc@1 111 | cexp ARROW cexp (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
adamc@15 112 | SYMBOL kcolon kind ARROW cexp (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
adamc@1 113
adamc@1 114 | cexp PLUSPLUS cexp (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
adamc@1 115
adamc@8 116 | FN SYMBOL DCOLON kind DARROW cexp (CAbs (SYMBOL, kind, cexp), s (FNleft, cexpright))
adamc@1 117
adamc@8 118 | LPAREN cexp RPAREN DCOLON kind (CAnnot (cexp, kind), s (LPARENleft, kindright))
adamc@6 119
adamc@18 120 | UNDER DCOLON kind (CWild kind, s (UNDERleft, UNDERright))
adamc@18 121
adamc@1 122 kcolon : DCOLON (Explicit)
adamc@1 123 | TCOLON (Implicit)
adamc@1 124
adamc@1 125 cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
adamc@1 126 | LBRACK rcon RBRACK (CRecord rcon, s (LBRACKleft, RBRACKright))
adamc@1 127 | LBRACE rcone RBRACE (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
adamc@1 128 s (LBRACEleft, RBRACEright))
adamc@1 129 | DOLLAR cterm (TRecord cterm, s (DOLLARleft, ctermright))
adamc@1 130 | HASH CSYMBOL (CName CSYMBOL, s (HASHleft, CSYMBOLright))
adamc@1 131
adamc@1 132 | SYMBOL (CVar SYMBOL, s (SYMBOLleft, SYMBOLright))
adamc@18 133 | UNDER (CWild (KWild, s (UNDERleft, UNDERright)), s (UNDERleft, UNDERright))
adamc@1 134
adamc@1 135 rcon : ([])
adamc@1 136 | ident EQ cexp ([(ident, cexp)])
adamc@1 137 | ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
adamc@1 138
adamc@1 139 rcone : ([])
adamc@1 140 | ident COLON cexp ([(ident, cexp)])
adamc@1 141 | ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
adamc@1 142
adamc@1 143 ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@1 144 | SYMBOL (CVar SYMBOL, s (SYMBOLleft, SYMBOLright))
adamc@8 145
adamc@8 146 eapps : eterm (eterm)
adamc@8 147 | eapps eterm (EApp (eapps, eterm), s (eappsleft, etermright))
adamc@8 148 | eapps LBRACK cexp RBRACK (ECApp (eapps, cexp), s (eappsleft, RBRACKright))
adamc@8 149
adamc@8 150 eexp : eapps (eapps)
adamc@8 151 | FN SYMBOL kcolon kind DARROW eexp (ECAbs (kcolon, SYMBOL, kind, eexp), s (FNleft, eexpright))
adamc@8 152 | FN SYMBOL COLON cexp DARROW eexp (EAbs (SYMBOL, SOME cexp, eexp), s (FNleft, eexpright))
adamc@8 153 | FN SYMBOL DARROW eexp (EAbs (SYMBOL, NONE, eexp), s (FNleft, eexpright))
adamc@8 154
adamc@8 155 | LPAREN eexp RPAREN DCOLON cexp (EAnnot (eexp, cexp), s (LPARENleft, cexpright))
adamc@12 156 | eterm DOT ident (EField (eterm, ident), s (etermleft, identright))
adamc@8 157
adamc@8 158 eterm : LPAREN eexp RPAREN (#1 eexp, s (LPARENleft, RPARENright))
adamc@8 159
adamc@8 160 | SYMBOL (EVar SYMBOL, s (SYMBOLleft, SYMBOLright))
adamc@12 161 | LBRACE rexp RBRACE (ERecord rexp, s (LBRACEleft, RBRACEright))
adamc@12 162
adamc@14 163 | INT (EPrim (Prim.Int INT), s (INTleft, INTright))
adamc@14 164 | FLOAT (EPrim (Prim.Float FLOAT), s (FLOATleft, FLOATright))
adamc@14 165 | STRING (EPrim (Prim.String STRING), s (STRINGleft, STRINGright))
adamc@14 166
adamc@12 167 rexp : ([])
adamc@12 168 | ident EQ eexp ([(ident, eexp)])
adamc@12 169 | ident EQ eexp COMMA rexp ((ident, eexp) :: rexp)