Mercurial > urweb

annotate src/lacweb.grm @ 1:4202f6eda946

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial parsing and pretty-printing
author Adam Chlipala <adamc@hcoop.net>
date Sat, 26 Jan 2008 12:35:32 -0500
parents
children 5c3cc348e9e6
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@1 30 open Laconic
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@1 39 | SYMBOL of string | CSYMBOL of string
adamc@1 40 | LPAREN | RPAREN | LBRACK | RBRACK | LBRACE | RBRACE
adamc@1 41 | EQ | COMMA | COLON | DCOLON | TCOLON | DOT | HASH
adamc@1 42 | CON | TYPE | NAME
adamc@1 43 | ARROW | LARROW | DARROW
adamc@1 44 | FN | PLUSPLUS | DOLLAR
adamc@1 45
adamc@1 46 %nonterm
adamc@1 47 file of decl list
adamc@1 48 | decls of decl list
adamc@1 49 | decl of decl
adamc@1 50
adamc@1 51 | kind of kind
adamc@1 52 | kcolon of explicitness
adamc@1 53
adamc@1 54 | cexp of con
adamc@1 55 | capps of con
adamc@1 56 | cterm of con
adamc@1 57 | ident of con
adamc@1 58 | rcon of (con * con) list
adamc@1 59 | rcone of (con * con) list
adamc@1 60
adamc@1 61 %verbose (* print summary of errors *)
adamc@1 62 %pos int (* positions *)
adamc@1 63 %start file
adamc@1 64 %pure
adamc@1 65 %eop EOF
adamc@1 66 %noshift EOF
adamc@1 67
adamc@1 68 %name Lacweb
adamc@1 69
adamc@1 70 %nonassoc DARROW
adamc@1 71 %nonassoc COLON
adamc@1 72 %right COMMA
adamc@1 73 %right ARROW LARROW
adamc@1 74 %right PLUSPLUS
adamc@1 75 %nonassoc DOLLAR
adamc@1 76 %left DOT
adamc@1 77
adamc@1 78 %%
adamc@1 79
adamc@1 80 file : decls (decls)
adamc@1 81
adamc@1 82 decls : ([])
adamc@1 83 | decl decls (decl :: decls)
adamc@1 84
adamc@1 85 decl : CON SYMBOL EQ cexp (DCon (SYMBOL, NONE, cexp), s (CONleft, cexpright))
adamc@1 86 | CON SYMBOL DCOLON kind EQ cexp (DCon (SYMBOL, SOME kind, cexp), s (CONleft, cexpright))
adamc@1 87
adamc@1 88 kind : TYPE (KType, s (TYPEleft, TYPEright))
adamc@1 89 | NAME (KName, s (NAMEleft, NAMEright))
adamc@1 90 | LBRACE kind RBRACE (KRecord kind, s (LBRACEleft, RBRACEright))
adamc@1 91 | kind ARROW kind (KArrow (kind1, kind2), s (kind1left, kind2right))
adamc@1 92 | LPAREN kind RPAREN (#1 kind, s (LPARENleft, RPARENright))
adamc@1 93
adamc@1 94 capps : cterm (cterm)
adamc@1 95 | capps cterm (CApp (capps, cterm), s (cappsleft, ctermright))
adamc@1 96
adamc@1 97 cexp : capps (capps)
adamc@1 98 | cexp ARROW cexp (TFun (cexp1, cexp2), s (cexp1left, cexp2right))
adamc@1 99 | SYMBOL kcolon kind ARROW cexp (TCFun (kcolon, SYMBOL, kind, cexp), s (SYMBOLleft, cexpright))
adamc@1 100
adamc@1 101 | cexp PLUSPLUS cexp (CConcat (cexp1, cexp2), s (cexp1left, cexp1right))
adamc@1 102
adamc@1 103 | FN SYMBOL kcolon kind DARROW cexp (CAbs (kcolon, SYMBOL, kind, cexp), s (FNleft, cexpright))
adamc@1 104
adamc@1 105 kcolon : DCOLON (Explicit)
adamc@1 106 | TCOLON (Implicit)
adamc@1 107
adamc@1 108 cterm : LPAREN cexp RPAREN (#1 cexp, s (LPARENleft, RPARENright))
adamc@1 109 | LBRACK rcon RBRACK (CRecord rcon, s (LBRACKleft, RBRACKright))
adamc@1 110 | LBRACE rcone RBRACE (TRecord (CRecord rcone, s (LBRACEleft, RBRACEright)),
adamc@1 111 s (LBRACEleft, RBRACEright))
adamc@1 112 | DOLLAR cterm (TRecord cterm, s (DOLLARleft, ctermright))
adamc@1 113 | HASH CSYMBOL (CName CSYMBOL, s (HASHleft, CSYMBOLright))
adamc@1 114
adamc@1 115 | SYMBOL (CVar SYMBOL, s (SYMBOLleft, SYMBOLright))
adamc@1 116
adamc@1 117 rcon : ([])
adamc@1 118 | ident EQ cexp ([(ident, cexp)])
adamc@1 119 | ident EQ cexp COMMA rcon ((ident, cexp) :: rcon)
adamc@1 120
adamc@1 121 rcone : ([])
adamc@1 122 | ident COLON cexp ([(ident, cexp)])
adamc@1 123 | ident COLON cexp COMMA rcone ((ident, cexp) :: rcone)
adamc@1 124
adamc@1 125 ident : CSYMBOL (CName CSYMBOL, s (CSYMBOLleft, CSYMBOLright))
adamc@1 126 | SYMBOL (CVar SYMBOL, s (SYMBOLleft, SYMBOLright))