1 (* Copyright (C) 2000, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
26 (******************************************************************************)
30 (* Ferruccio Guidi <fguidi@cs.unibo.it> *)
34 (******************************************************************************)
41 let out s = if debug then prerr_endline s
44 let SPC = [' ' '\t' '\n']+
45 let ALPHA = ['A'-'Z' 'a'-'z' '_']
47 let IDEN = ALPHA (NUM | ALPHA)*
48 let QSTR = [^ '"' '\\']+
50 rule comm_token = parse
51 | "(*" { comm_token lexbuf; comm_token lexbuf }
53 | ['*' '('] { comm_token lexbuf }
54 | [^ '*' '(']* { comm_token lexbuf }
55 and string_token = parse
57 | '\\' _ { STR (String.sub (Lexing.lexeme lexbuf) 1 1) }
58 | QSTR { STR (Lexing.lexeme lexbuf) }
60 and spec_token = parse
61 | "(*" { comm_token lexbuf; spec_token lexbuf }
62 | SPC { spec_token lexbuf }
63 | '"' { let str = qstr string_token lexbuf in
64 out ("STR " ^ str); STR str }
65 | '{' { out "LC"; LC }
66 | '}' { out "RC"; RC }
67 | ',' { out "CM"; CM }
68 | '$' { out "DL"; DL }
69 | "mustobj" { out "MOBJ" ; MOBJ }
70 | "mustsort" { out "MSORT" ; MSORT }
71 | "mustrel" { out "MREL" ; MREL }
72 | "onlyobj" { out "OOBJ" ; OOBJ }
73 | "onlysort" { out "OSORT" ; OSORT }
74 | "onlyrel" { out "OREL" ; OREL }
75 | "universe" { out "UNIV" ; UNIV }
76 | IDEN { let id = Lexing.lexeme lexbuf in
77 out ("ID " ^ id); ID id }