gforth: gforth/vmgen-ex/mini.l

1 :	anton	1.1	/* front-end scanner for vmgen example
2 :
3 :			Copyright (C) 2001 Free Software Foundation, Inc.
4 :
5 :			This file is part of Gforth.
6 :
7 :			Gforth 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.
11 :
12 :			This program 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.
16 :
17 :			You should have received a copy of the GNU General Public License
18 :			along with this program; if not, write to the Free Software
19 :			Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20 :			*/
21 :
22 :			/* %option yylineno (flex option, implied by flex -l) */
23 :
24 :			%%
25 :			[-();,+*&\|<=!] return yytext[0];
26 :			:= return BECOMES;
27 :			func return FUNC;
28 :			return return RETURN;
29 :			end return END;
30 :			var return VAR;
31 :			if return IF;
32 :			then return THEN;
33 :			else return ELSE;
34 :			while return WHILE;
35 :			do return DO;
36 :			print return PRINT;
37 :			[0-9]+ { yylval.num=strtol(yytext,NULL,10); return NUM; }
38 :			[a-zA-Z\_][a-zA-Z0-9\_]* { yylval.string=strdup(yytext); return IDENT; }
39 :			[ \t\n] ;
40 :			[/][/].* ;
41 :			. yyerror("illegal character"); exit(1);
42 :			%%