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path: root/2004/i/nono/src/config/config_lex.ll
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%{
/* nono - programme du robot 2004. {{{
 *
 * Copyright (C) 2004 Nicolas Schodet
 *
 * Robot APB Team/Efrei 2004.
 *        Web: http://assos.efrei.fr/robot/
 *      Email: robot AT efrei DOT fr
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * }}} */

#include "config/config_lex.h"

config_yytype config_yylval;
config_wrap_f wrap_f = 0;
void *wrap_data = 0;

%}

ID	[_a-zA-Z][-_a-zA-Z0-9]*

NUM	[-+]?[0-9]+

HNUM	"0x"[0-9a-fzA-F]+

BNUM	"0b"[01]+

FLOAT	[-+]?[0-9]*"."[0-9]*

STRING	\"[^\n\"]*\"

%option nounput
%option prefix="config_yy"
%option yylineno

%%

{FLOAT}	{
    config_yylval.fl = strtod (config_yytext, 0);
    return FLOAT;
}

{BNUM}	{
    config_yylval.num = strtol (config_yytext + 2, 0, 2);
    return NUM;
}

{HNUM}	{
    config_yylval.num = strtol (config_yytext + 2, 0, 16);
    return NUM;
}

{NUM}	{
    config_yylval.num = strtol (config_yytext, 0, 10);
    return NUM;
}

"true"	{ config_yylval.boolean = true; return BOOL; }
"false"	{ config_yylval.boolean = false; return BOOL; }

{ID}        {
	config_yylval.id = config_yytext;
	return ID;
}

{STRING}	{
	config_yytext[config_yyleng - 1] = '\0';
	config_yylval.str = config_yytext + 1;
	return STRING;
}

"#".*		/* Commentaires. */

[ \t\n]+	/* Rien � battre. */

.	return ERR;

%%

// Ouvre un fichier pour l'utiliser avec le lexer.
int
config_yyopen (const char *filename, config_wrap_f wrap, void *data)
{
	if (config_yyin && config_yyin != stdin)
		fclose (config_yyin);
	config_yyin = fopen (filename, "r");
	if (!config_yyin) return -1;
	wrap_f = wrap;
	wrap_data = data;
	return 0;
}

// Ferme le fichier du lexer.
void
config_yyclose (void)
{
	if (config_yyin && config_yyin != stdin)
		fclose (config_yyin);
	wrap_f = 0;
	wrap_data = 0;
}

// Appel� par flex pour changer de fichier.
int
config_yywrap (void)
{
	if (wrap_f)
		return wrap_f (wrap_data) ? 0 : 1;
	else
		return 1;
}

// vim: ft=lex