Subversion Repositories HelenOS

%{
/*  $NetBSD: arith_lex.l,v 1.10 1999/02/05 07:52:52 christos Exp $  */

/*-
 * Copyright (c) 1993
 *  The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kenneth Almquist.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by the University of
 *  California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95";
#else
__RCSID("$NetBSD: arith_lex.l,v 1.10 1999/02/05 07:52:52 christos Exp $");
#endif
#endif /* not lint */

#include <unistd.h>
#include "arith.h"
#include "error.h"
#include "expand.h"

extern int yylval;
extern char *arith_buf, *arith_startbuf;
#undef YY_INPUT
#define YY_INPUT(buf,result,max) \
    result = (*buf = *arith_buf++) ? 1 : YY_NULL;
#define YY_NO_UNPUT
%}

%%
[ \t\n] { ; }
[0-9]+  { yylval = atol(yytext); return(ARITH_NUM); }
"(" { return(ARITH_LPAREN); }
")" { return(ARITH_RPAREN); }
"||"    { return(ARITH_OR); }
"&&"    { return(ARITH_AND); }
"|" { return(ARITH_BOR); }
"^" { return(ARITH_BXOR); }
"&" { return(ARITH_BAND); }
"=="    { return(ARITH_EQ); }
"!="    { return(ARITH_NE); }
">" { return(ARITH_GT); }
">="    { return(ARITH_GE); }
"<" { return(ARITH_LT); }
"<="    { return(ARITH_LE); }
"<<"    { return(ARITH_LSHIFT); }
">>"    { return(ARITH_RSHIFT); }
"*" { return(ARITH_MUL); }
"/" { return(ARITH_DIV); }
"%" { return(ARITH_REM); }
"+" { return(ARITH_ADD); }
"-" { return(ARITH_SUB); }
"~" { return(ARITH_BNOT); }
"!" { return(ARITH_NOT); }
.   { error("arith: syntax error: \"%s\"\n", arith_startbuf); }
%%

void
arith_lex_reset() {
#ifdef YY_NEW_FILE
    YY_NEW_FILE;
#endif
}