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%{
/* $NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron 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. 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 1.12.6.1 2005/04/07 11:38:58 tron Exp $");
#endif
#endif /* not lint */
#include <unistd.h>
#include "arith.h"
#include "error.h"
#include "expand.h"
#include "var.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
%}
%option noyywrap
%%
[ \t\n] { ; }
0x[0-9a-fA-F]+ { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
0[0-7]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
[1-9][0-9]* { yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
[A-Za-z_][A-Za-z_0-9]* { char *v = lookupvar(yytext);
if (v) {
yylval = strtol(v, &v, 0);
if (*v == 0)
return ARITH_NUM;
}
error("arith: syntax error: \"%s\"", arith_startbuf);
}
"(" { 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\"", arith_startbuf); }
%%
void
arith_lex_reset() {
#ifdef YY_NEW_FILE
YY_NEW_FILE;
#endif
}
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