mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
137 lines
4.0 KiB
Plaintext
137 lines
4.0 KiB
Plaintext
%{
|
|
/*-
|
|
* 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.
|
|
*/
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95";
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <string.h>
|
|
|
|
#include "shell.h"
|
|
#include "y.tab.h"
|
|
#include "error.h"
|
|
#include "memalloc.h"
|
|
#include "var.h"
|
|
|
|
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] { ; }
|
|
|
|
0x[a-fA-F0-9]+ {
|
|
yylval.l_value = strtoarith_t(yytext, NULL, 16);
|
|
return ARITH_NUM;
|
|
}
|
|
|
|
0[0-7]+ {
|
|
yylval.l_value = strtoarith_t(yytext, NULL, 8);
|
|
return ARITH_NUM;
|
|
}
|
|
|
|
[0-9]+ {
|
|
yylval.l_value = strtoarith_t(yytext, NULL, 10);
|
|
return ARITH_NUM;
|
|
}
|
|
|
|
[A-Za-z][A-Za-z0-9_]* {
|
|
/*
|
|
* If variable doesn't exist, we should initialize
|
|
* it to zero.
|
|
*/
|
|
char *temp;
|
|
if (lookupvar(yytext) == NULL)
|
|
setvarsafe(yytext, "0", 0);
|
|
temp = (char *)ckmalloc(strlen(yytext) + 1);
|
|
yylval.s_value = strcpy(temp, yytext);
|
|
|
|
return ARITH_VAR;
|
|
}
|
|
|
|
"(" { 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; }
|
|
"=" { return ARITH_ASSIGN; }
|
|
"+=" { return ARITH_ADDASSIGN; }
|
|
"-=" { return ARITH_SUBASSIGN; }
|
|
"*=" { return ARITH_MULASSIGN; }
|
|
"/=" { return ARITH_DIVASSIGN; }
|
|
"%=" { return ARITH_REMASSIGN; }
|
|
">>=" { return ARITH_RSHASSIGN; }
|
|
"<<=" { return ARITH_LSHASSIGN; }
|
|
"&=" { return ARITH_BANDASSIGN; }
|
|
"^=" { return ARITH_BXORASSIGN; }
|
|
"|=" { return ARITH_BORASSIGN; }
|
|
. {
|
|
error("arith: syntax error: \"%s\"\n", arith_startbuf);
|
|
}
|
|
%%
|
|
|
|
void
|
|
arith_lex_reset(void)
|
|
{
|
|
YY_NEW_FILE;
|
|
}
|