/*      $NetBSD: arith_tokens.h,v 1.3 2017/07/24 13:21:14 kre Exp $     */

/*-
 * Copyright (c) 1993
 *      The Regents of the University of California.  All rights reserved.
 * Copyright (c) 2007
 *      Herbert Xu <herbert@gondor.apana.org.au>.  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.
 *
 * From FreeBSD who obtained it from dash (modified both times.)
 */

/*
 * Tokens returned from arith_token()
 *
 * Caution, values are not arbitrary.
 */

#define ARITH_BAD       0

#define ARITH_ASS       1

#define ARITH_OR        2
#define ARITH_AND       3
#define ARITH_NUM       5
#define ARITH_VAR       6
#define ARITH_NOT       7

#define ARITH_BINOP_MIN 8

#define ARITH_LE        8
#define ARITH_GE        9
#define ARITH_LT        10
#define ARITH_GT        11
#define ARITH_EQ        12      /* Must be ARITH_ASS + ARITH_ASS_GAP */

#define ARITH_ASS_BASE  13

#define ARITH_REM       13
#define ARITH_BAND      14
#define ARITH_LSHIFT    15
#define ARITH_RSHIFT    16
#define ARITH_MUL       17
#define ARITH_ADD       18
#define ARITH_BOR       19
#define ARITH_SUB       20
#define ARITH_BXOR      21
#define ARITH_DIV       22

#define ARITH_NE        23

#define ARITH_BINOP_MAX 24

#define ARITH_ASS_MIN   ARITH_BINOP_MAX
#define ARITH_ASS_GAP   (ARITH_ASS_MIN - ARITH_ASS_BASE)

#define ARITH_REMASS    (ARITH_ASS_GAP + ARITH_REM)
#define ARITH_BANDASS   (ARITH_ASS_GAP + ARITH_BAND)
#define ARITH_LSHIFTASS (ARITH_ASS_GAP + ARITH_LSHIFT)
#define ARITH_RSHIFTASS (ARITH_ASS_GAP + ARITH_RSHIFT)
#define ARITH_MULASS    (ARITH_ASS_GAP + ARITH_MUL)
#define ARITH_ADDASS    (ARITH_ASS_GAP + ARITH_ADD)
#define ARITH_BORASS    (ARITH_ASS_GAP + ARITH_BOR)
#define ARITH_SUBASS    (ARITH_ASS_GAP + ARITH_SUB)
#define ARITH_BXORASS   (ARITH_ASS_GAP + ARITH_BXOR)
#define ARITH_DIVASS    (ARITH_ASS_GAP + ARITH_BXOR)

#define ARITH_ASS_MAX   34

#define ARITH_LPAREN    34
#define ARITH_RPAREN    35
#define ARITH_BNOT      36
#define ARITH_QMARK     37
#define ARITH_COLON     38
#define ARITH_INCR      39
#define ARITH_DECR      40
#define ARITH_COMMA     41

/*
 * Globals shared between arith parser, and lexer
 */

extern const char *arith_buf;

union a_token_val {
        intmax_t val;
        char *name;
};

extern union a_token_val a_t_val;

extern int arith_lno, arith_var_lno;

int arith_token(void);