/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2001 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#ifndef _LIBC_PORT_I18N_PLURAL_PARSER_H
#define _LIBC_PORT_I18N_PLURAL_PARSER_H

#ifdef  __cplusplus
extern "C" {
#endif

#define PEEK_TOKEN      0
#define GET_TOKEN       1

#define NARY    0
#define UNARY   1
#define BINARY  2
#define TRINARY 3

#define T_NULL  0x00000000
#define T_INIT  0x00000001
#define T_EXP   0x00000002
#define T_NUM   0x00000003
#define T_VAR   0x00000004
#define T_CONDC 0x00000005
#define T_CONDQ 0x00000006
#define T_LOR   0x00000007
#define T_LAND  0x00000008
#define T_EQ    0x00000009
#define T_NEQ   0x0000000a
#define T_GT    0x0000000b
#define T_LT    0x0000000c
#define T_GE    0x0000000d
#define T_LE    0x0000000e
#define T_ADD   0x0000000f
#define T_SUB   0x00000010
#define T_MUL   0x00000011
#define T_DIV   0x00000012
#define T_MOD   0x00000013
#define T_LNOT  0x00000014
#define T_LPAR  0x00000015
#define T_RPAR  0x00000016
#define T_ERR   0x00000017

#define GETTYPE(op)     ((op) & 0x000fffff)
#define GETPRIO(op)     (((op) & 0x0ff00000) >> 20)
#define GETOPNUM(op)    (((op) & 0xf0000000) >> 28)

#define MAX_STACK_SIZE  128

struct expr {
        unsigned int    op;             /* operator */
        unsigned int    num;    /* T_NUM */
        unsigned int    flag;   /* flag for the previous op */
        struct expr     *nodes[3];      /* operands */
};

struct stack {
        int     index;
        struct expr     **ptr;
};

#ifdef  __cplusplus
}
#endif

#endif  /* _LIBC_PORT_I18N_PLURAL_PARSER_H */