Zabbix

/*

** Zabbix

** Copyright (C) 2001-2022 Zabbix SIA

**

** This program is free software; you can redistribute it and/or modify

** it under the terms of the GNU General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** This program is distributed in the hope that it will be useful,

** but WITHOUT ANY WARRANTY; without even the implied warranty of

** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

** GNU General Public License for more details.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

#ifndef ZABBIX_ZBXEVAL_H

#define ZABBIX_ZBXEVAL_H

​

#include "common.h"

#include "zbxalgo.h"

#include "zbxvariant.h"

​

/*

 * Token type flags (32 bits):

 * | 6 bits       | 4 bits              | 22 bits    |

 * | token class  | operator precedence | token type |

 */

#define ZBX_EVAL_CLASS_OPERAND      (__UINT64_C(0x01) << 26)

#define ZBX_EVAL_CLASS_OPERATOR1    (__UINT64_C(0x02) << 26)

#define ZBX_EVAL_CLASS_OPERATOR2    (__UINT64_C(0x04) << 26)

#define ZBX_EVAL_CLASS_FUNCTION     (__UINT64_C(0x08) << 26)

#define ZBX_EVAL_CLASS_SEPARATOR    (__UINT64_C(0x10) << 26)

#define ZBX_EVAL_CLASS_PROPERTY     (__UINT64_C(0x20) << 26)

#define ZBX_EVAL_CLASS_OPERATOR     (ZBX_EVAL_CLASS_OPERATOR1 | ZBX_EVAL_CLASS_OPERATOR2)

​

#define ZBX_EVAL_BEFORE_OPERAND     (ZBX_EVAL_CLASS_OPERATOR | ZBX_EVAL_CLASS_SEPARATOR)

#define ZBX_EVAL_BEFORE_OPERATOR    (ZBX_EVAL_CLASS_OPERAND | ZBX_EVAL_CLASS_PROPERTY)

​

#define ZBX_EVAL_OP_SET_PRECEDENCE(x)   ((x) << 22)

#define ZBX_EVAL_OP_PRIORITY        ZBX_EVAL_OP_SET_PRECEDENCE(0xf)

​

#define ZBX_EVAL_TOKEN_NOP      (0)

#define ZBX_EVAL_TOKEN_OP_ADD       (1 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(4))

#define ZBX_EVAL_TOKEN_OP_SUB       (2 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(4))

#define ZBX_EVAL_TOKEN_OP_MUL       (3 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(3))

#define ZBX_EVAL_TOKEN_OP_DIV       (4 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(3))

#define ZBX_EVAL_TOKEN_OP_MINUS     (5 | ZBX_EVAL_CLASS_OPERATOR1 | ZBX_EVAL_OP_SET_PRECEDENCE(2))

#define ZBX_EVAL_TOKEN_OP_EQ        (6 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(7))

#define ZBX_EVAL_TOKEN_OP_LT        (7 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(6))

#define ZBX_EVAL_TOKEN_OP_GT        (8 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(6))

#define ZBX_EVAL_TOKEN_OP_LE        (9 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(6))

#define ZBX_EVAL_TOKEN_OP_GE        (10 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(6))

#define ZBX_EVAL_TOKEN_OP_NE        (11 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(7))

#define ZBX_EVAL_TOKEN_OP_AND       (12 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(11))

#define ZBX_EVAL_TOKEN_OP_OR        (13 | ZBX_EVAL_CLASS_OPERATOR2 | ZBX_EVAL_OP_SET_PRECEDENCE(12))

#define ZBX_EVAL_TOKEN_OP_NOT       (14 | ZBX_EVAL_CLASS_OPERATOR1 | ZBX_EVAL_OP_SET_PRECEDENCE(2))

#define ZBX_EVAL_TOKEN_VAR_NUM      (15 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_VAR_STR      (16 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_VAR_MACRO    (17 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_VAR_USERMACRO    (18 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_VAR_LLDMACRO (19 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_FUNCTIONID   (20 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_FUNCTION     (21 | ZBX_EVAL_CLASS_FUNCTION)

#define ZBX_EVAL_TOKEN_HIST_FUNCTION    (22 | ZBX_EVAL_CLASS_FUNCTION)

#define ZBX_EVAL_TOKEN_GROUP_OPEN   (23 | ZBX_EVAL_CLASS_SEPARATOR)

#define ZBX_EVAL_TOKEN_GROUP_CLOSE  (24 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_COMMA        (25 | ZBX_EVAL_CLASS_SEPARATOR)

#define ZBX_EVAL_TOKEN_ARG_QUERY    (26 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_ARG_PERIOD   (27 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_ARG_NULL     (28 | ZBX_EVAL_CLASS_OPERAND)

#define ZBX_EVAL_TOKEN_PROP_TAG     (29 | ZBX_EVAL_CLASS_PROPERTY)

#define ZBX_EVAL_TOKEN_PROP_GROUP   (30 | ZBX_EVAL_CLASS_PROPERTY)

#define ZBX_EVAL_TOKEN_EXCEPTION    (31 | ZBX_EVAL_CLASS_FUNCTION)

​

/* token parsing rules */

​

#define ZBX_EVAL_PARSE_MACRO        __UINT64_C(0x00000001)

#define ZBX_EVAL_PARSE_USERMACRO    __UINT64_C(0x00000002)

#define ZBX_EVAL_PARSE_LLDMACRO     __UINT64_C(0x00000004)

#define ZBX_EVAL_PARSE_FUNCTIONID   __UINT64_C(0x00000008)

#define ZBX_EVAL_PARSE_ITEM_QUERY   __UINT64_C(0x00000010)

#define ZBX_EVAL_PARSE_CONST_INDEX  __UINT64_C(0x00000020)

#define ZBX_EVAL_PARSE_COMPOUND_CONST   __UINT64_C(0x00000040)

#define ZBX_EVAL_PARSE_MATH     __UINT64_C(0x00000080)  /* +, -, *, / */

#define ZBX_EVAL_PARSE_COMPARE_EQ   __UINT64_C(0x00000100)  /* =, <> */

#define ZBX_EVAL_PARSE_COMPARE_SORT __UINT64_C(0x00000200)  /* <, <=, >, >= */

#define ZBX_EVAL_PARSE_LOGIC        __UINT64_C(0x00000400)  /* or, and, not */