Zabbix

<?php declare(strict_types = 0);

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

​

/**

 * Class for validating trigger expressions and calculated item formulas.

 */

class CExpressionValidator extends CValidator {

​

    /**

     * An options array.

     *

     * Supported options:

     *   'usermacros' => false  Enable user macros usage in function parameters.

     *   'lldmacros' => false   Enable low-level discovery macros usage in function parameters.

     *   'calculated' => false  Validate expression as part of calculated item formula.

     *   'partial' => false     Validate partial expression (relaxed requirements).

     *

     * @var array

     */

    private $options = [

        'usermacros' => false,

        'lldmacros' => false,

        'calculated' => false,

        'partial' => false

    ];

​

    /**

     * Provider of information on math functions.

     *

     * @var CMathFunctionData

     */

    private $math_function_data;

​

    /**

     * Known math functions along with number or range of required parameters.

     *

     * @var array

     */

    private $math_function_parameters = [];

​

    /**

     * Known math functions along with additional requirements for usage in expressions.

     *

     * @var array

     */

    private $math_function_expression_rules = [];

​

    /**

     * Provider of information on history functions.

     *