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124 lines
3.2 KiB
124 lines
3.2 KiB
<?php declare(strict_types = 0);
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/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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/**
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* Class for storing the result returned by the trigger expression parser.
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*/
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class CExpressionParserResult extends CParserResult {
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const TOKEN_TYPE_OPEN_BRACE = 0;
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const TOKEN_TYPE_CLOSE_BRACE = 1;
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const TOKEN_TYPE_OPERATOR = 2;
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const TOKEN_TYPE_NUMBER = 3;
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const TOKEN_TYPE_MACRO = 4;
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const TOKEN_TYPE_USER_MACRO = 5;
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const TOKEN_TYPE_LLD_MACRO = 6;
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const TOKEN_TYPE_STRING = 7;
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const TOKEN_TYPE_FUNCTIONID_MACRO = 8;
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const TOKEN_TYPE_HIST_FUNCTION = 9;
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const TOKEN_TYPE_MATH_FUNCTION = 10;
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const TOKEN_TYPE_EXPRESSION = 11;
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/**
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* Array of tokens.
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*
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* @var array
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*/
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protected $tokens = [];
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/**
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* Return the expression tokens.
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*
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* @see CExpressionParserResult::$token for the structure of a token array
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*
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* @return array
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*/
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public function getTokens() {
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return $this->tokens;
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}
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/**
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* Add a token to the result.
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*
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* @param CParserResult $token
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*/
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public function addTokens(array $tokens): void {
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$this->tokens = array_merge($this->tokens, $tokens);
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}
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/**
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* Auxiliary method for getTokensOfTypes().
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*
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* @param array $tokens
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* @param array $types
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*
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* @return array
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*/
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private static function _getTokensOfTypes(array $tokens, array $types) {
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$result = [];
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foreach ($tokens as $token) {
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if (in_array($token['type'], $types)) {
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$result[] = $token;
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}
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if ($token['type'] == CExpressionParserResult::TOKEN_TYPE_EXPRESSION) {
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$result = array_merge($result, self::_getTokensOfTypes($token['data']['tokens'], $types));
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}
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elseif ($token['type'] == CExpressionParserResult::TOKEN_TYPE_MATH_FUNCTION) {
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foreach ($token['data']['parameters'] as $parameter) {
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$result = array_merge($result, self::_getTokensOfTypes($parameter['data']['tokens'], $types));
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}
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}
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}
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return $result;
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}
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/**
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* Returns all tokens include nested of the given types.
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*
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* @param array $types
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*
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* @return array
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*/
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public function getTokensOfTypes(array $types): array {
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return self::_getTokensOfTypes($this->tokens, $types);
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}
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/**
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* Return list hosts found in parsed trigger expression.
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*
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* @return array
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*/
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public function getHosts(): array {
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$hist_functions = $this->getTokensOfTypes([CExpressionParserResult::TOKEN_TYPE_HIST_FUNCTION]);
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$hosts = [];
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foreach ($hist_functions as $hist_function) {
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$host = $hist_function['data']['parameters'][0]['data']['host'];
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$hosts[$host] = $host;
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}
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return array_values($hosts);
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}
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}
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