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<?php
/*
** Zabbix
** Copyright (C) 2001-2019 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.
**/
/**
* Class for storing the result returned by the trigger expression parser.
*/
class CTriggerExpressionParserResult extends CParserResult {
const TOKEN_TYPE_OPEN_BRACE = 0;
const TOKEN_TYPE_CLOSE_BRACE = 1;
const TOKEN_TYPE_OPERATOR = 2;
const TOKEN_TYPE_NUMBER = 3;
const TOKEN_TYPE_FUNCTION_MACRO = 4;
const TOKEN_TYPE_MACRO = 5;
const TOKEN_TYPE_USER_MACRO = 6;
const TOKEN_TYPE_LLD_MACRO = 7;
/**
* Array of expression tokens.
*
* Each token contains the following values:
* - type - token type
* - value - the token string itself
* - pos - position of the token in the source string
* - length - length of the token
* - data - an array containing additional information about the token
*
* The following "data" information can be available depending on the type of the token.
* For self::TOKEN_TYPE_FUNCTION_MACRO tokens:
* - host - host name
* - item - item key
* - function - the function string, e.g., "function(param1, param2)"
* - functionName - function name without parameters
* - functionParams - array of function parameters
* For self::TOKEN_TYPE_NUMBER tokens:
* - suffix - a time or byte suffix
*
* @var array
*/
protected $tokens = [];
/**
* Return the expression tokens.
*
* @see CTriggerExpressionParserResult::$token for the structure of a token array
*
* @return array
*/
public function getTokens() {
return $this->tokens;
}
/**
* Add a token to the result.
*
* @param string $type token type
* @param string $value token string
* @param string $pos position of the token in the source string
* @param string $length length of the token
* @param array|null $data additional token information
*/
public function addToken($type, $value, $pos, $length, array $data = null) {
$this->tokens[] = [
'type' => $type,
'value' => $value,
'pos' => $pos,
'length' => $length,
'data' => $data
];
}
/**
* Returns all tokens of the given type.
*
* @param $type
*
* @return array
*/
public function getTokensByType($type) {
$result = [];
foreach ($this->tokens as $token) {
if ($token['type'] == $type) {
$result[] = $token;
}
}
return $result;
}
/**
* Check whether the expression contains at least one token of the given type.
*
* @param int $type
*
* @return bool
*/
public function hasTokenOfType($type) {
foreach ($this->tokens as $token) {
if ($token['type'] == $type) {
return true;
}
}
return false;
}
}
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