tracking/Classes/Domain/ExpressionLanguage/SymfonyExpressionLanguage.php

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<?php
declare(strict_types=1);
/*
* Copyright (C) 2022 Daniel Siepmann <coding@daniel-siepmann.de>
*
* 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.
*/
namespace DanielSiepmann\Tracking\Domain\ExpressionLanguage;
use DanielSiepmann\Tracking\Domain\Model\Expression;
use DanielSiepmann\Tracking\Domain\Model\SymfonyExpression;
use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
use TYPO3\CMS\Core\Utility\ArrayUtility;
use TYPO3\CMS\Core\Utility\Exception\MissingArrayPathException;
class SymfonyExpressionLanguage implements Factory
{
public function create(
string $expression,
array $variables
): Expression {
$language = new ExpressionLanguage();
$this->registerTraverseFunction($language);
return new SymfonyExpression(
$expression,
$variables,
$language
);
}
/**
* Taken from TYPO3 Core, see: https://docs.typo3.org/m/typo3/reference-typoscript/11.5/en-us/Conditions/Index.html#traverse
*/
private function registerTraverseFunction(ExpressionLanguage $language): void
{
$language->register(
'traverse',
static function () {
// Not implemented, we only use the evaluator
},
static function ($arguments, $array, $path) {
if (!is_array($array) || !is_string($path) || $path === '') {
return '';
}
try {
return ArrayUtility::getValueByPath($array, $path);
} catch (MissingArrayPathException $e) {
return '';
}
}
);
}
}