ExpressionLanguageProvider.php

<?php


/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\Routing\Matcher;

use Symfony\Component\ExpressionLanguage\ExpressionFunction;
use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
use Symfony\Contracts\Service\ServiceProviderInterface;

/**
 * Exposes functions defined in the request context to route conditions.
 *
 * @author Ahmed TAILOULOUTE <ahmed.tailouloute@gmail.com>
 */
class ExpressionLanguageProvider implements ExpressionFunctionProviderInterface {
    public function __construct(ServiceProviderInterface $functions) {
    }
    public function getFunctions() : array {
        $functions = [];
        foreach ($this->functions
            ->getProvidedServices() as $function => $type) {
            $functions[] = new ExpressionFunction($function, static fn(...$args) => \sprintf('($context->getParameter(\'_functions\')->get(%s)(%s))', var_export($function, true), implode(', ', $args)), fn($values, ...$args) => $values['context']->getParameter('_functions')
                ->get($function)(...$args));
        }
        return $functions;
    }
    public function get(string $function) : callable {
        return $this->functions
            ->get($function);
    }

}