vendor/symfony/dependency-injection/ExpressionLanguageProvider.php line 33
<?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\DependencyInjection;use Symfony\Component\DependencyInjection\Exception\LogicException;use Symfony\Component\ExpressionLanguage\ExpressionFunction;use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;/*** Define some ExpressionLanguage functions.** To get a service, use service('request').* To get a parameter, use parameter('kernel.debug').* To get an env variable, use env('SOME_VARIABLE').** @author Fabien Potencier <fabien@symfony.com>*/class ExpressionLanguageProvider implements ExpressionFunctionProviderInterface{private ?\Closure $serviceCompiler;private ?\Closure $getEnv;public function __construct(callable $serviceCompiler = null, \Closure $getEnv = null){$this->serviceCompiler = null === $serviceCompiler ? null : $serviceCompiler(...);$this->getEnv = $getEnv;}public function getFunctions(): array{return [new ExpressionFunction('service', $this->serviceCompiler ?? function ($arg) {return sprintf('$this->get(%s)', $arg);}, function (array $variables, $value) {return $variables['container']->get($value);}),new ExpressionFunction('parameter', function ($arg) {return sprintf('$this->getParameter(%s)', $arg);}, function (array $variables, $value) {return $variables['container']->getParameter($value);}),new ExpressionFunction('env', function ($arg) {return sprintf('$this->getEnv(%s)', $arg);}, function (array $variables, $value) {if (!$this->getEnv) {throw new LogicException('You need to pass a getEnv closure to the expression langage provider to use the "env" function.');}return ($this->getEnv)($value);}),new ExpressionFunction('arg', function ($arg) {return sprintf('$args?->get(%s)', $arg);}, function (array $variables, $value) {return $variables['args']?->get($value);}),];}}