58 lines
2.1 KiB
PHP
58 lines
2.1 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DependencyInjection;
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use Symfony\Component\DependencyInjection\Exception\LogicException;
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use Symfony\Component\ExpressionLanguage\ExpressionFunction;
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use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
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/**
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* Define some ExpressionLanguage functions.
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*
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* To get a service, use service('request').
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* To get a parameter, use parameter('kernel.debug').
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* To get an env variable, use env('SOME_VARIABLE').
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class ExpressionLanguageProvider implements ExpressionFunctionProviderInterface
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{
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private ?\Closure $serviceCompiler;
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private ?\Closure $getEnv;
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public function __construct(?callable $serviceCompiler = null, ?\Closure $getEnv = null)
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{
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$this->serviceCompiler = null === $serviceCompiler ? null : $serviceCompiler(...);
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$this->getEnv = $getEnv;
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}
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public function getFunctions(): array
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{
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return [
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new ExpressionFunction('service', $this->serviceCompiler ?? fn ($arg) => sprintf('$container->get(%s)', $arg), fn (array $variables, $value) => $variables['container']->get($value)),
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new ExpressionFunction('parameter', fn ($arg) => sprintf('$container->getParameter(%s)', $arg), fn (array $variables, $value) => $variables['container']->getParameter($value)),
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new ExpressionFunction('env', fn ($arg) => sprintf('$container->getEnv(%s)', $arg), function (array $variables, $value) {
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if (!$this->getEnv) {
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throw new LogicException('You need to pass a getEnv closure to the expression language provider to use the "env" function.');
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}
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return ($this->getEnv)($value);
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}),
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new ExpressionFunction('arg', fn ($arg) => sprintf('$args?->get(%s)', $arg), fn (array $variables, $value) => $variables['args']?->get($value)),
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];
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}
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}
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