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<?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\Extension; use Symfony\Component\Config\Definition\ConfigurationInterface; use Symfony\Component\Config\Definition\Processor; use Symfony\Component\DependencyInjection\Container; use Symfony\Component\DependencyInjection\ContainerBuilder; use Symfony\Component\DependencyInjection\Exception\BadMethodCallException; use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException; /** * Provides useful features shared by many extensions. * * @author Fabien Potencier <fabien@symfony.com> */ abstract class Extension implements ExtensionInterface, ConfigurationExtensionInterface { private $processedConfigs = []; /** * {@inheritdoc} */ public function getXsdValidationBasePath() { return false; } /** * {@inheritdoc} */ public function getNamespace() { return 'http://example.org/schema/dic/'.$this->getAlias(); } /** * Returns the recommended alias to use in XML. * * This alias is also the mandatory prefix to use when using YAML. * * This convention is to remove the "Extension" postfix from the class * name and then lowercase and underscore the result. So: * * AcmeHelloExtension * * becomes * * acme_hello * * This can be overridden in a sub-class to specify the alias manually. * * @return string The alias * * @throws BadMethodCallException When the extension name does not follow conventions */ public function getAlias() { $className = static::class; if ('Extension' != substr($className, -9)) { throw new BadMethodCallException('This extension does not follow the naming convention; you must overwrite the getAlias() method.'); } $classBaseName = substr(strrchr($className, '\\'), 1, -9); return Container::underscore($classBaseName); } /** * {@inheritdoc} */ public function getConfiguration(array $config, ContainerBuilder $container) { $class = static::class; if (false !== strpos($class, "\0")) { return null; // ignore anonymous classes } $class = substr_replace($class, '\Configuration', strrpos($class, '\\')); $class = $container->getReflectionClass($class); if (!$class) { return null; } if (!$class->implementsInterface(ConfigurationInterface::class)) { @trigger_error(sprintf('Not implementing "%s" in the extension configuration class "%s" is deprecated since Symfony 4.1.', ConfigurationInterface::class, $class->getName()), E_USER_DEPRECATED); //throw new LogicException(sprintf('The extension configuration class "%s" must implement "%s".', $class->getName(), ConfigurationInterface::class)); return null; } if (!($constructor = $class->getConstructor()) || !$constructor->getNumberOfRequiredParameters()) { return $class->newInstance(); } return null; } final protected function processConfiguration(ConfigurationInterface $configuration, array $configs): array { $processor = new Processor(); return $this->processedConfigs[] = $processor->processConfiguration($configuration, $configs); } /** * @internal */ final public function getProcessedConfigs(): array { try { return $this->processedConfigs; } finally { $this->processedConfigs = []; } } /** * @return bool Whether the configuration is enabled * * @throws InvalidArgumentException When the config is not enableable */ protected function isConfigEnabled(ContainerBuilder $container, array $config) { if (!\array_key_exists('enabled', $config)) { throw new InvalidArgumentException("The config array has no 'enabled' key."); } return (bool) $container->getParameterBag()->resolveValue($config['enabled']); } }