Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\DependencyInjection\Compiler;
Chris@0: 
Chris@0: use Symfony\Component\DependencyInjection\ContainerBuilder;
Chris@0: use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
Chris@0: use Symfony\Component\DependencyInjection\Reference;
Chris@0: 
Chris@0: /**
Chris@0:  * Replaces aliases with actual service definitions, effectively removing these
Chris@0:  * aliases.
Chris@0:  *
Chris@0:  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
Chris@0:  */
Chris@14: class ReplaceAliasByActualDefinitionPass extends AbstractRecursivePass
Chris@0: {
Chris@14:     private $replacements;
Chris@0: 
Chris@0:     /**
Chris@0:      * Process the Container to replace aliases with service definitions.
Chris@0:      *
Chris@0:      * @throws InvalidArgumentException if the service definition does not exist
Chris@0:      */
Chris@0:     public function process(ContainerBuilder $container)
Chris@0:     {
Chris@0:         // First collect all alias targets that need to be replaced
Chris@17:         $seenAliasTargets = [];
Chris@17:         $replacements = [];
Chris@0:         foreach ($container->getAliases() as $definitionId => $target) {
Chris@14:             $targetId = $container->normalizeId($target);
Chris@0:             // Special case: leave this target alone
Chris@0:             if ('service_container' === $targetId) {
Chris@0:                 continue;
Chris@0:             }
Chris@0:             // Check if target needs to be replaces
Chris@0:             if (isset($replacements[$targetId])) {
Chris@14:                 $container->setAlias($definitionId, $replacements[$targetId])->setPublic($target->isPublic())->setPrivate($target->isPrivate());
Chris@0:             }
Chris@0:             // No need to process the same target twice
Chris@0:             if (isset($seenAliasTargets[$targetId])) {
Chris@0:                 continue;
Chris@0:             }
Chris@0:             // Process new target
Chris@0:             $seenAliasTargets[$targetId] = true;
Chris@0:             try {
Chris@0:                 $definition = $container->getDefinition($targetId);
Chris@0:             } catch (InvalidArgumentException $e) {
Chris@0:                 throw new InvalidArgumentException(sprintf('Unable to replace alias "%s" with actual definition "%s".', $definitionId, $targetId), null, $e);
Chris@0:             }
Chris@14:             if ($definition->isPublic() || $definition->isPrivate()) {
Chris@0:                 continue;
Chris@0:             }
Chris@0:             // Remove private definition and schedule for replacement
Chris@14:             $definition->setPublic(!$target->isPrivate());
Chris@14:             $definition->setPrivate($target->isPrivate());
Chris@0:             $container->setDefinition($definitionId, $definition);
Chris@0:             $container->removeDefinition($targetId);
Chris@0:             $replacements[$targetId] = $definitionId;
Chris@0:         }
Chris@14:         $this->replacements = $replacements;
Chris@0: 
Chris@14:         parent::process($container);
Chris@17:         $this->replacements = [];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@14:      * {@inheritdoc}
Chris@0:      */
Chris@14:     protected function processValue($value, $isRoot = false)
Chris@0:     {
Chris@14:         if ($value instanceof Reference && isset($this->replacements[$referenceId = $this->container->normalizeId($value)])) {
Chris@0:             // Perform the replacement
Chris@14:             $newId = $this->replacements[$referenceId];
Chris@14:             $value = new Reference($newId, $value->getInvalidBehavior());
Chris@14:             $this->container->log($this, sprintf('Changed reference of service "%s" previously pointing to "%s" to "%s".', $this->currentId, $referenceId, $newId));
Chris@0:         }
Chris@0: 
Chris@14:         return parent::processValue($value, $isRoot);
Chris@0:     }
Chris@0: }