annotate vendor/symfony/dependency-injection/Compiler/ResolveReferencesToAliasesPass.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents 129ea1e6d783
children
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Chris@0 1 <?php
Chris@0 2
Chris@0 3 /*
Chris@0 4 * This file is part of the Symfony package.
Chris@0 5 *
Chris@0 6 * (c) Fabien Potencier <fabien@symfony.com>
Chris@0 7 *
Chris@0 8 * For the full copyright and license information, please view the LICENSE
Chris@0 9 * file that was distributed with this source code.
Chris@0 10 */
Chris@0 11
Chris@0 12 namespace Symfony\Component\DependencyInjection\Compiler;
Chris@0 13
Chris@17 14 use Symfony\Component\DependencyInjection\ContainerBuilder;
Chris@0 15 use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
Chris@0 16 use Symfony\Component\DependencyInjection\Reference;
Chris@0 17
Chris@0 18 /**
Chris@0 19 * Replaces all references to aliases with references to the actual service.
Chris@0 20 *
Chris@0 21 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
Chris@0 22 */
Chris@14 23 class ResolveReferencesToAliasesPass extends AbstractRecursivePass
Chris@0 24 {
Chris@0 25 /**
Chris@14 26 * {@inheritdoc}
Chris@0 27 */
Chris@0 28 public function process(ContainerBuilder $container)
Chris@0 29 {
Chris@14 30 parent::process($container);
Chris@0 31
Chris@0 32 foreach ($container->getAliases() as $id => $alias) {
Chris@14 33 $aliasId = $container->normalizeId($alias);
Chris@14 34 if ($aliasId !== $defId = $this->getDefinitionId($aliasId, $container)) {
Chris@14 35 $container->setAlias($id, $defId)->setPublic($alias->isPublic())->setPrivate($alias->isPrivate());
Chris@0 36 }
Chris@0 37 }
Chris@0 38 }
Chris@0 39
Chris@0 40 /**
Chris@14 41 * {@inheritdoc}
Chris@0 42 */
Chris@14 43 protected function processValue($value, $isRoot = false)
Chris@0 44 {
Chris@14 45 if ($value instanceof Reference) {
Chris@14 46 $defId = $this->getDefinitionId($id = $this->container->normalizeId($value), $this->container);
Chris@0 47
Chris@14 48 if ($defId !== $id) {
Chris@14 49 return new Reference($defId, $value->getInvalidBehavior());
Chris@0 50 }
Chris@0 51 }
Chris@0 52
Chris@14 53 return parent::processValue($value);
Chris@0 54 }
Chris@0 55
Chris@0 56 /**
Chris@0 57 * Resolves an alias into a definition id.
Chris@0 58 *
Chris@14 59 * @param string $id The definition or alias id to resolve
Chris@14 60 * @param ContainerBuilder $container
Chris@0 61 *
Chris@0 62 * @return string The definition id with aliases resolved
Chris@0 63 */
Chris@14 64 private function getDefinitionId($id, ContainerBuilder $container)
Chris@0 65 {
Chris@17 66 $seen = [];
Chris@14 67 while ($container->hasAlias($id)) {
Chris@0 68 if (isset($seen[$id])) {
Chris@17 69 throw new ServiceCircularReferenceException($id, array_merge(array_keys($seen), [$id]));
Chris@0 70 }
Chris@0 71 $seen[$id] = true;
Chris@14 72 $id = $container->normalizeId($container->getAlias($id));
Chris@0 73 }
Chris@0 74
Chris@0 75 return $id;
Chris@0 76 }
Chris@0 77 }