78 lines
2.2 KiB
PHP
78 lines
2.2 KiB
PHP
<?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\Compiler;
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use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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/**
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* Replaces all references to aliases with references to the actual service.
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*
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* @author Johannes M. Schmitt <schmittjoh@gmail.com>
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*/
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class ResolveReferencesToAliasesPass extends AbstractRecursivePass
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{
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/**
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* {@inheritdoc}
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*/
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public function process(ContainerBuilder $container)
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{
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parent::process($container);
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foreach ($container->getAliases() as $id => $alias) {
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$aliasId = (string) $alias;
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if ($aliasId !== $defId = $this->getDefinitionId($aliasId, $container)) {
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$container->setAlias($id, $defId)->setPublic($alias->isPublic())->setPrivate($alias->isPrivate());
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}
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}
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}
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/**
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* {@inheritdoc}
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*/
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protected function processValue($value, $isRoot = false)
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{
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if ($value instanceof Reference) {
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$defId = $this->getDefinitionId($id = (string) $value, $this->container);
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if ($defId !== $id) {
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return new Reference($defId, $value->getInvalidBehavior());
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}
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}
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return parent::processValue($value);
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}
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/**
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* Resolves an alias into a definition id.
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*
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* @param string $id The definition or alias id to resolve
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* @param ContainerBuilder $container
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*
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* @return string The definition id with aliases resolved
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*/
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private function getDefinitionId($id, ContainerBuilder $container)
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{
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$seen = array();
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while ($container->hasAlias($id)) {
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if (isset($seen[$id])) {
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throw new ServiceCircularReferenceException($id, array_keys($seen));
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}
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$seen[$id] = true;
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$id = (string) $container->getAlias($id);
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}
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return $id;
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}
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}
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