116 lines
3.6 KiB
PHP
116 lines
3.6 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\Compiler;
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use Symfony\Component\DependencyInjection\Alias;
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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 implements CompilerPassInterface
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{
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private $container;
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/**
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* Processes the ContainerBuilder to replace references to aliases with actual service references.
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*
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* @param ContainerBuilder $container
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*/
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public function process(ContainerBuilder $container)
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{
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$this->container = $container;
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foreach ($container->getDefinitions() as $definition) {
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if ($definition->isSynthetic() || $definition->isAbstract()) {
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continue;
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}
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$definition->setArguments($this->processArguments($definition->getArguments()));
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$definition->setMethodCalls($this->processArguments($definition->getMethodCalls()));
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$definition->setProperties($this->processArguments($definition->getProperties()));
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$definition->setFactory($this->processFactory($definition->getFactory()));
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}
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foreach ($container->getAliases() as $id => $alias) {
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$aliasId = (string) $alias;
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if ($aliasId !== $defId = $this->getDefinitionId($aliasId)) {
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$container->setAlias($id, new Alias($defId, $alias->isPublic()));
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}
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}
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}
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/**
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* Processes the arguments to replace aliases.
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*
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* @param array $arguments An array of References
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*
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* @return array An array of References
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*/
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private function processArguments(array $arguments)
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{
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foreach ($arguments as $k => $argument) {
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if (is_array($argument)) {
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$arguments[$k] = $this->processArguments($argument);
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} elseif ($argument instanceof Reference) {
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$defId = $this->getDefinitionId($id = (string) $argument);
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if ($defId !== $id) {
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$arguments[$k] = new Reference($defId, $argument->getInvalidBehavior());
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}
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}
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}
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return $arguments;
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}
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private function processFactory($factory)
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{
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if (null === $factory || !is_array($factory) || !$factory[0] instanceof Reference) {
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return $factory;
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}
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$defId = $this->getDefinitionId($id = (string) $factory[0]);
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if ($defId !== $id) {
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$factory[0] = new Reference($defId, $factory[0]->getInvalidBehavior());
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}
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return $factory;
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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 $id The definition or alias id to resolve
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*
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* @return string The definition id with aliases resolved
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*/
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private function getDefinitionId($id)
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{
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$seen = array();
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while ($this->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) $this->container->getAlias($id);
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}
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return $id;
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}
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}
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