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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\Compiler;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
use Symfony\Component\DependencyInjection\Reference;
/**
* Replaces aliases with actual service definitions, effectively removing these
* aliases.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class ReplaceAliasByActualDefinitionPass extends AbstractRecursivePass
{
private $replacements;
private $autoAliasServicePass;
/**
* @internal to be removed in Symfony 6.0
*
* @return $this
*/
public function setAutoAliasServicePass(AutoAliasServicePass $autoAliasServicePass): self
{
$this->autoAliasServicePass = $autoAliasServicePass;
return $this;
}
/**
* Process the Container to replace aliases with service definitions.
*
* @throws InvalidArgumentException if the service definition does not exist
*/
public function process(ContainerBuilder $container)
{
// First collect all alias targets that need to be replaced
$seenAliasTargets = [];
$replacements = [];
$privateAliases = $this->autoAliasServicePass ? $this->autoAliasServicePass->getPrivateAliases() : [];
foreach ($privateAliases as $target) {
$target->setDeprecated('symfony/dependency-injection', '5.4', 'Accessing the "%alias_id%" service directly from the container is deprecated, use dependency injection instead.');
}
foreach ($container->getAliases() as $definitionId => $target) {
$targetId = (string) $target;
// Special case: leave this target alone
if ('service_container' === $targetId) {
continue;
}
// Check if target needs to be replaced
if (isset($replacements[$targetId])) {
$container->setAlias($definitionId, $replacements[$targetId])->setPublic($target->isPublic());
if ($target->isDeprecated()) {
$container->getAlias($definitionId)->setDeprecated(...array_values($target->getDeprecation('%alias_id%')));
}
}
// No need to process the same target twice
if (isset($seenAliasTargets[$targetId])) {
continue;
}
// Process new target
$seenAliasTargets[$targetId] = true;
try {
$definition = $container->getDefinition($targetId);
} catch (ServiceNotFoundException $e) {
if ('' !== $e->getId() && '@' === $e->getId()[0]) {
throw new ServiceNotFoundException($e->getId(), $e->getSourceId(), null, [substr($e->getId(), 1)]);
}
throw $e;
}
if ($definition->isPublic()) {
continue;
}
// Remove private definition and schedule for replacement
$definition->setPublic($target->isPublic());
$container->setDefinition($definitionId, $definition);
$container->removeDefinition($targetId);
$replacements[$targetId] = $definitionId;
if ($target->isPublic() && $target->isDeprecated()) {
$definition->addTag('container.private', $target->getDeprecation('%service_id%'));
}
}
$this->replacements = $replacements;
parent::process($container);
$this->replacements = [];
}
/**
* {@inheritdoc}
*/
protected function processValue($value, bool $isRoot = false)
{
if ($value instanceof Reference && isset($this->replacements[$referenceId = (string) $value])) {
// Perform the replacement
$newId = $this->replacements[$referenceId];
$value = new Reference($newId, $value->getInvalidBehavior());
$this->container->log($this, sprintf('Changed reference of service "%s" previously pointing to "%s" to "%s".', $this->currentId, $referenceId, $newId));
}
return parent::processValue($value, $isRoot);
}
}