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@14: use Symfony\Component\DependencyInjection\Argument\ArgumentInterface;
Chris@0: use Symfony\Component\DependencyInjection\Definition;
Chris@14: use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
Chris@0: use Symfony\Component\DependencyInjection\Reference;
Chris@0: 
Chris@0: /**
Chris@0:  * Inline service definitions where this is possible.
Chris@0:  *
Chris@0:  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
Chris@0:  */
Chris@14: class InlineServiceDefinitionsPass extends AbstractRecursivePass implements RepeatablePassInterface
Chris@0: {
Chris@17:     private $cloningIds = [];
Chris@17:     private $inlinedServiceIds = [];
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function setRepeatedPass(RepeatedPass $repeatedPass)
Chris@0:     {
Chris@14:         // no-op for BC
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@14:      * Returns an array of all services inlined by this pass.
Chris@0:      *
Chris@14:      * The key is the inlined service id and its value is the list of services it was inlined into.
Chris@14:      *
Chris@14:      * @deprecated since version 3.4, to be removed in 4.0.
Chris@14:      *
Chris@14:      * @return array
Chris@0:      */
Chris@14:     public function getInlinedServiceIds()
Chris@0:     {
Chris@14:         @trigger_error('Calling InlineServiceDefinitionsPass::getInlinedServiceIds() is deprecated since Symfony 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);
Chris@0: 
Chris@14:         return $this->inlinedServiceIds;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@14:      * {@inheritdoc}
Chris@0:      */
Chris@14:     protected function processValue($value, $isRoot = false)
Chris@0:     {
Chris@14:         if ($value instanceof ArgumentInterface) {
Chris@14:             // Reference found in ArgumentInterface::getValues() are not inlineable
Chris@14:             return $value;
Chris@0:         }
Chris@0: 
Chris@14:         if ($value instanceof Definition && $this->cloningIds) {
Chris@14:             if ($value->isShared()) {
Chris@14:                 return $value;
Chris@14:             }
Chris@14:             $value = clone $value;
Chris@14:         }
Chris@14: 
Chris@14:         if (!$value instanceof Reference || !$this->container->hasDefinition($id = $this->container->normalizeId($value))) {
Chris@14:             return parent::processValue($value, $isRoot);
Chris@14:         }
Chris@14: 
Chris@14:         $definition = $this->container->getDefinition($id);
Chris@14: 
Chris@14:         if (!$this->isInlineableDefinition($id, $definition, $this->container->getCompiler()->getServiceReferenceGraph())) {
Chris@14:             return $value;
Chris@14:         }
Chris@14: 
Chris@14:         $this->container->log($this, sprintf('Inlined service "%s" to "%s".', $id, $this->currentId));
Chris@14:         $this->inlinedServiceIds[$id][] = $this->currentId;
Chris@14: 
Chris@14:         if ($definition->isShared()) {
Chris@14:             return $definition;
Chris@14:         }
Chris@14: 
Chris@14:         if (isset($this->cloningIds[$id])) {
Chris@14:             $ids = array_keys($this->cloningIds);
Chris@14:             $ids[] = $id;
Chris@14: 
Chris@17:             throw new ServiceCircularReferenceException($id, \array_slice($ids, array_search($id, $ids)));
Chris@14:         }
Chris@14: 
Chris@14:         $this->cloningIds[$id] = true;
Chris@14:         try {
Chris@14:             return $this->processValue($definition);
Chris@14:         } finally {
Chris@14:             unset($this->cloningIds[$id]);
Chris@14:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Checks if the definition is inlineable.
Chris@0:      *
Chris@0:      * @return bool If the definition is inlineable
Chris@0:      */
Chris@14:     private function isInlineableDefinition($id, Definition $definition, ServiceReferenceGraph $graph)
Chris@0:     {
Chris@16:         if ($definition->getErrors() || $definition->isDeprecated() || $definition->isLazy() || $definition->isSynthetic()) {
Chris@16:             return false;
Chris@16:         }
Chris@16: 
Chris@0:         if (!$definition->isShared()) {
Chris@0:             return true;
Chris@0:         }
Chris@0: 
Chris@16:         if ($definition->isPublic() || $definition->isPrivate()) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@14:         if (!$graph->hasNode($id)) {
Chris@0:             return true;
Chris@0:         }
Chris@0: 
Chris@0:         if ($this->currentId == $id) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@17:         $ids = [];
Chris@17:         $isReferencedByConstructor = false;
Chris@14:         foreach ($graph->getNode($id)->getInEdges() as $edge) {
Chris@17:             $isReferencedByConstructor = $isReferencedByConstructor || $edge->isReferencedByConstructor();
Chris@17:             if ($edge->isWeak() || $edge->isLazy()) {
Chris@14:                 return false;
Chris@14:             }
Chris@0:             $ids[] = $edge->getSourceNode()->getId();
Chris@0:         }
Chris@0: 
Chris@17:         if (!$ids) {
Chris@17:             return true;
Chris@17:         }
Chris@17: 
Chris@17:         if (\count(array_unique($ids)) > 1) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@17:         if (\count($ids) > 1 && \is_array($factory = $definition->getFactory()) && ($factory[0] instanceof Reference || $factory[0] instanceof Definition)) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@17:         return $this->container->getDefinition($ids[0])->isShared();
Chris@0:     }
Chris@0: }