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   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\DependencyInjection\Compiler;
  13
  14 use Symfony\Component\DependencyInjection\ContainerBuilder;
  15 use Symfony\Component\DependencyInjection\Alias;
  16
  17 /**
  18  * Overwrites a service but keeps the overridden one.
  19  *
  20  * @author Christophe Coevoet <stof@notk.org>
  21  * @author Fabien Potencier <fabien@symfony.com>
  22  * @author Diego Saint Esteben <diego@saintesteben.me>
  23  */
  24 class DecoratorServicePass implements CompilerPassInterface
  25 {
  26     public function process(ContainerBuilder $container)
  27     {
  28         $definitions = new \SplPriorityQueue();
  29         $order = PHP_INT_MAX;
  30
  31         foreach ($container->getDefinitions() as $id => $definition) {
  32             if (!$decorated = $definition->getDecoratedService()) {
  33                 continue;
  34             }
  35             $definitions->insert(array($id, $definition), array($decorated[2], --$order));
  36         }
  37
  38         foreach ($definitions as list($id, $definition)) {
  39             list($inner, $renamedId) = $definition->getDecoratedService();
  40
  41             $definition->setDecoratedService(null);
  42
  43             if (!$renamedId) {
  44                 $renamedId = $id.'.inner';
  45             }
  46
  47             // we create a new alias/service for the service we are replacing
  48             // to be able to reference it in the new one
  49             if ($container->hasAlias($inner)) {
  50                 $alias = $container->getAlias($inner);
  51                 $public = $alias->isPublic();
  52                 $private = $alias->isPrivate();
  53                 $container->setAlias($renamedId, new Alias($container->normalizeId($alias), false));
  54             } else {
  55                 $decoratedDefinition = $container->getDefinition($inner);
  56                 $definition->setTags(array_merge($decoratedDefinition->getTags(), $definition->getTags()));
  57                 if ($types = array_merge($decoratedDefinition->getAutowiringTypes(false), $definition->getAutowiringTypes(false))) {
  58                     $definition->setAutowiringTypes($types);
  59                 }
  60                 $public = $decoratedDefinition->isPublic();
  61                 $private = $decoratedDefinition->isPrivate();
  62                 $decoratedDefinition->setPublic(false);
  63                 $decoratedDefinition->setTags(array());
  64                 if ($decoratedDefinition->getAutowiringTypes(false)) {
  65                     $decoratedDefinition->setAutowiringTypes(array());
  66                 }
  67                 $container->setDefinition($renamedId, $decoratedDefinition);
  68             }
  69
  70             $container->setAlias($inner, $id)->setPublic($public)->setPrivate($private);
  71         }
  72     }
  73 }