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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\DependencyInjection\Compiler;
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13
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14 use Psr\Container\ContainerInterface;
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15 use Symfony\Component\DependencyInjection\Definition;
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16 use Symfony\Component\DependencyInjection\Reference;
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17
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18 /**
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19 * Compiler pass to inject their service locator to service subscribers.
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20 *
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21 * @author Nicolas Grekas <p@tchwork.com>
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22 */
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23 class ResolveServiceSubscribersPass extends AbstractRecursivePass
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24 {
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25 private $serviceLocator;
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26
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27 protected function processValue($value, $isRoot = false)
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28 {
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29 if ($value instanceof Reference && $this->serviceLocator && ContainerInterface::class === $this->container->normalizeId($value)) {
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30 return new Reference($this->serviceLocator);
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31 }
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32
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33 if (!$value instanceof Definition) {
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34 return parent::processValue($value, $isRoot);
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35 }
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36
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37 $serviceLocator = $this->serviceLocator;
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38 $this->serviceLocator = null;
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39
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40 if ($value->hasTag('container.service_subscriber.locator')) {
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41 $this->serviceLocator = $value->getTag('container.service_subscriber.locator')[0]['id'];
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42 $value->clearTag('container.service_subscriber.locator');
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43 }
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44
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45 try {
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46 return parent::processValue($value);
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47 } finally {
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48 $this->serviceLocator = $serviceLocator;
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49 }
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50 }
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51 }
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