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vendor/symfony/http-kernel/CacheClearer/CacheClearerInterface.php

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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\HttpKernel\CacheClearer;
+
+/**
+ * CacheClearerInterface.
+ *
+ * @author Dustin Dobervich <ddobervich@gmail.com>
+ */
+interface CacheClearerInterface
+{
+    /**
+     * Clears any caches necessary.
+     *
+     * @param string $cacheDir The cache directory
+     */
+    public function clear($cacheDir);
+}

vendor/symfony/http-kernel/CacheClearer/ChainCacheClearer.php

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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\HttpKernel\CacheClearer;
+
+/**
+ * ChainCacheClearer.
+ *
+ * @author Dustin Dobervich <ddobervich@gmail.com>
+ *
+ * @final since version 3.4
+ */
+class ChainCacheClearer implements CacheClearerInterface
+{
+    protected $clearers;
+
+    /**
+     * Constructs a new instance of ChainCacheClearer.
+     *
+     * @param array $clearers The initial clearers
+     */
+    public function __construct($clearers = array())
+    {
+        $this->clearers = $clearers;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear($cacheDir)
+    {
+        foreach ($this->clearers as $clearer) {
+            $clearer->clear($cacheDir);
+        }
+    }
+
+    /**
+     * Adds a cache clearer to the aggregate.
+     *
+     * @deprecated since version 3.4, to be removed in 4.0, inject the list of clearers as a constructor argument instead.
+     */
+    public function add(CacheClearerInterface $clearer)
+    {
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
+
+        $this->clearers[] = $clearer;
+    }
+}

vendor/symfony/http-kernel/CacheClearer/Psr6CacheClearer.php

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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\HttpKernel\CacheClearer;
+
+use Psr\Cache\CacheItemPoolInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class Psr6CacheClearer implements CacheClearerInterface
+{
+    private $pools = array();
+
+    public function __construct(array $pools = array())
+    {
+        $this->pools = $pools;
+    }
+
+    public function addPool(CacheItemPoolInterface $pool)
+    {
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Pass an array of pools indexed by name to the constructor instead.', __METHOD__), E_USER_DEPRECATED);
+
+        $this->pools[] = $pool;
+    }
+
+    public function hasPool($name)
+    {
+        return isset($this->pools[$name]);
+    }
+
+    public function clearPool($name)
+    {
+        if (!isset($this->pools[$name])) {
+            throw new \InvalidArgumentException(sprintf('Cache pool not found: %s.', $name));
+        }
+
+        return $this->pools[$name]->clear();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear($cacheDir)
+    {
+        foreach ($this->pools as $pool) {
+            $pool->clear();
+        }
+    }
+}