diff vendor/symfony/console/CommandLoader/FactoryCommandLoader.php @ 14:1fec387a4317

Update Drupal core to 8.5.2 via Composer

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/console/CommandLoader/FactoryCommandLoader.php	Mon Apr 23 09:46:53 2018 +0100
@@ -0,0 +1,62 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Console\CommandLoader;
+
+use Symfony\Component\Console\Exception\CommandNotFoundException;
+
+/**
+ * A simple command loader using factories to instantiate commands lazily.
+ *
+ * @author Maxime Steinhausser <[e-mail]>
+ */
+class FactoryCommandLoader implements CommandLoaderInterface
+{
+    private $factories;
+
+    /**
+     * @param callable[] $factories Indexed by command names
+     */
+    public function __construct(array $factories)
+    {
+        $this->factories = $factories;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function has($name)
+    {
+        return isset($this->factories[$name]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get($name)
+    {
+        if (!isset($this->factories[$name])) {
+            throw new CommandNotFoundException(sprintf('Command "%s" does not exist.', $name));
+        }
+
+        $factory = $this->factories[$name];
+
+        return $factory();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNames()
+    {
+        return array_keys($this->factories);
+    }
+}