Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/dependency-injection/Compiler/Compiler.php

@@ -0,0 +1,120 @@
+<?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\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * This class is used to remove circular dependencies between individual passes.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ *
+ * @api
+ */
+class Compiler
+{
+    private $passConfig;
+    private $log = array();
+    private $loggingFormatter;
+    private $serviceReferenceGraph;
+
+    /**
+     * Constructor.
+     */
+    public function __construct()
+    {
+        $this->passConfig = new PassConfig();
+        $this->serviceReferenceGraph = new ServiceReferenceGraph();
+        $this->loggingFormatter = new LoggingFormatter();
+    }
+
+    /**
+     * Returns the PassConfig.
+     *
+     * @return PassConfig The PassConfig instance
+     *
+     * @api
+     */
+    public function getPassConfig()
+    {
+        return $this->passConfig;
+    }
+
+    /**
+     * Returns the ServiceReferenceGraph.
+     *
+     * @return ServiceReferenceGraph The ServiceReferenceGraph instance
+     *
+     * @api
+     */
+    public function getServiceReferenceGraph()
+    {
+        return $this->serviceReferenceGraph;
+    }
+
+    /**
+     * Returns the logging formatter which can be used by compilation passes.
+     *
+     * @return LoggingFormatter
+     */
+    public function getLoggingFormatter()
+    {
+        return $this->loggingFormatter;
+    }
+
+    /**
+     * Adds a pass to the PassConfig.
+     *
+     * @param CompilerPassInterface $pass A compiler pass
+     * @param string                $type The type of the pass
+     *
+     * @api
+     */
+    public function addPass(CompilerPassInterface $pass, $type = PassConfig::TYPE_BEFORE_OPTIMIZATION)
+    {
+        $this->passConfig->addPass($pass, $type);
+    }
+
+    /**
+     * Adds a log message.
+     *
+     * @param string $string The log message
+     */
+    public function addLogMessage($string)
+    {
+        $this->log[] = $string;
+    }
+
+    /**
+     * Returns the log.
+     *
+     * @return array Log array
+     */
+    public function getLog()
+    {
+        return $this->log;
+    }
+
+    /**
+     * Run the Compiler and process all Passes.
+     *
+     * @param ContainerBuilder $container
+     *
+     * @api
+     */
+    public function compile(ContainerBuilder $container)
+    {
+        foreach ($this->passConfig->getPasses() as $pass) {
+            $pass->process($container);
+        }
+    }
+}