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

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

@@ -0,0 +1,157 @@
+<?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\ContainerInterface;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * Inline service definitions where this is possible.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class InlineServiceDefinitionsPass implements RepeatablePassInterface
+{
+    private $repeatedPass;
+    private $graph;
+    private $compiler;
+    private $formatter;
+    private $currentId;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setRepeatedPass(RepeatedPass $repeatedPass)
+    {
+        $this->repeatedPass = $repeatedPass;
+    }
+
+    /**
+     * Processes the ContainerBuilder for inline service definitions.
+     *
+     * @param ContainerBuilder $container
+     */
+    public function process(ContainerBuilder $container)
+    {
+        $this->compiler = $container->getCompiler();
+        $this->formatter = $this->compiler->getLoggingFormatter();
+        $this->graph = $this->compiler->getServiceReferenceGraph();
+
+        foreach ($container->getDefinitions() as $id => $definition) {
+            $this->currentId = $id;
+
+            $definition->setArguments(
+                $this->inlineArguments($container, $definition->getArguments())
+            );
+
+            $definition->setMethodCalls(
+                $this->inlineArguments($container, $definition->getMethodCalls())
+            );
+
+            $definition->setProperties(
+                $this->inlineArguments($container, $definition->getProperties())
+            );
+
+            $configurator = $this->inlineArguments($container, array($definition->getConfigurator()));
+            $definition->setConfigurator($configurator[0]);
+
+            $factory = $this->inlineArguments($container, array($definition->getFactory()));
+            $definition->setFactory($factory[0]);
+        }
+    }
+
+    /**
+     * Processes inline arguments.
+     *
+     * @param ContainerBuilder $container The ContainerBuilder
+     * @param array            $arguments An array of arguments
+     *
+     * @return array
+     */
+    private function inlineArguments(ContainerBuilder $container, array $arguments)
+    {
+        foreach ($arguments as $k => $argument) {
+            if (is_array($argument)) {
+                $arguments[$k] = $this->inlineArguments($container, $argument);
+            } elseif ($argument instanceof Reference) {
+                if (!$container->hasDefinition($id = (string) $argument)) {
+                    continue;
+                }
+
+                if ($this->isInlineableDefinition($container, $id, $definition = $container->getDefinition($id))) {
+                    $this->compiler->addLogMessage($this->formatter->formatInlineService($this, $id, $this->currentId));
+
+                    if (ContainerInterface::SCOPE_PROTOTYPE !== $definition->getScope()) {
+                        $arguments[$k] = $definition;
+                    } else {
+                        $arguments[$k] = clone $definition;
+                    }
+                }
+            } elseif ($argument instanceof Definition) {
+                $argument->setArguments($this->inlineArguments($container, $argument->getArguments()));
+                $argument->setMethodCalls($this->inlineArguments($container, $argument->getMethodCalls()));
+                $argument->setProperties($this->inlineArguments($container, $argument->getProperties()));
+            }
+        }
+
+        return $arguments;
+    }
+
+    /**
+     * Checks if the definition is inlineable.
+     *
+     * @param ContainerBuilder $container
+     * @param string           $id
+     * @param Definition       $definition
+     *
+     * @return bool If the definition is inlineable
+     */
+    private function isInlineableDefinition(ContainerBuilder $container, $id, Definition $definition)
+    {
+        if (ContainerInterface::SCOPE_PROTOTYPE === $definition->getScope()) {
+            return true;
+        }
+
+        if ($definition->isPublic() || $definition->isLazy()) {
+            return false;
+        }
+
+        if (!$this->graph->hasNode($id)) {
+            return true;
+        }
+
+        if ($this->currentId == $id) {
+            return false;
+        }
+
+        $ids = array();
+        foreach ($this->graph->getNode($id)->getInEdges() as $edge) {
+            $ids[] = $edge->getSourceNode()->getId();
+        }
+
+        if (count(array_unique($ids)) > 1) {
+            return false;
+        }
+
+        if (count($ids) > 1 && is_array($factory = $definition->getFactory()) && ($factory[0] instanceof Reference || $factory[0] instanceof Definition)) {
+            return false;
+        }
+
+        if (count($ids) > 1 && $definition->getFactoryService(false)) {
+            return false;
+        }
+
+        return $container->getDefinition(reset($ids))->getScope() === $definition->getScope();
+    }
+}