--- /dev/null
+<?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();
+
+ $container->setDefinitions($this->inlineArguments($container, $container->getDefinitions(), true));
+ }
+
+ /**
+ * Processes inline arguments.
+ *
+ * @param ContainerBuilder $container The ContainerBuilder
+ * @param array $arguments An array of arguments
+ * @param bool $isRoot If we are processing the root definitions or not
+ *
+ * @return array
+ */
+ private function inlineArguments(ContainerBuilder $container, array $arguments, $isRoot = false)
+ {
+ foreach ($arguments as $k => $argument) {
+ if ($isRoot) {
+ $this->currentId = $k;
+ }
+ if (is_array($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, $this->currentId));
+
+ if ($definition->isShared() && ContainerInterface::SCOPE_PROTOTYPE !== $definition->getScope(false)) {
+ $arguments[$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()));
+
+ $configurator = $this->inlineArguments($container, array($argument->getConfigurator()));
+ $argument->setConfigurator($configurator[0]);
+
+ $factory = $this->inlineArguments($container, array($argument->getFactory()));
+ $argument->setFactory($factory[0]);
+ }
+ }
+
+ 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 $definition)
+ {
+ if (!$definition->isShared() || ContainerInterface::SCOPE_PROTOTYPE === $definition->getScope(false)) {
+ return true;
+ }
+
+ if ($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(false) === $definition->getScope(false);
+ }
+}