[DI] Dont use Container::get() when fetching private services internally

Author: nicolas-grekas

src/Symfony/Component/DependencyInjection/Container.php

@@ -181,6 +181,7 @@ public function set($id, $service)
         if (isset($this->privates[$id])) {
             if (null === $service) {
                 @trigger_error(sprintf('Unsetting the "%s" private service is deprecated since Symfony 3.2 and won\'t be supported anymore in Symfony 4.0.', $id), E_USER_DEPRECATED);
+                unset($this->privates[$id]);
             } else {
                 @trigger_error(sprintf('Setting the "%s" private service is deprecated since Symfony 3.2 and won\'t be supported anymore in Symfony 4.0. A new public service will be created instead.', $id), E_USER_DEPRECATED);
             }

src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php

@@ -1376,6 +1376,11 @@ private function getServiceCall($id, Reference $reference = null)
             return '$this';
         }
 
+        if ($this->container->hasDefinition($id) && !$this->container->getDefinition($id)->isPublic()) {
+            // The following is PHP 5.5 syntax for what could be written as "(\$this->services['$id'] ?? \$this->{$this->generateMethodName($id)}())" on PHP>=7.0
+
+            return "\${(\$_ = isset(\$this->services['$id']) ? \$this->services['$id'] : \$this->{$this->generateMethodName($id)}()) && false ?: '_'}";
+        }
         if (null !== $reference && ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $reference->getInvalidBehavior()) {
             return sprintf('$this->get(\'%s\', ContainerInterface::NULL_ON_INVALID_REFERENCE)', $id);
         } else {

src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php

@@ -110,7 +110,7 @@ protected function getConfiguredServiceService()
     {
         $this->services['configured_service'] = $instance = new \stdClass();
 
-        $this->get('configurator_service')->configureStdClass($instance);
+        ${($_ = isset($this->services['configurator_service']) ? $this->services['configurator_service'] : $this->getConfiguratorServiceService()) && false ?: '_'}->configureStdClass($instance);
 
         return $instance;
     }
@@ -127,7 +127,7 @@ protected function getConfiguredServiceSimpleService()
     {
         $this->services['configured_service_simple'] = $instance = new \stdClass();
 
-        $this->get('configurator_service_simple')->configureStdClass($instance);
+        ${($_ = isset($this->services['configurator_service_simple']) ? $this->services['configurator_service_simple'] : $this->getConfiguratorServiceSimpleService()) && false ?: '_'}->configureStdClass($instance);
 
         return $instance;
     }
@@ -211,7 +211,7 @@ protected function getFactoryServiceService()
      */
     protected function getFactoryServiceSimpleService()
     {
-        return $this->services['factory_service_simple'] = $this->get('factory_simple')->getInstance();
+        return $this->services['factory_service_simple'] = ${($_ = isset($this->services['factory_simple']) ? $this->services['factory_simple'] : $this->getFactorySimpleService()) && false ?: '_'}->getInstance();
     }
 
     /**
@@ -279,7 +279,7 @@ protected function getFooWithInlineService()
     {
         $this->services['foo_with_inline'] = $instance = new \Foo();
 
-        $instance->setBar($this->get('inlined'));
+        $instance->setBar(${($_ = isset($this->services['inlined']) ? $this->services['inlined'] : $this->getInlinedService()) && false ?: '_'});
 
         return $instance;
     }
@@ -321,7 +321,7 @@ protected function getMethodCall1Service()
      */
     protected function getNewFactoryServiceService()
     {
-        $this->services['new_factory_service'] = $instance = $this->get('new_factory')->getInstance();
+        $this->services['new_factory_service'] = $instance = ${($_ = isset($this->services['new_factory']) ? $this->services['new_factory'] : $this->getNewFactoryService()) && false ?: '_'}->getInstance();
 
         $instance->foo = 'bar';