minor #11277 ordered use statements in code examples (OskarStark)

This PR was merged into the 3.4 branch.

Discussion
----------

ordered use statements in code examples

I know, that this could lead to massive merge conflicts, but if we would not merge it up, I could create a shiny new PullRequest against `4.2` and I am willing to merge it up and fix the conflicts, too!

Or does any thoughts about **not** to order the use statements exist, which I doesn't know?

There are a lot more todo, but before finishing this PR, I'd like to receive some feedback

Commits
-------

3506a7e ordered use statements in code examples

Author: OskarStark

best_practices/business-logic.rst

@@ -238,8 +238,8 @@ looking for mapping information::
 
     namespace AppBundle\Entity;
 
-    use Doctrine\ORM\Mapping as ORM;
     use Doctrine\Common\Collections\ArrayCollection;
+    use Doctrine\ORM\Mapping as ORM;
 
     /**
      * @ORM\Entity

best_practices/configuration.rst

@@ -137,8 +137,8 @@ whereas they cannot access the container parameters::
 
     namespace AppBundle\Repository;
 
-    use Doctrine\ORM\EntityRepository;
     use AppBundle\Entity\Post;
+    use Doctrine\ORM\EntityRepository;
 
     class PostRepository extends EntityRepository
     {

best_practices/forms.rst

@@ -21,11 +21,11 @@ form in its own PHP class::
 
     use AppBundle\Entity\Post;
     use Symfony\Component\Form\AbstractType;
+    use Symfony\Component\Form\Extension\Core\Type\DateTimeType;
+    use Symfony\Component\Form\Extension\Core\Type\EmailType;
+    use Symfony\Component\Form\Extension\Core\Type\TextareaType;
     use Symfony\Component\Form\FormBuilderInterface;
     use Symfony\Component\OptionsResolver\OptionsResolver;
-    use Symfony\Component\Form\Extension\Core\Type\TextareaType;
-    use Symfony\Component\Form\Extension\Core\Type\EmailType;
-    use Symfony\Component\Form\Extension\Core\Type\DateTimeType;
 
     class PostType extends AbstractType
     {
@@ -109,11 +109,11 @@ some developers configure form buttons in the controller::
 
     namespace AppBundle\Controller\Admin;
 
-    use Symfony\Component\HttpFoundation\Request;
-    use Symfony\Bundle\FrameworkBundle\Controller\Controller;
-    use Symfony\Component\Form\Extension\Core\Type\SubmitType;
     use AppBundle\Entity\Post;
     use AppBundle\Form\PostType;
+    use Symfony\Bundle\FrameworkBundle\Controller\Controller;
+    use Symfony\Component\Form\Extension\Core\Type\SubmitType;
+    use Symfony\Component\HttpFoundation\Request;
 
     class PostController extends Controller
     {

best_practices/security.rst

@@ -259,11 +259,11 @@ the same ``getAuthorEmail()`` logic you used above::
 
     namespace AppBundle\Security;
 
+    use AppBundle\Entity\Post;
     use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
     use Symfony\Component\Security\Core\Authorization\AccessDecisionManagerInterface;
     use Symfony\Component\Security\Core\Authorization\Voter\Voter;
     use Symfony\Component\Security\Core\User\UserInterface;
-    use AppBundle\Entity\Post;
 
     class PostVoter extends Voter
     {

bundles/configuration.rst

@@ -262,8 +262,8 @@ In your extension, you can load this and dynamically set its arguments::
     // src/Acme/SocialBundle/DependencyInjection/AcmeSocialExtension.php
     // ...
 
-    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
     use Symfony\Component\Config\FileLocator;
+    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 
     public function load(array $configs, ContainerBuilder $container)
     {

bundles/extension.rst

@@ -93,8 +93,8 @@ the extension!
 For instance, assume you have a file called ``services.xml`` in the
 ``Resources/config`` directory of your bundle, your ``load()`` method looks like::
 
-    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
     use Symfony\Component\Config\FileLocator;
+    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 
     // ...
     public function load(array $configs, ContainerBuilder $container)

bundles/prepend_extension.rst

@@ -28,9 +28,9 @@ To give an Extension the power to do this, it needs to implement
     // src/Acme/HelloBundle/DependencyInjection/AcmeHelloExtension.php
     namespace Acme\HelloBundle\DependencyInjection;
 
-    use Symfony\Component\HttpKernel\DependencyInjection\Extension;
-    use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
     use Symfony\Component\DependencyInjection\ContainerBuilder;
+    use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
+    use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 
     class AcmeHelloExtension extends Extension implements PrependExtensionInterface
     {

components/asset.rst

@@ -223,8 +223,8 @@ If you are also using the :doc:`HttpFoundation </components/http_foundation>`
 component in your project (for instance, in a Symfony application), the ``PathPackage``
 class can take into account the context of the current request::
 
-    use Symfony\Component\Asset\PathPackage;
     use Symfony\Component\Asset\Context\RequestStackContext;
+    use Symfony\Component\Asset\PathPackage;
     // ...
 
     $pathPackage = new PathPackage(
@@ -313,8 +313,8 @@ account the context of the current request. In this case, only the request
 scheme is considered, in order to select the appropriate base URL (HTTPs or
 protocol-relative URLs for HTTPs requests, any base URL for HTTP requests)::
 
-    use Symfony\Component\Asset\UrlPackage;
     use Symfony\Component\Asset\Context\RequestStackContext;
+    use Symfony\Component\Asset\UrlPackage;
     // ...
 
     $urlPackage = new UrlPackage(
@@ -339,9 +339,9 @@ In the following example, all packages use the same versioning strategy, but
 they all have different base paths::
 
     use Symfony\Component\Asset\Package;
+    use Symfony\Component\Asset\Packages;
     use Symfony\Component\Asset\PathPackage;
     use Symfony\Component\Asset\UrlPackage;
-    use Symfony\Component\Asset\Packages;
     // ...
 
     $versionStrategy = new StaticVersionStrategy('v1');

components/cache/adapters/php_array_cache_adapter.rst

@@ -8,8 +8,8 @@ Php Array Cache Adapter
 This adapter is a high performance cache for static data (e.g. application configuration)
 that is optimized and preloaded into OPcache memory storage::
 
-    use Symfony\Component\Cache\Adapter\PhpArrayAdapter;
     use Symfony\Component\Cache\Adapter\FilesystemAdapter;
+    use Symfony\Component\Cache\Adapter\PhpArrayAdapter;
 
     // somehow, decide it's time to warm up the cache!
     if ($needsWarmup) {

components/cache/cache_invalidation.rst

@@ -73,9 +73,9 @@ in the same place. By using two adapters, you can e.g. store some big cached ite
 on the filesystem or in the database and keep tags in a Redis database to sync all
 your fronts and have very fast invalidation checks::
 
-    use Symfony\Component\Cache\Adapter\TagAwareAdapter;
     use Symfony\Component\Cache\Adapter\FilesystemAdapter;
     use Symfony\Component\Cache\Adapter\RedisAdapter;
+    use Symfony\Component\Cache\Adapter\TagAwareAdapter;
 
     $cache = new TagAwareAdapter(
         // Adapter for cached items

components/cache/psr6_psr16_adapters.rst

@@ -36,8 +36,8 @@ instead. No problem! The Cache component provides the
 :class:`Symfony\\Component\\Cache\\Adapter\\SimpleCacheAdapter` class for exactly
 this use-case::
 
-    use Symfony\Component\Cache\Simple\FilesystemCache;
     use Symfony\Component\Cache\Adapter\SimpleCacheAdapter;
+    use Symfony\Component\Cache\Simple\FilesystemCache;
 
     // the PSR-16 cache object that you want to use
     $psr16Cache = new FilesystemCache();

components/config/definition.rst

@@ -52,8 +52,8 @@ implements the :class:`Symfony\\Component\\Config\\Definition\\ConfigurationInte
 
     namespace Acme\DatabaseConfiguration;
 
-    use Symfony\Component\Config\Definition\ConfigurationInterface;
     use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+    use Symfony\Component\Config\Definition\ConfigurationInterface;
 
     class DatabaseConfiguration implements ConfigurationInterface
     {
@@ -809,9 +809,9 @@ any value is not of the expected type, is mandatory and yet undefined, or
 could not be validated in some other way, an exception will be thrown.
 Otherwise the result is a clean array of configuration values::
 
-    use Symfony\Component\Yaml\Yaml;
-    use Symfony\Component\Config\Definition\Processor;
     use Acme\DatabaseConfiguration;
+    use Symfony\Component\Config\Definition\Processor;
+    use Symfony\Component\Yaml\Yaml;
 
     $config = Yaml::parse(
         file_get_contents(__DIR__.'/src/Matthias/config/config.yml')

components/console/events.rst

@@ -33,8 +33,8 @@ Just before executing any command, the ``ConsoleEvents::COMMAND`` event is
 dispatched. Listeners receive a
 :class:`Symfony\\Component\\Console\\Event\\ConsoleCommandEvent` event::
 
-    use Symfony\Component\Console\Event\ConsoleCommandEvent;
     use Symfony\Component\Console\ConsoleEvents;
+    use Symfony\Component\Console\Event\ConsoleCommandEvent;
 
     $dispatcher->addListener(ConsoleEvents::COMMAND, function (ConsoleCommandEvent $event) {
         // gets the input instance
@@ -64,8 +64,8 @@ will then *not* execute the command, but instead will return the code ``113``
 of the `reserved exit codes`_ for console commands that conform with the
 C/C++ standard::
 
-    use Symfony\Component\Console\Event\ConsoleCommandEvent;
     use Symfony\Component\Console\ConsoleEvents;
+    use Symfony\Component\Console\Event\ConsoleCommandEvent;
 
     $dispatcher->addListener(ConsoleEvents::COMMAND, function (ConsoleCommandEvent $event) {
         // gets the command to be executed
@@ -112,8 +112,8 @@ thrown by the application.
 Listeners receive a
 :class:`Symfony\\Component\\Console\\Event\\ConsoleErrorEvent` event::
 
-    use Symfony\Component\Console\Event\ConsoleErrorEvent;
     use Symfony\Component\Console\ConsoleEvents;
+    use Symfony\Component\Console\Event\ConsoleErrorEvent;
 
     $dispatcher->addListener(ConsoleEvents::ERROR, function (ConsoleErrorEvent $event) {
         $output = $event->getOutput();
@@ -146,8 +146,8 @@ listener (like sending logs, closing a database connection, sending emails,
 Listeners receive a
 :class:`Symfony\\Component\\Console\\Event\\ConsoleTerminateEvent` event::
 
-    use Symfony\Component\Console\Event\ConsoleTerminateEvent;
     use Symfony\Component\Console\ConsoleEvents;
+    use Symfony\Component\Console\Event\ConsoleTerminateEvent;
 
     $dispatcher->addListener(ConsoleEvents::TERMINATE, function (ConsoleTerminateEvent $event) {
         // gets the output

components/console/helpers/questionhelper.rst

@@ -344,8 +344,8 @@ Testing a Command that Expects Input
 If you want to write a unit test for a command which expects some kind of input
 from the command line, you need to set the inputs that the command expects::
 
-    use Symfony\Component\Console\Helper\QuestionHelper;
     use Symfony\Component\Console\Helper\HelperSet;
+    use Symfony\Component\Console\Helper\QuestionHelper;
     use Symfony\Component\Console\Tester\CommandTester;
 
     // ...

components/console/helpers/table.rst

@@ -192,8 +192,8 @@ Spanning Multiple Columns and Rows
 To make a table cell that spans multiple columns you can use a :class:`Symfony\\Component\\Console\\Helper\\TableCell`::
 
     use Symfony\Component\Console\Helper\Table;
-    use Symfony\Component\Console\Helper\TableSeparator;
     use Symfony\Component\Console\Helper\TableCell;
+    use Symfony\Component\Console\Helper\TableSeparator;
 
     $table = new Table($output);
     $table

components/console/logger.rst

@@ -39,8 +39,8 @@ You can rely on the logger to use this dependency inside a command::
     use Acme\MyDependency;
     use Symfony\Component\Console\Command\Command;
     use Symfony\Component\Console\Input\InputInterface;
-    use Symfony\Component\Console\Output\OutputInterface;
     use Symfony\Component\Console\Logger\ConsoleLogger;
+    use Symfony\Component\Console\Output\OutputInterface;
 
     class MyCommand extends Command
     {

components/dependency_injection.rst

@@ -198,8 +198,8 @@ files. To do this you also need to install
 
 Loading an XML config file::
 
-    use Symfony\Component\DependencyInjection\ContainerBuilder;
     use Symfony\Component\Config\FileLocator;
+    use Symfony\Component\DependencyInjection\ContainerBuilder;
     use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 
     $containerBuilder = new ContainerBuilder();
@@ -208,8 +208,8 @@ Loading an XML config file::
 
 Loading a YAML config file::
 
-    use Symfony\Component\DependencyInjection\ContainerBuilder;
     use Symfony\Component\Config\FileLocator;
+    use Symfony\Component\DependencyInjection\ContainerBuilder;
     use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
 
     $containerBuilder = new ContainerBuilder();
@@ -233,8 +233,8 @@ Loading a YAML config file::
 If you *do* want to use PHP to create the services then you can move this
 into a separate config file and load it in a similar way::
 
-    use Symfony\Component\DependencyInjection\ContainerBuilder;
     use Symfony\Component\Config\FileLocator;
+    use Symfony\Component\DependencyInjection\ContainerBuilder;
     use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
 
     $containerBuilder = new ContainerBuilder();

components/dependency_injection/compilation.rst

@@ -57,10 +57,10 @@ added but are processed when the container's ``compile()`` method is called.
 
 A very simple extension may just load configuration files into the container::
 
+    use Symfony\Component\Config\FileLocator;
     use Symfony\Component\DependencyInjection\ContainerBuilder;
-    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
     use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
-    use Symfony\Component\Config\FileLocator;
+    use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 
     class AcmeDemoExtension implements ExtensionInterface
     {
@@ -113,8 +113,8 @@ If this file is loaded into the configuration then the values in it are
 only processed when the container is compiled at which point the Extensions
 are loaded::
 
-    use Symfony\Component\DependencyInjection\ContainerBuilder;
     use Symfony\Component\Config\FileLocator;
+    use Symfony\Component\DependencyInjection\ContainerBuilder;
     use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
 
     $containerBuilder = new ContainerBuilder();

components/event_dispatcher.rst

@@ -200,8 +200,8 @@ determine which instance is passed.
         use Symfony\Component\DependencyInjection\ContainerBuilder;
         use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
         use Symfony\Component\DependencyInjection\Reference;
-        use Symfony\Component\EventDispatcher\EventDispatcher;
         use Symfony\Component\EventDispatcher\DependencyInjection\RegisterListenersPass;
+        use Symfony\Component\EventDispatcher\EventDispatcher;
 
         $containerBuilder = new ContainerBuilder(new ParameterBag());
         // register the compiler pass that handles the 'kernel.event_listener'
@@ -252,8 +252,8 @@ order. Start by creating this custom event class and documenting it::
 
     namespace Acme\Store\Event;
 
-    use Symfony\Component\EventDispatcher\Event;
     use Acme\Store\Order;
+    use Symfony\Component\EventDispatcher\Event;
 
     /**
      * The order.placed event is dispatched each time an order is created
@@ -295,8 +295,8 @@ method notifies all listeners of the given event. It takes two arguments:
 the name of the event to dispatch and the ``Event`` instance to pass to
 each listener of that event::
 
-    use Acme\Store\Order;
     use Acme\Store\Event\OrderPlacedEvent;
+    use Acme\Store\Order;
 
     // the order is somehow created or retrieved
     $order = new Order();
@@ -333,10 +333,10 @@ Take the following example of a subscriber that subscribes to the
 
     namespace Acme\Store\Event;
 
+    use Acme\Store\Event\OrderPlacedEvent;
     use Symfony\Component\EventDispatcher\EventSubscriberInterface;
     use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
     use Symfony\Component\HttpKernel\KernelEvents;
-    use Acme\Store\Event\OrderPlacedEvent;
 
     class StoreSubscriber implements EventSubscriberInterface
     {

components/expression_language/caching.rst

@@ -31,8 +31,8 @@ uses an :class:`Symfony\\Component\\Cache\\Adapter\\ArrayAdapter`). You can
 customize this by creating a custom cache pool or using one of the available
 ones and injecting this using the constructor::
 
-    use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
     use Symfony\Component\Cache\Adapter\RedisAdapter;
+    use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
 
     $cache = new RedisAdapter(...);
     $expressionLanguage = new ExpressionLanguage($cache);

components/filesystem.rst

@@ -21,8 +21,8 @@ Usage
 The :class:`Symfony\\Component\\Filesystem\\Filesystem` class is the unique
 endpoint for filesystem operations::
 
-    use Symfony\Component\Filesystem\Filesystem;
     use Symfony\Component\Filesystem\Exception\IOExceptionInterface;
+    use Symfony\Component\Filesystem\Filesystem;
 
     $filesystem = new Filesystem();