Merge branch '4.4' into 5.2

derrabus · derrabus · commit b64ae4d4198f · 2021-04-07T18:07:52.000+02:00
* 4.4:
  [CS] Replace easy occurences of ?: with ??
diff --git a/src/Symfony/Bridge/Monolog/Formatter/VarDumperFormatter.php b/src/Symfony/Bridge/Monolog/Formatter/VarDumperFormatter.php
@@ -23,7 +23,7 @@ class VarDumperFormatter implements FormatterInterface
 
     public function __construct(VarCloner $cloner = null)
     {
-        $this->cloner = $cloner ?: new VarCloner();
+        $this->cloner = $cloner ?? new VarCloner();
     }
 
     /**
diff --git a/src/Symfony/Bridge/Twig/Extension/DumpExtension.php b/src/Symfony/Bridge/Twig/Extension/DumpExtension.php
@@ -74,7 +74,7 @@ public function dump(Environment $env, array $context): ?string
         }
 
         $dump = fopen('php://memory', 'r+');
-        $this->dumper = $this->dumper ?: new HtmlDumper();
+        $this->dumper = $this->dumper ?? new HtmlDumper();
         $this->dumper->setCharset($env->getCharset());
 
         foreach ($vars as $value) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
@@ -45,7 +45,7 @@ public function __construct(CacheClearerInterface $cacheClearer, Filesystem $fil
         parent::__construct();
 
         $this->cacheClearer = $cacheClearer;
-        $this->filesystem = $filesystem ?: new Filesystem();
+        $this->filesystem = $filesystem ?? new Filesystem();
     }
 
     /**
diff --git a/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php b/src/Symfony/Bundle/FrameworkBundle/Routing/Router.php
@@ -44,7 +44,7 @@ public function __construct(ContainerInterface $container, $resource, array $opt
     {
         $this->container = $container;
         $this->resource = $resource;
-        $this->context = $context ?: new RequestContext();
+        $this->context = $context ?? new RequestContext();
         $this->logger = $logger;
         $this->setOptions($options);
 
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php b/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
@@ -44,7 +44,7 @@ class WebProfilerExtension extends ProfilerExtension
 
     public function __construct(HtmlDumper $dumper = null)
     {
-        $this->dumper = $dumper ?: new HtmlDumper();
+        $this->dumper = $dumper ?? new HtmlDumper();
         $this->dumper->setOutput($this->output = fopen('php://memory', 'r+'));
     }
 
diff --git a/src/Symfony/Component/Asset/Package.php b/src/Symfony/Component/Asset/Package.php
@@ -29,7 +29,7 @@ class Package implements PackageInterface
     public function __construct(VersionStrategyInterface $versionStrategy, ContextInterface $context = null)
     {
         $this->versionStrategy = $versionStrategy;
-        $this->context = $context ?: new NullContext();
+        $this->context = $context ?? new NullContext();
     }
 
     /**
diff --git a/src/Symfony/Component/Config/Definition/Builder/TreeBuilder.php b/src/Symfony/Component/Config/Definition/Builder/TreeBuilder.php
@@ -25,7 +25,7 @@ class TreeBuilder implements NodeParentInterface
 
     public function __construct(string $name, string $type = 'array', NodeBuilder $builder = null)
     {
-        $builder = $builder ?: new NodeBuilder();
+        $builder = $builder ?? new NodeBuilder();
         $this->root = $builder->node($name, $type)->setParent($this);
     }
 
diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php b/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php
@@ -28,7 +28,7 @@ class OutputFormatterStyleStack implements ResetInterface
 
     public function __construct(OutputFormatterStyleInterface $emptyStyle = null)
     {
-        $this->emptyStyle = $emptyStyle ?: new OutputFormatterStyle();
+        $this->emptyStyle = $emptyStyle ?? new OutputFormatterStyle();
         $this->reset();
     }
 
diff --git a/src/Symfony/Component/Console/Output/Output.php b/src/Symfony/Component/Console/Output/Output.php
@@ -40,7 +40,7 @@ abstract class Output implements OutputInterface
     public function __construct(?int $verbosity = self::VERBOSITY_NORMAL, bool $decorated = false, OutputFormatterInterface $formatter = null)
     {
         $this->verbosity = null === $verbosity ? self::VERBOSITY_NORMAL : $verbosity;
-        $this->formatter = $formatter ?: new OutputFormatter();
+        $this->formatter = $formatter ?? new OutputFormatter();
         $this->formatter->setDecorated($decorated);
     }
 
diff --git a/src/Symfony/Component/CssSelector/Parser/Parser.php b/src/Symfony/Component/CssSelector/Parser/Parser.php
@@ -31,7 +31,7 @@ class Parser implements ParserInterface
 
     public function __construct(Tokenizer $tokenizer = null)
     {
-        $this->tokenizer = $tokenizer ?: new Tokenizer();
+        $this->tokenizer = $tokenizer ?? new Tokenizer();
     }
 
     /**
diff --git a/src/Symfony/Component/CssSelector/XPath/Translator.php b/src/Symfony/Component/CssSelector/XPath/Translator.php
@@ -50,7 +50,7 @@ class Translator implements TranslatorInterface
 
     public function __construct(ParserInterface $parser = null)
     {
-        $this->mainParser = $parser ?: new Parser();
+        $this->mainParser = $parser ?? new Parser();
 
         $this
             ->registerExtension(new Extension\NodeExtension())
diff --git a/src/Symfony/Component/DependencyInjection/Container.php b/src/Symfony/Component/DependencyInjection/Container.php
@@ -64,7 +64,7 @@ class Container implements ContainerInterface, ResetInterface
 
     public function __construct(ParameterBagInterface $parameterBag = null)
     {
-        $this->parameterBag = $parameterBag ?: new EnvPlaceholderParameterBag();
+        $this->parameterBag = $parameterBag ?? new EnvPlaceholderParameterBag();
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -357,7 +357,7 @@ public function getReflectionClass(?string $class, bool $throw = true): ?\Reflec
 
         if ($this->trackResources) {
             if (!$classReflector) {
-                $this->addResource($resource ?: new ClassExistenceResource($class, false));
+                $this->addResource($resource ?? new ClassExistenceResource($class, false));
             } elseif (!$classReflector->isInternal()) {
                 $path = $classReflector->getFileName();
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/IntegrationTest.php
@@ -168,7 +168,7 @@ public function testCanDecorateServiceLocator()
     public function testYamlContainerCompiles($directory, $actualServiceId, $expectedServiceId, ContainerBuilder $mainContainer = null)
     {
         // allow a container to be passed in, which might have autoconfigure settings
-        $container = $mainContainer ?: new ContainerBuilder();
+        $container = $mainContainer ?? new ContainerBuilder();
         $container->setResourceTracking(false);
         $loader = new YamlFileLoader($container, new FileLocator(__DIR__.'/../Fixtures/yaml/integration/'.$directory));
         $loader->load('main.yml');
diff --git a/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php b/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
@@ -36,7 +36,7 @@ class ExpressionLanguage
      */
     public function __construct(CacheItemPoolInterface $cache = null, array $providers = [])
     {
-        $this->cache = $cache ?: new ArrayAdapter();
+        $this->cache = $cache ?? new ArrayAdapter();
         $this->registerFunctions();
         foreach ($providers as $provider) {
             $this->registerProvider($provider);
diff --git a/src/Symfony/Component/Form/Extension/Core/CoreExtension.php b/src/Symfony/Component/Form/Extension/Core/CoreExtension.php
@@ -35,7 +35,7 @@ class CoreExtension extends AbstractExtension
     public function __construct(PropertyAccessorInterface $propertyAccessor = null, ChoiceListFactoryInterface $choiceListFactory = null, TranslatorInterface $translator = null)
     {
         $this->propertyAccessor = $propertyAccessor ?: PropertyAccess::createPropertyAccessor();
-        $this->choiceListFactory = $choiceListFactory ?: new CachingFactoryDecorator(new PropertyAccessDecorator(new DefaultChoiceListFactory(), $this->propertyAccessor));
+        $this->choiceListFactory = $choiceListFactory ?? new CachingFactoryDecorator(new PropertyAccessDecorator(new DefaultChoiceListFactory(), $this->propertyAccessor));
         $this->translator = $translator;
     }
 
diff --git a/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToArrayTransformer.php b/src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToArrayTransformer.php
@@ -42,7 +42,7 @@ public function __construct(string $inputTimezone = null, string $outputTimezone
 
         $this->fields = $fields;
         $this->pad = $pad;
-        $this->referenceDate = $referenceDate ?: new \DateTimeImmutable('1970-01-01 00:00:00');
+        $this->referenceDate = $referenceDate ?? new \DateTimeImmutable('1970-01-01 00:00:00');
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
@@ -56,7 +56,7 @@ class ChoiceType extends AbstractType
      */
     public function __construct(ChoiceListFactoryInterface $choiceListFactory = null, $translator = null)
     {
-        $this->choiceListFactory = $choiceListFactory ?: new CachingFactoryDecorator(
+        $this->choiceListFactory = $choiceListFactory ?? new CachingFactoryDecorator(
             new PropertyAccessDecorator(
                 new DefaultChoiceListFactory()
             )
diff --git a/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php b/src/Symfony/Component/Form/Extension/Csrf/EventListener/CsrfValidationListener.php
@@ -48,7 +48,7 @@ public function __construct(string $fieldName, CsrfTokenManagerInterface $tokenM
         $this->errorMessage = $errorMessage;
         $this->translator = $translator;
         $this->translationDomain = $translationDomain;
-        $this->serverParams = $serverParams ?: new ServerParams();
+        $this->serverParams = $serverParams ?? new ServerParams();
     }
 
     public function preSubmit(FormEvent $event)
diff --git a/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php b/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
@@ -32,7 +32,7 @@ class HttpFoundationRequestHandler implements RequestHandlerInterface
 
     public function __construct(ServerParams $serverParams = null)
     {
-        $this->serverParams = $serverParams ?: new ServerParams();
+        $this->serverParams = $serverParams ?? new ServerParams();
     }
 
     /**
diff --git a/src/Symfony/Component/Form/Extension/HttpFoundation/Type/FormTypeHttpFoundationExtension.php b/src/Symfony/Component/Form/Extension/HttpFoundation/Type/FormTypeHttpFoundationExtension.php
@@ -26,7 +26,7 @@ class FormTypeHttpFoundationExtension extends AbstractTypeExtension
 
     public function __construct(RequestHandlerInterface $requestHandler = null)
     {
-        $this->requestHandler = $requestHandler ?: new HttpFoundationRequestHandler();
+        $this->requestHandler = $requestHandler ?? new HttpFoundationRequestHandler();
     }
 
     /**
diff --git a/src/Symfony/Component/Form/FormFactoryBuilder.php b/src/Symfony/Component/Form/FormFactoryBuilder.php
@@ -180,7 +180,7 @@ public function getFormFactory()
             $extensions[] = new PreloadedExtension($this->types, $this->typeExtensions, $typeGuesser);
         }
 
-        $registry = new FormRegistry($extensions, $this->resolvedTypeFactory ?: new ResolvedFormTypeFactory());
+        $registry = new FormRegistry($extensions, $this->resolvedTypeFactory ?? new ResolvedFormTypeFactory());
 
         return new FormFactory($registry);
     }
diff --git a/src/Symfony/Component/Form/NativeRequestHandler.php b/src/Symfony/Component/Form/NativeRequestHandler.php
@@ -36,7 +36,7 @@ class NativeRequestHandler implements RequestHandlerInterface
 
     public function __construct(ServerParams $params = null)
     {
-        $this->serverParams = $params ?: new ServerParams();
+        $this->serverParams = $params ?? new ServerParams();
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/Session/Session.php b/src/Symfony/Component/HttpFoundation/Session/Session.php
@@ -39,14 +39,14 @@ class Session implements SessionInterface, \IteratorAggregate, \Countable
 
     public function __construct(SessionStorageInterface $storage = null, AttributeBagInterface $attributes = null, FlashBagInterface $flashes = null, callable $usageReporter = null)
     {
-        $this->storage = $storage ?: new NativeSessionStorage();
+        $this->storage = $storage ?? new NativeSessionStorage();
         $this->usageReporter = $usageReporter;
 
-        $attributes = $attributes ?: new AttributeBag();
+        $attributes = $attributes ?? new AttributeBag();
         $this->attributeName = $attributes->getName();
         $this->registerBag($attributes);
 
-        $flashes = $flashes ?: new FlashBag();
+        $flashes = $flashes ?? new FlashBag();
         $this->flashName = $flashes->getName();
         $this->registerBag($flashes);
     }
diff --git a/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php b/src/Symfony/Component/HttpKernel/Controller/ArgumentResolver.php
@@ -36,7 +36,7 @@ final class ArgumentResolver implements ArgumentResolverInterface
 
     public function __construct(ArgumentMetadataFactoryInterface $argumentMetadataFactory = null, iterable $argumentValueResolvers = [])
     {
-        $this->argumentMetadataFactory = $argumentMetadataFactory ?: new ArgumentMetadataFactory();
+        $this->argumentMetadataFactory = $argumentMetadataFactory ?? new ArgumentMetadataFactory();
         $this->argumentValueResolvers = $argumentValueResolvers ?: self::getDefaultArgumentValueResolvers();
     }
 
diff --git a/src/Symfony/Component/HttpKernel/HttpKernel.php b/src/Symfony/Component/HttpKernel/HttpKernel.php
@@ -60,7 +60,7 @@ public function __construct(EventDispatcherInterface $dispatcher, ControllerReso
     {
         $this->dispatcher = $dispatcher;
         $this->resolver = $resolver;
-        $this->requestStack = $requestStack ?: new RequestStack();
+        $this->requestStack = $requestStack ?? new RequestStack();
         $this->argumentResolver = $argumentResolver;
 
         if (null === $this->argumentResolver) {
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/TestSessionListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/TestSessionListenerTest.php
@@ -158,7 +158,7 @@ public function testDoesNotThrowIfRequestDoesNotHaveASession()
     private function filterResponse(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, Response $response = null)
     {
         $request->setSession($this->session);
-        $response = $response ?: new Response();
+        $response = $response ?? new Response();
         $kernel = $this->createMock(HttpKernelInterface::class);
         $event = new ResponseEvent($kernel, $request, $type, $response);
 
diff --git a/src/Symfony/Component/Mailer/Transport/AbstractTransport.php b/src/Symfony/Component/Mailer/Transport/AbstractTransport.php
@@ -35,7 +35,7 @@ abstract class AbstractTransport implements TransportInterface
     public function __construct(EventDispatcherInterface $dispatcher = null, LoggerInterface $logger = null)
     {
         $this->dispatcher = class_exists(Event::class) ? LegacyEventDispatcherProxy::decorate($dispatcher) : $dispatcher;
-        $this->logger = $logger ?: new NullLogger();
+        $this->logger = $logger ?? new NullLogger();
     }
 
     /**
diff --git a/src/Symfony/Component/Mailer/Transport/Smtp/SmtpTransport.php b/src/Symfony/Component/Mailer/Transport/Smtp/SmtpTransport.php
@@ -44,7 +44,7 @@ public function __construct(AbstractStream $stream = null, EventDispatcherInterf
     {
         parent::__construct($dispatcher, $logger);
 
-        $this->stream = $stream ?: new SocketStream();
+        $this->stream = $stream ?? new SocketStream();
     }
 
     public function getStream(): AbstractStream
diff --git a/src/Symfony/Component/Messenger/Bridge/Amqp/Tests/Transport/AmqpTransportTest.php b/src/Symfony/Component/Messenger/Bridge/Amqp/Tests/Transport/AmqpTransportTest.php
@@ -54,8 +54,8 @@ public function testReceivesMessages()
 
     private function getTransport(SerializerInterface $serializer = null, Connection $connection = null): AmqpTransport
     {
-        $serializer = $serializer ?: $this->createMock(SerializerInterface::class);
-        $connection = $connection ?: $this->createMock(Connection::class);
+        $serializer = $serializer ?? $this->createMock(SerializerInterface::class);
+        $connection = $connection ?? $this->createMock(Connection::class);
 
         return new AmqpTransport($connection, $serializer);
     }
diff --git a/src/Symfony/Component/Messenger/Bridge/Beanstalkd/Tests/Transport/BeanstalkdTransportTest.php b/src/Symfony/Component/Messenger/Bridge/Beanstalkd/Tests/Transport/BeanstalkdTransportTest.php
@@ -52,8 +52,8 @@ public function testReceivesMessages()
 
     private function getTransport(SerializerInterface $serializer = null, Connection $connection = null): BeanstalkdTransport
     {
-        $serializer = $serializer ?: $this->createMock(SerializerInterface::class);
-        $connection = $connection ?: $this->createMock(Connection::class);
+        $serializer = $serializer ?? $this->createMock(SerializerInterface::class);
+        $connection = $connection ?? $this->createMock(Connection::class);
 
         return new BeanstalkdTransport($connection, $serializer);
     }
diff --git a/src/Symfony/Component/Messenger/Bridge/Redis/Tests/Transport/RedisTransportTest.php b/src/Symfony/Component/Messenger/Bridge/Redis/Tests/Transport/RedisTransportTest.php
@@ -52,8 +52,8 @@ public function testReceivesMessages()
 
     private function getTransport(SerializerInterface $serializer = null, Connection $connection = null): RedisTransport
     {
-        $serializer = $serializer ?: $this->createMock(SerializerInterface::class);
-        $connection = $connection ?: $this->createMock(Connection::class);
+        $serializer = $serializer ?? $this->createMock(SerializerInterface::class);
+        $connection = $connection ?? $this->createMock(Connection::class);
 
         return new RedisTransport($connection, $serializer);
     }
diff --git a/src/Symfony/Component/Routing/Router.php b/src/Symfony/Component/Routing/Router.php
@@ -102,7 +102,7 @@ public function __construct(LoaderInterface $loader, $resource, array $options =
         $this->loader = $loader;
         $this->resource = $resource;
         $this->logger = $logger;
-        $this->context = $context ?: new RequestContext();
+        $this->context = $context ?? new RequestContext();
         $this->setOptions($options);
         $this->defaultLocale = $defaultLocale;
     }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/CompiledRedirectableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/CompiledRedirectableUrlMatcherTest.php
@@ -25,7 +25,7 @@ protected function getUrlMatcher(RouteCollection $routes, RequestContext $contex
         $compiledRoutes = $dumper->getCompiledRoutes();
 
         return $this->getMockBuilder(TestCompiledRedirectableUrlMatcher::class)
-            ->setConstructorArgs([$compiledRoutes, $context ?: new RequestContext()])
+            ->setConstructorArgs([$compiledRoutes, $context ?? new RequestContext()])
             ->setMethods(['redirect'])
             ->getMock();
     }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/CompiledUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/CompiledUrlMatcherTest.php
@@ -22,6 +22,6 @@ protected function getUrlMatcher(RouteCollection $routes, RequestContext $contex
     {
         $dumper = new CompiledUrlMatcherDumper($routes);
 
-        return new CompiledUrlMatcher($dumper->getCompiledRoutes(), $context ?: new RequestContext());
+        return new CompiledUrlMatcher($dumper->getCompiledRoutes(), $context ?? new RequestContext());
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/RedirectableUrlMatcherTest.php
@@ -211,6 +211,6 @@ public function testTrailingRequirementWithDefault_A()
 
     protected function getUrlMatcher(RouteCollection $routes, RequestContext $context = null)
     {
-        return $this->getMockForAbstractClass(RedirectableUrlMatcher::class, [$routes, $context ?: new RequestContext()]);
+        return $this->getMockForAbstractClass(RedirectableUrlMatcher::class, [$routes, $context ?? new RequestContext()]);
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/TraceableUrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/TraceableUrlMatcherTest.php
@@ -121,6 +121,6 @@ public function testRoutesWithConditions()
 
     protected function getUrlMatcher(RouteCollection $routes, RequestContext $context = null)
     {
-        return new TraceableUrlMatcher($routes, $context ?: new RequestContext());
+        return new TraceableUrlMatcher($routes, $context ?? new RequestContext());
     }
 }
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php b/src/Symfony/Component/Routing/Tests/Matcher/UrlMatcherTest.php
@@ -943,6 +943,6 @@ public function testRestrictiveTrailingRequirementWithStaticRouteAfter()
 
     protected function getUrlMatcher(RouteCollection $routes, RequestContext $context = null)
     {
-        return new UrlMatcher($routes, $context ?: new RequestContext());
+        return new UrlMatcher($routes, $context ?? new RequestContext());
     }
 }
diff --git a/src/Symfony/Component/Security/Csrf/CsrfTokenManager.php b/src/Symfony/Component/Security/Csrf/CsrfTokenManager.php
@@ -39,8 +39,8 @@ class CsrfTokenManager implements CsrfTokenManagerInterface
      */
     public function __construct(TokenGeneratorInterface $generator = null, TokenStorageInterface $storage = null, $namespace = null)
     {
-        $this->generator = $generator ?: new UriSafeTokenGenerator();
-        $this->storage = $storage ?: new NativeSessionTokenStorage();
+        $this->generator = $generator ?? new UriSafeTokenGenerator();
+        $this->storage = $storage ?? new NativeSessionTokenStorage();
 
         $superGlobalNamespaceGenerator = function () {
             return !empty($_SERVER['HTTPS']) && 'off' !== strtolower($_SERVER['HTTPS']) ? 'https-' : '';
diff --git a/src/Symfony/Component/Security/Http/Firewall/ContextListener.php b/src/Symfony/Component/Security/Http/Firewall/ContextListener.php
@@ -69,7 +69,7 @@ public function __construct(TokenStorageInterface $tokenStorage, iterable $userP
         $this->logger = $logger;
         $this->dispatcher = class_exists(Event::class) ? LegacyEventDispatcherProxy::decorate($dispatcher) : $dispatcher;
 
-        $this->trustResolver = $trustResolver ?: new AuthenticationTrustResolver(AnonymousToken::class, RememberMeToken::class);
+        $this->trustResolver = $trustResolver ?? new AuthenticationTrustResolver(AnonymousToken::class, RememberMeToken::class);
         $this->sessionTrackerEnabler = $sessionTrackerEnabler;
     }
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/ContextListenerTest.php
@@ -417,7 +417,7 @@ protected function runSessionOnKernelResponse($newToken, $original = null)
 
     private function handleEventWithPreviousSession($userProviders, UserInterface $user = null, RememberMeServicesInterface $rememberMeServices = null)
     {
-        $tokenUser = $user ?: new User('foo', 'bar');
+        $tokenUser = $user ?? new User('foo', 'bar');
         $session = new Session(new MockArraySessionStorage());
         $session->set('_security_context_key', serialize(new UsernamePasswordToken($tokenUser, '', 'context_key', ['ROLE_USER'])));
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php
diff --git a/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php b/src/Symfony/Component/Serializer/Encoder/JsonEncoder.php
diff --git a/src/Symfony/Component/Serializer/Encoder/YamlEncoder.php b/src/Symfony/Component/Serializer/Encoder/YamlEncoder.php
diff --git a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
diff --git a/src/Symfony/Component/Validator/ValidatorBuilder.php b/src/Symfony/Component/Validator/ValidatorBuilder.php
diff --git a/src/Symfony/Component/Workflow/Definition.php b/src/Symfony/Component/Workflow/Definition.php
diff --git a/src/Symfony/Component/Workflow/Metadata/InMemoryMetadataStore.php b/src/Symfony/Component/Workflow/Metadata/InMemoryMetadataStore.php
diff --git a/src/Symfony/Component/Workflow/StateMachine.php b/src/Symfony/Component/Workflow/StateMachine.php
diff --git a/src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php b/src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php
diff --git a/src/Symfony/Component/Workflow/Workflow.php b/src/Symfony/Component/Workflow/Workflow.php

Original file line number	Diff line number	Diff line change
`@@ -23,7 +23,7 @@ class VarDumperFormatter implements FormatterInterface`
`23`	`23`
`24`	`24`	`public function __construct(VarCloner $cloner = null)`
`25`	`25`	`{`
`26`		`- $this->cloner = $cloner ?: new VarCloner();`
	`26`	`+ $this->cloner = $cloner ?? new VarCloner();`
`27`	`27`	`}`
`28`	`28`
`29`	`29`	`/**`
Original file line number	Diff line number	Diff line change
`@@ -74,7 +74,7 @@ public function dump(Environment $env, array $context): ?string`
`74`	`74`	`}`
`75`	`75`
`76`	`76`	`$dump = fopen('php://memory', 'r+');`
`77`		`- $this->dumper = $this->dumper ?: new HtmlDumper();`
	`77`	`+ $this->dumper = $this->dumper ?? new HtmlDumper();`
`78`	`78`	`$this->dumper->setCharset($env->getCharset());`
`79`	`79`
`80`	`80`	`foreach ($vars as $value) {`
Original file line number	Diff line number	Diff line change
`@@ -45,7 +45,7 @@ public function __construct(CacheClearerInterface $cacheClearer, Filesystem $fil`
`45`	`45`	`parent::__construct();`
`46`	`46`
`47`	`47`	`$this->cacheClearer = $cacheClearer;`
`48`		`- $this->filesystem = $filesystem ?: new Filesystem();`
	`48`	`+ $this->filesystem = $filesystem ?? new Filesystem();`
`49`	`49`	`}`
`50`	`50`
`51`	`51`	`/**`
Original file line number	Diff line number	Diff line change
`@@ -44,7 +44,7 @@ public function __construct(ContainerInterface $container, $resource, array $opt`
`44`	`44`	`{`
`45`	`45`	`$this->container = $container;`
`46`	`46`	`$this->resource = $resource;`
`47`		`- $this->context = $context ?: new RequestContext();`
	`47`	`+ $this->context = $context ?? new RequestContext();`
`48`	`48`	`$this->logger = $logger;`
`49`	`49`	`$this->setOptions($options);`
`50`	`50`
Original file line number	Diff line number	Diff line change
`@@ -44,7 +44,7 @@ class WebProfilerExtension extends ProfilerExtension`
`44`	`44`
`45`	`45`	`public function __construct(HtmlDumper $dumper = null)`
`46`	`46`	`{`
`47`		`- $this->dumper = $dumper ?: new HtmlDumper();`
	`47`	`+ $this->dumper = $dumper ?? new HtmlDumper();`
`48`	`48`	`$this->dumper->setOutput($this->output = fopen('php://memory', 'r+'));`
`49`	`49`	`}`
`50`	`50`
Original file line number	Diff line number	Diff line change
`@@ -29,7 +29,7 @@ class Package implements PackageInterface`
`29`	`29`	`public function __construct(VersionStrategyInterface $versionStrategy, ContextInterface $context = null)`
`30`	`30`	`{`
`31`	`31`	`$this->versionStrategy = $versionStrategy;`
`32`		`- $this->context = $context ?: new NullContext();`
	`32`	`+ $this->context = $context ?? new NullContext();`
`33`	`33`	`}`
`34`	`34`
`35`	`35`	`/**`
Original file line number	Diff line number	Diff line change
`@@ -25,7 +25,7 @@ class TreeBuilder implements NodeParentInterface`
`25`	`25`
`26`	`26`	`public function __construct(string $name, string $type = 'array', NodeBuilder $builder = null)`
`27`	`27`	`{`
`28`		`- $builder = $builder ?: new NodeBuilder();`
	`28`	`+ $builder = $builder ?? new NodeBuilder();`
`29`	`29`	`$this->root = $builder->node($name, $type)->setParent($this);`
`30`	`30`	`}`
`31`	`31`
Original file line number	Diff line number	Diff line change
`@@ -28,7 +28,7 @@ class OutputFormatterStyleStack implements ResetInterface`
`28`	`28`
`29`	`29`	`public function __construct(OutputFormatterStyleInterface $emptyStyle = null)`
`30`	`30`	`{`
`31`		`- $this->emptyStyle = $emptyStyle ?: new OutputFormatterStyle();`
	`31`	`+ $this->emptyStyle = $emptyStyle ?? new OutputFormatterStyle();`
`32`	`32`	`$this->reset();`
`33`	`33`	`}`
`34`	`34`
Original file line number	Diff line number	Diff line change
`@@ -40,7 +40,7 @@ abstract class Output implements OutputInterface`
`40`	`40`	`public function __construct(?int $verbosity = self::VERBOSITY_NORMAL, bool $decorated = false, OutputFormatterInterface $formatter = null)`
`41`	`41`	`{`
`42`	`42`	`$this->verbosity = null === $verbosity ? self::VERBOSITY_NORMAL : $verbosity;`
`43`		`- $this->formatter = $formatter ?: new OutputFormatter();`
	`43`	`+ $this->formatter = $formatter ?? new OutputFormatter();`
`44`	`44`	`$this->formatter->setDecorated($decorated);`
`45`	`45`	`}`
`46`	`46`
Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,7 @@ class Parser implements ParserInterface`
`31`	`31`
`32`	`32`	`public function __construct(Tokenizer $tokenizer = null)`
`33`	`33`	`{`
`34`		`- $this->tokenizer = $tokenizer ?: new Tokenizer();`
	`34`	`+ $this->tokenizer = $tokenizer ?? new Tokenizer();`
`35`	`35`	`}`
`36`	`36`
`37`	`37`	`/**`