symfony · fabpot · Jul 18, 2019 · Jul 10, 2019
diff --git a/UPGRADE-4.4.md b/UPGRADE-4.4.md
@@ -6,6 +6,12 @@ Cache
 
  * Added argument `$prefix` to `AdapterInterface::clear()`
 
+Debug
+-----
+
+ * Deprecated `FlattenException`, use the `FlattenException` of the `ErrorRenderer` component
+ * Deprecated the whole component in favor of `ErrorHandler` component
+
 DependencyInjection
 -------------------
 

diff --git a/UPGRADE-5.0.md b/UPGRADE-5.0.md
@@ -51,6 +51,11 @@ Console
    $processHelper->run($output, Process::fromShellCommandline('ls -l'));
    ```
 
+Debug
+-----
+
+ * Removed the component
+
 DependencyInjection
 -------------------
 

diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
@@ -18,7 +18,8 @@
 use PHPUnit\Util\Blacklist;
 use Symfony\Bridge\PhpUnit\ClockMock;
 use Symfony\Bridge\PhpUnit\DnsMock;
-use Symfony\Component\Debug\DebugClassLoader;
+use Symfony\Component\Debug\DebugClassLoader as LegacyDebugClassLoader;
+use Symfony\Component\ErrorHandler\DebugClassLoader;
 
 /**
  * PHP 5.3 compatible trait-like shared implementation.
@@ -53,7 +54,7 @@ public function __construct(array $mockedNamespaces = array())
             Blacklist::$blacklistedClassNames['\Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerTrait'] = 2;
         }
 
-        $enableDebugClassLoader = class_exists('Symfony\Component\Debug\DebugClassLoader');
+        $enableDebugClassLoader = class_exists(DebugClassLoader::class) || class_exists(LegacyDebugClassLoader::class);
 
         foreach ($mockedNamespaces as $type => $namespaces) {
             if (!\is_array($namespaces)) {
@@ -74,7 +75,11 @@ public function __construct(array $mockedNamespaces = array())
             }
         }
         if ($enableDebugClassLoader) {
-            DebugClassLoader::enable();
+            if (class_exists(DebugClassLoader::class)) {
+                DebugClassLoader::enable();
+            } else {
+                LegacyDebugClassLoader::enable();
+            }
         }
         if (self::$globallyEnabled) {
             $this->state = -2;

diff --git a/src/Symfony/Bridge/PhpUnit/composer.json b/src/Symfony/Bridge/PhpUnit/composer.json
@@ -21,7 +21,7 @@
         "php": ">=5.5.9"
     },
     "suggest": {
-        "symfony/debug": "For tracking deprecated interfaces usages at runtime with DebugClassLoader"
+        "symfony/error-handler": "For tracking deprecated interfaces usages at runtime with DebugClassLoader"
     },
     "conflict": {
         "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0"

diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Application.php b/src/Symfony/Bundle/FrameworkBundle/Console/Application.php
@@ -19,8 +19,8 @@
 use Symfony\Component\Console\Output\ConsoleOutputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
-use Symfony\Component\Debug\Exception\FatalThrowableError;
 use Symfony\Component\DependencyInjection\ContainerAwareInterface;
+use Symfony\Component\ErrorHandler\Exception\FatalThrowableError;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
 use Symfony\Component\HttpKernel\Kernel;
 use Symfony\Component\HttpKernel\KernelInterface;

diff --git a/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php b/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php
@@ -29,10 +29,10 @@
 use Symfony\Component\Cache\DependencyInjection\CachePoolPrunerPass;
 use Symfony\Component\Config\Resource\ClassExistenceResource;
 use Symfony\Component\Console\DependencyInjection\AddConsoleCommandPass;
-use Symfony\Component\Debug\ErrorHandler;
 use Symfony\Component\DependencyInjection\Compiler\PassConfig;
 use Symfony\Component\DependencyInjection\Compiler\RegisterReverseContainerPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\ErrorHandler\ErrorHandler;
 use Symfony\Component\ErrorRenderer\DependencyInjection\ErrorRendererPass;
 use Symfony\Component\EventDispatcher\DependencyInjection\RegisterListenersPass;
 use Symfony\Component\Form\DependencyInjection\FormPass;

diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -70,7 +70,6 @@
         "symfony/asset": "<3.4",
         "symfony/browser-kit": "<4.3",
         "symfony/console": "<4.3",
-        "symfony/debug": "<4.4",
         "symfony/dotenv": "<4.2",
         "symfony/dom-crawler": "<4.3",
         "symfony/form": "<4.3",

diff --git a/src/Symfony/Component/Debug/BufferingLogger.php b/src/Symfony/Component/Debug/BufferingLogger.php
@@ -13,10 +13,14 @@
 
 use Psr\Log\AbstractLogger;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', BufferingLogger::class, \Symfony\Component\ErrorHandler\BufferingLogger::class), E_USER_DEPRECATED);
+
 /**
  * A buffering logger that stacks logs for later.
  *
  * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\BufferingLogger instead.
  */
 class BufferingLogger extends AbstractLogger
 {

diff --git a/src/Symfony/Component/Debug/CHANGELOG.md b/src/Symfony/Component/Debug/CHANGELOG.md
@@ -5,6 +5,7 @@ CHANGELOG
 -----
 
  * deprecated `FlattenException`, use the `FlattenException` of the `ErrorRenderer` component
+ * deprecated the whole component in favor of the `ErrorHandler` component
 
 4.3.0
 -----

diff --git a/src/Symfony/Component/Debug/Debug.php b/src/Symfony/Component/Debug/Debug.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\Debug;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', Debug::class, \Symfony\Component\ErrorHandler\Debug::class), E_USER_DEPRECATED);
+
 /**
  * Registers all the debug tools.
  *
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\Debug instead.
  */
 class Debug
 {

diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -13,6 +13,8 @@
 
 use PHPUnit\Framework\MockObject\Matcher\StatelessInvocation;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', DebugClassLoader::class, \Symfony\Component\ErrorHandler\DebugClassLoader::class), E_USER_DEPRECATED);
+
 /**
  * Autoloader checking if the class is really defined in the file found.
  *
@@ -24,6 +26,8 @@
  * @author Christophe Coevoet <stof@notk.org>
  * @author Nicolas Grekas <p@tchwork.com>
  * @author Guilhem Niot <guilhem.niot@gmail.com>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\DebugClassLoader instead.
  */
 class DebugClassLoader
 {

diff --git a/src/Symfony/Component/Debug/ErrorHandler.php b/src/Symfony/Component/Debug/ErrorHandler.php
@@ -23,6 +23,8 @@
 use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
 use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ErrorHandler::class, \Symfony\Component\ErrorHandler\ErrorHandler::class), E_USER_DEPRECATED);
+
 /**
  * A generic ErrorHandler for the PHP engine.
  *
@@ -47,6 +49,8 @@
  * @author Grégoire Pineau <lyrixx@lyrixx.info>
  *
  * @final since Symfony 4.3
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\ErrorHandler instead.
  */
 class ErrorHandler
 {

diff --git a/src/Symfony/Component/Debug/Exception/ClassNotFoundException.php b/src/Symfony/Component/Debug/Exception/ClassNotFoundException.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\Debug\Exception;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ClassNotFoundException::class, \Symfony\Component\ErrorHandler\Exception\ClassNotFoundException::class), E_USER_DEPRECATED);
+
 /**
  * Class (or Trait or Interface) Not Found Exception.
  *
  * @author Konstanton Myakshin <koc-dp@yandex.ru>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\Exception\ClassNotFoundException instead.
  */
 class ClassNotFoundException extends FatalErrorException
 {

diff --git a/src/Symfony/Component/Debug/Exception/FatalErrorException.php b/src/Symfony/Component/Debug/Exception/FatalErrorException.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\Debug\Exception;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', FatalErrorException::class, \Symfony\Component\ErrorHandler\Exception\FatalErrorException::class), E_USER_DEPRECATED);
+
 /**
  * Fatal Error Exception.
  *
  * @author Konstanton Myakshin <koc-dp@yandex.ru>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\Exception\FatalErrorException instead.
  */
 class FatalErrorException extends \ErrorException
 {

diff --git a/src/Symfony/Component/Debug/Exception/FatalThrowableError.php b/src/Symfony/Component/Debug/Exception/FatalThrowableError.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\Debug\Exception;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', FatalThrowableError::class, \Symfony\Component\ErrorHandler\Exception\FatalThrowableError::class), E_USER_DEPRECATED);
+
 /**
  * Fatal Throwable Error.
  *
  * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\Exception\FatalThrowableError instead.
  */
 class FatalThrowableError extends FatalErrorException
 {

diff --git a/src/Symfony/Component/Debug/Exception/FlattenException.php b/src/Symfony/Component/Debug/Exception/FlattenException.php
@@ -14,7 +14,7 @@
 use Symfony\Component\HttpFoundation\Exception\RequestExceptionInterface;
 use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
 
-@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "Symfony\Component\ErrorRenderer\Exception\FlattenException" instead.', FlattenException::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', FlattenException::class, \Symfony\Component\ErrorRenderer\Exception\FlattenException::class), E_USER_DEPRECATED);
 
 /**
  * FlattenException wraps a PHP Error or Exception to be able to serialize it.

diff --git a/src/Symfony/Component/Debug/Exception/OutOfMemoryException.php b/src/Symfony/Component/Debug/Exception/OutOfMemoryException.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\Debug\Exception;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', OutOfMemoryException::class, \Symfony\Component\ErrorHandler\Exception\OutOfMemoryException::class), E_USER_DEPRECATED);
+
 /**
  * Out of memory exception.
  *
  * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\Exception\OutOfMemoryException instead.
  */
 class OutOfMemoryException extends FatalErrorException
 {

diff --git a/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php b/src/Symfony/Component/Debug/Exception/SilencedErrorContext.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\Debug\Exception;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', SilencedErrorContext::class, \Symfony\Component\ErrorHandler\Exception\SilencedErrorContext::class), E_USER_DEPRECATED);
+
 /**
  * Data Object that represents a Silenced Error.
  *
  * @author Grégoire Pineau <lyrixx@lyrixx.info>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\Exception\SilencedErrorContext instead.
  */
 class SilencedErrorContext implements \JsonSerializable
 {

diff --git a/src/Symfony/Component/Debug/Exception/UndefinedFunctionException.php b/src/Symfony/Component/Debug/Exception/UndefinedFunctionException.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\Debug\Exception;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', UndefinedFunctionException::class, \Symfony\Component\ErrorHandler\Exception\UndefinedFunctionException::class), E_USER_DEPRECATED);
+
 /**
  * Undefined Function Exception.
  *
  * @author Konstanton Myakshin <koc-dp@yandex.ru>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\Exception\UndefinedFunctionException instead.
  */
 class UndefinedFunctionException extends FatalErrorException
 {

diff --git a/src/Symfony/Component/Debug/Exception/UndefinedMethodException.php b/src/Symfony/Component/Debug/Exception/UndefinedMethodException.php
@@ -11,10 +11,14 @@
 
 namespace Symfony\Component\Debug\Exception;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', UndefinedMethodException::class, \Symfony\Component\ErrorHandler\Exception\UndefinedMethodException::class), E_USER_DEPRECATED);
+
 /**
  * Undefined Method Exception.
  *
  * @author Grégoire Pineau <lyrixx@lyrixx.info>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\Exception\UndefinedMethodException instead.
  */
 class UndefinedMethodException extends FatalErrorException
 {

diff --git a/src/Symfony/Component/Debug/ExceptionHandler.php b/src/Symfony/Component/Debug/ExceptionHandler.php
@@ -15,6 +15,8 @@
 use Symfony\Component\Debug\Exception\OutOfMemoryException;
 use Symfony\Component\HttpKernel\Debug\FileLinkFormatter;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ExceptionHandler::class, \Symfony\Component\ErrorHandler\ExceptionHandler::class), E_USER_DEPRECATED);
+
 /**
  * ExceptionHandler converts an exception to a Response object.
  *
@@ -28,6 +30,8 @@
  * @author Nicolas Grekas <p@tchwork.com>
  *
  * @final since Symfony 4.3
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\ExceptionHandler instead.
  */
 class ExceptionHandler
 {

diff --git a/src/Symfony/Component/Debug/FatalErrorHandler/ClassNotFoundFatalErrorHandler.php b/src/Symfony/Component/Debug/FatalErrorHandler/ClassNotFoundFatalErrorHandler.php
@@ -17,10 +17,14 @@
 use Symfony\Component\Debug\Exception\ClassNotFoundException;
 use Symfony\Component\Debug\Exception\FatalErrorException;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ClassNotFoundFatalErrorHandler::class, \Symfony\Component\ErrorHandler\FatalErrorHandler\ClassNotFoundFatalErrorHandler::class), E_USER_DEPRECATED);
+
 /**
  * ErrorHandler for classes that do not exist.
  *
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\FatalErrorHandler\ClassNotFoundFatalErrorHandler instead.
  */
 class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
 {

diff --git a/src/Symfony/Component/Debug/FatalErrorHandler/FatalErrorHandlerInterface.php b/src/Symfony/Component/Debug/FatalErrorHandler/FatalErrorHandlerInterface.php
@@ -13,10 +13,14 @@
 
 use Symfony\Component\Debug\Exception\FatalErrorException;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', FatalErrorHandlerInterface::class, \Symfony\Component\ErrorHandler\FatalErrorHandler\FatalErrorHandlerInterface::class), E_USER_DEPRECATED);
+
 /**
  * Attempts to convert fatal errors to exceptions.
  *
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\FatalErrorHandler\FatalErrorHandlerInterface instead.
  */
 interface FatalErrorHandlerInterface
 {

diff --git a/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php b/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php
@@ -14,10 +14,14 @@
 use Symfony\Component\Debug\Exception\FatalErrorException;
 use Symfony\Component\Debug\Exception\UndefinedFunctionException;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', UndefinedFunctionFatalErrorHandler::class, \Symfony\Component\ErrorHandler\FatalErrorHandler\UndefinedFunctionFatalErrorHandler::class), E_USER_DEPRECATED);
+
 /**
  * ErrorHandler for undefined functions.
  *
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\FatalErrorHandler\UndefinedFunctionFatalErrorHandler instead.
  */
 class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
 {

diff --git a/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedMethodFatalErrorHandler.php b/src/Symfony/Component/Debug/FatalErrorHandler/UndefinedMethodFatalErrorHandler.php
@@ -14,10 +14,14 @@
 use Symfony\Component\Debug\Exception\FatalErrorException;
 use Symfony\Component\Debug\Exception\UndefinedMethodException;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', UndefinedMethodFatalErrorHandler::class, \Symfony\Component\ErrorHandler\FatalErrorHandler\UndefinedMethodFatalErrorHandler::class), E_USER_DEPRECATED);
+
 /**
  * ErrorHandler for undefined methods.
  *
  * @author Grégoire Pineau <lyrixx@lyrixx.info>
+ *
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\FatalErrorHandler\UndefinedMethodFatalErrorHandler instead.
  */
 class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
 {

diff --git a/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php b/src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php
@@ -14,6 +14,9 @@
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Debug\DebugClassLoader;
 
+/**
+ * @group legacy
+ */
 class DebugClassLoaderTest extends TestCase
 {
     /**

diff --git a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
@@ -25,6 +25,8 @@
  *
  * @author Robert Schönthal <seroscho@googlemail.com>
  * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @group legacy
  */
 class ErrorHandlerTest extends TestCase
 {

diff --git a/src/Symfony/Component/Debug/Tests/ExceptionHandlerTest.php b/src/Symfony/Component/Debug/Tests/ExceptionHandlerTest.php
@@ -19,6 +19,9 @@
 
 require_once __DIR__.'/HeaderMock.php';
 
+/**
+ * @group legacy
+ */
 class ExceptionHandlerTest extends TestCase
 {
     protected function setUp()
-Original file line number
+Diff line change
@@ Expand Up / @@ -51,6 +51,11 @@ Console @@
        $processHelper->run($output, Process::fromShellCommandline('ls -l'));
        ```
+    Debug
+    -----
+     * Removed the component
     DependencyInjection
     -------------------
@@ Expand Down @@