Issue #1828616 by Berdir, tstoeckler: AnnotatedClassDiscovery is not finding...

Issue #1828616 by Berdir, tstoeckler: AnnotatedClassDiscovery is not finding plugins in Drupal\(Core|Component)\COMPONENT_NAME\Plugin directory.

core/lib/Drupal/Core/DrupalKernel.php

@@ -408,8 +408,16 @@ protected function buildContainer() {
 
     // Get a list of namespaces and put it onto the container.
     $namespaces = $this->getModuleNamespaces($this->getModuleFileNames());
-    $namespaces['Drupal\Core'] = DRUPAL_ROOT . '/core/lib';
-    $namespaces['Drupal\Component'] = DRUPAL_ROOT . '/core/lib';
+    // Add all components in \Drupal\Core and \Drupal\Component that have a
+    // Plugin directory.
+    foreach (array('Core', 'Component') as $parent_directory) {
+      $path = DRUPAL_ROOT . '/core/lib/Drupal/' . $parent_directory;
+      foreach (new \DirectoryIterator($path) as $component) {
+        if (!$component->isDot() && is_dir($component->getPathname() . '/Plugin')) {
+          $namespaces['Drupal\Core\\' . $component->getFilename()] = DRUPAL_ROOT . '/core/lib';
+        }
+      }
+    }
     $container->setParameter('container.namespaces', $namespaces);
 
     // Register synthetic services.

core/lib/Drupal/Core/Plugin/Validation/Constraint/BundleConstraint.php → core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/BundleConstraint.php

@@ -5,7 +5,7 @@
  * Contains \Drupal\Core\Validation\Constraint\BundleConstraint.
  */
 
-namespace Drupal\Core\Plugin\Validation\Constraint;
+namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
 
 use Symfony\Component\Validator\Constraint;
 use Drupal\Component\Annotation\Plugin;

core/lib/Drupal/Core/Plugin/Validation/Constraint/BundleConstraintValidator.php → core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/BundleConstraintValidator.php

@@ -2,10 +2,10 @@
 
 /**
  * @file
- * Contains \Drupal\Core\Plugin\Validation\Constraint\BundleConstraintValidator.
+ * Contains \Drupal\Core\Validation\Plugin\Validation\Constraint\BundleConstraintValidator.
  */
 
-namespace Drupal\Core\Plugin\Validation\Constraint;
+namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
 
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\ConstraintValidator;

core/lib/Drupal/Core/Plugin/Validation/Constraint/EntityTypeConstraint.php → core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/EntityTypeConstraint.php

@@ -5,7 +5,7 @@
  * Contains \Drupal\Core\Validation\Constraint\EntityTypeConstraint.
  */
 
-namespace Drupal\Core\Plugin\Validation\Constraint;
+namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
 
 use Symfony\Component\Validator\Constraint;
 use Drupal\Component\Annotation\Plugin;

core/lib/Drupal/Core/Plugin/Validation/Constraint/EntityTypeConstraintValidator.php → core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/EntityTypeConstraintValidator.php

@@ -2,10 +2,10 @@
 
 /**
  * @file
- * Contains \Drupal\Core\Plugin\Validation\Constraint\EntityTypeConstraintValidator.
+ * Contains \Drupal\Core\Validation\Plugin\Validation\Constraint\EntityTypeConstraintValidator.
  */
 
-namespace Drupal\Core\Plugin\Validation\Constraint;
+namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
 
 use Drupal\Core\Entity\EntityInterface;
 use Symfony\Component\Validator\Constraint;

core/lib/Drupal/Core/Plugin/Validation/Constraint/LengthConstraint.php → core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/LengthConstraint.php

@@ -2,10 +2,10 @@
 
 /**
  * @file
- * Contains \Drupal\Core\Plugin\Validation\Constraint\LengthConstraint.
+ * Contains \Drupal\Core\Validation\Plugin\Validation\Constraint\LengthConstraint.
  */
 
-namespace Drupal\Core\Plugin\Validation\Constraint;
+namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
 
 use Drupal\Component\Annotation\Plugin;
 use Drupal\Core\Annotation\Translation;

core/lib/Drupal/Core/Plugin/Validation/Constraint/PrimitiveTypeConstraint.php → core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraint.php

@@ -2,10 +2,10 @@
 
 /**
  * @file
- * Contains \Drupal\Core\Plugin\Validation\Constraint\PrimitiveTypeConstraint.
+ * Contains \Drupal\Core\Validation\Plugin\Validation\Constraint\PrimitiveTypeConstraint.
  */
 
-namespace Drupal\Core\Plugin\Validation\Constraint;
+namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
 
 use Drupal\Component\Annotation\Plugin;
 use Drupal\Core\Annotation\Translation;

core/lib/Drupal/Core/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidator.php → core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidator.php

@@ -2,10 +2,10 @@
 
 /**
  * @file
- * Contains \Drupal\Core\Plugin\Validation\Constraint\PrimitiveTypeConstraintValidator.
+ * Contains \Drupal\Core\Validation\Plugin\Validation\Constraint\PrimitiveTypeConstraintValidator.
  */
 
-namespace Drupal\Core\Plugin\Validation\Constraint;
+namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
 
 use DateInterval;
 use Drupal\Core\TypedData\Primitive;

core/lib/Drupal/Core/Plugin/Validation/Constraint/RangeConstraint.php → core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/RangeConstraint.php

@@ -2,10 +2,10 @@
 
 /**
  * @file
- * Contains \Drupal\Core\Plugin\Validation\Constraint\RangeConstraint.
+ * Contains \Drupal\Core\Validation\Plugin\Validation\Constraint\RangeConstraint.
  */
 
-namespace Drupal\Core\Plugin\Validation\Constraint;
+namespace Drupal\Core\Validation\Plugin\Validation\Constraint;
 
 use Drupal\Component\Annotation\Plugin;
 use Drupal\Core\Annotation\Translation;