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[yaffs-website] / web / core / lib / Drupal / Core / Validation / ConstraintManager.php

diff --git a/web/core/lib/Drupal/Core/Validation/ConstraintManager.php b/web/core/lib/Drupal/Core/Validation/ConstraintManager.php
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+++ b/web/core/lib/Drupal/Core/Validation/ConstraintManager.php
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+<?php
+
+namespace Drupal\Core\Validation;
+
+use Drupal\Component\Plugin\Discovery\StaticDiscoveryDecorator;
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+
+/**
+ * Constraint plugin manager.
+ *
+ * Manages validation constraints based upon
+ * \Symfony\Component\Validator\Constraint, whereas Symfony constraints are
+ * added in manually during construction. Constraint options are passed on as
+ * plugin configuration during plugin instantiation.
+ *
+ * While core does not prefix constraint plugins, modules have to prefix them
+ * with the module name in order to avoid any naming conflicts; for example, a
+ * "profile" module would have to prefix any constraints with "Profile".
+ *
+ * Constraint plugins may specify data types to which support is limited via the
+ * 'type' key of plugin definitions. See
+ * \Drupal\Core\Validation\Annotation\Constraint for details.
+ *
+ * @see \Drupal\Core\Validation\Annotation\Constraint
+ */
+class ConstraintManager extends DefaultPluginManager {
+
+  /**
+   * Overrides \Drupal\Component\Plugin\PluginManagerBase::__construct().
+   *
+   * @param \Traversable $namespaces
+   *   An object that implements \Traversable which contains the root paths
+   *   keyed by the corresponding namespace to look for plugin implementations.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+   *   Cache backend instance to use.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler to invoke the alter hook with.
+   */
+  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+    parent::__construct('Plugin/Validation/Constraint', $namespaces, $module_handler, NULL, 'Drupal\Core\Validation\Annotation\Constraint');
+    $this->alterInfo('validation_constraint');
+    $this->setCacheBackend($cache_backend, 'validation_constraint_plugins');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getDiscovery() {
+    if (!isset($this->discovery)) {
+      $this->discovery = parent::getDiscovery();
+      $this->discovery = new StaticDiscoveryDecorator($this->discovery, [$this, 'registerDefinitions']);
+    }
+    return $this->discovery;
+  }
+
+
+  /**
+   * Creates a validation constraint.
+   *
+   * @param string $name
+   *   The name or plugin id of the constraint.
+   * @param mixed $options
+   *   The options to pass to the constraint class. Required and supported
+   *   options depend on the constraint class.
+   *
+   * @return \Symfony\Component\Validator\Constraint
+   *   A validation constraint plugin.
+   */
+  public function create($name, $options) {
+    if (!is_array($options)) {
+      // Plugins need an array as configuration, so make sure we have one.
+      // The constraint classes support passing the options as part of the
+      // 'value' key also.
+      $options = isset($options) ? ['value' => $options] : [];
+    }
+    return $this->createInstance($name, $options);
+  }
+
+  /**
+   * Callback for registering definitions for constraints shipped with Symfony.
+   *
+   * @see ConstraintManager::__construct()
+   */
+  public function registerDefinitions() {
+    $this->getDiscovery()->setDefinition('Callback', [
+      'label' => new TranslatableMarkup('Callback'),
+      'class' => '\Symfony\Component\Validator\Constraints\Callback',
+      'type' => FALSE,
+    ]);
+    $this->getDiscovery()->setDefinition('Blank', [
+      'label' => new TranslatableMarkup('Blank'),
+      'class' => '\Symfony\Component\Validator\Constraints\Blank',
+      'type' => FALSE,
+    ]);
+    $this->getDiscovery()->setDefinition('NotBlank', [
+      'label' => new TranslatableMarkup('Not blank'),
+      'class' => '\Symfony\Component\Validator\Constraints\NotBlank',
+      'type' => FALSE,
+    ]);
+    $this->getDiscovery()->setDefinition('Email', [
+      'label' => new TranslatableMarkup('Email'),
+      'class' => '\Drupal\Core\Validation\Plugin\Validation\Constraint\EmailConstraint',
+      'type' => ['string'],
+    ]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processDefinition(&$definition, $plugin_id) {
+    // Make sure 'type' is set and either an array or FALSE.
+    if ($definition['type'] !== FALSE && !is_array($definition['type'])) {
+      $definition['type'] = [$definition['type']];
+    }
+  }
+
+  /**
+   * Returns a list of constraints that support the given type.
+   *
+   * @param string $type
+   *   The type to filter on.
+   *
+   * @return array
+   *   An array of constraint plugin definitions supporting the given type,
+   *   keyed by constraint name (plugin ID).
+   */
+  public function getDefinitionsByType($type) {
+    $definitions = [];
+    foreach ($this->getDefinitions() as $plugin_id => $definition) {
+      if ($definition['type'] === FALSE || in_array($type, $definition['type'])) {
+        $definitions[$plugin_id] = $definition;
+      }
+    }
+    return $definitions;
+  }
+
+}