protected function ExtensionManager::alterDefinitions in Markdown 8.2

Invokes the hook to alter the definitions if the alter hook is set.

Parameters

$definitions: The discovered plugin definitions.

Overrides InstallablePluginManager::alterDefinitions

File

src/PluginManager/ExtensionManager.php, line 61

Class

ExtensionManager

Markdown Extension Plugin Manager.

Namespace

Drupal\markdown\PluginManager

Code

protected function alterDefinitions(&$definitions, $runtime = FALSE) {

  /** @var \Drupal\markdown\Annotation\MarkdownExtension[] $definitions */

  // Create dependency relationships between extensions.
  // Note: property is prefixed with an underscore to denote it as internal.
  // @see \Drupal\markdown\PluginManager\ExtensionCollection::__construct
  // @todo Figure out a better way to handle this.
  foreach ($definitions as $definition) {
    if (!isset($definition['_requiredBy'])) {
      $definition['_requiredBy'] = [];
    }
    $extensionRequirements = $definition
      ->getRequirementsByType('extension');
    foreach ($extensionRequirements as $requirement) {
      $id = $requirement
        ->getTypeId();

      // Check that the plugin exists.
      if (!isset($definitions[$id])) {
        throw new PluginNotFoundException($id);
      }

      // Extensions cannot require themselves.
      if ($id === $definition->id) {
        throw new InvalidPluginDefinitionException($definition->id, 'Extensions cannot require themselves.');
      }
      if (!isset($definitions[$id]['_requiredBy'])) {
        $definitions[$id]['_requiredBy'] = [];
      }
      if (!in_array($definition->id, $definitions[$id]['_requiredBy'])) {
        $definitions[$id]['_requiredBy'][] = $definition->id;
      }
    }
  }
  parent::alterDefinitions($definitions, $runtime);
}