protected function ModuleHandler::getImplementationInfo

Provides information about modules' implementations of a hook.

Parameters

string $hook: The name of the hook (e.g. "help" or "menu").

Return value

array An array whose keys are the names of the modules which are implementing this hook and whose values are either an array of information from hook_hook_info() or FALSE if the implementation is in the module file.

File

drupal/core/lib/Drupal/Core/Extension/ModuleHandler.php, line 449

Contains Drupal\Core\Extension\ModuleHandler.

Class

ModuleHandler

Class that manages enabled modules in a Drupal installation.

Namespace

Code

protected function getImplementationInfo($hook) {
  if (isset($this->implementations[$hook])) {
    return $this->implementations[$hook];
  }
  $this->implementations[$hook] = array();
  $hook_info = $this
    ->getHookInfo();
  foreach ($this->moduleList as $module => $filename) {
    $include_file = isset($hook_info[$hook]['group']) && $this
      ->loadInclude($module, 'inc', $module . '.' . $hook_info[$hook]['group']);

    // Since $this->hookImplements() may needlessly try to load the include
    // file again, function_exists() is used directly here.
    if (function_exists($module . '_' . $hook)) {
      $this->implementations[$hook][$module] = $include_file ? $hook_info[$hook]['group'] : FALSE;
    }
  }

  // Allow modules to change the weight of specific implementations but avoid
  // an infinite loop.
  if ($hook != 'module_implements_alter') {
    $this
      ->alter('module_implements', $this->implementations[$hook], $hook);
  }
  return $this->implementations[$hook];
}