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<?php

namespace Drupal\user\Access;

use Drupal\Core\Access\AccessResult;
use Drupal\Core\Routing\Access\AccessInterface;
use Drupal\Core\Session\AccountInterface;
use Symfony\Component\Routing\Route;

/**
 * Determines access to routes based on permissions defined via
 * $module.permissions.yml files.
 */
class PermissionAccessCheck implements AccessInterface {

  /**
   * Checks access.
   *
   * @param \Symfony\Component\Routing\Route $route
   *   The route to check against.
   * @param \Drupal\Core\Session\AccountInterface $account
   *   The currently logged in account.
   *
   * @return \Drupal\Core\Access\AccessResultInterface
   *   The access result.
   */
  public function access(Route $route, AccountInterface $account) {
    $permission = $route->getRequirement('_permission');

    if ($permission === NULL) {
      return AccessResult::neutral();
    }

    // Allow to conjunct the permissions with OR ('+') or AND (',').
    $split = explode(',', $permission);
    if (count($split) > 1) {
      return AccessResult::allowedIfHasPermissions($account, $split, 'AND');
    }
    else {
      $split = explode('+', $permission);
      return AccessResult::allowedIfHasPermissions($account, $split, 'OR');
    }
  }

}