Invoker.php

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<?php

namespace Elgg;

use Closure;
use Elgg\Di\PublicContainer;
use ElggSession;

class Invoker {

    protected $session;

    protected $dic;

    public function __construct(ElggSession $session, PublicContainer $dic) {
        $this->session = $session;
        $this->dic = $dic;
    }

    public function call(int $flags, Closure $closure) {

        $ia = $this->session->getIgnoreAccess();
        if ($flags & ELGG_IGNORE_ACCESS) {
            $this->session->setIgnoreAccess(true);
        } else if ($flags & ELGG_ENFORCE_ACCESS) {
            $this->session->setIgnoreAccess(false);
        }

        $ha = $this->session->getDisabledEntityVisibility();
        if ($flags & ELGG_SHOW_DISABLED_ENTITIES) {
            $this->session->setDisabledEntityVisibility(true);
        } else if ($flags & ELGG_HIDE_DISABLED_ENTITIES) {
            $this->session->setDisabledEntityVisibility(false);
        }

        $restore = function () use ($ia, $ha) {
            $this->session->setIgnoreAccess($ia);
            $this->session->setDisabledEntityVisibility($ha);
        };

        try {
            $result = $this->dic->call($closure);
        } catch (\Exception $e) {
            $restore();
            throw $e;
        }

        $restore();

        return $result;
    }
}