r\DatumConverter::nativeToDatumOrFunction PHP Method

    public function nativeToDatumOrFunction($f, $wrapImplicit = true)
    {
        if (!(is_object($f) && is_subclass_of($f, '\\r\\Query'))) {
            try {
                $f = $this->nativeToDatum($f);
                if (!is_subclass_of($f, '\\r\\Datum\\Datum')) {
                    // $f is not a simple datum. Wrap it into a function:
                    $f = new RFunction(array(new RVar('_')), $f);
                }
            } catch (RqlDriverError $e) {
                $f = $this->nativeToFunction($f);
            }
        }
        if ($wrapImplicit) {
            return $this->wrapImplicitVar($f);
        } else {
            return $f;
        }
    }