private function _math($type, $args = array())
{
$type = strtoupper($type);
$getLast = Arrays::getLast($args);
$asparam = ' ';
if ($getLast === true) {
$args = Arrays::removeLast($args);
$return = true;
$as = Arrays::getLast($args);
if (stripos(trim($as), 'as') === 0) {
$asparam .= $as;
$args = Arrays::removeLast($args);
}
} else {
$return = false;
}
if (stripos(trim($getLast), 'as') === 0) {
$asparam .= $getLast;
$args = Arrays::removeLast($args);
}
$args = $type . '(' . rtrim(implode(',', $args), ',') . ')' . $asparam;
return (object) array('args' => $args, 'return' => $return);
}