protected function _useNode()
    {
        $current = $this->_states['current'];
        $token = $this->_stream->current(true);
        $last = $alias = $use = '';
        $as = false;
        $stop = ';';
        $prefix = '';
        while ($token[1] !== $stop) {
            $this->_states['body'] .= $token[1];
            if (!$token = $this->_stream->next(true)) {
                break;
            }
            switch ($token[0]) {
                case ',':
                    $as ? $this->_states['uses'][$alias] = $prefix . $use : $this->_states['uses'][$last] = $prefix . $use;
                    $last = $alias = $use = '';
                    $as = false;
                break;
                case T_STRING:
                    $last = $token[1];
                case T_NS_SEPARATOR:
                    $as ? $alias .= $token[1] : $use .= $token[1];
                break;
                case T_AS:
                    $as = true;
                break;
                case '{':
                    $prefix = $use;
                    $use = '';
                    $stop = $current->type === 'class' ? '}' : ';';
                break;
            }
        }
        $this->_states['body'] .= $token[0];
        $as ? $this->_states['uses'][$alias] = $prefix . $use : $this->_states['uses'][$last] = $prefix . $use;
        $this->_codeNode('use');
    }