Doctrine\ORM\Query\Parser::OrderByItem PHP Method

    public function OrderByItem()
    {
        $type = 'ASC';

        // We need to check if we are in a ResultVariable or StateFieldPathExpression
        $glimpse = $this->_lexer->glimpse();

        if ($glimpse['type'] != Lexer::T_DOT) {
            $token = $this->_lexer->lookahead;
            $expr = $this->ResultVariable();
        } else {
            $expr = $this->StateFieldPathExpression();
        }

        $item = new AST\OrderByItem($expr);

        if ($this->_lexer->isNextToken(Lexer::T_ASC)) {
            $this->match(Lexer::T_ASC);
        } else if ($this->_lexer->isNextToken(Lexer::T_DESC)) {
            $this->match(Lexer::T_DESC);
            $type = 'DESC';
        }

        $item->type = $type;
        return $item;
    }