③苇大 递归下降分析技术 The first technique for implementing a predictive parser is called recursive-descent A recursive descent parser consists of several small functions(procedures), one for each nonterminal in the grammar. as we parse a sentence we call the functions(procedures) that correspond to the left Side nonterminal of the productions we are applying If these productions are recursive, we end up calling the functions recursively递归下降分析技术 The first technique for implementing a predictive parser is called recursive-descent. A recursive descent parser consists of several small functions(procedures), one for each nonterminal in the grammar. As we parse a sentence, we call the functions (procedures) that correspond to the left side nonterminal of the productions we are applying. If these productions are recursive, we end up calling the functions recursively