These parsers give an imperative flavor to parsing, and, since imperative constructs are not native to declarative EBNF, mimicking the host language, C++, should make their use immediately familiar.

• 这些分析器带来了指令式分析，并且，由于指令式结构并非声明式的EBNF的特征，模仿宿主语言，C++，将使这些分析器的使用方法能够被迅速熟悉。