多个flex/bison解析器 [英] Multiple flex/bison parsers

问题描述

处理一个项目中的多个Flex/Bison解析器的最佳方法是什么?

What is the best way to handle multiple Flex/Bison parsers inside a project?

我写了一个解析器，现在在同一个项目中需要第二个解析器.到目前为止，在parser1.y的第三部分中，我插入了main(..)方法并从此处调用yyparse.

I wrote a parser and now I need a second one in the same project. So far in the third section of parser1.y I inserted the main(..) method and called yyparse from there.

我想要获得的是拥有两个不同的解析器(parser1.y和parser2.y)，并且能够通过外部函数使用它们(假设main.cpp中的main).

What I want to obtain is having two different parsers (parser1.y and parser2.y) and be able to use them from an external function (let's assume main in main.cpp).

我应该采取哪些预防措施将yyparse函数导出到.y文件之外，以及如何处理两个解析器?

Which precautions should I use to export yyparse functions outside .y files and how should I handle two parsers?

PS.我正在使用g ++进行编译，但未使用Flex和Bison的C ++版本进行编译，因此我想保持这种方式(因此避免将解析器封装在对象中).

PS. I'm using g++ to compile but not the C++ versions of Flex and Bison and I would like to keep it this way (so avoiding encapsulating the parser inside an object).

推荐答案

请注意，Bison提供了'-p zz'选项，以'zz'而不是'yy'作为符号的前缀.

Note that Bison provides the '-p zz' option to prefix symbols with 'zz' instead of 'yy'.

类似地，Flex提供了'-P zz'选项，为符号加上'zz'而不是'yy'前缀.它使用"-p"进行性能报告. 可惜他们彼此之间并不一致.

Similarly, Flex provides the '-P zz' option to prefix symbols with 'zz' instead of 'yy'. It uses '-p' for performance reporting. 'Tis a pity they are not consistent with each other.

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