编译器如何处理转义符与元字符? [英] how Escape Characters vs metacharacters are handled by the complier?

问题描述

大家好，

我是正则表达式的新手，有人可以告诉我
编译器如何处理转义字符和元字符，并且在内部有什么作用?




问候
Chaithanya M

Hi Everyone,

I am newbie to Regular Expressions,Can anyone please tell me
how Escape characters and metacharacters are handled by Compiler and what does it internally do?




regards
Chaithanya M

推荐答案

老实说，这取决于实现.在的代码Boost.Regex [ ^ ].该代码是免费提供的.

To be honest, this depends on the implementation. A good general introduction to the kind of algorithms used by regular expression parsers can be found in Mastering Regular Expressions[^] by Jeffrey Friedl. If you are serious about regular expressions then you should have this book.

As to how a regex engine handles things in practice, look at the code for Boost.Regex[^]. The code is freely available.

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