词法分析器中的ANTLR3动态引号 [英] ANTLR3 Dynamic quotes in lexer

问题描述

我需要匹配 Perl 正则表达式匹配器之类的东西

I need to match something like the Perl regexp matcher

m/my regex!*/

其中引号可以是范围内的任何字符.所以上面是一样的

where the quotes can be any character from a range. So the above is the same as

m%my regex!*%

对词法分析器规则的天真猜测是

A naive guess of a lexer rule would be

REGEX: 'm' quote=. (~(quote))* quote;

但这不起作用，因为后面的 quote 不是指 quote= 而是指一些规则.

but that does not work, because the latter quote is not referring to the quote= but to some rule.

我可以用很多自己的代码来做，比如

I can do it with a lot of own code, like

REGEX: 'm' quote=. { ... implement the loop and final match myself ... } ;

但不知何故，我认为应该有一种规范的方式来做这样的事情.

but somehow I think there should be a canonical way to do such things.

推荐答案

...但不知何故，我认为应该有一种规范的方式来做这样的事情.

... but somehow I think there should be a canonical way to do such things.

没有.您必须使用自定义代码来执行此操作.

There is not. You'll have to do this with custom code.

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