I'm making an algebraic filter that looks a lot like grep. Doing it in c++. the python one lets you go through a log file and filter the lines out based on st

I'm making an algebraic filter that looks a lot like grep. Doing it in c++. the python one lets you go through a log file and filter the lines out based on statements like... You can currently use it to say "give me all lines that contain "substrA" and "substrB" but not "substrC" or "substrD"." This current python implementation can only do AND for requirements, and OR for negative requirements. But, I realized that I wanted to do a filter that could handle things like "give me all the lines that contain ... ("substrA" or "substrB") AND ("substrC" or "substrD")" and that was when I realized that it needs to be an algebraic system.