Feature Request: Support for analysis of local variables

[MahatmaFatalError]

During https://stackoverflow.com/questions/70507647/how-to-assert-hashmap-keys-to-be-comparable-with-archunit/70509141 we needed a way to analyze local variables.

Hence, I propose to extend JavaCodeUnit https://www.archunit.org/userguide/html/000_Index.html#_domain to also support local variable definition, declaration and initialization.

[codecholeric]

Technically this should be doable 🙂 But notice that there once already was #227 which pretty much suggested the same I think? However, I didn't get around to it back then and nobody else was willing to tackle it either, so I eventually closed it 😞
I would be still open to it (would be necessary to analyse performance impact though and possibly make it an opt-in feature if the drain is too big, since the use case is quite specific). But, as back then I personally don't know when I can really tackle this. So any support would be highly appreciated!

[dbraun1991]

For more persons to find their way to this thread ...
https://stackoverflow.com/questions/74461422/archunit-test-sensitive-variable-naming
... ;-)

[ttho]

Hello, is there still nobody working on this issue? I am willing to do so.

[ttho]

Ok, at least someone likes this ;)
I actually started on it, in case someone wants to join.

[ttho]

A simple solution for including local variables in the dependency checks is here: #1327
Please comment. Thanks!