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Is there a way of getting around circular unit references in Delphi?
Maybe a newer version of delphi or some magic hack or something?
My delphi project has 100 000+ lines of code mostly based on singleton classes. I need to refactor this, but that would mean several months of “circular reference” hell 🙂
I’ve been maintaining close to a million lines of legacy code for the past 10 years so I understand your pain!
In the code that I maintain, when I’ve encountered circular uses, I frequently have found that they are caused by constants or type definitions in unit A that are needed by unit B. (Sometimes it’s also a small bit of code (or even, global variables) in Unit A that is also needed by unit B.
In this situation (when I’m lucky!) I can carefully extract those parts of the code into a new unit C that contains the constants, type definitions, and shared code. Then units A and B use unit C.
I post the above with some hesitance because I’m not an expert on software design and realize there are many others here who are far more knowledgeable than I am. Hopefully, though, my experience will be of some use to you.