Generate ModuleEvent

[karthiknadig]

Generate moduleEvent on import, reload, and del.

[int19h]

So we are only going to report the stuff in sys.modules as modules?

[karthiknadig]

I thank that is a good first implementation. We can consider more rigorous module tracking later.

[int19h]

It's more a question of what is a module, in general. Our existing ptvsd implementation treats any .py file (more generally, co_filename of the code object) as a module - and only uses sys.modules as a means to populate the initial list, for the lack of better alternatives. If we're changing to tracking sys.modules exclusively, that would be a user-visible semantics change.

OTOH, with existing VS debugger as a baseline, we don't need to accurately track modules as they get loaded (because it doesn't). We just need to make sure that everything that we report that has an associated module ID - in particular, stack frames - has the corresponding module entry. This means that one possible implementation is to do no tracking at all, but instead report module as loaded when it's first seen in a stack trace, which is probably much easier.