You can do things like this with exec():
class SafeDict(dict):
curated_keys = {"a", "b", "c"}
def __setitem__(self, k, v):
if k not i self.curated_keys:
raise Exception(f"{k!r} key not allowed")
super().__setitem__(k, v)
locals_dict = SafeDict()
globals_dict = SafeDict()
exec("d=1", locals_dict, globals_dict) # Exception: 'd' key not allowed
You can do all sorts of things using that technique, including the way
assignment to variables is handled.
Beyond that, I declare my competence in this matter to have been hereby
exceeded, since I really don't follow or understand the HDL paradigm you
are working in. Maybe others might be able to help.
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