[issue44283] Add jump table for certain safe match-case statements

[Brandt Bucher]

Brandt Bucher <brandtbucher at gmail.com> added the comment:

Hm. I’m not sure if the HAMT makes much sense. We don’t really care about efficient mutation or copies... constant-time lookups seem to be overwhelmingly the most valuable factor here.

I personally think that creating some sort of hashable dict and teaching marshal how to serialize/deserialize it could be a promising path forward. I imagine its actual design could mirror dict (sort of like set/frozenset).

That might be a rather drastic step though. Perhaps it’s better to first prove that building a mapping at runtime is too slow.

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<https://bugs.python.org/issue44283>
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