Replace long if-else with match-case

[zxzxwu]

No description provided.

[zxzxwu]

Hmmm, actually match-case is sometimes even slightly slower than if-else, but it does provide better readability.

Speed: dict (prebuilt) >> getattr(f'on_{key}') handler = if-else = match-case >= dict(inline)

[barbibulle]

This is nice. Readability is more important than raw performance, especially that the difference here isn't very large.