feat: adds ContractLog.topics property for calculating the topics from a log

[antazoey]

What I did

I need this for implementing get_contract_logs() in ape-titanoboa

How I did it

How to verify it

Checklist

• All changes are completed
• Change is covered in tests
• Documentation is complete

[antazoey]

If we are worried about name clashing here, we could make this a method, e.g.:

def get_topics()`

or

@property
def encoded_topics

or whatever else

[fubuloubu]

Wonder if this could actually move a bit upstream into ethpm_types.EventABI, would be useful here: https://github.com/ApeWorX/silverback/blob/main/silverback/runner.py#L355 (used for creating streaming subscriptions)

[antazoey]

Wonder if this could actually move a bit upstream into ethpm_types.EventABI, would be useful here: https://github.com/ApeWorX/silverback/blob/main/silverback/runner.py#L355 (used for creating streaming subscriptions)

Done! ApeWorX/ethpm-types#148

[antazoey]

Wonder if this could actually move a bit upstream into ethpm_types.EventABI, would be useful here: https://github.com/ApeWorX/silverback/blob/main/silverback/runner.py#L355 (used for creating streaming subscriptions)

OK so now we have 1 basic implementation ethpm-types, as you saw, and one in Ape which is richer because it handles conversions as well.

[antazoey]

This will allow us to actually get ape-titanoboa to implement .get_contract_logs() and honor the given topics.

[antazoey]

Now ApeWorX/ape-titanoboa#17 is unblocked