Subclass EventFilterBase based on the amount of topics an event defines

[ArtificialPB]

Module

ABI

📝 Description

We have only two subclasses: AnonymousEventFilter and EventFilter, both of which expose filtering methods for all 4 (max) number of topics that an event can define. For each EventFactory implementation, use the subclass which exposes the same number of topics as the event has defined.

Create a specific subclass for each number of topics an event can define:

• EventFilter: from 1 to 3 topics, topicId occupies the topic0 slot so only 3 are available
• AnonymousEventFilter: from 0 to 4 topics (no topicId).