The event topics length limit was a residual from an earlier design, where the limit was set to 4, matching with what's in Ethereum. Since then the length limit has been removed, but sdk has not been updated, so the user still can only submit events with topic length <=4.
Expanding impl_topics_for_tuple makes it more convenient to construct longer topics (up to 13).
Constructing topics from a Vec<T> does not subject to any length limit.
What
Resolves https://github.com/stellar/rs-soroban-sdk/issues/480 Plus a minor enhancement to
impl_topics_for_tuplefor tuple up to size 13.Why
The event topics length limit was a residual from an earlier design, where the limit was set to 4, matching with what's in Ethereum. Since then the length limit has been removed, but sdk has not been updated, so the user still can only submit events with topic length <=4. Expanding
impl_topics_for_tuplemakes it more convenient to construct longer topics (up to 13). Constructing topics from aVec<T>does not subject to any length limit.Known limitations
[TODO or N/A]