mapbox
clusterProperties does not fully support Style Specification.
Environment
- Xcode version: 13.4.1
- iOS version: 15.6.1
- Devices affected: All devices are affected.
- Maps SDK Version: v10.8.0
Observed behavior and steps to reproduce
it is not possible to express [["+", ["accumulated"], ["get", "sum"]], ["get", "scalerank"]] via Expression, therefore it is not possible to use [["+", ["accumulated"], ["get", "sum"]], ["get", "scalerank"]] to express a cluster property.
Expected behavior
I expect to be able to use [["+", ["accumulated"], ["get", "sum"]], ["get", "scalerank"]] as a value in the dictionary clusterProperties.
Notes / preliminary analysis
In order to express [["+", ["accumulated"], ["get", "sum"]], ["get", "scalerank"]] and other such expressions, the type for the value of the clusterProperties dictionary must support an array of two expressions.
I believe this can be accomplished by adding another Operator called expression with associated value of type Expression. This will require removing String raw type from the enum. Custom encoder/decoder function/init will need to be added as well.
Another possible solution is to change the type of clusterProperties to [String: [Expression.Element]]. This simple solution is less type safe but much easier to implement. It would be nice to make Expression.elements public if this route is taken.
