Hi,
for the preparation of complex parameter support, I added support for cyclic message definitions
E.g.:
Param.msg:
string name
Param[] other_params
During the review of the change (fix: Generate correct code for nested arrays of own type by jmachowinski · Pull Request #748 · ros2/rosidl · GitHub), the question came up if the missing support for this is just an oversight in the implementation, or if this is not supported by design.
I checked the design documents, and could not find an answer to this.
It would be great if someone with deeper knowledge could shine some light on this issue 