I actually have fully functioning reflection in GWT in a branch of my own, and will be getting it merged to master shortly after the GWT.create conference.
If you want to support complete reflection across the board it greatly swells compile size, but I have made it so you can be selective about what supports reflection, in order to avoid code bloat.
https://github.com/WeTheInternet/xapi/tree/master/gwt/gwt-re...
If you want to support complete reflection across the board it greatly swells compile size, but I have made it so you can be selective about what supports reflection, in order to avoid code bloat.