This is exciting to see. I don't know what your exact ambitions are, but if the goal is to eventually do Windows application development, there are a number of runtime customizations that could be done to make Swift a good platform citizen and interoperate with the platform. For instance, one could make class metadata and/or protocol witness tables COM compatible by sticking an IUnknown implementation at the address point, so that Swift objects and existentials can be passed as COM objects. It should be possible to provide some amount of IInspectable support based on Swift's metadata too.
7 Likes