Parser and ffi generator for MS Windows .winmd format metadata files (currently only tested with the Win32 files, but intended to eventually support WinRT and Windows App SDK as well.

current status: proof-of-concept, not ready for use

Code is a big mess and needs lots of cleanup, but seems to parse current Windows.Win32.winmd more or less correctly. Can generate something resembling cffi and com-on ffi definitions, but not in a directly usable form, and no actual user API yet. Probably missing a few things, and might be getting some details wrong, but at least looks close.