Support modules

[liamappelbe]

I'm trying to load a swift dylib containing an ObjC compatible class, FooClass. The swift compiler has a concept of "modules", and the class name is prefixed with the module name, blah. So when the Dart wrapper tries to load FooClass it fails, because the full name is blah.FooClass. When I manually modify the Dart wrapper to load blah.FooClass, it works fine.

• First I need to figure out how to do this in pure ObjC. Is there a module annotation or something?
• Second, is there a libclang function that can get the module name for a class? If so, this is an easy bug to fix.
• Otherwise we'll need to add a way of specifying the module name in the config per class (because NSObject etc don't have a module name).

[liamappelbe]

I think this is just a swift feature, and not part of ObjC. It seems to be caused by this annotation in the ObjC wrapper that was generated for my swift file:

SWIFT_CLASS("_TtC3foo8FooClass")

In the libclang AST, this shows up as an UnexposedAttr, which means there's no way of querying any information about it. So I think we're going to have to make this an option in the config.

[dcharkes]

So I think we're going to have to make this an option in the config.

sgtm