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Objective C Bridge
There is the start of an Objective-C bridge available.
Some sources of information about the Objective-C run-time and other bridges to it:
- Understanding the Objective-C Runtime
- Objective-C Runtime Programming Guide
- Objective-C Runtime Reference
- Clozure CL's Objective-C Bridge
We should be able to parse BridgeSupport files and generate bindings for the Apple frameworks.
We need a way to bridge Objective C and Core Foundation types such as NSString, NSArray, NSDictionary with their Dylan equivalents, or at least to provide simple ways to access them.
We will need compiler support to do this correctly, but some invocations of objc_msgSend could, in fact, become invocations of the objc_msgSend_vtable* functions. The code generated should actually be using objc_msgSend_fixup in this situation to enable this optimization within the Objective C run-time.
For details, see [objc-explain]: objc_msgSend_vtable by Greg Parker.