pierrelf.com
Implement platform/src/objc.rs: extern "C" bindings to the Objective-C runtime.
Required bindings:
- objc_msgSend (with proper variadic/ABI handling for AArch64)
- objc_getClass
- sel_registerName
- class_addMethod
- objc_allocateClassPair / objc_registerClassPair
Rust abstractions:
- msg_send! macro for type-safe(ish) message dispatch
- Class wrapper type
- Sel wrapper type
- Id wrapper type (non-null pointer to Obj-C object)
Link: libobjc.dylib
Unit test: objc_getClass("NSObject") returns non-null.
This is the foundation all other platform FFI builds on.