Add MetalKit; Add NSApplication NSMenu NSMenuItem; Improve Metal classes

vendor/darwin/Foundation/objc.odin

@@ -0,0 +1,73 @@
+package objc_Foundation
+
+foreign import "system:Foundation.framework"
+
+import "core:intrinsics"
+import "core:c"
+
+IMP :: proc "c" (object: id, sel: SEL, #c_vararg args: ..any) -> id
+
+foreign Foundation {
+	objc_lookUpClass       :: proc "c" (name: cstring) -> Class ---
+	sel_registerName       :: proc "c" (name: cstring) -> SEL ---
+	objc_allocateClassPair :: proc "c" (superclass: Class, name: cstring, extraBytes: uint) ---
+
+	class_addMethod :: proc "c" (cls: Class, name: SEL, imp: IMP, types: cstring) -> BOOL ---
+}
+
+
+@(objc_class="NSZone")
+Zone :: struct {using _: Object}
+
+@(link_prefix="NS")
+foreign Foundation {
+	AllocateObject   :: proc "c" (aClass: Class, extraBytes: UInteger, zone: ^Zone) -> id ---
+	DeallocateObject :: proc "c" (object: id) ---
+}
+
+Method :: ^objc_method
+objc_method :: struct {
+	method_name:  SEL,
+	method_types: cstring,
+	method_imp:   IMP,
+}
+objc_method_list :: struct {}
+
+objc_ivar :: struct {}
+objc_ivar_list :: struct {}
+
+objc_cache :: struct {
+	mask:     u32,
+	occupied: u32,
+	buckets:  [1]Method,
+}
+
+objc_protocol_list :: struct {
+	next:  ^objc_protocol_list,
+	count: c.int,
+	list:  [1]^Protocol,
+}
+
+@(objc_class="Protocol")
+Protocol :: struct{using _: intrinsics.objc_object}
+
+objc_object_internals :: struct {
+	isa: ^objc_class_internals,
+}
+
+
+objc_class_internals :: struct {
+	isa:           Class,
+	super_class:   Class,
+	name:          cstring,
+	version:       c.long,
+	info:          c.long,
+	instance_size: c.long,
+	ivars:         ^objc_ivar_list,
+	
+	methodLists:   ^^objc_method_list,
+
+	cache:         rawptr,
+	protocols:     rawptr,
+
+}