Function custom_class

src/test_utils.rs:65–122

()

}

pub fn custom_class() -> &'static Class {
    static REGISTER_CUSTOM_CLASS: Once = ONCE_INIT;

    REGISTER_CUSTOM_CLASS.call_once(|| {
        // The runtime will call this method, so it has to be implemented
        extern fn custom_obj_class_initialize(_this: &Class, _cmd: Sel) { }

        let mut decl = ClassDecl::root("CustomObject", custom_obj_class_initialize).unwrap();
        let proto = custom_protocol();

        decl.add_protocol(proto);
        decl.add_ivar::<u32>("_foo");

        extern fn custom_obj_set_foo(this: &mut Object, _cmd: Sel, foo: u32) {
            unsafe { this.set_ivar::<u32>("_foo", foo); }
        }

        extern fn custom_obj_get_foo(this: &Object, _cmd: Sel) -> u32 {
            unsafe { *this.get_ivar::<u32>("_foo") }
        }

        extern fn custom_obj_get_struct(_this: &Object, _cmd: Sel) -> CustomStruct {
            CustomStruct { a: 1, b: 2, c: 3, d: 4 }
        }

        extern fn custom_obj_class_method(_this: &Class, _cmd: Sel) -> u32 {
            7
        }

        extern fn custom_obj_set_bar(this: &mut Object, _cmd: Sel, bar: u32) {
            unsafe { this.set_ivar::<u32>("_foo", bar) ;}
        }

        extern fn custom_obj_add_number_to_number(_this: &Class, _cmd: Sel, fst: i32, snd: i32) -> i32 {
            fst + snd
        }

        unsafe {
            let set_foo: extern fn(&mut Object, Sel, u32) = custom_obj_set_foo;
            decl.add_method(sel!(setFoo:), set_foo);
            let get_foo: extern fn(&Object, Sel) -> u32 = custom_obj_get_foo;
            decl.add_method(sel!(foo), get_foo);
            let get_struct: extern fn(&Object, Sel) -> CustomStruct = custom_obj_get_struct;
            decl.add_method(sel!(customStruct), get_struct);
            let class_method: extern fn(&Class, Sel) -> u32 = custom_obj_class_method;
            decl.add_class_method(sel!(classFoo), class_method);

            let protocol_instance_method: extern fn(&mut Object, Sel, u32) = custom_obj_set_bar;
            decl.add_method(sel!(setBar:), protocol_instance_method);
            let protocol_class_method: extern fn(&Class, Sel, i32, i32) -> i32 = custom_obj_add_number_to_number;
            decl.add_class_method(sel!(addNumber:toNumber:), protocol_class_method);
        }

        decl.register();
    });

    class!(CustomObject)
}