78 lines
2.0 KiB
Rust
78 lines
2.0 KiB
Rust
#[macro_use]
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extern crate objc;
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extern crate objc_foundation;
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use std::sync::{Once, ONCE_INIT};
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use objc::Message;
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use objc::declare::ClassDecl;
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use objc::runtime::{Class, Object, Sel};
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use objc_foundation::{INSObject, NSObject};
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pub enum MYObject { }
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impl MYObject {
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fn number(&self) -> u32 {
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unsafe {
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let obj = &*(self as *const _ as *const Object);
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*obj.get_ivar("_number")
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}
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}
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fn set_number(&mut self, number: u32) {
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unsafe {
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let obj = &mut *(self as *mut _ as *mut Object);
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obj.set_ivar("_number", number);
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}
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}
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}
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unsafe impl Message for MYObject { }
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static MYOBJECT_REGISTER_CLASS: Once = ONCE_INIT;
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impl INSObject for MYObject {
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fn class() -> &'static Class {
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MYOBJECT_REGISTER_CLASS.call_once(|| {
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let superclass = NSObject::class();
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let mut decl = ClassDecl::new("MYObject", superclass).unwrap();
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decl.add_ivar::<u32>("_number");
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// Add ObjC methods for getting and setting the number
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extern fn my_object_set_number(this: &mut Object, _cmd: Sel, number: u32) {
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unsafe { this.set_ivar("_number", number); }
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}
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extern fn my_object_get_number(this: &Object, _cmd: Sel) -> u32 {
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unsafe { *this.get_ivar("_number") }
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}
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unsafe {
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let set_number: extern fn(&mut Object, Sel, u32) = my_object_set_number;
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decl.add_method(sel!(setNumber:), set_number);
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let get_number: extern fn(&Object, Sel) -> u32 = my_object_get_number;
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decl.add_method(sel!(number), get_number);
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}
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decl.register();
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});
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Class::get("MYObject").unwrap()
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}
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}
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fn main() {
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let mut obj = MYObject::new();
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obj.set_number(7);
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println!("Number: {}", unsafe {
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let number: u32 = msg_send![obj, number];
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number
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});
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unsafe {
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let _: () = msg_send![obj, setNumber:12u32];
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}
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println!("Number: {}", obj.number());
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}
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