| #![allow(dead_code, non_snake_case, non_camel_case_types, non_upper_case_globals)] |
| #![cfg(target_os = "macos")] |
| use objc::{self, msg_send, sel, sel_impl, class}; |
| #[allow(non_camel_case_types)] |
| pub type id = *mut objc::runtime::Object; |
| pub trait PFoo: Sized + std::ops::Deref {} |
| #[repr(transparent)] |
| #[derive(Debug, Copy, Clone)] |
| pub struct Foo(pub id); |
| impl std::ops::Deref for Foo { |
| type Target = objc::runtime::Object; |
| fn deref(&self) -> &Self::Target { |
| unsafe { &*self.0 } |
| } |
| } |
| unsafe impl objc::Message for Foo {} |
| impl Foo { |
| pub fn alloc() -> Self { |
| Self(unsafe { msg_send!(class!(Foo), alloc) }) |
| } |
| } |
| impl PFoo for Foo {} |
| impl IFoo for Foo {} |
| pub trait IFoo: Sized + std::ops::Deref {} |
| #[repr(transparent)] |
| #[derive(Debug, Copy, Clone)] |
| pub struct Bar(pub id); |
| impl std::ops::Deref for Bar { |
| type Target = objc::runtime::Object; |
| fn deref(&self) -> &Self::Target { |
| unsafe { &*self.0 } |
| } |
| } |
| unsafe impl objc::Message for Bar {} |
| impl Bar { |
| pub fn alloc() -> Self { |
| Self(unsafe { msg_send!(class!(Bar), alloc) }) |
| } |
| } |
| impl IFoo for Bar {} |
| impl PFoo for Bar {} |
| impl From<Bar> for Foo { |
| fn from(child: Bar) -> Foo { |
| Foo(child.0) |
| } |
| } |
| impl std::convert::TryFrom<Foo> for Bar { |
| type Error = &'static str; |
| fn try_from(parent: Foo) -> Result<Bar, Self::Error> { |
| let is_kind_of: bool = unsafe { msg_send!(parent, isKindOfClass : class!(Bar)) }; |
| if is_kind_of { |
| Ok(Bar(parent.0)) |
| } else { |
| Err("This Foo cannot be downcasted to Bar") |
| } |
| } |
| } |
| impl IBar for Bar {} |
| pub trait IBar: Sized + std::ops::Deref {} |
