| // run-pass |
| #![feature(arbitrary_self_types)] |
| #![feature(rustc_attrs)] |
| |
| use std::{ |
| rc::Rc, |
| sync::Arc, |
| pin::Pin, |
| }; |
| |
| trait Trait { |
| fn by_rc(self: Rc<Self>) -> i64; |
| fn by_arc(self: Arc<Self>) -> i64; |
| fn by_pin_mut(self: Pin<&mut Self>) -> i64; |
| fn by_pin_box(self: Pin<Box<Self>>) -> i64; |
| fn by_pin_pin_pin_ref(self: Pin<Pin<Pin<&Self>>>) -> i64; |
| } |
| |
| impl Trait for i64 { |
| fn by_rc(self: Rc<Self>) -> i64 { |
| *self |
| } |
| fn by_arc(self: Arc<Self>) -> i64 { |
| *self |
| } |
| fn by_pin_mut(self: Pin<&mut Self>) -> i64 { |
| *self |
| } |
| fn by_pin_box(self: Pin<Box<Self>>) -> i64 { |
| *self |
| } |
| fn by_pin_pin_pin_ref(self: Pin<Pin<Pin<&Self>>>) -> i64 { |
| *self |
| } |
| } |
| |
| fn main() { |
| let rc = Rc::new(1i64) as Rc<dyn Trait>; |
| assert_eq!(1, rc.by_rc()); |
| |
| let arc = Arc::new(2i64) as Arc<dyn Trait>; |
| assert_eq!(2, arc.by_arc()); |
| |
| let mut value = 3i64; |
| let pin_mut = Pin::new(&mut value) as Pin<&mut dyn Trait>; |
| assert_eq!(3, pin_mut.by_pin_mut()); |
| |
| let pin_box = Into::<Pin<Box<i64>>>::into(Box::new(4i64)) as Pin<Box<dyn Trait>>; |
| assert_eq!(4, pin_box.by_pin_box()); |
| |
| let value = 5i64; |
| let pin_pin_pin_ref = Pin::new(Pin::new(Pin::new(&value))) as Pin<Pin<Pin<&dyn Trait>>>; |
| assert_eq!(5, pin_pin_pin_ref.by_pin_pin_pin_ref()); |
| } |