| //@ run-pass |
| |
| #![feature(fn_delegation)] |
| |
| trait Trait: Sized { |
| fn by_value(self) -> i32 { 1 } |
| fn by_mut_ref(&mut self) -> i32 { 2 } |
| fn by_ref(&self) -> i32 { 3 } |
| |
| fn static_self() -> F { F } |
| |
| fn static_value(_: F) -> i32 { 1 } |
| fn static_mut_ref(_: &mut F) -> i32 { 2 } |
| fn static_ref(_: &F) -> i32 { 3 } |
| } |
| |
| #[derive(Default, Eq, PartialEq, Debug)] |
| struct F; |
| impl Trait for F {} |
| |
| struct S(F); |
| |
| impl Trait for S { |
| // Delegation's expression is removed from static functions. |
| reuse <F as Trait>::* { self.0 } |
| } |
| |
| fn main() { |
| let mut s = S(F); |
| assert_eq!(s.by_mut_ref(), 2); |
| assert_eq!(s.by_ref(), 3); |
| assert_eq!(s.by_value(), 1); |
| |
| assert_eq!(S::static_self(), F); |
| |
| assert_eq!(S::static_value(F), 1); |
| assert_eq!(S::static_mut_ref(&mut F), 2); |
| assert_eq!(S::static_ref(&F), 3); |
| } |
