| // run-pass |
| // Test where the impl self type uses a projection from a constant type. |
| |
| |
| trait Int |
| { |
| type T; |
| |
| fn dummy(&self) { } |
| } |
| |
| trait NonZero |
| { |
| fn non_zero(self) -> bool; |
| } |
| |
| impl Int for i32 { type T = i32; } |
| impl Int for i64 { type T = i64; } |
| impl Int for u32 { type T = u32; } |
| impl Int for u64 { type T = u64; } |
| |
| impl NonZero for <i32 as Int>::T { fn non_zero(self) -> bool { self != 0 } } |
| impl NonZero for <i64 as Int>::T { fn non_zero(self) -> bool { self != 0 } } |
| impl NonZero for <u32 as Int>::T { fn non_zero(self) -> bool { self != 0 } } |
| impl NonZero for <u64 as Int>::T { fn non_zero(self) -> bool { self != 0 } } |
| |
| fn main () |
| { |
| assert!(NonZero::non_zero(22_i32)); |
| assert!(NonZero::non_zero(22_i64)); |
| assert!(NonZero::non_zero(22_u32)); |
| assert!(NonZero::non_zero(22_u64)); |
| |
| assert!(!NonZero::non_zero(0_i32)); |
| assert!(!NonZero::non_zero(0_i64)); |
| assert!(!NonZero::non_zero(0_u32)); |
| assert!(!NonZero::non_zero(0_u64)); |
| } |