| //@ run-pass | |
| #![allow(dead_code)] | |
| #![allow(non_snake_case)] | |
| trait Positioned { | |
| fn SetX(&mut self, _: isize); | |
| fn X(&self) -> isize; | |
| } | |
| trait Movable: Positioned { | |
| fn translate(&mut self, dx: isize) { | |
| let x = self.X(); | |
| self.SetX(x + dx); | |
| } | |
| } | |
| struct Point { x: isize, y: isize } | |
| impl Positioned for Point { | |
| fn SetX(&mut self, x: isize) { | |
| self.x = x; | |
| } | |
| fn X(&self) -> isize { | |
| self.x | |
| } | |
| } | |
| impl Movable for Point {} | |
| pub fn main() { | |
| let mut p = Point{ x: 1, y: 2}; | |
| p.translate(3); | |
| assert_eq!(p.X(), 4); | |
| } |