gistfile1.rs
| struct Point { | |
| x: int, | |
| y: int | |
| } | |
| trait Positioned { | |
| fn x(&self)-> int; | |
| fn y(&self)-> int; | |
| fn setX(&mut self, int); | |
| fn setY(&mut self, int); | |
| } | |
| trait Movable: Positioned { | |
| fn translate(&mut self, dx: int, dy: int); | |
| } | |
| struct Entity { | |
| pos: Point, | |
| } | |
| impl Positioned for Entity { | |
| fn x(&self)-> int { | |
| self.pos.x | |
| } | |
| fn y(&self)-> int { | |
| self.pos.y | |
| } | |
| fn setX(&mut self, v: int) { | |
| self.pos.x = v; | |
| } | |
| fn setY(&mut self, v: int) { | |
| self.pos.y = v; | |
| } | |
| } | |
| impl Movable for Entity { | |
| fn translate(&mut self, dx: int, dy: int) { | |
| let x = self.x(); | |
| let y = self.y(); | |
| self.setX(x + dx); | |
| self.setY(y + dy); | |
| } | |
| } | |
| fn main() { | |
| let mut e = Entity { | |
| pos: Point { x: 0, y: 0 }, | |
| }; | |
| println(fmt!("%?, %?", e.x(), e.y())); | |
| e.translate(5, 10); | |
| println(fmt!("%?, %?", e.x(), e.y())); | |
| } |