75 lines
1.8 KiB
Rust
75 lines
1.8 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
|
|
use std::cmp;
|
|
use std::ops;
|
|
|
|
#[deriving(Show)]
|
|
struct Point {
|
|
x: int,
|
|
y: int
|
|
}
|
|
|
|
impl ops::Add<Point,Point> for Point {
|
|
fn add(&self, other: &Point) -> Point {
|
|
Point {x: self.x + (*other).x, y: self.y + (*other).y}
|
|
}
|
|
}
|
|
|
|
impl ops::Sub<Point,Point> for Point {
|
|
fn sub(&self, other: &Point) -> Point {
|
|
Point {x: self.x - (*other).x, y: self.y - (*other).y}
|
|
}
|
|
}
|
|
|
|
impl ops::Neg<Point> for Point {
|
|
fn neg(&self) -> Point {
|
|
Point {x: -self.x, y: -self.y}
|
|
}
|
|
}
|
|
|
|
impl ops::Not<Point> for Point {
|
|
fn not(&self) -> Point {
|
|
Point {x: !self.x, y: !self.y }
|
|
}
|
|
}
|
|
|
|
impl ops::Index<bool,int> for Point {
|
|
fn index(&self, x: &bool) -> int {
|
|
if *x { self.x } else { self.y }
|
|
}
|
|
}
|
|
|
|
impl cmp::Eq for Point {
|
|
fn eq(&self, other: &Point) -> bool {
|
|
(*self).x == (*other).x && (*self).y == (*other).y
|
|
}
|
|
fn ne(&self, other: &Point) -> bool { !(*self).eq(other) }
|
|
}
|
|
|
|
pub fn main() {
|
|
let mut p = Point {x: 10, y: 20};
|
|
p = p + Point {x: 101, y: 102};
|
|
p = p - Point {x: 100, y: 100};
|
|
assert_eq!(p + Point {x: 5, y: 5}, Point {x: 16, y: 27});
|
|
assert_eq!(-p, Point {x: -11, y: -22});
|
|
assert_eq!(p[true], 11);
|
|
assert_eq!(p[false], 22);
|
|
|
|
let q = !p;
|
|
assert_eq!(q.x, !(p.x));
|
|
assert_eq!(q.y, !(p.y));
|
|
|
|
// Issue #1733
|
|
let result: proc(int) = proc(_)();
|
|
result(p[true]);
|
|
}
|