82 lines
1.5 KiB
Rust
82 lines
1.5 KiB
Rust
// run-pass
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#![allow(unused_variables)]
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use std::cmp;
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use std::ops;
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#[derive(Copy, Clone, Debug)]
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struct Point {
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x: isize,
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y: isize
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}
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impl ops::Add for Point {
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type Output = Point;
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fn add(self, other: Point) -> Point {
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Point {x: self.x + other.x, y: self.y + other.y}
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}
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}
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impl ops::Sub for Point {
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type Output = Point;
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fn sub(self, other: Point) -> Point {
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Point {x: self.x - other.x, y: self.y - other.y}
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}
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}
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impl ops::Neg for Point {
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type Output = Point;
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fn neg(self) -> Point {
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Point {x: -self.x, y: -self.y}
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}
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}
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impl ops::Not for Point {
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type Output = Point;
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fn not(self) -> Point {
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Point {x: !self.x, y: !self.y }
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}
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}
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impl ops::Index<bool> for Point {
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type Output = isize;
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fn index(&self, x: bool) -> &isize {
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if x {
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&self.x
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} else {
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&self.y
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}
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}
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}
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impl cmp::PartialEq for Point {
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fn eq(&self, other: &Point) -> bool {
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(*self).x == (*other).x && (*self).y == (*other).y
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}
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fn ne(&self, other: &Point) -> bool { !(*self).eq(other) }
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}
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pub fn main() {
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let mut p = Point {x: 10, y: 20};
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p = p + Point {x: 101, y: 102};
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p = p - Point {x: 100, y: 100};
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assert_eq!(p + Point {x: 5, y: 5}, Point {x: 16, y: 27});
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assert_eq!(-p, Point {x: -11, y: -22});
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assert_eq!(p[true], 11);
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assert_eq!(p[false], 22);
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let q = !p;
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assert_eq!(q.x, !(p.x));
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assert_eq!(q.y, !(p.y));
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// Issue #1733
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result(p[true]);
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}
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fn result(i: isize) { }
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