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1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
4 //
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10
11 // run-pass
12 #![allow(unused_mut)]
13 #![allow(non_camel_case_types)]
14
15
16
17 enum color {
18 rgb(isize, isize, isize),
19 rgba(isize, isize, isize, isize),
20 hsl(isize, isize, isize),
21 }
22
23 fn process(c: color) -> isize {
24 let mut x: isize;
25 match c {
26 color::rgb(r, _, _) => { x = r; }
27 color::rgba(_, _, _, a) => { x = a; }
28 color::hsl(_, s, _) => { x = s; }
29 }
30 return x;
31 }
32
33 pub fn main() {
34 let gray: color = color::rgb(127, 127, 127);
35 let clear: color = color::rgba(50, 150, 250, 0);
36 let red: color = color::hsl(0, 255, 255);
37 assert_eq!(process(gray), 127);
38 assert_eq!(process(clear), 0);
39 assert_eq!(process(red), 255);
40 }