src/test/run-pass/tag-variant-disr-val.rs

   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 use color::{red, green, blue, black, white, imaginary, purple, orange};
  12
  13 #[derive(Copy, Clone)]
  14 enum color {
  15     red = 0xff0000,
  16     green = 0x00ff00,
  17     blue = 0x0000ff,
  18     black = 0x000000,
  19     white = 0xFFFFFF,
  20     imaginary = -1,
  21     purple = 1 << 1,
  22     orange = 8 >> 1
  23 }
  24
  25 impl PartialEq for color {
  26     fn eq(&self, other: &color) -> bool {
  27         ((*self) as usize) == ((*other) as usize)
  28     }
  29     fn ne(&self, other: &color) -> bool { !(*self).eq(other) }
  30 }
  31
  32 pub fn main() {
  33     test_color(red, 0xff0000, "red".to_string());
  34     test_color(green, 0x00ff00, "green".to_string());
  35     test_color(blue, 0x0000ff, "blue".to_string());
  36     test_color(black, 0x000000, "black".to_string());
  37     test_color(white, 0xFFFFFF, "white".to_string());
  38     test_color(imaginary, -1, "imaginary".to_string());
  39     test_color(purple, 2, "purple".to_string());
  40     test_color(orange, 4, "orange".to_string());
  41 }
  42
  43 fn test_color(color: color, val: isize, name: String) {
  44     //assert!(unsafe::transmute(color) == val);
  45     assert_eq!(color as isize, val);
  46     assert!(get_color_alt(color) == name);
  47     assert!(get_color_if(color) == name);
  48 }
  49
  50 fn get_color_alt(color: color) -> String {
  51     match color {
  52       red => {"red".to_string()}
  53       green => {"green".to_string()}
  54       blue => {"blue".to_string()}
  55       black => {"black".to_string()}
  56       white => {"white".to_string()}
  57       imaginary => {"imaginary".to_string()}
  58       purple => {"purple".to_string()}
  59       orange => {"orange".to_string()}
  60     }
  61 }
  62
  63 fn get_color_if(color: color) -> String {
  64     if color == red {"red".to_string()}
  65     else if color == green {"green".to_string()}
  66     else if color == blue {"blue".to_string()}
  67     else if color == black {"black".to_string()}
  68     else if color == white {"white".to_string()}
  69     else if color == imaginary {"imaginary".to_string()}
  70     else if color == purple {"purple".to_string()}
  71     else if color == orange {"orange".to_string()}
  72     else {"unknown".to_string()}
  73 }