src/test/ui/or-patterns/box-patterns.rs

   1 // Test or-patterns with box-patterns
   2
   3 // run-pass
   4
   5 #![feature(or_patterns)]
   6 #![feature(box_patterns)]
   7
   8 #[derive(Debug, PartialEq)]
   9 enum MatchArm {
  10     Arm(usize),
  11     Wild,
  12 }
  13
  14 #[derive(Debug)]
  15 enum Test {
  16     Foo,
  17     Bar,
  18     Baz,
  19     Qux,
  20 }
  21
  22 fn test(x: Option<Box<Test>>) -> MatchArm {
  23     match x {
  24         Some(box Test::Foo | box Test::Bar) => MatchArm::Arm(0),
  25         Some(box Test::Baz) => MatchArm::Arm(1),
  26         Some(_) => MatchArm::Arm(2),
  27         _ => MatchArm::Wild,
  28     }
  29 }
  30
  31 fn main() {
  32     assert_eq!(test(Some(Box::new(Test::Foo))), MatchArm::Arm(0));
  33     assert_eq!(test(Some(Box::new(Test::Bar))), MatchArm::Arm(0));
  34     assert_eq!(test(Some(Box::new(Test::Baz))), MatchArm::Arm(1));
  35     assert_eq!(test(Some(Box::new(Test::Qux))), MatchArm::Arm(2));
  36     assert_eq!(test(None), MatchArm::Wild);
  37 }