src/test/ui/mir/mir_codegen_switch.rs

   1 // run-pass
   2 enum Abc {
   3     A(#[allow(unused_tuple_struct_fields)] u8),
   4     B(#[allow(unused_tuple_struct_fields)] i8),
   5     C,
   6     D,
   7 }
   8
   9 fn foo(x: Abc) -> i32 {
  10     match x {
  11         Abc::C => 3,
  12         Abc::D => 4,
  13         Abc::B(_) => 2,
  14         Abc::A(_) => 1,
  15     }
  16 }
  17
  18 fn foo2(x: Abc) -> bool {
  19     match x {
  20         Abc::D => true,
  21         _ => false
  22     }
  23 }
  24
  25 fn main() {
  26     assert_eq!(1, foo(Abc::A(42)));
  27     assert_eq!(2, foo(Abc::B(-100)));
  28     assert_eq!(3, foo(Abc::C));
  29     assert_eq!(4, foo(Abc::D));
  30
  31     assert_eq!(false, foo2(Abc::A(1)));
  32     assert_eq!(false, foo2(Abc::B(2)));
  33     assert_eq!(false, foo2(Abc::C));
  34     assert_eq!(true, foo2(Abc::D));
  35 }