tests/ui/hygiene/auxiliary/variants.rs

   1 #![feature(decl_macro)]
   2
   3 #[rustfmt::skip]
   4 macro x($macro_name:ident, $macro2_name:ident, $type_name:ident, $variant_name:ident) {
   5     #[repr(u8)]
   6     pub enum $type_name {
   7         Variant = 0,
   8         $variant_name = 1,
   9     }
  10
  11     #[macro_export]
  12     macro_rules! $macro_name {
  13         () => {{
  14             assert_eq!($type_name::Variant as u8, 0);
  15             assert_eq!($type_name::$variant_name as u8, 1);
  16             assert_eq!(<$type_name>::Variant as u8, 0);
  17             assert_eq!(<$type_name>::$variant_name as u8, 1);
  18         }};
  19     }
  20
  21     pub macro $macro2_name {
  22         () => {{
  23             assert_eq!($type_name::Variant as u8, 0);
  24             assert_eq!($type_name::$variant_name as u8, 1);
  25             assert_eq!(<$type_name>::Variant as u8, 0);
  26             assert_eq!(<$type_name>::$variant_name as u8, 1);
  27         }},
  28     }
  29 }
  30
  31 x!(test_variants, test_variants2, MyEnum, Variant);
  32
  33 pub fn check_variants() {
  34     test_variants!();
  35     test_variants2!();
  36 }