src/test/ui/proc-macro/auxiliary/external-crate-var.rs

   1 pub struct ExternFoo;
   2
   3 pub trait ExternTrait {
   4     const CONST: u32;
   5     type Assoc;
   6 }
   7
   8 impl ExternTrait for ExternFoo {
   9     const CONST: u32 = 0;
  10     type Assoc = ExternFoo;
  11 }
  12
  13 #[macro_export]
  14 macro_rules! external { () => {
  15     mod bar {
  16         #[derive(Double)]
  17         struct Bar($crate::ExternFoo);
  18     }
  19
  20     mod qself {
  21         #[derive(Double)]
  22         struct QSelf(<$crate::ExternFoo as $crate::ExternTrait>::Assoc);
  23     }
  24
  25     mod qself_recurse {
  26         #[derive(Double)]
  27         struct QSelfRecurse(<
  28             <$crate::ExternFoo as $crate::ExternTrait>::Assoc
  29             as $crate::ExternTrait>::Assoc
  30         );
  31     }
  32
  33     mod qself_in_const {
  34         #[derive(Double)]
  35         #[repr(u32)]
  36         enum QSelfInConst {
  37             Variant = <$crate::ExternFoo as $crate::ExternTrait>::CONST,
  38         }
  39     }
  40 } }