src/test/ui/associated-types/associated-types-ref-from-struct.rs

   1 // run-pass
   2 // Test associated type references in structure fields.
   3
   4 // pretty-expanded FIXME #23616
   5
   6 trait Test {
   7     type V;
   8
   9     fn test(&self, value: &Self::V) -> bool;
  10 }
  11
  12 struct TesterPair<T:Test> {
  13     tester: T,
  14     value: T::V,
  15 }
  16
  17 impl<T:Test> TesterPair<T> {
  18     fn new(tester: T, value: T::V) -> TesterPair<T> {
  19         TesterPair { tester: tester, value: value }
  20     }
  21
  22     fn test(&self) -> bool {
  23         self.tester.test(&self.value)
  24     }
  25 }
  26
  27 struct EqU32(u32);
  28 impl Test for EqU32 {
  29     type V = u32;
  30
  31     fn test(&self, value: &u32) -> bool {
  32         self.0 == *value
  33     }
  34 }
  35
  36 struct EqI32(i32);
  37 impl Test for EqI32 {
  38     type V = i32;
  39
  40     fn test(&self, value: &i32) -> bool {
  41         self.0 == *value
  42     }
  43 }
  44
  45 fn main() {
  46     let tester = TesterPair::new(EqU32(22), 23);
  47     tester.test();
  48
  49     let tester = TesterPair::new(EqI32(22), 23);
  50     tester.test();
  51 }