3 #![feature(associated_type_bounds)]
6 trait Tr1 { type As1; }
7 trait Tr2 { type As2; }
8 trait Tr3 { type As3; }
9 trait Tr4<'a> { type As4; }
10 trait Tr5 { type As5; }
12 impl Tr1 for &str { type As1 = bool; }
13 impl Tr2 for bool { type As2 = u8; }
14 impl Tr3 for u8 { type As3 = fn() -> u8; }
15 impl Tr1 for () { type As1 = (usize,); }
16 impl<'a> Tr4<'a> for (usize,) { type As4 = u8; }
17 impl Tr5 for bool { type As5 = u16; }
19 enum En1<T: Tr1<As1: Tr2>> {
22 Inner(<T::As1 as Tr2>::As2),
25 fn wrap_en1_1<T>(x: T) -> En1<T> where T: Tr1, T::As1: Tr2 {
29 fn wrap_en1_2<T>(x: T::As1) -> En1<T> where T: Tr1, T::As1: Tr2 {
33 fn wrap_en1_3<T>(x: <T::As1 as Tr2>::As2) -> En1<T> where T: Tr1, T::As1: Tr2 {
37 enum En2<T: Tr1<As1: Tr2<As2: Tr3>>> {
40 V2(<T::As1 as Tr2>::As2),
41 V3(<<T::As1 as Tr2>::As2 as Tr3>::As3),
44 enum En3<T: Tr1<As1: 'static>> {
49 enum En4<'x1, 'x2, T: Tr1<As1: for<'l> Tr4<'l>>> {
50 V0(&'x1 <T::As1 as Tr4<'x1>>::As4),
51 V1(&'x2 <T::As1 as Tr4<'x2>>::As4),
54 enum _En5<'x1, 'x2, T: Tr1<As1: for<'l> Tr4<'l, As4: Copy>>> {
55 _V0(&'x1 <T::As1 as Tr4<'x1>>::As4),
56 _V1(&'x2 <T::As1 as Tr4<'x2>>::As4),
61 T: Tr1<As1: Tr2 + 'static + Tr5>,
64 V1(<T::As1 as Tr2>::As2),
66 V3(<T::As1 as Tr5>::As5),
69 enum _En7<'a, 'b, T> // `<T::As1 as Tr2>::As2: 'a` is implied.
74 V1(&'b <T::As1 as Tr2>::As2),
77 fn _make_en7<'a, 'b, T>(x: _En7<'a, 'b, T>)
89 enum EnSelf<T> where Self: Tr1<As1: Tr2> {
91 V1(<Self as Tr1>::As1),
92 V2(<<Self as Tr1>::As1 as Tr2>::As2),
95 impl Tr1 for EnSelf<&'static str> { type As1 = bool; }
98 if let En1::Outest("foo") = wrap_en1_1::<_>("foo") {} else { panic!() };
99 if let En1::Outer(true) = wrap_en1_2::<&str>(true) {} else { panic!() };
100 if let En1::Inner(24u8) = wrap_en1_3::<&str>(24u8) {} else { panic!() };
102 let _ = En2::<_>::V0("151571");
103 let _ = En2::<&str>::V1(false);
104 let _ = En2::<&str>::V2(42u8);
105 let _ = En2::<&str>::V3(|| 12u8);
107 let _ = En3::<_>::V0("deadbeef");
108 let _ = En3::<&str>::V1(&true);
112 let _ = En4::<()>::V0(&f1.0);
113 let _ = En4::<()>::V1(&f2.0);
115 let _ = En6::<_>::V0("bar");
116 let _ = En6::<&str>::V1(24u8);
117 let _ = En6::<&str>::V2(&false);
118 let _ = En6::<&str>::V3(12u16);
120 let _ = EnSelf::<_>::V0("foo");
121 let _ = EnSelf::<&'static str>::V1(true);
122 let _ = EnSelf::<&'static str>::V2(24u8);