| // RUN: %target-typecheck-verify-swift -typecheck -swift-version 4 %s -verify |
| |
| protocol P0 { } |
| protocol Q0: P0 { } |
| |
| protocol P1 { |
| associatedtype AssocP1: Q0 |
| |
| func getAssocP1() -> AssocP1 |
| } |
| |
| protocol P2 : P1 { |
| associatedtype AssocP2: P1 |
| |
| func getAssocP2() -> AssocP2 |
| } |
| |
| protocol P3 { |
| associatedtype AssocP3: P0 |
| |
| func getAssocP3() -> AssocP3 |
| } |
| |
| protocol P4: P3 { } |
| |
| protocol P5 : P4 { |
| associatedtype AssocP5 where AssocP3: Q0 |
| } |
| |
| func acceptP0<T: P0>(_: T) { } |
| func acceptQ0<T: Q0>(_: T) { } |
| func acceptP1<T: P1>(_: T) { } |
| func acceptP2<T: P2>(_: T) { } |
| func acceptP3<T: P3>(_: T) { } |
| |
| |
| func testPaths1<T: P2 & P4>(_ t: T) { |
| acceptP0(t.getAssocP2().getAssocP1()) |
| acceptP0(t.getAssocP3()) |
| } |
| |
| func testPaths2<U: P2 & P4>(_ t: U) where U.AssocP3 == U.AssocP2.AssocP1 { |
| acceptP0(t.getAssocP2().getAssocP1()) |
| } |
| |
| func testPaths3<V: P5>(_ v: V) { |
| acceptP0(v.getAssocP3()) |
| acceptQ0(v.getAssocP3()) |
| } |
| |
| protocol P6Unordered: P5Unordered { // expected-note{{conformance constraint 'Self.A': 'P0' implied here}} |
| associatedtype A: P0 // expected-warning{{redundant conformance constraint 'Self.A': 'P0'}} |
| // expected-warning@-1{{redeclaration of associated type 'A'}} |
| } |
| |
| protocol P5Unordered { |
| associatedtype A: P0 // expected-note{{'A' declared here}} |
| |
| func getA() -> A |
| } |
| |
| func testUnorderedP5_P6<W: P6Unordered>(_ w: W) { |
| acceptP0(w.getA()) |
| } |