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67 lines
1.3 KiB
Swift
67 lines
1.3 KiB
Swift
// RUN: %target-typecheck-verify-swift -swift-version 4
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// RUN: %target-swift-frontend -typecheck %s -debug-generic-signatures 2>&1 | %FileCheck %s
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protocol P0 { }
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protocol Q0: P0 { }
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protocol P1 {
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associatedtype AssocP1: Q0
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func getAssocP1() -> AssocP1
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}
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protocol P2 : P1 {
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associatedtype AssocP2: P1
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func getAssocP2() -> AssocP2
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}
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protocol P3 {
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associatedtype AssocP3: P0
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func getAssocP3() -> AssocP3
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}
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protocol P4: P3 { }
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protocol P5 : P4 {
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associatedtype AssocP5 where AssocP3: Q0
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}
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func acceptP0<T: P0>(_: T) { }
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func acceptQ0<T: Q0>(_: T) { }
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func acceptP1<T: P1>(_: T) { }
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func acceptP2<T: P2>(_: T) { }
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func acceptP3<T: P3>(_: T) { }
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func testPaths1<T: P2 & P4>(_ t: T) {
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acceptP0(t.getAssocP2().getAssocP1())
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acceptP0(t.getAssocP3())
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}
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func testPaths2<U: P2 & P4>(_ t: U) where U.AssocP3 == U.AssocP2.AssocP1 {
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acceptP0(t.getAssocP2().getAssocP1())
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}
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func testPaths3<V: P5>(_ v: V) {
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acceptP0(v.getAssocP3())
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acceptQ0(v.getAssocP3())
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}
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// CHECK-LABEL: .P6Unordered@
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// CHECK-NEXT: Requirement signature: <Self where Self : P5Unordered>
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protocol P6Unordered: P5Unordered {
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associatedtype A: P0 // expected-warning{{redeclaration of associated type 'A'}}
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}
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protocol P5Unordered {
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associatedtype A: P0 // expected-note{{'A' declared here}}
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func getA() -> A
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}
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func testUnorderedP5_P6<W: P6Unordered>(_ w: W) {
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acceptP0(w.getA())
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}
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