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// RUN: %target-typecheck-verify-swift -disable-availability-checking
// REQUIRES: concurrency
actor SomeActor { }
@globalActor
struct GlobalActor {
static var shared: SomeActor { SomeActor() }
}
@globalActor
struct GenericGlobalActor<T> {
static var shared: SomeActor { SomeActor() }
}
protocol P1 {
associatedtype Assoc
@GlobalActor func method1()
@GenericGlobalActor<Int> func method2() // expected-note{{}}
@GenericGlobalActor<Assoc> func method3()
func method4() // expected-note{{mark the protocol requirement 'method4()' 'async' to allow actor-isolated conformances}}
}
protocol P2 {
@GlobalActor func asyncMethod1() async
@GenericGlobalActor<Int> func asyncMethod2() async
func asyncMethod3() async
}
class C1 : P1, P2 {
// expected-note@-1{{add '@preconcurrency' to the 'P1' conformance to defer isolation checking to run time}}
typealias Assoc = String
func method1() { }
@GenericGlobalActor<String> func method2() { } // expected-warning{{global actor 'GenericGlobalActor<String>'-isolated instance method 'method2()' cannot be used to satisfy global actor 'GenericGlobalActor<Int>'-isolated protocol requirement}}
@GenericGlobalActor<String >func method3() { }
@GlobalActor func method4() { } // expected-warning{{global actor 'GlobalActor'-isolated instance method 'method4()' cannot be used to satisfy nonisolated protocol requirement}}
// Okay: we can ignore the mismatch in global actor types for 'async' methods.
func asyncMethod1() async { }
@GenericGlobalActor<String> func asyncMethod2() async { }
@GlobalActor func asyncMethod3() async { }
}
protocol NonIsolatedRequirement {
// expected-note@+1 {{mark the protocol requirement 'requirement()' 'async' to allow actor-isolated conformances}}
func requirement()
}
@MainActor class OnMain {}
extension OnMain: NonIsolatedRequirement {
// expected-note@-1{{add '@preconcurrency' to the 'NonIsolatedRequirement' conformance to defer isolation checking to run time}}
// expected-warning@+2 {{main actor-isolated instance method 'requirement()' cannot be used to satisfy nonisolated protocol requirement}}
// expected-note@+1 {{add 'nonisolated' to 'requirement()' to make this instance method not isolated to the actor}}
func requirement() {}
}
// expected-note@+1 {{calls to global function 'downgrade()' from outside of its actor context are implicitly asynchronous}}
@preconcurrency @MainActor func downgrade() {}
extension OnMain {
struct Nested {
// expected-note@+1 {{add '@MainActor' to make instance method 'test()' part of global actor 'MainActor'}}
func test() {
// expected-warning@+1 {{call to main actor-isolated global function 'downgrade()' in a synchronous nonisolated context}}
downgrade()
}
}
}
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