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// RUN: %target-typecheck-verify-swift -target %target-cpu-apple-macosx10.15 -swift-version 5 -strict-concurrency=complete
// REQUIRES: objc_interop
// REQUIRES: OS=macosx
import SwiftUI
@MainActor
class Visibility: ObservableObject {
nonisolated init() {}
@Published var yes = false // some nonsense
}
struct CoffeeTrackerView: View {
nonisolated init() {}
@ObservedObject var showDrinkList: Visibility = Visibility()
var storage: Visibility = Visibility()
var body: some View {
VStack {
Button(action: {}) {
Image(self.showDrinkList.yes ? "add-coffee" : "add-tea")
.renderingMode(.template)
}
}
}
}
@MainActor
func fromMainActor() async {
let view = CoffeeTrackerView()
_ = view.body
_ = view.showDrinkList
_ = view.storage
}
func fromConcurrencyAware() async {
let view = CoffeeTrackerView() // synthesized 'init' is 'nonisolated'
// expected-note@+3 {{property access is 'async'}}
// expected-warning@+2 {{non-sendable type 'some View' in implicitly asynchronous access to main actor-isolated property 'body' cannot cross actor boundary}}
// expected-warning@+1 {{expression is 'async' but is not marked with 'await'}}
_ = view.body
// expected-note@+2 {{property access is 'async'}}
// expected-warning@+1 {{expression is 'async' but is not marked with 'await'}}
_ = view.showDrinkList
_ = view.storage
}
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