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// RUN: %target-swift-frontend -emit-sil -verify %s
struct NC: ~Copyable {
borrowing func borrow() {}
mutating func mutate() {}
consuming func consume() {}
}
func borrow(_: borrowing NC) {}
func consume(_: consuming NC) {}
func mutate(_: inout NC) {}
func unwrapBorrow_Borrow(x: borrowing NC?) {
x!.borrow()
borrow(x!)
x!.borrow()
borrow(x!)
}
func unwrapConsume_Borrow(x: borrowing NC?) { // expected-error{{cannot be consumed}}
x!.consume() // expected-note{{consumed here}}
consume(x!) // expected-note{{consumed here}}
x!.consume() // expected-note{{consumed here}}
consume(x!) // expected-note{{consumed here}}
}
func unwrapBorrowMutateConsume_Consume(x: consuming NC?) {
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
consume(x!)
}
func unwrapBorrowMutateConsume2_Consume(x: consuming NC?) {
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
x!.consume()
}
func unwrapBorrowMutateConsumeBorrow_Consume(x: consuming NC?) { // expected-error {{used after consume}}
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
consume(x!) // expected-note{{consumed here}}
x!.borrow() // expected-note{{used here}}
borrow(x!)
}
func unwrapBorrowMutateConsumeMutate_Consume(x: consuming NC?) { // expected-error {{used after consume}}
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
consume(x!) // expected-note{{consumed here}}
x!.mutate() // expected-note{{used here}}
mutate(&x!)
}
func unwrapBorrowMutateConsumeInitBorrow_Consume(x: consuming NC?, y: consuming NC?) {
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
consume(x!)
x = y
x!.borrow()
borrow(x!)
}
func unwrapBorrowMutateConsumeInitMutate_Consume(x: consuming NC?, y: consuming NC?) {
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
consume(x!)
x = y
x!.mutate()
mutate(&x!)
}
func unwrapBorrowMutateConsumeInitBorrowMutateConsume_Consume(x: consuming NC?, y: consuming NC?) {
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
consume(x!)
x = y
x!.mutate()
x!.borrow()
mutate(&x!)
borrow(x!)
consume(x!)
}
func unwrapBorrowMutate_Mutate(x: inout NC?) {
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
}
func unwrapBorrowMutateConsume_Mutate(x: inout NC?) { // expected-error {{missing reinitialization}}
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
x!.consume() // expected-note {{consumed here}}
}
func unwrapBorrowMutateConsumeInit_Mutate(x: inout NC?, y: consuming NC) {
x!.borrow()
x!.mutate()
borrow(x!)
mutate(&x!)
x!.consume() // expected-note{{consumed here}}
x! = y // expected-error{{cannot partially reinitialize}}
}
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