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// RUN: %target-run-simple-swift(-enable-experimental-feature Lifetimes)
// REQUIRES: executable_test
// REQUIRES: reflection
// REQUIRES: swift_feature_Lifetimes
import StdlibUnittest
import Swift
let suite = TestSuite("Optional")
defer { runAllTests() }
func isCopyable<T: ~Copyable & ~Escapable>(_: T.Type) -> Bool { false }
func isCopyable<T: ~Escapable>(_: T.Type) -> Bool { true }
func isBitwiseCopyable<T: ~Copyable & ~Escapable>(_: T.Type) -> Bool { false }
func isBitwiseCopyable<T: BitwiseCopyable & ~Escapable>(_: T.Type) -> Bool { true }
#if $NonescapableTypes
func isEscapable<T: ~Escapable & ~Copyable>(_: T.Type) -> Bool { false }
func isEscapable<T: ~Copyable>(_: T.Type) -> Bool { true }
#endif
struct TrivialStruct {}
struct NoncopyableStruct: ~Copyable {}
class RegularClass {}
#if $NonescapableTypes
struct NonescapableStruct: ~Escapable, BitwiseCopyable {}
struct NoncopyableNonescapableStruct: ~Copyable, ~Escapable {}
struct NonescapableNontrivialStruct: ~Escapable {
let foo: RegularClass? = nil
}
#endif
suite.test("Copyability") {
expectTrue(isCopyable(Optional<TrivialStruct>.self))
expectFalse(isCopyable(Optional<NoncopyableStruct>.self))
expectTrue(isCopyable(Optional<RegularClass>.self))
#if $NonescapableTypes
expectTrue(isCopyable(Optional<NonescapableStruct>.self))
expectFalse(isCopyable(Optional<NoncopyableNonescapableStruct>.self))
expectTrue(isCopyable(Optional<NonescapableNontrivialStruct>.self))
#endif
}
suite.test("BitwiseCopyability") {
expectTrue(isBitwiseCopyable(Optional<TrivialStruct>.self))
expectFalse(isBitwiseCopyable(Optional<NoncopyableStruct>.self))
expectFalse(isBitwiseCopyable(Optional<RegularClass>.self))
#if $NonescapableTypes
expectTrue(isBitwiseCopyable(Optional<NonescapableStruct>.self))
expectFalse(isBitwiseCopyable(Optional<NoncopyableNonescapableStruct>.self))
expectFalse(isBitwiseCopyable(Optional<NonescapableNontrivialStruct>.self))
#endif
}
#if $NonescapableTypes
suite.test("Escapability") {
expectTrue(isEscapable(Optional<TrivialStruct>.self))
expectTrue(isEscapable(Optional<NoncopyableStruct>.self))
expectTrue(isEscapable(Optional<RegularClass>.self))
expectFalse(isEscapable(Optional<NonescapableStruct>.self))
expectFalse(isEscapable(Optional<NoncopyableNonescapableStruct>.self))
expectFalse(isEscapable(Optional<NonescapableNontrivialStruct>.self))
}
#endif
func apply<T, U>(
_ input: T,
_ body: (T) -> U
) -> U {
body(input)
}
func apply2<T: ~Copyable, U: ~Copyable>(
_ input: consuming T,
_ body: (consuming T) -> U
) -> U {
body(input)
}
suite.test("Initializer references") {
do {
let r = apply(TrivialStruct(), Optional.init)
expectTrue(r != nil)
}
do {
let r = apply2(NoncopyableStruct(), Optional.init)
expectTrue(r != nil)
}
}
suite.test("expectNotNil()") {
func opt1<T: ~Copyable>(_ t: consuming T) -> T? { Optional.some(t) }
_ = expectNotNil(opt1(TrivialStruct()))
_ = expectNotNil(opt1(NoncopyableStruct()))
_ = expectNotNil(opt1(RegularClass()))
#if $NonescapableTypes
@_lifetime(copy t)
func opt2<T: ~Copyable & ~Escapable>(_ t: consuming T) -> T? { t }
let ne = NonescapableStruct()
_ = expectNotNil(opt2(ne))
let ncne = NoncopyableNonescapableStruct()
_ = expectNotNil(opt2(ncne))
let nent = NonescapableNontrivialStruct()
_ = expectNotNil(opt2(nent))
#endif // $NonescapableTypes
}
suite.test("expectNil()") {
func opt1<T: ~Copyable>(_ t: consuming T) -> T? { nil }
expectNil(opt1(TrivialStruct()))
expectNil(opt1(NoncopyableStruct()))
expectNil(opt1(RegularClass()))
#if $NonescapableTypes
@_lifetime(copy t)
func opt2<T: ~Copyable & ~Escapable>(_ t: consuming T) -> T? { nil }
let ne = NonescapableStruct()
expectNil(opt2(ne))
let ncne = NoncopyableNonescapableStruct()
expectNil(opt2(ncne))
let nent = NonescapableNontrivialStruct()
expectNil(opt2(nent))
#endif // $NonescapableTypes
}
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