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4b25dc528d
Otherwise if the member lookup gets simplified immediately and we have a recursive dynamic member lookup we will crash since we wouldn't have introduced the corresponding applicable function constraint. rdar://164321858
655 lines
36 KiB
Swift
655 lines
36 KiB
Swift
// RUN: %target-swift-frontend -Xllvm -sil-print-types -emit-sil -verify -Xllvm -sil-disable-pass=simplification %s | %FileCheck %s
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struct Point {
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let x: Int
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var y: Int
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}
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struct Rectangle {
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var topLeft, bottomRight: Point
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}
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@dynamicMemberLookup
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struct Lens<T> {
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var obj: T
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init(_ obj: T) {
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self.obj = obj
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}
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subscript<U>(dynamicMember member: KeyPath<T, U>) -> Lens<U> {
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get { return Lens<U>(obj[keyPath: member]) }
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}
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subscript<U>(dynamicMember member: WritableKeyPath<T, U>) -> Lens<U> {
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get { return Lens<U>(obj[keyPath: member]) }
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set { obj[keyPath: member] = newValue.obj }
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}
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// Used to make sure that keypath and string based lookup are
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// property disambiguated.
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subscript(dynamicMember member: String) -> Lens<Int> {
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return Lens<Int>(42)
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}
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}
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var topLeft = Point(x: 0, y: 0)
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var bottomRight = Point(x: 10, y: 10)
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var lens = Lens(Rectangle(topLeft: topLeft,
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bottomRight: bottomRight))
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig
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// CHECK-NEXT: apply %{{[0-9]+}}<Rectangle, Point>({{.*}})
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig
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// CHECK-NEXT: apply %{{[0-9]+}}<Point, Int>({{.*}})
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_ = lens.topLeft.x
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig
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// CHECK-NEXT: apply %{{[0-9]+}}<Rectangle, Point>({{.*}})
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig
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// CHECK-NEXT: apply %{{[0-9]+}}<Point, Int>({{.*}})
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_ = lens.topLeft.y
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lens.topLeft = Lens(Point(x: 1, y: 2)) // Ok
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lens.bottomRight.y = Lens(12) // Ok
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@dynamicMemberLookup
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class A<T> {
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var value: T
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init(_ v: T) {
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self.value = v
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}
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subscript<U>(dynamicMember member: KeyPath<T, U>) -> U {
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get { return value[keyPath: member] }
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}
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}
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// Let's make sure that keypath dynamic member lookup
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// works with inheritance
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class B<T> : A<T> {}
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func bar(_ b: B<Point>) {
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let _: Int = b.x
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let _ = b.y
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}
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struct Point3D {
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var x, y, z: Int
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}
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// Make sure that explicitly declared members take precedence
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class C<T> : A<T> {
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var x: Float = 42
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}
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func baz(_ c: C<Point3D>) {
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// CHECK: ref_element_addr {{.*}} : $C<Point3D>, #C.x
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let _ = c.x
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// CHECK: [[Y:%.*]] = keypath $KeyPath<Point3D, Int>, (root $Point3D; stored_property #Point3D.z : $Int)
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// CHECK: [[KEYPATH:%.*]] = function_ref @$s29keypath_dynamic_member_lookup1AC0B6Memberqd__s7KeyPathCyxqd__G_tcluig
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// CHECK-NEXT: apply [[KEYPATH]]<Point3D, Int>({{.*}}, [[Y]], {{.*}})
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let _ = c.z
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}
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@dynamicMemberLookup
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struct SubscriptLens<T> {
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var value: T
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subscript(foo: String) -> Int {
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get { return 42 }
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}
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subscript<U>(dynamicMember member: KeyPath<T, U>) -> U {
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get { return value[keyPath: member] }
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}
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subscript<U>(dynamicMember member: WritableKeyPath<T, U>) -> U {
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get { return value[keyPath: member] }
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set { value[keyPath: member] = newValue }
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}
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}
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func keypath_with_subscripts(_ arr: SubscriptLens<[Int]>,
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_ dict: inout SubscriptLens<[String: Int]>) {
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// CHECK: keypath $WritableKeyPath<Array<Int>, ArraySlice<Int>>, (root $Array<Int>; settable_property $ArraySlice<Int>, id @$sSays10ArraySliceVyxGSnySiGcig : {{.*}})
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_ = arr[0..<3]
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// CHECK: keypath $KeyPath<Array<Int>, Int>, (root $Array<Int>; gettable_property $Int, id @$sSa5countSivg : {{.*}})
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for idx in 0..<arr.count {
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// CHECK: keypath $WritableKeyPath<Array<Int>, Int>, (root $Array<Int>; settable_property $Int, id @$sSayxSicig : {{.*}})
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let _ = arr[idx]
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// CHECK: keypath $WritableKeyPath<Array<Int>, Int>, (root $Array<Int>; settable_property $Int, id @$sSayxSicig : {{.*}})
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print(arr[idx])
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}
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup13SubscriptLensVySiSScig
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_ = arr["hello"]
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup13SubscriptLensVySiSScig
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_ = dict["hello"]
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if let index = dict.value.firstIndex(where: { $0.value == 42 }) {
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// CHECK: keypath $KeyPath<Dictionary<String, Int>, (key: String, value: Int)>, (root $Dictionary<String, Int>; gettable_property $(key: String, value: Int), id @$sSDyx3key_q_5valuetSD5IndexVyxq__Gcig : {{.*}})
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let _ = dict[index]
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}
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// CHECK: keypath $WritableKeyPath<Dictionary<String, Int>, Optional<Int>>, (root $Dictionary<String, Int>; settable_property $Optional<Int>, id @$sSDyq_Sgxcig : {{.*}})
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dict["ultimate question"] = 42
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}
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struct DotStruct {
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var x, y: Int
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}
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class DotClass {
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var x, y: Int
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init(x: Int, y: Int) {
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self.x = x
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self.y = y
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}
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}
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@dynamicMemberLookup
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struct DotLens<T> {
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var value: T
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subscript<U>(dynamicMember member: WritableKeyPath<T, U>) -> U {
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get { return value[keyPath: member] }
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set { value[keyPath: member] = newValue }
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}
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subscript<U>(dynamicMember member: ReferenceWritableKeyPath<T, U>) -> U {
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get { return value[keyPath: member] }
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set { value[keyPath: member] = newValue }
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}
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}
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func dot_struct_test(_ lens: inout DotLens<DotStruct>) {
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// CHECK: keypath $WritableKeyPath<DotStruct, Int>, (root $DotStruct; stored_property #DotStruct.x : $Int)
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lens.x = 1
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// CHECK: keypath $WritableKeyPath<DotStruct, Int>, (root $DotStruct; stored_property #DotStruct.y : $Int)
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let _ = lens.y
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}
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func dot_class_test(_ lens: inout DotLens<DotClass>) {
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// CHECK: keypath $ReferenceWritableKeyPath<DotClass, Int>, (root $DotClass; settable_property $Int, id #DotClass.x!getter : (DotClass) -> () -> Int, getter @$s29keypath_dynamic_member_lookup8DotClassC1xSivpACTK : {{.*}})
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lens.x = 1
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// CHECK: keypath $ReferenceWritableKeyPath<DotClass, Int>, (root $DotClass; settable_property $Int, id #DotClass.y!getter : (DotClass) -> () -> Int, getter @$s29keypath_dynamic_member_lookup8DotClassC1ySivpACTK : {{.*}})
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let _ = lens.y
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}
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@dynamicMemberLookup
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struct OverloadedLens<T> {
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var value: T
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subscript<U>(keyPath: KeyPath<T, U>) -> U {
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get { return value[keyPath: keyPath] }
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}
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subscript<U>(dynamicMember keyPath: KeyPath<T, U>) -> U {
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get { return value[keyPath: keyPath] }
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}
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}
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// Make sure if there is a subscript which accepts key path,
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// existing dynamic member overloads wouldn't interfere.
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func test_direct_subscript_ref(_ lens: OverloadedLens<Point>) {
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup14OverloadedLensVyqd__s7KeyPathCyxqd__Gcluig
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_ = lens[\.x]
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup14OverloadedLensVyqd__s7KeyPathCyxqd__Gcluig
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_ = lens[\.y]
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup14OverloadedLensV0B6Memberqd__s7KeyPathCyxqd__G_tcluig
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_ = lens.x
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup14OverloadedLensV0B6Memberqd__s7KeyPathCyxqd__G_tcluig
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_ = lens.y
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}
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func test_keypath_dynamic_lookup_inside_keypath() {
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// CHECK: keypath $KeyPath<Point, Int>, (root $Point; stored_property #Point.x : $Int)
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// CHECK-NEXT: keypath $KeyPath<Lens<Point>, Lens<Int>>, (root $Lens<Point>; gettable_property $Lens<Int>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig : {{.*}})
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_ = \Lens<Point>.x
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// CHECK: keypath $WritableKeyPath<Rectangle, Point>, (root $Rectangle; stored_property #Rectangle.topLeft : $Point)
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// CHECK-NEXT: keypath $WritableKeyPath<Point, Int>, (root $Point; stored_property #Point.y : $Int)
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// CHECK-NEXT: keypath $WritableKeyPath<Lens<Rectangle>, Lens<Int>>, (root $Lens<Rectangle>; settable_property $Lens<Point>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig : {{.*}})
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_ = \Lens<Rectangle>.topLeft.y
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// CHECK: keypath $KeyPath<Array<Int>, Int>, (root $Array<Int>; gettable_property $Int, id @$sSa5countSivg : {{.*}})
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// CHECK-NEXT: keypath $KeyPath<Lens<Array<Int>>, Lens<Int>>, (root $Lens<Array<Int>>; gettable_property $Lens<Int>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig : {{.*}})
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_ = \Lens<[Int]>.count
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// CHECK: keypath $WritableKeyPath<Array<Int>, Int>, (root $Array<Int>; settable_property $Int, id @$sSayxSicig : {{.*}})
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// CHECK-NEXT: keypath $WritableKeyPath<Lens<Array<Int>>, Lens<Int>>, (root $Lens<Array<Int>>; settable_property $Lens<Int>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig : {{.*}})
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_ = \Lens<[Int]>.[0]
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// CHECK: keypath $WritableKeyPath<Array<Array<Int>>, Array<Int>>, (root $Array<Array<Int>>; settable_property $Array<Int>, id @$sSayxSicig : {{.*}})
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// CHECK-NEXT: keypath $KeyPath<Array<Int>, Int>, (root $Array<Int>; gettable_property $Int, id @$sSa5countSivg : {{.*}})
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// CHECK-NEXT: keypath $KeyPath<Lens<Array<Array<Int>>>, Lens<Int>>, (root $Lens<Array<Array<Int>>>; settable_property $Lens<Array<Int>>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig : {{.*}})
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_ = \Lens<[[Int]]>.[0].count
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}
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func test_recursive_dynamic_lookup(_ pointLens: Lens<Lens<Point>>, _ arrLens: Lens<Lens<[Point]>>) {
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// CHECK: keypath $KeyPath<Point, Int>, (root $Point; stored_property #Point.x : $Int)
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// CHECK-NEXT: keypath $KeyPath<Lens<Point>, Lens<Int>>, (root $Lens<Point>; gettable_property $Lens<Int>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig : {{.*}})
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig
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_ = pointLens.x
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// CHECK: keypath $KeyPath<Point, Int>, (root $Point; stored_property #Point.x : $Int)
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig
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_ = pointLens.obj.x
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// CHECK: [[FIRST_OBJ:%.*]] = struct_extract {{.*}} : $Lens<Lens<Point>>, #Lens.obj
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// CHECK-NEXT: [[SECOND_OBJ:%.*]] = struct_extract [[FIRST_OBJ]] : $Lens<Point>, #Lens.obj
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// CHECK-NEXT: struct_extract [[SECOND_OBJ]] : $Point, #Point.y
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_ = pointLens.obj.obj.y
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// CHECK: keypath $KeyPath<Point, Int>, (root $Point; stored_property #Point.x : $Int)
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// CHECK-NEXT: keypath $KeyPath<Lens<Point>, Lens<Int>>, (root $Lens<Point>; gettable_property $Lens<Int>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig : {{.*}})
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// CHECK-NEXT: keypath $KeyPath<Lens<Lens<Point>>, Lens<Lens<Int>>>, (root $Lens<Lens<Point>>; gettable_property $Lens<Lens<Int>>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig : {{.*}})
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_ = \Lens<Lens<Point>>.x
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// CHECK: keypath $WritableKeyPath<Rectangle, Point>, (root $Rectangle; stored_property #Rectangle.topLeft : $Point)
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// CHECK-NEXT: keypath $WritableKeyPath<Lens<Rectangle>, Lens<Point>>, (root $Lens<Rectangle>; settable_property $Lens<Point>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig : {{.*}})
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// CHECK-NEXT: keypath $KeyPath<Point, Int>, (root $Point; stored_property #Point.x : $Int)
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// CHECK-NEXT: keypath $KeyPath<Lens<Point>, Lens<Int>>, (root $Lens<Point>; gettable_property $Lens<Int>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig : {{.*}})
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// CHECK-NEXT: keypath $KeyPath<Lens<Lens<Rectangle>>, Lens<Lens<Int>>>, (root $Lens<Lens<Rectangle>>; settable_property $Lens<Lens<Point>>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig : {{.*}})
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_ = \Lens<Lens<Rectangle>>.topLeft.x
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// CHECK: keypath $WritableKeyPath<Array<Point>, Point>, (root $Array<Point>; settable_property $Point, id @$sSayxSicig
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// CHECK-NEXT: keypath $WritableKeyPath<Lens<Array<Point>>, Lens<Point>>, (root $Lens<Array<Point>>; settable_property $Lens<Point>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig
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// CHECK: keypath $KeyPath<Point, Int>, (root $Point; stored_property #Point.x : $Int)
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// CHECK-NEXT: keypath $KeyPath<Lens<Point>, Lens<Int>>, (root $Lens<Point>; gettable_property $Lens<Int>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig
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_ = arrLens[0].x // arrLens[dynamicMember: \.[dynamicMember: \.[0]]][dynamicMember: \.[dynamicMember: \.x]]
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_ = \Lens<Lens<[Point]>>.[0].x // \Lens<Lens<[Point]>>.[dynamicMember: \.[dynamicMember: \.[0]]].[dynamicMember: \.[dynamicMember: \.x]]
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// CHECK: keypath $WritableKeyPath<Array<Point>, Point>, (root $Array<Point>; settable_property $Point, id @$sSayxSicig
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// CHECK-NEXT: keypath $WritableKeyPath<Lens<Array<Point>>, Lens<Point>>, (root $Lens<Array<Point>>; settable_property $Lens<Point>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig
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// CHECK-NEXT: keypath $KeyPath<Point, Int>, (root $Point; stored_property #Point.x : $Int)
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// CHECK-NEXT: keypath $KeyPath<Lens<Point>, Lens<Int>>, (root $Lens<Point>; gettable_property $Lens<Int>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs7KeyPathCyxqd__G_tcluig
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// CHECK-NEXT: keypath $KeyPath<Lens<Lens<Array<Point>>>, Lens<Lens<Int>>>, (root $Lens<Lens<Array<Point>>>; settable_property $Lens<Lens<Point>>, id @$s29keypath_dynamic_member_lookup4LensV0B6MemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig
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}
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@dynamicMemberLookup
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struct RefWritableBox<T> {
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var obj: T
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init(_ obj: T) {
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self.obj = obj
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}
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subscript<U>(dynamicMember member: KeyPath<T, U>) -> U {
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get { return obj[keyPath: member] }
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}
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subscript<U>(dynamicMember member: ReferenceWritableKeyPath<T, U>) -> U {
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get { return obj[keyPath: member] }
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set { obj[keyPath: member] = newValue }
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}
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}
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func prefer_readonly_keypath_over_reference_writable() {
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class C {
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let foo: Int
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init(_ foo: Int) {
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self.foo = foo
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}
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}
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var box = RefWritableBox(C(42))
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// expected-warning@-1 {{variable 'box' was never mutated; consider changing to 'let' constant}}
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// CHECK: function_ref RefWritableBox.subscript.getter
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// CHECK-NEXT: function_ref @$s29keypath_dynamic_member_lookup14RefWritableBoxV0B6Memberqd__s7KeyPathCyxqd__G_tcluig
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_ = box.foo
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}
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// rdar://problem/52779809 - conditional conformance shadows names of members reachable through dynamic lookup
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protocol P {
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var foo: Int { get }
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}
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@dynamicMemberLookup struct Ref<T> {
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var value: T
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subscript<U>(dynamicMember member: KeyPath<T, U>) -> U {
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get { return value[keyPath: member] }
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}
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}
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extension P {
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var foo: Int { return 42 }
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}
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struct S {
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var foo: Int { return 0 }
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var baz: Int { return 1 }
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}
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struct Q {
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var bar: Int { return 1 }
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}
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extension Ref : P where T == Q {
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var baz: String { return "hello" }
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}
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func rdar52779809(_ ref1: Ref<S>, _ ref2: Ref<Q>) {
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup3RefV0B6Memberqd__s7KeyPathCyxqd__G_tcluig
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_ = ref1.foo // Ok
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup3RefV0B6Memberqd__s7KeyPathCyxqd__G_tcluig
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_ = ref1.baz // Ok
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup1PPAAE3fooSivg
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_ = ref2.foo // Ok
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// CHECK: function_ref @$s29keypath_dynamic_member_lookup3RefV0B6Memberqd__s7KeyPathCyxqd__G_tcluig
|
|
_ = ref2.bar // Ok
|
|
}
|
|
|
|
func make_sure_delayed_keypath_dynamic_member_works() {
|
|
@propertyWrapper @dynamicMemberLookup
|
|
struct Wrapper<T> {
|
|
var storage: T? = nil
|
|
|
|
var wrappedValue: T {
|
|
get { storage! }
|
|
}
|
|
|
|
var projectedValue: Wrapper<T> { self }
|
|
|
|
init() { }
|
|
|
|
init(wrappedValue: T) {
|
|
storage = wrappedValue
|
|
}
|
|
|
|
subscript<Property>(dynamicMember keyPath: KeyPath<T, Property>) -> Wrapper<Property> {
|
|
get { .init() }
|
|
}
|
|
}
|
|
|
|
struct Field {
|
|
@Wrapper var v: Bool = true
|
|
}
|
|
|
|
struct Arr {
|
|
var fields: [Field] = []
|
|
}
|
|
|
|
struct Test {
|
|
@Wrapper var data: Arr
|
|
|
|
func test(_ index: Int) {
|
|
let _ = self.$data.fields[index].v.wrappedValue
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// https://github.com/apple/swift/issues/53865
|
|
// Ambiguity in expression which matches both dynamic member lookup and
|
|
// declaration from constrained extension
|
|
|
|
@dynamicMemberLookup
|
|
struct S_53865<RawValue> {
|
|
var rawValue: RawValue
|
|
|
|
subscript<Subject>(dynamicMember keyPath: KeyPath<RawValue, Subject>) -> Subject {
|
|
rawValue[keyPath: keyPath]
|
|
}
|
|
}
|
|
|
|
extension S_53865: Hashable, Equatable where RawValue: Hashable {
|
|
func hash(into hasher: inout Hasher) {
|
|
hasher.combine(self.rawValue)
|
|
}
|
|
}
|
|
|
|
func test_constrained_ext_vs_dynamic_member() {
|
|
// CHECK: function_ref @$s29keypath_dynamic_member_lookup7S_53865VAASHRzlE9hashValueSivg
|
|
_ = S_53865<Int>(rawValue: 1).hashValue // Ok, keep choice from constrained extension
|
|
}
|
|
|
|
// https://github.com/apple/swift/issues/54310
|
|
// https://github.com/apple/swift/issues/57571
|
|
// Make sure we properly handle IUO unwraps for key path dynamic members.
|
|
|
|
struct S_54310_Base {
|
|
var i: Int!
|
|
subscript(_ x: Int) -> Int! { x }
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
struct S_54310 {
|
|
subscript(dynamicMember kp: KeyPath<S_54310_Base, Int>) -> Void { () }
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
struct S_57571 {
|
|
subscript(dynamicMember kp: KeyPath<S_54310_Base, Int>) -> Int! { 0 }
|
|
}
|
|
|
|
// CHECK-LABEL: sil hidden @$s29keypath_dynamic_member_lookup13testIUOUnwrapyyAA7S_54310V_AA7S_57571VtF
|
|
func testIUOUnwrap(_ x: S_54310, _ y: S_57571) {
|
|
// CHECK: keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; stored_property #S_54310_Base.i : $Optional<Int>; optional_force : $Int)
|
|
x.i
|
|
|
|
// CHECK: keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicig : $@convention(method) (Int, S_54310_Base) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_54310_Base, @in_guaranteed Int) -> @out Optional<Int>, indices [%$0 : $Int : $Int], indices_equals @$sSiTH : $@convention(keypath_accessor_equals) (@in_guaranteed Int, @in_guaranteed Int) -> Bool, indices_hash @$sSiTh : $@convention(keypath_accessor_hash) (@in_guaranteed Int) -> Int; optional_force : $Int)
|
|
x[5]
|
|
|
|
// CHECK: [[INNER_KP:%[0-9]+]] = keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; stored_property #S_54310_Base.i : $Optional<Int>; optional_force : $Int)
|
|
// CHECK: $KeyPath<S_54310, ()>, (root $S_54310; gettable_property $(), id @$s29keypath_dynamic_member_lookup7S_54310V0B6Memberys7KeyPathCyAA12S_54310_BaseVSiG_tcig : $@convention(method) (@guaranteed KeyPath<S_54310_Base, Int>, S_54310) -> (), getter @$s29keypath_dynamic_member_lookup7S_54310V0B6Memberys7KeyPathCyAA12S_54310_BaseVSiG_tcipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_54310, @in_guaranteed KeyPath<S_54310_Base, Int>) -> @out (), indices [%$0 : $KeyPath<S_54310_Base, Int> : $KeyPath<S_54310_Base, Int>], indices_equals @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTH : $@convention(keypath_accessor_equals) (@in_guaranteed KeyPath<S_54310_Base, Int>, @in_guaranteed KeyPath<S_54310_Base, Int>) -> Bool, indices_hash @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTh : $@convention(keypath_accessor_hash) (@in_guaranteed KeyPath<S_54310_Base, Int>) -> Int) ([[INNER_KP]])
|
|
_ = \S_54310.i
|
|
|
|
// CHECK: [[INNER_SUB_KP:%[0-9]+]] = keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicig : $@convention(method) (Int, S_54310_Base) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_54310_Base, @in_guaranteed Int) -> @out Optional<Int>, indices [%$0 : $Int : $Int], indices_equals @$sSiTH : $@convention(keypath_accessor_equals) (@in_guaranteed Int, @in_guaranteed Int) -> Bool, indices_hash @$sSiTh : $@convention(keypath_accessor_hash) (@in_guaranteed Int) -> Int; optional_force : $Int)
|
|
// CHECK: keypath $KeyPath<S_54310, ()>, (root $S_54310; gettable_property $(), id @$s29keypath_dynamic_member_lookup7S_54310V0B6Memberys7KeyPathCyAA12S_54310_BaseVSiG_tcig : $@convention(method) (@guaranteed KeyPath<S_54310_Base, Int>, S_54310) -> (), getter @$s29keypath_dynamic_member_lookup7S_54310V0B6Memberys7KeyPathCyAA12S_54310_BaseVSiG_tcipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_54310, @in_guaranteed KeyPath<S_54310_Base, Int>) -> @out (), indices [%$0 : $KeyPath<S_54310_Base, Int> : $KeyPath<S_54310_Base, Int>], indices_equals @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTH : $@convention(keypath_accessor_equals) (@in_guaranteed KeyPath<S_54310_Base, Int>, @in_guaranteed KeyPath<S_54310_Base, Int>) -> Bool, indices_hash @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTh : $@convention(keypath_accessor_hash) (@in_guaranteed KeyPath<S_54310_Base, Int>) -> Int) ([[INNER_SUB_KP]])
|
|
_ = \S_54310.[5]
|
|
|
|
// https://github.com/apple/swift/issues/57571: Make sure we can handle IUO
|
|
// unwraps in both the inner and outer key paths.
|
|
|
|
// CHECK: [[INNER_KP2:%[0-9]+]] = keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; stored_property #S_54310_Base.i : $Optional<Int>; optional_force : $Int)
|
|
// CHECK: keypath $KeyPath<S_57571, Optional<Int>>, (root $S_57571; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup7S_57571V0B6MemberSiSgs7KeyPathCyAA12S_54310_BaseVSiG_tcig : $@convention(method) (@guaranteed KeyPath<S_54310_Base, Int>, S_57571) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup7S_57571V0B6MemberSiSgs7KeyPathCyAA12S_54310_BaseVSiG_tcipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_57571, @in_guaranteed KeyPath<S_54310_Base, Int>) -> @out Optional<Int>, indices [%$0 : $KeyPath<S_54310_Base, Int> : $KeyPath<S_54310_Base, Int>], indices_equals @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTH : $@convention(keypath_accessor_equals) (@in_guaranteed KeyPath<S_54310_Base, Int>, @in_guaranteed KeyPath<S_54310_Base, Int>) -> Bool, indices_hash @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTh : $@convention(keypath_accessor_hash) (@in_guaranteed KeyPath<S_54310_Base, Int>) -> Int) ([[INNER_KP2]])
|
|
_ = \S_57571.i
|
|
|
|
// CHECK: [[INNER_KP3:%[0-9]+]] = keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; stored_property #S_54310_Base.i : $Optional<Int>; optional_force : $Int)
|
|
// CHECK: keypath $KeyPath<S_57571, Int>, (root $S_57571; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup7S_57571V0B6MemberSiSgs7KeyPathCyAA12S_54310_BaseVSiG_tcig : $@convention(method) (@guaranteed KeyPath<S_54310_Base, Int>, S_57571) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup7S_57571V0B6MemberSiSgs7KeyPathCyAA12S_54310_BaseVSiG_tcipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_57571, @in_guaranteed KeyPath<S_54310_Base, Int>) -> @out Optional<Int>, indices [%$0 : $KeyPath<S_54310_Base, Int> : $KeyPath<S_54310_Base, Int>], indices_equals @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTH : $@convention(keypath_accessor_equals) (@in_guaranteed KeyPath<S_54310_Base, Int>, @in_guaranteed KeyPath<S_54310_Base, Int>) -> Bool, indices_hash @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTh : $@convention(keypath_accessor_hash) (@in_guaranteed KeyPath<S_54310_Base, Int>) -> Int; optional_force : $Int) ([[INNER_KP3]])
|
|
let _: KeyPath<S_57571, Int> = \S_57571.i
|
|
|
|
// CHECK: [[INNER_KP4:%[0-9]+]] = keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicig : $@convention(method) (Int, S_54310_Base) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_54310_Base, @in_guaranteed Int) -> @out Optional<Int>, indices [%$0 : $Int : $Int], indices_equals @$sSiTH : $@convention(keypath_accessor_equals) (@in_guaranteed Int, @in_guaranteed Int) -> Bool, indices_hash @$sSiTh : $@convention(keypath_accessor_hash) (@in_guaranteed Int) -> Int; optional_force : $Int)
|
|
// CHECK: keypath $KeyPath<S_57571, Optional<Int>>, (root $S_57571; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup7S_57571V0B6MemberSiSgs7KeyPathCyAA12S_54310_BaseVSiG_tcig : $@convention(method) (@guaranteed KeyPath<S_54310_Base, Int>, S_57571) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup7S_57571V0B6MemberSiSgs7KeyPathCyAA12S_54310_BaseVSiG_tcipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_57571, @in_guaranteed KeyPath<S_54310_Base, Int>) -> @out Optional<Int>, indices [%$0 : $KeyPath<S_54310_Base, Int> : $KeyPath<S_54310_Base, Int>], indices_equals @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTH : $@convention(keypath_accessor_equals) (@in_guaranteed KeyPath<S_54310_Base, Int>, @in_guaranteed KeyPath<S_54310_Base, Int>) -> Bool, indices_hash @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTh : $@convention(keypath_accessor_hash) (@in_guaranteed KeyPath<S_54310_Base, Int>) -> Int) ([[INNER_KP4]])
|
|
_ = \S_57571.[0]
|
|
|
|
// CHECK: [[INNER_KP5:%[0-9]+]] = keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicig : $@convention(method) (Int, S_54310_Base) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_54310_Base, @in_guaranteed Int) -> @out Optional<Int>, indices [%$0 : $Int : $Int], indices_equals @$sSiTH : $@convention(keypath_accessor_equals) (@in_guaranteed Int, @in_guaranteed Int) -> Bool, indices_hash @$sSiTh : $@convention(keypath_accessor_hash) (@in_guaranteed Int) -> Int; optional_force : $Int)
|
|
// CHECK: keypath $KeyPath<S_57571, Int>, (root $S_57571; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup7S_57571V0B6MemberSiSgs7KeyPathCyAA12S_54310_BaseVSiG_tcig : $@convention(method) (@guaranteed KeyPath<S_54310_Base, Int>, S_57571) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup7S_57571V0B6MemberSiSgs7KeyPathCyAA12S_54310_BaseVSiG_tcipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_57571, @in_guaranteed KeyPath<S_54310_Base, Int>) -> @out Optional<Int>, indices [%$0 : $KeyPath<S_54310_Base, Int> : $KeyPath<S_54310_Base, Int>], indices_equals @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTH : $@convention(keypath_accessor_equals) (@in_guaranteed KeyPath<S_54310_Base, Int>, @in_guaranteed KeyPath<S_54310_Base, Int>) -> Bool, indices_hash @$ss7KeyPathCy29keypath_dynamic_member_lookup12S_54310_BaseVSiGTh : $@convention(keypath_accessor_hash) (@in_guaranteed KeyPath<S_54310_Base, Int>) -> Int; optional_force : $Int) ([[INNER_KP5]])
|
|
let _: KeyPath<S_57571, Int> = \S_57571.[0]
|
|
|
|
// CHECK: [[INNER_KP6:%[0-9]+]] = keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; stored_property #S_54310_Base.i : $Optional<Int>; optional_force : $Int)
|
|
// CHECK: [[YI_OPT:%[0-9]+]] = apply {{%[0-9]+}}([[INNER_KP6]], {{%[0-9]+}}) : $@convention(method) (@guaranteed KeyPath<S_54310_Base, Int>, S_57571) -> Optional<Int>
|
|
// CHECK: switch_enum [[YI_OPT]]
|
|
// CHECK: unreachable
|
|
// CHECK: bb{{[0-9]+}}(%{{[0-9]+}} : $Int)
|
|
let _: Int = y.i
|
|
|
|
// CHECK: [[INNER_KP7:%[0-9]+]] = keypath $KeyPath<S_54310_Base, Int>, (root $S_54310_Base; gettable_property $Optional<Int>, id @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicig : $@convention(method) (Int, S_54310_Base) -> Optional<Int>, getter @$s29keypath_dynamic_member_lookup12S_54310_BaseVySiSgSicipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_54310_Base, @in_guaranteed Int) -> @out Optional<Int>, indices [%$0 : $Int : $Int], indices_equals @$sSiTH : $@convention(keypath_accessor_equals) (@in_guaranteed Int, @in_guaranteed Int) -> Bool, indices_hash @$sSiTh : $@convention(keypath_accessor_hash) (@in_guaranteed Int) -> Int; optional_force : $Int)
|
|
// CHECK: [[Y0_OPT:%[0-9]+]] = apply {{%[0-9]+}}([[INNER_KP7]], {{%[0-9]+}}) : $@convention(method) (@guaranteed KeyPath<S_54310_Base, Int>, S_57571) -> Optional<Int>
|
|
// CHECK: switch_enum [[Y0_OPT]]
|
|
// CHECK: unreachable
|
|
// CHECK: bb{{[0-9]+}}(%{{[0-9]+}} : $Int)
|
|
let _: Int = y[0]
|
|
}
|
|
|
|
// https://github.com/apple/swift/issues/54313
|
|
// Make sure the outer key path reflects the mutability of the
|
|
// 'dynamicMember:' subscript.
|
|
|
|
struct S_54313_Base {
|
|
var mutable: Int
|
|
let immutable: Int
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
struct S_54313_Mutable {
|
|
subscript(dynamicMember kp: KeyPath<S_54313_Base, Int>) -> Int {
|
|
get { 5 } set {}
|
|
}
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
struct S_54313_Immutable {
|
|
subscript(dynamicMember kp: KeyPath<S_54313_Base, Int>) -> Int {
|
|
get { 5 }
|
|
}
|
|
}
|
|
|
|
// CHECK-LABEL: sil hidden @$s29keypath_dynamic_member_lookup21testKeyPathMutabilityyyF : $@convention(thin) () -> ()
|
|
func testKeyPathMutability() {
|
|
// CHECK: keypath $KeyPath<S_54313_Base, Int>, (root $S_54313_Base; stored_property #S_54313_Base.mutable : $Int)
|
|
// CHECK: keypath $WritableKeyPath<S_54313_Mutable, Int>, (root $S_54313_Mutable; settable_property $Int
|
|
_ = \S_54313_Mutable.mutable
|
|
|
|
// CHECK: keypath $KeyPath<S_54313_Base, Int>, (root $S_54313_Base; stored_property #S_54313_Base.immutable : $Int)
|
|
// CHECK: keypath $WritableKeyPath<S_54313_Mutable, Int>, (root $S_54313_Mutable; settable_property $Int
|
|
_ = \S_54313_Mutable.immutable
|
|
|
|
// CHECK: keypath $KeyPath<S_54313_Base, Int>, (root $S_54313_Base; stored_property #S_54313_Base.mutable : $Int)
|
|
// CHECK: keypath $KeyPath<S_54313_Immutable, Int>, (root $S_54313_Immutable; gettable_property $Int
|
|
_ = \S_54313_Immutable.mutable
|
|
|
|
// CHECK: keypath $KeyPath<S_54313_Base, Int>, (root $S_54313_Base; stored_property #S_54313_Base.immutable : $Int)
|
|
// CHECK: keypath $KeyPath<S_54313_Immutable, Int>, (root $S_54313_Immutable; gettable_property $Int
|
|
_ = \S_54313_Immutable.immutable
|
|
}
|
|
|
|
// https://github.com/apple/swift/issues/54352
|
|
// Make sure we properly handle default arguments.
|
|
|
|
struct HasDefaultedSubscript {
|
|
subscript(_ x: Int = 0) -> Int { x }
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
struct S_54352 {
|
|
subscript(dynamicMember kp: KeyPath<HasDefaultedSubscript, Int>) -> Int { 0 }
|
|
}
|
|
|
|
// CHECK-LABEL: sil hidden @$s29keypath_dynamic_member_lookup28testDynamicMemberWithDefaultyyAA7S_54352VF : $@convention(thin) (S_54352) -> ()
|
|
func testDynamicMemberWithDefault(_ x: S_54352) {
|
|
// CHECK: [[DEF_FN:%[0-9]+]] = function_ref @$s29keypath_dynamic_member_lookup21HasDefaultedSubscriptVyS2icipfA_ : $@convention(thin) () -> Int
|
|
// CHECK: [[DEF_ARG:%[0-9]+]] = apply [[DEF_FN]]()
|
|
// CHECK: [[KP:%[0-9]+]] = keypath $KeyPath<HasDefaultedSubscript, Int>, (root $HasDefaultedSubscript; gettable_property $Int, id @$s29keypath_dynamic_member_lookup21HasDefaultedSubscriptVyS2icig : $@convention(method) (Int, HasDefaultedSubscript) -> Int, getter @$s29keypath_dynamic_member_lookup21HasDefaultedSubscriptVyS2icipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed HasDefaultedSubscript, @in_guaranteed Int) -> @out Int, indices [%$0 : $Int : $Int], indices_equals @$sSiTH : $@convention(keypath_accessor_equals) (@in_guaranteed Int, @in_guaranteed Int) -> Bool, indices_hash @$sSiTh : $@convention(keypath_accessor_hash) (@in_guaranteed Int) -> Int) ([[DEF_ARG]])
|
|
// CHECK: [[SUB_GET:%[0-9]+]] = function_ref @$s29keypath_dynamic_member_lookup7S_54352V0B6MemberSis7KeyPathCyAA21HasDefaultedSubscriptVSiG_tcig : $@convention(method) (@guaranteed KeyPath<HasDefaultedSubscript, Int>, S_54352) -> Int
|
|
// CHECK: apply [[SUB_GET]]([[KP]], {{%[0-9]+}})
|
|
_ = x[]
|
|
|
|
// CHECK: [[DEF_FN:%[0-9]+]] = function_ref @$s29keypath_dynamic_member_lookup21HasDefaultedSubscriptVyS2icipfA_ : $@convention(thin) () -> Int
|
|
// CHECK: [[DEF_ARG:%[0-9]+]] = apply [[DEF_FN]]()
|
|
// CHECK: [[INNER_KP:%[0-9]+]] = keypath $KeyPath<HasDefaultedSubscript, Int>, (root $HasDefaultedSubscript; gettable_property $Int, id @$s29keypath_dynamic_member_lookup21HasDefaultedSubscriptVyS2icig : $@convention(method) (Int, HasDefaultedSubscript) -> Int, getter @$s29keypath_dynamic_member_lookup21HasDefaultedSubscriptVyS2icipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed HasDefaultedSubscript, @in_guaranteed Int) -> @out Int, indices [%$0 : $Int : $Int], indices_equals @$sSiTH : $@convention(keypath_accessor_equals) (@in_guaranteed Int, @in_guaranteed Int) -> Bool, indices_hash @$sSiTh : $@convention(keypath_accessor_hash) (@in_guaranteed Int) -> Int) ([[DEF_ARG]])
|
|
// CHECK: [[OUTER_KP:%[0-9]+]] = keypath $KeyPath<S_54352, Int>, (root $S_54352; gettable_property $Int, id @$s29keypath_dynamic_member_lookup7S_54352V0B6MemberSis7KeyPathCyAA21HasDefaultedSubscriptVSiG_tcig : $@convention(method) (@guaranteed KeyPath<HasDefaultedSubscript, Int>, S_54352) -> Int, getter @$s29keypath_dynamic_member_lookup7S_54352V0B6MemberSis7KeyPathCyAA21HasDefaultedSubscriptVSiG_tcipACTK : $@convention(keypath_accessor_getter) (@in_guaranteed S_54352, @in_guaranteed KeyPath<HasDefaultedSubscript, Int>) -> @out Int, indices [%$0 : $KeyPath<HasDefaultedSubscript, Int> : $KeyPath<HasDefaultedSubscript, Int>], indices_equals @$ss7KeyPathCy29keypath_dynamic_member_lookup21HasDefaultedSubscriptVSiGTH : $@convention(keypath_accessor_equals) (@in_guaranteed KeyPath<HasDefaultedSubscript, Int>, @in_guaranteed KeyPath<HasDefaultedSubscript, Int>) -> Bool, indices_hash @$ss7KeyPathCy29keypath_dynamic_member_lookup21HasDefaultedSubscriptVSiGTh : $@convention(keypath_accessor_hash) (@in_guaranteed KeyPath<HasDefaultedSubscript, Int>) -> Int) ([[INNER_KP]])
|
|
_ = \S_54352.[]
|
|
}
|
|
|
|
// https://github.com/apple/swift/issues/54150
|
|
// Key path dynamic member lookup crash
|
|
|
|
@dynamicMemberLookup
|
|
protocol P_54150 {
|
|
subscript(dynamicMember member: KeyPath<Self, Any>) -> Any { get }
|
|
}
|
|
|
|
extension P_54150 {
|
|
subscript(dynamicMember member: KeyPath<Self, Any>) -> Any {
|
|
self[keyPath: member] // Ok
|
|
// CHECK: function_ref @swift_getAtKeyPath
|
|
// CHECK-NEXT: apply %{{.*}}<Self, Any>({{.*}})
|
|
}
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
struct S_54150 {
|
|
let value: Int
|
|
|
|
subscript<T>(dynamicMember member: KeyPath<Self, T>) -> T {
|
|
return self[keyPath: member]
|
|
// CHECK: function_ref @swift_getAtKeyPath
|
|
// CHECK-NEXT: apply %{{.*}}<S_54150, T>({{.*}})
|
|
}
|
|
}
|
|
|
|
// https://github.com/swiftlang/swift/issues/56837
|
|
@dynamicMemberLookup
|
|
struct Issue56837<Value, Integer: FixedWidthInteger> {
|
|
var value: Value
|
|
init(_ value: Value) {
|
|
self.value = value
|
|
}
|
|
subscript<T>(dynamicMember keyPath: KeyPath<Value, T>) -> T {
|
|
get { return self.value[keyPath: keyPath] }
|
|
}
|
|
subscript(type value: Integer) -> Bool {
|
|
get { return true }
|
|
}
|
|
}
|
|
struct TestIssue56837 {
|
|
typealias T1 = Issue56837<String, Int8>
|
|
typealias T2 = Issue56837<T1, Int16>
|
|
typealias T3 = Issue56837<T2, Int32>
|
|
typealias T4 = Issue56837<T3, Int64>
|
|
static func test() {
|
|
let value: T4 = .init(.init(.init(.init("Swift"))))
|
|
_ = value[type: Int64.max]
|
|
_ = value[type: Int32.max]
|
|
_ = value[type: Int16.max]
|
|
_ = value[type: Int8.max]
|
|
}
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
class TestDynamicSelf {
|
|
struct S {
|
|
subscript() -> Int { 0 }
|
|
}
|
|
func foo() -> Self {
|
|
// Make sure we can do dynamic member lookup on a dynamic self.
|
|
_ = self[]
|
|
return self
|
|
}
|
|
subscript<T>(dynamicMember dynamicMember: KeyPath<S, T>) -> T {
|
|
fatalError()
|
|
}
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
protocol P1 {}
|
|
|
|
extension P1 {
|
|
subscript<T>(dynamicMember dynamicMemberLookup: KeyPath<TestOverloaded.S2, T>) -> T {
|
|
fatalError()
|
|
}
|
|
}
|
|
|
|
struct TestOverloaded {
|
|
struct S1: P1 {
|
|
subscript(x: String) -> Int {
|
|
fatalError()
|
|
}
|
|
func f(_ x: String) -> Int {
|
|
return self[x]
|
|
}
|
|
}
|
|
struct S2: P1 {}
|
|
}
|
|
|
|
@dynamicMemberLookup
|
|
struct SingleLens<T> {
|
|
var value: T
|
|
init(_ value: T) {
|
|
self.value = value
|
|
}
|
|
subscript<U>(dynamicMember keyPath: KeyPath<T, U>) -> U {
|
|
value[keyPath: keyPath]
|
|
}
|
|
}
|
|
|
|
func testRecursiveSingleSubscript(_ x: SingleLens<SingleLens<SingleLens<SingleLens<[Int]>>>>) {
|
|
_ = x[0]
|
|
}
|