mirror of
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synced 2025-12-14 20:36:38 +01:00
894a1e50bf
This commit adds `ConstraintSystem::getCalleeLocator`, which forms a locator that describes the callee of a given expression. This function is then used to replace various places where this logic is duplicated. This commit also changes the conditions under which a ConstructorMember callee locator is formed. Previously it was formed for a CallExpr with a TypeExpr function expr. However, now such a locator is formed if the function expr is of AnyMetatypeType. This allows it to be more lenient with invalid code, as well as work with DotSelfExpr. Resolves SR-10694.
710 lines
28 KiB
Swift
710 lines
28 KiB
Swift
// RUN: %target-typecheck-verify-swift -enable-objc-interop
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infix operator +++
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protocol ConcatToAnything {
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static func +++ <T>(lhs: Self, other: T)
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}
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func min<T : Comparable>(_ x: T, y: T) -> T {
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if y < x { return y }
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return x
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}
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func weirdConcat<T : ConcatToAnything, U>(_ t: T, u: U) {
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t +++ u
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t +++ 1
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u +++ t // expected-error{{argument type 'U' does not conform to expected type 'ConcatToAnything'}}
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}
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// Make sure that the protocol operators don't get in the way.
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var b1, b2 : Bool
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_ = b1 != b2
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extension UnicodeScalar {
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func isAlpha2() -> Bool {
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return (self >= "A" && self <= "Z") || (self >= "a" && self <= "z")
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}
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}
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protocol P {
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static func foo(_ arg: Self) -> Self
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}
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struct S : P {
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static func foo(_ arg: S) -> S {
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return arg
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}
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}
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func foo<T : P>(_ arg: T) -> T {
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return T.foo(arg)
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}
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// Associated types and metatypes
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protocol SomeProtocol {
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associatedtype SomeAssociated
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}
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func generic_metatypes<T : SomeProtocol>(_ x: T)
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-> (T.Type, T.SomeAssociated.Type)
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{
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return (type(of: x), type(of: x).SomeAssociated.self)
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}
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// Inferring a variable's type from a call to a generic.
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struct Pair<T, U> { } // expected-note 3 {{'T' declared as parameter to type 'Pair'}} expected-note 2 {{'U' declared as parameter to type 'Pair'}}
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func pair<T, U>(_ x: T, _ y: U) -> Pair<T, U> { }
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var i : Int, f : Float
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var p = pair(i, f)
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// Conformance constraints on static variables.
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func f1<S1 : Sequence>(_ s1: S1) {}
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var x : Array<Int> = [1]
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f1(x)
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// Inheritance involving generics and non-generics.
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class X {
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func f() {}
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}
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class Foo<T> : X {
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func g() { }
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}
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class Y<U> : Foo<Int> {
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}
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func genericAndNongenericBases(_ x: Foo<Int>, y: Y<()>) {
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x.f()
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y.f()
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y.g()
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}
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func genericAndNongenericBasesTypeParameter<T : Y<()>>(_ t: T) {
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t.f()
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t.g()
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}
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protocol P1 {}
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protocol P2 {}
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func foo<T : P1>(_ t: T) -> P2 {
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return t // expected-error{{return expression of type 'T' does not conform to 'P2'}}
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}
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func foo2(_ p1: P1) -> P2 {
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return p1 // expected-error{{return expression of type 'P1' does not conform to 'P2'}}
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}
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// <rdar://problem/14005696>
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protocol BinaryMethodWorkaround {
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associatedtype MySelf
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}
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protocol Squigglable : BinaryMethodWorkaround {
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}
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infix operator ~~~
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func ~~~ <T : Squigglable>(lhs: T, rhs: T) -> Bool where T.MySelf == T {
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return true
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}
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extension UInt8 : Squigglable {
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typealias MySelf = UInt8
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}
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var rdar14005696 : UInt8
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_ = rdar14005696 ~~~ 5
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// <rdar://problem/15168483>
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public struct SomeIterator<C: Collection, Indices: Sequence>
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: IteratorProtocol, Sequence
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where C.Index == Indices.Iterator.Element {
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var seq : C
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var indices : Indices.Iterator
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public typealias Element = C.Iterator.Element
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public mutating func next() -> Element? {
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fatalError()
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}
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public init(elements: C, indices: Indices) {
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fatalError()
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}
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}
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func f1<T>(seq: Array<T>) {
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let x = (seq.indices).lazy.reversed()
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SomeIterator(elements: seq, indices: x) // expected-warning{{unused}}
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SomeIterator(elements: seq, indices: seq.indices.reversed()) // expected-warning{{unused}}
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}
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// <rdar://problem/16078944>
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func count16078944<T>(_ x: Range<T>) -> Int { return 0 }
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func test16078944 <T: Comparable>(lhs: T, args: T) -> Int {
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return count16078944(lhs..<args) // don't crash
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}
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// <rdar://problem/22409190> QoI: Passing unsigned integer to ManagedBuffer elements.destroy()
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class r22409190ManagedBuffer<Value, Element> {
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final var value: Value { get {} set {}}
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func withUnsafeMutablePointerToElements<R>(
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_ body: (UnsafeMutablePointer<Element>) -> R) -> R {
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}
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}
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class MyArrayBuffer<Element>: r22409190ManagedBuffer<UInt, Element> {
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deinit {
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self.withUnsafeMutablePointerToElements { elems -> Void in
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elems.deinitialize(count: self.value) // expected-error {{cannot convert value of type 'UInt' to expected argument type 'Int'}}
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}
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}
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}
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// <rdar://problem/22459135> error: 'print' is unavailable: Please wrap your tuple argument in parentheses: 'print((...))'
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func r22459135() {
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func h<S : Sequence>(_ sequence: S) -> S.Iterator.Element
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where S.Iterator.Element : FixedWidthInteger {
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return 0
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}
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func g(_ x: Any) {}
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func f(_ x: Int) {
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g(h([3]))
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}
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func f2<TargetType: AnyObject>(_ target: TargetType, handler: @escaping (TargetType) -> ()) {
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let _: (AnyObject) -> () = { internalTarget in
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handler(internalTarget as! TargetType)
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}
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}
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}
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// <rdar://problem/19710848> QoI: Friendlier error message for "[] as Set"
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// <rdar://problem/22326930> QoI: "argument for generic parameter 'Element' could not be inferred" lacks context
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_ = [] as Set // expected-error {{protocol type 'Any' cannot conform to 'Hashable' because only concrete types can conform to protocols}}
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//<rdar://problem/22509125> QoI: Error when unable to infer generic archetype lacks greatness
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func r22509125<T>(_ a : T?) { // expected-note {{in call to function 'r22509125'}}
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r22509125(nil) // expected-error {{generic parameter 'T' could not be inferred}}
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}
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// <rdar://problem/24267414> QoI: error: cannot convert value of type 'Int' to specified type 'Int'
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struct R24267414<T> { // expected-note {{'T' declared as parameter to type 'R24267414'}}
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static func foo() -> Int {}
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}
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var _ : Int = R24267414.foo() // expected-error {{generic parameter 'T' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{24-24=<Any>}}
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// https://bugs.swift.org/browse/SR-599
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func SR599<T: FixedWidthInteger>() -> T.Type { return T.self } // expected-note {{in call to function 'SR599()'}}
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_ = SR599() // expected-error {{generic parameter 'T' could not be inferred}}
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// <rdar://problem/19215114> QoI: Poor diagnostic when we are unable to infer type
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protocol Q19215114 {}
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protocol P19215114 {}
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// expected-note @+1 {{in call to function 'body9215114'}}
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func body9215114<T: P19215114, U: Q19215114>(_ t: T) -> (_ u: U) -> () {}
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func test9215114<T: P19215114, U: Q19215114>(_ t: T) -> (U) -> () {
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//Should complain about not being able to infer type of U.
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let f = body9215114(t) // expected-error {{generic parameter 'T' could not be inferred}}
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return f
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}
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// <rdar://problem/21718970> QoI: [uninferred generic param] cannot invoke 'foo' with an argument list of type '(Int)'
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class Whatever<A: Numeric, B: Numeric> { // expected-note 2 {{'A' declared as parameter to type 'Whatever'}}
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static func foo(a: B) {}
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static func bar() {}
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}
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Whatever.foo(a: 23) // expected-error {{generic parameter 'A' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{9-9=<<#A: Numeric#>, <#B: Numeric#>>}}
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// <rdar://problem/21718955> Swift useless error: cannot invoke 'foo' with no arguments
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Whatever.bar() // expected-error {{generic parameter 'A' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{9-9=<<#A: Numeric#>, <#B: Numeric#>>}}
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// <rdar://problem/27515965> Type checker doesn't enforce same-type constraint if associated type is Any
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protocol P27515965 {
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associatedtype R
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func f() -> R
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}
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struct S27515965 : P27515965 {
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func f() -> Any { return self }
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}
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struct V27515965 {
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init<T : P27515965>(_ tp: T) where T.R == Float {}
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// expected-note@-1 {{where 'T.R' = 'Any'}}
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}
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func test(x: S27515965) -> V27515965 {
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return V27515965(x)
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// expected-error@-1 {{initializer 'init(_:)' requires the types 'Any' and 'Float' be equivalent}}
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}
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protocol BaseProto {}
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protocol SubProto: BaseProto {}
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@objc protocol NSCopyish {
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func copy() -> Any
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}
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struct FullyGeneric<Foo> {} // expected-note 11 {{'Foo' declared as parameter to type 'FullyGeneric'}} expected-note 1 {{generic type 'FullyGeneric' declared here}}
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struct AnyClassBound<Foo: AnyObject> {} // expected-note {{'Foo' declared as parameter to type 'AnyClassBound'}} expected-note {{generic type 'AnyClassBound' declared here}}
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// expected-note@-1{{requirement specified as 'Foo' : 'AnyObject'}}
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struct AnyClassBound2<Foo> where Foo: AnyObject {} // expected-note {{'Foo' declared as parameter to type 'AnyClassBound2'}}
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// expected-note@-1{{requirement specified as 'Foo' : 'AnyObject' [with Foo = Any]}}
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struct ProtoBound<Foo: SubProto> {} // expected-note {{'Foo' declared as parameter to type 'ProtoBound'}} expected-note {{generic type 'ProtoBound' declared here}}
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struct ProtoBound2<Foo> where Foo: SubProto {} // expected-note {{'Foo' declared as parameter to type 'ProtoBound2'}}
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struct ObjCProtoBound<Foo: NSCopyish> {} // expected-note {{'Foo' declared as parameter to type 'ObjCProtoBound'}} expected-note {{generic type 'ObjCProtoBound' declared here}}
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struct ObjCProtoBound2<Foo> where Foo: NSCopyish {} // expected-note {{'Foo' declared as parameter to type 'ObjCProtoBound2'}}
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struct ClassBound<Foo: X> {} // expected-note {{generic type 'ClassBound' declared here}}
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struct ClassBound2<Foo> where Foo: X {} // expected-note {{generic type 'ClassBound2' declared here}}
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struct ProtosBound<Foo> where Foo: SubProto & NSCopyish {} // expected-note {{'Foo' declared as parameter to type 'ProtosBound'}} expected-note {{generic type 'ProtosBound' declared here}}
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struct ProtosBound2<Foo: SubProto & NSCopyish> {} // expected-note {{'Foo' declared as parameter to type 'ProtosBound2'}}
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struct ProtosBound3<Foo: SubProto> where Foo: NSCopyish {} // expected-note {{'Foo' declared as parameter to type 'ProtosBound3'}}
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struct AnyClassAndProtoBound<Foo> where Foo: AnyObject, Foo: SubProto {} // expected-note {{'Foo' declared as parameter to type 'AnyClassAndProtoBound'}}
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struct AnyClassAndProtoBound2<Foo> where Foo: SubProto, Foo: AnyObject {} // expected-note {{'Foo' declared as parameter to type 'AnyClassAndProtoBound2'}}
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struct ClassAndProtoBound<Foo> where Foo: X, Foo: SubProto {} // expected-note {{where 'Foo' = 'X'}}
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struct ClassAndProtosBound<Foo> where Foo: X, Foo: SubProto, Foo: NSCopyish {} // expected-note 2 {{where 'Foo' = 'X'}}
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struct ClassAndProtosBound2<Foo> where Foo: X, Foo: SubProto & NSCopyish {} // expected-note 2 {{where 'Foo' = 'X'}}
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extension Pair {
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init(first: T) {}
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init(second: U) {}
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var first: T { fatalError() }
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var second: U { fatalError() }
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}
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func testFixIts() {
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_ = FullyGeneric() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{19-19=<Any>}}
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_ = FullyGeneric<Any>()
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_ = AnyClassBound() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{20-20=<AnyObject>}}
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_ = AnyClassBound<Any>() // expected-error {{'AnyClassBound' requires that 'Any' be a class type}}
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_ = AnyClassBound<AnyObject>()
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_ = AnyClassBound2() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{21-21=<AnyObject>}}
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_ = AnyClassBound2<Any>() // expected-error {{'AnyClassBound2' requires that 'Any' be a class type}}
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_ = AnyClassBound2<AnyObject>()
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_ = ProtoBound() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{17-17=<<#Foo: SubProto#>>}}
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_ = ProtoBound<Any>() // expected-error {{type 'Any' does not conform to protocol 'SubProto'}}
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_ = ProtoBound2() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{18-18=<<#Foo: SubProto#>>}}
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_ = ProtoBound2<Any>() // expected-error {{type 'Any' does not conform to protocol 'SubProto'}}
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_ = ObjCProtoBound() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{21-21=<NSCopyish>}}
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_ = ObjCProtoBound<AnyObject>() // expected-error {{type 'AnyObject' does not conform to protocol 'NSCopyish'}}
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_ = ObjCProtoBound<NSCopyish>()
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_ = ObjCProtoBound2() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{22-22=<NSCopyish>}}
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_ = ObjCProtoBound2<AnyObject>() // expected-error {{type 'AnyObject' does not conform to protocol 'NSCopyish'}}
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_ = ObjCProtoBound2<NSCopyish>()
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_ = ProtosBound() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{18-18=<<#Foo: NSCopyish & SubProto#>>}}
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_ = ProtosBound2() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{19-19=<<#Foo: NSCopyish & SubProto#>>}}
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_ = ProtosBound3() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{19-19=<<#Foo: NSCopyish & SubProto#>>}}
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_ = AnyClassAndProtoBound() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{28-28=<<#Foo: SubProto & AnyObject#>>}}
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_ = AnyClassAndProtoBound2() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{29-29=<<#Foo: SubProto & AnyObject#>>}}
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_ = ClassAndProtoBound() // expected-error {{referencing initializer 'init()' on 'ClassAndProtoBound' requires that 'X' conform to 'SubProto'}}
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_ = ClassAndProtosBound()
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// expected-error@-1 {{referencing initializer 'init()' on 'ClassAndProtosBound' requires that 'X' conform to 'NSCopyish'}}
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// expected-error@-2 {{referencing initializer 'init()' on 'ClassAndProtosBound' requires that 'X' conform to 'SubProto'}}
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_ = ClassAndProtosBound2()
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// expected-error@-1 {{referencing initializer 'init()' on 'ClassAndProtosBound2' requires that 'X' conform to 'NSCopyish'}}
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// expected-error@-2 {{referencing initializer 'init()' on 'ClassAndProtosBound2' requires that 'X' conform to 'SubProto'}}
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_ = Pair() // expected-error {{generic parameter 'T' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{11-11=<Any, Any>}}
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_ = Pair(first: S()) // expected-error {{generic parameter 'U' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{11-11=<S, Any>}}
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_ = Pair(second: S()) // expected-error {{generic parameter 'T' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{11-11=<Any, S>}}
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}
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func testFixItClassBound() {
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// We infer a single class bound for simple cases in expressions...
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let x = ClassBound()
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let x1: String = x // expected-error {{cannot convert value of type 'ClassBound<X>' to specified type 'String'}}
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let y = ClassBound2()
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let y1: String = y // expected-error {{cannot convert value of type 'ClassBound2<X>' to specified type 'String'}}
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// ...but not in types.
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let z1: ClassBound // expected-error {{reference to generic type 'ClassBound' requires arguments in <...>}} {{21-21=<X>}}
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let z2: ClassBound2 // expected-error {{reference to generic type 'ClassBound2' requires arguments in <...>}} {{22-22=<X>}}
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}
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func testFixItCasting(x: Any) {
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_ = x as! FullyGeneric // expected-error {{generic parameter 'Foo' could not be inferred in cast to 'FullyGeneric<_>'}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{25-25=<Any>}}
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}
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func testFixItContextualKnowledge() {
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// FIXME: These could propagate backwards.
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let _: Int = Pair().first // expected-error {{generic parameter 'U' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{20-20=<Any, Any>}}
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let _: Int = Pair().second // expected-error {{generic parameter 'T' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{20-20=<Any, Any>}}
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}
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func testFixItTypePosition() {
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let _: FullyGeneric // expected-error {{reference to generic type 'FullyGeneric' requires arguments in <...>}} {{22-22=<Any>}}
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let _: ProtoBound // expected-error {{reference to generic type 'ProtoBound' requires arguments in <...>}} {{20-20=<<#Foo: SubProto#>>}}
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let _: ObjCProtoBound // expected-error {{reference to generic type 'ObjCProtoBound' requires arguments in <...>}} {{24-24=<NSCopyish>}}
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let _: AnyClassBound // expected-error {{reference to generic type 'AnyClassBound' requires arguments in <...>}} {{23-23=<AnyObject>}}
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let _: ProtosBound // expected-error {{reference to generic type 'ProtosBound' requires arguments in <...>}} {{21-21=<<#Foo: NSCopyish & SubProto#>>}}
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}
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func testFixItNested() {
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_ = Array<FullyGeneric>() // expected-error {{generic parameter 'Foo' could not be inferred}}
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// expected-note@-1 {{explicitly specify the generic arguments to fix this issue}} {{25-25=<Any>}}
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_ = [FullyGeneric]() // expected-error {{generic parameter 'Foo' could not be inferred}} expected-note {{explicitly specify the generic arguments to fix this issue}} {{20-20=<Any>}}
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_ = FullyGeneric<FullyGeneric>() // expected-error {{generic parameter 'Foo' could not be inferred}}
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_ = Pair< // expected-error {{generic parameter 'Foo' could not be inferred}}
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FullyGeneric,
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// expected-note@-1 {{explicitly specify the generic arguments to fix this issue}} {{17-17=<Any>}}
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FullyGeneric // FIXME: We could diagnose both of these, but we don't.
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>()
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_ = Pair< // expected-error {{generic parameter 'Foo' could not be inferred}}
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FullyGeneric<Any>,
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|
FullyGeneric
|
|
>()
|
|
_ = Pair< // expected-error {{generic parameter 'Foo' could not be inferred}}
|
|
FullyGeneric,
|
|
// expected-note@-1 {{explicitly specify the generic arguments to fix this issue}} {{17-17=<Any>}}
|
|
FullyGeneric<Any>
|
|
>()
|
|
|
|
_ = pair( // expected-error {{generic parameter 'Foo' could not be inferred}} {{none}}
|
|
FullyGeneric(), // expected-note {{explicitly specify the generic arguments to fix this issue}}
|
|
FullyGeneric()
|
|
)
|
|
_ = pair( // expected-error {{generic parameter 'Foo' could not be inferred}} {{none}}
|
|
FullyGeneric<Any>(),
|
|
FullyGeneric() // expected-note {{explicitly specify the generic arguments to fix this issue}}
|
|
)
|
|
_ = pair( // expected-error {{generic parameter 'Foo' could not be inferred}} {{none}}
|
|
FullyGeneric(), // expected-note {{explicitly specify the generic arguments to fix this issue}}
|
|
FullyGeneric<Any>()
|
|
)
|
|
}
|
|
|
|
// rdar://problem/26845038
|
|
func occursCheck26845038(a: [Int]) {
|
|
_ = Array(a)[0]
|
|
}
|
|
|
|
// rdar://problem/29633747
|
|
extension Array where Element: Hashable {
|
|
public func trimmed(_ elements: [Element]) -> SubSequence {
|
|
return []
|
|
}
|
|
}
|
|
|
|
func rdar29633747(characters: String) {
|
|
let _ = Array(characters).trimmed(["("])
|
|
}
|
|
|
|
// Null pointer dereference in noteArchetypeSource()
|
|
class GenericClass<A> {}
|
|
// expected-note@-1 {{'A' declared as parameter to type 'GenericClass'}}
|
|
|
|
func genericFunc<T>(t: T) {
|
|
_ = [T: GenericClass] // expected-error {{generic parameter 'A' could not be inferred}}
|
|
// expected-note@-1 {{explicitly specify the generic arguments to fix this issue}}
|
|
// expected-error@-2 3 {{type 'T' does not conform to protocol 'Hashable'}}
|
|
}
|
|
|
|
struct SR_3525<T> {}
|
|
func sr3525_arg_int(_: inout SR_3525<Int>) {}
|
|
func sr3525_arg_gen<T>(_: inout SR_3525<T>) {}
|
|
func sr3525_1(t: SR_3525<Int>) {
|
|
let _ = sr3525_arg_int(&t) // expected-error {{cannot pass immutable value as inout argument: 't' is a 'let' constant}}
|
|
}
|
|
func sr3525_2(t: SR_3525<Int>) {
|
|
let _ = sr3525_arg_gen(&t) // expected-error {{cannot pass immutable value as inout argument: 't' is a 'let' constant}}
|
|
}
|
|
func sr3525_3<T>(t: SR_3525<T>) {
|
|
let _ = sr3525_arg_gen(&t) // expected-error {{cannot pass immutable value as inout argument: 't' is a 'let' constant}}
|
|
}
|
|
|
|
class testStdlibType {
|
|
let _: Array // expected-error {{reference to generic type 'Array' requires arguments in <...>}} {{15-15=<Any>}}
|
|
}
|
|
|
|
// rdar://problem/32697033
|
|
protocol P3 {
|
|
associatedtype InnerAssoc
|
|
}
|
|
|
|
protocol P4 {
|
|
associatedtype OuterAssoc: P3
|
|
}
|
|
|
|
struct S3 : P3 {
|
|
typealias InnerAssoc = S4
|
|
}
|
|
|
|
struct S4: P4 {
|
|
typealias OuterAssoc = S3
|
|
}
|
|
|
|
public struct S5 {
|
|
func f<Model: P4, MO> (models: [Model])
|
|
where Model.OuterAssoc == MO, MO.InnerAssoc == Model {
|
|
}
|
|
|
|
func g<MO, Model: P4> (models: [Model])
|
|
where Model.OuterAssoc == MO, MO.InnerAssoc == Model {
|
|
}
|
|
|
|
func f(arr: [S4]) {
|
|
f(models: arr)
|
|
g(models: arr)
|
|
}
|
|
}
|
|
|
|
// rdar://problem/24329052 - QoI: call argument archetypes not lining up leads to ambiguity errors
|
|
|
|
struct S_24329052<T> { // expected-note {{generic parameter 'T' of generic struct 'S_24329052' declared here}}
|
|
var foo: (T) -> Void
|
|
// expected-note@+1 {{generic parameter 'T' of instance method 'bar(_:)' declared here}}
|
|
func bar<T>(_ v: T) { foo(v) }
|
|
// expected-error@-1 {{cannot convert value of type 'T' (generic parameter of instance method 'bar(_:)') to expected argument type 'T' (generic parameter of generic struct 'S_24329052')}}
|
|
}
|
|
|
|
extension Sequence {
|
|
var rdar24329052: (Element) -> Void { fatalError() }
|
|
// expected-note@+1 {{generic parameter 'Element' of instance method 'foo24329052(_:)' declared here}}
|
|
func foo24329052<Element>(_ v: Element) { rdar24329052(v) }
|
|
// expected-error@-1 {{cannot convert value of type 'Element' (generic parameter of instance method 'foo24329052(_:)') to expected argument type 'Self.Element' (associated type of protocol 'Sequence')}}
|
|
}
|
|
|
|
func rdar27700622<E: Comparable>(_ input: [E]) -> [E] {
|
|
let pivot = input.first!
|
|
let lhs = input.dropFirst().filter { $0 <= pivot }
|
|
let rhs = input.dropFirst().filter { $0 > pivot }
|
|
|
|
return rdar27700622(lhs) + [pivot] + rdar27700622(rhs) // Ok
|
|
}
|
|
|
|
// rdar://problem/22898292 - Type inference failure with constrained subclass
|
|
protocol P_22898292 {}
|
|
|
|
do {
|
|
func construct_generic<T: P_22898292>(_ construct: () -> T) -> T { return construct() }
|
|
|
|
class A {}
|
|
class B : A, P_22898292 {}
|
|
|
|
func foo() -> B { return B() }
|
|
func bar(_ value: A) {}
|
|
func baz<T: A>(_ value: T) {}
|
|
|
|
func rdar_22898292_1() {
|
|
let x = construct_generic { foo() } // returns A
|
|
bar(x) // Ok
|
|
bar(construct_generic { foo() }) // Ok
|
|
}
|
|
|
|
func rdar22898292_2<T: B>(_ d: T) {
|
|
_ = { baz($0) }(construct_generic { d }) // Ok
|
|
}
|
|
}
|
|
|
|
// rdar://problem/35541153 - Generic parameter inference bug
|
|
|
|
func rdar35541153() {
|
|
func foo<U: Equatable, V: Equatable, C: Collection>(_ c: C) where C.Element == (U, V) {}
|
|
func bar<K: Equatable, V, C: Collection>(_ c: C, _ k: K, _ v: V) where C.Element == (K, V) {}
|
|
|
|
let x: [(a: Int, b: Int)] = []
|
|
let y: [(k: String, v: Int)] = []
|
|
|
|
foo(x) // Ok
|
|
bar(y, "ultimate question", 42) // Ok
|
|
}
|
|
|
|
// rdar://problem/38159133 - [SR-7125]: Swift 4.1 Xcode 9.3b4 regression
|
|
|
|
protocol P_38159133 {}
|
|
|
|
do {
|
|
class Super {}
|
|
class A: Super, P_38159133 {}
|
|
class B: Super, P_38159133 {}
|
|
|
|
func rdar38159133(_ a: A?, _ b: B?) {
|
|
let _: [P_38159133] = [a, b].compactMap { $0 } // Ok
|
|
}
|
|
}
|
|
|
|
func rdar35890334(_ arr: inout [Int]) {
|
|
_ = arr.popFirst() // expected-error {{referencing instance method 'popFirst()' on 'Collection' requires the types '[Int]' and 'ArraySlice<Int>' be equivalent}}
|
|
}
|
|
|
|
// rdar://problem/39616039
|
|
|
|
func rdar39616039() {
|
|
func foo<V>(default: V, _ values: [String: V]) -> V {
|
|
return values["foo"] ?? `default`
|
|
}
|
|
|
|
var a = foo(default: 42, ["foo": 0])
|
|
a += 1 // ok
|
|
|
|
var b = foo(default: 42.0, ["foo": 0])
|
|
b += 1 // ok
|
|
|
|
var c = foo(default: 42.0, ["foo": Float(0)])
|
|
c += 1 // ok
|
|
}
|
|
|
|
// https://bugs.swift.org/browse/SR-8075
|
|
|
|
func sr8075() {
|
|
struct UIFont {
|
|
init(ofSize: Float) {}
|
|
}
|
|
|
|
func switchOnCategory<T>(_ categoryToValue: [Int: T]) -> T {
|
|
fatalError()
|
|
}
|
|
|
|
let _: UIFont = .init(ofSize: switchOnCategory([0: 15.5, 1: 20.5]))
|
|
}
|
|
|
|
// rdar://problem/40537858 - Ambiguous diagnostic when type is missing conformance
|
|
func rdar40537858() {
|
|
struct S {
|
|
struct Id {}
|
|
var id: Id
|
|
}
|
|
|
|
struct List<T: Collection, E: Hashable> { // expected-note {{where 'E' = 'S.Id'}}
|
|
typealias Data = T.Element
|
|
init(_: T, id: KeyPath<Data, E>) {}
|
|
}
|
|
|
|
var arr: [S] = []
|
|
_ = List(arr, id: \.id) // expected-error {{referencing initializer 'init(_:id:)' on 'List' requires that 'S.Id' conform to 'Hashable'}}
|
|
|
|
enum E<T: P> { // expected-note 2 {{where 'T' = 'S'}}
|
|
case foo(T)
|
|
case bar([T])
|
|
}
|
|
|
|
var s = S(id: S.Id())
|
|
let _: E = .foo(s) // expected-error {{enum case 'foo' requires that 'S' conform to 'P'}}
|
|
let _: E = .bar([s]) // expected-error {{enum case 'bar' requires that 'S' conform to 'P'}}
|
|
}
|
|
|
|
// https://bugs.swift.org/browse/SR-8934
|
|
struct BottleLayout {
|
|
let count : Int
|
|
}
|
|
let arr = [BottleLayout]()
|
|
let layout = BottleLayout(count:1)
|
|
let ix = arr.firstIndex(of:layout) // expected-error {{argument type 'BottleLayout' does not conform to expected type 'Equatable'}}
|
|
|
|
let _: () -> UInt8 = { .init("a" as Unicode.Scalar) } // expected-error {{initializer 'init(_:)' requires that 'Unicode.Scalar' conform to 'BinaryInteger'}}
|
|
|
|
// https://bugs.swift.org/browse/SR-9068
|
|
func compare<C: Collection, Key: Hashable, Value: Equatable>(c: C)
|
|
-> Bool where C.Element == (key: Key, value: Value)
|
|
{
|
|
_ = Dictionary(uniqueKeysWithValues: Array(c))
|
|
}
|
|
|
|
// https://bugs.swift.org/browse/SR-7984
|
|
struct SR_7984<Bar> {
|
|
func doSomething() {}
|
|
}
|
|
|
|
extension SR_7984 where Bar: String {} // expected-error {{type 'Bar' constrained to non-protocol, non-class type 'String'}} expected-note {{use 'Bar == String' to require 'Bar' to be 'String'}} {{28-29= ==}}
|
|
|
|
protocol SR_7984_Proto {
|
|
associatedtype Bar
|
|
}
|
|
|
|
extension SR_7984_Proto where Bar: String {} // expected-error {{type 'Self.Bar' constrained to non-protocol, non-class type 'String'}} expected-note {{use 'Bar == String' to require 'Bar' to be 'String'}} {{34-35= ==}}
|
|
|
|
protocol SR_7984_HasFoo {
|
|
associatedtype Foo
|
|
}
|
|
protocol SR_7984_HasAssoc {
|
|
associatedtype Assoc: SR_7984_HasFoo
|
|
}
|
|
|
|
struct SR_7984_X<T: SR_7984_HasAssoc> {}
|
|
extension SR_7984_X where T.Assoc.Foo: String {} // expected-error {{type 'T.Assoc.Foo' constrained to non-protocol, non-class type 'String'}} expected-note {{use 'T.Assoc.Foo == String' to require 'T.Assoc.Foo' to be 'String'}} {{38-39= ==}}
|
|
|
|
struct SR_7984_S<T: Sequence> where T.Element: String {} // expected-error {{type 'T.Element' constrained to non-protocol, non-class type 'String'}} expected-note {{use 'T.Element == String' to require 'T.Element' to be 'String'}} {{46-47= ==}}
|
|
func SR_7984_F<T: Sequence>(foo: T) where T.Element: String {} // expected-error {{type 'T.Element' constrained to non-protocol, non-class type 'String'}} expected-note {{use 'T.Element == String' to require 'T.Element' to be 'String'}} {{52-53= ==}}
|
|
|
|
protocol SR_7984_P {
|
|
func S<T : Sequence>(bar: T) where T.Element: String // expected-error {{type 'T.Element' constrained to non-protocol, non-class type 'String'}} expected-note {{use 'T.Element == String' to require 'T.Element' to be 'String'}} {{47-48= ==}}
|
|
}
|
|
|
|
struct A<T: String> {} // expected-error {{type 'T' constrained to non-protocol, non-class type 'String'}}
|
|
struct B<T> where T: String {} // expected-error {{type 'T' constrained to non-protocol, non-class type 'String'}}
|
|
protocol C {
|
|
associatedtype Foo: String // expected-error {{type 'Self.Foo' constrained to non-protocol, non-class type 'String'}}
|
|
}
|
|
protocol D {
|
|
associatedtype Foo where Foo: String // expected-error {{type 'Self.Foo' constrained to non-protocol, non-class type 'String'}}
|
|
}
|
|
|
|
func member_ref_with_explicit_init() {
|
|
struct S<T: P> { // expected-note {{where 'T' = 'Int'}}
|
|
init(_: T) {}
|
|
init(_: T, _ other: Int = 42) {}
|
|
}
|
|
|
|
_ = S.init(42)
|
|
// expected-error@-1 {{generic struct 'S' requires that 'Int' conform to 'P'}}
|
|
}
|
|
|
|
protocol Q {
|
|
init<T : P>(_ x: T) // expected-note 2{{where 'T' = 'T'}}
|
|
}
|
|
|
|
struct SR10694 {
|
|
init<T : P>(_ x: T) {} // expected-note 2{{where 'T' = 'T'}}
|
|
func bar<T>(_ x: T, _ s: SR10694, _ q: Q) {
|
|
SR10694.self(x) // expected-error {{initializer 'init(_:)' requires that 'T' conform to 'P'}}
|
|
|
|
type(of: s)(x) // expected-error {{initializer 'init(_:)' requires that 'T' conform to 'P'}}
|
|
// expected-error@-1 {{initializing from a metatype value must reference 'init' explicitly}}
|
|
|
|
Q.self(x) // expected-error {{initializer 'init(_:)' requires that 'T' conform to 'P'}}
|
|
// expected-error@-1 {{protocol type 'Q' cannot be instantiated}}
|
|
|
|
type(of: q)(x) // expected-error {{initializer 'init(_:)' requires that 'T' conform to 'P'}}
|
|
// expected-error@-1 {{initializing from a metatype value must reference 'init' explicitly}}
|
|
}
|
|
}
|