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622ea5e2f6
directly into the diagnostics subsystem. This ensures a more consistent treatment of type printing (e.g. catches a case where a diagnostic didn't single quote the type) and gives these diagnostics access to "aka". Swift SVN r30609
474 lines
19 KiB
Swift
474 lines
19 KiB
Swift
// RUN: %target-parse-verify-swift
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protocol P {
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typealias SomeType
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}
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protocol P2 {
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func wonka()
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}
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extension Int : P {
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typealias SomeType = Int
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}
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extension Double : P {
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typealias SomeType = Double
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}
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func f0(x: Int,
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_ y: Float) { }
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func f1(_: (Int, Float) -> Int) { }
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func f2(_: (_: (Int) -> Int)) -> Int {}
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func f3(_: (_: (Int) -> Float) -> Int) {}
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func f4(x: Int) -> Int { }
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func f5<T : P2>(_ : T) { }
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func f6<T : P, U : P where T.SomeType == U.SomeType>(t: T, _ u: U) {}
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var i : Int
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var d : Double
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// Check the various forms of diagnostics the type checker can emit.
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// Tuple size mismatch.
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f1( // expected-error {{cannot invoke 'f1' with an argument list of type '((Int) -> Int)'}}
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f4 // expected-note @-1 {{expected an argument list of type '((Int, Float) -> Int)'}}
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)
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// Tuple element unused.
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f0(i, i, // expected-error{{extra argument in call}}
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i)
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// FIXME: Tuple name mismatch.
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// FIXME: Position mismatch
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// f5(f4)
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// Tuple element not convertible.
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f0(i, // expected-error {{cannot invoke 'f0' with an argument list of type '(Int, Double)'}} expected-note{{expected an argument list of type '(Int, Float)'}}
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d
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)
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// Function result not a subtype.
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f1( // expected-error {{cannot invoke 'f1' with an argument list of type '((Int, Float) -> ())'}}
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f0 // expected-note @-1 {{expected an argument list of type '((Int, Float) -> Int)'}}
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)
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f3( // expected-error {{cannot invoke 'f3' with an argument list of type '((((Int) -> Int)) -> Int)'}}
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f2 // expected-note @-1 {{expected an argument list of type '(((Int) -> Float) -> Int)'}}
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)
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// FIXME: Can't test same-type diagnostic yet.
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// f4(i, d)
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// FIXME: Can't test constructible requirement yet.
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// Missing member.
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i.wobble() // expected-error{{'Int' does not have a member named 'wobble'}}
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// <rdar://problem/19658691> QoI: Incorrect diagnostic for calling nonexistent members on literals
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1.doesntExist(0) // expected-error {{value of type 'Int' has no member 'doesntExist'}}
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[1, 2, 3].doesntExist(0) // expected-error {{'Array<Element>' does not have a member named 'doesntExist'}}
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"awfawf".doesntExist(0) // expected-error {{'String' does not have a member named 'doesntExist'}}
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// Does not conform to protocol.
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// FIXME: f5(i)
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// Make sure we don't leave open existentials when diagnosing.
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// <rdar://problem/20598568>
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func pancakes(p: P2) {
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f4(p.wonka) // expected-error{{cannot invoke 'f4' with an argument list of type '(() -> ())'}}
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// expected-note@-1{{expected an argument list of type '(Int)'}}
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f4(p.wonka()) // expected-error{{cannot invoke 'f4' with an argument list of type '()'}}
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// expected-note@-1{{expected an argument list of type '(Int)'}}
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}
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protocol Shoes {
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static func select(subject: Shoes) -> Self
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}
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// Here the opaque value has type (metatype_type (archetype_type ... ))
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func f(x: Shoes, asType t: Shoes.Type) {
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return t.select(x) // expected-error{{unexpected non-void return value in void function}}
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}
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infix operator **** {
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associativity left
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precedence 200
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}
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func ****(_: Int, _: String) { }
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i **** i // expected-error{{binary operator '****' cannot be applied to two 'Int' operands}}
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// expected-note @-1 {{expected an argument list of type '(Int, String)'}}
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infix operator ***~ {
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associativity left
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precedence 200
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}
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func ***~(_: Int, _: String) { }
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i ***~ i // expected-error{{binary operator '***~' cannot be applied to two 'Int' operands}}
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// expected-note @-1 {{expected an argument list of type '(Int, String)'}}
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// <rdar://problem/20142523>
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// FIXME: poor diagnostic, to be fixed in 20142462. For now, we just want to
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// make sure that it doesn't crash.
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func rdar20142523() {
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// expected-note @+1 {{overloads for 'map' exist with these partially matching parameter lists: (S, (S.Generator.Element) -> T), (C, (C.Generator.Element) -> T), (T?, @noescape (T) -> U)}}
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map(0..<10, { x in // expected-error{{cannot invoke 'map' with an argument list of type '(Range<Int>, (_) -> _)'}}
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()
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return x
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})
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}
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// <rdar://problem/21080030> Bad diagnostic for invalid method call in boolean expression: (_, IntegerLiteralConvertible)' is not convertible to 'IntegerLiteralConvertible
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func rdar21080030() {
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var s = "Hello"
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if s.characters.count() == 0 {} // expected-error{{cannot call value of non-function type 'Distance'}}
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}
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// <rdar://problem/21248136> QoI: problem with return type inference mis-diagnosed as invalid arguments
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func r21248136<T>() -> T { preconditionFailure() } // expected-note 2 {{in call to function 'r21248136'}}
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r21248136() // expected-error {{argument for generic parameter 'T' could not be inferred}}
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let _ = r21248136() // expected-error {{argument for generic parameter 'T' could not be inferred}}
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// <rdar://problem/16375647> QoI: Uncallable funcs should be compile time errors
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func perform<T>() {} // expected-error {{generic parameter 'T' is not used in function signature}}
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// <rdar://problem/17080659> Error Message QOI - wrong return type in an overload
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func recArea(h: Int, w : Int) {
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return h * w // expected-error {{unexpected non-void return value in void function}}
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}
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// <rdar://problem/17224804> QoI: Error In Ternary Condition is Wrong
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func r17224804(monthNumber : Int) {
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// expected-error @+2 {{binary operator '+' cannot be applied to operands of type 'String' and 'Int'}}
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// expected-note @+1 {{overloads for '+' exist with these partially matching parameter lists: (Int, Int), (String, String), (UnsafeMutablePointer<Memory>, Int), (UnsafePointer<Memory>, Int)}}
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let monthString = (monthNumber <= 9) ? ("0" + monthNumber) : String(monthNumber)
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}
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// <rdar://problem/17020197> QoI: Operand of postfix '!' should have optional type; type is 'Int?'
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func r17020197(x : Int?, y : Int) {
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if x! { } // expected-error {{type 'Int' does not conform to protocol 'BooleanType'}}
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// <rdar://problem/12939553> QoI: diagnostic for using an integer in a condition is utterly terrible
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if y {} // expected-error {{type 'Int' does not conform to protocol 'BooleanType'}}
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}
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// <rdar://problem/20714480> QoI: Boolean expr not treated as Bool type when function return type is different
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func validateSaveButton(text: String) {
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return (text.characters.count > 0) ? true : false // expected-error {{unexpected non-void return value in void function}}
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}
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// <rdar://problem/20201968> QoI: poor diagnostic when calling a class method via a metatype
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class r20201968C {
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func blah() {
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r20201968C.blah() // expected-error {{missing argument for parameter #1 in call}}
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}
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}
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// <rdar://problem/21459429> QoI: Poor compilation error calling assert
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func r21459429(a : Int) {
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assert(a != nil, "ASSERT COMPILATION ERROR") // expected-error {{binary operator '!=' cannot be applied to operands of type 'Int' and 'NilLiteralConvertible'}}
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// expected-note @-1 {{expected an argument list of type '(Int, Int)'}}
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}
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// <rdar://problem/21362748> [WWDC Lab] QoI: cannot subscript a value of type '[Int]?' with an index of type 'Int'
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struct StructWithOptionalArray {
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var array: [Int]?
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}
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func testStructWithOptionalArray(foo: StructWithOptionalArray) -> Int {
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return foo.array[0] // expected-error {{cannot subscript a value of type '[Int]?'}}
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}
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// <rdar://problem/19774755> Incorrect diagnostic for unwrapping non-optional bridged types
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var invalidForceUnwrap = Int()! // expected-error {{cannot force unwrap value of non-optional type 'Int'}}
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// <rdar://problem/20905802> Swift using incorrect diagnostic sometimes on String().asdf
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String().asdf // expected-error {{value of type 'String' has no member 'asdf'}}
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// <rdar://problem/21553065> Spurious diagnostic: '_' can only appear in a pattern or on the left side of an assignment
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protocol r21553065Protocol {}
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class r21553065Class<T : AnyObject> {}
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_ = r21553065Class<r21553065Protocol>() // expected-error {{protocol type 'r21553065Protocol' does not conform to protocol 'AnyObject' because 'r21553065Protocol' is not declared @objc}}
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// Type variables not getting erased with nested closures
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struct Toe {
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let toenail: Nail // expected-error {{use of undeclared type 'Nail'}}
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func clip() {
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toenail.inspect { x in // expected-error {{'Toe' does not have a member named 'toenail'}}
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toenail.inspect { y in }
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}
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}
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}
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// <rdar://problem/21447318> dot'ing through a partially applied member produces poor diagnostic
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class r21447318 {
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var x = 42
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func doThing() -> r21447318 { return self }
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}
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func test21447318(a : r21447318, b : () -> r21447318) {
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a.doThing.doThing() // expected-error {{method 'doThing' was used as a property; add () to call it}} {{12-12=()}}
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b.doThing() // expected-error {{function value was used as a property; add () to call it}} {{4-4=()}}
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}
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// <rdar://problem/20409366> Diagnostics for init calls should print the class name
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class r20409366C {
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init(a : Int) {}
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init?(a : r20409366C) {
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let req = r20409366C(a: 42)? // expected-error {{cannot use optional chaining on non-optional value of type 'r20409366C'}} {{32-33=}}
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}
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}
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// <rdar://problem/18800223> QoI: wrong compiler error when swift ternary operator branches don't match
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func r18800223(i : Int) {
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// 20099385
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_ = i == 0 ? "" : i // expected-error {{result values in '? :' expression have mismatching types 'String' and 'Int'}}
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// 19648528
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_ = true ? [i] : i // expected-error {{result values in '? :' expression have mismatching types '[Int]' and 'Int'}}
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var buttonTextColor: String?
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_ = (buttonTextColor != nil) ? 42 : {$0}; // expected-error {{type of expression is ambiguous without more context}}
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}
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// <rdar://problem/21883806> Bogus "'_' can only appear in a pattern or on the left side of an assignment" is back
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_ = { $0 } // expected-error {{type of expression is ambiguous without more context}}
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_ = 4() // expected-error {{invalid use of '()' to call a value of non-function type 'Int'}}
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_ = 4(1) // expected-error {{cannot call value of non-function type 'Int'}}
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// <rdar://problem/21784170> Incongruous `unexpected trailing closure` error in `init` function which is cast and called without trailing closure.
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func rdar21784170() {
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let initial = (1.0 as Double, 2.0 as Double)
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(Array.init as (Double...) -> Array<Double>)(initial as (Double, Double)) // expected-error {{cannot invoke value of type '(Double...) -> Array<Double>' with argument list '(Double, Double)'}}
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}
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// <rdar://problem/21829141> BOGUS: unexpected trailing closure
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func expect<T, U>(_: T)(_: U.Type) {}
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func expect<T, U>(_: T, _: Int = 1)(_: U.Type) {}
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expect(Optional(3))(Optional<Int>.self) // expected-error {{cannot invoke 'expect' with an argument list of type '(Optional<Int>.Type)'}}
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// expected-note @-1 {{expected an argument list of type '(U.Type)'}}
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// <rdar://problem/19804707> Swift Enum Scoping Oddity
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func rdar19804707() {
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enum Op {
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case BinaryOperator((Double, Double) -> Double)
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}
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var knownOps : Op
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knownOps = Op.BinaryOperator({$1 - $0})
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knownOps = Op.BinaryOperator(){$1 - $0}
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knownOps = Op.BinaryOperator{$1 - $0}
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knownOps = .BinaryOperator({$1 - $0})
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knownOps = .BinaryOperator(){$1 - $0} // expected-error {{could not find member 'BinaryOperator'}}
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knownOps = .BinaryOperator{$1 - $0} // expected-error {{could not find member 'BinaryOperator'}}
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}
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// <rdar://problem/20789423> Unclear diagnostic for multi-statement closure with no return type
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func r20789423() {
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class C {
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func f(value: Int) { }
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}
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let p: C
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print(p.f(p)()) // expected-error {{cannot invoke 'f' with an argument list of type '(C)'}}
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// expected-note @-1 {{expected an argument list of type '(Int)'}}
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let _f = { (v: Int) in // expected-error {{unable to infer closure type in the current context}}
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// expected-note @-1 {{multi-statement closures require an explicit return type}}
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print("a")
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return "hi"
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}
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}
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func f7(a: Int)(b : Int) -> Int {
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return a+b
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}
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f7(1)(b: 1)
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f7(1.0)(2) // expected-error {{cannot invoke 'f7' with an argument list of type '(Double)'}}
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// expected-note @-1 {{expected an argument list of type '(Int)'}}
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f7(1)(1.0) // expected-error {{cannot invoke 'f7' with an argument list of type '(Double)'}}
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// expected-note @-1 {{expected an argument list of type '(b: Int)'}}
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let f8 = f7(2)
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f8(b: 1)
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f8(10) // expected-error {{missing argument label 'b:' in call}}
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f8(1.0) // expected-error {{cannot invoke 'f8' with an argument list of type '(Double)'}}
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// expected-note @-1 {{expected an argument list of type '(b: Int)'}}
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class CurriedClass {
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func method1() {}
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func method2(a: Int)(b : Int) {}
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func method3(a: Int, b : Int) {}
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}
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let c = CurriedClass()
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_ = c.method1
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c.method1(1) // expected-error {{cannot invoke 'method1' with an argument list of type '(Int)'}}
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// expected-note @-1 {{expected an argument list of type '()'}}
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_ = c.method2(1)
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_ = c.method2(1.0) // expected-error {{cannot invoke 'method2' with an argument list of type '(Double)'}}
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// expected-note @-1 {{expected an argument list of type '(Int)'}}
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c.method2(1)(b: 2)
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c.method2(1)(c: 2) // expected-error {{incorrect argument label in call (have 'c:', expected 'b:')}}
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c.method2(1)(c: 2.0) // expected-error {{cannot invoke 'method2' with an argument list of type '(c: Double)'}}
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// expected-note @-1 {{expected an argument list of type '(b: Int)'}}
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c.method2(1)(b: 2.0) // expected-error {{cannot invoke 'method2' with an argument list of type '(b: Double)'}}
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// expected-note @-1 {{expected an argument list of type '(b: Int)'}}
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c.method2(1.0)(b: 2) // expected-error {{cannot invoke 'method2' with an argument list of type '(Double)'}}
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// expected-note @-1 {{expected an argument list of type '(Int)'}}
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c.method2(1.0)(b: 2.0) // expected-error {{cannot invoke 'method2' with an argument list of type '(Double)'}}
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// expected-note @-1 {{expected an argument list of type '(Int)'}}
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CurriedClass.method1(c)()
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_ = CurriedClass.method1(c)
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CurriedClass.method1(c)(1) // expected-error {{cannot invoke 'method1' with an argument list of type '(Int)'}}
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// expected-note @-1 {{expected an argument list of type '()'}}
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CurriedClass.method1(2.0)(1) // expected-error {{cannot invoke 'method1' with an argument list of type '(Double)'}}
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// expected-note @-1 {{expected an argument list of type '(CurriedClass)'}}
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CurriedClass.method2(c)(32)(b: 1)
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_ = CurriedClass.method2(c)
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_ = CurriedClass.method2(c)(32)
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_ = CurriedClass.method2(1,2) // expected-error {{extra argument in call}}
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CurriedClass.method2(c)(1.0)(b: 1) // expected-error {{cannot invoke 'method2' with an argument list of type '(Double)'}}
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// expected-note @-1 {{expected an argument list of type '(Int)'}}
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CurriedClass.method2(c)(1)(b: 1.0) // expected-error {{cannot invoke 'method2' with an argument list of type '(b: Double)'}}
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// expected-note @-1 {{expected an argument list of type '(b: Int)'}}
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CurriedClass.method2(c)(2)(c: 1.0) // expected-error {{cannot invoke 'method2' with an argument list of type '(c: Double)'}}
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// expected-note @-1 {{expected an argument list of type '(b: Int)'}}
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CurriedClass.method3(c)(32, b: 1)
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_ = CurriedClass.method3(c)
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_ = CurriedClass.method3(c)(1, 2) // expected-error {{missing argument label 'b:' in call}}
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_ = CurriedClass.method3(c)(1, b: 2)(32) // expected-error {{cannot call value of non-function type '()'}}
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_ = CurriedClass.method3(1, 2) // expected-error {{extra argument in call}}
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CurriedClass.method3(c)(1.0, b: 1) // expected-error {{cannot invoke 'method3' with an argument list of type '(Double, b: Int)'}}
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// expected-note @-1 {{expected an argument list of type '(Int, b: Int)'}}
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CurriedClass.method3(c)(1) // expected-error {{cannot invoke 'method3' with an argument list of type '(Int)'}}
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// expected-note @-1 {{expected an argument list of type '(Int, b: Int)'}}
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CurriedClass.method3(c)(c: 1.0) // expected-error {{missing argument for parameter 'b' in call}}
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extension CurriedClass {
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func f() {
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method3(1, b: 2)
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method3() // expected-error {{missing argument for parameter #1 in call}}
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method3(42) // expected-error {{cannot invoke 'method3' with an argument list of type '(Int)'}}
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// expected-note @-1 {{expected an argument list of type '(Int, b: Int)'}}
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method3(self) // expected-error {{missing argument for parameter 'b' in call}}
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}
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}
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// <rdar://problem/19870975> Incorrect diagnostic for failed member lookups within closures passed as arguments ("(_) -> _")
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func ident<T>(t: T) -> T {}
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var c = ident({1.DOESNT_EXIST}) // error: expected-error {{value of type 'Int' has no member 'DOESNT_EXIST'}}
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// <rdar://problem/20712541> QoI: Int/UInt mismatch produces useless error inside a block
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var afterMessageCount : Int? = nil
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func uintFunc() -> UInt {}
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func takeVoidVoidFn(a : () -> ()) {}
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takeVoidVoidFn { () -> Void in
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afterMessageCount = uintFunc() // expected-error {{'UInt' is not convertible to 'Int'}}
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}
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// <rdar://problem/19997471> Swift: Incorrect compile error when calling a function inside a closure
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func f19997471(x: String) {}
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func f19997471(x: Int) {}
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func someGeneric19997471<T>(x: T) {
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takeVoidVoidFn {
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f19997471(x) // expected-error {{cannot invoke 'f19997471' with an argument list of type '(T)'}}
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// expected-note @-1 {{overloads for 'f19997471' exist with these partially matching parameter lists: (String), (Int)}}
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}
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}
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// <rdar://problem/20371273> Type errors inside anonymous functions don't provide enough information
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func f20371273() {
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let x: [Int] = [1, 2, 3, 4]
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let y: UInt = 4
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x.filter { $0 == y } // expected-error {{cannot invoke 'filter' with an argument list of type '((UInt) -> Bool)'}}
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// expected-note @-1 {{expected an argument list of type '(@noescape (Self.Generator.Element) -> Bool)'}}
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}
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// <rdar://problem/20921068> Swift fails to compile: [0].map() { _ in let r = (1,2).0; return r }
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// FIXME: Should complain about not having a return type annotation in the closure.
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[0].map { _ in let r = (1,2).0; return r } // expected-error {{cannot invoke 'map' with an argument list of type '((_) -> _)'}}
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// <rdar://problem/21078316> Less than useful error message when using map on optional dictionary type
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func rdar21078316() {
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var foo : [String : String]?
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var bar : [(String, String)]?
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bar = foo.map { ($0, $1) } // expected-error {{type of expression is ambiguous without more context}}
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}
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// <rdar://problem/20978044> QoI: Poor diagnostic when using an incorrect tuple element in a closure
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var numbers = [1, 2, 3]
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zip(numbers, numbers).filter { $0.1 > 1 && $0.2 > 1 } // expected-error {{type of expression is ambiguous without more context}}
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// <rdar://problem/20868864> QoI: Cannot invoke 'function' with an argument list of type 'type'
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func foo20868864(callback: ([String]) -> ()) { }
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func rdar20868864(var s: String) {
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foo20868864 { (strings: [String]) in
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s = strings // expected-error {{'[String]' is not convertible to 'String'}}
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}
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|
}
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|
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// <rdar://problem/20491794> Error message does not tell me what the problem is
|
|
enum Color {
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|
case Red
|
|
case Unknown(description: String)
|
|
}
|
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let _: (Int, Color) = [1,2].map({ ($0, .Unknown("")) }) // expected-error {{type of expression is ambiguous without more context}}
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func testTypeSugar(a : Int) {
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|
typealias Stride = Int
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|
|
let x = Stride(a)
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x+"foo" // expected-error {{binary operator '+' cannot be applied to operands of type 'Stride' (aka 'Int') and 'String'}}
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// expected-note @-1 {{overloads for '+' exist with these partially matching parameter lists: (Int, Int), (String, String), (Int, UnsafeMutablePointer<Memory>), (Int, UnsafePointer<Memory>)}}
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}
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