invalid_string_interpolation_protocol.swift

// RUN: %target-typecheck-verify-swift

// Has a lot of invalid 'appendInterpolation' methods
publicstructBadStringInterpolation:StringInterpolationProtocol{
 // expected-error@-1{{type conforming to 'StringInterpolationProtocol' does not implement a valid 'appendInterpolation' method}} {{documentation-file=string-interpolation-conformance}}

publicinit(literalCapacity:Int, interpolationCount:Int){}
publicmutatingfunc appendLiteral(_:String){}

publicstaticfunc appendInterpolation(static:()){
 // expected-warning@-1{{'appendInterpolation' method will never be used because it is static}} {{10-17=}} {{documentation-file=string-interpolation-conformance}}
}

privatefunc appendInterpolation(private:()){
 // expected-warning@-1{{'appendInterpolation' method is private, but 'BadStringInterpolation' is public}}
}

func appendInterpolation(default:()){
 // expected-warning@-1{{'appendInterpolation' method is internal, but 'BadStringInterpolation' is public}}
}

publicfunc appendInterpolation(intResult:())->Int{
 // expected-warning@-1{{'appendInterpolation' method does not return 'Void' or have a discardable result}} {{10-10=@discardableResult }} {{documentation-file=string-interpolation-conformance}}
}
}

// Has no 'appendInterpolation' methods at all
publicstructIncompleteStringInterpolation:StringInterpolationProtocol{
 // expected-error@-1{{type conforming to 'StringInterpolationProtocol' does not implement a valid 'appendInterpolation' method}}

publicinit(literalCapacity:Int, interpolationCount:Int){}
publicmutatingfunc appendLiteral(_:String){}
}

// Has only good 'appendInterpolation' methods.
publicstructGoodStringInterpolation:StringInterpolationProtocol{
publicinit(literalCapacity:Int, interpolationCount:Int){}
publicmutatingfunc appendLiteral(_:String){}

publicfunc appendInterpolation(noResult:()){}

publicfunc appendInterpolation(voidResult:())->Void{}

@discardableResult
publicfunc appendInterpolation(discardableResult:())->Int{}
}

// Has only good 'appendInterpolation' methods, but they're in an extension.
publicstructGoodSplitStringInterpolation:StringInterpolationProtocol{
publicinit(literalCapacity:Int, interpolationCount:Int){}
publicmutatingfunc appendLiteral(_:String){}
}

extensionGoodSplitStringInterpolation{
publicfunc appendInterpolation(noResult:()){}

publicfunc appendInterpolation(voidResult:())->Void{}

@discardableResult
publicfunc appendInterpolation(discardableResult:())->Int{}
}

// Has only good 'appendInterpolation' methods, and is not public.
structGoodNonPublicStringInterpolation:StringInterpolationProtocol{
init(literalCapacity:Int, interpolationCount:Int){}
mutatingfunc appendLiteral(_:String){}

func appendInterpolation(noResult:()){}

publicfunc appendInterpolation(voidResult:())->Void{}

@discardableResult
func appendInterpolation(discardableResult:())->Int{}
}

// Has a mixture of good and bad 'appendInterpolation' methods.
// We don't emit any errors in this case--we assume the others
// are implementation details or something.
publicstructGoodStringInterpolationWithBadOnesToo:StringInterpolationProtocol{
publicinit(literalCapacity:Int, interpolationCount:Int){}
publicmutatingfunc appendLiteral(_:String){}

publicfunc appendInterpolation(noResult:()){}

publicstaticfunc appendInterpolation(static:()){}
privatefunc appendInterpolation(private:()){}
func appendInterpolation(default:()){}
publicfunc appendInterpolation(intResult:())->Int{}
}