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@cdecl enums are Swift enums representable in C. These enums must have an integer raw type. They can be referenced from @cdecl functions and @objc methods. @objc enums are still rejected from @cdecl functions.
43 lines
2.0 KiB
Swift
43 lines
2.0 KiB
Swift
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -typecheck -verify %s \
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// RUN: -enable-experimental-feature CDecl
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// REQUIRES: swift_feature_CDecl
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// REQUIRES: objc_interop
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import Foundation
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@objc
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class ObjCClass: NSObject { }
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@cdecl("objcClassReturn") func objcClassReturn() -> ObjCClass { fatalError() }
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// expected-error @-1 {{global function cannot be marked '@cdecl' because its result type cannot be represented in C}}
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// expected-note @-2 {{classes cannot be represented in C}}
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@cdecl("objcClassParams") func objcClassParams(a: ObjCClass, b: ObjCClass) { }
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// expected-error @-1 {{global function cannot be marked '@cdecl' because the type of the parameter 1 cannot be represented in C}}
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// expected-error @-2 {{global function cannot be marked '@cdecl' because the type of the parameter 2 cannot be represented in C}}
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// expected-note @-3 2 {{classes cannot be represented in C}}
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@objc
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protocol ObjCProtocol {}
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@cdecl("objcProtocol") func objcProtocol(a: ObjCProtocol) { }
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// expected-error @-1 {{global function cannot be marked '@cdecl' because the type of the parameter cannot be represented in C}}
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// expected-note @-2 {{protocols cannot be represented in C}}
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@objc
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enum ObjCEnum: Int { case A, B }
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@cdecl("objcEnumUseInCDecl") func objcEnumUseInCDecl(a: ObjCEnum) { }
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// expected-error @-1 {{global function cannot be marked '@cdecl' because the type of the parameter cannot be represented in C}}
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// expected-note @-2 {{Swift enums not marked '@cdecl' cannot be represented in C}}
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/// Objective-C accepts @cdecl enums.
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@cdecl("CEnum")
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enum CEnum: Int { case A, B }
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@_cdecl("cdeclEnumUseInObjc") func cdeclEnumUseInObjc(a: CEnum) { }
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enum SwiftEnum { case A, B }
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@_cdecl("swiftEnumUseInObjc") func swiftEnumUseInObjc(a: SwiftEnum) { }
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// expected-error @-1 {{global function cannot be marked '@_cdecl' because the type of the parameter cannot be represented in Objective-C}}
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// expected-note @-2 {{Swift enums not marked '@cdecl' or '@objc' cannot be represented in Objective-C}}
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