File: empty-extension.swift

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// Test that we don't print extensions to implementation-only imported types.

// RUN: %empty-directory(%t)

// RUN: %target-swift-frontend -emit-module %s -DIOI_LIB -module-name IOILib -emit-module-path %t/IOILib.swiftmodule
// RUN: %target-swift-frontend -emit-module %s -DEXPORTED_LIB -module-name IndirectLib -emit-module-path %t/IndirectLib.swiftmodule -I %t
// RUN: %target-swift-frontend -emit-module %s -DLIB -module-name Lib -emit-module-path %t/Lib.swiftmodule -I %t

// RUN: %target-swift-emit-module-interface(%t/out.swiftinterface) %s -I %t -module-name Test
// RUN: %target-swift-typecheck-module-from-interface(%t/out.swiftinterface) -I %t -module-name Test
// RUN: %FileCheck %s < %t/out.swiftinterface

// REQUIRES: OS=macosx

#if IOI_LIB

public struct IOIImportedType {
  public func foo() {}
}

#elseif EXPORTED_LIB

public struct ExportedType {
  public func foo() {}
}

#elseif LIB

@_exported import IndirectLib

public struct NormalImportedType {
  public func foo() {}
}

#else // Client

import Lib
@_implementationOnly import IOILib

public protocol PublicProto {
  func foo()
}
extension IOIImportedType : PublicProto {}

extension IOIImportedType {
  #if os(iOS)
    public func funcForAnotherOS() {}
  #endif
}
// CHECK-NOT: IOIImportedType
// CHECK-NOT: funcForAnotherOS

extension NormalImportedType : PublicProto {}
// CHECK: extension Lib.NormalImportedType

extension ExportedType : PublicProto {}
// CHECK: extension IndirectLib.ExportedType

extension NormalImportedType {
  #if os(macOS)
    public func funcForThisOS() {};
  #endif
}
// CHECK: funcForThisOS

#endif