swift-mirror/test/Interpreter/objc_implementation.swift

// RUN: %target-run-simple-swift(-import-objc-header %S/Inputs/objc_implementation.h -D TOP_LEVEL_CODE -swift-version 5) %s | %FileCheck %s
// REQUIRES: executable_test
// REQUIRES: objc_interop

import Foundation

@_objcImplementation extension ImplClass {
  @objc override init() {
    self.implProperty = 0
    super.init()
  }

  @objc var implProperty: Int

  @objc class func runTests() {
    let impl = ImplClass()
    print("someMethod =", impl.someMethod())
    print("implProperty =", impl.implProperty)
    impl.implProperty = 42
    print("implProperty =", impl.implProperty)

    let swiftSub = SwiftSubclass()
    print("someMethod =", swiftSub.someMethod())
    print("implProperty =", swiftSub.implProperty)
    swiftSub.implProperty = 42
    print("implProperty =", swiftSub.implProperty)

    print("otherProperty =", swiftSub.otherProperty)
    swiftSub.otherProperty = 13
    print("otherProperty =", swiftSub.otherProperty)
    print("implProperty =", swiftSub.implProperty)
  }

  @objc func someMethod() -> String { "ImplClass.someMethod()" }
}

class SwiftSubclass: ImplClass {
  @objc var otherProperty: Int = 1

  override init() {
    super.init()
  }

  override func someMethod() -> String { "SwiftSubclass.someMethod()" }
}

// `#if swift` to ignore the inactive branch's contents
#if swift(>=5.0) && TOP_LEVEL_CODE
ImplClass.runTests()
// CHECK: someMethod = ImplClass.someMethod()
// CHECK: implProperty = 0
// CHECK: implProperty = 42
// CHECK: someMethod = SwiftSubclass.someMethod()
// CHECK: implProperty = 0
// CHECK: implProperty = 42
// CHECK: otherProperty = 1
// CHECK: otherProperty = 13
// CHECK: implProperty = 42
#endif