// RUN: %target-run-simple-swift(-I %S/Inputs -cxx-interoperability-mode=swift-5.9)
// RUN: %target-run-simple-swift(-I %S/Inputs -cxx-interoperability-mode=swift-6)
// RUN: %target-run-simple-swift(-I %S/Inputs -cxx-interoperability-mode=upcoming-swift)
// RUN: %target-run-simple-swift(-g -I %S/Inputs -cxx-interoperability-mode=default)
//
// REQUIRES: executable_test

import StdlibUnittest
import MemberInheritance

var FunctionsTestSuite = TestSuite("Calling functions in foreign reference classes")

FunctionsTestSuite.test("base member FRT calls do not require copying") {
  let derived = makeCopyTrackedDerivedClass(42)!
  var copyCounter = getCopyCounter().pointee
  expectEqual(derived.getX(), 42)
  expectEqual(copyCounter, getCopyCounter().pointee)
  expectEqual(derived.getDerivedX(), 42)
  expectEqual(copyCounter, getCopyCounter().pointee)

  let derivedDerived = makeCopyTrackedDerivedDerivedClass(-5)!
  copyCounter = getCopyCounter().pointee
  expectEqual(derivedDerived.getX(), -5)
  expectEqual(derivedDerived.getY(), 11)
  expectEqual(copyCounter, getCopyCounter().pointee)
}

FunctionsTestSuite.test("base member FRT field access") {
  let copyCounter = getCopyCounter().pointee

  let derived = makeCopyTrackedDerivedClass(42)!
  expectEqual(derived.field, 43)
  expectEqual(copyCounter, getCopyCounter().pointee)

  let derivedDerived = makeCopyTrackedDerivedDerivedClass(-5)!
  expectEqual(derivedDerived.field, -4)
  expectEqual(copyCounter, getCopyCounter().pointee)
}

FunctionsTestSuite.test("base member FRT subscript access") {
  let copyCounter = getCopyCounter().pointee

  let derived = makeCopyTrackedDerivedClass(42)!
  expectEqual(derived[1], 44)
  expectEqual(copyCounter, getCopyCounter().pointee)

  let derivedDerived = makeCopyTrackedDerivedDerivedClass(-5)!
  expectEqual(derivedDerived[10], 6)
  expectEqual(copyCounter, getCopyCounter().pointee)
}

FunctionsTestSuite.test("base member FRT subscript accessing reference FRT") {
  let copyCounter = getCopyCounter().pointee

  var base = makeBaseReturningFRTFromSubscript()!
  var frt = base[1]
  expectEqual(frt.getX(), 1)

  let derived = makeDerivedFromBaseReturningFRTFromSubscript()!
  frt = derived[2]
  expectEqual(frt.getX(), 2)
}

FunctionsTestSuite.test("base member FRT subscript accessing reference FRT through constant subscript result value") {
  let derivedNoPtr = makeDerivedFromBaseReturningFRTFromSubscript()!
  var frt = derivedNoPtr[9]
  expectEqual(frt.getX(), 9)

  let derived = makeDerivedFromBaseReturningFRTFromSubscriptPointer()!
  frt = derived[1]!
  expectEqual(frt.getX(), 0)
}

if #available(SwiftStdlib 5.8, *) {
  FunctionsTestSuite.test("virtual members in FRT") {
    let i = Immortal.create()
    expectEqual(42, i.get42())
    expectEqual(0, i.getIntValue())

    let base = castToImmortalBase(i)
    expectEqual(42, base.get42())
    expectEqual(42, base.getOverridden42())
    expectEqual(0, base.getIntValue())

    i.setIntValue(566)
    expectEqual(566, i.getIntValue())
    expectEqual(566, base.getIntValue())

    let d = DerivedFromImmortal.create()
    expectEqual(42, d.get42())
    expectEqual(42, d.getOverridden42())
    d.setIntValue(321)
    expectEqual(321, d.getIntValue())
    let base2 = castToImmortalBase(castToImmortal(d))
    expectEqual(321, base2.getIntValue())
  }
}

#if !os(Windows) 
// FIXME in Windows, non-trivial C++ class with trivial ABI is not yet available in Swift
FunctionsTestSuite.test("C++ virtual method with complex parameter") {
  @available(SwiftStdlib 5.8, *)
  func f(simpleClass: HasDestructor, immortalClass: Immortal2) {
    immortalClass.virtualMethod(simpleClass)
  }
}
#endif

if #available(SwiftStdlib 5.8, *) {
  FunctionsTestSuite.test("renamed C++ virtual method") {
    func f(immortalClass: Immortal2) {
      immortalClass.swiftVirtualRename()
    }

    let a1 = A1.create()
    expectEqual(a1.virtualMethod(), 111)
    expectEqual(a1.swiftFooRename(), 112)
    expectEqual(a1.swiftBarRename(), 113)
    expectEqual(a1.swiftParamsRename(a1: 42), 42)

    let b1 = B1.create()
    expectEqual(b1.virtualMethod(), 211)
    expectEqual(b1.swiftFooRename(), 212)
    expectEqual(b1.swiftBarRename(), 213)
    expectEqual(b1.swiftParamsRename(a1: 42), 42)

    let b2 = B2.create()
    expectEqual(b2.virtualMethod(), 221)
    expectEqual(b2.swiftFooRename(), 222)
    expectEqual(b2.swiftBarRename(), 223)

    let c1 = C1.create()
    expectEqual(c1.virtualMethod(), 211)
    expectEqual(c1.swiftFooRename(), 312)
    expectEqual(c1.swiftBarRename(), 313)
    expectEqual(c1.swiftParamsRename(a1: 42), 42)

    let c2 = C2.create()
    expectEqual(c2.virtualMethod(), 321)
    expectEqual(c2.swiftFooRename(), 322)
    expectEqual(c2.swiftBarRename(), 323)
    expectEqual(c2.swiftParamsRename(a1: 42), 42)

    let a2 = A2.create()
    expectEqual(a2.swiftVirtualMethod(), 121)
    expectEqual(a2.swiftFooRename(), 122)
    expectEqual(a2.A2BarRename(), 123)
    expectEqual(a2.swiftParamsRename(a2: 42), 43)

    let d1 = D1.create()
    expectEqual(d1.virtualMethod(), 111)
    expectEqual(d1.swiftBarRename(), 113)
    expectEqual(d1.swiftParamsRename(a1: 42), 42)
    // FIXME the method calls below return incorrect values
    expectEqual(d1.swiftVirtualMethod(), 111)     // should be 121
    expectEqual(d1.A2BarRename(), 113)            // should be 123
    expectEqual(d1.swiftParamsRename(a2: 42), 42) // should be 43
  } 
}

runAllTests()