// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend %s -module-name Methods -clang-header-expose-decls=all-public -typecheck -verify -emit-clang-header-path %t/methods.h
// RUN: %FileCheck %s < %t/methods.h

// RUN: %check-interop-cxx-header-in-clang(%t/methods.h -DSWIFT_CXX_INTEROP_HIDE_STL_OVERLAY)

public struct LargeStruct {
    let x1, x2, x3, x4, x5, x6: Int

    public func doubled() -> LargeStruct {
        return LargeStruct(x1: x1 * 2, x2: x2 * 2, x3: x3 * 2, x4: x4 * 2, x5: x5 * 2, x6: x6 * 2)
    }

    public func dump() {
        print("\(x1), \(x2), \(x3), \(x4), \(x5), \(x6)")
    }

    public func scaled(_ x: Int, _ y: Int) -> LargeStruct {
        return LargeStruct(x1: x1 * x, x2: x2 * y, x3: x3 * x, x4: x4 * y, x5: x5 * x, x6: x6 * y)
    }

    public func added(_ x: LargeStruct) -> LargeStruct {
        return LargeStruct(x1: x1 + x.x1, x2: x2 + x.x2, x3: x3 + x.x3, x4: x4 + x.x4, x5: x5 + x.x5, x6: x6 + x.x6)
    }

    static public func staticMethod() {
        print("LargeStruct.staticMethod;")
    }
}

public final class ClassWithMethods {
    var field: Int

    init(_ x: Int) {
      field = x
    }

    deinit {
        print("ClassWithMethods \(field) deinit")
    }

    public func dump() {
        print("ClassWithMethods \(field);")
    }

    public func sameRet() -> ClassWithMethods {
        return self
    }

    public func mutate() {
        field = -field
    }

    public func deepCopy(_ x: Int) -> ClassWithMethods {
        return ClassWithMethods(field + x)
    }

    static public func staticFinalClassMethod(x: Int) -> LargeStruct {
        print("ClassWithMethods.staticFinalClassMethod;")
        return LargeStruct(x1: 1, x2: -1, x3: -x, x4: -2, x5: x, x6: -456)
    }
}

public class ClassWithNonFinalMethods {
    class public func classClassMethod(x: Int) -> Int {
        print("ClassWithNonFinalMethods.classClassMethod;")
        return x + 2
    }
    static public func staticClassMethod() {
        print("ClassWithNonFinalMethods.staticClassMethod;")
    }
}

public final class PassStructInClassMethod {
    var largeStruct: LargeStruct
    init() { largeStruct = LargeStruct(x1: 1, x2: 2, x3: 3, x4: 4, x5: 5, x6: 6) }

    public func retStruct(_ x: Int) -> LargeStruct {
        print("PassStructInClassMethod.retStruct \(x);")
        return largeStruct
    }
    public func updateStruct(_ x: Int, _ y: LargeStruct) {
        largeStruct = LargeStruct(x1: x, x2: y.x2, x3: y.x3, x4: y.x4, x5: y.x5, x6: y.x6)
    }
}

// CHECK: SWIFT_EXTERN void $s7Methods09ClassWithA0C4dumpyyF(SWIFT_CONTEXT void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // dump()
// CHECK: SWIFT_EXTERN void * _Nonnull $s7Methods09ClassWithA0C7sameRetACyF(SWIFT_CONTEXT void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // sameRet()
// CHECK: SWIFT_EXTERN void $s7Methods09ClassWithA0C6mutateyyF(SWIFT_CONTEXT void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // mutate()
// CHECK: SWIFT_EXTERN void * _Nonnull $s7Methods09ClassWithA0C8deepCopyyACSiF(ptrdiff_t x, SWIFT_CONTEXT void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // deepCopy(_:)
// CHECK: SWIFT_EXTERN void $s7Methods11LargeStructV7doubledACyF(SWIFT_INDIRECT_RESULT void * _Nonnull, SWIFT_CONTEXT const void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // doubled()
// CHECK:  SWIFT_EXTERN void $s7Methods11LargeStructV4dumpyyF(SWIFT_CONTEXT const void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // dump()
// CHECK:  SWIFT_EXTERN void $s7Methods11LargeStructV6scaledyACSi_SitF(SWIFT_INDIRECT_RESULT void * _Nonnull, ptrdiff_t x, ptrdiff_t y, SWIFT_CONTEXT const void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // scaled(_:_:)
// CHECK:  SWIFT_EXTERN void $s7Methods11LargeStructV5addedyA2CF(SWIFT_INDIRECT_RESULT void * _Nonnull, const void * _Nonnull x, SWIFT_CONTEXT const void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // added(_:)
// CHECK: SWIFT_EXTERN void $s7Methods23PassStructInClassMethodC03retC0yAA05LargeC0VSiF(SWIFT_INDIRECT_RESULT void * _Nonnull, ptrdiff_t x, SWIFT_CONTEXT void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // retStruct(_:)
// CHECK: SWIFT_EXTERN void $s7Methods23PassStructInClassMethodC06updateC0yySi_AA05LargeC0VtF(ptrdiff_t x, const void * _Nonnull y, SWIFT_CONTEXT void * _Nonnull _self) SWIFT_NOEXCEPT SWIFT_CALL; // updateStruct(_:_:)

// CHECK: class SWIFT_SYMBOL("s:7Methods09ClassWithA0C") ClassWithMethods final : public swift::_impl::RefCountedClass {
// CHECK:   using RefCountedClass::RefCountedClass;
// CHECK-NEXT:   using RefCountedClass::operator=;
// CHECK-NEXT:   SWIFT_INLINE_THUNK void dump() SWIFT_SYMBOL("s:7Methods09ClassWithA0C4dumpyyF");
// CHECK-NEXT:   SWIFT_INLINE_THUNK ClassWithMethods sameRet() SWIFT_SYMBOL("s:7Methods09ClassWithA0C7sameRetACyF");
// CHECK-NEXT:   SWIFT_INLINE_THUNK void mutate() SWIFT_SYMBOL("s:7Methods09ClassWithA0C6mutateyyF");
// CHECK-NEXT:   SWIFT_INLINE_THUNK ClassWithMethods deepCopy(swift::Int x) SWIFT_SYMBOL("s:7Methods09ClassWithA0C8deepCopyyACSiF");
// CHECK-NEXT:   static SWIFT_INLINE_THUNK LargeStruct staticFinalClassMethod(swift::Int x) SWIFT_SYMBOL("s:7Methods09ClassWithA0C011staticFinalB6Method1xAA11LargeStructVSi_tFZ");

// CHECK: class SWIFT_SYMBOL("s:7Methods11LargeStructV") LargeStruct final {
// CHECK: SWIFT_INLINE_PRIVATE_HELPER LargeStruct(LargeStruct &&)
// CHECK: }
// CHECK-NEXT: SWIFT_INLINE_THUNK LargeStruct doubled() const SWIFT_SYMBOL("s:7Methods11LargeStructV7doubledACyF");
// CHECK-NEXT: SWIFT_INLINE_THUNK void dump() const SWIFT_SYMBOL("s:7Methods11LargeStructV4dumpyyF");
// CHECK-NEXT: SWIFT_INLINE_THUNK LargeStruct scaled(swift::Int x, swift::Int y) const SWIFT_SYMBOL("s:7Methods11LargeStructV6scaledyACSi_SitF");
// CHECK-NEXT: SWIFT_INLINE_THUNK LargeStruct added(const LargeStruct& x) const SWIFT_SYMBOL("s:7Methods11LargeStructV5addedyA2CF");
// CHECK-NEXT: static SWIFT_INLINE_THUNK void staticMethod() SWIFT_SYMBOL("s:7Methods11LargeStructV12staticMethodyyFZ");
// CHECK-NEXT: private

public struct WrapOverloadedMethods {
    let x: Int

    public func method(_ x: Int) {
    }
    public func method(_ x: Float) {
    }
    public func method(argLabel y: Int64) {
    }
}

// CHECK: WrapOverloadedMethods final {
// CHECK: SWIFT_INLINE_THUNK void method
// CHECK-SAME: (swift::Int x) const SWIFT_SYMBOL("s:7Methods014WrapOverloadedA0V6methodyySiF");
// CHECK-NEXT: private:

public struct WrapOverloadedMethodsSibling {
    let x: Int

    // Sibling method with same name should be emitted.
    public func method(_ x: Int) {
    }
}

// CHECK: WrapOverloadedMethodsSibling final {
// CHECK: SWIFT_INLINE_THUNK void method
// CHECK-SAME: (swift::Int x) const SWIFT_SYMBOL("s:7Methods014WrapOverloadedA7SiblingV6methodyySiF");
// CHECK-NEXT: private:

public func createClassWithMethods(_ x: Int) -> ClassWithMethods {
    return ClassWithMethods(x)
}

public func createLargeStruct() -> LargeStruct {
    return LargeStruct(x1: -1, x2: 2, x3: -100, x4: 42, x5: 67, x6: -10101)
}

public func createPassStructInClassMethod() -> PassStructInClassMethod {
    return PassStructInClassMethod()
}


// CHECK: SWIFT_INLINE_THUNK void ClassWithMethods::dump() {
// CHECK-NEXT: _impl::$s7Methods09ClassWithA0C4dumpyyF(::swift::_impl::_impl_RefCountedClass::getOpaquePointer(*this));
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK ClassWithMethods ClassWithMethods::sameRet() {
// CHECK-NEXT: return _impl::_impl_ClassWithMethods::makeRetained(Methods::_impl::$s7Methods09ClassWithA0C7sameRetACyF(::swift::_impl::_impl_RefCountedClass::getOpaquePointer(*this)));
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK void ClassWithMethods::mutate() {
// CHECK-NEXT: _impl::$s7Methods09ClassWithA0C6mutateyyF(::swift::_impl::_impl_RefCountedClass::getOpaquePointer(*this));
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK ClassWithMethods ClassWithMethods::deepCopy(swift::Int x) {
// CHECK-NEXT: return _impl::_impl_ClassWithMethods::makeRetained(Methods::_impl::$s7Methods09ClassWithA0C8deepCopyyACSiF(x, ::swift::_impl::_impl_RefCountedClass::getOpaquePointer(*this)));
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK LargeStruct ClassWithMethods::staticFinalClassMethod(swift::Int x) {
// CHECK-NEXT: return Methods::_impl::_impl_LargeStruct::returnNewValue([&](char * _Nonnull result) SWIFT_INLINE_THUNK_ATTRIBUTES {
// CHECK-NEXT:   _impl::$s7Methods09ClassWithA0C011staticFinalB6Method1xAA11LargeStructVSi_tFZ(result, x, swift::TypeMetadataTrait<ClassWithMethods>::getTypeMetadata());
// CHECK-NEXT: });
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK swift::Int ClassWithNonFinalMethods::classClassMethod(swift::Int x) {
// CHECK-NEXT: return Methods::_impl::$s7Methods017ClassWithNonFinalA0C05classB6Method1xS2i_tFZ(x, swift::TypeMetadataTrait<ClassWithNonFinalMethods>::getTypeMetadata());
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK void ClassWithNonFinalMethods::staticClassMethod() {
// CHECK-NEXT: _impl::$s7Methods017ClassWithNonFinalA0C06staticB6MethodyyFZ(swift::TypeMetadataTrait<ClassWithNonFinalMethods>::getTypeMetadata());
// CHECK-NEXT: }

// CHECK:      SWIFT_INLINE_THUNK LargeStruct LargeStruct::doubled() const {
// CHECK-NEXT: return Methods::_impl::_impl_LargeStruct::returnNewValue([&](char * _Nonnull result) SWIFT_INLINE_THUNK_ATTRIBUTES {
// CHECK-NEXT:   _impl::$s7Methods11LargeStructV7doubledACyF(result, _getOpaquePointer());
// CHECK-NEXT: });
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK void LargeStruct::dump() const {
// CHECK-NEXT: _impl::$s7Methods11LargeStructV4dumpyyF(_getOpaquePointer());
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK LargeStruct LargeStruct::scaled(swift::Int x, swift::Int y) const {
// CHECK-NEXT: return Methods::_impl::_impl_LargeStruct::returnNewValue([&](char * _Nonnull result) SWIFT_INLINE_THUNK_ATTRIBUTES {
// CHECK-NEXT:   _impl::$s7Methods11LargeStructV6scaledyACSi_SitF(result, x, y, _getOpaquePointer());
// CHECK-NEXT: });
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK LargeStruct LargeStruct::added(const LargeStruct& x) const {
// CHECK-NEXT: return Methods::_impl::_impl_LargeStruct::returnNewValue([&](char * _Nonnull result) SWIFT_INLINE_THUNK_ATTRIBUTES {
// CHECK-NEXT:   _impl::$s7Methods11LargeStructV5addedyA2CF(result, Methods::_impl::_impl_LargeStruct::getOpaquePointer(x), _getOpaquePointer());
// CHECK-NEXT: });
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK void LargeStruct::staticMethod() {
// CHECK-NEXT: _impl::$s7Methods11LargeStructV12staticMethodyyFZ();
// CHECK-NEXT: }

// CHECK: SWIFT_INLINE_THUNK LargeStruct PassStructInClassMethod::retStruct(swift::Int x) {
// CHECK-NEXT: return Methods::_impl::_impl_LargeStruct::returnNewValue([&](char * _Nonnull result) SWIFT_INLINE_THUNK_ATTRIBUTES {
// CHECK-NEXT:   _impl::$s7Methods23PassStructInClassMethodC03retC0yAA05LargeC0VSiF(result, x, ::swift::_impl::_impl_RefCountedClass::getOpaquePointer(*this));
// CHECK-NEXT: });
// CHECK-NEXT: }
// CHECK-NEXT: SWIFT_INLINE_THUNK void PassStructInClassMethod::updateStruct(swift::Int x, const LargeStruct& y) {
// CHECK-NEXT: _impl::$s7Methods23PassStructInClassMethodC06updateC0yySi_AA05LargeC0VtF(x, Methods::_impl::_impl_LargeStruct::getOpaquePointer(y), ::swift::_impl::_impl_RefCountedClass::getOpaquePointer(*this));
// CHECK-NEXT: }