Pavel Kirpichenkov
517688e163
Before fix only one level of type arguments was used to determine variance of type variable to find out direction requirements. This incorrect in general case, because outer variance affects subtyping deductions, for example: Inv<Out<A>> <: Inv<Out<B>> => A <: B; B <: A, despite A and B are in covariant position if only one level is considered ^KT-36233 Fixed
79 lines
3.0 KiB
Kotlin
Vendored
79 lines
3.0 KiB
Kotlin
Vendored
// !LANGUAGE: +NewInference
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// !DIAGNOSTICS: -UNUSED_PARAMETER
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interface Base
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class Derived : Base
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class OtherDerived : Base
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class Inv<T>
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class Out<out O>
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class In<in I>
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class BiParam<out F, out S>
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fun <K> id(arg: K) = arg
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fun <D> createDoubleIn(arg: D): In<In<D>> = TODO()
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fun <D> createDoubleInOut1(arg: D): In<In<Out<D>>> = TODO()
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fun <D> createDoubleInOut2(arg: D): In<Out<In<D>>> = TODO()
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fun <D> createDoubleInOut3(arg: D): Out<In<In<D>>> = TODO()
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fun <D> createInOut(arg: D): In<Out<D>> = TODO()
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fun <D> createOutIn(arg: D): Out<In<D>> = TODO()
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fun <D> createInvOut(arg: D): Inv<Out<D>> = TODO()
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fun <D> createOutInvDoubleIn(arg: D): Out<Inv<In<In<D>>>> = TODO()
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fun <F, S> biparamEarly(first: F, second: S): BiParam<In<In<F>>, Out<S>> = TODO()
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fun <F, S> biparamEarlyIrrelevantInv(first: F, second: S): BiParam<In<In<F>>, Inv<String>> = TODO()
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fun <F, S> biparamEarlyStarProjection(first: F, second: S): BiParam<*, In<In<S>>> = TODO()
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fun <F, S> biparamLateIn(first: F, second: S): BiParam<In<Out<F>>, S> = TODO()
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fun <F, S> biparamLateInv(first: F, second: S): BiParam<Inv<Out<F>>, S> = TODO()
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fun <T> take(biParam: BiParam<*, In<In<T>>>) {}
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fun testEarlyCompletion(derived: Derived, otherDerived: OtherDerived) {
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id<In<In<Base>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("In<In<Derived>>")!>createDoubleIn(derived)<!>
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)
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id<In<In<Out<Base>>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("In<In<Out<Derived>>>")!>createDoubleInOut1(derived)<!>
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)
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id<In<Out<In<Base>>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("In<Out<In<Derived>>>")!>createDoubleInOut2(derived)<!>
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)
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id<Out<In<In<Base>>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("Out<In<In<Derived>>>")!>createDoubleInOut3(derived)<!>
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)
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id<BiParam<In<In<Base>>, Out<Base>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("BiParam<In<In<Derived>>, Out<OtherDerived>>")!>biparamEarly(derived, otherDerived)<!>
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)
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id<BiParam<In<In<Base>>, Inv<String>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("BiParam<In<In<Derived>>, Inv<kotlin.String>>")!>biparamEarlyIrrelevantInv(derived, otherDerived)<!>
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)
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take<Base>(
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<!DEBUG_INFO_EXPRESSION_TYPE("BiParam<*, In<In<OtherDerived>>>")!>biparamEarlyStarProjection(derived, otherDerived)<!>
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)
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}
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fun testLateCompletion(derived: Derived, otherDerived: OtherDerived) {
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id<In<Out<Base>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("In<Out<Base>>")!>createInOut(derived)<!>
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)
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id<Out<In<Base>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("Out<In<Base>>")!>createOutIn(derived)<!>
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)
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id<Inv<Out<Base>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("Inv<Out<Base>>")!>createInvOut(derived)<!>
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)
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id<Out<Inv<In<In<Base>>>>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("Out<Inv<In<In<Base>>>>")!>createOutInvDoubleIn(derived)<!>
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)
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id<BiParam<In<Out<Base>>, OtherDerived>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("BiParam<In<Out<Base>>, OtherDerived>")!>biparamLateIn(derived, otherDerived)<!>
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)
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id<BiParam<Inv<Out<Base>>, OtherDerived>>(
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<!DEBUG_INFO_EXPRESSION_TYPE("BiParam<Inv<Out<Base>>, OtherDerived>")!>biparamLateInv(derived, otherDerived)<!>
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)
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}
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