Johnni Winther
0fd7cd0456
Change-Id: Ifff0e171eff354c2f8fc87271c8b58db6b2117df Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/400581 Reviewed-by: Erik Ernst <eernst@google.com> Reviewed-by: Chloe Stefantsova <cstefantsova@google.com>
93 lines
3.1 KiB
Dart
93 lines
3.1 KiB
Dart
// Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Derived from language/variance/variance_in_method_error_test.dart
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typedef Inv<T> = void Function<X extends T>();
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typedef Cov<T> = T Function();
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typedef Contra<T> = void Function(T);
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class Covariant<out T> {}
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class Contravariant<in T> {}
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class Invariant<inout T> {}
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class A<in T> {
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T method1() => throw "uncalled";
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void method2(Contra<T> x) {}
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Cov<T> method3() {
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return () => throw "uncalled";
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}
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void method4(Contra<Cov<T>> x) {}
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void method5(Cov<Contra<T>> x) {}
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Contra<Contra<T>> method6() => (Contra<T> x) {};
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Cov<Cov<T>> method7() {
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return () {
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return () => throw "uncalled";
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};
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}
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Inv<T> method8() => throw "uncalled";
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void method9(Inv<T> x) {}
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Covariant<T> method10() => throw "uncalled";
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void method11(Contravariant<T> x) {}
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Invariant<T> method12() => throw "uncalled";
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void method13(Invariant<T> x) {}
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void method14(Contravariant<Covariant<T>> x) {}
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void method15(Covariant<Contravariant<T>> x) {}
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Contravariant<Contravariant<T>> method16() =>
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Contravariant<Contravariant<T>>();
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Covariant<Covariant<T>> method17() => Covariant<Covariant<T>>();
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void method18<X extends T>() {}
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void method19<X extends Cov<T>>() {}
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void method20<X extends Covariant<T>>() {}
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void method21({required Contra<T> x}) {}
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void method22({required Contravariant<T> x}) {}
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void method23({required Covariant<T> x, required Contravariant<T> y}) {}
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void method24<X extends Contra<T>>() {}
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void method25<X extends Contravariant<T>>() {}
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}
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mixin BMixin<in T> {
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T method1() => throw "uncalled";
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void method2(Contra<T> x) {}
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Cov<T> method3() {
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return () => throw "uncalled";
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}
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void method4(Contra<Cov<T>> x) {}
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void method5(Cov<Contra<T>> x) {}
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Contra<Contra<T>> method6() => (Contra<T> x) {};
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Cov<Cov<T>> method7() {
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return () {
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return () => throw "uncalled";
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};
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}
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Inv<T> method8() => throw "uncalled";
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void method9(Inv<T> x) {}
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Covariant<T> method10() => throw "uncalled";
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void method11(Contravariant<T> x) {}
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Invariant<T> method12() => throw "uncalled";
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void method13(Invariant<T> x) {}
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void method14(Contravariant<Covariant<T>> x) {}
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void method15(Covariant<Contravariant<T>> x) {}
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Contravariant<Contravariant<T>> method16() =>
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Contravariant<Contravariant<T>>();
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Covariant<Covariant<T>> method17() => Covariant<Covariant<T>>();
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void method18<X extends T>() {}
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void method19<X extends Cov<T>>() {}
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void method20<X extends Covariant<T>>() {}
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void method21({required Contra<T> x}) {}
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void method22({required Contravariant<T> x}) {}
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void method23({required Covariant<T> x, required Contravariant<T> y}) {}
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void method24<X extends Contra<T>>() {}
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void method25<X extends Contravariant<T>>() {}
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}
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class B<in T> {
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void method1(A<T> x) {}
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Contra<A<T>> method2() {
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throw "uncalled";
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}
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}
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class C<T> {
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void method(T x) {}
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}
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class D<in T> extends C<void Function(T)> {
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@override
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void method(void Function(T) x) {}
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} |