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48608ce9bc
Change-Id: I8e21f82dc241a63f78fb1f6a25669b1aa633788c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152080 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Leaf Petersen <leafp@google.com>
125 lines
5.1 KiB
Dart
125 lines
5.1 KiB
Dart
// Copyright (c) 2019, 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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// Tests erroneous subclass usage for the `out` variance modifier.
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// SharedOptions=--enable-experiment=variance
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typedef CovFunction<T> = T Function();
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typedef ContraFunction<T> = void Function(T);
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typedef InvFunction<T> = T 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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mixin MCovariant<out T> {}
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mixin MContravariant<in T> {}
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mixin MInvariant<in T> {}
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class A<out T> extends Contravariant<T> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Contravariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class B<out T> implements Contravariant<T> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Contravariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class C<out T> with MContravariant<T> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'MContravariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class D<out T> extends Invariant<T> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'inout' position in supertype 'Invariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class E<out T> implements Invariant<T> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'inout' position in supertype 'Invariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class F<out T> with MInvariant<T> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'MInvariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class G<out T> extends Covariant<Contravariant<T>> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Covariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class H<out T> extends Contravariant<Covariant<T>> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Contravariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class I<out T> extends Covariant<ContraFunction<T>> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Covariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class J<out T> extends Covariant<ContraFunction<CovFunction<T>>> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Covariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class K<out T> extends Covariant<CovFunction<ContraFunction<T>>> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Covariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class L<out T> extends Covariant<ContraFunction<Covariant<T>>> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Covariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class M<out T> extends Contravariant<Contravariant<Contravariant<T>>> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Contravariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class N<out T> extends Covariant<InvFunction<T>> {}
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'inout' position in supertype 'Covariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class O<out T> = Covariant<T> with MContravariant<T>;
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'MContravariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class P<out T> = Contravariant<T> with MCovariant<T>;
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'Contravariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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class Q<out T> = Invariant<T> with MInvariant<T>;
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'in' position in supertype 'MInvariant'.
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// ^
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// [cfe] Can't use 'out' type variable 'T' in an 'inout' position in supertype 'Invariant'.
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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// ^
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// [analyzer] COMPILE_TIME_ERROR.WRONG_EXPLICIT_TYPE_PARAMETER_VARIANCE_IN_SUPERINTERFACE
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