Robert Nystrom
fc1b1ecc71
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Alexander Thomas <athom@google.com>
29 lines
999 B
Dart
29 lines
999 B
Dart
// Copyright (c) 2017, 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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// Verify that function type parameter S can be resolved in bar's result type.
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// Verify that generic function types are not allowed as type arguments.
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import "package:expect/expect.dart";
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int foo
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<T>
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(int i, int j) => i + j;
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List<int Function<T>(S, int)> bar<S extends int>() {
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// ^^^^^^^^^^^^^^^^^^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT
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// ^
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// [cfe] A generic function type can't be used as a type argument.
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return <int Function<T>(S, int)>[foo, foo];
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}
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void main() {
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var list = bar<int>();
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// ^
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// [cfe] Generic function type 'int Function<T>(int, int)' inferred as a type argument.
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print(list[0].runtimeType);
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Expect.equals(123, list[1](100, 23));
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}
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