Robert Nystrom
2034061433
Change-Id: I313a57ed7c7ea2ada75065f55a7367376f6bdae5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152183 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com>
42 lines
1.1 KiB
Dart
42 lines
1.1 KiB
Dart
// Copyright (c) 2018, 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 local functions capture `this` if their arguments refer to
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// type parameters from the enclosing class.
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import "package:expect/expect.dart";
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typedef void B<T>(T v);
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class MyFisk {}
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class MyHest {}
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class A<T> {
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var value;
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A(B<T> x) {
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// This function does not capture `this` explicitly, however it needs
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// to capture it in order to access T. Verify that we do it correctly.
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// If `this` is not captured then foo turns into (B<dynamic>) -> Null
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// which means that foo(x) would throw if T != dynamic.
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f(B<T> v) {}
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f(x);
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}
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foo<U>(B<T> x, B<U> y) {
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// This function does not capture `this` explicitly, verify that it still
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// can access `T`.
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f(B<T> v, B<U> y) {}
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f(x, y);
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}
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}
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void main() {
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new A<MyFisk>((MyFisk v) {});
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new A<MyFisk>((MyFisk v) {}).foo<MyHest>((MyFisk v) {}, (MyHest v) {});
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}
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