dart-sdk/tests/language_2/type_propagation_assert_assignable_test.dart
Janice Collins 3bed0647a0 Migrate block 162 to Dart 2.0.
Based heavily on https://codereview.chromium.org/3007803002, but built from scratch with the updated migration script.

Change-Id: I52ecd5dd97a73ec2f5fc524de532c5605c5d0a7d
Reviewed-on: https://dart-review.googlesource.com/9360
Commit-Queue: Janice Collins <jcollins@google.com>
Reviewed-by: Janice Collins <jcollins@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
2017-10-03 17:47:59 +00:00

48 lines
871 B
Dart

// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Check that type of the AssertAssignable is recomputed correctly.
// VMOptions=--optimization-counter-threshold=10 --no-use-osr
import "package:expect/expect.dart";
class A {
final p;
final _b;
b() {
try {
return _b;
} catch (e) {}
}
A(this.p, this._b);
}
class B extends A {
B(p, b) : super(p, b);
}
bar(v) {
for (var x = v; x != null; x = x.p) {
if (x.b()) {
return x;
}
}
return null;
}
foo(v) {
A x = bar(v);
return x != null;
}
main() {
final a = new A(new B(new A("haha", true), false), false);
for (var i = 0; i < 20; i++) {
Expect.isTrue(foo(a));
}
Expect.isTrue(foo(a));
}