blob: dc9d4cc312e35be973ed1bd214696fd11e8b7522 [file] [log] [blame]
// Copyright (c) 2012, 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.
// @dart = 2.9
import "dart:collection";
// Test compile time error for factories with parameterized types.
abstract class A<T> {
A();
A.create();
}
abstract class B<T> extends A<T>{}
// Compile time error: should be AFactory<T> to match abstract class above
class AFactory extends B<int> {
factory A.create() { // //# 01: compile-time error
return null; // //# 01: continued
} // //# 01: continued
}
abstract class Link<T> extends IterableBase<T> {
factory Link(T head, [Link<T> tail]) = LinkEntry<T>;
Link<T> prepend(T element);
}
abstract class EmptyLink<T> extends Link<T> {
const factory EmptyLink() = LinkTail<T>;
}
class AbstractLink<T> implements Link<T> { /*@compile-error=unspecified*/
const AbstractLink();
Link<T> prepend(T element) {
print("$element");
if (0 is T) {
throw "0 is not a T";
}
return new Link<T>(element, this);
}
}
class LinkTail<T> extends AbstractLink<T> implements EmptyLink<T> { /*@compile-error=unspecified*/
const LinkTail();
}
class LinkEntry<T> extends AbstractLink<T> { /*@compile-error=unspecified*/
LinkEntry(T head, [Link<T> Tail]);
}
class Fisk {
Link<Fisk> nodes = const EmptyLink<Fisk>();
final int id;
Fisk(this.id);
toString() => id.toString();
}
main() {
var a = new AFactory.create(); // //# 01: continued
var a = new AFactory.create(); // //# none: compile-time error
new Fisk(0).nodes.prepend(new Fisk(1)).prepend(new Fisk(2));
}