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6bfd82c6da
classes (issue 6324). Review URL: https://codereview.chromium.org//11434089 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15653 260f80e4-7a28-3924-810f-c04153c831b5
61 lines
1.1 KiB
Dart
61 lines
1.1 KiB
Dart
// Copyright (c) 2012, 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 cyclic reference to type variables in type expressions
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class Base<T> {}
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class Derived extends Base<Derived> {} // legal
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typedef void funcType<T
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extends T /// 01: static type warning
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>(T arg);
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class DerivedFunc extends Base<funcType<DerivedFunc>> { }
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abstract class A<S
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extends S /// 02: static type warning
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> {
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S field;
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}
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abstract class B<U extends Base<U>> { // legal
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U field;
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}
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class C1<V
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extends V /// 03: static type warning
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> {
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V field;
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}
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class C2<V
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extends V /// 04: static type warning
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> implements A<V> {
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V field;
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}
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class D1<W extends Base<W>> { // legal
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W field;
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}
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class D2<W extends Base<W>> implements B<W>{ // legal
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W field;
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}
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class E<X extends Base<funcType<X>>> { // legal
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X field;
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}
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main() {
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new C1<int>();
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new C2<int>();
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new D1<Derived>();
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new D2<Derived>();
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new E<DerivedFunc>();
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funcType<Object> val = null;
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}
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