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4532c99730
Change-Id: I388f58eb918110494d70eeb34f1dae68184195ee Reviewed-on: https://dart-review.googlesource.com/35840 Commit-Queue: Jenny Messerly <jmesserly@google.com> Reviewed-by: Vijay Menon <vsm@google.com>
91 lines
2.5 KiB
Dart
91 lines
2.5 KiB
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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import "package:expect/expect.dart";
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class A {}
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abstract class B<T> {
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// x will be marked genericCovariantInterface, since x's type is covariant in
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// the type parameter T.
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void set s2(T x);
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// x will be marked genericCovariantInterface, since x's type is covariant in
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// the type parameter T.
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void set s3(T x);
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void set s4(Object x);
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void set s5(Object x) {
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s4 = x;
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}
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}
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class C extends B<A> {
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void set s1(A x) {}
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// x will be marked genericCovariantImpl, since it might be called via
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// e.g. B<Object>.
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void set s2(A x) {}
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// x will be marked genericCovariantImpl, since it might be called via
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// e.g. B<Object>.
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void set s3(covariant A x) {}
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void set s4(covariant A x) {}
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}
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main() {
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// Dynamic method calls should always have their arguments type checked.
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dynamic d = new C();
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Expect.throwsTypeError(() => d.s1 = new Object()); //# 01: ok
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// Interface calls should have any arguments marked "genericCovariantImpl"
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// type checked provided that the corresponding argument on the interface
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// target is marked "genericCovariantInterface".
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B<Object> b = new C();
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Expect.throwsTypeError(() => b.s2 = new Object()); //# 02: ok
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// Interface calls should have any arguments marked "covariant" type checked,
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// regardless of whether the corresponding argument on the interface target is
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// marked "genericCovariantInterface".
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Expect.throwsTypeError(() => b.s3 = new Object()); //# 03: ok
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Expect.throwsTypeError(() => b.s4 = new Object()); //# 04: ok
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// This calls should have any arguments marked "covariant" type checked.
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Expect.throwsTypeError(() => b.s5 = new Object()); //# 05: ok
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testMixin(); //# 06: ok
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}
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abstract class D<T> {
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void set m1(T x);
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}
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class E {
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void set m1(A x) {}
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}
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class F = Object with E implements D<A>;
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class G = C with E implements D<A>;
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class H extends Object with E implements D<A> {}
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class I extends Object with F {}
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void testMixin() {
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D<Object> f = new F();
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f.m1 = new A();
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Expect.throwsTypeError(() => f.m1 = new Object());
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f = new G();
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f.m1 = new A();
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Expect.throwsTypeError(() => f.m1 = new Object());
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f = new H();
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f.m1 = new A();
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Expect.throwsTypeError(() => f.m1 = new Object());
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f = new I();
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f.m1 = new A();
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Expect.throwsTypeError(() => f.m1 = new Object());
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}
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