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// 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 test program testing the use of 'dynamic' in generic types.
import "package:expect/expect.dart";
abstract class Iface<K, V> {}
class M1<K, V> implements Iface<K, V> {}
class M2<K> implements Iface<K, dynamic> {}
class M3 implements Iface<String, dynamic> {}
typedef dynamic F1<T>(dynamic x, T y);
class HasFieldDynamic {
HasFieldDynamic() : dynamic = "dynamic" {}
var dynamic; // Field named dynamic is allowed.
class HasMethodDynamic {
dynamic() => "dynamic"; // Method named dynamic is allowed.
main() {
// dynamic is a top-type, equivalent to Object at runtime.
Expect.isTrue(dynamic is Type);
Expect.equals(dynamic, dynamic);
// dynamic is not a subtype of num or String.
M1<dynamic, dynamic> m1 = new M1<dynamic, dynamic>();
Expect.isFalse(m1 is Iface<dynamic, num>);
Expect.isFalse(m1 is Iface<String, dynamic>);
Expect.isFalse(m1 is Iface<String, num>);
Expect.isFalse(m1 is Iface<num, String>);
M2<dynamic> m2 = new M2<dynamic>(); // is Iface<dynamic, dynamic>.
Expect.isFalse(m2 is Iface<dynamic, num>);
Expect.isFalse(m2 is Iface<String, dynamic>);
Expect.isFalse(m2 is Iface<String, num>);
Expect.isFalse(m2 is Iface<num, String>);
M3 m3 = new M3(); // is IFace<String, dynamic>.
Expect.isFalse(m3 is Iface<dynamic, num>);
Expect.isTrue(m3 is Iface<String, dynamic>);
Expect.isFalse(m3 is Iface<String, num>);
Expect.isTrue(m3 is! Iface<num, String>);
F1<int> f1 = (dynamic s, int i) => s[i]; // is dynamic Function(dynamic, int).
Expect.isTrue(f1 is F1<int>);
// "dynamic" is not a reserved word or built-in identifier.
HasFieldDynamic has_field = new HasFieldDynamic();
Expect.equals("dynamic", has_field.dynamic);
HasMethodDynamic has_method = new HasMethodDynamic();
Expect.equals("dynamic", has_method.dynamic());
int dynamic = 0; // Local variable named dynamic is allowed.
Expect.equals(0, dynamic);