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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 import "package:expect/expect.dart"; | 5 import "package:expect/expect.dart"; |
6 | 6 |
7 class A<X, Y, Z> { | 7 class A<X, Y, Z> { |
8 shift() => new A<Z, X, Y>(); | 8 shift() => new A<Z, X, Y>(); |
9 swap() => new A<Z, Y, X>(); | 9 swap() => new A<Z, Y, X>(); |
10 first() => new A<X, X, X>(); | 10 first() => new A<X, X, X>(); |
11 last() => new A<Z, Z, Z>(); | 11 last() => new A<Z, Z, Z>(); |
12 wrap() => new A<A<X, X, X>, A<Y, Y, Y>, A<Z, Z, Z>>(); | 12 wrap() => new A<A<X, X, X>, A<Y, Y, Y>, A<Z, Z, Z>>(); |
13 } | 13 } |
14 | 14 |
15 class B extends A<U, V, W> {} | 15 class B extends A<U, V, W> {} |
16 | 16 |
17 class C<T> extends A<U, T, W> {} | 17 class C<T> extends A<U, T, W> {} |
18 | 18 |
19 class D<X, Y, Z> extends A<Y, Z, X> {} | 19 class D<X, Y, Z> extends A<Y, Z, X> {} |
20 | 20 |
21 class U {} | 21 class U {} |
| 22 |
22 class V {} | 23 class V {} |
| 24 |
23 class W {} | 25 class W {} |
24 | 26 |
25 sameType(a, b) => Expect.equals(a.runtimeType, b.runtimeType); | 27 sameType(a, b) => Expect.equals(a.runtimeType, b.runtimeType); |
26 | 28 |
27 main() { | 29 main() { |
28 A a = new A<U, V, W>(); | 30 A a = new A<U, V, W>(); |
29 sameType(new A<W, U, V>(), a.shift()); | 31 sameType(new A<W, U, V>(), a.shift()); |
30 sameType(new A<W, V, U>(), a.swap()); | 32 sameType(new A<W, V, U>(), a.swap()); |
31 sameType(new A<U, U, U>(), a.first()); | 33 sameType(new A<U, U, U>(), a.first()); |
32 sameType(new A<W, W, W>(), a.last()); | 34 sameType(new A<W, W, W>(), a.last()); |
33 sameType(new A<A<U, U, U>, A<V, V, V>, A<W, W, W>>(), a.wrap()); | 35 sameType(new A<A<U, U, U>, A<V, V, V>, A<W, W, W>>(), a.wrap()); |
34 B b = new B(); | 36 B b = new B(); |
35 sameType(new A<A<U, U, U>, A<V, V, V>, A<W, W, W>>(), b.wrap()); | 37 sameType(new A<A<U, U, U>, A<V, V, V>, A<W, W, W>>(), b.wrap()); |
36 C c = new C<V>(); | 38 C c = new C<V>(); |
37 sameType(new A<A<U, U, U>, A<V, V, V>, A<W, W, W>>(), c.wrap()); | 39 sameType(new A<A<U, U, U>, A<V, V, V>, A<W, W, W>>(), c.wrap()); |
38 D d = new D<U, V, W>(); | 40 D d = new D<U, V, W>(); |
39 sameType(new A<A<V, V, V>, A<W, W, W>, A<U, U, U>>(), d.wrap()); | 41 sameType(new A<A<V, V, V>, A<W, W, W>, A<U, U, U>>(), d.wrap()); |
40 } | 42 } |
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