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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, 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 // Test for downcasts on native classes. | 5 // Test for downcasts on native classes. |
6 | 6 |
7 import "dart:_js_helper"; | 7 import "dart:_js_helper"; |
8 import "package:expect/expect.dart"; | 8 import "package:expect/expect.dart"; |
9 | 9 |
10 abstract class J { | 10 abstract class J {} |
11 } | |
12 | 11 |
13 abstract class I extends J { | 12 abstract class I extends J { |
14 I read(); | 13 I read(); |
15 write(I x); | 14 write(I x); |
16 } | 15 } |
17 | 16 |
18 // Native implementation. | 17 // Native implementation. |
19 | 18 |
20 @Native("A") | 19 @Native("A") |
21 class A implements I { | 20 class A implements I { |
22 // The native class accepts only other native instances. | 21 // The native class accepts only other native instances. |
23 A read() native; | 22 A read() native ; |
24 write(A x) native; | 23 write(A x) native ; |
25 } | 24 } |
26 | 25 |
27 @Native("B") | 26 @Native("B") |
28 class B extends A { | 27 class B extends A {} |
29 } | |
30 | 28 |
31 makeA() native; | 29 makeA() native ; |
32 makeB() native; | 30 makeB() native ; |
33 | 31 |
34 void setup() native """ | 32 void setup() native """ |
35 // This code is all inside 'setup' and so not accesible from the global scope. | 33 // This code is all inside 'setup' and so not accesible from the global scope. |
36 function inherits(child, parent) { | 34 function inherits(child, parent) { |
37 if (child.prototype.__proto__) { | 35 if (child.prototype.__proto__) { |
38 child.prototype.__proto__ = parent.prototype; | 36 child.prototype.__proto__ = parent.prototype; |
39 } else { | 37 } else { |
40 function tmp() {}; | 38 function tmp() {}; |
41 tmp.prototype = parent.prototype; | 39 tmp.prototype = parent.prototype; |
42 child.prototype = new tmp(); | 40 child.prototype = new tmp(); |
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74 Expect.equals(b1, b1 as I); | 72 Expect.equals(b1, b1 as I); |
75 Expect.equals(b1, b1 as A); | 73 Expect.equals(b1, b1 as A); |
76 Expect.equals(b1, b1 as B); | 74 Expect.equals(b1, b1 as B); |
77 | 75 |
78 Expect.equals(a1, a1 as J); | 76 Expect.equals(a1, a1 as J); |
79 Expect.equals(a1, a1 as I); | 77 Expect.equals(a1, a1 as I); |
80 Expect.equals(a1, a1 as A); | 78 Expect.equals(a1, a1 as A); |
81 Expect.throws(() => a1 as B); | 79 Expect.throws(() => a1 as B); |
82 Expect.throws(() => a1 as C); | 80 Expect.throws(() => a1 as C); |
83 } | 81 } |
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