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| 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 | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 // Test to see if resolving a hidden native class's method interferes with | |
| 6 // subsequent resolving the subclass's method. This might happen if the | |
| 7 // superclass caches the method in the prototype, so shadowing the dispatcher | |
| 8 // stored on Object.prototype. | |
| 9 | |
| 10 // Version 1: It might be possible to call foo directly. | |
| 11 class A1 native "*A1" { | |
| 12 foo() native; | |
| 13 } | |
| 14 | |
| 15 class B1 extends A1 native "*B1" { | |
| 16 foo() native; | |
| 17 } | |
| 18 | |
| 19 makeA1() native; | |
| 20 makeB1() native; | |
| 21 | |
| 22 | |
| 23 // Version 2: foo needs some kind of trampoline. | |
| 24 class A2 native "*A2" { | |
| 25 foo([a=99]) native; | |
| 26 } | |
| 27 | |
| 28 class B2 extends A2 native "*B2" { | |
| 29 foo([z=1000]) native; | |
| 30 } | |
| 31 | |
| 32 makeA2() native; | |
| 33 makeB2() native; | |
| 34 | |
| 35 void setup() native """ | |
| 36 // This code is all inside 'setup' and so not accesible from the global scope. | |
| 37 function inherits(child, parent) { | |
| 38 if (child.prototype.__proto__) { | |
| 39 child.prototype.__proto__ = parent.prototype; | |
| 40 } else { | |
| 41 function tmp() {}; | |
| 42 tmp.prototype = parent.prototype; | |
| 43 child.prototype = new tmp(); | |
| 44 child.prototype.constructor = child; | |
| 45 } | |
| 46 } | |
| 47 function A1(){} | |
| 48 function B1(){} | |
| 49 inherits(B1, A1); | |
| 50 A1.prototype.foo = function(){return 100;} | |
| 51 B1.prototype.foo = function(){return 200;} | |
| 52 | |
| 53 makeA1 = function(){return new A1}; | |
| 54 makeB1 = function(){return new B1}; | |
| 55 | |
| 56 function A2(){} | |
| 57 function B2(){} | |
| 58 inherits(B2, A2); | |
| 59 A2.prototype.foo = function(a){return a + 10000;} | |
| 60 B2.prototype.foo = function(z){return z + 20000;} | |
| 61 | |
| 62 makeA2 = function(){return new A2}; | |
| 63 makeB2 = function(){return new B2}; | |
| 64 """; | |
| 65 | |
| 66 | |
| 67 main() { | |
| 68 setup(); | |
| 69 | |
| 70 var a1 = makeA1(); | |
| 71 var b1 = makeB1(); | |
| 72 Expect.equals(100, a1.foo()); | |
| 73 Expect.equals(200, b1.foo()); | |
| 74 | |
| 75 var a2 = makeA2(); | |
| 76 var b2 = makeB2(); | |
| 77 Expect.equals(10000 + 99, a2.foo()); | |
| 78 Expect.equals(20000 + 1000, b2.foo()); | |
| 79 | |
| 80 Expect.equals(10000 + 1, a2.foo(1)); | |
| 81 Expect.equals(20000 + 2, b2.foo(2)); | |
| 82 | |
| 83 bool caught = false; | |
| 84 try { | |
| 85 a1.foo(20); | |
| 86 } catch (var ex) { | |
| 87 caught = true; | |
| 88 Expect.isTrue(ex is NoSuchMethodException); | |
| 89 } | |
| 90 Expect.isTrue(caught, 'a1.foo(20) should throw'); | |
| 91 | |
| 92 caught = false; | |
| 93 try { | |
| 94 var x = 123; | |
| 95 x.foo(20); | |
| 96 } catch (var ex) { | |
| 97 caught = true; | |
| 98 Expect.isTrue(ex is NoSuchMethodException); | |
| 99 } | |
| 100 Expect.isTrue(caught, "x.foo(20) should throw"); | |
| 101 } | |
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