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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 class A native "*A" { | |
| 11 foo([a=100]) native; | |
| 12 } | |
| 13 | |
| 14 class B extends A native "*B" { | |
| 15 } | |
| 16 | |
| 17 class C extends B native "*C" { | |
| 18 foo([z=300]) native; | |
| 19 } | |
| 20 | |
| 21 class D extends C native "*D" { | |
| 22 } | |
| 23 | |
| 24 makeA() native; | |
| 25 makeB() native; | |
| 26 makeC() native; | |
| 27 makeD() native; | |
| 28 | |
| 29 void setup() native """ | |
| 30 // This code is all inside 'setup' and so not accesible from the global scope. | |
| 31 function inherits(child, parent) { | |
| 32 if (child.prototype.__proto__) { | |
| 33 child.prototype.__proto__ = parent.prototype; | |
| 34 } else { | |
| 35 function tmp() {}; | |
| 36 tmp.prototype = parent.prototype; | |
| 37 child.prototype = new tmp(); | |
| 38 child.prototype.constructor = child; | |
| 39 } | |
| 40 } | |
| 41 | |
| 42 function A(){} | |
| 43 function B(){} | |
| 44 inherits(B, A); | |
| 45 function C(){} | |
| 46 inherits(C, B); | |
| 47 function D(){} | |
| 48 inherits(D, C); | |
| 49 | |
| 50 A.prototype.foo = function(a){return 'A.foo(' + a + ')';} | |
| 51 C.prototype.foo = function(z){return 'C.foo(' + z + ')';} | |
| 52 | |
| 53 makeA = function(){return new A}; | |
| 54 makeB = function(){return new B}; | |
| 55 makeC = function(){return new C}; | |
| 56 makeD = function(){return new D}; | |
| 57 """; | |
| 58 | |
| 59 | |
| 60 main() { | |
| 61 setup(); | |
| 62 | |
| 63 var a = makeA(); | |
| 64 var b = makeB(); | |
| 65 var c = makeC(); | |
| 66 var d = makeD(); | |
| 67 | |
| 68 Expect.equals('A.foo(100)', b.foo()); | |
| 69 Expect.equals('C.foo(300)', d.foo()); | |
| 70 // If the above line fails with C.foo(100) then the dispatch to fill in the | |
| 71 // default got the wrong one, followed by a second dispatch that resolved to | |
| 72 // the correct native method. | |
| 73 | |
| 74 Expect.equals('A.foo(1)', a.foo(1)); | |
| 75 Expect.equals('A.foo(2)', b.foo(2)); | |
| 76 Expect.equals('C.foo(3)', c.foo(3)); | |
| 77 Expect.equals('C.foo(4)', d.foo(4)); | |
| 78 } | |
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