| // Copyright (c) 2011, 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 = 2.7 |
| |
| import "native_testing.dart"; |
| |
| // Test to see if resolving a hidden native class's method interferes with |
| // subsequent resolving the subclass's method. This might happen if the |
| // superclass caches the method in the prototype, so shadowing the dispatcher |
| // stored on Object.prototype. |
| |
| @Native("A") |
| class A { |
| foo([a = 100]) native; |
| } |
| |
| @Native("B") |
| class B extends A {} |
| |
| @Native("C") |
| class C extends B { |
| foo([z = 300]) native; |
| } |
| |
| @Native("D") |
| class D extends C {} |
| |
| makeA() native; |
| makeB() native; |
| makeC() native; |
| makeD() native; |
| |
| void setup() { |
| JS('', r""" |
| (function(){ |
| // This code is inside 'setup' and so not accessible from the global scope. |
| function inherits(child, parent) { |
| if (child.prototype.__proto__) { |
| child.prototype.__proto__ = parent.prototype; |
| } else { |
| function tmp() {}; |
| tmp.prototype = parent.prototype; |
| child.prototype = new tmp(); |
| child.prototype.constructor = child; |
| } |
| } |
| |
| function A(){} |
| function B(){} |
| inherits(B, A); |
| function C(){} |
| inherits(C, B); |
| function D(){} |
| inherits(D, C); |
| |
| A.prototype.foo = function(a){return 'A.foo(' + a + ')'}; |
| C.prototype.foo = function(z){return 'C.foo(' + z + ')'}; |
| |
| self.makeA = function(){return new A()}; |
| self.makeB = function(){return new B()}; |
| self.makeC = function(){return new C()}; |
| self.makeD = function(){return new D()}; |
| |
| self.nativeConstructor(A); |
| self.nativeConstructor(B); |
| self.nativeConstructor(C); |
| self.nativeConstructor(D); |
| })()"""); |
| applyTestExtensions(['A', 'B', 'C', 'D']); |
| } |
| |
| main() { |
| nativeTesting(); |
| setup(); |
| |
| var a = makeA(); |
| var b = makeB(); |
| var c = makeC(); |
| var d = makeD(); |
| |
| Expect.equals('A.foo(100)', b.foo()); |
| Expect.equals('C.foo(300)', d.foo()); |
| // If the above line fails with C.foo(100) then the dispatch to fill in the |
| // default got the wrong one, followed by a second dispatch that resolved to |
| // the correct native method. |
| |
| Expect.equals('A.foo(1)', a.foo(1)); |
| Expect.equals('A.foo(2)', b.foo(2)); |
| Expect.equals('C.foo(3)', c.foo(3)); |
| Expect.equals('C.foo(4)', d.foo(4)); |
| } |