blob: 489502c745909e6807e9728a7c7ab1ead7757168 [file] [log] [blame]
// 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));
}