public static EcmaValue IsPrototypeOf([This] EcmaValue thisValue, EcmaValue obj)
{
Guard.RequireObjectCoercible(thisValue);
if (obj.Type != EcmaValueType.Object)
{
return(false);
}
RuntimeObject thisObj = thisValue.ToObject();
for (RuntimeObject v = obj.ToObject(); v != null; v = v.GetPrototypeOf())
{
if (v == thisObj)
{
return(true);
}
}
return(false);
}
public void ObjectHosting()
{
It("should return different instances on different execution thread", () => {
TestObject obj = new TestObject();
RuntimeObject v0 = RuntimeRealm.Current.ResolveRuntimeObject(obj);
RuntimeExecution.CreateWorkerThread(parentRealm => {
Assume.That(parentRealm, Is.Not.EqualTo(RuntimeRealm.Current), "realm should be different");
RuntimeObject v1 = RuntimeRealm.Current.ResolveRuntimeObject(obj);
That(v0 != v1, "returned object should be different");
That(v0.Realm, Is.EqualTo(parentRealm));
That(v1.Realm, Is.EqualTo(RuntimeRealm.Current));
That(v0.GetPrototypeOf() != v1.GetPrototypeOf(), "the prototype of returned object should be different");
That(v0.GetPrototypeOf().Realm, Is.EqualTo(parentRealm));
That(v1.GetPrototypeOf().Realm, Is.EqualTo(RuntimeRealm.Current));
That(v0.GetPrototypeOf().GetPrototypeOf() != v1.GetPrototypeOf().GetPrototypeOf(), "all prototype ancestors of returned object should be different");
That(v0["MyMethod"], Is.TypeOf("function"));
That(v0["MyMethod"], Is.Not.EqualTo(v1["MyMethod"]), "property value of object type should be different");
}, true).Thread.Join();
});
It("should return different instances on different realm of the same execution thread", () => {
TestObject obj = new TestObject();
RuntimeObject v0 = RuntimeRealm.Current.ResolveRuntimeObject(obj);
RuntimeRealm parentRealm = RuntimeRealm.Current;
RuntimeRealm other = new RuntimeRealm();
other.Enqueue(() => {
Assume.That(RuntimeRealm.Current, Is.Not.EqualTo(parentRealm), "realm should be different");
Assume.That(RuntimeRealm.Current, Is.EqualTo(other));
RuntimeObject v1 = RuntimeRealm.Current.ResolveRuntimeObject(obj);
That(v0 != v1, "returned object should be different");
That(v0.Realm, Is.EqualTo(parentRealm));
That(v1.Realm, Is.EqualTo(RuntimeRealm.Current));
That(v0.GetPrototypeOf() != v1.GetPrototypeOf(), "the prototype of returned object should be different");
That(v0.GetPrototypeOf().Realm, Is.EqualTo(parentRealm));
That(v1.GetPrototypeOf().Realm, Is.EqualTo(RuntimeRealm.Current));
That(v0.GetPrototypeOf().GetPrototypeOf() != v1.GetPrototypeOf().GetPrototypeOf(), "all prototype ancestors of returned object should be different");
That(v0["MyMethod"], Is.TypeOf("function"));
That(v0["MyMethod"], Is.Not.EqualTo(v1["MyMethod"]), "property value of object type should be different");
});
RuntimeExecution.ContinueUntilEnd();
});
It("should expose native properties as getters and setters on protoype", () => {
TestObject obj = new TestObject();
EcmaValue value = new EcmaValue(obj);
value["Value"] = 1;
That(value["Value"], Is.EqualTo(1));
That(obj.Value, Is.EqualTo(1), "Value should be reflected on native object");
That(() => value["ReadOnlyValue"] = 2, Throws.Nothing, "Setting a readonly property does not throw exception");
That(value["ReadOnlyValue"], Is.EqualTo(1), "Value should not be changed");
RuntimeObject testObjectPrototype = value.ToObject().GetPrototypeOf();
That(testObjectPrototype.GetOwnProperty("Value"), Is.Not.EqualTo(EcmaValue.Undefined), "Property should be defined on the reflected prototype object");
That(testObjectPrototype.GetOwnProperty("Value").Get, Is.Not.EqualTo(EcmaValue.Undefined), "Property should be defined as getter/setter");
That(testObjectPrototype.GetOwnProperty("ReadOnlyValue").Set, Is.Undefined, "Readonly property should have no setter");
});
It("should expose IList as an Array exotic object", () => {
EcmaValue list = new EcmaValue(new List <object> {
1, 2, 3, new EcmaObject()
});
That(list["length"], Is.EqualTo(4));
That(list.ToString(), Is.EqualTo("1,2,3,[object Object]"));
That(Global.Json.Invoke("stringify", list), Is.EqualTo("[1,2,3,{}]"));
});
It("should expose IDictionary as an ordinary object for valid EcmaPropertyKey", () => {
Hashtable ht = new Hashtable();
EcmaValue obj = new EcmaValue(ht);
obj["prop"] = 1;
That(obj["prop"], Is.EqualTo(1));
That(Global.Json.Invoke("stringify", obj), Is.EqualTo("{\"prop\":1}"));
});
}
public InspectorMetaObject(RuntimeObject obj)
{
Guard.ArgumentNotNull(obj, "obj");
this.EnumerableProperties = new InspectorMetaObjectEntryCollection();
this.NonEnumerableProperties = new InspectorMetaObjectEntryCollection();
if (!(obj is RuntimeObjectProxy))
{
this.Prototype = new EcmaValue(obj.GetPrototypeOf());
if (this.Prototype.IsNullOrUndefined)
{
this.Prototype = EcmaValue.Null;
}
for (RuntimeObject cur = obj; cur != null; cur = cur.GetPrototypeOf())
{
foreach (EcmaPropertyKey property in cur.GetOwnPropertyKeys())
{
EcmaPropertyDescriptor descriptor = cur.GetOwnProperty(property);
if (descriptor == null || (descriptor.IsDataDescriptor && cur != obj))
{
continue;
}
EcmaValue value;
if (descriptor.IsDataDescriptor)
{
value = descriptor.Value;
}
else
{
try {
value = descriptor.Get.Call(obj);
} catch (EcmaException ex) {
value = String.Format("{0}: {1}", ex.ErrorType, ex.Message);
} catch (Exception ex) {
value = ex.Message;
}
if (cur == obj)
{
if (descriptor.Get)
{
NonEnumerableProperties.Add("get " + property, descriptor.Get);
}
if (descriptor.Set)
{
NonEnumerableProperties.Add("set " + property, descriptor.Get);
}
}
}
if (descriptor.Enumerable)
{
EnumerableProperties.Add(property, value);
}
else
{
NonEnumerableProperties.Add(property, value);
}
}
}
}
if (obj is IInspectorMetaProvider provider)
{
try {
provider.FillInInspectorMetaObject(this);
} catch { }
}
}