public override bool Set(EcmaPropertyKey propertyKey, EcmaValue value, RuntimeObject receiver)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.Set);
if (trap == null)
{
return(target.Set(propertyKey, value, receiver));
}
if (!(bool)trap.Call(handler, target, propertyKey.ToValue(), value, receiver))
{
return(false);
}
EcmaPropertyDescriptor descriptor = target.GetOwnProperty(propertyKey);
if (descriptor != null && !descriptor.Configurable)
{
if (descriptor.IsDataDescriptor && !descriptor.Writable && !descriptor.Value.Equals(value, EcmaValueComparison.SameValue))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
if (descriptor.IsAccessorDescriptor && descriptor.Set == default)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
}
return(true);
}
public override bool Delete(EcmaPropertyKey propertyKey)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.DeleteProperty);
if (trap == null)
{
return(target.Delete(propertyKey));
}
if (!(bool)trap.Call(handler, target, propertyKey.ToValue()))
{
return(false);
}
EcmaPropertyDescriptor descriptor = target.GetOwnProperty(propertyKey);
if (descriptor == null)
{
return(true);
}
if (!descriptor.Configurable)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
return(true);
}
public override EcmaPropertyDescriptor GetOwnProperty(EcmaPropertyKey propertyKey)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject method = handler.GetMethod(WellKnownProperty.GetOwnPropertyDescriptor);
EcmaPropertyDescriptor targetDesc = target.GetOwnProperty(propertyKey);
if (method != null)
{
EcmaValue result = method.Call(handler, target, propertyKey.ToValue());
if (result.Type == EcmaValueType.Undefined)
{
if (targetDesc != null && (!targetDesc.Configurable || !target.IsExtensible))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
return(null);
}
EcmaPropertyDescriptor resultDesc = EcmaPropertyDescriptor.FromValue(result);
resultDesc.CompleteDescriptor();
if (!EcmaPropertyDescriptor.ValidateAndApplyPropertyDescriptor(ref resultDesc, targetDesc, !target.IsExtensible) ||
resultDesc.Configurable == false && (targetDesc == null || targetDesc.Configurable == true))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
return(resultDesc);
}
return(targetDesc);
}
public override bool HasProperty(EcmaPropertyKey propertyKey)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.Has);
if (trap == null)
{
return(target.HasProperty(propertyKey));
}
bool result = (bool)trap.Call(handler, target, propertyKey.ToValue());
if (!result)
{
EcmaPropertyDescriptor descriptor = target.GetOwnProperty(propertyKey);
if (descriptor != null && !descriptor.Configurable)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
if (!target.IsExtensible)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
}
return(result);
}
public override RuntimeObject GetPrototypeOf()
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.GetPrototypeOf);
if (trap == null)
{
return(target.GetPrototypeOf());
}
EcmaValue handlerProto = trap.Call(handler, target);
if (handlerProto.Type != EcmaValueType.Object && handlerProto.Type != EcmaValueType.Null)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
if (target.IsExtensible)
{
return(handlerProto.ToObject());
}
if (!handlerProto.Equals(target.GetPrototypeOf()))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
return(handlerProto.ToObject());
}
public EcmaValue Invoke(EcmaPropertyKey propertyKey, params EcmaValue[] arguments)
{
RuntimeObject method = homeObject.GetPrototypeOf().GetMethod(propertyKey);
if (method == null)
{
throw new EcmaTypeErrorException(InternalString.Error.NotFunction);
}
return(method.Call(invocation.ThisValue, arguments));
}
public override EcmaValue Call(EcmaValue thisValue, params EcmaValue[] arguments)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.Apply);
if (trap == null)
{
return(target.Call(thisValue, arguments));
}
return(trap.Call(handler, target, thisValue, new EcmaArray(arguments)));
}
public static EcmaIteratorEnumerator GetIterator(this RuntimeObject obj)
{
Guard.ArgumentNotNull(obj, "obj");
RuntimeObject method = obj.GetMethod(Symbol.Iterator);
if (method == null)
{
throw new EcmaTypeErrorException(InternalString.Error.NotIterable);
}
EcmaValue iterator = method.Call(obj);
Guard.ArgumentIsObject(iterator);
return(new EcmaIteratorEnumerator(iterator));
}
public static StatefulIterator GetAsyncIterator(this RuntimeObject obj)
{
Guard.ArgumentNotNull(obj, "obj");
RuntimeObject method = obj.GetMethod(Symbol.AsyncIterator);
if (method == null)
{
EcmaIteratorEnumerator syncIterator = GetIterator(obj);
return(new AsyncFromSyncIterator(syncIterator));
}
EcmaValue iterator = method.Call(obj);
Guard.ArgumentIsObject(iterator);
return(iterator.GetUnderlyingObject <AsyncGenerator>());
}
private bool GetIsExtensible()
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.IsExtensible);
bool isExtensible = target.IsExtensible;
if (trap == null)
{
return(isExtensible);
}
if ((bool)trap.Call(handler, target) != isExtensible)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
return(isExtensible);
}
public override EcmaValue Construct(EcmaValue[] arguments, RuntimeObject newTarget)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.Construct);
if (trap == null)
{
return(target.Construct(arguments, newTarget));
}
EcmaValue returnValue = trap.Call(handler, target, new EcmaArray(arguments), newTarget);
if (returnValue.Type != EcmaValueType.Object)
{
throw new EcmaTypeErrorException(InternalString.Error.NotObject);
}
return(returnValue);
}
public override bool PreventExtensions()
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.PreventExtensions);
if (trap == null)
{
return(target.PreventExtensions());
}
if ((bool)trap.Call(handler, target))
{
if (target.IsExtensible)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
return(true);
}
return(false);
}
public override bool SetPrototypeOf(RuntimeObject proto)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.SetPrototypeOf);
if (trap == null)
{
return(target.SetPrototypeOf(proto));
}
if (!(bool)trap.Call(handler, target, proto))
{
return(false);
}
if (target.IsExtensible)
{
return(true);
}
if (!proto.Equals(target.GetPrototypeOf()))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
return(true);
}
public override bool DefineOwnProperty(EcmaPropertyKey propertyKey, EcmaPropertyDescriptor descriptor)
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.DefineProperty);
if (trap == null)
{
return(target.DefineOwnProperty(propertyKey, descriptor));
}
if (!(bool)trap.Call(handler, target, propertyKey.ToValue(), descriptor.ToValue()))
{
return(false);
}
bool settingUnconfigurable = descriptor.Configurable == false;
EcmaPropertyDescriptor current = target.GetOwnProperty(propertyKey);
if (current == null)
{
if (!target.IsExtensible || settingUnconfigurable)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
}
else
{
if (!EcmaPropertyDescriptor.ValidateAndApplyPropertyDescriptor(ref descriptor, current, !target.IsExtensible))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
if (settingUnconfigurable && current.Configurable)
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
}
return(true);
}
public override IEnumerable <EcmaPropertyKey> GetOwnPropertyKeys()
{
RuntimeObject target = ThrowIfProxyRevoked();
RuntimeObject trap = handler.GetMethod(WellKnownProperty.OwnKeys);
if (trap == null)
{
return(target.GetOwnPropertyKeys());
}
EcmaValue resultArray = trap.Call(handler, target);
Guard.ArgumentIsObject(resultArray);
List <EcmaPropertyKey> list = new List <EcmaPropertyKey>();
long len = resultArray[WellKnownProperty.Length].ToLength();
for (long i = 0; i < len; i++)
{
EcmaValue value = resultArray[i];
if (!EcmaPropertyKey.IsPropertyKey(value))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
EcmaPropertyKey key = EcmaPropertyKey.FromValue(value);
if (list.Contains(key))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
list.Add(key);
}
List <EcmaPropertyKey> targetKeys = new List <EcmaPropertyKey>(target.GetOwnPropertyKeys());
List <EcmaPropertyKey> targetConfigurableKeys = new List <EcmaPropertyKey>();
List <EcmaPropertyKey> targetNonConfigurableKeys = new List <EcmaPropertyKey>();
foreach (EcmaPropertyKey key in targetKeys)
{
EcmaPropertyDescriptor descriptor = target.GetOwnProperty(key);
(descriptor.Configurable != false ? targetConfigurableKeys : targetNonConfigurableKeys).Add(key);
}
if (target.IsExtensible && targetNonConfigurableKeys.Count == 0)
{
return(list);
}
if (!targetNonConfigurableKeys.TrueForAll(list.Contains))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
if (target.IsExtensible)
{
return(list);
}
if (!targetConfigurableKeys.TrueForAll(list.Contains))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
if (!list.TrueForAll(targetKeys.Contains))
{
throw new EcmaTypeErrorException(InternalString.Error.InvalidTrapResult);
}
return(list);
}
