public static void LoadVariable(mdr.DObject context, int fieldId, int ancestorDistance, ref Stack stack)
{
mdr.PropertyDescriptor pd = null;
//TODO: If we do not create a prototype for GlobalContext, the following code would have been enough!
//var pd = context.GetPropertyDescriptorByLineId(fieldId);
//pd.Get(context, ref stack.Items[stack.Sp++]);
if (ancestorDistance < 0)
{//We are dealing with unknown symbol type
while (context != mdr.Runtime.Instance.GlobalContext)
{
pd = context.Map.GetPropertyDescriptorByFieldId(fieldId);
if (pd != null)
{
break;
}
context = context.Prototype;
}
}
else
{//we are dealing with known symbol type
for (var i = 0; i < ancestorDistance && context != mdr.Runtime.Instance.GlobalContext; ++i)
{
context = context.Prototype;
}
}
if (pd == null)
{
pd = context.GetPropertyDescriptorByFieldId(fieldId);
}
pd.Get(context, ref stack.Items[stack.Sp++]);
}
public DForwardingProperty(DObject receiver, string field)
{
Receiver = receiver;
ReceiverPD = Receiver.Map.GetPropertyDescriptor(field);
Debug.Assert(ReceiverPD != null, "receiver field has null descriptor: " + field);
OnGetDValue = (DObject This, ref DValue v) =>
{
ReceiverPD.Get(Receiver, ref v);
};
OnSetDValue = (DObject This, ref DValue v) =>
{
ReceiverPD.Set(Receiver, ref v);
};
}
public DForwardingProperty (DObject receiver, string field)
{
Receiver = receiver;
ReceiverPD = Receiver.Map.GetPropertyDescriptor(field);
Debug.Assert(ReceiverPD != null, "receiver field has null descriptor: " + field);
OnGetDValue = (DObject This, ref DValue v) =>
{
ReceiverPD.Get(Receiver, ref v);
};
OnSetDValue = (DObject This, ref DValue v) =>
{
ReceiverPD.Set(Receiver, ref v);
};
}