public object SystemVectorRef(int index)
{
ISystemVector firstVec = ((ISystemVector)first);
int firstSize = firstVec.SystemVectorSize;
return((index < firstSize) ? firstVec.SystemVectorRef(index)
: (rest == null) ? Fakeup(index)
: rest.SystemVectorRef(index - firstSize)
);
}
public static bool SystemVectorRef(out object answer, object arg, object offset)
{
ISystemVector sysVec = arg as ISystemVector;
if (sysVec != null)
{
answer = sysVec.SystemVectorRef((int)offset);
}
else
{
throw new NotImplementedException();
}
return(false);
}
public static bool SystemSubvectorToList(out object answer, object arg, object start, object end)
{
ISystemVector sysVec = arg as ISystemVector;
if (sysVec != null)
{
Cons result = null;
for (int i = (int)end - 1; i > ((int)start - 1); i--)
{
result = new Cons(sysVec.SystemVectorRef(i), result);
}
answer = result;
return(false);
}
else
{
throw new NotImplementedException();
}
}