private Node SwitchNodeProp(int index, Node value = null)
{
switch (index)
{
case 0:
return ReturnNodeProp(ref _up, value);
case 1:
return ReturnNodeProp(ref _right, value);
case 2:
return ReturnNodeProp(ref _down, value);
case 3:
return ReturnNodeProp(ref _left, value);
}
return null;
}
public ParentInfo(Node parent, int index)
{
_parent = parent;
_index = index;
}
private Node ReturnNodeProp(ref Node prop, Node value = null)
{
if (value == null)
{
return prop;
}
else
{
prop = value;
return null;
}
}
