private void AddChildren(TreeNode node, int maxDepth)
{
for (int i = 0; i < node.ChildTypes.Length; i++)
{
Type type = node.ChildTypes[i];
TreeNode child;
do
{
var filter = node.GetChildSelectionFilter(i);
if (maxDepth <= 1)
{
child = SelectTerminalNode(type, filter);
}
else
{
child = SelectNonTerminalNode(type, Math.Max(1, maxDepth), filter);
}
if (child == null) // no valid child found due to filtering
{
child = SelectAnyNode(type, Math.Max(1, maxDepth), filter);
}
if (maxDepth == 0 && child.ChildTypes.Length > 0) // array index must be a single terminal if already on max depth
{
continue;
}
if (node.AcceptChild(child, i))
{
break;
}
} while (true);
node.AddChild(child);
AddChildren(child, maxDepth - 1);
}
}