internal void ToString(StringBuilder sb, int depth)
{
indent(sb, depth);
if (left == null)
{
Debug.Assert(right == null);
sb.Append("leaf: " + start + " to " + end);
}
else
{
sb.Append("node: " + start + " to " + end);
}
if (outputs != null)
{
sb.Append(" outputs=");
sb.Append(outputs);
}
sb.Append('\n');
if (left != null)
{
Debug.Assert(right != null);
left.ToString(sb, depth + 1);
right.ToString(sb, depth + 1);
}
}
