private NailNumber(NailNumber left, NailNumber right)
{
_left = left;
_right = right;
_left.SetNext(_right.Left());
_right.SetPrevious(_left.Right());
}
private NailNumber(NailNumber other)
{
if (other.IsNumber)
{
_value = other._value;
}
else
{
_left = new NailNumber(other._left);
_right = new NailNumber(other._right);
_left.SetNext(_right.Left());
_right.SetPrevious(_left.Right());
}
}
private NailNumber Left()
{
return(IsNumber ? this : _left.Left());
}