private PersistentQueue <T> AdditionalsOperations()
{
Int32 toDo = 3;
PersistentStack <T> newLeft = Left;
PersistentStack <T> newLeftRecopy = LeftRecopy;
PersistentStack <T> newRight = Right;
PersistentStack <T> newTempRight = TempRight;
Boolean newCopied = Copied;
Int32 newToCopy = ToCopy;
while (!newCopied && toDo > 0 && newRight.Count > 0)
{
T x = newRight.Peek();
newRight = newRight.Pop();
newTempRight = newTempRight.Push(x);
--toDo;
}
while (toDo > 0 && newLeft.Count > 0)
{
newCopied = true;
T x = newLeft.Peek();
newLeft = newLeft.Pop();
newRight = newRight.Push(x);
--toDo;
}
while (toDo > 0 && newTempRight.Count > 0)
{
T x = newTempRight.Peek();
newTempRight = newTempRight.Pop();
if (newToCopy > 0)
{
newRight = newRight.Push(x);
--newToCopy;
}
--toDo;
}
if (newTempRight.Count == 0)
{
PersistentStack <T> temp = newLeft;
newLeft = newLeftRecopy;
newLeftRecopy = temp;
}
return(new PersistentQueue <T>(newLeft, newLeftRecopy, newRight, RightRecopy, newTempRight, IsRecopy, newToCopy, newCopied));
}
public T Peek()
{
if (!recopy)
{
return(R.Peek());
}
else
{
return(Ri.Peek());
}
}
public T Peek()
{
if (!IsRecopy)
{
return(Right.Peek());
}
else
{
return(RightRecopy.Peek());
}
}
private PersistentQueue <T> AdditionalsOperations()
{
Int32 toDo = 3;
PersistentStack <T> Ln = L;
PersistentStack <T> Lni = Li;
PersistentStack <T> Rn = R;
PersistentStack <T> Sn = S;
Boolean curCopied = copied;
Int32 curCopy = toCopy;
while (!curCopied && toDo > 0 && Rn.Count > 0)
{
T x = Rn.Peek();
Rn = Rn.Pop();
Sn = Sn.Push(x);
--toDo;
}
while (toDo > 0 && Ln.Count > 0)
{
curCopied = true;
T x = Ln.Peek();
Ln = Ln.Pop();
Rn = Rn.Push(x);
--toDo;
}
while (toDo > 0 && Sn.Count > 0)
{
T x = Sn.Peek();
Sn = Sn.Pop();
if (curCopy > 0)
{
Rn = Rn.Push(x);
--curCopy;
}
--toDo;
}
if (Sn.Count == 0)
{
PersistentStack <T> t = Ln;
Ln = Lni;
Lni = t;
}
return(new PersistentQueue <T>(Ln, Lni, Rn, Ri, Sn, recopy, curCopy, curCopied));
}
