/// <summary>
/// Enqueue
/// </summary>
protected internal void Enqueue(T value)
{
EventHandler <SlidingWindowChangedEventArgs <T> > changed = Changed;
Optional <T> currentPrevious = m_Buffer.Count > 0
? new Optional <T>(Current)
: new Optional <T>();
bool wasCompleted = IsCompleted;
Optional <T> itemRemoved;
if (m_Buffer.Count < m_Buffer.Capacity)
{
m_Buffer.Add(value);
itemRemoved = new Optional <T>();
}
else
{
itemRemoved = new Optional <T>(m_Buffer[m_InsertIndex]);
m_Buffer[m_InsertIndex] = value;
}
m_InsertIndex = (m_InsertIndex + 1) % m_Buffer.Capacity;
if (changed != null)
{
SlidingWindowChangedEventArgs <T> args = new SlidingWindowChangedEventArgs <T>(
this,
new Optional <T>(Current),
currentPrevious,
new Optional <T>(value),
itemRemoved,
IsCompleted,
wasCompleted
);
changed(this, args);
}
}
/// <summary>
/// Dequeue if possible
/// </summary>
protected internal bool Dequeue()
{
if (AfterCount <= 0)
{
return(false);
}
bool wasCompleted = IsCompleted;
Optional <T> currentPrevious = m_Buffer.Count > 0
? new Optional <T>(Current)
: new Optional <T>();
Optional <T> itemRemoved = new Optional <T>(this[-BeforeCount]);
m_Deleted += 1;
EventHandler <SlidingWindowChangedEventArgs <T> > changed = Changed;
if (changed != null)
{
SlidingWindowChangedEventArgs <T> args = new SlidingWindowChangedEventArgs <T>(
this,
new Optional <T>(Current),
currentPrevious,
new Optional <T>(),
itemRemoved,
IsCompleted,
wasCompleted
);
changed(this, args);
}
return(true);
}