/// <summary>
/// Gets or sets an item to the DArray.
/// </summary>
/// <param name="index">Index of the item.</param>
/// <returns>Item at the given index.</returns>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="index"/> is not a valid index. Use
/// <see cref="CanGet"/> to make sure the index is valid.</exception>
public T this[int index]
{
get
{
// Check for if out of range
if (index > _highestIndex || index < 0)
{
throw new ArgumentOutOfRangeException("index");
}
// Return the item at the index
return(_buffer[index]);
}
set
{
// Check if desired value exceeds the current buffer size - if so, resize
if (index >= _buffer.Length)
{
ResizeBuffer(Math.Max(_buffer.Length * 2, index + 1));
}
// If greater than the highest index, update the new highest index
if (index > _highestIndex)
{
if (_trackFree)
{
// Since we created a new value of the last highest value, we will
// need to push all indices skipped into the stack of free indices
for (var i = _highestIndex + 1; i < index; i++)
{
_freeIndices.Push(i);
}
}
_highestIndex = index;
}
// Set the item and increase the version
_isIndexUsed[index] = true;
_buffer[index] = value;
_version++;
// Notify any listeners an item has been added
OnItemAdded(value, index);
if (ItemAdded != null)
{
ItemAdded.Raise(this, new DArrayEventArgs <T>(value, index));
}
}
}
/// <summary>
/// Raises the ItemAdded event</summary>
/// <param name="e">Event args</param>
protected virtual void OnItemAdded(ItemInsertedEventArgs <T> e)
{
ItemAdded.Raise(this, e);
}