public T this[int index]
{
get
{
if (index < 0 || index > Count - 1)
{
throw new IndexOutOfRangeException();
}
if (m_PrevSegment != null)
{
if (index >= m_PrevSegment.From && index <= m_PrevSegment.To)
{
return(m_PrevSegment.Segment.Array[m_PrevSegment.Segment.Offset + index - m_PrevSegment.From]);
}
}
for (int i = 0; i < m_Segments.Count; i++)
{
var segment = m_Segments[i];
if (index >= segment.From && index <= segment.To)
{
m_PrevSegment = segment;
return(segment.Segment.Array[segment.Segment.Offset + index - segment.From]);
}
}
throw new IndexOutOfRangeException();
}
set
{
throw new NotSupportedException();
}
}
public void RemoveSegmentAt(int index)
{
var removedSegment = m_Segments[index];
int removedLen = removedSegment.To - removedSegment.From + 1;
m_Segments.RemoveAt(index);
m_PrevSegment = null;
//the removed item is not the the last item
if (index != m_Segments.Count)
{
for (int i = index; i < m_Segments.Count; i++)
{
m_Segments[i].From -= removedLen;
m_Segments[i].To -= removedLen;
}
}
m_Count -= removedLen;
}
public void ClearSegements()
{
m_Segments.Clear();
m_PrevSegment = null;
m_Count = 0;
}