internal void DeleteSnapshot(int ssid)
{
int index = ValidSSID.BinarySearch(ssid);
Assert.IsTrue(index >= 0 && index < ValidSSID.Count);
ValidSSID.RemoveAt(index);
}
// Get a valid snapshot id enumerator, the first call to prevSSID() returns ssid
internal SSIDEnumerator GetSSIDEnumerator(int ssid)
{
int index = ValidSSID.BinarySearch(ssid);
if (index < 0)
{
return(null);
}
return(new SSIDEnumerator(ValidSSID, index));
}
internal int?NextSnapshot(int ssid)
{
int index = ValidSSID.BinarySearch(ssid);
if (index < 0)
{
index = ~index;
}
else
{
index += 1;
}
if (index >= ValidSSID.Count)
{
return(null);
}
else
{
return(ValidSSID[index]);
}
}
internal int?PrevSnapshot(int ssid)
{
int index = ValidSSID.BinarySearch(ssid);
if (index < 0)
{
index = (~index) - 1;
}
else
{
index -= 1;
}
if (index < 0)
{
return(null);
}
else
{
return(ValidSSID[index]);
}
}
internal bool IsSnapshotValid(int ssid)
{
return(ValidSSID.BinarySearch(ssid) >= 0);
}
