public void EnumMessages(long fromPosition, Func <IMessage, bool> callback, EnumMessagesFlag flags)
{
var forward = (flags & EnumMessagesFlag.Forward) != 0;
var idx = ListUtils.GetBound(messages, null,
forward ? ValueBound.Lower : ValueBound.UpperReversed,
new PositionsComparer(fromPosition));
if (forward)
{
for (; idx < messages.Count; ++idx)
{
if (!callback(messages[idx]))
{
return;
}
}
}
else
{
for (; idx >= 0; --idx)
{
if (messages[idx].EndPosition <= fromPosition && !callback(messages[idx]))
{
return;
}
}
}
}
public DateBoundPositionResponseData GetDateBoundPosition(DateTime d, ValueBound bound)
{
var idx = ListUtils.GetBound(messages, (IMessage)null, bound, new DatesComparer(d));
if (idx < 0)
{
return new DateBoundPositionResponseData()
{
Position = -1,
Index = -1,
IsBeforeBeginPosition = true,
}
}
;
if (idx >= messages.Count)
{
return new DateBoundPositionResponseData()
{
Position = messages.Count == 0 ? 0 : (messages[messages.Count - 1].Position + 1),
Index = messages.Count,
IsEndPosition = true,
}
}
;
return(new DateBoundPositionResponseData()
{
Position = messages[idx].Position,
Index = idx,
Message = messages[idx]
});
}
};
}
static void TestBound(int value, ListUtils.ValueBound bound, int expectedIdx)
{
List <int> lst = new List <int>(new int[] { 0, 2, 2, 2, 3, 5, 7, 8, 8, 10 });
int actual = ListUtils.GetBound(lst, value, bound, Comparer <int> .Default);
Assert.AreEqual(expectedIdx, actual);
}
