// from Formatter only for serialize.
internal LookupSegment(ILookup <TKey, TElement> source)
{
this.comparer = ZeroFormatterEqualityComparer <TKey> .Default;
this.groupings = new List <IList <GroupingSegment <TKey, TElement> > >(source.Count);
for (int i = 0; i < source.Count; i++)
{
groupings.Add(null); // null clear
}
foreach (var g in source)
{
var group = GetGrouping(g.Key, true);
foreach (var item in g)
{
group.Add(item);
}
}
this.count = source.Count;
this.mode = LookupSegmentMode.LazyAll;
}
public static LookupSegment <TKey, TElement> Create(DirtyTracker tracker, byte[] bytes, int offset, LookupSegmentMode mode, out int byteSize)
{
tracker = tracker.CreateChild();
var byteSizeOrCount = BinaryUtil.ReadInt32(ref bytes, offset);
if (byteSizeOrCount == -1)
{
byteSize = 4;
return(null);
}
var segment = new LookupSegment <TKey, TElement>();
if (mode == LookupSegmentMode.LazyAll)
{
byteSize = byteSizeOrCount;
segment.count = BinaryUtil.ReadInt32(ref bytes, offset + 4);
var formatter = Formatter <IList <IList <GroupingSegment <TKey, TElement> > > > .Default;
int _;
segment.groupings = formatter.Deserialize(ref bytes, offset + 8, tracker, out _);
segment.tracker = tracker;
segment.originalBytes = new ArraySegment <byte>(bytes, offset, byteSize);
segment.mode = LookupSegmentMode.LazyAll;
return(segment);
}
else
{
var originalOffset = offset;
var keyFormatter = Formatter <TKey> .Default;
var valuesFormatter = Formatter <IList <TElement> > .Default;
segment.tracker = tracker;
segment.groupings = new List <IList <GroupingSegment <TKey, TElement> > >(byteSizeOrCount);
for (int i = 0; i < byteSizeOrCount; i++)
{
segment.groupings.Add(null); // null clear
}
int size = 0;
byteSize = 4;
offset += 4;
for (int i = 0; i < byteSizeOrCount; i++)
{
var key = keyFormatter.Deserialize(ref bytes, offset, tracker, out size);
byteSize += size;
offset += size;
var values = valuesFormatter.Deserialize(ref bytes, offset, tracker, out size);
byteSize += size;
offset += size;
var group = segment.GetGrouping(key, true);
foreach (var item in values)
{
group.Add(item);
}
}
segment.originalBytes = new ArraySegment <byte>(bytes, originalOffset, byteSize);
segment.mode = LookupSegmentMode.Immediate;
return(segment);
}
}
