/// <summary>
/// Create VectorOffset from List
/// </summary>
/// <typeparam name="T">IFBSerializable</typeparam>
/// <typeparam name="S">FlatbufferType</typeparam>
/// <param name="builder"></param>
/// <param name="list"></param>
/// <param name="fbCreateList"></param>
/// <returns></returns>
public static FlatBuffers.VectorOffset?CreateList <T, S>(FlatBuffers.FlatBufferBuilder builder
, List <T> list, Func <FlatBufferBuilder, Offset <S>[], VectorOffset> fbCreateList)
where S : struct, FlatBuffers.IFlatbufferObject where T : IFBSerializable
{
if (list == null)
{
return(null);
}
if (FlatbufferSerializer.obj2FSMapping.TryGetValue(list, out int bufPos))
{
// the list was already serialized so we need to use this VectorOffset in order to keep the reference
var result = new FlatBuffers.VectorOffset(bufPos);
return(result);
}
else
{
if (typeof(IFBSerializable).IsAssignableFrom(typeof(T)))
{
var tempArray = new FlatBuffers.Offset <S> [list.Count];
for (int i = 0; i < list.Count; i++)
{
var listElemOffset = FlatbufferSerializer.GetOrCreateSerialize(builder, (IFBSerializable)list[i]);
if (listElemOffset != null)
{
tempArray[i] = new FlatBuffers.Offset <S>((int)listElemOffset);
}
}
var result = fbCreateList(builder, tempArray);
FlatbufferSerializer.obj2FSMapping[list] = result.Value;
return(result);
}
return(null);
}
}
/// <summary>
/// Deserialized a list with NON-Primitive content
/// </summary>
/// <typeparam name="T">The result-type e.g. UID,... that implements IFBSerializable</typeparam>
/// <typeparam name="S">The FBType that contained in the fb-list</typeparam>
/// <param name="bufferPos">The bufferposition of this list</param>
/// <param name="amount">The amount of elements this list contains</param>
/// <param name="getItem">The function that returns the corresponding list-item wrapped into a to the parameter</param>
/// <returns></returns>
public static List <T> DeserializeList <T, S>(int bufferPos, int amount, List <object> items) where S : IFlatbufferObject where T : IFBSerializable, new()
{
if (bufferPos == 0)
{
return(null);
}
if (fb2objMapping.TryGetValue(bufferPos, out object value))
{
// we already deserialized this list give back the already created version to keep the reference
return((List <T>)value);
}
else
{
var result = new List <T>();
for (int i = 0; i < amount; i++)
{
var obj = items[i];
if (obj != null)
{
var deserializedElement = FlatbufferSerializer.GetOrCreateDeserialize <T>((S)obj);
result.Add(deserializedElement);
}
}
fb2objMapping[bufferPos] = result;
return(result);
}
}
