/// <summary>
/// Serializes a tag reference.
/// </summary>
/// <param name="context">The serialization context to use.</param>
/// <param name="block">The block to write to.</param>
/// <param name="referencedTag">The referenced tag.</param>
/// <param name="valueInfo">Information about the value. Can be <c>null</c>.</param>
private void SerializeTagReference(ISerializationContext context, IDataBlock block, CachedTag referencedTag, TagFieldAttribute valueInfo)
{
if (referencedTag != null && referencedTag.Group == TagGroup.None)
{
referencedTag = null;
}
if (referencedTag != null && valueInfo != null && valueInfo.ValidTags != null)
{
foreach (string tag in valueInfo.ValidTags)
{
if (!referencedTag.IsInGroup(tag))
{
throw new Exception($"Invalid group for tag reference: {referencedTag.Group.Tag}");
}
}
}
block.AddTagReference(referencedTag, valueInfo == null ? false : valueInfo.Flags.HasFlag(Short));
if (valueInfo == null || !valueInfo.Flags.HasFlag(Short))
{
block.Writer.Write((referencedTag != null) ? referencedTag.Group.Tag.Value : -1);
block.Writer.Write(0);
block.Writer.Write(0);
}
block.Writer.Write((referencedTag != null) ? referencedTag.Index : -1);
}
/// <summary>
/// Serializes a tag reference.
/// </summary>
/// <param name="context">The serialization context to use.</param>
/// <param name="block">The block to write to.</param>
/// <param name="referencedTag">The referenced tag.</param>
/// <param name="valueInfo">Information about the value. Can be <c>null</c>.</param>
private void SerializeTagReference(ISerializationContext context, IDataBlock block, CachedTagInstance referencedTag, TagFieldAttribute valueInfo)
{
if ((referencedTag?.Index ?? 0) == -1)
{
referencedTag = context.GetTagByName(referencedTag.Group, referencedTag.Name);
}
if (referencedTag != null && valueInfo != null && valueInfo.ValidTags != null)
{
foreach (string tag in valueInfo.ValidTags)
{
if (!referencedTag.IsInGroup(tag))
{
throw new Exception($"Invalid group for tag reference: {referencedTag.Group.Tag}");
}
}
}
block.AddTagReference(referencedTag);
if (valueInfo == null || !valueInfo.Flags.HasFlag(Short))
{
block.Writer.Write((referencedTag != null) ? referencedTag.Group.Tag.Value : -1);
block.Writer.Write(0);
block.Writer.Write(0);
}
block.Writer.Write((referencedTag != null) ? referencedTag.Index : -1);
}