protected void WriteAttributeData(BinaryStream stream, NomadValue attr, int baseOffset = 0)
{
var ptr = (int)stream.Position + baseOffset;
var data = attr.Data;
var type = data.Type;
var size = data.Size;
var buffer = data.Buffer;
if (data.Type == DataType.RML)
{
throw new InvalidOperationException("Cannot serialize RML data directly!");
}
var oldSize = size;
var attrData = (Format != FormatType.Resource)
? Utils.GetAttributeDataMiniBuffer(buffer, type)
: Utils.GetAttributeDataBuffer(buffer, type);
size = attrData.Length;
var writeData = true;
if (size > 4)
{
// return cached instance, else cache it and return empty
var cache = WriteCache.PreCache(ptr, attrData, size);
if (!cache.IsEmpty)
{
// sizes must match
if (cache.Size == size)
{
var nD = DescriptorTag.CreateReference(cache.Offset, ReferenceType.Offset);
nD.WriteTo(stream, baseOffset);
writeData = false;
}
}
}
if (writeData)
{
var nD = DescriptorTag.Create(size);
nD.WriteTo(stream);
stream.Write(attrData);
}
}
protected void WriteAttributesData_FmtB(BinaryStream stream, List <NomadValue> attributes, int baseOffset)
{
var ptr = (int)stream.Position + baseOffset;
var nAttrs = attributes.Count;
if (nAttrs > 0)
{
var attrData = new byte[nAttrs * 4];
using (var bs = new BinaryStream(attrData))
{
foreach (var attr in attributes)
{
bs.Write(attr.Id.Hash);
}
}
var cache = WriteCache.PreCache(ptr, attrData, nAttrs);
if (!cache.IsEmpty)
{
var ndAttrs = DescriptorTag.CreateReference(cache.Offset, ReferenceType.Offset);
ndAttrs.WriteTo(stream, baseOffset);
}
else
{
var count = DescriptorTag.Create(nAttrs);
count.WriteTo(stream);
stream.Write(attrData);
}
foreach (var attr in attributes)
{
WriteAttribute_FmtB(stream, attr, baseOffset);
}
}
else
{
// nothing to write
stream.WriteByte(0);
}
}
private void WriteAttributeHashes(BinaryStream stream)
{
var ptr = (int)stream.Position;
var nAttrs = Attributes.Count;
if (nAttrs > 0)
{
var attrHBuf = new byte[(nAttrs * 4) + 1];
using (var buf = new BinaryStream(attrHBuf))
{
buf.WriteByte(nAttrs);
foreach (var attr in Attributes)
{
attr.Serialize(buf, true);
}
}
if (WriteCache.IsCached(attrHBuf, nAttrs))
{
var cache = WriteCache.GetData(attrHBuf, nAttrs);
var nhD = DescriptorTag.CreateReference(cache.Offset, ReferenceType.Offset);
nhD.WriteTo(stream);
}
else
{
WriteCache.Cache(ptr, attrHBuf, nAttrs);
stream.Write(attrHBuf);
}
}
else
{
// nothing to write
stream.WriteByte(0);
}
}
public override void Serialize(BinaryStream stream)
{
Offset = (int)stream.Position;
var nChildren = Children.Count;
var nAttributes = Attributes.Count;
var writeData = true;
if (Size > 16)
{
if (WriteCache.IsCached(this))
{
var cache = WriteCache.GetData(this);
var obj = cache.Object as NodeClass;
if ((obj != null) && obj.Equals(this))
{
Debug.WriteLine($">> [Class:{Offset:X8}] Instance cached @ {cache.Offset:X8} with key {cache.Checksum:X8}");
var nD = DescriptorTag.CreateReference(cache.Offset, ReferenceType.Offset);
nD.WriteTo(stream);
writeData = false;
}
else
{
Debug.WriteLine($">> [Class:{Offset:X8}] !!! FALSE POSITIVE !!!");
}
}
else
{
Debug.WriteLine($">> [Class:{Offset:X8}] Caching new instance with key {GetHashCode():X8}");
WriteCache.Cache(Offset, this);
}
}
if (writeData)
{
var nD = DescriptorTag.Create(nChildren);
nD.WriteTo(stream);
stream.Write(Hash);
// skip size parameter for now
stream.Position += 2;
var attrsPtr = stream.Position;
if (nAttributes > 0)
{
WriteAttributeHashes(stream);
// write attribute data
foreach (var attribute in Attributes)
{
attribute.Serialize(stream);
}
}
else
{
// no attributes to write!
stream.WriteByte(0);
}
var childrenPtr = stream.Position;
var attrsSize = (int)(childrenPtr - attrsPtr);
if (attrsSize > 65535)
{
throw new InvalidOperationException("Attribute data too large.");
}
// write attributes size
stream.Position = (attrsPtr - 2);
stream.Write((short)attrsSize);
// now write the children out
stream.Position = childrenPtr;
foreach (var child in Children)
{
child.Serialize(stream);
}
}
}
