public static MultiDawg <TPayload> LoadFrom(Stream stream, Func <BinaryReader, TPayload> readPayload)
{
var reader = new BinaryReader(stream);
if (reader.ReadInt32() != Signature)
{
throw new Exception("Invalid signature.");
}
if (reader.ReadInt32() != Version)
{
throw new Exception("Invalid version.");
}
int nodeCount = reader.ReadInt32();
int rootNodeIndex = reader.ReadInt32();
TPayload[][] payloads = reader.ReadArray(r => r.ReadArray(readPayload));
char[] indexToChar = reader.ReadArray(r => r.ReadChar());
ushort[] charToIndexPlusOne = CharToIndexPlusOneMap.Get(indexToChar);
YaleReader.ReadChildren(indexToChar, nodeCount, reader, out var firstChildForNode, out var children);
var yaleGraph = new YaleGraph(children, firstChildForNode, charToIndexPlusOne, rootNodeIndex, indexToChar);
return(new MultiDawg <TPayload>(yaleGraph, payloads));
}
public YaleDawg(BinaryReader reader, Func <BinaryReader, TPayload> readPayload)
{
nodeCount = reader.ReadInt32();
rootNodeIndex = reader.ReadInt32();
payloads = reader.ReadArray(readPayload);
indexToChar = reader.ReadArray(r => r.ReadChar());
ushort[] charToIndexPlusOne = CharToIndexPlusOneMap.Get(indexToChar);
YaleReader.ReadChildren(indexToChar, nodeCount, reader, out firstChildForNode, out children);
yaleGraph = new YaleGraph(children, firstChildForNode, charToIndexPlusOne, rootNodeIndex, indexToChar);
}
private static void WriteChildrenNoLength <T>(BinaryWriter writer, IEnumerable <Node <T> > nodes, Dictionary <Node <T>, int> nodeIndex, char[] allChars)
{
ushort[] charToIndexPlusOne = CharToIndexPlusOneMap.Get(allChars);
char firstChar = allChars.FirstOrDefault();
foreach (var node in nodes)
{
WriteInt(writer, node.Children.Count, allChars.Length + 1);
foreach (var child in node.Children.OrderBy(c => c.Key))
{
int charIndex = charToIndexPlusOne [child.Key - firstChar] - 1;
WriteInt(writer, charIndex, allChars.Length);
writer.Write(nodeIndex [child.Value]);
}
}
}
