// Decode from Base64 string.
public static WorkflowSymbol Decode(string symbolString)
{
byte[] data = Convert.FromBase64String(symbolString);
using (BinaryReader reader = new BinaryReader(new MemoryStream(data)))
{
byte[] checksum = null;
EncodingFormat format = (EncodingFormat)reader.ReadByte();
int payloadBytesCount = data.Length - sizeof(EncodingFormat);
if (0 != (format & EncodingFormat.Checksum))
{
int bytesCount = SymbolHelper.ReadEncodedInt32(reader);
checksum = reader.ReadBytes(bytesCount);
payloadBytesCount -= SymbolHelper.GetEncodedSize(bytesCount);
format &= (~EncodingFormat.Checksum);
}
switch (format)
{
case EncodingFormat.Binary:
return(ParseBinary(reader.ReadBytes(payloadBytesCount), checksum)); // Compute the
case EncodingFormat.String:
return(ParseStringRepresentation(reader.ReadString(), checksum));
}
}
throw FxTrace.Exception.AsError(new SerializationException());
}
// These constructors are private and used by Decode() method.
// Binary deserializer.
WorkflowSymbol(BinaryReader reader, byte[] checksum)
{
this.FileName = reader.ReadString();
int numSymbols = SymbolHelper.ReadEncodedInt32(reader);
this.Symbols = new List <ActivitySymbol>(numSymbols);
for (int i = 0; i < numSymbols; ++i)
{
this.Symbols.Add(new ActivitySymbol(reader));
}
this.checksum = checksum;
}
// Binary deserializer.
internal ActivitySymbol(BinaryReader reader)
{
this.StartLine = SymbolHelper.ReadEncodedInt32(reader);
this.StartColumn = SymbolHelper.ReadEncodedInt32(reader);
this.EndLine = SymbolHelper.ReadEncodedInt32(reader);
this.EndColumn = SymbolHelper.ReadEncodedInt32(reader);
int qidLength = SymbolHelper.ReadEncodedInt32(reader);
if (qidLength > 0)
{
this.QualifiedId = reader.ReadBytes(qidLength);
}
}
