private IBC.BlobEntry ReadV1BlobEntry()
{
BlobType type = (BlobType)reader.ReadInt32();
reader.ReadUInt32(); // Flags. Unused here.
IBC.BlobEntry blob;
switch (type)
{
case BlobType.MetadataStringPool:
case BlobType.MetadataGuidPool:
case BlobType.MetadataBlobPool:
case BlobType.MetadataUserStringPool:
blob = ReadPoolPayload();
break;
case BlobType.ParamTypeSpec:
blob = ReadSignaturePayload();
break;
case BlobType.ParamMethodSpec:
// V1 data used a special prefix to indicate method signatures.
// It's not obvious why this was necessary given that the type
// field already contains this information; in any event, the
// prefix is removed here by passing true.
blob = ReadSignaturePayload(true);
break;
case BlobType.EndOfBlobStream:
blob = new IBC.BlobEntry.EndOfStreamEntry();
break;
default:
throw new IBCException("Unexpected blob type in V1 file.");
}
blob.Token = 0; // V1 files didn't store tokens for blob entries.
blob.Type = type;
return(blob);
}
private IBC.BlobEntry ReadBlobEntry()
{
int size;
long startPosition = ReadSizeAndGetStart(out size);
BlobType type = (BlobType)ReadSmallInt();
uint token = ReadTokenWithMemory(ref lastTokens.LastBlobToken);
IBC.BlobEntry blob;
// The "Read...Payload" functions create objects of the right type and
// populate the type-specific information from the stream. The
// fields common to all blob entries (read above) are set after
// the object is returned.
switch (type)
{
case BlobType.MetadataStringPool:
case BlobType.MetadataGuidPool:
case BlobType.MetadataBlobPool:
case BlobType.MetadataUserStringPool:
blob = ReadPoolPayload();
break;
case BlobType.ParamTypeSpec:
case BlobType.ParamMethodSpec:
blob = ReadSignaturePayload();
break;
case BlobType.ExternalNamespaceDef:
blob = ReadExternalNamespacePayload();
break;
case BlobType.ExternalTypeDef:
blob = ReadExternalTypePayload();
break;
case BlobType.ExternalSignatureDef:
blob = ReadExternalSignaturePayload();
break;
case BlobType.ExternalMethodDef:
blob = ReadExternalMethodPayload();
break;
case BlobType.EndOfBlobStream:
blob = new IBC.BlobEntry.EndOfStreamEntry();
break;
default:
long read = CurrentPosition - startPosition;
byte[] data = reader.ReadBytes((int)size - (int)read);
blob = new IBC.BlobEntry.UnknownEntry {
Payload = data
};
break;
}
blob.Token = token;
blob.Type = type;
SeekTo(startPosition + size);
return(blob);
}
