mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/ObjectReader.cs

   1 // ObjectReader.cs\r
   2 //\r
   3 // Author:\r
   4 //   Lluis Sanchez Gual (lluis@ideary.com)\r
   5 //   Patrik Torstensson\r
   6 //\r
   7 // (C) 2003 Lluis Sanchez Gual\r
   8 \r
   9 using System;\r
  10 using System.Runtime.Serialization;\r
  11 using System.IO;\r
  12 using System.Collections;\r
  13 using System.Reflection;\r
  14 using System.Runtime.Remoting.Messaging;\r
  15 using System.Globalization;\r
  16 \r
  17 namespace System.Runtime.Serialization.Formatters.Binary\r
  18 {\r
  19         internal class ObjectReader\r
  20         {\r
  21                 BinaryFormatter _formatter;\r
  22                 ISurrogateSelector _surrogateSelector;\r
  23                 StreamingContext _context;\r
  24                 SerializationBinder _binder;\r
  25                 \r
  26 #if NET_1_1\r
  27                 TypeFilterLevel _filterLevel;\r
  28 #endif\r
  29 \r
  30                 ObjectManager _manager;\r
  31                 Hashtable _registeredAssemblies = new Hashtable();\r
  32                 Hashtable _typeMetadataCache = new Hashtable();\r
  33 \r
  34                 object _lastObject = null;\r
  35                 long _lastObjectID = 0;\r
  36                 long _rootObjectID = 0;\r
  37 \r
  38                 class TypeMetadata\r
  39                 {\r
  40                         public Type Type;\r
  41                         public Type[] MemberTypes;\r
  42                         public string[] MemberNames;\r
  43                         public MemberInfo[] MemberInfos;\r
  44                         public int FieldCount;\r
  45                         public bool NeedsSerializationInfo;\r
  46                 }\r
  47 \r
  48                 class ArrayNullFiller\r
  49                 {\r
  50                         public ArrayNullFiller(int count) { NullCount = count; }\r
  51                         public int NullCount;\r
  52                 }\r
  53 \r
  54                 public ObjectReader (BinaryFormatter formatter)\r
  55                 {\r
  56                         _formatter = formatter;\r
  57                         _surrogateSelector = formatter.SurrogateSelector;\r
  58                         _context = formatter.Context;\r
  59                         _binder = formatter.Binder;\r
  60                         _manager = new ObjectManager (_surrogateSelector, _context);\r
  61                         \r
  62 #if NET_1_1\r
  63                         _filterLevel = formatter.FilterLevel;\r
  64 #endif\r
  65                 }\r
  66 \r
  67                 public void ReadObjectGraph (BinaryReader reader, bool readHeaders, out object result, out Header[] headers)\r
  68                 {\r
  69                         headers = null;\r
  70 \r
  71                         // Reads the objects. The first object in the stream is the\r
  72                         // root object.\r
  73 \r
  74                         while (ReadNextObject (reader))\r
  75                         {\r
  76                                 if (readHeaders && (headers == null))\r
  77                                         headers = (Header[])CurrentObject;\r
  78                                 else\r
  79                                         if (_rootObjectID == 0) _rootObjectID = _lastObjectID;\r
  80                         }\r
  81 \r
  82                         result = _manager.GetObject (_rootObjectID);\r
  83                 }\r
  84 \r
  85                 public bool ReadNextObject (BinaryReader reader)\r
  86                 {\r
  87                         BinaryElement element = (BinaryElement)reader.ReadByte ();\r
  88                         if (element == BinaryElement.End)\r
  89                         {\r
  90                                 _manager.DoFixups();\r
  91 \r
  92                                 _manager.RaiseDeserializationEvent();\r
  93                                 return false;\r
  94                         }\r
  95 \r
  96                         SerializationInfo info;\r
  97                         long objectId;\r
  98 \r
  99                         ReadObject (element, reader, out objectId, out _lastObject, out info);\r
 100 \r
 101                         if (objectId != 0) {\r
 102                                 RegisterObject (objectId, _lastObject, info, 0, null, null);\r
 103                                 _lastObjectID = objectId;               \r
 104                         }\r
 105         \r
 106                         return true;\r
 107                 }\r
 108 \r
 109                 public object CurrentObject\r
 110                 {\r
 111                         get { return _lastObject; }\r
 112                 }\r
 113 \r
 114                 // Reads an object from the stream. The object is registered in the ObjectManager.\r
 115                 // The result can be either the object instance\r
 116                 // or the id of the object (when what is found in the stream is an object reference).\r
 117                 // If an object instance is read, the objectId is set to 0.\r
 118                 \r
 119                 private void ReadObject (BinaryElement element, BinaryReader reader, out long objectId, out object value, out SerializationInfo info)\r
 120                 {\r
 121                         switch (element)\r
 122                         {\r
 123                                 case BinaryElement.RefTypeObject:\r
 124                                         ReadRefTypeObjectInstance (reader, out objectId, out value, out info);\r
 125                                         break;\r
 126 \r
 127                                 case BinaryElement.RuntimeObject:\r
 128                                         ReadObjectInstance (reader, true, out objectId, out value, out info);\r
 129                                         break;\r
 130 \r
 131                                 case BinaryElement.ExternalObject:\r
 132                                         ReadObjectInstance (reader, false, out objectId, out value, out info);\r
 133                                         break;\r
 134 \r
 135                                 case BinaryElement.String:\r
 136                                         info = null;\r
 137                                         ReadStringIntance (reader, out objectId, out value);\r
 138                                         break;\r
 139 \r
 140                                 case BinaryElement.GenericArray:\r
 141                                         info = null;\r
 142                                         ReadGenericArray (reader, out objectId, out value);\r
 143                                         break;\r
 144 \r
 145 \r
 146                                 case BinaryElement.BoxedPrimitiveTypeValue:\r
 147                                         value = ReadBoxedPrimitiveTypeValue (reader);\r
 148                                         objectId = 0;\r
 149                                         info = null;\r
 150                                         break;\r
 151 \r
 152                                 case BinaryElement.NullValue:\r
 153                                         value = null;\r
 154                                         objectId = 0;\r
 155                                         info = null;\r
 156                                         break;\r
 157 \r
 158                                 case BinaryElement.Assembly:\r
 159                                         ReadAssembly (reader);\r
 160                                         ReadObject ((BinaryElement)reader.ReadByte (), reader, out objectId, out value, out info);\r
 161                                         break;\r
 162 \r
 163                                 case BinaryElement.ArrayFiller8b:\r
 164                                         value = new ArrayNullFiller(reader.ReadByte());\r
 165                                         objectId = 0;\r
 166                                         info = null;\r
 167                                         break;\r
 168 \r
 169                                 case BinaryElement.ArrayFiller32b:\r
 170                                         value = new ArrayNullFiller(reader.ReadInt32());\r
 171                                         objectId = 0;\r
 172                                         info = null;\r
 173                                         break;\r
 174 \r
 175                                 case BinaryElement.ArrayOfPrimitiveType:\r
 176                                         ReadArrayOfPrimitiveType (reader, out objectId, out value);\r
 177                                         info = null;\r
 178                                         break;\r
 179 \r
 180                                 case BinaryElement.ArrayOfObject:\r
 181                                         ReadArrayOfObject (reader, out objectId, out value);\r
 182                                         info = null;\r
 183                                         break;\r
 184 \r
 185                                 case BinaryElement.ArrayOfString:\r
 186                                         ReadArrayOfString (reader, out objectId, out value);\r
 187                                         info = null;\r
 188                                         break;\r
 189 \r
 190                                 default:\r
 191                                         throw new SerializationException ("Unexpected binary element: " + (int)element);\r
 192                         }\r
 193                 }\r
 194 \r
 195                 private void ReadAssembly (BinaryReader reader)\r
 196                 {\r
 197                         long id = (long) reader.ReadUInt32 ();\r
 198                         string assemblyName = reader.ReadString ();\r
 199                         _registeredAssemblies [id] = assemblyName;\r
 200                 }\r
 201 \r
 202                 private void ReadObjectInstance (BinaryReader reader, bool isRuntimeObject, out long objectId, out object value, out SerializationInfo info)\r
 203                 {\r
 204                         objectId = (long) reader.ReadUInt32 ();\r
 205 \r
 206                         TypeMetadata metadata = ReadTypeMetadata (reader, isRuntimeObject);\r
 207                         ReadObjectContent (reader, metadata, objectId, out value, out info);\r
 208                 }\r
 209 \r
 210                 private void ReadRefTypeObjectInstance (BinaryReader reader, out long objectId, out object value, out SerializationInfo info)\r
 211                 {\r
 212                         objectId = (long) reader.ReadUInt32 ();\r
 213                         long refTypeObjectId = (long) reader.ReadUInt32 ();\r
 214 \r
 215                         // Gets the type of the referred object and its metadata\r
 216 \r
 217                         object refObj = _manager.GetObject (refTypeObjectId);\r
 218                         if (refObj == null) throw new SerializationException ("Invalid binary format");\r
 219                         TypeMetadata metadata = (TypeMetadata)_typeMetadataCache [refObj.GetType()];\r
 220 \r
 221                         ReadObjectContent (reader, metadata, objectId, out value, out info);\r
 222                 }\r
 223 \r
 224                 private void ReadObjectContent (BinaryReader reader, TypeMetadata metadata, long objectId, out object objectInstance, out SerializationInfo info)\r
 225                 {\r
 226 #if NET_1_1\r
 227                         if (_filterLevel == TypeFilterLevel.Low)\r
 228                                 objectInstance = FormatterServices.GetSafeUninitializedObject (metadata.Type);\r
 229                         else\r
 230 #endif\r
 231                                 objectInstance = FormatterServices.GetUninitializedObject (metadata.Type);\r
 232                                 \r
 233                         info = metadata.NeedsSerializationInfo ? new SerializationInfo(metadata.Type, new FormatterConverter()) : null;\r
 234 \r
 235                         if (metadata.MemberNames != null)\r
 236                                 for (int n=0; n<metadata.FieldCount; n++)\r
 237                                         ReadValue (reader, objectInstance, objectId, info, metadata.MemberTypes[n], metadata.MemberNames[n], null, null);\r
 238                         else\r
 239                                 for (int n=0; n<metadata.FieldCount; n++)\r
 240                                         ReadValue (reader, objectInstance, objectId, info, metadata.MemberTypes[n], metadata.MemberInfos[n].Name, metadata.MemberInfos[n], null);\r
 241                 }\r
 242 \r
 243                 private void RegisterObject (long objectId, object objectInstance, SerializationInfo info, long parentObjectId, MemberInfo parentObjectMemeber, int[] indices)\r
 244                 {\r
 245                         if (parentObjectId == 0) indices = null;\r
 246 \r
 247                         if (!objectInstance.GetType().IsValueType || parentObjectId == 0)\r
 248                                 _manager.RegisterObject (objectInstance, objectId, info, 0, null, null);\r
 249                         else\r
 250                         {\r
 251                                 if (indices != null) indices = (int[])indices.Clone();\r
 252                                 _manager.RegisterObject (objectInstance, objectId, info, parentObjectId, parentObjectMemeber, indices);\r
 253                         }\r
 254                 }\r
 255 \r
 256                 private void ReadStringIntance (BinaryReader reader, out long objectId, out object value)\r
 257                 {\r
 258                         objectId = (long) reader.ReadUInt32 ();\r
 259                         value = reader.ReadString ();\r
 260                 }\r
 261 \r
 262                 private void ReadGenericArray (BinaryReader reader, out long objectId, out object val)\r
 263                 {\r
 264                         objectId = (long) reader.ReadUInt32 ();\r
 265                         ArrayStructure structure = (ArrayStructure) reader.ReadByte();\r
 266 \r
 267                         int rank = reader.ReadInt32();\r
 268 \r
 269                         bool emptyDim = false;\r
 270                         int[] lengths = new int[rank];\r
 271                         for (int n=0; n<rank; n++)\r
 272                         {\r
 273                                 lengths[n] = reader.ReadInt32();\r
 274                                 if (lengths[n] == 0) emptyDim = true;\r
 275                         }\r
 276 \r
 277                         TypeTag code = (TypeTag) reader.ReadByte ();\r
 278                         Type elementType = ReadType (reader, code);\r
 279 \r
 280                         Array array = Array.CreateInstance (elementType, lengths);\r
 281 \r
 282                         if (emptyDim) \r
 283                         { \r
 284                                 val = array;\r
 285                                 return;\r
 286                         }\r
 287 \r
 288                         int[] indices = new int[rank];\r
 289 \r
 290                         // Initialize indexes\r
 291                         for (int dim = rank-1; dim >= 0; dim--)\r
 292                                 indices[dim] = array.GetLowerBound (dim);\r
 293 \r
 294                         bool end = false;\r
 295                         while (!end)\r
 296                         {\r
 297                                 ReadValue (reader, array, objectId, null, elementType, null, null, indices);\r
 298 \r
 299                                 for (int dim = array.Rank-1; dim >= 0; dim--)\r
 300                                 {\r
 301                                         indices[dim]++;\r
 302                                         if (indices[dim] > array.GetUpperBound (dim))\r
 303                                         {\r
 304                                                 if (dim > 0) \r
 305                                                 {\r
 306                                                         indices[dim] = array.GetLowerBound (dim);\r
 307                                                         continue;       // Increment the next dimension's index\r
 308                                                 }\r
 309                                                 end = true;     // That was the last dimension. Finished.\r
 310                                         }\r
 311                                         break;\r
 312                                 }\r
 313                         }\r
 314                         val = array;\r
 315                 }\r
 316 \r
 317                 private object ReadBoxedPrimitiveTypeValue (BinaryReader reader)\r
 318                 {\r
 319                         Type type = ReadType (reader, TypeTag.PrimitiveType);\r
 320                         return ReadPrimitiveTypeValue (reader, type);\r
 321                 }\r
 322 \r
 323                 private void ReadArrayOfPrimitiveType (BinaryReader reader, out long objectId, out object val)\r
 324                 {\r
 325                         objectId = (long) reader.ReadUInt32 ();\r
 326                         int length = reader.ReadInt32 ();\r
 327                         Type elementType = ReadType (reader, TypeTag.PrimitiveType);\r
 328 \r
 329                         Array array = Array.CreateInstance (elementType, length);\r
 330                         for (int n = 0; n < length; n++)\r
 331                                 array.SetValue (ReadPrimitiveTypeValue (reader, elementType), n);\r
 332 \r
 333                         val = array;\r
 334                 }\r
 335 \r
 336                 private void ReadArrayOfObject (BinaryReader reader, out long objectId, out object array)\r
 337                 {\r
 338                         ReadSimpleArray (reader, typeof (object), out objectId, out array);\r
 339                 }\r
 340                 \r
 341                 private void ReadArrayOfString (BinaryReader reader, out long objectId, out object array)\r
 342                 {\r
 343                         ReadSimpleArray (reader, typeof (string), out objectId, out array);\r
 344                 }\r
 345 \r
 346                 private void ReadSimpleArray (BinaryReader reader, Type elementType, out long objectId, out object val)\r
 347                 {\r
 348                         objectId = (long) reader.ReadUInt32 ();\r
 349                         int length = reader.ReadInt32 ();\r
 350                         int[] indices = new int[1];\r
 351 \r
 352                         Array array = Array.CreateInstance (elementType, length);\r
 353                         for (int n = 0; n < length; n++)\r
 354                         {\r
 355                                 indices[0] = n;\r
 356                                 ReadValue (reader, array, objectId, null, elementType, null, null, indices);\r
 357                                 n = indices[0];\r
 358                         }\r
 359                         val = array;\r
 360                 }\r
 361 \r
 362                 private TypeMetadata ReadTypeMetadata (BinaryReader reader, bool isRuntimeObject)\r
 363                 {\r
 364                         TypeMetadata metadata = new TypeMetadata();\r
 365 \r
 366                         string className = reader.ReadString ();\r
 367                         int fieldCount = reader.ReadInt32 ();\r
 368 \r
 369                         Type[] types = new Type[fieldCount];\r
 370                         string[] names = new string[fieldCount];\r
 371 \r
 372                         TypeTag[] codes = new TypeTag[fieldCount];\r
 373 \r
 374                         for (int n=0; n<fieldCount; n++)\r
 375                                 names [n] = reader.ReadString ();\r
 376 \r
 377                         for (int n=0; n<fieldCount; n++)\r
 378                                 codes [n] = (TypeTag) reader.ReadByte ();\r
 379 \r
 380                         for (int n=0; n<fieldCount; n++)\r
 381                                 types [n] = ReadType (reader, codes[n]);\r
 382 \r
 383                         // Gets the type\r
 384 \r
 385                         if (!isRuntimeObject) \r
 386                         {\r
 387                                 long assemblyId = (long)reader.ReadUInt32();\r
 388                                 metadata.Type = GetDeserializationType (assemblyId, className);\r
 389                         }\r
 390                         else\r
 391                                 metadata.Type = Type.GetType (className, true);\r
 392 \r
 393                         metadata.MemberTypes = types;\r
 394                         metadata.MemberNames = names;\r
 395                         metadata.FieldCount = names.Length;\r
 396 \r
 397                         // Now check if this objects needs a SerializationInfo struct for deserialziation.\r
 398                         // SerializationInfo is needed if the object has to be deserialized using\r
 399                         // a serialization surrogate, or if it implements ISerializable.\r
 400 \r
 401                         if (_surrogateSelector != null)\r
 402                         {\r
 403                                 // check if the surrogate selector handles objects of the given type. \r
 404                                 ISurrogateSelector selector;\r
 405                                 ISerializationSurrogate surrogate = _surrogateSelector.GetSurrogate (metadata.Type, _context, out selector);\r
 406                                 metadata.NeedsSerializationInfo = (surrogate != null);\r
 407                         }\r
 408 \r
 409                         if (!metadata.NeedsSerializationInfo)\r
 410                         {\r
 411                                 // Check if the object is marked with the Serializable attribute\r
 412 \r
 413                                 if (!metadata.Type.IsSerializable)\r
 414                                         throw new SerializationException("Serializable objects must be marked with the Serializable attribute");\r
 415 \r
 416                                 metadata.NeedsSerializationInfo = (metadata.Type.GetInterface ("ISerializable") != null);\r
 417                                 if (!metadata.NeedsSerializationInfo)\r
 418                                 {\r
 419                                         metadata.MemberInfos = new MemberInfo [fieldCount];\r
 420                                         for (int n=0; n<fieldCount; n++)\r
 421                                         {\r
 422                                                 MemberInfo[] members = null;\r
 423                                                 string memberName = names[n];\r
 424                                                 \r
 425                                                 int i = memberName.IndexOf ('+');\r
 426                                                 if (i != -1) {\r
 427                                                         string baseTypeName = names[n].Substring (0,i);\r
 428                                                         memberName = names[n].Substring (i+1);\r
 429                                                         Type t = metadata.Type.BaseType;\r
 430                                                         while (t != null) {\r
 431                                                                 if (t.Name == baseTypeName) {\r
 432                                                                         members = t.GetMember (memberName, MemberTypes.Field | MemberTypes.Property, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);\r
 433                                                                         break;\r
 434                                                                 }\r
 435                                                                 else\r
 436                                                                         t = t.BaseType;\r
 437                                                         }\r
 438                                                 }\r
 439                                                 else\r
 440                                                         members = metadata.Type.GetMember (memberName, MemberTypes.Field | MemberTypes.Property, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);\r
 441                                                         \r
 442                                                 if (members == null || members.Length == 0) throw new SerializationException ("Field \"" + names[n] + "\" not found in class " + metadata.Type.FullName);\r
 443                                                 if (members.Length > 1) throw new SerializationException ("There are two public members named \"" + names[n] + "\" in the class hirearchy of " + metadata.Type.FullName);\r
 444                                                 metadata.MemberInfos [n] = members[0];\r
 445                                         }\r
 446                                         metadata.MemberNames = null;    // Info now in MemberInfos\r
 447                                 }\r
 448                         }\r
 449 \r
 450                         // Registers the type's metadata so it can be reused later if\r
 451                         // a RefTypeObject element is found\r
 452 \r
 453                         if (!_typeMetadataCache.ContainsKey (metadata.Type))\r
 454                                 _typeMetadataCache [metadata.Type] = metadata;\r
 455 \r
 456                         return metadata;\r
 457                 }\r
 458 \r
 459 \r
 460                 private void ReadValue (BinaryReader reader, object parentObject, long parentObjectId, SerializationInfo info, Type valueType, string fieldName, MemberInfo memberInfo, int[] indices)\r
 461                 {\r
 462                         // Reads a value from the stream and assigns it to the member of an object\r
 463 \r
 464                         object val;\r
 465 \r
 466                         if (BinaryCommon.IsPrimitive (valueType))\r
 467                         {\r
 468                                 val = ReadPrimitiveTypeValue (reader, valueType);\r
 469                                 SetObjectValue (parentObject, fieldName, memberInfo, info, val, valueType, indices);\r
 470                                 return;\r
 471                         }\r
 472 \r
 473                         // Gets the object\r
 474 \r
 475                         BinaryElement element = (BinaryElement)reader.ReadByte ();\r
 476 \r
 477                         if (element == BinaryElement.ObjectReference)\r
 478                         {\r
 479                                 // Just read the id of the referred object and record a fixup\r
 480                                 long childObjectId = (long) reader.ReadUInt32();\r
 481                                 RecordFixup (parentObjectId, childObjectId, parentObject, info, fieldName, memberInfo, indices);\r
 482                                 return;\r
 483                         }\r
 484 \r
 485                         long objectId;\r
 486                         SerializationInfo objectInfo;\r
 487 \r
 488                         ReadObject (element, reader, out objectId, out val, out objectInfo);\r
 489 \r
 490                         // There are two cases where the object cannot be assigned to the parent\r
 491                         // and a fixup must be used:\r
 492                         //  1) When what has been read is not an object, but an id of an object that\r
 493                         //     has not been read yet (an object reference). This is managed in the\r
 494                         //     previous block of code.\r
 495                         //  2) When the read object is a value type object. Value type fields hold\r
 496                         //     copies of objects, not references. Thus, if the value object that\r
 497                         //     has been read has pending fixups, those fixups would be made to the\r
 498                         //     boxed copy in the ObjectManager, and not in the required object instance\r
 499 \r
 500                         // First of all register the fixup, and then the object. ObjectManager is more\r
 501                         // efficient if done in this order\r
 502 \r
 503                         bool hasFixup = false;\r
 504                         if (objectId != 0)\r
 505                         {\r
 506                                 if (val.GetType().IsValueType)\r
 507                                 {\r
 508                                         RecordFixup (parentObjectId, objectId, parentObject, info, fieldName, memberInfo, indices);\r
 509                                         hasFixup = true;\r
 510                                 }\r
 511 \r
 512                                 // Register the value\r
 513 \r
 514                                 if (info == null && !(parentObject is Array))\r
 515                                         RegisterObject (objectId, val, objectInfo, parentObjectId, memberInfo, null);\r
 516                                 else\r
 517                                         RegisterObject (objectId, val, objectInfo, parentObjectId, null, indices);\r
 518                         }\r
 519                         // Assign the value to the parent object, unless there is a fixup\r
 520                         \r
 521                         if (!hasFixup) \r
 522                                 SetObjectValue (parentObject, fieldName, memberInfo, info, val, valueType, indices);\r
 523                 }\r
 524 \r
 525                 private void SetObjectValue (object parentObject, string fieldName, MemberInfo memberInfo, SerializationInfo info, object value, Type valueType, int[] indices)\r
 526                 {\r
 527                         if (value is IObjectReference)\r
 528                                 value = ((IObjectReference)value).GetRealObject (_context);\r
 529 \r
 530                         if (parentObject is Array) \r
 531                         {\r
 532                                 if (value is ArrayNullFiller) \r
 533                                 {\r
 534                                         // It must be a single dimension array of objects.\r
 535                                         // Just increase the index. Elements are null by default.\r
 536                                         int count = ((ArrayNullFiller)value).NullCount;\r
 537                                         indices[0] += count - 1;\r
 538                                 }\r
 539                                 else\r
 540                                         ((Array)parentObject).SetValue (value, indices);\r
 541                         }\r
 542                         else if (info != null) {\r
 543                                 info.AddValue (fieldName, value, valueType);\r
 544                         }\r
 545                         else {\r
 546                                 if (memberInfo is FieldInfo)\r
 547                                         ((FieldInfo)memberInfo).SetValue (parentObject, value);\r
 548                                 else\r
 549                                         ((PropertyInfo)memberInfo).SetValue (parentObject, value, null);\r
 550                         }\r
 551                 }\r
 552 \r
 553                 private void RecordFixup (long parentObjectId, long childObjectId, object parentObject, SerializationInfo info, string fieldName, MemberInfo memberInfo, int[] indices)\r
 554                 {\r
 555                         if (info != null) {\r
 556                                 _manager.RecordDelayedFixup (parentObjectId, fieldName, childObjectId);\r
 557                         }\r
 558                         else if (parentObject is Array) {\r
 559                                 if (indices.Length == 1)\r
 560                                         _manager.RecordArrayElementFixup (parentObjectId, indices[0], childObjectId);\r
 561                                 else\r
 562                                         _manager.RecordArrayElementFixup (parentObjectId, (int[])indices.Clone(), childObjectId);\r
 563                         }\r
 564                         else {\r
 565                                 _manager.RecordFixup (parentObjectId, memberInfo, childObjectId);\r
 566                         }\r
 567                 }\r
 568 \r
 569                 private Type GetDeserializationType (long assemblyId, string className)\r
 570                 {\r
 571                         string assemblyName = (string)_registeredAssemblies[assemblyId];\r
 572 \r
 573                         if (_binder == null)\r
 574                         {\r
 575                                 Assembly assembly = Assembly.Load (assemblyName);\r
 576                                 return assembly.GetType (className, true);\r
 577                         }\r
 578                         else\r
 579                                 return _binder.BindToType (assemblyName, className);\r
 580                 }\r
 581 \r
 582                 public Type ReadType (BinaryReader reader, TypeTag code)\r
 583                 {\r
 584                         switch (code)\r
 585                         {\r
 586                                 case TypeTag.PrimitiveType:\r
 587                                         return BinaryCommon.GetTypeFromCode (reader.ReadByte());\r
 588 \r
 589                                 case TypeTag.String:\r
 590                                         return typeof(string);\r
 591 \r
 592                                 case TypeTag.ObjectType:\r
 593                                         return typeof(object);\r
 594 \r
 595                                 case TypeTag.RuntimeType:\r
 596                                 {\r
 597                                         string name = reader.ReadString ();\r
 598                                         return Type.GetType (name, true);\r
 599                                 }\r
 600 \r
 601                                 case TypeTag.GenericType:\r
 602                                 {\r
 603                                         string name = reader.ReadString ();\r
 604                                         long asmid = (long) reader.ReadUInt32();\r
 605                                         return GetDeserializationType (asmid, name);\r
 606                                 }\r
 607 \r
 608                                 case TypeTag.ArrayOfObject:\r
 609                                         return typeof(object[]);\r
 610 \r
 611                                 case TypeTag.ArrayOfString:\r
 612                                         return typeof(string[]);\r
 613 \r
 614                                 case TypeTag.ArrayOfPrimitiveType:\r
 615                                         Type elementType = BinaryCommon.GetTypeFromCode (reader.ReadByte());\r
 616                                         return Type.GetType(elementType.FullName + "[]");\r
 617 \r
 618                                 default:\r
 619                                         throw new NotSupportedException ("Unknow type tag");\r
 620                         }\r
 621                 }\r
 622                 \r
 623                 public static object ReadPrimitiveTypeValue (BinaryReader reader, Type type)\r
 624                 {\r
 625                         if (type == null) return null;\r
 626 \r
 627                         switch (Type.GetTypeCode (type))\r
 628                         {\r
 629                                 case TypeCode.Boolean:\r
 630                                         return reader.ReadBoolean();\r
 631 \r
 632                                 case TypeCode.Byte:\r
 633                                         return reader.ReadByte();\r
 634 \r
 635                                 case TypeCode.Char:\r
 636                                         return reader.ReadChar();\r
 637 \r
 638                                 case TypeCode.DateTime: \r
 639                                         return new DateTime (reader.ReadInt64());\r
 640 \r
 641                                 case TypeCode.Decimal:\r
 642                                         return Decimal.Parse (reader.ReadString(), CultureInfo.InvariantCulture);\r
 643 \r
 644                                 case TypeCode.Double:\r
 645                                         return reader.ReadDouble();\r
 646 \r
 647                                 case TypeCode.Int16:\r
 648                                         return reader.ReadInt16();\r
 649 \r
 650                                 case TypeCode.Int32:\r
 651                                         return reader.ReadInt32();\r
 652 \r
 653                                 case TypeCode.Int64:\r
 654                                         return reader.ReadInt64();\r
 655 \r
 656                                 case TypeCode.SByte:\r
 657                                         return reader.ReadSByte();\r
 658 \r
 659                                 case TypeCode.Single:\r
 660                                         return reader.ReadSingle();\r
 661 \r
 662                                 case TypeCode.UInt16:\r
 663                                         return reader.ReadUInt16();\r
 664 \r
 665                                 case TypeCode.UInt32:\r
 666                                         return reader.ReadUInt32();\r
 667 \r
 668                                 case TypeCode.UInt64:\r
 669                                         return reader.ReadUInt64();\r
 670 \r
 671                                 case TypeCode.String:\r
 672                                         return reader.ReadString();\r
 673 \r
 674                                 default:\r
 675                                         if (type == typeof(TimeSpan))\r
 676                                                 return new TimeSpan (reader.ReadInt64 ());\r
 677                                         else\r
 678                                                 throw new NotSupportedException ("Unsupported primitive type: " + type.FullName);\r
 679                         }\r
 680                 }\r
 681         }\r
 682 }