mcs/class/System.ServiceModel.Web/System.Runtime.Serialization.Json/DataContractJsonSerializer.cs

   1 //
   2 // DataContractJsonSerializer.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2007-2008 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Collections;
  30 using System.Collections.Generic;
  31 using System.Collections.ObjectModel;
  32 using System.Globalization;
  33 using System.IO;
  34 using System.Linq;
  35 using System.Reflection;
  36 using System.Text;
  37 using System.Xml;
  38
  39 namespace System.Runtime.Serialization.Json
  40 {
  41         public sealed class DataContractJsonSerializer : XmlObjectSerializer
  42         {
  43                 const string default_root_name = "root";
  44
  45                 #region lengthy constructor list
  46
  47                 public DataContractJsonSerializer (Type type)
  48                         : this (type, Type.EmptyTypes)
  49                 {
  50                 }
  51
  52                 public DataContractJsonSerializer (Type type, IEnumerable<Type> knownTypes)
  53                         : this (type, default_root_name, knownTypes)
  54                 {
  55                 }
  56
  57                 public DataContractJsonSerializer (Type type, string rootName)
  58                         : this (type, rootName, Type.EmptyTypes)
  59                 {
  60                 }
  61
  62                 public DataContractJsonSerializer (Type type, XmlDictionaryString rootName)
  63                         : this (type, rootName != null ? rootName.Value : default_root_name, Type.EmptyTypes)
  64                 {
  65                 }
  66
  67                 public DataContractJsonSerializer (Type type, string rootName, IEnumerable<Type> knownTypes)
  68                         : this (type, rootName, knownTypes, int.MaxValue, false, false)
  69                 {
  70                 }
  71
  72                 public DataContractJsonSerializer (Type type, XmlDictionaryString rootName, IEnumerable<Type> knownTypes)
  73                         : this (type, rootName != null ? rootName.Value : default_root_name, knownTypes)
  74                 {
  75                 }
  76
  77                 DataContractJsonSerializer(Type type, string rootName, IEnumerable<Type> knownTypes, int maxItemsInObjectGraph, bool ignoreExtensionDataObject, bool alwaysEmitTypeInformation)
  78                 {
  79                         if (type == null)
  80                                 throw new ArgumentNullException ("type");
  81                         if (rootName == null)
  82                                 throw new ArgumentNullException ("rootName");
  83                         if (maxItemsInObjectGraph < 0)
  84                                 throw new ArgumentOutOfRangeException ("maxItemsInObjectGraph");
  85
  86                         this.type = type;
  87
  88                         var knownTypesFromAttributes = new List<Type> ();
  89
  90                         foreach (var attr in type.GetCustomAttributes (typeof (KnownTypeAttribute), false))
  91                                 knownTypesFromAttributes.Add ((attr as KnownTypeAttribute).Type);
  92
  93                         if (knownTypes != null)
  94                                 knownTypesFromAttributes.AddRange (knownTypes);
  95
  96                         known_types = new ReadOnlyCollection<Type> (knownTypesFromAttributes);
  97
  98                         root = rootName;
  99                         max_items = maxItemsInObjectGraph;
 100                         ignore_extension = ignoreExtensionDataObject;
 101                         always_emit_type = alwaysEmitTypeInformation;
 102                 }
 103
 104                 public DataContractJsonSerializer (Type type, IEnumerable<Type> knownTypes, int maxItemsInObjectGraph, bool ignoreExtensionDataObject, IDataContractSurrogate dataContractSurrogate, bool alwaysEmitTypeInformation)
 105             : this (type, default_root_name, knownTypes, maxItemsInObjectGraph, ignoreExtensionDataObject, alwaysEmitTypeInformation)
 106                 {
 107         }
 108
 109                 public DataContractJsonSerializer (Type type, string rootName, IEnumerable<Type> knownTypes, int maxItemsInObjectGraph, bool ignoreExtensionDataObject, IDataContractSurrogate dataContractSurrogate, bool alwaysEmitTypeInformation)
 110                         : this (type, rootName, knownTypes, maxItemsInObjectGraph, ignoreExtensionDataObject, alwaysEmitTypeInformation)
 111                 {
 112                         surrogate = dataContractSurrogate;
 113                 }
 114
 115                 public DataContractJsonSerializer (Type type, XmlDictionaryString rootName, IEnumerable<Type> knownTypes, int maxItemsInObjectGraph, bool ignoreExtensionDataObject, IDataContractSurrogate dataContractSurrogate, bool alwaysEmitTypeInformation)
 116                         : this (type, rootName != null ? rootName.Value : default_root_name, knownTypes, maxItemsInObjectGraph, ignoreExtensionDataObject, dataContractSurrogate, alwaysEmitTypeInformation)
 117                 {
 118                 }
 119
 120 #if NET_4_5
 121                 public DataContractJsonSerializer (Type type, DataContractJsonSerializerSettings settings)
 122                         : this (type, settings.RootName, settings.KnownTypes, settings.MaxItemsInObjectGraph, settings.IgnoreExtensionDataObject,
 123                                 settings.DataContractSurrogate, false)
 124                 {
 125                 }
 126 #endif
 127
 128         #endregion
 129
 130         Type type;
 131                 string root;
 132                 ReadOnlyCollection<Type> known_types;
 133                 int max_items;
 134                 bool ignore_extension;
 135                 bool always_emit_type;
 136                 IDataContractSurrogate surrogate;
 137
 138                 [MonoTODO]
 139                 public IDataContractSurrogate DataContractSurrogate {
 140                         get { return surrogate; }
 141                 }
 142
 143                 [MonoTODO]
 144                 public bool IgnoreExtensionDataObject {
 145                         get { return ignore_extension; }
 146                 }
 147                 public ReadOnlyCollection<Type> KnownTypes {
 148                         get { return known_types; }
 149                 }
 150
 151                 public int MaxItemsInObjectGraph {
 152                         get { return max_items; }
 153                 }
 154
 155                 public override bool IsStartObject (XmlReader reader)
 156                 {
 157                         if (reader == null)
 158                                 throw new ArgumentNullException ("reader");
 159                         reader.MoveToContent ();
 160                         return reader.IsStartElement (root, String.Empty);
 161                 }
 162
 163                 public override bool IsStartObject (XmlDictionaryReader reader)
 164                 {
 165                         return IsStartObject ((XmlReader) reader);
 166                 }
 167
 168                 public override object ReadObject (Stream stream)
 169                 {
 170 #if NET_2_1
 171                         var r = (JsonReader) JsonReaderWriterFactory.CreateJsonReader(stream, XmlDictionaryReaderQuotas.Max);
 172                         r.LameSilverlightLiteralParser = true;
 173                         return ReadObject(r);
 174 #else
 175                         return ReadObject (JsonReaderWriterFactory.CreateJsonReader (stream, new XmlDictionaryReaderQuotas ()));
 176 #endif
 177                 }
 178
 179                 public override object ReadObject (XmlDictionaryReader reader)
 180                 {
 181                         return ReadObject (reader, true);
 182                 }
 183
 184                 public override object ReadObject (XmlReader reader)
 185                 {
 186                         return ReadObject (reader, true);
 187                 }
 188
 189                 public override object ReadObject (XmlDictionaryReader reader, bool verifyObjectName)
 190                 {
 191                         return ReadObject ((XmlReader) reader, verifyObjectName);
 192                 }
 193
 194                 public override object ReadObject (XmlReader reader, bool verifyObjectName)
 195                 {
 196                         if (reader == null)
 197                                 throw new ArgumentNullException ("reader");
 198                         try {
 199                                 if (verifyObjectName && !IsStartObject (reader))
 200                                         throw new SerializationException (String.Format ("Expected element was '{0}', but the actual input element was '{1}' in namespace '{2}'", root, reader.LocalName, reader.NamespaceURI));
 201
 202                                 return new JsonSerializationReader (this, reader, type, verifyObjectName).ReadRoot ();
 203                         } catch (SerializationException) {
 204                                 throw;
 205                         } catch (InvalidDataContractException) {
 206                                 throw;
 207                         } catch (System.Reflection.TargetInvocationException ex) {
 208                                 throw ex.InnerException;
 209                         } catch (Exception ex) {
 210                                 throw new SerializationException ("Deserialization has failed", ex);
 211                         }
 212                 }
 213
 214                 public override void WriteObject (Stream stream, object graph)
 215                 {
 216                         using (var xw = JsonReaderWriterFactory.CreateJsonWriter (stream))
 217                                 WriteObject (xw, graph);
 218                 }
 219
 220                 public override void WriteObject (XmlWriter writer, object graph)
 221                 {
 222                         try {
 223                                 WriteStartObject (writer, graph);
 224                                 WriteObjectContent (writer, graph);
 225                                 WriteEndObject (writer);
 226                         } catch (NotImplementedException) {
 227                                 throw;
 228                         } catch (InvalidDataContractException) {
 229                                 throw;
 230                         } catch (Exception ex) {
 231                                 throw new SerializationException (String.Format ("There was an error during serialization for object of type {0}", graph != null ? graph.GetType () : null), ex);
 232                         }
 233                 }
 234
 235                 public override void WriteObject (XmlDictionaryWriter writer, object graph)
 236                 {
 237                         WriteObject ((XmlWriter) writer, graph);
 238                 }
 239
 240                 public override void WriteStartObject (XmlDictionaryWriter writer, object graph)
 241                 {
 242                         WriteStartObject ((XmlWriter) writer, graph);
 243                 }
 244
 245                 public override void WriteStartObject (XmlWriter writer, object graph)
 246                 {
 247                         if (writer == null)
 248                                 throw new ArgumentNullException ("writer");
 249                         writer.WriteStartElement (root);
 250                 }
 251
 252                 public override void WriteObjectContent (XmlDictionaryWriter writer, object graph)
 253                 {
 254                         WriteObjectContent ((XmlWriter) writer, graph);
 255                 }
 256
 257                 public override void WriteObjectContent (XmlWriter writer, object graph)
 258                 {
 259                         new JsonSerializationWriter (this, writer, type, always_emit_type).WriteObjectContent (graph, true, false);
 260                 }
 261
 262                 public override void WriteEndObject (XmlDictionaryWriter writer)
 263                 {
 264                         WriteEndObject ((XmlWriter) writer);
 265                 }
 266
 267                 public override void WriteEndObject (XmlWriter writer)
 268                 {
 269                         if (writer == null)
 270                                 throw new ArgumentNullException ("writer");
 271                         writer.WriteEndElement ();
 272                 }
 273
 274 #if NET_4_5
 275                 [MonoTODO]
 276                 public DateTimeFormat DateTimeFormat {
 277                         get { throw new NotImplementedException (); }
 278                 }
 279
 280                 [MonoTODO]
 281                 public EmitTypeInformation EmitTypeInformation {
 282                         get { throw new NotImplementedException (); }
 283                 }
 284
 285                 [MonoTODO]
 286                 public bool SerializeReadOnlyTypes {
 287                         get { throw new NotImplementedException (); }
 288                 }
 289
 290                 [MonoTODO]
 291                 public bool UseSimpleDictionaryFormat {
 292                         get { throw new NotImplementedException (); }
 293                 }
 294 #endif
 295
 296         }
 297 }