mcs/class/System.ServiceModel.Web/System.Runtime.Serialization.Json/DataContractJsonSerializer_2_1.cs

   1 //
   2 // DataContractJsonSerializer.cs (for Moonlight profile)
   3 //
   4 // Authors:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // Copyright (C) 2007-2008, 2010 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Collections.Generic;
  32 using System.Collections.ObjectModel;
  33 using System.IO;
  34 using System.Security;
  35 using System.Xml;
  36
  37 namespace System.Runtime.Serialization.Json {
  38
  39         public sealed class DataContractJsonSerializer {
  40
  41                 private Type type;
  42                 private ReadOnlyCollection<Type> known_types;
  43
  44                 public DataContractJsonSerializer (Type type) :
  45                         this (type, null)
  46                 {
  47                 }
  48
  49                 [MonoTODO ("The 'knownTypes' parameter is unused (except as a property)")]
  50                 public DataContractJsonSerializer (Type type, IEnumerable<Type> knownTypes)
  51                 {
  52                         if (type == null)
  53                                 throw new ArgumentNullException ("type");
  54
  55                         this.type = type;
  56                         List<Type> types = new List<Type> ();
  57                         if (knownTypes != null)
  58                                 types.AddRange (knownTypes);
  59                         known_types = new ReadOnlyCollection<Type> (types);
  60                 }
  61
  62                 public ReadOnlyCollection<Type> KnownTypes {
  63                         get { return known_types; }
  64                 }
  65
  66                 // used by JsonSerializationReader.cs
  67                 internal int MaxItemsInObjectGraph {
  68                         get { return Int32.MaxValue; }
  69                 }
  70
  71                 public object ReadObject (Stream stream)
  72                 {
  73                         var r = (JsonReader) JsonReaderWriterFactory.CreateJsonReader (stream, XmlDictionaryReaderQuotas.Max);
  74                         r.LameSilverlightLiteralParser = true;
  75
  76                         try {
  77                                 r.MoveToContent ();
  78                                 if (!r.IsStartElement ("root", String.Empty)) {
  79                                         throw new SerializationException (
  80                                                 String.Format ("Expected element was '{0}', but the actual input element was '{1}' in namespace '{2}'",
  81                                                 "root", r.LocalName, r.NamespaceURI));
  82                                 }
  83                                 return new JsonSerializationReader (this, r, type, true).ReadRoot ();
  84                         } catch (FieldAccessException fae) {
  85                                 throw new SecurityException ("Deserialization has failed", fae);
  86                         } catch (MethodAccessException mae) {
  87                                 throw new SecurityException ("Deserialization has failed", mae);
  88                         } catch (SerializationException) {
  89                                 throw;
  90                         } catch (Exception ex) {
  91                                 throw new SerializationException ("Deserialization has failed", ex);
  92                         }
  93                 }
  94
  95                 public void WriteObject (Stream stream, object graph)
  96                 {
  97                         using (var writer = JsonReaderWriterFactory.CreateJsonWriter (stream)) {
  98                                 try {
  99                                         writer.WriteStartElement ("root");
 100                                         new JsonSerializationWriter (this, writer, type, false).WriteObjectContent (graph, true, false);
 101                                         writer.WriteEndElement ();
 102                                 } catch (FieldAccessException fae) {
 103                                         throw new SecurityException ("Serialization has failed", fae);
 104                                 } catch (MethodAccessException mae) {
 105                                         throw new SecurityException ("Serialization has failed", mae);
 106                                 } catch (NotImplementedException) {
 107                                         throw;
 108                                 } catch (InvalidDataContractException) {
 109                                         throw;
 110                                 } catch (Exception ex) {
 111                                         throw new SerializationException (String.Format ("There was an error during serialization for object of type {0}", graph != null ? graph.GetType () : null), ex);
 112                                 }
 113                         }
 114                 }
 115         }
 116 }
 117