class/corlib/System.Reflection/MemberInfoSerializationHolder.cs

   1 // MemberInfoSerializationHolder.cs.cs
   2 //
   3 // Author:
   4 //  Patrik Torstensson
   5 //  Robert Jordan <robertj@gmx.net>
   6 //
   7 // (C) 2003 Patrik Torstensson
   8
   9 //
  10 // Copyright (C) 2004-2007 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Runtime.Serialization;
  34
  35 namespace System.Reflection
  36 {
  37         [Serializable]
  38         internal class MemberInfoSerializationHolder : IObjectReference, ISerializable
  39         {
  40                 const BindingFlags DefaultBinding = BindingFlags.Instance | BindingFlags.Static |
  41                         BindingFlags.Public | BindingFlags.NonPublic;
  42
  43                 readonly string         _memberName;
  44                 readonly string         _memberSignature;
  45                 readonly MemberTypes    _memberType;
  46                 readonly Type           _reflectedType;
  47                 readonly Type[]          _genericArguments;
  48
  49                 MemberInfoSerializationHolder(SerializationInfo info, StreamingContext ctx)
  50                 {
  51                         string assemblyName;
  52                         string typeName;
  53
  54                         assemblyName = info.GetString("AssemblyName");
  55                         typeName = info.GetString("ClassName");
  56
  57                         _memberName = info.GetString("Name");
  58                         _memberSignature = info.GetString("Signature");
  59                         _memberType = (MemberTypes) info.GetInt32("MemberType");
  60
  61                         try {
  62                                 _genericArguments = null;
  63
  64                                 // FIXME: this doesn't work at present. It seems that
  65                                 // ObjectManager doesn't cope with nested IObjectReferences.
  66                                 // _genericArguments = (Type[]) info.GetValue("GenericArguments", typeof(Type[]));
  67                         } catch (SerializationException) {
  68                                 // expected (old NET_1_0 protocol)
  69                         }
  70
  71                         // Load type
  72                         Assembly asm = Assembly.Load(assemblyName);
  73
  74                         _reflectedType = asm.GetType(typeName, true, true);
  75                 }
  76
  77                 public static void Serialize(SerializationInfo info, String name, Type klass, String signature, MemberTypes type)
  78                 {
  79                         Serialize (info, name, klass, signature, type, null);
  80                 }
  81
  82                 public static void Serialize(SerializationInfo info, String name, Type klass, String signature, MemberTypes type, Type[] genericArguments)
  83                 {
  84                         info.SetType( typeof(MemberInfoSerializationHolder));
  85
  86                         info.AddValue("AssemblyName", klass.Module.Assembly.FullName, typeof(String));
  87                         info.AddValue("ClassName", klass.FullName, typeof(String));
  88
  89                         info.AddValue("Name", name, typeof(String));
  90                         info.AddValue("Signature", signature, typeof(String));
  91                         info.AddValue("MemberType",(int)type);
  92                         info.AddValue("GenericArguments", genericArguments, typeof (Type[]));
  93                 }
  94
  95                 public void GetObjectData(SerializationInfo info, StreamingContext context)
  96                 {
  97                         throw new NotSupportedException();
  98                 }
  99
 100                 public object GetRealObject(StreamingContext context)
 101                 {
 102                         switch (_memberType)
 103                         {
 104                                 case MemberTypes.Constructor:
 105                                         ConstructorInfo [] ctors;
 106
 107                                         ctors = _reflectedType.GetConstructors (DefaultBinding);
 108                                         for (int i = 0; i < ctors.Length; i++)
 109                                                 if ( ctors[i].ToString().Equals(_memberSignature))
 110                                                         return ctors[i];
 111
 112                                         throw new SerializationException (String.Format ("Could not find constructor '{0}' in type '{1}'", _memberSignature, _reflectedType));
 113
 114                                 case MemberTypes.Method:
 115                                         MethodInfo [] methods;
 116
 117                                         methods = _reflectedType.GetMethods(DefaultBinding);
 118                                         for (int i = 0; i < methods.Length; i++)
 119                                                 if ((methods[i]).ToString().Equals(_memberSignature))
 120                                                         return methods[i];
 121                                                 else if (_genericArguments != null &&
 122                                                         methods[i].IsGenericMethod &&
 123                                                         methods[i].GetGenericArguments().Length == _genericArguments.Length) {
 124
 125                                                         MethodInfo mi = methods[i].MakeGenericMethod(_genericArguments);
 126
 127                                                         if (mi.ToString() == _memberSignature)
 128                                                                 return mi;
 129                                                 }
 130
 131                                         throw new SerializationException (String.Format ("Could not find method '{0}' in type '{1}'", _memberSignature, _reflectedType));
 132
 133                                 case MemberTypes.Field:
 134                                         FieldInfo fi = _reflectedType.GetField (_memberName, DefaultBinding);
 135
 136                                         if (fi != null)
 137                                                 return fi;
 138
 139                                         throw new SerializationException (String.Format ("Could not find field '{0}' in type '{1}'", _memberName, _reflectedType));
 140
 141                                 case MemberTypes.Property:
 142                                         PropertyInfo pi = _reflectedType.GetProperty (_memberName, DefaultBinding);
 143
 144                                         if (pi != null)
 145                                                 return pi;
 146
 147                                         throw new SerializationException (String.Format ("Could not find property '{0}' in type '{1}'", _memberName, _reflectedType));
 148
 149                                 case MemberTypes.Event:
 150                                         EventInfo ei = _reflectedType.GetEvent (_memberName, DefaultBinding);
 151
 152                                         if (ei != null)
 153                                                 return ei;
 154
 155                                         throw new SerializationException (String.Format ("Could not find event '{0}' in type '{1}'", _memberName, _reflectedType));
 156
 157                                 default:
 158                                         throw new SerializationException (String.Format ("Unhandled MemberType {0}",  _memberType));
 159                         }
 160                 }
 161         }
 162 }