MemberInfoSerializationHolder.cs :  » 2.6.4-mono-.net-core » System.Reflection » System » Reflection » C# / CSharp Open Source

// MemberInfoSerializationHolder.cs.cs
//
// Author:
//  Patrik Torstensson
//  Robert Jordan <robertj@gmx.net>
//
// (C) 2003 Patrik Torstensson

//
// Copyright (C) 2004-2007 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.Runtime.Serialization;

namespace System.Reflection{
  [Serializable]
  internal class MemberInfoSerializationHolder : IObjectReference, ISerializable
  {
    const BindingFlags DefaultBinding = BindingFlags.Instance | BindingFlags.Static |
      BindingFlags.Public | BindingFlags.NonPublic;

    readonly string    _memberName;
    readonly string    _memberSignature;
    readonly MemberTypes  _memberType;
    readonly Type    _reflectedType;
    readonly Type[]          _genericArguments;

    MemberInfoSerializationHolder(SerializationInfo info, StreamingContext ctx)
    {
      string assemblyName;
      string typeName;

      assemblyName = info.GetString("AssemblyName");
      typeName = info.GetString("ClassName");

      _memberName = info.GetString("Name");
      _memberSignature = info.GetString("Signature");
      _memberType = (MemberTypes) info.GetInt32("MemberType");

      try {
        _genericArguments = null;

        // FIXME: this doesn't work at present. It seems that
        // ObjectManager doesn't cope with nested IObjectReferences.
        // _genericArguments = (Type[]) info.GetValue("GenericArguments", typeof(Type[]));
      } catch (SerializationException) {
        // expected (old NET_1_0 protocol)
      }

      // Load type
      Assembly asm = Assembly.Load(assemblyName);

      _reflectedType = asm.GetType(typeName, true, true);
    }

    public static void Serialize(SerializationInfo info, String name, Type klass, String signature, MemberTypes type)
    {
      Serialize (info, name, klass, signature, type, null);
    }

    public static void Serialize(SerializationInfo info, String name, Type klass, String signature, MemberTypes type, Type[] genericArguments)
    {
      info.SetType( typeof(MemberInfoSerializationHolder));

      info.AddValue("AssemblyName", klass.Module.Assembly.FullName, typeof(String));
      info.AddValue("ClassName", klass.FullName, typeof(String));

      info.AddValue("Name", name, typeof(String));
      info.AddValue("Signature", signature, typeof(String));
      info.AddValue("MemberType",(int)type);
      info.AddValue("GenericArguments", genericArguments, typeof (Type[]));
    }

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
      throw new NotSupportedException();
    }

    public object GetRealObject(StreamingContext context)
    {
      switch (_memberType) 
      {
        case MemberTypes.Constructor:
          ConstructorInfo [] ctors;

          ctors = _reflectedType.GetConstructors (DefaultBinding);
          for (int i = 0; i < ctors.Length; i++) 
            if ( ctors[i].ToString().Equals(_memberSignature)) 
              return ctors[i];

          throw new SerializationException (String.Format ("Could not find constructor '{0}' in type '{1}'", _memberSignature, _reflectedType));

        case MemberTypes.Method:
          MethodInfo [] methods;

          methods = _reflectedType.GetMethods(DefaultBinding);
          for (int i = 0; i < methods.Length; i++) 
            if ((methods[i]).ToString().Equals(_memberSignature)) 
              return methods[i];
            else if (_genericArguments != null &&
              methods[i].IsGenericMethod &&
              methods[i].GetGenericArguments().Length == _genericArguments.Length) {

              MethodInfo mi = methods[i].MakeGenericMethod(_genericArguments);

              if (mi.ToString() == _memberSignature)
                return mi;
            }

          throw new SerializationException (String.Format ("Could not find method '{0}' in type '{1}'", _memberSignature, _reflectedType));

        case MemberTypes.Field:
          FieldInfo fi = _reflectedType.GetField (_memberName, DefaultBinding);

          if (fi != null)
            return fi;

          throw new SerializationException (String.Format ("Could not find field '{0}' in type '{1}'", _memberName, _reflectedType));

        case MemberTypes.Property:
          PropertyInfo pi = _reflectedType.GetProperty (_memberName, DefaultBinding);

          if (pi != null)
            return pi;

          throw new SerializationException (String.Format ("Could not find property '{0}' in type '{1}'", _memberName, _reflectedType));

        case MemberTypes.Event:
          EventInfo ei = _reflectedType.GetEvent (_memberName, DefaultBinding);

          if (ei != null)
            return ei;

          throw new SerializationException (String.Format ("Could not find event '{0}' in type '{1}'", _memberName, _reflectedType));

        default:
          throw new SerializationException (String.Format ("Unhandled MemberType {0}",  _memberType));
      }
    }
  }
}