class/corlib/System.Runtime.Remoting.Messaging/MethodReturnMessageWrapper.cs

   1 //
   2 // System.Runtime.Remoting.Messaging.MethodReturnMessageWrapper.cs
   3 //
   4 // Author: Duncan Mak (duncan@ximian.com)
   5 //         Lluis Sanchez Gual (lluis@ideary.com)
   6 //
   7 // 2002 (C) Copyright, Ximian, Inc.
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.Reflection;
  36 using System.Runtime.Serialization;
  37
  38 namespace System.Runtime.Remoting.Messaging {
  39
  40         [System.Runtime.InteropServices.ComVisible (true)]
  41         public class MethodReturnMessageWrapper : InternalMessageWrapper, IMethodReturnMessage, IMethodMessage, IMessage
  42         {
  43                 object[] _args;
  44                 ArgInfo _outArgInfo;
  45                 DictionaryWrapper _properties;
  46                 Exception _exception;
  47                 object _return;
  48
  49                 public MethodReturnMessageWrapper (IMethodReturnMessage msg)
  50                         : base (msg)
  51                 {
  52                         if (msg.Exception != null) {
  53                                 _exception = msg.Exception;
  54                                 _args = new object[0];
  55                         } else {
  56                                 _args = msg.Args;
  57                                 _return = msg.ReturnValue;
  58                                 if (msg.MethodBase != null)
  59                                         _outArgInfo = new ArgInfo (msg.MethodBase, ArgInfoType.Out);
  60                         }
  61                 }
  62
  63                 public virtual int ArgCount {
  64                         get { return _args.Length; }
  65                 }
  66
  67                 public virtual object [] Args
  68                 {
  69                         get { return _args; }
  70                         set { _args = value; }
  71                 }
  72
  73                 public virtual Exception Exception {
  74                         get { return _exception; }
  75                         set { _exception = value; }
  76                 }
  77
  78                 public virtual bool HasVarArgs {
  79                         get { return ((IMethodReturnMessage)WrappedMessage).HasVarArgs; }
  80                 }
  81
  82                 public virtual LogicalCallContext LogicalCallContext {
  83                         get { return ((IMethodReturnMessage)WrappedMessage).LogicalCallContext; }
  84                 }
  85
  86                 public virtual MethodBase MethodBase {
  87                         get { return ((IMethodReturnMessage)WrappedMessage).MethodBase; }
  88                 }
  89
  90                 public virtual string MethodName {
  91                         get { return ((IMethodReturnMessage)WrappedMessage).MethodName; }
  92                 }
  93
  94                 public virtual object MethodSignature {
  95                         get { return ((IMethodReturnMessage)WrappedMessage).MethodSignature; }
  96                 }
  97
  98                 public virtual int OutArgCount {
  99                         get { return _outArgInfo != null ? _outArgInfo.GetInOutArgCount() : 0; }
 100                 }
 101
 102                 public virtual object[] OutArgs {
 103                         get { return _outArgInfo != null ? _outArgInfo.GetInOutArgs (_args) : _args; }
 104                 }
 105
 106                 public virtual IDictionary Properties
 107                 {
 108                         get {
 109                                 if (_properties == null) _properties = new DictionaryWrapper(this, WrappedMessage.Properties);
 110                                 return _properties;
 111                         }
 112                 }
 113
 114                 public virtual object ReturnValue {
 115                         get { return _return; }
 116                         set { _return = value; }
 117                 }
 118
 119                 public virtual string TypeName {
 120                         get { return ((IMethodReturnMessage)WrappedMessage).TypeName; }
 121                 }
 122
 123                 public string Uri
 124                 {
 125                         get { return ((IMethodReturnMessage)WrappedMessage).Uri; }
 126                         set { Properties["__Uri"] = value; }
 127                 }
 128
 129                 public virtual object GetArg (int argNum)
 130                 {
 131                         return _args[argNum];
 132                 }
 133
 134                 public virtual string GetArgName (int index)
 135                 {
 136                         return ((IMethodReturnMessage)WrappedMessage).GetArgName(index);
 137                 }
 138
 139                 public virtual object GetOutArg (int argNum)
 140                 {
 141                         return _args [_outArgInfo.GetInOutArgIndex (argNum)];
 142                 }
 143
 144                 public virtual string GetOutArgName (int index)
 145                 {
 146                         return _outArgInfo.GetInOutArgName(index);
 147                 }
 148
 149                 class DictionaryWrapper : MethodReturnDictionary
 150                 {
 151                         IDictionary _wrappedDictionary;
 152                         static string[] _keys = new string[] {"__Args", "__Return"};
 153
 154                         public DictionaryWrapper(IMethodReturnMessage message, IDictionary wrappedDictionary) : base (message)
 155                         {
 156                                 _wrappedDictionary = wrappedDictionary;
 157                                 MethodKeys = _keys;
 158                         }
 159
 160                         protected override IDictionary AllocInternalProperties()
 161                         {
 162                                 return _wrappedDictionary;
 163                         }
 164
 165                         protected override void SetMethodProperty (string key, object value)
 166                         {
 167                                 if (key == "__Args") ((MethodReturnMessageWrapper)_message)._args = (object[])value;
 168                                 else if (key == "__Return") ((MethodReturnMessageWrapper)_message)._return = value;
 169                                 else base.SetMethodProperty (key, value);
 170                         }
 171
 172                         protected override object GetMethodProperty (string key)
 173                         {
 174                                 if (key == "__Args") return ((MethodReturnMessageWrapper)_message)._args;
 175                                 else if (key == "__Return") return ((MethodReturnMessageWrapper)_message)._return;
 176                                 else return base.GetMethodProperty (key);
 177                         }
 178                 }
 179         }
 180 }