ReturnMessage.cs :  » 2.6.4-mono-.net-core » System.Runtime » System » Runtime » Remoting » Messaging » C# / CSharp Open Source

//
// System.Runtime.Remoting.Messaging.ReturnMessage.cs
//
// Author:
//   Dietmar Maurer (dietmar@ximian.com)
//
// (C) Ximian, Inc.  http://www.ximian.com
//

//
// Copyright (C) 2004 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.Collections;
using System.Reflection;
using System.IO;

namespace System.Runtime.Remoting.Messaging{
  [System.Runtime.InteropServices.ComVisible (true)]
  public class ReturnMessage : IMethodReturnMessage, IMethodMessage, IMessage, IInternalMessage 
  {
    object[] _outArgs;
    object[] _args;
    int _outArgsCount;
    LogicalCallContext _callCtx;
    object _returnValue;
    string _uri;
    Exception _exception;
    MethodBase _methodBase;
    string _methodName;
    Type [] _methodSignature;
    string _typeName;
    MethodReturnDictionary _properties;
    Identity _targetIdentity;
    ArgInfo _inArgInfo;

    public ReturnMessage (object ret, object [] outArgs,
             int outArgsCount, LogicalCallContext callCtx,
             IMethodCallMessage mcm)
    {
      // outArgCount tells how many values of outArgs are valid

      _returnValue = ret;
      _args = outArgs;
      _outArgsCount = outArgsCount;
      _callCtx = callCtx;
      if (mcm != null) {
        _uri = mcm.Uri;
        _methodBase = mcm.MethodBase;
      }
      if (_args == null) _args = new object [outArgsCount];
    }

    public ReturnMessage (Exception e, IMethodCallMessage mcm)
    {
      _exception = e;
      
      if (mcm != null) {
        _methodBase = mcm.MethodBase;
        _callCtx = mcm.LogicalCallContext;
      }
      _args = new object[0];  // .NET does this
    }
    
    public int ArgCount {
      get {
        return _args.Length;
      }
    }
    
    public object [] Args {
      get {
        return _args;
      }
    }
    
    public bool HasVarArgs {
      get {
        if (_methodBase == null) return false;
        else return (_methodBase.CallingConvention | CallingConventions.VarArgs) != 0;
      }
    }

    public LogicalCallContext LogicalCallContext {
      get {
        if (_callCtx == null)
          _callCtx = new LogicalCallContext ();
        return _callCtx;
      }
    }

    public MethodBase MethodBase {
      get {
        return _methodBase;
      }
    }

    public string MethodName {
      get {
        if (_methodBase != null && _methodName == null)
          _methodName = _methodBase.Name;
        return _methodName;
      }
    }

    public object MethodSignature {
      get {
        if (_methodBase != null && _methodSignature == null) {
          ParameterInfo[] parameters = _methodBase.GetParameters();
          _methodSignature = new Type [parameters.Length];
          for (int n=0; n<parameters.Length; n++)
            _methodSignature[n] = parameters[n].ParameterType;
        }
        return _methodSignature;
      }
    }

    public virtual IDictionary Properties {
      get {
        if (_properties == null) _properties = new MethodReturnDictionary (this);
        return _properties;
      }
    }

    public string TypeName {
      get {

        // lazily fill in _typeName from _methodBase
        if (_methodBase != null && _typeName == null)
          _typeName = _methodBase.DeclaringType.AssemblyQualifiedName;
        return _typeName;

      }
    }

    public string Uri {
      get {
        return _uri;
      }

      set {
        _uri = value;
      }
    }

    string IInternalMessage.Uri {
      get { return Uri; }
      set { Uri = value; }
    }

    public object GetArg (int argNum)
    {
      return _args [argNum];
    }
    
    public string GetArgName (int index)
    {
      return _methodBase.GetParameters()[index].Name;
    }

    public Exception Exception {
      get {
        return _exception;
      }
    }

    public int OutArgCount {
      get {
        if (_args == null || _args.Length == 0) return 0;
        if (_inArgInfo == null) _inArgInfo = new ArgInfo (MethodBase, ArgInfoType.Out);
        return _inArgInfo.GetInOutArgCount ();
      }
    }

    public object [] OutArgs {
      get {
        if (_outArgs == null && _args != null) {
          if (_inArgInfo == null) _inArgInfo = new ArgInfo (MethodBase, ArgInfoType.Out);
          _outArgs = _inArgInfo.GetInOutArgs (_args);
        }          
        return _outArgs;
      }
    }

    public virtual object ReturnValue {
      get {
        return _returnValue;
      }
    }

    public object GetOutArg (int argNum)
    {
      if (_inArgInfo == null) _inArgInfo = new ArgInfo (MethodBase, ArgInfoType.Out);
      return _args[_inArgInfo.GetInOutArgIndex (argNum)];
    }

    public string GetOutArgName (int index)
    {
      if (_inArgInfo == null) _inArgInfo = new ArgInfo (MethodBase, ArgInfoType.Out);
      return _inArgInfo.GetInOutArgName (index);
    }

    Identity IInternalMessage.TargetIdentity
    {
      get { return _targetIdentity; }
      set { _targetIdentity = value; }
    }

  }
}