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

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Runtime 
System.Runtime » System » Runtime » Remoting » Messaging » MonoMethodMessage.cs
//
// System.Runtime.Remoting.Messaging.MonoMethodMessage.cs
//
// Author:
//   Dietmar Maurer (dietmar@ximian.com)
//   Patrik Torstensson
//
// (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.Runtime.CompilerServices;

namespace System.Runtime.Remoting.Messaging{
  
  [Serializable]
  internal class MonoMethodMessage : IMethodCallMessage, IMethodReturnMessage, IInternalMessage {

#pragma warning disable 649
    #region keep in sync with MonoMessage in object-internals.h
    MonoMethod method;
    object []  args;
    string []  names;
    byte [] arg_types; /* 1 == IN; 2 == OUT; 3 == INOUT; 4 == COPY OUT */
    public LogicalCallContext ctx;
    public object rval;
    public Exception exc;
    AsyncResult asyncResult;
    CallType call_type;
    #endregion
#pragma warning restore 649

    string uri;

    MethodCallDictionary properties;

    Type[] methodSignature;

    Identity identity;


    [MethodImplAttribute(MethodImplOptions.InternalCall)]
    internal extern void InitMessage (MonoMethod method, object [] out_args);

    public MonoMethodMessage (MethodBase method, object [] out_args)
    {
      if (method != null)
        InitMessage ((MonoMethod)method, out_args);
      else
        args = null;
    }

    public MonoMethodMessage (Type type, string method_name, object [] in_args)
    {
      // fixme: consider arg types
      MethodInfo minfo = type.GetMethod (method_name);
      
      InitMessage ((MonoMethod)minfo, null);

      int len = in_args.Length;
      for (int i = 0; i < len; i++) {
        args [i] = in_args [i];
      }
    }
    
    public IDictionary Properties {
      get {
        if (properties == null) properties = new MethodCallDictionary (this);
        return properties;
      }
    }

    public int ArgCount {
      get {
        if (CallType == CallType.EndInvoke)
          return -1;
          
        if (null == args)
          return 0;

        return args.Length;
      }
    }
    
    public object [] Args {
      get {
        return args;
      }
    }
    
    public bool HasVarArgs {
      get {
        return false;
      }
    }

    public LogicalCallContext LogicalCallContext {
      get {
        return ctx;
      }

      set {
        ctx = value;
      }
    }

    public MethodBase MethodBase {
      get {
        return method;
      }
    }

    public string MethodName {
      get {
        if (null == method)
          return String.Empty;

        return method.Name;
      }
    }

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

    public string TypeName {
      get {
        if (null == method)
          return String.Empty;

        return method.DeclaringType.AssemblyQualifiedName;
      }
    }

    public string Uri {
      get {
        return uri;
      }

      set {
        uri = value;
      }
    }

    public object GetArg (int arg_num)
    {
      if (null == args)
        return null;

      return args [arg_num];
    }
    
    public string GetArgName (int arg_num)
    {
      if (null == args)
        return String.Empty;

      return names [arg_num];
    }

    public int InArgCount {
      get {
        if (CallType == CallType.EndInvoke)
          return -1;

        if (null == args)
          return 0;

        int count = 0;

        foreach (byte t in arg_types) {
          if ((t & 1) != 0) count++;
            
        }
        return count;
      }
    }
    
    public object [] InArgs {
      get {                
        int i, j, count = InArgCount;
        object [] inargs = new object [count];

        i = j = 0;
        foreach (byte t in arg_types) {
          if ((t & 1) != 0)
            inargs [j++] = args [i];
          i++;
        }
        
        return inargs;
      }
    }
    
    public object GetInArg (int arg_num)
    {
      int i = 0, j = 0;
      foreach (byte t in arg_types) {
        if ((t & 1) != 0) {
          if (j++ == arg_num)
            return args [i]; 
        }
        i++;
      }
      return null;
    }
    
    public string GetInArgName (int arg_num)
    {
      int i = 0, j = 0;
      foreach (byte t in arg_types) {
        if ((t & 1) != 0) {
          if (j++ == arg_num)
            return names [i]; 
        }
        i++;
      }
      return null;
    }

    public Exception Exception {
      get {
        return exc;
      }
    }
    
    public int OutArgCount {
      get {
        if (null == args)
          return 0;
                    
        int count = 0;

        foreach (byte t in arg_types) {
          if ((t & 2) != 0) count++;
            
        }
        return count;
      }
    }
    
    public object [] OutArgs {
      get {
        if (null == args)
          return null;

        int i, j, count = OutArgCount;
        object [] outargs = new object [count];

        i = j = 0;
        foreach (byte t in arg_types) {
          if ((t & 2) != 0)
            outargs [j++] = args [i];
          i++;
        }
        
        return outargs;
      }
    }
    
    public object ReturnValue {
      get {
        return rval;
      }
    }

    public object GetOutArg (int arg_num)
    {
      int i = 0, j = 0;
      foreach (byte t in arg_types) {
        if ((t & 2) != 0) {
          if (j++ == arg_num)
            return args [i]; 
        }
        i++;
      }
      return null;
    }
    
    public string GetOutArgName (int arg_num)
    {
      int i = 0, j = 0;
      foreach (byte t in arg_types) {
        if ((t & 2) != 0) {
          if (j++ == arg_num)
            return names [i]; 
        }
        i++;
      }
      return null;
    }

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

    public bool IsAsync
    {
      get { return asyncResult != null; }
    }

    public AsyncResult AsyncResult
    {
      get { return asyncResult; }
    }

    internal CallType CallType
    {
      get
      {
        // FIXME: ideally, the OneWay type would be set by the runtime
        
        if (call_type == CallType.Sync && RemotingServices.IsOneWay (method))
          call_type = CallType.OneWay;
        return call_type;
      }
    }
    
    public bool NeedsOutProcessing (out int outCount) {
      bool res = false;
      outCount = 0;
      foreach (byte t in arg_types) {
        if ((t & 2) != 0)
          outCount++;
        else if ((t & 4) != 0)
          res = true;
      }
      return outCount > 0 || res;
    }
    
  }

  internal enum CallType: int
  {
    Sync = 0,
    BeginInvoke = 1,
    EndInvoke = 2,
    OneWay = 3
  }
}

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