DefaultOperationInvoker.cs :  » 2.6.4-mono-.net-core » System.ServiceModel » System » ServiceModel » Dispatcher » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.ServiceModel 
System.ServiceModel » System » ServiceModel » Dispatcher » DefaultOperationInvoker.cs
//
// DefaultOperationInvoker.cs
//
// Author: Atsushi Enomoto (atsushi@ximian.com)
//
// Copyright (C) 2009 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.Generic;
using System.ServiceModel;
using System.ServiceModel.Description;
using System.Reflection;
using System.Threading;

namespace System.ServiceModel.Dispatcher{
  class DefaultOperationInvoker : IOperationInvoker
  {
    readonly OperationDescription od;
    readonly ParameterInfo [] in_params, out_params;
    readonly bool is_synchronous;

    public DefaultOperationInvoker (OperationDescription od)
    {
      this.od = od;
      is_synchronous = od.SyncMethod != null;
      var mi = od.SyncMethod ?? od.BeginMethod;
      var il = new List<ParameterInfo> ();
      var ol = new List<ParameterInfo> ();
      var pl = mi.GetParameters ();
      int count = mi == od.BeginMethod ? pl.Length - 2 : pl.Length;
      for (int i = 0; i < count; i++) {
        var pi = pl [i];
        if (!pi.IsOut)
          il.Add (pi);
        if (pi.IsOut || pi.ParameterType.IsByRef)
          ol.Add (pi);
      }
      in_params = il.ToArray ();
      out_params = ol.ToArray ();
    }

    public bool IsSynchronous {
      get { return is_synchronous; }
    }

    public object [] AllocateInputs ()
    {
      return new object [in_params.Length];
    }

    public object Invoke (object instance, object [] inputs, out object [] outputs)
    {
      var arr = new object [od.SyncMethod.GetParameters ().Length];
      for (int i = 0; i < in_params.Length; i++)
        arr [in_params [i].Position] = inputs [i];

      var ret = od.SyncMethod.Invoke (instance, arr);

      outputs = new object [out_params.Length];
      for (int i = 0; i < out_params.Length; i++)
        outputs [i] = arr [out_params [i].Position];

      return ret;
    }

    public IAsyncResult InvokeBegin (object instance, object [] inputs, AsyncCallback callback, object state)
    {
      var arr = new object [in_params.Length + out_params.Length + 2];
      for (int i = 0; i < in_params.Length; i++)
        arr [in_params [i].Position] = inputs [i];
      arr [arr.Length - 2] = callback;
      arr [arr.Length - 1] = state;
      return new InvokeAsyncResult (arr, (IAsyncResult) od.BeginMethod.Invoke (instance, arr));
    }

    public object InvokeEnd (object instance, out object [] outputs, IAsyncResult result)
    {
      var r = (InvokeAsyncResult) result;
      var ret = od.EndMethod.Invoke (instance, new object [] {r.Source});
      var arr = r.Parameters;
      outputs = new object [out_params.Length];
      for (int i = 0; i < out_params.Length; i++)
        outputs [i] = arr [out_params [i].Position];
      return ret;
    }

    class InvokeAsyncResult : IAsyncResult
    {
      public InvokeAsyncResult (object [] parameters, IAsyncResult source)
      {
        Source = source;
        Parameters = parameters;
      }

      public IAsyncResult Source;
      public object [] Parameters;

      public WaitHandle AsyncWaitHandle {
        get { return Source.AsyncWaitHandle; }
      }
      public bool CompletedSynchronously {
        get { return Source.CompletedSynchronously; }
      }
      public bool IsCompleted {
        get { return Source.IsCompleted; }
      }
      public object AsyncState {
        get { return Source.AsyncState; }
      }
    }
  }
}
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