mcs/class/corlib/System.Runtime.Remoting.Messaging/ArgInfo.cs

   1 //
   2 // System.Runtime.Remoting.Messaging.ArgInfo.cs
   3 //
   4 // Author: Lluis Sanchez Gual (lluis@ideary.com)
   5 //
   6 // 2003 (C) Lluis Sanchez Gual
   7 //
   8
   9 //
  10 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Reflection;
  34
  35 namespace System.Runtime.Remoting.Messaging
  36 {
  37         internal enum ArgInfoType : byte { In, Out };
  38
  39         internal class ArgInfo
  40         {
  41                 int[] _paramMap;
  42                 int _inoutArgCount;
  43                 MethodBase _method;
  44
  45                 public ArgInfo(MethodBase method, ArgInfoType type)
  46                 {
  47                         _method = method;
  48
  49                         ParameterInfo[] parameters = _method.GetParameters();
  50                         _paramMap = new int[parameters.Length];
  51                         _inoutArgCount = 0;
  52
  53                         if (type == ArgInfoType.In) {
  54                                 for (int n=0; n<parameters.Length; n++)
  55                                         if (!parameters[n].ParameterType.IsByRef) { _paramMap [_inoutArgCount++] = n; }
  56                         }
  57                         else {
  58                                 for (int n=0; n<parameters.Length; n++)
  59                                         if (parameters[n].ParameterType.IsByRef || parameters[n].IsOut)
  60                                         { _paramMap [_inoutArgCount++] = n; }
  61                         }
  62                 }
  63
  64                 public int GetInOutArgIndex (int inoutArgNum)
  65                 {
  66                         return _paramMap[inoutArgNum];
  67                 }
  68
  69                 public virtual string GetInOutArgName (int index)
  70                 {
  71                         return _method.GetParameters()[_paramMap[index]].Name;
  72                 }
  73
  74                 public int GetInOutArgCount ()
  75                 {
  76                         return _inoutArgCount;
  77                 }
  78
  79                 public object [] GetInOutArgs (object[] args)
  80                 {
  81                         object[] inoutArgs = new object[_inoutArgCount];
  82                         for (int n=0; n<_inoutArgCount; n++)
  83                                 inoutArgs[n] = args[_paramMap[n]];
  84                         return inoutArgs;
  85                 }
  86         }
  87 }