class/corlib/System.Reflection/Pointer.cs

   1 //
   2 // System.Reflection/Pointer.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2003 Ximian, Inc.  http://www.ximian.com
   8 //
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System;
  35 using System.Reflection;
  36 using System.Globalization;
  37 using System.Runtime.CompilerServices;
  38 using System.Runtime.Serialization;
  39 using System.Runtime.InteropServices;
  40
  41 namespace System.Reflection {
  42
  43         [ComVisible (true)]
  44         [Serializable]
  45         [CLSCompliant(false)]
  46         public unsafe sealed class Pointer : ISerializable {
  47                 void *data;
  48 #pragma warning disable 169, 414
  49                 Type type;
  50 #pragma warning restore 169, 414
  51
  52                 private Pointer () {
  53                 }
  54
  55                 public static object Box (void *ptr, Type type)
  56                 {
  57                         if (type == null)
  58                                 throw new ArgumentNullException ("type");
  59                         if (!type.IsPointer)
  60                                 throw new ArgumentException ("type");
  61                         Pointer res = new Pointer ();
  62                         res.data = ptr;
  63                         res.type = type;
  64                         return res;
  65                 }
  66
  67                 public static void* Unbox (object ptr)
  68                 {
  69                         Pointer p = ptr as Pointer;
  70                         if (p == null)
  71                                 throw new ArgumentException ("ptr");
  72                         return p.data;
  73                 }
  74
  75                 void ISerializable.GetObjectData (SerializationInfo info, StreamingContext context)
  76                 {
  77                         throw new NotSupportedException ("Pointer deserializatioon not supported.");
  78                 }
  79         }
  80 }