905e96939691b98910183a733a5e8670100c83b5
[mono.git] / mcs / class / corlib / System / RuntimeMethodHandle.cs
1 //
2 // System.RuntimeMethodHandle.cs
3 //
4 // Author:
5 //   Miguel de Icaza (miguel@ximian.com)
6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
7 //
8 // (C) Ximian, Inc.  http://www.ximian.com
9 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
10 //
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
18 // 
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
21 // 
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 //
30
31 using System.Reflection;
32 using System.Runtime.Serialization;
33 using System.Runtime.CompilerServices;
34 using System.Security.Permissions;
35
36 #if NET_2_0
37 using System.Runtime.ConstrainedExecution;
38 #endif
39
40 namespace System
41 {
42         [MonoTODO ("Serialization needs tests")]
43         [Serializable]
44         public struct RuntimeMethodHandle : ISerializable
45         {
46                 IntPtr value;
47
48                 internal RuntimeMethodHandle (IntPtr v)
49                 {
50                         value = v;
51                 }
52
53                 RuntimeMethodHandle (SerializationInfo info, StreamingContext context)
54                 {
55                         if (info == null)
56                                 throw new ArgumentNullException ("info");
57
58                         MonoMethod mm = ((MonoMethod) info.GetValue ("MethodObj", typeof (MonoMethod)));
59                         value = mm.MethodHandle.Value;
60                         if (value == IntPtr.Zero)
61                                 throw new SerializationException (Locale.GetText ("Insufficient state."));
62                 }
63
64                 public IntPtr Value {
65                         get {
66                                 return value;
67                         }
68                 }
69
70                 // This is from ISerializable
71                 public void GetObjectData (SerializationInfo info, StreamingContext context)
72                 {
73                         if (info == null)
74                                 throw new ArgumentNullException ("info");
75
76                         info.AddValue ("MethodObj", (MonoMethod) MethodBase.GetMethodFromHandle (this), typeof (MonoMethod));
77                 }
78
79                 [MethodImpl (MethodImplOptions.InternalCall)]
80                 static extern IntPtr GetFunctionPointer (IntPtr m);
81
82                 [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
83                 public IntPtr GetFunctionPointer ()
84                 {
85                         return GetFunctionPointer (value);
86                 }
87
88 #if NET_2_0
89                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
90 #endif
91                 public override bool Equals (object obj)
92                 {
93                         if (obj == null || GetType () != obj.GetType ())
94                                 return false;
95
96                         return value == ((RuntimeMethodHandle)obj).Value;
97                 }
98
99 #if NET_2_0
100                 [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
101 #endif
102                 public bool Equals (RuntimeMethodHandle handle)
103                 {
104                         return value == handle.Value;
105                 }
106
107                 public override int GetHashCode ()
108                 {
109                         return value.GetHashCode ();
110                 }
111         }
112 }