Merge pull request #546 from QuickJack/master
[mono.git] / mcs / class / corlib / System.Reflection / MethodInfo.cs
1 //
2 // System.Reflection/MethodInfo.cs
3 //
4 // Author:
5 //   Paolo Molaro (lupus@ximian.com)
6 //
7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
9 //
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
17 // 
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
20 // 
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 //
29
30 using System.Diagnostics;
31 using System.Runtime.CompilerServices;
32 using System.Runtime.InteropServices;
33
34 namespace System.Reflection {
35
36         [ComVisible (true)]
37         [ComDefaultInterfaceAttribute (typeof (_MethodInfo))]
38         [Serializable]
39         [ClassInterface(ClassInterfaceType.None)]
40         public abstract class MethodInfo: MethodBase, _MethodInfo {
41
42                 public abstract MethodInfo GetBaseDefinition();
43
44                 internal virtual MethodInfo GetBaseMethod ()
45                 {
46                         return this;
47                 }
48
49                 protected MethodInfo() {
50                 }
51
52
53                 public override MemberTypes MemberType { get {return MemberTypes.Method;} }
54
55                 public virtual Type ReturnType {
56                         get { return null; }
57                 }
58
59                 public abstract ICustomAttributeProvider ReturnTypeCustomAttributes { get; }
60
61                 void _MethodInfo.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
62                 {
63                         throw new NotImplementedException ();
64                 }
65
66                 Type _MethodInfo.GetType ()
67                 {
68                         // Required or object::GetType becomes virtual final
69                         return base.GetType ();
70                 }
71
72                 void _MethodInfo.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
73                 {
74                         throw new NotImplementedException ();
75                 }
76
77                 void _MethodInfo.GetTypeInfoCount (out uint pcTInfo)
78                 {
79                         throw new NotImplementedException ();
80                 }
81
82                 void _MethodInfo.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
83                 {
84                         throw new NotImplementedException ();
85                 }
86
87                 [ComVisible (true)]
88                 public virtual MethodInfo GetGenericMethodDefinition ()
89                 {
90                         throw new NotSupportedException ();
91                 }
92
93                 public virtual MethodInfo MakeGenericMethod (params Type [] typeArguments)
94                 {
95                         throw new NotSupportedException (this.GetType().ToString ());
96                 }
97
98                 // GetGenericArguments, IsGenericMethod, IsGenericMethodDefinition
99                 // and ContainsGenericParameters are implemented in the derived classes.
100                 [ComVisible (true)]
101                 public override Type [] GetGenericArguments () {
102                         return Type.EmptyTypes;
103                 }
104
105 #if !NET_4_0 && !MOONLIGHT
106                 public override bool IsGenericMethod {
107                         get {
108                                 return false;
109                         }
110                 }
111
112                 public override bool IsGenericMethodDefinition {
113                         get {
114                                 return false;
115                         }
116                 }
117
118                 public override bool ContainsGenericParameters {
119                         get {
120                                 return false;
121                         }
122                 }
123 #endif
124
125                 public virtual ParameterInfo ReturnParameter {
126                         get {
127                                 throw new NotSupportedException ();
128                         }
129                 }
130
131 #if NET_4_0
132                 public override bool Equals (object obj)
133                 {
134                         return obj == (object) this;
135                 }
136
137                 public override int GetHashCode ()
138                 {
139                         return base.GetHashCode ();
140                 }
141
142                 public static bool operator == (MethodInfo left, MethodInfo right)
143                 {
144                         if ((object)left == (object)right)
145                                 return true;
146                         if ((object)left == null ^ (object)right == null)
147                                 return false;
148                         return left.Equals (right);
149                 }
150
151                 public static bool operator != (MethodInfo left, MethodInfo right)
152                 {
153                         if ((object)left == (object)right)
154                                 return false;
155                         if ((object)left == null ^ (object)right == null)
156                                 return true;
157                         return !left.Equals (right);
158                 }
159 #endif
160
161         }
162 }