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                 // FIXME: when this method is uncommented, corlib fails
  62                 // to build
  63 /*
  64                 [DebuggerStepThrough]
  65                 [DebuggerHidden]
  66                 public new object Invoke (object obj, object[] parameters)
  67                 {
  68                         return base.Invoke (obj, parameters);
  69                 }
  70 */
  71
  72                 void _MethodInfo.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
  73                 {
  74                         throw new NotImplementedException ();
  75                 }
  76
  77                 void _MethodInfo.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
  78                 {
  79                         throw new NotImplementedException ();
  80                 }
  81
  82                 void _MethodInfo.GetTypeInfoCount (out uint pcTInfo)
  83                 {
  84                         throw new NotImplementedException ();
  85                 }
  86
  87                 void _MethodInfo.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
  88                 {
  89                         throw new NotImplementedException ();
  90                 }
  91
  92                 [ComVisible (true)]
  93                 public virtual MethodInfo GetGenericMethodDefinition ()
  94                 {
  95                         throw new NotSupportedException ();
  96                 }
  97
  98                 public virtual MethodInfo MakeGenericMethod (params Type [] typeArguments)
  99                 {
 100                         throw new NotSupportedException (this.GetType().ToString ());
 101                 }
 102
 103                 // GetGenericArguments, IsGenericMethod, IsGenericMethodDefinition
 104                 // and ContainsGenericParameters are implemented in the derived classes.
 105                 [ComVisible (true)]
 106                 public override Type [] GetGenericArguments () {
 107                         return Type.EmptyTypes;
 108                 }
 109
 110 #if !NET_4_0 && !MOONLIGHT
 111                 public override bool IsGenericMethod {
 112                         get {
 113                                 return false;
 114                         }
 115                 }
 116
 117                 public override bool IsGenericMethodDefinition {
 118                         get {
 119                                 return false;
 120                         }
 121                 }
 122
 123                 public override bool ContainsGenericParameters {
 124                         get {
 125                                 return false;
 126                         }
 127                 }
 128 #endif
 129
 130                 public virtual ParameterInfo ReturnParameter {
 131                         get {
 132                                 throw new NotSupportedException ();
 133                         }
 134                 }
 135
 136 #if NET_4_0
 137                 public override bool Equals (object obj)
 138                 {
 139                         return obj == this;
 140                 }
 141
 142                 public override int GetHashCode ()
 143                 {
 144                         return base.GetHashCode ();
 145                 }
 146
 147                 public static bool operator == (MethodInfo left, MethodInfo right)
 148                 {
 149                         if ((object)left == (object)right)
 150                                 return true;
 151                         if ((object)left == null ^ (object)right == null)
 152                                 return false;
 153                         return left.Equals (right);
 154                 }
 155
 156                 public static bool operator != (MethodInfo left, MethodInfo right)
 157                 {
 158                         if ((object)left == (object)right)
 159                                 return false;
 160                         if ((object)left == null ^ (object)right == null)
 161                                 return true;
 162                         return !left.Equals (right);
 163                 }
 164 #endif
 165
 166         }
 167 }