mcs/class/corlib/System.Reflection/MethodBase.cs

   1 //
   2 // System.Reflection/MethodBase.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.Globalization;
  32 using System.Reflection.Emit;
  33 using System.Runtime.CompilerServices;
  34 using System.Runtime.InteropServices;
  35
  36 namespace System.Reflection {
  37
  38 #if NET_2_0
  39         [ComVisible (true)]
  40         [ComDefaultInterfaceAttribute (typeof (_MethodBase))]
  41 #endif
  42         [Serializable]
  43         [ClassInterface(ClassInterfaceType.None)]
  44         public abstract class MethodBase: MemberInfo, _MethodBase {
  45
  46                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  47                 public extern static MethodBase GetCurrentMethod ();
  48
  49                 public static MethodBase GetMethodFromHandle(RuntimeMethodHandle handle) {
  50                         return GetMethodFromHandleInternalType (handle.Value, IntPtr.Zero);
  51                 }
  52
  53                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  54                 private extern static MethodBase GetMethodFromHandleInternalType (IntPtr method_handle, IntPtr type_handle);
  55
  56 #if NET_2_0
  57                 [ComVisible (false)]
  58                 public static MethodBase GetMethodFromHandle(RuntimeMethodHandle handle, RuntimeTypeHandle declaringType) {
  59                         return GetMethodFromHandleInternalType (handle.Value, declaringType.Value);
  60                 }
  61 #endif
  62
  63                 public abstract MethodImplAttributes GetMethodImplementationFlags();
  64
  65                 public abstract ParameterInfo[] GetParameters();
  66
  67                 //
  68                 // This is a quick version for our own use. We should override
  69                 // it where possible so that it does not allocate an array.
  70                 //
  71                 internal virtual int GetParameterCount ()
  72                 {
  73                         ParameterInfo [] pi = GetParameters ();
  74                         if (pi == null)
  75                                 return 0;
  76
  77                         return pi.Length;
  78                 }
  79
  80 #if ONLY_1_1
  81                 public new Type GetType ()
  82                 {
  83                         return base.GetType ();
  84                 }
  85 #endif
  86
  87                 [DebuggerHidden]
  88                 [DebuggerStepThrough]
  89                 public Object Invoke(Object obj, Object[] parameters) {
  90                         return Invoke (obj, 0, null, parameters, null);
  91                 }
  92
  93                 public abstract Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture);
  94
  95                 protected MethodBase()
  96                 {
  97                 }
  98
  99                 public abstract RuntimeMethodHandle MethodHandle { get; }
 100                 public abstract MethodAttributes Attributes { get; }
 101                 public virtual CallingConventions CallingConvention { get {return CallingConventions.Standard;} }
 102                 public Boolean IsPublic {
 103                         get {
 104                                 return (Attributes & MethodAttributes.MemberAccessMask) == MethodAttributes.Public;
 105                         }
 106                 }
 107                 public Boolean IsPrivate {
 108                         get {
 109                                 return (Attributes & MethodAttributes.MemberAccessMask) == MethodAttributes.Private;
 110                         }
 111                 }
 112                 public Boolean IsFamily {
 113                         get {
 114                                 return (Attributes & MethodAttributes.MemberAccessMask) == MethodAttributes.Family;
 115                         }
 116                 }
 117                 public Boolean IsAssembly {
 118                         get {
 119                                 return (Attributes & MethodAttributes.MemberAccessMask) == MethodAttributes.Assembly;
 120                         }
 121                 }
 122                 public Boolean IsFamilyAndAssembly {
 123                         get {
 124                                 return (Attributes & MethodAttributes.MemberAccessMask) == MethodAttributes.FamANDAssem;
 125                         }
 126                 }
 127                 public Boolean IsFamilyOrAssembly {
 128                         get {
 129                                 return (Attributes & MethodAttributes.MemberAccessMask) == MethodAttributes.FamORAssem;
 130                         }
 131                 }
 132                 public Boolean IsStatic {
 133                         get {
 134                                 return (Attributes & MethodAttributes.Static) != 0;
 135                         }
 136                 }
 137                 public Boolean IsFinal {
 138                         get {
 139                                 return (Attributes & MethodAttributes.Final) != 0;
 140                         }
 141                 }
 142                 public Boolean IsVirtual {
 143                         get {
 144                                 return (Attributes & MethodAttributes.Virtual) != 0;
 145                         }
 146                 }
 147                 public Boolean IsHideBySig {
 148                         get {
 149                                 return (Attributes & MethodAttributes.HideBySig) != 0;
 150                         }
 151                 }
 152                 public Boolean IsAbstract {
 153                         get {
 154                                 return (Attributes & MethodAttributes.Abstract) != 0;
 155                         }
 156                 }
 157                 public Boolean IsSpecialName {
 158                         get {
 159                                 int attr = (int)Attributes;
 160                                 return (attr & (int)MethodAttributes.SpecialName) != 0;
 161                         }
 162                 }
 163                 [ComVisibleAttribute (true)]
 164                 public Boolean IsConstructor {
 165                         get {
 166                                 int attr = (int)Attributes;
 167                                 return ((attr & (int)MethodAttributes.RTSpecialName) != 0
 168                                         && (Name == ".ctor"));
 169                         }
 170                 }
 171
 172                 internal virtual int get_next_table_index (object obj, int table, bool inc) {
 173                         if (this is MethodBuilder) {
 174                                 MethodBuilder mb = (MethodBuilder)this;
 175                                 return mb.get_next_table_index (obj, table, inc);
 176                         }
 177                         if (this is ConstructorBuilder) {
 178                                 ConstructorBuilder mb = (ConstructorBuilder)this;
 179                                 return mb.get_next_table_index (obj, table, inc);
 180                         }
 181                         throw new Exception ("Method is not a builder method");
 182                 }
 183
 184 #if NET_2_0 || BOOTSTRAP_NET_2_0
 185                 [ComVisible (true)]
 186                 public virtual Type [] GetGenericArguments ()
 187                 {
 188                         throw new NotSupportedException ();
 189                 }
 190
 191                 public virtual bool ContainsGenericParameters {
 192                         get {
 193                                 return false;
 194                         }
 195                 }
 196
 197                 public virtual bool IsGenericMethodDefinition {
 198                         get {
 199                                 return false;
 200                         }
 201                 }
 202
 203                 public virtual bool IsGenericMethod {
 204                         get {
 205                                 return false;
 206                         }
 207                 }
 208 #endif
 209
 210 #if NET_2_0
 211                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 212                 internal extern static MethodBody GetMethodBodyInternal (IntPtr handle);
 213
 214                 internal static MethodBody GetMethodBody (IntPtr handle) {
 215                         return GetMethodBodyInternal (handle);
 216                 }
 217
 218                 public virtual MethodBody GetMethodBody () {
 219                         throw new NotSupportedException ();
 220                 }
 221 #endif
 222
 223                 void _MethodBase.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 224                 {
 225                         throw new NotImplementedException ();
 226                 }
 227
 228                 void _MethodBase.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 229                 {
 230                         throw new NotImplementedException ();
 231                 }
 232
 233                 void _MethodBase.GetTypeInfoCount (out uint pcTInfo)
 234                 {
 235                         throw new NotImplementedException ();
 236                 }
 237
 238                 void _MethodBase.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 239                 {
 240                         throw new NotImplementedException ();
 241                 }
 242         }
 243 }