mcs/class/corlib/System.Reflection.Emit/MethodOnTypeBuilderInst.cs

   1 //
   2 // System.Reflection.Emit/MethodOnTypeBuilderInst.cs
   3 //
   4 // Author:
   5 //   Zoltan Varga (vargaz@gmail.com)
   6 //
   7 //
   8 // Copyright (C) 2008 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;
  31 using System.Globalization;
  32 using System.Reflection;
  33 using System.Text;
  34
  35 namespace System.Reflection.Emit
  36 {
  37         /*
  38          * This class represents a method of an instantiation of a generic type builder.
  39          */
  40         internal class MethodOnTypeBuilderInst : MethodInfo
  41         {
  42                 #region Keep in sync with object-internals.h
  43                 MonoGenericClass instantiation;
  44                 internal MethodBuilder base_method; /*This is the base method definition, it must be non-inflated and belong to a non-inflated type.*/
  45                 Type[] method_arguments;
  46                 MethodOnTypeBuilderInst generic_method_definition;
  47                 #endregion
  48
  49                 public MethodOnTypeBuilderInst (MonoGenericClass instantiation, MethodBuilder base_method)
  50                 {
  51                         this.instantiation = instantiation;
  52                         this.base_method = base_method;
  53                 }
  54
  55                 internal MethodOnTypeBuilderInst (MethodOnTypeBuilderInst gmd, Type[] typeArguments)
  56                 {
  57                         this.instantiation = gmd.instantiation;
  58                         this.base_method = gmd.base_method;
  59                         this.method_arguments = new Type [typeArguments.Length];
  60                         typeArguments.CopyTo (this.method_arguments, 0);
  61                         this.generic_method_definition = gmd;
  62                 }
  63
  64                 internal bool IsCompilerContext {
  65                         get { return ((ModuleBuilder)base_method.Module).assemblyb.IsCompilerContext; }
  66                 }
  67
  68                 //
  69                 // MemberInfo members
  70                 //
  71
  72                 public override Type DeclaringType {
  73                         get {
  74                                 return instantiation;
  75                         }
  76                 }
  77
  78                 public override string Name {
  79                         get {
  80                                 return base_method.Name;
  81                         }
  82                 }
  83
  84                 public override Type ReflectedType {
  85                         get {
  86                                 return instantiation;
  87                         }
  88                 }
  89
  90                 public override Type ReturnType {
  91                         get {
  92                                 if (!IsCompilerContext)
  93                                         return base_method.ReturnType;
  94                                 return instantiation.InflateType (base_method.ReturnType, method_arguments);
  95                         }
  96                 }
  97
  98                 public override bool IsDefined (Type attributeType, bool inherit)
  99                 {
 100                         throw new NotSupportedException ();
 101                 }
 102
 103                 public override object [] GetCustomAttributes (bool inherit)
 104                 {
 105                         throw new NotSupportedException ();
 106                 }
 107
 108                 public override object [] GetCustomAttributes (Type attributeType, bool inherit)
 109                 {
 110                         throw new NotSupportedException ();
 111                 }
 112
 113                 public override string ToString ()
 114                 {
 115                          //IEnumerable`1 get_Item(TKey)
 116                          StringBuilder sb = new StringBuilder (ReturnType.ToString ());
 117                          sb.Append (" ");
 118                          sb.Append (base_method.Name);
 119                          sb.Append ("(");
 120                          if (IsCompilerContext) {
 121                                  ParameterInfo [] par = GetParameters ();
 122                                  for (int i = 0; i < par.Length; ++i) {
 123                                         if (i > 0)
 124                                                 sb.Append (", ");
 125                                         sb.Append (par [i].ParameterType);
 126                                  }
 127                         }
 128                          sb.Append (")");
 129                          return sb.ToString ();
 130                 }
 131                 //
 132                 // MethodBase members
 133                 //
 134
 135                 public override MethodImplAttributes GetMethodImplementationFlags ()
 136                 {
 137                         return base_method.GetMethodImplementationFlags ();
 138                 }
 139
 140                 public override ParameterInfo [] GetParameters ()
 141                 {
 142                         if (!IsCompilerContext)
 143                                 throw new NotSupportedException ();
 144
 145                         ParameterInfo [] res = new ParameterInfo [base_method.parameters.Length];
 146                         for (int i = 0; i < base_method.parameters.Length; i++) {
 147                                 Type type = instantiation.InflateType (base_method.parameters [i], method_arguments);
 148                                 res [i] = new ParameterInfo (base_method.pinfo == null ? null : base_method.pinfo [i + 1], type, this, i + 1);
 149                         }
 150                         return res;
 151                 }
 152
 153                 public override int MetadataToken {
 154                         get {
 155                                 if (!IsCompilerContext)
 156                                         return base.MetadataToken;
 157                                 return base_method.MetadataToken;
 158                         }
 159                 }
 160
 161                 internal override int GetParameterCount ()
 162                 {
 163                         return base_method.GetParameterCount ();
 164                 }
 165
 166                 public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
 167                 {
 168                         throw new NotSupportedException ();
 169                 }
 170
 171                 public override RuntimeMethodHandle MethodHandle {
 172                         get {
 173                                 throw new NotSupportedException ();
 174                         }
 175                 }
 176
 177                 public override MethodAttributes Attributes {
 178                         get {
 179                                 return base_method.Attributes;
 180                         }
 181                 }
 182
 183                 public override CallingConventions CallingConvention {
 184                         get {
 185                                 return base_method.CallingConvention;
 186                         }
 187                 }
 188
 189                 public override MethodInfo MakeGenericMethod (params Type [] typeArguments)
 190                 {
 191                         if (base_method.generic_params == null || method_arguments != null)
 192                                 throw new NotSupportedException (); //FIXME is this the right exception?
 193
 194                         if (typeArguments == null)
 195                                 throw new ArgumentNullException ("typeArguments");
 196
 197                         foreach (Type t in typeArguments) {
 198                                 if (t == null)
 199                                         throw new ArgumentNullException ("typeArguments");
 200                         }
 201
 202                         if (base_method.generic_params.Length != typeArguments.Length)
 203                                 throw new ArgumentException ("Invalid argument array length");
 204
 205                         return new MethodOnTypeBuilderInst (this, typeArguments);
 206                 }
 207
 208                 public override Type [] GetGenericArguments ()
 209                 {
 210                         if (base_method.generic_params == null)
 211                                 return null;
 212                         Type[] source = method_arguments ?? base_method.generic_params;
 213                         Type[] result = new Type [source.Length];
 214                         source.CopyTo (result, 0);
 215                         return result;
 216                 }
 217
 218                 public override MethodInfo GetGenericMethodDefinition ()
 219                 {
 220                         return (MethodInfo)generic_method_definition ?? base_method;
 221                 }
 222
 223                 public override bool ContainsGenericParameters {
 224                         get {
 225                                 if (base_method.generic_params == null)
 226                                         throw new NotSupportedException ();
 227                                 if (method_arguments == null)
 228                                         return true;
 229                                 foreach (Type t in method_arguments) {
 230                                         if (t.ContainsGenericParameters)
 231                                                 return true;
 232                                 }
 233                                 return false;
 234                         }
 235                 }
 236
 237                 public override bool IsGenericMethodDefinition {
 238                         get {
 239                                 return base_method.generic_params != null && method_arguments == null;
 240                         }
 241                 }
 242
 243                 public override bool IsGenericMethod {
 244                         get {
 245                                 return base_method.generic_params != null;
 246                         }
 247                 }
 248
 249                 //
 250                 // MethodInfo members
 251                 //
 252
 253                 public override MethodInfo GetBaseDefinition ()
 254                 {
 255                         throw new NotSupportedException ();
 256                 }
 257
 258                 public override ICustomAttributeProvider ReturnTypeCustomAttributes {
 259                         get {
 260                                 throw new NotSupportedException ();
 261                         }
 262                 }
 263         }
 264 }
 265