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

   1 //
   2 // System.Reflection.Emit/MethodBuilder.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Reflection;
  35 using System.Reflection.Emit;
  36 using System.Globalization;
  37 using System.Security;
  38 using System.Security.Permissions;
  39 using System.Runtime.CompilerServices;
  40 using System.Runtime.InteropServices;
  41 using System.Diagnostics.SymbolStore;
  42
  43 namespace System.Reflection.Emit
  44 {
  45 #if NET_2_0
  46         [ComVisible (true)]
  47         [ComDefaultInterface (typeof (_MethodBuilder))]
  48 #endif
  49         [ClassInterface (ClassInterfaceType.None)]
  50         public sealed class MethodBuilder : MethodInfo, _MethodBuilder
  51         {
  52                 private RuntimeMethodHandle mhandle;
  53                 private Type rtype;
  54                 private Type[] parameters;
  55                 private MethodAttributes attrs;
  56                 private MethodImplAttributes iattrs;
  57                 private string name;
  58                 private int table_idx;
  59                 private byte[] code;
  60                 private ILGenerator ilgen;
  61                 private TypeBuilder type;
  62                 private ParameterBuilder[] pinfo;
  63                 private CustomAttributeBuilder[] cattrs;
  64                 private MethodInfo override_method;
  65                 private string pi_dll;
  66                 private string pi_entry;
  67                 private CharSet charset;
  68                 private uint extra_flags; /* this encodes set_last_error etc */
  69                 private CallingConvention native_cc;
  70                 private CallingConventions call_conv;
  71                 private bool init_locals = true;
  72                 private IntPtr generic_container;
  73 #if NET_2_0 || BOOTSTRAP_NET_2_0
  74                 private GenericTypeParameterBuilder[] generic_params;
  75 #else
  76                 private Object generic_params; /* so offsets are the same */
  77 #endif
  78                 private Type[] returnModReq;
  79                 private Type[] returnModOpt;
  80                 private Type[][] paramModReq;
  81                 private Type[][] paramModOpt;
  82                 private RefEmitPermissionSet[] permissions;
  83
  84                 internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt)
  85                 {
  86                         this.name = name;
  87                         this.attrs = attributes;
  88                         this.call_conv = callingConvention;
  89                         this.rtype = returnType;
  90                         this.returnModReq = returnModReq;
  91                         this.returnModOpt = returnModOpt;
  92                         this.paramModReq = paramModReq;
  93                         this.paramModOpt = paramModOpt;
  94                         // The MSDN docs does not specify this, but the MS MethodBuilder
  95                         // appends a HasThis flag if the method is not static
  96                         if ((attributes & MethodAttributes.Static) == 0)
  97                                 this.call_conv |= CallingConventions.HasThis;
  98                         if (parameterTypes != null) {
  99                                 for (int i = 0; i < parameterTypes.Length; ++i)
 100                                         if (parameterTypes [i] == null)
 101                                                 throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
 102
 103                                 this.parameters = new Type [parameterTypes.Length];
 104                                 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
 105                         }
 106                         type = tb;
 107                         table_idx = get_next_table_index (this, 0x06, true);
 108                 }
 109
 110                 internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes,
 111                                                                 CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt,
 112                         String dllName, String entryName, CallingConvention nativeCConv, CharSet nativeCharset)
 113                         : this (tb, name, attributes, callingConvention, returnType, returnModReq, returnModOpt, parameterTypes, paramModReq, paramModOpt)
 114                 {
 115                         pi_dll = dllName;
 116                         pi_entry = entryName;
 117                         native_cc = nativeCConv;
 118                         charset = nativeCharset;
 119                 }
 120
 121                 public bool InitLocals {
 122                         get {return init_locals;}
 123                         set {init_locals = value;}
 124                 }
 125
 126                 internal TypeBuilder TypeBuilder {
 127                         get {return type;}
 128                 }
 129
 130                 public override RuntimeMethodHandle MethodHandle {
 131                         get {
 132                                 throw NotSupported ();
 133                         }
 134                 }
 135
 136                 public override Type ReturnType {
 137                         get { return rtype; }
 138                 }
 139
 140                 public override Type ReflectedType {
 141                         get { return type; }
 142                 }
 143
 144                 public override Type DeclaringType {
 145                         get { return type; }
 146                 }
 147
 148                 public override string Name {
 149                         get { return name; }
 150                 }
 151
 152                 public override MethodAttributes Attributes {
 153                         get { return attrs; }
 154                 }
 155
 156                 public override ICustomAttributeProvider ReturnTypeCustomAttributes {
 157                         get { return null; }
 158                 }
 159
 160                 public override CallingConventions CallingConvention {
 161                         get { return call_conv; }
 162                 }
 163
 164                 [MonoTODO("Not implemented")]
 165                 public string Signature {
 166                         get {
 167                                 throw new NotImplementedException ();
 168                         }
 169                 }
 170
 171                 /* Used by mcs */
 172                 internal bool BestFitMapping {
 173                         set {
 174                                 extra_flags = (uint) ((extra_flags & ~0x30) | (uint)(value ? 0x10 : 0x20));
 175                         }
 176                 }
 177
 178                 /* Used by mcs */
 179                 internal bool ThrowOnUnmappableChar {
 180                         set {
 181                                 extra_flags = (uint) ((extra_flags & ~0x3000) | (uint)(value ? 0x1000 : 0x2000));
 182                         }
 183                 }
 184
 185                 /* Used by mcs */
 186                 internal bool ExactSpelling {
 187                         set {
 188                                 extra_flags = (uint) ((extra_flags & ~0x01) | (uint)(value ? 0x01 : 0x00));
 189                         }
 190                 }
 191
 192                 /* Used by mcs */
 193                 internal bool SetLastError {
 194                         set {
 195                                 extra_flags = (uint) ((extra_flags & ~0x40) | (uint)(value ? 0x40 : 0x00));
 196                         }
 197                 }
 198
 199                 public MethodToken GetToken()
 200                 {
 201                         return new MethodToken(0x06000000 | table_idx);
 202                 }
 203
 204                 public override MethodInfo GetBaseDefinition()
 205                 {
 206                         return this;
 207                 }
 208
 209                 public override MethodImplAttributes GetMethodImplementationFlags()
 210                 {
 211                         return iattrs;
 212                 }
 213
 214                 public override ParameterInfo[] GetParameters()
 215                 {
 216                         if (!type.is_created)
 217                                 throw NotSupported ();
 218                         if (parameters == null)
 219                                 return null;
 220
 221                         ParameterInfo[] retval = new ParameterInfo [parameters.Length];
 222                         for (int i = 0; i < parameters.Length; i++) {
 223                                 retval [i] = new ParameterInfo (pinfo == null ? null : pinfo [i + 1], parameters [i], this, i + 1);
 224                         }
 225                         return retval;
 226                 }
 227
 228                 internal override int GetParameterCount ()
 229                 {
 230                         if (parameters == null)
 231                                 return 0;
 232
 233                         return parameters.Length;
 234                 }
 235
 236                 public Module GetModule ()
 237                 {
 238                         return type.Module;
 239                 }
 240
 241                 public void CreateMethodBody (byte[] il, int count)
 242                 {
 243                         if ((il != null) && ((count < 0) || (count > il.Length)))
 244                                 throw new ArgumentOutOfRangeException ("Index was out of range.  Must be non-negative and less than the size of the collection.");
 245
 246                         if ((code != null) || type.is_created)
 247                                 throw new InvalidOperationException ("Type definition of the method is complete.");
 248
 249                         if (il == null)
 250                                 code = null;
 251                         else {
 252                                 code = new byte [count];
 253                                 System.Array.Copy(il, code, count);
 254                         }
 255                 }
 256
 257                 public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
 258                 {
 259                         throw NotSupported ();
 260                 }
 261
 262                 public override bool IsDefined (Type attribute_type, bool inherit)
 263                 {
 264                         throw NotSupported ();
 265                 }
 266
 267                 public override object[] GetCustomAttributes (bool inherit)
 268                 {
 269                         /*
 270                          * On MS.NET, this always returns not_supported, but we can't do this
 271                          * since there would be no way to obtain custom attributes of
 272                          * dynamically created ctors.
 273                          */
 274                         if (type.is_created)
 275                                 return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 276                         else
 277                                 throw NotSupported ();
 278                 }
 279
 280                 public override object[] GetCustomAttributes (Type attributeType, bool inherit)
 281                 {
 282                         if (type.is_created)
 283                                 return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 284                         else
 285                                 throw NotSupported ();
 286                 }
 287
 288                 public ILGenerator GetILGenerator ()
 289                 {
 290                         return GetILGenerator (64);
 291                 }
 292
 293                 public ILGenerator GetILGenerator (int size)
 294                 {
 295                         if (((iattrs & MethodImplAttributes.CodeTypeMask) !=
 296                                  MethodImplAttributes.IL) ||
 297                                 ((iattrs & MethodImplAttributes.ManagedMask) !=
 298                                  MethodImplAttributes.Managed))
 299                                 throw new InvalidOperationException ("Method body should not exist.");
 300                         if (ilgen != null)
 301                                 return ilgen;
 302                         ilgen = new ILGenerator (type.Module, ((ModuleBuilder)type.Module).GetTokenGenerator (), size);
 303                         return ilgen;
 304                 }
 305
 306                 public ParameterBuilder DefineParameter (int position, ParameterAttributes attributes, string strParamName)
 307                 {
 308                         RejectIfCreated ();
 309
 310                         //
 311                         // Extension: Mono allows position == 0 for the return attribute
 312                         //
 313                         if ((position < 0) || (position > parameters.Length))
 314                                 throw new ArgumentOutOfRangeException ("position");
 315
 316                         ParameterBuilder pb = new ParameterBuilder (this, position, attributes, strParamName);
 317                         if (pinfo == null)
 318                                 pinfo = new ParameterBuilder [parameters.Length + 1];
 319                         pinfo [position] = pb;
 320                         return pb;
 321                 }
 322
 323                 internal void fixup ()
 324                 {
 325                         if (((attrs & (MethodAttributes.Abstract | MethodAttributes.PinvokeImpl)) == 0) && ((iattrs & (MethodImplAttributes.Runtime | MethodImplAttributes.InternalCall)) == 0)) {
 326 #if NET_2_0
 327                                 // do not allow zero length method body on MS.NET 2.0 (and higher)
 328                                 if (((ilgen == null) || (ILGenerator.Mono_GetCurrentOffset (ilgen) == 0)) && (code == null || code.Length == 0))
 329 #else
 330                                 if (((ilgen == null) || (ILGenerator.Mono_GetCurrentOffset (ilgen) == 0)) && (code == null))
 331 #endif
 332                                         throw new InvalidOperationException (
 333                                                                              String.Format ("Method '{0}.{1}' does not have a method body.",
 334                                                                                             DeclaringType.Name, Name));
 335                         }
 336                         if (ilgen != null)
 337                                 ilgen.label_fixup ();
 338                 }
 339
 340                 internal void GenerateDebugInfo (ISymbolWriter symbolWriter)
 341                 {
 342                         if (ilgen != null && ilgen.HasDebugInfo) {
 343                                 SymbolToken token = new SymbolToken (GetToken().Token);
 344                                 symbolWriter.OpenMethod (token);
 345                                 symbolWriter.SetSymAttribute (token, "__name", System.Text.Encoding.UTF8.GetBytes (Name));
 346                                 ilgen.GenerateDebugInfo (symbolWriter);
 347                                 symbolWriter.CloseMethod ();
 348                         }
 349                 }
 350
 351                 public void SetCustomAttribute (CustomAttributeBuilder customBuilder)
 352                 {
 353                         if (customBuilder == null)
 354                                 throw new ArgumentNullException ("customBuilder");
 355
 356                         switch (customBuilder.Ctor.ReflectedType.FullName) {
 357                                 case "System.Runtime.CompilerServices.MethodImplAttribute":
 358                                         byte[] data = customBuilder.Data;
 359                                         int impla; // the (stupid) ctor takes a short or an int ...
 360                                         impla = (int)data [2];
 361                                         impla |= ((int)data [3]) << 8;
 362                                         iattrs |= (MethodImplAttributes)impla;
 363                                         return;
 364
 365                                 case "System.Runtime.InteropServices.DllImportAttribute":
 366                                         CustomAttributeBuilder.CustomAttributeInfo attr = CustomAttributeBuilder.decode_cattr (customBuilder);
 367                                         bool preserveSig = true;
 368
 369                                         /*
 370                                          * It would be easier to construct a DllImportAttribute from
 371                                          * the custom attribute builder, but the DllImportAttribute
 372                                          * does not contain all the information required here, ie.
 373                                          * - some parameters, like BestFitMapping has three values
 374                                          *   ("on", "off", "missing"), but DllImportAttribute only
 375                                          *   contains two (on/off).
 376                                          * - PreserveSig is true by default, while it is false by
 377                                          *   default in DllImportAttribute.
 378                                          */
 379
 380                                         pi_dll = (string)attr.ctorArgs[0];
 381                                         if (pi_dll == null || pi_dll.Length == 0)
 382                                                 throw new ArgumentException ("DllName cannot be empty");
 383
 384                                         native_cc = System.Runtime.InteropServices.CallingConvention.Winapi;
 385
 386                                         for (int i = 0; i < attr.namedParamNames.Length; ++i) {
 387                                                 string name = attr.namedParamNames [i];
 388                                                 object value = attr.namedParamValues [i];
 389
 390                                                 if (name == "CallingConvention")
 391                                                         native_cc = (CallingConvention)value;
 392                                                 else if (name == "CharSet")
 393                                                         charset = (CharSet)value;
 394                                                 else if (name == "EntryPoint")
 395                                                         pi_entry = (string)value;
 396                                                 else if (name == "ExactSpelling")
 397                                                         ExactSpelling = (bool)value;
 398                                                 else if (name == "SetLastError")
 399                                                         SetLastError = (bool)value;
 400                                                 else if (name == "PreserveSig")
 401                                                         preserveSig = (bool)value;
 402 #if NET_1_1
 403                                         else if (name == "BestFitMapping")
 404                                                 BestFitMapping = (bool)value;
 405                                         else if (name == "ThrowOnUnmappableChar")
 406                                                 ThrowOnUnmappableChar = (bool)value;
 407 #endif
 408                                         }
 409
 410                                         attrs |= MethodAttributes.PinvokeImpl;
 411                                         if (preserveSig)
 412                                                 iattrs |= MethodImplAttributes.PreserveSig;
 413                                         return;
 414
 415                                 case "System.Runtime.InteropServices.PreserveSigAttribute":
 416                                         iattrs |= MethodImplAttributes.PreserveSig;
 417                                         return;
 418 #if NET_2_0
 419                                 case "System.Runtime.CompilerServices.SpecialNameAttribute":
 420                                         attrs |= MethodAttributes.SpecialName;
 421                                         return;
 422 #endif
 423                                 case "System.Security.SuppressUnmanagedCodeSecurityAttribute":
 424                                         attrs |= MethodAttributes.HasSecurity;
 425                                         break;
 426                         }
 427
 428                         if (cattrs != null) {
 429                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 430                                 cattrs.CopyTo (new_array, 0);
 431                                 new_array [cattrs.Length] = customBuilder;
 432                                 cattrs = new_array;
 433                         } else {
 434                                 cattrs = new CustomAttributeBuilder [1];
 435                                 cattrs [0] = customBuilder;
 436                         }
 437                 }
 438
 439 #if NET_2_0
 440                 [ComVisible (true)]
 441 #endif
 442                 public void SetCustomAttribute (ConstructorInfo con, byte[] binaryAttribute)
 443                 {
 444                         if (con == null)
 445                                 throw new ArgumentNullException ("con");
 446                         if (binaryAttribute == null)
 447                                 throw new ArgumentNullException ("binaryAttribute");
 448                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 449                 }
 450
 451                 public void SetImplementationFlags (MethodImplAttributes attributes)
 452                 {
 453                         RejectIfCreated ();
 454                         iattrs = attributes;
 455                 }
 456
 457                 public void AddDeclarativeSecurity (SecurityAction action, PermissionSet pset)
 458                 {
 459                         if (pset == null)
 460                                 throw new ArgumentNullException ("pset");
 461                         if ((action == SecurityAction.RequestMinimum) ||
 462                                 (action == SecurityAction.RequestOptional) ||
 463                                 (action == SecurityAction.RequestRefuse))
 464                                 throw new ArgumentOutOfRangeException ("Request* values are not permitted", "action");
 465
 466                         RejectIfCreated ();
 467
 468                         if (permissions != null) {
 469                                 /* Check duplicate actions */
 470                                 foreach (RefEmitPermissionSet set in permissions)
 471                                         if (set.action == action)
 472                                                 throw new InvalidOperationException ("Multiple permission sets specified with the same SecurityAction.");
 473
 474                                 RefEmitPermissionSet[] new_array = new RefEmitPermissionSet [permissions.Length + 1];
 475                                 permissions.CopyTo (new_array, 0);
 476                                 permissions = new_array;
 477                         }
 478                         else
 479                                 permissions = new RefEmitPermissionSet [1];
 480
 481                         permissions [permissions.Length - 1] = new RefEmitPermissionSet (action, pset.ToXml ().ToString ());
 482                         attrs |= MethodAttributes.HasSecurity;
 483                 }
 484
 485 #if NET_2_0
 486                 [Obsolete ("An alternate API is available: Emit the MarshalAs custom attribute instead.")]
 487 #endif
 488                 public void SetMarshal (UnmanagedMarshal unmanagedMarshal)
 489                 {
 490                         RejectIfCreated ();
 491                         throw new NotImplementedException ();
 492                 }
 493
 494                 [MonoTODO]
 495                 public void SetSymCustomAttribute (string name, byte[] data)
 496                 {
 497                         RejectIfCreated ();
 498                         throw new NotImplementedException ();
 499                 }
 500
 501                 public override string ToString()
 502                 {
 503                         return "MethodBuilder [" + type.Name + "::" + name + "]";
 504                 }
 505
 506                 [MonoTODO]
 507                 public override bool Equals (object obj)
 508                 {
 509                         return base.Equals (obj);
 510                 }
 511
 512                 public override int GetHashCode ()
 513                 {
 514                         return name.GetHashCode ();
 515                 }
 516
 517                 internal override int get_next_table_index (object obj, int table, bool inc)
 518                 {
 519                         return type.get_next_table_index (obj, table, inc);
 520                 }
 521
 522                 internal void set_override (MethodInfo mdecl)
 523                 {
 524                         override_method = mdecl;
 525                 }
 526
 527                 private void RejectIfCreated ()
 528                 {
 529                         if (type.is_created)
 530                                 throw new InvalidOperationException ("Type definition of the method is complete.");
 531                 }
 532
 533                 private Exception NotSupported ()
 534                 {
 535                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 536                 }
 537
 538 #if NET_2_0 || BOOTSTRAP_NET_2_0
 539                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 540                 public override extern MethodInfo MakeGenericMethod (params Type [] types);
 541
 542                 public override bool IsGenericMethodDefinition {
 543                         get {
 544                                 return generic_params != null;
 545                         }
 546                 }
 547
 548                 public override bool IsGenericMethod {
 549                         get {
 550                                 return generic_params != null;
 551                         }
 552                 }
 553
 554                 public override MethodInfo GetGenericMethodDefinition ()
 555                 {
 556                         if (!IsGenericMethodDefinition)
 557                                 throw new InvalidOperationException ();
 558
 559                         return this;
 560                 }
 561
 562                 public override Type[] GetGenericArguments ()
 563                 {
 564                         if (generic_params == null)
 565                                 return new Type [0];
 566
 567                         Type[] result = new Type [generic_params.Length];
 568                         for (int i = 0; i < generic_params.Length; i++)
 569                                 result [i] = generic_params [i];
 570
 571                         return result;
 572                 }
 573
 574                 public GenericTypeParameterBuilder[] DefineGenericParameters (params string[] names)
 575                 {
 576                         if (names == null)
 577                                 throw new ArgumentNullException ("names");
 578
 579                         generic_params = new GenericTypeParameterBuilder [names.Length];
 580                         for (int i = 0; i < names.Length; i++)
 581                                 generic_params [i] = new GenericTypeParameterBuilder (
 582                                         type, this, names [i], i);
 583
 584                         return generic_params;
 585                 }
 586
 587                 public void SetGenericMethodSignature (MethodAttributes attributes, CallingConventions callingConvention, Type return_type, Type[] parameter_types)
 588                 {
 589                         RejectIfCreated ();
 590
 591                         this.attrs = attributes;
 592                         this.call_conv = callingConvention;
 593                         if ((attributes & MethodAttributes.Static) == 0)
 594                                 this.call_conv |= CallingConventions.HasThis;
 595
 596                         this.rtype = return_type;
 597                         this.parameters = new Type [parameter_types.Length];
 598                         System.Array.Copy (parameter_types, this.parameters, parameter_types.Length);
 599                 }
 600
 601                 public void SetReturnType (Type returnType)
 602                 {
 603                         rtype = returnType;
 604                 }
 605
 606                 public void SetParameters (params Type[] parameterTypes)
 607                 {
 608                         if (parameterTypes != null) {
 609                                 for (int i = 0; i < parameterTypes.Length; ++i)
 610                                         if (parameterTypes [i] == null)
 611                                                 throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
 612
 613                                 this.parameters = new Type [parameterTypes.Length];
 614                                 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
 615                         }
 616                 }
 617
 618                 public void SetSignature (Type returnType, Type[] returnTypeRequiredCustomModifiers, Type[] returnTypeOptionalCustomModifiers, Type[] parameterTypes, Type[][] parameterTypeRequiredCustomModifiers, Type[][] parameterTypeOptionalCustomModifiers)
 619                 {
 620                         SetReturnType (returnType);
 621                         SetParameters (parameterTypes);
 622                         this.returnModReq = returnTypeRequiredCustomModifiers;
 623                         this.returnModOpt = returnTypeOptionalCustomModifiers;
 624                         this.paramModReq = parameterTypeRequiredCustomModifiers;
 625                         this.paramModOpt = parameterTypeOptionalCustomModifiers;
 626                 }
 627
 628                 public override Module Module {
 629                         get {
 630                                 return base.Module;
 631                         }
 632                 }
 633 #endif
 634
 635                 void _MethodBuilder.GetIDsOfNames([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 636                 {
 637                         throw new NotImplementedException ();
 638                 }
 639
 640                 void _MethodBuilder.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 641                 {
 642                         throw new NotImplementedException ();
 643                 }
 644
 645                 void _MethodBuilder.GetTypeInfoCount (out uint pcTInfo)
 646                 {
 647                         throw new NotImplementedException ();
 648                 }
 649
 650                 void _MethodBuilder.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 651                 {
 652                         throw new NotImplementedException ();
 653                 }
 654         }
 655 }