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