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

   1 //
   2 // System.Reflection.Emit.TypeBuilder.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //   Marek Safar (marek.safar@gmail.com)
   7 //
   8 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 #if !FULL_AOT_RUNTIME
  35 using System;
  36 using System.Text;
  37 using System.Reflection;
  38 using System.Reflection.Emit;
  39 using System.Runtime.CompilerServices;
  40 using System.Runtime.InteropServices;
  41 using System.Globalization;
  42 using System.Collections;
  43 using System.Security;
  44 using System.Security.Permissions;
  45 using System.Diagnostics.SymbolStore;
  46
  47
  48 namespace System.Reflection.Emit
  49 {
  50         [ComVisible (true)]
  51         [ComDefaultInterface (typeof (_TypeBuilder))]
  52         [ClassInterface (ClassInterfaceType.None)]
  53         [StructLayout (LayoutKind.Sequential)]
  54         public sealed class TypeBuilder : TypeInfo, _TypeBuilder
  55         {
  56 #pragma warning disable 169
  57                 #region Sync with reflection.h
  58                 private string tname;
  59                 private string nspace;
  60                 private Type parent;
  61                 private Type nesting_type;
  62                 internal Type[] interfaces;
  63                 internal int num_methods;
  64                 internal MethodBuilder[] methods;
  65                 internal ConstructorBuilder[] ctors;
  66                 internal PropertyBuilder[] properties;
  67                 internal int num_fields;
  68                 internal FieldBuilder[] fields;
  69                 internal EventBuilder[] events;
  70                 private CustomAttributeBuilder[] cattrs;
  71                 internal TypeBuilder[] subtypes;
  72                 internal TypeAttributes attrs;
  73                 private int table_idx;
  74                 private ModuleBuilder pmodule;
  75                 private int class_size;
  76                 private PackingSize packing_size;
  77                 private IntPtr generic_container;
  78                 private GenericTypeParameterBuilder[] generic_params;
  79                 private RefEmitPermissionSet[] permissions;
  80                 private TypeInfo created;
  81                 #endregion
  82 #pragma warning restore 169
  83
  84                 string fullname;
  85                 bool createTypeCalled;
  86                 private Type underlying_type;
  87
  88                 public const int UnspecifiedTypeSize = 0;
  89
  90                 protected override TypeAttributes GetAttributeFlagsImpl ()
  91                 {
  92                         return attrs;
  93                 }
  94
  95                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  96                 private extern void setup_internal_class (TypeBuilder tb);
  97
  98                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  99                 private extern void create_internal_class (TypeBuilder tb);
 100
 101                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 102                 private extern void setup_generic_class ();
 103
 104                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 105                 private extern void create_generic_class ();
 106
 107                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 108                 private extern EventInfo get_event_info (EventBuilder eb);
 109
 110                 internal TypeBuilder (ModuleBuilder mb, TypeAttributes attr, int table_idx)
 111                 {
 112                         this.parent = null;
 113                         this.attrs = attr;
 114                         this.class_size = UnspecifiedTypeSize;
 115                         this.table_idx = table_idx;
 116                         fullname = this.tname = table_idx == 1 ? "<Module>" : "type_" + table_idx.ToString ();
 117                         this.nspace = String.Empty;
 118                         pmodule = mb;
 119                         setup_internal_class (this);
 120                 }
 121
 122                 internal TypeBuilder (ModuleBuilder mb, string name, TypeAttributes attr, Type parent, Type[] interfaces, PackingSize packing_size, int type_size, Type nesting_type)
 123                 {
 124                         int sep_index;
 125                         this.parent = parent;
 126                         this.attrs = attr;
 127                         this.class_size = type_size;
 128                         this.packing_size = packing_size;
 129                         this.nesting_type = nesting_type;
 130
 131                         check_name ("fullname", name);
 132
 133                         if (parent == null && (attr & TypeAttributes.Interface) != 0 && (attr & TypeAttributes.Abstract) == 0)
 134                                 throw new InvalidOperationException ("Interface must be declared abstract.");
 135
 136                         sep_index = name.LastIndexOf('.');
 137                         if (sep_index != -1) {
 138                                 this.tname = name.Substring (sep_index + 1);
 139                                 this.nspace = name.Substring (0, sep_index);
 140                         } else {
 141                                 this.tname = name;
 142                                 this.nspace = String.Empty;
 143                         }
 144                         if (interfaces != null) {
 145                                 this.interfaces = new Type[interfaces.Length];
 146                                 System.Array.Copy (interfaces, this.interfaces, interfaces.Length);
 147                         }
 148                         pmodule = mb;
 149
 150                         if (((attr & TypeAttributes.Interface) == 0) && (parent == null))
 151                                 this.parent = typeof (object);
 152
 153                         // skip .<Module> ?
 154                         table_idx = mb.get_next_table_index (this, 0x02, true);
 155                         setup_internal_class (this);
 156                         fullname = GetFullName ();
 157                 }
 158
 159                 public override Assembly Assembly {
 160                         get {return pmodule.Assembly;}
 161                 }
 162
 163                 public override string AssemblyQualifiedName {
 164                         get {
 165                                 return fullname + ", " + Assembly.FullName;
 166                         }
 167                 }
 168
 169                 public override Type BaseType {
 170                         get {
 171                                 return parent;
 172                         }
 173                 }
 174
 175                 public override Type DeclaringType {
 176                         get { return nesting_type; }
 177                 }
 178
 179                 [ComVisible (true)]
 180                 public override bool IsSubclassOf (Type c)
 181                 {
 182                         Type t;
 183                         if (c == null)
 184                                 return false;
 185                         if (c == this)
 186                                 return false;
 187                         t = parent;
 188                         while (t != null) {
 189                                 if (c == t)
 190                                         return true;
 191                                 t = t.BaseType;
 192                         }
 193                         return false;
 194                 }
 195
 196                 public override Type UnderlyingSystemType {
 197                         get {
 198                                 if (is_created)
 199                                         return created.UnderlyingSystemType;
 200
 201                                 if (IsEnum) {
 202                                         if (underlying_type != null)
 203                                                 return underlying_type;
 204                                         throw new InvalidOperationException (
 205                                                 "Enumeration type is not defined.");
 206                                 }
 207
 208                                 return this;
 209                         }
 210                 }
 211
 212                 string GetFullName ()
 213                 {
 214                         if (nesting_type != null)
 215                                 return String.Concat (nesting_type.FullName, "+", tname);
 216                         if ((nspace != null) && (nspace.Length > 0))
 217                                 return String.Concat (nspace, ".", tname);
 218                         return tname;
 219                 }
 220
 221                 public override string FullName {
 222                         get {
 223                                 return fullname;
 224                         }
 225                 }
 226
 227                 public override Guid GUID {
 228                         get {
 229                                 check_created ();
 230                                 return created.GUID;
 231                         }
 232                 }
 233
 234                 public override Module Module {
 235                         get {return pmodule;}
 236                 }
 237
 238                 public override string Name {
 239                         get {return tname;}
 240                 }
 241
 242                 public override string Namespace {
 243                         get {return nspace;}
 244                 }
 245
 246                 public PackingSize PackingSize {
 247                         get {return packing_size;}
 248                 }
 249
 250                 public int Size {
 251                         get { return class_size; }
 252                 }
 253
 254                 public override Type ReflectedType {
 255                         get { return nesting_type; }
 256                 }
 257
 258                 public void AddDeclarativeSecurity (SecurityAction action, PermissionSet pset)
 259                 {
 260 #if !NET_2_1
 261                         if (pset == null)
 262                                 throw new ArgumentNullException ("pset");
 263                         if ((action == SecurityAction.RequestMinimum) ||
 264                                 (action == SecurityAction.RequestOptional) ||
 265                                 (action == SecurityAction.RequestRefuse))
 266                                 throw new ArgumentOutOfRangeException ("Request* values are not permitted", "action");
 267
 268                         check_not_created ();
 269
 270                         if (permissions != null) {
 271                                 /* Check duplicate actions */
 272                                 foreach (RefEmitPermissionSet set in permissions)
 273                                         if (set.action == action)
 274                                                 throw new InvalidOperationException ("Multiple permission sets specified with the same SecurityAction.");
 275
 276                                 RefEmitPermissionSet[] new_array = new RefEmitPermissionSet [permissions.Length + 1];
 277                                 permissions.CopyTo (new_array, 0);
 278                                 permissions = new_array;
 279                         }
 280                         else
 281                                 permissions = new RefEmitPermissionSet [1];
 282
 283                         permissions [permissions.Length - 1] = new RefEmitPermissionSet (action, pset.ToXml ().ToString ());
 284                         attrs |= TypeAttributes.HasSecurity;
 285 #endif
 286                 }
 287
 288                 [ComVisible (true)]
 289                 public void AddInterfaceImplementation (Type interfaceType)
 290                 {
 291                         if (interfaceType == null)
 292                                 throw new ArgumentNullException ("interfaceType");
 293                         check_not_created ();
 294
 295                         if (interfaces != null) {
 296                                 // Check for duplicates
 297                                 foreach (Type t in interfaces)
 298                                         if (t == interfaceType)
 299                                                 return;
 300
 301                                 Type[] ifnew = new Type [interfaces.Length + 1];
 302                                 interfaces.CopyTo (ifnew, 0);
 303                                 ifnew [interfaces.Length] = interfaceType;
 304                                 interfaces = ifnew;
 305                         } else {
 306                                 interfaces = new Type [1];
 307                                 interfaces [0] = interfaceType;
 308                         }
 309                 }
 310
 311                 protected override ConstructorInfo GetConstructorImpl (BindingFlags bindingAttr, Binder binder,
 312                                                                        CallingConventions callConvention, Type[] types,
 313                                                                        ParameterModifier[] modifiers)
 314                 {
 315                         check_created ();
 316
 317                         if (created == typeof (object)) {
 318                                 /*
 319                                  * This happens when building corlib. Calling created.GetConstructor
 320                                  * would return constructors from the real mscorlib, instead of the
 321                                  * newly built one.
 322                                  */
 323
 324                                 if (ctors == null)
 325                                         return null;
 326
 327                                 ConstructorBuilder found = null;
 328                                 int count = 0;
 329
 330                                 foreach (ConstructorBuilder cb in ctors) {
 331                                         if (callConvention != CallingConventions.Any && cb.CallingConvention != callConvention)
 332                                                 continue;
 333                                         found = cb;
 334                                         count++;
 335                                 }
 336
 337                                 if (count == 0)
 338                                         return null;
 339                                 if (types == null) {
 340                                         if (count > 1)
 341                                                 throw new AmbiguousMatchException ();
 342                                         return found;
 343                                 }
 344                                 MethodBase[] match = new MethodBase [count];
 345                                 if (count == 1)
 346                                         match [0] = found;
 347                                 else {
 348                                         count = 0;
 349                                         foreach (ConstructorInfo m in ctors) {
 350                                                 if (callConvention != CallingConventions.Any && m.CallingConvention != callConvention)
 351                                                         continue;
 352                                                 match [count++] = m;
 353                                         }
 354                                 }
 355                                 if (binder == null)
 356                                         binder = DefaultBinder;
 357                                 return (ConstructorInfo) binder.SelectMethod (bindingAttr, match,
 358                                                                                                                           types, modifiers);
 359                         }
 360
 361                         return created.GetConstructor (bindingAttr, binder,
 362                                 callConvention, types, modifiers);
 363                 }
 364
 365                 public override bool IsDefined (Type attributeType, bool inherit)
 366                 {
 367                         if (!is_created)
 368                                 throw new NotSupportedException ();
 369                         /*
 370                          * MS throws NotSupported here, but we can't because some corlib
 371                          * classes make calls to IsDefined.
 372                          */
 373                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 374                 }
 375
 376                 public override object[] GetCustomAttributes(bool inherit)
 377                 {
 378                         check_created ();
 379
 380                         return created.GetCustomAttributes (inherit);
 381                 }
 382
 383                 public override object[] GetCustomAttributes(Type attributeType, bool inherit)
 384                 {
 385                         check_created ();
 386
 387                         return created.GetCustomAttributes (attributeType, inherit);
 388                 }
 389
 390                 public TypeBuilder DefineNestedType (string name)
 391                 {
 392                         return DefineNestedType (name, TypeAttributes.NestedPrivate,
 393                                 pmodule.assemblyb.corlib_object_type, null);
 394                 }
 395
 396                 public TypeBuilder DefineNestedType (string name, TypeAttributes attr)
 397                 {
 398                         return DefineNestedType (name, attr, pmodule.assemblyb.corlib_object_type, null);
 399                 }
 400
 401                 public TypeBuilder DefineNestedType (string name, TypeAttributes attr, Type parent)
 402                 {
 403                         return DefineNestedType (name, attr, parent, null);
 404                 }
 405
 406                 private TypeBuilder DefineNestedType (string name, TypeAttributes attr, Type parent, Type[] interfaces,
 407                                                       PackingSize packSize, int typeSize)
 408                 {
 409                         // Visibility must be NestedXXX
 410                         /* This breaks mcs
 411                         if (((attrs & TypeAttributes.VisibilityMask) == TypeAttributes.Public) ||
 412                                 ((attrs & TypeAttributes.VisibilityMask) == TypeAttributes.NotPublic))
 413                                 throw new ArgumentException ("attr", "Bad type flags for nested type.");
 414                         */
 415                         if (interfaces != null)
 416                                 foreach (Type iface in interfaces)
 417                                         if (iface == null)
 418                                                 throw new ArgumentNullException ("interfaces");
 419
 420                         TypeBuilder res = new TypeBuilder (pmodule, name, attr, parent, interfaces, packSize, typeSize, this);
 421                         res.fullname = res.GetFullName ();
 422                         pmodule.RegisterTypeName (res, res.fullname);
 423                         if (subtypes != null) {
 424                                 TypeBuilder[] new_types = new TypeBuilder [subtypes.Length + 1];
 425                                 System.Array.Copy (subtypes, new_types, subtypes.Length);
 426                                 new_types [subtypes.Length] = res;
 427                                 subtypes = new_types;
 428                         } else {
 429                                 subtypes = new TypeBuilder [1];
 430                                 subtypes [0] = res;
 431                         }
 432                         return res;
 433                 }
 434
 435                 [ComVisible (true)]
 436                 public TypeBuilder DefineNestedType (string name, TypeAttributes attr, Type parent, Type[] interfaces)
 437                 {
 438                         return DefineNestedType (name, attr, parent, interfaces, PackingSize.Unspecified, UnspecifiedTypeSize);
 439                 }
 440
 441                 public TypeBuilder DefineNestedType (string name, TypeAttributes attr, Type parent, int typeSize)
 442                 {
 443                         return DefineNestedType (name, attr, parent, null, PackingSize.Unspecified, typeSize);
 444                 }
 445
 446                 public TypeBuilder DefineNestedType (string name, TypeAttributes attr, Type parent, PackingSize packSize)
 447                 {
 448                         return DefineNestedType (name, attr, parent, null, packSize, UnspecifiedTypeSize);
 449                 }
 450
 451                 [ComVisible (true)]
 452                 public ConstructorBuilder DefineConstructor (MethodAttributes attributes, CallingConventions callingConvention, Type[] parameterTypes)
 453                 {
 454                         return DefineConstructor (attributes, callingConvention, parameterTypes, null, null);
 455                 }
 456
 457                 [ComVisible (true)]
 458                 public ConstructorBuilder DefineConstructor (MethodAttributes attributes, CallingConventions callingConvention, Type[] parameterTypes, Type[][] requiredCustomModifiers, Type[][] optionalCustomModifiers)
 459                 {
 460                         check_not_created ();
 461                         ConstructorBuilder cb = new ConstructorBuilder (this, attributes,
 462                                 callingConvention, parameterTypes, requiredCustomModifiers,
 463                                 optionalCustomModifiers);
 464                         if (ctors != null) {
 465                                 ConstructorBuilder[] new_ctors = new ConstructorBuilder [ctors.Length+1];
 466                                 System.Array.Copy (ctors, new_ctors, ctors.Length);
 467                                 new_ctors [ctors.Length] = cb;
 468                                 ctors = new_ctors;
 469                         } else {
 470                                 ctors = new ConstructorBuilder [1];
 471                                 ctors [0] = cb;
 472                         }
 473                         return cb;
 474                 }
 475
 476                 [ComVisible (true)]
 477                 public ConstructorBuilder DefineDefaultConstructor (MethodAttributes attributes)
 478                 {
 479                         Type parent_type, old_parent_type;
 480
 481                         if (parent != null)
 482                                 parent_type = parent;
 483                         else
 484                                 parent_type = pmodule.assemblyb.corlib_object_type;
 485
 486                         old_parent_type = parent_type;
 487                         parent_type = parent_type.InternalResolve ();
 488                         /*This avoids corlib to have self references.*/
 489                         if (parent_type == typeof (object) || parent_type == typeof (ValueType))
 490                                 parent_type = old_parent_type;
 491
 492                         ConstructorInfo parent_constructor =
 493                                 parent_type.GetConstructor (
 494                                         BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance,
 495                                         null, Type.EmptyTypes, null);
 496                         if (parent_constructor == null) {
 497                                 throw new NotSupportedException ("Parent does"
 498                                         + " not have a default constructor."
 499                                         + " The default constructor must be"
 500                                         + " explicitly defined.");
 501                         }
 502
 503                         ConstructorBuilder cb = DefineConstructor (attributes,
 504                                 CallingConventions.Standard, Type.EmptyTypes);
 505                         ILGenerator ig = cb.GetILGenerator ();
 506                         ig.Emit (OpCodes.Ldarg_0);
 507                         ig.Emit (OpCodes.Call, parent_constructor);
 508                         ig.Emit (OpCodes.Ret);
 509                         return cb;
 510                 }
 511
 512                 private void append_method (MethodBuilder mb)
 513                 {
 514                         if (methods != null) {
 515                                 if (methods.Length == num_methods) {
 516                                         MethodBuilder[] new_methods = new MethodBuilder [methods.Length * 2];
 517                                         System.Array.Copy (methods, new_methods, num_methods);
 518                                         methods = new_methods;
 519                                 }
 520                         } else {
 521                                 methods = new MethodBuilder [1];
 522                         }
 523                         methods [num_methods] = mb;
 524                         num_methods ++;
 525                 }
 526
 527                 public MethodBuilder DefineMethod (string name, MethodAttributes attributes, Type returnType, Type[] parameterTypes)
 528                 {
 529                         return DefineMethod (name, attributes, CallingConventions.Standard,
 530                                 returnType, parameterTypes);
 531                 }
 532
 533                 public MethodBuilder DefineMethod (string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes)
 534                 {
 535                         return DefineMethod (name, attributes, callingConvention, returnType,
 536                                 null, null, parameterTypes, null, null);
 537                 }
 538
 539                 public MethodBuilder DefineMethod (string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] returnTypeRequiredCustomModifiers, Type[] returnTypeOptionalCustomModifiers, Type[] parameterTypes, Type[][] parameterTypeRequiredCustomModifiers, Type[][] parameterTypeOptionalCustomModifiers)
 540                 {
 541                         check_name ("name", name);
 542                         check_not_created ();
 543                         if (IsInterface && (
 544                                 !((attributes & MethodAttributes.Abstract) != 0) ||
 545                                 !((attributes & MethodAttributes.Virtual) != 0)) &&
 546                                 !(((attributes & MethodAttributes.Static) != 0)))
 547                                 throw new ArgumentException ("Interface method must be abstract and virtual.");
 548
 549                         if (returnType == null)
 550                                 returnType = pmodule.assemblyb.corlib_void_type;
 551                         MethodBuilder res = new MethodBuilder (this, name, attributes,
 552                                 callingConvention, returnType,
 553                                 returnTypeRequiredCustomModifiers,
 554                                 returnTypeOptionalCustomModifiers, parameterTypes,
 555                                 parameterTypeRequiredCustomModifiers,
 556                                 parameterTypeOptionalCustomModifiers);
 557                         append_method (res);
 558                         return res;
 559                 }
 560
 561                 public MethodBuilder DefinePInvokeMethod (string name, string dllName, string entryName, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes, CallingConvention nativeCallConv, CharSet nativeCharSet)
 562                 {
 563                         return DefinePInvokeMethod (name, dllName, entryName, attributes,
 564                                 callingConvention, returnType, null, null, parameterTypes,
 565                                 null, null, nativeCallConv, nativeCharSet);
 566                 }
 567
 568                 public MethodBuilder DefinePInvokeMethod (
 569                                                 string name,
 570                                                 string dllName,
 571                                                 string entryName, MethodAttributes attributes,
 572                                                 CallingConventions callingConvention,
 573                                                 Type returnType,
 574                                                 Type[] returnTypeRequiredCustomModifiers,
 575                                                 Type[] returnTypeOptionalCustomModifiers,
 576                                                 Type[] parameterTypes,
 577                                                 Type[][] parameterTypeRequiredCustomModifiers,
 578                                                 Type[][] parameterTypeOptionalCustomModifiers,
 579                                                 CallingConvention nativeCallConv,
 580                                                 CharSet nativeCharSet)
 581                 {
 582                         check_name ("name", name);
 583                         check_name ("dllName", dllName);
 584                         check_name ("entryName", entryName);
 585                         if ((attributes & MethodAttributes.Abstract) != 0)
 586                                 throw new ArgumentException ("PInvoke methods must be static and native and cannot be abstract.");
 587                         if (IsInterface)
 588                                 throw new ArgumentException ("PInvoke methods cannot exist on interfaces.");
 589                         check_not_created ();
 590
 591                         MethodBuilder res
 592                                 = new MethodBuilder (
 593                                                 this,
 594                                                 name,
 595                                                 attributes,
 596                                                 callingConvention,
 597                                                 returnType,
 598                                                 returnTypeRequiredCustomModifiers,
 599                                                 returnTypeOptionalCustomModifiers,
 600                                                 parameterTypes,
 601                                                 parameterTypeRequiredCustomModifiers,
 602                                                 parameterTypeOptionalCustomModifiers,
 603                                                 dllName,
 604                                                 entryName,
 605                                                 nativeCallConv,
 606                                                 nativeCharSet);
 607                         append_method (res);
 608                         return res;
 609                 }
 610
 611                 public MethodBuilder DefinePInvokeMethod (string name, string dllName, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes, CallingConvention nativeCallConv, CharSet nativeCharSet) {
 612                         return DefinePInvokeMethod (name, dllName, name, attributes, callingConvention, returnType, parameterTypes,
 613                                 nativeCallConv, nativeCharSet);
 614                 }
 615
 616                 public MethodBuilder DefineMethod (string name, MethodAttributes attributes)
 617                 {
 618                         return DefineMethod (name, attributes, CallingConventions.Standard);
 619                 }
 620
 621                 public MethodBuilder DefineMethod (string name, MethodAttributes attributes, CallingConventions callingConvention)
 622                 {
 623                         return DefineMethod (name, attributes, callingConvention, null, null);
 624                 }
 625
 626                 public void DefineMethodOverride (MethodInfo methodInfoBody, MethodInfo methodInfoDeclaration)
 627                 {
 628                         if (methodInfoBody == null)
 629                                 throw new ArgumentNullException ("methodInfoBody");
 630                         if (methodInfoDeclaration == null)
 631                                 throw new ArgumentNullException ("methodInfoDeclaration");
 632                         check_not_created ();
 633                         if (methodInfoBody.DeclaringType != this)
 634                                 throw new ArgumentException ("method body must belong to this type");
 635
 636                         if (methodInfoBody is MethodBuilder) {
 637                                 MethodBuilder mb = (MethodBuilder)methodInfoBody;
 638                                 mb.set_override (methodInfoDeclaration);
 639                         }
 640                 }
 641
 642                 public FieldBuilder DefineField (string fieldName, Type type, FieldAttributes attributes)
 643                 {
 644                         return DefineField (fieldName, type, null, null, attributes);
 645                 }
 646
 647                 public FieldBuilder DefineField (string fieldName, Type type, Type[] requiredCustomModifiers, Type[] optionalCustomModifiers, FieldAttributes attributes)
 648                 {
 649                         check_name ("fieldName", fieldName);
 650                         if (type == typeof (void))
 651                                 throw new ArgumentException ("Bad field type in defining field.");
 652                         check_not_created ();
 653
 654                         FieldBuilder res = new FieldBuilder (this, fieldName, type, attributes, requiredCustomModifiers, optionalCustomModifiers);
 655                         if (fields != null) {
 656                                 if (fields.Length == num_fields) {
 657                                         FieldBuilder[] new_fields = new FieldBuilder [fields.Length * 2];
 658                                         System.Array.Copy (fields, new_fields, num_fields);
 659                                         fields = new_fields;
 660                                 }
 661                                 fields [num_fields] = res;
 662                                 num_fields ++;
 663                         } else {
 664                                 fields = new FieldBuilder [1];
 665                                 fields [0] = res;
 666                                 num_fields ++;
 667                                 create_internal_class (this);
 668                         }
 669
 670                         if (IsEnum) {
 671                                 if (underlying_type == null && (attributes & FieldAttributes.Static) == 0)
 672                                         underlying_type = type;
 673                         }
 674
 675                         return res;
 676                 }
 677
 678                 public PropertyBuilder DefineProperty (string name, PropertyAttributes attributes, Type returnType, Type[] parameterTypes)
 679                 {
 680                         return DefineProperty (name, attributes, 0, returnType, null, null, parameterTypes, null, null);
 681                 }
 682
 683                 public PropertyBuilder DefineProperty (string name, PropertyAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes)
 684                 {
 685                         return DefineProperty (name, attributes, callingConvention, returnType , null, null, parameterTypes, null, null);
 686                 }
 687
 688                 public PropertyBuilder DefineProperty (string name, PropertyAttributes attributes, Type returnType, Type[] returnTypeRequiredCustomModifiers, Type[] returnTypeOptionalCustomModifiers, Type[] parameterTypes, Type[][] parameterTypeRequiredCustomModifiers, Type[][] parameterTypeOptionalCustomModifiers)
 689                 {
 690                         return DefineProperty (name, attributes, 0, returnType, returnTypeRequiredCustomModifiers, returnTypeOptionalCustomModifiers, parameterTypes, parameterTypeRequiredCustomModifiers, parameterTypeOptionalCustomModifiers);
 691                 }
 692
 693                 public PropertyBuilder DefineProperty (string name, PropertyAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] returnTypeRequiredCustomModifiers, Type[] returnTypeOptionalCustomModifiers, Type[] parameterTypes, Type[][] parameterTypeRequiredCustomModifiers, Type[][] parameterTypeOptionalCustomModifiers)
 694                 {
 695                         check_name ("name", name);
 696                         if (parameterTypes != null)
 697                                 foreach (Type param in parameterTypes)
 698                                         if (param == null)
 699                                                 throw new ArgumentNullException ("parameterTypes");
 700                         check_not_created ();
 701
 702                         PropertyBuilder res = new PropertyBuilder (this, name, attributes, callingConvention, returnType, returnTypeRequiredCustomModifiers, returnTypeOptionalCustomModifiers, parameterTypes, parameterTypeRequiredCustomModifiers, parameterTypeOptionalCustomModifiers);
 703
 704                         if (properties != null) {
 705                                 Array.Resize (ref properties, properties.Length + 1);
 706                                 properties [properties.Length - 1] = res;
 707                         } else {
 708                                 properties = new PropertyBuilder [1] { res };
 709                         }
 710                         return res;
 711                 }
 712
 713                 [ComVisible (true)]
 714                 public ConstructorBuilder DefineTypeInitializer()
 715                 {
 716                         return DefineConstructor (MethodAttributes.Public |
 717                                 MethodAttributes.Static | MethodAttributes.SpecialName |
 718                                 MethodAttributes.RTSpecialName, CallingConventions.Standard,
 719                                 null);
 720                 }
 721
 722                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 723                 private extern TypeInfo create_runtime_class (TypeBuilder tb);
 724
 725                 private bool is_nested_in (Type t)
 726                 {
 727                         while (t != null) {
 728                                 if (t == this)
 729                                         return true;
 730                                 else
 731                                         t = t.DeclaringType;
 732                         }
 733                         return false;
 734                 }
 735
 736                 // Return whenever this type has a ctor defined using DefineMethod ()
 737                 private bool has_ctor_method () {
 738                         MethodAttributes ctor_attrs = MethodAttributes.SpecialName | MethodAttributes.RTSpecialName;
 739
 740                         for (int i = 0; i < num_methods; ++i) {
 741                                 MethodBuilder mb = (MethodBuilder)(methods[i]);
 742
 743                                 if (mb.Name == ConstructorInfo.ConstructorName && (mb.Attributes & ctor_attrs) == ctor_attrs)
 744                                         return true;
 745                         }
 746
 747                         return false;
 748             }
 749
 750                 public Type CreateType ()
 751                 {
 752                         return CreateTypeInfo ();
 753                 }
 754
 755                 public
 756                 TypeInfo CreateTypeInfo ()
 757                 {
 758                         /* handle nesting_type */
 759                         if (createTypeCalled)
 760                                 return created;
 761
 762                         if (!IsInterface && (parent == null) && (this != pmodule.assemblyb.corlib_object_type) && (FullName != "<Module>")) {
 763                                 SetParent (pmodule.assemblyb.corlib_object_type);
 764                         }
 765
 766                         create_generic_class ();
 767
 768                         // Fire TypeResolve events for fields whose type is an unfinished
 769                         // value type.
 770                         if (fields != null) {
 771                                 foreach (FieldBuilder fb in fields) {
 772                                         if (fb == null)
 773                                                 continue;
 774                                         Type ft = fb.FieldType;
 775                                         if (!fb.IsStatic && (ft is TypeBuilder) && ft.IsValueType && (ft != this) && is_nested_in (ft)) {
 776                                                 TypeBuilder tb = (TypeBuilder)ft;
 777                                                 if (!tb.is_created) {
 778                                                         AppDomain.CurrentDomain.DoTypeResolve (tb);
 779                                                         if (!tb.is_created) {
 780                                                                 // FIXME: We should throw an exception here,
 781                                                                 // but mcs expects that the type is created
 782                                                                 // even if the exception is thrown
 783                                                                 //throw new TypeLoadException ("Could not load type " + tb);
 784                                                         }
 785                                                 }
 786                                         }
 787                                 }
 788                         }
 789
 790                         //
 791                         // On classes, define a default constructor if not provided
 792                         //
 793                         if (!(IsInterface || IsValueType) && (ctors == null) && (tname != "<Module>") &&
 794                                 (GetAttributeFlagsImpl () & TypeAttributes.Abstract | TypeAttributes.Sealed) != (TypeAttributes.Abstract | TypeAttributes.Sealed) && !has_ctor_method ())
 795                                 DefineDefaultConstructor (MethodAttributes.Public);
 796
 797                         createTypeCalled = true;
 798
 799                         if ((parent != null) && parent.IsSealed)
 800                                 throw new TypeLoadException ("Could not load type '" + FullName + "' from assembly '" + Assembly + "' because the parent type is sealed.");
 801
 802                         if (parent == pmodule.assemblyb.corlib_enum_type && methods != null)
 803                                 throw new TypeLoadException ("Could not load type '" + FullName + "' from assembly '" + Assembly + "' because it is an enum with methods.");
 804                         if (interfaces != null) {
 805                                 foreach (var iface in interfaces) {
 806                                         if (iface.IsNestedPrivate && iface.Assembly != Assembly)
 807                                                 throw new TypeLoadException ("Could not load type '" + FullName + "' from assembly '" + Assembly + "' because it is implements the inaccessible interface '" + iface.FullName + "'.");
 808                                 }
 809                         }
 810
 811                         if (methods != null) {
 812                                 bool is_concrete = !IsAbstract;
 813                                 for (int i = 0; i < num_methods; ++i) {
 814                                         MethodBuilder mb = (MethodBuilder)(methods[i]);
 815                                         if (is_concrete && mb.IsAbstract)
 816                                                 throw new InvalidOperationException ("Type is concrete but has abstract method " + mb);
 817                                         mb.check_override ();
 818                                         mb.fixup ();
 819                                 }
 820                         }
 821
 822                         if (ctors != null){
 823                                 foreach (ConstructorBuilder ctor in ctors)
 824                                         ctor.fixup ();
 825                         }
 826
 827                         created = create_runtime_class (this);
 828                         if (created != null)
 829                                 return created;
 830                         return this;
 831                 }
 832
 833                 internal void GenerateDebugInfo (ISymbolWriter symbolWriter)
 834                 {
 835                         symbolWriter.OpenNamespace (this.Namespace);
 836
 837                         if (methods != null) {
 838                                 for (int i = 0; i < num_methods; ++i) {
 839                                         MethodBuilder metb = (MethodBuilder) methods[i];
 840                                         metb.GenerateDebugInfo (symbolWriter);
 841                                 }
 842                         }
 843
 844                         if (ctors != null) {
 845                                 foreach (ConstructorBuilder ctor in ctors)
 846                                         ctor.GenerateDebugInfo (symbolWriter);
 847                         }
 848
 849                         symbolWriter.CloseNamespace ();
 850
 851                         if (subtypes != null) {
 852                                 for (int i = 0; i < subtypes.Length; ++i)
 853                                         subtypes [i].GenerateDebugInfo (symbolWriter);
 854                         }
 855                 }
 856
 857                 [ComVisible (true)]
 858                 public override ConstructorInfo[] GetConstructors (BindingFlags bindingAttr)
 859                 {
 860                         if (is_created)
 861                                 return created.GetConstructors (bindingAttr);
 862
 863                         throw new NotSupportedException ();
 864                 }
 865
 866                 internal ConstructorInfo[] GetConstructorsInternal (BindingFlags bindingAttr)
 867                 {
 868                         if (ctors == null)
 869                                 return new ConstructorInfo [0];
 870                         ArrayList l = new ArrayList ();
 871                         bool match;
 872                         MethodAttributes mattrs;
 873
 874                         foreach (ConstructorBuilder c in ctors) {
 875                                 match = false;
 876                                 mattrs = c.Attributes;
 877                                 if ((mattrs & MethodAttributes.MemberAccessMask) == MethodAttributes.Public) {
 878                                         if ((bindingAttr & BindingFlags.Public) != 0)
 879                                                 match = true;
 880                                 } else {
 881                                         if ((bindingAttr & BindingFlags.NonPublic) != 0)
 882                                                 match = true;
 883                                 }
 884                                 if (!match)
 885                                         continue;
 886                                 match = false;
 887                                 if ((mattrs & MethodAttributes.Static) != 0) {
 888                                         if ((bindingAttr & BindingFlags.Static) != 0)
 889                                                 match = true;
 890                                 } else {
 891                                         if ((bindingAttr & BindingFlags.Instance) != 0)
 892                                                 match = true;
 893                                 }
 894                                 if (!match)
 895                                         continue;
 896                                 l.Add (c);
 897                         }
 898                         ConstructorInfo[] result = new ConstructorInfo [l.Count];
 899                         l.CopyTo (result);
 900                         return result;
 901                 }
 902
 903                 public override Type GetElementType ()
 904                 {
 905                         throw new NotSupportedException ();
 906                 }
 907
 908                 public override EventInfo GetEvent (string name, BindingFlags bindingAttr)
 909                 {
 910                         check_created ();
 911                         return created.GetEvent (name, bindingAttr);
 912                 }
 913
 914                 /* Needed to keep signature compatibility with MS.NET */
 915                 public override EventInfo[] GetEvents ()
 916                 {
 917                         const BindingFlags DefaultBindingFlags = BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance;
 918                         return GetEvents (DefaultBindingFlags);
 919                 }
 920
 921                 public override EventInfo[] GetEvents (BindingFlags bindingAttr)
 922                 {
 923                         if (is_created)
 924                                 return created.GetEvents (bindingAttr);
 925                         throw new NotSupportedException ();
 926                 }
 927
 928                 // This is only used from MonoGenericInst.initialize().
 929                 internal EventInfo[] GetEvents_internal (BindingFlags bindingAttr)
 930                 {
 931                         if (events == null)
 932                                 return new EventInfo [0];
 933                         ArrayList l = new ArrayList ();
 934                         bool match;
 935                         MethodAttributes mattrs;
 936                         MethodInfo accessor;
 937
 938                         foreach (EventBuilder eb in events) {
 939                                 if (eb == null)
 940                                         continue;
 941                                 EventInfo c = get_event_info (eb);
 942                                 match = false;
 943                                 accessor = c.GetAddMethod (true);
 944                                 if (accessor == null)
 945                                         accessor = c.GetRemoveMethod (true);
 946                                 if (accessor == null)
 947                                         continue;
 948                                 mattrs = accessor.Attributes;
 949                                 if ((mattrs & MethodAttributes.MemberAccessMask) == MethodAttributes.Public) {
 950                                         if ((bindingAttr & BindingFlags.Public) != 0)
 951                                                 match = true;
 952                                 } else {
 953                                         if ((bindingAttr & BindingFlags.NonPublic) != 0)
 954                                                 match = true;
 955                                 }
 956                                 if (!match)
 957                                         continue;
 958                                 match = false;
 959                                 if ((mattrs & MethodAttributes.Static) != 0) {
 960                                         if ((bindingAttr & BindingFlags.Static) != 0)
 961                                                 match = true;
 962                                 } else {
 963                                         if ((bindingAttr & BindingFlags.Instance) != 0)
 964                                                 match = true;
 965                                 }
 966                                 if (!match)
 967                                         continue;
 968                                 l.Add (c);
 969                         }
 970                         EventInfo[] result = new EventInfo [l.Count];
 971                         l.CopyTo (result);
 972                         return result;
 973                 }
 974
 975                 public override FieldInfo GetField (string name, BindingFlags bindingAttr)
 976                 {
 977                         if (created != null)
 978                                 return created.GetField (name, bindingAttr);
 979
 980                         if (fields == null)
 981                                 return null;
 982
 983                         bool match;
 984                         FieldAttributes mattrs;
 985
 986                         foreach (FieldInfo c in fields) {
 987                                 if (c == null)
 988                                         continue;
 989                                 if (c.Name != name)
 990                                         continue;
 991                                 match = false;
 992                                 mattrs = c.Attributes;
 993                                 if ((mattrs & FieldAttributes.FieldAccessMask) == FieldAttributes.Public) {
 994                                         if ((bindingAttr & BindingFlags.Public) != 0)
 995                                                 match = true;
 996                                 } else {
 997                                         if ((bindingAttr & BindingFlags.NonPublic) != 0)
 998                                                 match = true;
 999                                 }
1000                                 if (!match)
1001                                         continue;
1002                                 match = false;
1003                                 if ((mattrs & FieldAttributes.Static) != 0) {
1004                                         if ((bindingAttr & BindingFlags.Static) != 0)
1005                                                 match = true;
1006                                 } else {
1007                                         if ((bindingAttr & BindingFlags.Instance) != 0)
1008                                                 match = true;
1009                                 }
1010                                 if (!match)
1011                                         continue;
1012                                 return c;
1013                         }
1014                         return null;
1015                 }
1016
1017                 public override FieldInfo[] GetFields (BindingFlags bindingAttr)
1018                 {
1019                         if (created != null)
1020                                 return created.GetFields (bindingAttr);
1021
1022                         if (fields == null)
1023                                 return new FieldInfo [0];
1024                         ArrayList l = new ArrayList ();
1025                         bool match;
1026                         FieldAttributes mattrs;
1027
1028                         foreach (FieldInfo c in fields) {
1029                                 if (c == null)
1030                                         continue;
1031                                 match = false;
1032                                 mattrs = c.Attributes;
1033                                 if ((mattrs & FieldAttributes.FieldAccessMask) == FieldAttributes.Public) {
1034                                         if ((bindingAttr & BindingFlags.Public) != 0)
1035                                                 match = true;
1036                                 } else {
1037                                         if ((bindingAttr & BindingFlags.NonPublic) != 0)
1038                                                 match = true;
1039                                 }
1040                                 if (!match)
1041                                         continue;
1042                                 match = false;
1043                                 if ((mattrs & FieldAttributes.Static) != 0) {
1044                                         if ((bindingAttr & BindingFlags.Static) != 0)
1045                                                 match = true;
1046                                 } else {
1047                                         if ((bindingAttr & BindingFlags.Instance) != 0)
1048                                                 match = true;
1049                                 }
1050                                 if (!match)
1051                                         continue;
1052                                 l.Add (c);
1053                         }
1054                         FieldInfo[] result = new FieldInfo [l.Count];
1055                         l.CopyTo (result);
1056                         return result;
1057                 }
1058
1059                 public override Type GetInterface (string name, bool ignoreCase)
1060                 {
1061                         check_created ();
1062                         return created.GetInterface (name, ignoreCase);
1063                 }
1064
1065                 public override Type[] GetInterfaces ()
1066                 {
1067                         if (is_created)
1068                                 return created.GetInterfaces ();
1069
1070                         if (interfaces != null) {
1071                                 Type[] ret = new Type [interfaces.Length];
1072                                 interfaces.CopyTo (ret, 0);
1073                                 return ret;
1074                         } else {
1075                                 return Type.EmptyTypes;
1076                         }
1077                 }
1078
1079                 public override MemberInfo[] GetMember (string name, MemberTypes type,
1080                                                                                                 BindingFlags bindingAttr)
1081                 {
1082                         check_created ();
1083                         return created.GetMember (name, type, bindingAttr);
1084                 }
1085
1086                 public override MemberInfo[] GetMembers (BindingFlags bindingAttr)
1087                 {
1088                         check_created ();
1089                         return created.GetMembers (bindingAttr);
1090                 }
1091
1092                 private MethodInfo[] GetMethodsByName (string name, BindingFlags bindingAttr, bool ignoreCase, Type reflected_type)
1093                 {
1094                         MethodInfo[] candidates;
1095                         bool match;
1096                         MethodAttributes mattrs;
1097
1098                         if (((bindingAttr & BindingFlags.DeclaredOnly) == 0) && (parent != null)) {
1099                                 MethodInfo [] parent_methods = parent.GetMethods (bindingAttr);
1100                                 ArrayList parent_candidates = new ArrayList (parent_methods.Length);
1101
1102                                 bool flatten = (bindingAttr & BindingFlags.FlattenHierarchy) != 0;
1103
1104                                 for (int i = 0; i < parent_methods.Length; i++) {
1105                                         MethodInfo m = parent_methods [i];
1106
1107                                         mattrs = m.Attributes;
1108
1109                                         if (m.IsStatic && !flatten)
1110                                                 continue;
1111
1112                                         switch (mattrs & MethodAttributes.MemberAccessMask) {
1113                                         case MethodAttributes.Public:
1114                                                 match = (bindingAttr & BindingFlags.Public) != 0;
1115                                                 break;
1116                                         case MethodAttributes.Assembly:
1117                                                 match = (bindingAttr & BindingFlags.NonPublic) != 0;
1118                                                 break;
1119                                         case MethodAttributes.Private:
1120                                                 match = false;
1121                                                 break;
1122                                         default:
1123                                                 match = (bindingAttr & BindingFlags.NonPublic) != 0;
1124                                                 break;
1125                                         }
1126
1127                                         if (match)
1128                                                 parent_candidates.Add (m);
1129                                 }
1130
1131                                 if (methods == null) {
1132                                         candidates = new MethodInfo [parent_candidates.Count];
1133                                         parent_candidates.CopyTo (candidates);
1134                                 } else {
1135                                         candidates = new MethodInfo [methods.Length + parent_candidates.Count];
1136                                         parent_candidates.CopyTo (candidates, 0);
1137                                         methods.CopyTo (candidates, parent_candidates.Count);
1138                                 }
1139                         }
1140                         else
1141                                 candidates = methods;
1142
1143                         if (candidates == null)
1144                                 return new MethodInfo [0];
1145
1146                         ArrayList l = new ArrayList ();
1147
1148                         foreach (MethodInfo c in candidates) {
1149                                 if (c == null)
1150                                         continue;
1151                                 if (name != null) {
1152                                         if (String.Compare (c.Name, name, ignoreCase) != 0)
1153                                                 continue;
1154                                 }
1155                                 match = false;
1156                                 mattrs = c.Attributes;
1157                                 if ((mattrs & MethodAttributes.MemberAccessMask) == MethodAttributes.Public) {
1158                                         if ((bindingAttr & BindingFlags.Public) != 0)
1159                                                 match = true;
1160                                 } else {
1161                                         if ((bindingAttr & BindingFlags.NonPublic) != 0)
1162                                                 match = true;
1163                                 }
1164                                 if (!match)
1165                                         continue;
1166                                 match = false;
1167                                 if ((mattrs & MethodAttributes.Static) != 0) {
1168                                         if ((bindingAttr & BindingFlags.Static) != 0)
1169                                                 match = true;
1170                                 } else {
1171                                         if ((bindingAttr & BindingFlags.Instance) != 0)
1172                                                 match = true;
1173                                 }
1174                                 if (!match)
1175                                         continue;
1176                                 l.Add (c);
1177                         }
1178
1179                         MethodInfo[] result = new MethodInfo [l.Count];
1180                         l.CopyTo (result);
1181                         return result;
1182                 }
1183
1184                 public override MethodInfo[] GetMethods (BindingFlags bindingAttr)
1185                 {
1186                         return GetMethodsByName (null, bindingAttr, false, this);
1187                 }
1188
1189                 protected override MethodInfo GetMethodImpl (string name, BindingFlags bindingAttr,
1190                                                              Binder binder,
1191                                                              CallingConventions callConvention,
1192                                                              Type[] types, ParameterModifier[] modifiers)
1193                 {
1194                         check_created ();
1195
1196                         if (types == null)
1197                                 return created.GetMethod (name, bindingAttr);
1198
1199                         return created.GetMethod (name, bindingAttr, binder, callConvention, types, modifiers);
1200                 }
1201
1202                 public override Type GetNestedType (string name, BindingFlags bindingAttr)
1203                 {
1204                         check_created ();
1205
1206                         if (subtypes == null)
1207                                 return null;
1208
1209                         foreach (TypeBuilder t in subtypes) {
1210                                 if (!t.is_created)
1211                                         continue;
1212                                 if ((t.attrs & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPublic) {
1213                                         if ((bindingAttr & BindingFlags.Public) == 0)
1214                                                 continue;
1215                                 } else {
1216                                         if ((bindingAttr & BindingFlags.NonPublic) == 0)
1217                                                 continue;
1218                                 }
1219                                 if (t.Name == name)
1220                                         return t.created;
1221                         }
1222
1223                         return null;
1224                 }
1225
1226                 public override Type[] GetNestedTypes (BindingFlags bindingAttr)
1227                 {
1228                         if (!is_created)
1229                                 throw new NotSupportedException ();
1230
1231                         bool match;
1232                         ArrayList result = new ArrayList ();
1233
1234                         if (subtypes == null)
1235                                 return Type.EmptyTypes;
1236                         foreach (TypeBuilder t in subtypes) {
1237                                 match = false;
1238                                 if ((t.attrs & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPublic) {
1239                                         if ((bindingAttr & BindingFlags.Public) != 0)
1240                                                 match = true;
1241                                 } else {
1242                                         if ((bindingAttr & BindingFlags.NonPublic) != 0)
1243                                                 match = true;
1244                                 }
1245                                 if (!match)
1246                                         continue;
1247                                 result.Add (t);
1248                         }
1249                         Type[] r = new Type [result.Count];
1250                         result.CopyTo (r);
1251                         return r;
1252                 }
1253
1254                 public override PropertyInfo[] GetProperties (BindingFlags bindingAttr)
1255                 {
1256                         if (is_created)
1257                                 return created.GetProperties (bindingAttr);
1258
1259                         if (properties == null)
1260                                 return new PropertyInfo [0];
1261                         ArrayList l = new ArrayList ();
1262                         bool match;
1263                         MethodAttributes mattrs;
1264                         MethodInfo accessor;
1265
1266                         foreach (PropertyInfo c in properties) {
1267                                 match = false;
1268                                 accessor = c.GetGetMethod (true);
1269                                 if (accessor == null)
1270                                         accessor = c.GetSetMethod (true);
1271                                 if (accessor == null)
1272                                         continue;
1273                                 mattrs = accessor.Attributes;
1274                                 if ((mattrs & MethodAttributes.MemberAccessMask) == MethodAttributes.Public) {
1275                                         if ((bindingAttr & BindingFlags.Public) != 0)
1276                                                 match = true;
1277                                 } else {
1278                                         if ((bindingAttr & BindingFlags.NonPublic) != 0)
1279                                                 match = true;
1280                                 }
1281                                 if (!match)
1282                                         continue;
1283                                 match = false;
1284                                 if ((mattrs & MethodAttributes.Static) != 0) {
1285                                         if ((bindingAttr & BindingFlags.Static) != 0)
1286                                                 match = true;
1287                                 } else {
1288                                         if ((bindingAttr & BindingFlags.Instance) != 0)
1289                                                 match = true;
1290                                 }
1291                                 if (!match)
1292                                         continue;
1293                                 l.Add (c);
1294                         }
1295                         PropertyInfo[] result = new PropertyInfo [l.Count];
1296                         l.CopyTo (result);
1297                         return result;
1298                 }
1299
1300                 protected override PropertyInfo GetPropertyImpl (string name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers)
1301                 {
1302                         throw not_supported ();
1303                 }
1304
1305                 protected override bool HasElementTypeImpl ()
1306                 {
1307                         // a TypeBuilder can never represent an array, pointer
1308                         if (!is_created)
1309                                 return false;
1310
1311                         return created.HasElementType;
1312                 }
1313
1314                 public override object InvokeMember (string name, BindingFlags invokeAttr, Binder binder, object target, object[] args, ParameterModifier[] modifiers, CultureInfo culture, string[] namedParameters)
1315                 {
1316                         check_created ();
1317                         return created.InvokeMember (name, invokeAttr, binder, target, args, modifiers, culture, namedParameters);
1318                 }
1319
1320                 protected override bool IsArrayImpl ()
1321                 {
1322                         return false; /*A TypeBuilder never represents a non typedef type.*/
1323                 }
1324
1325                 protected override bool IsByRefImpl ()
1326                 {
1327                         return false; /*A TypeBuilder never represents a non typedef type.*/
1328                 }
1329
1330                 protected override bool IsCOMObjectImpl ()
1331                 {
1332                         return ((GetAttributeFlagsImpl () & TypeAttributes.Import) != 0);
1333                 }
1334
1335                 protected override bool IsPointerImpl ()
1336                 {
1337                         return false; /*A TypeBuilder never represents a non typedef type.*/
1338                 }
1339
1340                 protected override bool IsPrimitiveImpl ()
1341                 {
1342                         // FIXME
1343                         return false;
1344                 }
1345
1346                 // FIXME: I doubt just removing this still works.
1347                 protected override bool IsValueTypeImpl ()
1348                 {
1349                         if (this == pmodule.assemblyb.corlib_value_type || this == pmodule.assemblyb.corlib_enum_type)
1350                                 return false;
1351                         Type parent_type = parent;
1352                         while (parent_type != null) {
1353                                 if (parent_type == pmodule.assemblyb.corlib_value_type)
1354                                         return true;
1355                                 parent_type = parent_type.BaseType;
1356                         }
1357                         return false;
1358                 }
1359
1360                 public override Type MakeArrayType ()
1361                 {
1362                         return new ArrayType (this, 0);
1363                 }
1364
1365                 public override Type MakeArrayType (int rank)
1366                 {
1367                         if (rank < 1)
1368                                 throw new IndexOutOfRangeException ();
1369                         return new ArrayType (this, rank);
1370                 }
1371
1372                 public override Type MakeByRefType ()
1373                 {
1374                         return new ByRefType (this);
1375                 }
1376
1377                 public override Type MakeGenericType (params Type [] typeArguments)
1378                 {
1379                         //return base.MakeGenericType (typeArguments);
1380
1381                         if (!IsGenericTypeDefinition)
1382                                 throw new InvalidOperationException ("not a generic type definition");
1383                         if (typeArguments == null)
1384                                 throw new ArgumentNullException ("typeArguments");
1385
1386                         if (generic_params.Length != typeArguments.Length)
1387                                 throw new ArgumentException (String.Format ("The type or method has {0} generic parameter(s) but {1} generic argument(s) where provided. A generic argument must be provided for each generic parameter.", generic_params.Length, typeArguments.Length), "typeArguments");
1388
1389                         foreach (Type t in typeArguments) {
1390                                 if (t == null)
1391                                         throw new ArgumentNullException ("typeArguments");
1392                         }
1393
1394                         Type[] copy = new Type [typeArguments.Length];
1395                         typeArguments.CopyTo (copy, 0);
1396                         return pmodule.assemblyb.MakeGenericType (this, copy);
1397                 }
1398
1399                 public override Type MakePointerType ()
1400                 {
1401                         return new PointerType (this);
1402                 }
1403
1404                 public override RuntimeTypeHandle TypeHandle {
1405                         get {
1406                                 check_created ();
1407                                 return created.TypeHandle;
1408                         }
1409                 }
1410
1411                 public void SetCustomAttribute (CustomAttributeBuilder customBuilder)
1412                 {
1413                         if (customBuilder == null)
1414                                 throw new ArgumentNullException ("customBuilder");
1415
1416                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
1417                         if (attrname == "System.Runtime.InteropServices.StructLayoutAttribute") {
1418                                 byte[] data = customBuilder.Data;
1419                                 int layout_kind; /* the (stupid) ctor takes a short or an int ... */
1420                                 layout_kind = (int)data [2];
1421                                 layout_kind |= ((int)data [3]) << 8;
1422                                 attrs &= ~TypeAttributes.LayoutMask;
1423                                 switch ((LayoutKind)layout_kind) {
1424                                 case LayoutKind.Auto:
1425                                         attrs |= TypeAttributes.AutoLayout;
1426                                         break;
1427                                 case LayoutKind.Explicit:
1428                                         attrs |= TypeAttributes.ExplicitLayout;
1429                                         break;
1430                                 case LayoutKind.Sequential:
1431                                         attrs |= TypeAttributes.SequentialLayout;
1432                                         break;
1433                                 default:
1434                                         // we should ignore it since it can be any value anyway...
1435                                         throw new Exception ("Error in customattr");
1436                                 }
1437
1438                                 var ctor_type = customBuilder.Ctor is ConstructorBuilder ? ((ConstructorBuilder)customBuilder.Ctor).parameters[0] : customBuilder.Ctor.GetParametersInternal()[0].ParameterType;
1439                                 int pos = 6;
1440                                 if (ctor_type.FullName == "System.Int16")
1441                                         pos = 4;
1442                                 int nnamed = (int)data [pos++];
1443                                 nnamed |= ((int)data [pos++]) << 8;
1444                                 for (int i = 0; i < nnamed; ++i) {
1445                                         //byte named_type = data [pos++];
1446                                         pos ++;
1447                                         byte type = data [pos++];
1448                                         int len;
1449                                         string named_name;
1450
1451                                         if (type == 0x55) {
1452                                                 len = CustomAttributeBuilder.decode_len (data, pos, out pos);
1453                                                 //string named_typename =
1454                                                 CustomAttributeBuilder.string_from_bytes (data, pos, len);
1455                                                 pos += len;
1456                                                 // FIXME: Check that 'named_type' and 'named_typename' match, etc.
1457                                                 //        See related code/FIXME in mono/mono/metadata/reflection.c
1458                                         }
1459
1460                                         len = CustomAttributeBuilder.decode_len (data, pos, out pos);
1461                                         named_name = CustomAttributeBuilder.string_from_bytes (data, pos, len);
1462                                         pos += len;
1463                                         /* all the fields are integers in StructLayout */
1464                                         int value = (int)data [pos++];
1465                                         value |= ((int)data [pos++]) << 8;
1466                                         value |= ((int)data [pos++]) << 16;
1467                                         value |= ((int)data [pos++]) << 24;
1468                                         switch (named_name) {
1469                                         case "CharSet":
1470                                                 switch ((CharSet)value) {
1471                                                 case CharSet.None:
1472                                                 case CharSet.Ansi:
1473                                                         attrs &= ~(TypeAttributes.UnicodeClass | TypeAttributes.AutoClass);
1474                                                         break;
1475                                                 case CharSet.Unicode:
1476                                                         attrs &= ~TypeAttributes.AutoClass;
1477                                                         attrs |= TypeAttributes.UnicodeClass;
1478                                                         break;
1479                                                 case CharSet.Auto:
1480                                                         attrs &= ~TypeAttributes.UnicodeClass;
1481                                                         attrs |= TypeAttributes.AutoClass;
1482                                                         break;
1483                                                 default:
1484                                                         break; // error out...
1485                                                 }
1486                                                 break;
1487                                         case "Pack":
1488                                                 packing_size = (PackingSize)value;
1489                                                 break;
1490                                         case "Size":
1491                                                 class_size = value;
1492                                                 break;
1493                                         default:
1494                                                 break; // error out...
1495                                         }
1496                                 }
1497                                 return;
1498                         } else if (attrname == "System.Runtime.CompilerServices.SpecialNameAttribute") {
1499                                 attrs |= TypeAttributes.SpecialName;
1500                                 return;
1501                         } else if (attrname == "System.SerializableAttribute") {
1502                                 attrs |= TypeAttributes.Serializable;
1503                                 return;
1504                         } else if (attrname == "System.Runtime.InteropServices.ComImportAttribute") {
1505                                 attrs |= TypeAttributes.Import;
1506                                 return;
1507                         } else if (attrname == "System.Security.SuppressUnmanagedCodeSecurityAttribute") {
1508                                 attrs |= TypeAttributes.HasSecurity;
1509                         }
1510
1511                         if (cattrs != null) {
1512                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
1513                                 cattrs.CopyTo (new_array, 0);
1514                                 new_array [cattrs.Length] = customBuilder;
1515                                 cattrs = new_array;
1516                         } else {
1517                                 cattrs = new CustomAttributeBuilder [1];
1518                                 cattrs [0] = customBuilder;
1519                         }
1520                 }
1521
1522                 [ComVisible (true)]
1523                 public void SetCustomAttribute (ConstructorInfo con, byte[] binaryAttribute)
1524                 {
1525                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
1526                 }
1527
1528                 public EventBuilder DefineEvent (string name, EventAttributes attributes, Type eventtype)
1529                 {
1530                         check_name ("name", name);
1531                         if (eventtype == null)
1532                                 throw new ArgumentNullException ("type");
1533                         check_not_created ();
1534
1535                         EventBuilder res = new EventBuilder (this, name, attributes, eventtype);
1536                         if (events != null) {
1537                                 EventBuilder[] new_events = new EventBuilder [events.Length+1];
1538                                 System.Array.Copy (events, new_events, events.Length);
1539                                 new_events [events.Length] = res;
1540                                 events = new_events;
1541                         } else {
1542                                 events = new EventBuilder [1];
1543                                 events [0] = res;
1544                         }
1545                         return res;
1546                 }
1547
1548                 public FieldBuilder DefineInitializedData (string name, byte[] data, FieldAttributes attributes) {
1549                         if (data == null)
1550                                 throw new ArgumentNullException ("data");
1551
1552                         FieldBuilder res = DefineUninitializedData (name, data.Length, attributes);
1553                         res.SetRVAData (data);
1554                         return res;
1555                 }
1556
1557                 public FieldBuilder DefineUninitializedData (string name, int size, FieldAttributes attributes)
1558                 {
1559                         if (name == null)
1560                                 throw new ArgumentNullException ("name");
1561                         if (name.Length == 0)
1562                                 throw new ArgumentException ("Empty name is not legal", "name");
1563                         if ((size <= 0) || (size > 0x3f0000))
1564                                 throw new ArgumentException ("Data size must be > 0 and < 0x3f0000");
1565                         check_not_created ();
1566
1567                         string typeName = "$ArrayType$" + size;
1568                         Type datablobtype = pmodule.GetRegisteredType (fullname + "+" + typeName);
1569                         if (datablobtype == null) {
1570                                 TypeBuilder tb = DefineNestedType (typeName,
1571                                         TypeAttributes.NestedPrivate|TypeAttributes.ExplicitLayout|TypeAttributes.Sealed,
1572                                         pmodule.assemblyb.corlib_value_type, null, PackingSize.Size1, size);
1573                                 tb.CreateType ();
1574                                 datablobtype = tb;
1575                         }
1576                         return DefineField (name, datablobtype, attributes|FieldAttributes.Static|FieldAttributes.HasFieldRVA);
1577                 }
1578
1579                 public TypeToken TypeToken {
1580                         get {
1581                                 return new TypeToken (0x02000000 | table_idx);
1582                         }
1583                 }
1584
1585                 public void SetParent (Type parent)
1586                 {
1587                         check_not_created ();
1588
1589                         if (parent == null) {
1590                                 if ((attrs & TypeAttributes.Interface) != 0) {
1591                                         if ((attrs & TypeAttributes.Abstract) == 0)
1592                                                 throw new InvalidOperationException ("Interface must be declared abstract.");
1593                                         this.parent = null;
1594                                 } else {
1595                                         this.parent = typeof (object);
1596                                 }
1597                         } else {
1598                                 this.parent = parent;
1599                         }
1600
1601                         // will just set the parent-related bits if called a second time
1602                         setup_internal_class (this);
1603                 }
1604
1605                 internal int get_next_table_index (object obj, int table, bool inc) {
1606                         return pmodule.get_next_table_index (obj, table, inc);
1607                 }
1608
1609                 [ComVisible (true)]
1610                 public override InterfaceMapping GetInterfaceMap (Type interfaceType)
1611                 {
1612                         if (created == null)
1613                                 throw new NotSupportedException ("This method is not implemented for incomplete types.");
1614
1615                         return created.GetInterfaceMap (interfaceType);
1616                 }
1617
1618                 internal override Type InternalResolve ()
1619                 {
1620                         check_created ();
1621                         return created;
1622                 }
1623
1624                 internal bool is_created {
1625                         get {
1626                                 return createTypeCalled;
1627                         }
1628                 }
1629
1630                 private Exception not_supported ()
1631                 {
1632                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
1633                 }
1634
1635                 private void check_not_created ()
1636                 {
1637                         if (is_created)
1638                                 throw new InvalidOperationException ("Unable to change after type has been created.");
1639                 }
1640
1641                 private void check_created ()
1642                 {
1643                         if (!is_created)
1644                                 throw not_supported ();
1645                 }
1646
1647                 private void check_name (string argName, string name)
1648                 {
1649                         if (name == null)
1650                                 throw new ArgumentNullException (argName);
1651                         if (name.Length == 0)
1652                                 throw new ArgumentException ("Empty name is not legal", argName);
1653                         if (name [0] == ((char)0))
1654                                 throw new ArgumentException ("Illegal name", argName);
1655                 }
1656
1657                 public override String ToString ()
1658                 {
1659                         return FullName;
1660                 }
1661
1662                 [MonoTODO]
1663                 public override bool IsAssignableFrom (Type c)
1664                 {
1665                         return base.IsAssignableFrom (c);
1666                 }
1667
1668                 [MonoTODO ("arrays")]
1669                 internal bool IsAssignableTo (Type c)
1670                 {
1671                         if (c == this)
1672                                 return true;
1673
1674                         if (c.IsInterface) {
1675                                 if (parent != null && is_created) {
1676                                         if (c.IsAssignableFrom (parent))
1677                                                 return true;
1678                                 }
1679
1680                                 if (interfaces == null)
1681                                         return false;
1682                                 foreach (Type t in interfaces)
1683                                         if (c.IsAssignableFrom (t))
1684                                                 return true;
1685                                 if (!is_created)
1686                                         return false;
1687                         }
1688
1689                         if (parent == null)
1690                                 return c == typeof (object);
1691                         else
1692                                 return c.IsAssignableFrom (parent);
1693                 }
1694
1695                 public bool IsCreated ()
1696                 {
1697                         return is_created;
1698                 }
1699
1700                 public override Type[] GetGenericArguments ()
1701                 {
1702                         if (generic_params == null)
1703                                 return null;
1704                         Type[] args = new Type [generic_params.Length];
1705                         generic_params.CopyTo (args, 0);
1706                         return args;
1707                 }
1708
1709                 public override Type GetGenericTypeDefinition ()
1710                 {
1711                         if (generic_params == null)
1712                                 throw new InvalidOperationException ("Type is not generic");
1713                         return this;
1714                 }
1715
1716                 public override bool ContainsGenericParameters {
1717                         get {
1718                                 return generic_params != null;
1719                         }
1720                 }
1721
1722                 public extern override bool IsGenericParameter {
1723                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1724                         get;
1725                 }
1726
1727                 public override GenericParameterAttributes GenericParameterAttributes {
1728                         get { return GenericParameterAttributes.None; }
1729                 }
1730
1731                 public override bool IsGenericTypeDefinition {
1732                         get {
1733                                 return generic_params != null;
1734                         }
1735                 }
1736
1737                 public override bool IsGenericType {
1738                         get { return IsGenericTypeDefinition; }
1739                 }
1740
1741                 [MonoTODO]
1742                 public override int GenericParameterPosition {
1743                         get {
1744                                 return 0;
1745                         }
1746                 }
1747
1748                 public override MethodBase DeclaringMethod {
1749                         get {
1750                                 return null;
1751                         }
1752                 }
1753
1754                 public GenericTypeParameterBuilder[] DefineGenericParameters (params string[] names)
1755                 {
1756                         if (names == null)
1757                                 throw new ArgumentNullException ("names");
1758                         if (names.Length == 0)
1759                                 throw new ArgumentException ("names");
1760
1761                         setup_generic_class ();
1762
1763                         generic_params = new GenericTypeParameterBuilder [names.Length];
1764                         for (int i = 0; i < names.Length; i++) {
1765                                 string item = names [i];
1766                                 if (item == null)
1767                                         throw new ArgumentNullException ("names");
1768                                 generic_params [i] = new GenericTypeParameterBuilder (this, null, item, i);
1769                         }
1770
1771                         return generic_params;
1772                 }
1773
1774                 public static ConstructorInfo GetConstructor (Type type, ConstructorInfo constructor)
1775                 {
1776                         /*FIXME I would expect the same checks of GetMethod here*/
1777                         if (type == null)
1778                                 throw new ArgumentException ("Type is not generic", "type");
1779
1780                         if (!type.IsGenericType)
1781                                 throw new ArgumentException ("Type is not a generic type", "type");
1782
1783                         if (type.IsGenericTypeDefinition)
1784                                 throw new ArgumentException ("Type cannot be a generic type definition", "type");
1785
1786                         if (constructor == null)
1787                                 throw new NullReferenceException (); //MS raises this instead of an ArgumentNullException
1788
1789                         if (!constructor.DeclaringType.IsGenericTypeDefinition)
1790                                 throw new ArgumentException ("constructor declaring type is not a generic type definition", "constructor");
1791                         if (constructor.DeclaringType != type.GetGenericTypeDefinition ())
1792                                 throw new ArgumentException ("constructor declaring type is not the generic type definition of type", "constructor");
1793
1794                         ConstructorInfo res = type.GetConstructor (constructor);
1795                         if (res == null)
1796                                 throw new ArgumentException ("constructor not found");
1797
1798                         return res;
1799                 }
1800
1801                 static bool IsValidGetMethodType (Type type)
1802                 {
1803                         if (type is TypeBuilder || type is MonoGenericClass)
1804                                 return true;
1805                         /*GetMethod() must work with TypeBuilders after CreateType() was called.*/
1806                         if (type.Module is ModuleBuilder)
1807                                 return true;
1808                         if (type.IsGenericParameter)
1809                                 return false;
1810
1811                         Type[] inst = type.GetGenericArguments ();
1812                         if (inst == null)
1813                                 return false;
1814                         for (int i = 0; i < inst.Length; ++i) {
1815                                 if (IsValidGetMethodType (inst [i]))
1816                                         return true;
1817                         }
1818                         return false;
1819                 }
1820
1821                 public static MethodInfo GetMethod (Type type, MethodInfo method)
1822                 {
1823                         if (!IsValidGetMethodType (type))
1824                                 throw new ArgumentException ("type is not TypeBuilder but " + type.GetType (), "type");
1825
1826                         if (type is TypeBuilder && type.ContainsGenericParameters)
1827                                 type = type.MakeGenericType (type.GetGenericArguments ());
1828
1829                         if (!type.IsGenericType)
1830                                 throw new ArgumentException ("type is not a generic type", "type");
1831
1832                         if (!method.DeclaringType.IsGenericTypeDefinition)
1833                                 throw new ArgumentException ("method declaring type is not a generic type definition", "method");
1834                         if (method.DeclaringType != type.GetGenericTypeDefinition ())
1835                                 throw new ArgumentException ("method declaring type is not the generic type definition of type", "method");
1836                         if (method == null)
1837                                 throw new NullReferenceException (); //MS raises this instead of an ArgumentNullException
1838
1839                         MethodInfo res = type.GetMethod (method);
1840                         if (res == null)
1841                                 throw new ArgumentException (String.Format ("method {0} not found in type {1}", method.Name, type));
1842
1843                         return res;
1844                 }
1845
1846                 public static FieldInfo GetField (Type type, FieldInfo field)
1847                 {
1848                         if (!type.IsGenericType)
1849                                 throw new ArgumentException ("Type is not a generic type", "type");
1850
1851                         if (type.IsGenericTypeDefinition)
1852                                 throw new ArgumentException ("Type cannot be a generic type definition", "type");
1853
1854                         if (field is FieldOnTypeBuilderInst)
1855                                 throw new ArgumentException ("The specified field must be declared on a generic type definition.", "field");
1856
1857                         if (field.DeclaringType != type.GetGenericTypeDefinition ())
1858                                 throw new ArgumentException ("field declaring type is not the generic type definition of type", "method");
1859
1860                         FieldInfo res = type.GetField (field);
1861                         if (res == null)
1862                                 throw new System.Exception ("field not found");
1863                         else
1864                                 return res;
1865                 }
1866
1867
1868                 void _TypeBuilder.GetIDsOfNames([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
1869                 {
1870                         throw new NotImplementedException ();
1871                 }
1872
1873                 void _TypeBuilder.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
1874                 {
1875                         throw new NotImplementedException ();
1876                 }
1877
1878                 void _TypeBuilder.GetTypeInfoCount (out uint pcTInfo)
1879                 {
1880                         throw new NotImplementedException ();
1881                 }
1882
1883                 void _TypeBuilder.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
1884                 {
1885                         throw new NotImplementedException ();
1886                 }
1887
1888                 internal override bool IsUserType {
1889                         get {
1890                                 return false;
1891                         }
1892                 }
1893
1894                 public override bool IsConstructedGenericType {
1895                         get { return false; }
1896                 }
1897
1898                 public override bool IsAssignableFrom (TypeInfo typeInfo)
1899                 {
1900                         return base.IsAssignableFrom (typeInfo);
1901                 }
1902         }
1903 }
1904 #endif