mcs/class/corlib/System/Type.cs

   1 //
   2 // System.Type.cs
   3 //
   4 // Author:
   5 //   Miguel de Icaza (miguel@ximian.com)
   6 //
   7 // (C) Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.Diagnostics;
  34 using System.Reflection;
  35 using System.Reflection.Emit;
  36 using System.Collections;
  37 using System.Runtime.InteropServices;
  38 using System.Runtime.CompilerServices;
  39 using System.Globalization;
  40
  41 namespace System {
  42
  43         [Serializable]
  44         [ClassInterface (ClassInterfaceType.None)]
  45 #if NET_2_0
  46         [ComVisible (true)]
  47         [ComDefaultInterface (typeof (_Type))]
  48 #endif
  49         public abstract class Type : MemberInfo, IReflect, _Type, _MemberInfo {
  50
  51                 internal RuntimeTypeHandle _impl;
  52
  53                 public static readonly char Delimiter = '.';
  54                 public static readonly Type[] EmptyTypes = {};
  55                 public static readonly MemberFilter FilterAttribute = new MemberFilter (FilterAttribute_impl);
  56                 public static readonly MemberFilter FilterName = new MemberFilter (FilterName_impl);
  57                 public static readonly MemberFilter FilterNameIgnoreCase = new MemberFilter (FilterNameIgnoreCase_impl);
  58                 public static readonly object Missing;
  59
  60                 internal const BindingFlags DefaultBindingFlags =
  61                 BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance;
  62
  63                 /* implementation of the delegates for MemberFilter */
  64                 static bool FilterName_impl (MemberInfo m, object filterCriteria)
  65                 {
  66                         string name = (string) filterCriteria;
  67                 if (name == null || name.Length == 0 )
  68                                 return false; // because m.Name cannot be null or empty
  69
  70                         if (name [name.Length-1] == '*')
  71                                 return string.Compare (name, 0, m.Name, 0, name.Length-1, false, CultureInfo.InvariantCulture) == 0;
  72
  73                 return name.Equals (m.Name);
  74                 }
  75
  76                 static bool FilterNameIgnoreCase_impl (MemberInfo m, object filterCriteria)
  77                 {
  78                         string name = (string) filterCriteria;
  79                 if (name == null || name.Length == 0 )
  80                                 return false; // because m.Name cannot be null or empty
  81
  82                         if (name [name.Length-1] == '*')
  83                                 return string.Compare (name, 0, m.Name, 0, name.Length-1, true, CultureInfo.InvariantCulture) == 0;
  84
  85                         return String.Compare (name, m.Name, true, CultureInfo.InvariantCulture) == 0;
  86                 }
  87
  88                 static bool FilterAttribute_impl (MemberInfo m, object filterCriteria)
  89                 {
  90                         int flags = ((IConvertible)filterCriteria).ToInt32 (null);
  91                         if (m is MethodInfo)
  92                                 return ((int)((MethodInfo)m).Attributes & flags) != 0;
  93                         if (m is FieldInfo)
  94                                 return ((int)((FieldInfo)m).Attributes & flags) != 0;
  95                         if (m is PropertyInfo)
  96                                 return ((int)((PropertyInfo)m).Attributes & flags) != 0;
  97                         if (m is EventInfo)
  98                                 return ((int)((EventInfo)m).Attributes & flags) != 0;
  99                         return false;
 100                 }
 101
 102                 protected Type ()
 103                 {
 104                 }
 105
 106                 /// <summary>
 107                 ///   The assembly where the type is defined.
 108                 /// </summary>
 109                 public abstract Assembly Assembly {
 110                         get;
 111                 }
 112
 113                 /// <summary>
 114                 ///   Gets the fully qualified name for the type including the
 115                 ///   assembly name where the type is defined.
 116                 /// </summary>
 117                 public abstract string AssemblyQualifiedName {
 118                         get;
 119                 }
 120
 121                 /// <summary>
 122                 ///   Returns the Attributes associated with the type.
 123                 /// </summary>
 124                 public TypeAttributes Attributes {
 125                         get {
 126                                 return GetAttributeFlagsImpl ();
 127                         }
 128                 }
 129
 130                 /// <summary>
 131                 ///   Returns the basetype for this type
 132                 /// </summary>
 133                 public abstract Type BaseType {
 134                         get;
 135                 }
 136
 137                 /// <summary>
 138                 ///   Returns the class that declares the member.
 139                 /// </summary>
 140                 public override Type DeclaringType {
 141                         get {
 142                                 return null;
 143                         }
 144                 }
 145
 146                 /// <summary>
 147                 ///
 148                 /// </summary>
 149                 public static Binder DefaultBinder {
 150                         get {
 151                                 return Binder.DefaultBinder;
 152                         }
 153                 }
 154
 155                 /// <summary>
 156                 ///    The full name of the type including its namespace
 157                 /// </summary>
 158                 public abstract string FullName {
 159                         get;
 160                 }
 161
 162                 public abstract Guid GUID {
 163                         get;
 164                 }
 165
 166                 public bool HasElementType {
 167                         get {
 168                                 return HasElementTypeImpl ();
 169                         }
 170                 }
 171
 172                 public bool IsAbstract {
 173                         get {
 174                                 return (Attributes & TypeAttributes.Abstract) != 0;
 175                         }
 176                 }
 177
 178                 public bool IsAnsiClass {
 179                         get {
 180                                 return (Attributes & TypeAttributes.StringFormatMask)
 181                                 == TypeAttributes.AnsiClass;
 182                         }
 183                 }
 184
 185                 public bool IsArray {
 186                         get {
 187                                 return IsArrayImpl ();
 188                         }
 189                 }
 190
 191                 public bool IsAutoClass {
 192                         get {
 193                                 return (Attributes & TypeAttributes.StringFormatMask) == TypeAttributes.AutoClass;
 194                         }
 195                 }
 196
 197                 public bool IsAutoLayout {
 198                         get {
 199                                 return (Attributes & TypeAttributes.LayoutMask) == TypeAttributes.AutoLayout;
 200                         }
 201                 }
 202
 203                 public bool IsByRef {
 204                         get {
 205                                 return IsByRefImpl ();
 206                         }
 207                 }
 208
 209                 public bool IsClass {
 210                         get {
 211                                 if (IsInterface)
 212                                         return false;
 213
 214                                 return !IsSubclassOf (typeof (ValueType));
 215                         }
 216                 }
 217
 218                 public bool IsCOMObject {
 219                         get {
 220                                 return IsCOMObjectImpl ();
 221                         }
 222                 }
 223
 224                 public bool IsContextful {
 225                         get {
 226                                 return IsContextfulImpl ();
 227                         }
 228                 }
 229
 230                 public bool IsEnum {
 231                         get {
 232                                 return IsSubclassOf (typeof (Enum));
 233                         }
 234                 }
 235
 236                 public bool IsExplicitLayout {
 237                         get {
 238                                 return (Attributes & TypeAttributes.LayoutMask) == TypeAttributes.ExplicitLayout;
 239                         }
 240                 }
 241
 242                 public bool IsImport {
 243                         get {
 244                                 return (Attributes & TypeAttributes.Import) != 0;
 245                         }
 246                 }
 247
 248                 public bool IsInterface {
 249                         get {
 250                                 return (Attributes & TypeAttributes.ClassSemanticsMask) == TypeAttributes.Interface;
 251                         }
 252                 }
 253
 254                 public bool IsLayoutSequential {
 255                         get {
 256                                 return (Attributes & TypeAttributes.LayoutMask) == TypeAttributes.SequentialLayout;
 257                         }
 258                 }
 259
 260                 public bool IsMarshalByRef {
 261                         get {
 262                                 return IsMarshalByRefImpl ();
 263                         }
 264                 }
 265
 266                 public bool IsNestedAssembly {
 267                         get {
 268                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedAssembly;
 269                         }
 270                 }
 271
 272                 public bool IsNestedFamANDAssem {
 273                         get {
 274                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamANDAssem;
 275                         }
 276                 }
 277
 278                 public bool IsNestedFamily {
 279                         get {
 280                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamily;
 281                         }
 282                 }
 283
 284                 public bool IsNestedFamORAssem {
 285                         get {
 286                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamORAssem;
 287                         }
 288                 }
 289
 290                 public bool IsNestedPrivate {
 291                         get {
 292                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPrivate;
 293                         }
 294                 }
 295
 296                 public bool IsNestedPublic {
 297                         get {
 298                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPublic;
 299                         }
 300                 }
 301
 302                 public bool IsNotPublic {
 303                         get {
 304                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NotPublic;
 305                         }
 306                 }
 307
 308                 public bool IsPointer {
 309                         get {
 310                                 return IsPointerImpl ();
 311                         }
 312                 }
 313
 314                 public bool IsPrimitive {
 315                         get {
 316                                 return IsPrimitiveImpl ();
 317                         }
 318                 }
 319
 320                 public bool IsPublic {
 321                         get {
 322                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.Public;
 323                         }
 324                 }
 325
 326                 public bool IsSealed {
 327                         get {
 328                                 return (Attributes & TypeAttributes.Sealed) != 0;
 329                         }
 330                 }
 331
 332                 public bool IsSerializable {
 333                         get {
 334                                 if ((Attributes & TypeAttributes.Serializable) != 0)
 335                                         return true;
 336
 337                                 // Enums and delegates are always serializable
 338
 339                                 Type type = UnderlyingSystemType;
 340                                 if (type == null)
 341                                         return false;
 342
 343                                 // Fast check for system types
 344                                 if (type.IsSystemType)
 345                                         return type_is_subtype_of (type, typeof (Enum), false) || type_is_subtype_of (type, typeof (Delegate), false);
 346
 347                                 // User defined types depend on this behavior
 348                                 do {
 349                                         if ((type == typeof (Enum)) || (type == typeof (Delegate)))
 350                                                 return true;
 351
 352                                         type = type.BaseType;
 353                                 } while (type != null);
 354
 355                                 return false;
 356                         }
 357                 }
 358
 359                 public bool IsSpecialName {
 360                         get {
 361                                 return (Attributes & TypeAttributes.SpecialName) != 0;
 362                         }
 363                 }
 364
 365                 public bool IsUnicodeClass {
 366                         get {
 367                                 return (Attributes & TypeAttributes.StringFormatMask) == TypeAttributes.UnicodeClass;
 368                         }
 369                 }
 370
 371                 public bool IsValueType {
 372                         get {
 373                                 return IsValueTypeImpl ();
 374                         }
 375                 }
 376
 377                 public override MemberTypes MemberType {
 378                         get {return MemberTypes.TypeInfo;}
 379                 }
 380
 381 #if NET_2_0 || BOOTSTRAP_NET_2_0
 382                 override
 383 #endif
 384                 public abstract Module Module {get;}
 385
 386                 public abstract string Namespace {get;}
 387
 388                 public override Type ReflectedType {
 389                         get {
 390                                 return null;
 391                         }
 392                 }
 393
 394 #if NET_2_0
 395                 public virtual RuntimeTypeHandle TypeHandle {
 396                         get { return default (RuntimeTypeHandle); }
 397                 }
 398 #else
 399                 public abstract RuntimeTypeHandle TypeHandle {get;}
 400 #endif
 401
 402 #if NET_2_0
 403                 [ComVisible (true)]
 404 #endif
 405                 public ConstructorInfo TypeInitializer {
 406                         get {
 407                                 return GetConstructorImpl (
 408                                         BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static,
 409                                         null,
 410                                         CallingConventions.Any,
 411                                         EmptyTypes,
 412                                         null);
 413                         }
 414                 }
 415
 416                 /*
 417                  * This has NOTHING to do with getting the base type of an enum. Use
 418                  * Enum.GetUnderlyingType () for that.
 419                  */
 420                 public abstract Type UnderlyingSystemType {get;}
 421
 422                 public override bool Equals (object o)
 423                 {
 424                         if (o == null)
 425                                 return false;
 426
 427                         Type cmp = o as Type;
 428                         if (cmp == null)
 429                                 return false;
 430                         return Equals (cmp);
 431                 }
 432
 433                 public bool Equals (Type type) {
 434                         if (type == null)
 435                                 return false;
 436                         return UnderlyingSystemType.EqualsInternal (type.UnderlyingSystemType);
 437                 }
 438
 439                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 440                 internal extern bool EqualsInternal (Type type);
 441
 442                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 443                 private static extern Type internal_from_handle (IntPtr handle);
 444
 445                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 446                 private static extern Type internal_from_name (string name, bool throwOnError, bool ignoreCase);
 447
 448                 public static Type GetType(string typeName)
 449                 {
 450                         if (typeName == null)
 451                                 throw new ArgumentNullException ("typeName");
 452
 453                         return internal_from_name (typeName, false, false);
 454                 }
 455
 456                 public static Type GetType(string typeName, bool throwOnError)
 457                 {
 458                         if (typeName == null)
 459                                 throw new ArgumentNullException ("typeName");
 460
 461                         Type type = internal_from_name (typeName, throwOnError, false);
 462                         if (throwOnError && type == null)
 463                                 throw new TypeLoadException ("Error loading '" + typeName + "'");
 464
 465                         return type;
 466                 }
 467
 468                 public static Type GetType(string typeName, bool throwOnError, bool ignoreCase)
 469                 {
 470                         if (typeName == null)
 471                                 throw new ArgumentNullException ("typeName");
 472
 473                         Type t = internal_from_name (typeName, throwOnError, ignoreCase);
 474                         if (throwOnError && t == null)
 475                                 throw new TypeLoadException ("Error loading '" + typeName + "'");
 476
 477                         return t;
 478                 }
 479
 480                 public static Type[] GetTypeArray (object[] args) {
 481                         if (args == null)
 482                                 throw new ArgumentNullException ("args");
 483
 484                         Type[] ret;
 485                         ret = new Type [args.Length];
 486                         for (int i = 0; i < args.Length; ++i)
 487                                 ret [i] = args[i].GetType ();
 488                         return ret;
 489                 }
 490
 491                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 492                 internal extern static TypeCode GetTypeCodeInternal (Type type);
 493
 494                 public static TypeCode GetTypeCode (Type type) {
 495                         if (type is MonoType)
 496                                 return GetTypeCodeInternal (type);
 497                         if (type == null)
 498                                 /* MS.NET returns this */
 499                                 return TypeCode.Empty;
 500
 501                         type = type.UnderlyingSystemType;
 502
 503                         if (!type.IsSystemType)
 504                                 return TypeCode.Object;
 505                         else
 506                                 return GetTypeCodeInternal (type);
 507                 }
 508
 509                 [MonoTODO("Mono does not support COM")]
 510                 public static Type GetTypeFromCLSID (Guid clsid)
 511                 {
 512                         throw new NotImplementedException ();
 513                 }
 514
 515                 [MonoTODO("Mono does not support COM")]
 516                 public static Type GetTypeFromCLSID (Guid clsid, bool throwOnError)
 517                 {
 518                         throw new NotImplementedException ();
 519                 }
 520
 521                 [MonoTODO("Mono does not support COM")]
 522                 public static Type GetTypeFromCLSID (Guid clsid, string server)
 523                 {
 524                         throw new NotImplementedException ();
 525                 }
 526
 527                 [MonoTODO("Mono does not support COM")]
 528                 public static Type GetTypeFromCLSID (Guid clsid, string server, bool throwOnError)
 529                 {
 530                         throw new NotImplementedException ();
 531                 }
 532
 533                 public static Type GetTypeFromHandle (RuntimeTypeHandle handle)
 534                 {
 535                         if (handle.Value == IntPtr.Zero)
 536                                 // This is not consistent with the other GetXXXFromHandle methods, but
 537                                 // MS.NET seems to do this
 538                                 return null;
 539                         return internal_from_handle (handle.Value);
 540                 }
 541
 542                 [MonoTODO("Mono does not support COM")]
 543                 public static Type GetTypeFromProgID (string progID)
 544                 {
 545                         throw new NotImplementedException ();
 546                 }
 547
 548                 [MonoTODO("Mono does not support COM")]
 549                 public static Type GetTypeFromProgID (string progID, bool throwOnError)
 550                 {
 551                         throw new NotImplementedException ();
 552                 }
 553
 554                 [MonoTODO("Mono does not support COM")]
 555                 public static Type GetTypeFromProgID (string progID, string server)
 556                 {
 557                         throw new NotImplementedException ();
 558                 }
 559
 560                 [MonoTODO("Mono does not support COM")]
 561                 public static Type GetTypeFromProgID (string progID, string server, bool throwOnError)
 562                 {
 563                         throw new NotImplementedException ();
 564                 }
 565
 566                 public static RuntimeTypeHandle GetTypeHandle (object o)
 567                 {
 568                         return o.GetType().TypeHandle;
 569                 }
 570
 571                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 572                 internal static extern bool type_is_subtype_of (Type a, Type b, bool check_interfaces);
 573
 574                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 575                 internal static extern bool type_is_assignable_from (Type a, Type b);
 576
 577                 public new Type GetType ()
 578                 {
 579                         return base.GetType ();
 580                 }
 581
 582 #if NET_2_0
 583                 [ComVisible (true)]
 584 #endif
 585                 public virtual bool IsSubclassOf (Type c)
 586                 {
 587                         if (c == null || c == this)
 588                                 return false;
 589
 590                         // Fast check for system types
 591                         if (IsSystemType)
 592                                 return c.IsSystemType && type_is_subtype_of (this, c, false);
 593
 594                         // User defined types depend on this behavior
 595                         for (Type type = BaseType; type != null; type = type.BaseType)
 596                                 if (type == c)
 597                                         return true;
 598
 599                         return false;
 600                 }
 601
 602                 public virtual Type[] FindInterfaces (TypeFilter filter, object filterCriteria)
 603                 {
 604                         if (filter == null)
 605                                 throw new ArgumentNullException ("filter");
 606
 607                         ArrayList ifaces = new ArrayList ();
 608                         foreach (Type iface in GetInterfaces ()) {
 609                                 if (filter (iface, filterCriteria))
 610                                         ifaces.Add (iface);
 611                         }
 612
 613                         return (Type []) ifaces.ToArray (typeof (Type));
 614                 }
 615
 616                 public Type GetInterface (string name) {
 617                         return GetInterface (name, false);
 618                 }
 619
 620                 public abstract Type GetInterface (string name, bool ignoreCase);
 621
 622                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 623                 internal static extern void GetInterfaceMapData (Type t, Type iface, out MethodInfo[] targets, out MethodInfo[] methods);
 624
 625 #if NET_2_0
 626                 [ComVisible (true)]
 627 #endif
 628                 public virtual InterfaceMapping GetInterfaceMap (Type interfaceType) {
 629                         InterfaceMapping res;
 630                         if (interfaceType == null)
 631                                 throw new ArgumentNullException ("interfaceType");
 632                         if (!interfaceType.IsInterface)
 633                                 throw new ArgumentException (Locale.GetText ("Argument must be an interface."), "interfaceType");
 634                         res.TargetType = this;
 635                         res.InterfaceType = interfaceType;
 636                         GetInterfaceMapData (this, interfaceType, out res.TargetMethods, out res.InterfaceMethods);
 637                         if (res.TargetMethods == null)
 638                                 throw new ArgumentException (Locale.GetText ("Interface not found"), "interfaceType");
 639
 640                         return res;
 641                 }
 642
 643                 public abstract Type[] GetInterfaces ();
 644
 645                 public virtual bool IsAssignableFrom (Type c)
 646                 {
 647                         if (c == null)
 648                                 return false;
 649
 650                         if (Equals (c))
 651                                 return true;
 652
 653                         if (c is TypeBuilder)
 654                                 return ((TypeBuilder)c).IsAssignableTo (this);
 655
 656                         /* Handle user defined type classes */
 657                         if (!IsSystemType) {
 658                                 Type systemType = UnderlyingSystemType;
 659                                 if (!systemType.IsSystemType)
 660                                         return false;
 661                                 return systemType.IsAssignableFrom (c);
 662                         }
 663
 664                         if (!c.IsSystemType) {
 665                                 Type underlyingType = c.UnderlyingSystemType;
 666                                 if (!underlyingType.IsSystemType)
 667                                         return false;
 668                                 return IsAssignableFrom (underlyingType);
 669                         }
 670
 671                         return type_is_assignable_from (this, c);
 672                 }
 673
 674                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 675                 public extern virtual bool IsInstanceOfType (object o);
 676
 677                 public virtual int GetArrayRank ()
 678                 {
 679                         throw new NotSupportedException ();     // according to MSDN
 680                 }
 681
 682                 public abstract Type GetElementType ();
 683
 684                 public EventInfo GetEvent (string name)
 685                 {
 686                         return GetEvent (name, DefaultBindingFlags);
 687                 }
 688
 689                 public abstract EventInfo GetEvent (string name, BindingFlags bindingAttr);
 690
 691                 public virtual EventInfo[] GetEvents ()
 692                 {
 693                         return GetEvents (DefaultBindingFlags);
 694                 }
 695
 696                 public abstract EventInfo[] GetEvents (BindingFlags bindingAttr);
 697
 698                 public FieldInfo GetField( string name)
 699                 {
 700                         return GetField (name, DefaultBindingFlags);
 701                 }
 702
 703                 public abstract FieldInfo GetField( string name, BindingFlags bindingAttr);
 704
 705                 public FieldInfo[] GetFields ()
 706                 {
 707                         return GetFields (DefaultBindingFlags);
 708                 }
 709
 710                 public abstract FieldInfo[] GetFields (BindingFlags bindingAttr);
 711
 712                 public override int GetHashCode()
 713                 {
 714                         return (int)_impl.Value;
 715                 }
 716
 717                 public MemberInfo[] GetMember (string name)
 718                 {
 719                         return GetMember (name, DefaultBindingFlags);
 720                 }
 721
 722                 public virtual MemberInfo[] GetMember (string name, BindingFlags bindingAttr)
 723                 {
 724                         return GetMember (name, MemberTypes.All, bindingAttr);
 725                 }
 726
 727                 public virtual MemberInfo[] GetMember (string name, MemberTypes type, BindingFlags bindingAttr)
 728                 {
 729                         if ((bindingAttr & BindingFlags.IgnoreCase) != 0)
 730                                 return FindMembers (type, bindingAttr, FilterNameIgnoreCase, name);
 731                         else
 732                                 return FindMembers (type, bindingAttr, FilterName, name);
 733                 }
 734
 735                 public MemberInfo[] GetMembers ()
 736                 {
 737                         return GetMembers (DefaultBindingFlags);
 738                 }
 739
 740                 public abstract MemberInfo[] GetMembers (BindingFlags bindingAttr);
 741
 742                 public MethodInfo GetMethod (string name)
 743                 {
 744                         if (name == null)
 745                                 throw new ArgumentNullException ("name");
 746                         return GetMethodImpl (name, DefaultBindingFlags, null, CallingConventions.Any, null, null);
 747                 }
 748
 749                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr)
 750                 {
 751                         if (name == null)
 752                                 throw new ArgumentNullException ("name");
 753
 754                         return GetMethodImpl (name, bindingAttr, null, CallingConventions.Any, null, null);
 755                 }
 756
 757                 public MethodInfo GetMethod (string name, Type[] types)
 758                 {
 759                         return GetMethod (name, DefaultBindingFlags, null, CallingConventions.Any, types, null);
 760                 }
 761
 762                 public MethodInfo GetMethod (string name, Type[] types, ParameterModifier[] modifiers)
 763                 {
 764                         return GetMethod (name, DefaultBindingFlags, null, CallingConventions.Any, types, modifiers);
 765                 }
 766
 767                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder,
 768                                              Type[] types, ParameterModifier[] modifiers)
 769                 {
 770
 771                         return GetMethod (name, bindingAttr, binder, CallingConventions.Any, types, modifiers);
 772                 }
 773
 774                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder,
 775                                              CallingConventions callConvention, Type[] types, ParameterModifier[] modifiers)
 776                 {
 777                         if (name == null)
 778                                 throw new ArgumentNullException ("name");
 779                         if (types == null)
 780                                 throw new ArgumentNullException ("types");
 781
 782                         for (int i = 0; i < types.Length; i++)
 783                                 if (types[i] == null)
 784                                         throw new ArgumentNullException ("types");
 785
 786                         return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
 787                 }
 788
 789                 protected abstract MethodInfo GetMethodImpl (string name, BindingFlags bindingAttr, Binder binder,
 790                                                              CallingConventions callConvention, Type[] types,
 791                                                              ParameterModifier[] modifiers);
 792
 793                 internal MethodInfo GetMethodImplInternal (string name, BindingFlags bindingAttr, Binder binder,
 794                                                                                                                         CallingConventions callConvention, Type[] types,
 795                                                                                                                         ParameterModifier[] modifiers)
 796                 {
 797                         return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
 798                 }
 799
 800                 internal virtual MethodInfo GetMethod (MethodInfo fromNoninstanciated)
 801                 {
 802                         throw new System.InvalidOperationException ("can only be called in generic type");
 803                 }
 804
 805                 internal virtual ConstructorInfo GetConstructor (ConstructorInfo fromNoninstanciated)
 806                 {
 807                         throw new System.InvalidOperationException ("can only be called in generic type");
 808                 }
 809
 810                 internal virtual FieldInfo GetField (FieldInfo fromNoninstanciated)
 811                 {
 812                         throw new System.InvalidOperationException ("can only be called in generic type");
 813                 }
 814
 815
 816                 public MethodInfo[] GetMethods ()
 817                 {
 818                         return GetMethods (DefaultBindingFlags);
 819                 }
 820
 821                 public abstract MethodInfo[] GetMethods (BindingFlags bindingAttr);
 822
 823                 public Type GetNestedType (string name)
 824                 {
 825                         return GetNestedType (name, DefaultBindingFlags);
 826                 }
 827
 828                 public abstract Type GetNestedType (string name, BindingFlags bindingAttr);
 829
 830                 public Type[] GetNestedTypes ()
 831                 {
 832                         return GetNestedTypes (DefaultBindingFlags);
 833                 }
 834
 835                 public abstract Type[] GetNestedTypes (BindingFlags bindingAttr);
 836
 837
 838                 public PropertyInfo[] GetProperties ()
 839                 {
 840                         return GetProperties (DefaultBindingFlags);
 841                 }
 842
 843                 public abstract PropertyInfo[] GetProperties (BindingFlags bindingAttr);
 844
 845
 846                 public PropertyInfo GetProperty (string name)
 847                 {
 848                         if (name == null)
 849                                 throw new ArgumentNullException ("name");
 850
 851                         return GetPropertyImpl (name, DefaultBindingFlags, null, null, null, null);
 852                 }
 853
 854                 public PropertyInfo GetProperty (string name, BindingFlags bindingAttr)
 855                 {
 856                         if (name == null)
 857                                 throw new ArgumentNullException ("name");
 858                         return GetPropertyImpl (name, bindingAttr, null, null, null, null);
 859                 }
 860
 861                 public PropertyInfo GetProperty (string name, Type returnType)
 862                 {
 863                         if (name == null)
 864                                 throw new ArgumentNullException ("name");
 865                         return GetPropertyImpl (name, DefaultBindingFlags, null, returnType, null, null);
 866                 }
 867
 868                 public PropertyInfo GetProperty (string name, Type[] types)
 869                 {
 870                         return GetProperty (name, DefaultBindingFlags, null, null, types, null);
 871                 }
 872
 873                 public PropertyInfo GetProperty (string name, Type returnType, Type[] types)
 874                 {
 875                         return GetProperty (name, DefaultBindingFlags, null, returnType, types, null);
 876                 }
 877
 878                 public PropertyInfo GetProperty( string name, Type returnType, Type[] types, ParameterModifier[] modifiers)
 879                 {
 880                         return GetProperty (name, DefaultBindingFlags, null, returnType, types, modifiers);
 881                 }
 882
 883                 public PropertyInfo GetProperty (string name, BindingFlags bindingAttr, Binder binder, Type returnType,
 884                                                  Type[] types, ParameterModifier[] modifiers)
 885                 {
 886                         if (name == null)
 887                                 throw new ArgumentNullException ("name");
 888                         if (types == null)
 889                                 throw new ArgumentNullException ("types");
 890
 891                         foreach (Type t in types) {
 892                                 if (t == null)
 893                                         throw new ArgumentNullException ("types");
 894                         }
 895
 896                         return GetPropertyImpl (name, bindingAttr, binder, returnType, types, modifiers);
 897                 }
 898
 899                 protected abstract PropertyInfo GetPropertyImpl (string name, BindingFlags bindingAttr, Binder binder,
 900                                                                  Type returnType, Type[] types, ParameterModifier[] modifiers);
 901
 902                 internal PropertyInfo GetPropertyImplInternal (string name, BindingFlags bindingAttr, Binder binder,
 903                                                                                                            Type returnType, Type[] types, ParameterModifier[] modifiers)
 904                 {
 905                         return GetPropertyImpl (name, bindingAttr, binder, returnType, types, modifiers);
 906                 }
 907
 908                 protected abstract ConstructorInfo GetConstructorImpl (BindingFlags bindingAttr,
 909                                                                        Binder binder,
 910                                                                        CallingConventions callConvention,
 911                                                                        Type[] types,
 912                                                                        ParameterModifier[] modifiers);
 913
 914                 protected abstract TypeAttributes GetAttributeFlagsImpl ();
 915                 protected abstract bool HasElementTypeImpl ();
 916                 protected abstract bool IsArrayImpl ();
 917                 protected abstract bool IsByRefImpl ();
 918                 protected abstract bool IsCOMObjectImpl ();
 919                 protected abstract bool IsPointerImpl ();
 920                 protected abstract bool IsPrimitiveImpl ();
 921
 922                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 923                 internal static extern bool IsArrayImpl (Type type);
 924
 925                 protected virtual bool IsValueTypeImpl ()
 926                 {
 927                         if (this == typeof (ValueType) || this == typeof (Enum))
 928                                 return false;
 929
 930                         return IsSubclassOf (typeof (ValueType));
 931                 }
 932
 933                 protected virtual bool IsContextfulImpl ()
 934                 {
 935                         return typeof (ContextBoundObject).IsAssignableFrom (this);
 936                 }
 937
 938                 protected virtual bool IsMarshalByRefImpl ()
 939                 {
 940                         return typeof (MarshalByRefObject).IsAssignableFrom (this);
 941                 }
 942
 943 #if NET_2_0
 944                 [ComVisible (true)]
 945 #endif
 946                 public ConstructorInfo GetConstructor (Type[] types)
 947                 {
 948                         return GetConstructor (BindingFlags.Public|BindingFlags.Instance, null, CallingConventions.Any, types, null);
 949                 }
 950
 951 #if NET_2_0
 952                 [ComVisible (true)]
 953 #endif
 954                 public ConstructorInfo GetConstructor (BindingFlags bindingAttr, Binder binder,
 955                                                        Type[] types, ParameterModifier[] modifiers)
 956                 {
 957                         return GetConstructor (bindingAttr, binder, CallingConventions.Any, types, modifiers);
 958                 }
 959
 960 #if NET_2_0
 961                 [ComVisible (true)]
 962 #endif
 963                 public ConstructorInfo GetConstructor (BindingFlags bindingAttr, Binder binder,
 964                                                        CallingConventions callConvention,
 965                                                        Type[] types, ParameterModifier[] modifiers)
 966                 {
 967                         if (types == null)
 968                                 throw new ArgumentNullException ("types");
 969
 970                         foreach (Type t in types) {
 971                                 if (t == null)
 972                                         throw new ArgumentNullException ("types");
 973                         }
 974
 975                         return GetConstructorImpl (bindingAttr, binder, callConvention, types, modifiers);
 976                 }
 977
 978 #if NET_2_0
 979                 [ComVisible (true)]
 980 #endif
 981                 public ConstructorInfo[] GetConstructors ()
 982                 {
 983                         return GetConstructors (BindingFlags.Public | BindingFlags.Instance);
 984                 }
 985
 986 #if NET_2_0
 987                 [ComVisible (true)]
 988 #endif
 989                 public abstract ConstructorInfo[] GetConstructors (BindingFlags bindingAttr);
 990
 991                 public virtual MemberInfo[] GetDefaultMembers ()
 992                 {
 993                         object [] att = GetCustomAttributes (typeof (DefaultMemberAttribute), true);
 994                         if (att.Length == 0)
 995                                 return new MemberInfo [0];
 996
 997                         MemberInfo [] member = GetMember (((DefaultMemberAttribute) att [0]).MemberName);
 998                         return (member != null) ? member : new MemberInfo [0];
 999                 }
1000
1001                 public virtual MemberInfo[] FindMembers (MemberTypes memberType, BindingFlags bindingAttr,
1002                                                          MemberFilter filter, object filterCriteria)
1003                 {
1004                         MemberInfo[] result;
1005                         ArrayList l = new ArrayList ();
1006
1007                         // Console.WriteLine ("FindMembers for {0} (Type: {1}): {2}",
1008                         // this.FullName, this.GetType().FullName, this.obj_address());
1009
1010                         if ((memberType & MemberTypes.Constructor) != 0) {
1011                                 ConstructorInfo[] c = GetConstructors (bindingAttr);
1012                                 if (filter != null) {
1013                                         foreach (MemberInfo m in c) {
1014                                                 if (filter (m, filterCriteria))
1015                                                         l.Add (m);
1016                                         }
1017                                 } else {
1018                                         l.AddRange (c);
1019                                 }
1020                         }
1021                         if ((memberType & MemberTypes.Event) != 0) {
1022                                 EventInfo[] c = GetEvents (bindingAttr);
1023                                 if (filter != null) {
1024                                         foreach (MemberInfo m in c) {
1025                                                 if (filter (m, filterCriteria))
1026                                                         l.Add (m);
1027                                         }
1028                                 } else {
1029                                         l.AddRange (c);
1030                                 }
1031                         }
1032                         if ((memberType & MemberTypes.Field) != 0) {
1033                                 FieldInfo[] c = GetFields (bindingAttr);
1034                                 if (filter != null) {
1035                                         foreach (MemberInfo m in c) {
1036                                                 if (filter (m, filterCriteria))
1037                                                         l.Add (m);
1038                                         }
1039                                 } else {
1040                                         l.AddRange (c);
1041                                 }
1042                         }
1043                         if ((memberType & MemberTypes.Method) != 0) {
1044                                 MethodInfo[] c = GetMethods (bindingAttr);
1045                                 if (filter != null) {
1046                                         foreach (MemberInfo m in c) {
1047                                                 if (filter (m, filterCriteria))
1048                                                         l.Add (m);
1049                                         }
1050                                 } else {
1051                                         l.AddRange (c);
1052                                 }
1053                         }
1054                         if ((memberType & MemberTypes.Property) != 0) {
1055                                 PropertyInfo[] c;
1056                                 int count = l.Count;
1057                                 Type ptype;
1058                                 if (filter != null) {
1059                                         ptype = this;
1060                                         while ((l.Count == count) && (ptype != null)) {
1061                                                 c = ptype.GetProperties (bindingAttr);
1062                                                 foreach (MemberInfo m in c) {
1063                                                         if (filter (m, filterCriteria))
1064                                                                 l.Add (m);
1065                                                 }
1066                                                 ptype = ptype.BaseType;
1067                                         }
1068                                 } else {
1069                                         c = GetProperties (bindingAttr);
1070                                         l.AddRange (c);
1071                                 }
1072                         }
1073                         if ((memberType & MemberTypes.NestedType) != 0) {
1074                                 Type[] c = GetNestedTypes (bindingAttr);
1075                                 if (filter != null) {
1076                                         foreach (MemberInfo m in c) {
1077                                                 if (filter (m, filterCriteria)) {
1078                                                         l.Add (m);
1079                                                 }
1080                                         }
1081                                 } else {
1082                                         l.AddRange (c);
1083                                 }
1084                         }
1085                         result = new MemberInfo [l.Count];
1086                         l.CopyTo (result);
1087                         return result;
1088                 }
1089
1090                 [DebuggerHidden]
1091                 [DebuggerStepThrough]
1092                 public object InvokeMember (string name, BindingFlags invokeAttr, Binder binder, object target, object[] args)
1093                 {
1094                         return InvokeMember (name, invokeAttr, binder, target, args, null, null, null);
1095                 }
1096
1097                 [DebuggerHidden]
1098                 [DebuggerStepThrough]
1099                 public object InvokeMember (string name, BindingFlags invokeAttr, Binder binder,
1100                                             object target, object[] args, CultureInfo culture)
1101                 {
1102                         return InvokeMember (name, invokeAttr, binder, target, args, null, culture, null);
1103                 }
1104
1105                 public abstract object InvokeMember (string name, BindingFlags invokeAttr,
1106                                                      Binder binder, object target, object[] args,
1107                                                      ParameterModifier[] modifiers,
1108                                                      CultureInfo culture, string[] namedParameters);
1109
1110                 public override string ToString()
1111                 {
1112                         return FullName;
1113                 }
1114
1115                 internal bool IsSystemType {
1116                         get {
1117                                 return _impl.Value != IntPtr.Zero;
1118                         }
1119                 }
1120
1121 #if NET_2_0 || BOOTSTRAP_NET_2_0
1122                 public virtual Type[] GetGenericArguments ()
1123                 {
1124                         throw new NotSupportedException ();
1125                 }
1126
1127                 public virtual bool ContainsGenericParameters {
1128                         get { return false; }
1129                 }
1130
1131                 public virtual extern bool IsGenericTypeDefinition {
1132                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1133                         get;
1134                 }
1135
1136                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1137                 extern Type GetGenericTypeDefinition_impl ();
1138
1139                 public virtual Type GetGenericTypeDefinition ()
1140                 {
1141                         Type res = GetGenericTypeDefinition_impl ();
1142                         if (res == null)
1143                                 throw new InvalidOperationException ();
1144
1145                         return res;
1146                 }
1147
1148                 public virtual extern bool IsGenericType {
1149                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1150                         get;
1151                 }
1152
1153                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1154                 static extern Type MakeGenericType (Type gt, Type [] types);
1155
1156                 public virtual Type MakeGenericType (params Type[] types)
1157                 {
1158                         if (!IsGenericTypeDefinition)
1159                                 throw new InvalidOperationException ("not a generic type definition");
1160                         if (types == null)
1161                                 throw new ArgumentNullException ("types");
1162                         if (GetGenericArguments().Length != types.Length)
1163                                 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.", GetGenericArguments ().Length, types.Length), "types");
1164
1165                         Type[] systemTypes = new Type[types.Length];
1166                         for (int i = 0; i < types.Length; ++i) {
1167                                 Type t = types [i];
1168                                 if (t == null)
1169                                         throw new ArgumentNullException ("types");
1170
1171                                 t = t.UnderlyingSystemType;
1172                                 if (t == null || !t.IsSystemType)
1173                                         throw new ArgumentNullException ("types");
1174                                 systemTypes [i] = types [i].UnderlyingSystemType;
1175                         }
1176
1177                         Type res = MakeGenericType (this, systemTypes);
1178                         if (res == null)
1179                                 throw new TypeLoadException ();
1180                         return res;
1181                 }
1182
1183                 public virtual bool IsGenericParameter {
1184                         get {
1185                                 return false;
1186                         }
1187                 }
1188
1189                 public bool IsNested {
1190                         get {
1191                                 return DeclaringType != null;
1192                         }
1193                 }
1194
1195                 public bool IsVisible {
1196                         get {
1197                                 if (IsNestedPublic)
1198                                         return DeclaringType.IsVisible;
1199
1200                                 return IsPublic;
1201                         }
1202                 }
1203
1204                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1205                 extern int GetGenericParameterPosition ();
1206
1207                 public virtual int GenericParameterPosition {
1208                         get {
1209                                 int res = GetGenericParameterPosition ();
1210                                 if (res < 0)
1211                                         throw new InvalidOperationException ();
1212                                 return res;
1213                         }
1214                 }
1215
1216                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1217                 extern GenericParameterAttributes GetGenericParameterAttributes ();
1218
1219                 public virtual GenericParameterAttributes GenericParameterAttributes {
1220                         get {
1221                                 if (!IsGenericParameter)
1222                                         throw new InvalidOperationException ();
1223
1224                                 return GetGenericParameterAttributes ();
1225                         }
1226                 }
1227
1228                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1229                 extern Type[] GetGenericParameterConstraints_impl ();
1230
1231                 public virtual Type[] GetGenericParameterConstraints ()
1232                 {
1233                         if (!IsGenericParameter)
1234                                 throw new InvalidOperationException ();
1235
1236                         return GetGenericParameterConstraints_impl ();
1237                 }
1238
1239                 public virtual MethodBase DeclaringMethod {
1240                         get {
1241                                 return null;
1242                         }
1243                 }
1244
1245                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1246                 extern Type make_array_type (int rank);
1247
1248                 public virtual Type MakeArrayType ()
1249                 {
1250                         return MakeArrayType (1);
1251                 }
1252
1253                 public virtual Type MakeArrayType (int rank)
1254                 {
1255                         if (rank < 1)
1256                                 throw new IndexOutOfRangeException ();
1257                         return make_array_type (rank);
1258                 }
1259
1260                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1261                 extern Type make_byref_type ();
1262
1263                 public virtual Type MakeByRefType ()
1264                 {
1265                         return make_byref_type ();
1266                 }
1267
1268                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1269                 public extern virtual Type MakePointerType ();
1270
1271                 public static Type ReflectionOnlyGetType (string typeName,
1272                                                           bool throwIfNotFound,
1273                                                           bool ignoreCase)
1274                 {
1275                         if (typeName == null)
1276                                 throw new ArgumentNullException ("typeName");
1277                         int idx = typeName.IndexOf (',');
1278                         if (idx < 0 || idx == 0 || idx == typeName.Length - 1)
1279                                 throw new ArgumentException ("Assembly qualifed type name is required", "typeName");
1280                         string an = typeName.Substring (idx + 1);
1281                         Assembly a;
1282                         try {
1283                                 a = Assembly.ReflectionOnlyLoad (an);
1284                         } catch {
1285                                 if (throwIfNotFound)
1286                                         throw;
1287                                 return null;
1288                         }
1289                         return a.GetType (typeName.Substring (0, idx), throwIfNotFound, ignoreCase);
1290                 }
1291
1292                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1293                 extern void GetPacking (out int packing, out int size);
1294
1295                 public virtual StructLayoutAttribute StructLayoutAttribute {
1296                         get {
1297                                 LayoutKind kind;
1298
1299                                 if (IsLayoutSequential)
1300                                         kind = LayoutKind.Sequential;
1301                                 else if (IsExplicitLayout)
1302                                         kind = LayoutKind.Explicit;
1303                                 else
1304                                         kind = LayoutKind.Auto;
1305
1306                                 StructLayoutAttribute attr = new StructLayoutAttribute (kind);
1307
1308                                 if (IsUnicodeClass)
1309                                         attr.CharSet = CharSet.Unicode;
1310                                 else if (IsAnsiClass)
1311                                         attr.CharSet = CharSet.Ansi;
1312                                 else
1313                                         attr.CharSet = CharSet.Auto;
1314
1315                                 if (kind != LayoutKind.Auto)
1316                                         GetPacking (out attr.Pack, out attr.Size);
1317
1318                                 return attr;
1319                         }
1320                 }
1321
1322                 internal object[] GetPseudoCustomAttributes ()
1323                 {
1324                         int count = 0;
1325
1326                         /* IsSerializable returns true for delegates/enums as well */
1327                         if ((Attributes & TypeAttributes.Serializable) != 0)
1328                                 count ++;
1329                         if ((Attributes & TypeAttributes.Import) != 0)
1330                                 count ++;
1331
1332                         if (count == 0)
1333                                 return null;
1334                         object[] attrs = new object [count];
1335                         count = 0;
1336
1337                         if ((Attributes & TypeAttributes.Serializable) != 0)
1338                                 attrs [count ++] = new SerializableAttribute ();
1339                         if ((Attributes & TypeAttributes.Import) != 0)
1340                                 attrs [count ++] = new ComImportAttribute ();
1341
1342                         return attrs;
1343                 }
1344
1345 #endif
1346
1347                 void _Type.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
1348                 {
1349                         throw new NotImplementedException ();
1350                 }
1351
1352                 void _Type.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
1353                 {
1354                         throw new NotImplementedException ();
1355                 }
1356
1357                 void _Type.GetTypeInfoCount (out uint pcTInfo)
1358                 {
1359                         throw new NotImplementedException ();
1360                 }
1361
1362                 void _Type.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
1363                 {
1364                         throw new NotImplementedException ();
1365                 }
1366         }
1367 }