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                                 //
 212                                 // This code used to probe for "this == typeof (System.Enum)", but in
 213                                 // The .NET Framework 1.0, the above test return false
 214                                 //
 215                                 if (this == typeof (System.ValueType))
 216                                         return true;
 217                                 if (IsInterface)
 218                                         return false;
 219                                 return !is_subtype_of (this, typeof (System.ValueType), false);
 220                         }
 221                 }
 222
 223                 public bool IsCOMObject {
 224                         get {
 225                                 return IsCOMObjectImpl ();
 226                         }
 227                 }
 228
 229                 public bool IsContextful {
 230                         get {
 231                                 return IsContextfulImpl ();
 232                         }
 233                 }
 234
 235                 public bool IsEnum {
 236                         get {
 237                                 // This hack is needed because EnumBuilder's UnderlyingSystemType returns the enum's basetype
 238                                 if (this is EnumBuilder)
 239                                         return true;
 240
 241                                 return is_subtype_of (this, typeof (System.Enum), false) &&
 242                                         this != typeof (System.Enum);
 243                         }
 244                 }
 245
 246                 public bool IsExplicitLayout {
 247                         get {
 248                                 return (Attributes & TypeAttributes.LayoutMask) == TypeAttributes.ExplicitLayout;
 249                         }
 250                 }
 251
 252                 public bool IsImport {
 253                         get {
 254                                 return (Attributes & TypeAttributes.Import) != 0;
 255                         }
 256                 }
 257
 258                 public bool IsInterface {
 259                         get {
 260                                 return (Attributes & TypeAttributes.ClassSemanticsMask) == TypeAttributes.Interface;
 261                         }
 262                 }
 263
 264                 public bool IsLayoutSequential {
 265                         get {
 266                                 return (Attributes & TypeAttributes.LayoutMask) == TypeAttributes.SequentialLayout;
 267                         }
 268                 }
 269
 270                 public bool IsMarshalByRef {
 271                         get {
 272                                 return IsMarshalByRefImpl ();
 273                         }
 274                 }
 275
 276                 public bool IsNestedAssembly {
 277                         get {
 278                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedAssembly;
 279                         }
 280                 }
 281
 282                 public bool IsNestedFamANDAssem {
 283                         get {
 284                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamANDAssem;
 285                         }
 286                 }
 287
 288                 public bool IsNestedFamily {
 289                         get {
 290                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamily;
 291                         }
 292                 }
 293
 294                 public bool IsNestedFamORAssem {
 295                         get {
 296                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamORAssem;
 297                         }
 298                 }
 299
 300                 public bool IsNestedPrivate {
 301                         get {
 302                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPrivate;
 303                         }
 304                 }
 305
 306                 public bool IsNestedPublic {
 307                         get {
 308                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPublic;
 309                         }
 310                 }
 311
 312                 public bool IsNotPublic {
 313                         get {
 314                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NotPublic;
 315                         }
 316                 }
 317
 318                 public bool IsPointer {
 319                         get {
 320                                 return IsPointerImpl ();
 321                         }
 322                 }
 323
 324                 public bool IsPrimitive {
 325                         get {
 326                                 return IsPrimitiveImpl ();
 327                         }
 328                 }
 329
 330                 public bool IsPublic {
 331                         get {
 332                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.Public;
 333                         }
 334                 }
 335
 336                 public bool IsSealed {
 337                         get {
 338                                 return (Attributes & TypeAttributes.Sealed) != 0;
 339                         }
 340                 }
 341
 342                 public bool IsSerializable {
 343                         get {
 344                                 // Enums and delegates are always serializable
 345                                 return (Attributes & TypeAttributes.Serializable) != 0 || IsEnum ||
 346                                         is_subtype_of (this, typeof (System.Delegate), false);
 347                         }
 348                 }
 349
 350                 public bool IsSpecialName {
 351                         get {
 352                                 return (Attributes & TypeAttributes.SpecialName) != 0;
 353                         }
 354                 }
 355
 356                 public bool IsUnicodeClass {
 357                         get {
 358                                 return (Attributes & TypeAttributes.StringFormatMask) == TypeAttributes.UnicodeClass;
 359                         }
 360                 }
 361
 362                 public bool IsValueType {
 363                         get {
 364                                 return IsValueTypeImpl ();
 365                         }
 366                 }
 367
 368                 public override MemberTypes MemberType {
 369                         get {return MemberTypes.TypeInfo;}
 370                 }
 371
 372 #if NET_2_0 || BOOTSTRAP_NET_2_0
 373                 override
 374 #endif
 375                 public abstract Module Module {get;}
 376
 377                 public abstract string Namespace {get;}
 378
 379                 public override Type ReflectedType {
 380                         get {
 381                                 return null;
 382                         }
 383                 }
 384
 385                 public abstract RuntimeTypeHandle TypeHandle {get;}
 386
 387 #if NET_2_0
 388                 [ComVisible (true)]
 389 #endif
 390                 public ConstructorInfo TypeInitializer {
 391                         get {
 392                                 return GetConstructorImpl (
 393                                         BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static,
 394                                         null,
 395                                         CallingConventions.Any,
 396                                         EmptyTypes,
 397                                         null);
 398                         }
 399                 }
 400
 401                 public abstract Type UnderlyingSystemType {get;}
 402
 403                 public override bool Equals (object o)
 404                 {
 405                         if (o == null)
 406                                 return false;
 407
 408                         // TODO: return UnderlyingSystemType == o.UnderlyingSystemType;
 409                         Type cmp = o as Type;
 410                         if (cmp == null)
 411                                 return false;
 412                         return Equals (cmp);
 413                 }
 414
 415                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 416                 public extern bool Equals (Type type);
 417
 418                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 419                 private static extern Type internal_from_handle (IntPtr handle);
 420
 421                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 422                 private static extern Type internal_from_name (string name, bool throwOnError, bool ignoreCase);
 423
 424                 public static Type GetType(string typeName)
 425                 {
 426                         if (typeName == null)
 427                                 throw new ArgumentNullException ("typeName");
 428
 429                         return internal_from_name (typeName, false, false);
 430                 }
 431
 432                 public static Type GetType(string typeName, bool throwOnError)
 433                 {
 434                         if (typeName == null)
 435                                 throw new ArgumentNullException ("typeName");
 436
 437                         Type type = internal_from_name (typeName, throwOnError, false);
 438                         if (throwOnError && type == null)
 439                                 throw new TypeLoadException ("Error loading '" + typeName + "'");
 440
 441                         return type;
 442                 }
 443
 444                 public static Type GetType(string typeName, bool throwOnError, bool ignoreCase)
 445                 {
 446                         if (typeName == null)
 447                                 throw new ArgumentNullException ("typeName");
 448
 449                         Type t = internal_from_name (typeName, throwOnError, ignoreCase);
 450                         if (throwOnError && t == null)
 451                                 throw new TypeLoadException ("Error loading '" + typeName + "'");
 452
 453                         return t;
 454                 }
 455
 456                 public static Type[] GetTypeArray (object[] args) {
 457                         if (args == null)
 458                                 throw new ArgumentNullException ("args");
 459
 460                         Type[] ret;
 461                         ret = new Type [args.Length];
 462                         for (int i = 0; i < args.Length; ++i)
 463                                 ret [i] = args[i].GetType ();
 464                         return ret;
 465                 }
 466
 467                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 468                 internal extern static TypeCode GetTypeCodeInternal (Type type);
 469
 470                 public static TypeCode GetTypeCode (Type type) {
 471                         if (type == null)
 472                                 /* MS.NET returns this */
 473                                 return TypeCode.Empty;
 474
 475                         type = type.UnderlyingSystemType;
 476
 477                         if (!type.IsSystemType)
 478                                 return Type.GetTypeCode (typeof (object));
 479                         else
 480                                 return GetTypeCodeInternal (type);
 481                 }
 482
 483                 [MonoTODO]
 484                 public static Type GetTypeFromCLSID (Guid clsid)
 485                 {
 486                         throw new NotImplementedException ();
 487                 }
 488
 489                 [MonoTODO]
 490                 public static Type GetTypeFromCLSID (Guid clsid, bool throwOnError)
 491                 {
 492                         throw new NotImplementedException ();
 493                 }
 494
 495                 [MonoTODO]
 496                 public static Type GetTypeFromCLSID (Guid clsid, string server)
 497                 {
 498                         throw new NotImplementedException ();
 499                 }
 500
 501                 [MonoTODO]
 502                 public static Type GetTypeFromCLSID (Guid clsid, string server, bool throwOnError)
 503                 {
 504                         throw new NotImplementedException ();
 505                 }
 506
 507                 public static Type GetTypeFromHandle (RuntimeTypeHandle handle)
 508                 {
 509                         return internal_from_handle (handle.Value);
 510                 }
 511
 512                 [MonoTODO]
 513                 public static Type GetTypeFromProgID (string progID)
 514                 {
 515                         throw new NotImplementedException ();
 516                 }
 517
 518                 [MonoTODO]
 519                 public static Type GetTypeFromProgID (string progID, bool throwOnError)
 520                 {
 521                         throw new NotImplementedException ();
 522                 }
 523
 524                 [MonoTODO]
 525                 public static Type GetTypeFromProgID (string progID, string server)
 526                 {
 527                         throw new NotImplementedException ();
 528                 }
 529
 530                 [MonoTODO]
 531                 public static Type GetTypeFromProgID (string progID, string server, bool throwOnError)
 532                 {
 533                         throw new NotImplementedException ();
 534                 }
 535
 536                 public static RuntimeTypeHandle GetTypeHandle (object o)
 537                 {
 538                         return o.GetType().TypeHandle;
 539                 }
 540
 541                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 542                 internal static extern bool type_is_subtype_of (Type a, Type b, bool check_interfaces);
 543
 544                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 545                 internal static extern bool type_is_assignable_from (Type a, Type b);
 546
 547                 internal static bool is_subtype_of (Type a, Type b, bool check_interfaces)
 548                 {
 549                         a = a.UnderlyingSystemType;
 550                         b = b.UnderlyingSystemType;
 551
 552                         if (!a.IsSystemType || !b.IsSystemType)
 553                                 return false;
 554                         else
 555                                 return type_is_subtype_of (a, b, check_interfaces);
 556                 }
 557
 558                 public new Type GetType ()
 559                 {
 560                         return base.GetType ();
 561                 }
 562
 563 #if NET_2_0
 564                 [ComVisible (true)]
 565 #endif
 566                 public virtual bool IsSubclassOf (Type c)
 567                 {
 568                         if (c == null)
 569                                 return false;
 570
 571                         return (this != c) && is_subtype_of (this, c, false);
 572                 }
 573
 574                 public virtual Type[] FindInterfaces (TypeFilter filter, object filterCriteria)
 575                 {
 576                         if (filter == null)
 577                                 throw new ArgumentNullException ("filter");
 578
 579                         ArrayList ifaces = new ArrayList ();
 580                         foreach (Type iface in GetInterfaces ()) {
 581                                 if (filter (iface, filterCriteria))
 582                                         ifaces.Add (iface);
 583                         }
 584
 585                         return (Type []) ifaces.ToArray (typeof (Type));
 586                 }
 587
 588                 public Type GetInterface (string name) {
 589                         return GetInterface (name, false);
 590                 }
 591
 592                 public abstract Type GetInterface (string name, bool ignoreCase);
 593
 594                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 595                 internal static extern void GetInterfaceMapData (Type t, Type iface, out MethodInfo[] targets, out MethodInfo[] methods);
 596
 597 #if NET_2_0
 598                 [ComVisible (true)]
 599 #endif
 600                 public virtual InterfaceMapping GetInterfaceMap (Type interfaceType) {
 601                         InterfaceMapping res;
 602                         if (interfaceType == null)
 603                                 throw new ArgumentNullException ("interfaceType");
 604                         if (!interfaceType.IsInterface)
 605                                 throw new ArgumentException (Locale.GetText ("Argument must be an interface."), "interfaceType");
 606                         res.TargetType = this;
 607                         res.InterfaceType = interfaceType;
 608                         GetInterfaceMapData (this, interfaceType, out res.TargetMethods, out res.InterfaceMethods);
 609                         if (res.TargetMethods == null)
 610                                 throw new ArgumentException (Locale.GetText ("Interface not found"), "interfaceType");
 611
 612                         return res;
 613                 }
 614
 615                 public abstract Type[] GetInterfaces ();
 616
 617                 public virtual bool IsAssignableFrom (Type c)
 618                 {
 619                         if (c == null)
 620                                 return false;
 621
 622                         if (Equals (c))
 623                                 return true;
 624
 625                         if (c is TypeBuilder)
 626                                 return ((TypeBuilder)c).IsAssignableTo (this);
 627
 628                         /* Handle user defined type classes */
 629                         if (!IsSystemType) {
 630                                 Type systemType = UnderlyingSystemType;
 631                                 if (!systemType.IsSystemType)
 632                                         return false;
 633                                 return systemType.IsAssignableFrom (c);
 634                         }
 635
 636                         if (!c.IsSystemType) {
 637                                 Type underlyingType = c.UnderlyingSystemType;
 638                                 if (!underlyingType.IsSystemType)
 639                                         return false;
 640                                 return IsAssignableFrom (underlyingType);
 641                         }
 642
 643                         return type_is_assignable_from (this, c);
 644                 }
 645
 646                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 647                 public extern virtual bool IsInstanceOfType (object o);
 648
 649                 public virtual int GetArrayRank ()
 650                 {
 651                         throw new NotSupportedException ();     // according to MSDN
 652                 }
 653
 654                 public abstract Type GetElementType ();
 655
 656                 public EventInfo GetEvent (string name)
 657                 {
 658                         return GetEvent (name, DefaultBindingFlags);
 659                 }
 660
 661                 public abstract EventInfo GetEvent (string name, BindingFlags bindingAttr);
 662
 663                 public virtual EventInfo[] GetEvents ()
 664                 {
 665                         return GetEvents (DefaultBindingFlags);
 666                 }
 667
 668                 public abstract EventInfo[] GetEvents (BindingFlags bindingAttr);
 669
 670                 public FieldInfo GetField( string name)
 671                 {
 672                         return GetField (name, DefaultBindingFlags);
 673                 }
 674
 675                 public abstract FieldInfo GetField( string name, BindingFlags bindingAttr);
 676
 677                 public FieldInfo[] GetFields ()
 678                 {
 679                         return GetFields (DefaultBindingFlags);
 680                 }
 681
 682                 public abstract FieldInfo[] GetFields (BindingFlags bindingAttr);
 683
 684                 public override int GetHashCode()
 685                 {
 686                         return (int)_impl.Value;
 687                 }
 688
 689                 public MemberInfo[] GetMember (string name)
 690                 {
 691                         return GetMember (name, DefaultBindingFlags);
 692                 }
 693
 694                 public virtual MemberInfo[] GetMember (string name, BindingFlags bindingAttr)
 695                 {
 696                         return GetMember (name, MemberTypes.All, bindingAttr);
 697                 }
 698
 699                 public virtual MemberInfo[] GetMember (string name, MemberTypes type, BindingFlags bindingAttr)
 700                 {
 701                         if ((bindingAttr & BindingFlags.IgnoreCase) != 0)
 702                                 return FindMembers (type, bindingAttr, FilterNameIgnoreCase, name);
 703                         else
 704                                 return FindMembers (type, bindingAttr, FilterName, name);
 705                 }
 706
 707                 public MemberInfo[] GetMembers ()
 708                 {
 709                         return GetMembers (DefaultBindingFlags);
 710                 }
 711
 712                 public abstract MemberInfo[] GetMembers (BindingFlags bindingAttr);
 713
 714                 public MethodInfo GetMethod (string name)
 715                 {
 716                         if (name == null)
 717                                 throw new ArgumentNullException ("name");
 718                         return GetMethodImpl (name, DefaultBindingFlags, null, CallingConventions.Any, null, null);
 719                 }
 720
 721                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr)
 722                 {
 723                         if (name == null)
 724                                 throw new ArgumentNullException ("name");
 725
 726                         return GetMethodImpl (name, bindingAttr, null, CallingConventions.Any, null, null);
 727                 }
 728
 729                 public MethodInfo GetMethod (string name, Type[] types)
 730                 {
 731                         return GetMethod (name, DefaultBindingFlags, null, CallingConventions.Any, types, null);
 732                 }
 733
 734                 public MethodInfo GetMethod (string name, Type[] types, ParameterModifier[] modifiers)
 735                 {
 736                         return GetMethod (name, DefaultBindingFlags, null, CallingConventions.Any, types, modifiers);
 737                 }
 738
 739                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder,
 740                                              Type[] types, ParameterModifier[] modifiers)
 741                 {
 742
 743                         return GetMethod (name, bindingAttr, binder, CallingConventions.Any, types, modifiers);
 744                 }
 745
 746                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder,
 747                                              CallingConventions callConvention, Type[] types, ParameterModifier[] modifiers)
 748                 {
 749                         if (name == null)
 750                                 throw new ArgumentNullException ("name");
 751                         if (types == null)
 752                                 throw new ArgumentNullException ("types");
 753
 754                         for (int i = 0; i < types.Length; i++)
 755                                 if (types[i] == null)
 756                                         throw new ArgumentNullException ("types");
 757
 758                         return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
 759                 }
 760
 761                 protected abstract MethodInfo GetMethodImpl (string name, BindingFlags bindingAttr, Binder binder,
 762                                                              CallingConventions callConvention, Type[] types,
 763                                                              ParameterModifier[] modifiers);
 764
 765                 internal MethodInfo GetMethodImplInternal (string name, BindingFlags bindingAttr, Binder binder,
 766                                                                                                                         CallingConventions callConvention, Type[] types,
 767                                                                                                                         ParameterModifier[] modifiers)
 768                 {
 769                         return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
 770                 }
 771
 772                 internal virtual MethodInfo GetMethod (MethodInfo fromNoninstanciated)
 773                 {
 774                         throw new System.InvalidOperationException ("can only be called in generic type");
 775                 }
 776
 777                 internal virtual ConstructorInfo GetConstructor (ConstructorInfo fromNoninstanciated)
 778                 {
 779                         throw new System.InvalidOperationException ("can only be called in generic type");
 780                 }
 781
 782                 internal virtual FieldInfo GetField (FieldInfo fromNoninstanciated)
 783                 {
 784                         throw new System.InvalidOperationException ("can only be called in generic type");
 785                 }
 786
 787
 788                 public MethodInfo[] GetMethods ()
 789                 {
 790                         return GetMethods (DefaultBindingFlags);
 791                 }
 792
 793                 public abstract MethodInfo[] GetMethods (BindingFlags bindingAttr);
 794
 795                 public Type GetNestedType (string name)
 796                 {
 797                         return GetNestedType (name, DefaultBindingFlags);
 798                 }
 799
 800                 public abstract Type GetNestedType (string name, BindingFlags bindingAttr);
 801
 802                 public Type[] GetNestedTypes ()
 803                 {
 804                         return GetNestedTypes (DefaultBindingFlags);
 805                 }
 806
 807                 public abstract Type[] GetNestedTypes (BindingFlags bindingAttr);
 808
 809
 810                 public PropertyInfo[] GetProperties ()
 811                 {
 812                         return GetProperties (DefaultBindingFlags);
 813                 }
 814
 815                 public abstract PropertyInfo[] GetProperties (BindingFlags bindingAttr);
 816
 817
 818                 public PropertyInfo GetProperty (string name)
 819                 {
 820                         if (name == null)
 821                                 throw new ArgumentNullException ("name");
 822
 823                         return GetPropertyImpl (name, DefaultBindingFlags, null, null, null, null);
 824                 }
 825
 826                 public PropertyInfo GetProperty (string name, BindingFlags bindingAttr)
 827                 {
 828                         if (name == null)
 829                                 throw new ArgumentNullException ("name");
 830                         return GetPropertyImpl (name, bindingAttr, null, null, null, null);
 831                 }
 832
 833                 public PropertyInfo GetProperty (string name, Type returnType)
 834                 {
 835                         if (name == null)
 836                                 throw new ArgumentNullException ("name");
 837                         return GetPropertyImpl (name, DefaultBindingFlags, null, returnType, null, null);
 838                 }
 839
 840                 public PropertyInfo GetProperty (string name, Type[] types)
 841                 {
 842                         return GetProperty (name, DefaultBindingFlags, null, null, types, null);
 843                 }
 844
 845                 public PropertyInfo GetProperty (string name, Type returnType, Type[] types)
 846                 {
 847                         return GetProperty (name, DefaultBindingFlags, null, returnType, types, null);
 848                 }
 849
 850                 public PropertyInfo GetProperty( string name, Type returnType, Type[] types, ParameterModifier[] modifiers)
 851                 {
 852                         return GetProperty (name, DefaultBindingFlags, null, returnType, types, modifiers);
 853                 }
 854
 855                 public PropertyInfo GetProperty (string name, BindingFlags bindingAttr, Binder binder, Type returnType,
 856                                                  Type[] types, ParameterModifier[] modifiers)
 857                 {
 858                         if (name == null)
 859                                 throw new ArgumentNullException ("name");
 860                         if (types == null)
 861                                 throw new ArgumentNullException ("types");
 862
 863                         return GetPropertyImpl (name, bindingAttr, binder, returnType, types, modifiers);
 864                 }
 865
 866                 protected abstract PropertyInfo GetPropertyImpl (string name, BindingFlags bindingAttr, Binder binder,
 867                                                                  Type returnType, Type[] types, ParameterModifier[] modifiers);
 868
 869                 internal PropertyInfo GetPropertyImplInternal (string name, BindingFlags bindingAttr, Binder binder,
 870                                                                                                            Type returnType, Type[] types, ParameterModifier[] modifiers)
 871                 {
 872                         return GetPropertyImpl (name, bindingAttr, binder, returnType, types, modifiers);
 873                 }
 874
 875                 protected abstract ConstructorInfo GetConstructorImpl (BindingFlags bindingAttr,
 876                                                                        Binder binder,
 877                                                                        CallingConventions callConvention,
 878                                                                        Type[] types,
 879                                                                        ParameterModifier[] modifiers);
 880
 881                 protected abstract TypeAttributes GetAttributeFlagsImpl ();
 882                 protected abstract bool HasElementTypeImpl ();
 883                 protected abstract bool IsArrayImpl ();
 884                 protected abstract bool IsByRefImpl ();
 885                 protected abstract bool IsCOMObjectImpl ();
 886                 protected abstract bool IsPointerImpl ();
 887                 protected abstract bool IsPrimitiveImpl ();
 888
 889                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 890                 internal static extern bool IsArrayImpl (Type type);
 891
 892                 protected virtual bool IsValueTypeImpl ()
 893                 {
 894                         if (this == typeof (Enum) || this == typeof (ValueType))
 895                                 return false;
 896
 897                         return IsSubclassOf (typeof (ValueType));
 898                 }
 899
 900                 protected virtual bool IsContextfulImpl ()
 901                 {
 902                         return typeof (ContextBoundObject).IsAssignableFrom (this);
 903                 }
 904
 905                 protected virtual bool IsMarshalByRefImpl ()
 906                 {
 907                         return typeof (MarshalByRefObject).IsAssignableFrom (this);
 908                 }
 909
 910 #if NET_2_0
 911                 [ComVisible (true)]
 912 #endif
 913                 public ConstructorInfo GetConstructor (Type[] types)
 914                 {
 915                         return GetConstructorImpl (
 916                                 DefaultBindingFlags, null, CallingConventions.Any, types, null);
 917                 }
 918
 919 #if NET_2_0
 920                 [ComVisible (true)]
 921 #endif
 922                 public ConstructorInfo GetConstructor (BindingFlags bindingAttr, Binder binder,
 923                                                        Type[] types, ParameterModifier[] modifiers)
 924                 {
 925                         return GetConstructorImpl (
 926                                 bindingAttr, binder, CallingConventions.Any, types, modifiers);
 927                 }
 928
 929 #if NET_2_0
 930                 [ComVisible (true)]
 931 #endif
 932                 public ConstructorInfo GetConstructor (BindingFlags bindingAttr, Binder binder,
 933                                                        CallingConventions callConvention,
 934                                                        Type[] types, ParameterModifier[] modifiers)
 935                 {
 936                         if (types == null)
 937                                 throw new ArgumentNullException ("types");
 938
 939                         return GetConstructorImpl (bindingAttr, binder, callConvention, types, modifiers);
 940                 }
 941
 942 #if NET_2_0
 943                 [ComVisible (true)]
 944 #endif
 945                 public ConstructorInfo[] GetConstructors ()
 946                 {
 947                         return GetConstructors (BindingFlags.Public | BindingFlags.Instance);
 948                 }
 949
 950 #if NET_2_0
 951                 [ComVisible (true)]
 952 #endif
 953                 public abstract ConstructorInfo[] GetConstructors (BindingFlags bindingAttr);
 954
 955                 public virtual MemberInfo[] GetDefaultMembers ()
 956                 {
 957                         object [] att = GetCustomAttributes (typeof (DefaultMemberAttribute), true);
 958                         if (att.Length == 0)
 959                                 return new MemberInfo [0];
 960
 961                         MemberInfo [] member = GetMember (((DefaultMemberAttribute) att [0]).MemberName);
 962                         return (member != null) ? member : new MemberInfo [0];
 963                 }
 964
 965                 public virtual MemberInfo[] FindMembers (MemberTypes memberType, BindingFlags bindingAttr,
 966                                                          MemberFilter filter, object filterCriteria)
 967                 {
 968                         MemberInfo[] result;
 969                         ArrayList l = new ArrayList ();
 970
 971                         // Console.WriteLine ("FindMembers for {0} (Type: {1}): {2}",
 972                         // this.FullName, this.GetType().FullName, this.obj_address());
 973
 974                         if ((memberType & MemberTypes.Constructor) != 0) {
 975                                 ConstructorInfo[] c = GetConstructors (bindingAttr);
 976                                 if (filter != null) {
 977                                         foreach (MemberInfo m in c) {
 978                                                 if (filter (m, filterCriteria))
 979                                                         l.Add (m);
 980                                         }
 981                                 } else {
 982                                         l.AddRange (c);
 983                                 }
 984                         }
 985                         if ((memberType & MemberTypes.Event) != 0) {
 986                                 EventInfo[] c = GetEvents (bindingAttr);
 987                                 if (filter != null) {
 988                                         foreach (MemberInfo m in c) {
 989                                                 if (filter (m, filterCriteria))
 990                                                         l.Add (m);
 991                                         }
 992                                 } else {
 993                                         l.AddRange (c);
 994                                 }
 995                         }
 996                         if ((memberType & MemberTypes.Field) != 0) {
 997                                 FieldInfo[] c = GetFields (bindingAttr);
 998                                 if (filter != null) {
 999                                         foreach (MemberInfo m in c) {
1000                                                 if (filter (m, filterCriteria))
1001                                                         l.Add (m);
1002                                         }
1003                                 } else {
1004                                         l.AddRange (c);
1005                                 }
1006                         }
1007                         if ((memberType & MemberTypes.Method) != 0) {
1008                                 MethodInfo[] c = GetMethods (bindingAttr);
1009                                 if (filter != null) {
1010                                         foreach (MemberInfo m in c) {
1011                                                 if (filter (m, filterCriteria))
1012                                                         l.Add (m);
1013                                         }
1014                                 } else {
1015                                         l.AddRange (c);
1016                                 }
1017                         }
1018                         if ((memberType & MemberTypes.Property) != 0) {
1019                                 PropertyInfo[] c;
1020                                 int count = l.Count;
1021                                 Type ptype;
1022                                 if (filter != null) {
1023                                         ptype = this;
1024                                         while ((l.Count == count) && (ptype != null)) {
1025                                                 c = ptype.GetProperties (bindingAttr);
1026                                                 foreach (MemberInfo m in c) {
1027                                                         if (filter (m, filterCriteria))
1028                                                                 l.Add (m);
1029                                                 }
1030                                                 ptype = ptype.BaseType;
1031                                         }
1032                                 } else {
1033                                         c = GetProperties (bindingAttr);
1034                                         l.AddRange (c);
1035                                 }
1036                         }
1037                         if ((memberType & MemberTypes.NestedType) != 0) {
1038                                 Type[] c = GetNestedTypes (bindingAttr);
1039                                 if (filter != null) {
1040                                         foreach (MemberInfo m in c) {
1041                                                 if (filter (m, filterCriteria)) {
1042                                                         l.Add (m);
1043                                                 }
1044                                         }
1045                                 } else {
1046                                         l.AddRange (c);
1047                                 }
1048                         }
1049                         result = new MemberInfo [l.Count];
1050                         l.CopyTo (result);
1051                         return result;
1052                 }
1053
1054                 [DebuggerHidden]
1055                 [DebuggerStepThrough]
1056                 public object InvokeMember (string name, BindingFlags invokeAttr, Binder binder, object target, object[] args)
1057                 {
1058                         return InvokeMember (name, invokeAttr, binder, target, args, null, null, null);
1059                 }
1060
1061                 [DebuggerHidden]
1062                 [DebuggerStepThrough]
1063                 public object InvokeMember (string name, BindingFlags invokeAttr, Binder binder,
1064                                             object target, object[] args, CultureInfo culture)
1065                 {
1066                         return InvokeMember (name, invokeAttr, binder, target, args, null, culture, null);
1067                 }
1068
1069                 public abstract object InvokeMember (string name, BindingFlags invokeAttr,
1070                                                      Binder binder, object target, object[] args,
1071                                                      ParameterModifier[] modifiers,
1072                                                      CultureInfo culture, string[] namedParameters);
1073
1074                 public override string ToString()
1075                 {
1076                         return FullName;
1077                 }
1078
1079                 internal bool IsSystemType {
1080                         get {
1081                                 return _impl.Value != IntPtr.Zero;
1082                         }
1083                 }
1084
1085 #if NET_2_0 || BOOTSTRAP_NET_2_0
1086                 public abstract Type[] GetGenericArguments ();
1087
1088                 public abstract bool ContainsGenericParameters {
1089                         get;
1090                 }
1091
1092                 public virtual extern bool IsGenericTypeDefinition {
1093                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1094                         get;
1095                 }
1096
1097                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1098                 extern Type GetGenericTypeDefinition_impl ();
1099
1100                 public virtual Type GetGenericTypeDefinition ()
1101                 {
1102                         Type res = GetGenericTypeDefinition_impl ();
1103                         if (res == null)
1104                                 throw new InvalidOperationException ();
1105
1106                         return res;
1107                 }
1108
1109                 public extern bool IsGenericInstance {
1110                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1111                         get;
1112                 }
1113
1114                 public extern bool IsGenericType {
1115                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1116                         get;
1117                 }
1118
1119                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1120                 static extern Type MakeGenericType (Type gt, Type [] types);
1121
1122                 public virtual Type MakeGenericType (params Type[] types)
1123                 {
1124                         if (types == null)
1125                                 throw new ArgumentNullException ("types");
1126                         foreach (Type t in types) {
1127                                 if (t == null)
1128                                         throw new ArgumentNullException ("types");
1129                         }
1130                         Type res = MakeGenericType (this, types);
1131                         if (res == null)
1132                                 throw new TypeLoadException ();
1133                         return res;
1134                 }
1135
1136                 public abstract bool IsGenericParameter {
1137                         get;
1138                 }
1139
1140                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1141                 extern int GetGenericParameterPosition ();
1142
1143                 public virtual int GenericParameterPosition {
1144                         get {
1145                                 int res = GetGenericParameterPosition ();
1146                                 if (res < 0)
1147                                         throw new InvalidOperationException ();
1148                                 return res;
1149                         }
1150                 }
1151
1152                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1153                 extern GenericParameterAttributes GetGenericParameterAttributes ();
1154
1155                 public virtual GenericParameterAttributes GenericParameterAttributes {
1156                         get {
1157                                 if (!IsGenericParameter)
1158                                         throw new InvalidOperationException ();
1159
1160                                 return GetGenericParameterAttributes ();
1161                         }
1162                 }
1163
1164                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1165                 extern Type[] GetGenericParameterConstraints_impl ();
1166
1167                 public virtual Type[] GetGenericParameterConstraints ()
1168                 {
1169                         if (!IsGenericParameter)
1170                                 throw new InvalidOperationException ();
1171
1172                         return GetGenericParameterConstraints_impl ();
1173                 }
1174
1175                 public abstract MethodInfo DeclaringMethod {
1176                         get;
1177                 }
1178
1179                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1180                 extern Type make_array_type (int rank);
1181
1182                 public virtual Type MakeArrayType ()
1183                 {
1184                         return MakeArrayType (1);
1185                 }
1186
1187                 public virtual Type MakeArrayType (int rank)
1188                 {
1189                         if (rank < 1)
1190                                 throw new IndexOutOfRangeException ();
1191                         return make_array_type (rank);
1192                 }
1193
1194                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1195                 extern Type make_byref_type ();
1196
1197                 public virtual Type MakeByRefType ()
1198                 {
1199                         return make_byref_type ();
1200                 }
1201
1202                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1203                 public extern virtual Type MakePointerType ();
1204
1205                 [MonoTODO]
1206                 public static Type ReflectionOnlyGetType (string typeName,
1207                                                                                                   bool throwIfNotFound,
1208                                                                                                   bool ignoreCase)
1209                 {
1210                         throw new NotImplementedException ();
1211                 }
1212
1213                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1214                 extern void GetPacking (out int packing, out int size);
1215
1216                 public virtual StructLayoutAttribute StructLayoutAttribute {
1217                         get {
1218                                 LayoutKind kind;
1219
1220                                 if (IsLayoutSequential)
1221                                         kind = LayoutKind.Sequential;
1222                                 else if (IsExplicitLayout)
1223                                         kind = LayoutKind.Explicit;
1224                                 else
1225                                         kind = LayoutKind.Auto;
1226
1227                                 StructLayoutAttribute attr = new StructLayoutAttribute (kind);
1228
1229                                 if (IsUnicodeClass)
1230                                         attr.CharSet = CharSet.Unicode;
1231                                 else if (IsAnsiClass)
1232                                         attr.CharSet = CharSet.Ansi;
1233                                 else
1234                                         attr.CharSet = CharSet.Auto;
1235
1236                                 if (kind != LayoutKind.Auto)
1237                                         GetPacking (out attr.Pack, out attr.Size);
1238
1239                                 return attr;
1240                         }
1241                 }
1242
1243                 internal object[] GetPseudoCustomAttributes () {
1244                         int count = 0;
1245
1246                         /* IsSerializable returns true for delegates/enums as well */
1247                         if ((Attributes & TypeAttributes.Serializable) != 0)
1248                                 count ++;
1249
1250                         if (count == 0)
1251                                 return null;
1252                         object[] attrs = new object [count];
1253                         count = 0;
1254
1255                         if ((Attributes & TypeAttributes.Serializable) != 0)
1256                                 attrs [count ++] = new SerializableAttribute ();
1257
1258                         return attrs;
1259                 }
1260
1261 #endif
1262
1263                 void _Type.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
1264                 {
1265                         throw new NotImplementedException ();
1266                 }
1267
1268                 void _Type.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
1269                 {
1270                         throw new NotImplementedException ();
1271                 }
1272
1273                 void _Type.GetTypeInfoCount (out uint pcTInfo)
1274                 {
1275                         throw new NotImplementedException ();
1276                 }
1277
1278                 void _Type.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
1279                 {
1280                         throw new NotImplementedException ();
1281                 }
1282         }
1283 }