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                 public abstract Type UnderlyingSystemType {get;}
 417
 418                 public override bool Equals (object o)
 419                 {
 420                         if (o == null)
 421                                 return false;
 422
 423                         Type cmp = o as Type;
 424                         if (cmp == null)
 425                                 return false;
 426                         return Equals (cmp);
 427                 }
 428
 429                 public bool Equals (Type type) {
 430                         if (type == null)
 431                                 return false;
 432                         return UnderlyingSystemType.EqualsInternal (type.UnderlyingSystemType);
 433                 }
 434
 435                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 436                 internal extern bool EqualsInternal (Type type);
 437
 438                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 439                 private static extern Type internal_from_handle (IntPtr handle);
 440
 441                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 442                 private static extern Type internal_from_name (string name, bool throwOnError, bool ignoreCase);
 443
 444                 public static Type GetType(string typeName)
 445                 {
 446                         if (typeName == null)
 447                                 throw new ArgumentNullException ("typeName");
 448
 449                         return internal_from_name (typeName, false, false);
 450                 }
 451
 452                 public static Type GetType(string typeName, bool throwOnError)
 453                 {
 454                         if (typeName == null)
 455                                 throw new ArgumentNullException ("typeName");
 456
 457                         Type type = internal_from_name (typeName, throwOnError, false);
 458                         if (throwOnError && type == null)
 459                                 throw new TypeLoadException ("Error loading '" + typeName + "'");
 460
 461                         return type;
 462                 }
 463
 464                 public static Type GetType(string typeName, bool throwOnError, bool ignoreCase)
 465                 {
 466                         if (typeName == null)
 467                                 throw new ArgumentNullException ("typeName");
 468
 469                         Type t = internal_from_name (typeName, throwOnError, ignoreCase);
 470                         if (throwOnError && t == null)
 471                                 throw new TypeLoadException ("Error loading '" + typeName + "'");
 472
 473                         return t;
 474                 }
 475
 476                 public static Type[] GetTypeArray (object[] args) {
 477                         if (args == null)
 478                                 throw new ArgumentNullException ("args");
 479
 480                         Type[] ret;
 481                         ret = new Type [args.Length];
 482                         for (int i = 0; i < args.Length; ++i)
 483                                 ret [i] = args[i].GetType ();
 484                         return ret;
 485                 }
 486
 487                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 488                 internal extern static TypeCode GetTypeCodeInternal (Type type);
 489
 490                 public static TypeCode GetTypeCode (Type type) {
 491                         if (type is MonoType)
 492                                 return GetTypeCodeInternal (type);
 493                         if (type == null)
 494                                 /* MS.NET returns this */
 495                                 return TypeCode.Empty;
 496
 497                         type = type.UnderlyingSystemType;
 498
 499                         if (!type.IsSystemType)
 500                                 return TypeCode.Object;
 501                         else
 502                                 return GetTypeCodeInternal (type);
 503                 }
 504
 505                 [MonoTODO("Mono does not support COM")]
 506                 public static Type GetTypeFromCLSID (Guid clsid)
 507                 {
 508                         throw new NotImplementedException ();
 509                 }
 510
 511                 [MonoTODO("Mono does not support COM")]
 512                 public static Type GetTypeFromCLSID (Guid clsid, bool throwOnError)
 513                 {
 514                         throw new NotImplementedException ();
 515                 }
 516
 517                 [MonoTODO("Mono does not support COM")]
 518                 public static Type GetTypeFromCLSID (Guid clsid, string server)
 519                 {
 520                         throw new NotImplementedException ();
 521                 }
 522
 523                 [MonoTODO("Mono does not support COM")]
 524                 public static Type GetTypeFromCLSID (Guid clsid, string server, bool throwOnError)
 525                 {
 526                         throw new NotImplementedException ();
 527                 }
 528
 529                 public static Type GetTypeFromHandle (RuntimeTypeHandle handle)
 530                 {
 531                         return internal_from_handle (handle.Value);
 532                 }
 533
 534                 [MonoTODO("Mono does not support COM")]
 535                 public static Type GetTypeFromProgID (string progID)
 536                 {
 537                         throw new NotImplementedException ();
 538                 }
 539
 540                 [MonoTODO("Mono does not support COM")]
 541                 public static Type GetTypeFromProgID (string progID, bool throwOnError)
 542                 {
 543                         throw new NotImplementedException ();
 544                 }
 545
 546                 [MonoTODO("Mono does not support COM")]
 547                 public static Type GetTypeFromProgID (string progID, string server)
 548                 {
 549                         throw new NotImplementedException ();
 550                 }
 551
 552                 [MonoTODO("Mono does not support COM")]
 553                 public static Type GetTypeFromProgID (string progID, string server, bool throwOnError)
 554                 {
 555                         throw new NotImplementedException ();
 556                 }
 557
 558                 public static RuntimeTypeHandle GetTypeHandle (object o)
 559                 {
 560                         return o.GetType().TypeHandle;
 561                 }
 562
 563                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 564                 internal static extern bool type_is_subtype_of (Type a, Type b, bool check_interfaces);
 565
 566                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 567                 internal static extern bool type_is_assignable_from (Type a, Type b);
 568
 569                 public new Type GetType ()
 570                 {
 571                         return base.GetType ();
 572                 }
 573
 574 #if NET_2_0
 575                 [ComVisible (true)]
 576 #endif
 577                 public virtual bool IsSubclassOf (Type c)
 578                 {
 579                         if (c == null || c == this)
 580                                 return false;
 581
 582                         // Fast check for system types
 583                         if (IsSystemType)
 584                                 return c.IsSystemType && type_is_subtype_of (this, c, false);
 585
 586                         // User defined types depend on this behavior
 587                         for (Type type = BaseType; type != null; type = type.BaseType)
 588                                 if (type == c)
 589                                         return true;
 590
 591                         return false;
 592                 }
 593
 594                 public virtual Type[] FindInterfaces (TypeFilter filter, object filterCriteria)
 595                 {
 596                         if (filter == null)
 597                                 throw new ArgumentNullException ("filter");
 598
 599                         ArrayList ifaces = new ArrayList ();
 600                         foreach (Type iface in GetInterfaces ()) {
 601                                 if (filter (iface, filterCriteria))
 602                                         ifaces.Add (iface);
 603                         }
 604
 605                         return (Type []) ifaces.ToArray (typeof (Type));
 606                 }
 607
 608                 public Type GetInterface (string name) {
 609                         return GetInterface (name, false);
 610                 }
 611
 612                 public abstract Type GetInterface (string name, bool ignoreCase);
 613
 614                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 615                 internal static extern void GetInterfaceMapData (Type t, Type iface, out MethodInfo[] targets, out MethodInfo[] methods);
 616
 617 #if NET_2_0
 618                 [ComVisible (true)]
 619 #endif
 620                 public virtual InterfaceMapping GetInterfaceMap (Type interfaceType) {
 621                         InterfaceMapping res;
 622                         if (interfaceType == null)
 623                                 throw new ArgumentNullException ("interfaceType");
 624                         if (!interfaceType.IsInterface)
 625                                 throw new ArgumentException (Locale.GetText ("Argument must be an interface."), "interfaceType");
 626                         res.TargetType = this;
 627                         res.InterfaceType = interfaceType;
 628                         GetInterfaceMapData (this, interfaceType, out res.TargetMethods, out res.InterfaceMethods);
 629                         if (res.TargetMethods == null)
 630                                 throw new ArgumentException (Locale.GetText ("Interface not found"), "interfaceType");
 631
 632                         return res;
 633                 }
 634
 635                 public abstract Type[] GetInterfaces ();
 636
 637                 public virtual bool IsAssignableFrom (Type c)
 638                 {
 639                         if (c == null)
 640                                 return false;
 641
 642                         if (Equals (c))
 643                                 return true;
 644
 645                         if (c is TypeBuilder)
 646                                 return ((TypeBuilder)c).IsAssignableTo (this);
 647
 648                         /* Handle user defined type classes */
 649                         if (!IsSystemType) {
 650                                 Type systemType = UnderlyingSystemType;
 651                                 if (!systemType.IsSystemType)
 652                                         return false;
 653                                 return systemType.IsAssignableFrom (c);
 654                         }
 655
 656                         if (!c.IsSystemType) {
 657                                 Type underlyingType = c.UnderlyingSystemType;
 658                                 if (!underlyingType.IsSystemType)
 659                                         return false;
 660                                 return IsAssignableFrom (underlyingType);
 661                         }
 662
 663                         return type_is_assignable_from (this, c);
 664                 }
 665
 666                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 667                 public extern virtual bool IsInstanceOfType (object o);
 668
 669                 public virtual int GetArrayRank ()
 670                 {
 671                         throw new NotSupportedException ();     // according to MSDN
 672                 }
 673
 674                 public abstract Type GetElementType ();
 675
 676                 public EventInfo GetEvent (string name)
 677                 {
 678                         return GetEvent (name, DefaultBindingFlags);
 679                 }
 680
 681                 public abstract EventInfo GetEvent (string name, BindingFlags bindingAttr);
 682
 683                 public virtual EventInfo[] GetEvents ()
 684                 {
 685                         return GetEvents (DefaultBindingFlags);
 686                 }
 687
 688                 public abstract EventInfo[] GetEvents (BindingFlags bindingAttr);
 689
 690                 public FieldInfo GetField( string name)
 691                 {
 692                         return GetField (name, DefaultBindingFlags);
 693                 }
 694
 695                 public abstract FieldInfo GetField( string name, BindingFlags bindingAttr);
 696
 697                 public FieldInfo[] GetFields ()
 698                 {
 699                         return GetFields (DefaultBindingFlags);
 700                 }
 701
 702                 public abstract FieldInfo[] GetFields (BindingFlags bindingAttr);
 703
 704                 public override int GetHashCode()
 705                 {
 706                         return (int)_impl.Value;
 707                 }
 708
 709                 public MemberInfo[] GetMember (string name)
 710                 {
 711                         return GetMember (name, DefaultBindingFlags);
 712                 }
 713
 714                 public virtual MemberInfo[] GetMember (string name, BindingFlags bindingAttr)
 715                 {
 716                         return GetMember (name, MemberTypes.All, bindingAttr);
 717                 }
 718
 719                 public virtual MemberInfo[] GetMember (string name, MemberTypes type, BindingFlags bindingAttr)
 720                 {
 721                         if ((bindingAttr & BindingFlags.IgnoreCase) != 0)
 722                                 return FindMembers (type, bindingAttr, FilterNameIgnoreCase, name);
 723                         else
 724                                 return FindMembers (type, bindingAttr, FilterName, name);
 725                 }
 726
 727                 public MemberInfo[] GetMembers ()
 728                 {
 729                         return GetMembers (DefaultBindingFlags);
 730                 }
 731
 732                 public abstract MemberInfo[] GetMembers (BindingFlags bindingAttr);
 733
 734                 public MethodInfo GetMethod (string name)
 735                 {
 736                         if (name == null)
 737                                 throw new ArgumentNullException ("name");
 738                         return GetMethodImpl (name, DefaultBindingFlags, null, CallingConventions.Any, null, null);
 739                 }
 740
 741                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr)
 742                 {
 743                         if (name == null)
 744                                 throw new ArgumentNullException ("name");
 745
 746                         return GetMethodImpl (name, bindingAttr, null, CallingConventions.Any, null, null);
 747                 }
 748
 749                 public MethodInfo GetMethod (string name, Type[] types)
 750                 {
 751                         return GetMethod (name, DefaultBindingFlags, null, CallingConventions.Any, types, null);
 752                 }
 753
 754                 public MethodInfo GetMethod (string name, Type[] types, ParameterModifier[] modifiers)
 755                 {
 756                         return GetMethod (name, DefaultBindingFlags, null, CallingConventions.Any, types, modifiers);
 757                 }
 758
 759                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder,
 760                                              Type[] types, ParameterModifier[] modifiers)
 761                 {
 762
 763                         return GetMethod (name, bindingAttr, binder, CallingConventions.Any, types, modifiers);
 764                 }
 765
 766                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder,
 767                                              CallingConventions callConvention, Type[] types, ParameterModifier[] modifiers)
 768                 {
 769                         if (name == null)
 770                                 throw new ArgumentNullException ("name");
 771                         if (types == null)
 772                                 throw new ArgumentNullException ("types");
 773
 774                         for (int i = 0; i < types.Length; i++)
 775                                 if (types[i] == null)
 776                                         throw new ArgumentNullException ("types");
 777
 778                         return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
 779                 }
 780
 781                 protected abstract MethodInfo GetMethodImpl (string name, BindingFlags bindingAttr, Binder binder,
 782                                                              CallingConventions callConvention, Type[] types,
 783                                                              ParameterModifier[] modifiers);
 784
 785                 internal MethodInfo GetMethodImplInternal (string name, BindingFlags bindingAttr, Binder binder,
 786                                                                                                                         CallingConventions callConvention, Type[] types,
 787                                                                                                                         ParameterModifier[] modifiers)
 788                 {
 789                         return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
 790                 }
 791
 792                 internal virtual MethodInfo GetMethod (MethodInfo fromNoninstanciated)
 793                 {
 794                         throw new System.InvalidOperationException ("can only be called in generic type");
 795                 }
 796
 797                 internal virtual ConstructorInfo GetConstructor (ConstructorInfo fromNoninstanciated)
 798                 {
 799                         throw new System.InvalidOperationException ("can only be called in generic type");
 800                 }
 801
 802                 internal virtual FieldInfo GetField (FieldInfo fromNoninstanciated)
 803                 {
 804                         throw new System.InvalidOperationException ("can only be called in generic type");
 805                 }
 806
 807
 808                 public MethodInfo[] GetMethods ()
 809                 {
 810                         return GetMethods (DefaultBindingFlags);
 811                 }
 812
 813                 public abstract MethodInfo[] GetMethods (BindingFlags bindingAttr);
 814
 815                 public Type GetNestedType (string name)
 816                 {
 817                         return GetNestedType (name, DefaultBindingFlags);
 818                 }
 819
 820                 public abstract Type GetNestedType (string name, BindingFlags bindingAttr);
 821
 822                 public Type[] GetNestedTypes ()
 823                 {
 824                         return GetNestedTypes (DefaultBindingFlags);
 825                 }
 826
 827                 public abstract Type[] GetNestedTypes (BindingFlags bindingAttr);
 828
 829
 830                 public PropertyInfo[] GetProperties ()
 831                 {
 832                         return GetProperties (DefaultBindingFlags);
 833                 }
 834
 835                 public abstract PropertyInfo[] GetProperties (BindingFlags bindingAttr);
 836
 837
 838                 public PropertyInfo GetProperty (string name)
 839                 {
 840                         if (name == null)
 841                                 throw new ArgumentNullException ("name");
 842
 843                         return GetPropertyImpl (name, DefaultBindingFlags, null, null, null, null);
 844                 }
 845
 846                 public PropertyInfo GetProperty (string name, BindingFlags bindingAttr)
 847                 {
 848                         if (name == null)
 849                                 throw new ArgumentNullException ("name");
 850                         return GetPropertyImpl (name, bindingAttr, null, null, null, null);
 851                 }
 852
 853                 public PropertyInfo GetProperty (string name, Type returnType)
 854                 {
 855                         if (name == null)
 856                                 throw new ArgumentNullException ("name");
 857                         return GetPropertyImpl (name, DefaultBindingFlags, null, returnType, null, null);
 858                 }
 859
 860                 public PropertyInfo GetProperty (string name, Type[] types)
 861                 {
 862                         return GetProperty (name, DefaultBindingFlags, null, null, types, null);
 863                 }
 864
 865                 public PropertyInfo GetProperty (string name, Type returnType, Type[] types)
 866                 {
 867                         return GetProperty (name, DefaultBindingFlags, null, returnType, types, null);
 868                 }
 869
 870                 public PropertyInfo GetProperty( string name, Type returnType, Type[] types, ParameterModifier[] modifiers)
 871                 {
 872                         return GetProperty (name, DefaultBindingFlags, null, returnType, types, modifiers);
 873                 }
 874
 875                 public PropertyInfo GetProperty (string name, BindingFlags bindingAttr, Binder binder, Type returnType,
 876                                                  Type[] types, ParameterModifier[] modifiers)
 877                 {
 878                         if (name == null)
 879                                 throw new ArgumentNullException ("name");
 880                         if (types == null)
 881                                 throw new ArgumentNullException ("types");
 882
 883                         foreach (Type t in types) {
 884                                 if (t == null)
 885                                         throw new ArgumentNullException ("types");
 886                         }
 887
 888                         return GetPropertyImpl (name, bindingAttr, binder, returnType, types, modifiers);
 889                 }
 890
 891                 protected abstract PropertyInfo GetPropertyImpl (string name, BindingFlags bindingAttr, Binder binder,
 892                                                                  Type returnType, Type[] types, ParameterModifier[] modifiers);
 893
 894                 internal PropertyInfo GetPropertyImplInternal (string name, BindingFlags bindingAttr, Binder binder,
 895                                                                                                            Type returnType, Type[] types, ParameterModifier[] modifiers)
 896                 {
 897                         return GetPropertyImpl (name, bindingAttr, binder, returnType, types, modifiers);
 898                 }
 899
 900                 protected abstract ConstructorInfo GetConstructorImpl (BindingFlags bindingAttr,
 901                                                                        Binder binder,
 902                                                                        CallingConventions callConvention,
 903                                                                        Type[] types,
 904                                                                        ParameterModifier[] modifiers);
 905
 906                 protected abstract TypeAttributes GetAttributeFlagsImpl ();
 907                 protected abstract bool HasElementTypeImpl ();
 908                 protected abstract bool IsArrayImpl ();
 909                 protected abstract bool IsByRefImpl ();
 910                 protected abstract bool IsCOMObjectImpl ();
 911                 protected abstract bool IsPointerImpl ();
 912                 protected abstract bool IsPrimitiveImpl ();
 913
 914                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 915                 internal static extern bool IsArrayImpl (Type type);
 916
 917                 protected virtual bool IsValueTypeImpl ()
 918                 {
 919                         if (this == typeof (ValueType) || this == typeof (Enum))
 920                                 return false;
 921
 922                         return IsSubclassOf (typeof (ValueType));
 923                 }
 924
 925                 protected virtual bool IsContextfulImpl ()
 926                 {
 927                         return typeof (ContextBoundObject).IsAssignableFrom (this);
 928                 }
 929
 930                 protected virtual bool IsMarshalByRefImpl ()
 931                 {
 932                         return typeof (MarshalByRefObject).IsAssignableFrom (this);
 933                 }
 934
 935 #if NET_2_0
 936                 [ComVisible (true)]
 937 #endif
 938                 public ConstructorInfo GetConstructor (Type[] types)
 939                 {
 940                         return GetConstructor (BindingFlags.Public|BindingFlags.Instance, null, CallingConventions.Any, types, null);
 941                 }
 942
 943 #if NET_2_0
 944                 [ComVisible (true)]
 945 #endif
 946                 public ConstructorInfo GetConstructor (BindingFlags bindingAttr, Binder binder,
 947                                                        Type[] types, ParameterModifier[] modifiers)
 948                 {
 949                         return GetConstructor (bindingAttr, binder, CallingConventions.Any, types, modifiers);
 950                 }
 951
 952 #if NET_2_0
 953                 [ComVisible (true)]
 954 #endif
 955                 public ConstructorInfo GetConstructor (BindingFlags bindingAttr, Binder binder,
 956                                                        CallingConventions callConvention,
 957                                                        Type[] types, ParameterModifier[] modifiers)
 958                 {
 959                         if (types == null)
 960                                 throw new ArgumentNullException ("types");
 961
 962                         foreach (Type t in types) {
 963                                 if (t == null)
 964                                         throw new ArgumentNullException ("types");
 965                         }
 966
 967                         return GetConstructorImpl (bindingAttr, binder, callConvention, types, modifiers);
 968                 }
 969
 970 #if NET_2_0
 971                 [ComVisible (true)]
 972 #endif
 973                 public ConstructorInfo[] GetConstructors ()
 974                 {
 975                         return GetConstructors (BindingFlags.Public | BindingFlags.Instance);
 976                 }
 977
 978 #if NET_2_0
 979                 [ComVisible (true)]
 980 #endif
 981                 public abstract ConstructorInfo[] GetConstructors (BindingFlags bindingAttr);
 982
 983                 public virtual MemberInfo[] GetDefaultMembers ()
 984                 {
 985                         object [] att = GetCustomAttributes (typeof (DefaultMemberAttribute), true);
 986                         if (att.Length == 0)
 987                                 return new MemberInfo [0];
 988
 989                         MemberInfo [] member = GetMember (((DefaultMemberAttribute) att [0]).MemberName);
 990                         return (member != null) ? member : new MemberInfo [0];
 991                 }
 992
 993                 public virtual MemberInfo[] FindMembers (MemberTypes memberType, BindingFlags bindingAttr,
 994                                                          MemberFilter filter, object filterCriteria)
 995                 {
 996                         MemberInfo[] result;
 997                         ArrayList l = new ArrayList ();
 998
 999                         // Console.WriteLine ("FindMembers for {0} (Type: {1}): {2}",
1000                         // this.FullName, this.GetType().FullName, this.obj_address());
1001
1002                         if ((memberType & MemberTypes.Constructor) != 0) {
1003                                 ConstructorInfo[] c = GetConstructors (bindingAttr);
1004                                 if (filter != null) {
1005                                         foreach (MemberInfo m in c) {
1006                                                 if (filter (m, filterCriteria))
1007                                                         l.Add (m);
1008                                         }
1009                                 } else {
1010                                         l.AddRange (c);
1011                                 }
1012                         }
1013                         if ((memberType & MemberTypes.Event) != 0) {
1014                                 EventInfo[] c = GetEvents (bindingAttr);
1015                                 if (filter != null) {
1016                                         foreach (MemberInfo m in c) {
1017                                                 if (filter (m, filterCriteria))
1018                                                         l.Add (m);
1019                                         }
1020                                 } else {
1021                                         l.AddRange (c);
1022                                 }
1023                         }
1024                         if ((memberType & MemberTypes.Field) != 0) {
1025                                 FieldInfo[] c = GetFields (bindingAttr);
1026                                 if (filter != null) {
1027                                         foreach (MemberInfo m in c) {
1028                                                 if (filter (m, filterCriteria))
1029                                                         l.Add (m);
1030                                         }
1031                                 } else {
1032                                         l.AddRange (c);
1033                                 }
1034                         }
1035                         if ((memberType & MemberTypes.Method) != 0) {
1036                                 MethodInfo[] c = GetMethods (bindingAttr);
1037                                 if (filter != null) {
1038                                         foreach (MemberInfo m in c) {
1039                                                 if (filter (m, filterCriteria))
1040                                                         l.Add (m);
1041                                         }
1042                                 } else {
1043                                         l.AddRange (c);
1044                                 }
1045                         }
1046                         if ((memberType & MemberTypes.Property) != 0) {
1047                                 PropertyInfo[] c;
1048                                 int count = l.Count;
1049                                 Type ptype;
1050                                 if (filter != null) {
1051                                         ptype = this;
1052                                         while ((l.Count == count) && (ptype != null)) {
1053                                                 c = ptype.GetProperties (bindingAttr);
1054                                                 foreach (MemberInfo m in c) {
1055                                                         if (filter (m, filterCriteria))
1056                                                                 l.Add (m);
1057                                                 }
1058                                                 ptype = ptype.BaseType;
1059                                         }
1060                                 } else {
1061                                         c = GetProperties (bindingAttr);
1062                                         l.AddRange (c);
1063                                 }
1064                         }
1065                         if ((memberType & MemberTypes.NestedType) != 0) {
1066                                 Type[] c = GetNestedTypes (bindingAttr);
1067                                 if (filter != null) {
1068                                         foreach (MemberInfo m in c) {
1069                                                 if (filter (m, filterCriteria)) {
1070                                                         l.Add (m);
1071                                                 }
1072                                         }
1073                                 } else {
1074                                         l.AddRange (c);
1075                                 }
1076                         }
1077                         result = new MemberInfo [l.Count];
1078                         l.CopyTo (result);
1079                         return result;
1080                 }
1081
1082                 [DebuggerHidden]
1083                 [DebuggerStepThrough]
1084                 public object InvokeMember (string name, BindingFlags invokeAttr, Binder binder, object target, object[] args)
1085                 {
1086                         return InvokeMember (name, invokeAttr, binder, target, args, null, null, null);
1087                 }
1088
1089                 [DebuggerHidden]
1090                 [DebuggerStepThrough]
1091                 public object InvokeMember (string name, BindingFlags invokeAttr, Binder binder,
1092                                             object target, object[] args, CultureInfo culture)
1093                 {
1094                         return InvokeMember (name, invokeAttr, binder, target, args, null, culture, null);
1095                 }
1096
1097                 public abstract object InvokeMember (string name, BindingFlags invokeAttr,
1098                                                      Binder binder, object target, object[] args,
1099                                                      ParameterModifier[] modifiers,
1100                                                      CultureInfo culture, string[] namedParameters);
1101
1102                 public override string ToString()
1103                 {
1104                         return FullName;
1105                 }
1106
1107                 internal bool IsSystemType {
1108                         get {
1109                                 return _impl.Value != IntPtr.Zero;
1110                         }
1111                 }
1112
1113 #if NET_2_0 || BOOTSTRAP_NET_2_0
1114                 public virtual Type[] GetGenericArguments ()
1115                 {
1116                         throw new NotSupportedException ();
1117                 }
1118
1119                 public virtual bool ContainsGenericParameters {
1120                         get { return false; }
1121                 }
1122
1123                 public virtual extern bool IsGenericTypeDefinition {
1124                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1125                         get;
1126                 }
1127
1128                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1129                 extern Type GetGenericTypeDefinition_impl ();
1130
1131                 public virtual Type GetGenericTypeDefinition ()
1132                 {
1133                         Type res = GetGenericTypeDefinition_impl ();
1134                         if (res == null)
1135                                 throw new InvalidOperationException ();
1136
1137                         return res;
1138                 }
1139
1140                 public virtual extern bool IsGenericType {
1141                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1142                         get;
1143                 }
1144
1145                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1146                 static extern Type MakeGenericType (Type gt, Type [] types);
1147
1148                 public virtual Type MakeGenericType (params Type[] types)
1149                 {
1150                         if (!IsGenericTypeDefinition)
1151                                 throw new InvalidOperationException ("not a generic type definition");
1152                         if (types == null)
1153                                 throw new ArgumentNullException ("types");
1154                         if (GetGenericArguments().Length != types.Length)
1155                                 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");
1156
1157                         Type[] systemTypes = new Type[types.Length];
1158                         for (int i = 0; i < types.Length; ++i) {
1159                                 Type t = types [i];
1160                                 if (t == null)
1161                                         throw new ArgumentNullException ("types");
1162
1163                                 t = t.UnderlyingSystemType;
1164                                 if (t == null || !t.IsSystemType)
1165                                         throw new ArgumentNullException ("types");
1166                                 systemTypes [i] = types [i].UnderlyingSystemType;
1167                         }
1168
1169                         Type res = MakeGenericType (this, systemTypes);
1170                         if (res == null)
1171                                 throw new TypeLoadException ();
1172                         return res;
1173                 }
1174
1175                 public virtual bool IsGenericParameter {
1176                         get {
1177                                 return false;
1178                         }
1179                 }
1180
1181                 public bool IsNested {
1182                         get {
1183                                 return DeclaringType != null;
1184                         }
1185                 }
1186
1187                 public bool IsVisible {
1188                         get {
1189                                 if (IsNestedPublic)
1190                                         return DeclaringType.IsVisible;
1191
1192                                 return IsPublic;
1193                         }
1194                 }
1195
1196                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1197                 extern int GetGenericParameterPosition ();
1198
1199                 public virtual int GenericParameterPosition {
1200                         get {
1201                                 int res = GetGenericParameterPosition ();
1202                                 if (res < 0)
1203                                         throw new InvalidOperationException ();
1204                                 return res;
1205                         }
1206                 }
1207
1208                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1209                 extern GenericParameterAttributes GetGenericParameterAttributes ();
1210
1211                 public virtual GenericParameterAttributes GenericParameterAttributes {
1212                         get {
1213                                 if (!IsGenericParameter)
1214                                         throw new InvalidOperationException ();
1215
1216                                 return GetGenericParameterAttributes ();
1217                         }
1218                 }
1219
1220                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1221                 extern Type[] GetGenericParameterConstraints_impl ();
1222
1223                 public virtual Type[] GetGenericParameterConstraints ()
1224                 {
1225                         if (!IsGenericParameter)
1226                                 throw new InvalidOperationException ();
1227
1228                         return GetGenericParameterConstraints_impl ();
1229                 }
1230
1231                 public virtual MethodBase DeclaringMethod {
1232                         get {
1233                                 return null;
1234                         }
1235                 }
1236
1237                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1238                 extern Type make_array_type (int rank);
1239
1240                 public virtual Type MakeArrayType ()
1241                 {
1242                         return MakeArrayType (1);
1243                 }
1244
1245                 public virtual Type MakeArrayType (int rank)
1246                 {
1247                         if (rank < 1)
1248                                 throw new IndexOutOfRangeException ();
1249                         return make_array_type (rank);
1250                 }
1251
1252                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1253                 extern Type make_byref_type ();
1254
1255                 public virtual Type MakeByRefType ()
1256                 {
1257                         return make_byref_type ();
1258                 }
1259
1260                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1261                 public extern virtual Type MakePointerType ();
1262
1263                 public static Type ReflectionOnlyGetType (string typeName,
1264                                                           bool throwIfNotFound,
1265                                                           bool ignoreCase)
1266                 {
1267                         if (typeName == null)
1268                                 throw new ArgumentNullException ("typeName");
1269                         int idx = typeName.IndexOf (',');
1270                         if (idx < 0 || idx == 0 || idx == typeName.Length - 1)
1271                                 throw new ArgumentException ("Assembly qualifed type name is required", "typeName");
1272                         string an = typeName.Substring (idx + 1);
1273                         Assembly a;
1274                         try {
1275                                 a = Assembly.ReflectionOnlyLoad (an);
1276                         } catch {
1277                                 if (throwIfNotFound)
1278                                         throw;
1279                                 return null;
1280                         }
1281                         return a.GetType (typeName.Substring (0, idx), throwIfNotFound, ignoreCase);
1282                 }
1283
1284                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1285                 extern void GetPacking (out int packing, out int size);
1286
1287                 public virtual StructLayoutAttribute StructLayoutAttribute {
1288                         get {
1289                                 LayoutKind kind;
1290
1291                                 if (IsLayoutSequential)
1292                                         kind = LayoutKind.Sequential;
1293                                 else if (IsExplicitLayout)
1294                                         kind = LayoutKind.Explicit;
1295                                 else
1296                                         kind = LayoutKind.Auto;
1297
1298                                 StructLayoutAttribute attr = new StructLayoutAttribute (kind);
1299
1300                                 if (IsUnicodeClass)
1301                                         attr.CharSet = CharSet.Unicode;
1302                                 else if (IsAnsiClass)
1303                                         attr.CharSet = CharSet.Ansi;
1304                                 else
1305                                         attr.CharSet = CharSet.Auto;
1306
1307                                 if (kind != LayoutKind.Auto)
1308                                         GetPacking (out attr.Pack, out attr.Size);
1309
1310                                 return attr;
1311                         }
1312                 }
1313
1314                 internal object[] GetPseudoCustomAttributes ()
1315                 {
1316                         int count = 0;
1317
1318                         /* IsSerializable returns true for delegates/enums as well */
1319                         if ((Attributes & TypeAttributes.Serializable) != 0)
1320                                 count ++;
1321                         if ((Attributes & TypeAttributes.Import) != 0)
1322                                 count ++;
1323
1324                         if (count == 0)
1325                                 return null;
1326                         object[] attrs = new object [count];
1327                         count = 0;
1328
1329                         if ((Attributes & TypeAttributes.Serializable) != 0)
1330                                 attrs [count ++] = new SerializableAttribute ();
1331                         if ((Attributes & TypeAttributes.Import) != 0)
1332                                 attrs [count ++] = new ComImportAttribute ();
1333
1334                         return attrs;
1335                 }
1336
1337 #endif
1338
1339                 void _Type.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
1340                 {
1341                         throw new NotImplementedException ();
1342                 }
1343
1344                 void _Type.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
1345                 {
1346                         throw new NotImplementedException ();
1347                 }
1348
1349                 void _Type.GetTypeInfoCount (out uint pcTInfo)
1350                 {
1351                         throw new NotImplementedException ();
1352                 }
1353
1354                 void _Type.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
1355                 {
1356                         throw new NotImplementedException ();
1357                 }
1358         }
1359 }