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