mcs/class/corlib/System/Type.cs

   1 //
   2 // System.Type.cs
   3 //
   4 // Author:
   5 //   Miguel de Icaza (miguel@ximian.com)
   6 //
   7 // (C) Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.Diagnostics;
  34 using System.Reflection;
  35 using System.Reflection.Emit;
  36 using System.Collections;
  37 using System.Runtime.InteropServices;
  38 using System.Runtime.CompilerServices;
  39 using System.Globalization;
  40
  41 namespace System {
  42
  43         [Serializable]
  44         [ClassInterface (ClassInterfaceType.None)]
  45 #if NET_2_0
  46         [ComVisible (true)]
  47         [ComDefaultInterface (typeof (_Type))]
  48 #endif
  49         public abstract class Type : MemberInfo, IReflect, _Type, _MemberInfo {
  50
  51                 internal RuntimeTypeHandle _impl;
  52
  53                 public static readonly char Delimiter = '.';
  54                 public static readonly Type[] EmptyTypes = {};
  55                 public static readonly MemberFilter FilterAttribute = new MemberFilter (FilterAttribute_impl);
  56                 public static readonly MemberFilter FilterName = new MemberFilter (FilterName_impl);
  57                 public static readonly MemberFilter FilterNameIgnoreCase = new MemberFilter (FilterNameIgnoreCase_impl);
  58                 public static readonly object Missing;
  59
  60                 internal const BindingFlags DefaultBindingFlags =
  61                 BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance;
  62
  63                 /* implementation of the delegates for MemberFilter */
  64                 static bool FilterName_impl (MemberInfo m, object filterCriteria)
  65                 {
  66                         string name = (string) filterCriteria;
  67                 if (name == null || name.Length == 0 )
  68                                 return false; // because m.Name cannot be null or empty
  69
  70                         if (name [name.Length-1] == '*')
  71                                 return string.Compare (name, 0, m.Name, 0, name.Length-1, false, CultureInfo.InvariantCulture) == 0;
  72
  73                 return name.Equals (m.Name);
  74                 }
  75
  76                 static bool FilterNameIgnoreCase_impl (MemberInfo m, object filterCriteria)
  77                 {
  78                         string name = (string) filterCriteria;
  79                 if (name == null || name.Length == 0 )
  80                                 return false; // because m.Name cannot be null or empty
  81
  82                         if (name [name.Length-1] == '*')
  83                                 return string.Compare (name, 0, m.Name, 0, name.Length-1, true, CultureInfo.InvariantCulture) == 0;
  84
  85                         return String.Compare (name, m.Name, true, CultureInfo.InvariantCulture) == 0;
  86                 }
  87
  88                 static bool FilterAttribute_impl (MemberInfo m, object filterCriteria)
  89                 {
  90                         int flags = ((IConvertible)filterCriteria).ToInt32 (null);
  91                         if (m is MethodInfo)
  92                                 return ((int)((MethodInfo)m).Attributes & flags) != 0;
  93                         if (m is FieldInfo)
  94                                 return ((int)((FieldInfo)m).Attributes & flags) != 0;
  95                         if (m is PropertyInfo)
  96                                 return ((int)((PropertyInfo)m).Attributes & flags) != 0;
  97                         if (m is EventInfo)
  98                                 return ((int)((EventInfo)m).Attributes & flags) != 0;
  99                         return false;
 100                 }
 101
 102                 protected Type ()
 103                 {
 104                 }
 105
 106                 /// <summary>
 107                 ///   The assembly where the type is defined.
 108                 /// </summary>
 109                 public abstract Assembly Assembly {
 110                         get;
 111                 }
 112
 113                 /// <summary>
 114                 ///   Gets the fully qualified name for the type including the
 115                 ///   assembly name where the type is defined.
 116                 /// </summary>
 117                 public abstract string AssemblyQualifiedName {
 118                         get;
 119                 }
 120
 121                 /// <summary>
 122                 ///   Returns the Attributes associated with the type.
 123                 /// </summary>
 124                 public TypeAttributes Attributes {
 125                         get {
 126                                 return GetAttributeFlagsImpl ();
 127                         }
 128                 }
 129
 130                 /// <summary>
 131                 ///   Returns the basetype for this type
 132                 /// </summary>
 133                 public abstract Type BaseType {
 134                         get;
 135                 }
 136
 137                 /// <summary>
 138                 ///   Returns the class that declares the member.
 139                 /// </summary>
 140                 public override Type DeclaringType {
 141                         get {
 142                                 return null;
 143                         }
 144                 }
 145
 146                 /// <summary>
 147                 ///
 148                 /// </summary>
 149                 public static Binder DefaultBinder {
 150                         get {
 151                                 return Binder.DefaultBinder;
 152                         }
 153                 }
 154
 155                 /// <summary>
 156                 ///    The full name of the type including its namespace
 157                 /// </summary>
 158                 public abstract string FullName {
 159                         get;
 160                 }
 161
 162                 public abstract Guid GUID {
 163                         get;
 164                 }
 165
 166                 public bool HasElementType {
 167                         get {
 168                                 return HasElementTypeImpl ();
 169                         }
 170                 }
 171
 172                 public bool IsAbstract {
 173                         get {
 174                                 return (Attributes & TypeAttributes.Abstract) != 0;
 175                         }
 176                 }
 177
 178                 public bool IsAnsiClass {
 179                         get {
 180                                 return (Attributes & TypeAttributes.StringFormatMask)
 181                                 == TypeAttributes.AnsiClass;
 182                         }
 183                 }
 184
 185                 public bool IsArray {
 186                         get {
 187                                 return IsArrayImpl ();
 188                         }
 189                 }
 190
 191                 public bool IsAutoClass {
 192                         get {
 193                                 return (Attributes & TypeAttributes.StringFormatMask) == TypeAttributes.AutoClass;
 194                         }
 195                 }
 196
 197                 public bool IsAutoLayout {
 198                         get {
 199                                 return (Attributes & TypeAttributes.LayoutMask) == TypeAttributes.AutoLayout;
 200                         }
 201                 }
 202
 203                 public bool IsByRef {
 204                         get {
 205                                 return IsByRefImpl ();
 206                         }
 207                 }
 208
 209                 public bool IsClass {
 210                         get {
 211                                 //
 212                                 // This code used to probe for "this == typeof (System.Enum)", but in
 213                                 // The .NET Framework 1.0, the above test return false
 214                                 //
 215                                 if (this == typeof (System.ValueType))
 216                                         return true;
 217                                 if (IsInterface)
 218                                         return false;
 219                                 return !is_subtype_of (this, typeof (System.ValueType), false);
 220                         }
 221                 }
 222
 223                 public bool IsCOMObject {
 224                         get {
 225                                 return IsCOMObjectImpl ();
 226                         }
 227                 }
 228
 229                 public bool IsContextful {
 230                         get {
 231                                 return IsContextfulImpl ();
 232                         }
 233                 }
 234
 235                 public bool IsEnum {
 236                         get {
 237                                 // This hack is needed because EnumBuilder's UnderlyingSystemType returns the enum's basetype
 238                                 if (this is EnumBuilder)
 239                                         return true;
 240
 241                                 return is_subtype_of (this, typeof (System.Enum), false) &&
 242                                         this != typeof (System.Enum);
 243                         }
 244                 }
 245
 246                 public bool IsExplicitLayout {
 247                         get {
 248                                 return (Attributes & TypeAttributes.LayoutMask) == TypeAttributes.ExplicitLayout;
 249                         }
 250                 }
 251
 252                 public bool IsImport {
 253                         get {
 254                                 return (Attributes & TypeAttributes.Import) != 0;
 255                         }
 256                 }
 257
 258                 public bool IsInterface {
 259                         get {
 260                                 return (Attributes & TypeAttributes.ClassSemanticsMask) == TypeAttributes.Interface;
 261                         }
 262                 }
 263
 264                 public bool IsLayoutSequential {
 265                         get {
 266                                 return (Attributes & TypeAttributes.LayoutMask) == TypeAttributes.SequentialLayout;
 267                         }
 268                 }
 269
 270                 public bool IsMarshalByRef {
 271                         get {
 272                                 return IsMarshalByRefImpl ();
 273                         }
 274                 }
 275
 276                 public bool IsNestedAssembly {
 277                         get {
 278                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedAssembly;
 279                         }
 280                 }
 281
 282                 public bool IsNestedFamANDAssem {
 283                         get {
 284                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamANDAssem;
 285                         }
 286                 }
 287
 288                 public bool IsNestedFamily {
 289                         get {
 290                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamily;
 291                         }
 292                 }
 293
 294                 public bool IsNestedFamORAssem {
 295                         get {
 296                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedFamORAssem;
 297                         }
 298                 }
 299
 300                 public bool IsNestedPrivate {
 301                         get {
 302                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPrivate;
 303                         }
 304                 }
 305
 306                 public bool IsNestedPublic {
 307                         get {
 308                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPublic;
 309                         }
 310                 }
 311
 312                 public bool IsNotPublic {
 313                         get {
 314                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NotPublic;
 315                         }
 316                 }
 317
 318                 public bool IsPointer {
 319                         get {
 320                                 return IsPointerImpl ();
 321                         }
 322                 }
 323
 324                 public bool IsPrimitive {
 325                         get {
 326                                 return IsPrimitiveImpl ();
 327                         }
 328                 }
 329
 330                 public bool IsPublic {
 331                         get {
 332                                 return (Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.Public;
 333                         }
 334                 }
 335
 336                 public bool IsSealed {
 337                         get {
 338                                 return (Attributes & TypeAttributes.Sealed) != 0;
 339                         }
 340                 }
 341
 342                 public bool IsSerializable {
 343                         get {
 344                                 // Enums and delegates are always serializable
 345                                 return (Attributes & TypeAttributes.Serializable) != 0 || IsEnum ||
 346                                         is_subtype_of (this, typeof (System.Delegate), false);
 347                         }
 348                 }
 349
 350                 public bool IsSpecialName {
 351                         get {
 352                                 return (Attributes & TypeAttributes.SpecialName) != 0;
 353                         }
 354                 }
 355
 356                 public bool IsUnicodeClass {
 357                         get {
 358                                 return (Attributes & TypeAttributes.StringFormatMask) == TypeAttributes.UnicodeClass;
 359                         }
 360                 }
 361
 362                 public bool IsValueType {
 363                         get {
 364                                 return IsValueTypeImpl ();
 365                         }
 366                 }
 367
 368                 public override MemberTypes MemberType {
 369                         get {return MemberTypes.TypeInfo;}
 370                 }
 371
 372 #if NET_2_0 || BOOTSTRAP_NET_2_0
 373                 override
 374 #endif
 375                 public abstract Module Module {get;}
 376
 377                 public abstract string Namespace {get;}
 378
 379                 public override Type ReflectedType {
 380                         get {
 381                                 return null;
 382                         }
 383                 }
 384
 385                 public abstract RuntimeTypeHandle TypeHandle {get;}
 386
 387 #if NET_2_0
 388                 [ComVisible (true)]
 389 #endif
 390                 public ConstructorInfo TypeInitializer {
 391                         get {
 392                                 return GetConstructorImpl (
 393                                         BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static,
 394                                         null,
 395                                         CallingConventions.Any,
 396                                         EmptyTypes,
 397                                         null);
 398                         }
 399                 }
 400
 401                 public abstract Type UnderlyingSystemType {get;}
 402
 403                 public override bool Equals (object o)
 404                 {
 405                         if (o == null)
 406                                 return false;
 407
 408                         // TODO: return UnderlyingSystemType == o.UnderlyingSystemType;
 409                         Type cmp = o as Type;
 410                         if (cmp == null)
 411                                 return false;
 412                         return Equals (cmp);
 413                 }
 414
 415                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 416                 public extern bool Equals (Type type);
 417
 418                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 419                 private static extern Type internal_from_handle (IntPtr handle);
 420
 421                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 422                 private static extern Type internal_from_name (string name, bool throwOnError, bool ignoreCase);
 423
 424                 public static Type GetType(string typeName)
 425                 {
 426                         if (typeName == null)
 427                                 throw new ArgumentNullException ("typeName");
 428
 429                         return internal_from_name (typeName, false, false);
 430                 }
 431
 432                 public static Type GetType(string typeName, bool throwOnError)
 433                 {
 434                         if (typeName == null)
 435                                 throw new ArgumentNullException ("typeName");
 436
 437                         Type type = internal_from_name (typeName, throwOnError, false);
 438                         if (throwOnError && type == null)
 439                                 throw new TypeLoadException ("Error loading '" + typeName + "'");
 440
 441                         return type;
 442                 }
 443
 444                 public static Type GetType(string typeName, bool throwOnError, bool ignoreCase)
 445                 {
 446                         if (typeName == null)
 447                                 throw new ArgumentNullException ("typeName");
 448
 449                         Type t = internal_from_name (typeName, throwOnError, ignoreCase);
 450                         if (throwOnError && t == null)
 451                                 throw new TypeLoadException ("Error loading '" + typeName + "'");
 452
 453                         return t;
 454                 }
 455
 456                 public static Type[] GetTypeArray (object[] args) {
 457                         if (args == null)
 458                                 throw new ArgumentNullException ("args");
 459
 460                         Type[] ret;
 461                         ret = new Type [args.Length];
 462                         for (int i = 0; i < args.Length; ++i)
 463                                 ret [i] = args[i].GetType ();
 464                         return ret;
 465                 }
 466
 467                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 468                 internal extern static TypeCode GetTypeCodeInternal (Type type);
 469
 470                 public static TypeCode GetTypeCode (Type type) {
 471                         type = type.UnderlyingSystemType;
 472
 473                         if (!type.IsSystemType)
 474                                 return Type.GetTypeCode (typeof (object));
 475                         else
 476                                 return GetTypeCodeInternal (type);
 477                 }
 478
 479                 [MonoTODO]
 480                 public static Type GetTypeFromCLSID (Guid clsid)
 481                 {
 482                         throw new NotImplementedException ();
 483                 }
 484
 485                 [MonoTODO]
 486                 public static Type GetTypeFromCLSID (Guid clsid, bool throwOnError)
 487                 {
 488                         throw new NotImplementedException ();
 489                 }
 490
 491                 [MonoTODO]
 492                 public static Type GetTypeFromCLSID (Guid clsid, string server)
 493                 {
 494                         throw new NotImplementedException ();
 495                 }
 496
 497                 [MonoTODO]
 498                 public static Type GetTypeFromCLSID (Guid clsid, string server, bool throwOnError)
 499                 {
 500                         throw new NotImplementedException ();
 501                 }
 502
 503                 public static Type GetTypeFromHandle (RuntimeTypeHandle handle)
 504                 {
 505                         return internal_from_handle (handle.Value);
 506                 }
 507
 508                 [MonoTODO]
 509                 public static Type GetTypeFromProgID (string progID)
 510                 {
 511                         throw new NotImplementedException ();
 512                 }
 513
 514                 [MonoTODO]
 515                 public static Type GetTypeFromProgID (string progID, bool throwOnError)
 516                 {
 517                         throw new NotImplementedException ();
 518                 }
 519
 520                 [MonoTODO]
 521                 public static Type GetTypeFromProgID (string progID, string server)
 522                 {
 523                         throw new NotImplementedException ();
 524                 }
 525
 526                 [MonoTODO]
 527                 public static Type GetTypeFromProgID (string progID, string server, bool throwOnError)
 528                 {
 529                         throw new NotImplementedException ();
 530                 }
 531
 532                 public static RuntimeTypeHandle GetTypeHandle (object o)
 533                 {
 534                         return o.GetType().TypeHandle;
 535                 }
 536
 537                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 538                 internal static extern bool type_is_subtype_of (Type a, Type b, bool check_interfaces);
 539
 540                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 541                 internal static extern bool type_is_assignable_from (Type a, Type b);
 542
 543                 internal static bool is_subtype_of (Type a, Type b, bool check_interfaces)
 544                 {
 545                         a = a.UnderlyingSystemType;
 546                         b = b.UnderlyingSystemType;
 547
 548                         if (!a.IsSystemType || !b.IsSystemType)
 549                                 return false;
 550                         else
 551                                 return type_is_subtype_of (a, b, check_interfaces);
 552                 }
 553
 554 #if NET_2_0
 555                 [ComVisible (true)]
 556 #endif
 557                 public virtual bool IsSubclassOf (Type c)
 558                 {
 559                         if (c == null)
 560                                 return false;
 561
 562                         return (this != c) && is_subtype_of (this, c, false);
 563                 }
 564
 565                 public virtual Type[] FindInterfaces (TypeFilter filter, object filterCriteria)
 566                 {
 567                         if (filter == null)
 568                                 throw new ArgumentNullException ("filter");
 569
 570                         ArrayList ifaces = new ArrayList ();
 571                         foreach (Type iface in GetInterfaces ()) {
 572                                 if (filter (iface, filterCriteria))
 573                                         ifaces.Add (iface);
 574                         }
 575
 576                         return (Type []) ifaces.ToArray (typeof (Type));
 577                 }
 578
 579                 public Type GetInterface (string name) {
 580                         return GetInterface (name, false);
 581                 }
 582
 583                 public abstract Type GetInterface (string name, bool ignoreCase);
 584
 585                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 586                 internal static extern void GetInterfaceMapData (Type t, Type iface, out MethodInfo[] targets, out MethodInfo[] methods);
 587
 588 #if NET_2_0
 589                 [ComVisible (true)]
 590 #endif
 591                 public virtual InterfaceMapping GetInterfaceMap (Type interfaceType) {
 592                         InterfaceMapping res;
 593                         if (interfaceType == null)
 594                                 throw new ArgumentNullException ("interfaceType");
 595                         if (!interfaceType.IsInterface)
 596                                 throw new ArgumentException (Locale.GetText ("Argument must be an interface."), "interfaceType");
 597                         res.TargetType = this;
 598                         res.InterfaceType = interfaceType;
 599                         GetInterfaceMapData (this, interfaceType, out res.TargetMethods, out res.InterfaceMethods);
 600                         if (res.TargetMethods == null)
 601                                 throw new ArgumentException (Locale.GetText ("Interface not found"), "interfaceType");
 602
 603                         return res;
 604                 }
 605
 606                 public abstract Type[] GetInterfaces ();
 607
 608                 public virtual bool IsAssignableFrom (Type c)
 609                 {
 610                         if (c == null)
 611                                 return false;
 612
 613                         if (Equals (c))
 614                                 return true;
 615
 616                         if (c is TypeBuilder)
 617                                 return ((TypeBuilder)c).IsAssignableTo (this);
 618
 619                         /* Handle user defined type classes */
 620                         if (!IsSystemType) {
 621                                 Type systemType = UnderlyingSystemType;
 622                                 if (!systemType.IsSystemType)
 623                                         return false;
 624                                 return systemType.IsAssignableFrom (c);
 625                         }
 626
 627                         if (!c.IsSystemType) {
 628                                 Type underlyingType = c.UnderlyingSystemType;
 629                                 if (!underlyingType.IsSystemType)
 630                                         return false;
 631                                 return IsAssignableFrom (underlyingType);
 632                         }
 633
 634                         return type_is_assignable_from (this, c);
 635                 }
 636
 637                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 638                 public extern virtual bool IsInstanceOfType (object o);
 639
 640                 public virtual int GetArrayRank ()
 641                 {
 642                         throw new NotSupportedException ();     // according to MSDN
 643                 }
 644
 645                 public abstract Type GetElementType ();
 646
 647                 public EventInfo GetEvent (string name)
 648                 {
 649                         return GetEvent (name, DefaultBindingFlags);
 650                 }
 651
 652                 public abstract EventInfo GetEvent (string name, BindingFlags bindingAttr);
 653
 654                 public virtual EventInfo[] GetEvents ()
 655                 {
 656                         return GetEvents (DefaultBindingFlags);
 657                 }
 658
 659                 public abstract EventInfo[] GetEvents (BindingFlags bindingAttr);
 660
 661                 public FieldInfo GetField( string name)
 662                 {
 663                         return GetField (name, DefaultBindingFlags);
 664                 }
 665
 666                 public abstract FieldInfo GetField( string name, BindingFlags bindingAttr);
 667
 668                 public FieldInfo[] GetFields ()
 669                 {
 670                         return GetFields (DefaultBindingFlags);
 671                 }
 672
 673                 public abstract FieldInfo[] GetFields (BindingFlags bindingAttr);
 674
 675                 public override int GetHashCode()
 676                 {
 677                         return (int)_impl.Value;
 678                 }
 679
 680                 public MemberInfo[] GetMember (string name)
 681                 {
 682                         return GetMember (name, DefaultBindingFlags);
 683                 }
 684
 685                 public virtual MemberInfo[] GetMember (string name, BindingFlags bindingAttr)
 686                 {
 687                         return GetMember (name, MemberTypes.All, bindingAttr);
 688                 }
 689
 690                 public virtual MemberInfo[] GetMember (string name, MemberTypes type, BindingFlags bindingAttr)
 691                 {
 692                         if ((bindingAttr & BindingFlags.IgnoreCase) != 0)
 693                                 return FindMembers (type, bindingAttr, FilterNameIgnoreCase, name);
 694                         else
 695                                 return FindMembers (type, bindingAttr, FilterName, name);
 696                 }
 697
 698                 public MemberInfo[] GetMembers ()
 699                 {
 700                         return GetMembers (DefaultBindingFlags);
 701                 }
 702
 703                 public abstract MemberInfo[] GetMembers (BindingFlags bindingAttr);
 704
 705                 public MethodInfo GetMethod (string name)
 706                 {
 707                         if (name == null)
 708                                 throw new ArgumentNullException ("name");
 709                         return GetMethodImpl (name, DefaultBindingFlags, null, CallingConventions.Any, null, null);
 710                 }
 711
 712                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr)
 713                 {
 714                         if (name == null)
 715                                 throw new ArgumentNullException ("name");
 716
 717                         return GetMethodImpl (name, bindingAttr, null, CallingConventions.Any, null, null);
 718                 }
 719
 720                 public MethodInfo GetMethod (string name, Type[] types)
 721                 {
 722                         return GetMethod (name, DefaultBindingFlags, null, CallingConventions.Any, types, null);
 723                 }
 724
 725                 public MethodInfo GetMethod (string name, Type[] types, ParameterModifier[] modifiers)
 726                 {
 727                         return GetMethod (name, DefaultBindingFlags, null, CallingConventions.Any, types, modifiers);
 728                 }
 729
 730                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder,
 731                                              Type[] types, ParameterModifier[] modifiers)
 732                 {
 733
 734                         return GetMethod (name, bindingAttr, binder, CallingConventions.Any, types, modifiers);
 735                 }
 736
 737                 public MethodInfo GetMethod (string name, BindingFlags bindingAttr, Binder binder,
 738                                              CallingConventions callConvention, Type[] types, ParameterModifier[] modifiers)
 739                 {
 740                         if (name == null)
 741                                 throw new ArgumentNullException ("name");
 742                         if (types == null)
 743                                 throw new ArgumentNullException ("types");
 744
 745                         for (int i = 0; i < types.Length; i++)
 746                                 if (types[i] == null)
 747                                         throw new ArgumentNullException ("types");
 748
 749                         return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
 750                 }
 751
 752                 protected abstract MethodInfo GetMethodImpl (string name, BindingFlags bindingAttr, Binder binder,
 753                                                              CallingConventions callConvention, Type[] types,
 754                                                              ParameterModifier[] modifiers);
 755
 756                 internal MethodInfo GetMethodImplInternal (string name, BindingFlags bindingAttr, Binder binder,
 757                                                                                                                         CallingConventions callConvention, Type[] types,
 758                                                                                                                         ParameterModifier[] modifiers)
 759                 {
 760                         return GetMethodImpl (name, bindingAttr, binder, callConvention, types, modifiers);
 761                 }
 762
 763                 internal virtual MethodInfo GetMethod (MethodInfo fromNoninstanciated)
 764                 {
 765                         throw new System.InvalidOperationException ("can only be called in generic type");
 766                 }
 767
 768                 internal virtual ConstructorInfo GetConstructor (ConstructorInfo fromNoninstanciated)
 769                 {
 770                         throw new System.InvalidOperationException ("can only be called in generic type");
 771                 }
 772
 773                 internal virtual FieldInfo GetField (FieldInfo fromNoninstanciated)
 774                 {
 775                         throw new System.InvalidOperationException ("can only be called in generic type");
 776                 }
 777
 778
 779                 public MethodInfo[] GetMethods ()
 780                 {
 781                         return GetMethods (DefaultBindingFlags);
 782                 }
 783
 784                 public abstract MethodInfo[] GetMethods (BindingFlags bindingAttr);
 785
 786                 public Type GetNestedType (string name)
 787                 {
 788                         return GetNestedType (name, DefaultBindingFlags);
 789                 }
 790
 791                 public abstract Type GetNestedType (string name, BindingFlags bindingAttr);
 792
 793                 public Type[] GetNestedTypes ()
 794                 {
 795                         return GetNestedTypes (DefaultBindingFlags);
 796                 }
 797
 798                 public abstract Type[] GetNestedTypes (BindingFlags bindingAttr);
 799
 800
 801                 public PropertyInfo[] GetProperties ()
 802                 {
 803                         return GetProperties (DefaultBindingFlags);
 804                 }
 805
 806                 public abstract PropertyInfo[] GetProperties (BindingFlags bindingAttr);
 807
 808
 809                 public PropertyInfo GetProperty (string name)
 810                 {
 811                         if (name == null)
 812                                 throw new ArgumentNullException ("name");
 813
 814                         return GetPropertyImpl (name, DefaultBindingFlags, null, null, null, null);
 815                 }
 816
 817                 public PropertyInfo GetProperty (string name, BindingFlags bindingAttr)
 818                 {
 819                         if (name == null)
 820                                 throw new ArgumentNullException ("name");
 821                         return GetPropertyImpl (name, bindingAttr, null, null, null, null);
 822                 }
 823
 824                 public PropertyInfo GetProperty (string name, Type returnType)
 825                 {
 826                         if (name == null)
 827                                 throw new ArgumentNullException ("name");
 828                         return GetPropertyImpl (name, DefaultBindingFlags, null, returnType, null, null);
 829                 }
 830
 831                 public PropertyInfo GetProperty (string name, Type[] types)
 832                 {
 833                         return GetProperty (name, DefaultBindingFlags, null, null, types, null);
 834                 }
 835
 836                 public PropertyInfo GetProperty (string name, Type returnType, Type[] types)
 837                 {
 838                         return GetProperty (name, DefaultBindingFlags, null, returnType, types, null);
 839                 }
 840
 841                 public PropertyInfo GetProperty( string name, Type returnType, Type[] types, ParameterModifier[] modifiers)
 842                 {
 843                         return GetProperty (name, DefaultBindingFlags, null, returnType, types, modifiers);
 844                 }
 845
 846                 public PropertyInfo GetProperty (string name, BindingFlags bindingAttr, Binder binder, Type returnType,
 847                                                  Type[] types, ParameterModifier[] modifiers)
 848                 {
 849                         if (name == null)
 850                                 throw new ArgumentNullException ("name");
 851                         if (types == null)
 852                                 throw new ArgumentNullException ("types");
 853
 854                         return GetPropertyImpl (name, bindingAttr, binder, returnType, types, modifiers);
 855                 }
 856
 857                 protected abstract PropertyInfo GetPropertyImpl (string name, BindingFlags bindingAttr, Binder binder,
 858                                                                  Type returnType, Type[] types, ParameterModifier[] modifiers);
 859
 860                 internal PropertyInfo GetPropertyImplInternal (string name, BindingFlags bindingAttr, Binder binder,
 861                                                                                                            Type returnType, Type[] types, ParameterModifier[] modifiers)
 862                 {
 863                         return GetPropertyImpl (name, bindingAttr, binder, returnType, types, modifiers);
 864                 }
 865
 866                 protected abstract ConstructorInfo GetConstructorImpl (BindingFlags bindingAttr,
 867                                                                        Binder binder,
 868                                                                        CallingConventions callConvention,
 869                                                                        Type[] types,
 870                                                                        ParameterModifier[] modifiers);
 871
 872                 protected abstract TypeAttributes GetAttributeFlagsImpl ();
 873                 protected abstract bool HasElementTypeImpl ();
 874                 protected abstract bool IsArrayImpl ();
 875                 protected abstract bool IsByRefImpl ();
 876                 protected abstract bool IsCOMObjectImpl ();
 877                 protected abstract bool IsPointerImpl ();
 878                 protected abstract bool IsPrimitiveImpl ();
 879
 880                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 881                 internal static extern bool IsArrayImpl (Type type);
 882
 883                 protected virtual bool IsValueTypeImpl ()
 884                 {
 885                         if (this == typeof (Enum) || this == typeof (ValueType))
 886                                 return false;
 887
 888                         return IsSubclassOf (typeof (ValueType));
 889                 }
 890
 891                 protected virtual bool IsContextfulImpl ()
 892                 {
 893                         return typeof (ContextBoundObject).IsAssignableFrom (this);
 894                 }
 895
 896                 protected virtual bool IsMarshalByRefImpl ()
 897                 {
 898                         return typeof (MarshalByRefObject).IsAssignableFrom (this);
 899                 }
 900
 901 #if NET_2_0
 902                 [ComVisible (true)]
 903 #endif
 904                 public ConstructorInfo GetConstructor (Type[] types)
 905                 {
 906                         return GetConstructorImpl (
 907                                 DefaultBindingFlags, null, CallingConventions.Any, types, null);
 908                 }
 909
 910 #if NET_2_0
 911                 [ComVisible (true)]
 912 #endif
 913                 public ConstructorInfo GetConstructor (BindingFlags bindingAttr, Binder binder,
 914                                                        Type[] types, ParameterModifier[] modifiers)
 915                 {
 916                         return GetConstructorImpl (
 917                                 bindingAttr, binder, CallingConventions.Any, types, modifiers);
 918                 }
 919
 920 #if NET_2_0
 921                 [ComVisible (true)]
 922 #endif
 923                 public ConstructorInfo GetConstructor (BindingFlags bindingAttr, Binder binder,
 924                                                        CallingConventions callConvention,
 925                                                        Type[] types, ParameterModifier[] modifiers)
 926                 {
 927                         if (types == null)
 928                                 throw new ArgumentNullException ("types");
 929
 930                         return GetConstructorImpl (bindingAttr, binder, callConvention, types, modifiers);
 931                 }
 932
 933 #if NET_2_0
 934                 [ComVisible (true)]
 935 #endif
 936                 public ConstructorInfo[] GetConstructors ()
 937                 {
 938                         return GetConstructors (BindingFlags.Public | BindingFlags.Instance);
 939                 }
 940
 941 #if NET_2_0
 942                 [ComVisible (true)]
 943 #endif
 944                 public abstract ConstructorInfo[] GetConstructors (BindingFlags bindingAttr);
 945
 946                 public virtual MemberInfo[] GetDefaultMembers ()
 947                 {
 948                         object [] att = GetCustomAttributes (typeof (DefaultMemberAttribute), true);
 949                         if (att.Length == 0)
 950                                 return new MemberInfo [0];
 951
 952                         MemberInfo [] member = GetMember (((DefaultMemberAttribute) att [0]).MemberName);
 953                         return (member != null) ? member : new MemberInfo [0];
 954                 }
 955
 956                 public virtual MemberInfo[] FindMembers (MemberTypes memberType, BindingFlags bindingAttr,
 957                                                          MemberFilter filter, object filterCriteria)
 958                 {
 959                         MemberInfo[] result;
 960                         ArrayList l = new ArrayList ();
 961
 962                         // Console.WriteLine ("FindMembers for {0} (Type: {1}): {2}",
 963                         // this.FullName, this.GetType().FullName, this.obj_address());
 964
 965                         if ((memberType & MemberTypes.Constructor) != 0) {
 966                                 ConstructorInfo[] c = GetConstructors (bindingAttr);
 967                                 if (filter != null) {
 968                                         foreach (MemberInfo m in c) {
 969                                                 if (filter (m, filterCriteria))
 970                                                         l.Add (m);
 971                                         }
 972                                 } else {
 973                                         l.AddRange (c);
 974                                 }
 975                         }
 976                         if ((memberType & MemberTypes.Event) != 0) {
 977                                 EventInfo[] c = GetEvents (bindingAttr);
 978                                 if (filter != null) {
 979                                         foreach (MemberInfo m in c) {
 980                                                 if (filter (m, filterCriteria))
 981                                                         l.Add (m);
 982                                         }
 983                                 } else {
 984                                         l.AddRange (c);
 985                                 }
 986                         }
 987                         if ((memberType & MemberTypes.Field) != 0) {
 988                                 FieldInfo[] c = GetFields (bindingAttr);
 989                                 if (filter != null) {
 990                                         foreach (MemberInfo m in c) {
 991                                                 if (filter (m, filterCriteria))
 992                                                         l.Add (m);
 993                                         }
 994                                 } else {
 995                                         l.AddRange (c);
 996                                 }
 997                         }
 998                         if ((memberType & MemberTypes.Method) != 0) {
 999                                 MethodInfo[] c = GetMethods (bindingAttr);
1000                                 if (filter != null) {
1001                                         foreach (MemberInfo m in c) {
1002                                                 if (filter (m, filterCriteria))
1003                                                         l.Add (m);
1004                                         }
1005                                 } else {
1006                                         l.AddRange (c);
1007                                 }
1008                         }
1009                         if ((memberType & MemberTypes.Property) != 0) {
1010                                 PropertyInfo[] c;
1011                                 int count = l.Count;
1012                                 Type ptype;
1013                                 if (filter != null) {
1014                                         ptype = this;
1015                                         while ((l.Count == count) && (ptype != null)) {
1016                                                 c = ptype.GetProperties (bindingAttr);
1017                                                 foreach (MemberInfo m in c) {
1018                                                         if (filter (m, filterCriteria))
1019                                                                 l.Add (m);
1020                                                 }
1021                                                 ptype = ptype.BaseType;
1022                                         }
1023                                 } else {
1024                                         c = GetProperties (bindingAttr);
1025                                         l.AddRange (c);
1026                                 }
1027                         }
1028                         if ((memberType & MemberTypes.NestedType) != 0) {
1029                                 Type[] c = GetNestedTypes (bindingAttr);
1030                                 if (filter != null) {
1031                                         foreach (MemberInfo m in c) {
1032                                                 if (filter (m, filterCriteria)) {
1033                                                         l.Add (m);
1034                                                 }
1035                                         }
1036                                 } else {
1037                                         l.AddRange (c);
1038                                 }
1039                         }
1040                         result = new MemberInfo [l.Count];
1041                         l.CopyTo (result);
1042                         return result;
1043                 }
1044
1045                 [DebuggerHidden]
1046                 [DebuggerStepThrough]
1047                 public object InvokeMember (string name, BindingFlags invokeAttr, Binder binder, object target, object[] args)
1048                 {
1049                         return InvokeMember (name, invokeAttr, binder, target, args, null, null, null);
1050                 }
1051
1052                 [DebuggerHidden]
1053                 [DebuggerStepThrough]
1054                 public object InvokeMember (string name, BindingFlags invokeAttr, Binder binder,
1055                                             object target, object[] args, CultureInfo culture)
1056                 {
1057                         return InvokeMember (name, invokeAttr, binder, target, args, null, culture, null);
1058                 }
1059
1060                 public abstract object InvokeMember (string name, BindingFlags invokeAttr,
1061                                                      Binder binder, object target, object[] args,
1062                                                      ParameterModifier[] modifiers,
1063                                                      CultureInfo culture, string[] namedParameters);
1064
1065                 public override string ToString()
1066                 {
1067                         return FullName;
1068                 }
1069
1070                 internal bool IsSystemType {
1071                         get {
1072                                 return _impl.Value != IntPtr.Zero;
1073                         }
1074                 }
1075
1076 #if NET_2_0 || BOOTSTRAP_NET_2_0
1077                 public abstract Type[] GetGenericArguments ();
1078
1079                 public abstract bool HasGenericArguments {
1080                         get;
1081                 }
1082
1083                 public abstract bool ContainsGenericParameters {
1084                         get;
1085                 }
1086
1087                 public extern bool IsGenericTypeDefinition {
1088                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1089                         get;
1090                 }
1091
1092                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1093                 extern Type GetGenericTypeDefinition_impl ();
1094
1095                 public virtual Type GetGenericTypeDefinition ()
1096                 {
1097                         Type res = GetGenericTypeDefinition_impl ();
1098                         if (res == null)
1099                                 throw new InvalidOperationException ();
1100
1101                         return res;
1102                 }
1103
1104                 public extern bool IsGenericInstance {
1105                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
1106                         get;
1107                 }
1108
1109                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1110                 static extern Type BindGenericParameters (Type gt, Type [] types);
1111
1112 #if NET_2_0
1113                 [ComVisible (true)]
1114 #endif
1115                 public Type BindGenericParameters (Type [] types)
1116                 {
1117                         if (types == null)
1118                                 throw new ArgumentNullException ("types");
1119                         foreach (Type t in types) {
1120                                 if (t == null)
1121                                         throw new ArgumentNullException ("types");
1122                         }
1123                         Type res = BindGenericParameters (this, types);
1124                         if (res == null)
1125                                 throw new TypeLoadException ();
1126                         return res;
1127                 }
1128
1129                 public Type MakeGenericType (Type[] types)
1130                 {
1131                         return BindGenericParameters (types);
1132                 }
1133
1134                 public abstract bool IsGenericParameter {
1135                         get;
1136                 }
1137
1138                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1139                 extern int GetGenericParameterPosition ();
1140
1141                 public virtual int GenericParameterPosition {
1142                         get {
1143                                 int res = GetGenericParameterPosition ();
1144                                 if (res < 0)
1145                                         throw new InvalidOperationException ();
1146                                 return res;
1147                         }
1148                 }
1149
1150                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1151                 extern GenericParameterAttributes GetGenericParameterAttributes ();
1152
1153                 public virtual GenericParameterAttributes GenericParameterAttributes {
1154                         get {
1155                                 if (!IsGenericParameter)
1156                                         throw new InvalidOperationException ();
1157
1158                                 return GetGenericParameterAttributes ();
1159                         }
1160                 }
1161
1162                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1163                 extern Type[] GetGenericParameterConstraints_impl ();
1164
1165                 public virtual Type[] GetGenericParameterConstraints ()
1166                 {
1167                         if (!IsGenericParameter)
1168                                 throw new InvalidOperationException ();
1169
1170                         return GetGenericParameterConstraints_impl ();
1171                 }
1172
1173                 public abstract MethodInfo DeclaringMethod {
1174                         get;
1175                 }
1176
1177                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1178                 extern Type make_array_type (int rank);
1179
1180                 public virtual Type MakeArrayType ()
1181                 {
1182                         return MakeArrayType (1);
1183                 }
1184
1185                 public virtual Type MakeArrayType (int rank)
1186                 {
1187                         if (rank < 1)
1188                                 throw new IndexOutOfRangeException ();
1189                         return make_array_type (rank);
1190                 }
1191
1192                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1193                 extern Type make_byref_type ();
1194
1195                 public virtual Type MakeByRefType ()
1196                 {
1197                         return make_byref_type ();
1198                 }
1199
1200                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1201                 public extern virtual Type MakePointerType ();
1202
1203                 [MonoTODO]
1204                 public static Type ReflectionOnlyGetType (string typeName,
1205                                                                                                   bool throwIfNotFound,
1206                                                                                                   bool ignoreCase)
1207                 {
1208                         throw new NotImplementedException ();
1209                 }
1210
1211                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
1212                 extern void GetPacking (out int packing, out int size);
1213
1214                 public virtual StructLayoutAttribute StructLayoutAttribute {
1215                         get {
1216                                 LayoutKind kind;
1217
1218                                 if (IsLayoutSequential)
1219                                         kind = LayoutKind.Sequential;
1220                                 else if (IsExplicitLayout)
1221                                         kind = LayoutKind.Explicit;
1222                                 else
1223                                         kind = LayoutKind.Auto;
1224
1225                                 StructLayoutAttribute attr = new StructLayoutAttribute (kind);
1226
1227                                 if (IsUnicodeClass)
1228                                         attr.CharSet = CharSet.Unicode;
1229                                 else if (IsAnsiClass)
1230                                         attr.CharSet = CharSet.Ansi;
1231                                 else
1232                                         attr.CharSet = CharSet.Auto;
1233
1234                                 if (kind != LayoutKind.Auto)
1235                                         GetPacking (out attr.Pack, out attr.Size);
1236
1237                                 return attr;
1238                         }
1239                 }
1240
1241                 internal object[] GetPseudoCustomAttributes () {
1242                         int count = 0;
1243
1244                         if (IsSerializable)
1245                                 count ++;
1246
1247                         if (count == 0)
1248                                 return null;
1249                         object[] attrs = new object [count];
1250                         count = 0;
1251
1252                         if (IsSerializable)
1253                                 attrs [count ++] = new SerializableAttribute ();
1254
1255                         return attrs;
1256                 }
1257
1258 #endif
1259         }
1260 }