mcs/class/corlib/ReferenceSources/RuntimeType.cs

   1 //
   2 // RuntimeType.cs
   3 //
   4 // Authors:
   5 //      Marek Safar  <marek.safar@gmail.com>
   6 //
   7 // Copyright (C) 2015 Xamarin Inc (http://www.xamarin.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Reflection;
  30 using System.Runtime.CompilerServices;
  31 using System.Threading;
  32 using System.Collections.Generic;
  33 using System.Runtime.InteropServices;
  34 using System.Globalization;
  35 #if MONO_COM
  36 using System.Reflection.Emit;
  37 #endif
  38 using System.Diagnostics.Contracts;
  39 using System.Security;
  40 using System.Runtime.Serialization;
  41
  42 namespace System
  43 {
  44         partial class RuntimeType
  45         {
  46                 internal virtual MonoCMethod GetDefaultConstructor ()
  47                 {
  48                         // TODO: Requires MonoType
  49                         throw new NotSupportedException ();
  50                 }
  51
  52                 string GetDefaultMemberName ()
  53                 {
  54                         object [] att = GetCustomAttributes (typeof (DefaultMemberAttribute), true);
  55                         return att.Length != 0 ? ((DefaultMemberAttribute) att [0]).MemberName : null;
  56                 }
  57
  58                 RuntimeConstructorInfo m_serializationCtor;
  59                 internal RuntimeConstructorInfo GetSerializationCtor()
  60                 {
  61                         if (m_serializationCtor == null) {
  62                                 var s_SICtorParamTypes = new Type[] { typeof(SerializationInfo), typeof(StreamingContext) };
  63
  64                                 m_serializationCtor = GetConstructor(
  65                                         BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
  66                                         null,
  67                                         CallingConventions.Any,
  68                                         s_SICtorParamTypes,
  69                                         null) as RuntimeConstructorInfo;
  70                         }
  71
  72                         return m_serializationCtor;
  73                 }
  74
  75                 internal Object CreateInstanceSlow(bool publicOnly, bool skipCheckThis, bool fillCache, ref StackCrawlMark stackMark)
  76                 {
  77                         bool bNeedSecurityCheck = true;
  78                         bool bCanBeCached = false;
  79                         bool bSecurityCheckOff = false;
  80
  81                         if (!skipCheckThis)
  82                                 CreateInstanceCheckThis();
  83
  84                         if (!fillCache)
  85                                 bSecurityCheckOff = true;
  86
  87                         return CreateInstanceMono (!publicOnly);
  88                 }
  89
  90                 object CreateInstanceMono (bool nonPublic)
  91                 {
  92                         var ctor = GetDefaultConstructor ();
  93                         if (!nonPublic && ctor != null && !ctor.IsPublic) {
  94                                 ctor = null;
  95                         }
  96
  97                         if (ctor == null) {
  98                                 Type elementType = this.GetRootElementType();
  99                                 if (ReferenceEquals (elementType, typeof (TypedReference)) || ReferenceEquals (elementType, typeof (RuntimeArgumentHandle)))
 100                                         throw new NotSupportedException (Environment.GetResourceString ("NotSupported_ContainsStackPtr"));
 101
 102                                 if (IsValueType)
 103                                         return CreateInstanceInternal (this);
 104
 105                                 throw new MissingMethodException (Locale.GetText ("Default constructor not found for type " + FullName));
 106                         }
 107
 108                         // TODO: .net does more checks in unmanaged land in RuntimeTypeHandle::CreateInstance
 109                         if (IsAbstract) {
 110                                 throw new MissingMethodException (Locale.GetText ("Cannot create an abstract class '{0}'.", FullName));
 111                         }
 112
 113                         return ctor.InternalInvoke (null, null);
 114                 }
 115
 116                 internal Object CheckValue (Object value, Binder binder, CultureInfo culture, BindingFlags invokeAttr)
 117                 {
 118                         bool failed = false;
 119                         var res = TryConvertToType (value, ref failed);
 120                         if (!failed)
 121                                 return res;
 122
 123                         if ((invokeAttr & BindingFlags.ExactBinding) == BindingFlags.ExactBinding)
 124                                 throw new ArgumentException(String.Format(CultureInfo.CurrentUICulture, Environment.GetResourceString("Arg_ObjObjEx"), value.GetType(), this));
 125
 126                         if (binder != null && binder != Type.DefaultBinder)
 127                                 return binder.ChangeType (value, this, culture);
 128
 129                         throw new ArgumentException(String.Format(CultureInfo.CurrentUICulture, Environment.GetResourceString("Arg_ObjObjEx"), value.GetType(), this));
 130                 }
 131
 132                 object TryConvertToType (object value, ref bool failed)
 133                 {
 134                         if (IsInstanceOfType (value)) {
 135                                 return value;
 136                         }
 137
 138                         if (IsByRef) {
 139                                 var elementType = GetElementType ();
 140                                 if (value == null || elementType.IsInstanceOfType (value)) {
 141                                         return value;
 142                                 }
 143                         }
 144
 145                         if (value == null)
 146                                 return value;
 147
 148                         if (IsEnum) {
 149                                 var type = Enum.GetUnderlyingType (this);
 150                                 if (type == value.GetType ())
 151                                         return value;
 152                                 var res = IsConvertibleToPrimitiveType (value, this);
 153                                 if (res != null)
 154                                         return res;
 155                         } else if (IsPrimitive) {
 156                                 var res = IsConvertibleToPrimitiveType (value, this);
 157                                 if (res != null)
 158                                         return res;
 159                         } else if (IsPointer) {
 160                                 var vtype = value.GetType ();
 161                                 if (vtype == typeof (IntPtr) || vtype == typeof (UIntPtr))
 162                                         return value;
 163                         }
 164
 165                         failed = true;
 166                         return null;
 167                 }
 168
 169                 // Binder uses some incompatible conversion rules. For example
 170                 // int value cannot be used with decimal parameter but in other
 171                 // ways it's more flexible than normal convertor, for example
 172                 // long value can be used with int based enum
 173                 static object IsConvertibleToPrimitiveType (object value, Type targetType)
 174                 {
 175                         var type = value.GetType ();
 176                         if (type.IsEnum) {
 177                                 type = Enum.GetUnderlyingType (type);
 178                                 if (type == targetType)
 179                                         return value;
 180                         }
 181
 182                         var from = Type.GetTypeCode (type);
 183                         var to = Type.GetTypeCode (targetType);
 184
 185                         switch (to) {
 186                                 case TypeCode.Char:
 187                                         switch (from) {
 188                                                 case TypeCode.Byte:
 189                                                         return (Char) (Byte) value;
 190                                                 case TypeCode.UInt16:
 191                                                         return value;
 192                                         }
 193                                         break;
 194                                 case TypeCode.Int16:
 195                                         switch (from) {
 196                                                 case TypeCode.Byte:
 197                                                         return (Int16) (Byte) value;
 198                                                 case TypeCode.SByte:
 199                                                         return (Int16) (SByte) value;
 200                                         }
 201                                         break;
 202                                 case TypeCode.UInt16:
 203                                         switch (from) {
 204                                                 case TypeCode.Byte:
 205                                                         return (UInt16) (Byte) value;
 206                                                 case TypeCode.Char:
 207                                                         return value;
 208                                         }
 209                                         break;
 210                                 case TypeCode.Int32:
 211                                         switch (from) {
 212                                                 case TypeCode.Byte:
 213                                                         return (Int32) (Byte) value;
 214                                                 case TypeCode.SByte:
 215                                                         return (Int32) (SByte) value;
 216                                                 case TypeCode.Char:
 217                                                         return (Int32) (Char) value;
 218                                                 case TypeCode.Int16:
 219                                                         return (Int32) (Int16) value;
 220                                                 case TypeCode.UInt16:
 221                                                         return (Int32) (UInt16) value;
 222                                         }
 223                                         break;
 224                                 case TypeCode.UInt32:
 225                                         switch (from) {
 226                                                 case TypeCode.Byte:
 227                                                         return (UInt32) (Byte) value;
 228                                                 case TypeCode.Char:
 229                                                         return (UInt32) (Char) value;
 230                                                 case TypeCode.UInt16:
 231                                                         return (UInt32) (UInt16) value;
 232                                         }
 233                                         break;
 234                                 case TypeCode.Int64:
 235                                         switch (from) {
 236                                                 case TypeCode.Byte:
 237                                                         return (Int64) (Byte) value;
 238                                                 case TypeCode.SByte:
 239                                                         return (Int64) (SByte) value;
 240                                                 case TypeCode.Int16:
 241                                                         return (Int64) (Int16) value;
 242                                                 case TypeCode.Char:
 243                                                         return (Int64) (Char) value;
 244                                                 case TypeCode.UInt16:
 245                                                         return (Int64) (UInt16) value;
 246                                                 case TypeCode.Int32:
 247                                                         return (Int64) (Int32) value;
 248                                                 case TypeCode.UInt32:
 249                                                         return (Int64) (UInt32) value;
 250                                         }
 251                                         break;
 252                                 case TypeCode.UInt64:
 253                                         switch (from) {
 254                                                 case TypeCode.Byte:
 255                                                         return (UInt64) (Byte) value;
 256                                                 case TypeCode.Char:
 257                                                         return (UInt64) (Char) value;
 258                                                 case TypeCode.UInt16:
 259                                                         return (UInt64) (UInt16) value;
 260                                                 case TypeCode.UInt32:
 261                                                         return (UInt64) (UInt32) value;
 262                                         }
 263                                         break;
 264                                 case TypeCode.Single:
 265                                         switch (from) {
 266                                                 case TypeCode.Byte:
 267                                                         return (Single) (Byte) value;
 268                                                 case TypeCode.SByte:
 269                                                         return (Single) (SByte) value;
 270                                                 case TypeCode.Int16:
 271                                                         return (Single) (Int16) value;
 272                                                 case TypeCode.Char:
 273                                                         return (Single) (Char) value;
 274                                                 case TypeCode.UInt16:
 275                                                         return (Single) (UInt16) value;
 276                                                 case TypeCode.Int32:
 277                                                         return (Single) (Int32) value;
 278                                                 case TypeCode.UInt32:
 279                                                         return (Single) (UInt32) value;
 280                                                 case TypeCode.Int64:
 281                                                         return (Single) (Int64) value;
 282                                                 case TypeCode.UInt64:
 283                                                         return (Single) (UInt64) value;
 284                                         }
 285                                         break;
 286                                 case TypeCode.Double:
 287                                         switch (from) {
 288                                                 case TypeCode.Byte:
 289                                                         return (Double) (Byte) value;
 290                                                 case TypeCode.SByte:
 291                                                         return (Double) (SByte) value;
 292                                                 case TypeCode.Char:
 293                                                         return (Double) (Char) value;
 294                                                 case TypeCode.Int16:
 295                                                         return (Double) (Int16) value;
 296                                                 case TypeCode.UInt16:
 297                                                         return (Double) (UInt16) value;
 298                                                 case TypeCode.Int32:
 299                                                         return (Double) (Int32) value;
 300                                                 case TypeCode.UInt32:
 301                                                         return (Double) (UInt32) value;
 302                                                 case TypeCode.Int64:
 303                                                         return (Double) (Int64) value;
 304                                                 case TypeCode.UInt64:
 305                                                         return (Double) (UInt64) value;
 306                                                 case TypeCode.Single:
 307                                                         return (Double) (Single) value;
 308                                         }
 309                                         break;
 310                         }
 311
 312                         // Everything else is rejected
 313                         return null;
 314                 }
 315
 316                 string GetCachedName (TypeNameKind kind)
 317                 {
 318                         switch (kind) {
 319                         case TypeNameKind.SerializationName:
 320                                 return ToString ();
 321                         default:
 322                                 throw new NotImplementedException ();
 323                         }
 324                 }
 325
 326                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 327                 extern Type make_array_type (int rank);
 328
 329                 public override Type MakeArrayType ()
 330                 {
 331                         return make_array_type (0);
 332                 }
 333
 334                 public override Type MakeArrayType (int rank)
 335                 {
 336                         if (rank < 1 || rank > 255)
 337                                 throw new IndexOutOfRangeException ();
 338                         return make_array_type (rank);
 339                 }
 340
 341                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 342                 extern Type make_byref_type ();
 343
 344                 public override Type MakeByRefType ()
 345                 {
 346                         if (IsByRef)
 347                                 throw new TypeLoadException ("Can not call MakeByRefType on a ByRef type");
 348                         return make_byref_type ();
 349                 }
 350
 351                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 352                 static extern Type MakePointerType (Type type);
 353
 354                 public override Type MakePointerType ()
 355                 {
 356                         return MakePointerType (this);
 357                 }
 358
 359                 public override StructLayoutAttribute StructLayoutAttribute {
 360                         get {
 361                                 return GetStructLayoutAttribute ();
 362                         }
 363                 }
 364
 365                 public override bool ContainsGenericParameters {
 366                         get {
 367                                 if (IsGenericParameter)
 368                                         return true;
 369
 370                                 if (IsGenericType) {
 371                                         foreach (Type arg in GetGenericArguments ())
 372                                                 if (arg.ContainsGenericParameters)
 373                                                         return true;
 374                                 }
 375
 376                                 if (HasElementType)
 377                                         return GetElementType ().ContainsGenericParameters;
 378
 379                                 return false;
 380                         }
 381                 }
 382
 383                 public override Type[] GetGenericParameterConstraints()
 384                 {
 385                         if (!IsGenericParameter)
 386                                 throw new InvalidOperationException(Environment.GetResourceString("Arg_NotGenericParameter"));
 387                         Contract.EndContractBlock();
 388
 389                         Type[] constraints = GetGenericParameterConstraints_impl ();
 390
 391                         if (constraints == null)
 392                                 constraints = EmptyArray<Type>.Value;
 393
 394                         return constraints;
 395                 }
 396
 397                 internal static object CreateInstanceForAnotherGenericParameter (Type genericType, RuntimeType genericArgument)
 398                 {
 399                         var gt = (RuntimeType) MakeGenericType (genericType, new Type [] { genericArgument });
 400                         var ctor = gt.GetDefaultConstructor ();
 401                         return ctor.InternalInvoke (null, null);
 402                 }
 403
 404                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 405                 static extern Type MakeGenericType (Type gt, Type [] types);
 406
 407                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 408                 internal extern RuntimeMethodInfo[] GetMethodsByName (string name, BindingFlags bindingAttr, bool ignoreCase, Type reflected_type);
 409
 410                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 411                 extern RuntimePropertyInfo[] GetPropertiesByName (string name, BindingFlags bindingAttr, bool icase, Type reflected_type);
 412
 413                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 414                 extern RuntimeConstructorInfo[] GetConstructors_internal (BindingFlags bindingAttr, Type reflected_type);
 415
 416                 public override InterfaceMapping GetInterfaceMap (Type ifaceType)
 417                 {
 418                         if (IsGenericParameter)
 419                                 throw new InvalidOperationException(Environment.GetResourceString("Arg_GenericParameter"));
 420
 421                         if ((object)ifaceType == null)
 422                                 throw new ArgumentNullException("ifaceType");
 423                         Contract.EndContractBlock();
 424
 425                         RuntimeType ifaceRtType = ifaceType as RuntimeType;
 426
 427                         if (ifaceRtType == null)
 428                                 throw new ArgumentException(Environment.GetResourceString("Argument_MustBeRuntimeType"), "ifaceType");
 429
 430                         InterfaceMapping res;
 431                         if (!ifaceType.IsInterface)
 432                                 throw new ArgumentException (Locale.GetText ("Argument must be an interface."), "ifaceType");
 433                         if (IsInterface)
 434                                 throw new ArgumentException ("'this' type cannot be an interface itself");
 435                         res.TargetType = this;
 436                         res.InterfaceType = ifaceType;
 437                         GetInterfaceMapData (this, ifaceType, out res.TargetMethods, out res.InterfaceMethods);
 438                         if (res.TargetMethods == null)
 439                                 throw new ArgumentException (Locale.GetText ("Interface not found"), "ifaceType");
 440
 441                         return res;
 442                 }
 443
 444                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 445                 static extern void GetInterfaceMapData (Type t, Type iface, out MethodInfo[] targets, out MethodInfo[] methods);
 446
 447                 public override Guid GUID {
 448                         get {
 449                                 object[] att = GetCustomAttributes(typeof(System.Runtime.InteropServices.GuidAttribute), true);
 450                                 if (att.Length == 0)
 451                                         return Guid.Empty;
 452                                 return new Guid(((System.Runtime.InteropServices.GuidAttribute)att[0]).Value);
 453                         }
 454                 }
 455
 456                 StructLayoutAttribute GetStructLayoutAttribute ()
 457                 {
 458                         LayoutKind kind;
 459
 460                         if (IsLayoutSequential)
 461                                 kind = LayoutKind.Sequential;
 462                         else if (IsExplicitLayout)
 463                                 kind = LayoutKind.Explicit;
 464                         else
 465                                 kind = LayoutKind.Auto;
 466
 467                         StructLayoutAttribute attr = new StructLayoutAttribute (kind);
 468
 469                         if (IsUnicodeClass)
 470                                 attr.CharSet = CharSet.Unicode;
 471                         else if (IsAnsiClass)
 472                                 attr.CharSet = CharSet.Ansi;
 473                         else
 474                                 attr.CharSet = CharSet.Auto;
 475
 476                         if (kind != LayoutKind.Auto) {
 477                                 int packing;
 478                                 GetPacking (out packing, out attr.Size);
 479                                 // 0 means no data provided, we end up with default value
 480                                 if (packing != 0)
 481                                         attr.Pack = packing;
 482                         }
 483
 484                         return attr;
 485                 }
 486
 487                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 488                 extern void GetPacking (out int packing, out int size);
 489
 490 #if MONO_COM
 491                 private static Dictionary<Guid, Type> clsid_types;
 492                 private static AssemblyBuilder clsid_assemblybuilder;
 493 #endif
 494
 495                 internal static Type GetTypeFromCLSIDImpl(Guid clsid, String server, bool throwOnError)
 496                 {
 497 #if MONO_COM
 498                         Type result;
 499
 500                         if (clsid_types == null)
 501                         {
 502                                 Dictionary<Guid, Type> new_clsid_types = new Dictionary<Guid, Type> ();
 503                                 Interlocked.CompareExchange<Dictionary<Guid, Type>>(
 504                                         ref clsid_types, new_clsid_types, null);
 505                         }
 506
 507                         lock (clsid_types) {
 508                                 if (clsid_types.TryGetValue(clsid, out result))
 509                                         return result;
 510
 511                                 if (clsid_assemblybuilder == null)
 512                                 {
 513                                         AssemblyName assemblyname = new AssemblyName ();
 514                                         assemblyname.Name = "GetTypeFromCLSIDDummyAssembly";
 515                                         clsid_assemblybuilder = AppDomain.CurrentDomain.DefineDynamicAssembly (
 516                                                 assemblyname, AssemblyBuilderAccess.Run);
 517                                 }
 518                                 ModuleBuilder modulebuilder = clsid_assemblybuilder.DefineDynamicModule (
 519                                         clsid.ToString ());
 520
 521                                 TypeBuilder typebuilder = modulebuilder.DefineType ("System.__ComObject",
 522                                         TypeAttributes.Public | TypeAttributes.Class, typeof(System.__ComObject));
 523
 524                                 Type[] guidattrtypes = new Type[] { typeof(string) };
 525
 526                                 CustomAttributeBuilder customattr = new CustomAttributeBuilder (
 527                                         typeof(GuidAttribute).GetConstructor (guidattrtypes),
 528                                         new object[] { clsid.ToString () });
 529
 530                                 typebuilder.SetCustomAttribute (customattr);
 531
 532                                 customattr = new CustomAttributeBuilder (
 533                                         typeof(ComImportAttribute).GetConstructor (EmptyTypes),
 534                                         new object[0] {});
 535
 536                                 typebuilder.SetCustomAttribute (customattr);
 537
 538                                 result = typebuilder.CreateType ();
 539
 540                                 clsid_types.Add(clsid, result);
 541
 542                                 return result;
 543                         }
 544 #else
 545                         throw new NotImplementedException ("Unmanaged activation removed");
 546 #endif
 547                 }
 548
 549                 protected override TypeCode GetTypeCodeImpl ()
 550                 {
 551                         return GetTypeCodeImplInternal (this);
 552                 }
 553
 554                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 555                 extern static TypeCode GetTypeCodeImplInternal (Type type);
 556
 557                 internal static Type GetTypeFromProgIDImpl(String progID, String server, bool throwOnError)
 558                 {
 559                         throw new NotImplementedException ("Unmanaged activation is not supported");
 560                 }
 561
 562                 public override string ToString()
 563                 {
 564                         return getFullName (false, false);
 565                 }
 566
 567                 bool IsGenericCOMObjectImpl ()
 568                 {
 569                         return false;
 570                 }
 571
 572                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 573                 static extern object CreateInstanceInternal (Type type);
 574
 575                 public extern override MethodBase DeclaringMethod {
 576                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 577                         get;
 578                 }
 579
 580                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 581                 internal extern string getFullName(bool full_name, bool assembly_qualified);
 582
 583                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 584                 extern Type[] GetGenericArgumentsInternal (bool runtimeArray);
 585
 586                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 587                 extern GenericParameterAttributes GetGenericParameterAttributes ();
 588
 589                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 590                 extern Type[] GetGenericParameterConstraints_impl ();
 591
 592                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 593                 extern int GetGenericParameterPosition ();
 594
 595                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 596                 extern RuntimeEventInfo[] GetEvents_internal (string name, BindingFlags bindingAttr, Type reflected_type);
 597
 598                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 599                 extern RuntimeFieldInfo[] GetFields_internal (string name, BindingFlags bindingAttr, Type reflected_type);
 600
 601                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 602                 public extern override Type[] GetInterfaces();
 603
 604                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 605                 extern RuntimeType[] GetNestedTypes_internal (string name, BindingFlags bindingAttr);
 606
 607                 public override string AssemblyQualifiedName {
 608                         get {
 609                                 return getFullName (true, true);
 610                         }
 611                 }
 612
 613                 public extern override Type DeclaringType {
 614                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 615                         get;
 616                 }
 617
 618                 public override string FullName {
 619                         get {
 620                                 throw new NotImplementedException ();
 621                         }
 622                 }
 623
 624                 public extern override string Name {
 625                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 626                         get;
 627                 }
 628
 629                 public extern override string Namespace {
 630                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 631                         get;
 632                 }
 633
 634                 //seclevel { transparent = 0, safe-critical = 1, critical = 2}
 635                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 636                 public extern int get_core_clr_security_level ();
 637
 638                 public override bool IsSecurityTransparent {
 639                         get { return get_core_clr_security_level () == 0; }
 640                 }
 641
 642                 public override bool IsSecurityCritical {
 643                         get { return get_core_clr_security_level () > 0; }
 644                 }
 645
 646                 public override bool IsSecuritySafeCritical {
 647                         get { return get_core_clr_security_level () == 1; }
 648                 }
 649         }
 650 }