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         // Contains information about the type which is expensive to compute
  45         [StructLayout (LayoutKind.Sequential)]
  46         internal class MonoTypeInfo {
  47                 // this is the displayed form: special characters
  48                 // ,+*&*[]\ in the identifier portions of the names
  49                 // have been escaped with a leading backslash (\)
  50                 public string full_name;
  51                 public MonoCMethod default_ctor;
  52         }
  53
  54         [StructLayout (LayoutKind.Sequential)]
  55         partial class RuntimeType
  56         {
  57                 [NonSerialized]
  58                 MonoTypeInfo type_info;
  59
  60                 internal Object GenericCache;
  61
  62                 internal RuntimeType (Object obj)
  63                 {
  64                         throw new NotImplementedException ();
  65                 }
  66
  67                 internal MonoCMethod GetDefaultConstructor ()
  68                 {
  69                         MonoCMethod ctor = null;
  70
  71                         if (type_info == null)
  72                                 type_info = new MonoTypeInfo ();
  73                         else
  74                                 ctor = type_info.default_ctor;
  75
  76                         if (ctor == null) {
  77                                 var ctors = GetConstructors (BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
  78
  79                                 for (int i = 0; i < ctors.Length; ++i) {
  80                                         if (ctors [i].GetParametersCount () == 0) {
  81                                                 type_info.default_ctor = ctor = (MonoCMethod) ctors [i];
  82                                                 break;
  83                                         }
  84                                 }
  85                         }
  86
  87                         return ctor;
  88                 }
  89
  90                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  91                 extern MethodInfo GetCorrespondingInflatedMethod (MethodInfo generic);
  92
  93                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  94                 extern ConstructorInfo GetCorrespondingInflatedConstructor (ConstructorInfo generic);
  95
  96                 internal override MethodInfo GetMethod (MethodInfo fromNoninstanciated)
  97                 {
  98                         if (fromNoninstanciated == null)
  99                                 throw new ArgumentNullException ("fromNoninstanciated");
 100                         return GetCorrespondingInflatedMethod (fromNoninstanciated);
 101                 }
 102
 103                 internal override ConstructorInfo GetConstructor (ConstructorInfo fromNoninstanciated)
 104                 {
 105                         if (fromNoninstanciated == null)
 106                                 throw new ArgumentNullException ("fromNoninstanciated");
 107                         return GetCorrespondingInflatedConstructor (fromNoninstanciated);
 108                 }
 109
 110                 internal override FieldInfo GetField (FieldInfo fromNoninstanciated)
 111                 {
 112                         /* create sensible flags from given FieldInfo */
 113                         BindingFlags flags = fromNoninstanciated.IsStatic ? BindingFlags.Static : BindingFlags.Instance;
 114                         flags |= fromNoninstanciated.IsPublic ? BindingFlags.Public : BindingFlags.NonPublic;
 115                         return GetField (fromNoninstanciated.Name, flags);
 116                 }
 117
 118                 string GetDefaultMemberName ()
 119                 {
 120                         object [] att = GetCustomAttributes (typeof (DefaultMemberAttribute), true);
 121                         return att.Length != 0 ? ((DefaultMemberAttribute) att [0]).MemberName : null;
 122                 }
 123
 124                 RuntimeConstructorInfo m_serializationCtor;
 125                 internal RuntimeConstructorInfo GetSerializationCtor()
 126                 {
 127                         if (m_serializationCtor == null) {
 128                                 var s_SICtorParamTypes = new Type[] { typeof(SerializationInfo), typeof(StreamingContext) };
 129
 130                                 m_serializationCtor = GetConstructor(
 131                                         BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
 132                                         null,
 133                                         CallingConventions.Any,
 134                                         s_SICtorParamTypes,
 135                                         null) as RuntimeConstructorInfo;
 136                         }
 137
 138                         return m_serializationCtor;
 139                 }
 140
 141                 internal Object CreateInstanceSlow(bool publicOnly, bool skipCheckThis, bool fillCache, ref StackCrawlMark stackMark)
 142                 {
 143                         bool bNeedSecurityCheck = true;
 144                         bool bCanBeCached = false;
 145                         bool bSecurityCheckOff = false;
 146
 147                         if (!skipCheckThis)
 148                                 CreateInstanceCheckThis();
 149
 150                         if (!fillCache)
 151                                 bSecurityCheckOff = true;
 152
 153                         return CreateInstanceMono (!publicOnly);
 154                 }
 155
 156                 object CreateInstanceMono (bool nonPublic)
 157                 {
 158                         var ctor = GetDefaultConstructor ();
 159                         if (!nonPublic && ctor != null && !ctor.IsPublic) {
 160                                 ctor = null;
 161                         }
 162
 163                         if (ctor == null) {
 164                                 Type elementType = this.GetRootElementType();
 165                                 if (ReferenceEquals (elementType, typeof (TypedReference)) || ReferenceEquals (elementType, typeof (RuntimeArgumentHandle)))
 166                                         throw new NotSupportedException (Environment.GetResourceString ("NotSupported_ContainsStackPtr"));
 167
 168                                 if (IsValueType)
 169                                         return CreateInstanceInternal (this);
 170
 171                                 throw new MissingMethodException (Locale.GetText ("Default constructor not found for type " + FullName));
 172                         }
 173
 174                         // TODO: .net does more checks in unmanaged land in RuntimeTypeHandle::CreateInstance
 175                         if (IsAbstract) {
 176                                 throw new MissingMethodException (Locale.GetText ("Cannot create an abstract class '{0}'.", FullName));
 177                         }
 178
 179                         return ctor.InternalInvoke (null, null);
 180                 }
 181
 182                 internal Object CheckValue (Object value, Binder binder, CultureInfo culture, BindingFlags invokeAttr)
 183                 {
 184                         bool failed = false;
 185                         var res = TryConvertToType (value, ref failed);
 186                         if (!failed)
 187                                 return res;
 188
 189                         if ((invokeAttr & BindingFlags.ExactBinding) == BindingFlags.ExactBinding)
 190                                 throw new ArgumentException(String.Format(CultureInfo.CurrentUICulture, Environment.GetResourceString("Arg_ObjObjEx"), value.GetType(), this));
 191
 192                         if (binder != null && binder != Type.DefaultBinder)
 193                                 return binder.ChangeType (value, this, culture);
 194
 195                         throw new ArgumentException(String.Format(CultureInfo.CurrentUICulture, Environment.GetResourceString("Arg_ObjObjEx"), value.GetType(), this));
 196                 }
 197
 198                 object TryConvertToType (object value, ref bool failed)
 199                 {
 200                         if (IsInstanceOfType (value)) {
 201                                 return value;
 202                         }
 203
 204                         if (IsByRef) {
 205                                 var elementType = GetElementType ();
 206                                 if (value == null || elementType.IsInstanceOfType (value)) {
 207                                         return value;
 208                                 }
 209                         }
 210
 211                         if (value == null)
 212                                 return value;
 213
 214                         if (IsEnum) {
 215                                 var type = Enum.GetUnderlyingType (this);
 216                                 if (type == value.GetType ())
 217                                         return value;
 218                                 var res = IsConvertibleToPrimitiveType (value, this);
 219                                 if (res != null)
 220                                         return res;
 221                         } else if (IsPrimitive) {
 222                                 var res = IsConvertibleToPrimitiveType (value, this);
 223                                 if (res != null)
 224                                         return res;
 225                         } else if (IsPointer) {
 226                                 var vtype = value.GetType ();
 227                                 if (vtype == typeof (IntPtr) || vtype == typeof (UIntPtr))
 228                                         return value;
 229                         }
 230
 231                         failed = true;
 232                         return null;
 233                 }
 234
 235                 // Binder uses some incompatible conversion rules. For example
 236                 // int value cannot be used with decimal parameter but in other
 237                 // ways it's more flexible than normal convertor, for example
 238                 // long value can be used with int based enum
 239                 static object IsConvertibleToPrimitiveType (object value, Type targetType)
 240                 {
 241                         var type = value.GetType ();
 242                         if (type.IsEnum) {
 243                                 type = Enum.GetUnderlyingType (type);
 244                                 if (type == targetType)
 245                                         return value;
 246                         }
 247
 248                         var from = Type.GetTypeCode (type);
 249                         var to = Type.GetTypeCode (targetType);
 250
 251                         switch (to) {
 252                                 case TypeCode.Char:
 253                                         switch (from) {
 254                                                 case TypeCode.Byte:
 255                                                         return (Char) (Byte) value;
 256                                                 case TypeCode.UInt16:
 257                                                         return value;
 258                                         }
 259                                         break;
 260                                 case TypeCode.Int16:
 261                                         switch (from) {
 262                                                 case TypeCode.Byte:
 263                                                         return (Int16) (Byte) value;
 264                                                 case TypeCode.SByte:
 265                                                         return (Int16) (SByte) value;
 266                                         }
 267                                         break;
 268                                 case TypeCode.UInt16:
 269                                         switch (from) {
 270                                                 case TypeCode.Byte:
 271                                                         return (UInt16) (Byte) value;
 272                                                 case TypeCode.Char:
 273                                                         return value;
 274                                         }
 275                                         break;
 276                                 case TypeCode.Int32:
 277                                         switch (from) {
 278                                                 case TypeCode.Byte:
 279                                                         return (Int32) (Byte) value;
 280                                                 case TypeCode.SByte:
 281                                                         return (Int32) (SByte) value;
 282                                                 case TypeCode.Char:
 283                                                         return (Int32) (Char) value;
 284                                                 case TypeCode.Int16:
 285                                                         return (Int32) (Int16) value;
 286                                                 case TypeCode.UInt16:
 287                                                         return (Int32) (UInt16) value;
 288                                         }
 289                                         break;
 290                                 case TypeCode.UInt32:
 291                                         switch (from) {
 292                                                 case TypeCode.Byte:
 293                                                         return (UInt32) (Byte) value;
 294                                                 case TypeCode.Char:
 295                                                         return (UInt32) (Char) value;
 296                                                 case TypeCode.UInt16:
 297                                                         return (UInt32) (UInt16) value;
 298                                         }
 299                                         break;
 300                                 case TypeCode.Int64:
 301                                         switch (from) {
 302                                                 case TypeCode.Byte:
 303                                                         return (Int64) (Byte) value;
 304                                                 case TypeCode.SByte:
 305                                                         return (Int64) (SByte) value;
 306                                                 case TypeCode.Int16:
 307                                                         return (Int64) (Int16) value;
 308                                                 case TypeCode.Char:
 309                                                         return (Int64) (Char) value;
 310                                                 case TypeCode.UInt16:
 311                                                         return (Int64) (UInt16) value;
 312                                                 case TypeCode.Int32:
 313                                                         return (Int64) (Int32) value;
 314                                                 case TypeCode.UInt32:
 315                                                         return (Int64) (UInt32) value;
 316                                         }
 317                                         break;
 318                                 case TypeCode.UInt64:
 319                                         switch (from) {
 320                                                 case TypeCode.Byte:
 321                                                         return (UInt64) (Byte) value;
 322                                                 case TypeCode.Char:
 323                                                         return (UInt64) (Char) value;
 324                                                 case TypeCode.UInt16:
 325                                                         return (UInt64) (UInt16) value;
 326                                                 case TypeCode.UInt32:
 327                                                         return (UInt64) (UInt32) value;
 328                                         }
 329                                         break;
 330                                 case TypeCode.Single:
 331                                         switch (from) {
 332                                                 case TypeCode.Byte:
 333                                                         return (Single) (Byte) value;
 334                                                 case TypeCode.SByte:
 335                                                         return (Single) (SByte) value;
 336                                                 case TypeCode.Int16:
 337                                                         return (Single) (Int16) value;
 338                                                 case TypeCode.Char:
 339                                                         return (Single) (Char) value;
 340                                                 case TypeCode.UInt16:
 341                                                         return (Single) (UInt16) value;
 342                                                 case TypeCode.Int32:
 343                                                         return (Single) (Int32) value;
 344                                                 case TypeCode.UInt32:
 345                                                         return (Single) (UInt32) value;
 346                                                 case TypeCode.Int64:
 347                                                         return (Single) (Int64) value;
 348                                                 case TypeCode.UInt64:
 349                                                         return (Single) (UInt64) value;
 350                                         }
 351                                         break;
 352                                 case TypeCode.Double:
 353                                         switch (from) {
 354                                                 case TypeCode.Byte:
 355                                                         return (Double) (Byte) value;
 356                                                 case TypeCode.SByte:
 357                                                         return (Double) (SByte) value;
 358                                                 case TypeCode.Char:
 359                                                         return (Double) (Char) value;
 360                                                 case TypeCode.Int16:
 361                                                         return (Double) (Int16) value;
 362                                                 case TypeCode.UInt16:
 363                                                         return (Double) (UInt16) value;
 364                                                 case TypeCode.Int32:
 365                                                         return (Double) (Int32) value;
 366                                                 case TypeCode.UInt32:
 367                                                         return (Double) (UInt32) value;
 368                                                 case TypeCode.Int64:
 369                                                         return (Double) (Int64) value;
 370                                                 case TypeCode.UInt64:
 371                                                         return (Double) (UInt64) value;
 372                                                 case TypeCode.Single:
 373                                                         return (Double) (Single) value;
 374                                         }
 375                                         break;
 376                         }
 377
 378                         // Everything else is rejected
 379                         return null;
 380                 }
 381
 382                 string GetCachedName (TypeNameKind kind)
 383                 {
 384                         switch (kind) {
 385                         case TypeNameKind.SerializationName:
 386                                 return ToString ();
 387                         default:
 388                                 throw new NotImplementedException ();
 389                         }
 390                 }
 391
 392                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 393                 extern Type make_array_type (int rank);
 394
 395                 public override Type MakeArrayType ()
 396                 {
 397                         return make_array_type (0);
 398                 }
 399
 400                 public override Type MakeArrayType (int rank)
 401                 {
 402                         if (rank < 1 || rank > 255)
 403                                 throw new IndexOutOfRangeException ();
 404                         return make_array_type (rank);
 405                 }
 406
 407                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 408                 extern Type make_byref_type ();
 409
 410                 public override Type MakeByRefType ()
 411                 {
 412                         if (IsByRef)
 413                                 throw new TypeLoadException ("Can not call MakeByRefType on a ByRef type");
 414                         return make_byref_type ();
 415                 }
 416
 417                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 418                 static extern Type MakePointerType (Type type);
 419
 420                 public override Type MakePointerType ()
 421                 {
 422                         return MakePointerType (this);
 423                 }
 424
 425                 public override StructLayoutAttribute StructLayoutAttribute {
 426                         get {
 427                                 return StructLayoutAttribute.GetCustomAttribute (this);
 428                         }
 429                 }
 430
 431                 public override bool ContainsGenericParameters {
 432                         get {
 433                                 if (IsGenericParameter)
 434                                         return true;
 435
 436                                 if (IsGenericType) {
 437                                         foreach (Type arg in GetGenericArguments ())
 438                                                 if (arg.ContainsGenericParameters)
 439                                                         return true;
 440                                 }
 441
 442                                 if (HasElementType)
 443                                         return GetElementType ().ContainsGenericParameters;
 444
 445                                 return false;
 446                         }
 447                 }
 448
 449                 public override Type[] GetGenericParameterConstraints()
 450                 {
 451                         if (!IsGenericParameter)
 452                                 throw new InvalidOperationException(Environment.GetResourceString("Arg_NotGenericParameter"));
 453                         Contract.EndContractBlock();
 454
 455                         Type[] constraints = GetGenericParameterConstraints_impl ();
 456
 457                         if (constraints == null)
 458                                 constraints = EmptyArray<Type>.Value;
 459
 460                         return constraints;
 461                 }
 462
 463                 internal static object CreateInstanceForAnotherGenericParameter (Type genericType, RuntimeType genericArgument)
 464                 {
 465                         var gt = (RuntimeType) MakeGenericType (genericType, new Type [] { genericArgument });
 466                         var ctor = gt.GetDefaultConstructor ();
 467                         return ctor.InternalInvoke (null, null);
 468                 }
 469
 470                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 471                 static extern Type MakeGenericType (Type gt, Type [] types);
 472
 473                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 474                 internal extern RuntimeMethodInfo[] GetMethodsByName (string name, BindingFlags bindingAttr, bool ignoreCase, Type reflected_type);
 475
 476                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 477                 extern RuntimePropertyInfo[] GetPropertiesByName (string name, BindingFlags bindingAttr, bool icase, Type reflected_type);
 478
 479                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 480                 extern RuntimeConstructorInfo[] GetConstructors_internal (BindingFlags bindingAttr, Type reflected_type);
 481
 482                 public override InterfaceMapping GetInterfaceMap (Type ifaceType)
 483                 {
 484                         if (IsGenericParameter)
 485                                 throw new InvalidOperationException(Environment.GetResourceString("Arg_GenericParameter"));
 486
 487                         if ((object)ifaceType == null)
 488                                 throw new ArgumentNullException("ifaceType");
 489                         Contract.EndContractBlock();
 490
 491                         RuntimeType ifaceRtType = ifaceType as RuntimeType;
 492
 493                         if (ifaceRtType == null)
 494                                 throw new ArgumentException(Environment.GetResourceString("Argument_MustBeRuntimeType"), "ifaceType");
 495
 496                         InterfaceMapping res;
 497                         if (!ifaceType.IsInterface)
 498                                 throw new ArgumentException (Locale.GetText ("Argument must be an interface."), "ifaceType");
 499                         if (IsInterface)
 500                                 throw new ArgumentException ("'this' type cannot be an interface itself");
 501                         res.TargetType = this;
 502                         res.InterfaceType = ifaceType;
 503                         GetInterfaceMapData (this, ifaceType, out res.TargetMethods, out res.InterfaceMethods);
 504                         if (res.TargetMethods == null)
 505                                 throw new ArgumentException (Locale.GetText ("Interface not found"), "ifaceType");
 506
 507                         return res;
 508                 }
 509
 510                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 511                 static extern void GetInterfaceMapData (Type t, Type iface, out MethodInfo[] targets, out MethodInfo[] methods);
 512
 513                 public override Guid GUID {
 514                         get {
 515                                 object[] att = GetCustomAttributes(typeof(System.Runtime.InteropServices.GuidAttribute), true);
 516                                 if (att.Length == 0)
 517                                         return Guid.Empty;
 518                                 return new Guid(((System.Runtime.InteropServices.GuidAttribute)att[0]).Value);
 519                         }
 520                 }
 521
 522                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 523                 internal extern void GetPacking (out int packing, out int size);
 524
 525 #if MONO_COM
 526                 private static Dictionary<Guid, Type> clsid_types;
 527                 private static AssemblyBuilder clsid_assemblybuilder;
 528 #endif
 529
 530                 internal static Type GetTypeFromCLSIDImpl(Guid clsid, String server, bool throwOnError)
 531                 {
 532 #if MONO_COM
 533                         Type result;
 534
 535                         if (clsid_types == null)
 536                         {
 537                                 Dictionary<Guid, Type> new_clsid_types = new Dictionary<Guid, Type> ();
 538                                 Interlocked.CompareExchange<Dictionary<Guid, Type>>(
 539                                         ref clsid_types, new_clsid_types, null);
 540                         }
 541
 542                         lock (clsid_types) {
 543                                 if (clsid_types.TryGetValue(clsid, out result))
 544                                         return result;
 545
 546                                 if (clsid_assemblybuilder == null)
 547                                 {
 548                                         AssemblyName assemblyname = new AssemblyName ();
 549                                         assemblyname.Name = "GetTypeFromCLSIDDummyAssembly";
 550                                         clsid_assemblybuilder = AppDomain.CurrentDomain.DefineDynamicAssembly (
 551                                                 assemblyname, AssemblyBuilderAccess.Run);
 552                                 }
 553                                 ModuleBuilder modulebuilder = clsid_assemblybuilder.DefineDynamicModule (
 554                                         clsid.ToString ());
 555
 556                                 TypeBuilder typebuilder = modulebuilder.DefineType ("System.__ComObject",
 557                                         TypeAttributes.Public | TypeAttributes.Class, typeof(System.__ComObject));
 558
 559                                 Type[] guidattrtypes = new Type[] { typeof(string) };
 560
 561                                 CustomAttributeBuilder customattr = new CustomAttributeBuilder (
 562                                         typeof(GuidAttribute).GetConstructor (guidattrtypes),
 563                                         new object[] { clsid.ToString () });
 564
 565                                 typebuilder.SetCustomAttribute (customattr);
 566
 567                                 customattr = new CustomAttributeBuilder (
 568                                         typeof(ComImportAttribute).GetConstructor (EmptyTypes),
 569                                         new object[0] {});
 570
 571                                 typebuilder.SetCustomAttribute (customattr);
 572
 573                                 result = typebuilder.CreateType ();
 574
 575                                 clsid_types.Add(clsid, result);
 576
 577                                 return result;
 578                         }
 579 #else
 580                         throw new NotImplementedException ("Unmanaged activation removed");
 581 #endif
 582                 }
 583
 584                 protected override TypeCode GetTypeCodeImpl ()
 585                 {
 586                         return GetTypeCodeImplInternal (this);
 587                 }
 588
 589                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 590                 extern static TypeCode GetTypeCodeImplInternal (Type type);
 591
 592                 internal static Type GetTypeFromProgIDImpl(String progID, String server, bool throwOnError)
 593                 {
 594                         throw new NotImplementedException ("Unmanaged activation is not supported");
 595                 }
 596
 597                 public override string ToString()
 598                 {
 599                         return getFullName (false, false);
 600                 }
 601
 602                 bool IsGenericCOMObjectImpl ()
 603                 {
 604                         return false;
 605                 }
 606
 607                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 608                 static extern object CreateInstanceInternal (Type type);
 609
 610                 public extern override MethodBase DeclaringMethod {
 611                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 612                         get;
 613                 }
 614
 615                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 616                 internal extern string getFullName(bool full_name, bool assembly_qualified);
 617
 618                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 619                 extern Type[] GetGenericArgumentsInternal (bool runtimeArray);
 620
 621                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 622                 extern GenericParameterAttributes GetGenericParameterAttributes ();
 623
 624                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 625                 extern Type[] GetGenericParameterConstraints_impl ();
 626
 627                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 628                 extern int GetGenericParameterPosition ();
 629
 630                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 631                 extern RuntimeEventInfo[] GetEvents_internal (string name, BindingFlags bindingAttr, Type reflected_type);
 632
 633                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 634                 extern RuntimeFieldInfo[] GetFields_internal (string name, BindingFlags bindingAttr, Type reflected_type);
 635
 636                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 637                 public extern override Type[] GetInterfaces();
 638
 639                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 640                 extern RuntimeType[] GetNestedTypes_internal (string name, BindingFlags bindingAttr);
 641
 642                 public override string AssemblyQualifiedName {
 643                         get {
 644                                 return getFullName (true, true);
 645                         }
 646                 }
 647
 648                 public extern override Type DeclaringType {
 649                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 650                         get;
 651                 }
 652
 653                 public extern override string Name {
 654                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 655                         get;
 656                 }
 657
 658                 public extern override string Namespace {
 659                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 660                         get;
 661                 }
 662
 663 #if MOBILE
 664                 static int get_core_clr_security_level ()
 665                 {
 666                         return 1;
 667                 }
 668 #else
 669                 //seclevel { transparent = 0, safe-critical = 1, critical = 2}
 670                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 671                 public extern int get_core_clr_security_level ();
 672
 673                 public override bool IsSecurityTransparent {
 674                         get { return get_core_clr_security_level () == 0; }
 675                 }
 676
 677                 public override bool IsSecurityCritical {
 678                         get { return get_core_clr_security_level () > 0; }
 679                 }
 680
 681                 public override bool IsSecuritySafeCritical {
 682                         get { return get_core_clr_security_level () == 1; }
 683                 }
 684 #endif
 685
 686                 public override int GetHashCode()
 687                 {
 688                         Type t = UnderlyingSystemType;
 689                         if (t != null && t != this)
 690                                 return t.GetHashCode ();
 691                         return (int)_impl.Value;
 692                 }
 693
 694                 public override string FullName {
 695                         get {
 696                                 string fullName;
 697                                 // This doesn't need locking
 698                                 if (type_info == null)
 699                                         type_info = new MonoTypeInfo ();
 700                                 if ((fullName = type_info.full_name) == null)
 701                                         fullName = type_info.full_name = getFullName (true, false);
 702
 703                                 return fullName;
 704                         }
 705                 }
 706
 707                 internal override bool IsUserType {
 708                         get {
 709                                 return false;
 710                         }
 711                 }
 712         }
 713 }