mcs/class/corlib/System.Reflection/MonoGenericClass.cs

   1 //
   2 // System.Reflection.MonoGenericClass
   3 //
   4 // Sean MacIsaac (macisaac@ximian.com)
   5 // Paolo Molaro (lupus@ximian.com)
   6 // Patrik Torstensson (patrik.torstensson@labs2.com)
   7 //
   8 // (C) 2001 Ximian, Inc.
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 #if !FULL_AOT_RUNTIME
  35 using System.Reflection;
  36 using System.Reflection.Emit;
  37 using System.Collections;
  38 using System.Runtime.CompilerServices;
  39 using System.Globalization;
  40 using System.Runtime.Serialization;
  41 using System.Text;
  42 using System.Runtime.InteropServices;
  43
  44 namespace System.Reflection
  45 {
  46         /*
  47          * MonoGenericClass represents an instantiation of a generic TypeBuilder. MS
  48          * calls this class TypeBuilderInstantiation (a much better name). MS returns
  49          * NotImplementedException for many of the methods but we can't do that as gmcs
  50          * depends on them.
  51          */
  52         [StructLayout (LayoutKind.Sequential)]
  53         sealed class MonoGenericClass :
  54 #if NET_4_5
  55                 TypeInfo
  56 #else
  57                 Type
  58 #endif
  59         {
  60                 #region Keep in sync with object-internals.h
  61 #pragma warning disable 649
  62                 internal Type generic_type;
  63                 Type[] type_arguments;
  64                 bool initialized;
  65 #pragma warning restore 649
  66                 #endregion
  67
  68                 Hashtable fields, ctors, methods;
  69
  70                 internal MonoGenericClass ()
  71                 {
  72                         // this should not be used
  73                         throw new InvalidOperationException ();
  74                 }
  75
  76                 internal MonoGenericClass (Type tb, Type[] args)
  77                 {
  78                         this.generic_type = tb;
  79                         this.type_arguments = args;
  80                         /*
  81                         This is a temporary hack until we can fix the rest of the runtime
  82                         to properly handle this class to be a complete UT.
  83
  84                         We must not regisrer this with the runtime after the type is created
  85                         otherwise created_type.MakeGenericType will return an instance of MonoGenericClass,
  86                         which is very very broken.
  87                         */
  88                         if (tb is TypeBuilder && !(tb as TypeBuilder).is_created)
  89                                 register_with_runtime (this);
  90
  91                 }
  92
  93                 internal override Type InternalResolve ()
  94                 {
  95                         Type gtd = generic_type.InternalResolve ();
  96                         Type[] args = new Type [type_arguments.Length];
  97                         for (int i = 0; i < type_arguments.Length; ++i)
  98                                 args [i] = type_arguments [i].InternalResolve ();
  99                         return gtd.MakeGenericType (args);
 100                 }
 101
 102                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 103                 extern void initialize (FieldInfo[] fields);
 104
 105                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 106                 internal static extern void register_with_runtime (Type type);
 107
 108                 internal bool IsCreated {
 109                         get {
 110                                 TypeBuilder tb = generic_type as TypeBuilder;
 111                                 return tb != null ? tb.is_created : true;
 112                         }
 113                 }
 114
 115                 private const BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic |
 116                 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
 117
 118                 void initialize ()
 119                 {
 120                         if (initialized)
 121                                 return;
 122
 123                         MonoGenericClass parent = GetParentType () as MonoGenericClass;
 124                         if (parent != null)
 125                                 parent.initialize ();
 126
 127                         initialize (generic_type.GetFields (flags));
 128
 129                         initialized = true;
 130                 }
 131
 132                 Type GetParentType ()
 133                 {
 134                         return InflateType (generic_type.BaseType);
 135                 }
 136
 137                 internal Type InflateType (Type type)
 138                 {
 139                         return InflateType (type, type_arguments, null);
 140                 }
 141
 142                 internal Type InflateType (Type type, Type[] method_args)
 143                 {
 144                         return InflateType (type, type_arguments, method_args);
 145                 }
 146
 147                 internal static Type InflateType (Type type, Type[] type_args, Type[] method_args)
 148                 {
 149                         if (type == null)
 150                                 return null;
 151                         if (!type.IsGenericParameter && !type.ContainsGenericParameters)
 152                                 return type;
 153                         if (type.IsGenericParameter) {
 154                                 if (type.DeclaringMethod == null)
 155                                         return type_args == null ? type : type_args [type.GenericParameterPosition];
 156                                 return method_args == null ? type : method_args [type.GenericParameterPosition];
 157                         }
 158                         if (type.IsPointer)
 159                                 return InflateType (type.GetElementType (), type_args, method_args).MakePointerType ();
 160                         if (type.IsByRef)
 161                                 return InflateType (type.GetElementType (), type_args, method_args).MakeByRefType ();
 162                         if (type.IsArray) {
 163                                 if (type.GetArrayRank () > 1)
 164                                         return InflateType (type.GetElementType (), type_args, method_args).MakeArrayType (type.GetArrayRank ());
 165
 166                                 if (type.ToString ().EndsWith ("[*]", StringComparison.Ordinal)) /*FIXME, the reflection API doesn't offer a way around this*/
 167                                         return InflateType (type.GetElementType (), type_args, method_args).MakeArrayType (1);
 168                                 return InflateType (type.GetElementType (), type_args, method_args).MakeArrayType ();
 169                         }
 170
 171                         Type[] args = type.GetGenericArguments ();
 172                         for (int i = 0; i < args.Length; ++i)
 173                                 args [i] = InflateType (args [i], type_args, method_args);
 174
 175                         Type gtd = type.IsGenericTypeDefinition ? type : type.GetGenericTypeDefinition ();
 176                         return gtd.MakeGenericType (args);
 177                 }
 178
 179                 public override Type BaseType {
 180                         get { return generic_type.BaseType; }
 181                 }
 182
 183                 public override Type[] GetInterfaces ()
 184                 {
 185                         throw new NotSupportedException ();
 186                 }
 187
 188                 protected override bool IsValueTypeImpl ()
 189                 {
 190                         return generic_type.IsValueType;
 191                 }
 192
 193                 internal override MethodInfo GetMethod (MethodInfo fromNoninstanciated)
 194                 {
 195                         initialize ();
 196
 197                         if (methods == null)
 198                                 methods = new Hashtable ();
 199                         if (!methods.ContainsKey (fromNoninstanciated))
 200                                 methods [fromNoninstanciated] = new MethodOnTypeBuilderInst (this, fromNoninstanciated);
 201                         return (MethodInfo)methods [fromNoninstanciated];
 202                 }
 203
 204                 internal override ConstructorInfo GetConstructor (ConstructorInfo fromNoninstanciated)
 205                 {
 206                         initialize ();
 207
 208                         if (ctors == null)
 209                                 ctors = new Hashtable ();
 210                         if (!ctors.ContainsKey (fromNoninstanciated))
 211                                 ctors [fromNoninstanciated] = new ConstructorOnTypeBuilderInst (this, fromNoninstanciated);
 212                         return (ConstructorInfo)ctors [fromNoninstanciated];
 213                 }
 214
 215                 internal override FieldInfo GetField (FieldInfo fromNoninstanciated)
 216                 {
 217                         initialize ();
 218                         if (fields == null)
 219                                 fields = new Hashtable ();
 220                         if (!fields.ContainsKey (fromNoninstanciated))
 221                                 fields [fromNoninstanciated] = new FieldOnTypeBuilderInst (this, fromNoninstanciated);
 222                         return (FieldInfo)fields [fromNoninstanciated];
 223                 }
 224
 225                 public override MethodInfo[] GetMethods (BindingFlags bf)
 226                 {
 227                         throw new NotSupportedException ();
 228                 }
 229
 230                 public override ConstructorInfo[] GetConstructors (BindingFlags bf)
 231                 {
 232                         throw new NotSupportedException ();
 233                 }
 234
 235                 public override FieldInfo[] GetFields (BindingFlags bf)
 236                 {
 237                         throw new NotSupportedException ();
 238                 }
 239
 240                 public override PropertyInfo[] GetProperties (BindingFlags bf)
 241                 {
 242                         throw new NotSupportedException ();
 243                 }
 244
 245                 public override EventInfo[] GetEvents (BindingFlags bf)
 246                 {
 247                         throw new NotSupportedException ();
 248                 }
 249
 250                 public override Type[] GetNestedTypes (BindingFlags bf)
 251                 {
 252                         throw new NotSupportedException ();
 253                 }
 254
 255                 public override bool IsAssignableFrom (Type c)
 256                 {
 257                         throw new NotSupportedException ();
 258                 }
 259
 260                 public override Type UnderlyingSystemType {
 261                         get { return this; }
 262                 }
 263
 264                 public override Assembly Assembly {
 265                         get { return generic_type.Assembly; }
 266                 }
 267
 268                 public override Module Module {
 269                         get { return generic_type.Module; }
 270                 }
 271
 272                 public override string Name {
 273                         get { return generic_type.Name; }
 274                 }
 275
 276                 public override string Namespace {
 277                         get { return generic_type.Namespace; }
 278                 }
 279
 280                 public override string FullName {
 281                         get { return format_name (true, false); }
 282                 }
 283
 284                 public override string AssemblyQualifiedName {
 285                         get { return format_name (true, true); }
 286                 }
 287
 288                 public override Guid GUID {
 289                         get { throw new NotSupportedException (); }
 290                 }
 291
 292                 string format_name (bool full_name, bool assembly_qualified)
 293                 {
 294                         StringBuilder sb = new StringBuilder (generic_type.FullName);
 295
 296                         sb.Append ("[");
 297                         for (int i = 0; i < type_arguments.Length; ++i) {
 298                                 if (i > 0)
 299                                         sb.Append (",");
 300
 301                                 string name;
 302                                 if (full_name) {
 303                                         string assemblyName = type_arguments [i].Assembly.FullName;
 304                                         name = type_arguments [i].FullName;
 305                                         if (name != null && assemblyName != null)
 306                                                 name = name + ", " + assemblyName;
 307                                 } else {
 308                                         name = type_arguments [i].ToString ();
 309                                 }
 310                                 if (name == null) {
 311                                         return null;
 312                                 }
 313                                 if (full_name)
 314                                         sb.Append ("[");
 315                                 sb.Append (name);
 316                                 if (full_name)
 317                                         sb.Append ("]");
 318                         }
 319                         sb.Append ("]");
 320                         if (assembly_qualified) {
 321                                 sb.Append (", ");
 322                                 sb.Append (generic_type.Assembly.FullName);
 323                         }
 324                         return sb.ToString ();
 325                 }
 326
 327                 public override string ToString ()
 328                 {
 329                         return format_name (false, false);
 330                 }
 331
 332                 public override Type GetGenericTypeDefinition ()
 333                 {
 334                         return generic_type;
 335                 }
 336
 337                 public override Type[] GetGenericArguments ()
 338                 {
 339                         Type[] ret = new Type [type_arguments.Length];
 340                         type_arguments.CopyTo (ret, 0);
 341                         return ret;
 342                 }
 343
 344                 public override bool ContainsGenericParameters {
 345                         get {
 346                                 foreach (Type t in type_arguments) {
 347                                         if (t.ContainsGenericParameters)
 348                                                 return true;
 349                                 }
 350                                 return false;
 351                         }
 352                 }
 353
 354                 public override bool IsGenericTypeDefinition {
 355                         get { return false; }
 356                 }
 357
 358                 public override bool IsGenericType {
 359                         get { return true; }
 360                 }
 361
 362                 public override Type DeclaringType {
 363                         get { return generic_type.DeclaringType; }
 364                 }
 365
 366                 public override RuntimeTypeHandle TypeHandle {
 367                         get {
 368                                 throw new NotSupportedException ();
 369                         }
 370                 }
 371
 372                 public override Type MakeArrayType ()
 373                 {
 374                         return new ArrayType (this, 0);
 375                 }
 376
 377                 public override Type MakeArrayType (int rank)
 378                 {
 379                         if (rank < 1)
 380                                 throw new IndexOutOfRangeException ();
 381                         return new ArrayType (this, rank);
 382                 }
 383
 384                 public override Type MakeByRefType ()
 385                 {
 386                         return new ByRefType (this);
 387                 }
 388
 389                 public override Type MakePointerType ()
 390                 {
 391                         return new PointerType (this);
 392                 }
 393
 394                 public override Type GetElementType ()
 395                 {
 396                         throw new NotSupportedException ();
 397                 }
 398
 399                 protected override bool HasElementTypeImpl ()
 400                 {
 401                         return false;
 402                 }
 403
 404                 protected override bool IsCOMObjectImpl ()
 405                 {
 406                         return false;
 407                 }
 408
 409                 protected override bool IsPrimitiveImpl ()
 410                 {
 411                         return false;
 412                 }
 413
 414                 protected override bool IsArrayImpl ()
 415                 {
 416                         return false;
 417                 }
 418
 419                 protected override bool IsByRefImpl ()
 420                 {
 421                         return false;
 422                 }
 423
 424                 protected override bool IsPointerImpl ()
 425                 {
 426                         return false;
 427                 }
 428
 429                 protected override TypeAttributes GetAttributeFlagsImpl ()
 430                 {
 431                         return generic_type.Attributes;
 432                 }
 433
 434                 //stuff that throws
 435                 public override Type GetInterface (string name, bool ignoreCase)
 436                 {
 437                         throw new NotSupportedException ();
 438                 }
 439
 440                 public override EventInfo GetEvent (string name, BindingFlags bindingAttr)
 441                 {
 442                         throw new NotSupportedException ();
 443                 }
 444
 445                 public override FieldInfo GetField( string name, BindingFlags bindingAttr)
 446                 {
 447                         throw new NotSupportedException ();
 448                 }
 449
 450                 public override MemberInfo[] GetMembers (BindingFlags bindingAttr)
 451                 {
 452                         throw new NotSupportedException ();
 453                 }
 454
 455                 public override Type GetNestedType (string name, BindingFlags bindingAttr)
 456                 {
 457                         throw new NotSupportedException ();
 458                 }
 459
 460                 public override object InvokeMember (string name, BindingFlags invokeAttr,
 461                                                      Binder binder, object target, object[] args,
 462                                                      ParameterModifier[] modifiers,
 463                                                      CultureInfo culture, string[] namedParameters)
 464                 {
 465                         throw new NotSupportedException ();
 466                 }
 467
 468                 protected override MethodInfo GetMethodImpl (string name, BindingFlags bindingAttr, Binder binder,
 469                                                              CallingConventions callConvention, Type[] types,
 470                                                              ParameterModifier[] modifiers)
 471                 {
 472                         throw new NotSupportedException ();
 473                 }
 474
 475                 protected override PropertyInfo GetPropertyImpl (string name, BindingFlags bindingAttr, Binder binder,
 476                                                                  Type returnType, Type[] types, ParameterModifier[] modifiers)
 477                 {
 478                         throw new NotSupportedException ();
 479                 }
 480
 481                 protected override ConstructorInfo GetConstructorImpl (BindingFlags bindingAttr,
 482                                                                        Binder binder,
 483                                                                        CallingConventions callConvention,
 484                                                                        Type[] types,
 485                                                                        ParameterModifier[] modifiers)
 486                 {
 487                         throw new NotSupportedException ();
 488                 }
 489
 490                 //MemberInfo
 491                 public override bool IsDefined (Type attributeType, bool inherit)
 492                 {
 493                         throw new NotSupportedException ();
 494                 }
 495
 496                 public override object [] GetCustomAttributes (bool inherit)
 497                 {
 498                         if (IsCreated)
 499                                 return generic_type.GetCustomAttributes (inherit);
 500                         throw new NotSupportedException ();
 501                 }
 502
 503                 public override object [] GetCustomAttributes (Type attributeType, bool inherit)
 504                 {
 505                         if (IsCreated)
 506                                 return generic_type.GetCustomAttributes (attributeType, inherit);
 507                         throw new NotSupportedException ();
 508                 }
 509
 510                 internal override bool IsUserType {
 511                         get {
 512                                 foreach (var t in type_arguments) {
 513                                         if (t.IsUserType)
 514                                                 return true;
 515                                 }
 516                                 return false;
 517                         }
 518                 }
 519
 520         }
 521 }
 522
 523 #endif