mcs/tools/linker/Mono.Linker.Steps/MarkStep.cs

   1 //
   2 // MarkStep.cs
   3 //
   4 // Author:
   5 //   Jb Evain (jbevain@gmail.com)
   6 //
   7 // (C) 2006 Jb Evain
   8 // (C) 2007 Novell, Inc.
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Collections;
  32 using Mono.Cecil;
  33 using Mono.Cecil.Cil;
  34
  35 namespace Mono.Linker.Steps {
  36
  37         public class MarkStep : IStep {
  38
  39                 LinkContext _context;
  40                 Queue _methods;
  41                 ArrayList _virtual_methods;
  42
  43                 public MarkStep ()
  44                 {
  45                         _methods = new Queue ();
  46                         _virtual_methods = new ArrayList ();
  47                 }
  48
  49                 public void Process (LinkContext context)
  50                 {
  51                         _context = context;
  52
  53                         Initialize ();
  54                         Process ();
  55                 }
  56
  57                 void Initialize ()
  58                 {
  59                         foreach (AssemblyDefinition assembly in _context.GetAssemblies ())
  60                                 InitializeAssembly (assembly);
  61                 }
  62
  63                 protected virtual void InitializeAssembly (AssemblyDefinition assembly)
  64                 {
  65                         MarkAssembly (assembly);
  66                         foreach (TypeDefinition type in assembly.MainModule.Types) {
  67                                 if (!Annotations.IsMarked (type))
  68                                         continue;
  69
  70                                 InitializeType (type);
  71                         }
  72                 }
  73
  74                 void InitializeType (TypeDefinition type)
  75                 {
  76                         MarkType (type);
  77
  78                         if (type.HasFields)
  79                                 InitializeFields (type);
  80                         if (type.HasMethods)
  81                                 InitializeMethods (type.Methods);
  82                         if (type.HasConstructors)
  83                                 InitializeMethods (type.Constructors);
  84                 }
  85
  86                 void InitializeFields (TypeDefinition type)
  87                 {
  88                         foreach (FieldDefinition field in type.Fields)
  89                                 if (Annotations.IsMarked (field))
  90                                         MarkField (field);
  91                 }
  92
  93                 void InitializeMethods (ICollection methods)
  94                 {
  95                         foreach (MethodDefinition method in methods)
  96                                 if (Annotations.IsMarked (method))
  97                                         EnqueueMethod (method);
  98                 }
  99
 100                 void Process ()
 101                 {
 102                         if (QueueIsEmpty ())
 103                                 throw new InvalidOperationException ("No entry methods");
 104
 105                         while (!QueueIsEmpty ()) {
 106                                 ProcessQueue ();
 107                                 ProcessVirtualMethods ();
 108                         }
 109                 }
 110
 111                 void ProcessQueue ()
 112                 {
 113                         while (!QueueIsEmpty ()) {
 114                                 MethodDefinition method = (MethodDefinition) _methods.Dequeue ();
 115                                 ProcessMethod (method);
 116                         }
 117                 }
 118
 119                 bool QueueIsEmpty ()
 120                 {
 121                         return _methods.Count == 0;
 122                 }
 123
 124                 protected virtual void EnqueueMethod (MethodDefinition method)
 125                 {
 126                         _methods.Enqueue (method);
 127                 }
 128
 129                 void ProcessVirtualMethods ()
 130                 {
 131                         foreach (MethodDefinition method in _virtual_methods)
 132                                 ProcessVirtualMethod (method);
 133                 }
 134
 135                 void ProcessVirtualMethod (MethodDefinition method)
 136                 {
 137                         IList overrides = Annotations.GetOverrides (method);
 138                         if (overrides == null)
 139                                 return;
 140
 141                         foreach (MethodDefinition @override in overrides)
 142                                 ProcessOverride (@override);
 143                 }
 144
 145                 void ProcessOverride (MethodDefinition method)
 146                 {
 147                         if (!Annotations.IsMarked (method.DeclaringType))
 148                                 return;
 149
 150                         if (Annotations.IsProcessed (method))
 151                                 return;
 152
 153                         if (Annotations.IsMarked (method))
 154                                 return;
 155
 156                         MarkMethod (method);
 157                         ProcessVirtualMethod (method);
 158                 }
 159
 160                 void MarkMethodBody (MethodBody body)
 161                 {
 162                         foreach (VariableDefinition var in body.Variables)
 163                                 MarkType (var.VariableType);
 164
 165                         foreach (ExceptionHandler eh in body.ExceptionHandlers)
 166                                 if (eh.Type == ExceptionHandlerType.Catch)
 167                                         MarkType (eh.CatchType);
 168
 169                         foreach (Instruction instruction in body.Instructions)
 170                                 MarkInstruction (instruction);
 171                 }
 172
 173                 void MarkMarshalSpec (IHasMarshalSpec spec)
 174                 {
 175                         CustomMarshalerSpec marshaler = spec.MarshalSpec as CustomMarshalerSpec;
 176                         if (marshaler == null)
 177                                 return;
 178
 179                         TypeDefinition type = _context.GetType (marshaler.ManagedType);
 180                         MarkType (type);
 181                 }
 182
 183                 void MarkCustomAttributes (ICustomAttributeProvider provider)
 184                 {
 185                         if (!provider.HasCustomAttributes)
 186                                 return;
 187
 188                         foreach (CustomAttribute ca in provider.CustomAttributes)
 189                                 MarkCustomAttribute (ca);
 190                 }
 191
 192                 void MarkCustomAttribute (CustomAttribute ca)
 193                 {
 194                         MarkMethod (ca.Constructor);
 195
 196                         if (!ca.Resolved) {
 197                                 ca = ca.Clone ();
 198                                 ca.Resolve ();
 199                         }
 200
 201                         if (!ca.Resolved)
 202                                 return;
 203
 204                         MarkCustomAttributeParameters (ca);
 205
 206                         TypeReference constructor_type = ca.Constructor.DeclaringType;
 207                         TypeDefinition type = constructor_type.Resolve ();
 208                         if (type == null)
 209                                 throw new ResolutionException (constructor_type);
 210
 211                         MarkCustomAttributeProperties (ca, type);
 212                         MarkCustomAttributeFields (ca, type);
 213                 }
 214
 215                 void MarkCustomAttributeProperties (CustomAttribute ca, TypeDefinition attribute)
 216                 {
 217                         foreach (DictionaryEntry de in ca.Properties) {
 218                                 string propertyname = (string) de.Key;
 219
 220                                 PropertyDefinition property = GetProperty (attribute, propertyname);
 221                                 if (property != null)
 222                                         MarkMethod (property.SetMethod);
 223
 224                                 TypeReference propType = ca.GetPropertyType (propertyname);
 225                                 MarkIfType (propType, de.Value);
 226                         }
 227                 }
 228
 229                 PropertyDefinition GetProperty (TypeDefinition type, string propertyname)
 230                 {
 231                         while (type != null) {
 232                                 PropertyDefinition [] properties = type.Properties.GetProperties (propertyname);
 233                                 if (properties != null && properties.Length != 0 && properties [0].SetMethod != null)
 234                                         return properties [0];
 235
 236                                 type = type.BaseType != null ? ResolveTypeDefinition (type.BaseType) : null;
 237                         }
 238
 239                         return null;
 240                 }
 241
 242                 void MarkCustomAttributeFields (CustomAttribute ca, TypeDefinition attribute)
 243                 {
 244                         foreach (DictionaryEntry de in ca.Fields) {
 245                                 string fieldname = (string) de.Key;
 246
 247                                 FieldDefinition field = GetField (attribute, fieldname);
 248                                 if (field != null)
 249                                         MarkField (field);
 250
 251                                 TypeReference fieldType = ca.GetFieldType (fieldname);
 252                                 MarkIfType (fieldType, de.Value);
 253                         }
 254                 }
 255
 256                 FieldDefinition GetField (TypeDefinition type, string fieldname)
 257                 {
 258                         while (type != null) {
 259                                 FieldDefinition field = type.Fields.GetField (fieldname);
 260                                 if (field != null)
 261                                         return field;
 262
 263                                 type = type.BaseType != null ? ResolveTypeDefinition (type.BaseType) : null;
 264                         }
 265
 266                         return null;
 267                 }
 268
 269                 void MarkCustomAttributeParameters (CustomAttribute ca)
 270                 {
 271                         for (int i = 0; i < ca.Constructor.Parameters.Count; i++) {
 272                                 ParameterDefinition param = ca.Constructor.Parameters [i];
 273                                 MarkIfType (param.ParameterType, ca.ConstructorParameters [i]);
 274                         }
 275                 }
 276
 277                 void MarkIfType (TypeReference slotType, object value)
 278                 {
 279                         if (slotType.FullName != Constants.Type)
 280                                 return;
 281
 282                         TypeDefinition type = _context.GetType ((string) value);
 283
 284                         MarkType (type);
 285                 }
 286
 287                 protected static bool CheckProcessed (IAnnotationProvider provider)
 288                 {
 289                         if (Annotations.IsProcessed (provider))
 290                                 return true;
 291
 292                         Annotations.Processed (provider);
 293                         return false;
 294                 }
 295
 296                 void MarkAssembly (AssemblyDefinition assembly)
 297                 {
 298                         if (CheckProcessed (assembly))
 299                                 return;
 300
 301                         MarkCustomAttributes (assembly);
 302
 303                         foreach (ModuleDefinition module in assembly.Modules)
 304                                 MarkCustomAttributes (module);
 305                 }
 306
 307                 void MarkField (FieldReference reference)
 308                 {
 309 //                      if (IgnoreScope (reference.DeclaringType.Scope))
 310 //                              return;
 311
 312                         FieldDefinition field = ResolveFieldDefinition (reference);
 313
 314                         if (field == null)
 315                                 throw new ResolutionException (reference);
 316
 317                         if (CheckProcessed (field))
 318                                 return;
 319
 320                         MarkType (field.DeclaringType);
 321                         MarkType (field.FieldType);
 322                         MarkCustomAttributes (field);
 323                         MarkMarshalSpec (field);
 324
 325                         Annotations.Mark (field);
 326                 }
 327
 328                 protected virtual bool IgnoreScope (IMetadataScope scope)
 329                 {
 330                         AssemblyDefinition assembly = ResolveAssembly (scope);
 331                         return Annotations.GetAction (assembly) != AssemblyAction.Link;
 332                 }
 333
 334                 FieldDefinition ResolveFieldDefinition (FieldReference field)
 335                 {
 336                         FieldDefinition fd = field as FieldDefinition;
 337                         if (fd == null)
 338                                 fd = field.Resolve ();
 339
 340                         return fd;
 341                 }
 342
 343                 void MarkScope (IMetadataScope scope)
 344                 {
 345                         IAnnotationProvider provider = scope as IAnnotationProvider;
 346                         if (provider == null)
 347                                 return;
 348
 349                         Annotations.Mark (provider);
 350                 }
 351
 352                 protected virtual void MarkType (TypeReference reference)
 353                 {
 354                         if (reference == null)
 355                                 return;
 356
 357                         reference = GetOriginalType (reference);
 358
 359                         if (reference is GenericParameter)
 360                                 return;
 361
 362 //                      if (IgnoreScope (reference.Scope))
 363 //                              return;
 364
 365                         TypeDefinition type = ResolveTypeDefinition (reference);
 366
 367                         if (type == null)
 368                                 throw new ResolutionException (reference);
 369
 370                         if (CheckProcessed (type))
 371                                 return;
 372
 373                         MarkScope (type.Scope);
 374                         MarkType (type.BaseType);
 375                         MarkType (type.DeclaringType);
 376                         MarkCustomAttributes (type);
 377
 378                         if (IsMulticastDelegate (type)) {
 379                                 MarkMethodCollection (type.Constructors);
 380                                 MarkMethodCollection (type.Methods);
 381                         }
 382
 383                         if (IsSerializable (type) && type.HasConstructors) {
 384                                 MarkMethodsIf (type.Constructors, IsDefaultConstructorPredicate);
 385                                 MarkMethodsIf (type.Constructors, IsSpecialSerializationConstructorPredicate);
 386                         }
 387
 388                         MarkTypeSpecialCustomAttributes (type);
 389
 390                         MarkGenericParameterProvider (type);
 391
 392                         if (type.IsValueType)
 393                                 MarkFields (type);
 394
 395                         if (type.HasInterfaces) {
 396                                 foreach (TypeReference iface in type.Interfaces)
 397                                         MarkType (iface);
 398                         }
 399
 400                         if (type.HasMethods)
 401                                 MarkMethodsIf (type.Methods, IsVirtualAndHasPreservedParent);
 402
 403                         if (type.HasConstructors)
 404                                 MarkMethodsIf (type.Constructors, IsStaticConstructorPredicate);
 405
 406                         Annotations.Mark (type);
 407
 408                         ApplyPreserveInfo (type);
 409                 }
 410
 411                 void MarkTypeSpecialCustomAttributes (TypeDefinition type)
 412                 {
 413                         if (!type.HasCustomAttributes)
 414                                 return;
 415
 416                         foreach (CustomAttribute attribute in type.CustomAttributes) {
 417                                 switch (attribute.Constructor.DeclaringType.FullName) {
 418                                 case "System.Xml.Serialization.XmlSchemaProviderAttribute":
 419                                         MarkXmlSchemaProvider (type, attribute);
 420                                         break;
 421                                 }
 422                         }
 423                 }
 424
 425                 void MarkMethodSpecialCustomAttributes (MethodDefinition method)
 426                 {
 427                         if (!method.HasCustomAttributes)
 428                                 return;
 429
 430                         foreach (CustomAttribute attribute in method.CustomAttributes) {
 431                                 switch (attribute.Constructor.DeclaringType.FullName) {
 432                                 case "System.Web.Services.Protocols.SoapHeaderAttribute":
 433                                         MarkSoapHeader (method, attribute);
 434                                         break;
 435                                 }
 436                         }
 437                 }
 438
 439                 void MarkXmlSchemaProvider (TypeDefinition type, CustomAttribute attribute)
 440                 {
 441                         string method_name;
 442                         if (!TryGetStringArgument (attribute, out method_name))
 443                                 return;
 444
 445                         MarkNamedMethod (type, method_name);
 446                 }
 447
 448                 static bool TryGetStringArgument (CustomAttribute attribute, out string argument)
 449                 {
 450                         argument = null;
 451
 452                         if (!attribute.Resolved || attribute.ConstructorParameters.Count < 1)
 453                                 return false;
 454
 455                         argument = attribute.ConstructorParameters [0] as string;
 456
 457                         return argument != null;
 458                 }
 459
 460                 void MarkNamedMethod (TypeDefinition type, string method_name)
 461                 {
 462                         if (!type.HasMethods)
 463                                 return;
 464
 465                         foreach (MethodDefinition method in type.Methods) {
 466                                 if (method.Name != method_name)
 467                                         continue;
 468
 469                                 MarkMethod (method);
 470                         }
 471                 }
 472
 473                 void MarkSoapHeader (MethodDefinition method, CustomAttribute attribute)
 474                 {
 475                         string member_name;
 476                         if (!TryGetStringArgument (attribute, out member_name))
 477                                 return;
 478
 479                         MarkNamedField (method.DeclaringType, member_name);
 480                         MarkNamedProperty (method.DeclaringType, member_name);
 481                 }
 482
 483                 void MarkNamedField (TypeDefinition type, string field_name)
 484                 {
 485                         if (!type.HasFields)
 486                                 return;
 487
 488                         foreach (FieldDefinition field in type.Fields) {
 489                                 if (field.Name != field_name)
 490                                         continue;
 491
 492                                 MarkField (field);
 493                         }
 494                 }
 495
 496                 void MarkNamedProperty (TypeDefinition type, string property_name)
 497                 {
 498                         if (!type.HasProperties)
 499                                 return;
 500
 501                         foreach (PropertyDefinition property in type.Properties) {
 502                                 if (property.Name != property_name)
 503                                         continue;
 504
 505                                 MarkMethod (property.GetMethod);
 506                                 MarkMethod (property.SetMethod);
 507                         }
 508                 }
 509
 510                 void MarkGenericParameterProvider (IGenericParameterProvider provider)
 511                 {
 512                         if (!provider.HasGenericParameters)
 513                                 return;
 514
 515                         foreach (GenericParameter parameter in provider.GenericParameters)
 516                                 MarkGenericParameter (parameter);
 517                 }
 518
 519                 void MarkGenericParameter (GenericParameter parameter)
 520                 {
 521                         MarkCustomAttributes (parameter);
 522                         foreach (TypeReference constraint in parameter.Constraints)
 523                                 MarkType (constraint);
 524                 }
 525
 526                 bool IsVirtualAndHasPreservedParent (MethodDefinition method)
 527                 {
 528                         if (!method.IsVirtual)
 529                                 return false;
 530
 531                         var base_list = Annotations.GetBaseMethods (method);
 532                         if (base_list == null)
 533                                 return false;
 534
 535                         foreach (MethodDefinition @base in base_list) {
 536                                 if (IgnoreScope (@base.DeclaringType.Scope))
 537                                         return true;
 538
 539                                 if (IsVirtualAndHasPreservedParent (@base))
 540                                         return true;
 541                         }
 542
 543                         return false;
 544                 }
 545
 546                 static MethodPredicate IsSpecialSerializationConstructorPredicate = new MethodPredicate (IsSpecialSerializationConstructor);
 547
 548                 static bool IsSpecialSerializationConstructor (MethodDefinition method)
 549                 {
 550                         if (!IsConstructor (method))
 551                                 return false;
 552
 553                         ParameterDefinitionCollection parameters = method.Parameters;
 554                         if (parameters.Count != 2)
 555                                 return false;
 556
 557                         return parameters [0].ParameterType.Name == "SerializationInfo" &&
 558                                 parameters [1].ParameterType.Name == "StreamingContext";
 559                 }
 560
 561                 delegate bool MethodPredicate (MethodDefinition method);
 562
 563                 void MarkMethodsIf (ICollection methods, MethodPredicate predicate)
 564                 {
 565                         foreach (MethodDefinition method in methods)
 566                                 if (predicate (method))
 567                                         MarkMethod (method);
 568                 }
 569
 570                 static MethodPredicate IsDefaultConstructorPredicate = new MethodPredicate (IsDefaultConstructor);
 571
 572                 static bool IsDefaultConstructor (MethodDefinition method)
 573                 {
 574                         return IsConstructor (method) && method.Parameters.Count == 0;
 575                 }
 576
 577                 static bool IsConstructor (MethodDefinition method)
 578                 {
 579                         return method.Name == MethodDefinition.Ctor && method.IsSpecialName &&
 580                                 method.IsRuntimeSpecialName;
 581                 }
 582
 583                 static MethodPredicate IsStaticConstructorPredicate = new MethodPredicate (IsStaticConstructor);
 584
 585                 static bool IsStaticConstructor (MethodDefinition method)
 586                 {
 587                         return method.Name == MethodDefinition.Cctor && method.IsSpecialName &&
 588                                 method.IsRuntimeSpecialName;
 589                 }
 590
 591                 static bool IsSerializable (TypeDefinition td)
 592                 {
 593                         return (td.Attributes & TypeAttributes.Serializable) != 0;
 594                 }
 595
 596                 static bool IsMulticastDelegate (TypeDefinition td)
 597                 {
 598                         return td.BaseType != null && td.BaseType.FullName == "System.MulticastDelegate";
 599                 }
 600
 601                 TypeDefinition ResolveTypeDefinition (TypeReference type)
 602                 {
 603                         TypeDefinition td = type as TypeDefinition;
 604                         if (td == null)
 605                                 td = type.Resolve ();
 606
 607                         return td;
 608                 }
 609
 610                 protected TypeReference GetOriginalType (TypeReference type)
 611                 {
 612                         while (type is TypeSpecification) {
 613                                 GenericInstanceType git = type as GenericInstanceType;
 614                                 if (git != null)
 615                                         MarkGenericArguments (git);
 616
 617                                 ModType mod = type as ModType;
 618                                 if (mod != null)
 619                                         MarkModifierType (mod);
 620
 621                                 type = ((TypeSpecification) type).ElementType;
 622                         }
 623
 624                         return type;
 625                 }
 626
 627                 void MarkModifierType (ModType mod)
 628                 {
 629                         MarkType (mod.ModifierType);
 630                 }
 631
 632                 void MarkGenericArguments (IGenericInstance instance)
 633                 {
 634                         foreach (TypeReference argument in instance.GenericArguments)
 635                                 MarkType (argument);
 636
 637                         MarkGenericArgumentConstructors (instance);
 638                 }
 639
 640                 void MarkGenericArgumentConstructors (IGenericInstance instance)
 641                 {
 642                         var arguments = instance.GenericArguments;
 643
 644                         var generic_element = GetGenericProviderFromInstance (instance);
 645                         if (generic_element == null)
 646                                 return;
 647
 648                         var parameters = generic_element.GenericParameters;
 649
 650                         if (arguments.Count != parameters.Count)
 651                                 return;
 652
 653                         for (int i = 0; i < arguments.Count; i++) {
 654                                 var argument = arguments [i];
 655                                 var parameter = parameters [i];
 656
 657                                 if (!parameter.HasDefaultConstructorConstraint)
 658                                         continue;
 659
 660                                 var argument_definition = ResolveTypeDefinition (argument);
 661                                 if (argument_definition == null)
 662                                         continue;
 663
 664                                 MarkMethodsIf (argument_definition.Constructors, ctor => !ctor.IsStatic && !ctor.HasParameters);
 665                         }
 666                 }
 667
 668                 IGenericParameterProvider GetGenericProviderFromInstance (IGenericInstance instance)
 669                 {
 670                         var method = instance as GenericInstanceMethod;
 671                         if (method != null)
 672                                 return method.ElementMethod;
 673
 674                         var type = instance as GenericInstanceType;
 675                         if (type != null)
 676                                 return type.ElementType;
 677
 678                         return null;
 679                 }
 680
 681                 void ApplyPreserveInfo (TypeDefinition type)
 682                 {
 683                         ApplyPreserveMethods (type);
 684
 685                         if (!Annotations.IsPreserved (type))
 686                                 return;
 687
 688                         switch (Annotations.GetPreserve (type)) {
 689                         case TypePreserve.All:
 690                                 MarkFields (type);
 691                                 MarkMethods (type);
 692                                 break;
 693                         case TypePreserve.Fields:
 694                                 MarkFields (type);
 695                                 break;
 696                         case TypePreserve.Methods:
 697                                 MarkMethods (type);
 698                                 break;
 699                         }
 700                 }
 701
 702                 void ApplyPreserveMethods (TypeDefinition type)
 703                 {
 704                         var list = Annotations.GetPreservedMethods (type);
 705                         if (list == null)
 706                                 return;
 707
 708                         foreach (MethodDefinition method in list)
 709                                 MarkMethod (method);
 710                 }
 711
 712                 void MarkFields (TypeDefinition type)
 713                 {
 714                         if (!type.HasFields)
 715                                 return;
 716
 717                         foreach (FieldDefinition field in type.Fields)
 718                                 MarkField (field);
 719                 }
 720
 721                 void MarkMethods (TypeDefinition type)
 722                 {
 723                         if (type.HasMethods)
 724                                 MarkMethodCollection (type.Methods);
 725                         if (type.HasConstructors)
 726                                 MarkMethodCollection (type.Constructors);
 727                 }
 728
 729                 void MarkMethodCollection (IEnumerable methods)
 730                 {
 731                         foreach (MethodDefinition method in methods)
 732                                 MarkMethod (method);
 733                 }
 734
 735                 void MarkMethod (MethodReference reference)
 736                 {
 737                         reference = GetOriginalMethod (reference);
 738
 739                         if (reference.DeclaringType is ArrayType)
 740                                 return;
 741
 742 //                      if (IgnoreScope (reference.DeclaringType.Scope))
 743 //                              return;
 744
 745                         MethodDefinition method = ResolveMethodDefinition (reference);
 746
 747                         if (method == null)
 748                                 throw new ResolutionException (reference);
 749
 750                         if (Annotations.GetAction (method) == MethodAction.Nothing)
 751                                 Annotations.SetAction (method, MethodAction.Parse);
 752
 753                         EnqueueMethod (method);
 754                 }
 755
 756                 AssemblyDefinition ResolveAssembly (IMetadataScope scope)
 757                 {
 758                         AssemblyDefinition assembly = _context.Resolve (scope);
 759                         MarkAssembly (assembly);
 760                         return assembly;
 761                 }
 762
 763                 MethodReference GetOriginalMethod (MethodReference method)
 764                 {
 765                         while (method is MethodSpecification) {
 766                                 GenericInstanceMethod gim = method as GenericInstanceMethod;
 767                                 if (gim != null)
 768                                         MarkGenericArguments (gim);
 769
 770                                 method = ((MethodSpecification) method).ElementMethod;
 771                         }
 772
 773                         return method;
 774                 }
 775
 776                 MethodDefinition ResolveMethodDefinition (MethodReference method)
 777                 {
 778                         MethodDefinition md = method as MethodDefinition;
 779                         if (md == null)
 780                                 md = method.Resolve ();
 781
 782                         return md;
 783                 }
 784
 785                 void ProcessMethod (MethodDefinition method)
 786                 {
 787                         if (CheckProcessed (method))
 788                                 return;
 789
 790                         MarkType (method.DeclaringType);
 791                         MarkCustomAttributes (method);
 792
 793                         MarkGenericParameterProvider (method);
 794
 795                         if (IsPropertyMethod (method))
 796                                 MarkProperty (GetProperty (method));
 797                         else if (IsEventMethod (method))
 798                                 MarkEvent (GetEvent (method));
 799
 800                         if (method.HasParameters) {
 801                                 foreach (ParameterDefinition pd in method.Parameters) {
 802                                         MarkType (pd.ParameterType);
 803                                         MarkCustomAttributes (pd);
 804                                         MarkMarshalSpec (pd);
 805                                 }
 806                         }
 807
 808                         if (method.HasOverrides) {
 809                                 foreach (MethodReference ov in method.Overrides)
 810                                         MarkMethod (ov);
 811                         }
 812
 813                         MarkMethodSpecialCustomAttributes (method);
 814
 815                         if (method.IsVirtual)
 816                                 _virtual_methods.Add (method);
 817
 818                         MarkBaseMethods (method);
 819
 820                         MarkType (method.ReturnType.ReturnType);
 821                         MarkCustomAttributes (method.ReturnType);
 822                         MarkMarshalSpec (method.ReturnType);
 823
 824                         if (ShouldParseMethodBody (method))
 825                                 MarkMethodBody (method.Body);
 826
 827                         Annotations.Mark (method);
 828                 }
 829
 830                 void MarkBaseMethods (MethodDefinition method)
 831                 {
 832                         IList base_methods = Annotations.GetBaseMethods (method);
 833                         if (base_methods == null)
 834                                 return;
 835
 836                         foreach (MethodDefinition base_method in base_methods) {
 837                                 MarkMethod (base_method);
 838                                 MarkBaseMethods (base_method);
 839                         }
 840                 }
 841
 842                 bool ShouldParseMethodBody (MethodDefinition method)
 843                 {
 844                         if (!method.HasBody)
 845                                 return false;
 846
 847                         AssemblyDefinition assembly = ResolveAssembly (method.DeclaringType.Scope);
 848                         return (Annotations.GetAction (method) == MethodAction.ForceParse ||
 849                                 (Annotations.GetAction (assembly) == AssemblyAction.Link && Annotations.GetAction (method) == MethodAction.Parse));
 850                 }
 851
 852                 static bool IsPropertyMethod (MethodDefinition md)
 853                 {
 854                         return (md.SemanticsAttributes & MethodSemanticsAttributes.Getter) != 0 ||
 855                                 (md.SemanticsAttributes & MethodSemanticsAttributes.Setter) != 0;
 856                 }
 857
 858                 static bool IsEventMethod (MethodDefinition md)
 859                 {
 860                         return (md.SemanticsAttributes & MethodSemanticsAttributes.AddOn) != 0 ||
 861                                 (md.SemanticsAttributes & MethodSemanticsAttributes.Fire) != 0 ||
 862                                 (md.SemanticsAttributes & MethodSemanticsAttributes.RemoveOn) != 0;
 863                 }
 864
 865                 static PropertyDefinition GetProperty (MethodDefinition md)
 866                 {
 867                         TypeDefinition declaringType = (TypeDefinition) md.DeclaringType;
 868                         foreach (PropertyDefinition prop in declaringType.Properties)
 869                                 if (prop.GetMethod == md || prop.SetMethod == md)
 870                                         return prop;
 871
 872                         return null;
 873                 }
 874
 875                 static EventDefinition GetEvent (MethodDefinition md)
 876                 {
 877                         TypeDefinition declaringType = (TypeDefinition) md.DeclaringType;
 878                         foreach (EventDefinition evt in declaringType.Events)
 879                                 if (evt.AddMethod == md || evt.InvokeMethod == md || evt.RemoveMethod == md)
 880                                         return evt;
 881
 882                         return null;
 883                 }
 884
 885                 void MarkProperty (PropertyDefinition prop)
 886                 {
 887                         MarkCustomAttributes (prop);
 888                 }
 889
 890                 void MarkEvent (EventDefinition evt)
 891                 {
 892                         MarkCustomAttributes (evt);
 893                         MarkMethodIfNotNull (evt.AddMethod);
 894                         MarkMethodIfNotNull (evt.InvokeMethod);
 895                         MarkMethodIfNotNull (evt.RemoveMethod);
 896                 }
 897
 898                 void MarkMethodIfNotNull (MethodReference method)
 899                 {
 900                         if (method == null)
 901                                 return;
 902
 903                         MarkMethod (method);
 904                 }
 905
 906                 void MarkInstruction (Instruction instruction)
 907                 {
 908                         switch (instruction.OpCode.OperandType) {
 909                         case OperandType.InlineField:
 910                                 MarkField ((FieldReference) instruction.Operand);
 911                                 break;
 912                         case OperandType.InlineMethod:
 913                                 MarkMethod ((MethodReference) instruction.Operand);
 914                                 break;
 915                         case OperandType.InlineTok:
 916                                 object token = instruction.Operand;
 917                                 if (token is TypeReference)
 918                                         MarkType ((TypeReference) token);
 919                                 else if (token is MethodReference)
 920                                         MarkMethod ((MethodReference) token);
 921                                 else
 922                                         MarkField ((FieldReference) token);
 923                                 break;
 924                         case OperandType.InlineType:
 925                                 MarkType ((TypeReference) instruction.Operand);
 926                                 break;
 927                         default:
 928                                 break;
 929                         }
 930                 }
 931         }
 932 }