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 System.Linq;
  33
  34 using Mono.Cecil;
  35 using Mono.Cecil.Cil;
  36
  37 namespace Mono.Linker.Steps {
  38
  39         public class MarkStep : IStep {
  40
  41                 protected LinkContext _context;
  42                 protected Queue _methods;
  43                 protected ArrayList _virtual_methods;
  44
  45                 public AnnotationStore Annotations {
  46                         get { return _context.Annotations; }
  47                 }
  48
  49                 public MarkStep ()
  50                 {
  51                         _methods = new Queue ();
  52                         _virtual_methods = new ArrayList ();
  53                 }
  54
  55                 public virtual void Process (LinkContext context)
  56                 {
  57                         _context = context;
  58
  59                         Initialize ();
  60                         Process ();
  61                 }
  62
  63                 void Initialize ()
  64                 {
  65                         foreach (AssemblyDefinition assembly in _context.GetAssemblies ())
  66                                 InitializeAssembly (assembly);
  67                 }
  68
  69                 protected virtual void InitializeAssembly (AssemblyDefinition assembly)
  70                 {
  71                         MarkAssembly (assembly);
  72                         foreach (TypeDefinition type in assembly.MainModule.Types) {
  73                                 if (!Annotations.IsMarked (type))
  74                                         continue;
  75
  76                                 InitializeType (type);
  77                         }
  78                 }
  79
  80                 void InitializeType (TypeDefinition type)
  81                 {
  82                         MarkType (type);
  83
  84                         if (type.HasFields)
  85                                 InitializeFields (type);
  86                         if (type.HasMethods)
  87                                 InitializeMethods (type.Methods);
  88
  89                         if (type.HasNestedTypes) {
  90                                 foreach (var nested in type.NestedTypes) {
  91                                         if (Annotations.IsMarked (nested))
  92                                                 InitializeType (nested);
  93                                 }
  94                         }
  95                 }
  96
  97                 void InitializeFields (TypeDefinition type)
  98                 {
  99                         foreach (FieldDefinition field in type.Fields)
 100                                 if (Annotations.IsMarked (field))
 101                                         MarkField (field);
 102                 }
 103
 104                 void InitializeMethods (ICollection methods)
 105                 {
 106                         foreach (MethodDefinition method in methods)
 107                                 if (Annotations.IsMarked (method))
 108                                         EnqueueMethod (method);
 109                 }
 110
 111                 void Process ()
 112                 {
 113                         if (QueueIsEmpty ())
 114                                 throw new InvalidOperationException ("No entry methods");
 115
 116                         while (!QueueIsEmpty ()) {
 117                                 ProcessQueue ();
 118                                 ProcessVirtualMethods ();
 119                         }
 120                 }
 121
 122                 void ProcessQueue ()
 123                 {
 124                         while (!QueueIsEmpty ()) {
 125                                 MethodDefinition method = (MethodDefinition) _methods.Dequeue ();
 126                                 ProcessMethod (method);
 127                         }
 128                 }
 129
 130                 bool QueueIsEmpty ()
 131                 {
 132                         return _methods.Count == 0;
 133                 }
 134
 135                 protected virtual void EnqueueMethod (MethodDefinition method)
 136                 {
 137                         _methods.Enqueue (method);
 138                 }
 139
 140                 void ProcessVirtualMethods ()
 141                 {
 142                         foreach (MethodDefinition method in _virtual_methods)
 143                                 ProcessVirtualMethod (method);
 144                 }
 145
 146                 void ProcessVirtualMethod (MethodDefinition method)
 147                 {
 148                         IList overrides = Annotations.GetOverrides (method);
 149                         if (overrides == null)
 150                                 return;
 151
 152                         foreach (MethodDefinition @override in overrides)
 153                                 ProcessOverride (@override);
 154                 }
 155
 156                 void ProcessOverride (MethodDefinition method)
 157                 {
 158                         if (!Annotations.IsMarked (method.DeclaringType))
 159                                 return;
 160
 161                         if (Annotations.IsProcessed (method))
 162                                 return;
 163
 164                         if (Annotations.IsMarked (method))
 165                                 return;
 166
 167                         MarkMethod (method);
 168                         ProcessVirtualMethod (method);
 169                 }
 170
 171                 void MarkMarshalSpec (IMarshalInfoProvider spec)
 172                 {
 173                         if (!spec.HasMarshalInfo)
 174                                 return;
 175
 176                         var marshaler = spec.MarshalInfo as CustomMarshalInfo;
 177                         if (marshaler == null)
 178                                 return;
 179
 180                         MarkType (marshaler.ManagedType);
 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                 protected virtual void MarkCustomAttribute (CustomAttribute ca)
 193                 {
 194                         MarkMethod (ca.Constructor);
 195
 196                         MarkCustomAttributeArguments (ca);
 197
 198                         TypeReference constructor_type = ca.Constructor.DeclaringType;
 199                         TypeDefinition type = constructor_type.Resolve ();
 200                         if (type == null)
 201                                 throw new ResolutionException (constructor_type);
 202
 203                         MarkCustomAttributeProperties (ca, type);
 204                         MarkCustomAttributeFields (ca, type);
 205                 }
 206
 207                 void MarkCustomAttributeProperties (CustomAttribute ca, TypeDefinition attribute)
 208                 {
 209                         if (!ca.HasProperties)
 210                                 return;
 211
 212                         foreach (var named_argument in ca.Properties) {
 213                                 PropertyDefinition property = GetProperty (attribute, named_argument.Name);
 214                                 if (property != null)
 215                                         MarkMethod (property.SetMethod);
 216
 217                                 MarkIfType (named_argument.Argument);
 218                         }
 219                 }
 220
 221                 PropertyDefinition GetProperty (TypeDefinition type, string propertyname)
 222                 {
 223                         while (type != null) {
 224                                 PropertyDefinition property = type.Properties.FirstOrDefault (p => p.Name == propertyname);
 225                                 if (property != null)
 226                                         return property;
 227
 228                                 type = type.BaseType != null ? ResolveTypeDefinition (type.BaseType) : null;
 229                         }
 230
 231                         return null;
 232                 }
 233
 234                 void MarkCustomAttributeFields (CustomAttribute ca, TypeDefinition attribute)
 235                 {
 236                         if (!ca.HasFields)
 237                                 return;
 238
 239                         foreach (var named_argument in ca.Fields) {
 240                                 FieldDefinition field = GetField (attribute, named_argument.Name);
 241                                 if (field != null)
 242                                         MarkField (field);
 243
 244                                 MarkIfType (named_argument.Argument);
 245                         }
 246                 }
 247
 248                 FieldDefinition GetField (TypeDefinition type, string fieldname)
 249                 {
 250                         while (type != null) {
 251                                 FieldDefinition field = type.Fields.FirstOrDefault (f => f.Name == fieldname);
 252                                 if (field != null)
 253                                         return field;
 254
 255                                 type = type.BaseType != null ? ResolveTypeDefinition (type.BaseType) : null;
 256                         }
 257
 258                         return null;
 259                 }
 260
 261                 void MarkCustomAttributeArguments (CustomAttribute ca)
 262                 {
 263                         if (!ca.HasConstructorArguments)
 264                                 return;
 265
 266                         foreach (var argument in ca.ConstructorArguments)
 267                                 MarkIfType (argument);
 268                 }
 269
 270                 void MarkIfType (CustomAttributeArgument argument)
 271                 {
 272                         if (argument.Type.FullName != "System.Type")
 273                                 return;
 274
 275                         MarkType (argument.Type);
 276                         MarkType ((TypeReference) argument.Value);
 277                 }
 278
 279                 protected bool CheckProcessed (IMetadataTokenProvider provider)
 280                 {
 281                         if (Annotations.IsProcessed (provider))
 282                                 return true;
 283
 284                         Annotations.Processed (provider);
 285                         return false;
 286                 }
 287
 288                 void MarkAssembly (AssemblyDefinition assembly)
 289                 {
 290                         if (CheckProcessed (assembly))
 291                                 return;
 292
 293                         ProcessModule (assembly);
 294
 295                         MarkCustomAttributes (assembly);
 296
 297                         foreach (ModuleDefinition module in assembly.Modules)
 298                                 MarkCustomAttributes (module);
 299                 }
 300
 301                 void ProcessModule (AssemblyDefinition assembly)
 302                 {
 303                         // Pre-mark <Module> if there is any methods as they need to be executed
 304                         // at assembly load time
 305                         foreach (TypeDefinition type in assembly.MainModule.Types)
 306                         {
 307                                 if (type.Name == "<Module>" && type.HasMethods)
 308                                 {
 309                                         MarkType (type);
 310                                         break;
 311                                 }
 312                         }
 313                 }
 314
 315                 protected void MarkField (FieldReference reference)
 316                 {
 317 //                      if (IgnoreScope (reference.DeclaringType.Scope))
 318 //                              return;
 319
 320                         if (reference.DeclaringType is GenericInstanceType)
 321                                 MarkType (reference.DeclaringType);
 322
 323                         FieldDefinition field = ResolveFieldDefinition (reference);
 324
 325                         if (field == null)
 326                                 throw new ResolutionException (reference);
 327
 328                         if (CheckProcessed (field))
 329                                 return;
 330
 331                         MarkType (field.DeclaringType);
 332                         MarkType (field.FieldType);
 333                         MarkCustomAttributes (field);
 334                         MarkMarshalSpec (field);
 335
 336                         Annotations.Mark (field);
 337                 }
 338
 339                 protected virtual bool IgnoreScope (IMetadataScope scope)
 340                 {
 341                         AssemblyDefinition assembly = ResolveAssembly (scope);
 342                         return Annotations.GetAction (assembly) != AssemblyAction.Link;
 343                 }
 344
 345                 FieldDefinition ResolveFieldDefinition (FieldReference field)
 346                 {
 347                         FieldDefinition fd = field as FieldDefinition;
 348                         if (fd == null)
 349                                 fd = field.Resolve ();
 350
 351                         return fd;
 352                 }
 353
 354                 void MarkScope (IMetadataScope scope)
 355                 {
 356                         var provider = scope as IMetadataTokenProvider;
 357                         if (provider == null)
 358                                 return;
 359
 360                         Annotations.Mark (provider);
 361                 }
 362
 363                 protected virtual void MarkSerializable (TypeDefinition type)
 364                 {
 365                         MarkDefaultConstructor (type);
 366                         MarkMethodsIf (type.Methods, IsSpecialSerializationConstructorPredicate);
 367                 }
 368
 369                 protected virtual TypeDefinition MarkType (TypeReference reference)
 370                 {
 371                         if (reference == null)
 372                                 return null;
 373
 374                         reference = GetOriginalType (reference);
 375
 376                         if (reference is GenericParameter)
 377                                 return null;
 378
 379 //                      if (IgnoreScope (reference.Scope))
 380 //                              return;
 381
 382                         TypeDefinition type = ResolveTypeDefinition (reference);
 383
 384                         if (type == null)
 385                                 throw new ResolutionException (reference);
 386
 387                         if (CheckProcessed (type))
 388                                 return null;
 389
 390                         MarkScope (type.Scope);
 391                         MarkType (type.BaseType);
 392                         MarkType (type.DeclaringType);
 393                         MarkCustomAttributes (type);
 394
 395                         if (IsMulticastDelegate (type)) {
 396                                 MarkMethodCollection (type.Methods);
 397                         }
 398
 399                         if (IsSerializable (type))
 400                                 MarkSerializable (type);
 401
 402                         MarkTypeSpecialCustomAttributes (type);
 403
 404                         MarkGenericParameterProvider (type);
 405
 406                         // keep fields for value-types and for classes with LayoutKind.Sequential or Explicit
 407                         if (type.IsValueType || !type.IsAutoLayout)
 408                                 MarkFields (type, type.IsEnum);
 409
 410                         if (type.HasInterfaces) {
 411                                 foreach (TypeReference iface in type.Interfaces)
 412                                         MarkType (iface);
 413                         }
 414
 415                         if (type.HasMethods) {
 416                                 MarkMethodsIf (type.Methods, IsVirtualAndHasPreservedParent);
 417                                 MarkMethodsIf (type.Methods, IsStaticConstructorPredicate);
 418                         }
 419
 420                         Annotations.Mark (type);
 421
 422                         ApplyPreserveInfo (type);
 423
 424                         return type;
 425                 }
 426
 427                 void MarkTypeSpecialCustomAttributes (TypeDefinition type)
 428                 {
 429                         if (!type.HasCustomAttributes)
 430                                 return;
 431
 432                         foreach (CustomAttribute attribute in type.CustomAttributes) {
 433                                 switch (attribute.Constructor.DeclaringType.FullName) {
 434                                 case "System.Xml.Serialization.XmlSchemaProviderAttribute":
 435                                         MarkXmlSchemaProvider (type, attribute);
 436                                         break;
 437                                 }
 438                         }
 439                 }
 440
 441                 void MarkMethodSpecialCustomAttributes (MethodDefinition method)
 442                 {
 443                         if (!method.HasCustomAttributes)
 444                                 return;
 445
 446                         foreach (CustomAttribute attribute in method.CustomAttributes) {
 447                                 switch (attribute.Constructor.DeclaringType.FullName) {
 448                                 case "System.Web.Services.Protocols.SoapHeaderAttribute":
 449                                         MarkSoapHeader (method, attribute);
 450                                         break;
 451                                 }
 452                         }
 453                 }
 454
 455                 void MarkXmlSchemaProvider (TypeDefinition type, CustomAttribute attribute)
 456                 {
 457                         string method_name;
 458                         if (!TryGetStringArgument (attribute, out method_name))
 459                                 return;
 460
 461                         MarkNamedMethod (type, method_name);
 462                 }
 463
 464                 static bool TryGetStringArgument (CustomAttribute attribute, out string argument)
 465                 {
 466                         argument = null;
 467
 468                         if (attribute.ConstructorArguments.Count < 1)
 469                                 return false;
 470
 471                         argument = attribute.ConstructorArguments [0].Value as string;
 472
 473                         return argument != null;
 474                 }
 475
 476                 protected void MarkNamedMethod (TypeDefinition type, string method_name)
 477                 {
 478                         if (!type.HasMethods)
 479                                 return;
 480
 481                         foreach (MethodDefinition method in type.Methods) {
 482                                 if (method.Name != method_name)
 483                                         continue;
 484
 485                                 MarkMethod (method);
 486                         }
 487                 }
 488
 489                 void MarkSoapHeader (MethodDefinition method, CustomAttribute attribute)
 490                 {
 491                         string member_name;
 492                         if (!TryGetStringArgument (attribute, out member_name))
 493                                 return;
 494
 495                         MarkNamedField (method.DeclaringType, member_name);
 496                         MarkNamedProperty (method.DeclaringType, member_name);
 497                 }
 498
 499                 void MarkNamedField (TypeDefinition type, string field_name)
 500                 {
 501                         if (!type.HasFields)
 502                                 return;
 503
 504                         foreach (FieldDefinition field in type.Fields) {
 505                                 if (field.Name != field_name)
 506                                         continue;
 507
 508                                 MarkField (field);
 509                         }
 510                 }
 511
 512                 void MarkNamedProperty (TypeDefinition type, string property_name)
 513                 {
 514                         if (!type.HasProperties)
 515                                 return;
 516
 517                         foreach (PropertyDefinition property in type.Properties) {
 518                                 if (property.Name != property_name)
 519                                         continue;
 520
 521                                 MarkMethod (property.GetMethod);
 522                                 MarkMethod (property.SetMethod);
 523                         }
 524                 }
 525
 526                 void MarkGenericParameterProvider (IGenericParameterProvider provider)
 527                 {
 528                         if (!provider.HasGenericParameters)
 529                                 return;
 530
 531                         foreach (GenericParameter parameter in provider.GenericParameters)
 532                                 MarkGenericParameter (parameter);
 533                 }
 534
 535                 void MarkGenericParameter (GenericParameter parameter)
 536                 {
 537                         MarkCustomAttributes (parameter);
 538                         foreach (TypeReference constraint in parameter.Constraints)
 539                                 MarkType (constraint);
 540                 }
 541
 542                 bool IsVirtualAndHasPreservedParent (MethodDefinition method)
 543                 {
 544                         if (!method.IsVirtual)
 545                                 return false;
 546
 547                         var base_list = Annotations.GetBaseMethods (method);
 548                         if (base_list == null)
 549                                 return false;
 550
 551                         foreach (MethodDefinition @base in base_list) {
 552                                 if (IgnoreScope (@base.DeclaringType.Scope))
 553                                         return true;
 554
 555                                 if (IsVirtualAndHasPreservedParent (@base))
 556                                         return true;
 557                         }
 558
 559                         return false;
 560                 }
 561
 562                 static MethodPredicate IsSpecialSerializationConstructorPredicate = new MethodPredicate (IsSpecialSerializationConstructor);
 563
 564                 static bool IsSpecialSerializationConstructor (MethodDefinition method)
 565                 {
 566                         if (!IsConstructor (method))
 567                                 return false;
 568
 569                         var parameters = method.Parameters;
 570                         if (parameters.Count != 2)
 571                                 return false;
 572
 573                         return parameters [0].ParameterType.Name == "SerializationInfo" &&
 574                                 parameters [1].ParameterType.Name == "StreamingContext";
 575                 }
 576
 577                 delegate bool MethodPredicate (MethodDefinition method);
 578
 579                 void MarkMethodsIf (ICollection methods, MethodPredicate predicate)
 580                 {
 581                         foreach (MethodDefinition method in methods)
 582                                 if (predicate (method))
 583                                         MarkMethod (method);
 584                 }
 585
 586                 static MethodPredicate IsDefaultConstructorPredicate = new MethodPredicate (IsDefaultConstructor);
 587
 588                 static bool IsDefaultConstructor (MethodDefinition method)
 589                 {
 590                         return IsConstructor (method) && !method.HasParameters;
 591                 }
 592
 593                 static bool IsConstructor (MethodDefinition method)
 594                 {
 595                         return method.IsConstructor && !method.IsStatic;
 596                 }
 597
 598                 protected void MarkDefaultConstructor (TypeDefinition type)
 599                 {
 600                         if ((type == null) || !type.HasMethods)
 601                                 return;
 602
 603                         MarkMethodsIf (type.Methods, IsDefaultConstructorPredicate);
 604                 }
 605
 606                 static MethodPredicate IsStaticConstructorPredicate = new MethodPredicate (IsStaticConstructor);
 607
 608                 static bool IsStaticConstructor (MethodDefinition method)
 609                 {
 610                         return method.IsConstructor && method.IsStatic;
 611                 }
 612
 613                 static bool IsSerializable (TypeDefinition td)
 614                 {
 615                         return (td.Attributes & TypeAttributes.Serializable) != 0;
 616                 }
 617
 618                 static bool IsMulticastDelegate (TypeDefinition td)
 619                 {
 620                         return td.BaseType != null && td.BaseType.FullName == "System.MulticastDelegate";
 621                 }
 622
 623                 protected TypeDefinition ResolveTypeDefinition (TypeReference type)
 624                 {
 625                         TypeDefinition td = type as TypeDefinition;
 626                         if (td == null)
 627                                 td = type.Resolve ();
 628
 629                         return td;
 630                 }
 631
 632                 protected TypeReference GetOriginalType (TypeReference type)
 633                 {
 634                         while (type is TypeSpecification) {
 635                                 GenericInstanceType git = type as GenericInstanceType;
 636                                 if (git != null)
 637                                         MarkGenericArguments (git);
 638
 639                                 var mod = type as IModifierType;
 640                                 if (mod != null)
 641                                         MarkModifierType (mod);
 642
 643                                 type = ((TypeSpecification) type).ElementType;
 644                         }
 645
 646                         return type;
 647                 }
 648
 649                 void MarkModifierType (IModifierType mod)
 650                 {
 651                         MarkType (mod.ModifierType);
 652                 }
 653
 654                 void MarkGenericArguments (IGenericInstance instance)
 655                 {
 656                         foreach (TypeReference argument in instance.GenericArguments)
 657                                 MarkType (argument);
 658
 659                         MarkGenericArgumentConstructors (instance);
 660                 }
 661
 662                 void MarkGenericArgumentConstructors (IGenericInstance instance)
 663                 {
 664                         var arguments = instance.GenericArguments;
 665
 666                         var generic_element = GetGenericProviderFromInstance (instance);
 667                         if (generic_element == null)
 668                                 return;
 669
 670                         var parameters = generic_element.GenericParameters;
 671
 672                         if (arguments.Count != parameters.Count)
 673                                 return;
 674
 675                         for (int i = 0; i < arguments.Count; i++) {
 676                                 var argument = arguments [i];
 677                                 var parameter = parameters [i];
 678
 679                                 if (!parameter.HasDefaultConstructorConstraint)
 680                                         continue;
 681
 682                                 var argument_definition = ResolveTypeDefinition (argument);
 683                                 if (argument_definition == null)
 684                                         continue;
 685
 686                                 MarkMethodsIf (argument_definition.Methods, ctor => !ctor.IsStatic && !ctor.HasParameters);
 687                         }
 688                 }
 689
 690                 IGenericParameterProvider GetGenericProviderFromInstance (IGenericInstance instance)
 691                 {
 692                         var method = instance as GenericInstanceMethod;
 693                         if (method != null)
 694                                 return ResolveMethodDefinition (method.ElementMethod);
 695
 696                         var type = instance as GenericInstanceType;
 697                         if (type != null)
 698                                 return ResolveTypeDefinition (type.ElementType);
 699
 700                         return null;
 701                 }
 702
 703                 void ApplyPreserveInfo (TypeDefinition type)
 704                 {
 705                         ApplyPreserveMethods (type);
 706
 707                         if (!Annotations.IsPreserved (type))
 708                                 return;
 709
 710                         switch (Annotations.GetPreserve (type)) {
 711                         case TypePreserve.All:
 712                                 MarkFields (type, true);
 713                                 MarkMethods (type);
 714                                 break;
 715                         case TypePreserve.Fields:
 716                                 MarkFields (type, true);
 717                                 break;
 718                         case TypePreserve.Methods:
 719                                 MarkMethods (type);
 720                                 break;
 721                         }
 722                 }
 723
 724                 void ApplyPreserveMethods (TypeDefinition type)
 725                 {
 726                         var list = Annotations.GetPreservedMethods (type);
 727                         if (list == null)
 728                                 return;
 729
 730                         MarkMethodCollection (list);
 731                 }
 732
 733                 void ApplyPreserveMethods (MethodDefinition method)
 734                 {
 735                         var list = Annotations.GetPreservedMethods (method);
 736                         if (list == null)
 737                                 return;
 738
 739                         MarkMethodCollection (list);
 740                 }
 741
 742                 protected void MarkFields (TypeDefinition type, bool includeStatic)
 743                 {
 744                         if (!type.HasFields)
 745                                 return;
 746
 747                         foreach (FieldDefinition field in type.Fields) {
 748                                 if (!includeStatic && field.IsStatic)
 749                                         continue;
 750                                 MarkField (field);
 751                         }
 752                 }
 753
 754                 protected virtual void MarkMethods (TypeDefinition type)
 755                 {
 756                         if (type.HasMethods)
 757                                 MarkMethodCollection (type.Methods);
 758                 }
 759
 760                 void MarkMethodCollection (IEnumerable methods)
 761                 {
 762                         foreach (MethodDefinition method in methods)
 763                                 MarkMethod (method);
 764                 }
 765
 766                 protected virtual MethodDefinition MarkMethod (MethodReference reference)
 767                 {
 768                         reference = GetOriginalMethod (reference);
 769
 770                         if (reference.DeclaringType is ArrayType)
 771                                 return null;
 772
 773                         if (reference.DeclaringType is GenericInstanceType)
 774                                 MarkType (reference.DeclaringType);
 775
 776 //                      if (IgnoreScope (reference.DeclaringType.Scope))
 777 //                              return;
 778
 779                         MethodDefinition method = ResolveMethodDefinition (reference);
 780
 781                         if (method == null)
 782                                 throw new ResolutionException (reference);
 783
 784                         if (Annotations.GetAction (method) == MethodAction.Nothing)
 785                                 Annotations.SetAction (method, MethodAction.Parse);
 786
 787                         EnqueueMethod (method);
 788                         return method;
 789                 }
 790
 791                 AssemblyDefinition ResolveAssembly (IMetadataScope scope)
 792                 {
 793                         AssemblyDefinition assembly = _context.Resolve (scope);
 794                         MarkAssembly (assembly);
 795                         return assembly;
 796                 }
 797
 798                 protected MethodReference GetOriginalMethod (MethodReference method)
 799                 {
 800                         while (method is MethodSpecification) {
 801                                 GenericInstanceMethod gim = method as GenericInstanceMethod;
 802                                 if (gim != null)
 803                                         MarkGenericArguments (gim);
 804
 805                                 method = ((MethodSpecification) method).ElementMethod;
 806                         }
 807
 808                         return method;
 809                 }
 810
 811                 MethodDefinition ResolveMethodDefinition (MethodReference method)
 812                 {
 813                         MethodDefinition md = method as MethodDefinition;
 814                         if (md == null)
 815                                 md = method.Resolve ();
 816
 817                         return md;
 818                 }
 819
 820                 protected virtual void ProcessMethod (MethodDefinition method)
 821                 {
 822                         if (CheckProcessed (method))
 823                                 return;
 824
 825                         MarkType (method.DeclaringType);
 826                         MarkCustomAttributes (method);
 827
 828                         MarkGenericParameterProvider (method);
 829
 830                         if (IsPropertyMethod (method))
 831                                 MarkProperty (GetProperty (method));
 832                         else if (IsEventMethod (method))
 833                                 MarkEvent (GetEvent (method));
 834
 835                         if (method.HasParameters) {
 836                                 foreach (ParameterDefinition pd in method.Parameters) {
 837                                         MarkType (pd.ParameterType);
 838                                         MarkCustomAttributes (pd);
 839                                         MarkMarshalSpec (pd);
 840                                 }
 841                         }
 842
 843                         if (method.HasOverrides) {
 844                                 foreach (MethodReference ov in method.Overrides)
 845                                         MarkMethod (ov);
 846                         }
 847
 848                         MarkMethodSpecialCustomAttributes (method);
 849
 850                         if (method.IsVirtual)
 851                                 _virtual_methods.Add (method);
 852
 853                         MarkBaseMethods (method);
 854
 855                         MarkType (method.ReturnType);
 856                         MarkCustomAttributes (method.MethodReturnType);
 857                         MarkMarshalSpec (method.MethodReturnType);
 858
 859                         if (ShouldParseMethodBody (method))
 860                                 MarkMethodBody (method.Body);
 861
 862                         Annotations.Mark (method);
 863
 864                         ApplyPreserveMethods (method);
 865                 }
 866
 867                 void MarkBaseMethods (MethodDefinition method)
 868                 {
 869                         IList base_methods = Annotations.GetBaseMethods (method);
 870                         if (base_methods == null)
 871                                 return;
 872
 873                         foreach (MethodDefinition base_method in base_methods) {
 874                                 if (base_method.DeclaringType.IsInterface && !method.DeclaringType.IsInterface)
 875                                         continue;
 876
 877                                 MarkMethod (base_method);
 878                                 MarkBaseMethods (base_method);
 879                         }
 880                 }
 881
 882                 bool ShouldParseMethodBody (MethodDefinition method)
 883                 {
 884                         if (!method.HasBody)
 885                                 return false;
 886
 887                         AssemblyDefinition assembly = ResolveAssembly (method.DeclaringType.Scope);
 888                         return (Annotations.GetAction (method) == MethodAction.ForceParse ||
 889                                 (Annotations.GetAction (assembly) == AssemblyAction.Link && Annotations.GetAction (method) == MethodAction.Parse));
 890                 }
 891
 892                 static internal bool IsPropertyMethod (MethodDefinition md)
 893                 {
 894                         return (md.SemanticsAttributes & MethodSemanticsAttributes.Getter) != 0 ||
 895                                 (md.SemanticsAttributes & MethodSemanticsAttributes.Setter) != 0;
 896                 }
 897
 898                 static bool IsEventMethod (MethodDefinition md)
 899                 {
 900                         return (md.SemanticsAttributes & MethodSemanticsAttributes.AddOn) != 0 ||
 901                                 (md.SemanticsAttributes & MethodSemanticsAttributes.Fire) != 0 ||
 902                                 (md.SemanticsAttributes & MethodSemanticsAttributes.RemoveOn) != 0;
 903                 }
 904
 905                 static internal PropertyDefinition GetProperty (MethodDefinition md)
 906                 {
 907                         TypeDefinition declaringType = (TypeDefinition) md.DeclaringType;
 908                         foreach (PropertyDefinition prop in declaringType.Properties)
 909                                 if (prop.GetMethod == md || prop.SetMethod == md)
 910                                         return prop;
 911
 912                         return null;
 913                 }
 914
 915                 static EventDefinition GetEvent (MethodDefinition md)
 916                 {
 917                         TypeDefinition declaringType = (TypeDefinition) md.DeclaringType;
 918                         foreach (EventDefinition evt in declaringType.Events)
 919                                 if (evt.AddMethod == md || evt.InvokeMethod == md || evt.RemoveMethod == md)
 920                                         return evt;
 921
 922                         return null;
 923                 }
 924
 925                 protected void MarkProperty (PropertyDefinition prop)
 926                 {
 927                         MarkCustomAttributes (prop);
 928                 }
 929
 930                 protected void MarkEvent (EventDefinition evt)
 931                 {
 932                         MarkCustomAttributes (evt);
 933                         MarkMethodIfNotNull (evt.AddMethod);
 934                         MarkMethodIfNotNull (evt.InvokeMethod);
 935                         MarkMethodIfNotNull (evt.RemoveMethod);
 936                 }
 937
 938                 void MarkMethodIfNotNull (MethodReference method)
 939                 {
 940                         if (method == null)
 941                                 return;
 942
 943                         MarkMethod (method);
 944                 }
 945
 946                 protected virtual void MarkMethodBody (MethodBody body)
 947                 {
 948                         foreach (VariableDefinition var in body.Variables)
 949                                 MarkType (var.VariableType);
 950
 951                         foreach (ExceptionHandler eh in body.ExceptionHandlers)
 952                                 if (eh.HandlerType == ExceptionHandlerType.Catch)
 953                                         MarkType (eh.CatchType);
 954
 955                         foreach (Instruction instruction in body.Instructions)
 956                                 MarkInstruction (instruction);
 957                 }
 958
 959                 protected virtual void MarkInstruction (Instruction instruction)
 960                 {
 961                         switch (instruction.OpCode.OperandType) {
 962                         case OperandType.InlineField:
 963                                 MarkField ((FieldReference) instruction.Operand);
 964                                 break;
 965                         case OperandType.InlineMethod:
 966                                 MarkMethod ((MethodReference) instruction.Operand);
 967                                 break;
 968                         case OperandType.InlineTok:
 969                                 object token = instruction.Operand;
 970                                 if (token is TypeReference)
 971                                         MarkType ((TypeReference) token);
 972                                 else if (token is MethodReference)
 973                                         MarkMethod ((MethodReference) token);
 974                                 else
 975                                         MarkField ((FieldReference) token);
 976                                 break;
 977                         case OperandType.InlineType:
 978                                 MarkType ((TypeReference) instruction.Operand);
 979                                 break;
 980                         default:
 981                                 break;
 982                         }
 983                 }
 984         }
 985 }