mcs/mcs/decl.cs

   1 //
   2 // decl.cs: Declaration base class for structs, classes, enums and interfaces.
   3 //
   4 // Author: Miguel de Icaza (miguel@gnu.org)
   5 //         Marek Safar (marek.safar@seznam.cz)
   6 //
   7 // Licensed under the terms of the GNU GPL
   8 //
   9 // (C) 2001 Ximian, Inc (http://www.ximian.com)
  10 // (C) 2004 Novell, Inc
  11 //
  12 // TODO: Move the method verification stuff from the class.cs and interface.cs here
  13 //
  14
  15 using System;
  16 using System.Collections;
  17 using System.Globalization;
  18 using System.Reflection.Emit;
  19 using System.Reflection;
  20
  21 #if BOOTSTRAP_WITH_OLDLIB
  22 using XmlElement = System.Object;
  23 #else
  24 using System.Xml;
  25 #endif
  26
  27 namespace Mono.CSharp {
  28
  29         public class MemberName {
  30                 public string Name;
  31                 public readonly MemberName Left;
  32
  33                 public static readonly MemberName Null = new MemberName ("");
  34
  35                 public MemberName (string name)
  36                 {
  37                         this.Name = name;
  38                 }
  39
  40                 public MemberName (MemberName left, string name)
  41                         : this (name)
  42                 {
  43                         this.Left = left;
  44                 }
  45
  46                 public MemberName (MemberName left, MemberName right)
  47                         : this (left, right.Name)
  48                 {
  49                 }
  50
  51                 public string GetName ()
  52                 {
  53                         return GetName (false);
  54                 }
  55
  56                 public string GetName (bool is_generic)
  57                 {
  58                         string name = is_generic ? Basename : Name;
  59                         if (Left != null)
  60                                 return Left.GetName (is_generic) + "." + name;
  61                         else
  62                                 return name;
  63                 }
  64
  65                 ///
  66                 /// This returns exclusively the name as seen on the source code
  67                 /// it is not the fully qualifed type after resolution
  68                 ///
  69                 public string GetPartialName ()
  70                 {
  71                         if (Left != null)
  72                                 return Left.GetPartialName () + "." + Name;
  73                         else
  74                                 return Name;
  75                 }
  76
  77                 public string GetTypeName ()
  78                 {
  79                         if (Left != null)
  80                                 return Left.GetTypeName () + "." + Name;
  81                         else
  82                                 return Name;
  83                 }
  84
  85                 public Expression GetTypeExpression (Location loc)
  86                 {
  87                         if (Left != null) {
  88                                 Expression lexpr = Left.GetTypeExpression (loc);
  89
  90                                 return new MemberAccess (lexpr, Name, loc);
  91                         } else {
  92                                 return new SimpleName (Name, loc);
  93                         }
  94                 }
  95
  96                 public MemberName Clone ()
  97                 {
  98                         if (Left != null)
  99                                 return new MemberName (Left.Clone (), Name);
 100                         else
 101                                 return new MemberName (Name);
 102                 }
 103
 104                 public string Basename {
 105                         get {
 106                                 return Name;
 107                         }
 108                 }
 109
 110                 public override string ToString ()
 111                 {
 112                         Console.WriteLine ("INTERNAL-WARNING: someone is miss-using MemberName.ToString in the compiler.  Please report this bug");
 113                         Console.WriteLine ("From: " + Environment.StackTrace);
 114                         return Name;
 115                 }
 116         }
 117
 118         /// <summary>
 119         ///   Base representation for members.  This is used to keep track
 120         ///   of Name, Location and Modifier flags, and handling Attributes.
 121         /// </summary>
 122         public abstract class MemberCore : Attributable {
 123                 /// <summary>
 124                 ///   Public name
 125                 /// </summary>
 126                 public string Name {
 127                         get {
 128                                 // !(this is GenericMethod) && !(this is Method)
 129                                 return MemberName.GetName (false);
 130                         }
 131                 }
 132
 133                 // Is not readonly because of IndexerName attribute
 134                 public MemberName MemberName;
 135
 136                 /// <summary>
 137                 ///   Modifier flags that the user specified in the source code
 138                 /// </summary>
 139                 public int ModFlags;
 140
 141                 public readonly TypeContainer Parent;
 142
 143                 /// <summary>
 144                 ///   Location where this declaration happens
 145                 /// </summary>
 146                 public readonly Location Location;
 147
 148                 /// <summary>
 149                 ///   XML documentation comment
 150                 /// </summary>
 151                 public string DocComment;
 152
 153                 /// <summary>
 154                 ///   Represents header string for documentation comment
 155                 ///   for each member types.
 156                 /// </summary>
 157                 public abstract string DocCommentHeader { get; }
 158
 159                 [Flags]
 160                 public enum Flags {
 161                         Obsolete_Undetected = 1,                // Obsolete attribute has not been detected yet
 162                         Obsolete = 1 << 1,                      // Type has obsolete attribute
 163                         ClsCompliance_Undetected = 1 << 2,      // CLS Compliance has not been detected yet
 164                         ClsCompliant = 1 << 3,                  // Type is CLS Compliant
 165                         CloseTypeCreated = 1 << 4,              // Tracks whether we have Closed the type
 166                         HasCompliantAttribute_Undetected = 1 << 5,      // Presence of CLSCompliantAttribute has not been detected
 167                         HasClsCompliantAttribute = 1 << 6,                      // Type has CLSCompliantAttribute
 168                         ClsCompliantAttributeTrue = 1 << 7,                     // Type has CLSCompliant (true)
 169                         Excluded_Undetected = 1 << 8,           // Conditional attribute has not been detected yet
 170                         Excluded = 1 << 9,                                      // Method is conditional
 171                         TestMethodDuplication = 1 << 10         // Test for duplication must be performed
 172                 }
 173
 174                 /// <summary>
 175                 ///   MemberCore flags at first detected then cached
 176                 /// </summary>
 177                 internal Flags caching_flags;
 178
 179                 public MemberCore (TypeContainer parent, MemberName name, Attributes attrs,
 180                                    Location loc)
 181                         : base (attrs)
 182                 {
 183                         Parent = parent;
 184                         MemberName = name;
 185                         Location = loc;
 186                         caching_flags = Flags.Obsolete_Undetected | Flags.ClsCompliance_Undetected | Flags.HasCompliantAttribute_Undetected | Flags.Excluded_Undetected;
 187                 }
 188
 189                 /// <summary>
 190                 /// Tests presence of ObsoleteAttribute and report proper error
 191                 /// </summary>
 192                 protected void CheckUsageOfObsoleteAttribute (Type type)
 193                 {
 194                         if (type == null)
 195                                 return;
 196
 197                         ObsoleteAttribute obsolete_attr = AttributeTester.GetObsoleteAttribute (type);
 198                         if (obsolete_attr == null)
 199                                 return;
 200
 201                         AttributeTester.Report_ObsoleteMessage (obsolete_attr, type.FullName, Location);
 202                 }
 203
 204                 public abstract bool Define ();
 205
 206                 //
 207                 // Returns full member name for error message
 208                 //
 209                 public virtual string GetSignatureForError ()
 210                 {
 211                         return Name;
 212                 }
 213
 214                 /// <summary>
 215                 /// Use this method when MethodBuilder is null
 216                 /// </summary>
 217                 public virtual string GetSignatureForError (TypeContainer tc)
 218                 {
 219                         return Name;
 220                 }
 221
 222                 /// <summary>
 223                 /// Base Emit method. This is also entry point for CLS-Compliant verification.
 224                 /// </summary>
 225                 public virtual void Emit ()
 226                 {
 227                         // Hack with Parent == null is for EnumMember
 228                         if (Parent == null || (GetObsoleteAttribute (Parent) == null && Parent.GetObsoleteAttribute (Parent) == null))
 229                                 VerifyObsoleteAttribute ();
 230
 231                         if (!RootContext.VerifyClsCompliance)
 232                                 return;
 233
 234                         VerifyClsCompliance (Parent);
 235                 }
 236
 237                 public bool InUnsafe {
 238                         get {
 239                                 return ((ModFlags & Modifiers.UNSAFE) != 0) || Parent.UnsafeContext;
 240                         }
 241                 }
 242
 243                 //
 244                 // Whehter is it ok to use an unsafe pointer in this type container
 245                 //
 246                 public bool UnsafeOK (DeclSpace parent)
 247                 {
 248                         //
 249                         // First check if this MemberCore modifier flags has unsafe set
 250                         //
 251                         if ((ModFlags & Modifiers.UNSAFE) != 0)
 252                                 return true;
 253
 254                         if (parent.UnsafeContext)
 255                                 return true;
 256
 257                         Expression.UnsafeError (Location);
 258                         return false;
 259                 }
 260
 261                 /// <summary>
 262                 /// Returns instance of ObsoleteAttribute for this MemberCore
 263                 /// </summary>
 264                 public ObsoleteAttribute GetObsoleteAttribute (DeclSpace ds)
 265                 {
 266                         // ((flags & (Flags.Obsolete_Undetected | Flags.Obsolete)) == 0) is slower, but why ?
 267                         if ((caching_flags & Flags.Obsolete_Undetected) == 0 && (caching_flags & Flags.Obsolete) == 0) {
 268                                 return null;
 269                         }
 270
 271                         caching_flags &= ~Flags.Obsolete_Undetected;
 272
 273                         if (OptAttributes == null)
 274                                 return null;
 275
 276                         // TODO: remove this allocation
 277                         EmitContext ec = new EmitContext (ds.Parent, ds, ds.Location,
 278                                 null, null, ds.ModFlags, false);
 279
 280                         Attribute obsolete_attr = OptAttributes.Search (TypeManager.obsolete_attribute_type, ec);
 281                         if (obsolete_attr == null)
 282                                 return null;
 283
 284                         ObsoleteAttribute obsolete = obsolete_attr.GetObsoleteAttribute (ds);
 285                         if (obsolete == null)
 286                                 return null;
 287
 288                         caching_flags |= Flags.Obsolete;
 289                         return obsolete;
 290                 }
 291
 292                 /// <summary>
 293                 /// Analyze whether CLS-Compliant verification must be execute for this MemberCore.
 294                 /// </summary>
 295                 public override bool IsClsCompliaceRequired (DeclSpace container)
 296                 {
 297                         if ((caching_flags & Flags.ClsCompliance_Undetected) == 0)
 298                                 return (caching_flags & Flags.ClsCompliant) != 0;
 299
 300                         if (GetClsCompliantAttributeValue (container) && IsExposedFromAssembly (container)) {
 301                                 caching_flags &= ~Flags.ClsCompliance_Undetected;
 302                                 caching_flags |= Flags.ClsCompliant;
 303                                 return true;
 304                         }
 305
 306                         caching_flags &= ~Flags.ClsCompliance_Undetected;
 307                         return false;
 308                 }
 309
 310                 /// <summary>
 311                 /// Returns true when MemberCore is exposed from assembly.
 312                 /// </summary>
 313                 public bool IsExposedFromAssembly (DeclSpace ds)
 314                 {
 315                         if ((ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) == 0)
 316                                 return false;
 317
 318                         DeclSpace parentContainer = ds;
 319                         while (parentContainer != null && parentContainer.ModFlags != 0) {
 320                                 if ((parentContainer.ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) == 0)
 321                                         return false;
 322                                 parentContainer = parentContainer.Parent;
 323                         }
 324                         return true;
 325                 }
 326
 327                 /// <summary>
 328                 /// Resolve CLSCompliantAttribute value or gets cached value.
 329                 /// </summary>
 330                 bool GetClsCompliantAttributeValue (DeclSpace ds)
 331                 {
 332                         if (OptAttributes != null) {
 333                                 EmitContext ec = new EmitContext (ds.Parent, ds, ds.Location,
 334                                                                   null, null, ds.ModFlags, false);
 335                                 Attribute cls_attribute = OptAttributes.Search (TypeManager.cls_compliant_attribute_type, ec);
 336                                 if (cls_attribute != null) {
 337                                         caching_flags |= Flags.HasClsCompliantAttribute;
 338                                         return cls_attribute.GetClsCompliantAttributeValue (ds);
 339                                 }
 340                         }
 341                         return ds.GetClsCompliantAttributeValue ();
 342                 }
 343
 344                 /// <summary>
 345                 /// Returns true if MemberCore is explicitly marked with CLSCompliantAttribute
 346                 /// </summary>
 347                 protected bool HasClsCompliantAttribute {
 348                         get {
 349                                 return (caching_flags & Flags.HasClsCompliantAttribute) != 0;
 350                         }
 351                 }
 352
 353
 354                 /// <summary>
 355                 /// The main virtual method for CLS-Compliant verifications.
 356                 /// The method returns true if member is CLS-Compliant and false if member is not
 357                 /// CLS-Compliant which means that CLS-Compliant tests are not necessary. A descendants override it
 358                 /// and add their extra verifications.
 359                 /// </summary>
 360                 protected virtual bool VerifyClsCompliance (DeclSpace ds)
 361                 {
 362                         if (!IsClsCompliaceRequired (ds)) {
 363                                 if ((RootContext.WarningLevel >= 2) && HasClsCompliantAttribute && !IsExposedFromAssembly (ds)) {
 364                                         Report.Warning (3019, Location, "CLS compliance checking will not be performed on '{0}' because it is private or internal", GetSignatureForError ());
 365                                 }
 366                                 return false;
 367                         }
 368
 369                         if (!CodeGen.Assembly.IsClsCompliant) {
 370                                 if (HasClsCompliantAttribute) {
 371                                         Report.Error (3014, Location, "'{0}' cannot be marked as CLS-compliant because the assembly does not have a CLSCompliant attribute", GetSignatureForError ());
 372                                 }
 373                                 return false;
 374                         }
 375
 376                         int index = Name.LastIndexOf ('.');
 377                         if (Name [index > 0 ? index + 1 : 0] == '_') {
 378                                 Report.Error (3008, Location, "Identifier '{0}' is not CLS-compliant", GetSignatureForError () );
 379                         }
 380                         return true;
 381                 }
 382
 383                 protected abstract void VerifyObsoleteAttribute ();
 384
 385                 //
 386                 // Raised (and passed an XmlElement that contains the comment)
 387                 // when GenerateDocComment is writing documentation expectedly.
 388                 //
 389                 internal virtual void OnGenerateDocComment (DeclSpace ds, XmlElement intermediateNode)
 390                 {
 391                 }
 392
 393                 //
 394                 // Returns a string that represents the signature for this
 395                 // member which should be used in XML documentation.
 396                 //
 397                 public virtual string GetDocCommentName (DeclSpace ds)
 398                 {
 399                         if (ds == null || this is DeclSpace)
 400                                 return DocCommentHeader + Name;
 401                         else
 402                                 return String.Concat (DocCommentHeader, ds.Name, ".", Name);
 403                 }
 404
 405                 //
 406                 // Generates xml doc comments (if any), and if required,
 407                 // handle warning report.
 408                 //
 409                 internal virtual void GenerateDocComment (DeclSpace ds)
 410                 {
 411                         DocUtil.GenerateDocComment (this, ds);
 412                 }
 413         }
 414
 415         /// <summary>
 416         ///   Base class for structs, classes, enumerations and interfaces.
 417         /// </summary>
 418         /// <remarks>
 419         ///   They all create new declaration spaces.  This
 420         ///   provides the common foundation for managing those name
 421         ///   spaces.
 422         /// </remarks>
 423         public abstract class DeclSpace : MemberCore {
 424                 /// <summary>
 425                 ///   this points to the actual definition that is being
 426                 ///   created with System.Reflection.Emit
 427                 /// </summary>
 428                 public TypeBuilder TypeBuilder;
 429
 430                 //
 431                 // This is the namespace in which this typecontainer
 432                 // was declared.  We use this to resolve names.
 433                 //
 434                 public NamespaceEntry NamespaceEntry;
 435
 436                 public Hashtable Cache = new Hashtable ();
 437
 438                 public string Basename;
 439
 440                 protected Hashtable defined_names;
 441
 442                 static string[] attribute_targets = new string [] { "type" };
 443
 444                 public DeclSpace (NamespaceEntry ns, TypeContainer parent, MemberName name,
 445                                   Attributes attrs, Location l)
 446                         : base (parent, name, attrs, l)
 447                 {
 448                         NamespaceEntry = ns;
 449                         Basename = name.Name;
 450                         defined_names = new Hashtable ();
 451                 }
 452
 453                 /// <summary>
 454                 /// Adds the member to defined_names table. It tests for duplications and enclosing name conflicts
 455                 /// </summary>
 456                 protected bool AddToContainer (MemberCore symbol, bool is_method, string fullname, string basename)
 457                 {
 458                         if (basename == Basename && !(this is Interface)) {
 459                                 Report.SymbolRelatedToPreviousError (this);
 460                                 Report.Error (542, "'{0}': member names cannot be the same as their enclosing type", symbol.Location, symbol.GetSignatureForError ());
 461                                 return false;
 462                         }
 463
 464                         MemberCore mc = (MemberCore)defined_names [fullname];
 465
 466                         if (is_method && (mc is MethodCore || mc is IMethodData)) {
 467                                 symbol.caching_flags |= Flags.TestMethodDuplication;
 468                                 mc.caching_flags |= Flags.TestMethodDuplication;
 469                                 return true;
 470                         }
 471
 472                         if (mc != null) {
 473                                 Report.SymbolRelatedToPreviousError (mc);
 474                                 Report.Error (102, symbol.Location, "The type '{0}' already contains a definition for '{1}'", GetSignatureForError (), basename);
 475                                 return false;
 476                         }
 477
 478                         defined_names.Add (fullname, symbol);
 479                         return true;
 480                 }
 481
 482                 public void RecordDecl ()
 483                 {
 484                         if ((NamespaceEntry != null) && (Parent == RootContext.Tree.Types))
 485                                 NamespaceEntry.DefineName (MemberName.Basename, this);
 486                 }
 487
 488                 /// <summary>
 489                 ///   Returns the MemberCore associated with a given name in the declaration
 490                 ///   space. It doesn't return method based symbols !!
 491                 /// </summary>
 492                 ///
 493                 public MemberCore GetDefinition (string name)
 494                 {
 495                         return (MemberCore)defined_names [name];
 496                 }
 497
 498                 bool in_transit = false;
 499
 500                 /// <summary>
 501                 ///   This function is used to catch recursive definitions
 502                 ///   in declarations.
 503                 /// </summary>
 504                 public bool InTransit {
 505                         get {
 506                                 return in_transit;
 507                         }
 508
 509                         set {
 510                                 in_transit = value;
 511                         }
 512                 }
 513
 514                 /// <summary>
 515                 ///   Looks up the alias for the name
 516                 /// </summary>
 517                 public string LookupAlias (string name)
 518                 {
 519                         if (NamespaceEntry != null)
 520                                 return NamespaceEntry.LookupAlias (name);
 521                         else
 522                                 return null;
 523                 }
 524
 525                 //
 526                 // root_types contains all the types.  All TopLevel types
 527                 // hence have a parent that points to `root_types', that is
 528                 // why there is a non-obvious test down here.
 529                 //
 530                 public bool IsTopLevel {
 531                         get {
 532                                 if (Parent != null){
 533                                         if (Parent.Parent == null)
 534                                                 return true;
 535                                 }
 536                                 return false;
 537                         }
 538                 }
 539
 540                 public virtual void CloseType ()
 541                 {
 542                         if ((caching_flags & Flags.CloseTypeCreated) == 0){
 543                                 try {
 544                                         TypeBuilder.CreateType ();
 545                                 } catch {
 546                                         //
 547                                         // The try/catch is needed because
 548                                         // nested enumerations fail to load when they
 549                                         // are defined.
 550                                         //
 551                                         // Even if this is the right order (enumerations
 552                                         // declared after types).
 553                                         //
 554                                         // Note that this still creates the type and
 555                                         // it is possible to save it
 556                                 }
 557                                 caching_flags |= Flags.CloseTypeCreated;
 558                         }
 559                 }
 560
 561                 /// <remarks>
 562                 ///  Should be overriten by the appropriate declaration space
 563                 /// </remarks>
 564                 public abstract TypeBuilder DefineType ();
 565
 566                 /// <summary>
 567                 ///   Define all members, but don't apply any attributes or do anything which may
 568                 ///   access not-yet-defined classes.  This method also creates the MemberCache.
 569                 /// </summary>
 570                 public abstract bool DefineMembers (TypeContainer parent);
 571
 572                 //
 573                 // Whether this is an `unsafe context'
 574                 //
 575                 public bool UnsafeContext {
 576                         get {
 577                                 if ((ModFlags & Modifiers.UNSAFE) != 0)
 578                                         return true;
 579                                 if (Parent != null)
 580                                         return Parent.UnsafeContext;
 581                                 return false;
 582                         }
 583                 }
 584
 585                 public static string MakeFQN (string nsn, string name)
 586                 {
 587                         if (nsn == "")
 588                                 return name;
 589                         return String.Concat (nsn, ".", name);
 590                 }
 591
 592                 EmitContext type_resolve_ec;
 593                 EmitContext GetTypeResolveEmitContext (TypeContainer parent, Location loc)
 594                 {
 595                         type_resolve_ec = new EmitContext (parent, this, loc, null, null, ModFlags, false);
 596                         type_resolve_ec.ResolvingTypeTree = true;
 597
 598                         return type_resolve_ec;
 599                 }
 600
 601                 // <summary>
 602                 //    Looks up the type, as parsed into the expression `e'.
 603                 // </summary>
 604                 //[Obsolete ("This method is going away soon")]
 605                 public Type ResolveType (Expression e, bool silent, Location loc)
 606                 {
 607                         TypeExpr d = ResolveTypeExpr (e, silent, loc);
 608                         return d == null ? null : d.Type;
 609                 }
 610
 611                 // <summary>
 612                 //    Resolves the expression `e' for a type, and will recursively define
 613                 //    types.  This should only be used for resolving base types.
 614                 // </summary>
 615                 public TypeExpr ResolveTypeExpr (Expression e, bool silent, Location loc)
 616                 {
 617                         if (type_resolve_ec == null)
 618                                 type_resolve_ec = GetTypeResolveEmitContext (Parent, loc);
 619                         type_resolve_ec.loc = loc;
 620                         type_resolve_ec.ContainerType = TypeBuilder;
 621
 622                         return e.ResolveAsTypeTerminal (type_resolve_ec, silent);
 623                 }
 624
 625                 public bool CheckAccessLevel (Type check_type)
 626                 {
 627                         if (check_type == TypeBuilder)
 628                                 return true;
 629
 630                         TypeAttributes check_attr = check_type.Attributes & TypeAttributes.VisibilityMask;
 631
 632                         //
 633                         // Broken Microsoft runtime, return public for arrays, no matter what
 634                         // the accessibility is for their underlying class, and they return
 635                         // NonPublic visibility for pointers
 636                         //
 637                         if (check_type.IsArray || check_type.IsPointer)
 638                                 return CheckAccessLevel (TypeManager.GetElementType (check_type));
 639
 640                         if (TypeBuilder == null)
 641                                 // FIXME: TypeBuilder will be null when invoked by Class.GetNormalBases().
 642                                 //        However, this is invoked again later -- so safe to return true.
 643                                 //        May also be null when resolving top-level attributes.
 644                                 return true;
 645
 646                         switch (check_attr){
 647                         case TypeAttributes.Public:
 648                                 return true;
 649
 650                         case TypeAttributes.NotPublic:
 651                                 //
 652                                 // This test should probably use the declaringtype.
 653                                 //
 654                                 return check_type.Assembly == TypeBuilder.Assembly;
 655
 656                         case TypeAttributes.NestedPublic:
 657                                 return true;
 658
 659                         case TypeAttributes.NestedPrivate:
 660                                 return NestedAccessible (check_type);
 661
 662                         case TypeAttributes.NestedFamily:
 663                                 return FamilyAccessible (check_type);
 664
 665                         case TypeAttributes.NestedFamANDAssem:
 666                                 return (check_type.Assembly == TypeBuilder.Assembly) &&
 667                                         FamilyAccessible (check_type);
 668
 669                         case TypeAttributes.NestedFamORAssem:
 670                                 return (check_type.Assembly == TypeBuilder.Assembly) ||
 671                                         FamilyAccessible (check_type);
 672
 673                         case TypeAttributes.NestedAssembly:
 674                                 return check_type.Assembly == TypeBuilder.Assembly;
 675                         }
 676
 677                         Console.WriteLine ("HERE: " + check_attr);
 678                         return false;
 679
 680                 }
 681
 682                 protected bool NestedAccessible (Type check_type)
 683                 {
 684                         string check_type_name = check_type.FullName;
 685
 686                         // At this point, we already know check_type is a nested class.
 687                         int cio = check_type_name.LastIndexOf ('+');
 688
 689                         // Ensure that the string 'container' has a '+' in it to avoid false matches
 690                         string container = check_type_name.Substring (0, cio + 1);
 691
 692                         // Ensure that type_name ends with a '+' so that it can match 'container', if necessary
 693                         string type_name = TypeBuilder.FullName + "+";
 694
 695                         // If the current class is nested inside the container of check_type,
 696                         // we can access check_type even if it is private or protected.
 697                         return type_name.StartsWith (container);
 698                 }
 699
 700                 protected bool FamilyAccessible (Type check_type)
 701                 {
 702                         Type declaring = check_type.DeclaringType;
 703                         if (TypeBuilder == declaring ||
 704                             TypeBuilder.IsSubclassOf (declaring))
 705                                 return true;
 706
 707                         return NestedAccessible (check_type);
 708                 }
 709
 710                 // Access level of a type.
 711                 const int X = 1;
 712                 enum AccessLevel { // Each column represents `is this scope larger or equal to Blah scope'
 713                                             // Public    Assembly   Protected
 714                         Protected           = (0 << 0) | (0 << 1) | (X << 2),
 715                         Public              = (X << 0) | (X << 1) | (X << 2),
 716                         Private             = (0 << 0) | (0 << 1) | (0 << 2),
 717                         Internal            = (0 << 0) | (X << 1) | (0 << 2),
 718                         ProtectedOrInternal = (0 << 0) | (X << 1) | (X << 2),
 719                 }
 720
 721                 static AccessLevel GetAccessLevelFromModifiers (int flags)
 722                 {
 723                         if ((flags & Modifiers.INTERNAL) != 0) {
 724
 725                                 if ((flags & Modifiers.PROTECTED) != 0)
 726                                         return AccessLevel.ProtectedOrInternal;
 727                                 else
 728                                         return AccessLevel.Internal;
 729
 730                         } else if ((flags & Modifiers.PROTECTED) != 0)
 731                                 return AccessLevel.Protected;
 732
 733                         else if ((flags & Modifiers.PRIVATE) != 0)
 734                                 return AccessLevel.Private;
 735
 736                         else
 737                                 return AccessLevel.Public;
 738                 }
 739
 740                 // What is the effective access level of this?
 741                 // TODO: Cache this?
 742                 AccessLevel EffectiveAccessLevel {
 743                         get {
 744                                 AccessLevel myAccess = GetAccessLevelFromModifiers (ModFlags);
 745                                 if (!IsTopLevel && (Parent != null))
 746                                         return myAccess & Parent.EffectiveAccessLevel;
 747                                 else
 748                                         return myAccess;
 749                         }
 750                 }
 751
 752                 // Return the access level for type `t'
 753                 static AccessLevel TypeEffectiveAccessLevel (Type t)
 754                 {
 755                         if (t.IsPublic)
 756                                 return AccessLevel.Public;
 757                         if (t.IsNestedPrivate)
 758                                 return AccessLevel.Private;
 759                         if (t.IsNotPublic)
 760                                 return AccessLevel.Internal;
 761
 762                         // By now, it must be nested
 763                         AccessLevel parentLevel = TypeEffectiveAccessLevel (t.DeclaringType);
 764
 765                         if (t.IsNestedPublic)
 766                                 return parentLevel;
 767                         if (t.IsNestedAssembly)
 768                                 return parentLevel & AccessLevel.Internal;
 769                         if (t.IsNestedFamily)
 770                                 return parentLevel & AccessLevel.Protected;
 771                         if (t.IsNestedFamORAssem)
 772                                 return parentLevel & AccessLevel.ProtectedOrInternal;
 773                         if (t.IsNestedFamANDAssem)
 774                                 throw new NotImplementedException ("NestedFamANDAssem not implemented, cant make this kind of type from c# anyways");
 775
 776                         // nested private is taken care of
 777
 778                         throw new Exception ("I give up, what are you?");
 779                 }
 780
 781                 //
 782                 // This answers `is the type P, as accessible as a member M which has the
 783                 // accessability @flags which is declared as a nested member of the type T, this declspace'
 784                 //
 785                 public bool AsAccessible (Type p, int flags)
 786                 {
 787                         //
 788                         // 1) if M is private, its accessability is the same as this declspace.
 789                         // we already know that P is accessible to T before this method, so we
 790                         // may return true.
 791                         //
 792
 793                         if ((flags & Modifiers.PRIVATE) != 0)
 794                                 return true;
 795
 796                         while (p.IsArray || p.IsPointer || p.IsByRef)
 797                                 p = TypeManager.GetElementType (p);
 798
 799                         AccessLevel pAccess = TypeEffectiveAccessLevel (p);
 800                         AccessLevel mAccess = this.EffectiveAccessLevel &
 801                                 GetAccessLevelFromModifiers (flags);
 802
 803                         // for every place from which we can access M, we must
 804                         // be able to access P as well. So, we want
 805                         // For every bit in M and P, M_i -> P_1 == true
 806                         // or, ~ (M -> P) == 0 <-> ~ ( ~M | P) == 0
 807
 808                         return ~ (~ mAccess | pAccess) == 0;
 809                 }
 810
 811                 static DoubleHash dh = new DoubleHash (1000);
 812
 813                 Type DefineTypeAndParents (DeclSpace tc)
 814                 {
 815                         DeclSpace container = tc.Parent;
 816
 817                         if (container.TypeBuilder == null && container.Name != "")
 818                                 DefineTypeAndParents (container);
 819
 820                         return tc.DefineType ();
 821                 }
 822
 823                 Type LookupInterfaceOrClass (string ns, string name, out bool error)
 824                 {
 825                         DeclSpace parent;
 826                         Type t;
 827                         object r;
 828
 829                         error = false;
 830                         int p = name.LastIndexOf ('.');
 831
 832                         if (dh.Lookup (ns, name, out r))
 833                                 return (Type) r;
 834                         else {
 835                                 //
 836                                 // If the type is not a nested type, we do not need `LookupType's processing.
 837                                 // If the @name does not have a `.' in it, this cant be a nested type.
 838                                 //
 839                                 if (ns != ""){
 840                                         if (Namespace.IsNamespace (ns)) {
 841                                                 if (p != -1)
 842                                                         t = TypeManager.LookupType (ns + "." + name);
 843                                                 else
 844                                                         t = TypeManager.LookupTypeDirect (ns + "." + name);
 845                                         } else
 846                                                 t = null;
 847                                 } else if (p != -1)
 848                                         t = TypeManager.LookupType (name);
 849                                 else
 850                                         t = TypeManager.LookupTypeDirect (name);
 851                         }
 852
 853                         if (t != null) {
 854                                 dh.Insert (ns, name, t);
 855                                 return t;
 856                         }
 857
 858                         //
 859                         // In case we are fed a composite name, normalize it.
 860                         //
 861
 862                         if (p != -1){
 863                                 ns = MakeFQN (ns, name.Substring (0, p));
 864                                 name = name.Substring (p+1);
 865                         }
 866
 867                         parent = RootContext.Tree.LookupByNamespace (ns, name);
 868                         if (parent == null) {
 869                                 dh.Insert (ns, name, null);
 870                                 return null;
 871                         }
 872
 873                         t = DefineTypeAndParents (parent);
 874                         if (t == null){
 875                                 error = true;
 876                                 return null;
 877                         }
 878
 879                         dh.Insert (ns, name, t);
 880                         return t;
 881                 }
 882
 883                 public static void Error_AmbiguousTypeReference (Location loc, string name, Type t1, Type t2)
 884                 {
 885                         Report.Error (104, loc,
 886                                       String.Format ("`{0}' is an ambiguous reference ({1} or {2}) ", name,
 887                                                      t1.FullName, t2.FullName));
 888                 }
 889
 890                 /// <summary>
 891                 ///   GetType is used to resolve type names at the DeclSpace level.
 892                 ///   Use this to lookup class/struct bases, interface bases or
 893                 ///   delegate type references
 894                 /// </summary>
 895                 ///
 896                 /// <remarks>
 897                 ///   Contrast this to LookupType which is used inside method bodies to
 898                 ///   lookup types that have already been defined.  GetType is used
 899                 ///   during the tree resolution process and potentially define
 900                 ///   recursively the type
 901                 /// </remarks>
 902                 public Type FindType (Location loc, string name)
 903                 {
 904                         Type t;
 905                         bool error;
 906
 907                         //
 908                         // For the case the type we are looking for is nested within this one
 909                         // or is in any base class
 910                         //
 911                         DeclSpace containing_ds = this;
 912
 913                         while (containing_ds != null){
 914                                 Type container_type = containing_ds.TypeBuilder;
 915                                 Type current_type = container_type;
 916
 917                                 while (current_type != null && current_type != TypeManager.object_type) {
 918                                         string pre = current_type.FullName;
 919
 920                                         t = LookupInterfaceOrClass (pre, name, out error);
 921                                         if (error)
 922                                                 return null;
 923
 924                                         if ((t != null) && containing_ds.CheckAccessLevel (t))
 925                                                 return t;
 926
 927                                         current_type = current_type.BaseType;
 928                                 }
 929                                 containing_ds = containing_ds.Parent;
 930                         }
 931
 932                         //
 933                         // Attempt to lookup the class on our namespace and all it's implicit parents
 934                         //
 935                         for (NamespaceEntry ns = NamespaceEntry; ns != null; ns = ns.ImplicitParent) {
 936                                 t = LookupInterfaceOrClass (ns.FullName, name, out error);
 937                                 if (error)
 938                                         return null;
 939
 940                                 if (t != null)
 941                                         return t;
 942                         }
 943
 944                         //
 945                         // Attempt to do a direct unqualified lookup
 946                         //
 947                         t = LookupInterfaceOrClass ("", name, out error);
 948                         if (error)
 949                                 return null;
 950
 951                         if (t != null)
 952                                 return t;
 953
 954                         //
 955                         // Attempt to lookup the class on any of the `using'
 956                         // namespaces
 957                         //
 958
 959                         for (NamespaceEntry ns = NamespaceEntry; ns != null; ns = ns.Parent){
 960
 961                                 t = LookupInterfaceOrClass (ns.FullName, name, out error);
 962                                 if (error)
 963                                         return null;
 964
 965                                 if (t != null)
 966                                         return t;
 967
 968                                 if (name.IndexOf ('.') > 0)
 969                                         continue;
 970
 971                                 string alias_value = ns.LookupAlias (name);
 972                                 if (alias_value != null) {
 973                                         t = LookupInterfaceOrClass ("", alias_value, out error);
 974                                         if (error)
 975                                                 return null;
 976
 977                                         if (t != null)
 978                                                 return t;
 979                                 }
 980
 981                                 //
 982                                 // Now check the using clause list
 983                                 //
 984                                 Type match = null;
 985                                 foreach (Namespace using_ns in ns.GetUsingTable ()) {
 986                                         match = LookupInterfaceOrClass (using_ns.Name, name, out error);
 987                                         if (error)
 988                                                 return null;
 989
 990                                         if (match != null){
 991                                                 if (t != null){
 992                                                         if (CheckAccessLevel (match)) {
 993                                                                 Error_AmbiguousTypeReference (loc, name, t, match);
 994                                                                 return null;
 995                                                         }
 996                                                         continue;
 997                                                 }
 998
 999                                                 t = match;
1000                                         }
1001                                 }
1002                                 if (t != null)
1003                                         return t;
1004                         }
1005
1006                         //Report.Error (246, Location, "Can not find type `"+name+"'");
1007                         return null;
1008                 }
1009
1010                 /// <remarks>
1011                 ///   This function is broken and not what you're looking for.  It should only
1012                 ///   be used while the type is still being created since it doesn't use the cache
1013                 ///   and relies on the filter doing the member name check.
1014                 /// </remarks>
1015                 public abstract MemberList FindMembers (MemberTypes mt, BindingFlags bf,
1016                                                         MemberFilter filter, object criteria);
1017
1018                 /// <remarks>
1019                 ///   If we have a MemberCache, return it.  This property may return null if the
1020                 ///   class doesn't have a member cache or while it's still being created.
1021                 /// </remarks>
1022                 public abstract MemberCache MemberCache {
1023                         get;
1024                 }
1025
1026                 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
1027                 {
1028                         try {
1029                                 TypeBuilder.SetCustomAttribute (cb);
1030                         } catch (System.ArgumentException e) {
1031                                 Report.Warning (-21, a.Location,
1032                                                 "The CharSet named property on StructLayout\n"+
1033                                                 "\tdoes not work correctly on Microsoft.NET\n"+
1034                                                 "\tYou might want to remove the CharSet declaration\n"+
1035                                                 "\tor compile using the Mono runtime instead of the\n"+
1036                                                 "\tMicrosoft .NET runtime\n"+
1037                                                 "\tThe runtime gave the error: " + e);
1038                         }
1039                 }
1040
1041                 /// <summary>
1042                 /// Goes through class hierarchy and get value of first CLSCompliantAttribute that found.
1043                 /// If no is attribute exists then return assembly CLSCompliantAttribute.
1044                 /// </summary>
1045                 public bool GetClsCompliantAttributeValue ()
1046                 {
1047                         if ((caching_flags & Flags.HasCompliantAttribute_Undetected) == 0)
1048                                 return (caching_flags & Flags.ClsCompliantAttributeTrue) != 0;
1049
1050                         caching_flags &= ~Flags.HasCompliantAttribute_Undetected;
1051
1052                         if (OptAttributes != null) {
1053                                 EmitContext ec = new EmitContext (Parent, this, Location,
1054                                                                   null, null, ModFlags, false);
1055                                 Attribute cls_attribute = OptAttributes.Search (TypeManager.cls_compliant_attribute_type, ec);
1056                                 if (cls_attribute != null) {
1057                                         caching_flags |= Flags.HasClsCompliantAttribute;
1058                                         if (cls_attribute.GetClsCompliantAttributeValue (this)) {
1059                                                 caching_flags |= Flags.ClsCompliantAttributeTrue;
1060                                                 return true;
1061                                         }
1062                                         return false;
1063                                 }
1064                         }
1065
1066                         if (Parent == null) {
1067                                 if (CodeGen.Assembly.IsClsCompliant) {
1068                                         caching_flags |= Flags.ClsCompliantAttributeTrue;
1069                                         return true;
1070                                 }
1071                                 return false;
1072                         }
1073
1074                         if (Parent.GetClsCompliantAttributeValue ()) {
1075                                 caching_flags |= Flags.ClsCompliantAttributeTrue;
1076                                 return true;
1077                         }
1078                         return false;
1079                 }
1080
1081                 public override string[] ValidAttributeTargets {
1082                         get {
1083                                 return attribute_targets;
1084                         }
1085                 }
1086         }
1087
1088         /// <summary>
1089         ///   This is a readonly list of MemberInfo's.
1090         /// </summary>
1091         public class MemberList : IList {
1092                 public readonly IList List;
1093                 int count;
1094
1095                 /// <summary>
1096                 ///   Create a new MemberList from the given IList.
1097                 /// </summary>
1098                 public MemberList (IList list)
1099                 {
1100                         if (list != null)
1101                                 this.List = list;
1102                         else
1103                                 this.List = new ArrayList ();
1104                         count = List.Count;
1105                 }
1106
1107                 /// <summary>
1108                 ///   Concatenate the ILists `first' and `second' to a new MemberList.
1109                 /// </summary>
1110                 public MemberList (IList first, IList second)
1111                 {
1112                         ArrayList list = new ArrayList ();
1113                         list.AddRange (first);
1114                         list.AddRange (second);
1115                         count = list.Count;
1116                         List = list;
1117                 }
1118
1119                 public static readonly MemberList Empty = new MemberList (new ArrayList ());
1120
1121                 /// <summary>
1122                 ///   Cast the MemberList into a MemberInfo[] array.
1123                 /// </summary>
1124                 /// <remarks>
1125                 ///   This is an expensive operation, only use it if it's really necessary.
1126                 /// </remarks>
1127                 public static explicit operator MemberInfo [] (MemberList list)
1128                 {
1129                         Timer.StartTimer (TimerType.MiscTimer);
1130                         MemberInfo [] result = new MemberInfo [list.Count];
1131                         list.CopyTo (result, 0);
1132                         Timer.StopTimer (TimerType.MiscTimer);
1133                         return result;
1134                 }
1135
1136                 // ICollection
1137
1138                 public int Count {
1139                         get {
1140                                 return count;
1141                         }
1142                 }
1143
1144                 public bool IsSynchronized {
1145                         get {
1146                                 return List.IsSynchronized;
1147                         }
1148                 }
1149
1150                 public object SyncRoot {
1151                         get {
1152                                 return List.SyncRoot;
1153                         }
1154                 }
1155
1156                 public void CopyTo (Array array, int index)
1157                 {
1158                         List.CopyTo (array, index);
1159                 }
1160
1161                 // IEnumerable
1162
1163                 public IEnumerator GetEnumerator ()
1164                 {
1165                         return List.GetEnumerator ();
1166                 }
1167
1168                 // IList
1169
1170                 public bool IsFixedSize {
1171                         get {
1172                                 return true;
1173                         }
1174                 }
1175
1176                 public bool IsReadOnly {
1177                         get {
1178                                 return true;
1179                         }
1180                 }
1181
1182                 object IList.this [int index] {
1183                         get {
1184                                 return List [index];
1185                         }
1186
1187                         set {
1188                                 throw new NotSupportedException ();
1189                         }
1190                 }
1191
1192                 // FIXME: try to find out whether we can avoid the cast in this indexer.
1193                 public MemberInfo this [int index] {
1194                         get {
1195                                 return (MemberInfo) List [index];
1196                         }
1197                 }
1198
1199                 public int Add (object value)
1200                 {
1201                         throw new NotSupportedException ();
1202                 }
1203
1204                 public void Clear ()
1205                 {
1206                         throw new NotSupportedException ();
1207                 }
1208
1209                 public bool Contains (object value)
1210                 {
1211                         return List.Contains (value);
1212                 }
1213
1214                 public int IndexOf (object value)
1215                 {
1216                         return List.IndexOf (value);
1217                 }
1218
1219                 public void Insert (int index, object value)
1220                 {
1221                         throw new NotSupportedException ();
1222                 }
1223
1224                 public void Remove (object value)
1225                 {
1226                         throw new NotSupportedException ();
1227                 }
1228
1229                 public void RemoveAt (int index)
1230                 {
1231                         throw new NotSupportedException ();
1232                 }
1233         }
1234
1235         /// <summary>
1236         ///   This interface is used to get all members of a class when creating the
1237         ///   member cache.  It must be implemented by all DeclSpace derivatives which
1238         ///   want to support the member cache and by TypeHandle to get caching of
1239         ///   non-dynamic types.
1240         /// </summary>
1241         public interface IMemberContainer {
1242                 /// <summary>
1243                 ///   The name of the IMemberContainer.  This is only used for
1244                 ///   debugging purposes.
1245                 /// </summary>
1246                 string Name {
1247                         get;
1248                 }
1249
1250                 /// <summary>
1251                 ///   The type of this IMemberContainer.
1252                 /// </summary>
1253                 Type Type {
1254                         get;
1255                 }
1256
1257                 /// <summary>
1258                 ///   Returns the IMemberContainer of the parent class or null if this
1259                 ///   is an interface or TypeManger.object_type.
1260                 ///   This is used when creating the member cache for a class to get all
1261                 ///   members from the parent class.
1262                 /// </summary>
1263                 MemberCache ParentCache {
1264                         get;
1265                 }
1266
1267                 /// <summary>
1268                 ///   Whether this is an interface.
1269                 /// </summary>
1270                 bool IsInterface {
1271                         get;
1272                 }
1273
1274                 /// <summary>
1275                 ///   Returns all members of this class with the corresponding MemberTypes
1276                 ///   and BindingFlags.
1277                 /// </summary>
1278                 /// <remarks>
1279                 ///   When implementing this method, make sure not to return any inherited
1280                 ///   members and check the MemberTypes and BindingFlags properly.
1281                 ///   Unfortunately, System.Reflection is lame and doesn't provide a way to
1282                 ///   get the BindingFlags (static/non-static,public/non-public) in the
1283                 ///   MemberInfo class, but the cache needs this information.  That's why
1284                 ///   this method is called multiple times with different BindingFlags.
1285                 /// </remarks>
1286                 MemberList GetMembers (MemberTypes mt, BindingFlags bf);
1287
1288                 /// <summary>
1289                 ///   Return the container's member cache.
1290                 /// </summary>
1291                 MemberCache MemberCache {
1292                         get;
1293                 }
1294         }
1295
1296         /// <summary>
1297         ///   The MemberCache is used by dynamic and non-dynamic types to speed up
1298         ///   member lookups.  It has a member name based hash table; it maps each member
1299         ///   name to a list of CacheEntry objects.  Each CacheEntry contains a MemberInfo
1300         ///   and the BindingFlags that were initially used to get it.  The cache contains
1301         ///   all members of the current class and all inherited members.  If this cache is
1302         ///   for an interface types, it also contains all inherited members.
1303         ///
1304         ///   There are two ways to get a MemberCache:
1305         ///   * if this is a dynamic type, lookup the corresponding DeclSpace and then
1306         ///     use the DeclSpace.MemberCache property.
1307         ///   * if this not a dynamic type, call TypeHandle.GetTypeHandle() to get a
1308         ///     TypeHandle instance for the type and then use TypeHandle.MemberCache.
1309         /// </summary>
1310         public class MemberCache {
1311                 public readonly IMemberContainer Container;
1312                 protected Hashtable member_hash;
1313                 protected Hashtable method_hash;
1314
1315                 /// <summary>
1316                 ///   Create a new MemberCache for the given IMemberContainer `container'.
1317                 /// </summary>
1318                 public MemberCache (IMemberContainer container)
1319                 {
1320                         this.Container = container;
1321
1322                         Timer.IncrementCounter (CounterType.MemberCache);
1323                         Timer.StartTimer (TimerType.CacheInit);
1324
1325                         // If we have a parent class (we have a parent class unless we're
1326                         // TypeManager.object_type), we deep-copy its MemberCache here.
1327                         if (Container.ParentCache != null)
1328                                 member_hash = SetupCache (Container.ParentCache);
1329                         else
1330                                 member_hash = new Hashtable ();
1331
1332                         // If this is neither a dynamic type nor an interface, create a special
1333                         // method cache with all declared and inherited methods.
1334                         Type type = container.Type;
1335                         if (!(type is TypeBuilder) && !type.IsInterface) {
1336                                 method_hash = new Hashtable ();
1337                                 AddMethods (type);
1338                         }
1339
1340                         // Add all members from the current class.
1341                         AddMembers (Container);
1342
1343                         Timer.StopTimer (TimerType.CacheInit);
1344                 }
1345
1346                 public MemberCache (Type[] ifaces)
1347                 {
1348                         //
1349                         // The members of this cache all belong to other caches.
1350                         // So, 'Container' will not be used.
1351                         //
1352                         this.Container = null;
1353
1354                         member_hash = new Hashtable ();
1355                         if (ifaces == null)
1356                                 return;
1357
1358                         foreach (Type itype in ifaces)
1359                                 AddCacheContents (TypeManager.LookupMemberCache (itype));
1360                 }
1361
1362                 /// <summary>
1363                 ///   Bootstrap this member cache by doing a deep-copy of our parent.
1364                 /// </summary>
1365                 Hashtable SetupCache (MemberCache parent)
1366                 {
1367                         Hashtable hash = new Hashtable ();
1368
1369                         if (parent == null)
1370                                 return hash;
1371
1372                         IDictionaryEnumerator it = parent.member_hash.GetEnumerator ();
1373                         while (it.MoveNext ()) {
1374                                 hash [it.Key] = ((ArrayList) it.Value).Clone ();
1375                          }
1376
1377                         return hash;
1378                 }
1379
1380                 /// <summary>
1381                 ///   Add the contents of `cache' to the member_hash.
1382                 /// </summary>
1383                 void AddCacheContents (MemberCache cache)
1384                 {
1385                         IDictionaryEnumerator it = cache.member_hash.GetEnumerator ();
1386                         while (it.MoveNext ()) {
1387                                 ArrayList list = (ArrayList) member_hash [it.Key];
1388                                 if (list == null)
1389                                         member_hash [it.Key] = list = new ArrayList ();
1390
1391                                 ArrayList entries = (ArrayList) it.Value;
1392                                 for (int i = entries.Count-1; i >= 0; i--) {
1393                                         CacheEntry entry = (CacheEntry) entries [i];
1394
1395                                         if (entry.Container != cache.Container)
1396                                                 break;
1397                                         list.Add (entry);
1398                                 }
1399                         }
1400                 }
1401
1402                 /// <summary>
1403                 ///   Add all members from class `container' to the cache.
1404                 /// </summary>
1405                 void AddMembers (IMemberContainer container)
1406                 {
1407                         // We need to call AddMembers() with a single member type at a time
1408                         // to get the member type part of CacheEntry.EntryType right.
1409                         if (!container.IsInterface) {
1410                                 AddMembers (MemberTypes.Constructor, container);
1411                                 AddMembers (MemberTypes.Field, container);
1412                         }
1413                         AddMembers (MemberTypes.Method, container);
1414                         AddMembers (MemberTypes.Property, container);
1415                         AddMembers (MemberTypes.Event, container);
1416                         // Nested types are returned by both Static and Instance searches.
1417                         AddMembers (MemberTypes.NestedType,
1418                                     BindingFlags.Static | BindingFlags.Public, container);
1419                         AddMembers (MemberTypes.NestedType,
1420                                     BindingFlags.Static | BindingFlags.NonPublic, container);
1421                 }
1422
1423                 void AddMembers (MemberTypes mt, IMemberContainer container)
1424                 {
1425                         AddMembers (mt, BindingFlags.Static | BindingFlags.Public, container);
1426                         AddMembers (mt, BindingFlags.Static | BindingFlags.NonPublic, container);
1427                         AddMembers (mt, BindingFlags.Instance | BindingFlags.Public, container);
1428                         AddMembers (mt, BindingFlags.Instance | BindingFlags.NonPublic, container);
1429                 }
1430
1431                 /// <summary>
1432                 ///   Add all members from class `container' with the requested MemberTypes and
1433                 ///   BindingFlags to the cache.  This method is called multiple times with different
1434                 ///   MemberTypes and BindingFlags.
1435                 /// </summary>
1436                 void AddMembers (MemberTypes mt, BindingFlags bf, IMemberContainer container)
1437                 {
1438                         MemberList members = container.GetMembers (mt, bf);
1439
1440                         foreach (MemberInfo member in members) {
1441                                 string name = member.Name;
1442
1443                                 // We use a name-based hash table of ArrayList's.
1444                                 ArrayList list = (ArrayList) member_hash [name];
1445                                 if (list == null) {
1446                                         list = new ArrayList ();
1447                                         member_hash.Add (name, list);
1448                                 }
1449
1450                                 // When this method is called for the current class, the list will
1451                                 // already contain all inherited members from our parent classes.
1452                                 // We cannot add new members in front of the list since this'd be an
1453                                 // expensive operation, that's why the list is sorted in reverse order
1454                                 // (ie. members from the current class are coming last).
1455                                 list.Add (new CacheEntry (container, member, mt, bf));
1456                         }
1457                 }
1458
1459                 /// <summary>
1460                 ///   Add all declared and inherited methods from class `type' to the method cache.
1461                 /// </summary>
1462                 void AddMethods (Type type)
1463                 {
1464                         AddMethods (BindingFlags.Static | BindingFlags.Public |
1465                                     BindingFlags.FlattenHierarchy, type);
1466                         AddMethods (BindingFlags.Static | BindingFlags.NonPublic |
1467                                     BindingFlags.FlattenHierarchy, type);
1468                         AddMethods (BindingFlags.Instance | BindingFlags.Public, type);
1469                         AddMethods (BindingFlags.Instance | BindingFlags.NonPublic, type);
1470                 }
1471
1472                 void AddMethods (BindingFlags bf, Type type)
1473                 {
1474                         MemberInfo [] members = type.GetMethods (bf);
1475
1476                         Array.Reverse (members);
1477
1478                         foreach (MethodBase member in members) {
1479                                 string name = member.Name;
1480
1481                                 // We use a name-based hash table of ArrayList's.
1482                                 ArrayList list = (ArrayList) method_hash [name];
1483                                 if (list == null) {
1484                                         list = new ArrayList ();
1485                                         method_hash.Add (name, list);
1486                                 }
1487
1488                                 // Unfortunately, the elements returned by Type.GetMethods() aren't
1489                                 // sorted so we need to do this check for every member.
1490                                 BindingFlags new_bf = bf;
1491                                 if (member.DeclaringType == type)
1492                                         new_bf |= BindingFlags.DeclaredOnly;
1493
1494                                 list.Add (new CacheEntry (Container, member, MemberTypes.Method, new_bf));
1495                         }
1496
1497
1498                 }
1499
1500                 /// <summary>
1501                 ///   Compute and return a appropriate `EntryType' magic number for the given
1502                 ///   MemberTypes and BindingFlags.
1503                 /// </summary>
1504                 protected static EntryType GetEntryType (MemberTypes mt, BindingFlags bf)
1505                 {
1506                         EntryType type = EntryType.None;
1507
1508                         if ((mt & MemberTypes.Constructor) != 0)
1509                                 type |= EntryType.Constructor;
1510                         if ((mt & MemberTypes.Event) != 0)
1511                                 type |= EntryType.Event;
1512                         if ((mt & MemberTypes.Field) != 0)
1513                                 type |= EntryType.Field;
1514                         if ((mt & MemberTypes.Method) != 0)
1515                                 type |= EntryType.Method;
1516                         if ((mt & MemberTypes.Property) != 0)
1517                                 type |= EntryType.Property;
1518                         // Nested types are returned by static and instance searches.
1519                         if ((mt & MemberTypes.NestedType) != 0)
1520                                 type |= EntryType.NestedType | EntryType.Static | EntryType.Instance;
1521
1522                         if ((bf & BindingFlags.Instance) != 0)
1523                                 type |= EntryType.Instance;
1524                         if ((bf & BindingFlags.Static) != 0)
1525                                 type |= EntryType.Static;
1526                         if ((bf & BindingFlags.Public) != 0)
1527                                 type |= EntryType.Public;
1528                         if ((bf & BindingFlags.NonPublic) != 0)
1529                                 type |= EntryType.NonPublic;
1530                         if ((bf & BindingFlags.DeclaredOnly) != 0)
1531                                 type |= EntryType.Declared;
1532
1533                         return type;
1534                 }
1535
1536                 /// <summary>
1537                 ///   The `MemberTypes' enumeration type is a [Flags] type which means that it may
1538                 ///   denote multiple member types.  Returns true if the given flags value denotes a
1539                 ///   single member types.
1540                 /// </summary>
1541                 public static bool IsSingleMemberType (MemberTypes mt)
1542                 {
1543                         switch (mt) {
1544                         case MemberTypes.Constructor:
1545                         case MemberTypes.Event:
1546                         case MemberTypes.Field:
1547                         case MemberTypes.Method:
1548                         case MemberTypes.Property:
1549                         case MemberTypes.NestedType:
1550                                 return true;
1551
1552                         default:
1553                                 return false;
1554                         }
1555                 }
1556
1557                 /// <summary>
1558                 ///   We encode the MemberTypes and BindingFlags of each members in a "magic"
1559                 ///   number to speed up the searching process.
1560                 /// </summary>
1561                 [Flags]
1562                 protected enum EntryType {
1563                         None            = 0x000,
1564
1565                         Instance        = 0x001,
1566                         Static          = 0x002,
1567                         MaskStatic      = Instance|Static,
1568
1569                         Public          = 0x004,
1570                         NonPublic       = 0x008,
1571                         MaskProtection  = Public|NonPublic,
1572
1573                         Declared        = 0x010,
1574
1575                         Constructor     = 0x020,
1576                         Event           = 0x040,
1577                         Field           = 0x080,
1578                         Method          = 0x100,
1579                         Property        = 0x200,
1580                         NestedType      = 0x400,
1581
1582                         MaskType        = Constructor|Event|Field|Method|Property|NestedType
1583                 }
1584
1585                 protected struct CacheEntry {
1586                         public readonly IMemberContainer Container;
1587                         public readonly EntryType EntryType;
1588                         public readonly MemberInfo Member;
1589
1590                         public CacheEntry (IMemberContainer container, MemberInfo member,
1591                                            MemberTypes mt, BindingFlags bf)
1592                         {
1593                                 this.Container = container;
1594                                 this.Member = member;
1595                                 this.EntryType = GetEntryType (mt, bf);
1596                         }
1597
1598                         public override string ToString ()
1599                         {
1600                                 return String.Format ("CacheEntry ({0}:{1}:{2})", Container.Name,
1601                                                       EntryType, Member);
1602                         }
1603                 }
1604
1605                 /// <summary>
1606                 ///   This is called each time we're walking up one level in the class hierarchy
1607                 ///   and checks whether we can abort the search since we've already found what
1608                 ///   we were looking for.
1609                 /// </summary>
1610                 protected bool DoneSearching (ArrayList list)
1611                 {
1612                         //
1613                         // We've found exactly one member in the current class and it's not
1614                         // a method or constructor.
1615                         //
1616                         if (list.Count == 1 && !(list [0] is MethodBase))
1617                                 return true;
1618
1619                         //
1620                         // Multiple properties: we query those just to find out the indexer
1621                         // name
1622                         //
1623                         if ((list.Count > 0) && (list [0] is PropertyInfo))
1624                                 return true;
1625
1626                         return false;
1627                 }
1628
1629                 /// <summary>
1630                 ///   Looks up members with name `name'.  If you provide an optional
1631                 ///   filter function, it'll only be called with members matching the
1632                 ///   requested member name.
1633                 ///
1634                 ///   This method will try to use the cache to do the lookup if possible.
1635                 ///
1636                 ///   Unlike other FindMembers implementations, this method will always
1637                 ///   check all inherited members - even when called on an interface type.
1638                 ///
1639                 ///   If you know that you're only looking for methods, you should use
1640                 ///   MemberTypes.Method alone since this speeds up the lookup a bit.
1641                 ///   When doing a method-only search, it'll try to use a special method
1642                 ///   cache (unless it's a dynamic type or an interface) and the returned
1643                 ///   MemberInfo's will have the correct ReflectedType for inherited methods.
1644                 ///   The lookup process will automatically restart itself in method-only
1645                 ///   search mode if it discovers that it's about to return methods.
1646                 /// </summary>
1647                 ArrayList global = new ArrayList ();
1648                 bool using_global = false;
1649
1650                 static MemberInfo [] emptyMemberInfo = new MemberInfo [0];
1651
1652                 public MemberInfo [] FindMembers (MemberTypes mt, BindingFlags bf, string name,
1653                                                   MemberFilter filter, object criteria)
1654                 {
1655                         if (using_global)
1656                                 throw new Exception ();
1657
1658                         bool declared_only = (bf & BindingFlags.DeclaredOnly) != 0;
1659                         bool method_search = mt == MemberTypes.Method;
1660                         // If we have a method cache and we aren't already doing a method-only search,
1661                         // then we restart a method search if the first match is a method.
1662                         bool do_method_search = !method_search && (method_hash != null);
1663
1664                         ArrayList applicable;
1665
1666                         // If this is a method-only search, we try to use the method cache if
1667                         // possible; a lookup in the method cache will return a MemberInfo with
1668                         // the correct ReflectedType for inherited methods.
1669
1670                         if (method_search && (method_hash != null))
1671                                 applicable = (ArrayList) method_hash [name];
1672                         else
1673                                 applicable = (ArrayList) member_hash [name];
1674
1675                         if (applicable == null)
1676                                 return emptyMemberInfo;
1677
1678                         //
1679                         // 32  slots gives 53 rss/54 size
1680                         // 2/4 slots gives 55 rss
1681                         //
1682                         // Strange: from 25,000 calls, only 1,800
1683                         // are above 2.  Why does this impact it?
1684                         //
1685                         global.Clear ();
1686                         using_global = true;
1687
1688                         Timer.StartTimer (TimerType.CachedLookup);
1689
1690                         EntryType type = GetEntryType (mt, bf);
1691
1692                         IMemberContainer current = Container;
1693
1694
1695                         // `applicable' is a list of all members with the given member name `name'
1696                         // in the current class and all its parent classes.  The list is sorted in
1697                         // reverse order due to the way how the cache is initialy created (to speed
1698                         // things up, we're doing a deep-copy of our parent).
1699
1700                         for (int i = applicable.Count-1; i >= 0; i--) {
1701                                 CacheEntry entry = (CacheEntry) applicable [i];
1702
1703                                 // This happens each time we're walking one level up in the class
1704                                 // hierarchy.  If we're doing a DeclaredOnly search, we must abort
1705                                 // the first time this happens (this may already happen in the first
1706                                 // iteration of this loop if there are no members with the name we're
1707                                 // looking for in the current class).
1708                                 if (entry.Container != current) {
1709                                         if (declared_only || DoneSearching (global))
1710                                                 break;
1711
1712                                         current = entry.Container;
1713                                 }
1714
1715                                 // Is the member of the correct type ?
1716                                 if ((entry.EntryType & type & EntryType.MaskType) == 0)
1717                                         continue;
1718
1719                                 // Is the member static/non-static ?
1720                                 if ((entry.EntryType & type & EntryType.MaskStatic) == 0)
1721                                         continue;
1722
1723                                 // Apply the filter to it.
1724                                 if (filter (entry.Member, criteria)) {
1725                                         if ((entry.EntryType & EntryType.MaskType) != EntryType.Method)
1726                                                 do_method_search = false;
1727                                         global.Add (entry.Member);
1728                                 }
1729                         }
1730
1731                         Timer.StopTimer (TimerType.CachedLookup);
1732
1733                         // If we have a method cache and we aren't already doing a method-only
1734                         // search, we restart in method-only search mode if the first match is
1735                         // a method.  This ensures that we return a MemberInfo with the correct
1736                         // ReflectedType for inherited methods.
1737                         if (do_method_search && (global.Count > 0)){
1738                                 using_global = false;
1739
1740                                 return FindMembers (MemberTypes.Method, bf, name, filter, criteria);
1741                         }
1742
1743                         using_global = false;
1744                         MemberInfo [] copy = new MemberInfo [global.Count];
1745                         global.CopyTo (copy);
1746                         return copy;
1747                 }
1748
1749                 // find the nested type @name in @this.
1750                 public Type FindNestedType (string name)
1751                 {
1752                         ArrayList applicable = (ArrayList) member_hash [name];
1753                         if (applicable == null)
1754                                 return null;
1755
1756                         for (int i = applicable.Count-1; i >= 0; i--) {
1757                                 CacheEntry entry = (CacheEntry) applicable [i];
1758                                 if ((entry.EntryType & EntryType.NestedType & EntryType.MaskType) != 0)
1759                                         return (Type) entry.Member;
1760                         }
1761
1762                         return null;
1763                 }
1764
1765                 //
1766                 // This finds the method or property for us to override. invocationType is the type where
1767                 // the override is going to be declared, name is the name of the method/property, and
1768                 // paramTypes is the parameters, if any to the method or property
1769                 //
1770                 // Because the MemberCache holds members from this class and all the base classes,
1771                 // we can avoid tons of reflection stuff.
1772                 //
1773                 public MemberInfo FindMemberToOverride (Type invocationType, string name, Type [] paramTypes, bool is_property)
1774                 {
1775                         ArrayList applicable;
1776                         if (method_hash != null && !is_property)
1777                                 applicable = (ArrayList) method_hash [name];
1778                         else
1779                                 applicable = (ArrayList) member_hash [name];
1780
1781                         if (applicable == null)
1782                                 return null;
1783                         //
1784                         // Walk the chain of methods, starting from the top.
1785                         //
1786                         for (int i = applicable.Count - 1; i >= 0; i--) {
1787                                 CacheEntry entry = (CacheEntry) applicable [i];
1788
1789                                 if ((entry.EntryType & (is_property ? (EntryType.Property | EntryType.Field) : EntryType.Method)) == 0)
1790                                         continue;
1791
1792                                 PropertyInfo pi = null;
1793                                 MethodInfo mi = null;
1794                                 FieldInfo fi = null;
1795                                 Type [] cmpAttrs = null;
1796
1797                                 if (is_property) {
1798                                         if ((entry.EntryType & EntryType.Field) != 0) {
1799                                                 fi = (FieldInfo)entry.Member;
1800
1801                                                 // TODO: For this case we ignore member type
1802                                                 //fb = TypeManager.GetField (fi);
1803                                                 //cmpAttrs = new Type[] { fb.MemberType };
1804                                         } else {
1805                                                 pi = (PropertyInfo) entry.Member;
1806                                                 cmpAttrs = TypeManager.GetArgumentTypes (pi);
1807                                         }
1808                                 } else {
1809                                         mi = (MethodInfo) entry.Member;
1810                                         cmpAttrs = TypeManager.GetArgumentTypes (mi);
1811                                 }
1812
1813                                 if (fi != null) {
1814                                         // TODO: Almost duplicate !
1815                                         // Check visibility
1816                                         switch (fi.Attributes & FieldAttributes.FieldAccessMask) {
1817                                                 case FieldAttributes.Private:
1818                                                         //
1819                                                         // A private method is Ok if we are a nested subtype.
1820                                                         // The spec actually is not very clear about this, see bug 52458.
1821                                                         //
1822                                                         if (invocationType != entry.Container.Type &
1823                                                                 TypeManager.IsNestedChildOf (invocationType, entry.Container.Type))
1824                                                                 continue;
1825
1826                                                         break;
1827                                                 case FieldAttributes.FamANDAssem:
1828                                                 case FieldAttributes.Assembly:
1829                                                         //
1830                                                         // Check for assembly methods
1831                                                         //
1832                                                         if (mi.DeclaringType.Assembly != CodeGen.Assembly.Builder)
1833                                                                 continue;
1834                                                         break;
1835                                         }
1836                                         return entry.Member;
1837                                 }
1838
1839                                 //
1840                                 // Check the arguments
1841                                 //
1842                                 if (cmpAttrs.Length != paramTypes.Length)
1843                                         continue;
1844
1845                                 for (int j = cmpAttrs.Length - 1; j >= 0; j --)
1846                                         if (paramTypes [j] != cmpAttrs [j])
1847                                                 goto next;
1848
1849                                 //
1850                                 // get one of the methods because this has the visibility info.
1851                                 //
1852                                 if (is_property) {
1853                                         mi = pi.GetGetMethod (true);
1854                                         if (mi == null)
1855                                                 mi = pi.GetSetMethod (true);
1856                                 }
1857
1858                                 //
1859                                 // Check visibility
1860                                 //
1861                                 switch (mi.Attributes & MethodAttributes.MemberAccessMask) {
1862                                 case MethodAttributes.Private:
1863                                         //
1864                                         // A private method is Ok if we are a nested subtype.
1865                                         // The spec actually is not very clear about this, see bug 52458.
1866                                         //
1867                                         if (invocationType == entry.Container.Type ||
1868                                             TypeManager.IsNestedChildOf (invocationType, entry.Container.Type))
1869                                                 return entry.Member;
1870
1871                                         break;
1872                                 case MethodAttributes.FamANDAssem:
1873                                 case MethodAttributes.Assembly:
1874                                         //
1875                                         // Check for assembly methods
1876                                         //
1877                                         if (mi.DeclaringType.Assembly == CodeGen.Assembly.Builder)
1878                                                 return entry.Member;
1879
1880                                         break;
1881                                 default:
1882                                         //
1883                                         // A protected method is ok, because we are overriding.
1884                                         // public is always ok.
1885                                         //
1886                                         return entry.Member;
1887                                 }
1888                         next:
1889                                 ;
1890                         }
1891
1892                         return null;
1893                 }
1894
1895                 /// <summary>
1896                 /// The method is looking for conflict with inherited symbols (errors CS0108, CS0109).
1897                 /// We handle two cases. The first is for types without parameters (events, field, properties).
1898                 /// The second are methods, indexers and this is why ignore_complex_types is here.
1899                 /// The latest param is temporary hack. See DoDefineMembers method for more info.
1900                 /// </summary>
1901                 public MemberInfo FindMemberWithSameName (string name, bool ignore_complex_types, MemberInfo ignore_member)
1902                 {
1903                         ArrayList applicable = null;
1904
1905                         if (method_hash != null)
1906                                 applicable = (ArrayList) method_hash [name];
1907
1908                         if (applicable != null) {
1909                                 for (int i = applicable.Count - 1; i >= 0; i--) {
1910                                         CacheEntry entry = (CacheEntry) applicable [i];
1911                                         if ((entry.EntryType & EntryType.Public) != 0)
1912                                                 return entry.Member;
1913                                 }
1914                         }
1915
1916                         if (member_hash == null)
1917                                 return null;
1918                         applicable = (ArrayList) member_hash [name];
1919
1920                         if (applicable != null) {
1921                                 for (int i = applicable.Count - 1; i >= 0; i--) {
1922                                         CacheEntry entry = (CacheEntry) applicable [i];
1923                                         if ((entry.EntryType & EntryType.Public) != 0 & entry.Member != ignore_member) {
1924                                                 if (ignore_complex_types) {
1925                                                         if ((entry.EntryType & EntryType.Method) != 0)
1926                                                                 continue;
1927
1928                                                         // Does exist easier way how to detect indexer ?
1929                                                         if ((entry.EntryType & EntryType.Property) != 0) {
1930                                                                 Type[] arg_types = TypeManager.GetArgumentTypes ((PropertyInfo)entry.Member);
1931                                                                 if (arg_types.Length > 0)
1932                                                                         continue;
1933                                                         }
1934                                                 }
1935                                                 return entry.Member;
1936                                         }
1937                                 }
1938                         }
1939                         return null;
1940                 }
1941
1942                 Hashtable locase_table;
1943
1944                 /// <summary>
1945                 /// Builds low-case table for CLS Compliance test
1946                 /// </summary>
1947                 public Hashtable GetPublicMembers ()
1948                 {
1949                         if (locase_table != null)
1950                                 return locase_table;
1951
1952                         locase_table = new Hashtable ();
1953                         foreach (DictionaryEntry entry in member_hash) {
1954                                 ArrayList members = (ArrayList)entry.Value;
1955                                 for (int ii = 0; ii < members.Count; ++ii) {
1956                                         CacheEntry member_entry = (CacheEntry) members [ii];
1957
1958                                         if ((member_entry.EntryType & EntryType.Public) == 0)
1959                                                 continue;
1960
1961                                         // TODO: Does anyone know easier way how to detect that member is internal ?
1962                                         switch (member_entry.EntryType & EntryType.MaskType) {
1963                                                 case EntryType.Constructor:
1964                                                         continue;
1965
1966                                                 case EntryType.Field:
1967                                                         if ((((FieldInfo)member_entry.Member).Attributes & (FieldAttributes.Assembly | FieldAttributes.Public)) == FieldAttributes.Assembly)
1968                                                                 continue;
1969                                                         break;
1970
1971                                                 case EntryType.Method:
1972                                                         if ((((MethodInfo)member_entry.Member).Attributes & (MethodAttributes.Assembly | MethodAttributes.Public)) == MethodAttributes.Assembly)
1973                                                                 continue;
1974                                                         break;
1975
1976                                                 case EntryType.Property:
1977                                                         PropertyInfo pi = (PropertyInfo)member_entry.Member;
1978                                                         if (pi.GetSetMethod () == null && pi.GetGetMethod () == null)
1979                                                                 continue;
1980                                                         break;
1981
1982                                                 case EntryType.Event:
1983                                                         EventInfo ei = (EventInfo)member_entry.Member;
1984                                                         MethodInfo mi = ei.GetAddMethod ();
1985                                                         if ((mi.Attributes & (MethodAttributes.Assembly | MethodAttributes.Public)) == MethodAttributes.Assembly)
1986                                                                 continue;
1987                                                         break;
1988                                         }
1989                                         string lcase = ((string)entry.Key).ToLower (System.Globalization.CultureInfo.InvariantCulture);
1990                                         locase_table [lcase] = member_entry.Member;
1991                                         break;
1992                                 }
1993                         }
1994                         return locase_table;
1995                 }
1996
1997                 public Hashtable Members {
1998                         get {
1999                                 return member_hash;
2000                         }
2001                 }
2002
2003                 /// <summary>
2004                 /// Cls compliance check whether methods or constructors parameters differing only in ref or out, or in array rank
2005                 /// </summary>
2006                 public void VerifyClsParameterConflict (ArrayList al, MethodCore method, MemberInfo this_builder)
2007                 {
2008                         EntryType tested_type = (method is Constructor ? EntryType.Constructor : EntryType.Method) | EntryType.Public;
2009
2010                         for (int i = 0; i < al.Count; ++i) {
2011                                 MemberCache.CacheEntry entry = (MemberCache.CacheEntry) al [i];
2012
2013                                 // skip itself
2014                                 if (entry.Member == this_builder)
2015                                         continue;
2016
2017                                 if ((entry.EntryType & tested_type) != tested_type)
2018                                         continue;
2019
2020                                 MethodBase method_to_compare = (MethodBase)entry.Member;
2021                                 if (AttributeTester.AreOverloadedMethodParamsClsCompliant (method.ParameterTypes, TypeManager.GetArgumentTypes (method_to_compare)))
2022                                         continue;
2023
2024                                 IMethodData md = TypeManager.GetMethod (method_to_compare);
2025
2026                                 // TODO: now we are ignoring CLSCompliance(false) on method from other assembly which is buggy.
2027                                 // However it is exactly what csc does.
2028                                 if (md != null && !md.IsClsCompliaceRequired (method.Parent))
2029                                         continue;
2030
2031                                 Report.SymbolRelatedToPreviousError (entry.Member);
2032                                 Report.Error (3006, method.Location, "Overloaded method '{0}' differing only in ref or out, or in array rank, is not CLS-compliant", method.GetSignatureForError ());
2033                         }
2034                 }
2035         }
2036 }