2 // decl.cs: Declaration base class for structs, classes, enums and interfaces.
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Marek Safar (marek.safar@seznam.cz)
7 // Licensed under the terms of the GNU GPL
9 // (C) 2001 Ximian, Inc (http://www.ximian.com)
10 // (C) 2004 Novell, Inc
12 // TODO: Move the method verification stuff from the class.cs and interface.cs here
17 using System.Collections;
18 using System.Globalization;
19 using System.Reflection.Emit;
20 using System.Reflection;
23 namespace Mono.CSharp {
25 public class MemberName {
26 public readonly string Name;
27 public readonly TypeArguments TypeArguments;
29 public readonly MemberName Left;
30 public readonly Location Location;
32 public static readonly MemberName Null = new MemberName ("", Location.Null);
36 private MemberName (MemberName left, string name, bool is_double_colon,
37 TypeArguments args, Location loc)
41 this.is_double_colon = is_double_colon;
42 this.TypeArguments = args;
46 public MemberName (string name, TypeArguments args, Location loc)
49 this.TypeArguments = args;
52 public MemberName (string name, Location loc)
58 public MemberName (MemberName left, string name, Location loc)
64 public MemberName (MemberName left, string name, TypeArguments args, Location loc)
65 : this (name, args, loc)
70 public MemberName (string alias, string name, Location loc)
71 : this (new MemberName (alias, loc), name, true, null, loc)
75 public MemberName (MemberName left, MemberName right)
76 : this (left, right, left != null ? left.Location : right != null ? right.Location : Location.Null)
80 public MemberName (MemberName left, MemberName right, Location loc)
81 : this (null, right.Name, false, right.TypeArguments, loc)
83 if (right.is_double_colon)
84 throw new InternalErrorException ("Cannot append double_colon member name");
85 this.Left = (right.Left == null) ? left : new MemberName (left, right.Left);
88 static readonly char [] dot_array = { '.' };
90 public static MemberName FromDotted (string name, Location loc)
92 string [] elements = name.Split (dot_array);
93 int count = elements.Length;
95 MemberName n = new MemberName (elements [i++], loc);
97 n = new MemberName (n, elements [i++], loc);
101 public string GetName ()
103 string connect = is_double_colon ? "::" : ".";
105 return Left.GetName () + connect + Name;
110 public bool IsGeneric {
112 if (TypeArguments != null)
114 else if (Left != null)
115 return Left.IsGeneric;
121 public string GetName (bool is_generic)
123 string name = is_generic ? Basename : Name;
124 string connect = is_double_colon ? "::" : ".";
126 return Left.GetName (is_generic) + connect + name;
131 public int CountTypeArguments {
133 if (TypeArguments == null)
136 return TypeArguments.Count;
140 public string MethodName {
142 string connect = is_double_colon ? "::" : ".";
144 return Left.FullName + connect + Name;
150 public static string MakeName (string name, TypeArguments args)
155 return name + "`" + args.Count;
158 public static string MakeName (string name, int count)
160 return name + "`" + count;
163 public string GetTypeName ()
165 string connect = is_double_colon ? "::" : ".";
167 return Left.GetTypeName () + connect +
168 MakeName (Name, TypeArguments);
170 return MakeName (Name, TypeArguments);
173 protected bool IsUnbound {
175 if ((Left != null) && Left.IsUnbound)
177 else if (TypeArguments == null)
180 return TypeArguments.IsUnbound;
184 protected bool CheckUnbound (Location loc)
186 if ((Left != null) && !Left.CheckUnbound (loc))
188 if ((TypeArguments != null) && !TypeArguments.IsUnbound) {
189 Report.Error (1031, loc, "Type expected");
196 public Expression GetTypeExpression ()
199 if (!CheckUnbound (Location))
202 return new UnboundTypeExpression (this, Location);
206 if (TypeArguments != null)
207 return new SimpleName (Basename, TypeArguments, Location);
209 return new SimpleName (Name, Location);
212 if (is_double_colon) {
213 if (Left.Left != null)
214 throw new InternalErrorException ("The left side of a :: should be an identifier");
215 return new QualifiedAliasMember (Left.Name, Name, Location);
218 Expression lexpr = Left.GetTypeExpression ();
219 return new MemberAccess (lexpr, Name, TypeArguments, Location);
222 public MemberName Clone ()
224 MemberName left_clone = Left == null ? null : Left.Clone ();
225 return new MemberName (left_clone, Name, is_double_colon, TypeArguments, Location);
228 public string Basename {
230 if (TypeArguments != null)
231 return MakeName (Name, TypeArguments);
237 public string FullName {
239 if (TypeArguments != null)
240 return Name + "<" + TypeArguments + ">";
246 public override string ToString ()
248 string connect = is_double_colon ? "::" : ".";
250 return Left.FullName + connect + FullName;
255 public override bool Equals (object other)
257 return Equals (other as MemberName);
260 public bool Equals (MemberName other)
264 if (other == null || Name != other.Name)
266 if (is_double_colon != other.is_double_colon)
269 if ((TypeArguments != null) &&
270 (other.TypeArguments == null || TypeArguments.Count != other.TypeArguments.Count))
273 if ((TypeArguments == null) && (other.TypeArguments != null))
277 return other.Left == null;
279 return Left.Equals (other.Left);
282 public override int GetHashCode ()
284 int hash = Name.GetHashCode ();
285 for (MemberName n = Left; n != null; n = n.Left)
286 hash ^= n.Name.GetHashCode ();
290 if (TypeArguments != null)
291 hash ^= TypeArguments.Count << 5;
293 return hash & 0x7FFFFFFF;
298 /// Base representation for members. This is used to keep track
299 /// of Name, Location and Modifier flags, and handling Attributes.
301 public abstract class MemberCore : Attributable {
306 protected string cached_name;
309 if (cached_name == null)
310 cached_name = MemberName.GetName (!(this is GenericMethod) && !(this is Method));
315 // Is not readonly because of IndexerName attribute
316 private MemberName member_name;
317 public MemberName MemberName {
318 get { return member_name; }
322 /// Modifier flags that the user specified in the source code
326 public /*readonly*/ TypeContainer Parent;
329 /// Location where this declaration happens
331 public Location Location {
332 get { return member_name.Location; }
336 /// XML documentation comment
338 public string DocComment;
341 /// Represents header string for documentation comment
342 /// for each member types.
344 public abstract string DocCommentHeader { get; }
348 Obsolete_Undetected = 1, // Obsolete attribute has not been detected yet
349 Obsolete = 1 << 1, // Type has obsolete attribute
350 ClsCompliance_Undetected = 1 << 2, // CLS Compliance has not been detected yet
351 ClsCompliant = 1 << 3, // Type is CLS Compliant
352 CloseTypeCreated = 1 << 4, // Tracks whether we have Closed the type
353 HasCompliantAttribute_Undetected = 1 << 5, // Presence of CLSCompliantAttribute has not been detected
354 HasClsCompliantAttribute = 1 << 6, // Type has CLSCompliantAttribute
355 ClsCompliantAttributeTrue = 1 << 7, // Type has CLSCompliant (true)
356 Excluded_Undetected = 1 << 8, // Conditional attribute has not been detected yet
357 Excluded = 1 << 9, // Method is conditional
358 TestMethodDuplication = 1 << 10, // Test for duplication must be performed
360 IsAssigned = 1 << 12 // Field is assigned
364 /// MemberCore flags at first detected then cached
366 internal Flags caching_flags;
368 public MemberCore (TypeContainer parent, MemberName name, Attributes attrs)
371 if (parent is PartialContainer && !(this is PartialContainer))
372 throw new InternalErrorException ("A PartialContainer cannot be the direct parent of a member");
376 caching_flags = Flags.Obsolete_Undetected | Flags.ClsCompliance_Undetected | Flags.HasCompliantAttribute_Undetected | Flags.Excluded_Undetected;
379 protected virtual void SetMemberName (MemberName new_name)
381 member_name = new_name;
385 public abstract bool Define ();
388 // Returns full member name for error message
390 public virtual string GetSignatureForError ()
392 if (Parent == null || Parent.Parent == null)
395 return String.Concat (Parent.GetSignatureForError (), '.', Name);
399 /// Base Emit method. This is also entry point for CLS-Compliant verification.
401 public virtual void Emit ()
403 if (!RootContext.VerifyClsCompliance)
406 VerifyClsCompliance (Parent);
409 public virtual EmitContext EmitContext
412 return Parent.EmitContext;
416 public bool InUnsafe {
418 return ((ModFlags & Modifiers.UNSAFE) != 0) || Parent.UnsafeContext;
422 public virtual bool IsUsed {
424 return (caching_flags & Flags.IsUsed) != 0;
428 public void SetMemberIsUsed ()
430 caching_flags |= Flags.IsUsed;
434 // Whehter is it ok to use an unsafe pointer in this type container
436 public bool UnsafeOK (DeclSpace parent)
439 // First check if this MemberCore modifier flags has unsafe set
441 if ((ModFlags & Modifiers.UNSAFE) != 0)
444 if (parent.UnsafeContext)
447 Expression.UnsafeError (Location);
452 /// Returns instance of ObsoleteAttribute for this MemberCore
454 public virtual ObsoleteAttribute GetObsoleteAttribute ()
456 // ((flags & (Flags.Obsolete_Undetected | Flags.Obsolete)) == 0) is slower, but why ?
457 if ((caching_flags & Flags.Obsolete_Undetected) == 0 && (caching_flags & Flags.Obsolete) == 0) {
461 caching_flags &= ~Flags.Obsolete_Undetected;
463 if (OptAttributes == null)
466 Attribute obsolete_attr = OptAttributes.Search (
467 TypeManager.obsolete_attribute_type, EmitContext);
468 if (obsolete_attr == null)
471 ObsoleteAttribute obsolete = obsolete_attr.GetObsoleteAttribute (EmitContext);
472 if (obsolete == null)
475 caching_flags |= Flags.Obsolete;
480 /// Checks for ObsoleteAttribute presence. It's used for testing of all non-types elements
482 public virtual void CheckObsoleteness (Location loc)
485 Parent.CheckObsoleteness (loc);
487 ObsoleteAttribute oa = GetObsoleteAttribute ();
492 AttributeTester.Report_ObsoleteMessage (oa, GetSignatureForError (), loc);
495 protected void CheckObsoleteType (Expression type)
497 ObsoleteAttribute obsolete_attr = AttributeTester.GetObsoleteAttribute (type.Type);
498 if (obsolete_attr == null)
501 if (GetObsoleteAttribute () != null || Parent.GetObsoleteAttribute () != null)
504 AttributeTester.Report_ObsoleteMessage (obsolete_attr, TypeManager.CSharpName (type.Type), type.Location);
508 /// Analyze whether CLS-Compliant verification must be execute for this MemberCore.
510 public override bool IsClsComplianceRequired (DeclSpace container)
512 if ((caching_flags & Flags.ClsCompliance_Undetected) == 0)
513 return (caching_flags & Flags.ClsCompliant) != 0;
515 if (GetClsCompliantAttributeValue (container) && IsExposedFromAssembly (container)) {
516 caching_flags &= ~Flags.ClsCompliance_Undetected;
517 caching_flags |= Flags.ClsCompliant;
521 caching_flags &= ~Flags.ClsCompliance_Undetected;
526 /// Returns true when MemberCore is exposed from assembly.
528 public bool IsExposedFromAssembly (DeclSpace ds)
530 if ((ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) == 0)
533 DeclSpace parentContainer = ds;
534 while (parentContainer != null && parentContainer.ModFlags != 0) {
535 if ((parentContainer.ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) == 0)
537 parentContainer = parentContainer.Parent;
543 /// Resolve CLSCompliantAttribute value or gets cached value.
545 bool GetClsCompliantAttributeValue (DeclSpace ds)
547 if (OptAttributes != null) {
548 Attribute cls_attribute = OptAttributes.Search (
549 TypeManager.cls_compliant_attribute_type, ds.EmitContext);
550 if (cls_attribute != null) {
551 caching_flags |= Flags.HasClsCompliantAttribute;
552 return cls_attribute.GetClsCompliantAttributeValue (ds.EmitContext);
555 return ds.GetClsCompliantAttributeValue ();
559 /// Returns true if MemberCore is explicitly marked with CLSCompliantAttribute
561 protected bool HasClsCompliantAttribute {
563 return (caching_flags & Flags.HasClsCompliantAttribute) != 0;
568 /// It helps to handle error 102 & 111 detection
570 public virtual bool MarkForDuplicationCheck ()
576 /// The main virtual method for CLS-Compliant verifications.
577 /// The method returns true if member is CLS-Compliant and false if member is not
578 /// CLS-Compliant which means that CLS-Compliant tests are not necessary. A descendants override it
579 /// and add their extra verifications.
581 protected virtual bool VerifyClsCompliance (DeclSpace ds)
583 if (!IsClsComplianceRequired (ds)) {
584 if (HasClsCompliantAttribute && RootContext.WarningLevel >= 2) {
585 if (!IsExposedFromAssembly (ds))
586 Report.Warning (3019, Location, "CLS compliance checking will not be performed on `{0}' because it is not visible from outside this assembly", GetSignatureForError ());
587 if (!CodeGen.Assembly.IsClsCompliant)
588 Report.Warning (3021, Location, "`{0}' does not need a CLSCompliant attribute because the assembly is not marked as CLS-compliant", GetSignatureForError ());
593 if (!CodeGen.Assembly.IsClsCompliant) {
594 if (HasClsCompliantAttribute) {
595 Report.Error (3014, Location,
596 "`{0}' cannot be marked as CLS-compliant because the assembly is not marked as CLS-compliant",
597 GetSignatureForError ());
602 if (member_name.Name [0] == '_') {
603 Report.Error (3008, Location, "Identifier `{0}' is not CLS-compliant", GetSignatureForError () );
609 // Raised (and passed an XmlElement that contains the comment)
610 // when GenerateDocComment is writing documentation expectedly.
612 internal virtual void OnGenerateDocComment (DeclSpace ds, XmlElement intermediateNode)
617 // Returns a string that represents the signature for this
618 // member which should be used in XML documentation.
620 public virtual string GetDocCommentName (DeclSpace ds)
622 if (ds == null || this is DeclSpace)
623 return DocCommentHeader + Name;
625 return String.Concat (DocCommentHeader, ds.Name, ".", Name);
629 // Generates xml doc comments (if any), and if required,
630 // handle warning report.
632 internal virtual void GenerateDocComment (DeclSpace ds)
634 DocUtil.GenerateDocComment (this, ds);
639 /// Base class for structs, classes, enumerations and interfaces.
642 /// They all create new declaration spaces. This
643 /// provides the common foundation for managing those name
646 public abstract class DeclSpace : MemberCore {
648 /// This points to the actual definition that is being
649 /// created with System.Reflection.Emit
651 public TypeBuilder TypeBuilder;
654 /// If we are a generic type, this is the type we are
655 /// currently defining. We need to lookup members on this
656 /// instead of the TypeBuilder.
658 public Type CurrentType;
661 // This is the namespace in which this typecontainer
662 // was declared. We use this to resolve names.
664 public NamespaceEntry NamespaceEntry;
666 private Hashtable Cache = new Hashtable ();
668 public readonly string Basename;
670 protected Hashtable defined_names;
672 readonly bool is_generic;
673 readonly int count_type_params;
674 readonly int count_current_type_params;
676 // The emit context for toplevel objects.
677 protected EmitContext ec;
679 public override EmitContext EmitContext {
686 // Whether we are Generic
688 public bool IsGeneric {
692 else if (Parent != null)
693 return Parent.IsGeneric;
699 static string[] attribute_targets = new string [] { "type" };
701 public DeclSpace (NamespaceEntry ns, TypeContainer parent, MemberName name,
703 : base (parent, name, attrs)
706 Basename = name.Basename;
707 defined_names = new Hashtable ();
708 if (name.TypeArguments != null) {
710 count_type_params = count_current_type_params = name.TypeArguments.Count;
713 count_type_params += parent.count_type_params;
717 /// Adds the member to defined_names table. It tests for duplications and enclosing name conflicts
719 protected bool AddToContainer (MemberCore symbol, string name)
721 if (name == MemberName.Name && !(this is Interface) && !(this is Enum)) {
722 if (symbol is TypeParameter)
723 Report.Error (694, symbol.Location,
724 "Type parameter `{0}' has same name as " +
725 "containing type or method", name);
727 Report.SymbolRelatedToPreviousError (this);
728 Report.Error (542, symbol.Location,
729 "`{0}': member names cannot be the same " +
730 "as their enclosing type",
731 symbol.GetSignatureForError ());
736 MemberCore mc = (MemberCore) defined_names [name];
739 defined_names.Add (name, symbol);
743 if (symbol.MarkForDuplicationCheck () && mc.MarkForDuplicationCheck ())
746 Report.SymbolRelatedToPreviousError (mc);
747 if (symbol is PartialContainer || mc is PartialContainer) {
748 Report.Error (260, symbol.Location,
749 "Missing partial modifier on declaration of type `{0}'. Another partial declaration of this type exists",
754 if (this is RootTypes) {
755 Report.Error (101, symbol.Location,
756 "The namespace `{0}' already contains a definition for `{1}'",
757 ((DeclSpace)symbol).NamespaceEntry.GetSignatureForError (), symbol.MemberName.Name);
758 } else if (symbol is TypeParameter) {
759 Report.Error (692, symbol.Location,
760 "Duplicate type parameter `{0}'", name);
762 Report.Error (102, symbol.Location,
763 "The type `{0}' already contains a definition for `{1}'",
764 GetSignatureForError (), symbol.MemberName.Name);
771 /// Returns the MemberCore associated with a given name in the declaration
772 /// space. It doesn't return method based symbols !!
775 public MemberCore GetDefinition (string name)
777 return (MemberCore)defined_names [name];
781 // root_types contains all the types. All TopLevel types
782 // hence have a parent that points to `root_types', that is
783 // why there is a non-obvious test down here.
785 public bool IsTopLevel {
786 get { return (Parent != null && Parent.Parent == null); }
789 public virtual void CloseType ()
791 if ((caching_flags & Flags.CloseTypeCreated) == 0){
793 TypeBuilder.CreateType ();
796 // The try/catch is needed because
797 // nested enumerations fail to load when they
800 // Even if this is the right order (enumerations
801 // declared after types).
803 // Note that this still creates the type and
804 // it is possible to save it
806 caching_flags |= Flags.CloseTypeCreated;
810 protected virtual TypeAttributes TypeAttr {
811 get { return CodeGen.Module.DefaultCharSetType; }
815 /// Should be overriten by the appropriate declaration space
817 public abstract TypeBuilder DefineType ();
820 /// Define all members, but don't apply any attributes or do anything which may
821 /// access not-yet-defined classes. This method also creates the MemberCache.
823 public virtual bool DefineMembers (TypeContainer parent)
825 if (((ModFlags & Modifiers.NEW) != 0) && IsTopLevel) {
826 Report.Error (1530, Location, "Keyword `new' is not allowed on namespace elements");
832 public override string GetSignatureForError ()
834 // Parent.GetSignatureForError
839 // Whether this is an `unsafe context'
841 public bool UnsafeContext {
843 if ((ModFlags & Modifiers.UNSAFE) != 0)
846 return Parent.UnsafeContext;
851 EmitContext type_resolve_ec;
852 protected EmitContext TypeResolveEmitContext {
854 if (type_resolve_ec == null) {
855 // FIXME: I think this should really be one of:
857 // a. type_resolve_ec = Parent.EmitContext;
858 // b. type_resolve_ec = new EmitContext (Parent, Parent, loc, null, null, ModFlags, false);
860 // However, if Parent == RootContext.Tree.Types, its NamespaceEntry will be null.
862 type_resolve_ec = new EmitContext (Parent, this, Location.Null, null, null, ModFlags, false);
864 return type_resolve_ec;
869 // Resolves the expression `e' for a type, and will recursively define
870 // types. This should only be used for resolving base types.
872 protected TypeExpr ResolveBaseTypeExpr (Expression e, bool silent, Location loc)
874 TypeResolveEmitContext.loc = loc;
875 TypeResolveEmitContext.ResolvingTypeTree = true;
876 if (this is GenericMethod)
877 TypeResolveEmitContext.ContainerType = Parent.TypeBuilder;
878 return e.ResolveAsTypeTerminal (TypeResolveEmitContext);
881 public bool CheckAccessLevel (Type check_type)
884 if ((this is GenericMethod) || (this is Iterator))
885 tb = Parent.TypeBuilder;
889 if (check_type.IsGenericInstance)
890 check_type = check_type.GetGenericTypeDefinition ();
892 if (check_type == tb)
895 if (TypeBuilder == null)
896 // FIXME: TypeBuilder will be null when invoked by Class.GetNormalBases().
897 // However, this is invoked again later -- so safe to return true.
898 // May also be null when resolving top-level attributes.
901 if (check_type.IsGenericParameter)
902 return true; // FIXME
904 TypeAttributes check_attr = check_type.Attributes & TypeAttributes.VisibilityMask;
907 // Broken Microsoft runtime, return public for arrays, no matter what
908 // the accessibility is for their underlying class, and they return
909 // NonPublic visibility for pointers
911 if (check_type.IsArray || check_type.IsPointer)
912 return CheckAccessLevel (TypeManager.GetElementType (check_type));
915 case TypeAttributes.Public:
918 case TypeAttributes.NotPublic:
920 if (TypeBuilder == null)
921 // FIXME: TypeBuilder will be null when invoked by Class.GetNormalBases().
922 // However, this is invoked again later -- so safe to return true.
923 // May also be null when resolving top-level attributes.
926 // This test should probably use the declaringtype.
928 return check_type.Assembly == TypeBuilder.Assembly;
930 case TypeAttributes.NestedPublic:
933 case TypeAttributes.NestedPrivate:
934 return NestedAccessible (tb, check_type);
936 case TypeAttributes.NestedFamily:
938 // Only accessible to methods in current type or any subtypes
940 return FamilyAccessible (tb, check_type);
942 case TypeAttributes.NestedFamANDAssem:
943 return (check_type.Assembly == tb.Assembly) &&
944 FamilyAccessible (tb, check_type);
946 case TypeAttributes.NestedFamORAssem:
947 return (check_type.Assembly == tb.Assembly) ||
948 FamilyAccessible (tb, check_type);
950 case TypeAttributes.NestedAssembly:
951 return check_type.Assembly == tb.Assembly;
954 Console.WriteLine ("HERE: " + check_attr);
959 protected bool NestedAccessible (Type tb, Type check_type)
961 Type declaring = check_type.DeclaringType;
962 return TypeBuilder == declaring ||
963 TypeManager.IsNestedChildOf (TypeBuilder, declaring);
966 protected bool FamilyAccessible (Type tb, Type check_type)
968 Type declaring = check_type.DeclaringType;
969 return TypeManager.IsNestedFamilyAccessible (TypeBuilder, declaring);
972 // Access level of a type.
974 enum AccessLevel { // Each column represents `is this scope larger or equal to Blah scope'
975 // Public Assembly Protected
976 Protected = (0 << 0) | (0 << 1) | (X << 2),
977 Public = (X << 0) | (X << 1) | (X << 2),
978 Private = (0 << 0) | (0 << 1) | (0 << 2),
979 Internal = (0 << 0) | (X << 1) | (0 << 2),
980 ProtectedOrInternal = (0 << 0) | (X << 1) | (X << 2),
983 static AccessLevel GetAccessLevelFromModifiers (int flags)
985 if ((flags & Modifiers.INTERNAL) != 0) {
987 if ((flags & Modifiers.PROTECTED) != 0)
988 return AccessLevel.ProtectedOrInternal;
990 return AccessLevel.Internal;
992 } else if ((flags & Modifiers.PROTECTED) != 0)
993 return AccessLevel.Protected;
994 else if ((flags & Modifiers.PRIVATE) != 0)
995 return AccessLevel.Private;
997 return AccessLevel.Public;
1000 // What is the effective access level of this?
1001 // TODO: Cache this?
1002 AccessLevel EffectiveAccessLevel {
1004 AccessLevel myAccess = GetAccessLevelFromModifiers (ModFlags);
1005 if (!IsTopLevel && (Parent != null))
1006 return myAccess & Parent.EffectiveAccessLevel;
1011 // Return the access level for type `t'
1012 static AccessLevel TypeEffectiveAccessLevel (Type t)
1015 return AccessLevel.Public;
1016 if (t.IsNestedPrivate)
1017 return AccessLevel.Private;
1019 return AccessLevel.Internal;
1021 // By now, it must be nested
1022 AccessLevel parentLevel = TypeEffectiveAccessLevel (t.DeclaringType);
1024 if (t.IsNestedPublic)
1026 if (t.IsNestedAssembly)
1027 return parentLevel & AccessLevel.Internal;
1028 if (t.IsNestedFamily)
1029 return parentLevel & AccessLevel.Protected;
1030 if (t.IsNestedFamORAssem)
1031 return parentLevel & AccessLevel.ProtectedOrInternal;
1032 if (t.IsNestedFamANDAssem)
1033 throw new NotImplementedException ("NestedFamANDAssem not implemented, cant make this kind of type from c# anyways");
1035 // nested private is taken care of
1037 throw new Exception ("I give up, what are you?");
1041 // This answers `is the type P, as accessible as a member M which has the
1042 // accessability @flags which is declared as a nested member of the type T, this declspace'
1044 public bool AsAccessible (Type p, int flags)
1046 if (p.IsGenericParameter)
1047 return true; // FIXME
1050 // 1) if M is private, its accessability is the same as this declspace.
1051 // we already know that P is accessible to T before this method, so we
1055 if ((flags & Modifiers.PRIVATE) != 0)
1058 while (p.IsArray || p.IsPointer || p.IsByRef)
1059 p = TypeManager.GetElementType (p);
1061 AccessLevel pAccess = TypeEffectiveAccessLevel (p);
1062 AccessLevel mAccess = this.EffectiveAccessLevel &
1063 GetAccessLevelFromModifiers (flags);
1065 // for every place from which we can access M, we must
1066 // be able to access P as well. So, we want
1067 // For every bit in M and P, M_i -> P_1 == true
1068 // or, ~ (M -> P) == 0 <-> ~ ( ~M | P) == 0
1070 return ~ (~ mAccess | pAccess) == 0;
1074 // Return the nested type with name @name. Ensures that the nested type
1075 // is defined if necessary. Do _not_ use this when you have a MemberCache handy.
1077 public virtual Type FindNestedType (string name)
1082 private Type LookupNestedTypeInHierarchy (string name)
1084 // if the member cache has been created, lets use it.
1085 // the member cache is MUCH faster.
1086 if (MemberCache != null)
1087 return MemberCache.FindNestedType (name);
1089 // no member cache. Do it the hard way -- reflection
1091 for (Type current_type = TypeBuilder;
1092 current_type != null && current_type != TypeManager.object_type;
1093 current_type = current_type.BaseType) {
1094 if (current_type.IsGenericInstance)
1095 current_type = current_type.GetGenericTypeDefinition ();
1096 if (current_type is TypeBuilder) {
1097 DeclSpace decl = this;
1098 if (current_type != TypeBuilder)
1099 decl = TypeManager.LookupDeclSpace (current_type);
1100 t = decl.FindNestedType (name);
1102 t = TypeManager.GetNestedType (current_type, name);
1105 if (t != null && CheckAccessLevel (t))
1113 // Public function used to locate types.
1115 // Set 'ignore_cs0104' to true if you want to ignore cs0104 errors.
1117 // Returns: Type or null if they type can not be found.
1119 public FullNamedExpression LookupType (string name, Location loc, bool ignore_cs0104)
1121 if (this is PartialContainer)
1122 throw new InternalErrorException ("Should not get here");
1124 if (Cache.Contains (name))
1125 return (FullNamedExpression) Cache [name];
1127 FullNamedExpression e;
1128 Type t = LookupNestedTypeInHierarchy (name);
1130 e = new TypeExpression (t, Location.Null);
1131 else if (Parent != null && Parent != RootContext.Tree.Types)
1132 e = Parent.LookupType (name, loc, ignore_cs0104);
1134 e = NamespaceEntry.LookupNamespaceOrType (this, name, loc, ignore_cs0104);
1141 /// This function is broken and not what you're looking for. It should only
1142 /// be used while the type is still being created since it doesn't use the cache
1143 /// and relies on the filter doing the member name check.
1145 public abstract MemberList FindMembers (MemberTypes mt, BindingFlags bf,
1146 MemberFilter filter, object criteria);
1149 /// If we have a MemberCache, return it. This property may return null if the
1150 /// class doesn't have a member cache or while it's still being created.
1152 public abstract MemberCache MemberCache {
1156 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
1158 if (a.Type == TypeManager.required_attr_type) {
1159 Report.Error (1608, a.Location, "The RequiredAttribute attribute is not permitted on C# types");
1162 TypeBuilder.SetCustomAttribute (cb);
1166 /// Goes through class hierarchy and get value of first CLSCompliantAttribute that found.
1167 /// If no is attribute exists then return assembly CLSCompliantAttribute.
1169 public bool GetClsCompliantAttributeValue ()
1171 if ((caching_flags & Flags.HasCompliantAttribute_Undetected) == 0)
1172 return (caching_flags & Flags.ClsCompliantAttributeTrue) != 0;
1174 caching_flags &= ~Flags.HasCompliantAttribute_Undetected;
1176 if (OptAttributes != null) {
1177 Attribute cls_attribute = OptAttributes.Search (TypeManager.cls_compliant_attribute_type, ec);
1178 if (cls_attribute != null) {
1179 caching_flags |= Flags.HasClsCompliantAttribute;
1180 if (cls_attribute.GetClsCompliantAttributeValue (ec)) {
1181 caching_flags |= Flags.ClsCompliantAttributeTrue;
1188 if (Parent == null) {
1189 if (CodeGen.Assembly.IsClsCompliant) {
1190 caching_flags |= Flags.ClsCompliantAttributeTrue;
1196 if (Parent.GetClsCompliantAttributeValue ()) {
1197 caching_flags |= Flags.ClsCompliantAttributeTrue;
1204 // Extensions for generics
1206 TypeParameter[] type_params;
1207 TypeParameter[] type_param_list;
1209 protected string GetInstantiationName ()
1211 StringBuilder sb = new StringBuilder (Name);
1213 for (int i = 0; i < type_param_list.Length; i++) {
1216 sb.Append (type_param_list [i].Name);
1219 return sb.ToString ();
1222 bool check_type_parameter (ArrayList list, int start, string name)
1224 for (int i = 0; i < start; i++) {
1225 TypeParameter param = (TypeParameter) list [i];
1227 if (param.Name != name)
1230 if (RootContext.WarningLevel >= 3)
1233 "Type parameter `{0}' has same name " +
1234 "as type parameter from outer type `{1}'",
1235 name, Parent.GetInstantiationName ());
1243 TypeParameter[] initialize_type_params ()
1245 if (type_param_list != null)
1246 return type_param_list;
1248 DeclSpace the_parent = Parent;
1249 if (this is GenericMethod)
1253 TypeParameter[] parent_params = null;
1254 if ((the_parent != null) && the_parent.IsGeneric) {
1255 parent_params = the_parent.initialize_type_params ();
1256 start = parent_params != null ? parent_params.Length : 0;
1259 ArrayList list = new ArrayList ();
1260 if (parent_params != null)
1261 list.AddRange (parent_params);
1263 int count = type_params != null ? type_params.Length : 0;
1264 for (int i = 0; i < count; i++) {
1265 TypeParameter param = type_params [i];
1266 check_type_parameter (list, start, param.Name);
1270 type_param_list = new TypeParameter [list.Count];
1271 list.CopyTo (type_param_list, 0);
1272 return type_param_list;
1275 public virtual void SetParameterInfo (ArrayList constraints_list)
1278 if (constraints_list != null) {
1280 80, Location, "Contraints are not allowed " +
1281 "on non-generic declarations");
1287 string[] names = MemberName.TypeArguments.GetDeclarations ();
1288 type_params = new TypeParameter [names.Length];
1291 // Register all the names
1293 for (int i = 0; i < type_params.Length; i++) {
1294 string name = names [i];
1296 Constraints constraints = null;
1297 if (constraints_list != null) {
1298 foreach (Constraints constraint in constraints_list) {
1299 if (constraint == null)
1301 if (constraint.TypeParameter == name) {
1302 constraints = constraint;
1308 type_params [i] = new TypeParameter (
1309 Parent, this, name, constraints, Location);
1311 AddToContainer (type_params [i], name);
1315 public TypeParameter[] TypeParameters {
1318 throw new InvalidOperationException ();
1319 if (type_param_list == null)
1320 initialize_type_params ();
1322 return type_param_list;
1326 protected TypeParameter[] CurrentTypeParameters {
1329 throw new InvalidOperationException ();
1330 if (type_params != null)
1333 return new TypeParameter [0];
1337 public int CountTypeParameters {
1339 return count_type_params;
1343 public int CountCurrentTypeParameters {
1345 return count_current_type_params;
1349 public TypeParameterExpr LookupGeneric (string name, Location loc)
1354 foreach (TypeParameter type_param in CurrentTypeParameters) {
1355 if (type_param.Name != name)
1358 return new TypeParameterExpr (type_param, loc);
1362 return Parent.LookupGeneric (name, loc);
1367 public override string[] ValidAttributeTargets {
1368 get { return attribute_targets; }
1371 protected override bool VerifyClsCompliance (DeclSpace ds)
1373 if (!base.VerifyClsCompliance (ds)) {
1377 IDictionary cache = TypeManager.AllClsTopLevelTypes;
1378 string lcase = Name.ToLower (System.Globalization.CultureInfo.InvariantCulture);
1379 if (!cache.Contains (lcase)) {
1380 cache.Add (lcase, this);
1384 object val = cache [lcase];
1386 Type t = AttributeTester.GetImportedIgnoreCaseClsType (lcase);
1389 Report.SymbolRelatedToPreviousError (t);
1392 if (val is PartialContainer)
1395 Report.SymbolRelatedToPreviousError ((DeclSpace)val);
1397 Report.Warning (3005, Location, "Identifier `{0}' differing only in case is not CLS-compliant", GetSignatureForError ());
1403 /// This is a readonly list of MemberInfo's.
1405 public class MemberList : IList {
1406 public readonly IList List;
1410 /// Create a new MemberList from the given IList.
1412 public MemberList (IList list)
1417 this.List = new ArrayList ();
1422 /// Concatenate the ILists `first' and `second' to a new MemberList.
1424 public MemberList (IList first, IList second)
1426 ArrayList list = new ArrayList ();
1427 list.AddRange (first);
1428 list.AddRange (second);
1433 public static readonly MemberList Empty = new MemberList (new ArrayList ());
1436 /// Cast the MemberList into a MemberInfo[] array.
1439 /// This is an expensive operation, only use it if it's really necessary.
1441 public static explicit operator MemberInfo [] (MemberList list)
1443 Timer.StartTimer (TimerType.MiscTimer);
1444 MemberInfo [] result = new MemberInfo [list.Count];
1445 list.CopyTo (result, 0);
1446 Timer.StopTimer (TimerType.MiscTimer);
1458 public bool IsSynchronized {
1460 return List.IsSynchronized;
1464 public object SyncRoot {
1466 return List.SyncRoot;
1470 public void CopyTo (Array array, int index)
1472 List.CopyTo (array, index);
1477 public IEnumerator GetEnumerator ()
1479 return List.GetEnumerator ();
1484 public bool IsFixedSize {
1490 public bool IsReadOnly {
1496 object IList.this [int index] {
1498 return List [index];
1502 throw new NotSupportedException ();
1506 // FIXME: try to find out whether we can avoid the cast in this indexer.
1507 public MemberInfo this [int index] {
1509 return (MemberInfo) List [index];
1513 public int Add (object value)
1515 throw new NotSupportedException ();
1518 public void Clear ()
1520 throw new NotSupportedException ();
1523 public bool Contains (object value)
1525 return List.Contains (value);
1528 public int IndexOf (object value)
1530 return List.IndexOf (value);
1533 public void Insert (int index, object value)
1535 throw new NotSupportedException ();
1538 public void Remove (object value)
1540 throw new NotSupportedException ();
1543 public void RemoveAt (int index)
1545 throw new NotSupportedException ();
1550 /// This interface is used to get all members of a class when creating the
1551 /// member cache. It must be implemented by all DeclSpace derivatives which
1552 /// want to support the member cache and by TypeHandle to get caching of
1553 /// non-dynamic types.
1555 public interface IMemberContainer {
1557 /// The name of the IMemberContainer. This is only used for
1558 /// debugging purposes.
1565 /// The type of this IMemberContainer.
1572 /// Returns the IMemberContainer of the base class or null if this
1573 /// is an interface or TypeManger.object_type.
1574 /// This is used when creating the member cache for a class to get all
1575 /// members from the base class.
1577 MemberCache BaseCache {
1582 /// Whether this is an interface.
1589 /// Returns all members of this class with the corresponding MemberTypes
1590 /// and BindingFlags.
1593 /// When implementing this method, make sure not to return any inherited
1594 /// members and check the MemberTypes and BindingFlags properly.
1595 /// Unfortunately, System.Reflection is lame and doesn't provide a way to
1596 /// get the BindingFlags (static/non-static,public/non-public) in the
1597 /// MemberInfo class, but the cache needs this information. That's why
1598 /// this method is called multiple times with different BindingFlags.
1600 MemberList GetMembers (MemberTypes mt, BindingFlags bf);
1603 /// Return the container's member cache.
1605 MemberCache MemberCache {
1611 /// The MemberCache is used by dynamic and non-dynamic types to speed up
1612 /// member lookups. It has a member name based hash table; it maps each member
1613 /// name to a list of CacheEntry objects. Each CacheEntry contains a MemberInfo
1614 /// and the BindingFlags that were initially used to get it. The cache contains
1615 /// all members of the current class and all inherited members. If this cache is
1616 /// for an interface types, it also contains all inherited members.
1618 /// There are two ways to get a MemberCache:
1619 /// * if this is a dynamic type, lookup the corresponding DeclSpace and then
1620 /// use the DeclSpace.MemberCache property.
1621 /// * if this not a dynamic type, call TypeHandle.GetTypeHandle() to get a
1622 /// TypeHandle instance for the type and then use TypeHandle.MemberCache.
1624 public class MemberCache {
1625 public readonly IMemberContainer Container;
1626 protected Hashtable member_hash;
1627 protected Hashtable method_hash;
1630 /// Create a new MemberCache for the given IMemberContainer `container'.
1632 public MemberCache (IMemberContainer container)
1634 this.Container = container;
1636 Timer.IncrementCounter (CounterType.MemberCache);
1637 Timer.StartTimer (TimerType.CacheInit);
1639 // If we have a base class (we have a base class unless we're
1640 // TypeManager.object_type), we deep-copy its MemberCache here.
1641 if (Container.BaseCache != null)
1642 member_hash = SetupCache (Container.BaseCache);
1644 member_hash = new Hashtable ();
1646 // If this is neither a dynamic type nor an interface, create a special
1647 // method cache with all declared and inherited methods.
1648 Type type = container.Type;
1649 if (!(type is TypeBuilder) && !type.IsInterface &&
1650 // !(type.IsGenericInstance && (type.GetGenericTypeDefinition () is TypeBuilder)) &&
1651 !type.IsGenericInstance &&
1652 (Container.BaseCache == null || Container.BaseCache.method_hash != null)) {
1653 method_hash = new Hashtable ();
1657 // Add all members from the current class.
1658 AddMembers (Container);
1660 Timer.StopTimer (TimerType.CacheInit);
1663 public MemberCache (Type[] ifaces)
1666 // The members of this cache all belong to other caches.
1667 // So, 'Container' will not be used.
1669 this.Container = null;
1671 member_hash = new Hashtable ();
1675 foreach (Type itype in ifaces)
1676 AddCacheContents (TypeManager.LookupMemberCache (itype));
1680 /// Bootstrap this member cache by doing a deep-copy of our base.
1682 Hashtable SetupCache (MemberCache base_class)
1684 Hashtable hash = new Hashtable ();
1686 if (base_class == null)
1689 IDictionaryEnumerator it = base_class.member_hash.GetEnumerator ();
1690 while (it.MoveNext ()) {
1691 hash [it.Key] = ((ArrayList) it.Value).Clone ();
1698 /// Add the contents of `cache' to the member_hash.
1700 void AddCacheContents (MemberCache cache)
1702 IDictionaryEnumerator it = cache.member_hash.GetEnumerator ();
1703 while (it.MoveNext ()) {
1704 ArrayList list = (ArrayList) member_hash [it.Key];
1706 member_hash [it.Key] = list = new ArrayList ();
1708 ArrayList entries = (ArrayList) it.Value;
1709 for (int i = entries.Count-1; i >= 0; i--) {
1710 CacheEntry entry = (CacheEntry) entries [i];
1712 if (entry.Container != cache.Container)
1720 /// Add all members from class `container' to the cache.
1722 void AddMembers (IMemberContainer container)
1724 // We need to call AddMembers() with a single member type at a time
1725 // to get the member type part of CacheEntry.EntryType right.
1726 if (!container.IsInterface) {
1727 AddMembers (MemberTypes.Constructor, container);
1728 AddMembers (MemberTypes.Field, container);
1730 AddMembers (MemberTypes.Method, container);
1731 AddMembers (MemberTypes.Property, container);
1732 AddMembers (MemberTypes.Event, container);
1733 // Nested types are returned by both Static and Instance searches.
1734 AddMembers (MemberTypes.NestedType,
1735 BindingFlags.Static | BindingFlags.Public, container);
1736 AddMembers (MemberTypes.NestedType,
1737 BindingFlags.Static | BindingFlags.NonPublic, container);
1740 void AddMembers (MemberTypes mt, IMemberContainer container)
1742 AddMembers (mt, BindingFlags.Static | BindingFlags.Public, container);
1743 AddMembers (mt, BindingFlags.Static | BindingFlags.NonPublic, container);
1744 AddMembers (mt, BindingFlags.Instance | BindingFlags.Public, container);
1745 AddMembers (mt, BindingFlags.Instance | BindingFlags.NonPublic, container);
1749 /// Add all members from class `container' with the requested MemberTypes and
1750 /// BindingFlags to the cache. This method is called multiple times with different
1751 /// MemberTypes and BindingFlags.
1753 void AddMembers (MemberTypes mt, BindingFlags bf, IMemberContainer container)
1755 MemberList members = container.GetMembers (mt, bf);
1757 foreach (MemberInfo member in members) {
1758 string name = member.Name;
1760 int pos = name.IndexOf ('<');
1762 name = name.Substring (0, pos);
1764 // We use a name-based hash table of ArrayList's.
1765 ArrayList list = (ArrayList) member_hash [name];
1767 list = new ArrayList ();
1768 member_hash.Add (name, list);
1771 // When this method is called for the current class, the list will
1772 // already contain all inherited members from our base classes.
1773 // We cannot add new members in front of the list since this'd be an
1774 // expensive operation, that's why the list is sorted in reverse order
1775 // (ie. members from the current class are coming last).
1776 list.Add (new CacheEntry (container, member, mt, bf));
1781 /// Add all declared and inherited methods from class `type' to the method cache.
1783 void AddMethods (Type type)
1785 AddMethods (BindingFlags.Static | BindingFlags.Public |
1786 BindingFlags.FlattenHierarchy, type);
1787 AddMethods (BindingFlags.Static | BindingFlags.NonPublic |
1788 BindingFlags.FlattenHierarchy, type);
1789 AddMethods (BindingFlags.Instance | BindingFlags.Public, type);
1790 AddMethods (BindingFlags.Instance | BindingFlags.NonPublic, type);
1793 static ArrayList overrides = new ArrayList ();
1795 void AddMethods (BindingFlags bf, Type type)
1797 MethodBase [] members = type.GetMethods (bf);
1799 Array.Reverse (members);
1801 foreach (MethodBase member in members) {
1802 string name = member.Name;
1804 // We use a name-based hash table of ArrayList's.
1805 ArrayList list = (ArrayList) method_hash [name];
1807 list = new ArrayList ();
1808 method_hash.Add (name, list);
1811 MethodInfo curr = (MethodInfo) member;
1812 while (curr.IsVirtual && (curr.Attributes & MethodAttributes.NewSlot) == 0) {
1813 MethodInfo base_method = curr.GetBaseDefinition ();
1815 if (base_method == curr)
1816 // Not every virtual function needs to have a NewSlot flag.
1819 overrides.Add (curr);
1820 list.Add (new CacheEntry (null, base_method, MemberTypes.Method, bf));
1824 if (overrides.Count > 0) {
1825 for (int i = 0; i < overrides.Count; ++i)
1826 TypeManager.RegisterOverride ((MethodBase) overrides [i], curr);
1830 // Unfortunately, the elements returned by Type.GetMethods() aren't
1831 // sorted so we need to do this check for every member.
1832 BindingFlags new_bf = bf;
1833 if (member.DeclaringType == type)
1834 new_bf |= BindingFlags.DeclaredOnly;
1836 list.Add (new CacheEntry (Container, member, MemberTypes.Method, new_bf));
1841 /// Compute and return a appropriate `EntryType' magic number for the given
1842 /// MemberTypes and BindingFlags.
1844 protected static EntryType GetEntryType (MemberTypes mt, BindingFlags bf)
1846 EntryType type = EntryType.None;
1848 if ((mt & MemberTypes.Constructor) != 0)
1849 type |= EntryType.Constructor;
1850 if ((mt & MemberTypes.Event) != 0)
1851 type |= EntryType.Event;
1852 if ((mt & MemberTypes.Field) != 0)
1853 type |= EntryType.Field;
1854 if ((mt & MemberTypes.Method) != 0)
1855 type |= EntryType.Method;
1856 if ((mt & MemberTypes.Property) != 0)
1857 type |= EntryType.Property;
1858 // Nested types are returned by static and instance searches.
1859 if ((mt & MemberTypes.NestedType) != 0)
1860 type |= EntryType.NestedType | EntryType.Static | EntryType.Instance;
1862 if ((bf & BindingFlags.Instance) != 0)
1863 type |= EntryType.Instance;
1864 if ((bf & BindingFlags.Static) != 0)
1865 type |= EntryType.Static;
1866 if ((bf & BindingFlags.Public) != 0)
1867 type |= EntryType.Public;
1868 if ((bf & BindingFlags.NonPublic) != 0)
1869 type |= EntryType.NonPublic;
1870 if ((bf & BindingFlags.DeclaredOnly) != 0)
1871 type |= EntryType.Declared;
1877 /// The `MemberTypes' enumeration type is a [Flags] type which means that it may
1878 /// denote multiple member types. Returns true if the given flags value denotes a
1879 /// single member types.
1881 public static bool IsSingleMemberType (MemberTypes mt)
1884 case MemberTypes.Constructor:
1885 case MemberTypes.Event:
1886 case MemberTypes.Field:
1887 case MemberTypes.Method:
1888 case MemberTypes.Property:
1889 case MemberTypes.NestedType:
1898 /// We encode the MemberTypes and BindingFlags of each members in a "magic"
1899 /// number to speed up the searching process.
1902 protected enum EntryType {
1907 MaskStatic = Instance|Static,
1911 MaskProtection = Public|NonPublic,
1915 Constructor = 0x020,
1922 MaskType = Constructor|Event|Field|Method|Property|NestedType
1925 protected class CacheEntry {
1926 public readonly IMemberContainer Container;
1927 public EntryType EntryType;
1928 public MemberInfo Member;
1930 public CacheEntry (IMemberContainer container, MemberInfo member,
1931 MemberTypes mt, BindingFlags bf)
1933 this.Container = container;
1934 this.Member = member;
1935 this.EntryType = GetEntryType (mt, bf);
1938 public override string ToString ()
1940 return String.Format ("CacheEntry ({0}:{1}:{2})", Container.Name,
1946 /// This is called each time we're walking up one level in the class hierarchy
1947 /// and checks whether we can abort the search since we've already found what
1948 /// we were looking for.
1950 protected bool DoneSearching (ArrayList list)
1953 // We've found exactly one member in the current class and it's not
1954 // a method or constructor.
1956 if (list.Count == 1 && !(list [0] is MethodBase))
1960 // Multiple properties: we query those just to find out the indexer
1963 if ((list.Count > 0) && (list [0] is PropertyInfo))
1970 /// Looks up members with name `name'. If you provide an optional
1971 /// filter function, it'll only be called with members matching the
1972 /// requested member name.
1974 /// This method will try to use the cache to do the lookup if possible.
1976 /// Unlike other FindMembers implementations, this method will always
1977 /// check all inherited members - even when called on an interface type.
1979 /// If you know that you're only looking for methods, you should use
1980 /// MemberTypes.Method alone since this speeds up the lookup a bit.
1981 /// When doing a method-only search, it'll try to use a special method
1982 /// cache (unless it's a dynamic type or an interface) and the returned
1983 /// MemberInfo's will have the correct ReflectedType for inherited methods.
1984 /// The lookup process will automatically restart itself in method-only
1985 /// search mode if it discovers that it's about to return methods.
1987 ArrayList global = new ArrayList ();
1988 bool using_global = false;
1990 static MemberInfo [] emptyMemberInfo = new MemberInfo [0];
1992 public MemberInfo [] FindMembers (MemberTypes mt, BindingFlags bf, string name,
1993 MemberFilter filter, object criteria)
1996 throw new Exception ();
1998 bool declared_only = (bf & BindingFlags.DeclaredOnly) != 0;
1999 bool method_search = mt == MemberTypes.Method;
2000 // If we have a method cache and we aren't already doing a method-only search,
2001 // then we restart a method search if the first match is a method.
2002 bool do_method_search = !method_search && (method_hash != null);
2004 ArrayList applicable;
2006 // If this is a method-only search, we try to use the method cache if
2007 // possible; a lookup in the method cache will return a MemberInfo with
2008 // the correct ReflectedType for inherited methods.
2010 if (method_search && (method_hash != null))
2011 applicable = (ArrayList) method_hash [name];
2013 applicable = (ArrayList) member_hash [name];
2015 if (applicable == null)
2016 return emptyMemberInfo;
2019 // 32 slots gives 53 rss/54 size
2020 // 2/4 slots gives 55 rss
2022 // Strange: from 25,000 calls, only 1,800
2023 // are above 2. Why does this impact it?
2026 using_global = true;
2028 Timer.StartTimer (TimerType.CachedLookup);
2030 EntryType type = GetEntryType (mt, bf);
2032 IMemberContainer current = Container;
2035 // `applicable' is a list of all members with the given member name `name'
2036 // in the current class and all its base classes. The list is sorted in
2037 // reverse order due to the way how the cache is initialy created (to speed
2038 // things up, we're doing a deep-copy of our base).
2040 for (int i = applicable.Count-1; i >= 0; i--) {
2041 CacheEntry entry = (CacheEntry) applicable [i];
2043 // This happens each time we're walking one level up in the class
2044 // hierarchy. If we're doing a DeclaredOnly search, we must abort
2045 // the first time this happens (this may already happen in the first
2046 // iteration of this loop if there are no members with the name we're
2047 // looking for in the current class).
2048 if (entry.Container != current) {
2049 if (declared_only || DoneSearching (global))
2052 current = entry.Container;
2055 // Is the member of the correct type ?
2056 if ((entry.EntryType & type & EntryType.MaskType) == 0)
2059 // Is the member static/non-static ?
2060 if ((entry.EntryType & type & EntryType.MaskStatic) == 0)
2063 // Apply the filter to it.
2064 if (filter (entry.Member, criteria)) {
2065 if ((entry.EntryType & EntryType.MaskType) != EntryType.Method)
2066 do_method_search = false;
2067 global.Add (entry.Member);
2071 Timer.StopTimer (TimerType.CachedLookup);
2073 // If we have a method cache and we aren't already doing a method-only
2074 // search, we restart in method-only search mode if the first match is
2075 // a method. This ensures that we return a MemberInfo with the correct
2076 // ReflectedType for inherited methods.
2077 if (do_method_search && (global.Count > 0)){
2078 using_global = false;
2080 return FindMembers (MemberTypes.Method, bf, name, filter, criteria);
2083 using_global = false;
2084 MemberInfo [] copy = new MemberInfo [global.Count];
2085 global.CopyTo (copy);
2089 // find the nested type @name in @this.
2090 public Type FindNestedType (string name)
2092 ArrayList applicable = (ArrayList) member_hash [name];
2093 if (applicable == null)
2096 for (int i = applicable.Count-1; i >= 0; i--) {
2097 CacheEntry entry = (CacheEntry) applicable [i];
2098 if ((entry.EntryType & EntryType.NestedType & EntryType.MaskType) != 0)
2099 return (Type) entry.Member;
2106 // This finds the method or property for us to override. invocationType is the type where
2107 // the override is going to be declared, name is the name of the method/property, and
2108 // paramTypes is the parameters, if any to the method or property
2110 // Because the MemberCache holds members from this class and all the base classes,
2111 // we can avoid tons of reflection stuff.
2113 public MemberInfo FindMemberToOverride (Type invocationType, string name, Type [] paramTypes, GenericMethod genericMethod, bool is_property)
2115 ArrayList applicable;
2116 if (method_hash != null && !is_property)
2117 applicable = (ArrayList) method_hash [name];
2119 applicable = (ArrayList) member_hash [name];
2121 if (applicable == null)
2124 // Walk the chain of methods, starting from the top.
2126 for (int i = applicable.Count - 1; i >= 0; i--) {
2127 CacheEntry entry = (CacheEntry) applicable [i];
2129 if ((entry.EntryType & (is_property ? (EntryType.Property | EntryType.Field) : EntryType.Method)) == 0)
2132 PropertyInfo pi = null;
2133 MethodInfo mi = null;
2134 FieldInfo fi = null;
2135 Type [] cmpAttrs = null;
2138 if ((entry.EntryType & EntryType.Field) != 0) {
2139 fi = (FieldInfo)entry.Member;
2141 // TODO: For this case we ignore member type
2142 //fb = TypeManager.GetField (fi);
2143 //cmpAttrs = new Type[] { fb.MemberType };
2145 pi = (PropertyInfo) entry.Member;
2146 cmpAttrs = TypeManager.GetArgumentTypes (pi);
2149 mi = (MethodInfo) entry.Member;
2150 cmpAttrs = TypeManager.GetArgumentTypes (mi);
2154 // TODO: Almost duplicate !
2156 switch (fi.Attributes & FieldAttributes.FieldAccessMask) {
2157 case FieldAttributes.Private:
2159 // A private method is Ok if we are a nested subtype.
2160 // The spec actually is not very clear about this, see bug 52458.
2162 if (invocationType != entry.Container.Type &
2163 TypeManager.IsNestedChildOf (invocationType, entry.Container.Type))
2167 case FieldAttributes.FamANDAssem:
2168 case FieldAttributes.Assembly:
2170 // Check for assembly methods
2172 if (mi.DeclaringType.Assembly != CodeGen.Assembly.Builder)
2176 return entry.Member;
2180 // Check the arguments
2182 if (cmpAttrs.Length != paramTypes.Length)
2185 for (int j = cmpAttrs.Length - 1; j >= 0; j --) {
2186 if (!TypeManager.IsEqual (paramTypes [j], cmpAttrs [j]))
2191 // check generic arguments for methods
2194 Type [] cmpGenArgs = mi.GetGenericArguments ();
2195 if (genericMethod != null && cmpGenArgs.Length > 0) {
2196 if (genericMethod.TypeParameters.Length != cmpGenArgs.Length)
2199 else if (! (genericMethod == null && cmpGenArgs.Length == 0))
2204 // get one of the methods because this has the visibility info.
2207 mi = pi.GetGetMethod (true);
2209 mi = pi.GetSetMethod (true);
2215 switch (mi.Attributes & MethodAttributes.MemberAccessMask) {
2216 case MethodAttributes.Private:
2218 // A private method is Ok if we are a nested subtype.
2219 // The spec actually is not very clear about this, see bug 52458.
2221 if (invocationType.Equals (entry.Container.Type) ||
2222 TypeManager.IsNestedChildOf (invocationType, entry.Container.Type))
2223 return entry.Member;
2226 case MethodAttributes.FamANDAssem:
2227 case MethodAttributes.Assembly:
2229 // Check for assembly methods
2231 if (mi.DeclaringType.Assembly == CodeGen.Assembly.Builder)
2232 return entry.Member;
2237 // A protected method is ok, because we are overriding.
2238 // public is always ok.
2240 return entry.Member;
2250 /// The method is looking for conflict with inherited symbols (errors CS0108, CS0109).
2251 /// We handle two cases. The first is for types without parameters (events, field, properties).
2252 /// The second are methods, indexers and this is why ignore_complex_types is here.
2253 /// The latest param is temporary hack. See DoDefineMembers method for more info.
2255 public MemberInfo FindMemberWithSameName (string name, bool ignore_complex_types, MemberInfo ignore_member)
2257 ArrayList applicable = null;
2259 if (method_hash != null)
2260 applicable = (ArrayList) method_hash [name];
2262 if (applicable != null) {
2263 for (int i = applicable.Count - 1; i >= 0; i--) {
2264 CacheEntry entry = (CacheEntry) applicable [i];
2265 if ((entry.EntryType & EntryType.Public) != 0)
2266 return entry.Member;
2270 if (member_hash == null)
2272 applicable = (ArrayList) member_hash [name];
2274 if (applicable != null) {
2275 for (int i = applicable.Count - 1; i >= 0; i--) {
2276 CacheEntry entry = (CacheEntry) applicable [i];
2277 if ((entry.EntryType & EntryType.Public) != 0 & entry.Member != ignore_member) {
2278 if (ignore_complex_types) {
2279 if ((entry.EntryType & EntryType.Method) != 0)
2282 // Does exist easier way how to detect indexer ?
2283 if ((entry.EntryType & EntryType.Property) != 0) {
2284 Type[] arg_types = TypeManager.GetArgumentTypes ((PropertyInfo)entry.Member);
2285 if (arg_types.Length > 0)
2289 return entry.Member;
2296 Hashtable locase_table;
2299 /// Builds low-case table for CLS Compliance test
2301 public Hashtable GetPublicMembers ()
2303 if (locase_table != null)
2304 return locase_table;
2306 locase_table = new Hashtable ();
2307 foreach (DictionaryEntry entry in member_hash) {
2308 ArrayList members = (ArrayList)entry.Value;
2309 for (int ii = 0; ii < members.Count; ++ii) {
2310 CacheEntry member_entry = (CacheEntry) members [ii];
2312 if ((member_entry.EntryType & EntryType.Public) == 0)
2315 // TODO: Does anyone know easier way how to detect that member is internal ?
2316 switch (member_entry.EntryType & EntryType.MaskType) {
2317 case EntryType.Constructor:
2320 case EntryType.Field:
2321 if ((((FieldInfo)member_entry.Member).Attributes & (FieldAttributes.Assembly | FieldAttributes.Public)) == FieldAttributes.Assembly)
2325 case EntryType.Method:
2326 if ((((MethodInfo)member_entry.Member).Attributes & (MethodAttributes.Assembly | MethodAttributes.Public)) == MethodAttributes.Assembly)
2330 case EntryType.Property:
2331 PropertyInfo pi = (PropertyInfo)member_entry.Member;
2332 if (pi.GetSetMethod () == null && pi.GetGetMethod () == null)
2336 case EntryType.Event:
2337 EventInfo ei = (EventInfo)member_entry.Member;
2338 MethodInfo mi = ei.GetAddMethod ();
2339 if ((mi.Attributes & (MethodAttributes.Assembly | MethodAttributes.Public)) == MethodAttributes.Assembly)
2343 string lcase = ((string)entry.Key).ToLower (System.Globalization.CultureInfo.InvariantCulture);
2344 locase_table [lcase] = member_entry.Member;
2348 return locase_table;
2351 public Hashtable Members {
2358 /// Cls compliance check whether methods or constructors parameters differing only in ref or out, or in array rank
2360 public void VerifyClsParameterConflict (ArrayList al, MethodCore method, MemberInfo this_builder)
2362 EntryType tested_type = (method is Constructor ? EntryType.Constructor : EntryType.Method) | EntryType.Public;
2364 for (int i = 0; i < al.Count; ++i) {
2365 MemberCache.CacheEntry entry = (MemberCache.CacheEntry) al [i];
2368 if (entry.Member == this_builder)
2371 if ((entry.EntryType & tested_type) != tested_type)
2374 MethodBase method_to_compare = (MethodBase)entry.Member;
2375 AttributeTester.Result result = AttributeTester.AreOverloadedMethodParamsClsCompliant (
2376 method.ParameterTypes, TypeManager.GetArgumentTypes (method_to_compare));
2378 if (result == AttributeTester.Result.Ok)
2381 IMethodData md = TypeManager.GetMethod (method_to_compare);
2383 // TODO: now we are ignoring CLSCompliance(false) on method from other assembly which is buggy.
2384 // However it is exactly what csc does.
2385 if (md != null && !md.IsClsComplianceRequired (method.Parent))
2388 Report.SymbolRelatedToPreviousError (entry.Member);
2390 case AttributeTester.Result.RefOutArrayError:
2391 Report.Error (3006, method.Location, "Overloaded method `{0}' differing only in ref or out, or in array rank, is not CLS-compliant", method.GetSignatureForError ());
2393 case AttributeTester.Result.ArrayArrayError:
2394 Report.Error (3007, method.Location, "Overloaded method `{0}' differing only by unnamed array types is not CLS-compliant", method.GetSignatureForError ());
2398 throw new NotImplementedException (result.ToString ());