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, right.Location)
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, 2, 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, 2, 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 ()
835 return SimpleName.RemoveGenericArity (Name) + TypeParameter.GetSignatureForError (CurrentTypeParameters);
837 // Parent.GetSignatureForError
842 // Whether this is an `unsafe context'
844 public bool UnsafeContext {
846 if ((ModFlags & Modifiers.UNSAFE) != 0)
849 return Parent.UnsafeContext;
854 EmitContext type_resolve_ec;
855 protected EmitContext TypeResolveEmitContext {
857 if (type_resolve_ec == null) {
858 // FIXME: I think this should really be one of:
860 // a. type_resolve_ec = Parent.EmitContext;
861 // b. type_resolve_ec = new EmitContext (Parent, Parent, loc, null, null, ModFlags, false);
863 // However, if Parent == RootContext.Tree.Types, its NamespaceEntry will be null.
865 type_resolve_ec = new EmitContext (Parent, this, Location.Null, null, null, ModFlags, false);
867 return type_resolve_ec;
872 // Resolves the expression `e' for a type, and will recursively define
873 // types. This should only be used for resolving base types.
875 protected TypeExpr ResolveBaseTypeExpr (Expression e, bool silent, Location loc)
877 TypeResolveEmitContext.loc = loc;
878 TypeResolveEmitContext.ResolvingTypeTree = true;
879 if (this is GenericMethod)
880 TypeResolveEmitContext.ContainerType = Parent.TypeBuilder;
881 return e.ResolveAsTypeTerminal (TypeResolveEmitContext);
884 public bool CheckAccessLevel (Type check_type)
887 if ((this is GenericMethod) || (this is Iterator))
888 tb = Parent.TypeBuilder;
892 if (check_type.IsGenericInstance)
893 check_type = check_type.GetGenericTypeDefinition ();
895 if (check_type == tb)
898 if (TypeBuilder == null)
899 // FIXME: TypeBuilder will be null when invoked by Class.GetNormalBases().
900 // However, this is invoked again later -- so safe to return true.
901 // May also be null when resolving top-level attributes.
904 if (check_type.IsGenericParameter)
905 return true; // FIXME
907 TypeAttributes check_attr = check_type.Attributes & TypeAttributes.VisibilityMask;
910 // Broken Microsoft runtime, return public for arrays, no matter what
911 // the accessibility is for their underlying class, and they return
912 // NonPublic visibility for pointers
914 if (check_type.IsArray || check_type.IsPointer)
915 return CheckAccessLevel (TypeManager.GetElementType (check_type));
918 case TypeAttributes.Public:
921 case TypeAttributes.NotPublic:
923 if (TypeBuilder == null)
924 // FIXME: TypeBuilder will be null when invoked by Class.GetNormalBases().
925 // However, this is invoked again later -- so safe to return true.
926 // May also be null when resolving top-level attributes.
929 // This test should probably use the declaringtype.
931 return check_type.Assembly == TypeBuilder.Assembly ||
932 TypeManager.IsFriendAssembly (check_type.Assembly);
934 case TypeAttributes.NestedPublic:
937 case TypeAttributes.NestedPrivate:
938 return NestedAccessible (tb, check_type);
940 case TypeAttributes.NestedFamily:
942 // Only accessible to methods in current type or any subtypes
944 return FamilyAccessible (tb, check_type);
946 case TypeAttributes.NestedFamANDAssem:
947 return ((check_type.Assembly == tb.Assembly) ||
948 TypeManager.IsFriendAssembly (check_type.Assembly)) &&
949 FamilyAccessible (tb, check_type);
951 case TypeAttributes.NestedFamORAssem:
952 return (check_type.Assembly == tb.Assembly) ||
953 FamilyAccessible (tb, check_type) ||
954 TypeManager.IsFriendAssembly (check_type.Assembly);
956 case TypeAttributes.NestedAssembly:
957 return check_type.Assembly == tb.Assembly ||
958 TypeManager.IsFriendAssembly (check_type.Assembly);
961 Console.WriteLine ("HERE: " + check_attr);
966 protected bool NestedAccessible (Type tb, Type check_type)
968 Type declaring = check_type.DeclaringType;
969 return TypeBuilder == declaring ||
970 TypeManager.IsNestedChildOf (TypeBuilder, declaring);
973 protected bool FamilyAccessible (Type tb, Type check_type)
975 Type declaring = check_type.DeclaringType;
976 return TypeManager.IsNestedFamilyAccessible (TypeBuilder, declaring);
979 // Access level of a type.
981 enum AccessLevel { // Each column represents `is this scope larger or equal to Blah scope'
982 // Public Assembly Protected
983 Protected = (0 << 0) | (0 << 1) | (X << 2),
984 Public = (X << 0) | (X << 1) | (X << 2),
985 Private = (0 << 0) | (0 << 1) | (0 << 2),
986 Internal = (0 << 0) | (X << 1) | (0 << 2),
987 ProtectedOrInternal = (0 << 0) | (X << 1) | (X << 2),
990 static AccessLevel GetAccessLevelFromModifiers (int flags)
992 if ((flags & Modifiers.INTERNAL) != 0) {
994 if ((flags & Modifiers.PROTECTED) != 0)
995 return AccessLevel.ProtectedOrInternal;
997 return AccessLevel.Internal;
999 } else if ((flags & Modifiers.PROTECTED) != 0)
1000 return AccessLevel.Protected;
1001 else if ((flags & Modifiers.PRIVATE) != 0)
1002 return AccessLevel.Private;
1004 return AccessLevel.Public;
1007 // What is the effective access level of this?
1008 // TODO: Cache this?
1009 AccessLevel EffectiveAccessLevel {
1011 AccessLevel myAccess = GetAccessLevelFromModifiers (ModFlags);
1012 if (!IsTopLevel && (Parent != null))
1013 return myAccess & Parent.EffectiveAccessLevel;
1018 // Return the access level for type `t'
1019 static AccessLevel TypeEffectiveAccessLevel (Type t)
1022 return AccessLevel.Public;
1023 if (t.IsNestedPrivate)
1024 return AccessLevel.Private;
1026 return AccessLevel.Internal;
1028 // By now, it must be nested
1029 AccessLevel parentLevel = TypeEffectiveAccessLevel (t.DeclaringType);
1031 if (t.IsNestedPublic)
1033 if (t.IsNestedAssembly)
1034 return parentLevel & AccessLevel.Internal;
1035 if (t.IsNestedFamily)
1036 return parentLevel & AccessLevel.Protected;
1037 if (t.IsNestedFamORAssem)
1038 return parentLevel & AccessLevel.ProtectedOrInternal;
1039 if (t.IsNestedFamANDAssem)
1040 throw new NotImplementedException ("NestedFamANDAssem not implemented, cant make this kind of type from c# anyways");
1042 // nested private is taken care of
1044 throw new Exception ("I give up, what are you?");
1048 // This answers `is the type P, as accessible as a member M which has the
1049 // accessability @flags which is declared as a nested member of the type T, this declspace'
1051 public bool AsAccessible (Type p, int flags)
1053 if (p.IsGenericParameter)
1054 return true; // FIXME
1057 // 1) if M is private, its accessability is the same as this declspace.
1058 // we already know that P is accessible to T before this method, so we
1062 if ((flags & Modifiers.PRIVATE) != 0)
1065 while (p.IsArray || p.IsPointer || p.IsByRef)
1066 p = TypeManager.GetElementType (p);
1068 AccessLevel pAccess = TypeEffectiveAccessLevel (p);
1069 AccessLevel mAccess = this.EffectiveAccessLevel &
1070 GetAccessLevelFromModifiers (flags);
1072 // for every place from which we can access M, we must
1073 // be able to access P as well. So, we want
1074 // For every bit in M and P, M_i -> P_1 == true
1075 // or, ~ (M -> P) == 0 <-> ~ ( ~M | P) == 0
1077 return ~ (~ mAccess | pAccess) == 0;
1081 // Return the nested type with name @name. Ensures that the nested type
1082 // is defined if necessary. Do _not_ use this when you have a MemberCache handy.
1084 public virtual Type FindNestedType (string name)
1089 private Type LookupNestedTypeInHierarchy (string name)
1091 // if the member cache has been created, lets use it.
1092 // the member cache is MUCH faster.
1093 if (MemberCache != null)
1094 return MemberCache.FindNestedType (name);
1096 // no member cache. Do it the hard way -- reflection
1098 for (Type current_type = TypeBuilder;
1099 current_type != null && current_type != TypeManager.object_type;
1100 current_type = current_type.BaseType) {
1101 if (current_type.IsGenericInstance)
1102 current_type = current_type.GetGenericTypeDefinition ();
1103 if (current_type is TypeBuilder) {
1104 DeclSpace decl = this;
1105 if (current_type != TypeBuilder)
1106 decl = TypeManager.LookupDeclSpace (current_type);
1107 t = decl.FindNestedType (name);
1109 t = TypeManager.GetNestedType (current_type, name);
1112 if (t != null && CheckAccessLevel (t))
1120 // Public function used to locate types.
1122 // Set 'ignore_cs0104' to true if you want to ignore cs0104 errors.
1124 // Returns: Type or null if they type can not be found.
1126 public FullNamedExpression LookupType (string name, Location loc, bool ignore_cs0104)
1128 if (this is PartialContainer)
1129 throw new InternalErrorException ("Should not get here");
1131 if (Cache.Contains (name))
1132 return (FullNamedExpression) Cache [name];
1134 FullNamedExpression e;
1135 Type t = LookupNestedTypeInHierarchy (name);
1137 e = new TypeExpression (t, Location.Null);
1138 else if (Parent != null && Parent != RootContext.Tree.Types)
1139 e = Parent.LookupType (name, loc, ignore_cs0104);
1141 e = NamespaceEntry.LookupNamespaceOrType (this, name, loc, ignore_cs0104);
1148 /// This function is broken and not what you're looking for. It should only
1149 /// be used while the type is still being created since it doesn't use the cache
1150 /// and relies on the filter doing the member name check.
1152 public abstract MemberList FindMembers (MemberTypes mt, BindingFlags bf,
1153 MemberFilter filter, object criteria);
1156 /// If we have a MemberCache, return it. This property may return null if the
1157 /// class doesn't have a member cache or while it's still being created.
1159 public abstract MemberCache MemberCache {
1163 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
1165 if (a.Type == TypeManager.required_attr_type) {
1166 Report.Error (1608, a.Location, "The RequiredAttribute attribute is not permitted on C# types");
1169 TypeBuilder.SetCustomAttribute (cb);
1173 /// Goes through class hierarchy and get value of first CLSCompliantAttribute that found.
1174 /// If no is attribute exists then return assembly CLSCompliantAttribute.
1176 public bool GetClsCompliantAttributeValue ()
1178 if ((caching_flags & Flags.HasCompliantAttribute_Undetected) == 0)
1179 return (caching_flags & Flags.ClsCompliantAttributeTrue) != 0;
1181 caching_flags &= ~Flags.HasCompliantAttribute_Undetected;
1183 if (OptAttributes != null) {
1184 Attribute cls_attribute = OptAttributes.Search (TypeManager.cls_compliant_attribute_type, ec);
1185 if (cls_attribute != null) {
1186 caching_flags |= Flags.HasClsCompliantAttribute;
1187 if (cls_attribute.GetClsCompliantAttributeValue (ec)) {
1188 caching_flags |= Flags.ClsCompliantAttributeTrue;
1195 if (Parent == null) {
1196 if (CodeGen.Assembly.IsClsCompliant) {
1197 caching_flags |= Flags.ClsCompliantAttributeTrue;
1203 if (Parent.GetClsCompliantAttributeValue ()) {
1204 caching_flags |= Flags.ClsCompliantAttributeTrue;
1211 // Extensions for generics
1213 TypeParameter[] type_params;
1214 TypeParameter[] type_param_list;
1216 protected string GetInstantiationName ()
1218 StringBuilder sb = new StringBuilder (Name);
1220 for (int i = 0; i < type_param_list.Length; i++) {
1223 sb.Append (type_param_list [i].Name);
1226 return sb.ToString ();
1229 bool check_type_parameter (ArrayList list, int start, string name)
1231 for (int i = 0; i < start; i++) {
1232 TypeParameter param = (TypeParameter) list [i];
1234 if (param.Name != name)
1237 Report.Warning (693, 3, Location,
1238 "Type parameter `{0}' has same name as type parameter from outer type `{1}'",
1239 name, Parent.GetInstantiationName ());
1247 TypeParameter[] initialize_type_params ()
1249 if (type_param_list != null)
1250 return type_param_list;
1252 DeclSpace the_parent = Parent;
1253 if (this is GenericMethod)
1257 TypeParameter[] parent_params = null;
1258 if ((the_parent != null) && the_parent.IsGeneric) {
1259 parent_params = the_parent.initialize_type_params ();
1260 start = parent_params != null ? parent_params.Length : 0;
1263 ArrayList list = new ArrayList ();
1264 if (parent_params != null)
1265 list.AddRange (parent_params);
1267 int count = type_params != null ? type_params.Length : 0;
1268 for (int i = 0; i < count; i++) {
1269 TypeParameter param = type_params [i];
1270 check_type_parameter (list, start, param.Name);
1274 type_param_list = new TypeParameter [list.Count];
1275 list.CopyTo (type_param_list, 0);
1276 return type_param_list;
1279 public virtual void SetParameterInfo (ArrayList constraints_list)
1282 if (constraints_list != null) {
1284 80, Location, "Constraints are not allowed " +
1285 "on non-generic declarations");
1291 TypeParameterName[] names = MemberName.TypeArguments.GetDeclarations ();
1292 type_params = new TypeParameter [names.Length];
1295 // Register all the names
1297 for (int i = 0; i < type_params.Length; i++) {
1298 TypeParameterName name = names [i];
1300 Constraints constraints = null;
1301 if (constraints_list != null) {
1302 foreach (Constraints constraint in constraints_list) {
1303 if (constraint == null)
1305 if (constraint.TypeParameter == name.Name) {
1306 constraints = constraint;
1312 type_params [i] = new TypeParameter (
1313 Parent, this, name.Name, constraints, name.OptAttributes,
1316 AddToContainer (type_params [i], name.Name);
1320 public TypeParameter[] TypeParameters {
1323 throw new InvalidOperationException ();
1324 if (type_param_list == null)
1325 initialize_type_params ();
1327 return type_param_list;
1331 public TypeParameter[] CurrentTypeParameters {
1334 throw new InvalidOperationException ();
1335 if (type_params != null)
1338 return new TypeParameter [0];
1342 public int CountTypeParameters {
1344 return count_type_params;
1348 public int CountCurrentTypeParameters {
1350 return count_current_type_params;
1354 public TypeParameterExpr LookupGeneric (string name, Location loc)
1359 foreach (TypeParameter type_param in CurrentTypeParameters) {
1360 if (type_param.Name != name)
1363 return new TypeParameterExpr (type_param, loc);
1367 return Parent.LookupGeneric (name, loc);
1372 public override string[] ValidAttributeTargets {
1373 get { return attribute_targets; }
1376 protected override bool VerifyClsCompliance (DeclSpace ds)
1378 if (!base.VerifyClsCompliance (ds)) {
1382 IDictionary cache = TypeManager.AllClsTopLevelTypes;
1383 string lcase = Name.ToLower (System.Globalization.CultureInfo.InvariantCulture);
1384 if (!cache.Contains (lcase)) {
1385 cache.Add (lcase, this);
1389 object val = cache [lcase];
1391 Type t = AttributeTester.GetImportedIgnoreCaseClsType (lcase);
1394 Report.SymbolRelatedToPreviousError (t);
1397 if (val is PartialContainer)
1400 Report.SymbolRelatedToPreviousError ((DeclSpace)val);
1402 Report.Warning (3005, 1, Location, "Identifier `{0}' differing only in case is not CLS-compliant", GetSignatureForError ());
1408 /// This is a readonly list of MemberInfo's.
1410 public class MemberList : IList {
1411 public readonly IList List;
1415 /// Create a new MemberList from the given IList.
1417 public MemberList (IList list)
1422 this.List = new ArrayList ();
1427 /// Concatenate the ILists `first' and `second' to a new MemberList.
1429 public MemberList (IList first, IList second)
1431 ArrayList list = new ArrayList ();
1432 list.AddRange (first);
1433 list.AddRange (second);
1438 public static readonly MemberList Empty = new MemberList (new ArrayList ());
1441 /// Cast the MemberList into a MemberInfo[] array.
1444 /// This is an expensive operation, only use it if it's really necessary.
1446 public static explicit operator MemberInfo [] (MemberList list)
1448 Timer.StartTimer (TimerType.MiscTimer);
1449 MemberInfo [] result = new MemberInfo [list.Count];
1450 list.CopyTo (result, 0);
1451 Timer.StopTimer (TimerType.MiscTimer);
1463 public bool IsSynchronized {
1465 return List.IsSynchronized;
1469 public object SyncRoot {
1471 return List.SyncRoot;
1475 public void CopyTo (Array array, int index)
1477 List.CopyTo (array, index);
1482 public IEnumerator GetEnumerator ()
1484 return List.GetEnumerator ();
1489 public bool IsFixedSize {
1495 public bool IsReadOnly {
1501 object IList.this [int index] {
1503 return List [index];
1507 throw new NotSupportedException ();
1511 // FIXME: try to find out whether we can avoid the cast in this indexer.
1512 public MemberInfo this [int index] {
1514 return (MemberInfo) List [index];
1518 public int Add (object value)
1520 throw new NotSupportedException ();
1523 public void Clear ()
1525 throw new NotSupportedException ();
1528 public bool Contains (object value)
1530 return List.Contains (value);
1533 public int IndexOf (object value)
1535 return List.IndexOf (value);
1538 public void Insert (int index, object value)
1540 throw new NotSupportedException ();
1543 public void Remove (object value)
1545 throw new NotSupportedException ();
1548 public void RemoveAt (int index)
1550 throw new NotSupportedException ();
1555 /// This interface is used to get all members of a class when creating the
1556 /// member cache. It must be implemented by all DeclSpace derivatives which
1557 /// want to support the member cache and by TypeHandle to get caching of
1558 /// non-dynamic types.
1560 public interface IMemberContainer {
1562 /// The name of the IMemberContainer. This is only used for
1563 /// debugging purposes.
1570 /// The type of this IMemberContainer.
1577 /// Returns the IMemberContainer of the base class or null if this
1578 /// is an interface or TypeManger.object_type.
1579 /// This is used when creating the member cache for a class to get all
1580 /// members from the base class.
1582 MemberCache BaseCache {
1587 /// Whether this is an interface.
1594 /// Returns all members of this class with the corresponding MemberTypes
1595 /// and BindingFlags.
1598 /// When implementing this method, make sure not to return any inherited
1599 /// members and check the MemberTypes and BindingFlags properly.
1600 /// Unfortunately, System.Reflection is lame and doesn't provide a way to
1601 /// get the BindingFlags (static/non-static,public/non-public) in the
1602 /// MemberInfo class, but the cache needs this information. That's why
1603 /// this method is called multiple times with different BindingFlags.
1605 MemberList GetMembers (MemberTypes mt, BindingFlags bf);
1608 /// Return the container's member cache.
1610 MemberCache MemberCache {
1616 /// The MemberCache is used by dynamic and non-dynamic types to speed up
1617 /// member lookups. It has a member name based hash table; it maps each member
1618 /// name to a list of CacheEntry objects. Each CacheEntry contains a MemberInfo
1619 /// and the BindingFlags that were initially used to get it. The cache contains
1620 /// all members of the current class and all inherited members. If this cache is
1621 /// for an interface types, it also contains all inherited members.
1623 /// There are two ways to get a MemberCache:
1624 /// * if this is a dynamic type, lookup the corresponding DeclSpace and then
1625 /// use the DeclSpace.MemberCache property.
1626 /// * if this not a dynamic type, call TypeHandle.GetTypeHandle() to get a
1627 /// TypeHandle instance for the type and then use TypeHandle.MemberCache.
1629 public class MemberCache {
1630 public readonly IMemberContainer Container;
1631 protected Hashtable member_hash;
1632 protected Hashtable method_hash;
1635 /// Create a new MemberCache for the given IMemberContainer `container'.
1637 public MemberCache (IMemberContainer container)
1639 this.Container = container;
1641 Timer.IncrementCounter (CounterType.MemberCache);
1642 Timer.StartTimer (TimerType.CacheInit);
1644 // If we have a base class (we have a base class unless we're
1645 // TypeManager.object_type), we deep-copy its MemberCache here.
1646 if (Container.BaseCache != null)
1647 member_hash = SetupCache (Container.BaseCache);
1649 member_hash = new Hashtable ();
1651 // If this is neither a dynamic type nor an interface, create a special
1652 // method cache with all declared and inherited methods.
1653 Type type = container.Type;
1654 if (!(type is TypeBuilder) && !type.IsInterface &&
1655 // !(type.IsGenericInstance && (type.GetGenericTypeDefinition () is TypeBuilder)) &&
1656 !type.IsGenericInstance &&
1657 (Container.BaseCache == null || Container.BaseCache.method_hash != null)) {
1658 method_hash = new Hashtable ();
1662 // Add all members from the current class.
1663 AddMembers (Container);
1665 Timer.StopTimer (TimerType.CacheInit);
1668 public MemberCache (Type[] ifaces)
1671 // The members of this cache all belong to other caches.
1672 // So, 'Container' will not be used.
1674 this.Container = null;
1676 member_hash = new Hashtable ();
1680 foreach (Type itype in ifaces)
1681 AddCacheContents (TypeManager.LookupMemberCache (itype));
1685 /// Bootstrap this member cache by doing a deep-copy of our base.
1687 Hashtable SetupCache (MemberCache base_class)
1689 Hashtable hash = new Hashtable ();
1691 if (base_class == null)
1694 IDictionaryEnumerator it = base_class.member_hash.GetEnumerator ();
1695 while (it.MoveNext ()) {
1696 hash [it.Key] = ((ArrayList) it.Value).Clone ();
1703 /// Add the contents of `cache' to the member_hash.
1705 void AddCacheContents (MemberCache cache)
1707 IDictionaryEnumerator it = cache.member_hash.GetEnumerator ();
1708 while (it.MoveNext ()) {
1709 ArrayList list = (ArrayList) member_hash [it.Key];
1711 member_hash [it.Key] = list = new ArrayList ();
1713 ArrayList entries = (ArrayList) it.Value;
1714 for (int i = entries.Count-1; i >= 0; i--) {
1715 CacheEntry entry = (CacheEntry) entries [i];
1717 if (entry.Container != cache.Container)
1725 /// Add all members from class `container' to the cache.
1727 void AddMembers (IMemberContainer container)
1729 // We need to call AddMembers() with a single member type at a time
1730 // to get the member type part of CacheEntry.EntryType right.
1731 if (!container.IsInterface) {
1732 AddMembers (MemberTypes.Constructor, container);
1733 AddMembers (MemberTypes.Field, container);
1735 AddMembers (MemberTypes.Method, container);
1736 AddMembers (MemberTypes.Property, container);
1737 AddMembers (MemberTypes.Event, container);
1738 // Nested types are returned by both Static and Instance searches.
1739 AddMembers (MemberTypes.NestedType,
1740 BindingFlags.Static | BindingFlags.Public, container);
1741 AddMembers (MemberTypes.NestedType,
1742 BindingFlags.Static | BindingFlags.NonPublic, container);
1745 void AddMembers (MemberTypes mt, IMemberContainer container)
1747 AddMembers (mt, BindingFlags.Static | BindingFlags.Public, container);
1748 AddMembers (mt, BindingFlags.Static | BindingFlags.NonPublic, container);
1749 AddMembers (mt, BindingFlags.Instance | BindingFlags.Public, container);
1750 AddMembers (mt, BindingFlags.Instance | BindingFlags.NonPublic, container);
1754 /// Add all members from class `container' with the requested MemberTypes and
1755 /// BindingFlags to the cache. This method is called multiple times with different
1756 /// MemberTypes and BindingFlags.
1758 void AddMembers (MemberTypes mt, BindingFlags bf, IMemberContainer container)
1760 MemberList members = container.GetMembers (mt, bf);
1762 foreach (MemberInfo member in members) {
1763 string name = member.Name;
1765 int pos = name.IndexOf ('<');
1767 name = name.Substring (0, pos);
1769 // We use a name-based hash table of ArrayList's.
1770 ArrayList list = (ArrayList) member_hash [name];
1772 list = new ArrayList ();
1773 member_hash.Add (name, list);
1776 // When this method is called for the current class, the list will
1777 // already contain all inherited members from our base classes.
1778 // We cannot add new members in front of the list since this'd be an
1779 // expensive operation, that's why the list is sorted in reverse order
1780 // (ie. members from the current class are coming last).
1781 list.Add (new CacheEntry (container, member, mt, bf));
1786 /// Add all declared and inherited methods from class `type' to the method cache.
1788 void AddMethods (Type type)
1790 AddMethods (BindingFlags.Static | BindingFlags.Public |
1791 BindingFlags.FlattenHierarchy, type);
1792 AddMethods (BindingFlags.Static | BindingFlags.NonPublic |
1793 BindingFlags.FlattenHierarchy, type);
1794 AddMethods (BindingFlags.Instance | BindingFlags.Public, type);
1795 AddMethods (BindingFlags.Instance | BindingFlags.NonPublic, type);
1798 static ArrayList overrides = new ArrayList ();
1800 void AddMethods (BindingFlags bf, Type type)
1802 MethodBase [] members = type.GetMethods (bf);
1804 Array.Reverse (members);
1806 foreach (MethodBase member in members) {
1807 string name = member.Name;
1809 // We use a name-based hash table of ArrayList's.
1810 ArrayList list = (ArrayList) method_hash [name];
1812 list = new ArrayList ();
1813 method_hash.Add (name, list);
1816 MethodInfo curr = (MethodInfo) member;
1817 while (curr.IsVirtual && (curr.Attributes & MethodAttributes.NewSlot) == 0) {
1818 MethodInfo base_method = curr.GetBaseDefinition ();
1820 if (base_method == curr)
1821 // Not every virtual function needs to have a NewSlot flag.
1824 overrides.Add (curr);
1825 list.Add (new CacheEntry (null, base_method, MemberTypes.Method, bf));
1829 if (overrides.Count > 0) {
1830 for (int i = 0; i < overrides.Count; ++i)
1831 TypeManager.RegisterOverride ((MethodBase) overrides [i], curr);
1835 // Unfortunately, the elements returned by Type.GetMethods() aren't
1836 // sorted so we need to do this check for every member.
1837 BindingFlags new_bf = bf;
1838 if (member.DeclaringType == type)
1839 new_bf |= BindingFlags.DeclaredOnly;
1841 list.Add (new CacheEntry (Container, member, MemberTypes.Method, new_bf));
1846 /// Compute and return a appropriate `EntryType' magic number for the given
1847 /// MemberTypes and BindingFlags.
1849 protected static EntryType GetEntryType (MemberTypes mt, BindingFlags bf)
1851 EntryType type = EntryType.None;
1853 if ((mt & MemberTypes.Constructor) != 0)
1854 type |= EntryType.Constructor;
1855 if ((mt & MemberTypes.Event) != 0)
1856 type |= EntryType.Event;
1857 if ((mt & MemberTypes.Field) != 0)
1858 type |= EntryType.Field;
1859 if ((mt & MemberTypes.Method) != 0)
1860 type |= EntryType.Method;
1861 if ((mt & MemberTypes.Property) != 0)
1862 type |= EntryType.Property;
1863 // Nested types are returned by static and instance searches.
1864 if ((mt & MemberTypes.NestedType) != 0)
1865 type |= EntryType.NestedType | EntryType.Static | EntryType.Instance;
1867 if ((bf & BindingFlags.Instance) != 0)
1868 type |= EntryType.Instance;
1869 if ((bf & BindingFlags.Static) != 0)
1870 type |= EntryType.Static;
1871 if ((bf & BindingFlags.Public) != 0)
1872 type |= EntryType.Public;
1873 if ((bf & BindingFlags.NonPublic) != 0)
1874 type |= EntryType.NonPublic;
1875 if ((bf & BindingFlags.DeclaredOnly) != 0)
1876 type |= EntryType.Declared;
1882 /// The `MemberTypes' enumeration type is a [Flags] type which means that it may
1883 /// denote multiple member types. Returns true if the given flags value denotes a
1884 /// single member types.
1886 public static bool IsSingleMemberType (MemberTypes mt)
1889 case MemberTypes.Constructor:
1890 case MemberTypes.Event:
1891 case MemberTypes.Field:
1892 case MemberTypes.Method:
1893 case MemberTypes.Property:
1894 case MemberTypes.NestedType:
1903 /// We encode the MemberTypes and BindingFlags of each members in a "magic"
1904 /// number to speed up the searching process.
1907 protected enum EntryType {
1912 MaskStatic = Instance|Static,
1916 MaskProtection = Public|NonPublic,
1920 Constructor = 0x020,
1927 MaskType = Constructor|Event|Field|Method|Property|NestedType
1930 protected class CacheEntry {
1931 public readonly IMemberContainer Container;
1932 public EntryType EntryType;
1933 public MemberInfo Member;
1935 public CacheEntry (IMemberContainer container, MemberInfo member,
1936 MemberTypes mt, BindingFlags bf)
1938 this.Container = container;
1939 this.Member = member;
1940 this.EntryType = GetEntryType (mt, bf);
1943 public override string ToString ()
1945 return String.Format ("CacheEntry ({0}:{1}:{2})", Container.Name,
1951 /// This is called each time we're walking up one level in the class hierarchy
1952 /// and checks whether we can abort the search since we've already found what
1953 /// we were looking for.
1955 protected bool DoneSearching (ArrayList list)
1958 // We've found exactly one member in the current class and it's not
1959 // a method or constructor.
1961 if (list.Count == 1 && !(list [0] is MethodBase))
1965 // Multiple properties: we query those just to find out the indexer
1968 if ((list.Count > 0) && (list [0] is PropertyInfo))
1975 /// Looks up members with name `name'. If you provide an optional
1976 /// filter function, it'll only be called with members matching the
1977 /// requested member name.
1979 /// This method will try to use the cache to do the lookup if possible.
1981 /// Unlike other FindMembers implementations, this method will always
1982 /// check all inherited members - even when called on an interface type.
1984 /// If you know that you're only looking for methods, you should use
1985 /// MemberTypes.Method alone since this speeds up the lookup a bit.
1986 /// When doing a method-only search, it'll try to use a special method
1987 /// cache (unless it's a dynamic type or an interface) and the returned
1988 /// MemberInfo's will have the correct ReflectedType for inherited methods.
1989 /// The lookup process will automatically restart itself in method-only
1990 /// search mode if it discovers that it's about to return methods.
1992 ArrayList global = new ArrayList ();
1993 bool using_global = false;
1995 static MemberInfo [] emptyMemberInfo = new MemberInfo [0];
1997 public MemberInfo [] FindMembers (MemberTypes mt, BindingFlags bf, string name,
1998 MemberFilter filter, object criteria)
2001 throw new Exception ();
2003 bool declared_only = (bf & BindingFlags.DeclaredOnly) != 0;
2004 bool method_search = mt == MemberTypes.Method;
2005 // If we have a method cache and we aren't already doing a method-only search,
2006 // then we restart a method search if the first match is a method.
2007 bool do_method_search = !method_search && (method_hash != null);
2009 ArrayList applicable;
2011 // If this is a method-only search, we try to use the method cache if
2012 // possible; a lookup in the method cache will return a MemberInfo with
2013 // the correct ReflectedType for inherited methods.
2015 if (method_search && (method_hash != null))
2016 applicable = (ArrayList) method_hash [name];
2018 applicable = (ArrayList) member_hash [name];
2020 if (applicable == null)
2021 return emptyMemberInfo;
2024 // 32 slots gives 53 rss/54 size
2025 // 2/4 slots gives 55 rss
2027 // Strange: from 25,000 calls, only 1,800
2028 // are above 2. Why does this impact it?
2031 using_global = true;
2033 Timer.StartTimer (TimerType.CachedLookup);
2035 EntryType type = GetEntryType (mt, bf);
2037 IMemberContainer current = Container;
2040 // `applicable' is a list of all members with the given member name `name'
2041 // in the current class and all its base classes. The list is sorted in
2042 // reverse order due to the way how the cache is initialy created (to speed
2043 // things up, we're doing a deep-copy of our base).
2045 for (int i = applicable.Count-1; i >= 0; i--) {
2046 CacheEntry entry = (CacheEntry) applicable [i];
2048 // This happens each time we're walking one level up in the class
2049 // hierarchy. If we're doing a DeclaredOnly search, we must abort
2050 // the first time this happens (this may already happen in the first
2051 // iteration of this loop if there are no members with the name we're
2052 // looking for in the current class).
2053 if (entry.Container != current) {
2054 if (declared_only || DoneSearching (global))
2057 current = entry.Container;
2060 // Is the member of the correct type ?
2061 if ((entry.EntryType & type & EntryType.MaskType) == 0)
2064 // Is the member static/non-static ?
2065 if ((entry.EntryType & type & EntryType.MaskStatic) == 0)
2068 // Apply the filter to it.
2069 if (filter (entry.Member, criteria)) {
2070 if ((entry.EntryType & EntryType.MaskType) != EntryType.Method)
2071 do_method_search = false;
2072 global.Add (entry.Member);
2076 Timer.StopTimer (TimerType.CachedLookup);
2078 // If we have a method cache and we aren't already doing a method-only
2079 // search, we restart in method-only search mode if the first match is
2080 // a method. This ensures that we return a MemberInfo with the correct
2081 // ReflectedType for inherited methods.
2082 if (do_method_search && (global.Count > 0)){
2083 using_global = false;
2085 return FindMembers (MemberTypes.Method, bf, name, filter, criteria);
2088 using_global = false;
2089 MemberInfo [] copy = new MemberInfo [global.Count];
2090 global.CopyTo (copy);
2094 // find the nested type @name in @this.
2095 public Type FindNestedType (string name)
2097 ArrayList applicable = (ArrayList) member_hash [name];
2098 if (applicable == null)
2101 for (int i = applicable.Count-1; i >= 0; i--) {
2102 CacheEntry entry = (CacheEntry) applicable [i];
2103 if ((entry.EntryType & EntryType.NestedType & EntryType.MaskType) != 0)
2104 return (Type) entry.Member;
2111 // This finds the method or property for us to override. invocationType is the type where
2112 // the override is going to be declared, name is the name of the method/property, and
2113 // paramTypes is the parameters, if any to the method or property
2115 // Because the MemberCache holds members from this class and all the base classes,
2116 // we can avoid tons of reflection stuff.
2118 public MemberInfo FindMemberToOverride (Type invocationType, string name, Type [] paramTypes, GenericMethod genericMethod, bool is_property)
2120 ArrayList applicable;
2121 if (method_hash != null && !is_property)
2122 applicable = (ArrayList) method_hash [name];
2124 applicable = (ArrayList) member_hash [name];
2126 if (applicable == null)
2129 // Walk the chain of methods, starting from the top.
2131 for (int i = applicable.Count - 1; i >= 0; i--) {
2132 CacheEntry entry = (CacheEntry) applicable [i];
2134 if ((entry.EntryType & (is_property ? (EntryType.Property | EntryType.Field) : EntryType.Method)) == 0)
2137 PropertyInfo pi = null;
2138 MethodInfo mi = null;
2139 FieldInfo fi = null;
2140 Type [] cmpAttrs = null;
2143 if ((entry.EntryType & EntryType.Field) != 0) {
2144 fi = (FieldInfo)entry.Member;
2146 // TODO: For this case we ignore member type
2147 //fb = TypeManager.GetField (fi);
2148 //cmpAttrs = new Type[] { fb.MemberType };
2150 pi = (PropertyInfo) entry.Member;
2151 cmpAttrs = TypeManager.GetArgumentTypes (pi);
2154 mi = (MethodInfo) entry.Member;
2155 cmpAttrs = TypeManager.GetParameterData (mi).Types;
2159 // TODO: Almost duplicate !
2161 switch (fi.Attributes & FieldAttributes.FieldAccessMask) {
2162 case FieldAttributes.Private:
2164 // A private method is Ok if we are a nested subtype.
2165 // The spec actually is not very clear about this, see bug 52458.
2167 if (invocationType != entry.Container.Type &
2168 TypeManager.IsNestedChildOf (invocationType, entry.Container.Type))
2172 case FieldAttributes.FamANDAssem:
2173 case FieldAttributes.Assembly:
2175 // Check for assembly methods
2177 if (mi.DeclaringType.Assembly != CodeGen.Assembly.Builder)
2181 return entry.Member;
2185 // Check the arguments
2187 if (cmpAttrs.Length != paramTypes.Length)
2190 for (int j = cmpAttrs.Length - 1; j >= 0; j --) {
2191 if (!TypeManager.IsEqual (paramTypes [j], cmpAttrs [j]))
2196 // check generic arguments for methods
2199 Type [] cmpGenArgs = mi.GetGenericArguments ();
2200 if (genericMethod != null && cmpGenArgs.Length > 0) {
2201 if (genericMethod.TypeParameters.Length != cmpGenArgs.Length)
2204 else if (! (genericMethod == null && cmpGenArgs.Length == 0))
2209 // get one of the methods because this has the visibility info.
2212 mi = pi.GetGetMethod (true);
2214 mi = pi.GetSetMethod (true);
2220 switch (mi.Attributes & MethodAttributes.MemberAccessMask) {
2221 case MethodAttributes.Private:
2223 // A private method is Ok if we are a nested subtype.
2224 // The spec actually is not very clear about this, see bug 52458.
2226 if (invocationType.Equals (entry.Container.Type) ||
2227 TypeManager.IsNestedChildOf (invocationType, entry.Container.Type))
2228 return entry.Member;
2231 case MethodAttributes.FamANDAssem:
2232 case MethodAttributes.Assembly:
2234 // Check for assembly methods
2236 if (mi.DeclaringType.Assembly == CodeGen.Assembly.Builder)
2237 return entry.Member;
2242 // A protected method is ok, because we are overriding.
2243 // public is always ok.
2245 return entry.Member;
2255 /// The method is looking for conflict with inherited symbols (errors CS0108, CS0109).
2256 /// We handle two cases. The first is for types without parameters (events, field, properties).
2257 /// The second are methods, indexers and this is why ignore_complex_types is here.
2258 /// The latest param is temporary hack. See DoDefineMembers method for more info.
2260 public MemberInfo FindMemberWithSameName (string name, bool ignore_complex_types, MemberInfo ignore_member)
2262 ArrayList applicable = null;
2264 if (method_hash != null)
2265 applicable = (ArrayList) method_hash [name];
2267 if (applicable != null) {
2268 for (int i = applicable.Count - 1; i >= 0; i--) {
2269 CacheEntry entry = (CacheEntry) applicable [i];
2270 if ((entry.EntryType & EntryType.Public) != 0)
2271 return entry.Member;
2275 if (member_hash == null)
2277 applicable = (ArrayList) member_hash [name];
2279 if (applicable != null) {
2280 for (int i = applicable.Count - 1; i >= 0; i--) {
2281 CacheEntry entry = (CacheEntry) applicable [i];
2282 if ((entry.EntryType & EntryType.Public) != 0 & entry.Member != ignore_member) {
2283 if (ignore_complex_types) {
2284 if ((entry.EntryType & EntryType.Method) != 0)
2287 // Does exist easier way how to detect indexer ?
2288 if ((entry.EntryType & EntryType.Property) != 0) {
2289 Type[] arg_types = TypeManager.GetArgumentTypes ((PropertyInfo)entry.Member);
2290 if (arg_types.Length > 0)
2294 return entry.Member;
2301 Hashtable locase_table;
2304 /// Builds low-case table for CLS Compliance test
2306 public Hashtable GetPublicMembers ()
2308 if (locase_table != null)
2309 return locase_table;
2311 locase_table = new Hashtable ();
2312 foreach (DictionaryEntry entry in member_hash) {
2313 ArrayList members = (ArrayList)entry.Value;
2314 for (int ii = 0; ii < members.Count; ++ii) {
2315 CacheEntry member_entry = (CacheEntry) members [ii];
2317 if ((member_entry.EntryType & EntryType.Public) == 0)
2320 // TODO: Does anyone know easier way how to detect that member is internal ?
2321 switch (member_entry.EntryType & EntryType.MaskType) {
2322 case EntryType.Constructor:
2325 case EntryType.Field:
2326 if ((((FieldInfo)member_entry.Member).Attributes & (FieldAttributes.Assembly | FieldAttributes.Public)) == FieldAttributes.Assembly)
2330 case EntryType.Method:
2331 if ((((MethodInfo)member_entry.Member).Attributes & (MethodAttributes.Assembly | MethodAttributes.Public)) == MethodAttributes.Assembly)
2335 case EntryType.Property:
2336 PropertyInfo pi = (PropertyInfo)member_entry.Member;
2337 if (pi.GetSetMethod () == null && pi.GetGetMethod () == null)
2341 case EntryType.Event:
2342 EventInfo ei = (EventInfo)member_entry.Member;
2343 MethodInfo mi = ei.GetAddMethod ();
2344 if ((mi.Attributes & (MethodAttributes.Assembly | MethodAttributes.Public)) == MethodAttributes.Assembly)
2348 string lcase = ((string)entry.Key).ToLower (System.Globalization.CultureInfo.InvariantCulture);
2349 locase_table [lcase] = member_entry.Member;
2353 return locase_table;
2356 public Hashtable Members {
2363 /// Cls compliance check whether methods or constructors parameters differing only in ref or out, or in array rank
2365 public void VerifyClsParameterConflict (ArrayList al, MethodCore method, MemberInfo this_builder)
2367 EntryType tested_type = (method is Constructor ? EntryType.Constructor : EntryType.Method) | EntryType.Public;
2369 for (int i = 0; i < al.Count; ++i) {
2370 MemberCache.CacheEntry entry = (MemberCache.CacheEntry) al [i];
2373 if (entry.Member == this_builder)
2376 if ((entry.EntryType & tested_type) != tested_type)
2379 MethodBase method_to_compare = (MethodBase)entry.Member;
2380 AttributeTester.Result result = AttributeTester.AreOverloadedMethodParamsClsCompliant (
2381 method.ParameterTypes, TypeManager.GetParameterData (method_to_compare).Types);
2383 if (result == AttributeTester.Result.Ok)
2386 IMethodData md = TypeManager.GetMethod (method_to_compare);
2388 // TODO: now we are ignoring CLSCompliance(false) on method from other assembly which is buggy.
2389 // However it is exactly what csc does.
2390 if (md != null && !md.IsClsComplianceRequired (method.Parent))
2393 Report.SymbolRelatedToPreviousError (entry.Member);
2395 case AttributeTester.Result.RefOutArrayError:
2396 Report.Error (3006, method.Location, "Overloaded method `{0}' differing only in ref or out, or in array rank, is not CLS-compliant", method.GetSignatureForError ());
2398 case AttributeTester.Result.ArrayArrayError:
2399 Report.Error (3007, method.Location, "Overloaded method `{0}' differing only by unnamed array types is not CLS-compliant", method.GetSignatureForError ());
2403 throw new NotImplementedException (result.ToString ());