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 // Dual licensed under the terms of the MIT X11 or GNU GPL
9 // Copyright 2001 Ximian, Inc (http://www.ximian.com)
10 // Copyright 2004-2008 Novell, Inc
16 using System.Collections.Generic;
17 using System.Globalization;
18 using System.Reflection.Emit;
19 using System.Reflection;
22 using XmlElement = System.Object;
27 namespace Mono.CSharp {
30 // Better name would be DottenName
32 public class MemberName {
33 public readonly string Name;
34 public TypeArguments TypeArguments;
36 public readonly MemberName Left;
37 public readonly Location Location;
39 public static readonly MemberName Null = new MemberName ("");
43 private MemberName (MemberName left, string name, bool is_double_colon,
48 this.is_double_colon = is_double_colon;
52 private MemberName (MemberName left, string name, bool is_double_colon,
53 TypeArguments args, Location loc)
54 : this (left, name, is_double_colon, loc)
56 if (args != null && args.Count > 0)
57 this.TypeArguments = args;
60 public MemberName (string name)
61 : this (name, Location.Null)
64 public MemberName (string name, Location loc)
65 : this (null, name, false, loc)
68 public MemberName (string name, TypeArguments args, Location loc)
69 : this (null, name, false, args, loc)
72 public MemberName (MemberName left, string name)
73 : this (left, name, left != null ? left.Location : Location.Null)
76 public MemberName (MemberName left, string name, Location loc)
77 : this (left, name, false, loc)
80 public MemberName (MemberName left, string name, TypeArguments args, Location loc)
81 : this (left, name, false, args, loc)
84 public MemberName (string alias, string name, TypeArguments args, Location loc)
85 : this (new MemberName (alias, loc), name, true, args, loc)
88 public MemberName (MemberName left, MemberName right)
89 : this (left, right, right.Location)
92 public MemberName (MemberName left, MemberName right, Location loc)
93 : this (null, right.Name, false, right.TypeArguments, loc)
95 if (right.is_double_colon)
96 throw new InternalErrorException ("Cannot append double_colon member name");
97 this.Left = (right.Left == null) ? left : new MemberName (left, right.Left);
101 public string GetName ()
103 return GetName (false);
108 return TypeArguments == null ? 0 : TypeArguments.Count;
112 public bool IsGeneric {
114 if (TypeArguments != null)
116 else if (Left != null)
117 return Left.IsGeneric;
123 public string GetName (bool is_generic)
125 string name = is_generic ? Basename : Name;
127 return Left.GetName (is_generic) + (is_double_colon ? "::" : ".") + name;
132 public ATypeNameExpression GetTypeExpression ()
135 if (TypeArguments != null)
136 return new SimpleName (Name, TypeArguments, Location);
138 return new SimpleName (Name, Location);
141 if (is_double_colon) {
142 if (Left.Left != null)
143 throw new InternalErrorException ("The left side of a :: should be an identifier");
144 return new QualifiedAliasMember (Left.Name, Name, TypeArguments, Location);
147 Expression lexpr = Left.GetTypeExpression ();
148 return new MemberAccess (lexpr, Name, TypeArguments, Location);
151 public MemberName Clone ()
153 MemberName left_clone = Left == null ? null : Left.Clone ();
154 return new MemberName (left_clone, Name, is_double_colon, TypeArguments, Location);
157 public string Basename {
159 if (TypeArguments != null)
160 return MakeName (Name, TypeArguments);
165 public string GetSignatureForError ()
167 string append = TypeArguments == null ? "" : "<" + TypeArguments.GetSignatureForError () + ">";
169 return Name + append;
170 string connect = is_double_colon ? "::" : ".";
171 return Left.GetSignatureForError () + connect + Name + append;
174 public override bool Equals (object other)
176 return Equals (other as MemberName);
179 public bool Equals (MemberName other)
183 if (other == null || Name != other.Name)
185 if (is_double_colon != other.is_double_colon)
188 if ((TypeArguments != null) &&
189 (other.TypeArguments == null || TypeArguments.Count != other.TypeArguments.Count))
192 if ((TypeArguments == null) && (other.TypeArguments != null))
196 return other.Left == null;
198 return Left.Equals (other.Left);
201 public override int GetHashCode ()
203 int hash = Name.GetHashCode ();
204 for (MemberName n = Left; n != null; n = n.Left)
205 hash ^= n.Name.GetHashCode ();
209 if (TypeArguments != null)
210 hash ^= TypeArguments.Count << 5;
212 return hash & 0x7FFFFFFF;
215 public int CountTypeArguments {
217 if (TypeArguments != null)
218 return TypeArguments.Count;
219 else if (Left != null)
220 return Left.CountTypeArguments;
226 public static string MakeName (string name, TypeArguments args)
231 return name + "`" + args.Count;
234 public static string MakeName (string name, int count)
236 return name + "`" + count;
240 public class SimpleMemberName
243 public Location Location;
245 public SimpleMemberName (string name, Location loc)
253 /// Base representation for members. This is used to keep track
254 /// of Name, Location and Modifier flags, and handling Attributes.
256 [System.Diagnostics.DebuggerDisplay ("{GetSignatureForError()}")]
257 public abstract class MemberCore : Attributable, IMemberContext, IMemberDefinition
263 protected string cached_name;
264 // TODO: Remove in favor of MemberName
267 if (cached_name == null)
268 cached_name = MemberName.GetName (!(this is GenericMethod) && !(this is Method));
273 string IMemberDefinition.Name {
275 return member_name.Name;
279 // Is not readonly because of IndexerName attribute
280 private MemberName member_name;
281 public MemberName MemberName {
282 get { return member_name; }
286 /// Modifier flags that the user specified in the source code
288 private Modifiers mod_flags;
289 public Modifiers ModFlags {
292 if ((value & Modifiers.COMPILER_GENERATED) != 0)
293 caching_flags = Flags.IsUsed | Flags.IsAssigned;
300 public /*readonly*/ TypeContainer Parent;
303 /// Location where this declaration happens
305 public Location Location {
306 get { return member_name.Location; }
310 /// XML documentation comment
312 protected string comment;
315 /// Represents header string for documentation comment
316 /// for each member types.
318 public abstract string DocCommentHeader { get; }
322 Obsolete_Undetected = 1, // Obsolete attribute has not been detected yet
323 Obsolete = 1 << 1, // Type has obsolete attribute
324 ClsCompliance_Undetected = 1 << 2, // CLS Compliance has not been detected yet
325 ClsCompliant = 1 << 3, // Type is CLS Compliant
326 CloseTypeCreated = 1 << 4, // Tracks whether we have Closed the type
327 HasCompliantAttribute_Undetected = 1 << 5, // Presence of CLSCompliantAttribute has not been detected
328 HasClsCompliantAttribute = 1 << 6, // Type has CLSCompliantAttribute
329 ClsCompliantAttributeFalse = 1 << 7, // Member has CLSCompliant(false)
330 Excluded_Undetected = 1 << 8, // Conditional attribute has not been detected yet
331 Excluded = 1 << 9, // Method is conditional
332 MethodOverloadsExist = 1 << 10, // Test for duplication must be performed
334 IsAssigned = 1 << 12, // Field is assigned
335 HasExplicitLayout = 1 << 13,
336 PartialDefinitionExists = 1 << 14, // Set when corresponding partial method definition exists
337 HasStructLayout = 1 << 15 // Has StructLayoutAttribute
341 /// MemberCore flags at first detected then cached
343 internal Flags caching_flags;
345 public MemberCore (DeclSpace parent, MemberName name, Attributes attrs)
347 this.Parent = parent as TypeContainer;
349 caching_flags = Flags.Obsolete_Undetected | Flags.ClsCompliance_Undetected | Flags.HasCompliantAttribute_Undetected | Flags.Excluded_Undetected;
350 AddAttributes (attrs, this);
353 public virtual Assembly Assembly {
354 get { return Parent.Module.Assembly; }
357 protected virtual void SetMemberName (MemberName new_name)
359 member_name = new_name;
363 protected bool CheckAbstractAndExtern (bool has_block)
365 if (Parent.PartialContainer.Kind == MemberKind.Interface)
369 if ((ModFlags & Modifiers.EXTERN) != 0) {
370 Report.Error (179, Location, "`{0}' cannot declare a body because it is marked extern",
371 GetSignatureForError ());
375 if ((ModFlags & Modifiers.ABSTRACT) != 0) {
376 Report.Error (500, Location, "`{0}' cannot declare a body because it is marked abstract",
377 GetSignatureForError ());
381 if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN | Modifiers.PARTIAL)) == 0 && !(Parent is Delegate)) {
382 if (RootContext.Version >= LanguageVersion.V_3) {
383 Property.PropertyMethod pm = this as Property.PropertyMethod;
384 if (pm is Indexer.GetIndexerMethod || pm is Indexer.SetIndexerMethod)
387 if (pm != null && pm.Property.AccessorSecond == null) {
388 Report.Error (840, Location,
389 "`{0}' must have a body because it is not marked abstract or extern. The property can be automatically implemented when you define both accessors",
390 GetSignatureForError ());
395 Report.Error (501, Location, "`{0}' must have a body because it is not marked abstract, extern, or partial",
396 GetSignatureForError ());
404 protected void CheckProtectedModifier ()
406 if ((ModFlags & Modifiers.PROTECTED) == 0)
409 if (Parent.PartialContainer.Kind == MemberKind.Struct) {
410 Report.Error (666, Location, "`{0}': Structs cannot contain protected members",
411 GetSignatureForError ());
415 if ((Parent.ModFlags & Modifiers.STATIC) != 0) {
416 Report.Error (1057, Location, "`{0}': Static classes cannot contain protected members",
417 GetSignatureForError ());
421 if ((Parent.ModFlags & Modifiers.SEALED) != 0 && (ModFlags & Modifiers.OVERRIDE) == 0 &&
422 !(this is Destructor)) {
423 Report.Warning (628, 4, Location, "`{0}': new protected member declared in sealed class",
424 GetSignatureForError ());
429 public abstract bool Define ();
431 public virtual string DocComment {
441 // Returns full member name for error message
443 public virtual string GetSignatureForError ()
445 if (Parent == null || Parent.Parent == null)
446 return member_name.GetSignatureForError ();
448 return Parent.GetSignatureForError () + "." + member_name.GetSignatureForError ();
452 /// Base Emit method. This is also entry point for CLS-Compliant verification.
454 public virtual void Emit ()
456 if (!RootContext.VerifyClsCompliance)
459 VerifyClsCompliance ();
462 public bool IsCompilerGenerated {
464 if ((mod_flags & Modifiers.COMPILER_GENERATED) != 0)
467 return Parent == null ? false : Parent.IsCompilerGenerated;
471 public bool IsImported {
477 public virtual bool IsUsed {
478 get { return (caching_flags & Flags.IsUsed) != 0; }
481 protected Report Report {
483 return Compiler.Report;
487 public void SetIsUsed ()
489 caching_flags |= Flags.IsUsed;
492 public void SetIsAssigned ()
494 caching_flags |= Flags.IsAssigned;
498 /// Returns instance of ObsoleteAttribute for this MemberCore
500 public virtual ObsoleteAttribute GetAttributeObsolete ()
502 if ((caching_flags & (Flags.Obsolete_Undetected | Flags.Obsolete)) == 0)
505 caching_flags &= ~Flags.Obsolete_Undetected;
507 if (OptAttributes == null)
510 Attribute obsolete_attr = OptAttributes.Search (PredefinedAttributes.Get.Obsolete);
511 if (obsolete_attr == null)
514 caching_flags |= Flags.Obsolete;
516 ObsoleteAttribute obsolete = obsolete_attr.GetObsoleteAttribute ();
517 if (obsolete == null)
524 /// Checks for ObsoleteAttribute presence. It's used for testing of all non-types elements
526 public virtual void CheckObsoleteness (Location loc)
528 ObsoleteAttribute oa = GetAttributeObsolete ();
530 AttributeTester.Report_ObsoleteMessage (oa, GetSignatureForError (), loc, Report);
534 // Checks whether the type P is as accessible as this member
536 public bool IsAccessibleAs (TypeSpec p)
539 // if M is private, its accessibility is the same as this declspace.
540 // we already know that P is accessible to T before this method, so we
543 if ((mod_flags & Modifiers.PRIVATE) != 0)
546 while (TypeManager.HasElementType (p))
547 p = TypeManager.GetElementType (p);
549 if (p.IsGenericParameter)
552 for (TypeSpec p_parent; p != null; p = p_parent) {
553 p_parent = p.DeclaringType;
556 foreach (TypeSpec t in p.TypeArguments) {
557 if (!IsAccessibleAs (t))
562 var pAccess = p.Modifiers & Modifiers.AccessibilityMask;
563 if (pAccess == Modifiers.PUBLIC)
566 bool same_access_restrictions = false;
567 for (MemberCore mc = this; !same_access_restrictions && mc != null && mc.Parent != null; mc = mc.Parent) {
568 var al = mc.ModFlags & Modifiers.AccessibilityMask;
570 case Modifiers.INTERNAL:
571 if (al == Modifiers.PRIVATE || al == Modifiers.INTERNAL)
572 same_access_restrictions = TypeManager.IsThisOrFriendAssembly (Parent.Module.Assembly, p.Assembly);
576 case Modifiers.PROTECTED:
577 if (al == Modifiers.PROTECTED) {
578 same_access_restrictions = mc.Parent.IsBaseTypeDefinition (p_parent);
582 if (al == Modifiers.PRIVATE) {
584 // When type is private and any of its parents derives from
585 // protected type then the type is accessible
587 while (mc.Parent != null) {
588 if (mc.Parent.IsBaseTypeDefinition (p_parent))
589 same_access_restrictions = true;
596 case Modifiers.PROTECTED | Modifiers.INTERNAL:
597 if (al == Modifiers.INTERNAL)
598 same_access_restrictions = TypeManager.IsThisOrFriendAssembly (Parent.Module.Assembly, p.Assembly);
599 else if (al == Modifiers.PROTECTED)
600 same_access_restrictions = mc.Parent.IsBaseTypeDefinition (p_parent);
601 else if (al == (Modifiers.PROTECTED | Modifiers.INTERNAL))
602 same_access_restrictions = mc.Parent.IsBaseTypeDefinition (p_parent) &&
603 TypeManager.IsThisOrFriendAssembly (Parent.Module.Assembly, p.Assembly);
606 case Modifiers.PRIVATE:
608 // Both are private and share same parent
610 if (al == Modifiers.PRIVATE) {
611 var decl = mc.Parent;
613 same_access_restrictions = decl.CurrentType == p_parent;
614 } while (!same_access_restrictions && !decl.IsTopLevel && (decl = decl.Parent) != null);
620 throw new InternalErrorException (al.ToString ());
624 if (!same_access_restrictions)
632 /// Analyze whether CLS-Compliant verification must be execute for this MemberCore.
634 public override bool IsClsComplianceRequired ()
636 if ((caching_flags & Flags.ClsCompliance_Undetected) == 0)
637 return (caching_flags & Flags.ClsCompliant) != 0;
639 caching_flags &= ~Flags.ClsCompliance_Undetected;
641 if (HasClsCompliantAttribute) {
642 if ((caching_flags & Flags.ClsCompliantAttributeFalse) != 0)
645 caching_flags |= Flags.ClsCompliant;
649 if (Parent.PartialContainer.IsClsComplianceRequired ()) {
650 caching_flags |= Flags.ClsCompliant;
657 public virtual string[] ConditionalConditions ()
663 /// Returns true when MemberCore is exposed from assembly.
665 public bool IsExposedFromAssembly ()
667 if ((ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) == 0)
670 DeclSpace parentContainer = Parent.PartialContainer;
671 while (parentContainer != null && parentContainer.ModFlags != 0) {
672 if ((parentContainer.ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) == 0)
674 parentContainer = parentContainer.Parent;
679 public virtual ExtensionMethodGroupExpr LookupExtensionMethod (TypeSpec extensionType, string name, int arity, Location loc)
681 return Parent.LookupExtensionMethod (extensionType, name, arity, loc);
684 public virtual FullNamedExpression LookupNamespaceAlias (string name)
686 return Parent.NamespaceEntry.LookupNamespaceAlias (name);
689 public virtual FullNamedExpression LookupNamespaceOrType (string name, int arity, Location loc, bool ignore_cs0104)
691 return Parent.LookupNamespaceOrType (name, arity, loc, ignore_cs0104);
695 /// Goes through class hierarchy and gets value of first found CLSCompliantAttribute.
696 /// If no is attribute exists then assembly CLSCompliantAttribute is returned.
698 public bool IsNotCLSCompliant ()
700 if ((caching_flags & Flags.HasCompliantAttribute_Undetected) == 0)
701 return (caching_flags & Flags.ClsCompliantAttributeFalse) != 0;
703 caching_flags &= ~Flags.HasCompliantAttribute_Undetected;
705 if (OptAttributes != null) {
706 Attribute cls_attribute = OptAttributes.Search (PredefinedAttributes.Get.CLSCompliant);
707 if (cls_attribute != null) {
708 caching_flags |= Flags.HasClsCompliantAttribute;
709 if (cls_attribute.GetClsCompliantAttributeValue ())
712 caching_flags |= Flags.ClsCompliantAttributeFalse;
721 /// Returns true if MemberCore is explicitly marked with CLSCompliantAttribute
723 protected bool HasClsCompliantAttribute {
725 if ((caching_flags & Flags.HasCompliantAttribute_Undetected) != 0)
726 IsNotCLSCompliant ();
728 return (caching_flags & Flags.HasClsCompliantAttribute) != 0;
733 /// Returns true when a member supports multiple overloads (methods, indexers, etc)
735 public virtual bool EnableOverloadChecks (MemberCore overload)
741 /// The main virtual method for CLS-Compliant verifications.
742 /// The method returns true if member is CLS-Compliant and false if member is not
743 /// CLS-Compliant which means that CLS-Compliant tests are not necessary. A descendants override it
744 /// and add their extra verifications.
746 protected virtual bool VerifyClsCompliance ()
748 if (HasClsCompliantAttribute) {
749 if (CodeGen.Assembly.ClsCompliantAttribute == null) {
750 Attribute a = OptAttributes.Search (PredefinedAttributes.Get.CLSCompliant);
751 if ((caching_flags & Flags.ClsCompliantAttributeFalse) != 0) {
752 Report.Warning (3021, 2, a.Location,
753 "`{0}' does not need a CLSCompliant attribute because the assembly is not marked as CLS-compliant",
754 GetSignatureForError ());
756 Report.Warning (3014, 1, a.Location,
757 "`{0}' cannot be marked as CLS-compliant because the assembly is not marked as CLS-compliant",
758 GetSignatureForError ());
763 if (!IsExposedFromAssembly ()) {
764 Attribute a = OptAttributes.Search (PredefinedAttributes.Get.CLSCompliant);
765 Report.Warning (3019, 2, a.Location, "CLS compliance checking will not be performed on `{0}' because it is not visible from outside this assembly", GetSignatureForError ());
769 if ((caching_flags & Flags.ClsCompliantAttributeFalse) != 0) {
770 if (Parent.Kind == MemberKind.Interface && Parent.IsClsComplianceRequired ()) {
771 Report.Warning (3010, 1, Location, "`{0}': CLS-compliant interfaces must have only CLS-compliant members", GetSignatureForError ());
772 } else if (Parent.Kind == MemberKind.Class && (ModFlags & Modifiers.ABSTRACT) != 0 && Parent.IsClsComplianceRequired ()) {
773 Report.Warning (3011, 1, Location, "`{0}': only CLS-compliant members can be abstract", GetSignatureForError ());
779 if (Parent.Parent != null && !Parent.IsClsComplianceRequired ()) {
780 Attribute a = OptAttributes.Search (PredefinedAttributes.Get.CLSCompliant);
781 Report.Warning (3018, 1, a.Location, "`{0}' cannot be marked as CLS-compliant because it is a member of non CLS-compliant type `{1}'",
782 GetSignatureForError (), Parent.GetSignatureForError ());
786 if (!IsExposedFromAssembly ())
789 if (!Parent.PartialContainer.IsClsComplianceRequired ())
793 if (member_name.Name [0] == '_') {
794 Report.Warning (3008, 1, Location, "Identifier `{0}' is not CLS-compliant", GetSignatureForError () );
801 // Raised (and passed an XmlElement that contains the comment)
802 // when GenerateDocComment is writing documentation expectedly.
804 internal virtual void OnGenerateDocComment (XmlElement intermediateNode)
809 // Returns a string that represents the signature for this
810 // member which should be used in XML documentation.
812 public virtual string GetDocCommentName (DeclSpace ds)
814 if (ds == null || this is DeclSpace)
815 return DocCommentHeader + Name;
817 return String.Concat (DocCommentHeader, ds.Name, ".", Name);
821 // Generates xml doc comments (if any), and if required,
822 // handle warning report.
824 internal virtual void GenerateDocComment (DeclSpace ds)
827 DocUtil.GenerateDocComment (this, ds, Report);
828 } catch (Exception e) {
829 throw new InternalErrorException (this, e);
833 #region IMemberContext Members
835 public virtual CompilerContext Compiler {
836 get { return Parent.Compiler; }
839 public virtual TypeSpec CurrentType {
840 get { return Parent.CurrentType; }
843 public MemberCore CurrentMemberDefinition {
847 public virtual TypeParameter[] CurrentTypeParameters {
851 public virtual bool HasUnresolvedConstraints {
852 get { return false; }
855 public bool IsObsolete {
857 if (GetAttributeObsolete () != null)
860 return Parent == null ? false : Parent.IsObsolete;
864 public bool IsUnsafe {
866 if ((ModFlags & Modifiers.UNSAFE) != 0)
869 return Parent == null ? false : Parent.IsUnsafe;
873 public bool IsStatic {
875 return (ModFlags & Modifiers.STATIC) != 0;
883 // Base member specification. A member specification contains
884 // member details which can alter in the context (e.g. generic instances)
886 public abstract class MemberSpec
889 protected enum StateFlags
891 Obsolete_Undetected = 1, // Obsolete attribute has not been detected yet
892 Obsolete = 1 << 1, // Member has obsolete attribute
893 CLSCompliant_Undetected = 1 << 3, // CLSCompliant attribute has not been detected yet
894 CLSCompliant = 1 << 4, // Member is CLS Compliant
896 IsAccessor = 1 << 9, // Method is an accessor
897 IsGeneric = 1 << 10, // Member contains type arguments
899 PendingMetaInflate = 1 << 12,
900 PendingMakeMethod = 1 << 13,
901 PendingMemberCacheMembers = 1 << 14,
902 PendingBaseTypeInflate = 1 << 15,
903 InterfacesExpanded = 1 << 16,
904 IsNotRealProperty = 1 << 17,
907 protected Modifiers modifiers;
908 protected StateFlags state;
909 protected IMemberDefinition definition;
910 public readonly MemberKind Kind;
911 protected TypeSpec declaringType;
915 public int ID = counter++;
918 protected MemberSpec (MemberKind kind, TypeSpec declaringType, IMemberDefinition definition, Modifiers modifiers)
921 this.declaringType = declaringType;
922 this.definition = definition;
923 this.modifiers = modifiers;
925 state = StateFlags.Obsolete_Undetected | StateFlags.CLSCompliant_Undetected;
930 public Assembly Assembly {
932 return definition.Assembly;
936 public virtual int Arity {
942 public TypeSpec DeclaringType {
944 return declaringType;
947 declaringType = value;
951 public IMemberDefinition MemberDefinition {
957 public Modifiers Modifiers {
966 public virtual string Name {
968 return definition.Name;
972 public bool IsAbstract {
973 get { return (modifiers & Modifiers.ABSTRACT) != 0; }
976 public bool IsAccessor {
978 return (state & StateFlags.IsAccessor) != 0;
981 state = value ? state | StateFlags.IsAccessor : state & ~StateFlags.IsAccessor;
986 // Return true when this member is a generic in C# terms
987 // A nested non-generic type of generic type will return false
989 public bool IsGeneric {
991 return (state & StateFlags.IsGeneric) != 0;
994 state = value ? state | StateFlags.IsGeneric : state & ~StateFlags.IsGeneric;
998 public bool IsPrivate {
999 get { return (modifiers & Modifiers.PRIVATE) != 0; }
1002 public bool IsPublic {
1003 get { return (modifiers & Modifiers.PUBLIC) != 0; }
1006 public bool IsStatic {
1008 return (modifiers & Modifiers.STATIC) != 0;
1014 public virtual ObsoleteAttribute GetAttributeObsolete ()
1016 if ((state & (StateFlags.Obsolete | StateFlags.Obsolete_Undetected)) == 0)
1019 state &= ~StateFlags.Obsolete_Undetected;
1021 var oa = definition.GetAttributeObsolete ();
1023 state |= StateFlags.Obsolete;
1028 protected virtual bool IsNotCLSCompliant ()
1030 return MemberDefinition.IsNotCLSCompliant ();
1033 public virtual string GetSignatureForError ()
1035 var bf = MemberDefinition as Property.BackingField;
1036 var name = bf == null ? Name : bf.OriginalName;
1037 return DeclaringType.GetSignatureForError () + "." + name;
1040 public virtual MemberSpec InflateMember (TypeParameterInflator inflator)
1042 var inflated = (MemberSpec) MemberwiseClone ();
1043 inflated.declaringType = inflator.TypeInstance;
1044 inflated.state |= StateFlags.PendingMetaInflate;
1046 if (inflated.ID > 0)
1047 inflated.ID = -inflated.ID;
1053 // Returns member CLS compliance based on full member hierarchy
1055 public bool IsCLSCompliant ()
1057 if ((state & StateFlags.CLSCompliant_Undetected) != 0) {
1058 state &= ~StateFlags.CLSCompliant_Undetected;
1060 if (IsNotCLSCompliant ())
1064 if (DeclaringType != null) {
1065 compliant = DeclaringType.IsCLSCompliant ();
1067 // TODO: NEED AssemblySpec
1068 if (MemberDefinition.IsImported) {
1069 var attr = MemberDefinition.Assembly.GetCustomAttributes (typeof (CLSCompliantAttribute), false);
1070 compliant = attr.Length > 0 && ((CLSCompliantAttribute) attr[0]).IsCompliant;
1072 compliant = CodeGen.Assembly.IsClsCompliant;
1077 state |= StateFlags.CLSCompliant;
1080 return (state & StateFlags.CLSCompliant) != 0;
1083 public bool IsConditionallyExcluded (Location loc)
1085 if ((Kind & (MemberKind.Class | MemberKind.Method)) == 0)
1088 var conditions = MemberDefinition.ConditionalConditions ();
1089 if (conditions == null)
1092 foreach (var condition in conditions) {
1093 if (loc.CompilationUnit.IsConditionalDefined (condition))
1100 public override string ToString ()
1102 return GetSignatureForError ();
1107 // Member details which are same between all member
1110 public interface IMemberDefinition
1112 Assembly Assembly { get; }
1113 string Name { get; }
1114 bool IsImported { get; }
1116 string[] ConditionalConditions ();
1117 ObsoleteAttribute GetAttributeObsolete ();
1118 bool IsNotCLSCompliant ();
1119 void SetIsAssigned ();
1123 public interface IParametersMember : IInterfaceMemberSpec
1125 AParametersCollection Parameters { get; }
1128 public interface IInterfaceMemberSpec
1130 TypeSpec MemberType { get; }
1134 // Base type container declaration. It exists to handle partial types
1135 // which share same definition (PartialContainer) but have different
1138 public abstract class DeclSpace : MemberCore {
1140 /// This points to the actual definition that is being
1141 /// created with System.Reflection.Emit
1143 public TypeBuilder TypeBuilder;
1146 // This is the namespace in which this typecontainer
1147 // was declared. We use this to resolve names.
1149 public NamespaceEntry NamespaceEntry;
1151 private Dictionary<string, FullNamedExpression> Cache = new Dictionary<string, FullNamedExpression> ();
1153 public readonly string Basename;
1155 protected Dictionary<string, MemberCore> defined_names;
1157 public TypeContainer PartialContainer;
1159 protected readonly bool is_generic;
1160 readonly int count_type_params;
1161 protected TypeParameter[] type_params;
1162 TypeParameter[] type_param_list;
1165 // Whether we are Generic
1167 public bool IsGeneric {
1171 else if (Parent != null)
1172 return Parent.IsGeneric;
1178 static string[] attribute_targets = new string [] { "type" };
1180 public DeclSpace (NamespaceEntry ns, DeclSpace parent, MemberName name,
1182 : base (parent, name, attrs)
1184 NamespaceEntry = ns;
1185 Basename = name.Basename;
1186 defined_names = new Dictionary<string, MemberCore> ();
1187 PartialContainer = null;
1188 if (name.TypeArguments != null) {
1190 count_type_params = name.TypeArguments.Count;
1193 count_type_params += parent.count_type_params;
1197 /// Adds the member to defined_names table. It tests for duplications and enclosing name conflicts
1199 protected virtual bool AddToContainer (MemberCore symbol, string name)
1202 if (!defined_names.TryGetValue (name, out mc)) {
1203 defined_names.Add (name, symbol);
1207 if (((mc.ModFlags | symbol.ModFlags) & Modifiers.COMPILER_GENERATED) != 0)
1210 if (symbol.EnableOverloadChecks (mc))
1213 InterfaceMemberBase im = mc as InterfaceMemberBase;
1214 if (im != null && im.IsExplicitImpl)
1217 Report.SymbolRelatedToPreviousError (mc);
1218 if ((mc.ModFlags & Modifiers.PARTIAL) != 0 && (symbol is ClassOrStruct || symbol is Interface)) {
1219 Error_MissingPartialModifier (symbol);
1223 if (this is ModuleContainer) {
1224 Report.Error (101, symbol.Location,
1225 "The namespace `{0}' already contains a definition for `{1}'",
1226 ((DeclSpace)symbol).NamespaceEntry.GetSignatureForError (), symbol.MemberName.Name);
1227 } else if (symbol is TypeParameter) {
1228 Report.Error (692, symbol.Location,
1229 "Duplicate type parameter `{0}'", symbol.GetSignatureForError ());
1231 Report.Error (102, symbol.Location,
1232 "The type `{0}' already contains a definition for `{1}'",
1233 GetSignatureForError (), symbol.MemberName.Name);
1239 protected void RemoveFromContainer (string name)
1241 defined_names.Remove (name);
1245 /// Returns the MemberCore associated with a given name in the declaration
1246 /// space. It doesn't return method based symbols !!
1249 public MemberCore GetDefinition (string name)
1251 MemberCore mc = null;
1252 defined_names.TryGetValue (name, out mc);
1257 // root_types contains all the types. All TopLevel types
1258 // hence have a parent that points to `root_types', that is
1259 // why there is a non-obvious test down here.
1261 public bool IsTopLevel {
1262 get { return (Parent != null && Parent.Parent == null); }
1265 public virtual bool IsUnmanagedType ()
1270 protected virtual TypeAttributes TypeAttr {
1271 get { return Module.DefaultCharSetType; }
1275 /// Should be overriten by the appropriate declaration space
1277 public abstract TypeBuilder DefineType ();
1279 protected void Error_MissingPartialModifier (MemberCore type)
1281 Report.Error (260, type.Location,
1282 "Missing partial modifier on declaration of type `{0}'. Another partial declaration of this type exists",
1283 type.GetSignatureForError ());
1286 public override string GetSignatureForError ()
1288 return MemberName.GetSignatureForError ();
1291 public bool CheckAccessLevel (TypeSpec check_type)
1293 TypeSpec tb = PartialContainer.Definition;
1294 check_type = check_type.GetDefinition ();
1296 var check_attr = check_type.Modifiers & Modifiers.AccessibilityMask;
1298 switch (check_attr){
1299 case Modifiers.PUBLIC:
1302 case Modifiers.INTERNAL:
1303 return TypeManager.IsThisOrFriendAssembly (Assembly, check_type.Assembly);
1305 case Modifiers.PRIVATE:
1306 TypeSpec declaring = check_type.DeclaringType;
1307 return tb == declaring.GetDefinition () || TypeManager.IsNestedChildOf (tb, declaring);
1309 case Modifiers.PROTECTED:
1311 // Only accessible to methods in current type or any subtypes
1313 return TypeManager.IsNestedFamilyAccessible (tb, check_type.DeclaringType);
1315 case Modifiers.PROTECTED | Modifiers.INTERNAL:
1316 if (TypeManager.IsThisOrFriendAssembly (Assembly, check_type.Assembly))
1319 goto case Modifiers.PROTECTED;
1322 throw new NotImplementedException (check_attr.ToString ());
1325 private TypeSpec LookupNestedTypeInHierarchy (string name, int arity)
1327 // TODO: GenericMethod only
1328 if (PartialContainer == null)
1331 // Has any nested type
1332 // Does not work, because base type can have
1333 //if (PartialContainer.Types == null)
1336 var container = PartialContainer.CurrentType;
1338 // Is not Root container
1339 if (container == null)
1342 var t = MemberCache.FindNestedType (container, name, arity);
1346 // FIXME: Breaks error reporting
1347 if (!CheckAccessLevel (t))
1354 // Public function used to locate types.
1356 // Set 'ignore_cs0104' to true if you want to ignore cs0104 errors.
1358 // Returns: Type or null if they type can not be found.
1360 public override FullNamedExpression LookupNamespaceOrType (string name, int arity, Location loc, bool ignore_cs0104)
1362 FullNamedExpression e;
1363 if (arity == 0 && Cache.TryGetValue (name, out e))
1367 int errors = Report.Errors;
1370 TypeParameter[] tp = CurrentTypeParameters;
1372 TypeParameter tparam = TypeParameter.FindTypeParameter (tp, name);
1374 e = new TypeParameterExpr (tparam, Location.Null);
1379 TypeSpec t = LookupNestedTypeInHierarchy (name, arity);
1382 e = new TypeExpression (t, Location.Null);
1383 else if (Parent != null)
1384 e = Parent.LookupNamespaceOrType (name, arity, loc, ignore_cs0104);
1386 e = NamespaceEntry.LookupNamespaceOrType (name, arity, loc, ignore_cs0104);
1389 // TODO MemberCache: How to cache arity stuff ?
1390 if (errors == Report.Errors && arity == 0)
1396 public override Assembly Assembly {
1397 get { return Module.Assembly; }
1400 public virtual ModuleContainer Module {
1401 get { return Parent.Module; }
1404 TypeParameter[] initialize_type_params ()
1406 if (type_param_list != null)
1407 return type_param_list;
1409 DeclSpace the_parent = Parent;
1410 if (this is GenericMethod)
1413 var list = new List<TypeParameter> ();
1414 if (the_parent != null && the_parent.IsGeneric) {
1415 // FIXME: move generics info out of DeclSpace
1416 TypeParameter[] parent_params = the_parent.TypeParameters;
1417 list.AddRange (parent_params);
1420 int count = type_params != null ? type_params.Length : 0;
1421 for (int i = 0; i < count; i++) {
1422 TypeParameter param = type_params [i];
1424 if (Parent.CurrentTypeParameters != null) {
1425 foreach (TypeParameter tp in Parent.CurrentTypeParameters) {
1426 if (tp.Name != param.Name)
1429 Report.SymbolRelatedToPreviousError (tp.Location, null);
1430 Report.Warning (693, 3, param.Location,
1431 "Type parameter `{0}' has the same name as the type parameter from outer type `{1}'",
1432 param.Name, Parent.GetSignatureForError ());
1437 type_param_list = new TypeParameter [list.Count];
1438 list.CopyTo (type_param_list, 0);
1439 return type_param_list;
1442 public virtual void SetParameterInfo (List<Constraints> constraints_list)
1445 if (constraints_list != null) {
1447 80, Location, "Constraints are not allowed " +
1448 "on non-generic declarations");
1454 TypeParameterName[] names = MemberName.TypeArguments.GetDeclarations ();
1455 type_params = new TypeParameter [names.Length];
1458 // Register all the names
1460 for (int i = 0; i < type_params.Length; i++) {
1461 TypeParameterName name = names [i];
1463 Constraints constraints = null;
1464 if (constraints_list != null) {
1465 int total = constraints_list.Count;
1466 for (int ii = 0; ii < total; ++ii) {
1467 Constraints constraints_at = (Constraints)constraints_list[ii];
1468 // TODO: it is used by iterators only
1469 if (constraints_at == null) {
1470 constraints_list.RemoveAt (ii);
1474 if (constraints_at.TypeParameter.Value == name.Name) {
1475 constraints = constraints_at;
1476 constraints_list.RemoveAt(ii);
1482 Variance variance = name.Variance;
1483 if (name.Variance != Variance.None && !(this is Delegate || this is Interface)) {
1484 Report.Error (1960, name.Location, "Variant type parameters can only be used with interfaces and delegates");
1485 variance = Variance.None;
1488 type_params [i] = new TypeParameter (
1489 Parent, i, new MemberName (name.Name, Location), constraints, name.OptAttributes, variance);
1491 AddToContainer (type_params [i], name.Name);
1494 if (constraints_list != null && constraints_list.Count > 0) {
1495 foreach (Constraints constraint in constraints_list) {
1496 Report.Error(699, constraint.Location, "`{0}': A constraint references nonexistent type parameter `{1}'",
1497 GetSignatureForError (), constraint.TypeParameter.Value);
1502 protected TypeParameter[] TypeParameters {
1505 throw new InvalidOperationException ();
1506 if ((PartialContainer != null) && (PartialContainer != this))
1507 return PartialContainer.TypeParameters;
1508 if (type_param_list == null)
1509 initialize_type_params ();
1511 return type_param_list;
1515 public int CountTypeParameters {
1517 return count_type_params;
1521 public override string[] ValidAttributeTargets {
1522 get { return attribute_targets; }
1525 protected override bool VerifyClsCompliance ()
1527 if (!base.VerifyClsCompliance ()) {
1531 if (type_params != null) {
1532 foreach (TypeParameter tp in type_params) {
1533 tp.VerifyClsCompliance ();