2 // membercache.cs: A container for all member lookups
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Marek Safar (marek.safar@gmail.com)
7 // Dual licensed under the terms of the MIT X11 or GNU GPL
9 // Copyright 2001 Ximian, Inc (http://www.ximian.com)
10 // Copyright 2004-2010 Novell, Inc
16 using System.Collections.Generic;
17 using System.Globalization;
18 using System.Reflection.Emit;
19 using System.Reflection;
22 namespace Mono.CSharp {
25 public enum MemberKind
41 TypeParameter = 1 << 16,
43 PointerType = 1 << 20,
44 InternalCompilerType = 1 << 21,
47 NestedMask = Class | Struct | Delegate | Enum | Interface,
48 GenericMask = Method | Class | Struct | Delegate | Interface,
49 MaskType = Constructor | Event | Field | Method | Property | Indexer | Operator | Destructor | NestedMask,
54 public enum BindingRestriction
58 // Member has to be accessible
61 // Inspect only queried type members
62 DeclaredOnly = 1 << 1,
65 InstanceOnly = 1 << 2,
67 // Ignore member overrides
71 public struct MemberFilter : IEquatable<MemberSpec>
73 public readonly string Name;
74 public readonly MemberKind Kind;
75 public readonly AParametersCollection Parameters;
76 public readonly TypeSpec MemberType;
78 int arity; // -1 to ignore the check
79 TypeSpec invocation_type;
81 private MemberFilter (string name, MemberKind kind)
88 invocation_type = null;
91 public MemberFilter (MethodSpec m)
94 Kind = MemberKind.Method;
95 Parameters = m.Parameters;
96 MemberType = m.ReturnType;
98 invocation_type = null;
101 public MemberFilter (string name, int arity, MemberKind kind, AParametersCollection param, TypeSpec type)
108 invocation_type = null;
111 public TypeSpec InvocationType {
113 return invocation_type;
116 invocation_type = value;
120 public static MemberFilter Constructor (AParametersCollection param)
122 return new MemberFilter (System.Reflection.ConstructorInfo.ConstructorName, 0, MemberKind.Constructor, param, null);
125 public static MemberFilter Property (string name, TypeSpec type)
127 return new MemberFilter (name, 0, MemberKind.Property, null, type);
130 public static MemberFilter Field (string name, TypeSpec type)
132 return new MemberFilter (name, 0, MemberKind.Field, null, type);
135 public static MemberFilter Method (string name, int arity, AParametersCollection param, TypeSpec type)
137 return new MemberFilter (name, arity, MemberKind.Method, param, type);
140 #region IEquatable<MemberSpec> Members
142 public bool Equals (MemberSpec other)
144 // Is the member of the correct type ?
145 // TODO: Isn't this redundant ?
146 if ((other.Kind & Kind & MemberKind.MaskType) == 0)
149 // Check arity when not disabled
150 if (arity >= 0 && arity != other.Arity)
153 if (Parameters != null) {
154 if (other is IParametersMember) {
155 var other_param = ((IParametersMember) other).Parameters;
156 if (!TypeSpecComparer.Override.IsEqual (Parameters, other_param))
163 if (MemberType != null) {
164 if (other is IInterfaceMemberSpec) {
165 var other_type = ((IInterfaceMemberSpec) other).MemberType;
166 if (!TypeSpecComparer.Override.IsEqual (other_type, MemberType))
173 if (invocation_type != null && !IsAccessible (other))
179 bool IsAccessible (MemberSpec other)
182 return Expression.IsMemberAccessible (invocation_type, other, out extra);
189 /// The MemberCache is used by dynamic and non-dynamic types to speed up
190 /// member lookups. It has a member name based hash table; it maps each member
191 /// name to a list of CacheEntry objects. Each CacheEntry contains a MemberInfo
192 /// and the BindingFlags that were initially used to get it. The cache contains
193 /// all members of the current class and all inherited members. If this cache is
194 /// for an interface types, it also contains all inherited members.
196 /// There are two ways to get a MemberCache:
197 /// * if this is a dynamic type, lookup the corresponding DeclSpace and then
198 /// use the DeclSpace.MemberCache property.
199 /// * if this not a dynamic type, call TypeHandle.GetTypeHandle() to get a
200 /// TypeHandle instance for the type and then use TypeHandle.MemberCache.
202 public class MemberCache
204 readonly Dictionary<string, IList<MemberSpec>> member_hash;
205 Dictionary<string, MemberSpec[]> locase_members;
206 IList<MethodSpec> missing_abstract;
208 public static readonly string IndexerNameAlias = "<this>";
210 public static readonly MemberCache Empty = new MemberCache (0);
212 public MemberCache ()
217 public MemberCache (int capacity)
219 member_hash = new Dictionary<string, IList<MemberSpec>> (capacity);
222 public MemberCache (MemberCache cache)
223 : this (cache.member_hash.Count)
228 // Creates a new MemberCache for the given `container'.
230 public MemberCache (TypeContainer container)
231 : this () // TODO: Optimize the size
236 // Member-cache does not contain base members but it does
237 // contain all base interface members, so the Lookup code
238 // can use simple inheritance rules.
240 public void AddInterface (TypeSpec iface)
242 var cache = iface.MemberCache;
244 IList<MemberSpec> list;
245 foreach (var entry in cache.member_hash) {
246 if (!member_hash.TryGetValue (entry.Key, out list)) {
247 if (entry.Value.Count == 1) {
250 list = new List<MemberSpec> (entry.Value);
253 member_hash.Add (entry.Key, list);
257 foreach (var ce in entry.Value) {
258 if (ce.DeclaringType != iface)
261 if (list.Contains (ce))
264 if (AddInterfaceMember (ce, ref list))
265 member_hash[entry.Key] = list;
270 public void AddMember (InterfaceMemberBase imb, string exlicitName, MemberSpec ms)
272 // Explicit names cannot be looked-up but can be used for
273 // collision checking (no name mangling needed)
274 if (imb.IsExplicitImpl)
275 AddMember (exlicitName, ms);
281 // Add non-explicit member to member cache
283 public void AddMember (MemberSpec ms)
285 AddMember (GetLookupName (ms), ms);
288 void AddMember (string name, MemberSpec member)
290 IList<MemberSpec> list;
291 if (!member_hash.TryGetValue (name, out list)) {
292 member_hash.Add (name, new MemberSpec[] { member });
296 if (member.DeclaringType.IsInterface) {
297 if (AddInterfaceMember (member, ref list))
298 member_hash[name] = list;
300 if (list is MemberSpec[]) {
301 list = new List<MemberSpec> () { list[0] };
302 member_hash[name] = list;
310 // Ignores any base interface member which can be hidden
313 static bool AddInterfaceMember (MemberSpec member, ref IList<MemberSpec> existing)
315 var member_param = member is IParametersMember ? ((IParametersMember) member).Parameters : ParametersCompiled.EmptyReadOnlyParameters;
318 // interface IA : IB { int Prop { set; } }
319 // interface IB { bool Prop { get; } }
321 // IB.Prop is never accessible from IA interface
323 for (int i = 0; i < existing.Count; ++i) {
324 var entry = existing[i];
326 if (entry.Arity != member.Arity)
329 if (entry is IParametersMember) {
330 var entry_param = ((IParametersMember) entry).Parameters;
331 if (!TypeSpecComparer.Override.IsEqual (entry_param, member_param))
335 if (member.DeclaringType.ImplementsInterface (entry.DeclaringType)) {
336 if (existing is MemberSpec[]) {
337 existing = new MemberSpec[] { member };
341 existing.RemoveAt (i--);
345 if (entry.DeclaringType == member.DeclaringType || entry.DeclaringType.ImplementsInterface (member.DeclaringType))
349 if (existing is MemberSpec[]) {
350 existing = new List<MemberSpec> () { existing[0], member };
354 existing.Add (member);
358 public static IEnumerable<IndexerSpec> FindIndexers (TypeSpec container, BindingRestriction restrictions)
360 var filter = new MemberFilter (IndexerNameAlias, 0, MemberKind.Indexer, null, null);
361 var found = FindMembers (container, filter, restrictions);
362 return found == null ? null : found.Cast<IndexerSpec> ();
365 public static MemberSpec FindMember (TypeSpec container, MemberFilter filter, BindingRestriction restrictions)
368 IList<MemberSpec> applicable;
369 if (container.MemberCache.member_hash.TryGetValue (filter.Name, out applicable)) {
370 // Start from the end because interface members are in reverse order
371 for (int i = applicable.Count - 1; i >= 0; i--) {
372 var entry = applicable [i];
374 if ((restrictions & BindingRestriction.InstanceOnly) != 0 && entry.IsStatic)
377 if (filter.Equals (entry))
381 //if ((restrictions & BindingRestriction.AccessibleOnly) != 0)
382 // throw new NotImplementedException ("net");
386 container = container.BaseType;
387 } while (container != null && (restrictions & BindingRestriction.DeclaredOnly) == 0);
393 // Returns the first set of members starting from container
395 public static IList<MemberSpec> FindMembers (TypeSpec container, MemberFilter filter, BindingRestriction restrictions)
397 IList<MemberSpec> applicable;
398 IList<MemberSpec> found = null;
401 if (container.MemberCache.member_hash.TryGetValue (filter.Name, out applicable)) {
402 for (int i = 0; i < applicable.Count; ++i) {
403 var entry = applicable [i];
405 // Is the member of the correct type
406 if ((entry.Kind & filter.Kind & MemberKind.MaskType) == 0)
410 // When using overloadable overrides filter ignore members which
411 // are not base members. Including properties because overrides can
412 // implement get or set only and we are looking for complete base member
414 const MemberKind overloadable = MemberKind.Indexer | MemberKind.Method | MemberKind.Property;
415 if ((restrictions & BindingRestriction.NoOverrides) != 0 && (entry.Kind & overloadable) != 0) {
416 if ((entry.Modifiers & Modifiers.OVERRIDE) != 0)
419 if ((entry.Modifiers & Modifiers.OVERRIDE_UNCHECKED) != 0) {
420 bool is_override = true;
421 var ms = entry as MethodSpec;
423 is_override = IsRealMethodOverride (ms);
425 var ps = (PropertySpec) entry;
427 is_override = IsRealMethodOverride (ps.Get);
428 if (is_override && ps.HasSet)
429 is_override = IsRealMethodOverride (ps.Set);
433 entry.Modifiers = (entry.Modifiers & ~Modifiers.OVERRIDE_UNCHECKED) | Modifiers.OVERRIDE;
439 if ((restrictions & BindingRestriction.InstanceOnly) != 0 && entry.IsStatic)
442 // Apply the filter to it.
443 if (!filter.Equals (entry))
450 found = new List<MemberSpec> ();
453 } else if (found == applicable) {
454 found = new List<MemberSpec> ();
455 found.Add (applicable[0]);
463 if (found == applicable && applicable.Count != 1)
464 return new MemberSpec[] { found[0] };
470 container = container.BaseType;
471 } while (container != null && (restrictions & BindingRestriction.DeclaredOnly) == 0);
477 // Finds the nested type in container
479 public static TypeSpec FindNestedType (TypeSpec container, string name, int arity)
481 IList<MemberSpec> applicable;
482 TypeSpec best_match = null;
484 // TODO: Don't know how to handle this yet
485 // When resolving base type of nested type, parent type must have
486 // base type resolved to scan full hierarchy correctly
487 // Similarly MemberCacheTypes will inflate BaseType and Interfaces
488 // based on type definition
489 var tc = container.MemberDefinition as TypeContainer;
493 if (container.MemberCacheTypes.member_hash.TryGetValue (name, out applicable)) {
494 for (int i = applicable.Count - 1; i >= 0; i--) {
495 var entry = applicable[i];
496 if ((entry.Kind & MemberKind.NestedMask) == 0)
499 var ts = (TypeSpec) entry;
500 if (arity == ts.Arity)
504 if (best_match == null) {
506 } else if (System.Math.Abs (ts.Arity + arity) < System.Math.Abs (ts.Arity + arity)) {
513 container = container.BaseType;
514 } while (container != null);
520 // Looks for extension methods with defined name and extension type
522 public List<MethodSpec> FindExtensionMethods (TypeSpec invocationType, TypeSpec extensionType, string name, int arity)
524 IList<MemberSpec> entries;
525 if (!member_hash.TryGetValue (name, out entries))
528 List<MethodSpec> candidates = null;
529 foreach (var entry in entries) {
530 if (entry.Kind != MemberKind.Method || (arity >= 0 && entry.Arity != arity))
533 var ms = (MethodSpec) entry;
534 if (!ms.IsExtensionMethod)
538 if (!Expression.IsMemberAccessible (invocationType, ms, out extra))
541 // TODO: CodeGen.Assembly.Builder
542 if ((ms.DeclaringType.Modifiers & Modifiers.INTERNAL) != 0 &&
543 !TypeManager.IsThisOrFriendAssembly (CodeGen.Assembly.Builder, ms.Assembly))
546 if (candidates == null)
547 candidates = new List<MethodSpec> ();
555 // Returns base members of @member member if no exact match is found @bestCandidate returns
558 public static MemberSpec FindBaseMember (MemberCore member, out MemberSpec bestCandidate)
560 bestCandidate = null;
561 var container = member.Parent.PartialContainer.Definition;
562 if (!container.IsInterface)
563 container = container.BaseType;
565 string name = GetLookupName (member);
566 IList<MemberSpec> applicable;
567 var member_param = member is IParametersMember ? ((IParametersMember) member).Parameters : null;
569 var mkind = GetMemberCoreKind (member);
572 if (container.MemberCache.member_hash.TryGetValue (name, out applicable)) {
573 for (int i = 0; i < applicable.Count; ++i) {
574 var entry = applicable [i];
576 if ((entry.Modifiers & Modifiers.PRIVATE) != 0)
579 if ((entry.Modifiers & Modifiers.AccessibilityMask) == Modifiers.INTERNAL) {
580 if (!TypeManager.IsThisOrFriendAssembly (member.Assembly, entry.Assembly))
584 // Is the member of the correct type ?
585 if ((entry.Kind & mkind & MemberKind.MaskType) == 0) {
586 if (member_param == null || !(entry is IParametersMember)) {
587 bestCandidate = entry;
594 if (member_param == null)
598 int arity = member.MemberName.Arity;
599 if (arity != entry.Arity)
602 if (entry is IParametersMember) {
603 if (entry.IsAccessor != member is AbstractPropertyEventMethod)
606 var entry_param = ((IParametersMember) entry).Parameters;
607 if (TypeSpecComparer.Override.IsEqual (entry_param, member_param))
613 if (bestCandidate == null)
614 bestCandidate = entry;
617 if (member_param == null)
621 if (container.IsInterface)
624 container = container.BaseType;
625 } while (container != null);
631 // Returns inflated version of MemberSpec, it works similarly to
632 // SRE TypeBuilder.GetMethod
634 public static T GetMember<T> (TypeSpec container, T spec) where T : MemberSpec
636 IList<MemberSpec> applicable;
637 if (container.MemberCache.member_hash.TryGetValue (GetLookupName (spec), out applicable)) {
638 for (int i = applicable.Count - 1; i >= 0; i--) {
639 var entry = applicable[i];
640 if (entry.MemberDefinition == spec.MemberDefinition)
645 throw new InternalErrorException ("Missing member `{0}' on inflated type `{1}'",
646 spec.GetSignatureForError (), container.GetSignatureForError ());
649 static MemberKind GetMemberCoreKind (MemberCore member)
651 if (member is FieldBase)
652 return MemberKind.Field;
653 if (member is Indexer)
654 return MemberKind.Indexer;
656 return MemberKind.Class;
657 if (member is Struct)
658 return MemberKind.Struct;
659 if (member is Destructor)
660 return MemberKind.Destructor;
661 if (member is Method)
662 return MemberKind.Method;
663 if (member is Property)
664 return MemberKind.Property;
665 if (member is EventField)
666 return MemberKind.Event;
667 if (member is Interface)
668 return MemberKind.Interface;
669 if (member is EventProperty)
670 return MemberKind.Event;
672 throw new NotImplementedException (member.GetType ().ToString ());
675 public static IList<MemberSpec> GetCompletitionMembers (TypeSpec container, string name)
677 var matches = new List<MemberSpec> ();
678 foreach (var entry in container.MemberCache.member_hash) {
679 foreach (var name_entry in entry.Value) {
680 if (name_entry.IsAccessor)
683 if ((name_entry.Kind & (MemberKind.Constructor | MemberKind.FakeMethod | MemberKind.Destructor)) != 0)
687 if (!Expression.IsMemberAccessible (InternalType.FakeInternalType, name_entry, out extra))
690 if (name == null || name_entry.Name.StartsWith (name)) {
691 matches.Add (name_entry);
700 // Returns members of @iface only, base members are ignored
702 public static IList<MethodSpec> GetInterfaceMembers (TypeSpec iface)
705 // MemberCache flatten interfaces, therefore in cases like this one
707 // interface IA : IB {}
708 // interface IB { void Foo () }
710 // we would return Foo inside IA which is not expected in this case
712 var methods = new List<MethodSpec> ();
713 foreach (var entry in iface.MemberCache.member_hash.Values) {
714 foreach (var name_entry in entry) {
715 if (iface == name_entry.DeclaringType) {
716 if (name_entry.Kind == MemberKind.Method) {
717 methods.Add ((MethodSpec) name_entry);
726 public static IList<MethodSpec> GetNotImplementedAbstractMethods (TypeSpec type)
728 if (type.MemberCache.missing_abstract != null)
729 return type.MemberCache.missing_abstract;
731 var abstract_methods = new List<MethodSpec> ();
732 List<TypeSpec> hierarchy = null;
735 // Stage 1: top-to-bottom scan for abstract members
737 var abstract_type = type;
739 foreach (var entry in abstract_type.MemberCache.member_hash) {
740 foreach (var name_entry in entry.Value) {
741 if ((name_entry.Modifiers & Modifiers.ABSTRACT) == 0)
744 if (name_entry.Kind != MemberKind.Method)
747 abstract_methods.Add ((MethodSpec) name_entry);
751 var base_type = abstract_type.BaseType;
752 if (!base_type.IsAbstract)
755 if (hierarchy == null)
756 hierarchy = new List<TypeSpec> ();
758 hierarchy.Add (abstract_type);
759 abstract_type = base_type;
762 int not_implemented_count = abstract_methods.Count;
763 if (not_implemented_count == 0 || hierarchy == null) {
764 type.MemberCache.missing_abstract = abstract_methods;
765 return type.MemberCache.missing_abstract;
769 // Stage 2: Remove already implemented methods
771 foreach (var type_up in hierarchy) {
772 var members = type_up.MemberCache.member_hash;
773 if (members.Count == 0)
776 for (int i = 0; i < abstract_methods.Count; ++i) {
777 var candidate = abstract_methods [i];
778 if (candidate == null)
781 IList<MemberSpec> applicable;
782 if (!members.TryGetValue (candidate.Name, out applicable))
785 var filter = new MemberFilter (candidate);
786 foreach (var item in applicable) {
787 // TODO: Need to test what should happen for OVERRIDE_UNCHECKED
788 if ((item.Modifiers & (Modifiers.OVERRIDE | Modifiers.OVERRIDE_UNCHECKED | Modifiers.VIRTUAL)) == 0)
791 if (filter.Equals (item)) {
792 --not_implemented_count;
793 abstract_methods [i] = null;
800 if (not_implemented_count == abstract_methods.Count) {
801 type.MemberCache.missing_abstract = abstract_methods;
802 return type.MemberCache.missing_abstract;
805 var not_implemented = new MethodSpec[not_implemented_count];
807 foreach (var m in abstract_methods) {
811 not_implemented[counter++] = m;
814 type.MemberCache.missing_abstract = not_implemented;
815 return type.MemberCache.missing_abstract;
818 static string GetLookupName (MemberSpec ms)
820 if (ms.Kind == MemberKind.Indexer)
821 return IndexerNameAlias;
823 if (ms.Kind == MemberKind.Constructor) {
825 return ConstructorInfo.TypeConstructorName;
827 return ConstructorInfo.ConstructorName;
833 static string GetLookupName (MemberCore mc)
836 return IndexerNameAlias;
838 if (mc is Constructor)
839 return ConstructorInfo.ConstructorName;
841 return mc.MemberName.Name;
845 // Inflates all member cache nested types
847 public void InflateTypes (MemberCache inflated_cache, TypeParameterInflator inflator)
849 foreach (var item in member_hash) {
850 IList<MemberSpec> inflated_members = null;
851 for (int i = 0; i < item.Value.Count; ++i ) {
852 var member = item.Value[i];
854 // FIXME: When inflating members refering nested types before they are inflated
858 if ((member.Kind & MemberKind.NestedMask) != 0 &&
859 (member.Modifiers & Modifiers.COMPILER_GENERATED) == 0) {
860 if (inflated_members == null) {
861 inflated_members = new MemberSpec[item.Value.Count];
862 inflated_cache.member_hash.Add (item.Key, inflated_members);
865 inflated_members [i] = member.InflateMember (inflator);
872 // Inflates all open type members, requires InflateTypes to be called before
874 public void InflateMembers (MemberCache cacheToInflate, TypeSpec inflatedType, TypeParameterInflator inflator)
876 var inflated_member_hash = cacheToInflate.member_hash;
877 Dictionary<MethodSpec, MethodSpec> accessor_relation = null;
878 List<MemberSpec> accessor_members = null;
880 foreach (var item in member_hash) {
881 var members = item.Value;
882 IList<MemberSpec> inflated_members = null;
883 for (int i = 0; i < members.Count; ++i ) {
884 var member = members[i];
887 // All nested types have been inflated earlier except for
888 // compiler types which are created later and could miss InflateTypes
890 if ((member.Kind & MemberKind.NestedMask) != 0 &&
891 (member.Modifiers & Modifiers.COMPILER_GENERATED) == 0) {
892 if (inflated_members == null)
893 inflated_members = inflated_member_hash[item.Key];
899 // Clone the container first
901 if (inflated_members == null) {
902 inflated_members = new MemberSpec [item.Value.Count];
903 inflated_member_hash.Add (item.Key, inflated_members);
906 var local_inflator = inflator;
908 if (member.DeclaringType != inflatedType) {
910 // Don't inflate non generic interface members
911 // merged into generic interface
913 if (!member.DeclaringType.IsGeneric) {
914 inflated_members [i] = member;
919 // Needed when inflating flatten interfaces. It inflates
920 // container type only, type parameters are already done
922 // Handles cases like:
925 // interface I<U, V> : I<U> {}
927 // class C: I<int, bool> {}
929 var inflated_parent = inflator.Inflate (member.DeclaringType);
930 if (inflated_parent != inflator.TypeInstance)
931 local_inflator = new TypeParameterInflator (inflator, inflated_parent);
935 // Inflate every member, its parent is now different
937 var inflated = member.InflateMember (local_inflator);
938 inflated_members [i] = inflated;
940 if (member is PropertySpec || member is EventSpec) {
941 if (accessor_members == null)
942 accessor_members = new List<MemberSpec> ();
944 accessor_members.Add (inflated);
948 if (member.IsAccessor) {
949 if (accessor_relation == null)
950 accessor_relation = new Dictionary<MethodSpec, MethodSpec> ();
951 accessor_relation.Add ((MethodSpec) member, (MethodSpec) inflated);
956 if (accessor_members != null) {
957 foreach (var member in accessor_members) {
958 var prop = member as PropertySpec;
960 if (prop.Get != null)
961 prop.Get = accessor_relation[prop.Get];
962 if (prop.Set != null)
963 prop.Set = accessor_relation[prop.Set];
968 var ev = (EventSpec) member;
969 ev.AccessorAdd = accessor_relation[ev.AccessorAdd];
970 ev.AccessorRemove = accessor_relation[ev.AccessorRemove];
976 // For imported class method do additional validation to be sure that metadata
977 // override flag was correct
979 static bool IsRealMethodOverride (MethodSpec ms)
981 IList<MemberSpec> candidates;
982 var dt = ms.DeclaringType;
983 while (dt.BaseType != null) {
984 var base_cache = dt.BaseType.MemberCache;
985 if (base_cache.member_hash.TryGetValue (ms.Name, out candidates)) {
986 foreach (var candidate in candidates) {
987 if (candidate.Kind != ms.Kind)
990 if (candidate.Arity != ms.Arity)
993 if (!TypeSpecComparer.Override.IsEqual (((MethodSpec) candidate).Parameters, ms.Parameters))
996 // Everything matches except modifiers, it's not correct soverride
997 if ((candidate.Modifiers & Modifiers.AccessibilityMask) != (ms.Modifiers & Modifiers.AccessibilityMask))
1011 // Checks all appropriate container members for CLS compliance
1013 public void VerifyClsCompliance (TypeSpec container, Report report)
1015 if (locase_members != null)
1018 if (container.BaseType == null) {
1019 locase_members = new Dictionary<string, MemberSpec[]> (member_hash.Count); // StringComparer.OrdinalIgnoreCase);
1021 container.BaseType.MemberCache.VerifyClsCompliance (container.BaseType, report);
1022 locase_members = new Dictionary<string, MemberSpec[]> (container.BaseType.MemberCache.locase_members); //, StringComparer.OrdinalIgnoreCase);
1025 var is_imported_type = container.MemberDefinition.IsImported;
1026 foreach (var entry in container.MemberCache.member_hash) {
1027 for (int i = 0; i < entry.Value.Count; ++i ) {
1028 var name_entry = entry.Value[i];
1029 if ((name_entry.Modifiers & (Modifiers.PUBLIC | Modifiers.PROTECTED)) == 0)
1032 if ((name_entry.Modifiers & (Modifiers.OVERRIDE | Modifiers.COMPILER_GENERATED)) != 0)
1035 if ((name_entry.Kind & MemberKind.MaskType) == 0)
1038 if (name_entry.MemberDefinition.IsNotCLSCompliant ())
1041 IParametersMember p_a = name_entry as IParametersMember;
1042 if (p_a != null && !name_entry.IsAccessor) {
1043 if (!is_imported_type) {
1044 var p_a_pd = p_a.Parameters;
1045 for (int ii = i + 1; ii < entry.Value.Count; ++ii) {
1046 var checked_entry = entry.Value[ii];
1047 IParametersMember p_b = checked_entry as IParametersMember;
1051 if (p_a_pd.Count != p_b.Parameters.Count)
1054 if (checked_entry.IsAccessor)
1057 var res = ParametersCompiled.IsSameClsSignature (p_a.Parameters, p_b.Parameters);
1059 var last = GetLaterDefinedMember (checked_entry, name_entry);
1060 if (last == checked_entry.MemberDefinition) {
1061 report.SymbolRelatedToPreviousError (name_entry);
1063 report.SymbolRelatedToPreviousError (checked_entry);
1066 if ((res & 1) != 0) {
1067 report.Warning (3006, 1, last.Location,
1068 "Overloaded method `{0}' differing only in ref or out, or in array rank, is not CLS-compliant",
1069 name_entry.GetSignatureForError ());
1072 if ((res & 2) != 0) {
1073 report.Warning (3007, 1, last.Location,
1074 "Overloaded method `{0}' differing only by unnamed array types is not CLS-compliant",
1075 name_entry.GetSignatureForError ());
1082 if (i > 0 || name_entry.Kind == MemberKind.Constructor || name_entry.Kind == MemberKind.Indexer)
1085 var name_entry_locase = name_entry.Name.ToLowerInvariant ();
1088 if (!locase_members.TryGetValue (name_entry_locase, out found)) {
1089 found = new MemberSpec[] { name_entry };
1090 locase_members.Add (name_entry_locase, found);
1092 bool same_names_only = true;
1093 foreach (var f in found) {
1094 if (f.Name == name_entry.Name)
1097 // if (f.IsAccessor && name_entry.IsAccessor)
1100 same_names_only = false;
1101 if (!is_imported_type) {
1102 var last = GetLaterDefinedMember (f, name_entry);
1103 if (last == f.MemberDefinition) {
1104 report.SymbolRelatedToPreviousError (name_entry);
1106 report.SymbolRelatedToPreviousError (f);
1109 report.Warning (3005, 1, last.Location,
1110 "Identifier `{0}' differing only in case is not CLS-compliant", last.GetSignatureForError ());
1114 if (!same_names_only) {
1115 Array.Resize (ref found, found.Length + 1);
1116 found[found.Length - 1] = name_entry;
1117 locase_members[name_entry_locase] = found;
1125 // Local report helper to issue correctly ordered members stored in hashtable
1127 static MemberCore GetLaterDefinedMember (MemberSpec a, MemberSpec b)
1129 var mc_a = a.MemberDefinition as MemberCore;
1130 var mc_b = b.MemberDefinition as MemberCore;
1137 if (mc_a.Location.File != mc_a.Location.File)
1140 return mc_b.Location.Row > mc_a.Location.Row ? mc_b : mc_a;
1143 public bool CheckExistingMembersOverloads (MemberCore member, AParametersCollection parameters)
1145 var name = GetLookupName (member);
1146 var imb = member as InterfaceMemberBase;
1147 if (imb != null && imb.IsExplicitImpl) {
1148 name = imb.GetFullName (name);
1151 return CheckExistingMembersOverloads (member, name, parameters);
1154 public bool CheckExistingMembersOverloads (MemberCore member, string name, AParametersCollection parameters)
1156 IList<MemberSpec> entries;
1157 if (!member_hash.TryGetValue (name, out entries))
1160 var Report = member.Compiler.Report;
1162 int method_param_count = parameters.Count;
1163 for (int i = entries.Count - 1; i >= 0; --i) {
1164 var ce = entries[i];
1165 var pm = ce as IParametersMember;
1166 var pd = pm == null ? ParametersCompiled.EmptyReadOnlyParameters : pm.Parameters;
1167 if (pd.Count != method_param_count)
1170 if (ce.Arity != member.MemberName.Arity)
1173 // Ignore merged interface members
1174 if (member.Parent.PartialContainer != ce.DeclaringType.MemberDefinition)
1177 var p_types = pd.Types;
1178 if (method_param_count > 0) {
1179 int ii = method_param_count - 1;
1180 TypeSpec type_a, type_b;
1182 type_a = parameters.Types [ii];
1183 type_b = p_types [ii];
1185 if ((pd.FixedParameters [ii].ModFlags & Parameter.Modifier.ISBYREF) !=
1186 (parameters.FixedParameters [ii].ModFlags & Parameter.Modifier.ISBYREF))
1189 } while (TypeSpecComparer.Override.IsEqual (type_a, type_b) && ii-- != 0);
1195 // Operators can differ in return type only
1197 if (member is Operator && ce.Kind == MemberKind.Operator && ((MethodSpec) ce).ReturnType != ((Operator) member).ReturnType)
1201 // Report difference in parameter modifiers only
1203 if (pd != null && member is MethodCore) {
1204 ii = method_param_count;
1205 while (ii-- != 0 && parameters.FixedParameters[ii].ModFlags == pd.FixedParameters[ii].ModFlags &&
1206 parameters.ExtensionMethodType == pd.ExtensionMethodType) ;
1209 var mc = ce as MethodSpec;
1210 member.Compiler.Report.SymbolRelatedToPreviousError (ce);
1211 if ((member.ModFlags & Modifiers.PARTIAL) != 0 && (mc.Modifiers & Modifiers.PARTIAL) != 0) {
1212 if (parameters.HasParams || pd.HasParams) {
1213 Report.Error (758, member.Location,
1214 "A partial method declaration and partial method implementation cannot differ on use of `params' modifier");
1216 Report.Error (755, member.Location,
1217 "A partial method declaration and partial method implementation must be both an extension method or neither");
1219 } else if (member is Constructor) {
1220 Report.Error (851, member.Location,
1221 "Overloaded contructor `{0}' cannot differ on use of parameter modifiers only",
1222 member.GetSignatureForError ());
1224 Report.Error (663, member.Location,
1225 "Overloaded method `{0}' cannot differ on use of parameter modifiers only",
1226 member.GetSignatureForError ());
1233 if ((ce.Kind & (MemberKind.Method | MemberKind.FakeMethod)) != 0) {
1234 Method method_a = member as Method;
1235 Method method_b = ce.MemberDefinition as Method;
1236 if (method_a != null && method_b != null && (method_a.ModFlags & method_b.ModFlags & Modifiers.PARTIAL) != 0) {
1237 const Modifiers partial_modifiers = Modifiers.STATIC | Modifiers.UNSAFE;
1238 if (method_a.IsPartialDefinition == method_b.IsPartialImplementation) {
1239 if ((method_a.ModFlags & partial_modifiers) == (method_b.ModFlags & partial_modifiers) ||
1240 method_a.Parent.IsUnsafe && method_b.Parent.IsUnsafe) {
1241 if (method_a.IsPartialImplementation) {
1242 method_a.SetPartialDefinition (method_b);
1243 if (entries.Count == 1)
1244 member_hash.Remove (name);
1246 entries.RemoveAt (i);
1248 method_b.SetPartialDefinition (method_a);
1249 method_a.caching_flags |= MemberCore.Flags.PartialDefinitionExists;
1254 if (method_a.IsStatic != method_b.IsStatic) {
1255 Report.SymbolRelatedToPreviousError (ce);
1256 Report.Error (763, member.Location,
1257 "A partial method declaration and partial method implementation must be both `static' or neither");
1260 Report.SymbolRelatedToPreviousError (ce);
1261 Report.Error (764, member.Location,
1262 "A partial method declaration and partial method implementation must be both `unsafe' or neither");
1266 Report.SymbolRelatedToPreviousError (ce);
1267 if (method_a.IsPartialDefinition) {
1268 Report.Error (756, member.Location, "A partial method `{0}' declaration is already defined",
1269 member.GetSignatureForError ());
1272 Report.Error (757, member.Location, "A partial method `{0}' implementation is already defined",
1273 member.GetSignatureForError ());
1277 Report.SymbolRelatedToPreviousError (ce);
1279 bool is_reserved_a = member is AbstractPropertyEventMethod || member is Operator;
1280 bool is_reserved_b = ((MethodSpec) ce).IsReservedMethod;
1282 if (is_reserved_a || is_reserved_b) {
1283 Report.Error (82, member.Location, "A member `{0}' is already reserved",
1285 ce.GetSignatureForError () :
1286 member.GetSignatureForError ());
1290 Report.SymbolRelatedToPreviousError (ce);
1293 if (member is Operator && ce.Kind == MemberKind.Operator) {
1294 Report.Error (557, member.Location, "Duplicate user-defined conversion in type `{0}'",
1295 member.Parent.GetSignatureForError ());
1299 Report.Error (111, member.Location,
1300 "A member `{0}' is already defined. Rename this member or use different parameter types",
1301 member.GetSignatureForError ());