2 // class.cs: Class and Struct handlers
4 // Authors: Miguel de Icaza (miguel@gnu.org)
5 // Martin Baulig (martin@ximian.com)
6 // Marek Safar (marek.safar@seznam.cz)
8 // Licensed under the terms of the GNU GPL
10 // (C) 2001, 2002, 2003 Ximian, Inc (http://www.ximian.com)
11 // (C) 2004 Novell, Inc
14 // 2002-10-11 Miguel de Icaza <miguel@ximian.com>
16 // * class.cs: Following the comment from 2002-09-26 to AddMethod, I
17 // have fixed a remaining problem: not every AddXXXX was adding a
18 // fully qualified name.
20 // Now everyone registers a fully qualified name in the DeclSpace as
21 // being defined instead of the partial name.
23 // Downsides: we are slower than we need to be due to the excess
24 // copies and the names being registered this way.
26 // The reason for this is that we currently depend (on the corlib
27 // bootstrap for instance) that types are fully qualified, because
28 // we dump all the types in the namespace, and we should really have
29 // types inserted into the proper namespace, so we can only store the
30 // basenames in the defined_names array.
35 using System.Collections;
36 using System.Collections.Specialized;
37 using System.Reflection;
38 using System.Reflection.Emit;
39 using System.Runtime.CompilerServices;
40 using System.Runtime.InteropServices;
41 using System.Security;
42 using System.Security.Permissions;
45 #if BOOTSTRAP_WITH_OLDLIB
46 using XmlElement = System.Object;
51 using Mono.CompilerServices.SymbolWriter;
53 namespace Mono.CSharp {
63 /// This is the base class for structs and classes.
65 public abstract class TypeContainer : DeclSpace, IMemberContainer {
67 public class MemberCoreArrayList: ArrayList
70 /// Defines the MemberCore objects that are in this array
72 public virtual void DefineContainerMembers ()
74 foreach (MemberCore mc in this) {
77 } catch (Exception e) {
78 throw new InternalErrorException (mc.Location, mc.GetSignatureForError (), e);
83 public virtual void Emit ()
85 foreach (MemberCore mc in this)
90 public class MethodArrayList : MemberCoreArrayList
98 CachedMethods cached_method;
99 TypeContainer container;
101 public MethodArrayList (TypeContainer container)
103 this.container = container;
107 /// Method container contains Equals method
109 public bool HasEquals {
111 cached_method |= CachedMethods.Equals;
115 return (cached_method & CachedMethods.Equals) != 0;
120 /// Method container contains GetHashCode method
122 public bool HasGetHashCode {
124 cached_method |= CachedMethods.GetHashCode;
128 return (cached_method & CachedMethods.GetHashCode) != 0;
132 public override void DefineContainerMembers ()
134 base.DefineContainerMembers ();
136 if (HasEquals && !HasGetHashCode) {
137 Report.Warning (659, 3, container.Location, "`{0}' overrides Object.Equals(object) but does not override Object.GetHashCode()", container.GetSignatureForError ());
142 public sealed class IndexerArrayList : MemberCoreArrayList
145 /// The indexer name for this container
147 public string IndexerName = DefaultIndexerName;
149 bool seen_normal_indexers = false;
151 TypeContainer container;
153 public IndexerArrayList (TypeContainer container)
155 this.container = container;
159 /// Defines the indexers, and also verifies that the IndexerNameAttribute in the
160 /// class is consistent. Either it is `Item' or it is the name defined by all the
161 /// indexers with the `IndexerName' attribute.
163 /// Turns out that the IndexerNameAttribute is applied to each indexer,
164 /// but it is never emitted, instead a DefaultMember attribute is attached
167 public override void DefineContainerMembers()
169 base.DefineContainerMembers ();
171 string class_indexer_name = null;
174 // If there's both an explicit and an implicit interface implementation, the
175 // explicit one actually implements the interface while the other one is just
176 // a normal indexer. See bug #37714.
179 // Invariant maintained by AddIndexer(): All explicit interface indexers precede normal indexers
180 foreach (Indexer i in this) {
181 if (i.InterfaceType != null) {
182 if (seen_normal_indexers)
183 throw new Exception ("Internal Error: 'Indexers' array not sorted properly.");
187 seen_normal_indexers = true;
189 if (class_indexer_name == null) {
190 class_indexer_name = i.ShortName;
194 if (i.ShortName != class_indexer_name)
195 Report.Error (668, i.Location, "Two indexers have different names; the IndexerName attribute must be used with the same name on every indexer within a type");
198 if (class_indexer_name != null)
199 IndexerName = class_indexer_name;
202 public override void Emit ()
206 if (!seen_normal_indexers)
209 CustomAttributeBuilder cb = new CustomAttributeBuilder (TypeManager.default_member_ctor, new string [] { IndexerName });
210 container.TypeBuilder.SetCustomAttribute (cb);
214 public class OperatorArrayList: MemberCoreArrayList
216 TypeContainer container;
218 public OperatorArrayList (TypeContainer container)
220 this.container = container;
224 // Operator pair checking
229 public Type ret_type;
230 public Type type1, type2;
232 public Operator.OpType ot;
234 public OperatorEntry (int f, Operator o)
238 ret_type = o.MemberType;
239 Type [] pt = o.ParameterTypes;
246 public override int GetHashCode ()
248 return ret_type.GetHashCode ();
251 public override bool Equals (object o)
253 OperatorEntry other = (OperatorEntry) o;
255 if (other.ret_type != ret_type)
257 if (other.type1 != type1)
259 if (other.type2 != type2)
266 // Checks that some operators come in pairs:
272 // They are matched based on the return type and the argument types
274 void CheckPairedOperators ()
276 IDictionary pairs = new HybridDictionary ();
277 Operator true_op = null;
278 Operator false_op = null;
279 bool has_equality_or_inequality = false;
281 // Register all the operators we care about.
282 foreach (Operator op in this){
285 // Skip erroneous code.
286 if (op.MethodBuilder == null)
289 switch (op.OperatorType){
290 case Operator.OpType.Equality:
292 has_equality_or_inequality = true;
294 case Operator.OpType.Inequality:
296 has_equality_or_inequality = true;
299 case Operator.OpType.True:
302 case Operator.OpType.False:
306 case Operator.OpType.GreaterThan:
308 case Operator.OpType.LessThan:
311 case Operator.OpType.GreaterThanOrEqual:
313 case Operator.OpType.LessThanOrEqual:
319 OperatorEntry oe = new OperatorEntry (reg, op);
321 object o = pairs [oe];
325 oe = (OperatorEntry) o;
330 if (true_op != null){
331 if (false_op == null)
332 Report.Error (216, true_op.Location, "The operator `{0}' requires a matching operator `false' to also be defined",
333 true_op.GetSignatureForError ());
334 } else if (false_op != null)
335 Report.Error (216, false_op.Location, "The operator `{0}' requires a matching operator `true' to also be defined",
336 false_op.GetSignatureForError ());
339 // Look for the mistakes.
341 foreach (DictionaryEntry de in pairs){
342 OperatorEntry oe = (OperatorEntry) de.Key;
349 case Operator.OpType.Equality:
352 case Operator.OpType.Inequality:
355 case Operator.OpType.GreaterThan:
358 case Operator.OpType.LessThan:
361 case Operator.OpType.GreaterThanOrEqual:
364 case Operator.OpType.LessThanOrEqual:
368 Report.Error (216, oe.op.Location,
369 "The operator `{0}' requires a matching operator `{1}' to also be defined",
370 oe.op.GetSignatureForError (), s);
373 if (has_equality_or_inequality && (RootContext.WarningLevel > 2)) {
374 if (container.Methods == null || !container.Methods.HasEquals)
375 Report.Warning (660, 2, container.Location, "`{0}' defines operator == or operator != but does not override Object.Equals(object o)", container.GetSignatureForError ());
377 if (container.Methods == null || !container.Methods.HasGetHashCode)
378 Report.Warning (661, 2, container.Location, "`{0}' defines operator == or operator != but does not override Object.GetHashCode()", container.GetSignatureForError ());
382 public override void DefineContainerMembers ()
384 base.DefineContainerMembers ();
385 CheckPairedOperators ();
390 // Whether this is a struct, class or interface
391 public readonly Kind Kind;
393 // Holds a list of classes and structures
394 protected ArrayList types;
396 // Holds the list of properties
397 MemberCoreArrayList properties;
399 // Holds the list of enumerations
400 MemberCoreArrayList enums;
402 // Holds the list of delegates
403 MemberCoreArrayList delegates;
405 // Holds the list of constructors
406 protected MemberCoreArrayList instance_constructors;
408 // Holds the list of fields
409 MemberCoreArrayList fields;
411 // Holds a list of fields that have initializers
412 protected ArrayList initialized_fields;
414 // Holds a list of static fields that have initializers
415 protected ArrayList initialized_static_fields;
417 // Holds the list of constants
418 MemberCoreArrayList constants;
421 MemberCoreArrayList interfaces;
423 // Holds the methods.
424 MethodArrayList methods;
427 protected MemberCoreArrayList events;
429 // Holds the indexers
430 IndexerArrayList indexers;
432 // Holds the operators
433 MemberCoreArrayList operators;
435 // Holds the compiler generated classes
436 ArrayList compiler_generated;
439 // Pointers to the default constructor and the default static constructor
441 protected Constructor default_constructor;
442 protected Constructor default_static_constructor;
445 // Points to the first non-static field added to the container.
447 // This is an arbitrary choice. We are interested in looking at _some_ non-static field,
448 // and the first one's as good as any.
450 FieldBase first_nonstatic_field = null;
453 // This one is computed after we can distinguish interfaces
454 // from classes from the arraylist `type_bases'
457 TypeExpr[] iface_exprs;
460 ArrayList type_bases;
462 bool members_resolved;
463 bool members_resolved_ok;
464 bool members_defined;
465 bool members_defined_ok;
467 // The interfaces we implement.
468 protected Type[] ifaces;
470 // The base member cache and our member cache
471 MemberCache base_cache;
472 MemberCache member_cache;
474 public const string DefaultIndexerName = "Item";
477 GenericTypeParameterBuilder[] gen_params;
480 ArrayList partial_parts;
483 /// The pending methods that need to be implemented
484 // (interfaces or abstract methods)
486 PendingImplementation pending;
488 public TypeContainer (NamespaceEntry ns, DeclSpace parent, MemberName name,
489 Attributes attrs, Kind kind)
490 : base (ns, parent, name, attrs)
492 if (parent != null && parent.NamespaceEntry != ns)
493 throw new InternalErrorException ("A nested type should be in the same NamespaceEntry as its enclosing class");
496 this.PartialContainer = this;
499 public bool AddMember (MemberCore symbol)
501 return AddToContainer (symbol, symbol.MemberName.MethodName);
504 protected virtual bool AddMemberType (DeclSpace ds)
506 return AddToContainer (ds, ds.Basename);
509 public void AddConstant (Const constant)
511 if (!AddMember (constant))
514 if (constants == null)
515 constants = new MemberCoreArrayList ();
517 constants.Add (constant);
520 public void AddEnum (Mono.CSharp.Enum e)
522 if (!AddMemberType (e))
526 enums = new MemberCoreArrayList ();
531 public TypeContainer AddTypeContainer (TypeContainer tc, bool is_interface)
533 if (!AddMemberType (tc))
537 if (interfaces == null)
538 interfaces = new MemberCoreArrayList ();
542 types = new ArrayList (2);
548 public virtual TypeContainer AddPartial (TypeContainer nextPart, bool is_interface)
550 return AddPartial (nextPart, nextPart.Basename, is_interface);
553 protected TypeContainer AddPartial (TypeContainer nextPart, string name, bool is_interface)
555 nextPart.ModFlags |= Modifiers.PARTIAL;
556 TypeContainer tc = defined_names [name] as TypeContainer;
559 return AddTypeContainer (nextPart, is_interface);
561 if ((tc.ModFlags & Modifiers.PARTIAL) == 0) {
562 Report.SymbolRelatedToPreviousError (tc);
563 Error_MissingPartialModifier (nextPart);
567 if (tc.Kind != nextPart.Kind) {
568 Report.SymbolRelatedToPreviousError (tc);
569 Report.Error (261, nextPart.Location,
570 "Partial declarations of `{0}' must be all classes, all structs or all interfaces",
571 nextPart.GetSignatureForError ());
575 if ((tc.ModFlags & Modifiers.Accessibility) != (nextPart.ModFlags & Modifiers.Accessibility) &&
576 ((tc.ModFlags & Modifiers.DEFAULT_ACCESS_MODIFER) == 0 &&
577 (nextPart.ModFlags & Modifiers.DEFAULT_ACCESS_MODIFER) == 0)) {
578 Report.SymbolRelatedToPreviousError (tc);
579 Report.Error (262, nextPart.Location,
580 "Partial declarations of `{0}' have conflicting accessibility modifiers",
581 nextPart.GetSignatureForError ());
585 if (tc.MemberName.IsGeneric) {
586 TypeParameter[] tc_names = tc.TypeParameters;
587 TypeParameterName[] part_names = nextPart.MemberName.TypeArguments.GetDeclarations ();
589 for (int i = 0; i < tc_names.Length; ++i) {
590 if (tc_names[i].Name == part_names[i].Name)
593 Report.SymbolRelatedToPreviousError (part_names[i].Location, "");
594 Report.Error (264, tc.Location, "Partial declarations of `{0}' must have the same type parameter names in the same order",
595 tc.GetSignatureForError ());
600 if (tc.partial_parts == null)
601 tc.partial_parts = new ArrayList (1);
603 tc.ModFlags |= nextPart.ModFlags;
604 if (nextPart.attributes != null) {
605 if (tc.attributes == null)
606 tc.attributes = nextPart.attributes;
608 tc.attributes.AddAttributes (nextPart.attributes.Attrs);
611 nextPart.PartialContainer = tc;
612 tc.partial_parts.Add (nextPart);
616 public void AddDelegate (Delegate d)
618 if (!AddMemberType (d))
621 if (delegates == null)
622 delegates = new MemberCoreArrayList ();
627 public void AddMethod (Method method)
629 if (!AddMember (method))
633 methods = new MethodArrayList (this);
635 if (method.MemberName.Left != null)
636 methods.Insert (0, method);
638 methods.Add (method);
642 // Do not use this method: use AddMethod.
644 // This is only used by iterators.
646 public void AppendMethod (Method method)
648 if (!AddMember (method))
652 methods = new MethodArrayList (this);
654 methods.Add (method);
657 public void AddConstructor (Constructor c)
659 if (c.Name != MemberName.Name) {
660 Report.Error (1520, c.Location, "Class, struct, or interface method must have a return type");
663 bool is_static = (c.ModFlags & Modifiers.STATIC) != 0;
666 if (default_static_constructor != null) {
667 Report.SymbolRelatedToPreviousError (default_static_constructor);
668 Report.Error (111, c.Location, Error111, c.GetSignatureForError ());
672 default_static_constructor = c;
674 if (c.Parameters.Empty){
675 if (default_constructor != null) {
676 Report.SymbolRelatedToPreviousError (default_constructor);
677 Report.Error (111, c.Location, Error111, c.GetSignatureForError ());
680 default_constructor = c;
683 if (instance_constructors == null)
684 instance_constructors = new MemberCoreArrayList ();
686 instance_constructors.Add (c);
690 internal static string Error111 {
692 return "`{0}' is already defined. Rename this member or use different parameter types";
696 public void AddField (FieldMember field)
698 if (!AddMember (field))
702 fields = new MemberCoreArrayList ();
706 if ((field.ModFlags & Modifiers.STATIC) != 0)
709 if (first_nonstatic_field == null) {
710 first_nonstatic_field = field;
714 if (Kind == Kind.Struct &&
715 first_nonstatic_field.Parent != field.Parent &&
716 RootContext.WarningLevel >= 3) {
717 Report.SymbolRelatedToPreviousError (first_nonstatic_field.Parent);
718 Report.Warning (282, 3, field.Location,
719 "struct instance field `{0}' found in different declaration from instance field `{1}'",
720 field.GetSignatureForError (), first_nonstatic_field.GetSignatureForError ());
724 public void AddProperty (Property prop)
726 if (!AddMember (prop) ||
727 !AddMember (prop.Get) || !AddMember (prop.Set))
730 if (properties == null)
731 properties = new MemberCoreArrayList ();
733 if (prop.MemberName.Left != null)
734 properties.Insert (0, prop);
736 properties.Add (prop);
739 public void AddEvent (Event e)
744 if (e is EventProperty) {
745 if (!AddMember (e.Add))
748 if (!AddMember (e.Remove))
753 events = new MemberCoreArrayList ();
759 /// Indexer has special handling in constrast to other AddXXX because the name can be driven by IndexerNameAttribute
761 public void AddIndexer (Indexer i)
763 if (indexers == null)
764 indexers = new IndexerArrayList (this);
766 if (i.IsExplicitImpl)
767 indexers.Insert (0, i);
772 public void AddOperator (Operator op)
777 if (operators == null)
778 operators = new OperatorArrayList (this);
783 public void AddCompilerGeneratedClass (CompilerGeneratedClass c)
785 Report.Debug (64, "ADD COMPILER GENERATED CLASS", this, c);
787 if (compiler_generated == null)
788 compiler_generated = new ArrayList ();
790 compiler_generated.Add (c);
793 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
795 if (a.Type == TypeManager.default_member_type) {
796 if (Indexers != null) {
797 Report.Error (646, a.Location, "Cannot specify the `DefaultMember' attribute on type containing an indexer");
802 base.ApplyAttributeBuilder (a, cb);
805 public override AttributeTargets AttributeTargets {
807 throw new NotSupportedException ();
811 public ArrayList Types {
817 public MethodArrayList Methods {
823 public ArrayList Constants {
829 public ArrayList Interfaces {
835 public ArrayList CompilerGenerated {
837 return compiler_generated;
841 protected Type BaseType {
843 return TypeBuilder.BaseType;
847 public ArrayList Bases {
857 public ArrayList Fields {
863 public ArrayList InstanceConstructors {
865 return instance_constructors;
869 public ArrayList Properties {
875 public ArrayList Events {
881 public ArrayList Enums {
887 public ArrayList Indexers {
893 public ArrayList Operators {
899 public ArrayList Delegates {
905 protected override TypeAttributes TypeAttr {
907 return Modifiers.TypeAttr (ModFlags, IsTopLevel) | base.TypeAttr;
911 public string IndexerName {
913 return indexers == null ? DefaultIndexerName : indexers.IndexerName;
917 public bool IsComImport {
919 if (OptAttributes == null)
922 return OptAttributes.Contains (TypeManager.comimport_attr_type);
926 public virtual void RegisterFieldForInitialization (FieldBase field)
928 if ((field.ModFlags & Modifiers.STATIC) != 0){
929 if (initialized_static_fields == null)
930 initialized_static_fields = new ArrayList (4);
932 initialized_static_fields.Add (field);
934 if (initialized_fields == null)
935 initialized_fields = new ArrayList (4);
937 initialized_fields.Add (field);
942 // Emits the instance field initializers
944 public bool EmitFieldInitializers (EmitContext ec)
949 fields = initialized_static_fields;
951 fields = initialized_fields;
957 foreach (FieldBase f in fields) {
958 f.EmitInitializer (ec);
963 public override string DocComment {
975 public PendingImplementation PendingImplementations {
976 get { return pending; }
979 public override bool GetClsCompliantAttributeValue ()
981 if (PartialContainer != this)
982 return PartialContainer.GetClsCompliantAttributeValue ();
984 return base.GetClsCompliantAttributeValue ();
987 public void AddBasesForPart (DeclSpace part, ArrayList bases)
989 // FIXME: get rid of partial_parts and store lists of bases of each part here
990 // assumed, not verified: 'part' is in 'partial_parts'
991 ((TypeContainer) part).Bases = bases;
994 TypeExpr[] GetNormalBases (out TypeExpr base_class)
1000 int count = Bases.Count;
1001 int start = 0, i, j;
1003 if (Kind == Kind.Class){
1004 TypeExpr name = ((Expression) Bases [0]).ResolveAsBaseTerminal (this, false);
1010 if (!name.IsInterface) {
1011 // base_class could be a class, struct, enum, delegate.
1012 // This is validated in GetClassBases.
1018 TypeExpr [] ifaces = new TypeExpr [count-start];
1020 for (i = start, j = 0; i < count; i++, j++){
1021 TypeExpr resolved = ((Expression) Bases [i]).ResolveAsBaseTerminal (this, false);
1022 if (resolved == null) {
1026 ifaces [j] = resolved;
1029 return ifaces.Length == 0 ? null : ifaces;
1033 TypeExpr[] GetNormalPartialBases (ref TypeExpr base_class)
1035 ArrayList ifaces = new ArrayList (0);
1036 if (iface_exprs != null)
1037 ifaces.AddRange (iface_exprs);
1039 foreach (TypeContainer part in partial_parts) {
1040 TypeExpr new_base_class;
1041 TypeExpr[] new_ifaces = part.GetClassBases (out new_base_class);
1042 if (new_base_class != TypeManager.system_object_expr) {
1043 if (base_class == TypeManager.system_object_expr)
1044 base_class = new_base_class;
1046 if (new_base_class != null && !new_base_class.Equals (base_class)) {
1047 Report.SymbolRelatedToPreviousError (base_class.Location, "");
1048 Report.Error (263, part.Location,
1049 "Partial declarations of `{0}' must not specify different base classes",
1050 part.GetSignatureForError ());
1057 if (new_ifaces == null)
1060 foreach (TypeExpr iface in new_ifaces) {
1061 if (ifaces.Contains (iface))
1068 if (ifaces.Count == 0)
1071 return (TypeExpr[])ifaces.ToArray (typeof (TypeExpr));
1075 /// This function computes the Base class and also the
1076 /// list of interfaces that the class or struct @c implements.
1078 /// The return value is an array (might be null) of
1079 /// interfaces implemented (as Types).
1081 /// The @base_class argument is set to the base object or null
1082 /// if this is `System.Object'.
1084 public virtual TypeExpr [] GetClassBases (out TypeExpr base_class)
1086 TypeExpr[] ifaces = GetNormalBases (out base_class);
1091 int count = ifaces.Length;
1093 for (int i = 0; i < count; i++) {
1094 TypeExpr iface = (TypeExpr) ifaces [i];
1096 if (!iface.IsInterface) {
1097 if (Kind != Kind.Class) {
1098 // TODO: location of symbol related ....
1099 Error_TypeInListIsNotInterface (Location, iface.FullName);
1101 else if (base_class != null)
1102 Report.Error (1721, Location, "`{0}': Classes cannot have multiple base classes (`{1}' and `{2}')",
1103 GetSignatureForError (), base_class.GetSignatureForError (), iface.GetSignatureForError ());
1105 Report.Error (1722, Location, "`{0}': Base class `{1}' must be specified as first",
1106 GetSignatureForError (), iface.GetSignatureForError ());
1111 for (int x = 0; x < i; x++) {
1112 if (iface.Equals (ifaces [x])) {
1113 Report.Error (528, Location,
1114 "`{0}' is already listed in " +
1115 "interface list", iface.GetSignatureForError ());
1120 if ((Kind == Kind.Interface) &&
1121 !iface.AsAccessible (Parent, ModFlags)) {
1122 Report.Error (61, Location,
1123 "Inconsistent accessibility: base " +
1124 "interface `{0}' is less accessible " +
1125 "than interface `{1}'", iface.Name,
1133 bool CheckGenericInterfaces (Type[] ifaces)
1136 ArrayList already_checked = new ArrayList ();
1138 for (int i = 0; i < ifaces.Length; i++) {
1139 Type iface = ifaces [i];
1140 foreach (Type t in already_checked) {
1144 Type[] infered = new Type [CountTypeParameters];
1145 if (!TypeManager.MayBecomeEqualGenericInstances (iface, t, infered, null))
1148 Report.Error (695, Location,
1149 "`{0}' cannot implement both `{1}' and `{2}' " +
1150 "because they may unify for some type parameter substitutions",
1151 TypeManager.CSharpName (TypeBuilder), TypeManager.CSharpName (iface),
1152 TypeManager.CSharpName (t));
1156 already_checked.Add (iface);
1165 protected void Error_TypeInListIsNotInterface (Location loc, string type)
1167 Report.Error (527, loc, "Type `{0}' in interface list is not an interface", type);
1170 bool DefineTypeBuilder ()
1174 if (TypeManager.NamespaceClash (Name, Location)) {
1178 ModuleBuilder builder = CodeGen.Module.Builder;
1179 Type default_parent = null;
1180 if (Kind == Kind.Struct)
1181 default_parent = TypeManager.value_type;
1182 TypeBuilder = builder.DefineType (
1183 Name, TypeAttr, default_parent, null);
1185 TypeBuilder builder = Parent.TypeBuilder;
1187 TypeBuilder = builder.DefineNestedType (
1188 Basename, TypeAttr, null, null);
1190 } catch (ArgumentException) {
1191 Report.RuntimeMissingSupport (Location, "static classes");
1195 TypeManager.AddUserType (this);
1199 string[] param_names = new string [TypeParameters.Length];
1200 for (int i = 0; i < TypeParameters.Length; i++)
1201 param_names [i] = TypeParameters [i].Name;
1203 gen_params = TypeBuilder.DefineGenericParameters (param_names);
1205 int offset = CountTypeParameters - CurrentTypeParameters.Length;
1206 for (int i = offset; i < gen_params.Length; i++)
1207 CurrentTypeParameters [i - offset].Define (gen_params [i]);
1211 iface_exprs = GetClassBases (out base_type);
1212 if (partial_parts != null) {
1213 iface_exprs = GetNormalPartialBases (ref base_type);
1217 // GetClassBases calls ResolveBaseTypeExpr() on the various type expressions involved,
1218 // which in turn should have called DefineType()s on base types if necessary.
1220 // None of the code below should trigger DefineType()s on classes that we depend on.
1221 // Thus, we are eligible to be on the topological sort `type_container_resolve_order'.
1223 // Let's do it as soon as possible, since code below can call DefineType() on classes
1224 // that depend on us to be populated before they are.
1226 if (!(this is CompilerGeneratedClass))
1227 RootContext.RegisterOrder (this);
1229 if (IsGeneric && base_type != null && TypeManager.IsAttributeType (base_type.Type)) {
1230 Report.Error (698, base_type.Location,
1231 "A generic type cannot derive from `{0}' because it is an attribute class",
1236 if (!CheckRecursiveDefinition (this))
1239 if (base_type != null) {
1240 TypeBuilder.SetParent (base_type.Type);
1242 ObsoleteAttribute obsolete_attr = AttributeTester.GetObsoleteAttribute (base_type.Type);
1243 if (obsolete_attr != null && !IsInObsoleteScope)
1244 AttributeTester.Report_ObsoleteMessage (obsolete_attr, base_type.GetSignatureForError (), Location);
1247 // add interfaces that were not added at type creation
1248 if (iface_exprs != null) {
1249 ifaces = TypeManager.ExpandInterfaces (iface_exprs);
1253 foreach (Type itype in ifaces)
1254 TypeBuilder.AddInterfaceImplementation (itype);
1256 foreach (TypeExpr ie in iface_exprs) {
1257 ObsoleteAttribute oa = AttributeTester.GetObsoleteAttribute (ie.Type);
1258 if ((oa != null) && !IsInObsoleteScope)
1259 AttributeTester.Report_ObsoleteMessage (
1260 oa, ie.GetSignatureForError (), Location);
1263 if (!CheckGenericInterfaces (ifaces))
1266 TypeManager.RegisterBuilder (TypeBuilder, ifaces);
1273 // Defines the type in the appropriate ModuleBuilder or TypeBuilder.
1275 public override TypeBuilder DefineType ()
1277 if (TypeBuilder != null)
1283 if (!DefineTypeBuilder ()) {
1288 if (partial_parts != null) {
1289 foreach (TypeContainer part in partial_parts)
1290 part.TypeBuilder = TypeBuilder;
1293 if (!(this is CompilerGeneratedClass)) {
1294 if (!ResolveMembers ()) {
1300 if (!DefineNestedTypes ()) {
1308 public bool ResolveMembers ()
1310 if (members_resolved)
1311 return members_resolved_ok;
1313 members_resolved_ok = DoResolveMembers ();
1314 members_resolved = true;
1316 return members_resolved_ok;
1319 protected virtual bool DoResolveMembers ()
1321 if (methods != null) {
1322 foreach (Method method in methods) {
1323 if (!method.ResolveMembers ())
1328 if (instance_constructors != null) {
1329 foreach (Constructor c in instance_constructors) {
1330 if (!c.ResolveMembers ())
1335 if (default_static_constructor != null) {
1336 if (!default_static_constructor.ResolveMembers ())
1340 if (operators != null) {
1341 foreach (Operator o in operators) {
1342 if (!o.ResolveMembers ())
1347 if (properties != null) {
1348 foreach (PropertyBase p in properties) {
1349 if (!p.Get.IsDummy && !p.Get.ResolveMembers ())
1351 if (!p.Set.IsDummy && !p.Set.ResolveMembers ())
1356 if (indexers != null) {
1357 foreach (PropertyBase p in indexers) {
1358 if (!p.Get.IsDummy && !p.Get.ResolveMembers ())
1360 if (!p.Set.IsDummy && !p.Set.ResolveMembers ())
1368 Constraints [] constraints;
1369 public override void SetParameterInfo (ArrayList constraints_list)
1371 if (PartialContainer == this) {
1372 base.SetParameterInfo (constraints_list);
1376 if (constraints_list == null)
1379 constraints = new Constraints [PartialContainer.CountCurrentTypeParameters];
1381 TypeParameter[] current_params = PartialContainer.CurrentTypeParameters;
1382 for (int i = 0; i < constraints.Length; i++) {
1383 foreach (Constraints constraint in constraints_list) {
1384 if (constraint.TypeParameter == current_params [i].Name) {
1385 constraints [i] = constraint;
1392 bool UpdateTypeParameterConstraints ()
1394 if (constraints == null)
1397 TypeParameter[] current_params = PartialContainer.CurrentTypeParameters;
1398 for (int i = 0; i < current_params.Length; i++) {
1399 if (!current_params [i].UpdateConstraints (this, constraints [i])) {
1400 Report.SymbolRelatedToPreviousError (Location, "");
1401 Report.Error (265, PartialContainer.Location,
1402 "Partial declarations of `{0}' have inconsistent constraints for type parameter `{1}'",
1403 PartialContainer.GetSignatureForError (), current_params [i].Name);
1411 public bool ResolveType ()
1413 if (!DoResolveType ())
1416 if (compiler_generated != null) {
1417 foreach (CompilerGeneratedClass c in compiler_generated)
1418 if (!c.ResolveType ())
1425 protected virtual bool DoResolveType ()
1427 if ((base_type != null) &&
1428 (base_type.ResolveAsTypeTerminal (this, false) == null)) {
1436 if (PartialContainer != this)
1437 throw new InternalErrorException ();
1439 TypeExpr current_type = null;
1441 foreach (TypeParameter type_param in CurrentTypeParameters) {
1442 if (!type_param.Resolve (this)) {
1448 if (partial_parts != null) {
1449 foreach (TypeContainer part in partial_parts) {
1450 if (!part.UpdateTypeParameterConstraints ()) {
1457 foreach (TypeParameter type_param in TypeParameters) {
1458 if (!type_param.DefineType (this)) {
1464 current_type = new ConstructedType (TypeBuilder, TypeParameters, Location);
1466 foreach (TypeParameter type_param in TypeParameters)
1467 if (!type_param.CheckDependencies ()) {
1472 if (current_type != null) {
1473 current_type = current_type.ResolveAsTypeTerminal (this, false);
1474 if (current_type == null) {
1479 CurrentType = current_type.Type;
1485 protected virtual bool DefineNestedTypes ()
1487 if (Interfaces != null) {
1488 foreach (TypeContainer iface in Interfaces)
1489 if (iface.DefineType () == null)
1493 if (Types != null) {
1494 foreach (TypeContainer tc in Types)
1495 if (tc.DefineType () == null)
1499 if (Delegates != null) {
1500 foreach (Delegate d in Delegates)
1501 if (d.DefineType () == null)
1505 if (Enums != null) {
1506 foreach (Enum en in Enums)
1507 if (en.DefineType () == null)
1511 if (compiler_generated != null) {
1512 foreach (CompilerGeneratedClass c in compiler_generated) {
1513 if (c.DefineType () == null)
1521 TypeContainer InTransit;
1523 protected bool CheckRecursiveDefinition (TypeContainer tc)
1525 if (InTransit != null) {
1526 Report.SymbolRelatedToPreviousError (this);
1527 if (this is Interface)
1529 529, tc.Location, "Inherited interface `{0}' causes a " +
1530 "cycle in the interface hierarchy of `{1}'",
1531 GetSignatureForError (), tc.GetSignatureForError ());
1534 146, tc.Location, "Circular base class dependency " +
1535 "involving `{0}' and `{1}'",
1536 tc.GetSignatureForError (), GetSignatureForError ());
1542 if (base_type != null) {
1543 Type t = TypeManager.DropGenericTypeArguments (base_type.Type);
1544 TypeContainer ptc = TypeManager.LookupTypeContainer (t);
1545 if ((ptc != null) && !ptc.CheckRecursiveDefinition (this))
1549 if (iface_exprs != null) {
1550 foreach (TypeExpr iface in iface_exprs) {
1551 Type itype = TypeManager.DropGenericTypeArguments (iface.Type);
1552 TypeContainer ptc = TypeManager.LookupTypeContainer (itype);
1553 if ((ptc != null) && !ptc.CheckRecursiveDefinition (this))
1558 if (!IsTopLevel && !Parent.PartialContainer.CheckRecursiveDefinition (this))
1565 public static void Error_KeywordNotAllowed (Location loc)
1567 Report.Error (1530, loc, "Keyword `new' is not allowed on namespace elements");
1571 /// Populates our TypeBuilder with fields and methods
1573 public override bool DefineMembers ()
1575 if (members_defined)
1576 return members_defined_ok;
1578 if (!base.DefineMembers ())
1581 members_defined_ok = DoDefineMembers ();
1582 members_defined = true;
1584 return members_defined_ok;
1587 protected virtual bool DoDefineMembers ()
1589 if (iface_exprs != null) {
1590 foreach (TypeExpr iface in iface_exprs) {
1591 ConstructedType ct = iface as ConstructedType;
1592 if ((ct != null) && !ct.CheckConstraints (this))
1597 if (base_type != null) {
1598 ConstructedType ct = base_type as ConstructedType;
1599 if ((ct != null) && !ct.CheckConstraints (this))
1604 MemberInfo conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Basename, false);
1605 if (conflict_symbol == null) {
1606 if ((RootContext.WarningLevel >= 4) && ((ModFlags & Modifiers.NEW) != 0))
1607 Report.Warning (109, 4, Location, "The member `{0}' does not hide an inherited member. The new keyword is not required", GetSignatureForError ());
1609 if ((ModFlags & Modifiers.NEW) == 0) {
1610 Report.SymbolRelatedToPreviousError (conflict_symbol);
1611 Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
1612 GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
1617 DefineContainerMembers (constants);
1618 DefineContainerMembers (fields);
1620 if (Kind == Kind.Struct || Kind == Kind.Class) {
1621 pending = PendingImplementation.GetPendingImplementations (this);
1625 // Constructors are not in the defined_names array
1627 DefineContainerMembers (instance_constructors);
1629 DefineContainerMembers (properties);
1630 DefineContainerMembers (events);
1631 DefineContainerMembers (indexers);
1632 DefineContainerMembers (methods);
1633 DefineContainerMembers (operators);
1634 DefineContainerMembers (enums);
1635 DefineContainerMembers (delegates);
1637 if (CurrentType != null) {
1638 GenericType = CurrentType;
1643 member_cache = new MemberCache (this);
1644 if (partial_parts != null) {
1645 foreach (TypeContainer part in partial_parts)
1646 part.member_cache = member_cache;
1653 protected virtual void DefineContainerMembers (MemberCoreArrayList mcal)
1656 mcal.DefineContainerMembers ();
1659 public override bool Define ()
1661 if (compiler_generated != null) {
1662 foreach (CompilerGeneratedClass c in compiler_generated) {
1671 public MemberInfo FindBaseMemberWithSameName (string name, bool ignore_methods)
1673 return BaseCache == null ? null : BaseCache.FindMemberWithSameName (name, ignore_methods, null);
1677 /// This function is based by a delegate to the FindMembers routine
1679 static bool AlwaysAccept (MemberInfo m, object filterCriteria)
1685 /// This filter is used by FindMembers, and we just keep
1686 /// a global for the filter to `AlwaysAccept'
1688 static MemberFilter accepting_filter;
1691 static TypeContainer ()
1693 accepting_filter = new MemberFilter (AlwaysAccept);
1696 public MethodInfo[] GetMethods ()
1698 ArrayList members = new ArrayList ();
1702 if (methods != null) {
1703 int len = methods.Count;
1704 for (int i = 0; i < len; i++) {
1705 Method m = (Method) methods [i];
1707 members.Add (m.MethodBuilder);
1711 if (operators != null) {
1712 int len = operators.Count;
1713 for (int i = 0; i < len; i++) {
1714 Operator o = (Operator) operators [i];
1716 members.Add (o.MethodBuilder);
1720 if (properties != null) {
1721 int len = properties.Count;
1722 for (int i = 0; i < len; i++) {
1723 Property p = (Property) properties [i];
1725 if (p.GetBuilder != null)
1726 members.Add (p.GetBuilder);
1727 if (p.SetBuilder != null)
1728 members.Add (p.SetBuilder);
1732 if (indexers != null) {
1733 int len = indexers.Count;
1734 for (int i = 0; i < len; i++) {
1735 Indexer ix = (Indexer) indexers [i];
1737 if (ix.GetBuilder != null)
1738 members.Add (ix.GetBuilder);
1739 if (ix.SetBuilder != null)
1740 members.Add (ix.SetBuilder);
1744 if (events != null) {
1745 int len = events.Count;
1746 for (int i = 0; i < len; i++) {
1747 Event e = (Event) events [i];
1749 if (e.AddBuilder != null)
1750 members.Add (e.AddBuilder);
1751 if (e.RemoveBuilder != null)
1752 members.Add (e.RemoveBuilder);
1756 MethodInfo[] retMethods = new MethodInfo [members.Count];
1757 members.CopyTo (retMethods, 0);
1761 // Indicated whether container has StructLayout attribute set Explicit
1762 public bool HasExplicitLayout {
1763 get { return (caching_flags & Flags.HasExplicitLayout) != 0; }
1764 set { caching_flags |= Flags.HasExplicitLayout; }
1768 // Return the nested type with name @name. Ensures that the nested type
1769 // is defined if necessary. Do _not_ use this when you have a MemberCache handy.
1771 public Type FindNestedType (string name)
1773 if (PartialContainer != this)
1774 throw new InternalErrorException ("should not happen");
1776 ArrayList [] lists = { types, enums, delegates, interfaces };
1778 for (int j = 0; j < lists.Length; ++j) {
1779 ArrayList list = lists [j];
1783 int len = list.Count;
1784 for (int i = 0; i < len; ++i) {
1785 DeclSpace ds = (DeclSpace) list [i];
1786 if (ds.Basename == name) {
1787 return ds.DefineType ();
1795 private void FindMembers_NestedTypes (int modflags,
1796 BindingFlags bf, MemberFilter filter, object criteria,
1797 ref ArrayList members)
1799 ArrayList [] lists = { types, enums, delegates, interfaces };
1801 for (int j = 0; j < lists.Length; ++j) {
1802 ArrayList list = lists [j];
1806 int len = list.Count;
1807 for (int i = 0; i < len; i++) {
1808 DeclSpace ds = (DeclSpace) list [i];
1810 if ((ds.ModFlags & modflags) == 0)
1813 TypeBuilder tb = ds.TypeBuilder;
1815 if (!(criteria is string) || ds.Basename.Equals (criteria))
1816 tb = ds.DefineType ();
1819 if (tb != null && (filter (tb, criteria) == true)) {
1820 if (members == null)
1821 members = new ArrayList ();
1830 /// This method returns the members of this type just like Type.FindMembers would
1831 /// Only, we need to use this for types which are _being_ defined because MS'
1832 /// implementation can't take care of that.
1835 // FIXME: return an empty static array instead of null, that cleans up
1836 // some code and is consistent with some coding conventions I just found
1840 // Notice that in various cases we check if our field is non-null,
1841 // something that would normally mean that there was a bug elsewhere.
1843 // The problem happens while we are defining p-invoke methods, as those
1844 // will trigger a FindMembers, but this happens before things are defined
1846 // Since the whole process is a no-op, it is fine to check for null here.
1848 public override MemberList FindMembers (MemberTypes mt, BindingFlags bf,
1849 MemberFilter filter, object criteria)
1851 ArrayList members = null;
1854 if ((bf & BindingFlags.Public) != 0)
1855 modflags |= Modifiers.PUBLIC | Modifiers.PROTECTED |
1857 if ((bf & BindingFlags.NonPublic) != 0)
1858 modflags |= Modifiers.PRIVATE;
1860 int static_mask = 0, static_flags = 0;
1861 switch (bf & (BindingFlags.Static | BindingFlags.Instance)) {
1862 case BindingFlags.Static:
1863 static_mask = static_flags = Modifiers.STATIC;
1866 case BindingFlags.Instance:
1867 static_mask = Modifiers.STATIC;
1872 static_mask = static_flags = 0;
1876 Timer.StartTimer (TimerType.TcFindMembers);
1879 filter = accepting_filter;
1881 if ((mt & MemberTypes.Field) != 0) {
1882 if (fields != null) {
1883 int len = fields.Count;
1884 for (int i = 0; i < len; i++) {
1885 FieldMember f = (FieldMember) fields [i];
1887 if ((f.ModFlags & modflags) == 0)
1889 if ((f.ModFlags & static_mask) != static_flags)
1892 FieldBuilder fb = f.FieldBuilder;
1893 if (fb != null && filter (fb, criteria) == true) {
1894 if (members == null)
1895 members = new ArrayList ();
1902 if (constants != null) {
1903 int len = constants.Count;
1904 for (int i = 0; i < len; i++) {
1905 Const con = (Const) constants [i];
1907 if ((con.ModFlags & modflags) == 0)
1909 if ((con.ModFlags & static_mask) != static_flags)
1912 FieldBuilder fb = con.FieldBuilder;
1915 fb = con.FieldBuilder;
1917 if (fb != null && filter (fb, criteria) == true) {
1918 if (members == null)
1919 members = new ArrayList ();
1927 if ((mt & MemberTypes.Method) != 0) {
1928 if (methods != null) {
1929 int len = methods.Count;
1930 for (int i = 0; i < len; i++) {
1931 Method m = (Method) methods [i];
1933 if ((m.ModFlags & modflags) == 0)
1935 if ((m.ModFlags & static_mask) != static_flags)
1938 MethodBuilder mb = m.MethodBuilder;
1940 if (mb != null && filter (mb, criteria) == true) {
1941 if (members == null)
1942 members = new ArrayList ();
1949 if (operators != null) {
1950 int len = operators.Count;
1951 for (int i = 0; i < len; i++) {
1952 Operator o = (Operator) operators [i];
1954 if ((o.ModFlags & modflags) == 0)
1956 if ((o.ModFlags & static_mask) != static_flags)
1959 MethodBuilder ob = o.MethodBuilder;
1960 if (ob != null && filter (ob, criteria) == true) {
1961 if (members == null)
1962 members = new ArrayList ();
1969 if (events != null) {
1970 foreach (Event e in events) {
1971 if ((e.ModFlags & modflags) == 0)
1973 if ((e.ModFlags & static_mask) != static_flags)
1976 MethodBuilder b = e.AddBuilder;
1977 if (b != null && filter (b, criteria)) {
1978 if (members == null)
1979 members = new ArrayList (4);
1984 b = e.RemoveBuilder;
1985 if (b != null && filter (b, criteria)) {
1986 if (members == null)
1987 members = new ArrayList (4);
1994 if (properties != null) {
1995 int len = properties.Count;
1996 for (int i = 0; i < len; i++) {
1997 Property p = (Property) properties [i];
1999 if ((p.ModFlags & modflags) == 0)
2001 if ((p.ModFlags & static_mask) != static_flags)
2007 if (b != null && filter (b, criteria) == true) {
2008 if (members == null)
2009 members = new ArrayList ();
2015 if (b != null && filter (b, criteria) == true) {
2016 if (members == null)
2017 members = new ArrayList ();
2024 if (indexers != null) {
2025 int len = indexers.Count;
2026 for (int i = 0; i < len; i++) {
2027 Indexer ix = (Indexer) indexers [i];
2029 if ((ix.ModFlags & modflags) == 0)
2031 if ((ix.ModFlags & static_mask) != static_flags)
2037 if (b != null && filter (b, criteria) == true) {
2038 if (members == null)
2039 members = new ArrayList ();
2045 if (b != null && filter (b, criteria) == true) {
2046 if (members == null)
2047 members = new ArrayList ();
2055 if ((mt & MemberTypes.Event) != 0) {
2056 if (events != null) {
2057 int len = events.Count;
2058 for (int i = 0; i < len; i++) {
2059 Event e = (Event) events [i];
2061 if ((e.ModFlags & modflags) == 0)
2063 if ((e.ModFlags & static_mask) != static_flags)
2066 MemberInfo eb = e.EventBuilder;
2067 if (eb != null && filter (eb, criteria) == true) {
2068 if (members == null)
2069 members = new ArrayList ();
2071 members.Add (e.EventBuilder);
2077 if ((mt & MemberTypes.Property) != 0){
2078 if (properties != null) {
2079 int len = properties.Count;
2080 for (int i = 0; i < len; i++) {
2081 Property p = (Property) properties [i];
2083 if ((p.ModFlags & modflags) == 0)
2085 if ((p.ModFlags & static_mask) != static_flags)
2088 MemberInfo pb = p.PropertyBuilder;
2089 if (pb != null && filter (pb, criteria) == true) {
2090 if (members == null)
2091 members = new ArrayList ();
2093 members.Add (p.PropertyBuilder);
2098 if (indexers != null) {
2099 int len = indexers.Count;
2100 for (int i = 0; i < len; i++) {
2101 Indexer ix = (Indexer) indexers [i];
2103 if ((ix.ModFlags & modflags) == 0)
2105 if ((ix.ModFlags & static_mask) != static_flags)
2108 MemberInfo ib = ix.PropertyBuilder;
2109 if (ib != null && filter (ib, criteria) == true) {
2110 if (members == null)
2111 members = new ArrayList ();
2113 members.Add (ix.PropertyBuilder);
2119 if ((mt & MemberTypes.NestedType) != 0)
2120 FindMembers_NestedTypes (modflags, bf, filter, criteria, ref members);
2122 if ((mt & MemberTypes.Constructor) != 0){
2123 if (((bf & BindingFlags.Instance) != 0) && (instance_constructors != null)){
2124 int len = instance_constructors.Count;
2125 for (int i = 0; i < len; i++) {
2126 Constructor c = (Constructor) instance_constructors [i];
2128 ConstructorBuilder cb = c.ConstructorBuilder;
2129 if (cb != null && filter (cb, criteria) == true) {
2130 if (members == null)
2131 members = new ArrayList ();
2138 if (((bf & BindingFlags.Static) != 0) && (default_static_constructor != null)){
2139 ConstructorBuilder cb =
2140 default_static_constructor.ConstructorBuilder;
2142 if (cb != null && filter (cb, criteria) == true) {
2143 if (members == null)
2144 members = new ArrayList ();
2152 // Lookup members in base if requested.
2154 if ((bf & BindingFlags.DeclaredOnly) == 0) {
2155 if (TypeBuilder.BaseType != null) {
2156 MemberList list = FindMembers (TypeBuilder.BaseType, mt, bf, filter, criteria);
2157 if (list.Count > 0) {
2158 if (members == null)
2159 members = new ArrayList ();
2161 members.AddRange (list);
2166 Timer.StopTimer (TimerType.TcFindMembers);
2168 if (members == null)
2169 return MemberList.Empty;
2171 return new MemberList (members);
2174 public override MemberCache MemberCache {
2176 return member_cache;
2180 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
2181 MemberFilter filter, object criteria)
2183 DeclSpace ds = TypeManager.LookupDeclSpace (t);
2186 return ds.FindMembers (mt, bf, filter, criteria);
2188 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
2192 /// Emits the values for the constants
2194 public void EmitConstants ()
2196 if (constants != null)
2197 foreach (Const con in constants)
2202 static void CheckMemberUsage (MemberCoreArrayList al, string member_type)
2207 foreach (MemberCore mc in al) {
2208 if ((mc.ModFlags & Modifiers.Accessibility) != Modifiers.PRIVATE)
2212 Report.Warning (169, 3, mc.Location, "The private {0} `{1}' is never used", member_type, mc.GetSignatureForError ());
2217 public virtual void VerifyMembers ()
2220 // Check for internal or private fields that were never assigned
2222 if (RootContext.WarningLevel >= 3) {
2223 CheckMemberUsage (properties, "property");
2224 CheckMemberUsage (methods, "method");
2225 CheckMemberUsage (constants, "constant");
2227 if (fields != null){
2228 foreach (FieldMember f in fields) {
2229 if ((f.ModFlags & Modifiers.Accessibility) != Modifiers.PRIVATE)
2233 if ((f.caching_flags & Flags.IsAssigned) == 0)
2234 Report.Warning (169, 3, f.Location, "The private field `{0}' is never used", f.GetSignatureForError ());
2237 const int error_code = 414;
2239 const int error_code = 169;
2241 Report.Warning (error_code, 3, f.Location, "The private field `{0}' is assigned but its value is never used",
2242 f.GetSignatureForError ());
2248 // Only report 649 on level 4
2250 if (RootContext.WarningLevel < 4)
2253 if ((f.caching_flags & Flags.IsAssigned) != 0)
2256 Report.Warning (649, 4, f.Location, "Field `{0}' is never assigned to, and will always have its default value `{1}'",
2257 f.GetSignatureForError (), f.Type.Type.IsValueType ? Activator.CreateInstance (f.Type.Type).ToString() : "null");
2263 // TODO: move to ClassOrStruct
2264 void EmitConstructors ()
2266 if (instance_constructors == null)
2269 if (TypeBuilder.IsSubclassOf (TypeManager.attribute_type) && RootContext.VerifyClsCompliance && IsClsComplianceRequired ()) {
2270 bool has_compliant_args = false;
2272 foreach (Constructor c in instance_constructors) {
2275 if (has_compliant_args)
2278 has_compliant_args = c.HasCompliantArgs;
2280 if (!has_compliant_args)
2281 Report.Error (3015, Location, "`{0}' has no accessible constructors which use only CLS-compliant types", GetSignatureForError ());
2283 foreach (Constructor c in instance_constructors)
2289 /// Emits the code, this step is performed after all
2290 /// the types, enumerations, constructors
2292 public virtual void EmitType ()
2294 if (OptAttributes != null)
2295 OptAttributes.Emit ();
2299 int offset = CountTypeParameters - CurrentTypeParameters.Length;
2300 for (int i = offset; i < gen_params.Length; i++)
2301 CurrentTypeParameters [i - offset].EmitAttributes ();
2306 // Structs with no fields need to have at least one byte.
2307 // The right thing would be to set the PackingSize in a DefineType
2308 // but there are no functions that allow interfaces *and* the size to
2312 if (Kind == Kind.Struct && first_nonstatic_field == null){
2313 FieldBuilder fb = TypeBuilder.DefineField ("$PRIVATE$", TypeManager.byte_type,
2314 FieldAttributes.Private);
2316 if (HasExplicitLayout){
2317 object [] ctor_args = new object [1];
2320 CustomAttributeBuilder cba = new CustomAttributeBuilder (
2321 TypeManager.field_offset_attribute_ctor, ctor_args);
2322 fb.SetCustomAttribute (cba);
2328 EmitConstructors ();
2330 // Can not continue if constants are broken
2332 if (Report.Errors > 0)
2335 if (default_static_constructor != null)
2336 default_static_constructor.Emit ();
2338 if (methods != null){
2339 foreach (Method m in methods)
2343 if (operators != null)
2344 foreach (Operator o in operators)
2347 if (properties != null)
2348 foreach (Property p in properties)
2351 if (indexers != null){
2356 foreach (FieldMember f in fields)
2359 if (events != null){
2360 foreach (Event e in Events)
2364 if (delegates != null) {
2365 foreach (Delegate d in Delegates) {
2370 if (enums != null) {
2371 foreach (Enum e in enums) {
2376 if (pending != null)
2377 if (pending.VerifyPendingMethods ())
2380 if (Report.Errors > 0)
2383 if (compiler_generated != null) {
2384 foreach (CompilerGeneratedClass c in compiler_generated) {
2385 if (!c.DefineMembers ())
2386 throw new InternalErrorException ();
2388 foreach (CompilerGeneratedClass c in compiler_generated)
2393 public override void CloseType ()
2395 if ((caching_flags & Flags.CloseTypeCreated) != 0)
2399 caching_flags |= Flags.CloseTypeCreated;
2400 TypeBuilder.CreateType ();
2401 } catch (TypeLoadException){
2403 // This is fine, the code still created the type
2405 // Report.Warning (-20, "Exception while creating class: " + TypeBuilder.Name);
2406 // Console.WriteLine (e.Message);
2408 Console.WriteLine ("In type: " + Name);
2413 foreach (Enum en in Enums)
2417 foreach (TypeContainer tc in Types)
2418 if (tc.Kind == Kind.Struct)
2421 foreach (TypeContainer tc in Types)
2422 if (tc.Kind != Kind.Struct)
2426 if (Delegates != null)
2427 foreach (Delegate d in Delegates)
2430 if (CompilerGenerated != null)
2431 foreach (CompilerGeneratedClass c in CompilerGenerated)
2439 initialized_fields = null;
2440 initialized_static_fields = null;
2447 compiler_generated = null;
2448 default_constructor = null;
2449 default_static_constructor = null;
2451 OptAttributes = null;
2454 member_cache = null;
2458 // Performs the validation on a Method's modifiers (properties have
2459 // the same properties).
2461 public bool MethodModifiersValid (MemberCore mc)
2463 const int vao = (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE);
2464 const int va = (Modifiers.VIRTUAL | Modifiers.ABSTRACT);
2465 const int nv = (Modifiers.NEW | Modifiers.VIRTUAL);
2467 int flags = mc.ModFlags;
2470 // At most one of static, virtual or override
2472 if ((flags & Modifiers.STATIC) != 0){
2473 if ((flags & vao) != 0){
2474 Report.Error (112, mc.Location, "A static member `{0}' cannot be marked as override, virtual or abstract",
2475 mc.GetSignatureForError ());
2480 if (Kind == Kind.Struct){
2481 if ((flags & va) != 0){
2482 Modifiers.Error_InvalidModifier (mc.Location, "virtual or abstract");
2487 if ((flags & Modifiers.OVERRIDE) != 0 && (flags & nv) != 0){
2488 Report.Error (113, mc.Location, "A member `{0}' marked as override cannot be marked as new or virtual",
2489 mc.GetSignatureForError ());
2494 // If the declaration includes the abstract modifier, then the
2495 // declaration does not include static, virtual or extern
2497 if ((flags & Modifiers.ABSTRACT) != 0){
2498 if ((flags & Modifiers.EXTERN) != 0){
2500 180, mc.Location, "`{0}' cannot be both extern and abstract", mc.GetSignatureForError ());
2504 if ((flags & Modifiers.SEALED) != 0) {
2505 Report.Error (502, mc.Location, "`{0}' cannot be both abstract and sealed", mc.GetSignatureForError ());
2509 if ((flags & Modifiers.VIRTUAL) != 0){
2510 Report.Error (503, mc.Location, "The abstract method `{0}' cannot be marked virtual", mc.GetSignatureForError ());
2514 if ((ModFlags & Modifiers.ABSTRACT) == 0){
2515 Report.Error (513, mc.Location, "`{0}' is abstract but it is contained in nonabstract class", mc.GetSignatureForError ());
2520 if ((flags & Modifiers.PRIVATE) != 0){
2521 if ((flags & vao) != 0){
2522 Report.Error (621, mc.Location, "`{0}': virtual or abstract members cannot be private", mc.GetSignatureForError ());
2527 if ((flags & Modifiers.SEALED) != 0){
2528 if ((flags & Modifiers.OVERRIDE) == 0){
2529 Report.Error (238, mc.Location, "`{0}' cannot be sealed because it is not an override", mc.GetSignatureForError ());
2537 public Constructor DefaultStaticConstructor {
2538 get { return default_static_constructor; }
2541 protected override bool VerifyClsCompliance ()
2543 if (!base.VerifyClsCompliance ())
2548 Type base_type = TypeBuilder.BaseType;
2549 if (base_type != null && !AttributeTester.IsClsCompliant (base_type)) {
2550 Report.Error (3009, Location, "`{0}': base type `{1}' is not CLS-compliant", GetSignatureForError (), TypeManager.CSharpName (base_type));
2553 if (!Parent.IsClsComplianceRequired ()) {
2554 Report.Error (3018, Location, "`{0}' cannot be marked as CLS-compliant because it is a member of non CLS-compliant type `{1}'",
2555 GetSignatureForError (), Parent.GetSignatureForError ());
2562 /// Checks whether container name is CLS Compliant
2564 void VerifyClsName ()
2566 Hashtable base_members = base_cache == null ?
2568 base_cache.GetPublicMembers ();
2569 Hashtable this_members = new Hashtable ();
2571 foreach (DictionaryEntry entry in defined_names) {
2572 MemberCore mc = (MemberCore)entry.Value;
2573 if (!mc.IsClsComplianceRequired ())
2576 string name = (string) entry.Key;
2577 string basename = name.Substring (name.LastIndexOf ('.') + 1);
2579 string lcase = basename.ToLower (System.Globalization.CultureInfo.InvariantCulture);
2580 object found = base_members [lcase];
2581 if (found == null) {
2582 found = this_members [lcase];
2583 if (found == null) {
2584 this_members.Add (lcase, mc);
2589 if ((mc.ModFlags & Modifiers.OVERRIDE) != 0)
2592 if (found is MemberInfo) {
2593 if (basename == ((MemberInfo) found).Name)
2595 Report.SymbolRelatedToPreviousError ((MemberInfo) found);
2597 Report.SymbolRelatedToPreviousError ((MemberCore) found);
2600 Report.Warning (3005, 1, mc.Location, "Identifier `{0}' differing only in case is not CLS-compliant", mc.GetSignatureForError ());
2602 Report.Error (3005, mc.Location, "Identifier `{0}' differing only in case is not CLS-compliant", mc.GetSignatureForError ());
2609 /// Performs checks for an explicit interface implementation. First it
2610 /// checks whether the `interface_type' is a base inteface implementation.
2611 /// Then it checks whether `name' exists in the interface type.
2613 public virtual bool VerifyImplements (MemberBase mb)
2615 if (ifaces != null) {
2616 foreach (Type t in ifaces){
2617 if (t == mb.InterfaceType)
2622 Report.SymbolRelatedToPreviousError (mb.InterfaceType);
2623 Report.Error (540, mb.Location, "`{0}': containing type does not implement interface `{1}'",
2624 mb.GetSignatureForError (), TypeManager.CSharpName (mb.InterfaceType));
2628 public void Mark_HasEquals ()
2630 Methods.HasEquals = true;
2633 public void Mark_HasGetHashCode ()
2635 Methods.HasGetHashCode = true;
2642 string IMemberContainer.Name {
2648 Type IMemberContainer.Type {
2654 MemberCache IMemberContainer.MemberCache {
2656 return member_cache;
2660 bool IMemberContainer.IsInterface {
2662 return Kind == Kind.Interface;
2666 MemberList IMemberContainer.GetMembers (MemberTypes mt, BindingFlags bf)
2668 BindingFlags new_bf = bf | BindingFlags.DeclaredOnly;
2670 if (GenericType != null)
2671 return TypeManager.FindMembers (GenericType, mt, new_bf,
2674 return FindMembers (mt, new_bf, null, null);
2678 // Generates xml doc comments (if any), and if required,
2679 // handle warning report.
2681 internal override void GenerateDocComment (DeclSpace ds)
2683 DocUtil.GenerateTypeDocComment (this, ds);
2686 public override string DocCommentHeader {
2687 get { return "T:"; }
2690 public virtual MemberCache BaseCache {
2692 if (base_cache != null)
2694 if (TypeBuilder.BaseType != null)
2695 base_cache = TypeManager.LookupMemberCache (TypeBuilder.BaseType);
2696 if (TypeBuilder.IsInterface)
2697 base_cache = TypeManager.LookupBaseInterfacesCache (TypeBuilder);
2703 public abstract class ClassOrStruct : TypeContainer {
2704 ListDictionary declarative_security;
2706 public ClassOrStruct (NamespaceEntry ns, DeclSpace parent,
2707 MemberName name, Attributes attrs, Kind kind)
2708 : base (ns, parent, name, attrs, kind)
2712 protected override bool AddToContainer (MemberCore symbol, string name)
2714 if (name == MemberName.Name) {
2715 if (symbol is TypeParameter) {
2716 Report.Error (694, symbol.Location,
2717 "Type parameter `{0}' has same name as " +
2718 "containing type, or method", name);
2722 Report.SymbolRelatedToPreviousError (this);
2723 Report.Error (542, symbol.Location, "`{0}': member names cannot be the same as their enclosing type",
2724 symbol.GetSignatureForError ());
2728 return base.AddToContainer (symbol, name);
2731 public override void VerifyMembers ()
2733 base.VerifyMembers ();
2735 if ((events != null) && (RootContext.WarningLevel >= 3)) {
2736 foreach (Event e in events){
2737 if ((e.ModFlags & Modifiers.Accessibility) != Modifiers.PRIVATE)
2740 if ((e.caching_flags & Flags.IsUsed) == 0)
2741 Report.Warning (67, 3, e.Location, "The event `{0}' is never used", e.GetSignatureForError ());
2746 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
2748 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
2749 if (declarative_security == null)
2750 declarative_security = new ListDictionary ();
2752 a.ExtractSecurityPermissionSet (declarative_security);
2756 if (a.Type == TypeManager.struct_layout_attribute_type && a.GetLayoutKindValue () == LayoutKind.Explicit) {
2757 HasExplicitLayout = true;
2760 base.ApplyAttributeBuilder (a, cb);
2764 /// Defines the default constructors
2766 protected void DefineDefaultConstructor (bool is_static)
2768 // The default instance constructor is public
2769 // If the class is abstract, the default constructor is protected
2770 // The default static constructor is private
2774 mods = Modifiers.STATIC | Modifiers.PRIVATE;
2776 mods = ((ModFlags & Modifiers.ABSTRACT) != 0) ? Modifiers.PROTECTED : Modifiers.PUBLIC;
2779 Constructor c = new Constructor (this, MemberName.Name, mods,
2780 Parameters.EmptyReadOnlyParameters,
2781 new GeneratedBaseInitializer (Location),
2785 c.Block = new ToplevelBlock (null, Location);
2788 void DefineFieldInitializers ()
2790 if (initialized_fields != null) {
2791 for (int i = 0; i < initialized_fields.Count; ++i) {
2792 FieldBase fb = (FieldBase)initialized_fields[i];
2793 fb.ResolveInitializer ();
2794 if (fb.HasDefaultInitializer && RootContext.Optimize) {
2795 // Field is re-initialized to its default value => removed
2796 initialized_fields.RemoveAt (i);
2802 if (initialized_static_fields != null) {
2803 bool has_complex_initializer = false;
2805 foreach (FieldBase fb in initialized_static_fields) {
2806 if (fb.ResolveInitializer () is Constant)
2809 has_complex_initializer = true;
2812 // Need special check to not optimize code like this
2813 // static int a = b = 5;
2814 // static int b = 0;
2815 if (!has_complex_initializer && RootContext.Optimize) {
2816 for (int i = 0; i < initialized_static_fields.Count; ++i) {
2817 FieldBase fb = (FieldBase)initialized_static_fields[i];
2818 if (fb.HasDefaultInitializer) {
2819 initialized_static_fields.RemoveAt (i);
2825 if (default_static_constructor == null && initialized_static_fields.Count > 0) {
2826 DefineDefaultConstructor (true);
2832 public override bool Define ()
2834 DefineFieldInitializers ();
2836 if (default_static_constructor != null)
2837 default_static_constructor.Define ();
2839 return base.Define ();
2842 public override void Emit ()
2846 if (declarative_security != null) {
2847 foreach (DictionaryEntry de in declarative_security) {
2848 TypeBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
2853 protected override TypeAttributes TypeAttr {
2855 if (default_static_constructor == null)
2856 return base.TypeAttr | TypeAttributes.BeforeFieldInit;
2858 return base.TypeAttr;
2864 // TODO: should be sealed
2865 public class Class : ClassOrStruct {
2866 const int AllowedModifiers =
2869 Modifiers.PROTECTED |
2870 Modifiers.INTERNAL |
2872 Modifiers.ABSTRACT |
2877 public Class (NamespaceEntry ns, DeclSpace parent, MemberName name, int mod,
2879 : base (ns, parent, name, attrs, Kind.Class)
2881 int accmods = Parent.Parent == null ? Modifiers.INTERNAL : Modifiers.PRIVATE;
2882 this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, Location);
2884 if (IsStatic && RootContext.Version == LanguageVersion.ISO_1) {
2885 Report.FeatureIsNotStandardized (Location, "static classes");
2889 public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
2891 if (a.Type == TypeManager.attribute_usage_type) {
2892 if (BaseType != TypeManager.attribute_type && !BaseType.IsSubclassOf (TypeManager.attribute_type) &&
2893 TypeBuilder.FullName != "System.Attribute") {
2894 Report.Error (641, a.Location, "Attribute `{0}' is only valid on classes derived from System.Attribute", a.GetSignatureForError ());
2898 if (a.Type == TypeManager.conditional_attribute_type &&
2899 !(BaseType == TypeManager.attribute_type || BaseType.IsSubclassOf (TypeManager.attribute_type))) {
2900 Report.Error (1689, a.Location, "Attribute `System.Diagnostics.ConditionalAttribute' is only valid on methods or attribute classes");
2904 if (a.Type == TypeManager.comimport_attr_type &&
2905 !attributes.Contains (TypeManager.guid_attr_type)) {
2906 a.Error_MissingGuidAttribute ();
2910 if (AttributeTester.IsAttributeExcluded (a.Type))
2913 base.ApplyAttributeBuilder (a, cb);
2916 public override AttributeTargets AttributeTargets {
2918 return AttributeTargets.Class;
2922 protected override void DefineContainerMembers (MemberCoreArrayList list)
2928 base.DefineContainerMembers (list);
2932 foreach (MemberCore m in list) {
2933 if (m is Operator) {
2934 Report.Error (715, m.Location, "`{0}': Static classes cannot contain user-defined operators", m.GetSignatureForError ());
2938 if (m is Destructor) {
2939 Report.Error (711, m.Location, "`{0}': Static classes cannot contain destructor", GetSignatureForError ());
2943 if ((m.ModFlags & Modifiers.PROTECTED) != 0) {
2944 Report.Error (1057, m.Location, "`{0}': Static classes cannot contain protected members", m.GetSignatureForError ());
2949 Report.Error (720, m.Location, "`{0}': cannot declare indexers in a static class", m.GetSignatureForError ());
2953 if ((m.ModFlags & Modifiers.STATIC) != 0 || m is Enum || m is Delegate)
2956 if (m is Constructor) {
2957 Report.Error (710, m.Location, "`{0}': Static classes cannot have instance constructors", GetSignatureForError ());
2961 Report.Error (708, m.Location, "`{0}': cannot declare instance members in a static class", m.GetSignatureForError ());
2964 base.DefineContainerMembers (list);
2967 public override TypeBuilder DefineType ()
2969 if ((ModFlags & Modifiers.ABSTRACT) == Modifiers.ABSTRACT && (ModFlags & (Modifiers.SEALED | Modifiers.STATIC)) != 0) {
2970 Report.Error (418, Location, "`{0}': an abstract class cannot be sealed or static", GetSignatureForError ());
2974 if ((ModFlags & (Modifiers.SEALED | Modifiers.STATIC)) == (Modifiers.SEALED | Modifiers.STATIC)) {
2975 Report.Error (441, Location, "`{0}': a class cannot be both static and sealed", GetSignatureForError ());
2979 return base.DefineType ();
2982 protected override bool DoDefineMembers ()
2984 if (InstanceConstructors == null && !IsStatic)
2985 DefineDefaultConstructor (false);
2987 return base.DoDefineMembers ();
2990 public override TypeExpr[] GetClassBases (out TypeExpr base_class)
2992 TypeExpr[] ifaces = base.GetClassBases (out base_class);
2994 if (base_class == null) {
2995 if (RootContext.StdLib)
2996 base_class = TypeManager.system_object_expr;
2997 else if (Name != "System.Object")
2998 base_class = TypeManager.system_object_expr;
3000 if (Kind == Kind.Class && base_class is TypeParameterExpr){
3002 689, base_class.Location,
3003 "Cannot derive from `{0}' because it is a type parameter",
3004 base_class.GetSignatureForError ());
3008 if (base_class.Type.IsArray || base_class.Type.IsPointer) {
3009 Report.Error (1521, base_class.Location, "Invalid base type");
3013 if (base_class.IsSealed){
3014 Report.SymbolRelatedToPreviousError (base_class.Type);
3015 if (base_class.Type.IsAbstract) {
3016 Report.Error (709, Location, "`{0}': Cannot derive from static class `{1}'",
3017 GetSignatureForError (), TypeManager.CSharpName (base_class.Type));
3019 Report.Error (509, Location, "`{0}': cannot derive from sealed class `{1}'",
3020 GetSignatureForError (), TypeManager.CSharpName (base_class.Type));
3025 if (!base_class.CanInheritFrom ()){
3026 Report.Error (644, Location, "`{0}' cannot derive from special class `{1}'",
3027 GetSignatureForError (), base_class.GetSignatureForError ());
3031 if (!base_class.AsAccessible (this, ModFlags)) {
3032 Report.SymbolRelatedToPreviousError (base_class.Type);
3033 Report.Error (60, Location, "Inconsistent accessibility: base class `{0}' is less accessible than class `{1}'",
3034 TypeManager.CSharpName (base_class.Type), GetSignatureForError ());
3039 if (base_class != TypeManager.system_object_expr) {
3040 Report.Error (713, Location, "Static class `{0}' cannot derive from type `{1}'. Static classes must derive from object",
3041 GetSignatureForError (), base_class.GetSignatureForError ());
3045 if (ifaces != null) {
3046 foreach (TypeExpr t in ifaces)
3047 Report.SymbolRelatedToPreviousError (t.Type);
3048 Report.Error (714, Location, "`{0}': static classes cannot implement interfaces", GetSignatureForError ());
3055 /// Search for at least one defined condition in ConditionalAttribute of attribute class
3056 /// Valid only for attribute classes.
3057 public bool IsExcluded ()
3059 if ((caching_flags & Flags.Excluded_Undetected) == 0)
3060 return (caching_flags & Flags.Excluded) != 0;
3062 caching_flags &= ~Flags.Excluded_Undetected;
3064 if (OptAttributes == null)
3067 Attribute[] attrs = OptAttributes.SearchMulti (TypeManager.conditional_attribute_type);
3072 foreach (Attribute a in attrs) {
3073 string condition = a.GetConditionalAttributeValue ();
3074 if (RootContext.AllDefines.Contains (condition))
3078 caching_flags |= Flags.Excluded;
3084 return (ModFlags & Modifiers.STATIC) != 0;
3089 // FIXME: How do we deal with the user specifying a different
3092 protected override TypeAttributes TypeAttr {
3094 TypeAttributes ta = base.TypeAttr | TypeAttributes.AutoLayout | TypeAttributes.Class;
3096 ta |= TypeAttributes.Abstract | TypeAttributes.Sealed;
3102 public sealed class Struct : ClassOrStruct {
3104 // Modifiers allowed in a struct declaration
3106 const int AllowedModifiers =
3109 Modifiers.PROTECTED |
3110 Modifiers.INTERNAL |
3114 public Struct (NamespaceEntry ns, DeclSpace parent, MemberName name,
3115 int mod, Attributes attrs)
3116 : base (ns, parent, name, attrs, Kind.Struct)
3120 if (parent.Parent == null)
3121 accmods = Modifiers.INTERNAL;
3123 accmods = Modifiers.PRIVATE;
3125 this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, Location);
3127 this.ModFlags |= Modifiers.SEALED;
3130 public override AttributeTargets AttributeTargets {
3132 return AttributeTargets.Struct;
3136 const TypeAttributes DefaultTypeAttributes =
3137 TypeAttributes.SequentialLayout |
3138 TypeAttributes.Sealed |
3139 TypeAttributes.BeforeFieldInit;
3142 public override TypeExpr[] GetClassBases (out TypeExpr base_class)
3144 TypeExpr[] ifaces = base.GetClassBases (out base_class);
3146 // If we are compiling our runtime,
3147 // and we are defining ValueType, then our
3148 // base is `System.Object'.
3150 if (base_class == null) {
3151 if (!RootContext.StdLib && Name == "System.ValueType")
3152 base_class = TypeManager.system_object_expr;
3154 base_class = TypeManager.system_valuetype_expr;
3161 // FIXME: Allow the user to specify a different set of attributes
3162 // in some cases (Sealed for example is mandatory for a class,
3163 // but what SequentialLayout can be changed
3165 protected override TypeAttributes TypeAttr {
3167 return base.TypeAttr | DefaultTypeAttributes;
3171 public override void RegisterFieldForInitialization (FieldBase field)
3173 if ((field.ModFlags & Modifiers.STATIC) == 0) {
3174 Report.Error (573, field.Location, "`{0}': Structs cannot have instance field initializers",
3175 field.GetSignatureForError ());
3178 base.RegisterFieldForInitialization (field);
3186 public sealed class Interface : TypeContainer, IMemberContainer {
3189 /// Modifiers allowed in a class declaration
3191 public const int AllowedModifiers =
3194 Modifiers.PROTECTED |
3195 Modifiers.INTERNAL |
3199 public Interface (NamespaceEntry ns, DeclSpace parent, MemberName name, int mod,
3201 : base (ns, parent, name, attrs, Kind.Interface)
3205 if (parent.Parent == null)
3206 accmods = Modifiers.INTERNAL;
3208 accmods = Modifiers.PRIVATE;
3210 this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, name.Location);
3213 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
3215 if (a.Type == TypeManager.comimport_attr_type &&
3216 !attributes.Contains (TypeManager.guid_attr_type)) {
3217 a.Error_MissingGuidAttribute ();
3220 base.ApplyAttributeBuilder (a, cb);
3224 public override AttributeTargets AttributeTargets {
3226 return AttributeTargets.Interface;
3230 const TypeAttributes DefaultTypeAttributes =
3231 TypeAttributes.AutoLayout |
3232 TypeAttributes.Abstract |
3233 TypeAttributes.Interface;
3235 protected override TypeAttributes TypeAttr {
3237 return base.TypeAttr | DefaultTypeAttributes;
3241 protected override bool VerifyClsCompliance ()
3243 if (!base.VerifyClsCompliance ())
3246 if (ifaces != null) {
3247 foreach (Type t in ifaces) {
3248 if (AttributeTester.IsClsCompliant (t))
3251 Report.SymbolRelatedToPreviousError (t);
3252 Report.Warning (3027, 1, Location, "`{0}' is not CLS-compliant because base interface `{1}' is not CLS-compliant",
3253 GetSignatureForError (), TypeManager.CSharpName (t));
3261 public abstract class MethodCore : MemberBase {
3262 public readonly Parameters Parameters;
3263 protected ToplevelBlock block;
3266 // The method we're overriding if this is an override method.
3268 protected MethodInfo base_method = null;
3270 public MethodCore (DeclSpace parent, GenericMethod generic,
3271 Expression type, int mod, int allowed_mod, bool is_iface,
3272 MemberName name, Attributes attrs, Parameters parameters)
3273 : base (parent, generic, type, mod, allowed_mod, Modifiers.PRIVATE,
3276 Parameters = parameters;
3277 IsInterface = is_iface;
3281 // Returns the System.Type array for the parameters of this method
3283 public Type [] ParameterTypes {
3285 return Parameters.Types;
3289 public Parameters ParameterInfo
3296 public ToplevelBlock Block {
3306 public virtual void SetYields ()
3308 ModFlags |= Modifiers.METHOD_YIELDS;
3311 protected override bool CheckBase ()
3313 if (!base.CheckBase ())
3316 // Check whether arguments were correct.
3317 if (!DoDefineParameters ())
3320 if ((caching_flags & Flags.TestMethodDuplication) != 0 && !CheckForDuplications ())
3326 // Is null for System.Object while compiling corlib and base interfaces
3327 if (Parent.PartialContainer.BaseCache == null) {
3328 if ((RootContext.WarningLevel >= 4) && ((ModFlags & Modifiers.NEW) != 0)) {
3329 Report.Warning (109, 4, Location, "The member `{0}' does not hide an inherited member. The new keyword is not required", GetSignatureForError ());
3334 Type base_ret_type = null;
3335 base_method = FindOutBaseMethod (ref base_ret_type);
3337 // method is override
3338 if (base_method != null) {
3340 if (!CheckMethodAgainstBase ())
3343 if ((ModFlags & Modifiers.NEW) == 0) {
3344 if (!TypeManager.IsEqual (MemberType, TypeManager.TypeToCoreType (base_ret_type))) {
3345 Report.SymbolRelatedToPreviousError (base_method);
3346 if (this is PropertyBase) {
3347 Report.Error (1715, Location, "`{0}': type must be `{1}' to match overridden member `{2}'",
3348 GetSignatureForError (), TypeManager.CSharpName (base_ret_type), TypeManager.CSharpSignature (base_method));
3351 Report.Error (508, Location, "`{0}': return type must be `{1}' to match overridden member `{2}'",
3352 GetSignatureForError (), TypeManager.CSharpName (base_ret_type), TypeManager.CSharpSignature (base_method));
3357 if (base_method.IsAbstract && !IsInterface) {
3358 Report.SymbolRelatedToPreviousError (base_method);
3359 Report.Error (533, Location, "`{0}' hides inherited abstract member `{1}'",
3360 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3365 if (base_method.IsSpecialName && !(this is PropertyBase)) {
3366 Report.Error (115, Location, "`{0}': no suitable method found to override", GetSignatureForError ());
3370 if (Name == "Equals" && Parameters.Count == 1 && ParameterTypes [0] == TypeManager.object_type)
3371 Parent.PartialContainer.Mark_HasEquals ();
3372 else if (Name == "GetHashCode" && Parameters.Empty)
3373 Parent.PartialContainer.Mark_HasGetHashCode ();
3375 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
3376 ObsoleteAttribute oa = AttributeTester.GetMethodObsoleteAttribute (base_method);
3378 if (OptAttributes == null || !OptAttributes.Contains (TypeManager.obsolete_attribute_type)) {
3379 Report.SymbolRelatedToPreviousError (base_method);
3380 Report.Warning (672, 1, Location, "Member `{0}' overrides obsolete member `{1}'. Add the Obsolete attribute to `{0}'",
3381 GetSignatureForError (), TypeManager.CSharpSignature (base_method) );
3388 MemberInfo conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Name, !(this is Property));
3389 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
3390 if (conflict_symbol != null) {
3391 Report.SymbolRelatedToPreviousError (conflict_symbol);
3392 if (this is PropertyBase)
3393 Report.Error (544, Location, "`{0}': cannot override because `{1}' is not a property", GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
3395 Report.Error (505, Location, "`{0}': cannot override because `{1}' is not a method", GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
3397 Report.Error (115, Location, "`{0}': no suitable method found to override", GetSignatureForError ());
3401 if (conflict_symbol == null) {
3402 if ((RootContext.WarningLevel >= 4) && ((ModFlags & Modifiers.NEW) != 0)) {
3403 Report.Warning (109, 4, Location, "The member `{0}' does not hide an inherited member. The new keyword is not required", GetSignatureForError ());
3408 if ((ModFlags & Modifiers.NEW) == 0) {
3409 if (this is Method && conflict_symbol is MethodBase)
3412 Report.SymbolRelatedToPreviousError (conflict_symbol);
3413 Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
3414 GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
3421 // Performs various checks on the MethodInfo `mb' regarding the modifier flags
3422 // that have been defined.
3424 // `name' is the user visible name for reporting errors (this is used to
3425 // provide the right name regarding method names and properties)
3427 bool CheckMethodAgainstBase ()
3431 if ((ModFlags & Modifiers.OVERRIDE) != 0){
3432 if (!(base_method.IsAbstract || base_method.IsVirtual)){
3433 Report.Error (506, Location,
3434 "`{0}': cannot override inherited member `{1}' because it is not marked virtual, abstract or override",
3435 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3439 // Now we check that the overriden method is not final
3441 if (base_method.IsFinal) {
3442 Report.SymbolRelatedToPreviousError (base_method);
3443 Report.Error (239, Location, "`{0}': cannot override inherited member `{1}' because it is sealed",
3444 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3448 // Check that the permissions are not being changed
3450 MethodAttributes thisp = flags & MethodAttributes.MemberAccessMask;
3451 MethodAttributes base_classp = base_method.Attributes & MethodAttributes.MemberAccessMask;
3453 if (!CheckAccessModifiers (thisp, base_classp, base_method)) {
3454 Error_CannotChangeAccessModifiers (base_method, base_classp, null);
3459 if ((ModFlags & (Modifiers.NEW | Modifiers.OVERRIDE)) == 0 && Name != "Finalize") {
3460 ModFlags |= Modifiers.NEW;
3461 Report.SymbolRelatedToPreviousError (base_method);
3462 if (!IsInterface && (base_method.IsVirtual || base_method.IsAbstract)) {
3463 Report.Warning (114, 2, Location, "`{0}' hides inherited member `{1}'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword",
3464 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3466 Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
3467 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3474 protected bool CheckAccessModifiers (MethodAttributes thisp, MethodAttributes base_classp, MethodInfo base_method)
3476 if ((base_classp & MethodAttributes.FamORAssem) == MethodAttributes.FamORAssem){
3478 // when overriding protected internal, the method can be declared
3479 // protected internal only within the same assembly
3482 if ((thisp & MethodAttributes.FamORAssem) == MethodAttributes.FamORAssem){
3483 if (Parent.TypeBuilder.Assembly != base_method.DeclaringType.Assembly){
3485 // assemblies differ - report an error
3489 } else if (thisp != base_classp) {
3491 // same assembly, but other attributes differ - report an error
3496 } else if ((thisp & MethodAttributes.Family) != MethodAttributes.Family) {
3498 // if it's not "protected internal", it must be "protected"
3502 } else if (Parent.TypeBuilder.Assembly == base_method.DeclaringType.Assembly) {
3504 // protected within the same assembly - an error
3507 } else if ((thisp & ~(MethodAttributes.Family | MethodAttributes.FamORAssem)) !=
3508 (base_classp & ~(MethodAttributes.Family | MethodAttributes.FamORAssem))) {
3510 // protected ok, but other attributes differ - report an error
3516 return (thisp == base_classp);
3520 public bool CheckAbstractAndExtern (bool has_block)
3522 if (Parent.PartialContainer.Kind == Kind.Interface)
3526 if ((ModFlags & Modifiers.EXTERN) != 0) {
3527 Report.Error (179, Location, "`{0}' cannot declare a body because it is marked extern",
3528 GetSignatureForError ());
3532 if ((ModFlags & Modifiers.ABSTRACT) != 0) {
3533 Report.Error (500, Location, "`{0}' cannot declare a body because it is marked abstract",
3534 GetSignatureForError ());
3538 if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0) {
3539 Report.Error (501, Location, "`{0}' must declare a body because it is not marked abstract or extern",
3540 GetSignatureForError ());
3548 protected void Error_CannotChangeAccessModifiers (MemberInfo base_method, MethodAttributes ma, string suffix)
3550 Report.SymbolRelatedToPreviousError (base_method);
3551 string base_name = TypeManager.GetFullNameSignature (base_method);
3552 string this_name = GetSignatureForError ();
3553 if (suffix != null) {
3554 base_name += suffix;
3555 this_name += suffix;
3558 Report.Error (507, Location, "`{0}': cannot change access modifiers when overriding `{1}' inherited member `{2}'",
3559 this_name, Modifiers.GetDescription (ma), base_name);
3562 protected static string Error722 {
3564 return "`{0}': static types cannot be used as return types";
3569 /// For custom member duplication search in a container
3571 protected abstract bool CheckForDuplications ();
3574 /// Gets base method and its return type
3576 protected abstract MethodInfo FindOutBaseMethod (ref Type base_ret_type);
3578 protected bool DoDefineParameters ()
3580 IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
3582 // Check if arguments were correct
3583 if (!Parameters.Resolve (rc))
3586 return CheckParameters (ParameterTypes);
3589 bool CheckParameters (Type [] parameters)
3593 foreach (Type partype in parameters){
3594 if (partype == TypeManager.void_type) {
3595 // TODO: location is wrong
3596 Expression.Error_VoidInvalidInTheContext (Location);
3600 if (partype.IsPointer){
3601 if (!TypeManager.VerifyUnManaged (TypeManager.GetElementType (partype), Location))
3605 if (ds.AsAccessible (partype, ModFlags))
3608 Report.SymbolRelatedToPreviousError (partype);
3609 if (this is Indexer)
3610 Report.Error (55, Location,
3611 "Inconsistent accessibility: parameter type `" +
3612 TypeManager.CSharpName (partype) + "' is less " +
3613 "accessible than indexer `" + GetSignatureForError () + "'");
3614 else if (this is Operator)
3615 Report.Error (57, Location,
3616 "Inconsistent accessibility: parameter type `" +
3617 TypeManager.CSharpName (partype) + "' is less " +
3618 "accessible than operator `" + GetSignatureForError () + "'");
3620 Report.Error (51, Location,
3621 "Inconsistent accessibility: parameter type `" +
3622 TypeManager.CSharpName (partype) + "' is less " +
3623 "accessible than method `" + GetSignatureForError () + "'");
3630 protected override bool VerifyClsCompliance ()
3632 if (!base.VerifyClsCompliance ()) {
3633 if ((ModFlags & Modifiers.ABSTRACT) != 0 && Parent.TypeBuilder.IsClass && IsExposedFromAssembly () && Parent.IsClsComplianceRequired ()) {
3634 Report.Error (3011, Location, "`{0}': only CLS-compliant members can be abstract", GetSignatureForError ());
3639 if (Parameters.HasArglist) {
3640 Report.Error (3000, Location, "Methods with variable arguments are not CLS-compliant");
3643 if (!AttributeTester.IsClsCompliant (MemberType)) {
3644 if (this is PropertyBase)
3645 Report.Error (3003, Location, "Type of `{0}' is not CLS-compliant",
3646 GetSignatureForError ());
3648 Report.Error (3002, Location, "Return type of `{0}' is not CLS-compliant",
3649 GetSignatureForError ());
3652 Parameters.VerifyClsCompliance ();
3657 protected bool IsDuplicateImplementation (MethodCore method)
3659 if (method == this || !(method.MemberName.Equals (MemberName)))
3662 Type[] param_types = method.ParameterTypes;
3663 // This never happen. Rewrite this as Equal
3664 if (param_types == null && ParameterTypes == null)
3666 if (param_types == null || ParameterTypes == null)
3669 if (param_types.Length != ParameterTypes.Length)
3672 if (method.Parameters.HasArglist != Parameters.HasArglist)
3677 for (int i = 0; i < param_types.Length; i++) {
3678 if (param_types [i] != ParameterTypes [i])
3682 if (IsExplicitImpl && (method.InterfaceType != InterfaceType))
3685 // TODO: make operator compatible with MethodCore to avoid this
3686 if (this is Operator && method is Operator) {
3687 if (MemberType != method.MemberType)
3693 // Try to report 663: method only differs on out/ref
3695 Parameters info = ParameterInfo;
3696 Parameters other_info = method.ParameterInfo;
3697 for (int i = 0; i < info.Count; i++){
3699 if (info.ParameterModifier (i) != other_info.ParameterModifier (i)){
3700 Report.SymbolRelatedToPreviousError (method);
3701 Report.Error (663, Location, "`{0}': Methods cannot differ only on their use of ref and out on a parameters",
3702 GetSignatureForError ());
3705 Console.WriteLine ("Method is: {0} {1}", method.Location, method);
3706 Console.WriteLine ("this is: {0} {1}", Location, this);
3710 Report.SymbolRelatedToPreviousError (method);
3711 if (this is Operator && method is Operator)
3712 Report.Error (557, Location, "Duplicate user-defined conversion in type `{0}'", Parent.Name);
3714 Report.Error (111, Location, TypeContainer.Error111, GetSignatureForError ());
3722 public override bool IsUsed {
3723 get { return IsExplicitImpl || base.IsUsed; }
3727 // Returns a string that represents the signature for this
3728 // member which should be used in XML documentation.
3730 public override string GetDocCommentName (DeclSpace ds)
3732 return DocUtil.GetMethodDocCommentName (this, ds);
3736 // Raised (and passed an XmlElement that contains the comment)
3737 // when GenerateDocComment is writing documentation expectedly.
3739 // FIXME: with a few effort, it could be done with XmlReader,
3740 // that means removal of DOM use.
3742 internal override void OnGenerateDocComment (XmlElement el)
3744 DocUtil.OnMethodGenerateDocComment (this, el);
3748 // Represents header string for documentation comment.
3750 public override string DocCommentHeader {
3751 get { return "M:"; }
3756 public abstract class MethodOrOperator : MethodCore, IMethodData
3758 public MethodBuilder MethodBuilder;
3759 ReturnParameter return_attributes;
3760 ListDictionary declarative_security;
3761 protected MethodData MethodData;
3764 ArrayList anonymous_methods;
3766 static string[] attribute_targets = new string [] { "method", "return" };
3768 protected MethodOrOperator (DeclSpace parent, GenericMethod generic, Expression type, int mod,
3769 int allowed_mod, bool is_interface, MemberName name,
3770 Attributes attrs, Parameters parameters)
3771 : base (parent, generic, type, mod, allowed_mod, is_interface, name,
3776 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
3778 if (a.Target == AttributeTargets.ReturnValue) {
3779 if (return_attributes == null)
3780 return_attributes = new ReturnParameter (MethodBuilder, Location);
3782 return_attributes.ApplyAttributeBuilder (a, cb);
3786 if (a.Type == TypeManager.methodimpl_attr_type &&
3787 (a.GetMethodImplOptions () & MethodImplOptions.InternalCall) != 0) {
3788 MethodBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall | MethodImplAttributes.Runtime);
3791 if (a.Type == TypeManager.dllimport_type) {
3792 const int extern_static = Modifiers.EXTERN | Modifiers.STATIC;
3793 if ((ModFlags & extern_static) != extern_static) {
3794 Report.Error (601, a.Location, "The DllImport attribute must be specified on a method marked `static' and `extern'");
3800 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
3801 if (declarative_security == null)
3802 declarative_security = new ListDictionary ();
3803 a.ExtractSecurityPermissionSet (declarative_security);
3807 MethodBuilder.SetCustomAttribute (cb);
3810 public override AttributeTargets AttributeTargets {
3812 return AttributeTargets.Method;
3816 public virtual EmitContext CreateEmitContext (DeclSpace tc, ILGenerator ig)
3818 return new EmitContext (
3819 this, tc, this.ds, Location, ig, MemberType, ModFlags, false);
3822 public void AddAnonymousMethod (AnonymousMethodExpression anonymous)
3824 if (anonymous_methods == null)
3825 anonymous_methods = new ArrayList ();
3826 anonymous_methods.Add (anonymous);
3829 protected bool DefineGenericMethod ()
3831 if (!DoDefineBase ())
3835 if (GenericMethod != null) {
3836 string method_name = MemberName.Name;
3838 if (IsExplicitImpl) {
3839 method_name = TypeManager.CSharpName (InterfaceType) +
3843 MethodBuilder = Parent.TypeBuilder.DefineMethod (method_name, flags);
3845 if (!GenericMethod.Define (MethodBuilder, block))
3853 public bool ResolveMembers ()
3855 if (!DefineGenericMethod ())
3858 if ((ModFlags & Modifiers.METHOD_YIELDS) != 0) {
3859 iterator = Iterator.CreateIterator (
3860 this, Parent.PartialContainer, GenericMethod, ModFlags);
3862 if (iterator == null)
3866 if (anonymous_methods != null) {
3867 foreach (AnonymousMethodExpression ame in anonymous_methods) {
3868 if (!ame.CreateAnonymousHelpers ())
3876 public override bool Define ()
3881 if (!CheckAbstractAndExtern (block != null))
3887 MethodData = new MethodData (
3888 this, ModFlags, flags, this, MethodBuilder, GenericMethod, base_method);
3890 if (!MethodData.Define (Parent.PartialContainer))
3893 MethodBuilder = MethodData.MethodBuilder;
3895 if (MemberType.IsAbstract && MemberType.IsSealed) {
3896 Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
3903 public override void Emit ()
3905 if (OptAttributes != null)
3906 OptAttributes.Emit ();
3908 if (declarative_security != null) {
3909 foreach (DictionaryEntry de in declarative_security) {
3910 MethodBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
3917 protected void Error_ConditionalAttributeIsNotValid ()
3919 Report.Error (577, Location,
3920 "Conditional not valid on `{0}' because it is a constructor, destructor, operator or explicit interface implementation",
3921 GetSignatureForError ());
3924 public override bool MarkForDuplicationCheck ()
3926 caching_flags |= Flags.TestMethodDuplication;
3930 public override string[] ValidAttributeTargets {
3932 return attribute_targets;
3936 #region IMethodData Members
3938 public CallingConventions CallingConventions {
3940 CallingConventions cc = Parameters.CallingConvention;
3941 if (Parameters.HasArglist)
3942 block.HasVarargs = true;
3945 if ((ModFlags & Modifiers.STATIC) == 0)
3946 cc |= CallingConventions.HasThis;
3948 // FIXME: How is `ExplicitThis' used in C#?
3954 public Type ReturnType {
3960 public MemberName MethodName {
3966 public Iterator Iterator {
3967 get { return iterator; }
3970 public new Location Location {
3972 return base.Location;
3976 protected override bool CheckBase() {
3977 if (!base.CheckBase ())
3980 // TODO: Destructor should derive from MethodCore
3981 if (base_method != null && (ModFlags & Modifiers.OVERRIDE) != 0 && Name == "Finalize" &&
3982 base_method.DeclaringType == TypeManager.object_type && !(this is Destructor)) {
3983 Report.Error (249, Location, "Do not override object.Finalize. Instead, provide a destructor");
3991 /// Returns true if method has conditional attribute and the conditions is not defined (method is excluded).
3993 public bool IsExcluded () {
3994 if ((caching_flags & Flags.Excluded_Undetected) == 0)
3995 return (caching_flags & Flags.Excluded) != 0;
3997 caching_flags &= ~Flags.Excluded_Undetected;
3999 if (base_method == null) {
4000 if (OptAttributes == null)
4003 Attribute[] attrs = OptAttributes.SearchMulti (TypeManager.conditional_attribute_type);
4008 foreach (Attribute a in attrs) {
4009 string condition = a.GetConditionalAttributeValue ();
4010 if (condition == null)
4013 if (RootContext.AllDefines.Contains (condition))
4017 caching_flags |= Flags.Excluded;
4021 IMethodData md = TypeManager.GetMethod (base_method);
4023 if (AttributeTester.IsConditionalMethodExcluded (base_method)) {
4024 caching_flags |= Flags.Excluded;
4030 if (md.IsExcluded ()) {
4031 caching_flags |= Flags.Excluded;
4037 GenericMethod IMethodData.GenericMethod {
4039 return GenericMethod;
4047 public class SourceMethod : ISourceMethod
4052 protected SourceMethod (DeclSpace parent, MethodBase builder,
4053 ISourceFile file, Location start, Location end)
4055 this.parent = parent;
4056 this.builder = builder;
4058 CodeGen.SymbolWriter.OpenMethod (file, this, start.Row, start.Column, end.Row, start.Column);
4061 public string Name {
4062 get { return builder.Name; }
4065 public int NamespaceID {
4066 get { return parent.NamespaceEntry.SymbolFileID; }
4071 if (builder is MethodBuilder)
4072 return ((MethodBuilder) builder).GetToken ().Token;
4073 else if (builder is ConstructorBuilder)
4074 return ((ConstructorBuilder) builder).GetToken ().Token;
4076 throw new NotSupportedException ();
4080 public void CloseMethod ()
4082 if (CodeGen.SymbolWriter != null)
4083 CodeGen.SymbolWriter.CloseMethod ();
4086 public static SourceMethod Create (DeclSpace parent, MethodBase builder, Block block)
4088 if (CodeGen.SymbolWriter == null)
4093 Location start_loc = block.StartLocation;
4094 if (start_loc.IsNull)
4097 Location end_loc = block.EndLocation;
4101 ISourceFile file = start_loc.SourceFile;
4105 return new SourceMethod (
4106 parent, builder, file, start_loc, end_loc);
4110 public class Method : MethodOrOperator, IAnonymousHost {
4113 /// Modifiers allowed in a class declaration
4115 const int AllowedModifiers =
4118 Modifiers.PROTECTED |
4119 Modifiers.INTERNAL |
4124 Modifiers.OVERRIDE |
4125 Modifiers.ABSTRACT |
4127 Modifiers.METHOD_YIELDS |
4130 const int AllowedInterfaceModifiers =
4131 Modifiers.NEW | Modifiers.UNSAFE;
4134 // return_type can be "null" for VOID values.
4136 public Method (DeclSpace parent, GenericMethod generic,
4137 Expression return_type, int mod, bool is_iface,
4138 MemberName name, Parameters parameters, Attributes attrs)
4139 : base (parent, generic, return_type, mod,
4140 is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
4141 is_iface, name, attrs, parameters)
4145 public override string GetSignatureForError()
4147 return base.GetSignatureForError () + Parameters.GetSignatureForError ();
4150 void Error_DuplicateEntryPoint (MethodInfo b, Location location)
4152 Report.Error (17, location,
4153 "Program `{0}' has more than one entry point defined: `{1}'",
4154 CodeGen.FileName, TypeManager.CSharpSignature(b));
4157 bool IsEntryPoint (Parameters pinfo)
4159 if (ReturnType != TypeManager.void_type &&
4160 ReturnType != TypeManager.int32_type)
4163 if (pinfo.Count == 0)
4166 if (pinfo.Count > 1)
4169 Type t = pinfo.ParameterType (0);
4171 (t.GetArrayRank () == 1) &&
4172 (TypeManager.GetElementType (t) == TypeManager.string_type) &&
4173 (pinfo.ParameterModifier (0) == Parameter.Modifier.NONE))
4179 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
4181 if (a.Type == TypeManager.conditional_attribute_type) {
4182 if (IsExplicitImpl) {
4183 Error_ConditionalAttributeIsNotValid ();
4187 if (ReturnType != TypeManager.void_type) {
4188 Report.Error (578, Location, "Conditional not valid on `{0}' because its return type is not void", GetSignatureForError ());
4192 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
4193 Report.Error (243, Location, "Conditional not valid on `{0}' because it is an override method", GetSignatureForError ());
4198 Report.Error (582, Location, "Conditional not valid on interface members");
4202 if (MethodData.implementing != null) {
4203 Report.Error (629, Location, "Conditional member `{0}' cannot implement interface member `{1}'",
4204 GetSignatureForError (), TypeManager.CSharpSignature (MethodData.implementing));
4208 for (int i = 0; i < ParameterInfo.Count; ++i) {
4209 if ((ParameterInfo.ParameterModifier (i) & Parameter.Modifier.OUTMASK) != 0) {
4210 Report.Error (685, Location, "Conditional method `{0}' cannot have an out parameter", GetSignatureForError ());
4216 base.ApplyAttributeBuilder (a, cb);
4219 protected override bool CheckForDuplications ()
4221 ArrayList ar = Parent.PartialContainer.Methods;
4223 int arLen = ar.Count;
4225 for (int i = 0; i < arLen; i++) {
4226 Method m = (Method) ar [i];
4227 if (IsDuplicateImplementation (m))
4232 ar = Parent.PartialContainer.Properties;
4234 for (int i = 0; i < ar.Count; ++i) {
4235 PropertyBase pb = (PropertyBase) ar [i];
4236 if (pb.AreAccessorsDuplicateImplementation (this))
4241 ar = Parent.PartialContainer.Indexers;
4243 for (int i = 0; i < ar.Count; ++i) {
4244 PropertyBase pb = (PropertyBase) ar [i];
4245 if (pb.AreAccessorsDuplicateImplementation (this))
4250 ar = Parent.PartialContainer.Events;
4252 for (int i = 0; i < ar.Count; ++i) {
4253 Event ev = (Event) ar [i];
4254 if (ev.AreAccessorsDuplicateImplementation (this))
4265 public override bool Define ()
4267 if (!base.Define ())
4270 if (RootContext.StdLib && (ReturnType == TypeManager.arg_iterator_type || ReturnType == TypeManager.typed_reference_type)) {
4271 Error1599 (Location, ReturnType);
4275 if (ReturnType == TypeManager.void_type && ParameterTypes.Length == 0 &&
4276 Name == "Finalize" && !(this is Destructor)) {
4277 Report.Warning (465, 1, Location, "Introducing a 'Finalize' method can interfere with destructor invocation. Did you intend to declare a destructor?");
4281 // This is used to track the Entry Point,
4283 if (RootContext.NeedsEntryPoint && ((ModFlags & Modifiers.STATIC) != 0) &&
4285 (RootContext.MainClass == null ||
4286 RootContext.MainClass == Parent.TypeBuilder.FullName)){
4287 if (IsEntryPoint (ParameterInfo)) {
4289 if (RootContext.EntryPoint == null) {
4290 if (Parent.IsGeneric || MemberName.IsGeneric) {
4291 Report.Warning (402, 4, Location, "`{0}': an entry point cannot be generic or in a generic type",
4292 GetSignatureForError ());
4294 IMethodData md = TypeManager.GetMethod (MethodBuilder);
4295 md.SetMemberIsUsed ();
4297 RootContext.EntryPoint = MethodBuilder;
4298 RootContext.EntryPointLocation = Location;
4301 Error_DuplicateEntryPoint (RootContext.EntryPoint, RootContext.EntryPointLocation);
4302 Error_DuplicateEntryPoint (MethodBuilder, Location);
4305 Report.Warning (28, 4, Location, "`{0}' has the wrong signature to be an entry point",
4306 GetSignatureForError ());
4316 public override void Emit ()
4318 Report.Debug (64, "METHOD EMIT", this, MethodBuilder, Location, Block, MethodData);
4319 MethodData.Emit (Parent);
4326 public static void Error1599 (Location loc, Type t)
4328 Report.Error (1599, loc, "Method or delegate cannot return type `{0}'", TypeManager.CSharpName (t));
4331 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
4333 MethodInfo mi = (MethodInfo) Parent.PartialContainer.BaseCache.FindMemberToOverride (
4334 Parent.TypeBuilder, Name, ParameterTypes, GenericMethod, false);
4339 if (mi.IsSpecialName)
4342 base_ret_type = mi.ReturnType;
4346 protected override bool VerifyClsCompliance ()
4348 if (!base.VerifyClsCompliance ())
4351 if (ParameterInfo.Count > 0) {
4352 ArrayList al = (ArrayList)Parent.PartialContainer.MemberCache.Members [Name];
4354 MemberCache.VerifyClsParameterConflict (al, this, MethodBuilder);
4361 public abstract class ConstructorInitializer {
4362 ArrayList argument_list;
4363 protected ConstructorInfo base_constructor;
4366 public ConstructorInitializer (ArrayList argument_list, Location loc)
4368 this.argument_list = argument_list;
4372 public ArrayList Arguments {
4374 return argument_list;
4378 public bool Resolve (ConstructorBuilder caller_builder, Block block, EmitContext ec)
4380 Expression base_constructor_group;
4384 ec.CurrentBlock = block;
4386 if (argument_list != null){
4387 foreach (Argument a in argument_list){
4388 if (!a.Resolve (ec, loc))
4392 ec.CurrentBlock = null;
4394 if (this is ConstructorBaseInitializer) {
4395 if (ec.ContainerType.BaseType == null)
4398 t = ec.ContainerType.BaseType;
4399 if (ec.ContainerType.IsValueType) {
4400 Report.Error (522, loc,
4401 "`{0}': Struct constructors cannot call base constructors", TypeManager.CSharpSignature (caller_builder));
4405 t = ec.ContainerType;
4407 base_constructor_group = Expression.MemberLookup (
4408 ec.ContainerType, t, ".ctor", MemberTypes.Constructor,
4409 BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly,
4412 if (base_constructor_group == null){
4414 base_constructor_group = Expression.MemberLookup (
4415 t, null, t, ".ctor", MemberTypes.Constructor,
4416 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly,
4420 int errors = Report.Errors;
4421 if (base_constructor_group != null)
4422 base_constructor = (ConstructorInfo) Invocation.OverloadResolve (
4423 ec, (MethodGroupExpr) base_constructor_group, argument_list,
4426 if (base_constructor == null) {
4427 if (errors == Report.Errors)
4428 Invocation.Error_WrongNumArguments (loc, TypeManager.CSharpSignature (caller_builder),
4429 argument_list == null ? 0 : argument_list.Count);
4434 Report.SymbolRelatedToPreviousError (base_constructor);
4435 Expression.ErrorIsInaccesible (loc, TypeManager.CSharpSignature (base_constructor));
4436 base_constructor = null;
4440 if (base_constructor == caller_builder){
4441 Report.Error (516, loc, "Constructor `{0}' cannot call itself", TypeManager.CSharpSignature (caller_builder));
4448 public virtual void Emit (EmitContext ec)
4450 if (base_constructor != null){
4451 ec.Mark (loc, false);
4453 Invocation.EmitCall (ec, true, true, null, base_constructor, argument_list, loc);
4455 Invocation.EmitCall (ec, true, false, ec.GetThis (loc), base_constructor, argument_list, loc);
4460 public class ConstructorBaseInitializer : ConstructorInitializer {
4461 public ConstructorBaseInitializer (ArrayList argument_list, Location l) :
4462 base (argument_list, l)
4467 class GeneratedBaseInitializer: ConstructorBaseInitializer {
4468 public GeneratedBaseInitializer (Location loc):
4474 public class ConstructorThisInitializer : ConstructorInitializer {
4475 public ConstructorThisInitializer (ArrayList argument_list, Location l) :
4476 base (argument_list, l)
4481 public class Constructor : MethodCore, IMethodData, IAnonymousHost {
4482 public ConstructorBuilder ConstructorBuilder;
4483 public ConstructorInitializer Initializer;
4484 ListDictionary declarative_security;
4485 ArrayList anonymous_methods;
4488 // Modifiers allowed for a constructor.
4490 public const int AllowedModifiers =
4492 Modifiers.PROTECTED |
4493 Modifiers.INTERNAL |
4499 static string[] attribute_targets = new string [] { "method" };
4501 public Iterator Iterator {
4502 get { return null; }
4505 bool has_compliant_args = false;
4507 // The spec claims that static is not permitted, but
4508 // my very own code has static constructors.
4510 public Constructor (DeclSpace parent, string name, int mod, Parameters args,
4511 ConstructorInitializer init, Location loc)
4512 : base (parent, null, null, mod, AllowedModifiers, false,
4513 new MemberName (name, loc), null, args)
4518 public bool HasCompliantArgs {
4519 get { return has_compliant_args; }
4522 public override AttributeTargets AttributeTargets {
4523 get { return AttributeTargets.Constructor; }
4528 // Returns true if this is a default constructor
4530 public bool IsDefault ()
4532 if ((ModFlags & Modifiers.STATIC) != 0)
4533 return Parameters.Empty;
4535 return Parameters.Empty &&
4536 (Initializer is ConstructorBaseInitializer) &&
4537 (Initializer.Arguments == null);
4540 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
4542 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
4543 if (declarative_security == null) {
4544 declarative_security = new ListDictionary ();
4546 a.ExtractSecurityPermissionSet (declarative_security);
4550 if (a.Type == TypeManager.methodimpl_attr_type &&
4551 (a.GetMethodImplOptions () & MethodImplOptions.InternalCall) != 0) {
4552 ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall | MethodImplAttributes.Runtime);
4555 ConstructorBuilder.SetCustomAttribute (cb);
4558 public void AddAnonymousMethod (AnonymousMethodExpression anonymous)
4560 if (anonymous_methods == null)
4561 anonymous_methods = new ArrayList ();
4562 anonymous_methods.Add (anonymous);
4565 public bool ResolveMembers ()
4567 if (anonymous_methods != null) {
4568 foreach (AnonymousMethodExpression ame in anonymous_methods) {
4569 if (!ame.CreateAnonymousHelpers ())
4577 protected override bool CheckForDuplications ()
4579 ArrayList ar = Parent.PartialContainer.InstanceConstructors;
4581 int arLen = ar.Count;
4583 for (int i = 0; i < arLen; i++) {
4584 Constructor m = (Constructor) ar [i];
4585 if (IsDuplicateImplementation (m))
4592 protected override bool CheckBase ()
4594 if ((ModFlags & Modifiers.STATIC) != 0) {
4595 if (!Parameters.Empty) {
4596 Report.Error (132, Location, "`{0}': The static constructor must be parameterless",
4597 GetSignatureForError ());
4601 // the rest can be ignored
4605 // Check whether arguments were correct.
4606 if (!DoDefineParameters ())
4609 if (!CheckForDuplications ())
4612 if (Parent.PartialContainer.Kind == Kind.Struct) {
4613 if (ParameterTypes.Length == 0) {
4614 Report.Error (568, Location,
4615 "Structs cannot contain explicit parameterless constructors");
4619 if ((ModFlags & Modifiers.PROTECTED) != 0) {
4620 Report.Error (666, Location, "`{0}': new protected member declared in struct", GetSignatureForError ());
4625 if ((RootContext.WarningLevel >= 4) && ((Parent.ModFlags & Modifiers.SEALED) != 0 && (ModFlags & Modifiers.PROTECTED) != 0)) {
4626 Report.Warning (628, 4, Location, "`{0}': new protected member declared in sealed class", GetSignatureForError ());
4633 // Creates the ConstructorBuilder
4635 public override bool Define ()
4637 if (ConstructorBuilder != null)
4640 MethodAttributes ca = (MethodAttributes.RTSpecialName |
4641 MethodAttributes.SpecialName);
4643 if ((ModFlags & Modifiers.STATIC) != 0) {
4644 ca |= MethodAttributes.Static | MethodAttributes.Private;
4646 ca |= MethodAttributes.HideBySig;
4648 if ((ModFlags & Modifiers.PUBLIC) != 0)
4649 ca |= MethodAttributes.Public;
4650 else if ((ModFlags & Modifiers.PROTECTED) != 0){
4651 if ((ModFlags & Modifiers.INTERNAL) != 0)
4652 ca |= MethodAttributes.FamORAssem;
4654 ca |= MethodAttributes.Family;
4655 } else if ((ModFlags & Modifiers.INTERNAL) != 0)
4656 ca |= MethodAttributes.Assembly;
4658 ca |= MethodAttributes.Private;
4661 if (!CheckAbstractAndExtern (block != null))
4664 // Check if arguments were correct.
4668 ConstructorBuilder = Parent.TypeBuilder.DefineConstructor (
4669 ca, CallingConventions,
4672 if ((ModFlags & Modifiers.UNSAFE) != 0)
4673 ConstructorBuilder.InitLocals = false;
4675 if (Parent.PartialContainer.IsComImport) {
4676 if (!IsDefault ()) {
4677 Report.Error (669, Location, "`{0}': A class with the ComImport attribute cannot have a user-defined constructor",
4678 Parent.GetSignatureForError ());
4681 ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall);
4684 TypeManager.AddMethod (ConstructorBuilder, this);
4692 public override void Emit ()
4694 if (OptAttributes != null)
4695 OptAttributes.Emit ();
4697 EmitContext ec = CreateEmitContext (null, null);
4699 if (block != null) {
4700 // If this is a non-static `struct' constructor and doesn't have any
4701 // initializer, it must initialize all of the struct's fields.
4702 if ((Parent.PartialContainer.Kind == Kind.Struct) &&
4703 ((ModFlags & Modifiers.STATIC) == 0) && (Initializer == null))
4704 block.AddThisVariable (Parent, Location);
4706 if (!block.ResolveMeta (ec, ParameterInfo))
4710 if ((ModFlags & Modifiers.STATIC) == 0){
4711 if (Parent.PartialContainer.Kind == Kind.Class && Initializer == null)
4712 Initializer = new GeneratedBaseInitializer (Location);
4716 // Spec mandates that Initializers will not have
4720 if ((Initializer != null) &&
4721 !Initializer.Resolve (ConstructorBuilder, block, ec))
4723 ec.IsStatic = false;
4726 Parameters.ApplyAttributes (ConstructorBuilder);
4728 SourceMethod source = SourceMethod.Create (
4729 Parent, ConstructorBuilder, block);
4732 // Classes can have base initializers and instance field initializers.
4734 if (Parent.PartialContainer.Kind == Kind.Class){
4735 if ((ModFlags & Modifiers.STATIC) == 0){
4738 // If we use a "this (...)" constructor initializer, then
4739 // do not emit field initializers, they are initialized in the other constructor
4741 if (!(Initializer != null && Initializer is ConstructorThisInitializer))
4742 Parent.PartialContainer.EmitFieldInitializers (ec);
4746 bool unreachable = false;
4747 if (block != null) {
4748 ec.ResolveTopBlock (null, block, ParameterInfo, this, out unreachable);
4749 ec.EmitMeta (block);
4752 if (Initializer != null) {
4753 Initializer.Emit (ec);
4756 if ((ModFlags & Modifiers.STATIC) != 0)
4757 Parent.PartialContainer.EmitFieldInitializers (ec);
4760 ec.EmitResolvedTopBlock (block, unreachable);
4763 source.CloseMethod ();
4767 if (declarative_security != null) {
4768 foreach (DictionaryEntry de in declarative_security) {
4769 ConstructorBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
4776 // Is never override
4777 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
4782 public override string GetSignatureForError()
4784 return base.GetSignatureForError () + Parameters.GetSignatureForError ();
4787 public override string[] ValidAttributeTargets {
4789 return attribute_targets;
4793 protected override bool VerifyClsCompliance ()
4795 if (!base.VerifyClsCompliance () || !IsExposedFromAssembly ()) {
4799 if (ParameterInfo.Count > 0) {
4800 ArrayList al = (ArrayList)Parent.MemberCache.Members [".ctor"];
4802 MemberCache.VerifyClsParameterConflict (al, this, ConstructorBuilder);
4804 if (Parent.TypeBuilder.IsSubclassOf (TypeManager.attribute_type)) {
4805 foreach (Type param in ParameterTypes) {
4806 if (param.IsArray) {
4812 has_compliant_args = true;
4816 #region IMethodData Members
4818 public System.Reflection.CallingConventions CallingConventions {
4820 CallingConventions cc = Parameters.CallingConvention;
4822 if (Parent.PartialContainer.Kind == Kind.Class)
4823 if ((ModFlags & Modifiers.STATIC) == 0)
4824 cc |= CallingConventions.HasThis;
4826 // FIXME: How is `ExplicitThis' used in C#?
4832 public new Location Location {
4834 return base.Location;
4838 public MemberName MethodName {
4844 public Type ReturnType {
4850 public EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
4852 ILGenerator ig_ = ConstructorBuilder.GetILGenerator ();
4853 return new EmitContext (this, Parent, Location, ig_, null, ModFlags, true);
4856 public bool IsExcluded()
4861 GenericMethod IMethodData.GenericMethod {
4871 /// Interface for MethodData class. Holds links to parent members to avoid member duplication.
4873 public interface IMethodData
4875 CallingConventions CallingConventions { get; }
4876 Location Location { get; }
4877 MemberName MethodName { get; }
4878 Type ReturnType { get; }
4879 GenericMethod GenericMethod { get; }
4880 Parameters ParameterInfo { get; }
4882 Iterator Iterator { get; }
4884 Attributes OptAttributes { get; }
4885 ToplevelBlock Block { get; set; }
4887 EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig);
4888 ObsoleteAttribute GetObsoleteAttribute ();
4889 string GetSignatureForError ();
4891 bool IsClsComplianceRequired ();
4892 void SetMemberIsUsed ();
4896 // Encapsulates most of the Method's state
4898 public class MethodData {
4900 readonly IMethodData method;
4902 public readonly GenericMethod GenericMethod;
4905 // Are we implementing an interface ?
4907 public MethodInfo implementing;
4912 protected MemberBase member;
4913 protected int modifiers;
4914 protected MethodAttributes flags;
4915 protected Type declaring_type;
4916 protected MethodInfo parent_method;
4918 MethodBuilder builder = null;
4919 public MethodBuilder MethodBuilder {
4925 public Type DeclaringType {
4927 return declaring_type;
4931 public MethodData (MemberBase member,
4932 int modifiers, MethodAttributes flags, IMethodData method)
4934 this.member = member;
4935 this.modifiers = modifiers;
4938 this.method = method;
4941 public MethodData (MemberBase member,
4942 int modifiers, MethodAttributes flags,
4943 IMethodData method, MethodBuilder builder,
4944 GenericMethod generic, MethodInfo parent_method)
4945 : this (member, modifiers, flags, method)
4947 this.builder = builder;
4948 this.GenericMethod = generic;
4949 this.parent_method = parent_method;
4952 public bool Define (DeclSpace parent)
4954 string name = method.MethodName.Basename;
4955 string method_name = method.MethodName.FullName;
4957 TypeContainer container = parent.PartialContainer;
4959 PendingImplementation pending = container.PendingImplementations;
4960 if (pending != null){
4961 if (member is Indexer) // TODO: test it, but it should work without this IF
4962 implementing = pending.IsInterfaceIndexer (
4963 member.InterfaceType, method.ReturnType, method.ParameterInfo);
4965 implementing = pending.IsInterfaceMethod (
4966 member.InterfaceType, name, method.ReturnType, method.ParameterInfo);
4968 if (member.InterfaceType != null){
4969 if (implementing == null){
4970 if (member is PropertyBase) {
4971 Report.Error (550, method.Location, "`{0}' is an accessor not found in interface member `{1}{2}'",
4972 method.GetSignatureForError (), TypeManager.CSharpName (member.InterfaceType),
4973 member.GetSignatureForError ().Substring (member.GetSignatureForError ().LastIndexOf ('.')));
4976 Report.Error (539, method.Location,
4977 "`{0}.{1}' in explicit interface declaration is not a member of interface",
4978 TypeManager.CSharpName (member.InterfaceType), member.ShortName);
4982 if (implementing.IsSpecialName && !(method is AbstractPropertyEventMethod)) {
4983 Report.SymbolRelatedToPreviousError (implementing);
4984 Report.Error (683, method.Location, "`{0}' explicit method implementation cannot implement `{1}' because it is an accessor",
4985 member.GetSignatureForError (), TypeManager.CSharpSignature (implementing));
4989 method_name = TypeManager.GetFullName (member.InterfaceType) +
4992 if (implementing != null) {
4993 AbstractPropertyEventMethod prop_method = method as AbstractPropertyEventMethod;
4994 if (prop_method == null) {
4995 if (implementing.IsSpecialName) {
4996 Report.SymbolRelatedToPreviousError (implementing);
4997 Report.Error (470, method.Location, "Method `{0}' cannot implement interface accessor `{1}.{2}'",
4998 method.GetSignatureForError (), TypeManager.CSharpSignature (implementing),
4999 implementing.Name.StartsWith ("get_") ? "get" : "set");
5002 } else if (implementing.DeclaringType.IsInterface) {
5003 if (!implementing.IsSpecialName) {
5004 Report.SymbolRelatedToPreviousError (implementing);
5005 Report.Error (686, method.Location, "Accessor `{0}' cannot implement interface member `{1}' for type `{2}'. Use an explicit interface implementation",
5006 method.GetSignatureForError (), TypeManager.CSharpSignature (implementing), container.GetSignatureForError ());
5009 PropertyBase.PropertyMethod pm = prop_method as PropertyBase.PropertyMethod;
5010 if (pm != null && pm.HasCustomAccessModifier && (pm.ModFlags & Modifiers.PUBLIC) == 0) {
5011 Report.SymbolRelatedToPreviousError (implementing);
5012 Report.Error (277, method.Location, "Accessor `{0}' must be declared public to implement interface member `{1}'",
5013 method.GetSignatureForError (), TypeManager.CSharpSignature (implementing, true));
5022 // For implicit implementations, make sure we are public, for
5023 // explicit implementations, make sure we are private.
5025 if (implementing != null){
5027 // Setting null inside this block will trigger a more
5028 // verbose error reporting for missing interface implementations
5030 // The "candidate" function has been flagged already
5031 // but it wont get cleared
5033 if (member.IsExplicitImpl){
5034 if (method.ParameterInfo.HasParams && !TypeManager.GetParameterData (implementing).HasParams) {
5035 Report.SymbolRelatedToPreviousError (implementing);
5036 Report.Error (466, method.Location, "`{0}': the explicit interface implementation cannot introduce the params modifier",
5037 method.GetSignatureForError ());
5040 } else if ((flags & MethodAttributes.MemberAccessMask) != MethodAttributes.Public){
5041 if (TypeManager.IsInterfaceType (implementing.DeclaringType)){
5043 // If this is an interface method implementation,
5044 // check for public accessibility
5046 implementing = null;
5047 } else if ((flags & MethodAttributes.MemberAccessMask) == MethodAttributes.Private){
5048 // We may never be private.
5049 implementing = null;
5050 } else if ((modifiers & Modifiers.OVERRIDE) == 0){
5052 // We may be protected if we're overriding something.
5054 implementing = null;
5059 // Static is not allowed
5061 if ((modifiers & Modifiers.STATIC) != 0){
5062 implementing = null;
5067 // If implementing is still valid, set flags
5069 if (implementing != null){
5071 // When implementing interface methods, set NewSlot
5072 // unless, we are overwriting a method.
5074 if (implementing.DeclaringType.IsInterface){
5075 if ((modifiers & Modifiers.OVERRIDE) == 0)
5076 flags |= MethodAttributes.NewSlot;
5079 MethodAttributes.Virtual |
5080 MethodAttributes.HideBySig;
5082 // Set Final unless we're virtual, abstract or already overriding a method.
5083 if ((modifiers & (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE)) == 0)
5084 flags |= MethodAttributes.Final;
5087 EmitContext ec = method.CreateEmitContext (container, null);
5089 DefineMethodBuilder (container, method_name, method.ParameterInfo.Types);
5091 if (builder == null)
5094 if (container.CurrentType != null)
5095 declaring_type = container.CurrentType;
5097 declaring_type = container.TypeBuilder;
5099 if ((modifiers & Modifiers.UNSAFE) != 0)
5100 builder.InitLocals = false;
5102 if (implementing != null){
5104 // clear the pending implemntation flag
5106 if (member is Indexer) {
5107 pending.ImplementIndexer (
5108 member.InterfaceType, builder, method.ReturnType,
5109 method.ParameterInfo, member.IsExplicitImpl);
5111 pending.ImplementMethod (
5112 member.InterfaceType, name, method.ReturnType,
5113 method.ParameterInfo, member.IsExplicitImpl);
5115 if (member.IsExplicitImpl)
5116 container.TypeBuilder.DefineMethodOverride (
5117 builder, implementing);
5121 TypeManager.AddMethod (builder, method);
5123 if (GenericMethod != null) {
5124 bool is_override = member.IsExplicitImpl |
5125 ((modifiers & Modifiers.OVERRIDE) != 0);
5127 if (implementing != null)
5128 parent_method = implementing;
5130 if (!GenericMethod.DefineType (ec, builder, parent_method, is_override))
5139 /// Create the MethodBuilder for the method
5141 void DefineMethodBuilder (TypeContainer container, string method_name, Type[] ParameterTypes)
5143 const int extern_static = Modifiers.EXTERN | Modifiers.STATIC;
5145 if ((modifiers & extern_static) == extern_static) {
5147 if (method.OptAttributes != null) {
5148 Attribute dllimport_attribute = method.OptAttributes.Search (TypeManager.dllimport_type);
5149 if (dllimport_attribute != null) {
5150 flags |= MethodAttributes.PinvokeImpl;
5151 builder = dllimport_attribute.DefinePInvokeMethod (
5152 container.TypeBuilder, method_name, flags,
5153 method.ReturnType, ParameterTypes);
5159 // for extern static method must be specified either DllImport attribute or MethodImplAttribute.
5160 // We are more strict than Microsoft and report CS0626 like error
5161 if (method.OptAttributes == null ||
5162 !method.OptAttributes.Contains (TypeManager.methodimpl_attr_type)) {
5163 Report.Error (626, method.Location, "Method, operator, or accessor `{0}' is marked external and has no attributes on it. Consider adding a DllImport attribute to specify the external implementation",
5164 method.GetSignatureForError ());
5169 if (builder == null) {
5170 builder = container.TypeBuilder.DefineMethod (
5171 method_name, flags, method.CallingConventions,
5172 method.ReturnType, ParameterTypes);
5176 #if GMCS_SOURCE && !MS_COMPATIBLE
5177 builder.SetGenericMethodSignature (
5178 flags, method.CallingConventions,
5179 method.ReturnType, ParameterTypes);
5186 public void Emit (DeclSpace parent)
5189 if ((flags & MethodAttributes.PinvokeImpl) == 0)
5190 ec = method.CreateEmitContext (parent, builder.GetILGenerator ());
5192 ec = method.CreateEmitContext (parent, null);
5194 method.ParameterInfo.ApplyAttributes (MethodBuilder);
5196 if (GenericMethod != null)
5197 GenericMethod.EmitAttributes ();
5199 ToplevelBlock block = method.Block;
5201 SourceMethod source = SourceMethod.Create (parent, MethodBuilder, method.Block);
5204 // Handle destructors specially
5206 // FIXME: This code generates buggy code
5208 if (member is Destructor)
5209 EmitDestructor (ec, block);
5211 ec.EmitTopBlock (method, block);
5214 source.CloseMethod ();
5217 void EmitDestructor (EmitContext ec, ToplevelBlock block)
5219 ILGenerator ig = ec.ig;
5221 Label finish = ig.DefineLabel ();
5223 block.SetDestructor ();
5225 ig.BeginExceptionBlock ();
5226 ec.ReturnLabel = finish;
5227 ec.HasReturnLabel = true;
5228 ec.EmitTopBlock (method, block);
5230 // ig.MarkLabel (finish);
5231 ig.BeginFinallyBlock ();
5233 if (ec.ContainerType.BaseType != null) {
5234 Expression member_lookup = Expression.MemberLookup (
5235 ec.ContainerType.BaseType, null, ec.ContainerType.BaseType,
5236 "Finalize", MemberTypes.Method, Expression.AllBindingFlags, method.Location);
5238 if (member_lookup != null){
5239 MethodGroupExpr base_destructor = ((MethodGroupExpr) member_lookup);
5241 ig.Emit (OpCodes.Ldarg_0);
5242 ig.Emit (OpCodes.Call, (MethodInfo) base_destructor.Methods [0]);
5246 ig.EndExceptionBlock ();
5247 //ig.MarkLabel (ec.ReturnLabel);
5248 ig.Emit (OpCodes.Ret);
5252 // TODO: Should derive from MethodCore
5253 public class Destructor : Method {
5255 static string[] attribute_targets = new string [] { "method" };
5257 public Destructor (DeclSpace parent, Expression return_type, int mod,
5258 string name, Parameters parameters, Attributes attrs,
5260 : base (parent, null, return_type, mod, false, new MemberName (name, l),
5264 public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
5266 if (a.Type == TypeManager.conditional_attribute_type) {
5267 Error_ConditionalAttributeIsNotValid ();
5271 base.ApplyAttributeBuilder (a, cb);
5274 public override string GetSignatureForError ()
5276 return Parent.GetSignatureForError () + ".~" + Parent.MemberName.Name + "()";
5279 public override string[] ValidAttributeTargets {
5281 return attribute_targets;
5286 abstract public class MemberBase : MemberCore {
5287 public Expression Type;
5289 public MethodAttributes flags;
5290 public readonly DeclSpace ds;
5291 public readonly GenericMethod GenericMethod;
5293 protected readonly int explicit_mod_flags;
5296 // The "short" name of this property / indexer / event. This is the
5297 // name without the explicit interface.
5299 public string ShortName {
5300 get { return MemberName.Name; }
5301 set { SetMemberName (new MemberName (MemberName.Left, value, Location)); }
5305 // The type of this property / indexer / event
5307 protected Type member_type;
5308 public Type MemberType {
5310 if (member_type == null && Type != null) {
5311 IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
5312 Type = Type.ResolveAsTypeTerminal (rc, false);
5314 member_type = Type.Type;
5322 // Whether this is an interface member.
5324 public bool IsInterface;
5327 // If true, this is an explicit interface implementation
5329 public bool IsExplicitImpl;
5332 // The interface type we are explicitly implementing
5334 public Type InterfaceType = null;
5337 // The constructor is only exposed to our children
5339 protected MemberBase (DeclSpace parent, GenericMethod generic,
5340 Expression type, int mod, int allowed_mod, int def_mod,
5341 MemberName name, Attributes attrs)
5342 : base (parent, name, attrs)
5344 this.ds = generic != null ? generic : (DeclSpace) parent;
5345 explicit_mod_flags = mod;
5347 ModFlags = Modifiers.Check (allowed_mod, mod, def_mod, Location);
5348 IsExplicitImpl = (MemberName.Left != null);
5349 GenericMethod = generic;
5350 if (GenericMethod != null)
5351 GenericMethod.ModFlags = ModFlags;
5354 protected virtual bool CheckBase ()
5356 if ((ModFlags & Modifiers.PROTECTED) != 0 && Parent.PartialContainer.Kind == Kind.Struct) {
5357 Report.Error (666, Location, "`{0}': new protected member declared in struct", GetSignatureForError ());
5361 if ((RootContext.WarningLevel >= 4) &&
5362 ((Parent.ModFlags & Modifiers.SEALED) != 0) &&
5363 ((ModFlags & Modifiers.PROTECTED) != 0) &&
5364 ((ModFlags & Modifiers.OVERRIDE) == 0) && (Name != "Finalize")) {
5365 Report.Warning (628, 4, Location, "`{0}': new protected member declared in sealed class", GetSignatureForError ());
5370 protected virtual bool DoDefineBase ()
5373 throw new InternalErrorException ();
5376 ModFlags = Modifiers.PUBLIC |
5377 Modifiers.ABSTRACT |
5378 Modifiers.VIRTUAL | (ModFlags & Modifiers.UNSAFE) | (ModFlags & Modifiers.NEW);
5380 flags = MethodAttributes.Public |
5381 MethodAttributes.Abstract |
5382 MethodAttributes.HideBySig |
5383 MethodAttributes.NewSlot |
5384 MethodAttributes.Virtual;
5386 if (!Parent.PartialContainer.MethodModifiersValid (this))
5389 flags = Modifiers.MethodAttr (ModFlags);
5392 if (IsExplicitImpl) {
5393 Expression expr = MemberName.Left.GetTypeExpression ();
5394 TypeExpr iface_texpr = expr.ResolveAsTypeTerminal (this, false);
5395 if (iface_texpr == null)
5398 InterfaceType = iface_texpr.Type;
5400 if (!InterfaceType.IsInterface) {
5401 Report.Error (538, Location, "'{0}' in explicit interface declaration is not an interface", TypeManager.CSharpName (InterfaceType));
5405 if (!Parent.PartialContainer.VerifyImplements (this))
5408 Modifiers.Check (Modifiers.AllowedExplicitImplFlags, explicit_mod_flags, 0, Location);
5414 protected virtual bool DoDefine ()
5416 if (MemberType == null)
5419 if ((Parent.ModFlags & Modifiers.SEALED) != 0 &&
5420 (ModFlags & (Modifiers.VIRTUAL|Modifiers.ABSTRACT)) != 0) {
5421 Report.Error (549, Location, "New virtual member `{0}' is declared in a sealed class `{1}'",
5422 GetSignatureForError (), Parent.GetSignatureForError ());
5426 // verify accessibility
5427 if (!Parent.AsAccessible (MemberType, ModFlags)) {
5428 Report.SymbolRelatedToPreviousError (MemberType);
5429 if (this is Property)
5430 Report.Error (53, Location,
5431 "Inconsistent accessibility: property type `" +
5432 TypeManager.CSharpName (MemberType) + "' is less " +
5433 "accessible than property `" + GetSignatureForError () + "'");
5434 else if (this is Indexer)
5435 Report.Error (54, Location,
5436 "Inconsistent accessibility: indexer return type `" +
5437 TypeManager.CSharpName (MemberType) + "' is less " +
5438 "accessible than indexer `" + GetSignatureForError () + "'");
5439 else if (this is MethodCore) {
5440 if (this is Operator)
5441 Report.Error (56, Location,
5442 "Inconsistent accessibility: return type `" +
5443 TypeManager.CSharpName (MemberType) + "' is less " +
5444 "accessible than operator `" + GetSignatureForError () + "'");
5446 Report.Error (50, Location,
5447 "Inconsistent accessibility: return type `" +
5448 TypeManager.CSharpName (MemberType) + "' is less " +
5449 "accessible than method `" + GetSignatureForError () + "'");
5451 Report.Error (52, Location,
5452 "Inconsistent accessibility: field type `" +
5453 TypeManager.CSharpName (MemberType) + "' is less " +
5454 "accessible than field `" + GetSignatureForError () + "'");
5459 if (IsExplicitImpl) {
5460 Expression expr = MemberName.Left.GetTypeExpression ();
5461 TypeExpr texpr = expr.ResolveAsTypeTerminal (this, false);
5465 InterfaceType = texpr.Type;
5467 if (!InterfaceType.IsInterface) {
5468 Report.Error (538, Location, "`{0}' in explicit interface declaration is not an interface", TypeManager.CSharpName (InterfaceType));
5472 if (!Parent.PartialContainer.VerifyImplements (this))
5480 protected bool IsTypePermitted ()
5482 if (MemberType == TypeManager.arg_iterator_type || MemberType == TypeManager.typed_reference_type) {
5483 Report.Error (610, Location, "Field or property cannot be of type `{0}'", TypeManager.CSharpName (MemberType));
5489 protected override bool VerifyClsCompliance()
5491 if (base.VerifyClsCompliance ()) {
5492 if (GenericMethod != null)
5493 GenericMethod.VerifyClsCompliance ();
5498 if (IsInterface && HasClsCompliantAttribute && Parent.IsClsComplianceRequired ()) {
5499 Report.Error (3010, Location, "`{0}': CLS-compliant interfaces must have only CLS-compliant members", GetSignatureForError ());
5507 // Fields and Events both generate FieldBuilders, we use this to share
5508 // their common bits. This is also used to flag usage of the field
5510 abstract public class FieldBase : MemberBase {
5511 public FieldBuilder FieldBuilder;
5512 public Status status;
5513 protected Expression initializer;
5514 ExpressionStatement initializerStatement;
5517 public enum Status : byte {
5518 HAS_OFFSET = 4 // Used by FieldMember.
5521 static string[] attribute_targets = new string [] { "field" };
5524 /// Symbol with same name in base class/struct
5526 public MemberInfo conflict_symbol;
5528 protected FieldBase (DeclSpace parent, Expression type, int mod,
5529 int allowed_mod, MemberName name, Attributes attrs)
5530 : base (parent, null, type, mod, allowed_mod, Modifiers.PRIVATE,
5535 public override AttributeTargets AttributeTargets {
5537 return AttributeTargets.Field;
5541 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
5543 if (a.Type == TypeManager.marshal_as_attr_type) {
5544 UnmanagedMarshal marshal = a.GetMarshal (this);
5545 if (marshal != null) {
5546 FieldBuilder.SetMarshal (marshal);
5551 if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
5552 a.Error_InvalidSecurityParent ();
5556 FieldBuilder.SetCustomAttribute (cb);
5559 public void EmitInitializer (EmitContext ec)
5561 initializerStatement.EmitStatement (ec);
5564 protected override bool CheckBase ()
5566 if (!base.CheckBase ())
5573 conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Name, false);
5574 if (conflict_symbol == null) {
5575 if ((RootContext.WarningLevel >= 4) && ((ModFlags & Modifiers.NEW) != 0)) {
5576 Report.Warning (109, 4, Location, "The member `{0}' does not hide an inherited member. The new keyword is not required", GetSignatureForError ());
5581 if ((ModFlags & (Modifiers.NEW | Modifiers.OVERRIDE)) == 0) {
5582 Report.SymbolRelatedToPreviousError (conflict_symbol);
5583 Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
5584 GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
5590 public Expression Initializer {
5592 if (value != null) {
5593 this.initializer = value;
5594 Parent.PartialContainer.RegisterFieldForInitialization (this);
5599 protected virtual bool IsFieldClsCompliant {
5601 if (FieldBuilder == null)
5604 return AttributeTester.IsClsCompliant (FieldBuilder.FieldType);
5608 public Expression ResolveInitializer ()
5610 // TODO: again it's too heavy-weight
5611 EmitContext ec = new EmitContext (this, Parent, Location, null, null, ModFlags);
5612 ec.IsFieldInitializer = true;
5613 initializer = initializer.Resolve (ec);
5614 if (initializer == null)
5616 if (FieldBuilder == null)
5619 FieldExpr fe = new FieldExpr (FieldBuilder, Location, true);
5620 if ((ModFlags & Modifiers.STATIC) == 0)
5622 fe.InstanceExpression = CompilerGeneratedThis.Instance;
5625 initializerStatement = new Assign (fe, initializer, Location).ResolveStatement (ec);
5629 public bool HasDefaultInitializer
5633 Constant c = initializer as Constant;
5637 return c.IsDefaultInitializer (MemberType);
5641 public override string[] ValidAttributeTargets
5644 return attribute_targets;
5648 protected override bool VerifyClsCompliance ()
5650 if (!base.VerifyClsCompliance ())
5653 if (!IsFieldClsCompliant) {
5654 Report.Error (3003, Location, "Type of `{0}' is not CLS-compliant", GetSignatureForError ());
5660 public void SetAssigned ()
5662 caching_flags |= Flags.IsAssigned;
5666 public abstract class FieldMember : FieldBase
5668 protected FieldMember (DeclSpace parent, Expression type, int mod,
5669 int allowed_mod, MemberName name, Attributes attrs)
5670 : base (parent, type, mod, allowed_mod | Modifiers.ABSTRACT, name, attrs)
5672 if ((mod & Modifiers.ABSTRACT) != 0)
5673 Report.Error (681, Location, "The modifier 'abstract' is not valid on fields. Try using a property instead");
5676 public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
5678 if (a.Type == TypeManager.field_offset_attribute_type)
5680 status |= Status.HAS_OFFSET;
5682 if (!Parent.PartialContainer.HasExplicitLayout) {
5683 Report.Error (636, Location, "The FieldOffset attribute can only be placed on members of types marked with the StructLayout(LayoutKind.Explicit)");
5687 if ((ModFlags & Modifiers.STATIC) != 0 || this is Const) {
5688 Report.Error (637, Location, "The FieldOffset attribute is not allowed on static or const fields");
5694 if (a.Type == TypeManager.fixed_buffer_attr_type) {
5695 Report.Error (1716, Location, "Do not use 'System.Runtime.CompilerServices.FixedBuffer' attribute. Use the 'fixed' field modifier instead");
5700 base.ApplyAttributeBuilder (a, cb);
5703 public override bool Define()
5705 if (MemberType == null || Type == null)
5708 if (MemberType == TypeManager.void_type) {
5709 // TODO: wrong location
5710 Expression.Error_VoidInvalidInTheContext (Location);
5714 if (MemberType.IsSealed && MemberType.IsAbstract) {
5715 Error_VariableOfStaticClass (Location, GetSignatureForError (), MemberType);
5722 if (!Parent.AsAccessible (MemberType, ModFlags)) {
5723 Report.Error (52, Location,
5724 "Inconsistent accessibility: field type `" +
5725 TypeManager.CSharpName (MemberType) + "' is less " +
5726 "accessible than field `" + GetSignatureForError () + "'");
5730 if (!IsTypePermitted ())
5736 public override void Emit ()
5738 if (OptAttributes != null) {
5739 OptAttributes.Emit ();
5742 if (((status & Status.HAS_OFFSET) == 0) && (ModFlags & Modifiers.STATIC) == 0 && Parent.PartialContainer.HasExplicitLayout) {
5743 Report.Error (625, Location, "`{0}': Instance field types marked with StructLayout(LayoutKind.Explicit) must have a FieldOffset attribute.", GetSignatureForError ());
5749 public static void Error_VariableOfStaticClass (Location loc, string variableName, Type staticClass)
5751 Report.SymbolRelatedToPreviousError (staticClass);
5752 Report.Error (723, loc, "`{0}': cannot declare variables of static types",
5757 // Represents header string for documentation comment.
5759 public override string DocCommentHeader {
5760 get { return "F:"; }
5764 interface IFixedBuffer
5766 FieldInfo Element { get; }
5767 Type ElementType { get; }
5770 public class FixedFieldExternal: IFixedBuffer
5772 FieldInfo element_field;
5774 public FixedFieldExternal (FieldInfo fi)
5776 element_field = fi.FieldType.GetField (FixedField.FixedElementName);
5779 #region IFixedField Members
5781 public FieldInfo Element {
5783 return element_field;
5787 public Type ElementType {
5789 return element_field.FieldType;
5797 /// Fixed buffer implementation
5799 public class FixedField : FieldMember, IFixedBuffer
5801 public const string FixedElementName = "FixedElementField";
5802 static int GlobalCounter = 0;
5803 static object[] ctor_args = new object[] { (short)LayoutKind.Sequential };
5804 static FieldInfo[] fi;
5806 TypeBuilder fixed_buffer_type;
5807 FieldBuilder element;
5808 Expression size_expr;
5811 const int AllowedModifiers =
5814 Modifiers.PROTECTED |
5815 Modifiers.INTERNAL |
5818 public FixedField (DeclSpace parent, Expression type, int mod, string name,
5819 Expression size_expr, Attributes attrs, Location loc):
5820 base (parent, type, mod, AllowedModifiers, new MemberName (name, loc), attrs)
5822 if (RootContext.Version == LanguageVersion.ISO_1)
5823 Report.FeatureIsNotStandardized (loc, "fixed size buffers");
5825 this.size_expr = size_expr;
5828 public override bool Define()
5831 if ((ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) != 0)
5832 Report.Warning (-23, 1, Location, "Only private or internal fixed sized buffers are supported by .NET 1.x");
5835 if (Parent.PartialContainer.Kind != Kind.Struct) {
5836 Report.Error (1642, Location, "`{0}': Fixed size buffer fields may only be members of structs",
5837 GetSignatureForError ());
5841 if (!base.Define ())
5844 if (!TypeManager.IsPrimitiveType (MemberType)) {
5845 Report.Error (1663, Location, "`{0}': Fixed size buffers type must be one of the following: bool, byte, short, int, long, char, sbyte, ushort, uint, ulong, float or double",
5846 GetSignatureForError ());
5850 EmitContext ec = new EmitContext (this, Parent, Location, null, null, ModFlags);
5851 Constant c = size_expr.ResolveAsConstant (ec, this);
5855 IntConstant buffer_size_const = c.ToInt (Location);
5856 if (buffer_size_const == null)
5859 buffer_size = buffer_size_const.Value;
5861 if (buffer_size <= 0) {
5862 Report.Error (1665, Location, "`{0}': Fixed size buffers must have a length greater than zero", GetSignatureForError ());
5866 int type_size = Expression.GetTypeSize (MemberType);
5868 if (buffer_size > int.MaxValue / type_size) {
5869 Report.Error (1664, Location, "Fixed size buffer `{0}' of length `{1}' and type `{2}' exceeded 2^31 limit",
5870 GetSignatureForError (), buffer_size.ToString (), TypeManager.CSharpName (MemberType));
5874 buffer_size *= type_size;
5877 string name = String.Format ("<{0}>__FixedBuffer{1}", Name, GlobalCounter++);
5879 fixed_buffer_type = Parent.TypeBuilder.DefineNestedType (name,
5880 TypeAttributes.NestedPublic | TypeAttributes.Sealed | TypeAttributes.BeforeFieldInit, TypeManager.value_type);
5881 element = fixed_buffer_type.DefineField (FixedElementName, MemberType, FieldAttributes.Public);
5882 RootContext.RegisterCompilerGeneratedType (fixed_buffer_type);
5884 FieldBuilder = Parent.TypeBuilder.DefineField (Name, fixed_buffer_type, Modifiers.FieldAttr (ModFlags));
5885 TypeManager.RegisterFieldBase (FieldBuilder, this);
5890 public override void Emit()
5893 fi = new FieldInfo [] { TypeManager.struct_layout_attribute_type.GetField ("Size") };
5895 object[] fi_val = new object[1];
5896 fi_val [0] = buffer_size;
5898 CustomAttributeBuilder cab = new CustomAttributeBuilder (TypeManager.struct_layout_attribute_ctor,
5899 ctor_args, fi, fi_val);
5900 fixed_buffer_type.SetCustomAttribute (cab);
5903 cab = new CustomAttributeBuilder (TypeManager.fixed_buffer_attr_ctor, new object[] { MemberType, buffer_size } );
5904 FieldBuilder.SetCustomAttribute (cab);
5909 protected override bool IsFieldClsCompliant {
5915 #region IFixedField Members
5917 public FieldInfo Element {
5923 public Type ElementType {
5933 // The Field class is used to represents class/struct fields during parsing.
5935 public class Field : FieldMember {
5937 // Modifiers allowed in a class declaration
5939 const int AllowedModifiers =
5942 Modifiers.PROTECTED |
5943 Modifiers.INTERNAL |
5946 Modifiers.VOLATILE |
5950 public Field (DeclSpace parent, Expression type, int mod, string name,
5951 Attributes attrs, Location loc)
5952 : base (parent, type, mod, AllowedModifiers, new MemberName (name, loc),
5957 public override bool Define ()
5959 if (!base.Define ())
5962 if (RootContext.WarningLevel > 1){
5963 Type ptype = Parent.TypeBuilder.BaseType;
5965 // ptype is only null for System.Object while compiling corlib.
5967 TypeContainer.FindMembers (
5968 ptype, MemberTypes.Method,
5969 BindingFlags.Public |
5970 BindingFlags.Static | BindingFlags.Instance,
5971 System.Type.FilterName, Name);
5975 if ((ModFlags & Modifiers.VOLATILE) != 0){
5976 if (!MemberType.IsClass){
5977 Type vt = MemberType;
5979 if (TypeManager.IsEnumType (vt))
5980 vt = TypeManager.EnumToUnderlying (MemberType);
5982 if (!((vt == TypeManager.bool_type) ||
5983 (vt == TypeManager.sbyte_type) ||
5984 (vt == TypeManager.byte_type) ||
5985 (vt == TypeManager.short_type) ||
5986 (vt == TypeManager.ushort_type) ||
5987 (vt == TypeManager.int32_type) ||
5988 (vt == TypeManager.uint32_type) ||
5989 (vt == TypeManager.char_type) ||
5990 (vt == TypeManager.float_type) ||
5991 (!vt.IsValueType))){
5992 Report.Error (677, Location, "`{0}': A volatile field cannot be of the type `{1}'",
5993 GetSignatureForError (), TypeManager.CSharpName (vt));
5998 if ((ModFlags & Modifiers.READONLY) != 0){
5999 Report.Error (678, Location, "`{0}': A field cannot be both volatile and readonly",
6000 GetSignatureForError ());
6005 FieldAttributes fa = Modifiers.FieldAttr (ModFlags);
6007 if (Parent.PartialContainer.Kind == Kind.Struct &&
6008 ((fa & FieldAttributes.Static) == 0) &&
6009 MemberType == Parent.TypeBuilder &&
6010 !TypeManager.IsBuiltinType (MemberType)){
6011 Report.Error (523, Location, "Struct member `" + Parent.Name + "." + Name +
6012 "' causes a cycle in the structure layout");
6017 FieldBuilder = Parent.TypeBuilder.DefineField (
6018 Name, MemberType, Modifiers.FieldAttr (ModFlags));
6020 TypeManager.RegisterFieldBase (FieldBuilder, this);
6022 catch (ArgumentException) {
6023 Report.Warning (-24, 1, Location, "The Microsoft runtime is unable to use [void|void*] as a field type, try using the Mono runtime.");
6030 protected override bool VerifyClsCompliance ()
6032 if (!base.VerifyClsCompliance ())
6035 if ((ModFlags & Modifiers.VOLATILE) != 0) {
6036 Report.Warning (3026, 1, Location, "CLS-compliant field `{0}' cannot be volatile", GetSignatureForError ());
6044 // `set' and `get' accessors are represented with an Accessor.
6046 public class Accessor : IAnonymousHost {
6048 // Null if the accessor is empty, or a Block if not
6050 public const int AllowedModifiers =
6052 Modifiers.PROTECTED |
6053 Modifiers.INTERNAL |
6056 public ToplevelBlock Block;
6057 public Attributes Attributes;
6058 public Location Location;
6059 public int ModFlags;
6061 public ArrayList AnonymousMethods;
6063 public Accessor (ToplevelBlock b, int mod, Attributes attrs, Location loc)
6068 ModFlags = Modifiers.Check (AllowedModifiers, mod, 0, loc);
6071 public void SetYields ()
6076 public void AddAnonymousMethod (AnonymousMethodExpression ame)
6078 if (AnonymousMethods == null)
6079 AnonymousMethods = new ArrayList ();
6080 AnonymousMethods.Add (ame);
6084 // Ooouh Martin, templates are missing here.
6085 // When it will be possible move here a lot of child code and template method type.
6086 public abstract class AbstractPropertyEventMethod : MemberCore, IMethodData {
6087 protected MethodData method_data;
6088 protected ToplevelBlock block;
6089 protected ListDictionary declarative_security;
6091 // The accessor are created event if they are not wanted.
6092 // But we need them because their names are reserved.
6093 // Field says whether accessor will be emited or not
6094 public readonly bool IsDummy;
6096 protected readonly string prefix;
6098 ReturnParameter return_attributes;
6100 public AbstractPropertyEventMethod (MemberBase member, string prefix)
6101 : base (member.Parent, SetupName (prefix, member, member.Location), null)
6103 this.prefix = prefix;
6107 public AbstractPropertyEventMethod (MemberBase member, Accessor accessor,
6109 : base (member.Parent, SetupName (prefix, member, accessor.Location),
6110 accessor.Attributes)
6112 this.prefix = prefix;
6113 this.block = accessor.Block;
6116 static MemberName SetupName (string prefix, MemberBase member, Location loc)
6118 return new MemberName (member.MemberName.Left, prefix + member.ShortName, loc);
6121 public void UpdateName (MemberBase member)
6123 SetMemberName (SetupName (prefix, member, Location));
6126 #region IMethodData Members
6128 public abstract Iterator Iterator {
6132 public ToplevelBlock Block {
6142 public CallingConventions CallingConventions {
6144 return CallingConventions.Standard;
6148 public bool IsExcluded ()
6153 GenericMethod IMethodData.GenericMethod {
6159 public MemberName MethodName {
6165 public Type[] ParameterTypes {
6167 return ParameterInfo.Types;
6171 public abstract Parameters ParameterInfo { get ; }
6172 public abstract Type ReturnType { get; }
6173 public abstract EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig);
6177 public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
6179 if (a.Type == TypeManager.cls_compliant_attribute_type || a.Type == TypeManager.obsolete_attribute_type ||
6180 a.Type == TypeManager.conditional_attribute_type) {
6181 Report.Error (1667, a.Location,
6182 "Attribute `{0}' is not valid on property or event accessors. It is valid on `{1}' declarations only",
6183 TypeManager.CSharpName (a.Type), a.GetValidTargets ());
6187 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
6188 if (declarative_security == null)
6189 declarative_security = new ListDictionary ();
6190 a.ExtractSecurityPermissionSet (declarative_security);
6194 if (a.Target == AttributeTargets.Method) {
6195 method_data.MethodBuilder.SetCustomAttribute (cb);
6199 if (a.Target == AttributeTargets.ReturnValue) {
6200 if (return_attributes == null)
6201 return_attributes = new ReturnParameter (method_data.MethodBuilder, Location);
6203 return_attributes.ApplyAttributeBuilder (a, cb);
6207 ApplyToExtraTarget (a, cb);
6210 virtual protected void ApplyToExtraTarget (Attribute a, CustomAttributeBuilder cb)
6212 System.Diagnostics.Debug.Fail ("You forgot to define special attribute target handling");
6215 public override bool Define()
6217 throw new NotSupportedException ();
6220 public void Emit (DeclSpace parent)
6222 EmitMethod (parent);
6224 if (OptAttributes != null)
6225 OptAttributes.Emit ();
6227 if (declarative_security != null) {
6228 foreach (DictionaryEntry de in declarative_security) {
6229 method_data.MethodBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
6236 protected virtual void EmitMethod (DeclSpace parent)
6238 method_data.Emit (parent);
6241 public override bool IsClsComplianceRequired()
6246 public bool IsDuplicateImplementation (MethodCore method)
6248 if (!MemberName.Equals (method.MemberName))
6251 Type[] param_types = method.ParameterTypes;
6253 if (param_types.Length != ParameterTypes.Length)
6256 for (int i = 0; i < param_types.Length; i++)
6257 if (param_types [i] != ParameterTypes [i])
6260 Report.SymbolRelatedToPreviousError (method);
6261 Report.Error (111, Location, TypeContainer.Error111, method.GetSignatureForError ());
6265 public override bool IsUsed
6275 public new Location Location {
6277 return base.Location;
6282 // Represents header string for documentation comment.
6284 public override string DocCommentHeader {
6285 get { throw new InvalidOperationException ("Unexpected attempt to get doc comment from " + this.GetType () + "."); }
6291 // Properties and Indexers both generate PropertyBuilders, we use this to share
6292 // their common bits.
6294 abstract public class PropertyBase : MethodCore {
6296 public class GetMethod : PropertyMethod
6298 static string[] attribute_targets = new string [] { "method", "return" };
6300 public GetMethod (MethodCore method):
6301 base (method, "get_")
6305 public GetMethod (MethodCore method, Accessor accessor):
6306 base (method, accessor, "get_")
6310 public override MethodBuilder Define (DeclSpace parent)
6312 base.Define (parent);
6314 method_data = new MethodData (method, ModFlags, flags, this);
6316 if (!method_data.Define (parent))
6319 return method_data.MethodBuilder;
6322 public override Type ReturnType {
6324 return method.MemberType;
6328 public override Parameters ParameterInfo {
6330 return Parameters.EmptyReadOnlyParameters;
6334 public override string[] ValidAttributeTargets {
6336 return attribute_targets;
6341 public class SetMethod : PropertyMethod {
6343 static string[] attribute_targets = new string [] { "method", "param", "return" };
6344 ImplicitParameter param_attr;
6345 protected Parameters parameters;
6347 public SetMethod (MethodCore method):
6348 base (method, "set_")
6352 public SetMethod (MethodCore method, Accessor accessor):
6353 base (method, accessor, "set_")
6357 protected override void ApplyToExtraTarget(Attribute a, CustomAttributeBuilder cb)
6359 if (a.Target == AttributeTargets.Parameter) {
6360 if (param_attr == null)
6361 param_attr = new ImplicitParameter (method_data.MethodBuilder);
6363 param_attr.ApplyAttributeBuilder (a, cb);
6367 base.ApplyAttributeBuilder (a, cb);
6370 public override Parameters ParameterInfo {
6376 protected virtual void DefineParameters ()
6378 parameters = new Parameters (
6379 new Parameter[] { new Parameter (method.MemberType, "value", Parameter.Modifier.NONE, null, Location) },
6380 new Type[] { method.MemberType });
6383 public override MethodBuilder Define (DeclSpace parent)
6385 DefineParameters ();
6389 base.Define (parent);
6391 method_data = new MethodData (method, ModFlags, flags, this);
6393 if (!method_data.Define (parent))
6396 return method_data.MethodBuilder;
6399 public override Type ReturnType {
6401 return TypeManager.void_type;
6405 public override string[] ValidAttributeTargets {
6407 return attribute_targets;
6412 static string[] attribute_targets = new string [] { "property" };
6414 public abstract class PropertyMethod : AbstractPropertyEventMethod
6416 protected readonly MethodCore method;
6417 protected MethodAttributes flags;
6419 ArrayList anonymous_methods;
6422 public PropertyMethod (MethodCore method, string prefix)
6423 : base (method, prefix)
6425 this.method = method;
6428 public PropertyMethod (MethodCore method, Accessor accessor,
6430 : base (method, accessor, prefix)
6432 this.method = method;
6433 this.ModFlags = accessor.ModFlags;
6434 yields = accessor.Yields;
6435 anonymous_methods = accessor.AnonymousMethods;
6437 if (accessor.ModFlags != 0 && RootContext.Version == LanguageVersion.ISO_1) {
6438 Report.FeatureIsNotStandardized (Location, "access modifiers on properties");
6442 public override Iterator Iterator {
6443 get { return iterator; }
6446 public override AttributeTargets AttributeTargets {
6448 return AttributeTargets.Method;
6452 public override bool IsClsComplianceRequired ()
6454 return method.IsClsComplianceRequired ();
6457 public bool ResolveMembers ()
6459 TypeContainer container = ((TypeContainer) Parent).PartialContainer;
6462 iterator = Iterator.CreateIterator (
6463 this, container, null, ModFlags);
6465 if (iterator == null)
6469 if (anonymous_methods != null) {
6470 foreach (AnonymousMethodExpression ame in anonymous_methods) {
6471 if (!ame.CreateAnonymousHelpers ())
6479 public virtual MethodBuilder Define (DeclSpace parent)
6481 if (!method.CheckAbstractAndExtern (block != null))
6484 TypeContainer container = parent.PartialContainer;
6487 // Check for custom access modifier
6489 if (ModFlags == 0) {
6490 ModFlags = method.ModFlags;
6491 flags = method.flags;
6493 if (container.Kind == Kind.Interface)
6494 Report.Error (275, Location, "`{0}': accessibility modifiers may not be used on accessors in an interface",
6495 GetSignatureForError ());
6497 if ((method.ModFlags & Modifiers.ABSTRACT) != 0 && (ModFlags & Modifiers.PRIVATE) != 0) {
6498 Report.Error (442, Location, "`{0}': abstract properties cannot have private accessors", GetSignatureForError ());
6501 CheckModifiers (ModFlags);
6502 ModFlags |= (method.ModFlags & (~Modifiers.Accessibility));
6503 ModFlags |= Modifiers.PROPERTY_CUSTOM;
6504 flags = Modifiers.MethodAttr (ModFlags);
6505 flags |= (method.flags & (~MethodAttributes.MemberAccessMask));
6511 public bool HasCustomAccessModifier
6514 return (ModFlags & Modifiers.PROPERTY_CUSTOM) != 0;
6518 public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
6520 return new EmitContext (method,
6521 ds, method.ds, method.Location, ig, ReturnType,
6522 method.ModFlags, false);
6525 public override ObsoleteAttribute GetObsoleteAttribute ()
6527 return method.GetObsoleteAttribute ();
6530 public override string GetSignatureForError()
6532 return method.GetSignatureForError () + '.' + prefix.Substring (0, 3);
6535 void CheckModifiers (int modflags)
6538 int mflags = method.ModFlags & Modifiers.Accessibility;
6540 if ((mflags & Modifiers.PUBLIC) != 0) {
6541 flags |= Modifiers.PROTECTED | Modifiers.INTERNAL | Modifiers.PRIVATE;
6543 else if ((mflags & Modifiers.PROTECTED) != 0) {
6544 if ((mflags & Modifiers.INTERNAL) != 0)
6545 flags |= Modifiers.PROTECTED | Modifiers.INTERNAL;
6547 flags |= Modifiers.PRIVATE;
6549 else if ((mflags & Modifiers.INTERNAL) != 0)
6550 flags |= Modifiers.PRIVATE;
6552 if ((mflags == modflags) || (modflags & (~flags)) != 0) {
6553 Report.Error (273, Location,
6554 "The accessibility modifier of the `{0}' accessor must be more restrictive than the modifier of the property or indexer `{1}'",
6555 GetSignatureForError (), method.GetSignatureForError ());
6559 public override bool MarkForDuplicationCheck ()
6561 caching_flags |= Flags.TestMethodDuplication;
6566 public PropertyMethod Get, Set;
6567 public PropertyBuilder PropertyBuilder;
6568 public MethodBuilder GetBuilder, SetBuilder;
6570 protected EmitContext ec;
6572 public PropertyBase (DeclSpace parent, Expression type, int mod_flags,
6573 int allowed_mod, bool is_iface, MemberName name,
6574 Parameters parameters, Attributes attrs)
6575 : base (parent, null, type, mod_flags, allowed_mod, is_iface, name,
6580 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
6582 if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
6583 a.Error_InvalidSecurityParent ();
6587 PropertyBuilder.SetCustomAttribute (cb);
6590 public override AttributeTargets AttributeTargets {
6592 return AttributeTargets.Property;
6596 public override bool Define ()
6601 if (!IsTypePermitted ())
6607 protected override bool DoDefine ()
6609 if (!base.DoDefine ())
6613 // Accessors modifiers check
6615 if (Get.ModFlags != 0 && Set.ModFlags != 0) {
6616 Report.Error (274, Location, "`{0}': Cannot specify accessibility modifiers for both accessors of the property or indexer",
6617 GetSignatureForError ());
6621 if ((Get.IsDummy || Set.IsDummy)
6622 && (Get.ModFlags != 0 || Set.ModFlags != 0) && (ModFlags & Modifiers.OVERRIDE) == 0) {
6623 Report.Error (276, Location,
6624 "`{0}': accessibility modifiers on accessors may only be used if the property or indexer has both a get and a set accessor",
6625 GetSignatureForError ());
6629 if (MemberType.IsAbstract && MemberType.IsSealed) {
6630 Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
6634 ec = new EmitContext (this, Parent, Location, null, MemberType, ModFlags);
6638 protected override bool CheckForDuplications ()
6640 ArrayList ar = Parent.PartialContainer.Indexers;
6642 int arLen = ar.Count;
6644 for (int i = 0; i < arLen; i++) {
6645 Indexer m = (Indexer) ar [i];
6646 if (IsDuplicateImplementation (m))
6651 ar = Parent.PartialContainer.Properties;
6653 int arLen = ar.Count;
6655 for (int i = 0; i < arLen; i++) {
6656 Property m = (Property) ar [i];
6657 if (IsDuplicateImplementation (m))
6665 // TODO: rename to Resolve......
6666 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
6668 PropertyInfo base_property = Parent.PartialContainer.BaseCache.FindMemberToOverride (
6669 Parent.TypeBuilder, Name, ParameterTypes, null, true) as PropertyInfo;
6671 if (base_property == null)
6674 base_ret_type = base_property.PropertyType;
6675 MethodInfo get_accessor = base_property.GetGetMethod (true);
6676 MethodInfo set_accessor = base_property.GetSetMethod (true);
6677 MethodAttributes get_accessor_access, set_accessor_access;
6679 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
6680 if (Get != null && !Get.IsDummy && get_accessor == null) {
6681 Report.SymbolRelatedToPreviousError (base_property);
6682 Report.Error (545, Location, "`{0}.get': cannot override because `{1}' does not have an overridable get accessor", GetSignatureForError (), TypeManager.GetFullNameSignature (base_property));
6685 if (Set != null && !Set.IsDummy && set_accessor == null) {
6686 Report.SymbolRelatedToPreviousError (base_property);
6687 Report.Error (546, Location, "`{0}.set': cannot override because `{1}' does not have an overridable set accessor", GetSignatureForError (), TypeManager.GetFullNameSignature (base_property));
6692 // Check base class accessors access
6695 // TODO: rewrite to reuse Get|Set.CheckAccessModifiers and share code there
6696 get_accessor_access = set_accessor_access = 0;
6697 if ((ModFlags & Modifiers.NEW) == 0) {
6698 if (get_accessor != null) {
6699 MethodAttributes get_flags = Modifiers.MethodAttr (Get.ModFlags != 0 ? Get.ModFlags : ModFlags);
6700 get_accessor_access = (get_accessor.Attributes & MethodAttributes.MemberAccessMask);
6702 if (!Get.IsDummy && !CheckAccessModifiers (get_flags & MethodAttributes.MemberAccessMask, get_accessor_access, get_accessor))
6703 Error_CannotChangeAccessModifiers (get_accessor, get_accessor_access, ".get");
6706 if (set_accessor != null) {
6707 MethodAttributes set_flags = Modifiers.MethodAttr (Set.ModFlags != 0 ? Set.ModFlags : ModFlags);
6708 set_accessor_access = (set_accessor.Attributes & MethodAttributes.MemberAccessMask);
6710 if (!Set.IsDummy && !CheckAccessModifiers (set_flags & MethodAttributes.MemberAccessMask, set_accessor_access, set_accessor))
6711 Error_CannotChangeAccessModifiers (set_accessor, set_accessor_access, ".set");
6716 // Get the less restrictive access
6718 return get_accessor_access > set_accessor_access ? get_accessor : set_accessor;
6721 public override void Emit ()
6724 // The PropertyBuilder can be null for explicit implementations, in that
6725 // case, we do not actually emit the ".property", so there is nowhere to
6726 // put the attribute
6728 if (PropertyBuilder != null && OptAttributes != null)
6729 OptAttributes.Emit ();
6741 /// Tests whether accessors are not in collision with some method (CS0111)
6743 public bool AreAccessorsDuplicateImplementation (MethodCore mc)
6745 return Get.IsDuplicateImplementation (mc) || Set.IsDuplicateImplementation (mc);
6748 public override bool IsUsed
6754 return Get.IsUsed | Set.IsUsed;
6758 protected override void SetMemberName (MemberName new_name)
6760 base.SetMemberName (new_name);
6762 Get.UpdateName (this);
6763 Set.UpdateName (this);
6766 public override string[] ValidAttributeTargets {
6768 return attribute_targets;
6773 // Represents header string for documentation comment.
6775 public override string DocCommentHeader {
6776 get { return "P:"; }
6780 public class Property : PropertyBase {
6781 const int AllowedModifiers =
6784 Modifiers.PROTECTED |
6785 Modifiers.INTERNAL |
6789 Modifiers.OVERRIDE |
6790 Modifiers.ABSTRACT |
6793 Modifiers.METHOD_YIELDS |
6796 const int AllowedInterfaceModifiers =
6799 public Property (DeclSpace parent, Expression type, int mod, bool is_iface,
6800 MemberName name, Attributes attrs, Accessor get_block,
6802 : base (parent, type, mod,
6803 is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
6804 is_iface, name, Parameters.EmptyReadOnlyParameters, attrs)
6806 if (get_block == null)
6807 Get = new GetMethod (this);
6809 Get = new GetMethod (this, get_block);
6811 if (set_block == null)
6812 Set = new SetMethod (this);
6814 Set = new SetMethod (this, set_block);
6817 public override bool Define ()
6819 if (!DoDefineBase ())
6822 if (!base.Define ())
6828 flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
6831 GetBuilder = Get.Define (Parent);
6832 if (GetBuilder == null)
6836 SetBuilder = Set.Define (Parent);
6838 if (SetBuilder == null)
6842 // FIXME - PropertyAttributes.HasDefault ?
6844 PropertyBuilder = Parent.TypeBuilder.DefineProperty (
6845 MemberName.ToString (), PropertyAttributes.None, MemberType, null);
6848 PropertyBuilder.SetGetMethod (GetBuilder);
6851 PropertyBuilder.SetSetMethod (SetBuilder);
6853 TypeManager.RegisterProperty (PropertyBuilder, this);
6859 /// Gigantic workaround for lameness in SRE follows :
6860 /// This class derives from EventInfo and attempts to basically
6861 /// wrap around the EventBuilder so that FindMembers can quickly
6862 /// return this in it search for members
6864 public class MyEventBuilder : EventInfo {
6867 // We use this to "point" to our Builder which is
6868 // not really a MemberInfo
6870 EventBuilder MyBuilder;
6873 // We "catch" and wrap these methods
6875 MethodInfo raise, remove, add;
6877 EventAttributes attributes;
6878 Type declaring_type, reflected_type, event_type;
6883 public MyEventBuilder (Event ev, TypeBuilder type_builder, string name, EventAttributes event_attr, Type event_type)
6885 MyBuilder = type_builder.DefineEvent (name, event_attr, event_type);
6887 // And now store the values in our own fields.
6889 declaring_type = type_builder;
6891 reflected_type = type_builder;
6893 attributes = event_attr;
6896 this.event_type = event_type;
6900 // Methods that you have to override. Note that you only need
6901 // to "implement" the variants that take the argument (those are
6902 // the "abstract" methods, the others (GetAddMethod()) are
6905 public override MethodInfo GetAddMethod (bool nonPublic)
6910 public override MethodInfo GetRemoveMethod (bool nonPublic)
6915 public override MethodInfo GetRaiseMethod (bool nonPublic)
6921 // These methods make "MyEventInfo" look like a Builder
6923 public void SetRaiseMethod (MethodBuilder raiseMethod)
6925 raise = raiseMethod;
6926 MyBuilder.SetRaiseMethod (raiseMethod);
6929 public void SetRemoveOnMethod (MethodBuilder removeMethod)
6931 remove = removeMethod;
6932 MyBuilder.SetRemoveOnMethod (removeMethod);
6935 public void SetAddOnMethod (MethodBuilder addMethod)
6938 MyBuilder.SetAddOnMethod (addMethod);
6941 public void SetCustomAttribute (CustomAttributeBuilder cb)
6943 MyBuilder.SetCustomAttribute (cb);
6946 public override object [] GetCustomAttributes (bool inherit)
6948 // FIXME : There's nothing which can be seemingly done here because
6949 // we have no way of getting at the custom attribute objects of the
6954 public override object [] GetCustomAttributes (Type t, bool inherit)
6956 // FIXME : Same here !
6960 public override bool IsDefined (Type t, bool b)
6965 public override EventAttributes Attributes {
6971 public override string Name {
6977 public override Type DeclaringType {
6979 return declaring_type;
6983 public override Type ReflectedType {
6985 return reflected_type;
6989 public Type EventType {
6995 public void SetUsed ()
6997 if (my_event != null) {
6998 my_event.SetAssigned ();
6999 my_event.SetMemberIsUsed ();
7005 /// For case when event is declared like property (with add and remove accessors).
7007 public class EventProperty: Event {
7009 static string[] attribute_targets = new string [] { "event" }; // "property" target was disabled for 2.0 version
7011 public EventProperty (DeclSpace parent, Expression type, int mod_flags,
7012 bool is_iface, MemberName name,
7013 Attributes attrs, Accessor add, Accessor remove)
7014 : base (parent, type, mod_flags, is_iface, name, attrs)
7016 Add = new AddDelegateMethod (this, add);
7017 Remove = new RemoveDelegateMethod (this, remove);
7019 // For this event syntax we don't report error CS0067
7020 // because it is hard to do it.
7024 public override string[] ValidAttributeTargets {
7026 return attribute_targets;
7032 /// Event is declared like field.
7034 public class EventField : Event {
7036 static string[] attribute_targets = new string [] { "event", "field", "method" };
7037 static string[] attribute_targets_interface = new string[] { "event", "method" };
7039 public EventField (DeclSpace parent, Expression type, int mod_flags,
7040 bool is_iface, MemberName name,
7042 : base (parent, type, mod_flags, is_iface, name, attrs)
7044 Add = new AddDelegateMethod (this);
7045 Remove = new RemoveDelegateMethod (this);
7048 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
7050 if (a.Target == AttributeTargets.Field) {
7051 FieldBuilder.SetCustomAttribute (cb);
7055 if (a.Target == AttributeTargets.Method) {
7056 int errors = Report.Errors;
7057 Add.ApplyAttributeBuilder (a, cb);
7058 if (errors == Report.Errors)
7059 Remove.ApplyAttributeBuilder (a, cb);
7063 base.ApplyAttributeBuilder (a, cb);
7066 public override bool Define()
7068 if (!base.Define ())
7071 if (initializer != null) {
7072 if (((ModFlags & Modifiers.ABSTRACT) != 0)) {
7073 Report.Error (74, Location, "`{0}': abstract event cannot have an initializer",
7074 GetSignatureForError ());
7082 public override string[] ValidAttributeTargets {
7084 return IsInterface ? attribute_targets_interface : attribute_targets;
7089 public abstract class Event : FieldBase {
7091 protected sealed class AddDelegateMethod: DelegateMethod
7094 public AddDelegateMethod (Event method):
7095 base (method, "add_")
7099 public AddDelegateMethod (Event method, Accessor accessor):
7100 base (method, accessor, "add_")
7104 protected override MethodInfo DelegateMethodInfo {
7106 return TypeManager.delegate_combine_delegate_delegate;
7112 protected sealed class RemoveDelegateMethod: DelegateMethod
7114 public RemoveDelegateMethod (Event method):
7115 base (method, "remove_")
7119 public RemoveDelegateMethod (Event method, Accessor accessor):
7120 base (method, accessor, "remove_")
7124 protected override MethodInfo DelegateMethodInfo {
7126 return TypeManager.delegate_remove_delegate_delegate;
7132 public abstract class DelegateMethod : AbstractPropertyEventMethod
7134 protected readonly Event method;
7135 ImplicitParameter param_attr;
7137 static string[] attribute_targets = new string [] { "method", "param", "return" };
7139 public DelegateMethod (Event method, string prefix)
7140 : base (method, prefix)
7142 this.method = method;
7145 public DelegateMethod (Event method, Accessor accessor, string prefix)
7146 : base (method, accessor, prefix)
7148 this.method = method;
7151 public override Iterator Iterator {
7152 get { return null; }
7155 protected override void ApplyToExtraTarget(Attribute a, CustomAttributeBuilder cb)
7157 if (a.Target == AttributeTargets.Parameter) {
7158 if (param_attr == null)
7159 param_attr = new ImplicitParameter (method_data.MethodBuilder);
7161 param_attr.ApplyAttributeBuilder (a, cb);
7165 base.ApplyAttributeBuilder (a, cb);
7168 public override AttributeTargets AttributeTargets {
7170 return AttributeTargets.Method;
7174 public override bool IsClsComplianceRequired ()
7176 return method.IsClsComplianceRequired ();
7179 public MethodBuilder Define (DeclSpace parent)
7181 method_data = new MethodData (method, method.ModFlags,
7182 method.flags | MethodAttributes.HideBySig | MethodAttributes.SpecialName, this);
7184 if (!method_data.Define (parent))
7187 MethodBuilder mb = method_data.MethodBuilder;
7188 ParameterInfo.ApplyAttributes (mb);
7193 protected override void EmitMethod (DeclSpace parent)
7195 if (block != null) {
7196 base.EmitMethod (parent);
7200 if ((method.ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
7203 ILGenerator ig = method_data.MethodBuilder.GetILGenerator ();
7204 FieldInfo field_info = (FieldInfo)method.FieldBuilder;
7206 method_data.MethodBuilder.SetImplementationFlags (MethodImplAttributes.Synchronized);
7207 if ((method.ModFlags & Modifiers.STATIC) != 0) {
7208 ig.Emit (OpCodes.Ldsfld, field_info);
7209 ig.Emit (OpCodes.Ldarg_0);
7210 ig.Emit (OpCodes.Call, DelegateMethodInfo);
7211 ig.Emit (OpCodes.Castclass, method.MemberType);
7212 ig.Emit (OpCodes.Stsfld, field_info);
7214 ig.Emit (OpCodes.Ldarg_0);
7215 ig.Emit (OpCodes.Ldarg_0);
7216 ig.Emit (OpCodes.Ldfld, field_info);
7217 ig.Emit (OpCodes.Ldarg_1);
7218 ig.Emit (OpCodes.Call, DelegateMethodInfo);
7219 ig.Emit (OpCodes.Castclass, method.MemberType);
7220 ig.Emit (OpCodes.Stfld, field_info);
7222 ig.Emit (OpCodes.Ret);
7225 protected abstract MethodInfo DelegateMethodInfo { get; }
7227 public override Type ReturnType {
7229 return TypeManager.void_type;
7233 public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
7235 return new EmitContext (
7236 ds, method.Parent, Location, ig, ReturnType,
7237 method.ModFlags, false);
7240 public override ObsoleteAttribute GetObsoleteAttribute ()
7242 return method.GetObsoleteAttribute ();
7245 public override string[] ValidAttributeTargets {
7247 return attribute_targets;
7251 public override Parameters ParameterInfo {
7253 return method.parameters;
7260 const int AllowedModifiers =
7263 Modifiers.PROTECTED |
7264 Modifiers.INTERNAL |
7269 Modifiers.OVERRIDE |
7273 const int AllowedInterfaceModifiers =
7276 public DelegateMethod Add, Remove;
7277 public MyEventBuilder EventBuilder;
7278 public MethodBuilder AddBuilder, RemoveBuilder;
7279 Parameters parameters;
7281 protected Event (DeclSpace parent, Expression type, int mod_flags,
7282 bool is_iface, MemberName name, Attributes attrs)
7283 : base (parent, type, mod_flags,
7284 is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
7287 IsInterface = is_iface;
7290 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
7292 if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
7293 a.Error_InvalidSecurityParent ();
7297 EventBuilder.SetCustomAttribute (cb);
7300 public bool AreAccessorsDuplicateImplementation (MethodCore mc)
7302 return Add.IsDuplicateImplementation (mc) || Remove.IsDuplicateImplementation (mc);
7305 public override AttributeTargets AttributeTargets {
7307 return AttributeTargets.Event;
7311 public override bool Define ()
7313 EventAttributes e_attr;
7314 e_attr = EventAttributes.None;
7316 if (!DoDefineBase ())
7322 if (!TypeManager.IsDelegateType (MemberType)) {
7323 Report.Error (66, Location, "`{0}': event must be of a delegate type", GetSignatureForError ());
7327 parameters = new Parameters (
7328 new Parameter[] { new Parameter (MemberType, "value", Parameter.Modifier.NONE, null, Location) },
7329 new Type[] { MemberType } );
7335 // Now define the accessors
7338 AddBuilder = Add.Define (Parent);
7339 if (AddBuilder == null)
7342 RemoveBuilder = Remove.Define (Parent);
7343 if (RemoveBuilder == null)
7346 EventBuilder = new MyEventBuilder (this, Parent.TypeBuilder, Name, e_attr, MemberType);
7348 if (Add.Block == null && Remove.Block == null && !IsInterface) {
7349 FieldBuilder = Parent.TypeBuilder.DefineField (
7351 FieldAttributes.Private | ((ModFlags & Modifiers.STATIC) != 0 ? FieldAttributes.Static : 0));
7352 TypeManager.RegisterPrivateFieldOfEvent (
7353 (EventInfo) EventBuilder, FieldBuilder);
7354 TypeManager.RegisterFieldBase (FieldBuilder, this);
7357 EventBuilder.SetAddOnMethod (AddBuilder);
7358 EventBuilder.SetRemoveOnMethod (RemoveBuilder);
7360 TypeManager.RegisterEvent (EventBuilder, AddBuilder, RemoveBuilder);
7364 protected override bool CheckBase ()
7366 if (!base.CheckBase ())
7369 if (conflict_symbol != null && (ModFlags & Modifiers.NEW) == 0) {
7370 if (!(conflict_symbol is EventInfo)) {
7371 Report.SymbolRelatedToPreviousError (conflict_symbol);
7372 Report.Error (72, Location, "Event `{0}' can override only event", GetSignatureForError ());
7380 public override void Emit ()
7382 if (OptAttributes != null) {
7383 OptAttributes.Emit ();
7387 Remove.Emit (Parent);
7392 public override string GetSignatureForError ()
7394 return base.GetSignatureForError ();
7398 // Represents header string for documentation comment.
7400 public override string DocCommentHeader {
7401 get { return "E:"; }
7406 public class Indexer : PropertyBase {
7408 class GetIndexerMethod : GetMethod
7410 public GetIndexerMethod (MethodCore method):
7415 public GetIndexerMethod (MethodCore method, Accessor accessor):
7416 base (method, accessor)
7420 public override Parameters ParameterInfo {
7422 return method.ParameterInfo;
7427 class SetIndexerMethod: SetMethod
7429 public SetIndexerMethod (MethodCore method):
7434 public SetIndexerMethod (MethodCore method, Accessor accessor):
7435 base (method, accessor)
7439 protected override void DefineParameters ()
7441 parameters = Parameters.MergeGenerated (method.Parameters,
7442 new Parameter (method.MemberType, "value", Parameter.Modifier.NONE, null, method.Location));
7446 const int AllowedModifiers =
7449 Modifiers.PROTECTED |
7450 Modifiers.INTERNAL |
7454 Modifiers.OVERRIDE |
7459 const int AllowedInterfaceModifiers =
7463 public Indexer (DeclSpace parent, Expression type, MemberName name, int mod,
7464 bool is_iface, Parameters parameters, Attributes attrs,
7465 Accessor get_block, Accessor set_block)
7466 : base (parent, type, mod,
7467 is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
7468 is_iface, name, parameters, attrs)
7470 if (get_block == null)
7471 Get = new GetIndexerMethod (this);
7473 Get = new GetIndexerMethod (this, get_block);
7475 if (set_block == null)
7476 Set = new SetIndexerMethod (this);
7478 Set = new SetIndexerMethod (this, set_block);
7481 public override bool Define ()
7483 if (!DoDefineBase ())
7486 if (!base.Define ())
7489 if (MemberType == TypeManager.void_type) {
7490 Report.Error (620, Location, "Indexers cannot have void type");
7494 if (OptAttributes != null) {
7495 Attribute indexer_attr = OptAttributes.Search (TypeManager.indexer_name_type);
7496 if (indexer_attr != null) {
7497 // Remove the attribute from the list because it is not emitted
7498 OptAttributes.Attrs.Remove (indexer_attr);
7500 string name = indexer_attr.GetIndexerAttributeValue ();
7506 if (IsExplicitImpl) {
7507 Report.Error (415, indexer_attr.Location,
7508 "The `IndexerName' attribute is valid only on an " +
7509 "indexer that is not an explicit interface member declaration");
7513 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
7514 Report.Error (609, indexer_attr.Location,
7515 "Cannot set the `IndexerName' attribute on an indexer marked override");
7521 if (InterfaceType != null) {
7522 string base_IndexerName = TypeManager.IndexerPropertyName (InterfaceType);
7523 if (base_IndexerName != Name)
7524 ShortName = base_IndexerName;
7527 if (!Parent.PartialContainer.AddMember (this) ||
7528 !Parent.PartialContainer.AddMember (Get) || !Parent.PartialContainer.AddMember (Set))
7534 flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
7536 GetBuilder = Get.Define (Parent);
7537 if (GetBuilder == null)
7541 // Setup iterator if we are one
7543 if ((ModFlags & Modifiers.METHOD_YIELDS) != 0){
7544 Iterator iterator = Iterator.CreateIterator (
7545 Get, (TypeContainer) Parent, null, ModFlags);
7547 if (iterator == null)
7552 SetBuilder = Set.Define (Parent);
7554 if (SetBuilder == null)
7559 // Now name the parameters
7561 Parameter [] p = Parameters.FixedParameters;
7563 // TODO: should be done in parser and it needs to do cycle
7564 if ((p [0].ModFlags & Parameter.Modifier.ISBYREF) != 0) {
7565 Report.Error (631, Location, "ref and out are not valid in this context");
7570 PropertyBuilder = Parent.TypeBuilder.DefineProperty (
7571 Name, PropertyAttributes.None, MemberType, ParameterTypes);
7574 PropertyBuilder.SetGetMethod (GetBuilder);
7577 PropertyBuilder.SetSetMethod (SetBuilder);
7579 TypeManager.RegisterIndexer (PropertyBuilder, GetBuilder, SetBuilder, ParameterTypes);
7584 public override string GetSignatureForError ()
7586 StringBuilder sb = new StringBuilder (Parent.GetSignatureForError ());
7587 if (MemberName.Left != null) {
7589 sb.Append (MemberName.Left);
7592 sb.Append (".this");
7593 sb.Append (Parameters.GetSignatureForError ().Replace ('(', '[').Replace (')', ']'));
7594 return sb.ToString ();
7597 public override bool MarkForDuplicationCheck ()
7599 caching_flags |= Flags.TestMethodDuplication;
7604 public class Operator : MethodOrOperator, IAnonymousHost {
7606 const int AllowedModifiers =
7612 public enum OpType : byte {
7622 // Unary and Binary operators
7645 // Implicit and Explicit
7649 // Just because of enum
7653 public readonly OpType OperatorType;
7655 public Operator (DeclSpace parent, OpType type, Expression ret_type,
7656 int mod_flags, Parameters parameters,
7657 ToplevelBlock block, Attributes attrs, Location loc)
7658 : base (parent, null, ret_type, mod_flags, AllowedModifiers, false,
7659 new MemberName ("op_" + type, loc), attrs, parameters)
7661 OperatorType = type;
7665 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
7667 if (a.Type == TypeManager.conditional_attribute_type) {
7668 Error_ConditionalAttributeIsNotValid ();
7672 base.ApplyAttributeBuilder (a, cb);
7675 protected override bool CheckForDuplications ()
7677 ArrayList ar = Parent.PartialContainer.Operators;
7679 int arLen = ar.Count;
7681 for (int i = 0; i < arLen; i++) {
7682 Operator o = (Operator) ar [i];
7683 if (IsDuplicateImplementation (o))
7688 ar = Parent.PartialContainer.Methods;
7690 int arLen = ar.Count;
7692 for (int i = 0; i < arLen; i++) {
7693 Method m = (Method) ar [i];
7694 if (IsDuplicateImplementation (m))
7702 public override bool Define ()
7704 const int RequiredModifiers = Modifiers.PUBLIC | Modifiers.STATIC;
7705 if ((ModFlags & RequiredModifiers) != RequiredModifiers){
7706 Report.Error (558, Location, "User-defined operator `{0}' must be declared static and public", GetSignatureForError ());
7710 if (!base.Define ())
7713 if (MemberType == TypeManager.void_type) {
7714 Report.Error (590, Location, "User-defined operators cannot return void");
7718 Type declaring_type = MethodData.DeclaringType;
7719 Type return_type = MemberType;
7720 Type first_arg_type = ParameterTypes [0];
7722 // Rules for conversion operators
7724 if (OperatorType == OpType.Implicit || OperatorType == OpType.Explicit) {
7725 if (first_arg_type == return_type && first_arg_type == declaring_type){
7726 Report.Error (555, Location,
7727 "User-defined operator cannot take an object of the enclosing type and convert to an object of the enclosing type");
7731 if ((first_arg_type != declaring_type) && (return_type != declaring_type) &&
7732 !TypeManager.IsNullableTypeOf (first_arg_type, declaring_type) &&
7733 !TypeManager.IsNullableTypeOf (return_type, declaring_type)) {
7736 "User-defined conversion must convert to or from the " +
7741 if (first_arg_type.IsInterface || return_type.IsInterface){
7742 Report.Error (552, Location, "User-defined conversion `{0}' cannot convert to or from an interface type",
7743 GetSignatureForError ());
7747 if (first_arg_type.IsSubclassOf (return_type) || return_type.IsSubclassOf (first_arg_type)) {
7748 if (declaring_type.IsSubclassOf (return_type) || declaring_type.IsSubclassOf (first_arg_type)) {
7749 Report.Error (553, Location, "User-defined conversion `{0}' cannot convert to or from base class",
7750 GetSignatureForError ());
7753 Report.Error (554, Location, "User-defined conversion `{0}' cannot convert to or from derived class",
7754 GetSignatureForError ());
7757 } else if (OperatorType == OpType.LeftShift || OperatorType == OpType.RightShift) {
7758 if (first_arg_type != declaring_type || ParameterTypes [1] != TypeManager.int32_type) {
7759 Report.Error (564, Location, "Overloaded shift operator must have the type of the first operand be the containing type, and the type of the second operand must be int");
7762 } else if (Parameters.Count == 1) {
7763 // Checks for Unary operators
7765 if (OperatorType == OpType.Increment || OperatorType == OpType.Decrement) {
7766 if (return_type != declaring_type && !TypeManager.IsSubclassOf (return_type, declaring_type)) {
7767 Report.Error (448, Location,
7768 "The return type for ++ or -- operator must be the containing type or derived from the containing type");
7771 if (first_arg_type != declaring_type) {
7773 559, Location, "The parameter type for ++ or -- operator must be the containing type");
7778 if (first_arg_type != declaring_type){
7781 "The parameter of a unary operator must be the " +
7786 if (OperatorType == OpType.True || OperatorType == OpType.False) {
7787 if (return_type != TypeManager.bool_type){
7790 "The return type of operator True or False " +
7797 // Checks for Binary operators
7799 if (first_arg_type != declaring_type &&
7800 ParameterTypes [1] != declaring_type){
7803 "One of the parameters of a binary operator must " +
7804 "be the containing type");
7812 protected override bool DoDefine ()
7814 if (!base.DoDefine ())
7817 flags |= MethodAttributes.SpecialName | MethodAttributes.HideBySig;
7821 public override void Emit ()
7825 Parameters.ApplyAttributes (MethodBuilder);
7828 // abstract or extern methods have no bodies
7830 if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
7834 if ((flags & MethodAttributes.PinvokeImpl) == 0)
7835 ec = CreateEmitContext (Parent, MethodBuilder.GetILGenerator ());
7837 ec = CreateEmitContext (Parent, null);
7839 SourceMethod source = SourceMethod.Create (Parent, MethodBuilder, Block);
7840 ec.EmitTopBlock (this, Block);
7843 source.CloseMethod ();
7848 // Operator cannot be override
7849 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
7854 public static string GetName (OpType ot)
7857 case OpType.LogicalNot:
7859 case OpType.OnesComplement:
7861 case OpType.Increment:
7863 case OpType.Decrement:
7869 case OpType.Addition:
7871 case OpType.Subtraction:
7873 case OpType.UnaryPlus:
7875 case OpType.UnaryNegation:
7877 case OpType.Multiply:
7879 case OpType.Division:
7881 case OpType.Modulus:
7883 case OpType.BitwiseAnd:
7885 case OpType.BitwiseOr:
7887 case OpType.ExclusiveOr:
7889 case OpType.LeftShift:
7891 case OpType.RightShift:
7893 case OpType.Equality:
7895 case OpType.Inequality:
7897 case OpType.GreaterThan:
7899 case OpType.LessThan:
7901 case OpType.GreaterThanOrEqual:
7903 case OpType.LessThanOrEqual:
7905 case OpType.Implicit:
7907 case OpType.Explicit:
7913 public static OpType GetOperatorType (string name)
7915 if (name.StartsWith ("op_")){
7916 for (int i = 0; i < Unary.oper_names.Length; ++i) {
7917 if (Unary.oper_names [i] == name)
7921 for (int i = 0; i < Binary.oper_names.Length; ++i) {
7922 if (Binary.oper_names [i] == name)
7929 public override string GetSignatureForError ()
7931 StringBuilder sb = new StringBuilder ();
7932 if (OperatorType == OpType.Implicit || OperatorType == OpType.Explicit) {
7933 sb.AppendFormat ("{0}.{1} operator {2}", Parent.GetSignatureForError (), GetName (OperatorType), Type.Type == null ? Type.ToString () : TypeManager.CSharpName (Type.Type));
7936 sb.AppendFormat ("{0}.operator {1}", Parent.GetSignatureForError (), GetName (OperatorType));
7939 sb.Append (Parameters.GetSignatureForError ());
7940 return sb.ToString ();
7945 // This is used to compare method signatures
7947 struct MethodSignature {
7949 public Type RetType;
7950 public Type [] Parameters;
7953 /// This delegate is used to extract methods which have the
7954 /// same signature as the argument
7956 public static MemberFilter method_signature_filter = new MemberFilter (MemberSignatureCompare);
7958 public MethodSignature (string name, Type ret_type, Type [] parameters)
7963 if (parameters == null)
7964 Parameters = Type.EmptyTypes;
7966 Parameters = parameters;
7969 public override string ToString ()
7972 if (Parameters.Length != 0){
7973 System.Text.StringBuilder sb = new System.Text.StringBuilder ();
7974 for (int i = 0; i < Parameters.Length; i++){
7975 sb.Append (Parameters [i]);
7976 if (i+1 < Parameters.Length)
7979 pars = sb.ToString ();
7982 return String.Format ("{0} {1} ({2})", RetType, Name, pars);
7985 public override int GetHashCode ()
7987 return Name.GetHashCode ();
7990 public override bool Equals (Object o)
7992 MethodSignature other = (MethodSignature) o;
7994 if (other.Name != Name)
7997 if (other.RetType != RetType)
8000 if (Parameters == null){
8001 if (other.Parameters == null)
8006 if (other.Parameters == null)
8009 int c = Parameters.Length;
8010 if (other.Parameters.Length != c)
8013 for (int i = 0; i < c; i++)
8014 if (other.Parameters [i] != Parameters [i])
8020 static bool MemberSignatureCompare (MemberInfo m, object filter_criteria)
8022 MethodSignature sig = (MethodSignature) filter_criteria;
8024 if (m.Name != sig.Name)
8028 MethodInfo mi = m as MethodInfo;
8029 PropertyInfo pi = m as PropertyInfo;
8032 ReturnType = mi.ReturnType;
8033 else if (pi != null)
8034 ReturnType = pi.PropertyType;
8039 // we use sig.RetType == null to mean `do not check the
8040 // method return value.
8042 if (sig.RetType != null)
8043 if (ReturnType != sig.RetType)
8048 args = TypeManager.GetParameterData (mi).Types;
8050 args = TypeManager.GetArgumentTypes (pi);
8051 Type [] sigp = sig.Parameters;
8053 if (args.Length != sigp.Length)
8056 for (int i = args.Length; i > 0; ){
8058 if (args [i] != sigp [i])