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 (FieldBase 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 (MemberCore field, FieldInitializer expression)
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 (expression);
934 if (initialized_fields == null)
935 initialized_fields = new ArrayList (4);
937 initialized_fields.Add (expression);
942 // Emits the instance field initializers
944 public bool EmitFieldInitializers (EmitContext ec)
949 fields = initialized_static_fields;
951 fields = initialized_fields;
957 foreach (FieldInitializer f in fields) {
958 f.EmitStatement (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.GetSignatureForError ());
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[] inferred = new Type [CountTypeParameters];
1145 if (!TypeManager.MayBecomeEqualGenericInstances (iface, t, inferred, 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 FieldBase f = (FieldBase) 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 (FieldBase 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 Constant c = New.Constantify (f.Type.Type);
2257 Report.Warning (649, 4, f.Location, "Field `{0}' is never assigned to, and will always have its default value `{1}'",
2258 f.GetSignatureForError (), c == null ? "null" : c.AsString ());
2264 // TODO: move to ClassOrStruct
2265 void EmitConstructors ()
2267 if (instance_constructors == null)
2270 if (TypeBuilder.IsSubclassOf (TypeManager.attribute_type) && RootContext.VerifyClsCompliance && IsClsComplianceRequired ()) {
2271 bool has_compliant_args = false;
2273 foreach (Constructor c in instance_constructors) {
2276 if (has_compliant_args)
2279 has_compliant_args = c.HasCompliantArgs;
2281 if (!has_compliant_args)
2282 Report.Error (3015, Location, "`{0}' has no accessible constructors which use only CLS-compliant types", GetSignatureForError ());
2284 foreach (Constructor c in instance_constructors)
2290 /// Emits the code, this step is performed after all
2291 /// the types, enumerations, constructors
2293 public virtual void EmitType ()
2295 if (OptAttributes != null)
2296 OptAttributes.Emit ();
2300 int offset = CountTypeParameters - CurrentTypeParameters.Length;
2301 for (int i = offset; i < gen_params.Length; i++)
2302 CurrentTypeParameters [i - offset].EmitAttributes ();
2307 // Structs with no fields need to have at least one byte.
2308 // The right thing would be to set the PackingSize in a DefineType
2309 // but there are no functions that allow interfaces *and* the size to
2313 if (Kind == Kind.Struct && first_nonstatic_field == null){
2314 FieldBuilder fb = TypeBuilder.DefineField ("$PRIVATE$", TypeManager.byte_type,
2315 FieldAttributes.Private);
2317 if (HasExplicitLayout){
2318 object [] ctor_args = new object [1];
2321 CustomAttributeBuilder cba = new CustomAttributeBuilder (
2322 TypeManager.field_offset_attribute_ctor, ctor_args);
2323 fb.SetCustomAttribute (cba);
2329 EmitConstructors ();
2331 // Can not continue if constants are broken
2333 if (Report.Errors > 0)
2336 if (default_static_constructor != null)
2337 default_static_constructor.Emit ();
2339 if (methods != null){
2340 foreach (Method m in methods)
2344 if (operators != null)
2345 foreach (Operator o in operators)
2348 if (properties != null)
2349 foreach (Property p in properties)
2352 if (indexers != null){
2357 foreach (FieldBase f in fields)
2360 if (events != null){
2361 foreach (Event e in Events)
2365 if (delegates != null) {
2366 foreach (Delegate d in Delegates) {
2371 if (enums != null) {
2372 foreach (Enum e in enums) {
2377 if (pending != null)
2378 if (pending.VerifyPendingMethods ())
2381 if (Report.Errors > 0)
2384 if (compiler_generated != null) {
2385 foreach (CompilerGeneratedClass c in compiler_generated) {
2386 if (!c.DefineMembers ())
2387 throw new InternalErrorException ();
2389 foreach (CompilerGeneratedClass c in compiler_generated)
2394 public override void CloseType ()
2396 if ((caching_flags & Flags.CloseTypeCreated) != 0)
2400 caching_flags |= Flags.CloseTypeCreated;
2401 TypeBuilder.CreateType ();
2402 } catch (TypeLoadException){
2404 // This is fine, the code still created the type
2406 // Report.Warning (-20, "Exception while creating class: " + TypeBuilder.Name);
2407 // Console.WriteLine (e.Message);
2409 Console.WriteLine ("In type: " + Name);
2414 foreach (Enum en in Enums)
2418 foreach (TypeContainer tc in Types)
2419 if (tc.Kind == Kind.Struct)
2422 foreach (TypeContainer tc in Types)
2423 if (tc.Kind != Kind.Struct)
2427 if (Delegates != null)
2428 foreach (Delegate d in Delegates)
2431 if (CompilerGenerated != null)
2432 foreach (CompilerGeneratedClass c in CompilerGenerated)
2440 initialized_fields = null;
2441 initialized_static_fields = null;
2448 compiler_generated = null;
2449 default_constructor = null;
2450 default_static_constructor = null;
2452 OptAttributes = null;
2455 member_cache = null;
2459 // Performs the validation on a Method's modifiers (properties have
2460 // the same properties).
2462 public bool MethodModifiersValid (MemberCore mc)
2464 const int vao = (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE);
2465 const int va = (Modifiers.VIRTUAL | Modifiers.ABSTRACT);
2466 const int nv = (Modifiers.NEW | Modifiers.VIRTUAL);
2468 int flags = mc.ModFlags;
2471 // At most one of static, virtual or override
2473 if ((flags & Modifiers.STATIC) != 0){
2474 if ((flags & vao) != 0){
2475 Report.Error (112, mc.Location, "A static member `{0}' cannot be marked as override, virtual or abstract",
2476 mc.GetSignatureForError ());
2481 if (Kind == Kind.Struct){
2482 if ((flags & va) != 0){
2483 Modifiers.Error_InvalidModifier (mc.Location, "virtual or abstract");
2488 if ((flags & Modifiers.OVERRIDE) != 0 && (flags & nv) != 0){
2489 Report.Error (113, mc.Location, "A member `{0}' marked as override cannot be marked as new or virtual",
2490 mc.GetSignatureForError ());
2495 // If the declaration includes the abstract modifier, then the
2496 // declaration does not include static, virtual or extern
2498 if ((flags & Modifiers.ABSTRACT) != 0){
2499 if ((flags & Modifiers.EXTERN) != 0){
2501 180, mc.Location, "`{0}' cannot be both extern and abstract", mc.GetSignatureForError ());
2505 if ((flags & Modifiers.SEALED) != 0) {
2506 Report.Error (502, mc.Location, "`{0}' cannot be both abstract and sealed", mc.GetSignatureForError ());
2510 if ((flags & Modifiers.VIRTUAL) != 0){
2511 Report.Error (503, mc.Location, "The abstract method `{0}' cannot be marked virtual", mc.GetSignatureForError ());
2515 if ((ModFlags & Modifiers.ABSTRACT) == 0){
2516 Report.Error (513, mc.Location, "`{0}' is abstract but it is contained in nonabstract class", mc.GetSignatureForError ());
2521 if ((flags & Modifiers.PRIVATE) != 0){
2522 if ((flags & vao) != 0){
2523 Report.Error (621, mc.Location, "`{0}': virtual or abstract members cannot be private", mc.GetSignatureForError ());
2528 if ((flags & Modifiers.SEALED) != 0){
2529 if ((flags & Modifiers.OVERRIDE) == 0){
2530 Report.Error (238, mc.Location, "`{0}' cannot be sealed because it is not an override", mc.GetSignatureForError ());
2538 public Constructor DefaultStaticConstructor {
2539 get { return default_static_constructor; }
2542 protected override bool VerifyClsCompliance ()
2544 if (!base.VerifyClsCompliance ())
2549 Type base_type = TypeBuilder.BaseType;
2550 if (base_type != null && !AttributeTester.IsClsCompliant (base_type)) {
2551 Report.Error (3009, Location, "`{0}': base type `{1}' is not CLS-compliant", GetSignatureForError (), TypeManager.CSharpName (base_type));
2558 /// Checks whether container name is CLS Compliant
2560 void VerifyClsName ()
2562 Hashtable base_members = base_cache == null ?
2564 base_cache.GetPublicMembers ();
2565 Hashtable this_members = new Hashtable ();
2567 foreach (DictionaryEntry entry in defined_names) {
2568 MemberCore mc = (MemberCore)entry.Value;
2569 if (!mc.IsClsComplianceRequired ())
2572 string name = (string) entry.Key;
2573 string basename = name.Substring (name.LastIndexOf ('.') + 1);
2575 string lcase = basename.ToLower (System.Globalization.CultureInfo.InvariantCulture);
2576 object found = base_members [lcase];
2577 if (found == null) {
2578 found = this_members [lcase];
2579 if (found == null) {
2580 this_members.Add (lcase, mc);
2585 if ((mc.ModFlags & Modifiers.OVERRIDE) != 0)
2588 if (found is MemberInfo) {
2589 if (basename == ((MemberInfo) found).Name)
2591 Report.SymbolRelatedToPreviousError ((MemberInfo) found);
2593 Report.SymbolRelatedToPreviousError ((MemberCore) found);
2596 Report.Warning (3005, 1, mc.Location, "Identifier `{0}' differing only in case is not CLS-compliant", mc.GetSignatureForError ());
2598 Report.Error (3005, mc.Location, "Identifier `{0}' differing only in case is not CLS-compliant", mc.GetSignatureForError ());
2605 /// Performs checks for an explicit interface implementation. First it
2606 /// checks whether the `interface_type' is a base inteface implementation.
2607 /// Then it checks whether `name' exists in the interface type.
2609 public virtual bool VerifyImplements (InterfaceMemberBase mb)
2611 if (ifaces != null) {
2612 foreach (Type t in ifaces){
2613 if (t == mb.InterfaceType)
2618 Report.SymbolRelatedToPreviousError (mb.InterfaceType);
2619 Report.Error (540, mb.Location, "`{0}': containing type does not implement interface `{1}'",
2620 mb.GetSignatureForError (), TypeManager.CSharpName (mb.InterfaceType));
2624 public void Mark_HasEquals ()
2626 Methods.HasEquals = true;
2629 public void Mark_HasGetHashCode ()
2631 Methods.HasGetHashCode = true;
2638 string IMemberContainer.Name {
2644 Type IMemberContainer.Type {
2650 MemberCache IMemberContainer.MemberCache {
2652 return member_cache;
2656 bool IMemberContainer.IsInterface {
2658 return Kind == Kind.Interface;
2662 MemberList IMemberContainer.GetMembers (MemberTypes mt, BindingFlags bf)
2664 BindingFlags new_bf = bf | BindingFlags.DeclaredOnly;
2666 if (GenericType != null)
2667 return TypeManager.FindMembers (GenericType, mt, new_bf,
2670 return FindMembers (mt, new_bf, null, null);
2674 // Generates xml doc comments (if any), and if required,
2675 // handle warning report.
2677 internal override void GenerateDocComment (DeclSpace ds)
2679 DocUtil.GenerateTypeDocComment (this, ds);
2682 public override string DocCommentHeader {
2683 get { return "T:"; }
2686 public virtual MemberCache BaseCache {
2688 if (base_cache != null)
2690 if (TypeBuilder.BaseType != null)
2691 base_cache = TypeManager.LookupMemberCache (TypeBuilder.BaseType);
2692 if (TypeBuilder.IsInterface)
2693 base_cache = TypeManager.LookupBaseInterfacesCache (TypeBuilder);
2699 public abstract class ClassOrStruct : TypeContainer {
2700 ListDictionary declarative_security;
2702 public ClassOrStruct (NamespaceEntry ns, DeclSpace parent,
2703 MemberName name, Attributes attrs, Kind kind)
2704 : base (ns, parent, name, attrs, kind)
2708 protected override bool AddToContainer (MemberCore symbol, string name)
2710 if (name == MemberName.Name) {
2711 if (symbol is TypeParameter) {
2712 Report.Error (694, symbol.Location,
2713 "Type parameter `{0}' has same name as " +
2714 "containing type, or method", name);
2718 Report.SymbolRelatedToPreviousError (this);
2719 Report.Error (542, symbol.Location, "`{0}': member names cannot be the same as their enclosing type",
2720 symbol.GetSignatureForError ());
2724 return base.AddToContainer (symbol, name);
2727 public override void VerifyMembers ()
2729 base.VerifyMembers ();
2731 if ((events != null) && (RootContext.WarningLevel >= 3)) {
2732 foreach (Event e in events){
2733 if ((e.ModFlags & Modifiers.Accessibility) != Modifiers.PRIVATE)
2736 if ((e.caching_flags & Flags.IsUsed) == 0)
2737 Report.Warning (67, 3, e.Location, "The event `{0}' is never used", e.GetSignatureForError ());
2742 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
2744 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
2745 if (declarative_security == null)
2746 declarative_security = new ListDictionary ();
2748 a.ExtractSecurityPermissionSet (declarative_security);
2752 if (a.Type == TypeManager.struct_layout_attribute_type && a.GetLayoutKindValue () == LayoutKind.Explicit) {
2753 HasExplicitLayout = true;
2756 base.ApplyAttributeBuilder (a, cb);
2760 /// Defines the default constructors
2762 protected void DefineDefaultConstructor (bool is_static)
2764 // The default instance constructor is public
2765 // If the class is abstract, the default constructor is protected
2766 // The default static constructor is private
2770 mods = Modifiers.STATIC | Modifiers.PRIVATE;
2772 mods = ((ModFlags & Modifiers.ABSTRACT) != 0) ? Modifiers.PROTECTED : Modifiers.PUBLIC;
2775 Constructor c = new Constructor (this, MemberName.Name, mods,
2776 Parameters.EmptyReadOnlyParameters,
2777 new GeneratedBaseInitializer (Location),
2781 c.Block = new ToplevelBlock (null, Location);
2784 void DefineFieldInitializers ()
2786 if (initialized_fields != null) {
2787 for (int i = 0; i < initialized_fields.Count; ++i) {
2788 FieldInitializer fi = (FieldInitializer)initialized_fields[i];
2790 EmitContext ec = new EmitContext (fi.TypeContainer, fi.TypeContainer,
2791 Location, null, null, ModFlags);
2792 ec.IsFieldInitializer = true;
2794 fi.ResolveStatement (ec);
2795 if (fi.IsDefaultInitializer && RootContext.Optimize) {
2796 // Field is re-initialized to its default value => removed
2797 initialized_fields.RemoveAt (i);
2803 if (initialized_static_fields != null) {
2804 bool has_complex_initializer = false;
2806 foreach (FieldInitializer fi in initialized_static_fields) {
2807 EmitContext ec = new EmitContext (fi.TypeContainer, fi.TypeContainer,
2808 Location, null, null, ModFlags);
2810 ec.IsFieldInitializer = true;
2812 fi.ResolveStatement (ec);
2813 if (!fi.IsComplexInitializer)
2816 has_complex_initializer = true;
2819 // Need special check to not optimize code like this
2820 // static int a = b = 5;
2821 // static int b = 0;
2822 if (!has_complex_initializer && RootContext.Optimize) {
2823 for (int i = 0; i < initialized_static_fields.Count; ++i) {
2824 FieldInitializer fi = (FieldInitializer)initialized_static_fields[i];
2825 if (fi.IsDefaultInitializer) {
2826 initialized_static_fields.RemoveAt (i);
2832 if (default_static_constructor == null && initialized_static_fields.Count > 0) {
2833 DefineDefaultConstructor (true);
2839 public override bool Define ()
2841 DefineFieldInitializers ();
2843 if (default_static_constructor != null)
2844 default_static_constructor.Define ();
2846 return base.Define ();
2849 public override void Emit ()
2853 if (declarative_security != null) {
2854 foreach (DictionaryEntry de in declarative_security) {
2855 TypeBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
2860 protected override TypeAttributes TypeAttr {
2862 if (default_static_constructor == null)
2863 return base.TypeAttr | TypeAttributes.BeforeFieldInit;
2865 return base.TypeAttr;
2871 // TODO: should be sealed
2872 public class Class : ClassOrStruct {
2873 const int AllowedModifiers =
2876 Modifiers.PROTECTED |
2877 Modifiers.INTERNAL |
2879 Modifiers.ABSTRACT |
2884 public const TypeAttributes StaticClassAttribute = TypeAttributes.Abstract | TypeAttributes.Sealed;
2886 public Class (NamespaceEntry ns, DeclSpace parent, MemberName name, int mod,
2888 : base (ns, parent, name, attrs, Kind.Class)
2890 int accmods = Parent.Parent == null ? Modifiers.INTERNAL : Modifiers.PRIVATE;
2891 this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, Location);
2893 if (IsStatic && RootContext.Version == LanguageVersion.ISO_1) {
2894 Report.FeatureIsNotISO1 (Location, "static classes");
2898 public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
2900 if (a.Type == TypeManager.attribute_usage_type) {
2901 if (BaseType != TypeManager.attribute_type && !BaseType.IsSubclassOf (TypeManager.attribute_type) &&
2902 TypeBuilder.FullName != "System.Attribute") {
2903 Report.Error (641, a.Location, "Attribute `{0}' is only valid on classes derived from System.Attribute", a.GetSignatureForError ());
2907 if (a.Type == TypeManager.conditional_attribute_type &&
2908 !(BaseType == TypeManager.attribute_type || BaseType.IsSubclassOf (TypeManager.attribute_type))) {
2909 Report.Error (1689, a.Location, "Attribute `System.Diagnostics.ConditionalAttribute' is only valid on methods or attribute classes");
2913 if (a.Type == TypeManager.comimport_attr_type &&
2914 !attributes.Contains (TypeManager.guid_attr_type)) {
2915 a.Error_MissingGuidAttribute ();
2919 if (AttributeTester.IsAttributeExcluded (a.Type))
2922 base.ApplyAttributeBuilder (a, cb);
2925 public override AttributeTargets AttributeTargets {
2927 return AttributeTargets.Class;
2931 protected override void DefineContainerMembers (MemberCoreArrayList list)
2937 base.DefineContainerMembers (list);
2941 foreach (MemberCore m in list) {
2942 if (m is Operator) {
2943 Report.Error (715, m.Location, "`{0}': Static classes cannot contain user-defined operators", m.GetSignatureForError ());
2947 if (m is Destructor) {
2948 Report.Error (711, m.Location, "`{0}': Static classes cannot contain destructor", GetSignatureForError ());
2952 if ((m.ModFlags & Modifiers.PROTECTED) != 0) {
2953 Report.Error (1057, m.Location, "`{0}': Static classes cannot contain protected members", m.GetSignatureForError ());
2958 Report.Error (720, m.Location, "`{0}': cannot declare indexers in a static class", m.GetSignatureForError ());
2962 if ((m.ModFlags & Modifiers.STATIC) != 0 || m is Enum || m is Delegate)
2965 if (m is Constructor) {
2966 Report.Error (710, m.Location, "`{0}': Static classes cannot have instance constructors", GetSignatureForError ());
2970 Report.Error (708, m.Location, "`{0}': cannot declare instance members in a static class", m.GetSignatureForError ());
2973 base.DefineContainerMembers (list);
2976 public override TypeBuilder DefineType ()
2978 if ((ModFlags & Modifiers.ABSTRACT) == Modifiers.ABSTRACT && (ModFlags & (Modifiers.SEALED | Modifiers.STATIC)) != 0) {
2979 Report.Error (418, Location, "`{0}': an abstract class cannot be sealed or static", GetSignatureForError ());
2983 if ((ModFlags & (Modifiers.SEALED | Modifiers.STATIC)) == (Modifiers.SEALED | Modifiers.STATIC)) {
2984 Report.Error (441, Location, "`{0}': a class cannot be both static and sealed", GetSignatureForError ());
2988 return base.DefineType ();
2991 protected override bool DoDefineMembers ()
2993 if (InstanceConstructors == null && !IsStatic)
2994 DefineDefaultConstructor (false);
2996 return base.DoDefineMembers ();
2999 public override TypeExpr[] GetClassBases (out TypeExpr base_class)
3001 TypeExpr[] ifaces = base.GetClassBases (out base_class);
3003 if (base_class == null) {
3004 if (RootContext.StdLib)
3005 base_class = TypeManager.system_object_expr;
3006 else if (Name != "System.Object")
3007 base_class = TypeManager.system_object_expr;
3009 if (Kind == Kind.Class && base_class is TypeParameterExpr){
3011 689, base_class.Location,
3012 "Cannot derive from `{0}' because it is a type parameter",
3013 base_class.GetSignatureForError ());
3017 if (base_class.Type.IsArray || base_class.Type.IsPointer) {
3018 Report.Error (1521, base_class.Location, "Invalid base type");
3022 if (base_class.IsSealed){
3023 Report.SymbolRelatedToPreviousError (base_class.Type);
3024 if (base_class.Type.IsAbstract) {
3025 Report.Error (709, Location, "`{0}': Cannot derive from static class `{1}'",
3026 GetSignatureForError (), TypeManager.CSharpName (base_class.Type));
3028 Report.Error (509, Location, "`{0}': cannot derive from sealed class `{1}'",
3029 GetSignatureForError (), TypeManager.CSharpName (base_class.Type));
3034 if (!base_class.CanInheritFrom ()){
3035 Report.Error (644, Location, "`{0}' cannot derive from special class `{1}'",
3036 GetSignatureForError (), base_class.GetSignatureForError ());
3040 if (!base_class.AsAccessible (this, ModFlags)) {
3041 Report.SymbolRelatedToPreviousError (base_class.Type);
3042 Report.Error (60, Location, "Inconsistent accessibility: base class `{0}' is less accessible than class `{1}'",
3043 TypeManager.CSharpName (base_class.Type), GetSignatureForError ());
3048 if (base_class != TypeManager.system_object_expr) {
3049 Report.Error (713, Location, "Static class `{0}' cannot derive from type `{1}'. Static classes must derive from object",
3050 GetSignatureForError (), base_class.GetSignatureForError ());
3054 if (ifaces != null) {
3055 foreach (TypeExpr t in ifaces)
3056 Report.SymbolRelatedToPreviousError (t.Type);
3057 Report.Error (714, Location, "`{0}': static classes cannot implement interfaces", GetSignatureForError ());
3064 /// Search for at least one defined condition in ConditionalAttribute of attribute class
3065 /// Valid only for attribute classes.
3066 public bool IsExcluded ()
3068 if ((caching_flags & Flags.Excluded_Undetected) == 0)
3069 return (caching_flags & Flags.Excluded) != 0;
3071 caching_flags &= ~Flags.Excluded_Undetected;
3073 if (OptAttributes == null)
3076 Attribute[] attrs = OptAttributes.SearchMulti (TypeManager.conditional_attribute_type);
3081 foreach (Attribute a in attrs) {
3082 string condition = a.GetConditionalAttributeValue ();
3083 if (RootContext.AllDefines.Contains (condition))
3087 caching_flags |= Flags.Excluded;
3093 return (ModFlags & Modifiers.STATIC) != 0;
3098 // FIXME: How do we deal with the user specifying a different
3101 protected override TypeAttributes TypeAttr {
3103 TypeAttributes ta = base.TypeAttr | TypeAttributes.AutoLayout | TypeAttributes.Class;
3105 ta |= StaticClassAttribute;
3111 public sealed class Struct : ClassOrStruct {
3113 // Modifiers allowed in a struct declaration
3115 const int AllowedModifiers =
3118 Modifiers.PROTECTED |
3119 Modifiers.INTERNAL |
3123 public Struct (NamespaceEntry ns, DeclSpace parent, MemberName name,
3124 int mod, Attributes attrs)
3125 : base (ns, parent, name, attrs, Kind.Struct)
3129 if (parent.Parent == null)
3130 accmods = Modifiers.INTERNAL;
3132 accmods = Modifiers.PRIVATE;
3134 this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, Location);
3136 this.ModFlags |= Modifiers.SEALED;
3139 public override AttributeTargets AttributeTargets {
3141 return AttributeTargets.Struct;
3145 const TypeAttributes DefaultTypeAttributes =
3146 TypeAttributes.SequentialLayout |
3147 TypeAttributes.Sealed |
3148 TypeAttributes.BeforeFieldInit;
3151 public override TypeExpr[] GetClassBases (out TypeExpr base_class)
3153 TypeExpr[] ifaces = base.GetClassBases (out base_class);
3155 // If we are compiling our runtime,
3156 // and we are defining ValueType, then our
3157 // base is `System.Object'.
3159 if (base_class == null) {
3160 if (!RootContext.StdLib && Name == "System.ValueType")
3161 base_class = TypeManager.system_object_expr;
3163 base_class = TypeManager.system_valuetype_expr;
3170 // FIXME: Allow the user to specify a different set of attributes
3171 // in some cases (Sealed for example is mandatory for a class,
3172 // but what SequentialLayout can be changed
3174 protected override TypeAttributes TypeAttr {
3176 return base.TypeAttr | DefaultTypeAttributes;
3180 public override void RegisterFieldForInitialization (MemberCore field, FieldInitializer expression)
3182 if ((field.ModFlags & Modifiers.STATIC) == 0) {
3183 Report.Error (573, field.Location, "`{0}': Structs cannot have instance field initializers",
3184 field.GetSignatureForError ());
3187 base.RegisterFieldForInitialization (field, expression);
3195 public sealed class Interface : TypeContainer, IMemberContainer {
3198 /// Modifiers allowed in a class declaration
3200 public const int AllowedModifiers =
3203 Modifiers.PROTECTED |
3204 Modifiers.INTERNAL |
3208 public Interface (NamespaceEntry ns, DeclSpace parent, MemberName name, int mod,
3210 : base (ns, parent, name, attrs, Kind.Interface)
3214 if (parent.Parent == null)
3215 accmods = Modifiers.INTERNAL;
3217 accmods = Modifiers.PRIVATE;
3219 this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, name.Location);
3222 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
3224 if (a.Type == TypeManager.comimport_attr_type &&
3225 !attributes.Contains (TypeManager.guid_attr_type)) {
3226 a.Error_MissingGuidAttribute ();
3229 base.ApplyAttributeBuilder (a, cb);
3233 public override AttributeTargets AttributeTargets {
3235 return AttributeTargets.Interface;
3239 const TypeAttributes DefaultTypeAttributes =
3240 TypeAttributes.AutoLayout |
3241 TypeAttributes.Abstract |
3242 TypeAttributes.Interface;
3244 protected override TypeAttributes TypeAttr {
3246 return base.TypeAttr | DefaultTypeAttributes;
3250 protected override bool VerifyClsCompliance ()
3252 if (!base.VerifyClsCompliance ())
3255 if (ifaces != null) {
3256 foreach (Type t in ifaces) {
3257 if (AttributeTester.IsClsCompliant (t))
3260 Report.SymbolRelatedToPreviousError (t);
3261 Report.Warning (3027, 1, Location, "`{0}' is not CLS-compliant because base interface `{1}' is not CLS-compliant",
3262 GetSignatureForError (), TypeManager.CSharpName (t));
3270 // It is used as a base class for all property based members
3271 // This includes properties, indexers, and events
3272 public abstract class PropertyBasedMember : InterfaceMemberBase
3274 public PropertyBasedMember (DeclSpace parent, GenericMethod generic,
3275 Expression type, int mod, int allowed_mod, bool is_iface,
3276 MemberName name, Attributes attrs)
3277 : base (parent, generic, type, mod, allowed_mod, is_iface, name, attrs)
3281 protected override bool CheckForDuplications ()
3283 throw new NotSupportedException ();
3286 protected override bool VerifyClsCompliance ()
3288 if (!base.VerifyClsCompliance ())
3291 if (!AttributeTester.IsClsCompliant (MemberType)) {
3292 Report.Error (3003, Location, "Type of `{0}' is not CLS-compliant",
3293 GetSignatureForError ());
3301 public abstract class MethodCore : InterfaceMemberBase
3303 public readonly Parameters Parameters;
3304 protected ToplevelBlock block;
3306 public MethodCore (DeclSpace parent, GenericMethod generic,
3307 Expression type, int mod, int allowed_mod, bool is_iface,
3308 MemberName name, Attributes attrs, Parameters parameters)
3309 : base (parent, generic, type, mod, allowed_mod, is_iface, name, attrs)
3311 Parameters = parameters;
3315 // Returns the System.Type array for the parameters of this method
3317 public Type [] ParameterTypes {
3319 return Parameters.Types;
3323 public Parameters ParameterInfo
3330 public ToplevelBlock Block {
3340 protected bool DoDefineParameters ()
3342 IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
3344 // Check if arguments were correct
3345 if (!Parameters.Resolve (rc))
3348 return CheckParameters (Parameters);
3351 protected override bool CheckBase ()
3353 // Check whether arguments were correct.
3354 if (!DoDefineParameters ())
3357 if (!base.CheckBase ())
3363 // TODO: create a special method for operators only to make code better
3364 protected bool IsDuplicateImplementation (MethodCore method)
3369 Operator op2 = null;
3370 Operator op1 = null;
3372 if (!(method.MemberName.Equals (MemberName)))
3374 op1 = this as Operator;
3375 if (op1 == null || !(op1.OperatorType == Operator.OpType.Explicit || op1.OperatorType == Operator.OpType.Implicit))
3378 op2 = method as Operator;
3379 if (op2 == null || !(op2.OperatorType == Operator.OpType.Explicit || op2.OperatorType == Operator.OpType.Implicit))
3382 op1 = this as Operator;
3383 op2 = method as Operator;
3386 Type[] param_types = method.ParameterTypes;
3387 // This never happen. Rewrite this as Equal
3388 if (param_types == null && ParameterTypes == null)
3390 if (param_types == null || ParameterTypes == null)
3393 if (param_types.Length != ParameterTypes.Length)
3396 if (method.Parameters.HasArglist != Parameters.HasArglist)
3401 for (int i = 0; i < param_types.Length; i++) {
3402 if (param_types [i] != ParameterTypes [i])
3406 if (IsExplicitImpl && (method.InterfaceType != InterfaceType))
3409 // TODO: make operator compatible with MethodCore to avoid this
3410 if (op1 != null && op2 != null) {
3411 if (MemberType != method.MemberType)
3417 // Try to report 663: method only differs on out/ref
3419 Parameters info = ParameterInfo;
3420 Parameters other_info = method.ParameterInfo;
3421 for (int i = 0; i < info.Count; i++){
3422 if (info.ParameterModifier (i) != other_info.ParameterModifier (i)){
3423 Report.SymbolRelatedToPreviousError (method);
3424 Report.Error (663, Location, "`{0}': Methods cannot differ only on their use of ref and out on a parameters",
3425 GetSignatureForError ());
3430 Report.SymbolRelatedToPreviousError (method);
3431 if (this is Operator && method is Operator)
3432 Report.Error (557, Location, "Duplicate user-defined conversion in type `{0}'", Parent.Name);
3434 Report.Error (111, Location, TypeContainer.Error111, GetSignatureForError ());
3443 // Returns a string that represents the signature for this
3444 // member which should be used in XML documentation.
3446 public override string GetDocCommentName (DeclSpace ds)
3448 return DocUtil.GetMethodDocCommentName (this, Parameters, ds);
3452 // Raised (and passed an XmlElement that contains the comment)
3453 // when GenerateDocComment is writing documentation expectedly.
3455 // FIXME: with a few effort, it could be done with XmlReader,
3456 // that means removal of DOM use.
3458 internal override void OnGenerateDocComment (XmlElement el)
3460 DocUtil.OnMethodGenerateDocComment (this, el);
3464 // Represents header string for documentation comment.
3466 public override string DocCommentHeader
3468 get { return "M:"; }
3471 public virtual void SetYields ()
3473 ModFlags |= Modifiers.METHOD_YIELDS;
3476 protected override bool VerifyClsCompliance ()
3478 if (!base.VerifyClsCompliance ())
3481 if (Parameters.HasArglist) {
3482 Report.Error (3000, Location, "Methods with variable arguments are not CLS-compliant");
3485 if (!AttributeTester.IsClsCompliant (MemberType)) {
3486 Report.Error (3002, Location, "Return type of `{0}' is not CLS-compliant",
3487 GetSignatureForError ());
3490 Parameters.VerifyClsCompliance ();
3496 public abstract class InterfaceMemberBase : MemberBase {
3498 // Whether this is an interface member.
3500 public bool IsInterface;
3503 // If true, this is an explicit interface implementation
3505 public bool IsExplicitImpl;
3508 // The interface type we are explicitly implementing
3510 public Type InterfaceType;
3513 // The method we're overriding if this is an override method.
3515 protected MethodInfo base_method;
3517 readonly int explicit_mod_flags;
3518 public MethodAttributes flags;
3520 public InterfaceMemberBase (DeclSpace parent, GenericMethod generic,
3521 Expression type, int mod, int allowed_mod, bool is_iface,
3522 MemberName name, Attributes attrs)
3523 : base (parent, generic, type, mod, allowed_mod, Modifiers.PRIVATE,
3526 IsInterface = is_iface;
3527 IsExplicitImpl = (MemberName.Left != null);
3528 explicit_mod_flags = mod;
3531 protected override bool CheckBase ()
3533 if (!base.CheckBase ())
3536 if ((caching_flags & Flags.TestMethodDuplication) != 0 && !CheckForDuplications ())
3542 // Is null for System.Object while compiling corlib and base interfaces
3543 if (Parent.PartialContainer.BaseCache == null) {
3544 if ((ModFlags & Modifiers.NEW) != 0) {
3545 Report.Warning (109, 4, Location, "The member `{0}' does not hide an inherited member. The new keyword is not required", GetSignatureForError ());
3550 Type base_ret_type = null;
3551 base_method = FindOutBaseMethod (ref base_ret_type);
3553 // method is override
3554 if (base_method != null) {
3555 if (!CheckMethodAgainstBase (base_ret_type))
3558 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
3559 ObsoleteAttribute oa = AttributeTester.GetMethodObsoleteAttribute (base_method);
3561 if (OptAttributes == null || !OptAttributes.Contains (TypeManager.obsolete_attribute_type)) {
3562 Report.SymbolRelatedToPreviousError (base_method);
3563 Report.Warning (672, 1, Location, "Member `{0}' overrides obsolete member `{1}'. Add the Obsolete attribute to `{0}'",
3564 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3567 if (OptAttributes != null && OptAttributes.Contains (TypeManager.obsolete_attribute_type)) {
3568 Report.Warning (809, 1, Location, "Obsolete member `{0}' overrides non-obsolete member `{1}'",
3569 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3576 MemberInfo conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Name, !((this is Event) || (this is Property)));
3577 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
3578 if (conflict_symbol != null) {
3579 Report.SymbolRelatedToPreviousError (conflict_symbol);
3581 Report.Error (72, Location, "`{0}': cannot override because `{1}' is not an event", GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
3582 else if (this is PropertyBase)
3583 Report.Error (544, Location, "`{0}': cannot override because `{1}' is not a property", GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
3585 Report.Error (505, Location, "`{0}': cannot override because `{1}' is not a method", GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
3587 Report.Error (115, Location, "`{0}' is marked as an override but no suitable {1} found to override",
3588 GetSignatureForError (), SimpleName.GetMemberType (this));
3593 if (conflict_symbol == null) {
3594 if ((RootContext.WarningLevel >= 4) && ((ModFlags & Modifiers.NEW) != 0)) {
3595 Report.Warning (109, 4, Location, "The member `{0}' does not hide an inherited member. The new keyword is not required", GetSignatureForError ());
3600 if ((ModFlags & Modifiers.NEW) == 0) {
3601 if (this is Method && conflict_symbol is MethodBase)
3604 Report.SymbolRelatedToPreviousError (conflict_symbol);
3605 Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
3606 GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
3613 // Performs various checks on the MethodInfo `mb' regarding the modifier flags
3614 // that have been defined.
3616 // `name' is the user visible name for reporting errors (this is used to
3617 // provide the right name regarding method names and properties)
3619 bool CheckMethodAgainstBase (Type baseMethodType)
3623 if ((ModFlags & Modifiers.OVERRIDE) != 0){
3624 if (!(base_method.IsAbstract || base_method.IsVirtual)){
3625 Report.Error (506, Location,
3626 "`{0}': cannot override inherited member `{1}' because it is not marked virtual, abstract or override",
3627 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3631 // Now we check that the overriden method is not final
3633 if (base_method.IsFinal) {
3634 Report.SymbolRelatedToPreviousError (base_method);
3635 Report.Error (239, Location, "`{0}': cannot override inherited member `{1}' because it is sealed",
3636 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3640 // Check that the permissions are not being changed
3642 MethodAttributes thisp = flags & MethodAttributes.MemberAccessMask;
3643 MethodAttributes base_classp = base_method.Attributes & MethodAttributes.MemberAccessMask;
3645 if (!CheckAccessModifiers (thisp, base_classp, base_method)) {
3646 Error_CannotChangeAccessModifiers (base_method, base_classp, null);
3650 if (!TypeManager.IsEqual (MemberType, TypeManager.TypeToCoreType (baseMethodType))) {
3651 Report.SymbolRelatedToPreviousError (base_method);
3652 if (this is PropertyBasedMember) {
3653 Report.Error (1715, Location, "`{0}': type must be `{1}' to match overridden member `{2}'",
3654 GetSignatureForError (), TypeManager.CSharpName (baseMethodType), TypeManager.CSharpSignature (base_method));
3657 Report.Error (508, Location, "`{0}': return type must be `{1}' to match overridden member `{2}'",
3658 GetSignatureForError (), TypeManager.CSharpName (baseMethodType), TypeManager.CSharpSignature (base_method));
3664 if ((ModFlags & Modifiers.NEW) == 0) {
3665 if ((ModFlags & Modifiers.OVERRIDE) == 0 && Name != "Finalize") {
3666 ModFlags |= Modifiers.NEW;
3667 Report.SymbolRelatedToPreviousError (base_method);
3668 if (!IsInterface && (base_method.IsVirtual || base_method.IsAbstract)) {
3669 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",
3670 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3672 Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
3673 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3677 if (base_method.IsAbstract && !IsInterface) {
3678 Report.SymbolRelatedToPreviousError (base_method);
3679 Report.Error (533, Location, "`{0}' hides inherited abstract member `{1}'",
3680 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
3688 protected bool CheckAccessModifiers (MethodAttributes thisp, MethodAttributes base_classp, MethodInfo base_method)
3690 if ((base_classp & MethodAttributes.FamORAssem) == MethodAttributes.FamORAssem){
3692 // when overriding protected internal, the method can be declared
3693 // protected internal only within the same assembly
3696 if ((thisp & MethodAttributes.FamORAssem) == MethodAttributes.FamORAssem){
3697 if (Parent.TypeBuilder.Assembly != base_method.DeclaringType.Assembly){
3699 // assemblies differ - report an error
3703 } else if (thisp != base_classp) {
3705 // same assembly, but other attributes differ - report an error
3710 } else if ((thisp & MethodAttributes.Family) != MethodAttributes.Family) {
3712 // if it's not "protected internal", it must be "protected"
3716 } else if (Parent.TypeBuilder.Assembly == base_method.DeclaringType.Assembly) {
3718 // protected within the same assembly - an error
3721 } else if ((thisp & ~(MethodAttributes.Family | MethodAttributes.FamORAssem)) !=
3722 (base_classp & ~(MethodAttributes.Family | MethodAttributes.FamORAssem))) {
3724 // protected ok, but other attributes differ - report an error
3730 return (thisp == base_classp);
3734 public bool CheckAbstractAndExtern (bool has_block)
3736 if (Parent.PartialContainer.Kind == Kind.Interface)
3740 if ((ModFlags & Modifiers.EXTERN) != 0) {
3741 Report.Error (179, Location, "`{0}' cannot declare a body because it is marked extern",
3742 GetSignatureForError ());
3746 if ((ModFlags & Modifiers.ABSTRACT) != 0) {
3747 Report.Error (500, Location, "`{0}' cannot declare a body because it is marked abstract",
3748 GetSignatureForError ());
3752 if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0) {
3753 Report.Error (501, Location, "`{0}' must declare a body because it is not marked abstract or extern",
3754 GetSignatureForError ());
3762 protected bool CheckParameters (Parameters parameters)
3766 foreach (Type partype in parameters.Types){
3767 if (partype.IsPointer){
3768 if (!TypeManager.VerifyUnManaged (TypeManager.GetElementType (partype), Location))
3772 if (ds.AsAccessible (partype, ModFlags))
3775 Report.SymbolRelatedToPreviousError (partype);
3776 if (this is Indexer)
3777 Report.Error (55, Location,
3778 "Inconsistent accessibility: parameter type `" +
3779 TypeManager.CSharpName (partype) + "' is less " +
3780 "accessible than indexer `" + GetSignatureForError () + "'");
3781 else if (this is Operator)
3782 Report.Error (57, Location,
3783 "Inconsistent accessibility: parameter type `" +
3784 TypeManager.CSharpName (partype) + "' is less " +
3785 "accessible than operator `" + GetSignatureForError () + "'");
3787 Report.Error (51, Location,
3788 "Inconsistent accessibility: parameter type `" +
3789 TypeManager.CSharpName (partype) + "' is less " +
3790 "accessible than method `" + GetSignatureForError () + "'");
3797 protected override bool DoDefine()
3799 if (!base.DoDefine ())
3802 if (IsExplicitImpl) {
3803 Expression expr = MemberName.Left.GetTypeExpression ();
3804 TypeExpr texpr = expr.ResolveAsTypeTerminal (this, false);
3808 InterfaceType = texpr.Type;
3810 if (!InterfaceType.IsInterface) {
3811 Report.Error (538, Location, "`{0}' in explicit interface declaration is not an interface", TypeManager.CSharpName (InterfaceType));
3815 if (!Parent.PartialContainer.VerifyImplements (this))
3822 protected virtual bool DoDefineBase ()
3825 throw new InternalErrorException ();
3828 ModFlags = Modifiers.PUBLIC |
3829 Modifiers.ABSTRACT |
3830 Modifiers.VIRTUAL | (ModFlags & Modifiers.UNSAFE) | (ModFlags & Modifiers.NEW);
3832 flags = MethodAttributes.Public |
3833 MethodAttributes.Abstract |
3834 MethodAttributes.HideBySig |
3835 MethodAttributes.NewSlot |
3836 MethodAttributes.Virtual;
3838 if (!Parent.PartialContainer.MethodModifiersValid (this))
3841 flags = Modifiers.MethodAttr (ModFlags);
3844 if (IsExplicitImpl) {
3845 Expression expr = MemberName.Left.GetTypeExpression ();
3846 TypeExpr iface_texpr = expr.ResolveAsTypeTerminal (this, false);
3847 if (iface_texpr == null)
3850 InterfaceType = iface_texpr.Type;
3852 if (!InterfaceType.IsInterface) {
3853 Report.Error (538, Location, "'{0}' in explicit interface declaration is not an interface", TypeManager.CSharpName (InterfaceType));
3857 if (!Parent.PartialContainer.VerifyImplements (this))
3860 Modifiers.Check (Modifiers.AllowedExplicitImplFlags, explicit_mod_flags, 0, Location);
3866 protected void Error_CannotChangeAccessModifiers (MemberInfo base_method, MethodAttributes ma, string suffix)
3868 Report.SymbolRelatedToPreviousError (base_method);
3869 string base_name = TypeManager.GetFullNameSignature (base_method);
3870 string this_name = GetSignatureForError ();
3871 if (suffix != null) {
3872 base_name += suffix;
3873 this_name += suffix;
3876 Report.Error (507, Location, "`{0}': cannot change access modifiers when overriding `{1}' inherited member `{2}'",
3877 this_name, Modifiers.GetDescription (ma), base_name);
3880 protected static string Error722 {
3882 return "`{0}': static types cannot be used as return types";
3887 /// For custom member duplication search in a container
3889 protected abstract bool CheckForDuplications ();
3892 /// Gets base method and its return type
3894 protected abstract MethodInfo FindOutBaseMethod (ref Type base_ret_type);
3897 // The "short" name of this property / indexer / event. This is the
3898 // name without the explicit interface.
3900 public string ShortName
3902 get { return MemberName.Name; }
3903 set { SetMemberName (new MemberName (MemberName.Left, value, Location)); }
3906 protected override bool VerifyClsCompliance ()
3908 if (!base.VerifyClsCompliance ()) {
3909 if (IsInterface && HasClsCompliantAttribute && Parent.IsClsComplianceRequired ()) {
3910 Report.Error (3010, Location, "`{0}': CLS-compliant interfaces must have only CLS-compliant members", GetSignatureForError ());
3913 if ((ModFlags & Modifiers.ABSTRACT) != 0 && Parent.TypeBuilder.IsClass && IsExposedFromAssembly () && Parent.IsClsComplianceRequired ()) {
3914 Report.Error (3011, Location, "`{0}': only CLS-compliant members can be abstract", GetSignatureForError ());
3919 if (GenericMethod != null)
3920 GenericMethod.VerifyClsCompliance ();
3925 public override bool IsUsed
3927 get { return IsExplicitImpl || base.IsUsed; }
3932 public abstract class MethodOrOperator : MethodCore, IMethodData
3934 public MethodBuilder MethodBuilder;
3935 ReturnParameter return_attributes;
3936 ListDictionary declarative_security;
3937 protected MethodData MethodData;
3940 ArrayList anonymous_methods;
3942 static string[] attribute_targets = new string [] { "method", "return" };
3944 protected MethodOrOperator (DeclSpace parent, GenericMethod generic, Expression type, int mod,
3945 int allowed_mod, bool is_interface, MemberName name,
3946 Attributes attrs, Parameters parameters)
3947 : base (parent, generic, type, mod, allowed_mod, is_interface, name,
3952 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
3954 if (a.Target == AttributeTargets.ReturnValue) {
3955 if (return_attributes == null)
3956 return_attributes = new ReturnParameter (MethodBuilder, Location);
3958 return_attributes.ApplyAttributeBuilder (a, cb);
3962 if (a.Type == TypeManager.methodimpl_attr_type &&
3963 (a.GetMethodImplOptions () & MethodImplOptions.InternalCall) != 0) {
3964 MethodBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall | MethodImplAttributes.Runtime);
3967 if (a.Type == TypeManager.dllimport_type) {
3968 const int extern_static = Modifiers.EXTERN | Modifiers.STATIC;
3969 if ((ModFlags & extern_static) != extern_static) {
3970 Report.Error (601, a.Location, "The DllImport attribute must be specified on a method marked `static' and `extern'");
3976 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
3977 if (declarative_security == null)
3978 declarative_security = new ListDictionary ();
3979 a.ExtractSecurityPermissionSet (declarative_security);
3983 MethodBuilder.SetCustomAttribute (cb);
3986 public override AttributeTargets AttributeTargets {
3988 return AttributeTargets.Method;
3992 public virtual EmitContext CreateEmitContext (DeclSpace tc, ILGenerator ig)
3994 return new EmitContext (
3995 this, tc, this.ds, Location, ig, MemberType, ModFlags, false);
3998 public void AddAnonymousMethod (AnonymousMethodExpression anonymous)
4000 if (anonymous_methods == null)
4001 anonymous_methods = new ArrayList ();
4002 anonymous_methods.Add (anonymous);
4005 protected bool DefineGenericMethod ()
4007 if (!DoDefineBase ())
4011 if (GenericMethod != null) {
4012 string method_name = MemberName.Name;
4014 if (IsExplicitImpl) {
4015 method_name = TypeManager.CSharpName (InterfaceType) +
4019 MethodBuilder = Parent.TypeBuilder.DefineMethod (method_name, flags);
4021 if (!GenericMethod.Define (MethodBuilder, block))
4029 public bool ResolveMembers ()
4031 if (!DefineGenericMethod ())
4034 if ((ModFlags & Modifiers.METHOD_YIELDS) != 0) {
4035 iterator = Iterator.CreateIterator (this, Parent, GenericMethod, ModFlags);
4036 if (iterator == null)
4040 if (anonymous_methods != null) {
4041 foreach (AnonymousMethodExpression ame in anonymous_methods) {
4042 if (!ame.CreateAnonymousHelpers ())
4050 public override bool Define ()
4055 if (!CheckAbstractAndExtern (block != null))
4061 MethodData = new MethodData (
4062 this, ModFlags, flags, this, MethodBuilder, GenericMethod, base_method);
4064 if (!MethodData.Define (Parent.PartialContainer))
4067 MethodBuilder = MethodData.MethodBuilder;
4069 if (MemberType.IsAbstract && MemberType.IsSealed) {
4070 Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
4077 public override void Emit ()
4079 if (OptAttributes != null)
4080 OptAttributes.Emit ();
4082 if (declarative_security != null) {
4083 foreach (DictionaryEntry de in declarative_security) {
4084 MethodBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
4091 protected void Error_ConditionalAttributeIsNotValid ()
4093 Report.Error (577, Location,
4094 "Conditional not valid on `{0}' because it is a constructor, destructor, operator or explicit interface implementation",
4095 GetSignatureForError ());
4098 public override bool MarkForDuplicationCheck ()
4100 caching_flags |= Flags.TestMethodDuplication;
4104 public override string[] ValidAttributeTargets {
4106 return attribute_targets;
4110 #region IMethodData Members
4112 public CallingConventions CallingConventions {
4114 CallingConventions cc = Parameters.CallingConvention;
4115 if (Parameters.HasArglist)
4116 block.HasVarargs = true;
4119 if ((ModFlags & Modifiers.STATIC) == 0)
4120 cc |= CallingConventions.HasThis;
4122 // FIXME: How is `ExplicitThis' used in C#?
4128 public Type ReturnType {
4134 public MemberName MethodName {
4140 public Iterator Iterator {
4141 get { return iterator; }
4144 public new Location Location {
4146 return base.Location;
4150 protected override bool CheckBase ()
4152 if (!base.CheckBase ())
4155 // TODO: Destructor should derive from MethodCore
4156 if (base_method != null && (ModFlags & Modifiers.OVERRIDE) != 0 && Name == "Finalize" &&
4157 base_method.DeclaringType == TypeManager.object_type && !(this is Destructor)) {
4158 Report.Error (249, Location, "Do not override object.Finalize. Instead, provide a destructor");
4166 /// Returns true if method has conditional attribute and the conditions is not defined (method is excluded).
4168 public bool IsExcluded () {
4169 if ((caching_flags & Flags.Excluded_Undetected) == 0)
4170 return (caching_flags & Flags.Excluded) != 0;
4172 caching_flags &= ~Flags.Excluded_Undetected;
4174 if (base_method == null) {
4175 if (OptAttributes == null)
4178 Attribute[] attrs = OptAttributes.SearchMulti (TypeManager.conditional_attribute_type);
4183 foreach (Attribute a in attrs) {
4184 string condition = a.GetConditionalAttributeValue ();
4185 if (condition == null)
4188 if (RootContext.AllDefines.Contains (condition))
4192 caching_flags |= Flags.Excluded;
4196 IMethodData md = TypeManager.GetMethod (base_method);
4198 if (AttributeTester.IsConditionalMethodExcluded (base_method)) {
4199 caching_flags |= Flags.Excluded;
4205 if (md.IsExcluded ()) {
4206 caching_flags |= Flags.Excluded;
4212 GenericMethod IMethodData.GenericMethod {
4214 return GenericMethod;
4222 public class SourceMethod : ISourceMethod
4227 protected SourceMethod (DeclSpace parent, MethodBase builder,
4228 ISourceFile file, Location start, Location end)
4230 this.parent = parent;
4231 this.builder = builder;
4233 CodeGen.SymbolWriter.OpenMethod (file, this, start.Row, start.Column, end.Row, start.Column);
4236 public string Name {
4237 get { return builder.Name; }
4240 public int NamespaceID {
4241 get { return parent.NamespaceEntry.SymbolFileID; }
4246 if (builder is MethodBuilder)
4247 return ((MethodBuilder) builder).GetToken ().Token;
4248 else if (builder is ConstructorBuilder)
4249 return ((ConstructorBuilder) builder).GetToken ().Token;
4251 throw new NotSupportedException ();
4255 public void CloseMethod ()
4257 if (CodeGen.SymbolWriter != null)
4258 CodeGen.SymbolWriter.CloseMethod ();
4261 public static SourceMethod Create (DeclSpace parent, MethodBase builder, Block block)
4263 if (CodeGen.SymbolWriter == null)
4268 Location start_loc = block.StartLocation;
4269 if (start_loc.IsNull)
4272 Location end_loc = block.EndLocation;
4276 ISourceFile file = start_loc.SourceFile;
4280 return new SourceMethod (
4281 parent, builder, file, start_loc, end_loc);
4285 public class Method : MethodOrOperator, IAnonymousHost {
4288 /// Modifiers allowed in a class declaration
4290 const int AllowedModifiers =
4293 Modifiers.PROTECTED |
4294 Modifiers.INTERNAL |
4299 Modifiers.OVERRIDE |
4300 Modifiers.ABSTRACT |
4302 Modifiers.METHOD_YIELDS |
4305 const int AllowedInterfaceModifiers =
4306 Modifiers.NEW | Modifiers.UNSAFE;
4309 // return_type can be "null" for VOID values.
4311 public Method (DeclSpace parent, GenericMethod generic,
4312 Expression return_type, int mod, bool is_iface,
4313 MemberName name, Parameters parameters, Attributes attrs)
4314 : base (parent, generic, return_type, mod,
4315 is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
4316 is_iface, name, attrs, parameters)
4320 public override string GetSignatureForError()
4322 return base.GetSignatureForError () + Parameters.GetSignatureForError ();
4325 void Error_DuplicateEntryPoint (MethodInfo b, Location location)
4327 Report.Error (17, location,
4328 "Program `{0}' has more than one entry point defined: `{1}'",
4329 CodeGen.FileName, TypeManager.CSharpSignature(b));
4332 bool IsEntryPoint ()
4334 if (ReturnType != TypeManager.void_type &&
4335 ReturnType != TypeManager.int32_type)
4338 if (Parameters.Count == 0)
4341 if (Parameters.Count > 1)
4344 Type t = Parameters.ParameterType (0);
4345 return t.IsArray && t.GetArrayRank () == 1 &&
4346 TypeManager.GetElementType (t) == TypeManager.string_type &&
4347 (Parameters[0].ModFlags & ~Parameter.Modifier.PARAMS) == Parameter.Modifier.NONE;
4350 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
4352 if (a.Type == TypeManager.conditional_attribute_type) {
4353 if (IsExplicitImpl) {
4354 Error_ConditionalAttributeIsNotValid ();
4358 if (ReturnType != TypeManager.void_type) {
4359 Report.Error (578, Location, "Conditional not valid on `{0}' because its return type is not void", GetSignatureForError ());
4363 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
4364 Report.Error (243, Location, "Conditional not valid on `{0}' because it is an override method", GetSignatureForError ());
4369 Report.Error (582, Location, "Conditional not valid on interface members");
4373 if (MethodData.implementing != null) {
4374 Report.Error (629, Location, "Conditional member `{0}' cannot implement interface member `{1}'",
4375 GetSignatureForError (), TypeManager.CSharpSignature (MethodData.implementing));
4379 for (int i = 0; i < Parameters.Count; ++i) {
4380 if ((Parameters.ParameterModifier (i) & Parameter.Modifier.OUTMASK) != 0) {
4381 Report.Error (685, Location, "Conditional method `{0}' cannot have an out parameter", GetSignatureForError ());
4387 base.ApplyAttributeBuilder (a, cb);
4390 protected override bool CheckForDuplications ()
4392 ArrayList ar = Parent.PartialContainer.Methods;
4394 int arLen = ar.Count;
4396 for (int i = 0; i < arLen; i++) {
4397 Method m = (Method) ar [i];
4398 if (IsDuplicateImplementation (m))
4403 ar = Parent.PartialContainer.Properties;
4405 for (int i = 0; i < ar.Count; ++i) {
4406 PropertyBase pb = (PropertyBase) ar [i];
4407 if (pb.AreAccessorsDuplicateImplementation (this))
4412 ar = Parent.PartialContainer.Indexers;
4414 for (int i = 0; i < ar.Count; ++i) {
4415 PropertyBase pb = (PropertyBase) ar [i];
4416 if (pb.AreAccessorsDuplicateImplementation (this))
4421 ar = Parent.PartialContainer.Events;
4423 for (int i = 0; i < ar.Count; ++i) {
4424 Event ev = (Event) ar [i];
4425 if (ev.AreAccessorsDuplicateImplementation (this))
4436 public override bool Define ()
4438 if (!base.Define ())
4441 if (RootContext.StdLib && (ReturnType == TypeManager.arg_iterator_type || ReturnType == TypeManager.typed_reference_type)) {
4442 Error1599 (Location, ReturnType);
4446 if (ReturnType == TypeManager.void_type && ParameterTypes.Length == 0 &&
4447 Name == "Finalize" && !(this is Destructor)) {
4448 Report.Warning (465, 1, Location, "Introducing a 'Finalize' method can interfere with destructor invocation. Did you intend to declare a destructor?");
4451 if (base_method != null) {
4452 if (Parameters.Count == 1 && ParameterTypes [0] == TypeManager.object_type && Name == "Equals")
4453 Parent.PartialContainer.Mark_HasEquals ();
4454 else if (Parameters.Empty && Name == "GetHashCode")
4455 Parent.PartialContainer.Mark_HasGetHashCode ();
4459 // This is used to track the Entry Point,
4461 if (RootContext.NeedsEntryPoint && ((ModFlags & Modifiers.STATIC) != 0) &&
4463 (RootContext.MainClass == null ||
4464 RootContext.MainClass == Parent.TypeBuilder.FullName)){
4465 if (IsEntryPoint ()) {
4467 if (RootContext.EntryPoint == null) {
4468 if (Parent.IsGeneric || MemberName.IsGeneric) {
4469 Report.Warning (402, 4, Location, "`{0}': an entry point cannot be generic or in a generic type",
4470 GetSignatureForError ());
4472 IMethodData md = TypeManager.GetMethod (MethodBuilder);
4473 md.SetMemberIsUsed ();
4475 RootContext.EntryPoint = MethodBuilder;
4476 RootContext.EntryPointLocation = Location;
4479 Error_DuplicateEntryPoint (RootContext.EntryPoint, RootContext.EntryPointLocation);
4480 Error_DuplicateEntryPoint (MethodBuilder, Location);
4483 Report.Warning (28, 4, Location, "`{0}' has the wrong signature to be an entry point",
4484 GetSignatureForError ());
4494 public override void Emit ()
4496 Report.Debug (64, "METHOD EMIT", this, MethodBuilder, Location, Block, MethodData);
4497 MethodData.Emit (Parent);
4504 public static void Error1599 (Location loc, Type t)
4506 Report.Error (1599, loc, "Method or delegate cannot return type `{0}'", TypeManager.CSharpName (t));
4509 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
4511 MethodInfo mi = (MethodInfo) Parent.PartialContainer.BaseCache.FindMemberToOverride (
4512 Parent.TypeBuilder, Name, ParameterTypes, GenericMethod, false);
4517 if (mi.IsSpecialName)
4520 base_ret_type = mi.ReturnType;
4524 protected override bool VerifyClsCompliance ()
4526 if (!base.VerifyClsCompliance ())
4529 if (ParameterInfo.Count > 0) {
4530 ArrayList al = (ArrayList)Parent.PartialContainer.MemberCache.Members [Name];
4532 MemberCache.VerifyClsParameterConflict (al, this, MethodBuilder);
4539 public abstract class ConstructorInitializer {
4540 ArrayList argument_list;
4541 protected ConstructorInfo base_constructor;
4544 public ConstructorInitializer (ArrayList argument_list, Location loc)
4546 this.argument_list = argument_list;
4550 public ArrayList Arguments {
4552 return argument_list;
4556 public bool Resolve (ConstructorBuilder caller_builder, Block block, EmitContext ec)
4558 Expression base_constructor_group;
4562 ec.CurrentBlock = block;
4564 if (argument_list != null){
4565 foreach (Argument a in argument_list){
4566 if (!a.Resolve (ec, loc))
4570 ec.CurrentBlock = null;
4572 if (this is ConstructorBaseInitializer) {
4573 if (ec.ContainerType.BaseType == null)
4576 t = ec.ContainerType.BaseType;
4577 if (ec.ContainerType.IsValueType) {
4578 Report.Error (522, loc,
4579 "`{0}': Struct constructors cannot call base constructors", TypeManager.CSharpSignature (caller_builder));
4584 // It is legal to have "this" initializers that take no arguments
4585 // in structs, they are just no-ops.
4587 // struct D { public D (int a) : this () {}
4589 if (ec.ContainerType.IsValueType && argument_list == null)
4592 t = ec.ContainerType;
4595 base_constructor_group = Expression.MemberLookup (
4596 ec.ContainerType, t, ".ctor", MemberTypes.Constructor,
4597 BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly,
4600 if (base_constructor_group == null){
4602 base_constructor_group = Expression.MemberLookup (
4603 t, null, t, ".ctor", MemberTypes.Constructor,
4604 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly,
4608 int errors = Report.Errors;
4609 if (base_constructor_group != null)
4610 base_constructor = (ConstructorInfo) Invocation.OverloadResolve (
4611 ec, (MethodGroupExpr) base_constructor_group, argument_list,
4614 if (base_constructor == null) {
4615 if (errors == Report.Errors)
4616 Invocation.Error_WrongNumArguments (loc, TypeManager.CSharpSignature (caller_builder),
4617 argument_list == null ? 0 : argument_list.Count);
4622 Report.SymbolRelatedToPreviousError (base_constructor);
4623 Expression.ErrorIsInaccesible (loc, TypeManager.CSharpSignature (base_constructor));
4624 base_constructor = null;
4628 if (base_constructor == caller_builder){
4629 Report.Error (516, loc, "Constructor `{0}' cannot call itself", TypeManager.CSharpSignature (caller_builder));
4636 public virtual void Emit (EmitContext ec)
4638 if (base_constructor != null){
4639 ec.Mark (loc, false);
4641 Invocation.EmitCall (ec, true, true, null, base_constructor, argument_list, loc);
4643 Invocation.EmitCall (ec, true, false, ec.GetThis (loc), base_constructor, argument_list, loc);
4648 public class ConstructorBaseInitializer : ConstructorInitializer {
4649 public ConstructorBaseInitializer (ArrayList argument_list, Location l) :
4650 base (argument_list, l)
4655 class GeneratedBaseInitializer: ConstructorBaseInitializer {
4656 public GeneratedBaseInitializer (Location loc):
4662 public class ConstructorThisInitializer : ConstructorInitializer {
4663 public ConstructorThisInitializer (ArrayList argument_list, Location l) :
4664 base (argument_list, l)
4669 public class Constructor : MethodCore, IMethodData, IAnonymousHost {
4670 public ConstructorBuilder ConstructorBuilder;
4671 public ConstructorInitializer Initializer;
4672 ListDictionary declarative_security;
4673 ArrayList anonymous_methods;
4676 // Modifiers allowed for a constructor.
4678 public const int AllowedModifiers =
4680 Modifiers.PROTECTED |
4681 Modifiers.INTERNAL |
4687 static string[] attribute_targets = new string [] { "method" };
4689 public Iterator Iterator {
4690 get { return null; }
4693 bool has_compliant_args = false;
4695 // The spec claims that static is not permitted, but
4696 // my very own code has static constructors.
4698 public Constructor (DeclSpace parent, string name, int mod, Parameters args,
4699 ConstructorInitializer init, Location loc)
4700 : base (parent, null, null, mod, AllowedModifiers, false,
4701 new MemberName (name, loc), null, args)
4706 public bool HasCompliantArgs {
4707 get { return has_compliant_args; }
4710 public override AttributeTargets AttributeTargets {
4711 get { return AttributeTargets.Constructor; }
4716 // Returns true if this is a default constructor
4718 public bool IsDefault ()
4720 if ((ModFlags & Modifiers.STATIC) != 0)
4721 return Parameters.Empty;
4723 return Parameters.Empty &&
4724 (Initializer is ConstructorBaseInitializer) &&
4725 (Initializer.Arguments == null);
4728 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
4730 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
4731 if (declarative_security == null) {
4732 declarative_security = new ListDictionary ();
4734 a.ExtractSecurityPermissionSet (declarative_security);
4738 if (a.Type == TypeManager.methodimpl_attr_type &&
4739 (a.GetMethodImplOptions () & MethodImplOptions.InternalCall) != 0) {
4740 ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall | MethodImplAttributes.Runtime);
4743 ConstructorBuilder.SetCustomAttribute (cb);
4746 public void AddAnonymousMethod (AnonymousMethodExpression anonymous)
4748 if (anonymous_methods == null)
4749 anonymous_methods = new ArrayList ();
4750 anonymous_methods.Add (anonymous);
4753 public bool ResolveMembers ()
4755 if (anonymous_methods != null) {
4756 foreach (AnonymousMethodExpression ame in anonymous_methods) {
4757 if (!ame.CreateAnonymousHelpers ())
4765 protected override bool CheckForDuplications ()
4767 ArrayList ar = Parent.PartialContainer.InstanceConstructors;
4769 int arLen = ar.Count;
4771 for (int i = 0; i < arLen; i++) {
4772 Constructor m = (Constructor) ar [i];
4773 if (IsDuplicateImplementation (m))
4780 protected override bool CheckBase ()
4782 if ((ModFlags & Modifiers.STATIC) != 0) {
4783 if (!Parameters.Empty) {
4784 Report.Error (132, Location, "`{0}': The static constructor must be parameterless",
4785 GetSignatureForError ());
4789 // the rest can be ignored
4793 // Check whether arguments were correct.
4794 if (!DoDefineParameters ())
4797 if (!CheckForDuplications ())
4800 if (Parent.PartialContainer.Kind == Kind.Struct) {
4801 if (ParameterTypes.Length == 0) {
4802 Report.Error (568, Location,
4803 "Structs cannot contain explicit parameterless constructors");
4807 if ((ModFlags & Modifiers.PROTECTED) != 0) {
4808 Report.Error (666, Location, "`{0}': new protected member declared in struct", GetSignatureForError ());
4813 if ((RootContext.WarningLevel >= 4) && ((Parent.ModFlags & Modifiers.SEALED) != 0 && (ModFlags & Modifiers.PROTECTED) != 0)) {
4814 Report.Warning (628, 4, Location, "`{0}': new protected member declared in sealed class", GetSignatureForError ());
4821 // Creates the ConstructorBuilder
4823 public override bool Define ()
4825 if (ConstructorBuilder != null)
4828 MethodAttributes ca = (MethodAttributes.RTSpecialName |
4829 MethodAttributes.SpecialName);
4831 if ((ModFlags & Modifiers.STATIC) != 0) {
4832 ca |= MethodAttributes.Static | MethodAttributes.Private;
4834 ca |= MethodAttributes.HideBySig;
4836 if ((ModFlags & Modifiers.PUBLIC) != 0)
4837 ca |= MethodAttributes.Public;
4838 else if ((ModFlags & Modifiers.PROTECTED) != 0){
4839 if ((ModFlags & Modifiers.INTERNAL) != 0)
4840 ca |= MethodAttributes.FamORAssem;
4842 ca |= MethodAttributes.Family;
4843 } else if ((ModFlags & Modifiers.INTERNAL) != 0)
4844 ca |= MethodAttributes.Assembly;
4846 ca |= MethodAttributes.Private;
4849 if (!CheckAbstractAndExtern (block != null))
4852 // Check if arguments were correct.
4856 ConstructorBuilder = Parent.TypeBuilder.DefineConstructor (
4857 ca, CallingConventions,
4860 if ((ModFlags & Modifiers.UNSAFE) != 0)
4861 ConstructorBuilder.InitLocals = false;
4863 if (Parent.PartialContainer.IsComImport) {
4864 if (!IsDefault ()) {
4865 Report.Error (669, Location, "`{0}': A class with the ComImport attribute cannot have a user-defined constructor",
4866 Parent.GetSignatureForError ());
4869 ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall);
4872 TypeManager.AddMethod (ConstructorBuilder, this);
4880 public override void Emit ()
4882 if (OptAttributes != null)
4883 OptAttributes.Emit ();
4885 EmitContext ec = CreateEmitContext (null, null);
4887 if (block != null) {
4888 // If this is a non-static `struct' constructor and doesn't have any
4889 // initializer, it must initialize all of the struct's fields.
4890 if ((Parent.PartialContainer.Kind == Kind.Struct) &&
4891 ((ModFlags & Modifiers.STATIC) == 0) && (Initializer == null))
4892 block.AddThisVariable (Parent, Location);
4894 if (!block.ResolveMeta (ec, ParameterInfo))
4898 if ((ModFlags & Modifiers.STATIC) == 0){
4899 if (Parent.PartialContainer.Kind == Kind.Class && Initializer == null)
4900 Initializer = new GeneratedBaseInitializer (Location);
4904 // Spec mandates that Initializers will not have
4908 if ((Initializer != null) &&
4909 !Initializer.Resolve (ConstructorBuilder, block, ec))
4911 ec.IsStatic = false;
4914 Parameters.ApplyAttributes (ConstructorBuilder);
4916 SourceMethod source = SourceMethod.Create (
4917 Parent, ConstructorBuilder, block);
4920 // Classes can have base initializers and instance field initializers.
4922 if (Parent.PartialContainer.Kind == Kind.Class){
4923 if ((ModFlags & Modifiers.STATIC) == 0){
4926 // If we use a "this (...)" constructor initializer, then
4927 // do not emit field initializers, they are initialized in the other constructor
4929 if (!(Initializer != null && Initializer is ConstructorThisInitializer))
4930 Parent.PartialContainer.EmitFieldInitializers (ec);
4934 bool unreachable = false;
4935 if (block != null) {
4936 ec.ResolveTopBlock (null, block, ParameterInfo, this, out unreachable);
4937 ec.EmitMeta (block);
4939 if (block.ScopeInfo != null) {
4940 ExpressionStatement init = block.ScopeInfo.GetScopeInitializer (ec);
4941 init.EmitStatement (ec);
4945 if (Initializer != null) {
4946 Initializer.Emit (ec);
4949 if ((ModFlags & Modifiers.STATIC) != 0)
4950 Parent.PartialContainer.EmitFieldInitializers (ec);
4953 ec.EmitResolvedTopBlock (block, unreachable);
4956 source.CloseMethod ();
4960 if (declarative_security != null) {
4961 foreach (DictionaryEntry de in declarative_security) {
4962 ConstructorBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
4969 // Is never override
4970 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
4975 public override string GetSignatureForError()
4977 return base.GetSignatureForError () + Parameters.GetSignatureForError ();
4980 public override string[] ValidAttributeTargets {
4982 return attribute_targets;
4986 protected override bool VerifyClsCompliance ()
4988 if (!base.VerifyClsCompliance () || !IsExposedFromAssembly ()) {
4992 if (ParameterInfo.Count > 0) {
4993 ArrayList al = (ArrayList)Parent.MemberCache.Members [".ctor"];
4995 MemberCache.VerifyClsParameterConflict (al, this, ConstructorBuilder);
4997 if (Parent.TypeBuilder.IsSubclassOf (TypeManager.attribute_type)) {
4998 foreach (Type param in ParameterTypes) {
4999 if (param.IsArray) {
5005 has_compliant_args = true;
5009 #region IMethodData Members
5011 public System.Reflection.CallingConventions CallingConventions {
5013 CallingConventions cc = Parameters.CallingConvention;
5015 if (Parent.PartialContainer.Kind == Kind.Class)
5016 if ((ModFlags & Modifiers.STATIC) == 0)
5017 cc |= CallingConventions.HasThis;
5019 // FIXME: How is `ExplicitThis' used in C#?
5025 public new Location Location {
5027 return base.Location;
5031 public MemberName MethodName {
5037 public Type ReturnType {
5043 public EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
5045 ILGenerator ig_ = ConstructorBuilder.GetILGenerator ();
5046 return new EmitContext (this, Parent, Location, ig_, null, ModFlags, true);
5049 public bool IsExcluded()
5054 GenericMethod IMethodData.GenericMethod {
5064 /// Interface for MethodData class. Holds links to parent members to avoid member duplication.
5066 public interface IMethodData
5068 CallingConventions CallingConventions { get; }
5069 Location Location { get; }
5070 MemberName MethodName { get; }
5071 Type ReturnType { get; }
5072 GenericMethod GenericMethod { get; }
5073 Parameters ParameterInfo { get; }
5075 Iterator Iterator { get; }
5077 Attributes OptAttributes { get; }
5078 ToplevelBlock Block { get; set; }
5080 EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig);
5081 ObsoleteAttribute GetObsoleteAttribute ();
5082 string GetSignatureForError ();
5084 bool IsClsComplianceRequired ();
5085 void SetMemberIsUsed ();
5089 // Encapsulates most of the Method's state
5091 public class MethodData {
5093 readonly IMethodData method;
5095 public readonly GenericMethod GenericMethod;
5098 // Are we implementing an interface ?
5100 public MethodInfo implementing;
5105 protected InterfaceMemberBase member;
5106 protected int modifiers;
5107 protected MethodAttributes flags;
5108 protected Type declaring_type;
5109 protected MethodInfo parent_method;
5111 MethodBuilder builder = null;
5112 public MethodBuilder MethodBuilder {
5118 public Type DeclaringType {
5120 return declaring_type;
5124 public MethodData (InterfaceMemberBase member,
5125 int modifiers, MethodAttributes flags, IMethodData method)
5127 this.member = member;
5128 this.modifiers = modifiers;
5131 this.method = method;
5134 public MethodData (InterfaceMemberBase member,
5135 int modifiers, MethodAttributes flags,
5136 IMethodData method, MethodBuilder builder,
5137 GenericMethod generic, MethodInfo parent_method)
5138 : this (member, modifiers, flags, method)
5140 this.builder = builder;
5141 this.GenericMethod = generic;
5142 this.parent_method = parent_method;
5145 public bool Define (DeclSpace parent)
5147 string name = method.MethodName.Basename;
5148 string method_name = method.MethodName.FullName;
5150 TypeContainer container = parent.PartialContainer;
5152 PendingImplementation pending = container.PendingImplementations;
5153 if (pending != null){
5154 if (member is Indexer) // TODO: test it, but it should work without this IF
5155 implementing = pending.IsInterfaceIndexer (
5156 member.InterfaceType, method.ReturnType, method.ParameterInfo);
5158 implementing = pending.IsInterfaceMethod (
5159 member.InterfaceType, name, method.ReturnType, method.ParameterInfo);
5161 if (member.InterfaceType != null){
5162 if (implementing == null){
5163 if (member is PropertyBase) {
5164 Report.Error (550, method.Location, "`{0}' is an accessor not found in interface member `{1}{2}'",
5165 method.GetSignatureForError (), TypeManager.CSharpName (member.InterfaceType),
5166 member.GetSignatureForError ().Substring (member.GetSignatureForError ().LastIndexOf ('.')));
5169 Report.Error (539, method.Location,
5170 "`{0}.{1}' in explicit interface declaration is not a member of interface",
5171 TypeManager.CSharpName (member.InterfaceType), member.ShortName);
5175 if (implementing.IsSpecialName && !(method is AbstractPropertyEventMethod)) {
5176 Report.SymbolRelatedToPreviousError (implementing);
5177 Report.Error (683, method.Location, "`{0}' explicit method implementation cannot implement `{1}' because it is an accessor",
5178 member.GetSignatureForError (), TypeManager.CSharpSignature (implementing));
5182 method_name = TypeManager.GetFullName (member.InterfaceType) +
5185 if (implementing != null) {
5186 AbstractPropertyEventMethod prop_method = method as AbstractPropertyEventMethod;
5187 if (prop_method == null) {
5188 if (implementing.IsSpecialName) {
5189 Report.SymbolRelatedToPreviousError (implementing);
5190 Report.Error (470, method.Location, "Method `{0}' cannot implement interface accessor `{1}.{2}'",
5191 method.GetSignatureForError (), TypeManager.CSharpSignature (implementing),
5192 implementing.Name.StartsWith ("get_") ? "get" : "set");
5195 } else if (implementing.DeclaringType.IsInterface) {
5196 if (!implementing.IsSpecialName) {
5197 Report.SymbolRelatedToPreviousError (implementing);
5198 Report.Error (686, method.Location, "Accessor `{0}' cannot implement interface member `{1}' for type `{2}'. Use an explicit interface implementation",
5199 method.GetSignatureForError (), TypeManager.CSharpSignature (implementing), container.GetSignatureForError ());
5202 PropertyBase.PropertyMethod pm = prop_method as PropertyBase.PropertyMethod;
5203 if (pm != null && pm.HasCustomAccessModifier && (pm.ModFlags & Modifiers.PUBLIC) == 0) {
5204 Report.SymbolRelatedToPreviousError (implementing);
5205 Report.Error (277, method.Location, "Accessor `{0}' must be declared public to implement interface member `{1}'",
5206 method.GetSignatureForError (), TypeManager.CSharpSignature (implementing, true));
5215 // For implicit implementations, make sure we are public, for
5216 // explicit implementations, make sure we are private.
5218 if (implementing != null){
5220 // Setting null inside this block will trigger a more
5221 // verbose error reporting for missing interface implementations
5223 // The "candidate" function has been flagged already
5224 // but it wont get cleared
5226 if (member.IsExplicitImpl){
5227 if (method.ParameterInfo.HasParams && !TypeManager.GetParameterData (implementing).HasParams) {
5228 Report.SymbolRelatedToPreviousError (implementing);
5229 Report.Error (466, method.Location, "`{0}': the explicit interface implementation cannot introduce the params modifier",
5230 method.GetSignatureForError ());
5234 if (implementing.DeclaringType.IsInterface) {
5236 // If this is an interface method implementation,
5237 // check for public accessibility
5239 if ((flags & MethodAttributes.MemberAccessMask) != MethodAttributes.Public)
5240 implementing = null;
5241 } else if ((flags & MethodAttributes.MemberAccessMask) == MethodAttributes.Private){
5242 // We may never be private.
5243 implementing = null;
5244 } else if ((modifiers & Modifiers.OVERRIDE) == 0){
5246 // We may be protected if we're overriding something.
5248 implementing = null;
5253 // Static is not allowed
5255 if ((modifiers & Modifiers.STATIC) != 0){
5256 implementing = null;
5261 // If implementing is still valid, set flags
5263 if (implementing != null){
5265 // When implementing interface methods, set NewSlot
5266 // unless, we are overwriting a method.
5268 if (implementing.DeclaringType.IsInterface){
5269 if ((modifiers & Modifiers.OVERRIDE) == 0)
5270 flags |= MethodAttributes.NewSlot;
5273 MethodAttributes.Virtual |
5274 MethodAttributes.HideBySig;
5276 // Set Final unless we're virtual, abstract or already overriding a method.
5277 if ((modifiers & (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE)) == 0)
5278 flags |= MethodAttributes.Final;
5281 EmitContext ec = method.CreateEmitContext (container, null);
5283 DefineMethodBuilder (container, method_name, method.ParameterInfo.Types);
5285 if (builder == null)
5288 if (container.CurrentType != null)
5289 declaring_type = container.CurrentType;
5291 declaring_type = container.TypeBuilder;
5293 if ((modifiers & Modifiers.UNSAFE) != 0)
5294 builder.InitLocals = false;
5296 if (implementing != null){
5298 // clear the pending implemntation flag
5300 if (member is Indexer) {
5301 pending.ImplementIndexer (
5302 member.InterfaceType, builder, method.ReturnType,
5303 method.ParameterInfo, member.IsExplicitImpl);
5305 pending.ImplementMethod (
5306 member.InterfaceType, name, method.ReturnType,
5307 method.ParameterInfo, member.IsExplicitImpl);
5309 if (member.IsExplicitImpl)
5310 container.TypeBuilder.DefineMethodOverride (
5311 builder, implementing);
5315 TypeManager.AddMethod (builder, method);
5317 if (GenericMethod != null) {
5318 bool is_override = member.IsExplicitImpl |
5319 ((modifiers & Modifiers.OVERRIDE) != 0);
5321 if (implementing != null)
5322 parent_method = implementing;
5324 if (!GenericMethod.DefineType (ec, builder, parent_method, is_override))
5333 /// Create the MethodBuilder for the method
5335 void DefineMethodBuilder (TypeContainer container, string method_name, Type[] ParameterTypes)
5337 if ((modifiers & Modifiers.EXTERN) != 0) {
5339 if (method.OptAttributes != null) {
5340 Attribute dllimport_attribute = method.OptAttributes.Search (TypeManager.dllimport_type);
5341 if (dllimport_attribute != null) {
5342 flags |= MethodAttributes.PinvokeImpl;
5343 builder = dllimport_attribute.DefinePInvokeMethod (
5344 container.TypeBuilder, method_name, flags,
5345 method.ReturnType, ParameterTypes);
5351 // for extern static method must be specified either DllImport attribute or MethodImplAttribute.
5352 // We are more strict than Microsoft and report CS0626 like error
5353 if (method.OptAttributes == null ||
5354 !method.OptAttributes.Contains (TypeManager.methodimpl_attr_type)) {
5355 Report.Error (626, method.Location,
5356 "`{0}' is marked as an external but has no DllImport attribute. Consider adding a DllImport attribute to specify the external implementation",
5357 member.GetSignatureForError ());
5362 if (builder == null) {
5363 builder = container.TypeBuilder.DefineMethod (
5364 method_name, flags, method.CallingConventions,
5365 method.ReturnType, ParameterTypes);
5369 #if GMCS_SOURCE && !MS_COMPATIBLE
5370 builder.SetGenericMethodSignature (
5371 flags, method.CallingConventions,
5372 method.ReturnType, ParameterTypes);
5379 public void Emit (DeclSpace parent)
5382 if ((flags & MethodAttributes.PinvokeImpl) == 0)
5383 ec = method.CreateEmitContext (parent, builder.GetILGenerator ());
5385 ec = method.CreateEmitContext (parent, null);
5387 method.ParameterInfo.ApplyAttributes (MethodBuilder);
5389 if (GenericMethod != null)
5390 GenericMethod.EmitAttributes ();
5392 ToplevelBlock block = method.Block;
5394 SourceMethod source = SourceMethod.Create (parent, MethodBuilder, method.Block);
5397 // Handle destructors specially
5399 // FIXME: This code generates buggy code
5401 if (member is Destructor)
5402 EmitDestructor (ec, block);
5404 ec.EmitTopBlock (method, block);
5407 source.CloseMethod ();
5410 void EmitDestructor (EmitContext ec, ToplevelBlock block)
5412 ILGenerator ig = ec.ig;
5414 Label finish = ig.DefineLabel ();
5416 block.SetDestructor ();
5418 ig.BeginExceptionBlock ();
5419 ec.ReturnLabel = finish;
5420 ec.HasReturnLabel = true;
5421 ec.EmitTopBlock (method, block);
5423 // ig.MarkLabel (finish);
5424 ig.BeginFinallyBlock ();
5426 if (ec.ContainerType.BaseType != null) {
5427 Expression member_lookup = Expression.MemberLookup (
5428 ec.ContainerType.BaseType, null, ec.ContainerType.BaseType,
5429 "Finalize", MemberTypes.Method, Expression.AllBindingFlags, method.Location);
5431 if (member_lookup != null){
5432 MethodGroupExpr base_destructor = ((MethodGroupExpr) member_lookup);
5434 ig.Emit (OpCodes.Ldarg_0);
5435 ig.Emit (OpCodes.Call, (MethodInfo) base_destructor.Methods [0]);
5439 ig.EndExceptionBlock ();
5440 //ig.MarkLabel (ec.ReturnLabel);
5441 ig.Emit (OpCodes.Ret);
5445 // TODO: Should derive from MethodCore
5446 public class Destructor : Method {
5448 static string[] attribute_targets = new string [] { "method" };
5450 public Destructor (DeclSpace parent, Expression return_type, int mod,
5451 string name, Parameters parameters, Attributes attrs,
5453 : base (parent, null, return_type, mod, false, new MemberName (name, l),
5457 public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
5459 if (a.Type == TypeManager.conditional_attribute_type) {
5460 Error_ConditionalAttributeIsNotValid ();
5464 base.ApplyAttributeBuilder (a, cb);
5467 public override string GetSignatureForError ()
5469 return Parent.GetSignatureForError () + ".~" + Parent.MemberName.Name + "()";
5472 public override string[] ValidAttributeTargets {
5474 return attribute_targets;
5479 abstract public class MemberBase : MemberCore {
5480 public Expression Type;
5481 public readonly DeclSpace ds;
5482 public readonly GenericMethod GenericMethod;
5485 // The type of this property / indexer / event
5487 protected Type member_type;
5488 public Type MemberType {
5490 if (member_type == null && Type != null) {
5491 IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
5492 Type = Type.ResolveAsTypeTerminal (rc, false);
5494 member_type = Type.Type;
5502 // The constructor is only exposed to our children
5504 protected MemberBase (DeclSpace parent, GenericMethod generic,
5505 Expression type, int mod, int allowed_mod, int def_mod,
5506 MemberName name, Attributes attrs)
5507 : base (parent, name, attrs)
5509 this.ds = generic != null ? generic : (DeclSpace) parent;
5511 ModFlags = Modifiers.Check (allowed_mod, mod, def_mod, Location);
5512 GenericMethod = generic;
5513 if (GenericMethod != null)
5514 GenericMethod.ModFlags = ModFlags;
5517 protected virtual bool CheckBase ()
5519 if ((ModFlags & Modifiers.PROTECTED) != 0 && Parent.PartialContainer.Kind == Kind.Struct) {
5520 Report.Error (666, Location, "`{0}': new protected member declared in struct", GetSignatureForError ());
5524 if ((RootContext.WarningLevel >= 4) &&
5525 ((Parent.ModFlags & Modifiers.SEALED) != 0) &&
5526 ((ModFlags & Modifiers.PROTECTED) != 0) &&
5527 ((ModFlags & Modifiers.OVERRIDE) == 0) && (Name != "Finalize")) {
5528 Report.Warning (628, 4, Location, "`{0}': new protected member declared in sealed class", GetSignatureForError ());
5533 protected virtual bool DoDefine ()
5535 if (MemberType == null)
5538 if ((Parent.ModFlags & Modifiers.SEALED) != 0 &&
5539 (ModFlags & (Modifiers.VIRTUAL|Modifiers.ABSTRACT)) != 0) {
5540 Report.Error (549, Location, "New virtual member `{0}' is declared in a sealed class `{1}'",
5541 GetSignatureForError (), Parent.GetSignatureForError ());
5545 // verify accessibility
5546 if (!Parent.AsAccessible (MemberType, ModFlags)) {
5547 Report.SymbolRelatedToPreviousError (MemberType);
5548 if (this is Property)
5549 Report.Error (53, Location,
5550 "Inconsistent accessibility: property type `" +
5551 TypeManager.CSharpName (MemberType) + "' is less " +
5552 "accessible than property `" + GetSignatureForError () + "'");
5553 else if (this is Indexer)
5554 Report.Error (54, Location,
5555 "Inconsistent accessibility: indexer return type `" +
5556 TypeManager.CSharpName (MemberType) + "' is less " +
5557 "accessible than indexer `" + GetSignatureForError () + "'");
5558 else if (this is MethodCore) {
5559 if (this is Operator)
5560 Report.Error (56, Location,
5561 "Inconsistent accessibility: return type `" +
5562 TypeManager.CSharpName (MemberType) + "' is less " +
5563 "accessible than operator `" + GetSignatureForError () + "'");
5565 Report.Error (50, Location,
5566 "Inconsistent accessibility: return type `" +
5567 TypeManager.CSharpName (MemberType) + "' is less " +
5568 "accessible than method `" + GetSignatureForError () + "'");
5570 Report.Error (52, Location,
5571 "Inconsistent accessibility: field type `" +
5572 TypeManager.CSharpName (MemberType) + "' is less " +
5573 "accessible than field `" + GetSignatureForError () + "'");
5581 protected bool IsTypePermitted ()
5583 if (MemberType == TypeManager.arg_iterator_type || MemberType == TypeManager.typed_reference_type) {
5584 Report.Error (610, Location, "Field or property cannot be of type `{0}'", TypeManager.CSharpName (MemberType));
5592 // Abstract class for all fields
5594 abstract public class FieldBase : MemberBase {
5595 public FieldBuilder FieldBuilder;
5596 public Status status;
5597 protected Expression initializer;
5600 public enum Status : byte {
5601 HAS_OFFSET = 4 // Used by FieldMember.
5604 static readonly string[] attribute_targets = new string [] { "field" };
5606 protected FieldBase (DeclSpace parent, Expression type, int mod,
5607 int allowed_mod, MemberName name, Attributes attrs)
5608 : base (parent, null, type, mod, allowed_mod | Modifiers.ABSTRACT, Modifiers.PRIVATE,
5611 if ((mod & Modifiers.ABSTRACT) != 0)
5612 Report.Error (681, Location, "The modifier 'abstract' is not valid on fields. Try using a property instead");
5615 public override AttributeTargets AttributeTargets {
5617 return AttributeTargets.Field;
5621 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
5623 if (a.Type == TypeManager.field_offset_attribute_type) {
5624 status |= Status.HAS_OFFSET;
5626 if (!Parent.PartialContainer.HasExplicitLayout) {
5627 Report.Error (636, Location, "The FieldOffset attribute can only be placed on members of types marked with the StructLayout(LayoutKind.Explicit)");
5631 if ((ModFlags & Modifiers.STATIC) != 0 || this is Const) {
5632 Report.Error (637, Location, "The FieldOffset attribute is not allowed on static or const fields");
5638 if (a.Type == TypeManager.fixed_buffer_attr_type) {
5639 Report.Error (1716, Location, "Do not use 'System.Runtime.CompilerServices.FixedBuffer' attribute. Use the 'fixed' field modifier instead");
5644 if (a.Type == TypeManager.marshal_as_attr_type) {
5645 UnmanagedMarshal marshal = a.GetMarshal (this);
5646 if (marshal != null) {
5647 FieldBuilder.SetMarshal (marshal);
5652 if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
5653 a.Error_InvalidSecurityParent ();
5657 FieldBuilder.SetCustomAttribute (cb);
5660 protected override bool CheckBase ()
5662 if (!base.CheckBase ())
5665 MemberInfo conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Name, false);
5666 if (conflict_symbol == null) {
5667 if ((ModFlags & Modifiers.NEW) != 0) {
5668 Report.Warning (109, 4, Location, "The member `{0}' does not hide an inherited member. The new keyword is not required", GetSignatureForError ());
5673 if ((ModFlags & (Modifiers.NEW | Modifiers.OVERRIDE)) == 0) {
5674 Report.SymbolRelatedToPreviousError (conflict_symbol);
5675 Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
5676 GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
5682 public override bool Define()
5684 if (MemberType == null || Type == null)
5687 if (MemberType == TypeManager.void_type) {
5688 // TODO: wrong location
5689 Expression.Error_VoidInvalidInTheContext (Location);
5693 if (MemberType.IsSealed && MemberType.IsAbstract) {
5694 Error_VariableOfStaticClass (Location, GetSignatureForError (), MemberType);
5701 if (!Parent.AsAccessible (MemberType, ModFlags)) {
5702 Report.Error (52, Location,
5703 "Inconsistent accessibility: field type `" +
5704 TypeManager.CSharpName (MemberType) + "' is less " +
5705 "accessible than field `" + GetSignatureForError () + "'");
5709 if (!IsTypePermitted ())
5716 // Represents header string for documentation comment.
5718 public override string DocCommentHeader {
5719 get { return "F:"; }
5722 public override void Emit ()
5724 if (OptAttributes != null) {
5725 OptAttributes.Emit ();
5728 if (((status & Status.HAS_OFFSET) == 0) && (ModFlags & Modifiers.STATIC) == 0 && Parent.PartialContainer.HasExplicitLayout) {
5729 Report.Error (625, Location, "`{0}': Instance field types marked with StructLayout(LayoutKind.Explicit) must have a FieldOffset attribute.", GetSignatureForError ());
5735 public static void Error_VariableOfStaticClass (Location loc, string variableName, Type staticClass)
5737 Report.SymbolRelatedToPreviousError (staticClass);
5738 Report.Error (723, loc, "`{0}': cannot declare variables of static types",
5742 public Expression Initializer {
5744 if (value != null) {
5745 this.initializer = value;
5750 protected virtual bool IsFieldClsCompliant {
5752 if (FieldBuilder == null)
5755 return AttributeTester.IsClsCompliant (FieldBuilder.FieldType);
5759 public override string[] ValidAttributeTargets
5762 return attribute_targets;
5766 protected override bool VerifyClsCompliance ()
5768 if (!base.VerifyClsCompliance ())
5771 if (!IsFieldClsCompliant) {
5772 Report.Error (3003, Location, "Type of `{0}' is not CLS-compliant", GetSignatureForError ());
5777 public void SetAssigned ()
5779 caching_flags |= Flags.IsAssigned;
5783 interface IFixedBuffer
5785 FieldInfo Element { get; }
5786 Type ElementType { get; }
5789 public class FixedFieldExternal: IFixedBuffer
5791 FieldInfo element_field;
5793 public FixedFieldExternal (FieldInfo fi)
5795 element_field = fi.FieldType.GetField (FixedField.FixedElementName);
5798 #region IFixedField Members
5800 public FieldInfo Element {
5802 return element_field;
5806 public Type ElementType {
5808 return element_field.FieldType;
5816 /// Fixed buffer implementation
5818 public class FixedField : FieldBase, IFixedBuffer
5820 public const string FixedElementName = "FixedElementField";
5821 static int GlobalCounter = 0;
5822 static object[] ctor_args = new object[] { (short)LayoutKind.Sequential };
5823 static FieldInfo[] fi;
5825 TypeBuilder fixed_buffer_type;
5826 FieldBuilder element;
5827 Expression size_expr;
5830 const int AllowedModifiers =
5833 Modifiers.PROTECTED |
5834 Modifiers.INTERNAL |
5837 public FixedField (DeclSpace parent, Expression type, int mod, string name,
5838 Expression size_expr, Attributes attrs, Location loc):
5839 base (parent, type, mod, AllowedModifiers, new MemberName (name, loc), attrs)
5841 if (RootContext.Version == LanguageVersion.ISO_1)
5842 Report.FeatureIsNotISO1 (loc, "fixed size buffers");
5844 this.size_expr = size_expr;
5847 public override bool Define()
5850 if ((ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) != 0)
5851 Report.Warning (-23, 1, Location, "Only private or internal fixed sized buffers are supported by .NET 1.x");
5854 if (Parent.PartialContainer.Kind != Kind.Struct) {
5855 Report.Error (1642, Location, "`{0}': Fixed size buffer fields may only be members of structs",
5856 GetSignatureForError ());
5860 if (!base.Define ())
5863 if (!TypeManager.IsPrimitiveType (MemberType)) {
5864 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",
5865 GetSignatureForError ());
5869 EmitContext ec = new EmitContext (this, Parent, Location, null, null, ModFlags);
5870 Constant c = size_expr.ResolveAsConstant (ec, this);
5874 IntConstant buffer_size_const = c.ImplicitConversionRequired (TypeManager.int32_type, Location) as IntConstant;
5875 if (buffer_size_const == null)
5878 buffer_size = buffer_size_const.Value;
5880 if (buffer_size <= 0) {
5881 Report.Error (1665, Location, "`{0}': Fixed size buffers must have a length greater than zero", GetSignatureForError ());
5885 int type_size = Expression.GetTypeSize (MemberType);
5887 if (buffer_size > int.MaxValue / type_size) {
5888 Report.Error (1664, Location, "Fixed size buffer `{0}' of length `{1}' and type `{2}' exceeded 2^31 limit",
5889 GetSignatureForError (), buffer_size.ToString (), TypeManager.CSharpName (MemberType));
5893 buffer_size *= type_size;
5896 string name = String.Format ("<{0}>__FixedBuffer{1}", Name, GlobalCounter++);
5898 fixed_buffer_type = Parent.TypeBuilder.DefineNestedType (name,
5899 TypeAttributes.NestedPublic | TypeAttributes.Sealed | TypeAttributes.BeforeFieldInit, TypeManager.value_type);
5900 element = fixed_buffer_type.DefineField (FixedElementName, MemberType, FieldAttributes.Public);
5901 RootContext.RegisterCompilerGeneratedType (fixed_buffer_type);
5903 FieldBuilder = Parent.TypeBuilder.DefineField (Name, fixed_buffer_type, Modifiers.FieldAttr (ModFlags));
5904 TypeManager.RegisterFieldBase (FieldBuilder, this);
5909 public override void Emit()
5912 fi = new FieldInfo [] { TypeManager.struct_layout_attribute_type.GetField ("Size") };
5914 object[] fi_val = new object[1];
5915 fi_val [0] = buffer_size;
5917 CustomAttributeBuilder cab = new CustomAttributeBuilder (TypeManager.struct_layout_attribute_ctor,
5918 ctor_args, fi, fi_val);
5919 fixed_buffer_type.SetCustomAttribute (cab);
5922 cab = new CustomAttributeBuilder (TypeManager.fixed_buffer_attr_ctor, new object[] { MemberType, buffer_size } );
5923 FieldBuilder.SetCustomAttribute (cab);
5928 protected override bool IsFieldClsCompliant {
5934 #region IFixedField Members
5936 public FieldInfo Element {
5942 public Type ElementType {
5952 // The Field class is used to represents class/struct fields during parsing.
5954 public class Field : FieldBase {
5956 // Modifiers allowed in a class declaration
5958 const int AllowedModifiers =
5961 Modifiers.PROTECTED |
5962 Modifiers.INTERNAL |
5965 Modifiers.VOLATILE |
5969 public Field (DeclSpace parent, Expression type, int mod, string name,
5970 Attributes attrs, Location loc)
5971 : base (parent, type, mod, AllowedModifiers, new MemberName (name, loc),
5976 public override bool Define ()
5978 if (!base.Define ())
5981 if (RootContext.WarningLevel > 1){
5982 Type ptype = Parent.TypeBuilder.BaseType;
5984 // ptype is only null for System.Object while compiling corlib.
5986 TypeContainer.FindMembers (
5987 ptype, MemberTypes.Method,
5988 BindingFlags.Public |
5989 BindingFlags.Static | BindingFlags.Instance,
5990 System.Type.FilterName, Name);
5994 if ((ModFlags & Modifiers.VOLATILE) != 0){
5995 if (!MemberType.IsClass){
5996 Type vt = MemberType;
5998 if (TypeManager.IsEnumType (vt))
5999 vt = TypeManager.EnumToUnderlying (MemberType);
6001 if (!((vt == TypeManager.bool_type) ||
6002 (vt == TypeManager.sbyte_type) ||
6003 (vt == TypeManager.byte_type) ||
6004 (vt == TypeManager.short_type) ||
6005 (vt == TypeManager.ushort_type) ||
6006 (vt == TypeManager.int32_type) ||
6007 (vt == TypeManager.uint32_type) ||
6008 (vt == TypeManager.char_type) ||
6009 (vt == TypeManager.float_type) ||
6010 (!vt.IsValueType))){
6011 Report.Error (677, Location, "`{0}': A volatile field cannot be of the type `{1}'",
6012 GetSignatureForError (), TypeManager.CSharpName (vt));
6017 if ((ModFlags & Modifiers.READONLY) != 0){
6018 Report.Error (678, Location, "`{0}': A field cannot be both volatile and readonly",
6019 GetSignatureForError ());
6024 FieldAttributes fa = Modifiers.FieldAttr (ModFlags);
6026 if (Parent.PartialContainer.Kind == Kind.Struct &&
6027 ((fa & FieldAttributes.Static) == 0) &&
6028 MemberType == Parent.TypeBuilder &&
6029 !TypeManager.IsBuiltinType (MemberType)){
6030 Report.Error (523, Location, "Struct member `" + Parent.Name + "." + Name +
6031 "' causes a cycle in the structure layout");
6036 FieldBuilder = Parent.TypeBuilder.DefineField (
6037 Name, MemberType, Modifiers.FieldAttr (ModFlags));
6039 TypeManager.RegisterFieldBase (FieldBuilder, this);
6041 catch (ArgumentException) {
6042 Report.Warning (-24, 1, Location, "The Microsoft runtime is unable to use [void|void*] as a field type, try using the Mono runtime.");
6046 if (initializer != null)
6047 Parent.PartialContainer.RegisterFieldForInitialization (this,
6048 new FieldInitializer (FieldBuilder, initializer, Parent));
6053 protected override bool VerifyClsCompliance ()
6055 if (!base.VerifyClsCompliance ())
6058 if ((ModFlags & Modifiers.VOLATILE) != 0) {
6059 Report.Warning (3026, 1, Location, "CLS-compliant field `{0}' cannot be volatile", GetSignatureForError ());
6067 // `set' and `get' accessors are represented with an Accessor.
6069 public class Accessor : IAnonymousHost {
6071 // Null if the accessor is empty, or a Block if not
6073 public const int AllowedModifiers =
6075 Modifiers.PROTECTED |
6076 Modifiers.INTERNAL |
6079 public ToplevelBlock Block;
6080 public Attributes Attributes;
6081 public Location Location;
6082 public int ModFlags;
6084 public ArrayList AnonymousMethods;
6086 public Accessor (ToplevelBlock b, int mod, Attributes attrs, Location loc)
6091 ModFlags = Modifiers.Check (AllowedModifiers, mod, 0, loc);
6094 public void SetYields ()
6099 public void AddAnonymousMethod (AnonymousMethodExpression ame)
6101 if (AnonymousMethods == null)
6102 AnonymousMethods = new ArrayList ();
6103 AnonymousMethods.Add (ame);
6107 // Ooouh Martin, templates are missing here.
6108 // When it will be possible move here a lot of child code and template method type.
6109 public abstract class AbstractPropertyEventMethod : MemberCore, IMethodData {
6110 protected MethodData method_data;
6111 protected ToplevelBlock block;
6112 protected ListDictionary declarative_security;
6114 // The accessor are created event if they are not wanted.
6115 // But we need them because their names are reserved.
6116 // Field says whether accessor will be emited or not
6117 public readonly bool IsDummy;
6119 protected readonly string prefix;
6121 ReturnParameter return_attributes;
6123 public AbstractPropertyEventMethod (PropertyBasedMember member, string prefix)
6124 : base (member.Parent, SetupName (prefix, member, member.Location), null)
6126 this.prefix = prefix;
6130 public AbstractPropertyEventMethod (InterfaceMemberBase member, Accessor accessor,
6132 : base (member.Parent, SetupName (prefix, member, accessor.Location),
6133 accessor.Attributes)
6135 this.prefix = prefix;
6136 this.block = accessor.Block;
6139 static MemberName SetupName (string prefix, InterfaceMemberBase member, Location loc)
6141 return new MemberName (member.MemberName.Left, prefix + member.ShortName, loc);
6144 public void UpdateName (InterfaceMemberBase member)
6146 SetMemberName (SetupName (prefix, member, Location));
6149 #region IMethodData Members
6151 public abstract Iterator Iterator {
6155 public ToplevelBlock Block {
6165 public CallingConventions CallingConventions {
6167 return CallingConventions.Standard;
6171 public bool IsExcluded ()
6176 GenericMethod IMethodData.GenericMethod {
6182 public MemberName MethodName {
6188 public Type[] ParameterTypes {
6190 return ParameterInfo.Types;
6194 public abstract Parameters ParameterInfo { get ; }
6195 public abstract Type ReturnType { get; }
6196 public abstract EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig);
6200 public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
6202 if (a.Type == TypeManager.cls_compliant_attribute_type || a.Type == TypeManager.obsolete_attribute_type ||
6203 a.Type == TypeManager.conditional_attribute_type) {
6204 Report.Error (1667, a.Location,
6205 "Attribute `{0}' is not valid on property or event accessors. It is valid on `{1}' declarations only",
6206 TypeManager.CSharpName (a.Type), a.GetValidTargets ());
6210 if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
6211 if (declarative_security == null)
6212 declarative_security = new ListDictionary ();
6213 a.ExtractSecurityPermissionSet (declarative_security);
6217 if (a.Target == AttributeTargets.Method) {
6218 method_data.MethodBuilder.SetCustomAttribute (cb);
6222 if (a.Target == AttributeTargets.ReturnValue) {
6223 if (return_attributes == null)
6224 return_attributes = new ReturnParameter (method_data.MethodBuilder, Location);
6226 return_attributes.ApplyAttributeBuilder (a, cb);
6230 ApplyToExtraTarget (a, cb);
6233 virtual protected void ApplyToExtraTarget (Attribute a, CustomAttributeBuilder cb)
6235 System.Diagnostics.Debug.Fail ("You forgot to define special attribute target handling");
6238 // It is not supported for the accessors
6239 public sealed override bool Define()
6241 throw new NotSupportedException ();
6244 public void Emit (DeclSpace parent)
6246 EmitMethod (parent);
6248 if (OptAttributes != null)
6249 OptAttributes.Emit ();
6251 if (declarative_security != null) {
6252 foreach (DictionaryEntry de in declarative_security) {
6253 method_data.MethodBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
6260 protected virtual void EmitMethod (DeclSpace parent)
6262 method_data.Emit (parent);
6265 public override bool IsClsComplianceRequired()
6270 public bool IsDuplicateImplementation (MethodCore method)
6272 if (!MemberName.Equals (method.MemberName))
6275 Type[] param_types = method.ParameterTypes;
6277 if (param_types.Length != ParameterTypes.Length)
6280 for (int i = 0; i < param_types.Length; i++)
6281 if (param_types [i] != ParameterTypes [i])
6284 Report.SymbolRelatedToPreviousError (method);
6285 Report.Error (111, Location, TypeContainer.Error111, method.GetSignatureForError ());
6289 public override bool IsUsed
6299 public new Location Location {
6301 return base.Location;
6306 // Represents header string for documentation comment.
6308 public override string DocCommentHeader {
6309 get { throw new InvalidOperationException ("Unexpected attempt to get doc comment from " + this.GetType () + "."); }
6315 // Properties and Indexers both generate PropertyBuilders, we use this to share
6316 // their common bits.
6318 abstract public class PropertyBase : PropertyBasedMember {
6320 public class GetMethod : PropertyMethod
6322 static string[] attribute_targets = new string [] { "method", "return" };
6324 public GetMethod (PropertyBase method):
6325 base (method, "get_")
6329 public GetMethod (PropertyBase method, Accessor accessor):
6330 base (method, accessor, "get_")
6334 public override MethodBuilder Define (DeclSpace parent)
6336 base.Define (parent);
6338 method_data = new MethodData (method, ModFlags, flags, this);
6340 if (!method_data.Define (parent))
6343 return method_data.MethodBuilder;
6346 public override Type ReturnType {
6348 return method.MemberType;
6352 public override Parameters ParameterInfo {
6354 return Parameters.EmptyReadOnlyParameters;
6358 public override string[] ValidAttributeTargets {
6360 return attribute_targets;
6365 public class SetMethod : PropertyMethod {
6367 static string[] attribute_targets = new string [] { "method", "param", "return" };
6368 ImplicitParameter param_attr;
6369 protected Parameters parameters;
6371 public SetMethod (PropertyBase method):
6372 base (method, "set_")
6376 public SetMethod (PropertyBase method, Accessor accessor):
6377 base (method, accessor, "set_")
6381 protected override void ApplyToExtraTarget(Attribute a, CustomAttributeBuilder cb)
6383 if (a.Target == AttributeTargets.Parameter) {
6384 if (param_attr == null)
6385 param_attr = new ImplicitParameter (method_data.MethodBuilder);
6387 param_attr.ApplyAttributeBuilder (a, cb);
6391 base.ApplyAttributeBuilder (a, cb);
6394 public override Parameters ParameterInfo {
6396 if (parameters == null)
6397 DefineParameters ();
6402 protected virtual void DefineParameters ()
6404 parameters = new Parameters (
6405 new Parameter[] { new Parameter (method.MemberType, "value", Parameter.Modifier.NONE, null, Location) },
6406 new Type[] { method.MemberType });
6409 public override MethodBuilder Define (DeclSpace parent)
6414 base.Define (parent);
6416 method_data = new MethodData (method, ModFlags, flags, this);
6418 if (!method_data.Define (parent))
6421 return method_data.MethodBuilder;
6424 public override Type ReturnType {
6426 return TypeManager.void_type;
6430 public override string[] ValidAttributeTargets {
6432 return attribute_targets;
6437 static string[] attribute_targets = new string [] { "property" };
6439 public abstract class PropertyMethod : AbstractPropertyEventMethod
6441 protected readonly PropertyBase method;
6442 protected MethodAttributes flags;
6444 ArrayList anonymous_methods;
6447 public PropertyMethod (PropertyBase method, string prefix)
6448 : base (method, prefix)
6450 this.method = method;
6453 public PropertyMethod (PropertyBase method, Accessor accessor,
6455 : base (method, accessor, prefix)
6457 this.method = method;
6458 this.ModFlags = accessor.ModFlags;
6459 yields = accessor.Yields;
6460 anonymous_methods = accessor.AnonymousMethods;
6462 if (accessor.ModFlags != 0 && RootContext.Version == LanguageVersion.ISO_1) {
6463 Report.FeatureIsNotISO1 (Location, "access modifiers on properties");
6467 public override Iterator Iterator {
6468 get { return iterator; }
6471 public override AttributeTargets AttributeTargets {
6473 return AttributeTargets.Method;
6477 public override bool IsClsComplianceRequired ()
6479 return method.IsClsComplianceRequired ();
6482 public bool ResolveMembers ()
6485 iterator = Iterator.CreateIterator (this, Parent, null, ModFlags);
6486 if (iterator == null)
6490 if (anonymous_methods != null) {
6491 foreach (AnonymousMethodExpression ame in anonymous_methods) {
6492 if (!ame.CreateAnonymousHelpers ())
6500 public virtual MethodBuilder Define (DeclSpace parent)
6502 if (!method.CheckAbstractAndExtern (block != null))
6505 TypeContainer container = parent.PartialContainer;
6508 // Check for custom access modifier
6510 if (ModFlags == 0) {
6511 ModFlags = method.ModFlags;
6512 flags = method.flags;
6514 if (container.Kind == Kind.Interface)
6515 Report.Error (275, Location, "`{0}': accessibility modifiers may not be used on accessors in an interface",
6516 GetSignatureForError ());
6518 if ((method.ModFlags & Modifiers.ABSTRACT) != 0 && (ModFlags & Modifiers.PRIVATE) != 0) {
6519 Report.Error (442, Location, "`{0}': abstract properties cannot have private accessors", GetSignatureForError ());
6522 CheckModifiers (ModFlags);
6523 ModFlags |= (method.ModFlags & (~Modifiers.Accessibility));
6524 ModFlags |= Modifiers.PROPERTY_CUSTOM;
6525 flags = Modifiers.MethodAttr (ModFlags);
6526 flags |= (method.flags & (~MethodAttributes.MemberAccessMask));
6532 public bool HasCustomAccessModifier
6535 return (ModFlags & Modifiers.PROPERTY_CUSTOM) != 0;
6539 public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
6541 return new EmitContext (method,
6542 ds, method.ds, method.Location, ig, ReturnType,
6543 method.ModFlags, false);
6546 public override ObsoleteAttribute GetObsoleteAttribute ()
6548 return method.GetObsoleteAttribute ();
6551 public override string GetSignatureForError()
6553 return method.GetSignatureForError () + '.' + prefix.Substring (0, 3);
6556 void CheckModifiers (int modflags)
6559 int mflags = method.ModFlags & Modifiers.Accessibility;
6561 if ((mflags & Modifiers.PUBLIC) != 0) {
6562 flags |= Modifiers.PROTECTED | Modifiers.INTERNAL | Modifiers.PRIVATE;
6564 else if ((mflags & Modifiers.PROTECTED) != 0) {
6565 if ((mflags & Modifiers.INTERNAL) != 0)
6566 flags |= Modifiers.PROTECTED | Modifiers.INTERNAL;
6568 flags |= Modifiers.PRIVATE;
6570 else if ((mflags & Modifiers.INTERNAL) != 0)
6571 flags |= Modifiers.PRIVATE;
6573 if ((mflags == modflags) || (modflags & (~flags)) != 0) {
6574 Report.Error (273, Location,
6575 "The accessibility modifier of the `{0}' accessor must be more restrictive than the modifier of the property or indexer `{1}'",
6576 GetSignatureForError (), method.GetSignatureForError ());
6580 public override bool MarkForDuplicationCheck ()
6582 caching_flags |= Flags.TestMethodDuplication;
6587 public PropertyMethod Get, Set;
6588 public PropertyBuilder PropertyBuilder;
6589 public MethodBuilder GetBuilder, SetBuilder;
6591 protected bool define_set_first = false;
6593 public PropertyBase (DeclSpace parent, Expression type, int mod_flags,
6594 int allowed_mod, bool is_iface, MemberName name,
6595 Attributes attrs, bool define_set_first)
6596 : base (parent, null, type, mod_flags, allowed_mod, is_iface, name, attrs)
6598 this.define_set_first = define_set_first;
6601 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
6603 if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
6604 a.Error_InvalidSecurityParent ();
6608 PropertyBuilder.SetCustomAttribute (cb);
6611 public override AttributeTargets AttributeTargets {
6613 return AttributeTargets.Property;
6617 public override bool Define ()
6622 if (!IsTypePermitted ())
6628 protected override bool DoDefine ()
6630 if (!base.DoDefine ())
6634 // Accessors modifiers check
6636 if (Get.ModFlags != 0 && Set.ModFlags != 0) {
6637 Report.Error (274, Location, "`{0}': Cannot specify accessibility modifiers for both accessors of the property or indexer",
6638 GetSignatureForError ());
6642 if ((Get.IsDummy || Set.IsDummy)
6643 && (Get.ModFlags != 0 || Set.ModFlags != 0) && (ModFlags & Modifiers.OVERRIDE) == 0) {
6644 Report.Error (276, Location,
6645 "`{0}': accessibility modifiers on accessors may only be used if the property or indexer has both a get and a set accessor",
6646 GetSignatureForError ());
6650 if (MemberType.IsAbstract && MemberType.IsSealed) {
6651 Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
6663 GetBuilder = Get.Define (Parent);
6664 return GetBuilder != null;
6667 bool DefineSet (bool define)
6669 if (!define || Set.IsDummy)
6672 SetBuilder = Set.Define (Parent);
6673 return SetBuilder != null;
6676 protected bool DefineAccessors ()
6678 return DefineSet (define_set_first) &&
6680 DefineSet (!define_set_first);
6683 protected abstract PropertyInfo ResolveBaseProperty ();
6685 // TODO: rename to Resolve......
6686 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
6688 PropertyInfo base_property = ResolveBaseProperty ();
6689 if (base_property == null)
6692 base_ret_type = base_property.PropertyType;
6693 MethodInfo get_accessor = base_property.GetGetMethod (true);
6694 MethodInfo set_accessor = base_property.GetSetMethod (true);
6695 MethodAttributes get_accessor_access, set_accessor_access;
6697 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
6698 if (Get != null && !Get.IsDummy && get_accessor == null) {
6699 Report.SymbolRelatedToPreviousError (base_property);
6700 Report.Error (545, Location, "`{0}.get': cannot override because `{1}' does not have an overridable get accessor", GetSignatureForError (), TypeManager.GetFullNameSignature (base_property));
6703 if (Set != null && !Set.IsDummy && set_accessor == null) {
6704 Report.SymbolRelatedToPreviousError (base_property);
6705 Report.Error (546, Location, "`{0}.set': cannot override because `{1}' does not have an overridable set accessor", GetSignatureForError (), TypeManager.GetFullNameSignature (base_property));
6710 // Check base class accessors access
6713 // TODO: rewrite to reuse Get|Set.CheckAccessModifiers and share code there
6714 get_accessor_access = set_accessor_access = 0;
6715 if ((ModFlags & Modifiers.NEW) == 0) {
6716 if (get_accessor != null) {
6717 MethodAttributes get_flags = Modifiers.MethodAttr (Get.ModFlags != 0 ? Get.ModFlags : ModFlags);
6718 get_accessor_access = (get_accessor.Attributes & MethodAttributes.MemberAccessMask);
6720 if (!Get.IsDummy && !CheckAccessModifiers (get_flags & MethodAttributes.MemberAccessMask, get_accessor_access, get_accessor))
6721 Error_CannotChangeAccessModifiers (get_accessor, get_accessor_access, ".get");
6724 if (set_accessor != null) {
6725 MethodAttributes set_flags = Modifiers.MethodAttr (Set.ModFlags != 0 ? Set.ModFlags : ModFlags);
6726 set_accessor_access = (set_accessor.Attributes & MethodAttributes.MemberAccessMask);
6728 if (!Set.IsDummy && !CheckAccessModifiers (set_flags & MethodAttributes.MemberAccessMask, set_accessor_access, set_accessor))
6729 Error_CannotChangeAccessModifiers (set_accessor, set_accessor_access, ".set");
6734 // Get the less restrictive access
6736 return get_accessor_access > set_accessor_access ? get_accessor : set_accessor;
6739 public override void Emit ()
6742 // The PropertyBuilder can be null for explicit implementations, in that
6743 // case, we do not actually emit the ".property", so there is nowhere to
6744 // put the attribute
6746 if (PropertyBuilder != null && OptAttributes != null)
6747 OptAttributes.Emit ();
6759 /// Tests whether accessors are not in collision with some method (CS0111)
6761 public bool AreAccessorsDuplicateImplementation (MethodCore mc)
6763 return Get.IsDuplicateImplementation (mc) || Set.IsDuplicateImplementation (mc);
6766 public override bool IsUsed
6772 return Get.IsUsed | Set.IsUsed;
6776 protected override void SetMemberName (MemberName new_name)
6778 base.SetMemberName (new_name);
6780 Get.UpdateName (this);
6781 Set.UpdateName (this);
6784 public override string[] ValidAttributeTargets {
6786 return attribute_targets;
6791 // Represents header string for documentation comment.
6793 public override string DocCommentHeader {
6794 get { return "P:"; }
6798 public class Property : PropertyBase {
6799 const int AllowedModifiers =
6802 Modifiers.PROTECTED |
6803 Modifiers.INTERNAL |
6807 Modifiers.OVERRIDE |
6808 Modifiers.ABSTRACT |
6811 Modifiers.METHOD_YIELDS |
6814 const int AllowedInterfaceModifiers =
6817 public Property (DeclSpace parent, Expression type, int mod, bool is_iface,
6818 MemberName name, Attributes attrs, Accessor get_block,
6819 Accessor set_block, bool define_set_first)
6820 : base (parent, type, mod,
6821 is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
6822 is_iface, name, attrs, define_set_first)
6824 if (get_block == null)
6825 Get = new GetMethod (this);
6827 Get = new GetMethod (this, get_block);
6829 if (set_block == null)
6830 Set = new SetMethod (this);
6832 Set = new SetMethod (this, set_block);
6835 public override bool Define ()
6837 if (!DoDefineBase ())
6840 if (!base.Define ())
6846 flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
6848 if (!DefineAccessors ())
6851 // FIXME - PropertyAttributes.HasDefault ?
6853 PropertyBuilder = Parent.TypeBuilder.DefineProperty (
6854 MemberName.ToString (), PropertyAttributes.None, MemberType, null);
6857 PropertyBuilder.SetGetMethod (GetBuilder);
6860 PropertyBuilder.SetSetMethod (SetBuilder);
6862 TypeManager.RegisterProperty (PropertyBuilder, this);
6866 protected override PropertyInfo ResolveBaseProperty ()
6868 return Parent.PartialContainer.BaseCache.FindMemberToOverride (
6869 Parent.TypeBuilder, Name, Parameters.EmptyReadOnlyParameters.Types, null, true) as PropertyInfo;
6874 /// Gigantic workaround for lameness in SRE follows :
6875 /// This class derives from EventInfo and attempts to basically
6876 /// wrap around the EventBuilder so that FindMembers can quickly
6877 /// return this in it search for members
6879 public class MyEventBuilder : EventInfo {
6882 // We use this to "point" to our Builder which is
6883 // not really a MemberInfo
6885 EventBuilder MyBuilder;
6888 // We "catch" and wrap these methods
6890 MethodInfo raise, remove, add;
6892 EventAttributes attributes;
6893 Type declaring_type, reflected_type, event_type;
6898 public MyEventBuilder (Event ev, TypeBuilder type_builder, string name, EventAttributes event_attr, Type event_type)
6900 MyBuilder = type_builder.DefineEvent (name, event_attr, event_type);
6902 // And now store the values in our own fields.
6904 declaring_type = type_builder;
6906 reflected_type = type_builder;
6908 attributes = event_attr;
6911 this.event_type = event_type;
6915 // Methods that you have to override. Note that you only need
6916 // to "implement" the variants that take the argument (those are
6917 // the "abstract" methods, the others (GetAddMethod()) are
6920 public override MethodInfo GetAddMethod (bool nonPublic)
6925 public override MethodInfo GetRemoveMethod (bool nonPublic)
6930 public override MethodInfo GetRaiseMethod (bool nonPublic)
6936 // These methods make "MyEventInfo" look like a Builder
6938 public void SetRaiseMethod (MethodBuilder raiseMethod)
6940 raise = raiseMethod;
6941 MyBuilder.SetRaiseMethod (raiseMethod);
6944 public void SetRemoveOnMethod (MethodBuilder removeMethod)
6946 remove = removeMethod;
6947 MyBuilder.SetRemoveOnMethod (removeMethod);
6950 public void SetAddOnMethod (MethodBuilder addMethod)
6953 MyBuilder.SetAddOnMethod (addMethod);
6956 public void SetCustomAttribute (CustomAttributeBuilder cb)
6958 MyBuilder.SetCustomAttribute (cb);
6961 public override object [] GetCustomAttributes (bool inherit)
6963 // FIXME : There's nothing which can be seemingly done here because
6964 // we have no way of getting at the custom attribute objects of the
6969 public override object [] GetCustomAttributes (Type t, bool inherit)
6971 // FIXME : Same here !
6975 public override bool IsDefined (Type t, bool b)
6980 public override EventAttributes Attributes {
6986 public override string Name {
6992 public override Type DeclaringType {
6994 return declaring_type;
6998 public override Type ReflectedType {
7000 return reflected_type;
7004 public Type EventType {
7010 public void SetUsed ()
7012 if (my_event != null) {
7013 // my_event.SetAssigned ();
7014 my_event.SetMemberIsUsed ();
7020 /// For case when event is declared like property (with add and remove accessors).
7022 public class EventProperty: Event {
7023 abstract class AEventPropertyAccessor : AEventAccessor
7025 public AEventPropertyAccessor (Event method, Accessor accessor, string prefix):
7026 base (method, accessor, prefix)
7030 public override MethodBuilder Define (DeclSpace ds)
7032 method.CheckAbstractAndExtern (block != null);
7033 return base.Define (ds);
7037 sealed class AddDelegateMethod: AEventPropertyAccessor
7039 public AddDelegateMethod (Event method, Accessor accessor):
7040 base (method, accessor, "add_")
7044 protected override MethodInfo DelegateMethodInfo {
7046 return TypeManager.delegate_combine_delegate_delegate;
7051 sealed class RemoveDelegateMethod: AEventPropertyAccessor
7053 public RemoveDelegateMethod (Event method, Accessor accessor):
7054 base (method, accessor, "remove_")
7058 protected override MethodInfo DelegateMethodInfo {
7060 return TypeManager.delegate_remove_delegate_delegate;
7066 static readonly string[] attribute_targets = new string [] { "event" }; // "property" target was disabled for 2.0 version
7068 public EventProperty (DeclSpace parent, Expression type, int mod_flags,
7069 bool is_iface, MemberName name,
7070 Attributes attrs, Accessor add, Accessor remove)
7071 : base (parent, type, mod_flags, is_iface, name, attrs)
7073 Add = new AddDelegateMethod (this, add);
7074 Remove = new RemoveDelegateMethod (this, remove);
7077 public override bool Define()
7079 if (!base.Define ())
7088 public override string[] ValidAttributeTargets {
7090 return attribute_targets;
7096 /// Event is declared like field.
7098 public class EventField : Event {
7099 abstract class EventFieldAccessor : AEventAccessor
7101 protected EventFieldAccessor (Event method, string prefix)
7102 : base (method, prefix)
7106 protected override void EmitMethod(DeclSpace parent)
7108 if ((method.ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
7111 ILGenerator ig = method_data.MethodBuilder.GetILGenerator ();
7113 // TODO: because we cannot use generics yet
7114 FieldInfo field_info = ((EventField)method).FieldBuilder;
7116 method_data.MethodBuilder.SetImplementationFlags (MethodImplAttributes.Synchronized);
7117 if ((method.ModFlags & Modifiers.STATIC) != 0) {
7118 ig.Emit (OpCodes.Ldsfld, field_info);
7119 ig.Emit (OpCodes.Ldarg_0);
7120 ig.Emit (OpCodes.Call, DelegateMethodInfo);
7121 ig.Emit (OpCodes.Castclass, method.MemberType);
7122 ig.Emit (OpCodes.Stsfld, field_info);
7124 ig.Emit (OpCodes.Ldarg_0);
7125 ig.Emit (OpCodes.Ldarg_0);
7126 ig.Emit (OpCodes.Ldfld, field_info);
7127 ig.Emit (OpCodes.Ldarg_1);
7128 ig.Emit (OpCodes.Call, DelegateMethodInfo);
7129 ig.Emit (OpCodes.Castclass, method.MemberType);
7130 ig.Emit (OpCodes.Stfld, field_info);
7132 ig.Emit (OpCodes.Ret);
7136 sealed class AddDelegateMethod: EventFieldAccessor
7138 public AddDelegateMethod (Event method):
7139 base (method, "add_")
7143 protected override MethodInfo DelegateMethodInfo {
7145 return TypeManager.delegate_combine_delegate_delegate;
7150 sealed class RemoveDelegateMethod: EventFieldAccessor
7152 public RemoveDelegateMethod (Event method):
7153 base (method, "remove_")
7157 protected override MethodInfo DelegateMethodInfo {
7159 return TypeManager.delegate_remove_delegate_delegate;
7165 static readonly string[] attribute_targets = new string [] { "event", "field", "method" };
7166 static readonly string[] attribute_targets_interface = new string[] { "event", "method" };
7168 public FieldBuilder FieldBuilder;
7169 public Expression Initializer;
7171 public EventField (DeclSpace parent, Expression type, int mod_flags,
7172 bool is_iface, MemberName name,
7174 : base (parent, type, mod_flags, is_iface, name, attrs)
7176 Add = new AddDelegateMethod (this);
7177 Remove = new RemoveDelegateMethod (this);
7180 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
7182 if (a.Target == AttributeTargets.Field) {
7183 FieldBuilder.SetCustomAttribute (cb);
7187 if (a.Target == AttributeTargets.Method) {
7188 int errors = Report.Errors;
7189 Add.ApplyAttributeBuilder (a, cb);
7190 if (errors == Report.Errors)
7191 Remove.ApplyAttributeBuilder (a, cb);
7195 base.ApplyAttributeBuilder (a, cb);
7198 public override bool Define()
7200 if (!base.Define ())
7206 // FIXME: We are unable to detect whether generic event is used because
7207 // we are using FieldExpr instead of EventExpr for event access in that
7208 // case. When this issue will be fixed this hack can be removed.
7209 if (TypeManager.IsGenericType (MemberType))
7212 FieldBuilder = Parent.TypeBuilder.DefineField (
7214 FieldAttributes.Private | ((ModFlags & Modifiers.STATIC) != 0 ? FieldAttributes.Static : 0));
7215 TypeManager.RegisterEventField (EventBuilder, this);
7217 if (Initializer != null) {
7218 if (((ModFlags & Modifiers.ABSTRACT) != 0)) {
7219 Report.Error (74, Location, "`{0}': abstract event cannot have an initializer",
7220 GetSignatureForError ());
7224 Parent.PartialContainer.RegisterFieldForInitialization (this,
7225 new FieldInitializer (FieldBuilder, Initializer, Parent));
7231 public override string[] ValidAttributeTargets
7234 return IsInterface ? attribute_targets_interface : attribute_targets;
7239 public abstract class Event : PropertyBasedMember {
7240 public abstract class AEventAccessor : AbstractPropertyEventMethod
7242 protected readonly Event method;
7243 ImplicitParameter param_attr;
7245 static readonly string[] attribute_targets = new string [] { "method", "param", "return" };
7247 protected AEventAccessor (Event method, string prefix)
7248 : base (method, prefix)
7250 this.method = method;
7253 protected AEventAccessor (Event method, Accessor accessor, string prefix)
7254 : base (method, accessor, prefix)
7256 this.method = method;
7259 public override Iterator Iterator {
7260 get { return null; }
7263 protected override void ApplyToExtraTarget(Attribute a, CustomAttributeBuilder cb)
7265 if (a.Target == AttributeTargets.Parameter) {
7266 if (param_attr == null)
7267 param_attr = new ImplicitParameter (method_data.MethodBuilder);
7269 param_attr.ApplyAttributeBuilder (a, cb);
7273 base.ApplyAttributeBuilder (a, cb);
7276 public override AttributeTargets AttributeTargets {
7278 return AttributeTargets.Method;
7282 public override bool IsClsComplianceRequired ()
7284 return method.IsClsComplianceRequired ();
7287 public virtual MethodBuilder Define (DeclSpace parent)
7289 method_data = new MethodData (method, method.ModFlags,
7290 method.flags | MethodAttributes.HideBySig | MethodAttributes.SpecialName, this);
7292 if (!method_data.Define (parent))
7295 MethodBuilder mb = method_data.MethodBuilder;
7296 ParameterInfo.ApplyAttributes (mb);
7300 protected abstract MethodInfo DelegateMethodInfo { get; }
7302 public override Type ReturnType {
7304 return TypeManager.void_type;
7308 public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
7310 return new EmitContext (
7311 ds, method.Parent, Location, ig, ReturnType,
7312 method.ModFlags, false);
7315 public override ObsoleteAttribute GetObsoleteAttribute ()
7317 return method.GetObsoleteAttribute ();
7320 public override string[] ValidAttributeTargets {
7322 return attribute_targets;
7326 public override Parameters ParameterInfo {
7328 return method.parameters;
7334 const int AllowedModifiers =
7337 Modifiers.PROTECTED |
7338 Modifiers.INTERNAL |
7343 Modifiers.OVERRIDE |
7345 Modifiers.ABSTRACT |
7348 const int AllowedInterfaceModifiers =
7351 public AEventAccessor Add, Remove;
7352 public MyEventBuilder EventBuilder;
7353 public MethodBuilder AddBuilder, RemoveBuilder;
7355 Parameters parameters;
7357 protected Event (DeclSpace parent, Expression type, int mod_flags,
7358 bool is_iface, MemberName name, Attributes attrs)
7359 : base (parent, null, type, mod_flags,
7360 is_iface ? AllowedInterfaceModifiers : AllowedModifiers, is_iface,
7365 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
7367 if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
7368 a.Error_InvalidSecurityParent ();
7372 EventBuilder.SetCustomAttribute (cb);
7375 public bool AreAccessorsDuplicateImplementation (MethodCore mc)
7377 return Add.IsDuplicateImplementation (mc) || Remove.IsDuplicateImplementation (mc);
7380 public override AttributeTargets AttributeTargets {
7382 return AttributeTargets.Event;
7386 public override bool Define ()
7388 if (!DoDefineBase ())
7394 if (!TypeManager.IsDelegateType (MemberType)) {
7395 Report.Error (66, Location, "`{0}': event must be of a delegate type", GetSignatureForError ());
7399 parameters = new Parameters (
7400 new Parameter[] { new Parameter (MemberType, "value", Parameter.Modifier.NONE, null, Location) },
7401 new Type[] { MemberType } );
7407 // Now define the accessors
7410 AddBuilder = Add.Define (Parent);
7411 if (AddBuilder == null)
7414 RemoveBuilder = Remove.Define (Parent);
7415 if (RemoveBuilder == null)
7418 EventBuilder = new MyEventBuilder (this, Parent.TypeBuilder, Name, EventAttributes.None, MemberType);
7419 EventBuilder.SetAddOnMethod (AddBuilder);
7420 EventBuilder.SetRemoveOnMethod (RemoveBuilder);
7424 public override void Emit ()
7426 if (OptAttributes != null) {
7427 OptAttributes.Emit ();
7431 Remove.Emit (Parent);
7436 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
7438 MethodInfo mi = (MethodInfo) Parent.PartialContainer.BaseCache.FindBaseEvent (
7439 Parent.TypeBuilder, Name);
7444 ParameterData pd = TypeManager.GetParameterData (mi);
7445 base_ret_type = pd.ParameterType (0);
7450 // Represents header string for documentation comment.
7452 public override string DocCommentHeader {
7453 get { return "E:"; }
7458 public class Indexer : PropertyBase {
7460 class GetIndexerMethod : GetMethod
7462 public GetIndexerMethod (PropertyBase method):
7467 public GetIndexerMethod (PropertyBase method, Accessor accessor):
7468 base (method, accessor)
7472 public override Parameters ParameterInfo {
7474 return ((Indexer)method).parameters;
7479 class SetIndexerMethod: SetMethod
7481 public SetIndexerMethod (PropertyBase method):
7486 public SetIndexerMethod (PropertyBase method, Accessor accessor):
7487 base (method, accessor)
7491 protected override void DefineParameters ()
7493 parameters = Parameters.MergeGenerated (((Indexer)method).parameters,
7494 new Parameter (method.MemberType, "value", Parameter.Modifier.NONE, null, method.Location));
7498 const int AllowedModifiers =
7501 Modifiers.PROTECTED |
7502 Modifiers.INTERNAL |
7506 Modifiers.OVERRIDE |
7511 const int AllowedInterfaceModifiers =
7514 public readonly Parameters parameters;
7516 public Indexer (DeclSpace parent, Expression type, MemberName name, int mod,
7517 bool is_iface, Parameters parameters, Attributes attrs,
7518 Accessor get_block, Accessor set_block, bool define_set_first)
7519 : base (parent, type, mod,
7520 is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
7521 is_iface, name, attrs, define_set_first)
7523 this.parameters = parameters;
7525 if (get_block == null)
7526 Get = new GetIndexerMethod (this);
7528 Get = new GetIndexerMethod (this, get_block);
7530 if (set_block == null)
7531 Set = new SetIndexerMethod (this);
7533 Set = new SetIndexerMethod (this, set_block);
7536 protected override bool CheckForDuplications ()
7538 ArrayList ar = Parent.PartialContainer.Indexers;
7540 int arLen = ar.Count;
7542 for (int i = 0; i < arLen; i++) {
7543 Indexer m = (Indexer) ar [i];
7544 if (IsDuplicateImplementation (m))
7552 bool IsDuplicateImplementation (Indexer indexer)
7554 if (this == indexer)
7557 if (!MemberName.Equals (indexer.MemberName))
7560 Type[] param_types = indexer.parameters.Types;
7562 // When it is not yet defined
7563 if (param_types == null)
7566 if (param_types.Length != parameters.Count)
7569 for (int i = 0; i < param_types.Length; i++)
7570 if (param_types [i] != parameters.Types [i])
7573 Report.SymbolRelatedToPreviousError (indexer);
7574 Report.Error (111, Location, TypeContainer.Error111, indexer.GetSignatureForError ());
7579 public override bool Define ()
7581 if (!DoDefineBase ())
7584 if (!base.Define ())
7587 if (!parameters.Resolve (ds))
7590 if (!CheckParameters (parameters))
7593 if (MemberType == TypeManager.void_type) {
7594 Report.Error (620, Location, "Indexers cannot have void type");
7598 if (OptAttributes != null) {
7599 Attribute indexer_attr = OptAttributes.Search (TypeManager.indexer_name_type);
7600 if (indexer_attr != null) {
7601 // Remove the attribute from the list because it is not emitted
7602 OptAttributes.Attrs.Remove (indexer_attr);
7604 string name = indexer_attr.GetIndexerAttributeValue ();
7610 if (IsExplicitImpl) {
7611 Report.Error (415, indexer_attr.Location,
7612 "The `IndexerName' attribute is valid only on an " +
7613 "indexer that is not an explicit interface member declaration");
7617 if ((ModFlags & Modifiers.OVERRIDE) != 0) {
7618 Report.Error (609, indexer_attr.Location,
7619 "Cannot set the `IndexerName' attribute on an indexer marked override");
7625 if (InterfaceType != null) {
7626 string base_IndexerName = TypeManager.IndexerPropertyName (InterfaceType);
7627 if (base_IndexerName != Name)
7628 ShortName = base_IndexerName;
7631 if (!Parent.PartialContainer.AddMember (this) ||
7632 !Parent.PartialContainer.AddMember (Get) || !Parent.PartialContainer.AddMember (Set))
7638 flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
7640 if (!DefineAccessors ())
7644 // Setup iterator if we are one
7645 if ((ModFlags & Modifiers.METHOD_YIELDS) != 0){
7646 Iterator iterator = Iterator.CreateIterator (Get, Parent, null, ModFlags);
7647 if (iterator == null)
7653 // Now name the parameters
7655 Parameter [] p = parameters.FixedParameters;
7657 // TODO: should be done in parser and it needs to do cycle
7658 if ((p [0].ModFlags & Parameter.Modifier.ISBYREF) != 0) {
7659 CSharpParser.Error_ParameterModifierNotValid (Location);
7664 PropertyBuilder = Parent.TypeBuilder.DefineProperty (
7665 Name, PropertyAttributes.None, MemberType, parameters.Types);
7668 PropertyBuilder.SetGetMethod (GetBuilder);
7671 PropertyBuilder.SetSetMethod (SetBuilder);
7673 TypeManager.RegisterIndexer (PropertyBuilder, GetBuilder, SetBuilder, parameters.Types);
7678 public override string GetDocCommentName (DeclSpace ds)
7680 return DocUtil.GetMethodDocCommentName (this, parameters, ds);
7683 public override string GetSignatureForError ()
7685 StringBuilder sb = new StringBuilder (Parent.GetSignatureForError ());
7686 if (MemberName.Left != null) {
7688 sb.Append (MemberName.Left);
7691 sb.Append (".this");
7692 sb.Append (parameters.GetSignatureForError ().Replace ('(', '[').Replace (')', ']'));
7693 return sb.ToString ();
7696 public override bool MarkForDuplicationCheck ()
7698 caching_flags |= Flags.TestMethodDuplication;
7702 protected override PropertyInfo ResolveBaseProperty ()
7704 return Parent.PartialContainer.BaseCache.FindMemberToOverride (
7705 Parent.TypeBuilder, Name, parameters.Types, null, true) as PropertyInfo;
7708 protected override bool VerifyClsCompliance ()
7710 if (!base.VerifyClsCompliance ())
7713 parameters.VerifyClsCompliance ();
7718 public class Operator : MethodOrOperator, IAnonymousHost {
7720 const int AllowedModifiers =
7726 public enum OpType : byte {
7736 // Unary and Binary operators
7759 // Implicit and Explicit
7763 // Just because of enum
7767 public readonly OpType OperatorType;
7769 public Operator (DeclSpace parent, OpType type, Expression ret_type,
7770 int mod_flags, Parameters parameters,
7771 ToplevelBlock block, Attributes attrs, Location loc)
7772 : base (parent, null, ret_type, mod_flags, AllowedModifiers, false,
7773 new MemberName ("op_" + type.ToString(), loc), attrs, parameters)
7775 OperatorType = type;
7779 public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
7781 if (a.Type == TypeManager.conditional_attribute_type) {
7782 Error_ConditionalAttributeIsNotValid ();
7786 base.ApplyAttributeBuilder (a, cb);
7789 protected override bool CheckForDuplications ()
7791 ArrayList ar = Parent.PartialContainer.Operators;
7793 int arLen = ar.Count;
7795 for (int i = 0; i < arLen; i++) {
7796 Operator o = (Operator) ar [i];
7797 if (IsDuplicateImplementation (o))
7802 ar = Parent.PartialContainer.Methods;
7804 int arLen = ar.Count;
7806 for (int i = 0; i < arLen; i++) {
7807 Method m = (Method) ar [i];
7808 if (IsDuplicateImplementation (m))
7816 public override bool Define ()
7818 const int RequiredModifiers = Modifiers.PUBLIC | Modifiers.STATIC;
7819 if ((ModFlags & RequiredModifiers) != RequiredModifiers){
7820 Report.Error (558, Location, "User-defined operator `{0}' must be declared static and public", GetSignatureForError ());
7824 // imlicit and explicit operator of same types are not allowed
7825 if (OperatorType == OpType.Explicit || OperatorType == OpType.Implicit)
7826 MarkForDuplicationCheck ();
7828 if (!base.Define ())
7831 if (MemberType == TypeManager.void_type) {
7832 Report.Error (590, Location, "User-defined operators cannot return void");
7836 Type declaring_type = MethodData.DeclaringType;
7837 Type return_type = MemberType;
7838 Type first_arg_type = ParameterTypes [0];
7840 // Rules for conversion operators
7842 if (OperatorType == OpType.Implicit || OperatorType == OpType.Explicit) {
7843 if (first_arg_type == return_type && first_arg_type == declaring_type){
7844 Report.Error (555, Location,
7845 "User-defined operator cannot take an object of the enclosing type and convert to an object of the enclosing type");
7849 if ((first_arg_type != declaring_type) && (return_type != declaring_type) &&
7850 !TypeManager.IsNullableTypeOf (first_arg_type, declaring_type) &&
7851 !TypeManager.IsNullableTypeOf (return_type, declaring_type)) {
7854 "User-defined conversion must convert to or from the " +
7859 if (first_arg_type.IsInterface || return_type.IsInterface){
7860 Report.Error (552, Location, "User-defined conversion `{0}' cannot convert to or from an interface type",
7861 GetSignatureForError ());
7865 if (first_arg_type.IsSubclassOf (return_type) || return_type.IsSubclassOf (first_arg_type)) {
7866 if (declaring_type.IsSubclassOf (return_type) || declaring_type.IsSubclassOf (first_arg_type)) {
7867 Report.Error (553, Location, "User-defined conversion `{0}' cannot convert to or from base class",
7868 GetSignatureForError ());
7871 Report.Error (554, Location, "User-defined conversion `{0}' cannot convert to or from derived class",
7872 GetSignatureForError ());
7875 } else if (OperatorType == OpType.LeftShift || OperatorType == OpType.RightShift) {
7876 if (first_arg_type != declaring_type || ParameterTypes [1] != TypeManager.int32_type) {
7877 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");
7880 } else if (Parameters.Count == 1) {
7881 // Checks for Unary operators
7883 if (OperatorType == OpType.Increment || OperatorType == OpType.Decrement) {
7884 if (return_type != declaring_type && !TypeManager.IsSubclassOf (return_type, declaring_type)) {
7885 Report.Error (448, Location,
7886 "The return type for ++ or -- operator must be the containing type or derived from the containing type");
7889 if (first_arg_type != declaring_type) {
7891 559, Location, "The parameter type for ++ or -- operator must be the containing type");
7896 if (first_arg_type != declaring_type){
7899 "The parameter of a unary operator must be the " +
7904 if (OperatorType == OpType.True || OperatorType == OpType.False) {
7905 if (return_type != TypeManager.bool_type){
7908 "The return type of operator True or False " +
7915 // Checks for Binary operators
7917 if (first_arg_type != declaring_type &&
7918 ParameterTypes [1] != declaring_type){
7921 "One of the parameters of a binary operator must " +
7922 "be the containing type");
7930 protected override bool DoDefine ()
7932 if (!base.DoDefine ())
7935 flags |= MethodAttributes.SpecialName | MethodAttributes.HideBySig;
7939 public override void Emit ()
7943 Parameters.ApplyAttributes (MethodBuilder);
7946 // abstract or extern methods have no bodies
7948 if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
7952 if ((flags & MethodAttributes.PinvokeImpl) == 0)
7953 ec = CreateEmitContext (Parent, MethodBuilder.GetILGenerator ());
7955 ec = CreateEmitContext (Parent, null);
7957 SourceMethod source = SourceMethod.Create (Parent, MethodBuilder, Block);
7958 ec.EmitTopBlock (this, Block);
7961 source.CloseMethod ();
7966 // Operator cannot be override
7967 protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
7972 public static string GetName (OpType ot)
7975 case OpType.LogicalNot:
7977 case OpType.OnesComplement:
7979 case OpType.Increment:
7981 case OpType.Decrement:
7987 case OpType.Addition:
7989 case OpType.Subtraction:
7991 case OpType.UnaryPlus:
7993 case OpType.UnaryNegation:
7995 case OpType.Multiply:
7997 case OpType.Division:
7999 case OpType.Modulus:
8001 case OpType.BitwiseAnd:
8003 case OpType.BitwiseOr:
8005 case OpType.ExclusiveOr:
8007 case OpType.LeftShift:
8009 case OpType.RightShift:
8011 case OpType.Equality:
8013 case OpType.Inequality:
8015 case OpType.GreaterThan:
8017 case OpType.LessThan:
8019 case OpType.GreaterThanOrEqual:
8021 case OpType.LessThanOrEqual:
8023 case OpType.Implicit:
8025 case OpType.Explicit:
8031 public static OpType GetOperatorType (string name)
8033 if (name.StartsWith ("op_")){
8034 for (int i = 0; i < Unary.oper_names.Length; ++i) {
8035 if (Unary.oper_names [i] == name)
8039 for (int i = 0; i < Binary.oper_names.Length; ++i) {
8040 if (Binary.oper_names [i] == name)
8047 public override string GetSignatureForError ()
8049 StringBuilder sb = new StringBuilder ();
8050 if (OperatorType == OpType.Implicit || OperatorType == OpType.Explicit) {
8051 sb.AppendFormat ("{0}.{1} operator {2}", Parent.GetSignatureForError (), GetName (OperatorType), Type.Type == null ? Type.ToString () : TypeManager.CSharpName (Type.Type));
8054 sb.AppendFormat ("{0}.operator {1}", Parent.GetSignatureForError (), GetName (OperatorType));
8057 sb.Append (Parameters.GetSignatureForError ());
8058 return sb.ToString ();
8063 // This is used to compare method signatures
8065 struct MethodSignature {
8067 public Type RetType;
8068 public Type [] Parameters;
8071 /// This delegate is used to extract methods which have the
8072 /// same signature as the argument
8074 public static MemberFilter method_signature_filter = new MemberFilter (MemberSignatureCompare);
8076 public MethodSignature (string name, Type ret_type, Type [] parameters)
8081 if (parameters == null)
8082 Parameters = Type.EmptyTypes;
8084 Parameters = parameters;
8087 public override string ToString ()
8090 if (Parameters.Length != 0){
8091 System.Text.StringBuilder sb = new System.Text.StringBuilder ();
8092 for (int i = 0; i < Parameters.Length; i++){
8093 sb.Append (Parameters [i]);
8094 if (i+1 < Parameters.Length)
8097 pars = sb.ToString ();
8100 return String.Format ("{0} {1} ({2})", RetType, Name, pars);
8103 public override int GetHashCode ()
8105 return Name.GetHashCode ();
8108 public override bool Equals (Object o)
8110 MethodSignature other = (MethodSignature) o;
8112 if (other.Name != Name)
8115 if (other.RetType != RetType)
8118 if (Parameters == null){
8119 if (other.Parameters == null)
8124 if (other.Parameters == null)
8127 int c = Parameters.Length;
8128 if (other.Parameters.Length != c)
8131 for (int i = 0; i < c; i++)
8132 if (other.Parameters [i] != Parameters [i])
8138 static bool MemberSignatureCompare (MemberInfo m, object filter_criteria)
8140 MethodSignature sig = (MethodSignature) filter_criteria;
8142 if (m.Name != sig.Name)
8146 MethodInfo mi = m as MethodInfo;
8147 PropertyInfo pi = m as PropertyInfo;
8150 ReturnType = mi.ReturnType;
8151 else if (pi != null)
8152 ReturnType = pi.PropertyType;
8157 // we use sig.RetType == null to mean `do not check the
8158 // method return value.
8160 if (sig.RetType != null)
8161 if (ReturnType != sig.RetType)
8166 args = TypeManager.GetParameterData (mi).Types;
8168 args = TypeManager.GetArgumentTypes (pi);
8169 Type [] sigp = sig.Parameters;
8171 if (args.Length != sigp.Length)
8174 for (int i = args.Length; i > 0; ){
8176 if (args [i] != sigp [i])