3 // class.cs: Class and Struct handlers
5 // Authors: Miguel de Icaza (miguel@gnu.org)
6 // Martin Baulig (martin@gnome.org)
8 // Licensed under the terms of the GNU GPL
10 // (C) 2001, 2002 Ximian, Inc (http://www.ximian.com)
13 // 2002-10-11 Miguel de Icaza <miguel@ximian.com>
15 // * class.cs: Following the comment from 2002-09-26 to AddMethod, I
16 // have fixed a remaining problem: not every AddXXXX was adding a
17 // fully qualified name.
19 // Now everyone registers a fully qualified name in the DeclSpace as
20 // being defined instead of the partial name.
22 // Downsides: we are slower than we need to be due to the excess
23 // copies and the names being registered this way.
25 // The reason for this is that we currently depend (on the corlib
26 // bootstrap for instance) that types are fully qualified, because
27 // we dump all the types in the namespace, and we should really have
28 // types inserted into the proper namespace, so we can only store the
29 // basenames in the defined_names array.
34 using System.Collections;
35 using System.Reflection;
36 using System.Reflection.Emit;
37 using System.Runtime.CompilerServices;
38 using System.Diagnostics.SymbolStore;
40 namespace Mono.CSharp {
43 /// This is the base class for structs and classes.
45 public class TypeContainer : DeclSpace, IMemberContainer {
46 // Holds a list of classes and structures
49 // Holds the list of properties
52 // Holds the list of enumerations
55 // Holds the list of delegates
58 // Holds the list of constructors
59 ArrayList instance_constructors;
61 // Holds the list of fields
64 // Holds a list of fields that have initializers
65 ArrayList initialized_fields;
67 // Holds a list of static fields that have initializers
68 ArrayList initialized_static_fields;
70 // Holds the list of constants
76 // Holds order in which interfaces must be closed
77 ArrayList interface_order;
88 // Holds the operators
91 // The emit context for toplevel objects.
95 // Pointers to the default constructor and the default static constructor
97 Constructor default_constructor;
98 Constructor default_static_constructor;
101 // Whether we have seen a static constructor for this class or not
103 bool have_static_constructor = false;
106 // Whether we have at least one non-static field
108 bool have_nonstatic_fields = false;
111 // This one is computed after we can distinguish interfaces
112 // from classes from the arraylist `type_bases'
114 string base_class_name;
116 ArrayList type_bases;
118 // Attributes for this type
119 protected Attributes attributes;
121 // Information in the case we are an attribute type
123 public AttributeTargets Targets = AttributeTargets.All;
124 public bool AllowMultiple = false;
125 public bool Inherited;
127 // The interfaces we implement.
130 // The parent member container and our member cache
131 IMemberContainer parent_container;
132 MemberCache member_cache;
135 // The indexer name for this class
137 public string IndexerName;
139 public TypeContainer (TypeContainer parent, string name, Location l)
140 : base (parent, name, l)
143 types = new ArrayList ();
150 base_class_name = null;
152 //Console.WriteLine ("New class " + name + " inside " + n);
155 public AdditionResult AddConstant (Const constant)
158 string basename = constant.Name;
160 if ((res = IsValid (basename)) != AdditionResult.Success)
163 if (constants == null)
164 constants = new ArrayList ();
166 constants.Add (constant);
167 DefineName (Name + "." + basename, constant);
169 return AdditionResult.Success;
172 public AdditionResult AddEnum (Mono.CSharp.Enum e)
176 if ((res = IsValid (e.Basename)) != AdditionResult.Success)
180 enums = new ArrayList ();
183 DefineName (e.Name, e);
185 return AdditionResult.Success;
188 public AdditionResult AddClass (Class c)
192 if ((res = IsValid (c.Basename)) != AdditionResult.Success)
197 DefineName (c.Name, c);
200 // FIXME: Do we really need to explicitly add an empty default static constructor?
201 if (c.default_static_constructor == null)
203 bool isModule = c is Mono.MonoBASIC.Module;
204 Constructor dc = new Constructor ("New", Parameters.EmptyReadOnlyParameters, null, c.Location);
205 dc.ModFlags = isModule ? Modifiers.PUBLIC | Modifiers.STATIC : Modifiers.PUBLIC;
206 c.AddConstructor (dc);
208 // --------------------------------------------------------------
210 return AdditionResult.Success;
213 public AdditionResult AddStruct (Struct s)
217 if ((res = IsValid (s.Basename)) != AdditionResult.Success)
220 DefineName (s.Name, s);
223 return AdditionResult.Success;
226 public AdditionResult AddDelegate (Delegate d)
230 if ((res = IsValid (d.Basename)) != AdditionResult.Success)
233 if (delegates == null)
234 delegates = new ArrayList ();
236 DefineName (d.Name, d);
239 return AdditionResult.Success;
242 public AdditionResult AddMethod (Method method)
244 string basename = method.Name;
245 string fullname = Name + "." + basename;
247 Object value = defined_names [fullname];
249 if (value != null && (!(value is Method)))
250 return AdditionResult.NameExists;
252 if (basename == Basename)
253 return AdditionResult.EnclosingClash;
256 methods = new ArrayList ();
258 if (method.Name.IndexOf (".") != -1)
259 methods.Insert (0, method);
261 methods.Add (method);
264 DefineName (fullname, method);
266 return AdditionResult.Success;
269 public AdditionResult AddConstructor (Constructor c)
272 return AdditionResult.NotAConstructor;
274 bool is_static = (c.ModFlags & Modifiers.STATIC) != 0;
277 have_static_constructor = true;
278 if (default_static_constructor != null){
279 Console.WriteLine ("I have a static constructor already");
280 Console.WriteLine (" " + default_static_constructor);
281 return AdditionResult.MethodExists;
284 default_static_constructor = c;
287 if (default_constructor != null)
288 return AdditionResult.MethodExists;
289 default_constructor = c;
292 if (instance_constructors == null)
293 instance_constructors = new ArrayList ();
295 instance_constructors.Add (c);
298 return AdditionResult.Success;
301 public AdditionResult AddInterface (Interface iface)
305 if ((res = IsValid (iface.Basename)) != AdditionResult.Success)
308 if (interfaces == null)
309 interfaces = new ArrayList ();
310 interfaces.Add (iface);
311 DefineName (iface.Name, iface);
313 return AdditionResult.Success;
316 public AdditionResult AddField (Field field)
319 string basename = field.Name;
321 if ((res = IsValid (basename)) != AdditionResult.Success)
325 fields = new ArrayList ();
329 if (field.HasInitializer){
330 if ((field.ModFlags & Modifiers.STATIC) != 0) {
331 if (initialized_static_fields == null)
332 initialized_static_fields = new ArrayList ();
334 initialized_static_fields.Add (field);
337 // We have not seen a static constructor,
338 // but we will provide static initialization of fields
340 have_static_constructor = true;
342 if (initialized_fields == null)
343 initialized_fields = new ArrayList ();
345 initialized_fields.Add (field);
349 if ((field.ModFlags & Modifiers.STATIC) == 0)
350 have_nonstatic_fields = true;
352 DefineName (Name + "." + basename, field);
353 return AdditionResult.Success;
356 public AdditionResult AddProperty (Property prop)
359 string basename = prop.Name;
361 if ((res = IsValid (basename)) != AdditionResult.Success)
364 if (properties == null)
365 properties = new ArrayList ();
367 if (prop.Name.IndexOf (".") != -1)
368 properties.Insert (0, prop);
370 properties.Add (prop);
371 DefineName (Name + "." + basename, prop);
373 return AdditionResult.Success;
376 public AdditionResult AddEvent (Event e)
379 string basename = e.Name;
381 if ((res = IsValid (basename)) != AdditionResult.Success)
385 events = new ArrayList ();
388 DefineName (Name + "." + basename, e);
390 return AdditionResult.Success;
393 public AdditionResult AddIndexer (Indexer i)
395 if (indexers == null)
396 indexers = new ArrayList ();
398 if (i.InterfaceType != null)
399 indexers.Insert (0, i);
403 return AdditionResult.Success;
406 public AdditionResult AddOperator (Operator op)
408 if (operators == null)
409 operators = new ArrayList ();
413 return AdditionResult.Success;
416 public void RegisterOrder (Interface iface)
418 if (interface_order == null)
419 interface_order = new ArrayList ();
421 interface_order.Add (iface);
424 public ArrayList Types {
430 public ArrayList Methods {
436 public ArrayList Constants {
442 public ArrayList Interfaces {
450 return base_class_name;
454 public ArrayList Bases {
464 public ArrayList Fields {
474 public ArrayList InstanceConstructors {
476 return instance_constructors;
480 public ArrayList Properties {
486 public ArrayList Events {
492 public ArrayList Enums {
498 public ArrayList Indexers {
504 public ArrayList Operators {
510 public ArrayList Delegates {
516 public Attributes OptAttributes {
522 public bool HaveStaticConstructor {
524 return have_static_constructor;
528 public virtual TypeAttributes TypeAttr {
530 return Modifiers.TypeAttr (ModFlags, this);
535 // Emits the instance field initializers
537 public bool EmitFieldInitializers (EmitContext ec)
540 ILGenerator ig = ec.ig;
541 Expression instance_expr;
544 fields = initialized_static_fields;
545 instance_expr = null;
547 fields = initialized_fields;
548 instance_expr = new This (Location.Null).Resolve (ec);
554 foreach (Field f in fields){
555 Expression e = f.GetInitializerExpression (ec);
559 Location l = f.Location;
560 FieldExpr fe = new FieldExpr (f.FieldBuilder, l);
561 fe.InstanceExpression = instance_expr;
562 Expression a = new Assign (fe, e, l);
568 if (a is ExpressionStatement)
569 ((ExpressionStatement) a).EmitStatement (ec);
571 throw new Exception ("Assign.Resolve returned a non ExpressionStatement");
579 // Defines the default constructors
581 void DefineDefaultConstructor (bool is_static)
586 c = new Constructor (Basename, Parameters.EmptyReadOnlyParameters,
587 new ConstructorBaseInitializer (
588 null, Parameters.EmptyReadOnlyParameters,
593 mods = Modifiers.STATIC;
599 c.Block = new Block (null);
603 public void ReportStructInitializedInstanceError ()
605 string n = TypeBuilder.FullName;
607 foreach (Field f in initialized_fields){
610 "`" + n + "." + f.Name + "': can not have " +
611 "instance field initializers in structs");
616 /// The pending methods that need to be implemented (interfaces or abstract methods)
618 public PendingImplementation Pending;
621 /// This function computes the Base class and also the
622 /// list of interfaces that the class or struct @c implements.
624 /// The return value is an array (might be null) of
625 /// interfaces implemented (as Types).
627 /// The @parent argument is set to the parent object or null
628 /// if this is `System.Object'.
630 Type [] GetClassBases (bool is_class, out Type parent, out bool error)
632 ArrayList bases = Bases;
641 parent = TypeManager.value_type;
645 if (RootContext.StdLib)
646 parent = TypeManager.object_type;
647 else if (Name != "System.Object")
648 parent = TypeManager.object_type;
651 // If we are compiling our runtime,
652 // and we are defining ValueType, then our
653 // parent is `System.Object'.
655 if (!RootContext.StdLib && Name == "System.ValueType")
656 parent = TypeManager.object_type;
663 // Bases should be null if there are no bases at all
668 Expression name = (Expression) bases [0];
669 name = ResolveTypeExpr (name, false, Location);
676 Type first = name.Type;
682 parent = TypeManager.object_type;
686 if (!AsAccessible (parent, ModFlags))
687 Report.Error (60, Location,
688 "Inconsistent accessibility: base class `" +
689 TypeManager.CSharpName (parent) + "' is less " +
690 "accessible than class `" +
697 Type [] ifaces = new Type [count-start];
699 for (i = start, j = 0; i < count; i++, j++){
700 Expression name = (Expression) bases [i];
701 Expression resolved = ResolveTypeExpr (name, false, Location);
702 bases [i] = resolved;
703 Type t = resolved.Type;
710 if (is_class == false && !t.IsInterface){
711 Report.Error (527, "In Struct `" + Name + "', type `"+
712 name +"' is not an interface");
721 detail = " (a class can not inherit from a struct/enum)";
723 Report.Error (509, "class `"+ Name +
724 "': Cannot inherit from sealed class `"+
725 bases [i]+"'"+detail);
732 Report.Error (527, "In Class `" + Name + "', type `"+
733 name+"' is not an interface");
739 for (int x = 0; x < j; x++) {
740 if (t == ifaces [x]) {
741 Report.Error (528, "`" + name + "' is already listed in interface list");
750 return TypeManager.ExpandInterfaces (ifaces);
754 // Defines the type in the appropriate ModuleBuilder or TypeBuilder.
756 public override TypeBuilder DefineType ()
762 if (TypeBuilder != null)
775 ec = new EmitContext (this, Mono.CSharp.Location.Null, null, null, ModFlags);
777 ifaces = GetClassBases (is_class, out parent, out error);
782 if (is_class && parent != null){
783 if (parent == TypeManager.enum_type ||
784 (parent == TypeManager.value_type && RootContext.StdLib) ||
785 parent == TypeManager.delegate_type ||
786 parent == TypeManager.array_type){
788 644, Location, "`" + Name + "' cannot inherit from " +
789 "special class `" + TypeManager.CSharpName (parent) + "'");
794 if (!is_class && TypeManager.value_type == null)
795 throw new Exception ();
797 TypeAttributes type_attributes = TypeAttr;
799 // if (parent_builder is ModuleBuilder) {
801 ModuleBuilder builder = CodeGen.ModuleBuilder;
802 TypeBuilder = builder.DefineType (
803 Name, type_attributes, parent, ifaces);
806 TypeBuilder builder = Parent.TypeBuilder;
807 TypeBuilder = builder.DefineNestedType (
808 Basename, type_attributes, parent, ifaces);
812 // Structs with no fields need to have at least one byte.
813 // The right thing would be to set the PackingSize in a DefineType
814 // but there are no functions that allow interfaces *and* the size to
818 if (!is_class && !have_nonstatic_fields){
819 TypeBuilder.DefineField ("$PRIVATE$", TypeManager.byte_type,
820 FieldAttributes.Private);
823 // add interfaces that were not added at type creation (weird API issue)
824 if (!is_class && !have_nonstatic_fields && (ifaces != null)) {
825 foreach (Type i in ifaces)
826 TypeBuilder.AddInterfaceImplementation (i);
830 // Finish the setup for the EmitContext
832 ec.ContainerType = TypeBuilder;
834 TypeManager.AddUserType (Name, TypeBuilder, this, ifaces);
836 if ((parent != null) &&
837 (parent == TypeManager.attribute_type ||
838 parent.IsSubclassOf (TypeManager.attribute_type))) {
839 RootContext.RegisterAttribute (this);
840 TypeManager.RegisterAttrType (TypeBuilder, this);
842 RootContext.RegisterOrder (this);
844 if (Interfaces != null) {
845 foreach (Interface iface in Interfaces)
850 foreach (TypeContainer tc in Types)
854 if (Delegates != null) {
855 foreach (Delegate d in Delegates)
860 foreach (Enum en in Enums)
870 /// Defines the MemberCore objects that are in the `list' Arraylist
872 /// The `defined_names' array contains a list of members defined in
875 static ArrayList remove_list = new ArrayList ();
876 void DefineMembers (ArrayList list, MemberInfo [] defined_names)
880 remove_list.Clear ();
882 foreach (MemberCore mc in list){
883 if (!mc.Define (this)){
884 remove_list.Add (mc);
888 if (defined_names == null)
891 idx = Array.BinarySearch (defined_names, mc.Name, mif_compare);
893 if (RootContext.WarningLevel >= 4){
894 if ((mc.ModFlags & Modifiers.NEW) != 0)
895 Warning_KewywordNewNotRequired (mc.Location, mc);
900 MemberInfo match = defined_names [idx];
902 if (match is PropertyInfo && ((mc.ModFlags & Modifiers.OVERRIDE) != 0))
906 // If we are both methods, let the method resolution emit warnings
908 if (match is MethodBase && mc is MethodCore)
911 if ((mc.ModFlags & Modifiers.NEW) == 0)
912 Warning_KeywordNewRequired (mc.Location, defined_names [idx]);
915 foreach (object o in remove_list)
918 remove_list.Clear ();
922 // Defines the indexers, and also verifies that the IndexerNameAttribute in the
923 // class is consisten. Either it is `Item' or it is the name defined by all the
924 // indexers with the `IndexerName' attribute.
926 // Turns out that the IndexerNameAttribute is applied to each indexer,
927 // but it is never emitted, instead a DefaultName attribute is attached
930 void DefineIndexers ()
932 string class_indexer_name = null;
934 foreach (Indexer i in Indexers){
939 name = i.IndexerName;
941 if (i.InterfaceType != null)
944 if (class_indexer_name == null){
945 class_indexer_name = name;
949 if (name == class_indexer_name)
953 668, "Two indexers have different names, " +
954 " you should use the same name for all your indexers");
956 if (class_indexer_name == null)
957 class_indexer_name = "Item";
958 IndexerName = class_indexer_name;
961 static void Error_KeywordNotAllowed (Location loc)
963 Report.Error (1530, loc, "Keyword new not allowed for namespace elements");
967 /// Populates our TypeBuilder with fields and methods
969 public override bool DefineMembers (TypeContainer parent)
971 MemberInfo [] defined_names = null;
973 if (interface_order != null){
974 foreach (Interface iface in interface_order)
975 if ((iface.ModFlags & Modifiers.NEW) == 0)
976 iface.DefineMembers (this);
978 Error_KeywordNotAllowed (iface.Location);
981 if (RootContext.WarningLevel > 1){
985 // This code throws an exception in the comparer
986 // I guess the string is not an object?
988 ptype = TypeBuilder.BaseType;
990 defined_names = (MemberInfo []) FindMembers (
991 ptype, MemberTypes.All & ~MemberTypes.Constructor,
992 BindingFlags.Public | BindingFlags.Instance |
993 BindingFlags.Static, null, null);
995 Array.Sort (defined_names, mif_compare);
999 if (constants != null)
1000 DefineMembers (constants, defined_names);
1003 DefineMembers (fields, defined_names);
1006 if (instance_constructors == null){
1007 if (default_constructor == null)
1008 DefineDefaultConstructor (false);
1011 if (initialized_static_fields != null &&
1012 default_static_constructor == null)
1013 DefineDefaultConstructor (true);
1016 if (this is Struct){
1018 // Structs can not have initialized instance
1021 if (initialized_static_fields != null &&
1022 default_static_constructor == null)
1023 DefineDefaultConstructor (true);
1025 if (initialized_fields != null)
1026 ReportStructInitializedInstanceError ();
1029 Pending = PendingImplementation.GetPendingImplementations (this);
1032 // Constructors are not in the defined_names array
1034 if (instance_constructors != null)
1035 DefineMembers (instance_constructors, null);
1037 if (default_static_constructor != null)
1038 default_static_constructor.Define (this);
1040 if (methods != null)
1041 DefineMembers (methods, defined_names);
1043 if (properties != null)
1044 DefineMembers (properties, defined_names);
1047 DefineMembers (events, defined_names);
1049 if (indexers != null) {
1052 IndexerName = "Item";
1054 if (operators != null){
1055 DefineMembers (operators, null);
1057 CheckPairedOperators ();
1061 DefineMembers (enums, defined_names);
1063 if (delegates != null)
1064 DefineMembers (delegates, defined_names);
1067 if (TypeBuilder.BaseType != null)
1068 parent_container = TypeManager.LookupMemberContainer (TypeBuilder.BaseType);
1070 member_cache = new MemberCache (this);
1076 public override bool Define (TypeContainer parent)
1078 if (interface_order != null){
1079 foreach (Interface iface in interface_order)
1080 if ((iface.ModFlags & Modifiers.NEW) == 0)
1081 iface.Define (this);
1088 /// This function is based by a delegate to the FindMembers routine
1090 static bool AlwaysAccept (MemberInfo m, object filterCriteria)
1096 /// This filter is used by FindMembers, and we just keep
1097 /// a global for the filter to `AlwaysAccept'
1099 static MemberFilter accepting_filter;
1103 /// A member comparission method based on name only
1105 static IComparer mif_compare;
1107 static TypeContainer ()
1109 accepting_filter = new MemberFilter (AlwaysAccept);
1110 mif_compare = new MemberInfoCompare ();
1114 /// This method returns the members of this type just like Type.FindMembers would
1115 /// Only, we need to use this for types which are _being_ defined because MS'
1116 /// implementation can't take care of that.
1119 // FIXME: return an empty static array instead of null, that cleans up
1120 // some code and is consistent with some coding conventions I just found
1124 // Notice that in various cases we check if our field is non-null,
1125 // something that would normally mean that there was a bug elsewhere.
1127 // The problem happens while we are defining p-invoke methods, as those
1128 // will trigger a FindMembers, but this happens before things are defined
1130 // Since the whole process is a no-op, it is fine to check for null here.
1132 public override MemberList FindMembers (MemberTypes mt, BindingFlags bf,
1133 MemberFilter filter, object criteria)
1135 ArrayList members = new ArrayList ();
1138 if ((bf & BindingFlags.Public) != 0)
1139 modflags |= Modifiers.PUBLIC | Modifiers.PROTECTED |
1141 if ((bf & BindingFlags.NonPublic) != 0)
1142 modflags |= Modifiers.PRIVATE;
1144 int static_mask = 0, static_flags = 0;
1145 switch (bf & (BindingFlags.Static | BindingFlags.Instance)) {
1146 case BindingFlags.Static:
1147 static_mask = static_flags = Modifiers.STATIC;
1150 case BindingFlags.Instance:
1151 static_mask = Modifiers.STATIC;
1156 static_mask = static_flags = 0;
1160 Timer.StartTimer (TimerType.TcFindMembers);
1163 filter = accepting_filter;
1165 if ((mt & MemberTypes.Field) != 0) {
1166 if (fields != null) {
1167 foreach (Field f in fields) {
1168 if ((f.ModFlags & modflags) == 0)
1170 if ((f.ModFlags & static_mask) != static_flags)
1173 FieldBuilder fb = f.FieldBuilder;
1174 if (fb != null && filter (fb, criteria) == true)
1179 if (constants != null) {
1180 foreach (Const con in constants) {
1181 if ((con.ModFlags & modflags) == 0)
1183 if ((con.ModFlags & static_mask) != static_flags)
1186 FieldBuilder fb = con.FieldBuilder;
1187 if (fb != null && filter (fb, criteria) == true)
1193 if ((mt & MemberTypes.Method) != 0) {
1194 if (methods != null) {
1195 foreach (Method m in methods) {
1196 if ((m.ModFlags & modflags) == 0)
1198 if ((m.ModFlags & static_mask) != static_flags)
1201 MethodBuilder mb = m.MethodBuilder;
1203 if (mb != null && filter (mb, criteria) == true)
1208 if (operators != null){
1209 foreach (Operator o in operators) {
1210 if ((o.ModFlags & modflags) == 0)
1212 if ((o.ModFlags & static_mask) != static_flags)
1215 MethodBuilder ob = o.OperatorMethodBuilder;
1216 if (ob != null && filter (ob, criteria) == true)
1221 if (properties != null){
1222 foreach (Property p in properties){
1223 if ((p.ModFlags & modflags) == 0)
1225 if ((p.ModFlags & static_mask) != static_flags)
1231 if (b != null && filter (b, criteria) == true)
1235 if (b != null && filter (b, criteria) == true)
1240 if (indexers != null){
1241 foreach (Indexer ix in indexers){
1242 if ((ix.ModFlags & modflags) == 0)
1244 if ((ix.ModFlags & static_mask) != static_flags)
1250 if (b != null && filter (b, criteria) == true)
1254 if (b != null && filter (b, criteria) == true)
1260 if ((mt & MemberTypes.Event) != 0) {
1262 foreach (Event e in events) {
1263 if ((e.ModFlags & modflags) == 0)
1265 if ((e.ModFlags & static_mask) != static_flags)
1268 MemberInfo eb = e.EventBuilder;
1269 if (eb != null && filter (eb, criteria) == true)
1270 members.Add (e.EventBuilder);
1274 if ((mt & MemberTypes.Property) != 0){
1275 if (properties != null)
1276 foreach (Property p in properties) {
1277 if ((p.ModFlags & modflags) == 0)
1279 if ((p.ModFlags & static_mask) != static_flags)
1282 MemberInfo pb = p.PropertyBuilder;
1283 if (pb != null && filter (pb, criteria) == true) {
1284 members.Add (p.PropertyBuilder);
1288 if (indexers != null)
1289 foreach (Indexer ix in indexers) {
1290 if ((ix.ModFlags & modflags) == 0)
1292 if ((ix.ModFlags & static_mask) != static_flags)
1295 MemberInfo ib = ix.PropertyBuilder;
1296 if (ib != null && filter (ib, criteria) == true) {
1297 members.Add (ix.PropertyBuilder);
1302 if ((mt & MemberTypes.NestedType) != 0) {
1304 foreach (TypeContainer t in types) {
1305 if ((t.ModFlags & modflags) == 0)
1308 TypeBuilder tb = t.TypeBuilder;
1309 if (tb != null && (filter (tb, criteria) == true))
1315 foreach (Enum en in enums){
1316 if ((en.ModFlags & modflags) == 0)
1319 TypeBuilder tb = en.TypeBuilder;
1320 if (tb != null && (filter (tb, criteria) == true))
1325 if (delegates != null){
1326 foreach (Delegate d in delegates){
1327 if ((d.ModFlags & modflags) == 0)
1330 TypeBuilder tb = d.TypeBuilder;
1331 if (tb != null && (filter (tb, criteria) == true))
1336 if (interfaces != null){
1337 foreach (Interface iface in interfaces){
1338 if ((iface.ModFlags & modflags) == 0)
1341 TypeBuilder tb = iface.TypeBuilder;
1342 if (tb != null && (filter (tb, criteria) == true))
1348 if ((mt & MemberTypes.Constructor) != 0){
1349 if (((bf & BindingFlags.Instance) != 0) && (instance_constructors != null)){
1350 foreach (Constructor c in instance_constructors){
1351 ConstructorBuilder cb = c.ConstructorBuilder;
1353 if (filter (cb, criteria) == true)
1358 if (((bf & BindingFlags.Static) != 0) && (default_static_constructor != null)){
1359 ConstructorBuilder cb =
1360 default_static_constructor.ConstructorBuilder;
1363 if (filter (cb, criteria) == true)
1369 // Lookup members in parent if requested.
1371 if (((bf & BindingFlags.DeclaredOnly) == 0) && (TypeBuilder.BaseType != null)) {
1372 MemberList list = FindMembers (TypeBuilder.BaseType, mt, bf, filter, criteria);
1373 members.AddRange (list);
1376 Timer.StopTimer (TimerType.TcFindMembers);
1378 return new MemberList (members);
1381 public override MemberCache MemberCache {
1383 return member_cache;
1387 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1388 MemberFilter filter, object criteria)
1390 TypeContainer tc = TypeManager.LookupTypeContainer (t);
1393 return tc.FindMembers (mt, bf, filter, criteria);
1395 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1399 // FindMethods will look for methods not only in the type `t', but in
1400 // any interfaces implemented by the type.
1402 public static MethodInfo [] FindMethods (Type t, BindingFlags bf,
1403 MemberFilter filter, object criteria)
1409 /// Emits the values for the constants
1411 public void EmitConstants ()
1413 if (constants != null)
1414 foreach (Const con in constants)
1415 con.EmitConstant (this);
1420 /// Emits the code, this step is performed after all
1421 /// the types, enumerations, constructors
1425 if (instance_constructors != null)
1426 foreach (Constructor c in instance_constructors)
1429 if (default_static_constructor != null)
1430 default_static_constructor.Emit (this);
1432 if (methods != null)
1433 foreach (Method m in methods)
1436 if (operators != null)
1437 foreach (Operator o in operators)
1440 if (properties != null)
1441 foreach (Property p in properties)
1444 if (indexers != null){
1445 foreach (Indexer ix in indexers)
1448 CustomAttributeBuilder cb = Interface.EmitDefaultMemberAttr (
1449 this, IndexerName, ModFlags, Location);
1450 TypeBuilder.SetCustomAttribute (cb);
1454 foreach (Field f in fields)
1457 if (events != null){
1458 foreach (Event e in Events)
1462 if (Pending != null)
1463 if (Pending.VerifyPendingMethods ())
1466 Attribute.ApplyAttributes (ec, TypeBuilder, this, OptAttributes, Location);
1469 // Check for internal or private fields that were never assigned
1471 if (fields != null && RootContext.WarningLevel >= 3) {
1472 foreach (Field f in fields) {
1473 if ((f.ModFlags & Modifiers.PUBLIC) != 0)
1478 169, f.Location, "Private field " +
1479 MakeName (f.Name) + " is never used");
1484 // Only report 649 on level 4
1486 if (RootContext.WarningLevel < 4)
1489 if ((f.status & Field.Status.ASSIGNED) != 0)
1494 "Field " + MakeName (f.Name) + " is never assigned " +
1495 " to and will always have its default value");
1499 // if (types != null)
1500 // foreach (TypeContainer tc in types)
1504 public override void CloseType ()
1509 TypeBuilder.CreateType ();
1511 } catch (TypeLoadException){
1513 // This is fine, the code still created the type
1515 // Report.Warning (-20, "Exception while creating class: " + TypeBuilder.Name);
1516 // Console.WriteLine (e.Message);
1518 Console.WriteLine ("In type: " + Name);
1523 foreach (Enum en in Enums)
1526 if (interface_order != null){
1527 foreach (Interface iface in interface_order)
1532 foreach (TypeContainer tc in Types)
1536 foreach (TypeContainer tc in Types)
1537 if (!(tc is Struct))
1541 if (Delegates != null)
1542 foreach (Delegate d in Delegates)
1546 public string MakeName (string n)
1548 return "`" + Name + "." + n + "'";
1551 public void Warning_KeywordNewRequired (Location l, MemberInfo mi)
1554 108, l, "The keyword new is required on " +
1555 MakeName (mi.Name) + " because it hides `" +
1556 mi.ReflectedType.Name + "." + mi.Name + "'");
1559 public void Warning_KewywordNewNotRequired (Location l, MemberCore mc)
1562 109, l, "The member " + MakeName (mc.Name) + " does not hide an " +
1563 "inherited member, the keyword new is not required");
1566 public static int CheckMember (string name, MemberInfo mi, int ModFlags)
1572 // Performs the validation on a Method's modifiers (properties have
1573 // the same properties).
1575 public bool MethodModifiersValid (int flags, string n, Location loc)
1577 const int vao = (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE);
1578 const int va = (Modifiers.VIRTUAL | Modifiers.ABSTRACT);
1579 const int nv = (Modifiers.NEW | Modifiers.VIRTUAL);
1581 string name = MakeName (n);
1584 // At most one of static, virtual or override
1586 if ((flags & Modifiers.STATIC) != 0){
1587 if ((flags & vao) != 0){
1589 112, loc, "static method " + name + "can not be marked " +
1590 "as virtual, abstract or override");
1595 if (this is Struct){
1596 if ((flags & va) != 0){
1597 Modifiers.Error_InvalidModifier (loc, "virtual or abstract");
1602 if ((flags & Modifiers.OVERRIDE) != 0 && (flags & nv) != 0){
1605 " marked as override cannot be marked as new or virtual");
1610 // If the declaration includes the abstract modifier, then the
1611 // declaration does not include static, virtual or extern
1613 if ((flags & Modifiers.ABSTRACT) != 0){
1614 if ((flags & Modifiers.EXTERN) != 0){
1616 180, loc, name + " can not be both abstract and extern");
1620 if ((flags & Modifiers.VIRTUAL) != 0){
1622 503, loc, name + " can not be both abstract and virtual");
1626 if ((ModFlags & Modifiers.ABSTRACT) == 0){
1629 " is abstract but its container class is not");
1635 if ((flags & Modifiers.PRIVATE) != 0){
1636 if ((flags & vao) != 0){
1639 " virtual or abstract members can not be private");
1644 if ((flags & Modifiers.SEALED) != 0){
1645 if ((flags & Modifiers.OVERRIDE) == 0){
1648 " cannot be sealed because it is not an override");
1656 // Access level of a type.
1659 ProtectedInternal = 1,
1665 // Check whether `flags' denotes a more restricted access than `level'
1666 // and return the new level.
1667 static AccessLevel CheckAccessLevel (AccessLevel level, int flags)
1669 AccessLevel old_level = level;
1671 if ((flags & Modifiers.INTERNAL) != 0) {
1672 if ((flags & Modifiers.PROTECTED) != 0) {
1673 if ((int) level < (int) AccessLevel.ProtectedInternal)
1674 level = AccessLevel.ProtectedInternal;
1676 if ((int) level < (int) AccessLevel.Internal)
1677 level = AccessLevel.Internal;
1679 } else if ((flags & Modifiers.PROTECTED) != 0) {
1680 if ((int) level < (int) AccessLevel.Protected)
1681 level = AccessLevel.Protected;
1682 } else if ((flags & Modifiers.PRIVATE) != 0)
1683 level = AccessLevel.Private;
1688 // Return the access level for a new member which is defined in the current
1689 // TypeContainer with access modifiers `flags'.
1690 AccessLevel GetAccessLevel (int flags)
1692 if ((flags & Modifiers.PRIVATE) != 0)
1693 return AccessLevel.Private;
1696 if (!IsTopLevel && (Parent != null))
1697 level = Parent.GetAccessLevel (flags);
1699 level = AccessLevel.Public;
1701 return CheckAccessLevel (CheckAccessLevel (level, flags), ModFlags);
1704 // Return the access level for type `t', but don't give more access than `flags'.
1705 static AccessLevel GetAccessLevel (Type t, int flags)
1707 if (((flags & Modifiers.PRIVATE) != 0) || t.IsNestedPrivate)
1708 return AccessLevel.Private;
1711 if (TypeManager.IsBuiltinType (t))
1712 return AccessLevel.Public;
1713 else if ((t.DeclaringType != null) && (t != t.DeclaringType))
1714 level = GetAccessLevel (t.DeclaringType, flags);
1716 level = CheckAccessLevel (AccessLevel.Public, flags);
1719 if (t.IsNestedPublic)
1722 if (t.IsNestedAssembly || t.IsNotPublic) {
1723 if ((int) level < (int) AccessLevel.Internal)
1724 level = AccessLevel.Internal;
1727 if (t.IsNestedFamily) {
1728 if ((int) level < (int) AccessLevel.Protected)
1729 level = AccessLevel.Protected;
1732 if (t.IsNestedFamORAssem) {
1733 if ((int) level < (int) AccessLevel.ProtectedInternal)
1734 level = AccessLevel.ProtectedInternal;
1741 // Returns true if `parent' is as accessible as the flags `flags'
1742 // given for this member.
1744 public bool AsAccessible (Type parent, int flags)
1746 while (parent.IsArray || parent.IsPointer || parent.IsByRef)
1747 parent = parent.GetElementType ();
1749 AccessLevel level = GetAccessLevel (flags);
1750 AccessLevel level2 = GetAccessLevel (parent, flags);
1752 return (int) level >= (int) level2;
1755 Hashtable builder_and_args;
1757 public bool RegisterMethod (MethodBuilder mb, InternalParameters ip, Type [] args)
1759 if (builder_and_args == null)
1760 builder_and_args = new Hashtable ();
1765 /// Performs checks for an explicit interface implementation. First it
1766 /// checks whether the `interface_type' is a base inteface implementation.
1767 /// Then it checks whether `name' exists in the interface type.
1769 public bool VerifyImplements (Type interface_type, string full, string name, Location loc)
1773 if (ifaces != null){
1774 foreach (Type t in ifaces){
1775 if (t == interface_type){
1783 Report.Error (540, "`" + full + "': containing class does not implement interface `" + interface_type.FullName + "'");
1790 public static void Error_ExplicitInterfaceNotMemberInterface (Location loc, string name)
1792 Report.Error (539, loc, "Explicit implementation: `" + name + "' is not a member of the interface");
1799 string IMemberContainer.Name {
1805 Type IMemberContainer.Type {
1811 IMemberContainer IMemberContainer.Parent {
1813 return parent_container;
1817 MemberCache IMemberContainer.MemberCache {
1819 return member_cache;
1823 bool IMemberContainer.IsInterface {
1829 MemberList IMemberContainer.GetMembers (MemberTypes mt, BindingFlags bf)
1831 return FindMembers (mt, bf | BindingFlags.DeclaredOnly, null, null);
1835 // Operator pair checking
1838 class OperatorEntry {
1840 public Type ret_type;
1841 public Type type1, type2;
1843 public Operator.OpType ot;
1845 public OperatorEntry (int f, Operator o)
1849 ret_type = o.OperatorMethod.GetReturnType ();
1850 Type [] pt = o.OperatorMethod.ParameterTypes;
1854 ot = o.OperatorType;
1857 public override int GetHashCode ()
1859 return ret_type.GetHashCode ();
1862 public override bool Equals (object o)
1864 OperatorEntry other = (OperatorEntry) o;
1866 if (other.ret_type != ret_type)
1868 if (other.type1 != type1)
1870 if (other.type2 != type2)
1877 // Checks that some operators come in pairs:
1882 // They are matched based on the return type and the argument types
1884 void CheckPairedOperators ()
1886 Hashtable pairs = new Hashtable (null, null);
1888 // Register all the operators we care about.
1889 foreach (Operator op in operators){
1892 switch (op.OperatorType){
1893 case Operator.OpType.Equality:
1895 case Operator.OpType.Inequality:
1898 case Operator.OpType.GreaterThan:
1900 case Operator.OpType.LessThan:
1903 case Operator.OpType.GreaterThanOrEqual:
1905 case Operator.OpType.LessThanOrEqual:
1911 OperatorEntry oe = new OperatorEntry (reg, op);
1913 object o = pairs [oe];
1917 oe = (OperatorEntry) o;
1923 // Look for the mistakes.
1925 foreach (DictionaryEntry de in pairs){
1926 OperatorEntry oe = (OperatorEntry) de.Key;
1933 case Operator.OpType.Equality:
1936 case Operator.OpType.Inequality:
1939 case Operator.OpType.GreaterThan:
1942 case Operator.OpType.LessThan:
1945 case Operator.OpType.GreaterThanOrEqual:
1948 case Operator.OpType.LessThanOrEqual:
1952 Report.Error (216, oe.op.Location,
1953 "The operator `" + oe.op + "' requires a matching operator `" + s + "' to also be defined");
1960 public class Class : TypeContainer {
1962 // Modifiers allowed in a class declaration
1964 public const int AllowedModifiers =
1967 Modifiers.PROTECTED |
1968 Modifiers.INTERNAL |
1970 Modifiers.ABSTRACT |
1974 public Class (TypeContainer parent, string name, int mod, Attributes attrs, Location l)
1975 : base (parent, name, l)
1979 if (parent.Parent == null)
1980 accmods = Modifiers.INTERNAL;
1982 accmods = Modifiers.PRIVATE;
1984 this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, l);
1985 this.attributes = attrs;
1989 // FIXME: How do we deal with the user specifying a different
1992 public override TypeAttributes TypeAttr {
1994 return base.TypeAttr | TypeAttributes.AutoLayout | TypeAttributes.Class;
1999 public class Struct : TypeContainer {
2001 // Modifiers allowed in a struct declaration
2003 public const int AllowedModifiers =
2006 Modifiers.PROTECTED |
2007 Modifiers.INTERNAL |
2011 public Struct (TypeContainer parent, string name, int mod, Attributes attrs, Location l)
2012 : base (parent, name, l)
2016 if (parent.Parent == null)
2017 accmods = Modifiers.INTERNAL;
2019 accmods = Modifiers.PRIVATE;
2021 this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, l);
2023 this.ModFlags |= Modifiers.SEALED;
2024 this.attributes = attrs;
2029 // FIXME: Allow the user to specify a different set of attributes
2030 // in some cases (Sealed for example is mandatory for a class,
2031 // but what SequentialLayout can be changed
2033 public override TypeAttributes TypeAttr {
2035 return base.TypeAttr |
2036 TypeAttributes.SequentialLayout |
2037 TypeAttributes.Sealed |
2038 TypeAttributes.BeforeFieldInit;
2043 public abstract class MethodCore : MemberBase {
2044 public /* readonly */ Parameters Parameters;
2048 // Parameters, cached for semantic analysis.
2050 protected InternalParameters parameter_info;
2051 protected Type [] parameter_types;
2053 public MethodCore (Expression type, int mod, int allowed_mod, string name,
2054 Attributes attrs, Parameters parameters, Location loc)
2055 : base (type, mod, allowed_mod, name, attrs, loc)
2057 Parameters = parameters;
2061 // Returns the System.Type array for the parameters of this method
2063 public Type [] ParameterTypes {
2065 return parameter_types;
2069 public InternalParameters ParameterInfo
2072 return parameter_info;
2076 public Block Block {
2086 protected virtual bool DoDefineParameters (TypeContainer parent)
2088 // Check if arguments were correct
2089 parameter_types = Parameters.GetParameterInfo (parent);
2090 if ((parameter_types == null) || !CheckParameters (parent, parameter_types))
2093 parameter_info = new InternalParameters (parent, Parameters);
2098 public CallingConventions GetCallingConvention (bool is_class)
2100 CallingConventions cc = 0;
2102 cc = Parameters.GetCallingConvention ();
2105 if ((ModFlags & Modifiers.STATIC) == 0)
2106 cc |= CallingConventions.HasThis;
2108 // FIXME: How is `ExplicitThis' used in C#?
2113 public void LabelParameters (EmitContext ec, Type [] parameters, MethodBase builder)
2115 LabelParameters (ec, parameters, builder, null);
2118 public void LabelParameters (EmitContext ec, Type [] parameters, MethodBase builder, Parameters p_params)
2121 // Define each type attribute (in/out/ref) and
2122 // the argument names.
2124 Parameter [] p = p_params == null ? Parameters.FixedParameters : p_params.FixedParameters;
2127 MethodBuilder mb = null;
2128 ConstructorBuilder cb = null;
2130 if (builder is MethodBuilder)
2131 mb = (MethodBuilder) builder;
2133 cb = (ConstructorBuilder) builder;
2136 for (i = 0; i < p.Length; i++) {
2137 ParameterBuilder pb;
2140 pb = cb.DefineParameter (
2141 i + 1, p [i].Attributes, p [i].Name);
2143 pb = mb.DefineParameter (
2144 i + 1, p [i].Attributes, p [i].Name);
2146 Attributes attr = p [i].OptAttributes;
2148 Attribute.ApplyAttributes (ec, pb, pb, attr, Location);
2152 if (Parameters.ArrayParameter != null){
2153 ParameterBuilder pb;
2154 Parameter array_param = Parameters.ArrayParameter;
2157 pb = cb.DefineParameter (
2158 i + 1, array_param.Attributes,
2161 pb = mb.DefineParameter (
2162 i + 1, array_param.Attributes,
2165 CustomAttributeBuilder a = new CustomAttributeBuilder (
2166 TypeManager.cons_param_array_attribute, new object [0]);
2168 pb.SetCustomAttribute (a);
2173 public class Method : MethodCore {
2174 public MethodBuilder MethodBuilder;
2175 public MethodData MethodData;
2178 /// Modifiers allowed in a class declaration
2180 const int AllowedModifiers =
2183 Modifiers.PROTECTED |
2184 Modifiers.INTERNAL |
2189 Modifiers.OVERRIDE |
2190 Modifiers.ABSTRACT |
2195 // return_type can be "null" for VOID values.
2197 public Method (Expression return_type, int mod, string name, Parameters parameters,
2198 Attributes attrs, Location l)
2199 : base (return_type, mod, AllowedModifiers, name, attrs, parameters, l)
2203 // Returns the `System.Type' for the ReturnType of this
2204 // function. Provides a nice cache. (used between semantic analysis
2205 // and actual code generation
2207 public Type GetReturnType ()
2212 // Whether this is an operator method.
2213 public bool IsOperator;
2215 void DuplicateEntryPoint (MethodInfo b, Location location)
2219 "Program `" + CodeGen.FileName +
2220 "' has more than one entry point defined: `" +
2221 TypeManager.CSharpSignature(b) + "'");
2224 void Report28 (MethodInfo b)
2226 if (RootContext.WarningLevel < 4)
2231 "`" + TypeManager.CSharpSignature(b) +
2232 "' has the wrong signature to be an entry point");
2235 public bool IsEntryPoint (MethodBuilder b, InternalParameters pinfo)
2237 if (b.ReturnType != TypeManager.void_type &&
2238 b.ReturnType != TypeManager.int32_type)
2241 if (pinfo.Count == 0)
2244 if (pinfo.Count > 1)
2247 Type t = pinfo.ParameterType(0);
2249 (t.GetArrayRank() == 1) &&
2250 (t.GetElementType() == TypeManager.string_type) &&
2251 (pinfo.ParameterModifier(0) == Parameter.Modifier.NONE))
2258 // Checks our base implementation if any
2260 protected override bool CheckBase (TypeContainer parent)
2262 // Check whether arguments were correct.
2263 if (!DoDefineParameters (parent))
2266 MethodSignature ms = new MethodSignature (Name, null, ParameterTypes);
2270 mi_this = TypeContainer.FindMembers (
2271 parent.TypeBuilder, MemberTypes.Method,
2272 BindingFlags.NonPublic | BindingFlags.Public |
2273 BindingFlags.Static | BindingFlags.Instance |
2274 BindingFlags.DeclaredOnly,
2275 MethodSignature.method_signature_filter, ms);
2277 if (mi_this.Count > 0) {
2278 Report.Error (111, Location, "Class `" + parent.Name + "' " +
2279 "already defines a member called `" + Name + "' " +
2280 "with the same parameter types");
2286 // Verify if the parent has a type with the same name, and then
2287 // check whether we have to create a new slot for it or not.
2289 Type ptype = parent.TypeBuilder.BaseType;
2291 // ptype is only null for System.Object while compiling corlib.
2293 MemberList mi, mi_static, mi_instance;
2295 mi_static = TypeContainer.FindMembers (
2296 ptype, MemberTypes.Method,
2297 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static,
2298 MethodSignature.inheritable_method_signature_filter, ms);
2300 mi_instance = TypeContainer.FindMembers (
2301 ptype, MemberTypes.Method,
2302 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance,
2303 MethodSignature.inheritable_method_signature_filter,
2306 if (mi_instance.Count > 0){
2308 } else if (mi_static.Count > 0)
2313 if (mi != null && mi.Count > 0){
2314 parent_method = (MethodInfo) mi [0];
2315 string name = parent_method.DeclaringType.Name + "." +
2318 if (!CheckMethodAgainstBase (parent, flags, parent_method, name))
2321 if ((ModFlags & Modifiers.NEW) == 0) {
2322 Type parent_ret = TypeManager.TypeToCoreType (
2323 parent_method.ReturnType);
2325 if (parent_ret != MemberType) {
2327 508, parent.MakeName (Name) + ": cannot " +
2328 "change return type when overriding " +
2329 "inherited member " + name);
2334 if ((ModFlags & Modifiers.NEW) != 0)
2335 WarningNotHiding (parent);
2337 if ((ModFlags & Modifiers.OVERRIDE) != 0){
2338 Report.Error (115, Location,
2339 parent.MakeName (Name) +
2340 " no suitable methods found to override");
2343 } else if ((ModFlags & Modifiers.NEW) != 0)
2344 WarningNotHiding (parent);
2352 public override bool Define (TypeContainer parent)
2354 if (!DoDefine (parent))
2357 if (!CheckBase (parent))
2360 CallingConventions cc = GetCallingConvention (parent is Class);
2362 MethodData = new MethodData (this, null, MemberType, ParameterTypes,
2363 ParameterInfo, cc, OptAttributes,
2364 ModFlags, flags, true);
2366 if (!MethodData.Define (parent))
2369 MethodBuilder = MethodData.MethodBuilder;
2372 // This is used to track the Entry Point,
2374 if (Name == "Main" &&
2375 ((ModFlags & Modifiers.STATIC) != 0) &&
2376 (RootContext.MainClass == null ||
2377 RootContext.MainClass == parent.TypeBuilder.FullName)){
2378 if (IsEntryPoint (MethodBuilder, ParameterInfo)) {
2379 if (RootContext.EntryPoint == null) {
2380 RootContext.EntryPoint = MethodBuilder;
2381 RootContext.EntryPointLocation = Location;
2383 DuplicateEntryPoint (RootContext.EntryPoint, RootContext.EntryPointLocation);
2384 DuplicateEntryPoint (MethodBuilder, Location);
2387 Report28(MethodBuilder);
2396 public void Emit (TypeContainer parent)
2398 MethodData.Emit (parent, Block, this);
2402 public abstract class ConstructorInitializer {
2403 ArrayList argument_list;
2404 ConstructorInfo parent_constructor;
2405 Parameters parameters;
2408 public ConstructorInitializer (ArrayList argument_list, Parameters parameters,
2411 this.argument_list = argument_list;
2412 this.parameters = parameters;
2416 public ArrayList Arguments {
2418 return argument_list;
2422 public bool Resolve (EmitContext ec)
2424 Expression parent_constructor_group;
2427 ec.CurrentBlock = new Block (null, true, parameters);
2429 if (argument_list != null){
2430 foreach (Argument a in argument_list){
2431 if (!a.Resolve (ec, loc))
2436 ec.CurrentBlock = null;
2438 if (this is ConstructorBaseInitializer) {
2439 if (ec.ContainerType.BaseType == null)
2442 t = ec.ContainerType.BaseType;
2443 if (ec.ContainerType.IsValueType) {
2444 Report.Error (522, loc,
2445 "structs cannot call base class constructors");
2449 t = ec.ContainerType;
2451 parent_constructor_group = Expression.MemberLookup (
2453 MemberTypes.Constructor,
2454 BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly,
2457 if (parent_constructor_group == null){
2458 Report.Error (1501, loc,
2459 "Can not find a constructor for this argument list");
2463 parent_constructor = (ConstructorInfo) Invocation.OverloadResolve (ec,
2464 (MethodGroupExpr) parent_constructor_group, argument_list, loc);
2466 if (parent_constructor == null){
2467 Report.Error (1501, loc,
2468 "Can not find a constructor for this argument list");
2475 public void Emit (EmitContext ec)
2477 if (parent_constructor != null){
2479 Invocation.EmitCall (ec, true, true, null, parent_constructor, argument_list, loc);
2481 Invocation.EmitCall (ec, true, false, ec.This, parent_constructor, argument_list, loc);
2486 public class ConstructorBaseInitializer : ConstructorInitializer {
2487 public ConstructorBaseInitializer (ArrayList argument_list, Parameters pars, Location l) :
2488 base (argument_list, pars, l)
2493 public class ConstructorThisInitializer : ConstructorInitializer {
2494 public ConstructorThisInitializer (ArrayList argument_list, Parameters pars, Location l) :
2495 base (argument_list, pars, l)
2500 public class Constructor : MethodCore {
2501 public ConstructorBuilder ConstructorBuilder;
2502 public ConstructorInitializer Initializer;
2503 new public Attributes OptAttributes;
2506 // Modifiers allowed for a constructor.
2508 public const int AllowedModifiers =
2510 Modifiers.PROTECTED |
2511 Modifiers.INTERNAL |
2518 // The spec claims that static is not permitted, but
2519 // my very own code has static constructors.
2521 public Constructor (string name, Parameters args, ConstructorInitializer init, Location l)
2522 : base (null, 0, AllowedModifiers, name, null, args, l)
2528 // Returns true if this is a default constructor
2530 public bool IsDefault ()
2532 if ((ModFlags & Modifiers.STATIC) != 0)
2533 return (Parameters.FixedParameters == null ? true : Parameters.Empty) &&
2534 (Parameters.ArrayParameter == null ? true : Parameters.Empty);
2537 return (Parameters.FixedParameters == null ? true : Parameters.Empty) &&
2538 (Parameters.ArrayParameter == null ? true : Parameters.Empty) &&
2539 (Initializer is ConstructorBaseInitializer) &&
2540 (Initializer.Arguments == null);
2544 // Creates the ConstructorBuilder
2546 public override bool Define (TypeContainer parent)
2548 MethodAttributes ca = (MethodAttributes.RTSpecialName |
2549 MethodAttributes.SpecialName);
2551 // Check if arguments were correct.
2552 if (!DoDefineParameters (parent))
2555 if ((ModFlags & Modifiers.STATIC) != 0)
2556 ca |= MethodAttributes.Static;
2558 if (parent is Struct && ParameterTypes.Length == 0){
2561 "Structs can not contain explicit parameterless " +
2565 ca |= MethodAttributes.HideBySig;
2567 if ((ModFlags & Modifiers.PUBLIC) != 0)
2568 ca |= MethodAttributes.Public;
2569 else if ((ModFlags & Modifiers.PROTECTED) != 0){
2570 if ((ModFlags & Modifiers.INTERNAL) != 0)
2571 ca |= MethodAttributes.FamORAssem;
2573 ca |= MethodAttributes.Family;
2574 } else if ((ModFlags & Modifiers.INTERNAL) != 0)
2575 ca |= MethodAttributes.Assembly;
2576 else if (IsDefault ())
2577 ca |= MethodAttributes.Public;
2579 ca |= MethodAttributes.Private;
2582 ConstructorBuilder = parent.TypeBuilder.DefineConstructor (
2583 ca, GetCallingConvention (parent is Class), ParameterTypes);
2586 // HACK because System.Reflection.Emit is lame
2588 if (!TypeManager.RegisterMethod (ConstructorBuilder, ParameterInfo, ParameterTypes)) {
2591 "Class `" +parent.Name+ "' already contains a definition with the " +
2592 "same return value and parameter types for constructor `" + Name
2603 public void Emit (TypeContainer parent)
2605 ILGenerator ig = ConstructorBuilder.GetILGenerator ();
2606 EmitContext ec = new EmitContext (parent, Location, ig, null, ModFlags, true);
2608 if ((ModFlags & Modifiers.STATIC) == 0){
2609 if (parent is Class && Initializer == null)
2610 Initializer = new ConstructorBaseInitializer (
2611 null, Parameters.EmptyReadOnlyParameters, parent.Location);
2615 // Spec mandates that Initializers will not have
2619 if (Initializer != null && !Initializer.Resolve (ec))
2621 ec.IsStatic = false;
2624 LabelParameters (ec, ParameterTypes, ConstructorBuilder);
2627 // Classes can have base initializers and instance field initializers.
2629 if (parent is Class){
2630 if ((ModFlags & Modifiers.STATIC) == 0)
2631 parent.EmitFieldInitializers (ec);
2633 if (Initializer != null)
2634 Initializer.Emit (ec);
2636 if ((ModFlags & Modifiers.STATIC) != 0)
2637 parent.EmitFieldInitializers (ec);
2639 Attribute.ApplyAttributes (ec, ConstructorBuilder, this, OptAttributes, Location);
2641 // If this is a non-static `struct' constructor and doesn't have any
2642 // initializer, it must initialize all of the struct's fields.
2643 if ((parent is Struct) && ((ModFlags & Modifiers.STATIC) == 0) &&
2644 (Initializer == null))
2645 Block.AddThisVariable (parent, Location);
2647 ec.EmitTopBlock (Block, ParameterInfo, Location);
2651 public class MethodData {
2653 // The return type of this method
2655 public readonly Type ReturnType;
2656 public readonly Type[] ParameterTypes;
2657 public readonly InternalParameters ParameterInfo;
2658 public readonly CallingConventions CallingConventions;
2659 public readonly Attributes OptAttributes;
2660 public readonly Location Location;
2663 // Are we implementing an interface ?
2665 public bool IsImplementing = false;
2670 protected MemberBase member;
2671 protected int modifiers;
2672 protected MethodAttributes flags;
2673 protected bool is_method;
2674 protected string accessor_name;
2675 ArrayList conditionals;
2677 MethodBuilder builder = null;
2678 public MethodBuilder MethodBuilder {
2684 public MethodData (MemberBase member, string name, Type return_type,
2685 Type [] parameter_types, InternalParameters parameters,
2686 CallingConventions cc, Attributes opt_attrs,
2687 int modifiers, MethodAttributes flags, bool is_method)
2689 this.member = member;
2690 this.accessor_name = name;
2691 this.ReturnType = return_type;
2692 this.ParameterTypes = parameter_types;
2693 this.ParameterInfo = parameters;
2694 this.CallingConventions = cc;
2695 this.OptAttributes = opt_attrs;
2696 this.modifiers = modifiers;
2698 this.is_method = is_method;
2699 this.Location = member.Location;
2700 this.conditionals = new ArrayList ();
2706 Attribute dllimport_attribute = null;
2707 string obsolete = null;
2708 bool obsolete_error = false;
2710 public virtual bool ApplyAttributes (Attributes opt_attrs, bool is_method)
2712 if ((opt_attrs == null) || (opt_attrs.AttributeSections == null))
2715 foreach (AttributeSection asec in opt_attrs.AttributeSections) {
2716 if (asec.Attributes == null)
2719 foreach (Attribute a in asec.Attributes) {
2720 if (a.Name == "Conditional") {
2721 if (!ApplyConditionalAttribute (a))
2723 } else if (a.Name == "Obsolete") {
2724 if (!ApplyObsoleteAttribute (a))
2726 } else if (a.Name.IndexOf ("DllImport") != -1) {
2728 a.Type = TypeManager.dllimport_type;
2729 Attribute.Error_AttributeNotValidForElement (a, Location);
2732 if (!ApplyDllImportAttribute (a))
2742 // Applies the `DllImport' attribute to the method.
2744 protected virtual bool ApplyDllImportAttribute (Attribute a)
2746 const int extern_static = Modifiers.EXTERN | Modifiers.STATIC;
2747 if ((modifiers & extern_static) != extern_static) {
2748 Report.Error (601, Location,
2749 "The DllImport attribute must be specified on a method " +
2750 "marked `static' and `extern'.");
2754 flags |= MethodAttributes.PinvokeImpl;
2755 dllimport_attribute = a;
2760 // Applies the `Obsolete' attribute to the method.
2762 protected virtual bool ApplyObsoleteAttribute (Attribute a)
2764 if (obsolete != null) {
2765 Report.Error (579, Location, "Duplicate `Obsolete' attribute");
2769 obsolete = a.Obsolete_GetObsoleteMessage (out obsolete_error);
2770 return obsolete != null;
2774 // Applies the `Conditional' attribute to the method.
2776 protected virtual bool ApplyConditionalAttribute (Attribute a)
2778 // The Conditional attribute is only valid on methods.
2780 Attribute.Error_AttributeNotValidForElement (a, Location);
2784 string condition = a.Conditional_GetConditionName ();
2786 if (condition == null)
2789 if (ReturnType != TypeManager.void_type) {
2790 Report.Error (578, Location,
2791 "Conditional not valid on `" + member.Name + "' " +
2792 "because its return type is not void");
2796 if ((modifiers & Modifiers.OVERRIDE) != 0) {
2797 Report.Error (243, Location,
2798 "Conditional not valid on `" + member.Name + "' " +
2799 "because it is an override method");
2803 if (member.IsExplicitImpl) {
2804 Report.Error (577, Location,
2805 "Conditional not valid on `" + member.Name + "' " +
2806 "because it is an explicit interface implementation");
2810 if (IsImplementing) {
2811 Report.Error (623, Location,
2812 "Conditional not valid on `" + member.Name + "' " +
2813 "because it is an interface method");
2817 conditionals.Add (condition);
2823 // Checks whether this method should be ignored due to its Conditional attributes.
2825 bool ShouldIgnore (Location loc)
2827 // When we're overriding a virtual method, we implicitly inherit the
2828 // Conditional attributes from our parent.
2829 if (member.ParentMethod != null) {
2830 TypeManager.MethodFlags flags = TypeManager.GetMethodFlags (
2831 member.ParentMethod, loc);
2833 if ((flags & TypeManager.MethodFlags.ShouldIgnore) != 0)
2837 foreach (string condition in conditionals)
2838 if (RootContext.AllDefines [condition] == null)
2845 // Returns the TypeManager.MethodFlags for this method.
2846 // This emits an error 619 / warning 618 if the method is obsolete.
2847 // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
2849 public virtual TypeManager.MethodFlags GetMethodFlags (Location loc)
2851 TypeManager.MethodFlags flags = 0;
2853 if (obsolete != null) {
2854 if (obsolete_error) {
2855 Report.Error (619, loc, "Method `" + member.Name +
2856 "' is obsolete: `" + obsolete + "'");
2857 return TypeManager.MethodFlags.IsObsoleteError;
2859 Report.Warning (618, loc, "Method `" + member.Name +
2860 "' is obsolete: `" + obsolete + "'");
2862 flags |= TypeManager.MethodFlags.IsObsolete;
2865 if (ShouldIgnore (loc))
2866 flags |= TypeManager.MethodFlags.ShouldIgnore;
2871 public virtual bool Define (TypeContainer parent)
2873 MethodInfo implementing = null;
2874 string method_name, name, prefix;
2876 if (OptAttributes != null)
2877 if (!ApplyAttributes (OptAttributes, is_method))
2880 if (member.IsExplicitImpl)
2881 prefix = member.InterfaceType.FullName + ".";
2885 if (accessor_name != null)
2886 name = accessor_name + "_" + member.ShortName;
2888 name = member.ShortName;
2889 method_name = prefix + name;
2891 if (parent.Pending != null){
2892 if (member is Indexer)
2893 implementing = parent.Pending.IsInterfaceIndexer (
2894 member.InterfaceType, ReturnType, ParameterTypes);
2896 implementing = parent.Pending.IsInterfaceMethod (
2897 member.InterfaceType, name, ReturnType, ParameterTypes);
2899 if (member.InterfaceType != null && implementing == null){
2900 TypeContainer.Error_ExplicitInterfaceNotMemberInterface (
2907 // For implicit implementations, make sure we are public, for
2908 // explicit implementations, make sure we are private.
2910 if (implementing != null){
2912 // Setting null inside this block will trigger a more
2913 // verbose error reporting for missing interface implementations
2915 // The "candidate" function has been flagged already
2916 // but it wont get cleared
2918 if (!member.IsExplicitImpl){
2920 // We already catch different accessibility settings
2921 // so we just need to check that we are not private
2923 if ((modifiers & Modifiers.PRIVATE) != 0)
2924 implementing = null;
2927 // Static is not allowed
2929 if ((modifiers & Modifiers.STATIC) != 0)
2930 implementing = null;
2932 if ((modifiers & (Modifiers.PUBLIC | Modifiers.ABSTRACT | Modifiers.VIRTUAL)) != 0){
2933 Modifiers.Error_InvalidModifier (Location, "public, virtual or abstract");
2934 implementing = null;
2940 // If implementing is still valid, set flags
2942 if (implementing != null){
2944 // When implementing interface methods, set NewSlot.
2946 if (implementing.DeclaringType.IsInterface)
2947 flags |= MethodAttributes.NewSlot;
2950 MethodAttributes.Virtual |
2951 MethodAttributes.HideBySig;
2953 // Get the method name from the explicit interface.
2954 if (member.InterfaceType != null) {
2955 name = implementing.Name;
2956 method_name = prefix + name;
2959 IsImplementing = true;
2963 // Create the MethodBuilder for the method
2965 if ((flags & MethodAttributes.PinvokeImpl) != 0) {
2966 if ((modifiers & Modifiers.STATIC) == 0) {
2967 Report.Error (601, Location,
2968 "The DllImport attribute must be specified on " +
2969 "a method marked 'static' and 'extern'.");
2973 EmitContext ec = new EmitContext (
2974 parent, Location, null, ReturnType, modifiers);
2976 builder = dllimport_attribute.DefinePInvokeMethod (
2977 ec, parent.TypeBuilder, method_name, flags,
2978 ReturnType, ParameterTypes);
2980 builder = parent.TypeBuilder.DefineMethod (
2981 method_name, flags, CallingConventions,
2982 ReturnType, ParameterTypes);
2984 if (builder == null)
2987 if (IsImplementing) {
2989 // clear the pending implemntation flag
2991 if (member is Indexer) {
2992 parent.Pending.ImplementIndexer (
2993 member.InterfaceType, builder, ReturnType,
2994 ParameterTypes, true);
2996 parent.Pending.ImplementMethod (
2997 member.InterfaceType, name, ReturnType,
2998 ParameterTypes, member.IsExplicitImpl);
3000 if (member.IsExplicitImpl)
3001 parent.TypeBuilder.DefineMethodOverride (
3002 builder, implementing);
3005 if (!TypeManager.RegisterMethod (builder, ParameterInfo, ParameterTypes)) {
3006 Report.Error (111, Location,
3007 "Class `" + parent.Name +
3008 "' already contains a definition with the " +
3009 "same return value and parameter types as the " +
3010 "'get' method of property `" + member.Name + "'");
3014 TypeManager.AddMethod (builder, this);
3022 public virtual void Emit (TypeContainer parent, Block block, object kind)
3027 if ((flags & MethodAttributes.PinvokeImpl) == 0)
3028 ig = builder.GetILGenerator ();
3032 ec = new EmitContext (parent, Location, ig, ReturnType, modifiers);
3034 if (OptAttributes != null)
3035 Attribute.ApplyAttributes (ec, builder, kind, OptAttributes, Location);
3037 if (member is MethodCore)
3038 ((MethodCore) member).LabelParameters (ec, ParameterTypes, MethodBuilder);
3041 // abstract or extern methods have no bodies
3043 if ((modifiers & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0){
3048 // abstract or extern methods have no bodies.
3050 if ((modifiers & Modifiers.ABSTRACT) != 0)
3052 500, Location, "Abstract method `" +
3053 TypeManager.CSharpSignature (builder) +
3054 "' can not have a body");
3056 if ((modifiers & Modifiers.EXTERN) != 0)
3058 179, Location, "External method `" +
3059 TypeManager.CSharpSignature (builder) +
3060 "' can not have a body");
3066 // Methods must have a body unless they're extern or abstract
3068 if (block == null) {
3070 501, Location, "Method `" +
3071 TypeManager.CSharpSignature (builder) +
3072 "' must declare a body since it is not marked " +
3073 "abstract or extern");
3078 // Handle destructors specially
3080 // FIXME: This code generates buggy code
3082 if (member.Name == "Finalize" && ReturnType == TypeManager.void_type)
3083 EmitDestructor (ec, block);
3085 ISymbolWriter sw = CodeGen.SymbolWriter;
3087 if ((sw != null) && !Location.IsNull (Location) &&
3088 !Location.IsNull (block.EndLocation)) {
3089 Location end = block.EndLocation;
3090 MethodToken token = MethodBuilder.GetToken ();
3091 sw.OpenMethod (new SymbolToken (token.Token));
3092 // Avoid error if we don't support debugging for the platform
3094 sw.SetMethodSourceRange (Location.SymbolDocument,
3098 } catch (Exception) {
3101 ec.EmitTopBlock (block, member.Name, ParameterInfo, Location);
3105 ec.EmitTopBlock (block, member.Name, ParameterInfo, Location);
3109 void EmitDestructor (EmitContext ec, Block block)
3111 ILGenerator ig = ec.ig;
3113 Label finish = ig.DefineLabel ();
3114 bool old_in_try = ec.InTry;
3116 ig.BeginExceptionBlock ();
3118 ec.ReturnLabel = finish;
3119 ec.HasReturnLabel = true;
3120 ec.EmitTopBlock (block, null, Location);
3121 ec.InTry = old_in_try;
3123 // ig.MarkLabel (finish);
3124 bool old_in_finally = ec.InFinally;
3125 ec.InFinally = true;
3126 ig.BeginFinallyBlock ();
3128 if (ec.ContainerType.BaseType != null) {
3129 Expression member_lookup = Expression.MemberLookup (
3130 ec, ec.ContainerType.BaseType, ec.ContainerType.BaseType, "Finalize",
3131 MemberTypes.Method, Expression.AllBindingFlags, Location);
3133 if (member_lookup != null){
3134 MethodGroupExpr parent_destructor = ((MethodGroupExpr) member_lookup);
3136 ig.Emit (OpCodes.Ldarg_0);
3137 ig.Emit (OpCodes.Call, (MethodInfo) parent_destructor.Methods [0]);
3140 ec.InFinally = old_in_finally;
3142 ig.EndExceptionBlock ();
3143 //ig.MarkLabel (ec.ReturnLabel);
3144 ig.Emit (OpCodes.Ret);
3148 abstract public class MemberBase : MemberCore {
3149 public Expression Type;
3150 public readonly Attributes OptAttributes;
3152 protected MethodAttributes flags;
3155 // The "short" name of this property / indexer / event. This is the
3156 // name without the explicit interface.
3158 public string ShortName;
3161 // The type of this property / indexer / event
3163 public Type MemberType;
3166 // If true, this is an explicit interface implementation
3168 public bool IsExplicitImpl = false;
3171 // The name of the interface we are explicitly implementing
3173 public string ExplicitInterfaceName = null;
3176 // If true, the interface type we are explicitly implementing
3178 public Type InterfaceType = null;
3181 // The method we're overriding if this is an override method.
3183 protected MethodInfo parent_method = null;
3184 public MethodInfo ParentMethod {
3186 return parent_method;
3191 // The constructor is only exposed to our children
3193 protected MemberBase (Expression type, int mod, int allowed_mod, string name,
3194 Attributes attrs, Location loc)
3198 ModFlags = Modifiers.Check (allowed_mod, mod, Modifiers.PRIVATE, loc);
3199 OptAttributes = attrs;
3202 protected virtual bool CheckBase (TypeContainer parent)
3207 protected virtual bool CheckParameters (TypeContainer parent, Type [] parameters)
3211 foreach (Type partype in parameters){
3212 if (partype.IsPointer && !UnsafeOK (parent))
3215 if (parent.AsAccessible (partype, ModFlags))
3218 if (this is Indexer)
3219 Report.Error (55, Location,
3220 "Inconsistent accessibility: parameter type `" +
3221 TypeManager.CSharpName (partype) + "' is less " +
3222 "accessible than indexer `" + Name + "'");
3224 Report.Error (51, Location,
3225 "Inconsistent accessibility: parameter type `" +
3226 TypeManager.CSharpName (partype) + "' is less " +
3227 "accessible than method `" + Name + "'");
3234 protected virtual bool DoDefine (TypeContainer parent)
3239 if (!parent.MethodModifiersValid (ModFlags, Name, Location))
3242 flags = Modifiers.MethodAttr (ModFlags);
3244 // Lookup Type, verify validity
3245 MemberType = parent.ResolveType (Type, false, Location);
3246 if (MemberType == null)
3249 // verify accessibility
3250 if (!parent.AsAccessible (MemberType, ModFlags)) {
3251 if (this is Property)
3252 Report.Error (53, Location,
3253 "Inconsistent accessibility: property type `" +
3254 TypeManager.CSharpName (MemberType) + "' is less " +
3255 "accessible than property `" + Name + "'");
3256 else if (this is Indexer)
3257 Report.Error (54, Location,
3258 "Inconsistent accessibility: indexer return type `" +
3259 TypeManager.CSharpName (MemberType) + "' is less " +
3260 "accessible than indexer `" + Name + "'");
3261 else if (this is Method)
3262 Report.Error (50, Location,
3263 "Inconsistent accessibility: return type `" +
3264 TypeManager.CSharpName (MemberType) + "' is less " +
3265 "accessible than method `" + Name + "'");
3267 Report.Error (52, Location,
3268 "Inconsistent accessibility: field type `" +
3269 TypeManager.CSharpName (MemberType) + "' is less " +
3270 "accessible than field `" + Name + "'");
3274 if (MemberType.IsPointer && !UnsafeOK (parent))
3278 // Check for explicit interface implementation
3280 if ((ExplicitInterfaceName == null) && (Name.IndexOf (".") != -1)){
3281 int pos = Name.LastIndexOf (".");
3283 ExplicitInterfaceName = Name.Substring (0, pos);
3284 ShortName = Name.Substring (pos + 1);
3288 if (ExplicitInterfaceName != null) {
3289 InterfaceType = RootContext.LookupType (
3290 parent, ExplicitInterfaceName, false, Location);
3291 if (InterfaceType == null)
3294 // Compute the full name that we need to export.
3295 Name = InterfaceType.FullName + "." + ShortName;
3297 if (!parent.VerifyImplements (InterfaceType, ShortName, Name, Location))
3300 IsExplicitImpl = true;
3302 IsExplicitImpl = false;
3309 // Fields and Events both generate FieldBuilders, we use this to share
3310 // their common bits. This is also used to flag usage of the field
3312 abstract public class FieldBase : MemberBase {
3313 public FieldBuilder FieldBuilder;
3314 public Status status;
3317 public enum Status : byte { ASSIGNED = 1, USED = 2 }
3320 // The constructor is only exposed to our children
3322 protected FieldBase (Expression type, int mod, int allowed_mod, string name,
3323 object init, Attributes attrs, Location loc)
3324 : base (type, mod, allowed_mod, name, attrs, loc)
3330 // Whether this field has an initializer.
3332 public bool HasInitializer {
3334 return init != null;
3339 readonly Object init;
3340 Expression init_expr;
3341 bool init_expr_initialized = false;
3344 // Resolves and returns the field initializer.
3346 public Expression GetInitializerExpression (EmitContext ec)
3348 if (init_expr_initialized)
3352 if (init is Expression)
3353 e = (Expression) init;
3355 e = new ArrayCreation (Type, "", (ArrayList)init, Location);
3357 ec.IsFieldInitializer = true;
3358 e = e.DoResolve (ec);
3359 ec.IsFieldInitializer = false;
3362 init_expr_initialized = true;
3369 // The Field class is used to represents class/struct fields during parsing.
3371 public class Field : FieldBase {
3373 // Modifiers allowed in a class declaration
3375 const int AllowedModifiers =
3378 Modifiers.PROTECTED |
3379 Modifiers.INTERNAL |
3382 Modifiers.VOLATILE |
3386 public Field (Expression type, int mod, string name, Object expr_or_array_init,
3387 Attributes attrs, Location loc)
3388 : base (type, mod, AllowedModifiers, name, expr_or_array_init, attrs, loc)
3392 public override bool Define (TypeContainer parent)
3394 Type t = parent.ResolveType (Type, false, Location);
3399 if (!parent.AsAccessible (t, ModFlags)) {
3400 Report.Error (52, Location,
3401 "Inconsistent accessibility: field type `" +
3402 TypeManager.CSharpName (t) + "' is less " +
3403 "accessible than field `" + Name + "'");
3407 if (t.IsPointer && !UnsafeOK (parent))
3410 if (RootContext.WarningLevel > 1){
3411 Type ptype = parent.TypeBuilder.BaseType;
3413 // ptype is only null for System.Object while compiling corlib.
3415 TypeContainer.FindMembers (
3416 ptype, MemberTypes.Method,
3417 BindingFlags.Public |
3418 BindingFlags.Static | BindingFlags.Instance,
3419 System.Type.FilterName, Name);
3423 if ((ModFlags & Modifiers.VOLATILE) != 0){
3425 if (TypeManager.IsEnumType (t))
3426 t = TypeManager.EnumToUnderlying (t);
3428 if (!((t == TypeManager.bool_type) ||
3429 (t == TypeManager.sbyte_type) ||
3430 (t == TypeManager.byte_type) ||
3431 (t == TypeManager.short_type) ||
3432 (t == TypeManager.ushort_type) ||
3433 (t == TypeManager.int32_type) ||
3434 (t == TypeManager.uint32_type) ||
3435 (t == TypeManager.char_type) ||
3436 (t == TypeManager.float_type))){
3438 677, Location, parent.MakeName (Name) +
3439 " A volatile field can not be of type `" +
3440 TypeManager.CSharpName (t) + "'");
3446 FieldAttributes fa = Modifiers.FieldAttr (ModFlags);
3448 if (parent is Struct &&
3449 ((fa & FieldAttributes.Static) == 0) &&
3450 t == parent.TypeBuilder &&
3451 !TypeManager.IsBuiltinType (t)){
3452 Report.Error (523, Location, "Struct member `" + parent.Name + "." + Name +
3453 "' causes a cycle in the structure layout");
3456 FieldBuilder = parent.TypeBuilder.DefineField (
3457 Name, t, Modifiers.FieldAttr (ModFlags));
3459 TypeManager.RegisterFieldBase (FieldBuilder, this);
3463 public void Emit (TypeContainer tc)
3465 EmitContext ec = new EmitContext (tc, Location, null,
3466 FieldBuilder.FieldType, ModFlags);
3468 Attribute.ApplyAttributes (ec, FieldBuilder, this, OptAttributes, Location);
3473 // `set' and `get' accessors are represented with an Accessor.
3475 public class Accessor {
3477 // Null if the accessor is empty, or a Block if not
3480 public Attributes OptAttributes;
3482 public Accessor (Block b, Attributes attrs)
3485 OptAttributes = attrs;
3490 // Properties and Indexers both generate PropertyBuilders, we use this to share
3491 // their common bits.
3493 abstract public class PropertyBase : MethodCore {
3494 public Accessor Get, Set;
3495 public PropertyBuilder PropertyBuilder;
3496 public MethodBuilder GetBuilder, SetBuilder;
3497 public MethodData GetData, SetData;
3499 protected EmitContext ec;
3501 public PropertyBase (Expression type, string name, int mod_flags, int allowed_mod,
3502 Parameters parameters, Accessor get_block, Accessor set_block,
3503 Attributes attrs, Location loc)
3504 : base (type, mod_flags, allowed_mod, name, attrs, parameters, loc)
3510 protected override bool DoDefine (TypeContainer parent)
3512 if (!base.DoDefine (parent))
3515 ec = new EmitContext (parent, Location, null, MemberType, ModFlags);
3521 // Checks our base implementation if any
3523 protected override bool CheckBase (TypeContainer parent)
3525 // Check whether arguments were correct.
3526 if (!DoDefineParameters (parent))
3533 MethodSignature ms, base_ms;
3534 if (this is Indexer) {
3535 string name, base_name;
3537 report_name = "this";
3538 name = TypeManager.IndexerPropertyName (parent.TypeBuilder);
3539 ms = new MethodSignature (name, null, ParameterTypes);
3540 base_name = TypeManager.IndexerPropertyName (parent.TypeBuilder.BaseType);
3541 base_ms = new MethodSignature (base_name, null, ParameterTypes);
3544 ms = base_ms = new MethodSignature (Name, null, ParameterTypes);
3547 MemberList props_this;
3549 props_this = TypeContainer.FindMembers (
3550 parent.TypeBuilder, MemberTypes.Property,
3551 BindingFlags.NonPublic | BindingFlags.Public |
3552 BindingFlags.Static | BindingFlags.Instance |
3553 BindingFlags.DeclaredOnly,
3554 MethodSignature.method_signature_filter, ms);
3556 if (props_this.Count > 0) {
3557 Report.Error (111, Location, "Class `" + parent.Name + "' " +
3558 "already defines a member called `" + report_name + "' " +
3559 "with the same parameter types");
3564 // Find properties with the same name on the base class
3567 MemberList props_static = TypeContainer.FindMembers (
3568 parent.TypeBuilder.BaseType, MemberTypes.Property,
3569 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static,
3570 MethodSignature.inheritable_property_signature_filter, base_ms);
3572 MemberList props_instance = TypeContainer.FindMembers (
3573 parent.TypeBuilder.BaseType, MemberTypes.Property,
3574 BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance,
3575 MethodSignature.inheritable_property_signature_filter,
3579 // Find if we have anything
3581 if (props_static.Count > 0)
3582 props = props_static;
3583 else if (props_instance.Count > 0)
3584 props = props_instance;
3589 // If we have something on the base.
3590 if (props != null && props.Count > 0){
3591 PropertyInfo pi = (PropertyInfo) props [0];
3593 MethodInfo inherited_get = TypeManager.GetPropertyGetter (pi);
3594 MethodInfo inherited_set = TypeManager.GetPropertySetter (pi);
3596 MethodInfo reference = inherited_get == null ?
3597 inherited_set : inherited_get;
3599 if (reference != null) {
3600 string name = reference.DeclaringType.Name + "." + report_name;
3602 if (!CheckMethodAgainstBase (parent, flags, reference, name))
3606 if (((ModFlags & Modifiers.NEW) == 0) && (pi.PropertyType != MemberType)) {
3607 Report.Error (508, parent.MakeName (Name) + ": cannot " +
3608 "change return type when overriding inherited " +
3609 "member `" + pi.DeclaringType + "." + pi.Name + "'");
3613 if ((ModFlags & Modifiers.NEW) != 0)
3614 WarningNotHiding (parent);
3616 if ((ModFlags & Modifiers.OVERRIDE) != 0){
3617 if (this is Indexer)
3618 Report.Error (115, Location,
3619 parent.MakeName (Name) +
3620 " no suitable indexers found to override");
3622 Report.Error (115, Location,
3623 parent.MakeName (Name) +
3624 " no suitable properties found to override");
3631 public void Emit (TypeContainer tc)
3634 // The PropertyBuilder can be null for explicit implementations, in that
3635 // case, we do not actually emit the ".property", so there is nowhere to
3636 // put the attribute
3638 if (PropertyBuilder != null)
3639 Attribute.ApplyAttributes (ec, PropertyBuilder, this, OptAttributes, Location);
3641 if (GetData != null)
3642 GetData.Emit (tc, Get.Block, Get);
3644 if (SetData != null)
3645 SetData.Emit (tc, Set.Block, Set);
3650 public class Property : PropertyBase {
3651 const int AllowedModifiers =
3654 Modifiers.PROTECTED |
3655 Modifiers.INTERNAL |
3659 Modifiers.OVERRIDE |
3660 Modifiers.ABSTRACT |
3665 string set_parameter_name;
3666 Parameters get_params;
3667 Parameters set_params;
3669 public Property (Expression type, string name, int mod_flags,
3670 Accessor get_block, Accessor set_block,
3671 Attributes attrs, Location loc, string set_name,
3672 Parameters p_get, Parameters p_set)
3673 : base (type, name, mod_flags, AllowedModifiers,
3674 p_set, // FIXME ???????????
3675 get_block, set_block, attrs, loc)
3677 set_parameter_name = set_name;
3682 public Property (Expression type, string name, int mod_flags,
3683 Accessor get_block, Accessor set_block,
3684 Attributes attrs, Location loc)
3685 : base (type, name, mod_flags, AllowedModifiers,
3686 Parameters.EmptyReadOnlyParameters,
3687 get_block, set_block, attrs, loc)
3689 set_parameter_name = "Value";
3690 get_params = Parameters.EmptyReadOnlyParameters;
3691 set_params = Parameters.EmptyReadOnlyParameters;
3694 public override bool Define (TypeContainer parent)
3696 Type [] g_parameters=null, s_parameters=null;
3697 Parameter [] g_parms, s_parms;
3698 InternalParameters g_ip=null, s_ip=null;
3700 if (!DoDefine (parent))
3703 if (!CheckBase (parent))
3706 flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
3709 if (get_params == Parameters.EmptyReadOnlyParameters)
3711 g_parameters = TypeManager.NoTypes;
3712 g_ip = new InternalParameters (
3713 parent, Parameters.EmptyReadOnlyParameters);
3717 g_parameters = new Type [get_params.FixedParameters.Length];
3718 for (int i = 0; i < get_params.FixedParameters.Length; i ++)
3720 g_parameters[i] = get_params.FixedParameters[i].ParameterType;
3722 g_parms = new Parameter [get_params.FixedParameters.Length];
3723 for (int i = 0; i < get_params.FixedParameters.Length; i ++)
3725 Parameter tp = get_params.FixedParameters[i];
3726 g_parms[i] = new Parameter (tp.TypeName, tp.Name,
3727 Parameter.Modifier.NONE, null);
3729 g_ip = new InternalParameters (
3730 parent, new Parameters (g_parms, null, Location));
3733 GetData = new MethodData (this, "get", MemberType,
3734 g_parameters, g_ip, CallingConventions.Standard,
3735 Get.OptAttributes, ModFlags, flags, false);
3737 if (!GetData.Define (parent))
3740 GetBuilder = GetData.MethodBuilder;
3744 if (set_params == Parameters.EmptyReadOnlyParameters)
3746 s_parameters = new Type [1];
3747 s_parameters [0] = MemberType;
3749 s_parms = new Parameter [1];
3750 s_parms [0] = new Parameter (Type, /* was "value" */ set_parameter_name,
3751 Parameter.Modifier.NONE, null);
3755 s_parameters = new Type [set_params.FixedParameters.Length];
3756 for (int i = 0; i < set_params.FixedParameters.Length; i ++)
3758 s_parameters[i] = set_params.FixedParameters[i].ParameterType;
3761 s_parms = new Parameter [set_params.FixedParameters.Length];
3762 for (int i = 0; i < set_params.FixedParameters.Length; i ++)
3764 Parameter tp = set_params.FixedParameters[i];
3765 s_parms[i] = new Parameter (tp.TypeName, tp.Name,
3766 Parameter.Modifier.NONE, null);
3770 s_ip = new InternalParameters (
3771 parent, new Parameters (s_parms, null, Location));
3774 SetData = new MethodData (this, "set", TypeManager.void_type,
3775 s_parameters, s_ip, CallingConventions.Standard,
3776 Set.OptAttributes, ModFlags, flags, false);
3778 if (!SetData.Define (parent))
3781 SetBuilder = SetData.MethodBuilder;
3782 SetBuilder.DefineParameter (1, ParameterAttributes.None,
3783 /* was "value" */ set_parameter_name);
3786 // FIXME - PropertyAttributes.HasDefault ?
3788 PropertyAttributes prop_attr =
3789 PropertyAttributes.RTSpecialName |
3790 PropertyAttributes.SpecialName;
3792 if (!IsExplicitImpl){
3793 PropertyBuilder = parent.TypeBuilder.DefineProperty (
3794 Name, prop_attr, MemberType, null);
3797 PropertyBuilder.SetGetMethod (GetBuilder);
3800 PropertyBuilder.SetSetMethod (SetBuilder);
3803 // HACK for the reasons exposed above
3805 if (!TypeManager.RegisterProperty (PropertyBuilder, GetBuilder, SetBuilder)) {
3808 "Class `" + parent.Name +
3809 "' already contains a definition for the property `" +
3817 public void Emit (TypeContainer tc)
3821 if (GetData != null)
3823 Parameters = get_params;
3824 GetData.Emit (tc, Get.Block, Get);
3827 if (SetData != null)
3829 Parameters = set_params;
3830 SetData.Emit (tc, Set.Block, Set);
3837 /// Gigantic workaround for lameness in SRE follows :
3838 /// This class derives from EventInfo and attempts to basically
3839 /// wrap around the EventBuilder so that FindMembers can quickly
3840 /// return this in it search for members
3842 public class MyEventBuilder : EventInfo {
3845 // We use this to "point" to our Builder which is
3846 // not really a MemberInfo
3848 EventBuilder MyBuilder;
3851 // We "catch" and wrap these methods
3853 MethodInfo raise, remove, add;
3855 EventAttributes attributes;
3856 Type declaring_type, reflected_type, event_type;
3859 public MyEventBuilder (TypeBuilder type_builder, string name, EventAttributes event_attr, Type event_type)
3861 MyBuilder = type_builder.DefineEvent (name, event_attr, event_type);
3863 // And now store the values in our own fields.
3865 declaring_type = type_builder;
3867 reflected_type = type_builder;
3869 attributes = event_attr;
3871 this.event_type = event_type;
3875 // Methods that you have to override. Note that you only need
3876 // to "implement" the variants that take the argument (those are
3877 // the "abstract" methods, the others (GetAddMethod()) are
3880 public override MethodInfo GetAddMethod (bool nonPublic)
3885 public override MethodInfo GetRemoveMethod (bool nonPublic)
3890 public override MethodInfo GetRaiseMethod (bool nonPublic)
3896 // These methods make "MyEventInfo" look like a Builder
3898 public void SetRaiseMethod (MethodBuilder raiseMethod)
3900 raise = raiseMethod;
3901 MyBuilder.SetRaiseMethod (raiseMethod);
3904 public void SetRemoveOnMethod (MethodBuilder removeMethod)
3906 remove = removeMethod;
3907 MyBuilder.SetRemoveOnMethod (removeMethod);
3910 public void SetAddOnMethod (MethodBuilder addMethod)
3913 MyBuilder.SetAddOnMethod (addMethod);
3916 public void SetCustomAttribute (CustomAttributeBuilder cb)
3918 MyBuilder.SetCustomAttribute (cb);
3921 public override object [] GetCustomAttributes (bool inherit)
3923 // FIXME : There's nothing which can be seemingly done here because
3924 // we have no way of getting at the custom attribute objects of the
3929 public override object [] GetCustomAttributes (Type t, bool inherit)
3931 // FIXME : Same here !
3935 public override bool IsDefined (Type t, bool b)
3940 public override EventAttributes Attributes {
3946 public override string Name {
3952 public override Type DeclaringType {
3954 return declaring_type;
3958 public override Type ReflectedType {
3960 return reflected_type;
3964 public Type EventType {
3971 public class Event : FieldBase {
3972 const int AllowedModifiers =
3975 Modifiers.PROTECTED |
3976 Modifiers.INTERNAL |
3981 Modifiers.OVERRIDE |
3985 public readonly Accessor Add;
3986 public readonly Accessor Remove;
3987 public MyEventBuilder EventBuilder;
3989 MethodBuilder AddBuilder, RemoveBuilder;
3990 MethodData AddData, RemoveData;
3992 public Event (Expression type, string name, Object init, int mod, Accessor add,
3993 Accessor remove, Attributes attrs, Location loc)
3994 : base (type, mod, AllowedModifiers, name, init, attrs, loc)
4000 public override bool Define (TypeContainer parent)
4002 EventAttributes e_attr = EventAttributes.RTSpecialName | EventAttributes.SpecialName;
4004 if (!DoDefine (parent))
4007 if (!MemberType.IsSubclassOf (TypeManager.delegate_type)) {
4008 Report.Error (66, Location, "'" + parent.Name + "." + Name +
4009 "' : event must be of a delegate type");
4013 Type [] parameter_types = new Type [1];
4014 parameter_types [0] = MemberType;
4016 Parameter [] parms = new Parameter [1];
4017 parms [0] = new Parameter (Type, /* was "value" */ this.Name, Parameter.Modifier.NONE, null);
4018 InternalParameters ip = new InternalParameters (
4019 parent, new Parameters (parms, null, Location));
4021 if (!CheckBase (parent))
4025 // Now define the accessors
4027 AddData = new MethodData (this, "add", TypeManager.void_type,
4028 parameter_types, ip, CallingConventions.Standard,
4029 (Add != null) ? Add.OptAttributes : null,
4030 ModFlags, flags, false);
4032 if (!AddData.Define (parent))
4035 AddBuilder = AddData.MethodBuilder;
4036 AddBuilder.DefineParameter (1, ParameterAttributes.None, /* was "value" */ this.Name);
4038 RemoveData = new MethodData (this, "remove", TypeManager.void_type,
4039 parameter_types, ip, CallingConventions.Standard,
4040 (Remove != null) ? Remove.OptAttributes : null,
4041 ModFlags, flags, false);
4043 if (!RemoveData.Define (parent))
4046 RemoveBuilder = RemoveData.MethodBuilder;
4047 RemoveBuilder.DefineParameter (1, ParameterAttributes.None, /* was "value" */ this.Name);
4049 if (!IsExplicitImpl){
4050 EventBuilder = new MyEventBuilder (
4051 parent.TypeBuilder, Name, e_attr, MemberType);
4053 if (Add == null && Remove == null) {
4054 FieldBuilder = parent.TypeBuilder.DefineField (
4056 FieldAttributes.FamANDAssem | ((ModFlags & Modifiers.STATIC) != 0 ? FieldAttributes.Static : 0));
4057 TypeManager.RegisterPrivateFieldOfEvent (
4058 (EventInfo) EventBuilder, FieldBuilder);
4059 TypeManager.RegisterFieldBase (FieldBuilder, this);
4062 EventBuilder.SetAddOnMethod (AddBuilder);
4063 EventBuilder.SetRemoveOnMethod (RemoveBuilder);
4065 if (!TypeManager.RegisterEvent (EventBuilder, AddBuilder, RemoveBuilder)) {
4066 Report.Error (111, Location,
4067 "Class `" + parent.Name +
4068 "' already contains a definition for the event `" +
4077 void EmitDefaultMethod (EmitContext ec, bool is_add)
4079 ILGenerator ig = ec.ig;
4080 MethodInfo method = null;
4083 method = TypeManager.delegate_combine_delegate_delegate;
4085 method = TypeManager.delegate_remove_delegate_delegate;
4087 if ((ModFlags & Modifiers.STATIC) != 0) {
4088 ig.Emit (OpCodes.Ldsfld, (FieldInfo) FieldBuilder);
4089 ig.Emit (OpCodes.Ldarg_0);
4090 ig.Emit (OpCodes.Call, method);
4091 ig.Emit (OpCodes.Castclass, MemberType);
4092 ig.Emit (OpCodes.Stsfld, (FieldInfo) FieldBuilder);
4094 ig.Emit (OpCodes.Ldarg_0);
4095 ig.Emit (OpCodes.Ldarg_0);
4096 ig.Emit (OpCodes.Ldfld, (FieldInfo) FieldBuilder);
4097 ig.Emit (OpCodes.Ldarg_1);
4098 ig.Emit (OpCodes.Call, method);
4099 ig.Emit (OpCodes.Castclass, MemberType);
4100 ig.Emit (OpCodes.Stfld, (FieldInfo) FieldBuilder);
4102 ig.Emit (OpCodes.Ret);
4105 public void Emit (TypeContainer tc)
4109 ec = new EmitContext (tc, Location, null, MemberType, ModFlags);
4110 Attribute.ApplyAttributes (ec, EventBuilder, this, OptAttributes, Location);
4113 AddData.Emit (tc, Add.Block, Add);
4115 ILGenerator ig = AddData.MethodBuilder.GetILGenerator ();
4116 ec = new EmitContext (tc, Location, ig, TypeManager.void_type, ModFlags);
4117 EmitDefaultMethod (ec, true);
4121 RemoveData.Emit (tc, Remove.Block, Remove);
4123 ILGenerator ig = RemoveData.MethodBuilder.GetILGenerator ();
4124 ec = new EmitContext (tc, Location, ig, TypeManager.void_type, ModFlags);
4125 EmitDefaultMethod (ec, false);
4132 // FIXME: This does not handle:
4134 // int INTERFACENAME [ args ]
4139 // int this [ args ]
4141 public class Indexer : PropertyBase {
4143 const int AllowedModifiers =
4146 Modifiers.PROTECTED |
4147 Modifiers.INTERNAL |
4151 Modifiers.OVERRIDE |
4156 public string IndexerName;
4157 public string InterfaceIndexerName;
4160 // Are we implementing an interface ?
4162 bool IsImplementing = false;
4164 public Indexer (Expression type, string int_type, int flags, Parameters parameters,
4165 Accessor get_block, Accessor set_block, Attributes attrs, Location loc)
4166 : base (type, "", flags, AllowedModifiers, parameters, get_block, set_block,
4169 ExplicitInterfaceName = int_type;
4172 public override bool Define (TypeContainer parent)
4174 PropertyAttributes prop_attr =
4175 PropertyAttributes.RTSpecialName |
4176 PropertyAttributes.SpecialName;
4178 if (!DoDefine (parent))
4181 IndexerName = Attribute.ScanForIndexerName (ec, OptAttributes);
4182 if (IndexerName == null)
4183 IndexerName = "Item";
4184 else if (IsExplicitImpl)
4185 Report.Error (592, Location,
4186 "Attribute 'IndexerName' is not valid on this declaration " +
4187 "type. It is valid on `property' declarations only.");
4189 ShortName = IndexerName;
4190 if (IsExplicitImpl) {
4191 InterfaceIndexerName = TypeManager.IndexerPropertyName (InterfaceType);
4192 Name = InterfaceType.FullName + "." + IndexerName;
4194 InterfaceIndexerName = IndexerName;
4198 if (!CheckBase (parent))
4202 InternalParameters ip = new InternalParameters (parent, Parameters);
4204 GetData = new MethodData (this, "get", MemberType,
4205 ParameterTypes, ip, CallingConventions.Standard,
4206 Get.OptAttributes, ModFlags, flags, false);
4208 if (!GetData.Define (parent))
4211 GetBuilder = GetData.MethodBuilder;
4215 int top = ParameterTypes.Length;
4216 Type [] set_pars = new Type [top + 1];
4217 ParameterTypes.CopyTo (set_pars, 0);
4218 set_pars [top] = MemberType;
4220 Parameter [] fixed_parms = Parameters.FixedParameters;
4222 if (fixed_parms == null){
4223 throw new Exception ("We currently do not support only array arguments in an indexer");
4224 // BUG BUG BUG BUG BUG BUG BUG BUG BUG BUG
4225 // BUG BUG BUG BUG BUG BUG BUG BUG BUG BUG
4227 // Here is the problem: the `value' parameter has
4228 // to come *after* the array parameter in the declaration
4230 // X (object [] x, Type value)
4233 // BUG BUG BUG BUG BUG BUG BUG BUG BUG BUG
4234 // BUG BUG BUG BUG BUG BUG BUG BUG BUG BUG
4238 Parameter [] tmp = new Parameter [fixed_parms.Length + 1];
4241 fixed_parms.CopyTo (tmp, 0);
4242 tmp [fixed_parms.Length] = new Parameter (
4243 Type, /* was "value" */ this.Name, Parameter.Modifier.NONE, null);
4245 Parameters set_formal_params = new Parameters (tmp, null, Location);
4247 InternalParameters ip = new InternalParameters (parent, set_formal_params);
4249 SetData = new MethodData (this, "set", TypeManager.void_type,
4250 set_pars, ip, CallingConventions.Standard,
4251 Set.OptAttributes, ModFlags, flags, false);
4253 if (!SetData.Define (parent))
4256 SetBuilder = SetData.MethodBuilder;
4260 // Now name the parameters
4262 Parameter [] p = Parameters.FixedParameters;
4266 for (i = 0; i < p.Length; ++i) {
4268 GetBuilder.DefineParameter (
4269 i + 1, p [i].Attributes, p [i].Name);
4272 SetBuilder.DefineParameter (
4273 i + 1, p [i].Attributes, p [i].Name);
4278 SetBuilder.DefineParameter (
4279 i + 1, ParameterAttributes.None, /* was "value" */ this.Name);
4281 if (i != ParameterTypes.Length) {
4282 Parameter array_param = Parameters.ArrayParameter;
4283 SetBuilder.DefineParameter (
4284 i + 1, array_param.Attributes, array_param.Name);
4288 if (GetData != null)
4289 IsImplementing = GetData.IsImplementing;
4290 else if (SetData != null)
4291 IsImplementing = SetData.IsImplementing;
4294 // Define the PropertyBuilder if one of the following conditions are met:
4295 // a) we're not implementing an interface indexer.
4296 // b) the indexer has a different IndexerName and this is no
4297 // explicit interface implementation.
4299 if (!IsExplicitImpl) {
4300 PropertyBuilder = parent.TypeBuilder.DefineProperty (
4301 IndexerName, prop_attr, MemberType, ParameterTypes);
4303 if (GetData != null)
4304 PropertyBuilder.SetGetMethod (GetBuilder);
4306 if (SetData != null)
4307 PropertyBuilder.SetSetMethod (SetBuilder);
4309 TypeManager.RegisterIndexer (PropertyBuilder, GetBuilder, SetBuilder,
4317 public class Operator : MemberCore {
4319 const int AllowedModifiers =
4325 const int RequiredModifiers =
4329 public enum OpType : byte {
4339 // Unary and Binary operators
4362 // Implicit and Explicit
4367 public readonly OpType OperatorType;
4368 public readonly Expression ReturnType;
4369 public readonly Expression FirstArgType, SecondArgType;
4370 public readonly string FirstArgName, SecondArgName;
4371 public readonly Block Block;
4372 public Attributes OptAttributes;
4373 public MethodBuilder OperatorMethodBuilder;
4375 public string MethodName;
4376 public Method OperatorMethod;
4378 public Operator (OpType type, Expression ret_type, int flags,
4379 Expression arg1type, string arg1name,
4380 Expression arg2type, string arg2name,
4381 Block block, Attributes attrs, Location loc)
4384 OperatorType = type;
4385 ReturnType = ret_type;
4386 ModFlags = Modifiers.Check (AllowedModifiers, flags, Modifiers.PUBLIC, loc);
4387 FirstArgType = arg1type;
4388 FirstArgName = arg1name;
4389 SecondArgType = arg2type;
4390 SecondArgName = arg2name;
4392 OptAttributes = attrs;
4395 string Prototype (TypeContainer parent)
4397 return parent.Name + ".operator " + OperatorType + " (" + FirstArgType + "," +
4398 SecondArgType + ")";
4401 public override bool Define (TypeContainer parent)
4404 MethodName = "op_" + OperatorType;
4406 if (SecondArgType != null)
4409 Parameter [] param_list = new Parameter [length];
4411 if ((ModFlags & RequiredModifiers) != RequiredModifiers){
4414 "User defined operators `" +
4415 Prototype (parent) +
4416 "' must be declared static and public");
4420 param_list[0] = new Parameter (FirstArgType, FirstArgName,
4421 Parameter.Modifier.NONE, null);
4422 if (SecondArgType != null)
4423 param_list[1] = new Parameter (SecondArgType, SecondArgName,
4424 Parameter.Modifier.NONE, null);
4426 OperatorMethod = new Method (ReturnType, ModFlags, MethodName,
4427 new Parameters (param_list, null, Location),
4428 OptAttributes, Mono.CSharp.Location.Null);
4430 OperatorMethod.IsOperator = true;
4431 OperatorMethod.Define (parent);
4433 if (OperatorMethod.MethodBuilder == null)
4436 OperatorMethodBuilder = OperatorMethod.MethodBuilder;
4438 Type [] param_types = OperatorMethod.ParameterTypes;
4439 Type declaring_type = OperatorMethodBuilder.DeclaringType;
4440 Type return_type = OperatorMethod.GetReturnType ();
4441 Type first_arg_type = param_types [0];
4443 // Rules for conversion operators
4445 if (OperatorType == OpType.Implicit || OperatorType == OpType.Explicit) {
4446 if (first_arg_type == return_type && first_arg_type == declaring_type){
4449 "User-defined conversion cannot take an object of the " +
4450 "enclosing type and convert to an object of the enclosing" +
4455 if (first_arg_type != declaring_type && return_type != declaring_type){
4458 "User-defined conversion must convert to or from the " +
4463 if (first_arg_type == TypeManager.object_type ||
4464 return_type == TypeManager.object_type){
4467 "User-defined conversion cannot convert to or from " +
4472 if (first_arg_type.IsInterface || return_type.IsInterface){
4475 "User-defined conversion cannot convert to or from an " +
4480 if (first_arg_type.IsSubclassOf (return_type) ||
4481 return_type.IsSubclassOf (first_arg_type)){
4484 "User-defined conversion cannot convert between types " +
4485 "that derive from each other");
4488 } else if (SecondArgType == null) {
4489 // Checks for Unary operators
4491 if (first_arg_type != declaring_type){
4494 "The parameter of a unary operator must be the " +
4499 if (OperatorType == OpType.Increment || OperatorType == OpType.Decrement) {
4500 if (return_type != declaring_type){
4503 "The parameter and return type for ++ and -- " +
4504 "must be the containing type");
4510 if (OperatorType == OpType.True || OperatorType == OpType.False) {
4511 if (return_type != TypeManager.bool_type){
4514 "The return type of operator True or False " +
4521 // Checks for Binary operators
4523 if (first_arg_type != declaring_type &&
4524 param_types [1] != declaring_type){
4527 "One of the parameters of a binary operator must " +
4528 "be the containing type");
4536 public void Emit (TypeContainer parent)
4538 EmitContext ec = new EmitContext (parent, Location, null, null, ModFlags);
4539 Attribute.ApplyAttributes (ec, OperatorMethodBuilder, this, OptAttributes, Location);
4542 // abstract or extern methods have no bodies
4544 if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
4547 OperatorMethod.Block = Block;
4548 OperatorMethod.Emit (parent);
4551 public static string GetName (OpType ot)
4554 case OpType.LogicalNot:
4556 case OpType.OnesComplement:
4558 case OpType.Increment:
4560 case OpType.Decrement:
4566 case OpType.Addition:
4568 case OpType.Subtraction:
4570 case OpType.UnaryPlus:
4572 case OpType.UnaryNegation:
4574 case OpType.Multiply:
4576 case OpType.Division:
4578 case OpType.Modulus:
4580 case OpType.BitwiseAnd:
4582 case OpType.BitwiseOr:
4584 case OpType.ExclusiveOr:
4586 case OpType.LeftShift:
4588 case OpType.RightShift:
4590 case OpType.Equality:
4592 case OpType.Inequality:
4594 case OpType.GreaterThan:
4596 case OpType.LessThan:
4598 case OpType.GreaterThanOrEqual:
4600 case OpType.LessThanOrEqual:
4602 case OpType.Implicit:
4604 case OpType.Explicit:
4610 public override string ToString ()
4612 Type return_type = OperatorMethod.GetReturnType();
4613 Type [] param_types = OperatorMethod.ParameterTypes;
4615 if (SecondArgType == null)
4616 return String.Format (
4617 "{0} operator {1}({2})",
4618 TypeManager.CSharpName (return_type),
4619 GetName (OperatorType),
4622 return String.Format (
4623 "{0} operator {1}({2}, {3})",
4624 TypeManager.CSharpName (return_type),
4625 GetName (OperatorType),
4626 param_types [0], param_types [1]);
4631 // This is used to compare method signatures
4633 struct MethodSignature {
4635 public Type RetType;
4636 public Type [] Parameters;
4639 /// This delegate is used to extract methods which have the
4640 /// same signature as the argument
4642 public static MemberFilter method_signature_filter;
4645 /// This delegate is used to extract inheritable methods which
4646 /// have the same signature as the argument. By inheritable,
4647 /// this means that we have permissions to override the method
4648 /// from the current assembly and class
4650 public static MemberFilter inheritable_method_signature_filter;
4653 /// This delegate is used to extract inheritable methods which
4654 /// have the same signature as the argument. By inheritable,
4655 /// this means that we have permissions to override the method
4656 /// from the current assembly and class
4658 public static MemberFilter inheritable_property_signature_filter;
4660 static MethodSignature ()
4662 method_signature_filter = new MemberFilter (MemberSignatureCompare);
4663 inheritable_method_signature_filter = new MemberFilter (
4664 InheritableMemberSignatureCompare);
4665 inheritable_property_signature_filter = new MemberFilter (
4666 InheritablePropertySignatureCompare);
4669 public MethodSignature (string name, Type ret_type, Type [] parameters)
4674 if (parameters == null)
4675 Parameters = TypeManager.NoTypes;
4677 Parameters = parameters;
4680 public override int GetHashCode ()
4682 return Name.GetHashCode ();
4685 public override bool Equals (Object o)
4687 MethodSignature other = (MethodSignature) o;
4689 if (other.Name != Name)
4692 if (other.RetType != RetType)
4695 if (Parameters == null){
4696 if (other.Parameters == null)
4701 if (other.Parameters == null)
4704 int c = Parameters.Length;
4705 if (other.Parameters.Length != c)
4708 for (int i = 0; i < c; i++)
4709 if (other.Parameters [i] != Parameters [i])
4715 static bool MemberSignatureCompare (MemberInfo m, object filter_criteria)
4717 MethodSignature sig = (MethodSignature) filter_criteria;
4719 if (m.Name != sig.Name)
4723 MethodInfo mi = m as MethodInfo;
4724 PropertyInfo pi = m as PropertyInfo;
4727 ReturnType = mi.ReturnType;
4728 else if (pi != null)
4729 ReturnType = pi.PropertyType;
4734 // we use sig.RetType == null to mean `do not check the
4735 // method return value.
4737 if (sig.RetType != null)
4738 if (ReturnType != sig.RetType)
4743 args = TypeManager.GetArgumentTypes (mi);
4745 args = TypeManager.GetArgumentTypes (pi);
4746 Type [] sigp = sig.Parameters;
4748 if (args.Length != sigp.Length)
4751 for (int i = args.Length; i > 0; ){
4753 if (args [i] != sigp [i])
4760 // This filter should be used when we are requesting methods that
4761 // we want to override.
4763 // This makes a number of assumptions, for example
4764 // that the methods being extracted are of a parent
4765 // class (this means we know implicitly that we are
4766 // being called to find out about members by a derived
4769 static bool InheritableMemberSignatureCompare (MemberInfo m, object filter_criteria)
4771 if (MemberSignatureCompare (m, filter_criteria)){
4772 MethodInfo mi = (MethodInfo) m;
4773 MethodAttributes prot = mi.Attributes & MethodAttributes.MemberAccessMask;
4775 // If only accessible to the current class.
4776 if (prot == MethodAttributes.Private)
4779 // If only accessible to the defining assembly or
4780 if (prot == MethodAttributes.FamANDAssem ||
4781 prot == MethodAttributes.Assembly){
4782 if (m.DeclaringType.Assembly == CodeGen.AssemblyBuilder)
4788 // Anything else (FamOrAssembly and Public) is fine
4795 // This filter should be used when we are requesting properties that
4796 // we want to override.
4798 // This makes a number of assumptions, for example
4799 // that the methods being extracted are of a parent
4800 // class (this means we know implicitly that we are
4801 // being called to find out about members by a derived
4804 static bool InheritablePropertySignatureCompare (MemberInfo m, object filter_criteria)
4806 if (MemberSignatureCompare (m, filter_criteria)){
4807 PropertyInfo pi = (PropertyInfo) m;
4809 MethodInfo inherited_get = TypeManager.GetPropertyGetter (pi);
4810 MethodInfo inherited_set = TypeManager.GetPropertySetter (pi);
4812 MethodInfo mi = inherited_get == null ? inherited_set : inherited_get;
4814 MethodAttributes prot = mi.Attributes & MethodAttributes.MemberAccessMask;
4816 // If only accessible to the current class.
4817 if (prot == MethodAttributes.Private)
4820 // If only accessible to the defining assembly or
4821 if (prot == MethodAttributes.FamANDAssem ||
4822 prot == MethodAttributes.Assembly){
4823 if (m.DeclaringType.Assembly == CodeGen.AssemblyBuilder)
4829 // Anything else (FamOrAssembly and Public) is fine