2004-08-04 Anirban Bhattacharjee <banirban@novell.com>
[mono.git] / mcs / mbas / class.cs
index 92a2c2a6ea04a186623247bb92bc1c5d6cdcdd92..8f9d087943a167c1618203060aa6f4a290025b81 100644 (file)
@@ -4,12 +4,32 @@
 //
 // Authors: Miguel de Icaza (miguel@gnu.org)
 //          Martin Baulig (martin@gnome.org)
+//                     Anirban Bhattacharjee (banirban@novell.com)
 //
 // Licensed under the terms of the GNU GPL
 //
 // (C) 2001, 2002 Ximian, Inc (http://www.ximian.com)
 //
 //
+//  2002-10-11  Miguel de Icaza  <miguel@ximian.com>
+//
+//     * class.cs: Following the comment from 2002-09-26 to AddMethod, I
+//     have fixed a remaining problem: not every AddXXXX was adding a
+//     fully qualified name.  
+//
+//     Now everyone registers a fully qualified name in the DeclSpace as
+//     being defined instead of the partial name.  
+//
+//     Downsides: we are slower than we need to be due to the excess
+//     copies and the names being registered this way.  
+//
+//     The reason for this is that we currently depend (on the corlib
+//     bootstrap for instance) that types are fully qualified, because
+//     we dump all the types in the namespace, and we should really have
+//     types inserted into the proper namespace, so we can only store the
+//     basenames in the defined_names array.
+//
+//
 #define CACHE
 using System;
 using System.Collections;
@@ -18,7 +38,7 @@ using System.Reflection.Emit;
 using System.Runtime.CompilerServices;
 using System.Diagnostics.SymbolStore;
 
-namespace Mono.CSharp {
+namespace Mono.MonoBASIC {
 
        /// <summary>
        ///   This is the base class for structs and classes.  
@@ -69,9 +89,12 @@ namespace Mono.CSharp {
                // Holds the operators
                ArrayList operators;
 
+               // Holds AddHandlers stements for events
+               ArrayList handlers;
+
                // The emit context for toplevel objects.
                EmitContext ec;
-               
+
                //
                // Pointers to the default constructor and the default static constructor
                //
@@ -136,33 +159,32 @@ namespace Mono.CSharp {
                public AdditionResult AddConstant (Const constant)
                {
                        AdditionResult res;
-                       string name = constant.Name;
+                       string basename = constant.Name;
 
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       if ((res = IsValid (basename)) != AdditionResult.Success)
                                return res;
                        
                        if (constants == null)
                                constants = new ArrayList ();
 
                        constants.Add (constant);
-                       DefineName (name, constant);
+                       DefineName (Name + "." + basename, constant);
 
                        return AdditionResult.Success;
                }
 
-               public AdditionResult AddEnum (Mono.CSharp.Enum e)
+               public AdditionResult AddEnum (Mono.MonoBASIC.Enum e)
                {
                        AdditionResult res;
-                       string name = e.Name;
 
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       if ((res = IsValid (e.Basename)) != AdditionResult.Success)
                                return res;
 
                        if (enums == null)
                                enums = new ArrayList ();
 
                        enums.Add (e);
-                       DefineName (name, e);
+                       DefineName (e.Name, e);
 
                        return AdditionResult.Success;
                }
@@ -170,27 +192,38 @@ namespace Mono.CSharp {
                public AdditionResult AddClass (Class c)
                {
                        AdditionResult res;
-                       string name = c.Name;
-
-
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       
+                       if ((res = IsValid (c.Basename)) != AdditionResult.Success)
                                return res;
-
-                       DefineName (name, c);
+                               
+       
+                                       
+                       DefineName (c.Name, c);
                        types.Add (c);
-
+                       
+                       // FIXME: Do we really need to explicitly add an empty default static constructor?
+                       // Apparently we don't
+/*                     if (c.default_static_constructor == null) 
+                       {
+                               bool isModule = c is Mono.MonoBASIC.Module;
+                               Constructor dc = new Constructor ("New", Parameters.EmptyReadOnlyParameters, null, c.Location);
+                               dc.ModFlags = isModule ? Modifiers.PUBLIC | Modifiers.STATIC : Modifiers.PUBLIC;                                
+                               c.AddConstructor (dc);          
+                       } 
+*/
+                       //--------------------------------------------------------------                                
+                               
                        return AdditionResult.Success;
                }
 
                public AdditionResult AddStruct (Struct s)
                {
                        AdditionResult res;
-                       string name = s.Name;
                        
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       if ((res = IsValid (s.Basename)) != AdditionResult.Success)
                                return res;
 
-                       DefineName (name, s);
+                       DefineName (s.Name, s);
                        types.Add (s);
 
                        return AdditionResult.Success;
@@ -199,15 +232,14 @@ namespace Mono.CSharp {
                public AdditionResult AddDelegate (Delegate d)
                {
                        AdditionResult res;
-                       string name = d.Name;
 
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       if ((res = IsValid (d.Basename)) != AdditionResult.Success)
                                return res;
 
                        if (delegates == null)
                                delegates = new ArrayList ();
                        
-                       DefineName (name, d);
+                       DefineName (d.Name, d);
                        delegates.Add (d);
 
                        return AdditionResult.Success;
@@ -215,15 +247,17 @@ namespace Mono.CSharp {
 
                public AdditionResult AddMethod (Method method)
                {
-                       string name = method.Name;
-                       Object value = defined_names [name];
-                       
+                       string basename = method.Name;
+                       string fullname = Name + "." + basename;
+
+                       Object value = defined_names [fullname];
+
                        if (value != null && (!(value is Method)))
                                return AdditionResult.NameExists;
 
-                       if (name == Basename)
+                       if (basename == Basename)
                                return AdditionResult.EnclosingClash;
-
+                       
                        if (methods == null)
                                methods = new ArrayList ();
 
@@ -232,19 +266,19 @@ namespace Mono.CSharp {
                        else 
                                methods.Add (method);
                        
-                       if (value != null)
-                               DefineName (name, method);
+                       if (value == null)
+                               DefineName (fullname, method);
 
                        return AdditionResult.Success;
                }
 
                public AdditionResult AddConstructor (Constructor c)
                {
-                       if (c.Name != Basename
+                       if (c.Name != "New"
                                return AdditionResult.NotAConstructor;
 
                        bool is_static = (c.ModFlags & Modifiers.STATIC) != 0;
-                       
+
                        if (is_static){
                                have_static_constructor = true;
                                if (default_static_constructor != null){
@@ -256,8 +290,8 @@ namespace Mono.CSharp {
                                default_static_constructor = c;
                        } else {
                                if (c.IsDefault ()){
-                                       if (default_constructor != null)
-                                               return AdditionResult.MethodExists;
+                                       /*if (default_constructor != null)
+                                               return AdditionResult.MethodExists;*/
                                        default_constructor = c;
                                }
                                
@@ -273,15 +307,14 @@ namespace Mono.CSharp {
                public AdditionResult AddInterface (Interface iface)
                {
                        AdditionResult res;
-                       string name = iface.Name;
 
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       if ((res = IsValid (iface.Basename)) != AdditionResult.Success)
                                return res;
                        
                        if (interfaces == null)
                                interfaces = new ArrayList ();
                        interfaces.Add (iface);
-                       DefineName (name, iface);
+                       DefineName (iface.Name, iface);
                        
                        return AdditionResult.Success;
                }
@@ -289,9 +322,9 @@ namespace Mono.CSharp {
                public AdditionResult AddField (Field field)
                {
                        AdditionResult res;
-                       string name = field.Name;
+                       string basename = field.Name;
 
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       if ((res = IsValid (basename)) != AdditionResult.Success)
                                return res;
                        
                        if (fields == null)
@@ -299,8 +332,8 @@ namespace Mono.CSharp {
                        
                        fields.Add (field);
                        
-                       if (field.HasInitializer){
-                               if ((field.ModFlags & Modifiers.STATIC) != 0){
+                       if (field.HasInitializer){      
+                               if ((field.ModFlags & Modifiers.STATIC) != 0) {
                                        if (initialized_static_fields == null)
                                                initialized_static_fields = new ArrayList ();
 
@@ -322,16 +355,16 @@ namespace Mono.CSharp {
                        if ((field.ModFlags & Modifiers.STATIC) == 0)
                                have_nonstatic_fields = true;
 
-                       DefineName (name, field);
+                       DefineName (Name + "." + basename, field);
                        return AdditionResult.Success;
                }
 
                public AdditionResult AddProperty (Property prop)
                {
                        AdditionResult res;
-                       string name = prop.Name;
+                       string basename = prop.Name;
 
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       if ((res = IsValid (basename)) != AdditionResult.Success)
                                return res;
 
                        if (properties == null)
@@ -341,7 +374,7 @@ namespace Mono.CSharp {
                                properties.Insert (0, prop);
                        else
                                properties.Add (prop);
-                       DefineName (name, prop);
+                       DefineName (Name + "." + basename, prop);
 
                        return AdditionResult.Success;
                }
@@ -349,16 +382,16 @@ namespace Mono.CSharp {
                public AdditionResult AddEvent (Event e)
                {
                        AdditionResult res;
-                       string name = e.Name;
+                       string basename = e.Name;
 
-                       if ((res = IsValid (name)) != AdditionResult.Success)
+                       if ((res = IsValid (basename)) != AdditionResult.Success)
                                return res;
 
                        if (events == null)
                                events = new ArrayList ();
                        
                        events.Add (e);
-                       DefineName (name, e);
+                       DefineName (Name + "." + basename, e);
 
                        return AdditionResult.Success;
                }
@@ -386,6 +419,15 @@ namespace Mono.CSharp {
                        return AdditionResult.Success;
                }
 
+               public AdditionResult AddEventHandler (Statement stmt)
+               {
+                       if (handlers == null)
+                               handlers = new ArrayList ();
+
+                       handlers.Add (stmt);
+                       return AdditionResult.Success;
+               }
+
                public void RegisterOrder (Interface iface)
                {
                        if (interface_order == null)
@@ -504,6 +546,12 @@ namespace Mono.CSharp {
                        }
                }
 
+               public ArrayList EventHandlers {
+                       get {
+                               return handlers;
+                       }
+               }
+
                //
                // Emits the instance field initializers
                //
@@ -556,16 +604,18 @@ namespace Mono.CSharp {
                        Constructor c;
                        int mods = 0;
 
-                       c = new Constructor (Basename, Parameters.EmptyReadOnlyParameters,
-                                            new ConstructorBaseInitializer (
-                                                    null, Parameters.EmptyReadOnlyParameters,
-                                                    Location.Null),
+                       c = new Constructor ("New", Parameters.EmptyReadOnlyParameters,
+                                            null,
                                             Location.Null);
                        
-                       if (is_static)
+                       if (is_static) {
                                mods = Modifiers.STATIC;
-
-                       c.ModFlags = mods;
+                               c.ModFlags = mods;
+                       }
+                       else 
+                               c.Initializer = new ConstructorBaseInitializer (
+                                       null, Parameters.EmptyReadOnlyParameters,
+                                       Location.Null);
 
                        AddConstructor (c);
                        
@@ -579,7 +629,7 @@ namespace Mono.CSharp {
                        
                        foreach (Field f in initialized_fields){
                                Report.Error (
-                                       573, Location,
+                                       31049, Location,
                                        "`" + n + "." + f.Name + "': can not have " +
                                        "instance field initializers in structs");
                        }
@@ -656,10 +706,15 @@ namespace Mono.CSharp {
                                        start = 0;
                                }
 
+                               if (parent.IsSealed )
+                                       Report.Error (30299, Location,
+                                                               "Class " + Name + " cannot inherit " +
+                                                               "'NotInheritable' class " + TypeManager.MonoBASIC_Name (parent));
+                                       
                                if (!AsAccessible (parent, ModFlags))
-                                       Report.Error (60, Location,
+                                       Report.Error (30389, Location,
                                                      "Inconsistent accessibility: base class `" +
-                                                     TypeManager.CSharpName (parent) + "' is less " +
+                                                     TypeManager.MonoBASIC_Name (parent) + "' is less " +
                                                      "accessible than class `" +
                                                      Name + "'");
 
@@ -674,7 +729,7 @@ namespace Mono.CSharp {
                                Expression resolved = ResolveTypeExpr (name, false, Location);
                                bases [i] = resolved;
                                Type t = resolved.Type;
-
+                
                                if (t == null){
                                        error = true;
                                        return null;
@@ -686,24 +741,23 @@ namespace Mono.CSharp {
                                        error = true;
                                        return null;
                                }
-                               
+                       
                                if (t.IsSealed) {
-                                       string detail = "";
-                                       
-                                       if (t.IsValueType)
-                                               detail = " (a class can not inherit from a struct/enum)";
+                                       if (t.IsValueType)\r
+                                               Report.Error (30258, "class `"+ Name +
+                                                       "': a class can not inherit from a struct/enum");
                                                        
-                                       Report.Error (509, "class `"+ Name +
+                                       /*Report.Error (509, "class `"+ Name +
                                                      "': Cannot inherit from sealed class `"+
-                                                     bases [i]+"'"+detail);
+                                                     bases [i]);*/
                                        error = true;
                                        return null;
                                }
 
                                if (t.IsClass) {
                                        if (parent != null){
-                                               Report.Error (527, "In Class `" + Name + "', type `"+
-                                                             name+"' is not an interface");
+                                               Report.Error (30121, Name + ": A class cannot inherit " +
+                                                       "more than one class");
                                                error = true;
                                                return null;
                                        }
@@ -745,13 +799,22 @@ namespace Mono.CSharp {
                        else
                                is_class = false;
 
-                       ec = new EmitContext (this, Mono.CSharp.Location.Null, null, null, ModFlags);
+                       ec = new EmitContext (this, Mono.MonoBASIC.Location.Null, null, null, ModFlags);
 
+                       if (((ModFlags & Modifiers.ABSTRACT ) != 0) && 
+                                               ((ModFlags & Modifiers.SEALED) != 0)){
+                               Report.Error (31408, Location,
+                                       "Class declared as 'MustInherit' cannot be declared as 'NotInheritable'");
+                       }
+                       
                        ifaces = GetClassBases (is_class, out parent, out error); 
                        
                        if (error)
                                return null;
 
+                       if (this is Interface)
+                               parent = null;
+
                        if (is_class && parent != null){
                                if (parent == TypeManager.enum_type ||
                                    (parent == TypeManager.value_type && RootContext.StdLib) ||
@@ -759,7 +822,7 @@ namespace Mono.CSharp {
                                    parent == TypeManager.array_type){
                                        Report.Error (
                                                644, Location, "`" + Name + "' cannot inherit from " +
-                                               "special class `" + TypeManager.CSharpName (parent) + "'");
+                                               "special class `" + TypeManager.MonoBASIC_Name (parent) + "'");
                                        return null;
                                }
                        }
@@ -767,58 +830,60 @@ namespace Mono.CSharp {
                        if (!is_class && TypeManager.value_type == null)
                                throw new Exception ();
 
+                       if (is_class  && Parent.Parent == null && (!(this is Interface))) \r
+                       {
+                               if ((ModFlags & Modifiers.PRIVATE) != 0)
+                                       Report.Error (31089, Location,
+                                               "Only internal classes can be declared as 'Private'");
+
+                               if ((ModFlags & Modifiers.PROTECTED) != 0)
+                                       Report.Error (31047, Location,
+                                               "Only internal classes can be declared as 'Protected'");
+                       }
+
+                       if ((Parent is Module) && ((ModFlags & Modifiers.PROTECTED) != 0))
+                               Report.Error (30735, Location,
+                                       "'Type' inside a 'Module' can not be " +
+                                       "declared as 'Protected'");
+
+                       if ((Parent is Struct) && ((ModFlags & Modifiers.PROTECTED) != 0))
+                               Report.Error (30435, Location,
+                                       "'Type' inside a 'Structure' can not be " +
+                                       "declared as 'Protected'");
+                       
                        TypeAttributes type_attributes = TypeAttr;
 
                        // if (parent_builder is ModuleBuilder) {
                        if (IsTopLevel){
                                ModuleBuilder builder = CodeGen.ModuleBuilder;
+                               TypeBuilder = builder.DefineType (
+                                       Name, type_attributes, parent, ifaces);
                                
-                               //
-                               // Structs with no fields need to have a ".size 1"
-                               // appended
-                               //
-
-                               if (!is_class && !have_nonstatic_fields)
-                                       TypeBuilder = builder.DefineType (Name,
-                                                                         type_attributes,
-                                                                         parent, 
-                                                                         PackingSize.Unspecified, 1);
-                               else
-                               //
-                               // classes or structs with fields
-                               //
-                                       TypeBuilder = builder.DefineType (Name,
-                                                                         type_attributes,
-                                                                         parent,
-                                                                         ifaces);
                        } else {
                                TypeBuilder builder = Parent.TypeBuilder;
+                               TypeBuilder = builder.DefineNestedType (
+                                       Basename, type_attributes, parent, ifaces);
+                       }
                                
-                               //
-                               // Structs with no fields need to have a ".size 1"
-                               // appended
-                               //
-                               if (!is_class && !have_nonstatic_fields)
-                                       TypeBuilder = builder.DefineNestedType (Basename,
-                                                                               type_attributes,
-                                                                               parent, 
-                                                                               PackingSize.Unspecified);
-                               else {
-                                       //
-                                       // classes or structs with fields
-                                       //
-                                       TypeBuilder = builder.DefineNestedType (Basename,
-                                                                               type_attributes,
-                                                                               parent,
-                                                                               ifaces);
+                       if (!is_class)
+                       {
+                               // structure must contain atleast one member variable
+                               if(!have_nonstatic_fields){
+                                       Report.Error (
+                                               30281, Location, "Structure `" + Name + "' do not " +
+                                               "contain any member Variable");
+
+                                       /*TypeBuilder.DefineField ("$PRIVATE$", TypeManager.byte_type,
+                                                                FieldAttributes.Private);*/
                                }
-                       }
 
-                       // add interfaces that were not added at type creation (weird API issue)
-                       if (!is_class && !have_nonstatic_fields && (ifaces != null)) {
-                               foreach (Type i in ifaces)
-                                       TypeBuilder.AddInterfaceImplementation (i);
+                               // add interfaces that were not added at type creation (weird API issue)
+                               if (!have_nonstatic_fields && (ifaces != null)) {
+                                       foreach (Type i in ifaces)
+                                               TypeBuilder.AddInterfaceImplementation (i);
+                               }
                        }
+
                        
                        //
                        // Finish the setup for the EmitContext
@@ -870,7 +935,51 @@ namespace Mono.CSharp {
                void DefineMembers (ArrayList list, MemberInfo [] defined_names)
                {
                        int idx;
-                       
+
+                       // if one of the overloaded method is having
+                       // Shadows or Overloads modifier all other should 
+                       // have the same modifier
+                       Hashtable members = new Hashtable();
+                       int modval;
+                       foreach (MemberCore mc in list)\r
+                       {
+                               modval = 0;
+                               if(members[mc.Name] == null)
+                               {
+                                       foreach (MemberCore m in list)
+                                       {
+                                               if(m.Name == mc.Name) 
+                                               {
+                                                       if ((m.ModFlags & Modifiers.SHADOWS) != 0)
+                                                       {
+                                                               modval = Modifiers.SHADOWS;
+                                                               break;
+                                                       }
+                                                       else if((m.ModFlags & Modifiers.NEW) != 0)
+                                                       {
+                                                               modval = Modifiers.NEW;
+                                                       }
+                                               }
+                                       }
+                                       members.Add(mc.Name, modval);
+                               }
+                               
+                               modval = (int)members[mc.Name];
+                               if(modval != 0)
+                               {
+                                       if(((modval & Modifiers.SHADOWS) != 0) && ((mc.ModFlags & Modifiers.SHADOWS) == 0))
+                                               Report.Error (
+                                                       30695, mc.Location,
+                                                       "Function '" + mc.Name + "': must be declared 'Shadows' " +
+                                                       "because another '" + mc.Name + "' declared 'Shadows'");
+                                       else if(((modval & Modifiers.NEW) != 0) && ((mc.ModFlags & Modifiers.NEW) == 0))
+                                               Report.Error (
+                                                       31409, mc.Location,
+                                                       "Function '" + mc.Name + "': must be declared 'Overloads' " +
+                                                       "because another '" + mc.Name + "' declared 'Overloads'");
+                               }
+                       }
+                       members.Clear ();
                        remove_list.Clear ();
 
                        foreach (MemberCore mc in list){
@@ -887,6 +996,8 @@ namespace Mono.CSharp {
                                        if (RootContext.WarningLevel >= 4){
                                                if ((mc.ModFlags & Modifiers.NEW) != 0)
                                                        Warning_KewywordNewNotRequired (mc.Location, mc);
+                                               if ((mc.ModFlags & Modifiers.SHADOWS) != 0)
+                                                       Warning_KewywordShadowsNotRequired (mc.Location, mc);
                                        }
                                        continue;
                                }
@@ -902,8 +1013,9 @@ namespace Mono.CSharp {
                                if (match is MethodBase && mc is MethodCore)
                                        continue; 
                                
-                               if ((mc.ModFlags & Modifiers.NEW) == 0)
-                                       Warning_KeywordNewRequired (mc.Location, defined_names [idx]);
+                               if (((mc.ModFlags & Modifiers.SHADOWS) == 0) && idx > 0)
+                                       Warning_KeywordShadowsRequired (mc.Location, defined_names [idx]);
+                               
                        }
                        
                        foreach (object o in remove_list)
@@ -952,7 +1064,7 @@ namespace Mono.CSharp {
                        IndexerName = class_indexer_name;
                }
 
-               static void Report1530 (Location loc)
+               static void Error_KeywordNotAllowed (Location loc)
                {
                        Report.Error (1530, loc, "Keyword new not allowed for namespace elements");
                }
@@ -969,7 +1081,7 @@ namespace Mono.CSharp {
                                        if ((iface.ModFlags & Modifiers.NEW) == 0)
                                                iface.DefineMembers (this);
                                        else
-                                               Report1530 (iface.Location);
+                                               Error_KeywordNotAllowed (iface.Location);
                        }
 
                        if (RootContext.WarningLevel > 1){
@@ -996,9 +1108,9 @@ namespace Mono.CSharp {
                        if (fields != null)
                                DefineMembers (fields, defined_names);
 
-                       if (this is Class){
+                       if (this is Class && (!(this is Interface))){
                                if (instance_constructors == null){
-                                       if (default_constructor == null)
+                                       if (default_constructor == null) \r
                                                DefineDefaultConstructor (false);
                                }
 
@@ -1025,7 +1137,7 @@ namespace Mono.CSharp {
                        //
                        // Constructors are not in the defined_names array
                        //
-                       if (instance_constructors != null)
+                       if (instance_constructors != null)\r
                                DefineMembers (instance_constructors, null);
                
                        if (default_static_constructor != null)
@@ -1045,9 +1157,12 @@ namespace Mono.CSharp {
                        } else
                                IndexerName = "Item";
 
-                       if (operators != null)
+                       if (operators != null){
                                DefineMembers (operators, null);
 
+                               CheckPairedOperators ();
+                       }
+
                        if (enums != null)
                                DefineMembers (enums, defined_names);
                        
@@ -1271,6 +1386,7 @@ namespace Mono.CSharp {
                                                        continue;
 
                                                MemberInfo pb = p.PropertyBuilder;
+
                                                if (pb != null && filter (pb, criteria) == true) {
                                                        members.Add (p.PropertyBuilder);
                                                }
@@ -1436,9 +1552,9 @@ namespace Mono.CSharp {
                                foreach (Indexer ix in indexers)
                                        ix.Emit (this);
                                
-                               CustomAttributeBuilder cb = Interface.EmitDefaultMemberAttr (
+                               /*CustomAttributeBuilder cb = Interface.EmitDefaultMemberAttr (
                                        this, IndexerName, ModFlags, Location);
-                               TypeBuilder.SetCustomAttribute (cb);
+                               TypeBuilder.SetCustomAttribute (cb);*/
                        }
                        
                        if (fields != null)
@@ -1531,7 +1647,7 @@ namespace Mono.CSharp {
 
                        if (Delegates != null)
                                foreach (Delegate d in Delegates)
-                                       d.CloseDelegate ();
+                                       d.CloseType ();
                }
 
                public string MakeName (string n)
@@ -1539,14 +1655,21 @@ namespace Mono.CSharp {
                        return "`" + Name + "." + n + "'";
                }
 
-               public void Warning_KeywordNewRequired (Location l, MemberInfo mi)
+               public void Warning_KeywordShadowsRequired (Location l, MemberInfo mi)
                {
                        Report.Warning (
-                               108, l, "The keyword new is required on " + 
-                               MakeName (mi.Name) + " because it hides `" +
+                               108, l, "The keyword 'Shadows' is required on " + 
+                               MakeName (mi.Name) + " because it shadows `" +
                                mi.ReflectedType.Name + "." + mi.Name + "'");
                }
 
+               public void Warning_KewywordShadowsNotRequired (Location l, MemberCore mc)
+               {
+                       Report.Warning (
+                               109, l, "The member " + MakeName (mc.Name) + " does not hide an " +
+                               "inherited member, the keyword shadows is not required");
+               }
+
                public void Warning_KewywordNewNotRequired (Location l, MemberCore mc)
                {
                        Report.Warning (
@@ -1567,7 +1690,7 @@ namespace Mono.CSharp {
                {
                        const int vao = (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE);
                        const int va = (Modifiers.VIRTUAL | Modifiers.ABSTRACT);
-                       const int nv = (Modifiers.NEW | Modifiers.VIRTUAL);
+                       const int nv = (Modifiers.SHADOWS | Modifiers.VIRTUAL);
                        bool ok = true;
                        string name = MakeName (n);
                        
@@ -1577,8 +1700,8 @@ namespace Mono.CSharp {
                        if ((flags & Modifiers.STATIC) != 0){
                                if ((flags & vao) != 0){
                                        Report.Error (
-                                               112, loc, "static method " + name + "can not be marked " +
-                                               "as virtual, abstract or override");
+                                               30501, loc, "Shared method " + name + " can not be " +
+                                               "declared as Overridable");
                                        ok = false;
                                }
                        }
@@ -1590,10 +1713,18 @@ namespace Mono.CSharp {
                                }
                        }
 
-                       if ((flags & Modifiers.OVERRIDE) != 0 && (flags & nv) != 0){
+                       if ((flags & Modifiers.OVERRIDE) != 0 && (flags & Modifiers.VIRTUAL) != 0)\r
+                       {
                                Report.Error (
-                                       113, loc, name +
-                                       " marked as override cannot be marked as new or virtual");
+                                       30730, loc, name +
+                                       ": Methods marked as Overrides cannot be made Overridable");
+                               ok = false;
+                       }
+
+                       if ((flags & Modifiers.OVERRIDE) != 0 && (flags & Modifiers.SHADOWS) != 0){
+                               Report.Error (
+                                       31408, loc, name +
+                                       ": Methods marked as Overrides cannot be marked as Shadows");
                                ok = false;
                        }
 
@@ -1614,10 +1745,18 @@ namespace Mono.CSharp {
                                        ok = false;
                                }
 
-                               if ((ModFlags & Modifiers.ABSTRACT) == 0){
+                               if((ModFlags & Modifiers.SEALED) != 0){
+                                       Report.Error (
+                                               30607, loc, 
+                                               "Class declared as 'NotInheritable' " +
+                                               "cannot have a 'MustOverride' member");
+                                       ok = false;
+                               }
+                               else if ((ModFlags & Modifiers.ABSTRACT) == 0){
                                        Report.Error (
-                                               513, loc, name +
-                                               " is abstract but its container class is not");
+                                               31411, loc, name +
+                                               " is declared as 'MustOverride', hence its container " +
+                                               "class should be declared as 'MustInherit'");
                                        ok = false;
 
                                }
@@ -1626,8 +1765,8 @@ namespace Mono.CSharp {
                        if ((flags & Modifiers.PRIVATE) != 0){
                                if ((flags & vao) != 0){
                                        Report.Error (
-                                               621, loc, name +
-                                               " virtual or abstract members can not be private");
+                                               31408, loc, name +
+                                               ": Members marked as Overridable or Overrides can not be Private");
                                        ok = false;
                                }
                        }
@@ -1636,7 +1775,15 @@ namespace Mono.CSharp {
                                if ((flags & Modifiers.OVERRIDE) == 0){
                                        Report.Error (
                                                238, loc, name +
-                                               " cannot be sealed because it is not an override");
+                                               ": cannot be sealed because it is not an override");
+                                       ok = false;
+                               }
+                       }
+                       if ((flags & Modifiers.NEW) != 0){
+                               if ((flags & Modifiers.SHADOWS) != 0){
+                                       Report.Error (
+                                               31408, loc, 
+                                               " 'Overloads' and 'Shadows' cannot be combined ");
                                        ok = false;
                                }
                        }
@@ -1813,7 +1960,7 @@ namespace Mono.CSharp {
 
                bool IMemberContainer.IsInterface {
                        get {
-                               return false;
+                               return this is Interface;
                        }
                }
 
@@ -1821,6 +1968,131 @@ namespace Mono.CSharp {
                {
                        return FindMembers (mt, bf | BindingFlags.DeclaredOnly, null, null);
                }
+
+               //
+               // Operator pair checking
+               //
+
+               class OperatorEntry {
+                       public int flags;
+                       public Type ret_type;
+                       public Type type1, type2;
+                       public Operator op;
+                       public Operator.OpType ot;
+                       
+                       public OperatorEntry (int f, Operator o)
+                       {
+                               flags = f;
+
+                               ret_type = o.OperatorMethod.GetReturnType ();
+                               Type [] pt = o.OperatorMethod.ParameterTypes;
+                               type1 = pt [0];
+                               type2 = pt [1];
+                               op = o;
+                               ot = o.OperatorType;
+                       }
+
+                       public override int GetHashCode ()
+                       {       
+                               return ret_type.GetHashCode ();
+                       }
+
+                       public override bool Equals (object o)
+                       {
+                               OperatorEntry other = (OperatorEntry) o;
+
+                               if (other.ret_type != ret_type)
+                                       return false;
+                               if (other.type1 != type1)
+                                       return false;
+                               if (other.type2 != type2)
+                                       return false;
+                               return true;
+                       }
+               }
+                               
+               //
+               // Checks that some operators come in pairs:
+               //  == and !=
+               // > and <
+               // >= and <=
+               //
+               // They are matched based on the return type and the argument types
+               //
+               void CheckPairedOperators ()
+               {
+                       Hashtable pairs = new Hashtable (null, null);
+
+                       // Register all the operators we care about.
+                       foreach (Operator op in operators){
+                               int reg = 0;
+                               
+                               switch (op.OperatorType){
+                               case Operator.OpType.Equality:
+                                       reg = 1; break;
+                               case Operator.OpType.Inequality:
+                                       reg = 2; break;
+                                       
+                               case Operator.OpType.GreaterThan:
+                                       reg = 1; break;
+                               case Operator.OpType.LessThan:
+                                       reg = 2; break;
+                                       
+                               case Operator.OpType.GreaterThanOrEqual:
+                                       reg = 1; break;
+                               case Operator.OpType.LessThanOrEqual:
+                                       reg = 2; break;
+                               }
+                               if (reg == 0)
+                                       continue;
+
+                               OperatorEntry oe = new OperatorEntry (reg, op);
+
+                               object o = pairs [oe];
+                               if (o == null)
+                                       pairs [oe] = oe;
+                               else {
+                                       oe = (OperatorEntry) o;
+                                       oe.flags |= reg;
+                               }
+                       }
+
+                       //
+                       // Look for the mistakes.
+                       //
+                       foreach (DictionaryEntry de in pairs){
+                               OperatorEntry oe = (OperatorEntry) de.Key;
+
+                               if (oe.flags == 3)
+                                       continue;
+
+                               string s = "";
+                               switch (oe.ot){
+                               case Operator.OpType.Equality:
+                                       s = "!=";
+                                       break;
+                               case Operator.OpType.Inequality: 
+                                       s = "==";
+                                       break;
+                               case Operator.OpType.GreaterThan: 
+                                       s = "<";
+                                       break;
+                               case Operator.OpType.LessThan:
+                                       s = ">";
+                                       break;
+                               case Operator.OpType.GreaterThanOrEqual:
+                                       s = "<=";
+                                       break;
+                               case Operator.OpType.LessThanOrEqual:
+                                       s = ">=";
+                                       break;
+                               }
+                               Report.Error (216, oe.op.Location,
+                                             "The operator `" + oe.op + "' requires a matching operator `" + s + "' to also be defined");
+                       }
+               }
+               
+               
        }
 
        public class Class : TypeContainer {
@@ -1834,9 +2106,8 @@ namespace Mono.CSharp {
                        Modifiers.INTERNAL |
                        Modifiers.PRIVATE |
                        Modifiers.ABSTRACT |
-                       Modifiers.SEALED |
-                       Modifiers.UNSAFE;
-
+                       Modifiers.SEALED ;
+               
                public Class (TypeContainer parent, string name, int mod, Attributes attrs, Location l)
                        : base (parent, name, l)
                {
@@ -1845,7 +2116,7 @@ namespace Mono.CSharp {
                        if (parent.Parent == null)
                                accmods = Modifiers.INTERNAL;
                        else
-                               accmods = Modifiers.PRIVATE;
+                               accmods = Modifiers.PUBLIC;
 
                        this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, l);
                        this.attributes = attrs;
@@ -1882,7 +2153,7 @@ namespace Mono.CSharp {
                        if (parent.Parent == null)
                                accmods = Modifiers.INTERNAL;
                        else
-                               accmods = Modifiers.PRIVATE;
+                               accmods = Modifiers.PUBLIC;
                        
                        this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, l);
 
@@ -1907,7 +2178,7 @@ namespace Mono.CSharp {
        }
 
        public abstract class MethodCore : MemberBase {
-               public readonly Parameters Parameters;
+               public /* readonly */ Parameters Parameters;
                Block block;
                
                //
@@ -1915,6 +2186,9 @@ namespace Mono.CSharp {
                //
                protected InternalParameters parameter_info;
                protected Type [] parameter_types;
+       
+               // Whether this is an operator
+               public bool IsOperator;
 
                public MethodCore (Expression type, int mod, int allowed_mod, string name,
                                   Attributes attrs, Parameters parameters, Location loc)
@@ -1977,12 +2251,17 @@ namespace Mono.CSharp {
                }
 
                public void LabelParameters (EmitContext ec, Type [] parameters, MethodBase builder)
+               {
+                       LabelParameters (ec, parameters, builder, null);
+               }
+
+               public void LabelParameters (EmitContext ec, Type [] parameters, MethodBase builder, Parameters p_params)
                {
                        //
                        // Define each type attribute (in/out/ref) and
                        // the argument names.
                        //
-                       Parameter [] p = Parameters.FixedParameters;
+                       Parameter [] p = p_params == null ? Parameters.FixedParameters : p_params.FixedParameters;
                        int i = 0;
                        
                        MethodBuilder mb = null;
@@ -2046,11 +2325,12 @@ namespace Mono.CSharp {
                        Modifiers.PRIVATE |
                        Modifiers.STATIC |
                        Modifiers.VIRTUAL |
-                       Modifiers.SEALED |
+                       Modifiers.NONVIRTUAL |
                        Modifiers.OVERRIDE |
                        Modifiers.ABSTRACT |
-                       Modifiers.UNSAFE |
-                       Modifiers.EXTERN;
+                       Modifiers.UNSAFE |
+                       Modifiers.EXTERN|
+                       Modifiers.SHADOWS;
 
                //
                // return_type can be "null" for VOID values.
@@ -2058,62 +2338,68 @@ namespace Mono.CSharp {
                public Method (Expression return_type, int mod, string name, Parameters parameters,
                               Attributes attrs, Location l)
                        : base (return_type, mod, AllowedModifiers, name, attrs, parameters, l)
-               { }
+               { 
+                       Implements = null;
+               }
+
+               public Method (Expression return_type, int mod, string name, Parameters parameters,
+                       Attributes attrs, Expression impl_what, Location l)
+                       : base (return_type, mod, AllowedModifiers, name, attrs, parameters, l)
+               { 
+                       Implements = impl_what;
+               }
 
                //
                // Returns the `System.Type' for the ReturnType of this
                // function.  Provides a nice cache.  (used between semantic analysis
                // and actual code generation
                //
-               public Type GetReturnType (TypeContainer parent)
+               public Type GetReturnType ()
                {
                        return MemberType;
                }
 
-               // Whether this is an operator method.
-               public bool IsOperator;
+               void DuplicateEntryPoint (MethodInfo b, Location location)
+               {
+                               Report.Error (
+                                               30738, location,
+                                               "Program `" + CodeGen.FileName +
+                                               "'  has more than one entry point defined: `" +
+                                               TypeManager.MonoBASIC_Signature(b) + "'");
+               }
 
-                void DuplicateEntryPoint (MethodInfo b, Location location)
-                {
-                        Report.Error (
-                                17, location,
-                                "Program `" + CodeGen.FileName +
-                                "'  has more than one entry point defined: `" +
-                                TypeManager.CSharpSignature(b) + "'");
-                }
-
-                void Report28 (MethodInfo b)
-                {
+               void Report28 (MethodInfo b)
+               {
                        if (RootContext.WarningLevel < 4) 
                                return;
                                
-                        Report.Warning (
-                                28, Location,
-                                "`" + TypeManager.CSharpSignature(b) +
-                                "' has the wrong signature to be an entry point");
-                }
-
-                public bool IsEntryPoint (MethodBuilder b, InternalParameters pinfo)
-                {
-                        if (b.ReturnType != TypeManager.void_type &&
-                            b.ReturnType != TypeManager.int32_type)
-                                return false;
-
-                        if (pinfo.Count == 0)
-                                return true;
-
-                        if (pinfo.Count > 1)
-                                return false;
-
-                        Type t = pinfo.ParameterType(0);
-                        if (t.IsArray &&
-                            (t.GetArrayRank() == 1) &&
-                            (t.GetElementType() == TypeManager.string_type) &&
-                            (pinfo.ParameterModifier(0) == Parameter.Modifier.NONE))
-                                return true;
-                        else
-                                return false;
-                }
+                       Report.Warning (
+                                       28, Location,
+                                       "`" + TypeManager.MonoBASIC_Signature(b) +
+                                       "' has the wrong signature to be an entry point");
+               }
+
+               public bool IsEntryPoint (MethodBuilder b, InternalParameters pinfo)
+               {
+                       if (b.ReturnType != TypeManager.void_type &&
+                               b.ReturnType != TypeManager.int32_type)
+                                       return false;
+
+                       if (pinfo.Count == 0)
+                                       return true;
+
+                       if (pinfo.Count > 1)
+                                       return false;
+
+                       Type t = pinfo.ParameterType(0);
+                       if (t.IsArray &&
+                               (t.GetArrayRank() == 1) &&
+                               (t.GetElementType() == TypeManager.string_type) &&
+                               (pinfo.ParameterModifier(0) == Parameter.Modifier.NONE))
+                                       return true;
+                       else
+                                       return false;
+               }
 
                //
                // Checks our base implementation if any
@@ -2192,17 +2478,35 @@ namespace Mono.CSharp {
                                                }
                                        }
                                } else {
-                                       if ((ModFlags & Modifiers.NEW) != 0)
-                                               WarningNotHiding (parent);
+                                       /*if ((ModFlags & Modifiers.NEW) != 0)
+                                               WarningNotHiding (parent);*/
 
                                        if ((ModFlags & Modifiers.OVERRIDE) != 0){
-                                               Report.Error (115, Location,
+                                               Report.Error (30284, Location,
                                                              parent.MakeName (Name) +
-                                                             " no suitable methods found to override");
+                                                             " : No suitable methods found to override");
                                        }
+                                       if ((ModFlags & ( Modifiers.NEW | Modifiers.SHADOWS | Modifiers.OVERRIDE )) == 0) \r
+                                       {
+                                               if ((ModFlags & Modifiers.NONVIRTUAL) != 0)\r
+                                               {
+                                                       Report.Error (31088, Location,
+                                                               parent.MakeName (Name) + " : Cannot " +
+                                                               "be declared NotOverridable since this method is " +
+                                                               "not maked as Overrides");
+                                               }
+                                       }
+                                       // if a member of module is not inherited from Object class
+                                       // can not be declared protected
+                                       if ((parent is Module) && ((ModFlags & Modifiers.PROTECTED) != 0))
+                                               Report.Error (31066, Location,
+                                                               "'Sub' or 'Function' inside a 'Module' can not be declared as " +
+                                                               "'Protected' or 'Protected Friend'");
                                }
-                       } else if ((ModFlags & Modifiers.NEW) != 0)
+                       }
+                       /* else if ((ModFlags & Modifiers.NEW) != 0)
                                WarningNotHiding (parent);
+                       */
 
                        return true;
                }
@@ -2218,6 +2522,11 @@ namespace Mono.CSharp {
                        if (!CheckBase (parent))
                                return false;
 
+                       if ((parent is Struct) && ((ModFlags & Modifiers.PROTECTED) != 0))
+                               Report.Error (31067, Location,
+                                       "'Sub' or 'Function' inside a 'Structure' can not be declared as " +
+                                       "'Protected' or 'Protected Friend'");
+
                        CallingConventions cc = GetCallingConvention (parent is Class);
 
                        MethodData = new MethodData (this, null, MemberType, ParameterTypes,
@@ -2232,10 +2541,13 @@ namespace Mono.CSharp {
                        //
                        // This is used to track the Entry Point,
                        //
-                       if (Name == "Main" &&
+                       if (Name.ToUpper() == "MAIN" &&
                            ((ModFlags & Modifiers.STATIC) != 0) && 
                            (RootContext.MainClass == null ||
-                            RootContext.MainClass == parent.TypeBuilder.FullName)){
+                            RootContext.MainClass == parent.TypeBuilder.FullName ||
+                            (RootContext.RootNamespace != null &&
+                                 RootContext.RootNamespace.Length > 0 &&
+                                 (RootContext.RootNamespace + "." + RootContext.MainClass) == parent.TypeBuilder.FullName))) {
                                 if (IsEntryPoint (MethodBuilder, ParameterInfo)) {
                                         if (RootContext.EntryPoint == null) {
                                                 RootContext.EntryPoint = MethodBuilder;
@@ -2265,6 +2577,7 @@ namespace Mono.CSharp {
                ConstructorInfo parent_constructor;
                Parameters parameters;
                Location loc;
+               public bool implicit_initialization;
                
                public ConstructorInitializer (ArrayList argument_list, Parameters parameters,
                                               Location loc)
@@ -2272,6 +2585,7 @@ namespace Mono.CSharp {
                        this.argument_list = argument_list;
                        this.parameters = parameters;
                        this.loc = loc;
+                       this.implicit_initialization = false;
                }
 
                public ArrayList Arguments {
@@ -2280,6 +2594,14 @@ namespace Mono.CSharp {
                        }
                }
 
+               public ConstructorInfo ParentConstructor
+               {
+                       get\r
+                       {
+                               return parent_constructor;
+                       }
+               }
+       
                public bool Resolve (EmitContext ec)
                {
                        Expression parent_constructor_group;
@@ -2301,14 +2623,15 @@ namespace Mono.CSharp {
                                        return true;
 
                                t = ec.ContainerType.BaseType;
-                               if (ec.ContainerType.IsValueType) {
+                               if (ec.ContainerType.IsValueType){
                                        Report.Error (522, loc,
                                                "structs cannot call base class constructors");
                                        return false;
                                }
-                       } else
+                       }\r
+                       else
                                t = ec.ContainerType;
-
+                       
                        parent_constructor_group = Expression.MemberLookup (
                                ec, t, t, ".ctor", 
                                MemberTypes.Constructor,
@@ -2316,32 +2639,38 @@ namespace Mono.CSharp {
                                loc);
                        
                        if (parent_constructor_group == null){
-                               Report.Error (1501, loc,
-                                      "Can not find a constructor for this argument list");
+                               Report.Error (30455, loc, "Class '" + t + "' can not find a constructor for this argument list" );
                                return false;
                        }
-                       
+
                        parent_constructor = (ConstructorInfo) Invocation.OverloadResolve (ec, 
                                (MethodGroupExpr) parent_constructor_group, argument_list, loc);
-                       
-                       if (parent_constructor == null){
-                               Report.Error (1501, loc,
-                                      "Can not find a constructor for this argument list");
+
+                       if (parent_constructor == null) {
+                               if (this.implicit_initialization)
+                                       Report.Error (30148, loc, "Must declare 'MyBase.New' in the constructor " +\r
+                                       "of the class '" + ec.TypeContainer.Name + "' with appropriate arguments, since the base class '" +\r
+                                               t.FullName + "' does not contain a definition of 'New' without any parameter");
+                               else
+                                       Report.Error (30455, loc, "Class '" + t + "' can not find a constructor for this argument list" );
+
                                return false;
                        }
-                       
+
                        return true;
                }
 
                public void Emit (EmitContext ec)
                {
-                       if (parent_constructor != null)
-                               ec.ig.Emit (OpCodes.Ldarg_0);
-                       if (argument_list != null)
-                               Invocation.EmitArguments (ec, null, argument_list);
-                       if (parent_constructor != null)
-                               ec.ig.Emit (OpCodes.Call, parent_constructor);
+                       if (parent_constructor != null){
+                               if (ec.IsStatic)
+                                       Invocation.EmitCall (ec, true, true, null, parent_constructor, argument_list, loc);
+                               else
+                                       Invocation.EmitCall (ec, true, false, ec.This, parent_constructor, argument_list, loc);
+                       }
                }
+
+
        }
 
        public class ConstructorBaseInitializer : ConstructorInitializer {
@@ -2366,12 +2695,13 @@ namespace Mono.CSharp {
                // <summary>
                //   Modifiers allowed for a constructor.
                // </summary>
-               const int AllowedModifiers =
+               public const int AllowedModifiers =
                        Modifiers.PUBLIC |
                        Modifiers.PROTECTED |
                        Modifiers.INTERNAL |
                        Modifiers.STATIC |
                        Modifiers.UNSAFE |
+                       Modifiers.EXTERN |              
                        Modifiers.PRIVATE;
 
                //
@@ -2384,6 +2714,12 @@ namespace Mono.CSharp {
                        Initializer = init;
                }
 
+               public Constructor (string name, int mod, Parameters args, ConstructorInitializer init, Location l)
+                       : base (null, mod, AllowedModifiers, name, null, args, l)
+               {
+                       Initializer = init;
+               }
+
                //
                // Returns true if this is a default constructor
                //
@@ -2408,33 +2744,61 @@ namespace Mono.CSharp {
                        MethodAttributes ca = (MethodAttributes.RTSpecialName |
                                               MethodAttributes.SpecialName);
 
+                       if (parent.EventHandlers != null) {
+                               ArrayList hdlrs = parent.EventHandlers;
+                               foreach(Statement stmt in hdlrs)
+                    this.Block.AddStatement (stmt);
+                       }
+
+
                        // Check if arguments were correct.
                        if (!DoDefineParameters (parent))
                                return false;
 
-                       if ((ModFlags & Modifiers.STATIC) != 0)
+                       if ((ModFlags & Modifiers.STATIC) != 0) {
                                ca |= MethodAttributes.Static;
+
+                               if (this.Parameters != Parameters.EmptyReadOnlyParameters)
+                                       Report.Error (
+                                               30479, Location, 
+                                               "Shared constructor can not have parameters");
+
+                               if ((ModFlags & Modifiers.Accessibility) != 0)
+                                       Report.Error (
+                                               30480, Location, 
+                                               "Shared constructor can not be declared " +
+                                               "explicitly as public, private, friend or protected");
+
+                               if (this.Initializer != null)
+                                       Report.Error (
+                                               30043, Location, 
+                                               "Keywords like MyBase, MyClass, Me are not " +
+                                               "valid inside a Shared Constructor");
+                       }
                        else {
-                               if (parent is Struct && ParameterTypes.Length == 0){
+                               if (parent is Struct && ParameterTypes.Length == 0)     {
                                        Report.Error (
-                                               568, Location, 
+                                               30629, Location, 
                                                "Structs can not contain explicit parameterless " +
                                                "constructors");
                                        return false;
                                }
                                ca |= MethodAttributes.HideBySig;
 
-                               if ((ModFlags & Modifiers.PRIVATE) != 0)
-                                       ca |= MethodAttributes.Private;
-                               else if ((ModFlags & Modifiers.PROTECTED) != 0){
+                               if ((ModFlags & Modifiers.PUBLIC) != 0)
+                                       ca |= MethodAttributes.Public;
+                               else if ((ModFlags & Modifiers.PROTECTED) != 0) {
                                        if ((ModFlags & Modifiers.INTERNAL) != 0)
                                                ca |= MethodAttributes.FamORAssem;
                                        else 
                                                ca |= MethodAttributes.Family;
-                               } else if ((ModFlags & Modifiers.INTERNAL) != 0)
+                               }\r
+                               else if ((ModFlags & Modifiers.INTERNAL) != 0)
                                        ca |= MethodAttributes.Assembly;
-                               else
+                               else if (IsDefault ())
                                        ca |= MethodAttributes.Public;
+                               else
+                                       ca |= MethodAttributes.Private;
                        }
 
                        ConstructorBuilder = parent.TypeBuilder.DefineConstructor (
@@ -2464,10 +2828,11 @@ namespace Mono.CSharp {
                        EmitContext ec = new EmitContext (parent, Location, ig, null, ModFlags, true);
 
                        if ((ModFlags & Modifiers.STATIC) == 0){
-                               if (parent is Class && Initializer == null)
+                               if (parent is Class && Initializer == null) {
                                        Initializer = new ConstructorBaseInitializer (
                                                null, Parameters.EmptyReadOnlyParameters, parent.Location);
-
+                                       Initializer.implicit_initialization = true;
+                               }
 
                                //
                                // Spec mandates that Initializers will not have
@@ -2488,8 +2853,15 @@ namespace Mono.CSharp {
                                if ((ModFlags & Modifiers.STATIC) == 0)
                                        parent.EmitFieldInitializers (ec);
                        }
-                       if (Initializer != null)
+
+                       if (Initializer != null) {
+                               if (this.ConstructorBuilder.Equals (Initializer.ParentConstructor))
+                                       Report.Error (
+                                               30297, Location,
+                                               "A constructor can not call itself" );
+
                                Initializer.Emit (ec);
+                       }
                        
                        if ((ModFlags & Modifiers.STATIC) != 0)
                                parent.EmitFieldInitializers (ec);
@@ -2745,7 +3117,7 @@ namespace Mono.CSharp {
                        else
                                name = member.ShortName;
                        method_name = prefix + name;
-                               
+
                        if (parent.Pending != null){
                                if (member is Indexer)
                                        implementing = parent.Pending.IsInterfaceIndexer (
@@ -2803,7 +3175,7 @@ namespace Mono.CSharp {
                                //
                                if (implementing.DeclaringType.IsInterface)
                                        flags |= MethodAttributes.NewSlot;
-                               
+
                                flags |=
                                        MethodAttributes.Virtual |
                                        MethodAttributes.HideBySig;
@@ -2908,13 +3280,13 @@ namespace Mono.CSharp {
                                if ((modifiers & Modifiers.ABSTRACT) != 0)
                                        Report.Error (
                                                500, Location, "Abstract method `" +
-                                               TypeManager.CSharpSignature (builder) +
+                                               TypeManager.MonoBASIC_Signature (builder) +
                                                "' can not have a body");
 
                                if ((modifiers & Modifiers.EXTERN) != 0)
                                        Report.Error (
                                                179, Location, "External method `" +
-                                               TypeManager.CSharpSignature (builder) +
+                                               TypeManager.MonoBASIC_Signature (builder) +
                                                "' can not have a body");
 
                                return;
@@ -2926,7 +3298,7 @@ namespace Mono.CSharp {
                        if (block == null) {
                                Report.Error (
                                        501, Location, "Method `" +
-                                       TypeManager.CSharpSignature (builder) +
+                                       TypeManager.MonoBASIC_Signature (builder) +
                                        "' must declare a body since it is not marked " +
                                        "abstract or extern");
                                return;
@@ -2947,16 +3319,20 @@ namespace Mono.CSharp {
                                        Location end = block.EndLocation;
                                        MethodToken token = MethodBuilder.GetToken ();
                                        sw.OpenMethod (new SymbolToken (token.Token));
-                                       sw.SetMethodSourceRange (Location.SymbolDocument,
-                                                                Location.Row, 0,
-                                                                end.SymbolDocument,
-                                                                end.Row, 0);
+                                       // Avoid error if we don't support debugging for the platform
+                                       try {
+                                               sw.SetMethodSourceRange (Location.SymbolDocument,
+                                                                        Location.Row, 0,
+                                                                        end.SymbolDocument,
+                                                                        end.Row, 0);
+                                       } catch (Exception) {
+                                       }
 
-                                       ec.EmitTopBlock (block, ParameterInfo, Location);
+                                       ec.EmitTopBlock (block, member.Name, ParameterInfo, Location);
 
                                        sw.CloseMethod ();
                                } else
-                                       ec.EmitTopBlock (block, ParameterInfo, Location);
+                                       ec.EmitTopBlock (block, member.Name, ParameterInfo, Location);
                        }
                }
 
@@ -3002,6 +3378,7 @@ namespace Mono.CSharp {
        abstract public class MemberBase : MemberCore {
                public Expression Type;
                public readonly Attributes OptAttributes;
+               public Expression Implements;
 
                protected MethodAttributes flags;
 
@@ -3049,7 +3426,7 @@ namespace Mono.CSharp {
                        : base (name, loc)
                {
                        Type = type;
-                       ModFlags = Modifiers.Check (allowed_mod, mod, Modifiers.PRIVATE, loc);
+                       ModFlags = Modifiers.Check (allowed_mod, mod, Modifiers.PUBLIC, loc);
                        OptAttributes = attrs;
                }
 
@@ -3072,12 +3449,12 @@ namespace Mono.CSharp {
                                if (this is Indexer)
                                        Report.Error (55, Location,
                                                      "Inconsistent accessibility: parameter type `" +
-                                                     TypeManager.CSharpName (partype) + "' is less " +
+                                                     TypeManager.MonoBASIC_Name (partype) + "' is less " +
                                                      "accessible than indexer `" + Name + "'");
                                else
                                        Report.Error (51, Location,
                                                      "Inconsistent accessibility: parameter type `" +
-                                                     TypeManager.CSharpName (partype) + "' is less " +
+                                                     TypeManager.MonoBASIC_Name (partype) + "' is less " +
                                                      "accessible than method `" + Name + "'");
                                error = true;
                        }
@@ -3105,22 +3482,22 @@ namespace Mono.CSharp {
                                if (this is Property)
                                        Report.Error (53, Location,
                                                      "Inconsistent accessibility: property type `" +
-                                                     TypeManager.CSharpName (MemberType) + "' is less " +
+                                                     TypeManager.MonoBASIC_Name (MemberType) + "' is less " +
                                                      "accessible than property `" + Name + "'");
                                else if (this is Indexer)
                                        Report.Error (54, Location,
                                                      "Inconsistent accessibility: indexer return type `" +
-                                                     TypeManager.CSharpName (MemberType) + "' is less " +
+                                                     TypeManager.MonoBASIC_Name (MemberType) + "' is less " +
                                                      "accessible than indexer `" + Name + "'");
                                else if (this is Method)
                                        Report.Error (50, Location,
                                                      "Inconsistent accessibility: return type `" +
-                                                     TypeManager.CSharpName (MemberType) + "' is less " +
+                                                     TypeManager.MonoBASIC_Name (MemberType) + "' is less " +
                                                      "accessible than method `" + Name + "'");
                                else
                                        Report.Error (52, Location,
                                                      "Inconsistent accessibility: field type `" +
-                                                     TypeManager.CSharpName (MemberType) + "' is less " +
+                                                     TypeManager.MonoBASIC_Name (MemberType) + "' is less " +
                                                      "accessible than field `" + Name + "'");
                                return false;
                        }
@@ -3131,7 +3508,7 @@ namespace Mono.CSharp {
                        //
                        // Check for explicit interface implementation
                        //
-                       if ((ExplicitInterfaceName == null) && (Name.IndexOf (".") != -1)){
+                       if ((ExplicitInterfaceName == null) && (Name.IndexOf (".") != -1)) {
                                int pos = Name.LastIndexOf (".");
 
                                ExplicitInterfaceName = Name.Substring (0, pos);
@@ -3217,6 +3594,7 @@ namespace Mono.CSharp {
 
                        return init_expr;
                }
+
        }
 
        //
@@ -3227,14 +3605,14 @@ namespace Mono.CSharp {
                //   Modifiers allowed in a class declaration
                // </summary>
                const int AllowedModifiers =
-                       Modifiers.NEW |
+                       Modifiers.SHADOWS |
                        Modifiers.PUBLIC |
                        Modifiers.PROTECTED |
                        Modifiers.INTERNAL |
                        Modifiers.PRIVATE |
                        Modifiers.STATIC |
-                       Modifiers.VOLATILE |
-                       Modifiers.UNSAFE |
+                  //     Modifiers.VOLATILE |
+                  //     Modifiers.UNSAFE |
                        Modifiers.READONLY;
 
                public Field (Expression type, int mod, string name, Object expr_or_array_init,
@@ -3253,7 +3631,7 @@ namespace Mono.CSharp {
                        if (!parent.AsAccessible (t, ModFlags)) {
                                Report.Error (52, Location,
                                              "Inconsistent accessibility: field type `" +
-                                             TypeManager.CSharpName (t) + "' is less " +
+                                             TypeManager.MonoBASIC_Name (t) + "' is less " +
                                              "accessible than field `" + Name + "'");
                                return false;
                        }
@@ -3261,18 +3639,41 @@ namespace Mono.CSharp {
                        if (t.IsPointer && !UnsafeOK (parent))
                                return false;
                                
-                       if (RootContext.WarningLevel > 1){
-                               Type ptype = parent.TypeBuilder.BaseType;
+                       Type ptype = parent.TypeBuilder.BaseType;
 
-                               // ptype is only null for System.Object while compiling corlib.
-                               if (ptype != null){
-                                       TypeContainer.FindMembers (
-                                               ptype, MemberTypes.Method,
-                                               BindingFlags.Public |
-                                               BindingFlags.Static | BindingFlags.Instance,
-                                               System.Type.FilterName, Name);
+                       // ptype is only null for System.Object while compiling corlib.
+                       if (ptype != null){
+                               MemberList list = TypeContainer.FindMembers (
+                                       ptype, MemberTypes.Field,
+                                       BindingFlags.Public |
+                                       BindingFlags.Static | BindingFlags.Instance,
+                                       System.Type.FilterName, Name);
+
+                               if (RootContext.WarningLevel > 1){      
+                                       if ((list.Count > 0) && ((ModFlags & Modifiers.SHADOWS) == 0)) \r
+                                       {
+                                               Report.Warning (
+                                                       40004, 2, Location, 
+                                                       "Variable '" + Name + "' should be declared " +
+                                                       "Shadows since the base type '" + ptype.Name + 
+                                                       "' has a variable with same name");
+
+                                               ModFlags |= Modifiers.SHADOWS;
+                                       }
                                }
+                               if (list.Count == 0)
+                                       // if a member of module is not inherited from Object class
+                                       // can not be declared protected
+                                       if ((parent is Module) && ((ModFlags & Modifiers.PROTECTED) != 0))
+                                       Report.Error (30593, Location,
+                                               "'Variable' inside a 'Module' can not be " +
+                                               "declared as 'Protected'");
                        }
+                       
+                       if ((parent is Struct) && ((ModFlags & Modifiers.PROTECTED) != 0))
+                               Report.Error (30435, Location,
+                                       "'Variable' inside a 'Structure' can not be " +
+                                       "declared as 'Protected'");
 
                        if ((ModFlags & Modifiers.VOLATILE) != 0){
                                if (!t.IsClass){
@@ -3291,12 +3692,22 @@ namespace Mono.CSharp {
                                                Report.Error (
                                                        677, Location, parent.MakeName (Name) +
                                                        " A volatile field can not be of type `" +
-                                                       TypeManager.CSharpName (t) + "'");
+                                                       TypeManager.MonoBASIC_Name (t) + "'");
                                                return false;
                                        }
                                }
                        }
-                       
+
+                       FieldAttributes fa = Modifiers.FieldAttr (ModFlags);
+
+                       if (parent is Struct && 
+                           ((fa & FieldAttributes.Static) == 0) &&
+                           t == parent.TypeBuilder &&
+                           !TypeManager.IsBuiltinType (t)){
+                               Report.Error (523, Location, "Struct member `" + parent.Name + "." + Name + 
+                                             "' causes a cycle in the structure layout");
+                               return false;
+                       }
                        FieldBuilder = parent.TypeBuilder.DefineField (
                                Name, t, Modifiers.FieldAttr (ModFlags));
 
@@ -3364,98 +3775,152 @@ namespace Mono.CSharp {
                //
                // Checks our base implementation if any
                //
-               protected override bool CheckBase (TypeContainer parent)
+               protected override bool CheckBase (TypeContainer container)
                {
+                       base.CheckBase (container);
+                       
                        // Check whether arguments were correct.
-                       if (!DoDefineParameters (parent))
+                       if (!DoDefineParameters (container))
                                return false;
 
+                       if (IsExplicitImpl)
+                               return true;
+
                        MethodSignature ms = new MethodSignature (Name, null, ParameterTypes);
-                       MemberList props_this;
-
-                       props_this = TypeContainer.FindMembers (
-                               parent.TypeBuilder, MemberTypes.Property,
-                               BindingFlags.NonPublic | BindingFlags.Public |
-                               BindingFlags.Static | BindingFlags.Instance |
-                               BindingFlags.DeclaredOnly,
-                               MethodSignature.method_signature_filter, ms);
-
-                       if (props_this.Count > 0) {
-                               Report.Error (111, Location, "Class `" + parent.Name + "' " +
-                                             "already defines a member called `" + Name + "' " +
-                                             "with the same parameter types");
-                               return false;
+                       if (!IsOperator) \r
+                       {
+                               MemberList mi_this;
+
+                               mi_this = TypeContainer.FindMembers (
+                                       container.TypeBuilder, MemberTypes.Property,
+                                       BindingFlags.NonPublic | BindingFlags.Public |
+                                       BindingFlags.Static | BindingFlags.Instance |
+                                       BindingFlags.DeclaredOnly,
+                                       MethodSignature.method_signature_filter, ms);
+
+                               if (mi_this.Count > 0) {
+                                       Report.Error (111, Location, "Class `" + container.Name + "' " +
+                                               "already defines a member called `" + Name + "' " +
+                                               "with the same parameter types");
+                                       return false;
+                               }
+                       }
+
+                       if (container is Interface)
+                               return true;
+                       
+                       string report_name;
+                       MethodSignature base_ms;
+                       if (this is Indexer) {
+                               string name, base_name;
+
+                               report_name = "this";
+                               name = TypeManager.IndexerPropertyName (container.TypeBuilder);
+                               ms = new MethodSignature (name, null, ParameterTypes);
+                               base_name = TypeManager.IndexerPropertyName (container.TypeBuilder.BaseType);
+                               base_ms = new MethodSignature (base_name, null, ParameterTypes);
+                       } else {
+                               report_name = Name;
+                               ms = base_ms = new MethodSignature (Name, null, ParameterTypes);
                        }
 
                        //
-                       // Find properties with the same name on the base class
+                       // Verify if the parent has a type with the same name, and then
+                       // check whether we have to create a new slot for it or not.
                        //
-                       MemberList props;
-                       MemberList props_static = TypeContainer.FindMembers (
-                               parent.TypeBuilder.BaseType, MemberTypes.Property,
+                       Type ptype = container.TypeBuilder.BaseType;
+
+                       MemberInfo parent_member = null;
+                       MemberList mi, mi_static, mi_instance;
+
+                       mi_static = TypeContainer.FindMembers (
+                               ptype, MemberTypes.Property,
                                BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static,
-                               MethodSignature.inheritable_property_signature_filter, ms);
+                               MethodSignature.inheritable_method_signature_filter, ms);
 
-                       MemberList props_instance = TypeContainer.FindMembers (
-                               parent.TypeBuilder.BaseType, MemberTypes.Property,
+                       mi_instance = TypeContainer.FindMembers (
+                               ptype, MemberTypes.Property,
                                BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance,
-                               MethodSignature.inheritable_property_signature_filter,
+                               MethodSignature.inheritable_method_signature_filter,
                                ms);
 
-                       //
-                       // Find if we have anything
-                       //
-                       if (props_static.Count > 0)
-                               props = props_static;
-                       else if (props_instance.Count > 0)
-                               props = props_instance;
+                       if (mi_instance.Count > 0) {
+                               mi = mi_instance;
+                       } else if (mi_static.Count > 0)
+                               mi = mi_static;
                        else
-                               props = null;
+                               mi = null;
 
-                       //
-                       // If we have something on the base.
-                       if (props != null && props.Count > 0){
-                               PropertyInfo pi = (PropertyInfo) props [0];
+                       if (mi != null && mi.Count > 0)\r
+                               parent_member = (MethodInfo) mi [0];
+\r
+                       if (parent_member is PropertyInfo) {
+                               PropertyInfo parent_property = (PropertyInfo)parent_member;
 
-                               MethodInfo inherited_get = TypeManager.GetPropertyGetter (pi);
-                               MethodInfo inherited_set = TypeManager.GetPropertySetter (pi);
+                               string name = parent_property.DeclaringType.Name + "." +
+                                       parent_property.Name;
 
-                               MethodInfo reference = inherited_get == null ?
-                                       inherited_set : inherited_get;
-                               
-                               if (reference != null) {
-                                       string name = reference.DeclaringType.Name + "." + Name;
+                               MethodInfo get, set, parent_method;
+                               get = parent_property.GetGetMethod (true);
+                               set = parent_property.GetSetMethod (true);
 
-                                       if (!CheckMethodAgainstBase (parent, flags, reference, name))
-                                               return false;
-                               }
+                               if (get != null)
+                                       parent_method = get;
+                               else if (set != null)
+                                       parent_method = set;
+                               else
+                                       throw new Exception ("Internal error!");
 
-                               if (((ModFlags & Modifiers.NEW) == 0) && (pi.PropertyType != MemberType)) {
-                                       Report.Error (508, parent.MakeName (Name) + ": cannot " +
-                                                     "change return type when overriding inherited " +
-                                                     "member `" + pi.DeclaringType + "." + pi.Name + "'");
+                               if (!CheckMethodAgainstBase (container, flags, parent_method, name))
                                        return false;
+
+                               if ((ModFlags & Modifiers.NEW) == 0) {
+                                       Type parent_type = TypeManager.TypeToCoreType (
+                                               parent_property.PropertyType);
+
+                                       if (parent_type != MemberType) {
+                                               Report.Error (
+                                                       508, Location, container.MakeName (Name) + ": cannot " +
+                                                       "change return type when overriding " +
+                                                       "inherited member " + name);
+                                               return false;
+                                       }
                                }
-                       } else {
-                               if ((ModFlags & Modifiers.NEW) != 0)
-                                       WarningNotHiding (parent);
-                               
-                               if ((ModFlags & Modifiers.OVERRIDE) != 0){
+                       } else if (parent_member == null) {
+                               /*if ((ModFlags & Modifiers.NEW) != 0)
+                                       WarningNotHiding (container);
+                               */
+                               if ((ModFlags & Modifiers.OVERRIDE) != 0) {
                                        if (this is Indexer)
                                                Report.Error (115, Location,
-                                                             parent.MakeName (Name) +
-                                                             " no suitable indexers found to override");
+                                                       container.MakeName (Name) +
+                                                       " no suitable indexers found to override");
                                        else
                                                Report.Error (115, Location,
-                                                             parent.MakeName (Name) +
-                                                             " no suitable properties found to override");
+                                                       container.MakeName (Name) +
+                                                       " no suitable properties found to override");
                                        return false;
                                }
+
+                               if ((ModFlags & ( Modifiers.NEW | Modifiers.SHADOWS | Modifiers.OVERRIDE )) == 0) {
+                                       if ((ModFlags & Modifiers.NONVIRTUAL) != 0)     {
+                                               Report.Error (31088, Location,
+                                                       container.MakeName (Name) + " : Cannot " +
+                                                       "be declared NotOverridable since this method is " +
+                                                       "not maked as Overrides");
+                                       }
+                               }
+                               // if a member of module is not inherited from Object class
+                               // can not be declared protected
+                               if ((container is Module) && ((ModFlags & Modifiers.PROTECTED) != 0))
+                                       Report.Error (31066, Location,
+                                               "'Property' inside a 'Module' can not be declared as " +
+                                               "'Protected' or 'Protected Friend'");
                        }
                        return true;
                }
 
-               public void Emit (TypeContainer tc)
+               public virtual void Emit (TypeContainer tc)
                {
                        //
                        // The PropertyBuilder can be null for explicit implementations, in that
@@ -3464,12 +3929,13 @@ namespace Mono.CSharp {
                        //
                        if (PropertyBuilder != null)
                                Attribute.ApplyAttributes (ec, PropertyBuilder, this, OptAttributes, Location);
-
+/*
                        if (GetData != null)
                                GetData.Emit (tc, Get.Block, Get);
 
                        if (SetData != null)
                                SetData.Emit (tc, Set.Block, Set);
+*/                             
                }
        }
                        
@@ -3484,21 +3950,52 @@ namespace Mono.CSharp {
                        Modifiers.SEALED |
                        Modifiers.OVERRIDE |
                        Modifiers.ABSTRACT |
-                       Modifiers.UNSAFE |
+                   Modifiers.UNSAFE |
                        Modifiers.EXTERN |
-                       Modifiers.VIRTUAL;
-
+                       Modifiers.VIRTUAL |
+                       Modifiers.NONVIRTUAL |
+                       Modifiers.DEFAULT |
+                       Modifiers.READONLY |
+                       Modifiers.WRITEONLY |
+                       Modifiers.SHADOWS;
+
+               string set_parameter_name;
+               Parameters get_params;
+               Parameters set_params;
+               
                public Property (Expression type, string name, int mod_flags,
-                                Accessor get_block, Accessor set_block,
-                                Attributes attrs, Location loc)
+                               Accessor get_block, Accessor set_block,
+                               Attributes attrs, Location loc, string set_name, 
+                               Parameters p_get, Parameters p_set, Expression impl_what)
                        : base (type, name, mod_flags, AllowedModifiers,
-                               Parameters.EmptyReadOnlyParameters,
+                               p_set,
                                get_block, set_block, attrs, loc)
+               {
+                       set_parameter_name = set_name;
+                       get_params = p_get;
+                       set_params = p_set;
+                       Implements = impl_what;
+               }               
+               
+               public Property (Expression type, string name, int mod_flags,
+                                Accessor get_block, Accessor set_block,
+                                Attributes attrs, Location loc)
+                       : this (type, name, mod_flags, get_block, set_block, attrs, loc, 
+                                       "Value", Parameters.EmptyReadOnlyParameters, Parameters.EmptyReadOnlyParameters, null)
                {
                }
 
                public override bool Define (TypeContainer parent)
                {
+                       Type [] g_parameters=null, s_parameters=null;
+                       Parameter [] g_parms, s_parms;
+                       InternalParameters g_ip=null, s_ip=null;
+
+                       if ((parent is Struct) && ((ModFlags & Modifiers.PROTECTED) != 0))
+                               Report.Error (30435, Location,
+                                       "'Property' inside a 'Structure' can not be declared as " +
+                                       "'Protected' or 'Protected Friend'");
+
                        if (!DoDefine (parent))
                                return false;
 
@@ -3507,14 +4004,34 @@ namespace Mono.CSharp {
 
                        flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
 
-                       if (Get != null) {
-                               Type [] parameters = TypeManager.NoTypes;
-
-                               InternalParameters ip = new InternalParameters (
-                                       parent, Parameters.EmptyReadOnlyParameters);
+                       if (Get == null) {
+                               if ((ModFlags & Modifiers.WRITEONLY) == 0)
+                                       Report.Error (
+                                               30124, Location,
+                                               "Property without 'Get' accessor must have a 'WriteOnly' modifier");
+                       }
+                       else {
+                               if (get_params == Parameters.EmptyReadOnlyParameters) {
+                                       g_parameters = TypeManager.NoTypes;
+                                       g_ip = new InternalParameters (
+                                                       parent, Parameters.EmptyReadOnlyParameters);
+                               } else  {
+                                       g_parameters = new Type [get_params.FixedParameters.Length];
+                                       for (int i = 0; i < get_params.FixedParameters.Length; i ++) {
+                                               g_parameters[i] = get_params.FixedParameters[i].ParameterType;
+                                       }
+                                       g_parms = new Parameter [get_params.FixedParameters.Length];
+                                       for (int i = 0; i < get_params.FixedParameters.Length; i ++) {
+                                               Parameter tp = get_params.FixedParameters[i];
+                                               g_parms[i] = new Parameter (tp.TypeName, tp.Name,
+                                                       Parameter.Modifier.NONE, null);
+                                       }
+                                       g_ip = new InternalParameters (
+                                               parent, new Parameters (g_parms, null, Location));
+                               }
 
                                GetData = new MethodData (this, "get", MemberType,
-                                                         parameters, ip, CallingConventions.Standard,
+                                                         g_parameters, g_ip, CallingConventions.Standard,
                                                          Get.OptAttributes, ModFlags, flags, false);
 
                                if (!GetData.Define (parent))
@@ -3523,24 +4040,50 @@ namespace Mono.CSharp {
                                GetBuilder = GetData.MethodBuilder;
                        }
 
-                       if (Set != null) {
-                               Type [] parameters = new Type [1];
-                               parameters [0] = MemberType;
+                       if (Set == null) {
+                               if ((ModFlags & Modifiers.READONLY) == 0)
+                                       Report.Error (
+                                               30124, Location,
+                                               "Property without 'Set' accessor must have a 'ReadOnly' modifier");
+                                               
+                       }
+                       else \r
+                       {
+                               if (set_params == Parameters.EmptyReadOnlyParameters) 
+                               {
+                                       s_parameters = new Type [1];
+                                       s_parameters [0] = MemberType;
+
+                                       s_parms = new Parameter [1];
+                                       s_parms [0] = new Parameter (Type, set_parameter_name, 
+                                               Parameter.Modifier.NONE, null);
+                               } else {
+                                       s_parameters = new Type [set_params.FixedParameters.Length];
+                                       for (int i = 0; i < set_params.FixedParameters.Length; i ++) {
+                                               s_parameters[i] = set_params.FixedParameters[i].ParameterType;
+                                       }
+
+                                       s_parms = new Parameter [set_params.FixedParameters.Length];
+                                       for (int i = 0; i < set_params.FixedParameters.Length; i ++) {
+                                               Parameter tp = set_params.FixedParameters[i];
+                                               s_parms[i] = new Parameter (tp.TypeName, tp.Name,
+                                                       Parameter.Modifier.NONE, null);
+                                       }
+                               }
 
-                               Parameter [] parms = new Parameter [1];
-                               parms [0] = new Parameter (Type, "value", Parameter.Modifier.NONE, null);
-                               InternalParameters ip = new InternalParameters (
-                                       parent, new Parameters (parms, null, Location));
+                               s_ip = new InternalParameters (
+                                       parent, new Parameters (s_parms, null, Location));
 
                                SetData = new MethodData (this, "set", TypeManager.void_type,
-                                                         parameters, ip, CallingConventions.Standard,
-                                                         Set.OptAttributes, ModFlags, flags, false);
+                                       s_parameters, s_ip, CallingConventions.Standard,
+                                       Set.OptAttributes, ModFlags, flags, false);
 
                                if (!SetData.Define (parent))
                                        return false;
 
                                SetBuilder = SetData.MethodBuilder;
-                               SetBuilder.DefineParameter (1, ParameterAttributes.None, "value"); 
+                               SetBuilder.DefineParameter (1, ParameterAttributes.None, 
+                                       set_parameter_name); 
                        }
 
                        // FIXME - PropertyAttributes.HasDefault ?
@@ -3553,11 +4096,8 @@ namespace Mono.CSharp {
                                PropertyBuilder = parent.TypeBuilder.DefineProperty (
                                        Name, prop_attr, MemberType, null);
                                
-                               if (Get != null)
-                                       PropertyBuilder.SetGetMethod (GetBuilder);
-                               
-                               if (Set != null)
-                                       PropertyBuilder.SetSetMethod (SetBuilder);
+                               PropertyBuilder.SetGetMethod (GetBuilder);
+                               PropertyBuilder.SetSetMethod (SetBuilder);
 
                                //
                                // HACK for the reasons exposed above
@@ -3573,6 +4113,24 @@ namespace Mono.CSharp {
                        }
                        return true;
                }
+
+               public override void Emit (TypeContainer tc)
+               {
+                       base.Emit (tc);
+                       
+                       if (GetData != null) 
+                       {
+                               Parameters = get_params;
+                               GetData.Emit (tc, Get.Block, Get);
+                       }
+
+                       if (SetData != null) 
+                       {
+                               Parameters = set_params;
+                               SetData.Emit (tc, Set.Block, Set);
+                       }
+                               
+               }
        }
 
        /// </summary>
@@ -3747,7 +4305,7 @@ namespace Mono.CSharp {
                                return false;
 
                        if (!MemberType.IsSubclassOf (TypeManager.delegate_type)) {
-                               Report.Error (66, Location, "'" + parent.Name + "." + Name +
+                               Report.Error (31044, Location, "'" + parent.Name + "." + Name +
                                              "' : event must be of a delegate type");
                                return false;
                        }
@@ -3756,7 +4314,7 @@ namespace Mono.CSharp {
                        parameter_types [0] = MemberType;
 
                        Parameter [] parms = new Parameter [1];
-                       parms [0] = new Parameter (Type, "value", Parameter.Modifier.NONE, null);
+                       parms [0] = new Parameter (Type, /* was "value" */ this.Name, Parameter.Modifier.NONE, null);
                        InternalParameters ip = new InternalParameters (
                                parent, new Parameters (parms, null, Location)); 
 
@@ -3775,7 +4333,7 @@ namespace Mono.CSharp {
                                return false;
 
                        AddBuilder = AddData.MethodBuilder;
-                       AddBuilder.DefineParameter (1, ParameterAttributes.None, "value");
+                       AddBuilder.DefineParameter (1, ParameterAttributes.None, /* was "value" */ this.Name);
 
                        RemoveData = new MethodData (this, "remove", TypeManager.void_type,
                                                     parameter_types, ip, CallingConventions.Standard,
@@ -3786,7 +4344,7 @@ namespace Mono.CSharp {
                                return false;
 
                        RemoveBuilder = RemoveData.MethodBuilder;
-                       RemoveBuilder.DefineParameter (1, ParameterAttributes.None, "value");
+                       RemoveBuilder.DefineParameter (1, ParameterAttributes.None, /* was "value" */ this.Name);
 
                        if (!IsExplicitImpl){
                                EventBuilder = new MyEventBuilder (
@@ -3794,7 +4352,8 @@ namespace Mono.CSharp {
                                        
                                if (Add == null && Remove == null) {
                                        FieldBuilder = parent.TypeBuilder.DefineField (
-                                               Name, MemberType, FieldAttributes.FamANDAssem);
+                                               Name, MemberType,
+                                               FieldAttributes.FamANDAssem | ((ModFlags & Modifiers.STATIC) != 0 ? FieldAttributes.Static : 0));
                                        TypeManager.RegisterPrivateFieldOfEvent (
                                                (EventInfo) EventBuilder, FieldBuilder);
                                        TypeManager.RegisterFieldBase (FieldBuilder, this);
@@ -3981,7 +4540,7 @@ namespace Mono.CSharp {
 
                                fixed_parms.CopyTo (tmp, 0);
                                tmp [fixed_parms.Length] = new Parameter (
-                                       Type, "value", Parameter.Modifier.NONE, null);
+                                       Type, /* was "value" */ this.Name, Parameter.Modifier.NONE, null);
 
                                Parameters set_formal_params = new Parameters (tmp, null, Location);
                                
@@ -4013,10 +4572,11 @@ namespace Mono.CSharp {
                                                SetBuilder.DefineParameter (
                                                        i + 1, p [i].Attributes, p [i].Name);
                                }
+                               
 
                                if (Set != null)
                                        SetBuilder.DefineParameter (
-                                               i + 1, ParameterAttributes.None, "value");
+                                               i + 1, ParameterAttributes.None, /* was "value" */ this.Name);
                                        
                                if (i != ParameterTypes.Length) {
                                        Parameter array_param = Parameters.ArrayParameter;
@@ -4165,7 +4725,7 @@ namespace Mono.CSharp {
                        
                        OperatorMethod = new Method (ReturnType, ModFlags, MethodName,
                                                     new Parameters (param_list, null, Location),
-                                                    OptAttributes, Mono.CSharp.Location.Null);
+                                                    OptAttributes, Mono.MonoBASIC.Location.Null);
 
                        OperatorMethod.IsOperator = true;                       
                        OperatorMethod.Define (parent);
@@ -4177,7 +4737,7 @@ namespace Mono.CSharp {
 
                        Type [] param_types = OperatorMethod.ParameterTypes;
                        Type declaring_type = OperatorMethodBuilder.DeclaringType;
-                       Type return_type = OperatorMethod.GetReturnType (parent);
+                       Type return_type = OperatorMethod.GetReturnType ();
                        Type first_arg_type = param_types [0];
 
                        // Rules for conversion operators
@@ -4287,6 +4847,84 @@ namespace Mono.CSharp {
                        OperatorMethod.Block = Block;
                        OperatorMethod.Emit (parent);
                }
+
+               public static string GetName (OpType ot)
+               {
+                       switch (ot){
+                       case OpType.LogicalNot:
+                               return "!";
+                       case OpType.OnesComplement:
+                               return "~";
+                       case OpType.Increment:
+                               return "++";
+                       case OpType.Decrement:
+                               return "--";
+                       case OpType.True:
+                               return "true";
+                       case OpType.False:
+                               return "false";
+                       case OpType.Addition:
+                               return "+";
+                       case OpType.Subtraction:
+                               return "-";
+                       case OpType.UnaryPlus:
+                               return "+";
+                       case OpType.UnaryNegation:
+                               return "-";
+                       case OpType.Multiply:
+                               return "*";
+                       case OpType.Division:
+                               return "/";
+                       case OpType.Modulus:
+                               return "%";
+                       case OpType.BitwiseAnd:
+                               return "&";
+                       case OpType.BitwiseOr:
+                               return "|";
+                       case OpType.ExclusiveOr:
+                               return "^";
+                       case OpType.LeftShift:
+                               return "<<";
+                       case OpType.RightShift:
+                               return ">>";
+                       case OpType.Equality:
+                               return "==";
+                       case OpType.Inequality:
+                               return "!=";
+                       case OpType.GreaterThan:
+                               return ">";
+                       case OpType.LessThan:
+                               return "<";
+                       case OpType.GreaterThanOrEqual:
+                               return ">=";
+                       case OpType.LessThanOrEqual:
+                               return "<=";
+                       case OpType.Implicit:
+                               return "implicit";
+                       case OpType.Explicit:
+                               return "explicit";
+                       default: return "";
+                       }
+               }
+               
+               public override string ToString ()
+               {
+                       Type return_type = OperatorMethod.GetReturnType();
+                       Type [] param_types = OperatorMethod.ParameterTypes;
+                       
+                       if (SecondArgType == null)
+                               return String.Format (
+                                       "{0} operator {1}({2})",
+                                       TypeManager.MonoBASIC_Name (return_type),
+                                       GetName (OperatorType),
+                                       param_types [0]);
+                       else
+                               return String.Format (
+                                       "{0} operator {1}({2}, {3})",
+                                       TypeManager.MonoBASIC_Name (return_type),
+                                       GetName (OperatorType),
+                                       param_types [0], param_types [1]);
+               }
        }
 
        //
@@ -4303,6 +4941,12 @@ namespace Mono.CSharp {
                /// </summary>
                public static MemberFilter method_signature_filter;
 
+               /// <summary>
+               ///    This delegate is used to extract methods which have the
+               ///    same signature as the argument except for the name
+               /// </summary>
+               public static MemberFilter method_signature_noname_filter;
+
                /// <summary>
                ///   This delegate is used to extract inheritable methods which
                ///   have the same signature as the argument.  By inheritable,
@@ -4322,6 +4966,7 @@ namespace Mono.CSharp {
                static MethodSignature ()
                {
                        method_signature_filter = new MemberFilter (MemberSignatureCompare);
+                       method_signature_noname_filter = new MemberFilter (MemberSignatureCompareNoName);
                        inheritable_method_signature_filter = new MemberFilter (
                                InheritableMemberSignatureCompare);
                        inheritable_property_signature_filter = new MemberFilter (
@@ -4374,11 +5019,21 @@ namespace Mono.CSharp {
                        return true;
                }
 
+               static bool MemberSignatureCompareNoName (MemberInfo m, object filter_criteria)
+               {
+                       return MemberSignatureCompare (m, filter_criteria, false);
+               }
+
                static bool MemberSignatureCompare (MemberInfo m, object filter_criteria)
+               {
+                       return MemberSignatureCompare (m, filter_criteria, true);
+               }
+
+               static bool MemberSignatureCompare (MemberInfo m, object filter_criteria, bool use_name)
                {
                        MethodSignature sig = (MethodSignature) filter_criteria;
 
-                       if (m.Name != sig.Name)
+                       if (use_name && (m.Name != sig.Name))
                                return false;
 
                        Type ReturnType;