Replace FullName with CSharpSignature
[mono.git] / mcs / mcs / class.cs
index 69d870bd21b5dff331548c212b0da284c26d5356..bde5fe72f9c952209fbe56be8a9daf266de0ce0d 100644 (file)
 // Copyright 2001, 2002, 2003 Ximian, Inc (http://www.ximian.com)
 // Copyright 2004-2008 Novell, Inc
 //
-//
-//  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.
-//
-//
+
 using System;
 using System.Collections;
 using System.Collections.Specialized;
@@ -201,7 +182,7 @@ namespace Mono.CSharp {
                protected MemberCoreArrayList instance_constructors;
 
                // Holds the list of fields
-               MemberCoreArrayList fields;
+               protected MemberCoreArrayList fields;
 
                // Holds a list of fields that have initializers
                protected ArrayList initialized_fields;
@@ -251,9 +232,7 @@ namespace Mono.CSharp {
 
                protected ArrayList type_bases;
 
-               bool members_resolved;
-               bool members_resolved_ok;
-               bool members_defined;
+               protected bool members_defined;
                bool members_defined_ok;
 
                // The interfaces we implement.
@@ -267,6 +246,7 @@ namespace Mono.CSharp {
 
                private bool seen_normal_indexers = false;
                private string indexer_name = DefaultIndexerName;
+               protected bool requires_delayed_unmanagedtype_check;
 
                private CachedMethods cached_method;
 
@@ -291,7 +271,7 @@ namespace Mono.CSharp {
 
                public bool AddMember (MemberCore symbol)
                {
-                       return AddToContainer (symbol, symbol.MemberName.MethodName);
+                       return AddToContainer (symbol, symbol.MemberName.Basename);
                }
 
                protected virtual bool AddMemberType (DeclSpace ds)
@@ -299,6 +279,11 @@ namespace Mono.CSharp {
                        return AddToContainer (ds, ds.Basename);
                }
 
+               protected virtual void RemoveMemberType (DeclSpace ds)
+               {
+                       RemoveFromContainer (ds.Basename);
+               }
+
                public void AddConstant (Const constant)
                {
                        if (!AddMember (constant))
@@ -336,8 +321,8 @@ namespace Mono.CSharp {
                                return AddTypeContainer (next_part);
 
                        if ((tc.ModFlags & Modifiers.PARTIAL) == 0) {
-                               Report.SymbolRelatedToPreviousError (tc);
-                               Error_MissingPartialModifier (next_part);
+                               Report.SymbolRelatedToPreviousError (next_part);
+                               Error_MissingPartialModifier (tc);
                        }
 
                        if (tc.Kind != next_part.Kind) {
@@ -380,6 +365,13 @@ namespace Mono.CSharp {
                        return tc;
                }
 
+               public virtual void RemoveTypeContainer (TypeContainer next_part)
+               {
+                       if (types != null)
+                               types.Remove (next_part);
+                       RemoveMemberType (next_part);
+               }
+               
                public void AddDelegate (Delegate d)
                {
                        if (!AddMemberType (d))
@@ -398,21 +390,25 @@ namespace Mono.CSharp {
                                ordered_member_list = new MemberCoreArrayList ();
                        }
 
-                       if(isexplicit) {
+                       if (isexplicit) {
+                               if (Kind == Kind.Interface) {
+                                       Report.Error (541, mc.Location,
+                                               "`{0}': explicit interface declaration can only be declared in a class or struct",
+                                               mc.GetSignatureForError ());
+                               }
+
                                ordered_explicit_member_list.Add (mc);
                                alist.Insert (0, mc);
-                       } 
-                       else {
+                       } else {
                                ordered_member_list.Add (mc);
                                alist.Add (mc);
                        }
 
                }
                
-               public void AddMethod (Method method)
+               public void AddMethod (MethodOrOperator method)
                {
-                       MemberName mn = method.MemberName;
-                       if (!AddToContainer (method, mn.IsGeneric ? mn.Basename : mn.MethodName))
+                       if (!AddToContainer (method, method.MemberName.Basename))
                                return;
                        
                        if (methods == null)
@@ -424,34 +420,14 @@ namespace Mono.CSharp {
                                AddMemberToList (method, methods, false);
                }
 
-               //
-               // Do not use this method: use AddMethod.
-               //
-               // This is only used by iterators.
-               //
-               public void AppendMethod (Method method)
-               {
-                       if (!AddMember (method))
-                               return;
-
-                       if (methods == null)
-                               methods = new MemberCoreArrayList ();
-
-                       AddMemberToList (method, methods, false);
-               }
-
                public void AddConstructor (Constructor c)
                {
-                       if (c.Name != MemberName.Name) {
-                               Report.Error (1520, c.Location, "Class, struct, or interface method must have a return type");
-                       }
-
                        bool is_static = (c.ModFlags & Modifiers.STATIC) != 0;
                        if (!AddToContainer (c, is_static ?
                                ConstructorBuilder.ConstructorName : ConstructorBuilder.TypeConstructorName))
                                return;
                        
-                       if (is_static && c.Parameters.Empty){
+                       if (is_static && c.Parameters.IsEmpty){
                                if (default_static_constructor != null) {
                                    Report.SymbolRelatedToPreviousError (default_static_constructor);
                                        Report.Error (111, c.Location,
@@ -462,7 +438,7 @@ namespace Mono.CSharp {
 
                                default_static_constructor = c;
                        } else {
-                               if (c.Parameters.Empty)
+                               if (c.Parameters.IsEmpty)
                                        default_constructor = c;
                                
                                if (instance_constructors == null)
@@ -604,12 +580,6 @@ namespace Mono.CSharp {
                        }
                }
 
-               public ArrayList CompilerGenerated {
-                       get {
-                               return compiler_generated;
-                       }
-               }
-
                protected Type BaseType {
                        get {
                                return TypeBuilder.BaseType;
@@ -698,19 +668,12 @@ namespace Mono.CSharp {
 
                public void ResolveFieldInitializers (EmitContext ec)
                {
-                       // Field initializers are tricky for partial classes. They have to
-                       // share same costructor (block) but they have they own resolve scope.
-                       DeclSpace orig = ec.DeclContainer;
-
                        if (partial_parts != null) {
                                foreach (TypeContainer part in partial_parts) {
-                                       ec.DeclContainer = part;
                                        part.DoResolveFieldInitializers (ec);
                                }
                        }
-                       ec.DeclContainer = PartialContainer;
                        DoResolveFieldInitializers (ec);
-                       ec.DeclContainer = orig; 
                }
 
                void DoResolveFieldInitializers (EmitContext ec)
@@ -719,28 +682,32 @@ namespace Mono.CSharp {
                                if (initialized_static_fields == null)
                                        return;
 
-                               bool has_complex_initializer = false;
-                               using (ec.Set (EmitContext.Flags.InFieldInitializer)) {
-                                       foreach (FieldInitializer fi in initialized_static_fields) {
-                                               fi.ResolveStatement (ec);
-                                               if (!fi.IsComplexInitializer)
-                                                       continue;
-
-                                               has_complex_initializer = true;
+                               bool has_complex_initializer = !RootContext.Optimize;
+                               int i;
+                               ExpressionStatement [] init = new ExpressionStatement [initialized_static_fields.Count];
+                               for (i = 0; i < initialized_static_fields.Count; ++i) {
+                                       FieldInitializer fi = (FieldInitializer) initialized_static_fields [i];
+                                       ExpressionStatement s = fi.ResolveStatement (ec);
+                                       if (s == null) {
+                                               s = EmptyExpressionStatement.Instance;
+                                       } else if (fi.IsComplexInitializer) {
+                                               has_complex_initializer |= true;
                                        }
 
+                                       init [i] = s;
+                               }
+
+                               for (i = 0; i < initialized_static_fields.Count; ++i) {
+                                       FieldInitializer fi = (FieldInitializer) initialized_static_fields [i];
+                                       //
                                        // Need special check to not optimize code like this
                                        // static int a = b = 5;
                                        // static int b = 0;
-                                       if (!has_complex_initializer && RootContext.Optimize) {
-                                               for (int i = 0; i < initialized_static_fields.Count; ++i) {
-                                                       FieldInitializer fi = (FieldInitializer) initialized_static_fields [i];
-                                                       if (fi.IsDefaultInitializer) {
-                                                               initialized_static_fields.RemoveAt (i);
-                                                               --i;
-                                                       }
-                                               }
-                                       }
+                                       //
+                                       if (!has_complex_initializer && fi.IsDefaultInitializer)
+                                               continue;
+
+                                       ec.CurrentBlock.AddScopeStatement (new StatementExpression (init [i]));
                                }
 
                                return;
@@ -749,16 +716,19 @@ namespace Mono.CSharp {
                        if (initialized_fields == null)
                                return;
 
-                       using (ec.Set (EmitContext.Flags.InFieldInitializer)) {
-                               for (int i = 0; i < initialized_fields.Count; ++i) {
-                                       FieldInitializer fi = (FieldInitializer) initialized_fields [i];
-                                       fi.ResolveStatement (ec);
-                                       if (fi.IsDefaultInitializer && RootContext.Optimize) {
-                                               // Field is re-initialized to its default value => removed
-                                               initialized_fields.RemoveAt (i);
-                                               --i;
-                                       }
-                               }
+                       for (int i = 0; i < initialized_fields.Count; ++i) {
+                               FieldInitializer fi = (FieldInitializer) initialized_fields [i];
+                               ExpressionStatement s = fi.ResolveStatement (ec);
+                               if (s == null)
+                                       continue;
+
+                               //
+                               // Field is re-initialized to its default value => removed
+                               //
+                               if (fi.IsDefaultInitializer && RootContext.Optimize)
+                                       continue;
+
+                               ec.CurrentBlock.AddScopeStatement (new StatementExpression (s));
                        }
                }
 
@@ -820,45 +790,77 @@ namespace Mono.CSharp {
                        ((TypeContainer) part).type_bases = bases;
                }
 
-               TypeExpr[] GetNormalBases (out TypeExpr base_class)
+               /// <summary>
+               ///   This function computes the Base class and also the
+               ///   list of interfaces that the class or struct @c implements.
+               ///   
+               ///   The return value is an array (might be null) of
+               ///   interfaces implemented (as Types).
+               ///   
+               ///   The @base_class argument is set to the base object or null
+               ///   if this is `System.Object'. 
+               /// </summary>
+               protected virtual TypeExpr[] ResolveBaseTypes (out TypeExpr base_class)
                {
                        base_class = null;
                        if (type_bases == null)
                                return null;
 
                        int count = type_bases.Count;
-                       int start = 0, i, j;
+                       TypeExpr [] ifaces = null;
+                       for (int i = 0, j = 0; i < count; i++){
+                               FullNamedExpression fne = (FullNamedExpression) type_bases [i];
 
-                       if (Kind == Kind.Class){
-                               TypeExpr name = ((Expression) type_bases [0]).ResolveAsBaseTerminal (this, false);
+                               //
+                               // Standard ResolveAsTypeTerminal cannot be used in this case because
+                               // it does ObsoleteAttribute and constraint checks which require
+                               // base type to be set
+                               //
+                               TypeExpr fne_resolved = fne.ResolveAsBaseTerminal (this, false);
+                               if (fne_resolved == null)
+                                       continue;
 
-                               if (name == null){
-                                       return null;
+                               if (i == 0 && Kind == Kind.Class && !fne_resolved.Type.IsInterface) {
+                                       base_class = fne_resolved;
+                                       continue;
                                }
 
-                               if (!name.IsInterface) {
-                                       // base_class could be a class, struct, enum, delegate.
-                                       // This is validated in GetClassBases.
-                                       base_class = name;
-                                       start = 1;
-                               }
-                       }
+                               if (ifaces == null)
+                                       ifaces = new TypeExpr [count - i];
+
+                               if (fne_resolved.Type.IsInterface) {
+                                       for (int ii = 0; ii < j; ++ii) {
+                                               if (TypeManager.IsEqual (fne_resolved.Type, ifaces [ii].Type)) {
+                                                       Report.Error (528, Location, "`{0}' is already listed in interface list",
+                                                               fne_resolved.GetSignatureForError ());
+                                                       break;
+                                               }
+                                       }
 
-                       TypeExpr [] ifaces = new TypeExpr [count-start];
-                       
-                       for (i = start, j = 0; i < count; i++, j++){
-                               TypeExpr resolved = ((Expression) type_bases [i]).ResolveAsBaseTerminal (this, false);
-                               if (resolved == null) {
-                                       return null;
+                                       if (Kind == Kind.Interface && !fne_resolved.AsAccessible (this)) {
+                                               Report.Error (61, fne.Location,
+                                                       "Inconsistent accessibility: base interface `{0}' is less accessible than interface `{1}'",
+                                                       fne_resolved.GetSignatureForError (), GetSignatureForError ());
+                                       }
+                               } else {
+                                       Report.SymbolRelatedToPreviousError (fne_resolved.Type);
+                                       if (Kind != Kind.Class) {
+                                               Report.Error (527, fne.Location, "Type `{0}' in interface list is not an interface", fne_resolved.GetSignatureForError ());
+                                       } else if (base_class != null)
+                                               Report.Error (1721, fne.Location, "`{0}': Classes cannot have multiple base classes (`{1}' and `{2}')",
+                                                       GetSignatureForError (), base_class.GetSignatureForError (), fne_resolved.GetSignatureForError ());
+                                       else {
+                                               Report.Error (1722, fne.Location, "`{0}': Base class `{1}' must be specified as first",
+                                                       GetSignatureForError (), fne_resolved.GetSignatureForError ());
+                                       }
                                }
-                               
-                               ifaces [j] = resolved;
+
+                               ifaces [j++] = fne_resolved;
                        }
 
-                       return ifaces.Length == 0 ? null : ifaces;
+                       return ifaces;
                }
 
-
                TypeExpr[] GetNormalPartialBases (ref TypeExpr base_class)
                {
                        ArrayList ifaces = new ArrayList (0);
@@ -867,7 +869,7 @@ namespace Mono.CSharp {
 
                        foreach (TypeContainer part in partial_parts) {
                                TypeExpr new_base_class;
-                               TypeExpr[] new_ifaces = part.GetClassBases (out new_base_class);
+                               TypeExpr[] new_ifaces = part.ResolveBaseTypes (out new_base_class);
                                if (new_base_class != TypeManager.system_object_expr) {
                                        if (base_class == TypeManager.system_object_expr)
                                                base_class = new_base_class;
@@ -900,65 +902,6 @@ namespace Mono.CSharp {
                        return (TypeExpr[])ifaces.ToArray (typeof (TypeExpr));
                }
 
-               /// <summary>
-               ///   This function computes the Base class and also the
-               ///   list of interfaces that the class or struct @c implements.
-               ///   
-               ///   The return value is an array (might be null) of
-               ///   interfaces implemented (as Types).
-               ///   
-               ///   The @base_class argument is set to the base object or null
-               ///   if this is `System.Object'. 
-               /// </summary>
-               public virtual TypeExpr [] GetClassBases (out TypeExpr base_class)
-               {
-                       TypeExpr[] ifaces = GetNormalBases (out base_class);
-
-                       if (ifaces == null)
-                               return null;
-
-                       int count = ifaces.Length;
-
-                       for (int i = 0; i < count; i++) {
-                               TypeExpr iface = (TypeExpr) ifaces [i];
-
-                               if (!iface.IsInterface) {
-                                       if (Kind != Kind.Class) {
-                                               // TODO: location of symbol related ....
-                                               Error_TypeInListIsNotInterface (Location, iface.GetSignatureForError ());
-                                       }
-                                       else if (base_class != null)
-                                               Report.Error (1721, Location, "`{0}': Classes cannot have multiple base classes (`{1}' and `{2}')",
-                                                       GetSignatureForError (), base_class.GetSignatureForError (), iface.GetSignatureForError ());
-                                       else {
-                                               Report.Error (1722, Location, "`{0}': Base class `{1}' must be specified as first",
-                                                       GetSignatureForError (), iface.GetSignatureForError ());
-                                       }
-                                       return null;
-                               }
-
-                               for (int x = 0; x < i; x++) {
-                                       if (iface.Equals (ifaces [x])) {
-                                               Report.Error (528, Location,
-                                                             "`{0}' is already listed in " +
-                                                             "interface list", iface.GetSignatureForError ());
-                                               return null;
-                                       }
-                               }
-
-                               if ((Kind == Kind.Interface) &&
-                                   !iface.AsAccessible (this)) {
-                                       Report.Error (61, Location,
-                                                     "Inconsistent accessibility: base " +
-                                                     "interface `{0}' is less accessible " +
-                                                     "than interface `{1}'", iface.GetSignatureForError (),
-                                                     Name);
-                                       return null;
-                               }
-                       }
-                       return ifaces;
-               }
-
                bool CheckGenericInterfaces (Type[] ifaces)
                {
 #if GMCS_SOURCE
@@ -991,11 +934,6 @@ namespace Mono.CSharp {
 
                bool error = false;
                
-               protected void Error_TypeInListIsNotInterface (Location loc, string type)
-               {
-                       Report.Error (527, loc, "Type `{0}' in interface list is not an interface", type);
-               }
-
                bool CreateTypeBuilder ()
                {
                        try {
@@ -1005,6 +943,11 @@ namespace Mono.CSharp {
                                else if (Kind == Kind.Enum)
                                        default_parent = TypeManager.enum_type;
 
+                               //
+                               // Sets .size to 1 for structs with no instance fields
+                               //
+                               int type_size = Kind == Kind.Struct && first_nonstatic_field == null ? 1 : 0;
+
                                if (IsTopLevel){
                                        if (TypeManager.NamespaceClash (Name, Location)) {
                                                return false;
@@ -1012,12 +955,12 @@ namespace Mono.CSharp {
 
                                        ModuleBuilder builder = CodeGen.Module.Builder;
                                        TypeBuilder = builder.DefineType (
-                                               Name, TypeAttr, default_parent, null);
+                                               Name, TypeAttr, default_parent, type_size);
                                } else {
                                        TypeBuilder builder = Parent.TypeBuilder;
 
                                        TypeBuilder = builder.DefineNestedType (
-                                               Basename, TypeAttr, default_parent, null);
+                                               Basename, TypeAttr, default_parent, type_size);
                                }
                        } catch (ArgumentException) {
                                Report.RuntimeMissingSupport (Location, "static classes");
@@ -1045,7 +988,7 @@ namespace Mono.CSharp {
 
                bool DefineBaseTypes ()
                {
-                       iface_exprs = GetClassBases (out base_type);
+                       iface_exprs = ResolveBaseTypes (out base_type);
                        if (partial_parts != null) {
                                iface_exprs = GetNormalPartialBases (ref base_type);
                        }
@@ -1063,22 +1006,11 @@ namespace Mono.CSharp {
                        if (!(this is CompilerGeneratedClass))
                                RootContext.RegisterOrder (this); 
 
-                       if (IsGeneric && base_type != null && TypeManager.IsAttributeType (base_type.Type)) {
-                               Report.Error (698, base_type.Location,
-                                             "A generic type cannot derive from `{0}' because it is an attribute class",
-                                             base_type.GetSignatureForError ());
-                               return false;
-                       }
-
                        if (!CheckRecursiveDefinition (this))
                                return false;
 
                        if (base_type != null && base_type.Type != null) {
                                TypeBuilder.SetParent (base_type.Type);
-
-                               ObsoleteAttribute obsolete_attr = AttributeTester.GetObsoleteAttribute (base_type.Type);
-                               if (obsolete_attr != null && !IsInObsoleteScope)
-                                       AttributeTester.Report_ObsoleteMessage (obsolete_attr, base_type.GetSignatureForError (), Location);
                        }
 
                        // add interfaces that were not added at type creation
@@ -1090,13 +1022,6 @@ namespace Mono.CSharp {
                                foreach (Type itype in ifaces)
                                        TypeBuilder.AddInterfaceImplementation (itype);
 
-                               foreach (TypeExpr ie in iface_exprs) {
-                                       ObsoleteAttribute oa = AttributeTester.GetObsoleteAttribute (ie.Type);
-                                       if ((oa != null) && !IsInObsoleteScope)
-                                               AttributeTester.Report_ObsoleteMessage (
-                                                       oa, ie.GetSignatureForError (), Location);
-                               }
-
                                if (!CheckGenericInterfaces (ifaces))
                                        return false;
 
@@ -1160,13 +1085,6 @@ namespace Mono.CSharp {
                                return null;
                        }
 
-                       if (!(this is CompilerGeneratedClass)) {
-                               if (!ResolveMembers ()) {
-                                       error = true;
-                                       return null;
-                               }
-                       }
-
                        if (!DefineNestedTypes ()) {
                                error = true;
                                return null;
@@ -1175,82 +1093,6 @@ namespace Mono.CSharp {
                        return TypeBuilder;
                }
 
-               public bool ResolveMembers ()
-               {
-                       if (members_resolved)
-                               return members_resolved_ok;
-
-                       members_resolved_ok = DoResolveMembers ();
-                       members_resolved = true;
-
-                       return members_resolved_ok;
-               }
-
-               protected virtual bool DoResolveMembers ()
-               {
-                       if (methods != null) {
-                               foreach (Method method in methods) {
-                                       if (!method.ResolveMembers ())
-                                               return false;
-                               }
-                       }
-
-                       if (instance_constructors != null) {
-                               foreach (Constructor c in instance_constructors) {
-                                       if (!c.ResolveMembers ())
-                                               return false;
-                               }
-                       }
-
-                       if (default_static_constructor != null) {
-                               if (!default_static_constructor.ResolveMembers ())
-                                       return false;
-                       }
-
-                       if (operators != null) {
-                               foreach (Operator o in operators) {
-                                       if (!o.ResolveMembers ())
-                                               return false;
-                               }
-                       }
-
-                       if (properties != null) {
-                               foreach (PropertyBase p in properties) {
-                                       if (!p.Get.IsDummy && !p.Get.ResolveMembers ())
-                                               return false;
-                                       if (!p.Set.IsDummy && !p.Set.ResolveMembers ())
-                                               return false;
-                               }
-                       }
-
-                       if (indexers != null) {
-                               foreach (PropertyBase p in indexers) {
-                                       if (!p.Get.IsDummy && !p.Get.ResolveMembers ())
-                                               return false;
-                                       if (!p.Set.IsDummy && !p.Set.ResolveMembers ())
-                                               return false;
-                               }
-                       }
-
-                       if (events != null) {
-                               foreach (Event e in events) {
-                                       if (!e.Add.ResolveMembers ())
-                                               return false;
-                                       if (!e.Remove.ResolveMembers ())
-                                               return false;
-                               }
-                       }
-
-                       if (compiler_generated != null) {
-                               foreach (CompilerGeneratedClass c in compiler_generated) {
-                                       if (c.DefineType () == null)
-                                               return false;
-                               }
-                       }
-
-                       return true;
-               }
-
                public override void SetParameterInfo (ArrayList constraints_list)
                {
                        base.SetParameterInfo (constraints_list);
@@ -1336,24 +1178,16 @@ namespace Mono.CSharp {
                                }
                        }
 
-                       current_type = new ConstructedType (TypeBuilder, TypeParameters, Location);
-
-                       foreach (TypeParameter type_param in TypeParameters)
-                               if (!type_param.CheckDependencies ()) {
-                                       error = true;
-                                       return false;
-                               }
-
-                       if (current_type != null) {
-                               current_type = current_type.ResolveAsTypeTerminal (this, false);
-                               if (current_type == null) {
-                                       error = true;
-                                       return false;
-                               }
-
-                               CurrentType = current_type.Type;
+                       // TODO: Very strange, why not simple make generic type from
+                       // current type parameters
+                       current_type = new GenericTypeExpr (this, Location);
+                       current_type = current_type.ResolveAsTypeTerminal (this, false);
+                       if (current_type == null) {
+                               error = true;
+                               return false;
                        }
 
+                       CurrentType = current_type.Type;
                        return true;
                }
 
@@ -1418,22 +1252,14 @@ namespace Mono.CSharp {
                        return true;
                }
 
-               public static void Error_KeywordNotAllowed (Location loc)
-               {
-                       Report.Error (1530, loc, "Keyword `new' is not allowed on namespace elements");
-               }
-
                /// <summary>
                ///   Populates our TypeBuilder with fields and methods
                /// </summary>
-               public override bool DefineMembers ()
+               public override bool Define ()
                {
                        if (members_defined)
                                return members_defined_ok;
 
-                       if (!base.DefineMembers ())
-                               return false;
-
                        members_defined_ok = DoDefineMembers ();
                        members_defined = true;
 
@@ -1444,14 +1270,23 @@ namespace Mono.CSharp {
                {
                        if (iface_exprs != null) {
                                foreach (TypeExpr iface in iface_exprs) {
-                                       ConstructedType ct = iface as ConstructedType;
+                                       ObsoleteAttribute oa = AttributeTester.GetObsoleteAttribute (iface.Type);
+                                       if ((oa != null) && !IsInObsoleteScope)
+                                               AttributeTester.Report_ObsoleteMessage (
+                                                       oa, iface.GetSignatureForError (), Location);
+
+                                       GenericTypeExpr ct = iface as GenericTypeExpr;
                                        if ((ct != null) && !ct.CheckConstraints (this))
                                                return false;
                                }
                        }
 
                        if (base_type != null) {
-                               ConstructedType ct = base_type as ConstructedType;
+                               ObsoleteAttribute obsolete_attr = AttributeTester.GetObsoleteAttribute (base_type.Type);
+                               if (obsolete_attr != null && !IsInObsoleteScope)
+                                       AttributeTester.Report_ObsoleteMessage (obsolete_attr, base_type.GetSignatureForError (), Location);
+
+                               GenericTypeExpr ct = base_type as GenericTypeExpr;
                                if ((ct != null) && !ct.CheckConstraints (this))
                                        return false;
                                
@@ -1497,6 +1332,14 @@ namespace Mono.CSharp {
 
                        if (Kind == Kind.Struct || Kind == Kind.Class) {
                                pending = PendingImplementation.GetPendingImplementations (this);
+
+                               if (requires_delayed_unmanagedtype_check) {
+                                       requires_delayed_unmanagedtype_check = false;
+                                       foreach (Field f in fields) {
+                                               if (f.MemberType != null && f.MemberType.IsPointer)
+                                                       TypeManager.VerifyUnManaged (f.MemberType, f.Location);
+                                       }
+                               }
                        }
                
                        //
@@ -1608,20 +1451,6 @@ namespace Mono.CSharp {
                        }
                }
 
-               public override bool Define ()
-               {
-                       CheckProtectedModifier ();
-
-                       if (compiler_generated != null) {
-                               foreach (CompilerGeneratedClass c in compiler_generated) {
-                                       if (!c.Define ())
-                                               return false;
-                               }
-                       }
-
-                       return true;
-               }
-
                public MemberInfo FindBaseMemberWithSameName (string name, bool ignore_methods)
                {
                        return BaseCache == null ? null : BaseCache.FindMemberWithSameName (name, ignore_methods, null);
@@ -1651,7 +1480,7 @@ namespace Mono.CSharp {
                {
                        ArrayList members = new ArrayList ();
 
-                       DefineMembers ();
+                       Define ();
 
                        if (methods != null) {
                                int len = methods.Count;
@@ -1718,6 +1547,11 @@ namespace Mono.CSharp {
                        set { caching_flags |= Flags.HasExplicitLayout; }
                }
 
+               public bool HasStructLayout {
+                       get { return (caching_flags & Flags.HasStructLayout) != 0; }
+                       set { caching_flags |= Flags.HasStructLayout; }
+               }
+
                //
                // Return the nested type with name @name.  Ensures that the nested type
                // is defined if necessary.  Do _not_ use this when you have a MemberCache handy.
@@ -1886,7 +1720,7 @@ namespace Mono.CSharp {
                                if (methods != null) {
                                        int len = methods.Count;
                                        for (int i = 0; i < len; i++) {
-                                               Method m = (Method) methods [i];
+                                               MethodOrOperator m = (MethodOrOperator) methods [i];
                                                
                                                if ((m.ModFlags & modflags) == 0)
                                                        continue;
@@ -2087,7 +1921,7 @@ namespace Mono.CSharp {
                                                if (cb != null && filter (cb, criteria) == true) {
                                                        if (members == null)
                                                                members = new ArrayList ();
-                                                       
+
                                                        members.Add (cb);
                                                }
                                        }
@@ -2215,6 +2049,12 @@ namespace Mono.CSharp {
                                                
                                                if ((f.caching_flags & Flags.IsAssigned) != 0)
                                                        continue;
+
+                                               //
+                                               // Don't be pendatic over serializable attributes
+                                               //
+                                               if (f.OptAttributes != null || PartialContainer.HasStructLayout)
+                                                       continue;
                                                
                                                Constant c = New.Constantify (f.MemberType);
                                                Report.Warning (649, 4, f.Location, "Field `{0}' is never assigned to, and will always have its default value `{1}'",
@@ -2247,7 +2087,7 @@ namespace Mono.CSharp {
                                        has_compliant_args = c.HasCompliantArgs;
                                }
                                if (!has_compliant_args)
-                                       Report.Error (3015, Location, "`{0}' has no accessible constructors which use only CLS-compliant types", GetSignatureForError ());
+                                       Report.Warning (3015, 1, Location, "`{0}' has no accessible constructors which use only CLS-compliant types", GetSignatureForError ());
                        } else {
                                foreach (Constructor c in instance_constructors) {
                                        try {
@@ -2269,37 +2109,6 @@ namespace Mono.CSharp {
                        if (OptAttributes != null)
                                OptAttributes.Emit ();
 
-                       //
-                       // Structs with no fields need to have at least one byte.
-                       // The right thing would be to set the PackingSize in a DefineType
-                       // but there are no functions that allow interfaces *and* the size to
-                       // be specified.
-                       //
-
-                       if (Kind == Kind.Struct && first_nonstatic_field == null){
-                               FieldBuilder fb = TypeBuilder.DefineField ("$PRIVATE$", TypeManager.byte_type,
-                                                                          FieldAttributes.Private);
-
-                               if (HasExplicitLayout){
-                                       object [] ctor_args = new object [] { 0 };
-
-                                       if (TypeManager.field_offset_attribute_ctor == null) {
-                                               // Type is optional
-                                               if (TypeManager.field_offset_attribute_type == null) {
-                                                       TypeManager.field_offset_attribute_type = TypeManager.CoreLookupType (
-                                                               "System.Runtime.InteropServices", "FieldOffsetAttribute", Kind.Class, true);
-                                               }
-
-                                               TypeManager.field_offset_attribute_ctor = TypeManager.GetPredefinedConstructor (
-                                                       TypeManager.field_offset_attribute_type, Location, TypeManager.int32_type);
-                                       }
-                               
-                                       CustomAttributeBuilder cba = new CustomAttributeBuilder (
-                                               TypeManager.field_offset_attribute_ctor, ctor_args);
-                                       fb.SetCustomAttribute (cba);
-                               }
-                       }
-
                        Emit ();
 
                        EmitConstructors ();
@@ -2312,11 +2121,6 @@ namespace Mono.CSharp {
                        if (default_static_constructor != null)
                                default_static_constructor.Emit ();
                        
-                       if (methods != null){
-                               for (int i = 0; i < methods.Count; ++i)
-                                       ((Method)methods[i]).Emit ();
-                       }
-
                        if (operators != null)
                                foreach (Operator o in operators)
                                        o.Emit ();
@@ -2330,16 +2134,21 @@ namespace Mono.CSharp {
                                        indx.Emit ();
                                EmitIndexerName ();
                        }
-                       
-                       if (fields != null)
-                               foreach (FieldBase f in fields)
-                                       f.Emit ();
 
                        if (events != null){
                                foreach (Event e in Events)
                                        e.Emit ();
                        }
 
+                       if (methods != null) {
+                               for (int i = 0; i < methods.Count; ++i)
+                                       ((MethodOrOperator) methods [i]).Emit ();
+                       }
+                       
+                       if (fields != null)
+                               foreach (FieldBase f in fields)
+                                       f.Emit ();
+
                        if (delegates != null) {
                                foreach (Delegate d in Delegates) {
                                        d.Emit ();
@@ -2347,19 +2156,14 @@ namespace Mono.CSharp {
                        }
 
                        if (pending != null)
-                               if (pending.VerifyPendingMethods ())
-                                       return;
+                               pending.VerifyPendingMethods ();
 
                        if (Report.Errors > 0)
                                return;
 
                        if (compiler_generated != null) {
-                               foreach (CompilerGeneratedClass c in compiler_generated) {
-                                       if (!c.DefineMembers ())
-                                               throw new InternalErrorException ();
-                               }
-                               foreach (CompilerGeneratedClass c in compiler_generated)
-                                       c.EmitType ();
+                               for (int i = 0; i < compiler_generated.Count; ++i)
+                                       ((CompilerGeneratedClass) compiler_generated [i]).EmitType ();
                        }
                }
                
@@ -2395,8 +2199,8 @@ namespace Mono.CSharp {
                                foreach (Delegate d in Delegates)
                                        d.CloseType ();
 
-                       if (CompilerGenerated != null)
-                               foreach (CompilerGeneratedClass c in CompilerGenerated)
+                       if (compiler_generated != null)
+                               foreach (CompilerGeneratedClass c in compiler_generated)
                                        c.CloseType ();
                        
                        types = null;
@@ -2517,7 +2321,7 @@ namespace Mono.CSharp {
 
                        Type base_type = TypeBuilder.BaseType;
                        if (base_type != null && !AttributeTester.IsClsCompliant (base_type)) {
-                               Report.Error (3009, Location, "`{0}': base type `{1}' is not CLS-compliant", GetSignatureForError (), TypeManager.CSharpName (base_type));
+                               Report.Warning (3009, 1, Location, "`{0}': base type `{1}' is not CLS-compliant", GetSignatureForError (), TypeManager.CSharpName (base_type));
                        }
                        return true;
                }
@@ -2561,11 +2365,8 @@ namespace Mono.CSharp {
                                } else {
                                        Report.SymbolRelatedToPreviousError ((MemberCore) found);
                                }
-#if GMCS_SOURCE
+
                                Report.Warning (3005, 1, mc.Location, "Identifier `{0}' differing only in case is not CLS-compliant", mc.GetSignatureForError ());
-#else
-                               Report.Error (3005, mc.Location, "Identifier `{0}' differing only in case is not CLS-compliant", mc.GetSignatureForError ());
-#endif
                        }
                }
 
@@ -2716,11 +2517,11 @@ namespace Mono.CSharp {
 
                protected override bool AddToContainer (MemberCore symbol, string name)
                {
-                       if (name == MemberName.Name) {
+                       if (name == MemberName.Name && symbol.MemberName.Left == null) {
                                if (symbol is TypeParameter) {
                                        Report.Error (694, symbol.Location,
-                                                     "Type parameter `{0}' has same name as " +
-                                                     "containing type, or method", name);
+                                               "Type parameter `{0}' has same name as containing type, or method",
+                                               symbol.GetSignatureForError ());
                                        return false;
                                }
 
@@ -2757,8 +2558,11 @@ namespace Mono.CSharp {
                                return;
                        }
 
-                       if (a.Type == TypeManager.struct_layout_attribute_type && a.GetLayoutKindValue () == LayoutKind.Explicit) {
-                               HasExplicitLayout = true;
+                       if (a.Type == TypeManager.struct_layout_attribute_type) {
+                               PartialContainer.HasStructLayout = true;
+
+                               if (a.GetLayoutKindValue () == LayoutKind.Explicit)
+                                       PartialContainer.HasExplicitLayout = true;
                        }
 
                        base.ApplyAttributeBuilder (a, cb);
@@ -2781,27 +2585,33 @@ namespace Mono.CSharp {
                        }
 
                        Constructor c = new Constructor (this, MemberName.Name, mods,
-                               Parameters.EmptyReadOnlyParameters,
+                               null, Parameters.EmptyReadOnlyParameters,
                                new GeneratedBaseInitializer (Location),
                                Location);
                        
                        AddConstructor (c);
-                       c.Block = new ToplevelBlock (null, Location);
+                       c.Block = new ToplevelBlock (Parameters.EmptyReadOnlyParameters, Location);
                }
 
                public override bool Define ()
                {
-                       if (default_static_constructor == null && PartialContainer.HasStaticFieldInitializer)
-                               DefineDefaultConstructor (true);
+                       CheckProtectedModifier ();
+
+                       base.Define ();
 
                        if (default_static_constructor != null)
                                default_static_constructor.Define ();
 
-                       return base.Define ();
+                       return true;
                }
 
                public override void Emit ()
                {
+                       if (default_static_constructor == null && PartialContainer.HasStaticFieldInitializer) {
+                               DefineDefaultConstructor (true);
+                               default_static_constructor.Define ();
+                       }
+
                        base.Emit ();
 
                        if (declarative_security != null) {
@@ -2887,7 +2697,7 @@ namespace Mono.CSharp {
                                return;
                        }
 
-                       if (AttributeTester.IsAttributeExcluded (a.Type))
+                       if (AttributeTester.IsAttributeExcluded (a.Type, Location))
                                return;
 
                        base.ApplyAttributeBuilder (a, cb);
@@ -2920,11 +2730,6 @@ namespace Mono.CSharp {
                                        continue;
                                }
 
-                               if ((m.ModFlags & Modifiers.PROTECTED) != 0) {
-                                       m.CheckProtectedModifier ();
-                                       continue;
-                               }
-
                                if (m is Indexer) {
                                        Report.Error (720, m.Location, "`{0}': cannot declare indexers in a static class", m.GetSignatureForError ());
                                        continue;
@@ -2950,19 +2755,17 @@ namespace Mono.CSharp {
                        base.DefineContainerMembers (list);
                }
 
-               public override TypeBuilder DefineType ()
+               public override bool Define ()
                {
                        if ((ModFlags & Modifiers.ABSTRACT) == Modifiers.ABSTRACT && (ModFlags & (Modifiers.SEALED | Modifiers.STATIC)) != 0) {
                                Report.Error (418, Location, "`{0}': an abstract class cannot be sealed or static", GetSignatureForError ());
-                               return null;
                        }
 
                        if ((ModFlags & (Modifiers.SEALED | Modifiers.STATIC)) == (Modifiers.SEALED | Modifiers.STATIC)) {
                                Report.Error (441, Location, "`{0}': a class cannot be both static and sealed", GetSignatureForError ());
-                               return null;
                        }
 
-                       return base.DefineType ();
+                       return base.Define ();
                }
 
                protected override bool DoDefineMembers ()
@@ -2983,9 +2786,9 @@ namespace Mono.CSharp {
 #endif                 
                }
 
-               public override TypeExpr[] GetClassBases (out TypeExpr base_class)
+               protected override TypeExpr[] ResolveBaseTypes (out TypeExpr base_class)
                {
-                       TypeExpr[] ifaces = base.GetClassBases (out base_class);
+                       TypeExpr[] ifaces = base.ResolveBaseTypes (out base_class);
 
                        if (base_class == null) {
                                if (RootContext.StdLib)
@@ -3001,6 +2804,12 @@ namespace Mono.CSharp {
                                        return ifaces;
                                }
 
+                               if (IsGeneric && TypeManager.IsAttributeType (base_class.Type)) {
+                                       Report.Error (698, base_class.Location,
+                                               "A generic type cannot derive from `{0}' because it is an attribute class",
+                                               base_class.GetSignatureForError ());
+                               }
+
                                if (base_class.IsSealed){
                                        Report.SymbolRelatedToPreviousError (base_class.Type);
                                        if (base_class.Type.IsAbstract) {
@@ -3065,7 +2874,7 @@ namespace Mono.CSharp {
 
                        foreach (Attribute a in attrs) {
                                string condition = a.GetConditionalAttributeValue ();
-                               if (RootContext.AllDefines.Contains (condition))
+                               if (Location.CompilationUnit.IsConditionalDefined (condition))
                                        return false;
                        }
 
@@ -3121,21 +2930,68 @@ namespace Mono.CSharp {
                        this.ModFlags |= Modifiers.SEALED;
                }
 
+               public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+               {
+                       base.ApplyAttributeBuilder (a, cb);
+
+                       //
+                       // When struct constains fixed fixed and struct layout has explicitly
+                       // set CharSet, its value has to be propagated to compiler generated
+                       // fixed field types
+                       //
+                       if (a.Type == TypeManager.struct_layout_attribute_type && Fields != null && a.HasField ("CharSet")) {
+                               for (int i = 0; i < Fields.Count; ++i) {
+                                       FixedField ff = Fields [i] as FixedField;
+                                       if (ff != null)
+                                               ff.SetCharSet (TypeBuilder.Attributes);
+                               }
+                       }
+               }
+
                public override AttributeTargets AttributeTargets {
                        get {
                                return AttributeTargets.Struct;
                        }
                }
 
-               const TypeAttributes DefaultTypeAttributes =
-                       TypeAttributes.SequentialLayout |
-                       TypeAttributes.Sealed |
-                       TypeAttributes.BeforeFieldInit;
+               public override bool IsUnmanagedType ()
+               {
+                       if (fields == null)
+                               return true;
+
+                       if (requires_delayed_unmanagedtype_check)
+                               return true;
 
+                       foreach (FieldBase f in fields) {
+                               if ((f.ModFlags & Modifiers.STATIC) != 0)
+                                       continue;
 
-               public override TypeExpr[] GetClassBases (out TypeExpr base_class)
+                               // It can happen when recursive unmanaged types are defined
+                               // struct S { S* s; }
+                               Type mt = f.MemberType;
+                               if (mt == null) {
+                                       requires_delayed_unmanagedtype_check = true;
+                                       return true;
+                               }
+
+                               // TODO: Remove when pointer types are under mcs control
+                               while (mt.IsPointer)
+                                       mt = TypeManager.GetElementType (mt);
+                               if (TypeManager.IsEqual (mt, TypeBuilder))
+                                       continue;
+
+                               if (TypeManager.IsUnmanagedType (mt))
+                                       continue;
+
+                               return false;
+                       }
+
+                       return true;
+               }
+
+               protected override TypeExpr[] ResolveBaseTypes (out TypeExpr base_class)
                {
-                       TypeExpr[] ifaces = base.GetClassBases (out base_class);
+                       TypeExpr[] ifaces = base.ResolveBaseTypes (out base_class);
                        //
                        // If we are compiling our runtime,
                        // and we are defining ValueType, then our
@@ -3158,6 +3014,11 @@ namespace Mono.CSharp {
                //
                protected override TypeAttributes TypeAttr {
                        get {
+                               const TypeAttributes DefaultTypeAttributes =
+                                       TypeAttributes.SequentialLayout |
+                                       TypeAttributes.Sealed |
+                                       TypeAttributes.BeforeFieldInit;
+
                                return base.TypeAttr | DefaultTypeAttributes;
                        }
                }
@@ -3221,13 +3082,13 @@ namespace Mono.CSharp {
                        }
                }
 
-               const TypeAttributes DefaultTypeAttributes =
-                       TypeAttributes.AutoLayout |
-                       TypeAttributes.Abstract |
-                       TypeAttributes.Interface;
-
                protected override TypeAttributes TypeAttr {
                        get {
+                               const TypeAttributes DefaultTypeAttributes =
+                                       TypeAttributes.AutoLayout |
+                                       TypeAttributes.Abstract |
+                                       TypeAttributes.Interface;
+
                                return base.TypeAttr | DefaultTypeAttributes;
                        }
                }
@@ -3257,9 +3118,9 @@ namespace Mono.CSharp {
        public abstract class PropertyBasedMember : InterfaceMemberBase
        {
                public PropertyBasedMember (DeclSpace parent, GenericMethod generic,
-                       FullNamedExpression type, int mod, int allowed_mod, bool is_iface,
+                       FullNamedExpression type, int mod, int allowed_mod,
                        MemberName name, Attributes attrs)
-                       : base (parent, generic, type, mod, allowed_mod, is_iface, name, attrs)
+                       : base (parent, generic, type, mod, allowed_mod, name, attrs)
                {
                }
 
@@ -3269,7 +3130,7 @@ namespace Mono.CSharp {
                                return false;
 
                        if (!AttributeTester.IsClsCompliant (MemberType)) {
-                               Report.Error (3003, Location, "Type of `{0}' is not CLS-compliant",
+                               Report.Warning (3003, 1, Location, "Type of `{0}' is not CLS-compliant",
                                        GetSignatureForError ());
                        }
                        return true;
@@ -3284,9 +3145,9 @@ namespace Mono.CSharp {
                protected ToplevelBlock block;
 
                public MethodCore (DeclSpace parent, GenericMethod generic,
-                       FullNamedExpression type, int mod, int allowed_mod, bool is_iface,
+                       FullNamedExpression type, int mod, int allowed_mod,
                        MemberName name, Attributes attrs, Parameters parameters)
-                       : base (parent, generic, type, mod, allowed_mod, is_iface, name, attrs)
+                       : base (parent, generic, type, mod, allowed_mod, name, attrs)
                {
                        Parameters = parameters;
                }
@@ -3323,23 +3184,7 @@ namespace Mono.CSharp {
                        if (!DefineParameters (Parameters))
                                return false;
 
-                       if ((caching_flags & Flags.MethodOverloadsExist) != 0) {
-                               if (!Parent.MemberCache.CheckExistingMembersOverloads (this,
-                                       MemberName.IsGeneric ? MemberName.Basename : MemberName.MethodName, Parameters))
-                                       return false;
-
-                               // TODO: Find a better way how to check reserved accessors collision
-                               Method m = this as Method;
-                               if (m != null) {
-                                       if (!m.CheckForDuplications ())
-                                               return false;
-                               }
-                       }
-
-                       if (!base.CheckBase ())
-                               return false;
-
-                       return true;
+                       return base.CheckBase ();
                }
 
                //
@@ -3378,12 +3223,7 @@ namespace Mono.CSharp {
                                return true;
                        }
 
-                       return false;
-               }
-
-               public virtual void SetYields ()
-               {
-                       ModFlags |= Modifiers.METHOD_YIELDS;
+                       return base.EnableOverloadChecks (overload);
                }
 
                protected override bool VerifyClsCompliance ()
@@ -3392,11 +3232,11 @@ namespace Mono.CSharp {
                                return false;
 
                        if (Parameters.HasArglist) {
-                               Report.Error (3000, Location, "Methods with variable arguments are not CLS-compliant");
+                               Report.Warning (3000, 1, Location, "Methods with variable arguments are not CLS-compliant");
                        }
 
                        if (!AttributeTester.IsClsCompliant (MemberType)) {
-                               Report.Error (3002, Location, "Return type of `{0}' is not CLS-compliant",
+                               Report.Warning (3002, 1, Location, "Return type of `{0}' is not CLS-compliant",
                                        GetSignatureForError ());
                        }
 
@@ -3433,12 +3273,12 @@ namespace Mono.CSharp {
                public MethodAttributes flags;
 
                public InterfaceMemberBase (DeclSpace parent, GenericMethod generic,
-                                  FullNamedExpression type, int mod, int allowed_mod, bool is_iface,
+                                  FullNamedExpression type, int mod, int allowed_mod,
                                   MemberName name, Attributes attrs)
                        : base (parent, generic, type, mod, allowed_mod, Modifiers.PRIVATE,
                                name, attrs)
                {
-                       IsInterface = is_iface;
+                       IsInterface = parent.PartialContainer.Kind == Kind.Interface;
                        IsExplicitImpl = (MemberName.Left != null);
                        explicit_mod_flags = mod;
                }
@@ -3447,6 +3287,9 @@ namespace Mono.CSharp {
                {
                        if (!base.CheckBase ())
                                return false;
+
+                       if ((caching_flags & Flags.MethodOverloadsExist) != 0)
+                               CheckForDuplications ();
                        
                        if (IsExplicitImpl)
                                return true;
@@ -3511,7 +3354,7 @@ namespace Mono.CSharp {
                        }
 
                        if ((ModFlags & Modifiers.NEW) == 0) {
-                               if (this is Method && conflict_symbol is MethodBase)
+                               if (this is MethodOrOperator && conflict_symbol.MemberType == MemberTypes.Method)
                                        return true;
 
                                Report.SymbolRelatedToPreviousError (conflict_symbol);
@@ -3522,6 +3365,12 @@ namespace Mono.CSharp {
                        return true;
                }
 
+               protected virtual bool CheckForDuplications ()
+               {
+                       return Parent.MemberCache.CheckExistingMembersOverloads (
+                               this, GetFullName (MemberName), Parameters.EmptyReadOnlyParameters);
+               }
+
                //
                // Performs various checks on the MethodInfo `mb' regarding the modifier flags
                // that have been defined.
@@ -3535,6 +3384,7 @@ namespace Mono.CSharp {
 
                        if ((ModFlags & Modifiers.OVERRIDE) != 0){
                                if (!(base_method.IsAbstract || base_method.IsVirtual)){
+                                       Report.SymbolRelatedToPreviousError (base_method);
                                        Report.Error (506, Location,
                                                "`{0}': cannot override inherited member `{1}' because it is not marked virtual, abstract or override",
                                                 GetSignatureForError (), TypeManager.CSharpSignature (base_method));
@@ -3575,7 +3425,7 @@ namespace Mono.CSharp {
                        }
 
                        if ((ModFlags & Modifiers.NEW) == 0) {
-                               if ((ModFlags & Modifiers.OVERRIDE) == 0 && Name != "Finalize") {
+                               if ((ModFlags & Modifiers.OVERRIDE) == 0) {
                                        ModFlags |= Modifiers.NEW;
                                        Report.SymbolRelatedToPreviousError (base_method);
                                        if (!IsInterface && (base_method.IsVirtual || base_method.IsAbstract)) {
@@ -3632,71 +3482,11 @@ namespace Mono.CSharp {
                        }
                }
 
-               protected bool DefineParameters (Parameters parameters)
-               {
-                       IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
-
-                       if (!parameters.Resolve (rc))
-                               return false;
-
-                       bool error = false;
-                       foreach (Parameter p in parameters.FixedParameters) {
-                               if (p.CheckAccessibility (this))
-                                       continue;
-
-                               Report.SymbolRelatedToPreviousError (p.ParameterType);
-                               if (this is Indexer)
-                                       Report.Error (55, Location,
-                                               "Inconsistent accessibility: parameter type `" +
-                                               TypeManager.CSharpName (p.ParameterType) + "' is less " +
-                                               "accessible than indexer `" + GetSignatureForError () + "'");
-                               else if (this is Operator)
-                                       Report.Error (57, Location,
-                                               "Inconsistent accessibility: parameter type `" +
-                                               TypeManager.CSharpName (p.ParameterType) + "' is less " +
-                                               "accessible than operator `" + GetSignatureForError () + "'");
-                               else
-                                       Report.Error (51, Location,
-                                               "Inconsistent accessibility: parameter type `{0}' is less accessible than method `{1}'",
-                                               TypeManager.CSharpName (p.ParameterType), GetSignatureForError ());
-                               error = true;
-                       }
-                       return !error;
-               }
-
-               protected override bool DoDefine()
-               {
-                       if (!base.DoDefine ())
-                               return false;
-
-                       if (IsExplicitImpl) {
-                               TypeExpr texpr = MemberName.Left.GetTypeExpression ().ResolveAsTypeTerminal (this, false);
-                               if (texpr == null)
-                                       return false;
-
-                               InterfaceType = texpr.Type;
-
-                               if (!InterfaceType.IsInterface) {
-                                       Report.Error (538, Location, "`{0}' in explicit interface declaration is not an interface", TypeManager.CSharpName (InterfaceType));
-                                       return false;
-                               }
-                               
-                               if (!Parent.PartialContainer.VerifyImplements (this))
-                                       return false;
-                               
-                       }
-                       return true;
-               }
-
-               protected virtual bool DoDefineBase ()
+               public override bool Define ()
                {
-                       if (Name == null)
-                               throw new InternalErrorException ();
-
                        if (IsInterface) {
-                               ModFlags = Modifiers.PUBLIC |
-                                       Modifiers.ABSTRACT |
-                                       Modifiers.VIRTUAL | (ModFlags & Modifiers.UNSAFE) | (ModFlags & Modifiers.NEW);
+                               ModFlags = Modifiers.PUBLIC | Modifiers.ABSTRACT |
+                                       Modifiers.VIRTUAL | (ModFlags & (Modifiers.UNSAFE | Modifiers.NEW));
 
                                flags = MethodAttributes.Public |
                                        MethodAttributes.Abstract |
@@ -3704,8 +3494,7 @@ namespace Mono.CSharp {
                                        MethodAttributes.NewSlot |
                                        MethodAttributes.Virtual;
                        } else {
-                               if (!Parent.PartialContainer.MethodModifiersValid (this))
-                                       return false;
+                               Parent.PartialContainer.MethodModifiersValid (this);
 
                                flags = Modifiers.MethodAttr (ModFlags);
                        }
@@ -3718,23 +3507,54 @@ namespace Mono.CSharp {
                                if ((ModFlags & Modifiers.PARTIAL) != 0) {
                                        Report.Error (754, Location, "A partial method `{0}' cannot explicitly implement an interface",
                                                GetSignatureForError ());
-                                       return false;
                                }
 
                                InterfaceType = iface_texpr.Type;
 
                                if (!InterfaceType.IsInterface) {
-                                       Report.Error (538, Location, "'{0}' in explicit interface declaration is not an interface", TypeManager.CSharpName (InterfaceType));
-                                       return false;
+                                       Report.SymbolRelatedToPreviousError (InterfaceType);
+                                       Report.Error (538, Location, "The type `{0}' in explicit interface declaration is not an interface",
+                                               TypeManager.CSharpName (InterfaceType));
+                               } else {
+                                       Parent.PartialContainer.VerifyImplements (this);
                                }
 
-                               if (!Parent.PartialContainer.VerifyImplements (this))
-                                       return false;
-                               
                                Modifiers.Check (Modifiers.AllowedExplicitImplFlags, explicit_mod_flags, 0, Location);
                        }
 
-                       return true;
+                       return base.Define ();
+               }
+
+               protected bool DefineParameters (Parameters parameters)
+               {
+                       IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
+
+                       if (!parameters.Resolve (rc))
+                               return false;
+
+                       bool error = false;
+                       for (int i = 0; i < parameters.Count; ++i) {
+                               Parameter p = parameters [i];
+                               if (p.CheckAccessibility (this))
+                                       continue;
+
+                               Type t = parameters.Types [i];
+                               Report.SymbolRelatedToPreviousError (t);
+                               if (this is Indexer)
+                                       Report.Error (55, Location,
+                                                     "Inconsistent accessibility: parameter type `{0}' is less accessible than indexer `{1}'",
+                                                     TypeManager.CSharpName (t), GetSignatureForError ());
+                               else if (this is Operator)
+                                       Report.Error (57, Location,
+                                                     "Inconsistent accessibility: parameter type `{0}' is less accessible than operator `{1}'",
+                                                     TypeManager.CSharpName (t), GetSignatureForError ());
+                               else
+                                       Report.Error (51, Location,
+                                               "Inconsistent accessibility: parameter type `{0}' is less accessible than method `{1}'",
+                                               TypeManager.CSharpName (t), GetSignatureForError ());
+                               error = true;
+                       }
+                       return !error;
                }
 
                public override void Emit()
@@ -3750,6 +3570,23 @@ namespace Mono.CSharp {
                        base.Emit ();
                }
 
+               public override bool EnableOverloadChecks (MemberCore overload)
+               {
+                       //
+                       // Two members can differ in their explicit interface
+                       // type parameter only
+                       //
+                       InterfaceMemberBase imb = overload as InterfaceMemberBase;
+                       if (imb != null && imb.IsExplicitImpl) {
+                               if (IsExplicitImpl) {
+                                       caching_flags |= Flags.MethodOverloadsExist;
+                               }
+                               return true;
+                       }
+
+                       return IsExplicitImpl;
+               }
+
                protected void Error_CannotChangeAccessModifiers (Location loc, MemberInfo base_method, MethodAttributes ma, string suffix)
                {
                        Report.SymbolRelatedToPreviousError (base_method);
@@ -3785,23 +3622,34 @@ namespace Mono.CSharp {
                        set { SetMemberName (new MemberName (MemberName.Left, value, Location)); }
                }
                
+               //
+               // Returns full metadata method name
+               //
                public string GetFullName (MemberName name)
                {
                        if (!IsExplicitImpl)
                                return name.Name;
 
-                       return InterfaceType.FullName.Replace ('+', '.') + "." + name.Name;
+                       //
+                       // When dealing with explicit members a full interface type
+                       // name is added to member name to avoid possible name conflicts
+                       //
+                       // We use CSharpName which gets us full name with benefit of
+                       // replacing predefined names which saves some space and name
+                       // is still unique
+                       //
+                       return TypeManager.CSharpName (InterfaceType) + "." + name.Name;
                }
 
                protected override bool VerifyClsCompliance ()
                {
                        if (!base.VerifyClsCompliance ()) {
                                if (IsInterface && HasClsCompliantAttribute && Parent.IsClsComplianceRequired ()) {
-                                       Report.Error (3010, Location, "`{0}': CLS-compliant interfaces must have only CLS-compliant members", GetSignatureForError ());
+                                       Report.Warning (3010, 1, Location, "`{0}': CLS-compliant interfaces must have only CLS-compliant members", GetSignatureForError ());
                                }
 
                                if ((ModFlags & Modifiers.ABSTRACT) != 0 && Parent.TypeBuilder.IsClass && IsExposedFromAssembly () && Parent.IsClsComplianceRequired ()) {
-                                       Report.Error (3011, Location, "`{0}': only CLS-compliant members can be abstract", GetSignatureForError ());
+                                       Report.Warning (3011, 1, Location, "`{0}': only CLS-compliant members can be abstract", GetSignatureForError ());
                                }
                                return false;
                        }
@@ -3826,15 +3674,12 @@ namespace Mono.CSharp {
                ListDictionary declarative_security;
                protected MethodData MethodData;
 
-               Iterator iterator;
-               ArrayList anonymous_methods;
-
                static string[] attribute_targets = new string [] { "method", "return" };
 
                protected MethodOrOperator (DeclSpace parent, GenericMethod generic, FullNamedExpression type, int mod,
-                               int allowed_mod, bool is_interface, MemberName name,
+                               int allowed_mod, MemberName name,
                                Attributes attrs, Parameters parameters)
-                       : base (parent, generic, type, mod, allowed_mod, is_interface, name,
+                       : base (parent, generic, type, mod, allowed_mod, name,
                                        attrs, parameters)
                {
                }
@@ -3878,83 +3723,51 @@ namespace Mono.CSharp {
                        }
                }
 
-               public virtual EmitContext CreateEmitContext (DeclSpace tc, ILGenerator ig)
+               protected override bool CheckForDuplications ()
                {
-                       return new EmitContext (
-                               this, tc, this.ds, Location, ig, MemberType, ModFlags, false);
+                       string name = GetFullName (MemberName);
+                       if (MemberName.IsGeneric)
+                               name = MemberName.MakeName (name, MemberName.TypeArguments);
+
+                       return Parent.MemberCache.CheckExistingMembersOverloads (this, name, Parameters);
                }
 
-               public void AddAnonymousMethod (AnonymousMethodExpression anonymous)
+               public virtual EmitContext CreateEmitContext (DeclSpace tc, ILGenerator ig)
                {
-                       if (anonymous_methods == null)
-                               anonymous_methods = new ArrayList ();
-                       anonymous_methods.Add (anonymous);
+                       return new EmitContext (
+                               this, tc, this.ds, Location, ig, MemberType, ModFlags, false);
                }
 
-               protected bool DefineGenericMethod ()
+               protected override bool ResolveMemberType ()
                {
-                       if (!DoDefineBase ())
-                               return false;
-
 #if GMCS_SOURCE
                        if (GenericMethod != null) {
-
-#if MS_COMPATIBLE
-                               MethodBuilder = Parent.TypeBuilder.DefineMethod (GetFullName (MemberName), flags); //, ReturnType, null);
-#else
                                MethodBuilder = Parent.TypeBuilder.DefineMethod (GetFullName (MemberName), flags);
-#endif
-
-                               if (!GenericMethod.Define (MethodBuilder, block))
+                               if (!GenericMethod.Define (this))
                                        return false;
                        }
 #endif
 
-                       return true;
-               }
-
-               public bool ResolveMembers ()
-               {
-                       if (!DefineGenericMethod ())
-                               return false;
-
-                       if ((ModFlags & Modifiers.METHOD_YIELDS) != 0) {
-                               iterator = Iterator.CreateIterator (this, Parent, GenericMethod, ModFlags);
-                               if (iterator == null)
-                                       return false;
-                       }
-
-                       if (anonymous_methods != null) {
-                               foreach (AnonymousMethodExpression ame in anonymous_methods) {
-                                       if (!ame.CreateAnonymousHelpers ())
-                                               return false;
-                               }
-                       }
-
-                       return true;
+                       return base.ResolveMemberType ();
                }
 
                public override bool Define ()
                {
-                       if (!DoDefine ())
+                       if (!base.Define ())
                                return false;
 
-                       if (!CheckAbstractAndExtern (block != null))
+                       if (!CheckBase ())
                                return false;
 
-                       if ((ModFlags & Modifiers.PARTIAL) != 0) {
-                               for (int i = 0; i < Parameters.Count; ++i ) {
-                                       if (Parameters.ParameterModifier (i) == Parameter.Modifier.OUT) {
-                                               Report.Error (752, Location, "`{0}': A partial method parameters cannot use `out' modifier",
-                                                       GetSignatureForError ());
-                                               return false;
-                                       }
-                               }
+                       if (block != null && block.IsIterator && !(Parent is IteratorStorey)) {
+                               //
+                               // Current method is turned into automatically generated
+                               // wrapper which creates an instance of iterator
+                               //
+                               Iterator.CreateIterator (this, Parent.PartialContainer, ModFlags);
+                               ModFlags |= Modifiers.DEBUGGER_HIDDEN;
                        }
 
-                       if (!CheckBase ())
-                               return false;
-                       
                        if (IsPartialDefinition) {
                                caching_flags &= ~Flags.Excluded_Undetected;
                                caching_flags |= Flags.Excluded;
@@ -3983,21 +3796,44 @@ namespace Mono.CSharp {
                        
                        Parent.MemberCache.AddMember (MethodBuilder, this);
 
+                       return true;
+               }
+
+               protected override void DoMemberTypeIndependentChecks ()
+               {
+                       base.DoMemberTypeIndependentChecks ();
+
+                       CheckAbstractAndExtern (block != null);
+
+                       if ((ModFlags & Modifiers.PARTIAL) != 0) {
+                               for (int i = 0; i < Parameters.Count; ++i) {
+                                       if (Parameters.FixedParameters[i].ModFlags == Parameter.Modifier.OUT) {
+                                               Report.Error (752, Location, "`{0}': A partial method parameters cannot use `out' modifier",
+                                                       GetSignatureForError ());
+                                               break;
+                                       }
+                               }
+                       }
+               }
+
+               protected override void DoMemberTypeDependentChecks ()
+               {
+                       base.DoMemberTypeDependentChecks ();
+
                        if (!TypeManager.IsGenericParameter (MemberType)) {
                                if (MemberType.IsAbstract && MemberType.IsSealed) {
                                        Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
-                                       return false;
                                }
                        }
-
-                       return true;
                }
 
                public override void Emit ()
                {
 #if GMCS_SOURCE                        
-                       if ((ModFlags & Modifiers.COMPILER_GENERATED) != 0)
+                       if ((ModFlags & Modifiers.COMPILER_GENERATED) != 0 && !Parent.IsCompilerGenerated)
                                MethodBuilder.SetCustomAttribute (TypeManager.GetCompilerGeneratedAttribute (Location));
+                       if ((ModFlags & Modifiers.DEBUGGER_HIDDEN) != 0)
+                               MethodBuilder.SetCustomAttribute (TypeManager.GetDebuggerHiddenAttribute (Location));
 #endif
                        if (OptAttributes != null)
                                OptAttributes.Emit ();
@@ -4008,7 +3844,13 @@ namespace Mono.CSharp {
                                }
                        }
 
+                       if (MethodData != null)
+                               MethodData.Emit (Parent);
+
                        base.Emit ();
+
+                       Block = null;
+                       MethodData = null;
                }
 
                protected void Error_ConditionalAttributeIsNotValid ()
@@ -4063,25 +3905,6 @@ namespace Mono.CSharp {
                        }
                }
 
-               public Iterator Iterator {
-                       get { return iterator; }
-               }
-
-               protected override bool CheckBase ()
-               {
-                       if (!base.CheckBase ())
-                               return false;
-
-                       // TODO: Destructor should derive from MethodCore
-                       if (base_method != null && (ModFlags & Modifiers.OVERRIDE) != 0 && Name == "Finalize" &&
-                               base_method.DeclaringType == TypeManager.object_type && !(this is Destructor)) {
-                               Report.Error (249, Location, "Do not override object.Finalize. Instead, provide a destructor");
-                               return false;
-                       }
-
-                       return true;
-               }
-
                /// <summary>
                /// Returns true if method has conditional attribute and the conditions is not defined (method is excluded).
                /// </summary>
@@ -4108,7 +3931,7 @@ namespace Mono.CSharp {
                                        if (condition == null)
                                                return false;
 
-                                       if (RootContext.AllDefines.Contains (condition))
+                                       if (Location.CompilationUnit.IsConditionalDefined (condition))
                                                return false;
                                }
 
@@ -4118,7 +3941,7 @@ namespace Mono.CSharp {
 
                        IMethodData md = TypeManager.GetMethod (TypeManager.DropGenericMethodArguments (base_method));
                        if (md == null) {
-                               if (AttributeTester.IsConditionalMethodExcluded (base_method)) {
+                               if (AttributeTester.IsConditionalMethodExcluded (base_method, Location)) {
                                        caching_flags |= Flags.Excluded;
                                        return true;
                                }
@@ -4147,13 +3970,11 @@ namespace Mono.CSharp {
 
        public class SourceMethod : IMethodDef
        {
-               DeclSpace parent;
                MethodBase method;
                SourceMethodBuilder builder;
 
                protected SourceMethod (DeclSpace parent, MethodBase method, ICompileUnit file)
                {
-                       this.parent = parent;
                        this.method = method;
                        
                        builder = SymbolWriter.OpenMethod (file, parent.NamespaceEntry.SymbolFileID, this);
@@ -4179,12 +4000,6 @@ namespace Mono.CSharp {
                        SymbolWriter.CloseMethod ();
                }
 
-               public void SetCompilerGenerated ()
-               {
-                       if (builder != null)
-                               builder.SetCompilerGenerated ();
-               }
-
                public void SetRealMethodName (string name)
                {
                        if (builder != null)
@@ -4210,7 +4025,7 @@ namespace Mono.CSharp {
                }
        }
 
-       public class Method : MethodOrOperator, IAnonymousHost {
+       public class Method : MethodOrOperator {
 
                /// <summary>
                ///   Modifiers allowed in a class declaration
@@ -4226,22 +4041,24 @@ namespace Mono.CSharp {
                        Modifiers.SEALED |
                        Modifiers.OVERRIDE |
                        Modifiers.ABSTRACT |
-                       Modifiers.UNSAFE |
-                       Modifiers.METHOD_YIELDS | 
+                       Modifiers.UNSAFE |
                        Modifiers.EXTERN;
 
                const int AllowedInterfaceModifiers =
                        Modifiers.NEW | Modifiers.UNSAFE;
 
-               //
-               // return_type can be "null" for VOID values.
-               //
                public Method (DeclSpace parent, GenericMethod generic,
-                              FullNamedExpression return_type, int mod, bool is_iface,
+                              FullNamedExpression return_type, int mod,
                               MemberName name, Parameters parameters, Attributes attrs)
                        : base (parent, generic, return_type, mod,
-                               is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
-                               is_iface, name, attrs, parameters)
+                               parent.PartialContainer.Kind == Kind.Interface ? AllowedInterfaceModifiers : AllowedModifiers,
+                               name, attrs, parameters)
+               {
+               }
+
+               protected Method (DeclSpace parent, FullNamedExpression return_type, int mod, int amod,
+                                       MemberName name, Parameters parameters, Attributes attrs)
+                       : base (parent, null, return_type, mod, amod, name, attrs, parameters)
                {
                }
                
@@ -4250,11 +4067,11 @@ namespace Mono.CSharp {
                        return base.GetSignatureForError () + Parameters.GetSignatureForError ();
                }
 
-               void Error_DuplicateEntryPoint (MethodInfo b, Location location)
+               static void Error_DuplicateEntryPoint (Method b)
                {
-                       Report.Error (17, location,
+                       Report.Error (17, b.Location,
                                "Program `{0}' has more than one entry point defined: `{1}'",
-                               CodeGen.FileName, TypeManager.CSharpSignature(b));
+                               CodeGen.FileName, b.GetSignatureForError ());
                }
 
                bool IsEntryPoint ()
@@ -4269,7 +4086,7 @@ namespace Mono.CSharp {
                        if (Parameters.Count > 1)
                                return false;
 
-                       Type t = Parameters.ParameterType (0);
+                       Type t = Parameters.Types [0];
                        return t.IsArray && t.GetArrayRank () == 1 &&
                                        TypeManager.GetElementType (t) == TypeManager.string_type &&
                                        (Parameters[0].ModFlags & ~Parameter.Modifier.PARAMS) == Parameter.Modifier.NONE;
@@ -4306,7 +4123,7 @@ namespace Mono.CSharp {
                                }
 
                                for (int i = 0; i < Parameters.Count; ++i) {
-                                       if ((Parameters.ParameterModifier (i) & Parameter.Modifier.OUTMASK) != 0) {
+                                       if (Parameters.FixedParameters [i].ModFlags == Parameter.Modifier.OUT) {
                                                Report.Error (685, Location, "Conditional method `{0}' cannot have an out parameter", GetSignatureForError ());
                                                return;
                                        }
@@ -4321,8 +4138,11 @@ namespace Mono.CSharp {
                        base.ApplyAttributeBuilder (a, cb);
                }
 
-               public bool CheckForDuplications ()
+               protected override bool CheckForDuplications ()
                {
+                       if (!base.CheckForDuplications ())
+                               return false;
+
                        ArrayList ar = Parent.PartialContainer.Properties;
                        if (ar != null) {
                                for (int i = 0; i < ar.Count; ++i) {
@@ -4344,28 +4164,40 @@ namespace Mono.CSharp {
                        return true;
                }
 
+               protected override bool CheckBase ()
+               {
+                       if (!base.CheckBase ())
+                               return false;
+
+                       if (base_method != null && (ModFlags & Modifiers.OVERRIDE) != 0 && Name == Destructor.MetadataName) {
+                               Report.Error (249, Location, "Do not override `{0}'. Use destructor syntax instead",
+                                       TypeManager.CSharpSignature (base_method));
+                       }
+
+                       return true;
+               }
+
                //
                // Creates the type
                //
                public override bool Define ()
                {
+                       if (type_name == TypeManager.system_void_expr && Parameters.IsEmpty && Name == Destructor.MetadataName) {
+                               Report.Warning (465, 1, Location, "Introducing `Finalize' method can interfere with destructor invocation. Did you intend to declare a destructor?");
+                       }
+
                        if (!base.Define ())
                                return false;
 
-                       if (RootContext.StdLib && (ReturnType == TypeManager.arg_iterator_type || ReturnType == TypeManager.typed_reference_type)) {
+                       if (RootContext.StdLib && TypeManager.IsSpecialType (ReturnType)) {
                                Error1599 (Location, ReturnType);
                                return false;
                        }
 
-                       if (ReturnType == TypeManager.void_type && ParameterTypes.Length == 0 && 
-                               Name == "Finalize" && !(this is Destructor)) {
-                               Report.Warning (465, 1, Location, "Introducing a 'Finalize' method can interfere with destructor invocation. Did you intend to declare a destructor?");
-                       }
-
                        if (base_method != null && (ModFlags & Modifiers.NEW) == 0) {
                                if (Parameters.Count == 1 && ParameterTypes [0] == TypeManager.object_type && Name == "Equals")
                                        Parent.PartialContainer.Mark_HasEquals ();
-                               else if (Parameters.Empty && Name == "GetHashCode")
+                               else if (Parameters.IsEmpty && Name == "GetHashCode")
                                        Parent.PartialContainer.Mark_HasGetHashCode ();
                        }
 
@@ -4416,12 +4248,11 @@ namespace Mono.CSharp {
                                                        IMethodData md = TypeManager.GetMethod (MethodBuilder);
                                                        md.SetMemberIsUsed ();
 
-                                                       RootContext.EntryPoint = MethodBuilder;
-                                                       RootContext.EntryPointLocation = Location;
+                                                       RootContext.EntryPoint = this;
                                                }
                                        } else {
-                                               Error_DuplicateEntryPoint (RootContext.EntryPoint, RootContext.EntryPointLocation);
-                                               Error_DuplicateEntryPoint (MethodBuilder, Location);
+                                               Error_DuplicateEntryPoint (RootContext.EntryPoint);
+                                               Error_DuplicateEntryPoint (this);
                                        }
                                } else {
                                        Report.Warning (28, 4, Location, "`{0}' has the wrong signature to be an entry point",
@@ -4453,7 +4284,6 @@ namespace Mono.CSharp {
                                        Report.Error (759, Location, "A partial method `{0}' implementation is missing a partial method declaration",
                                                GetSignatureForError ());
 
-                               MethodData.Emit (Parent);
                                base.Emit ();
                                
 #if GMCS_SOURCE                                
@@ -4461,8 +4291,6 @@ namespace Mono.CSharp {
                                        MethodBuilder.SetCustomAttribute (TypeManager.extension_attribute_attr);
 #endif
 
-                               Block = null;
-                               MethodData = null;
                        } catch {
                                Console.WriteLine ("Internal compiler error at {0}: exception caught while emitting {1}",
                                                   Location, MethodBuilder);
@@ -4490,7 +4318,7 @@ namespace Mono.CSharp {
                protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
                {
                        MethodInfo mi = (MethodInfo) Parent.PartialContainer.BaseCache.FindMemberToOverride (
-                               Parent.TypeBuilder, Name, ParameterTypes, GenericMethod, false);
+                               Parent.TypeBuilder, Name, Parameters, GenericMethod, false);
 
                        if (mi == null)
                                return null;
@@ -4567,7 +4395,7 @@ namespace Mono.CSharp {
                                        return true;
 
                                type = ec.ContainerType.BaseType;
-                               if (ec.ContainerType.IsValueType) {
+                               if (TypeManager.IsStruct (ec.ContainerType)) {
                                        Report.Error (522, loc,
                                                "`{0}': Struct constructors cannot call base constructors", TypeManager.CSharpSignature (caller_builder));
                                        return false;
@@ -4579,7 +4407,7 @@ namespace Mono.CSharp {
                                //
                                // struct D { public D (int a) : this () {}
                                //
-                               if (ec.ContainerType.IsValueType && argument_list == null)
+                               if (TypeManager.IsStruct (ec.ContainerType) && argument_list == null)
                                        return true;
                                
                                type = ec.ContainerType;
@@ -4619,7 +4447,7 @@ namespace Mono.CSharp {
                        if (base_constructor_group == null)
                                return;
                        
-                       ec.Mark (loc, false);
+                       ec.Mark (loc);
                        if (!ec.IsStatic)
                                base_constructor_group.InstanceExpression = ec.GetThis (loc);
                        
@@ -4653,11 +4481,10 @@ namespace Mono.CSharp {
                }
        }
        
-       public class Constructor : MethodCore, IMethodData, IAnonymousHost {
+       public class Constructor : MethodCore, IMethodData {
                public ConstructorBuilder ConstructorBuilder;
                public ConstructorInitializer Initializer;
                ListDictionary declarative_security;
-               ArrayList anonymous_methods;
                bool has_compliant_args;
 
                // <summary>
@@ -4678,10 +4505,10 @@ namespace Mono.CSharp {
                // The spec claims that static is not permitted, but
                // my very own code has static constructors.
                //
-               public Constructor (DeclSpace parent, string name, int mod, Parameters args,
+               public Constructor (DeclSpace parent, string name, int mod, Attributes attrs, Parameters args,
                                    ConstructorInitializer init, Location loc)
-                       : base (parent, null, null, mod, AllowedModifiers, false,
-                               new MemberName (name, loc), null, args)
+                       : base (parent, null, null, mod, AllowedModifiers,
+                               new MemberName (name, loc), attrs, args)
                {
                        Initializer = init;
                }
@@ -4694,27 +4521,19 @@ namespace Mono.CSharp {
                        get { return AttributeTargets.Constructor; }
                }
 
-               public Iterator Iterator {
-                       get { return null; }
-               }
-
                //
                // Returns true if this is a default constructor
                //
                public bool IsDefault ()
                {
                        if ((ModFlags & Modifiers.STATIC) != 0)
-                               return Parameters.Empty;
+                               return Parameters.IsEmpty;
                        
-                       return Parameters.Empty &&
+                       return Parameters.IsEmpty &&
                                        (Initializer is ConstructorBaseInitializer) &&
                                        (Initializer.Arguments == null);
                }
 
-               public bool IsCompilerGenerated {
-                       get { return Initializer is GeneratedBaseInitializer; }
-               }
-
                public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
                {
                        if (a.IsValidSecurityAttribute ()) {
@@ -4732,29 +4551,10 @@ namespace Mono.CSharp {
                        ConstructorBuilder.SetCustomAttribute (cb);
                }
 
-               public void AddAnonymousMethod (AnonymousMethodExpression anonymous)
-               {
-                       if (anonymous_methods == null)
-                               anonymous_methods = new ArrayList ();
-                       anonymous_methods.Add (anonymous);
-               }
-
-               public bool ResolveMembers ()
-               {
-                       if (anonymous_methods != null) {
-                               foreach (AnonymousMethodExpression ame in anonymous_methods) {
-                                       if (!ame.CreateAnonymousHelpers ())
-                                               return false;
-                               }
-                       }
-
-                       return true;
-               }
-
                protected override bool CheckBase ()
                {
                        if ((ModFlags & Modifiers.STATIC) != 0) {
-                               if (!Parameters.Empty) {
+                               if (!Parameters.IsEmpty) {
                                        Report.Error (132, Location, "`{0}': The static constructor must be parameterless",
                                                GetSignatureForError ());
                                        return false;
@@ -4769,11 +4569,11 @@ namespace Mono.CSharp {
                                return false;
 
                        if ((caching_flags & Flags.MethodOverloadsExist) != 0)
-                               Parent.MemberCache.CheckExistingMembersOverloads (this, ConstructorBuilder.ConstructorName,
+                               Parent.MemberCache.CheckExistingMembersOverloads (this, ConstructorInfo.ConstructorName,
                                        Parameters);
 
                        if (Parent.PartialContainer.Kind == Kind.Struct) {
-                               if (ParameterTypes.Length == 0) {
+                               if (Parameters.Count == 0) {
                                        Report.Error (568, Location, 
                                                "Structs cannot contain explicit parameterless constructors");
                                        return false;
@@ -4823,16 +4623,12 @@ namespace Mono.CSharp {
 
                        ConstructorBuilder = Parent.TypeBuilder.DefineConstructor (
                                ca, CallingConventions,
-                               ParameterTypes);
-
-                       if ((ModFlags & Modifiers.UNSAFE) != 0)
-                               ConstructorBuilder.InitLocals = false;
+                               Parameters.GetEmitTypes ());
 
                        if (Parent.PartialContainer.IsComImport) {
                                if (!IsDefault ()) {
                                        Report.Error (669, Location, "`{0}': A class with the ComImport attribute cannot have a user-defined constructor",
                                                Parent.GetSignatureForError ());
-                                       return false;
                                }
                                ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall);
                        }
@@ -4841,9 +4637,9 @@ namespace Mono.CSharp {
                        TypeManager.AddMethod (ConstructorBuilder, this);
                        
                        // It's here only to report an error
-                       if ((ModFlags & Modifiers.METHOD_YIELDS) != 0) {
+                       if (block != null && block.IsIterator) {
                                member_type = TypeManager.void_type;
-                               Iterator.CreateIterator (this, Parent, null, ModFlags);
+                               Iterator.CreateIterator (this, Parent.PartialContainer, ModFlags);
                        }
 
                        return true;
@@ -4854,6 +4650,9 @@ namespace Mono.CSharp {
                //
                public override void Emit ()
                {
+                       if ((ModFlags & Modifiers.DEBUGGER_HIDDEN) != 0)
+                               ConstructorBuilder.SetCustomAttribute (TypeManager.GetDebuggerHiddenAttribute (Location));
+
                        if (OptAttributes != null)
                                OptAttributes.Emit ();
 
@@ -4915,14 +4714,6 @@ namespace Mono.CSharp {
                                if (Report.Errors > 0)
                                        return;
 
-                               if (emit_field_initializers)
-                                       Parent.PartialContainer.EmitFieldInitializers (ec);
-
-                               if (block.ScopeInfo != null) {
-                                       ExpressionStatement init = block.ScopeInfo.GetScopeInitializer (ec);
-                                       init.EmitStatement (ec);
-                               }
-
                                ec.EmitResolvedTopBlock (block, unreachable);
                        }
 
@@ -4967,7 +4758,7 @@ namespace Mono.CSharp {
                                        MemberCache.VerifyClsParameterConflict (al, this, ConstructorBuilder);
  
                                if (TypeManager.IsSubclassOf (Parent.TypeBuilder, TypeManager.attribute_type)) {
-                                       foreach (Type param in ParameterTypes) {
+                                       foreach (Type param in Parameters.Types) {
                                                if (param.IsArray) {
                                                        return true;
                                                }
@@ -5043,8 +4834,6 @@ namespace Mono.CSharp {
                GenericMethod GenericMethod { get; }
                Parameters ParameterInfo { get; }
 
-               Iterator Iterator { get; }
-
                Attributes OptAttributes { get; }
                ToplevelBlock Block { get; set; }
 
@@ -5061,10 +4850,10 @@ namespace Mono.CSharp {
        // Encapsulates most of the Method's state
        //
        public class MethodData {
-
+#if GMCS_SOURCE
                static FieldInfo methodbuilder_attrs_field;
-
-               readonly IMethodData method;
+#endif
+               public readonly IMethodData method;
 
                public readonly GenericMethod GenericMethod;
 
@@ -5124,12 +4913,7 @@ namespace Mono.CSharp {
 
                        PendingImplementation pending = container.PendingImplementations;
                        if (pending != null){
-                               if (member is Indexer) // TODO: test it, but it should work without this IF
-                                       implementing = pending.IsInterfaceIndexer (
-                                               member.InterfaceType, method.ReturnType, method.ParameterInfo);
-                               else
-                                       implementing = pending.IsInterfaceMethod (
-                                               member.InterfaceType, name, method.ReturnType, method.ParameterInfo);
+                               implementing = pending.IsInterfaceMethod (name, member.InterfaceType, this);
 
                                if (member.InterfaceType != null){
                                        if (implementing == null){
@@ -5250,7 +5034,7 @@ namespace Mono.CSharp {
                                        flags |= MethodAttributes.Final;
                        }
 
-                       DefineMethodBuilder (container, method_full_name, method.ParameterInfo.Types);
+                       DefineMethodBuilder (container, method_full_name, method.ParameterInfo);
 
                        if (builder == null)
                                return false;
@@ -5260,26 +5044,8 @@ namespace Mono.CSharp {
                        else
                                declaring_type = container.TypeBuilder;
 
-                       if ((modifiers & Modifiers.UNSAFE) != 0)
-                               builder.InitLocals = false;
-
-
-                       if (implementing != null){
-                               //
-                               // clear the pending implemntation flag
-                               //
-                               if (member is Indexer) {
-                                       pending.ImplementIndexer (
-                                               member.InterfaceType, builder, method.ReturnType,
-                                               method.ParameterInfo, member.IsExplicitImpl);
-                               } else
-                                       pending.ImplementMethod (
-                                               member.InterfaceType, name, method.ReturnType,
-                                               method.ParameterInfo, member.IsExplicitImpl);
-
-                               if (member.IsExplicitImpl)
-                                       container.TypeBuilder.DefineMethodOverride (
-                                               builder, implementing);
+                       if (implementing != null && member.IsExplicitImpl) {
+                                       container.TypeBuilder.DefineMethodOverride (builder, implementing);
                        }
 
                        TypeManager.AddMethod (builder, method);
@@ -5303,12 +5069,12 @@ namespace Mono.CSharp {
                /// <summary>
                /// Create the MethodBuilder for the method 
                /// </summary>
-               void DefineMethodBuilder (TypeContainer container, string method_name, Type[] ParameterTypes)
+               void DefineMethodBuilder (TypeContainer container, string method_name, Parameters param)
                {
                        if (builder == null) {
                                builder = container.TypeBuilder.DefineMethod (
                                        method_name, flags, method.CallingConventions,
-                                       method.ReturnType, ParameterTypes);
+                                       method.ReturnType, param.GetEmitTypes ());
                                return;
                        }
 
@@ -5317,7 +5083,7 @@ namespace Mono.CSharp {
                        // Generic method has been already defined to resolve method parameters
                        // correctly when they use type parameters
                        //
-                       builder.SetParameters (ParameterTypes);
+                       builder.SetParameters (param.GetEmitTypes ());
                        builder.SetReturnType (method.ReturnType);
 
                        if (builder.Attributes != flags) {
@@ -5352,72 +5118,41 @@ namespace Mono.CSharp {
                        if (GenericMethod != null)
                                GenericMethod.EmitAttributes ();
 
-                       SourceMethod source = SourceMethod.Create (parent, MethodBuilder, method.Block);
-
                        //
-                       // Handle destructors specially
+                       // clear the pending implementation flag
                        //
-                       // FIXME: This code generates buggy code
-                       //
-                       if (member is Destructor)
-                               EmitDestructor (ec, block);
-                       else
-                               ec.EmitTopBlock (method, block);
+                       if (implementing != null)
+                               parent.PartialContainer.PendingImplementations.ImplementMethod (method.MethodName.Basename,
+                                       member.InterfaceType, this, member.IsExplicitImpl);
 
-                       if (source != null) {
-                               method.EmitExtraSymbolInfo (source);
-                               if (method.Iterator != null)
-                                       source.SetCompilerGenerated ();
-                               source.CloseMethod ();
-                       }
-               }
-
-               void EmitDestructor (EmitContext ec, ToplevelBlock block)
-               {
-                       ILGenerator ig = ec.ig;
-                       
-                       Label finish = ig.DefineLabel ();
+                       SourceMethod source = SourceMethod.Create (parent, MethodBuilder, method.Block);
 
-                       block.SetDestructor ();
-                       
-                       ig.BeginExceptionBlock ();
-                       ec.ReturnLabel = finish;
-                       ec.HasReturnLabel = true;
                        ec.EmitTopBlock (method, block);
-                       
-                       // ig.MarkLabel (finish);
-                       ig.BeginFinallyBlock ();
-                       
-                       if (ec.ContainerType.BaseType != null) {
-                               Expression member_lookup = Expression.MemberLookup (
-                                       ec.ContainerType.BaseType, null, ec.ContainerType.BaseType,
-                                       "Finalize", MemberTypes.Method, Expression.AllBindingFlags, method.Location);
 
-                               if (member_lookup != null){
-                                       MethodGroupExpr base_destructor = ((MethodGroupExpr) member_lookup);
-                               
-                                       ig.Emit (OpCodes.Ldarg_0);
-                                       ig.Emit (OpCodes.Call, (MethodInfo) base_destructor.Methods [0]);
-                               }
+                       if (source != null) {
+                               method.EmitExtraSymbolInfo (source);
+                               source.CloseMethod ();
                        }
-                       
-                       ig.EndExceptionBlock ();
-                       //ig.MarkLabel (ec.ReturnLabel);
-                       ig.Emit (OpCodes.Ret);
                }
        }
 
-       // TODO: Should derive from MethodCore
-       public class Destructor : Method {
+       public class Destructor : MethodOrOperator
+       {
+               const int AllowedModifiers =
+                       Modifiers.UNSAFE |
+                       Modifiers.EXTERN;
 
-               static string[] attribute_targets = new string [] { "method" };
+               static readonly string[] attribute_targets = new string [] { "method" };
 
-               public Destructor (DeclSpace parent, FullNamedExpression return_type, int mod,
-                                  string name, Parameters parameters, Attributes attrs,
-                                  Location l)
-                       : base (parent, null, return_type, mod, false, new MemberName (name, l),
-                               parameters, attrs)
-               { }
+               public static readonly string MetadataName = "Finalize";
+
+               public Destructor (DeclSpace parent, int mod, Parameters parameters, Attributes attrs, Location l)
+                       : base (parent, null, TypeManager.system_void_expr, mod, AllowedModifiers,
+                               new MemberName (MetadataName, l), attrs, parameters)
+               {
+                       ModFlags &= ~Modifiers.PRIVATE;
+                       ModFlags |= Modifiers.PROTECTED;
+               }
 
                public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
                {
@@ -5429,11 +5164,55 @@ namespace Mono.CSharp {
                        base.ApplyAttributeBuilder (a, cb);
                }
 
+               protected override bool CheckBase ()
+               {
+                       flags |= MethodAttributes.Virtual;
+
+                       if (!base.CheckBase ())
+                               return false;
+
+                       if (Parent.PartialContainer.BaseCache == null)
+                               return true;
+
+                       Type base_type = Parent.PartialContainer.BaseCache.Container.Type;
+                       if (base_type != null && Block != null) {
+                               MethodGroupExpr method_expr = Expression.MethodLookup (Parent.TypeBuilder, base_type, MetadataName, Location);
+                               if (method_expr == null)
+                                       throw new NotImplementedException ();
+
+                               method_expr.IsBase = true;
+                               method_expr.InstanceExpression = new CompilerGeneratedThis (Parent.TypeBuilder, Location);
+
+                               ToplevelBlock new_block = new ToplevelBlock (Block.StartLocation);
+                               new_block.EndLocation = Block.EndLocation;
+
+                               Block finaly_block = new ExplicitBlock (new_block, Location, Location);
+                               Block try_block = new Block (new_block, block);
+
+                               //
+                               // 0-size arguments to avoid CS0250 error
+                               // TODO: Should use AddScopeStatement or something else which emits correct
+                               // debugger scope
+                               //
+                               finaly_block.AddStatement (new StatementExpression (new Invocation (method_expr, new ArrayList (0))));
+                               new_block.AddStatement (new TryFinally (try_block, finaly_block, Location));
+
+                               block = new_block;
+                       }
+
+                       return true;
+               }
+
                public override string GetSignatureForError ()
                {
                        return Parent.GetSignatureForError () + ".~" + Parent.MemberName.Name + "()";
                }
 
+               protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
+               {
+                       return null;
+               }
+
                public override string[] ValidAttributeTargets {
                        get {
                                return attribute_targets;
@@ -5441,32 +5220,14 @@ namespace Mono.CSharp {
                }
        }
        
-       abstract public class MemberBase : MemberCore {
+       public abstract class MemberBase : MemberCore
+       {
                protected FullNamedExpression type_name;
+               protected Type member_type;
+
                public readonly DeclSpace ds;
                public readonly GenericMethod GenericMethod;
 
-               //
-               // The type of this property / indexer / event
-               //
-               protected Type member_type;
-               public Type MemberType {
-                       get {
-                               // TODO: Who wrote this, ResolveAsTypeTerminal can have side effects
-                               if (member_type == null && type_name != null) {
-                                       IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
-                                       type_name = type_name.ResolveAsTypeTerminal (rc, false);
-                                       if (type_name != null) {
-                                               member_type = type_name.Type;
-                                       }
-                               }
-                               return member_type;
-                       }
-               }
-
-               //
-               // The constructor is only exposed to our children
-               //
                protected MemberBase (DeclSpace parent, GenericMethod generic,
                                      FullNamedExpression type, int mod, int allowed_mod, int def_mod,
                                      MemberName name, Attributes attrs)
@@ -5480,25 +5241,40 @@ namespace Mono.CSharp {
                                GenericMethod.ModFlags = ModFlags;
                }
 
-               protected virtual bool CheckBase ()
+               //
+               // Main member define entry
+               //
+               public override bool Define ()
                {
-                       CheckProtectedModifier ();
+                       DoMemberTypeIndependentChecks ();
+
+                       //
+                       // Returns false only when type resolution failed
+                       //
+                       if (!ResolveMemberType ())
+                               return false;
 
+                       DoMemberTypeDependentChecks ();
                        return true;
                }
 
-               protected virtual bool DoDefine ()
+               //
+               // Any type_name independent checks
+               //
+               protected virtual void DoMemberTypeIndependentChecks ()
                {
-                       if (MemberType == null)
-                               return false;
-
-                       if ((Parent.ModFlags & Modifiers.SEALED) != 0 && 
-                               (ModFlags & (Modifiers.VIRTUAL|Modifiers.ABSTRACT)) != 0) {
-                                       Report.Error (549, Location, "New virtual member `{0}' is declared in a sealed class `{1}'",
-                                               GetSignatureForError (), Parent.GetSignatureForError ());
-                                       return false;
+                       if ((Parent.ModFlags & Modifiers.SEALED) != 0 &&
+                               (ModFlags & (Modifiers.VIRTUAL | Modifiers.ABSTRACT)) != 0) {
+                               Report.Error (549, Location, "New virtual member `{0}' is declared in a sealed class `{1}'",
+                                       GetSignatureForError (), Parent.GetSignatureForError ());
                        }
-                       
+               }
+
+               //
+               // Any type_name dependent checks
+               //
+               protected virtual void DoMemberTypeDependentChecks ()
+               {
                        // verify accessibility
                        if (!IsAccessibleAs (MemberType)) {
                                Report.SymbolRelatedToPreviousError (MemberType);
@@ -5529,20 +5305,47 @@ namespace Mono.CSharp {
                                                      TypeManager.CSharpName (MemberType) + "' is less " +
                                                      "accessible than field `" + GetSignatureForError () + "'");
                                }
-                               return false;
                        }
-
-                       return true;
                }
 
                protected bool IsTypePermitted ()
                {
-                       if (MemberType == TypeManager.arg_iterator_type || MemberType == TypeManager.typed_reference_type) {
+                       if (TypeManager.IsSpecialType (MemberType)) {
                                Report.Error (610, Location, "Field or property cannot be of type `{0}'", TypeManager.CSharpName (MemberType));
                                return false;
                        }
                        return true;
                }
+
+               protected virtual bool CheckBase ()
+               {
+                       CheckProtectedModifier ();
+
+                       return true;
+               }
+
+               public Type MemberType {
+                       get { return member_type; }
+               }
+
+               protected virtual bool ResolveMemberType ()
+               {
+                       if (member_type != null)
+                               throw new InternalErrorException ("Multi-resolve");
+
+                       IResolveContext rc = GenericMethod == null ? this : (IResolveContext) ds;
+                       TypeExpr te = type_name.ResolveAsTypeTerminal (rc, false);
+                       if (te == null)
+                               return false;
+
+                       //
+                       // Replace original type name, error reporting can use fully resolved name
+                       //
+                       type_name = te;
+
+                       member_type = te.Type;
+                       return true;
+               }
        }
 
        //
@@ -5598,6 +5401,7 @@ namespace Mono.CSharp {
                        }
 #endif
 
+#if !NET_2_0
                        if (a.Type == TypeManager.marshal_as_attr_type) {
                                UnmanagedMarshal marshal = a.GetMarshal (this);
                                if (marshal != null) {
@@ -5605,7 +5409,7 @@ namespace Mono.CSharp {
                                }
                                return;
                        }
-
+#endif
                        if ((a.HasSecurityAttribute)) {
                                a.Error_InvalidSecurityParent ();
                                return;
@@ -5636,35 +5440,19 @@ namespace Mono.CSharp {
                        return true;
                }
 
-               public override bool Define()
+               protected override void DoMemberTypeDependentChecks ()
                {
-                       if (MemberType == null || member_type == null)
-                               return false;
+                       base.DoMemberTypeDependentChecks ();
 
                        if (TypeManager.IsGenericParameter (MemberType))
-                               return true;
-
-                       if (MemberType == TypeManager.void_type) {
-                               // TODO: wrong location
-                               Expression.Error_VoidInvalidInTheContext (Location);
-                               return false;
-                       }
+                               return;
 
                        if (MemberType.IsSealed && MemberType.IsAbstract) {
                                Error_VariableOfStaticClass (Location, GetSignatureForError (), MemberType);
-                               return false;
                        }
 
-                       if (!CheckBase ())
-                               return false;
-
-                       if (!DoDefine ())
-                               return false;
-
-                       if (!IsTypePermitted ())
-                               return false;
-
-                       return true;
+                       CheckBase ();
+                       IsTypePermitted ();
                }
 
                //
@@ -5677,17 +5465,16 @@ namespace Mono.CSharp {
                public override void Emit ()
                {
 #if GMCS_SOURCE
-                       if ((ModFlags & Modifiers.COMPILER_GENERATED) != 0) {
+                       if ((ModFlags & Modifiers.COMPILER_GENERATED) != 0 && !Parent.IsCompilerGenerated)
                                FieldBuilder.SetCustomAttribute (TypeManager.GetCompilerGeneratedAttribute (Location));
-                       }
 #endif
 
                        if (OptAttributes != null) {
                                OptAttributes.Emit ();
                        }
 
-                       if (((status & Status.HAS_OFFSET) == 0) && (ModFlags & Modifiers.STATIC) == 0 && Parent.PartialContainer.HasExplicitLayout) {
-                               Report.Error (625, Location, "`{0}': Instance field types marked with StructLayout(LayoutKind.Explicit) must have a FieldOffset attribute.", GetSignatureForError ());
+                       if (((status & Status.HAS_OFFSET) == 0) && (ModFlags & (Modifiers.STATIC | Modifiers.BACKING_FIELD)) == 0 && Parent.PartialContainer.HasExplicitLayout) {
+                               Report.Error (625, Location, "`{0}': Instance field types marked with StructLayout(LayoutKind.Explicit) must have a FieldOffset attribute", GetSignatureForError ());
                        }
 
                        base.Emit ();
@@ -5730,7 +5517,8 @@ namespace Mono.CSharp {
                                return false;
 
                        if (!IsFieldClsCompliant) {
-                               Report.Error (3003, Location, "Type of `{0}' is not CLS-compliant", GetSignatureForError ());
+                               Report.Warning (3003, 1, Location, "Type of `{0}' is not CLS-compliant",
+                                       GetSignatureForError ());
                        }
                        return true;
                }
@@ -5798,7 +5586,7 @@ namespace Mono.CSharp {
                        Expression size_expr, Attributes attrs, Location loc):
                        base (parent, type, mod, AllowedModifiers, new MemberName (name, loc), attrs)
                {
-                       if (RootContext.Version == LanguageVersion.ISO_1)
+                       if (RootContext.Version < LanguageVersion.ISO_2)
                                Report.FeatureIsNotAvailable (loc, "fixed size buffers");
 
                        this.size_expr = size_expr;
@@ -5806,9 +5594,6 @@ namespace Mono.CSharp {
 
                public override bool Define()
                {
-                       if (!Parent.IsInUnsafeScope)
-                               Expression.UnsafeError (Location);
-
                        if (!base.Define ())
                                return false;
 
@@ -5819,7 +5604,7 @@ namespace Mono.CSharp {
                        
                        // Create nested fixed buffer container
                        string name = String.Format ("<{0}>__FixedBuffer{1}", Name, GlobalCounter++);
-                       fixed_buffer_type = Parent.TypeBuilder.DefineNestedType (name,
+                       fixed_buffer_type = Parent.TypeBuilder.DefineNestedType (name, CodeGen.Module.DefaultCharSetType |
                                TypeAttributes.NestedPublic | TypeAttributes.Sealed | TypeAttributes.BeforeFieldInit, TypeManager.value_type);
                        
                        element = fixed_buffer_type.DefineField (FixedElementName, MemberType, FieldAttributes.Public);
@@ -5832,19 +5617,27 @@ namespace Mono.CSharp {
                        return true;
                }
 
-               public override void Emit()
+               protected override void DoMemberTypeIndependentChecks ()
                {
+                       base.DoMemberTypeIndependentChecks ();
+
+                       if (!Parent.IsInUnsafeScope)
+                               Expression.UnsafeError (Location);
+
                        if (Parent.PartialContainer.Kind != Kind.Struct) {
                                Report.Error (1642, Location, "`{0}': Fixed size buffer fields may only be members of structs",
                                        GetSignatureForError ());
                        }
+               }
 
+               public override void Emit()
+               {
                        EmitContext ec = new EmitContext (this, Parent, Location, null, TypeManager.void_type, ModFlags);
                        Constant c = size_expr.ResolveAsConstant (ec, this);
                        if (c == null)
                                return;
-
-                       IntConstant buffer_size_const = c.ImplicitConversionRequired (TypeManager.int32_type, Location) as IntConstant;
+                       
+                       IntConstant buffer_size_const = c.ImplicitConversionRequired (ec, TypeManager.int32_type, Location) as IntConstant;
                        if (buffer_size_const == null)
                                return;
 
@@ -5865,6 +5658,28 @@ namespace Mono.CSharp {
 
                        buffer_size *= type_size;
                        EmitFieldSize (buffer_size);
+
+#if GMCS_SOURCE
+                       //
+                       // Emit compiler generated fixed buffer type attribute
+                       //
+                       CustomAttributeBuilder cab = TypeManager.unsafe_value_type_attr;
+                       if (cab == null) {
+                               Type attr_type = TypeManager.CoreLookupType (
+                                       "System.Runtime.CompilerServices", "UnsafeValueTypeAttribute", Kind.Class, true);
+
+                               if (attr_type != null) {
+                                       ConstructorInfo ci = TypeManager.GetPredefinedConstructor (attr_type, Location);
+                                       if (ci != null) {
+                                               cab = new CustomAttributeBuilder (ci, new object [0]);
+                                               TypeManager.unsafe_value_type_attr = cab;
+                                       }
+                               }
+                       }
+
+                       if (cab != null)
+                               fixed_buffer_type.SetCustomAttribute (cab);
+#endif
                        base.Emit ();
                }
 
@@ -5926,6 +5741,27 @@ namespace Mono.CSharp {
                        }
                }
 
+               public void SetCharSet (TypeAttributes ta)
+               {
+                       TypeAttributes cta = fixed_buffer_type.Attributes;
+                       if ((cta & TypeAttributes.UnicodeClass) != (ta & TypeAttributes.UnicodeClass))
+                               SetTypeBuilderCharSet ((cta & ~TypeAttributes.AutoClass) | TypeAttributes.UnicodeClass);
+                       else if ((cta & TypeAttributes.AutoClass) != (ta & TypeAttributes.AutoClass))
+                               SetTypeBuilderCharSet ((cta & ~TypeAttributes.UnicodeClass) | TypeAttributes.AutoClass);
+                       else if (cta == 0 && ta != 0)
+                               SetTypeBuilderCharSet (cta & ~(TypeAttributes.UnicodeClass | TypeAttributes.AutoClass));
+               }
+
+               void SetTypeBuilderCharSet (TypeAttributes ta)
+               {
+                       MethodInfo mi = typeof (TypeBuilder).GetMethod ("SetCharSet", BindingFlags.Instance | BindingFlags.NonPublic);
+                       if (mi == null) {
+                               Report.RuntimeMissingSupport (Location, "TypeBuilder::SetCharSet");
+                       } else {
+                               mi.Invoke (fixed_buffer_type, new object [] { ta });
+                       }
+               }
+
                #region IFixedField Members
 
                public FieldInfo Element {
@@ -5961,10 +5797,9 @@ namespace Mono.CSharp {
                        Modifiers.UNSAFE |
                        Modifiers.READONLY;
 
-               public Field (DeclSpace parent, FullNamedExpression type, int mod, string name,
-                             Attributes attrs, Location loc)
-                       : base (parent, type, mod, AllowedModifiers, new MemberName (name, loc),
-                               attrs)
+               public Field (DeclSpace parent, FullNamedExpression type, int mod, MemberName name,
+                             Attributes attrs)
+                       : base (parent, type, mod, AllowedModifiers, name, attrs)
                {
                }
 
@@ -5973,9 +5808,6 @@ namespace Mono.CSharp {
                        if (TypeManager.IsReferenceType (MemberType))
                                return true;
 
-                       if (MemberType.IsEnum)
-                               return true;
-
                        if (MemberType == TypeManager.bool_type || MemberType == TypeManager.char_type ||
                                MemberType == TypeManager.sbyte_type || MemberType == TypeManager.byte_type ||
                                MemberType == TypeManager.short_type || MemberType == TypeManager.ushort_type ||
@@ -5983,27 +5815,43 @@ namespace Mono.CSharp {
                                MemberType == TypeManager.float_type)
                                return true;
 
+                       if (TypeManager.IsEnumType (MemberType))
+                               return true;
+
                        return false;
                }
 
-               public override bool Define ()
+               bool CheckStructLayout (Type type, bool isStatic)
                {
-                       if (!base.Define ())
-                               return false;
+                       if (TypeManager.IsBuiltinType (type))
+                               return true;
 
-                       if ((ModFlags & Modifiers.VOLATILE) != 0){
-                               if (!CanBeVolatile ()) {
-                                       Report.Error (677, Location, "`{0}': A volatile field cannot be of the type `{1}'",
-                                               GetSignatureForError (), TypeManager.CSharpName (MemberType));
-                               }
+                       if (isStatic) {
+                               if (!TypeManager.IsValueType (type) || TypeManager.IsEqual (type, Parent.TypeBuilder))
+                                       return true;
+                       }
 
-                               if ((ModFlags & Modifiers.READONLY) != 0){
-                                       Report.Error (678, Location, "`{0}': A field cannot be both volatile and readonly",
-                                               GetSignatureForError ());
+                       if (!TypeManager.IsEqual (TypeManager.DropGenericTypeArguments (type), Parent.TypeBuilder)) {
+                               if (!TypeManager.IsGenericType (type))
+                                       return true;
+
+                               foreach (Type t in TypeManager.GetTypeArguments (type)) {
+                                       if (!CheckStructLayout (t, false))
+                                               return false;
                                }
+                               return true;
                        }
+                       
+                       Report.Error (523, Location,
+                               "Struct member `{0}' of type `{1}' causes a cycle in the struct layout",
+                               GetSignatureForError (), TypeManager.CSharpName (MemberType));
+                       return false;
+               }
 
-                       FieldAttributes fa = Modifiers.FieldAttr (ModFlags);
+               public override bool Define ()
+               {
+                       if (!base.Define ())
+                               return false;
 
                        try {
 #if GMCS_SOURCE
@@ -6027,24 +5875,38 @@ namespace Mono.CSharp {
                                TypeManager.RegisterFieldBase (FieldBuilder, this);
                        }
                        catch (ArgumentException) {
-                               Report.Warning (-24, 1, Location, "The Microsoft runtime is unable to use [void|void*] as a field type, try using the Mono runtime.");
+                               Report.RuntimeMissingSupport (Location, "`void' or `void*' field type");
                                return false;
                        }
 
-                       if (initializer != null)
+                       if (initializer != null) {
                                ((TypeContainer) Parent).RegisterFieldForInitialization (this,
-                                       new FieldInitializer (FieldBuilder, initializer));
-
-                       if (Parent.PartialContainer.Kind == Kind.Struct && (fa & FieldAttributes.Static) == 0 &&
-                               MemberType == Parent.TypeBuilder && !TypeManager.IsBuiltinType (MemberType) && initializer == null) {
-                               Report.Error (523, Location, "Struct member `{0}' causes a cycle in the structure layout",
-                                       GetSignatureForError ());
-                               return false;
+                                       new FieldInitializer (FieldBuilder, initializer, this));
+                       } else {
+                               if (Parent.PartialContainer.Kind == Kind.Struct)
+                                       CheckStructLayout (member_type, (ModFlags & Modifiers.STATIC) != 0);
                        }
 
                        return true;
                }
 
+               protected override void DoMemberTypeDependentChecks ()
+               {
+                       base.DoMemberTypeDependentChecks ();
+
+                       if ((ModFlags & Modifiers.VOLATILE) != 0) {
+                               if (!CanBeVolatile ()) {
+                                       Report.Error (677, Location, "`{0}': A volatile field cannot be of the type `{1}'",
+                                               GetSignatureForError (), TypeManager.CSharpName (MemberType));
+                               }
+
+                               if ((ModFlags & Modifiers.READONLY) != 0) {
+                                       Report.Error (678, Location, "`{0}': A field cannot be both volatile and readonly",
+                                               GetSignatureForError ());
+                               }
+                       }
+               }
+
                public override string GetSignatureForError ()
                {
                        string s = base.GetSignatureForError ();
@@ -6072,7 +5934,7 @@ namespace Mono.CSharp {
        //
        // `set' and `get' accessors are represented with an Accessor.
        // 
-       public class Accessor : IAnonymousHost {
+       public class Accessor {
                //
                // Null if the accessor is empty, or a Block if not
                //
@@ -6086,28 +5948,16 @@ namespace Mono.CSharp {
                public Attributes Attributes;
                public Location Location;
                public int ModFlags;
-               public bool Yields;
-               public ArrayList AnonymousMethods;
+               public Parameters Parameters;
                
-               public Accessor (ToplevelBlock b, int mod, Attributes attrs, Location loc)
+               public Accessor (ToplevelBlock b, int mod, Attributes attrs, Parameters p, Location loc)
                {
                        Block = b;
                        Attributes = attrs;
                        Location = loc;
+                       Parameters = p;
                        ModFlags = Modifiers.Check (AllowedModifiers, mod, 0, loc);
                }
-
-               public void SetYields ()
-               {
-                       Yields = true;
-               }
-
-               public void AddAnonymousMethod (AnonymousMethodExpression ame)
-               {
-                       if (AnonymousMethods == null)
-                               AnonymousMethods = new ArrayList ();
-                       AnonymousMethods.Add (ame);
-               }
        }
 
        // Ooouh Martin, templates are missing here.
@@ -6154,10 +6004,6 @@ namespace Mono.CSharp {
 
                #region IMethodData Members
 
-               public abstract Iterator Iterator {
-                       get;
-               }
-
                public ToplevelBlock Block {
                        get {
                                return block;
@@ -6252,8 +6098,10 @@ namespace Mono.CSharp {
                        EmitMethod (parent);
 
 #if GMCS_SOURCE                        
-                       if ((ModFlags & Modifiers.COMPILER_GENERATED) != 0)
+                       if ((ModFlags & Modifiers.COMPILER_GENERATED) != 0 && !Parent.IsCompilerGenerated)
                                method_data.MethodBuilder.SetCustomAttribute (TypeManager.GetCompilerGeneratedAttribute (Location));
+                       if (((ModFlags & Modifiers.DEBUGGER_HIDDEN) != 0))
+                               method_data.MethodBuilder.SetCustomAttribute (TypeManager.GetDebuggerHiddenAttribute (Location));
 #endif                 
                        if (OptAttributes != null)
                                OptAttributes.Emit ();
@@ -6321,11 +6169,6 @@ namespace Mono.CSharp {
                        }
                }
 
-               public virtual bool ResolveMembers ()
-               {
-                       return true;
-               }
-
                //
                //   Represents header string for documentation comment.
                //
@@ -6359,14 +6202,11 @@ namespace Mono.CSharp {
 
                        public override MethodBuilder Define (DeclSpace parent)
                        {
-                               if (!CheckForDuplications ())
-                                       return null;
+                               base.Define (parent);
 
                                if (IsDummy)
                                        return null;
                                
-                               base.Define (parent);
-                               
                                method_data = new MethodData (method, ModFlags, flags, this);
 
                                if (!method_data.Define (parent, method.GetFullName (MemberName)))
@@ -6400,14 +6240,17 @@ namespace Mono.CSharp {
                        ImplicitParameter param_attr;
                        protected Parameters parameters;
 
-                       public SetMethod (PropertyBase method):
+                       public SetMethod (PropertyBase method) :
                                base (method, "set_")
                        {
+                               parameters = new Parameters (
+                                       new Parameter (method.type_name, "value", Parameter.Modifier.NONE, null, Location));
                        }
 
                        public SetMethod (PropertyBase method, Accessor accessor):
                                base (method, accessor, "set_")
                        {
+                               this.parameters = accessor.Parameters;
                        }
 
                        protected override void ApplyToExtraTarget(Attribute a, CustomAttributeBuilder cb)
@@ -6424,29 +6267,19 @@ namespace Mono.CSharp {
                        }
 
                        public override Parameters ParameterInfo {
-                               get {
-                                       if (parameters == null)
-                                               DefineParameters ();
-                                       return parameters;
-                               }
-                       }
-
-                       protected virtual void DefineParameters ()
-                       {
-                               parameters = Parameters.CreateFullyResolved (
-                                       new Parameter (method.MemberType, "value", Parameter.Modifier.NONE, null, Location));
+                           get {
+                               return parameters;
+                           }
                        }
 
                        public override MethodBuilder Define (DeclSpace parent)
                        {
-                               if (!CheckForDuplications ())
-                                       return null;
-                               
+                               parameters.Resolve (ResolveContext);
+                               base.Define (parent);
+
                                if (IsDummy)
                                        return null;
 
-                               base.Define (parent);
-
                                method_data = new MethodData (method, ModFlags, flags, this);
 
                                if (!method_data.Define (parent, method.GetFullName (MemberName)))
@@ -6474,14 +6307,12 @@ namespace Mono.CSharp {
                {
                        protected readonly PropertyBase method;
                        protected MethodAttributes flags;
-                       Iterator iterator;
-                       ArrayList anonymous_methods;
-                       bool yields;
 
                        public PropertyMethod (PropertyBase method, string prefix)
                                : base (method, prefix)
                        {
                                this.method = method;
+                               this.ModFlags = method.ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE);                                
                        }
 
                        public PropertyMethod (PropertyBase method, Accessor accessor,
@@ -6489,19 +6320,13 @@ namespace Mono.CSharp {
                                : base (method, accessor, prefix)
                        {
                                this.method = method;
-                               this.ModFlags = accessor.ModFlags;
-                               yields = accessor.Yields;
-                               anonymous_methods = accessor.AnonymousMethods;
+                               this.ModFlags = accessor.ModFlags | (method.ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE));
 
                                if (accessor.ModFlags != 0 && RootContext.Version == LanguageVersion.ISO_1) {
                                        Report.FeatureIsNotAvailable (Location, "access modifiers on properties");
                                }
                        }
 
-                       public override Iterator Iterator {
-                               get { return iterator; }
-                       }
-
                        public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
                        {
                                if (a.IsInternalMethodImplAttribute) {
@@ -6522,26 +6347,23 @@ namespace Mono.CSharp {
                                return method.IsClsComplianceRequired ();
                        }
 
-                       public override bool ResolveMembers ()
+                       public virtual MethodBuilder Define (DeclSpace parent)
                        {
-                               if (yields) {
-                                       iterator = Iterator.CreateIterator (this, Parent, null, ModFlags);
-                                       if (iterator == null)
-                                               return false;
-                               }
-
-                               if (anonymous_methods != null) {
-                                       foreach (AnonymousMethodExpression ame in anonymous_methods) {
-                                               if (!ame.CreateAnonymousHelpers ())
-                                                       return false;
+                               CheckForDuplications ();
+
+                               if (IsDummy) {
+                                       if (method.InterfaceType != null && parent.PartialContainer.PendingImplementations != null) {
+                                               MethodInfo mi = parent.PartialContainer.PendingImplementations.IsInterfaceMethod (
+                                                       MethodName.Name, method.InterfaceType, new MethodData (method, ModFlags, flags, this));
+                                               if (mi != null) {
+                                                       Report.SymbolRelatedToPreviousError (mi);
+                                                       Report.Error (551, Location, "Explicit interface implementation `{0}' is missing accessor `{1}'",
+                                                               method.GetSignatureForError (), TypeManager.CSharpSignature (mi, true));
+                                               }
                                        }
+                                       return null;
                                }
 
-                               return true;
-                       }
-
-                       public virtual MethodBuilder Define (DeclSpace parent)
-                       {
                                TypeContainer container = parent.PartialContainer;
 
                                //
@@ -6567,19 +6389,28 @@ namespace Mono.CSharp {
                                }
 
                                CheckAbstractAndExtern (block != null);
+
+                               if (block != null && block.IsIterator)
+                                       Iterator.CreateIterator (this, Parent.PartialContainer, ModFlags);
+
                                return null;
                        }
 
-                       public bool HasCustomAccessModifier
-                       {
+                       public bool HasCustomAccessModifier {
                                get {
                                        return (ModFlags & Modifiers.PROPERTY_CUSTOM) != 0;
                                }
                        }
 
+                       public PropertyBase Property {
+                               get {
+                                       return method;
+                               }
+                       }
+
                        public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
                        {
-                               return new EmitContext (method,
+                               return new EmitContext (this,
                                        ds, method.ds, method.Location, ig, ReturnType,
                                        method.ModFlags, false);
                        }
@@ -6619,7 +6450,7 @@ namespace Mono.CSharp {
                                }
                        }
 
-                       protected bool CheckForDuplications () 
+                       protected bool CheckForDuplications ()
                        {
                                if ((caching_flags & Flags.MethodOverloadsExist) == 0)
                                        return true;
@@ -6635,9 +6466,9 @@ namespace Mono.CSharp {
                protected bool define_set_first = false;
 
                public PropertyBase (DeclSpace parent, FullNamedExpression type, int mod_flags,
-                                    int allowed_mod, bool is_iface, MemberName name,
+                                    int allowed_mod, MemberName name,
                                     Attributes attrs, bool define_set_first)
-                       : base (parent, null, type, mod_flags, allowed_mod, is_iface, name,     attrs)
+                       : base (parent, null, type, mod_flags, allowed_mod, name, attrs)
                {
                         this.define_set_first = define_set_first;
                }
@@ -6658,21 +6489,24 @@ namespace Mono.CSharp {
                        }
                }
 
-               public override bool Define ()
+               protected override void DoMemberTypeDependentChecks ()
                {
-                       if (!DoDefine ())
-                               return false;
+                       base.DoMemberTypeDependentChecks ();
 
-                       if (!IsTypePermitted ())
-                               return false;
+                       IsTypePermitted ();
+#if MS_COMPATIBLE
+                       if (MemberType.IsGenericParameter)
+                               return;
+#endif
 
-                       return true;
+                       if ((MemberType.Attributes & Class.StaticClassAttribute) == Class.StaticClassAttribute) {
+                               Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
+                       }
                }
 
-               protected override bool DoDefine ()
+               protected override void DoMemberTypeIndependentChecks ()
                {
-                       if (!base.DoDefine ())
-                               return false;
+                       base.DoMemberTypeIndependentChecks ();
 
                        //
                        // Accessors modifiers check
@@ -6681,28 +6515,15 @@ namespace Mono.CSharp {
                                (Set.ModFlags & Modifiers.Accessibility) != 0) {
                                Report.Error (274, Location, "`{0}': Cannot specify accessibility modifiers for both accessors of the property or indexer",
                                                GetSignatureForError ());
-                               return false;
                        }
 
-                       if ((Get.IsDummy || Set.IsDummy)
-                                       && (Get.ModFlags != 0 || Set.ModFlags != 0) && (ModFlags & Modifiers.OVERRIDE) == 0) {
+                       if ((ModFlags & Modifiers.OVERRIDE) == 0 && 
+                               (Get.IsDummy && (Set.ModFlags & Modifiers.Accessibility) != 0) ||
+                               (Set.IsDummy && (Get.ModFlags & Modifiers.Accessibility) != 0)) {
                                Report.Error (276, Location, 
-                                       "`{0}': accessibility modifiers on accessors may only be used if the property or indexer has both a get and a set accessor",
-                                       GetSignatureForError ());
-                               return false;
-                       }
-
-#if MS_COMPATIBLE
-                       if (MemberType.IsGenericParameter)
-                               return true;
-#endif
-
-                       if ((MemberType.Attributes & Class.StaticClassAttribute) == Class.StaticClassAttribute) {
-                               Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
-                               return false;
+                                             "`{0}': accessibility modifiers on accessors may only be used if the property or indexer has both a get and a set accessor",
+                                             GetSignatureForError ());
                        }
-
-                       return true;
                }
 
                bool DefineGet ()
@@ -6859,59 +6680,26 @@ namespace Mono.CSharp {
                        Modifiers.ABSTRACT |
                        Modifiers.UNSAFE |
                        Modifiers.EXTERN |
-                       Modifiers.METHOD_YIELDS |
                        Modifiers.VIRTUAL;
 
                const int AllowedInterfaceModifiers =
                        Modifiers.NEW;
 
-               void CreateAutomaticProperty (Block block, Accessor get_block, Accessor set_block)
-               {
-                       // Make the field
-                       Field field = new Field (
-                               Parent, type_name,
-                               Modifiers.BACKING_FIELD | Modifiers.PRIVATE | (ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE)),
-                           "<" + Name + ">k__BackingField", null, Location);
-                       ((TypeContainer)Parent).PartialContainer.AddField (field);
-
-                       // Make get block
-                       get_block.Block = new ToplevelBlock (block, null, Location);
-                       Return r = new Return (new SimpleName(field.Name, Location), Location);
-                       get_block.Block.AddStatement (r);
-                       get_block.ModFlags |= Modifiers.COMPILER_GENERATED;
-
-                       // Make set block
-                       Parameters parameters = new Parameters (new Parameter (type_name, "value", Parameter.Modifier.NONE, null, Location));
-                       set_block.Block = new ToplevelBlock (block, parameters, Location);
-                       Assign a = new SimpleAssign (new SimpleName (field.Name, Location), new SimpleName ("value", Location));
-                       set_block.Block.AddStatement (new StatementExpression(a));
-                       set_block.ModFlags |= Modifiers.COMPILER_GENERATED;
-               }
-
-               public Property (DeclSpace parent, FullNamedExpression type, int mod, bool is_iface,
+               public Property (DeclSpace parent, FullNamedExpression type, int mod,
                                 MemberName name, Attributes attrs, Accessor get_block,
                                 Accessor set_block, bool define_set_first)
-                       : this (parent, type, mod, is_iface, name, attrs, get_block, set_block,
+                       : this (parent, type, mod, name, attrs, get_block, set_block,
                                define_set_first, null)
                {
                }
                
-               public Property (DeclSpace parent, FullNamedExpression type, int mod, bool is_iface,
+               public Property (DeclSpace parent, FullNamedExpression type, int mod,
                                 MemberName name, Attributes attrs, Accessor get_block,
                                 Accessor set_block, bool define_set_first, Block current_block)
                        : base (parent, type, mod,
-                               is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
-                               is_iface, name, attrs, define_set_first)
+                               parent.PartialContainer.Kind == Kind.Interface ? AllowedInterfaceModifiers : AllowedModifiers,
+                               name, attrs, define_set_first)
                {
-                       if (!is_iface && (mod & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0 &&
-                               get_block != null && get_block.Block == null &&
-                               set_block != null && set_block.Block == null) {
-                               if (RootContext.Version <= LanguageVersion.ISO_2)
-                                       Report.FeatureIsNotAvailable (Location, "automatically implemented properties");
-                               
-                               CreateAutomaticProperty (current_block, get_block, set_block);
-                       }
-
                        if (get_block == null)
                                Get = new GetMethod (this);
                        else
@@ -6921,18 +6709,51 @@ namespace Mono.CSharp {
                                Set = new SetMethod (this);
                        else
                                Set = new SetMethod (this, set_block);
+
+                       if (!IsInterface && (mod & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0 &&
+                               get_block != null && get_block.Block == null &&
+                               set_block != null && set_block.Block == null) {
+                               if (RootContext.Version <= LanguageVersion.ISO_2)
+                                       Report.FeatureIsNotAvailable (Location, "automatically implemented properties");
+
+                               Get.ModFlags |= Modifiers.COMPILER_GENERATED;
+                               Set.ModFlags |= Modifiers.COMPILER_GENERATED;
+                       }
                }
 
-               public override bool Define ()
+               void CreateAutomaticProperty ()
                {
-                       if (!DoDefineBase ())
-                               return false;
+                       // Create backing field
+                       Field field = new Field (
+                               Parent, type_name,
+                               Modifiers.BACKING_FIELD | Modifiers.PRIVATE | (ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE)),
+                               new MemberName ("<" + GetFullName (MemberName) + ">k__BackingField", Location), null);
+                       if (!field.Define ())
+                               return;
+
+                       Parent.PartialContainer.AddField (field);
+
+                       // Create get block
+                       Get.Block = new ToplevelBlock (Parameters.EmptyReadOnlyParameters, Location);
+                       Return r = new Return (new SimpleName (field.Name, Location), Location);
+                       Get.Block.AddStatement (r);
+
+                       // Create set block
+                       Set.Block = new ToplevelBlock (Set.ParameterInfo, Location);
+                       Assign a = new SimpleAssign (new SimpleName (field.Name, Location), new SimpleName ("value", Location));
+                       Set.Block.AddStatement (new StatementExpression (a));
+               }
 
+               public override bool Define ()
+               {
                        if (!base.Define ())
                                return false;
 
                        flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
 
+                       if ((Get.ModFlags & Modifiers.COMPILER_GENERATED) != 0)
+                               CreateAutomaticProperty ();
+
                        if (!DefineAccessors ())
                                return false;
 
@@ -6959,10 +6780,21 @@ namespace Mono.CSharp {
                        return true;
                }
 
+               public override void Emit ()
+               {
+                       if (((Set.ModFlags | Get.ModFlags) & (Modifiers.STATIC | Modifiers.COMPILER_GENERATED)) == Modifiers.COMPILER_GENERATED && Parent.PartialContainer.HasExplicitLayout) {
+                               Report.Error (842, Location,
+                                       "Automatically implemented property `{0}' cannot be used inside a type with an explicit StructLayout attribute",
+                                       GetSignatureForError ());
+                       }
+
+                       base.Emit ();
+               }
+
                protected override PropertyInfo ResolveBaseProperty ()
                {
                        return Parent.PartialContainer.BaseCache.FindMemberToOverride (
-                               Parent.TypeBuilder, Name, Parameters.EmptyReadOnlyParameters.Types, null, true) as PropertyInfo;
+                               Parent.TypeBuilder, Name, Parameters.EmptyReadOnlyParameters, null, true) as PropertyInfo;
                }
        }
 
@@ -7118,12 +6950,9 @@ namespace Mono.CSharp {
        public class EventProperty: Event {
                abstract class AEventPropertyAccessor : AEventAccessor
                {
-                       readonly ArrayList anonymous_methods;
-
-                       public AEventPropertyAccessor (Event method, Accessor accessor, string prefix):
+                       protected AEventPropertyAccessor (Event method, Accessor accessor, string prefix):
                                base (method, accessor, prefix)
                        {
-                               this.anonymous_methods = accessor.AnonymousMethods;
                        }
 
                        public override MethodBuilder Define (DeclSpace ds)
@@ -7136,20 +6965,6 @@ namespace Mono.CSharp {
                        {
                                return method.GetSignatureForError () + "." + prefix.Substring (0, prefix.Length - 1);
                        }
-
-                       public override bool ResolveMembers ()
-                       {
-                               if (anonymous_methods == null)
-                                       return true;
-
-                               foreach (AnonymousMethodExpression ame in anonymous_methods) {
-                                       if (!ame.CreateAnonymousHelpers ())
-                                               return false;
-                               }
-
-                               return true;
-                       }
-
                }
 
                sealed class AddDelegateMethod: AEventPropertyAccessor
@@ -7184,9 +6999,9 @@ namespace Mono.CSharp {
                static readonly string[] attribute_targets = new string [] { "event" }; // "property" target was disabled for 2.0 version
 
                public EventProperty (DeclSpace parent, FullNamedExpression type, int mod_flags,
-                                     bool is_iface, MemberName name,
+                                     MemberName name,
                                      Attributes attrs, Accessor add, Accessor remove)
-                       : base (parent, type, mod_flags, is_iface, name, attrs)
+                       : base (parent, type, mod_flags, name, attrs)
                {
                        Add = new AddDelegateMethod (this, add);
                        Remove = new RemoveDelegateMethod (this, remove);
@@ -7221,6 +7036,10 @@ namespace Mono.CSharp {
 
                        protected override void EmitMethod(DeclSpace parent)
                        {
+                               if (method_data.implementing != null)
+                                       parent.PartialContainer.PendingImplementations.ImplementMethod (
+                                               Name, method.InterfaceType, method_data, method.IsExplicitImpl);
+                               
                                if ((method.ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
                                        return;
 
@@ -7288,10 +7107,8 @@ namespace Mono.CSharp {
                public FieldBuilder FieldBuilder;
                public Expression Initializer;
 
-               public EventField (DeclSpace parent, FullNamedExpression type, int mod_flags,
-                                  bool is_iface, MemberName name,
-                                  Attributes attrs)
-                       : base (parent, type, mod_flags, is_iface, name, attrs)
+               public EventField (DeclSpace parent, FullNamedExpression type, int mod_flags, MemberName name, Attributes attrs)
+                       : base (parent, type, mod_flags, name, attrs)
                {
                        Add = new AddDelegateMethod (this);
                        Remove = new RemoveDelegateMethod (this);
@@ -7345,7 +7162,7 @@ namespace Mono.CSharp {
                                }
 
                                ((TypeContainer) Parent).RegisterFieldForInitialization (this,
-                                       new FieldInitializer (FieldBuilder, Initializer));
+                                       new FieldInitializer (FieldBuilder, Initializer, this));
                        }
 
                        return true;
@@ -7381,10 +7198,6 @@ namespace Mono.CSharp {
                                this.ModFlags = method.ModFlags;
                        }
 
-                       public override Iterator Iterator {
-                               get { return null; }
-                       }
-
                        public bool IsInterfaceImplementation {
                                get { return method_data.implementing != null; }
                        }
@@ -7446,7 +7259,7 @@ namespace Mono.CSharp {
                        public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
                        {
                                return new EmitContext (
-                                       ds, method.Parent, Location, ig, ReturnType,
+                                       this, method.Parent, Location, ig, ReturnType,
                                        method.ModFlags, false);
                        }
 
@@ -7492,10 +7305,9 @@ namespace Mono.CSharp {
 
                Parameters parameters;
 
-               protected Event (DeclSpace parent, FullNamedExpression type, int mod_flags,
-                             bool is_iface, MemberName name, Attributes attrs)
+               protected Event (DeclSpace parent, FullNamedExpression type, int mod_flags, MemberName name, Attributes attrs)
                        : base (parent, null, type, mod_flags,
-                               is_iface ? AllowedInterfaceModifiers : AllowedModifiers, is_iface,
+                               parent.PartialContainer.Kind == Kind.Interface ? AllowedInterfaceModifiers : AllowedModifiers,
                                name, attrs)
                {
                }
@@ -7523,19 +7335,15 @@ namespace Mono.CSharp {
 
                public override bool Define ()
                {
-                       if (!DoDefineBase ())
-                               return false;
-
-                       if (!DoDefine ())
+                       if (!base.Define ())
                                return false;
 
                        if (!TypeManager.IsDelegateType (MemberType)) {
                                Report.Error (66, Location, "`{0}': event must be of a delegate type", GetSignatureForError ());
-                               return false;
                        }
 
                        parameters = Parameters.CreateFullyResolved (
-                               new Parameter (MemberType, "value", Parameter.Modifier.NONE, null, Location));
+                               new Parameter (null, "value", Parameter.Modifier.NONE, null, Location), MemberType);
 
                        if (!CheckBase ())
                                return false;
@@ -7594,8 +7402,8 @@ namespace Mono.CSharp {
                        if (mi == null)
                                return null;
 
-                       ParameterData pd = TypeManager.GetParameterData (mi);
-                       base_ret_type = pd.ParameterType (0);
+                       AParametersCollection pd = TypeManager.GetParameterData (mi);
+                       base_ret_type = pd.Types [0];
                        return mi;
                }
 
@@ -7610,16 +7418,26 @@ namespace Mono.CSharp {
  
        public class Indexer : PropertyBase
        {
-               class GetIndexerMethod : GetMethod
+               public class GetIndexerMethod : GetMethod
                {
-                       public GetIndexerMethod (PropertyBase method):
+                       Parameters parameters;
+
+                       public GetIndexerMethod (Indexer method):
                                base (method)
                        {
+                               this.parameters = method.parameters;
                        }
 
                        public GetIndexerMethod (PropertyBase method, Accessor accessor):
                                base (method, accessor)
                        {
+                               parameters = accessor.Parameters;
+                       }
+
+                       public override MethodBuilder Define (DeclSpace parent)
+                       {
+                               parameters.Resolve (ResolveContext);
+                               return base.Define (parent);
                        }
                        
                        public override bool EnableOverloadChecks (MemberCore overload)
@@ -7634,29 +7452,25 @@ namespace Mono.CSharp {
 
                        public override Parameters ParameterInfo {
                                get {
-                                       return ((Indexer)method).parameters;
+                                       return parameters;
                                }
                        }
                }
 
-               class SetIndexerMethod: SetMethod
+               public class SetIndexerMethod: SetMethod
                {
-                       public SetIndexerMethod (PropertyBase method):
+                       public SetIndexerMethod (Indexer method):
                                base (method)
                        {
+                               parameters = Parameters.MergeGenerated (method.parameters, false, parameters [0], null);
                        }
 
                        public SetIndexerMethod (PropertyBase method, Accessor accessor):
                                base (method, accessor)
                        {
+                               parameters = method.Get.IsDummy ? accessor.Parameters : accessor.Parameters.Clone ();                   
                        }
 
-                       protected override void DefineParameters ()
-                       {
-                               parameters = Parameters.MergeGenerated (((Indexer)method).parameters,
-                                       new Parameter (method.MemberType, "value", Parameter.Modifier.NONE, null, method.Location));
-                       }
-                       
                        public override bool EnableOverloadChecks (MemberCore overload)
                        {
                                if (base.EnableOverloadChecks (overload)) {
@@ -7665,7 +7479,7 @@ namespace Mono.CSharp {
                                }
 
                                return false;
-                       }                       
+                       }
                }
 
                const int AllowedModifiers =
@@ -7687,15 +7501,12 @@ namespace Mono.CSharp {
                public readonly Parameters parameters;
 
                public Indexer (DeclSpace parent, FullNamedExpression type, MemberName name, int mod,
-                               bool is_iface, Parameters parameters, Attributes attrs,
+                               Parameters parameters, Attributes attrs,
                                Accessor get_block, Accessor set_block, bool define_set_first)
                        : base (parent, type, mod,
-                               is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
-                               is_iface, name, attrs, define_set_first)
+                               parent.PartialContainer.Kind == Kind.Interface ? AllowedInterfaceModifiers : AllowedModifiers,
+                               name, attrs, define_set_first)
                {
-                       if (type == TypeManager.system_void_expr)
-                               Report.Error (620, name.Location, "An indexer return type cannot be `void'");
-                       
                        this.parameters = parameters;
 
                        if (get_block == null)
@@ -7708,12 +7519,14 @@ namespace Mono.CSharp {
                        else
                                Set = new SetIndexerMethod (this, set_block);
                }
+
+               protected override bool CheckForDuplications ()
+               {
+                       return Parent.MemberCache.CheckExistingMembersOverloads (this, GetFullName (MemberName), parameters);
+               }
                
                public override bool Define ()
                {
-                       if (!DoDefineBase ())
-                               return false;
-
                        if (!base.Define ())
                                return false;
 
@@ -7757,11 +7570,6 @@ namespace Mono.CSharp {
                                !Parent.PartialContainer.AddMember (Get) || !Parent.PartialContainer.AddMember (Set))
                                return false;
 
-                       if ((caching_flags & Flags.MethodOverloadsExist) != 0) {
-                               if (!Parent.MemberCache.CheckExistingMembersOverloads (this, Name, parameters))
-                                       return false;
-                       }
-
                        flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
                        
                        if (!DefineAccessors ())
@@ -7770,20 +7578,11 @@ namespace Mono.CSharp {
                        if (!CheckBase ())
                                return false;
 
-                       if (!Get.IsDummy) {
-                               // Setup iterator if we are one
-                               if ((ModFlags & Modifiers.METHOD_YIELDS) != 0){
-                                       Iterator iterator = Iterator.CreateIterator (Get, Parent, null, ModFlags);
-                                       if (iterator == null)
-                                               return false;
-                               }
-                       }
-
                        //
                        // Now name the parameters
                        //
                        PropertyBuilder = Parent.TypeBuilder.DefineProperty (
-                               GetFullName (MemberName), PropertyAttributes.None, MemberType, parameters.Types);
+                               GetFullName (MemberName), PropertyAttributes.None, MemberType, parameters.GetEmitTypes ());
 
                        if (!Get.IsDummy) {
                                PropertyBuilder.SetGetMethod (GetBuilder);
@@ -7795,7 +7594,7 @@ namespace Mono.CSharp {
                                Parent.MemberCache.AddMember (SetBuilder, Set);
                        }
                                
-                       TypeManager.RegisterIndexer (PropertyBuilder, GetBuilder, SetBuilder, parameters.Types);
+                       TypeManager.RegisterIndexer (PropertyBuilder, parameters);
                        Parent.MemberCache.AddMember (PropertyBuilder, this);
                        return true;
                }
@@ -7807,7 +7606,7 @@ namespace Mono.CSharp {
                                return true;
                        }
 
-                       return false;
+                       return base.EnableOverloadChecks (overload);
                }
 
                public override string GetDocCommentName (DeclSpace ds)
@@ -7831,7 +7630,7 @@ namespace Mono.CSharp {
                protected override PropertyInfo ResolveBaseProperty ()
                {
                        return Parent.PartialContainer.BaseCache.FindMemberToOverride (
-                               Parent.TypeBuilder, Name, parameters.Types, null, true) as PropertyInfo;
+                               Parent.TypeBuilder, Name, parameters, null, true) as PropertyInfo;
                }
 
                protected override bool VerifyClsCompliance ()
@@ -7844,7 +7643,7 @@ namespace Mono.CSharp {
                }
        }
 
-       public class Operator : MethodOrOperator, IAnonymousHost {
+       public class Operator : MethodOrOperator {
 
                const int AllowedModifiers =
                        Modifiers.PUBLIC |
@@ -7931,8 +7730,8 @@ namespace Mono.CSharp {
                public Operator (DeclSpace parent, OpType type, FullNamedExpression ret_type,
                                 int mod_flags, Parameters parameters,
                                 ToplevelBlock block, Attributes attrs, Location loc)
-                       : base (parent, null, ret_type, mod_flags, AllowedModifiers, false,
-                               new MemberName ("op_" + type.ToString(), loc), attrs, parameters)
+                       : base (parent, null, ret_type, mod_flags, AllowedModifiers,
+                               new MemberName (GetMetadataName (type), loc), attrs, parameters)
                {
                        OperatorType = type;
                        Block = block;
@@ -7953,7 +7752,6 @@ namespace Mono.CSharp {
                        const int RequiredModifiers = Modifiers.PUBLIC | Modifiers.STATIC;
                        if ((ModFlags & RequiredModifiers) != RequiredModifiers){
                                Report.Error (558, Location, "User-defined operator `{0}' must be declared static and public", GetSignatureForError ());
-                               return false;
                        }
 
                        if (!base.Define ())
@@ -7965,11 +7763,6 @@ namespace Mono.CSharp {
                        else if (OperatorType == OpType.Implicit)
                                Parent.MemberCache.CheckExistingMembersOverloads (this, GetMetadataName (OpType.Explicit), Parameters);
 
-                       if (MemberType == TypeManager.void_type) {
-                               Report.Error (590, Location, "User-defined operators cannot return void");
-                               return false;
-                       }
-
                        Type declaring_type = MethodData.DeclaringType;
                        Type return_type = MemberType;
                        Type first_arg_type = ParameterTypes [0];
@@ -8028,7 +7821,7 @@ namespace Mono.CSharp {
                                        }
                                }
                        } else if (OperatorType == OpType.LeftShift || OperatorType == OpType.RightShift) {
-                               if (first_arg_type != declaring_type || ParameterTypes [1] != TypeManager.int32_type) {
+                               if (first_arg_type != declaring_type || Parameters.Types [1] != TypeManager.int32_type) {
                                        Report.Error (564, Location, "Overloaded shift operator must have the type of the first operand be the containing type, and the type of the second operand must be int");
                                        return false;
                                }
@@ -8068,7 +7861,7 @@ namespace Mono.CSharp {
                                // Checks for Binary operators
                                
                                if (first_arg_type != declaring_type &&
-                                   ParameterTypes [1] != declaring_type){
+                                   Parameters.Types [1] != declaring_type){
                                        Report.Error (
                                                563, Location,
                                                "One of the parameters of a binary operator must " +
@@ -8080,41 +7873,14 @@ namespace Mono.CSharp {
                        return true;
                }
 
-               protected override bool DoDefine ()
+               protected override bool ResolveMemberType ()
                {
-                       if (!base.DoDefine ())
+                       if (!base.ResolveMemberType ())
                                return false;
 
                        flags |= MethodAttributes.SpecialName | MethodAttributes.HideBySig;
                        return true;
                }
-               
-               public override void Emit ()
-               {
-                       base.Emit ();
-
-                       Parameters.ApplyAttributes (MethodBuilder);
-
-                       //
-                       // abstract or extern methods have no bodies
-                       //
-                       if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
-                               return;
-                       
-                       EmitContext ec;
-                       if ((flags & MethodAttributes.PinvokeImpl) == 0)
-                               ec = CreateEmitContext (Parent, MethodBuilder.GetILGenerator ());
-                       else
-                               ec = CreateEmitContext (Parent, null);
-                       
-                       SourceMethod source = SourceMethod.Create (Parent, MethodBuilder, Block);
-                       ec.EmitTopBlock (this, Block);
-
-                       if (source != null)
-                               source.CloseMethod ();
-
-                       Block = null;
-               }
 
                // Operator cannot be override
                protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
@@ -8153,24 +7919,24 @@ namespace Mono.CSharp {
                public OpType GetMatchingOperator ()
                {
                        switch (OperatorType) {
-                               case OpType.Equality:
-                                       return OpType.Inequality;
-                               case OpType.Inequality:
-                                       return OpType.Equality;
-                               case OpType.True:
-                                       return OpType.False;
-                               case OpType.False:
-                                       return OpType.True;
-                               case OpType.GreaterThan:
-                                       return OpType.LessThan;
-                               case OpType.LessThan:
-                                       return OpType.GreaterThan;
-                               case OpType.GreaterThanOrEqual:
-                                       return OpType.LessThanOrEqual;
-                               case OpType.LessThanOrEqual:
-                                       return OpType.GreaterThanOrEqual;
-                               default:
-                                       return OpType.TOP;
+                       case OpType.Equality:
+                               return OpType.Inequality;
+                       case OpType.Inequality:
+                               return OpType.Equality;
+                       case OpType.True:
+                               return OpType.False;
+                       case OpType.False:
+                               return OpType.True;
+                       case OpType.GreaterThan:
+                               return OpType.LessThan;
+                       case OpType.LessThan:
+                               return OpType.GreaterThan;
+                       case OpType.GreaterThanOrEqual:
+                               return OpType.LessThanOrEqual;
+                       case OpType.LessThanOrEqual:
+                               return OpType.GreaterThanOrEqual;
+                       default:
+                               return OpType.TOP;
                        }
                }
 
@@ -8297,7 +8063,7 @@ namespace Mono.CSharp {
                        if (mi != null)
                                args = TypeManager.GetParameterData (mi).Types;
                        else
-                               args = TypeManager.GetArgumentTypes (pi);
+                               args = TypeManager.GetParameterData (pi).Types;
                        Type [] sigp = sig.Parameters;
 
                        if (args.Length != sigp.Length)