Updated mcs.

37 files changed, 9821 insertions, 7293 deletions

diff --git a/ICSharpCode.NRefactory.CSharp/Parser/CSharpParser.cs b/ICSharpCode.NRefactory.CSharp/Parser/CSharpParser.cs
index 0eb2ff70..76c3908a 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/CSharpParser.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/CSharpParser.cs
@@ -135,6 +135,21 @@ namespace ICSharpCode.NRefactory.CSharp
 
 			void AddTypeArguments(ATypeNameExpression texpr, AstType result)
 			{
+				var unbound = texpr.TypeArguments as UnboundTypeArguments;
+				if (unbound != null) { 
+					var loc2 = LocationsBag.GetLocations(texpr.TypeArguments);
+					if (loc2 == null)
+						return;
+					int j = 0;
+					if (j < loc2.Count)
+						result.AddChild(new CSharpTokenNode(Convert(loc2 [j++]), Roles.LChevron), Roles.LChevron);
+					while (j < loc2.Count - 1) {
+						result.AddChild(new CSharpTokenNode(Convert(loc2 [j++]), Roles.LChevron), Roles.Comma);
+					}
+					if (j < loc2.Count)
+						result.AddChild(new CSharpTokenNode(Convert(loc2 [j++]), Roles.RChevron), Roles.RChevron);
+					return;
+				}
 				if (texpr.TypeArguments == null || texpr.TypeArguments.Args == null)
 					return;
 				var loc = LocationsBag.GetLocations(texpr.TypeArguments);
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/anonymous.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/anonymous.cs
index 64ea6fa4..e7f00378 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/anonymous.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/anonymous.cs
@@ -1327,16 +1327,28 @@ namespace Mono.CSharp {
 			return Parameters;
 		}
 
-		protected override Expression DoResolve (ResolveContext ec)
+		protected override Expression DoResolve (ResolveContext rc)
 		{
-			if (ec.HasSet (ResolveContext.Options.ConstantScope)) {
-				ec.Report.Error (1706, loc, "Anonymous methods and lambda expressions cannot be used in the current context");
+			if (rc.HasSet (ResolveContext.Options.ConstantScope)) {
+				rc.Report.Error (1706, loc, "Anonymous methods and lambda expressions cannot be used in the current context");
 				return null;
 			}
 
 			//
-			// Set class type, set type
+			// Update top-level block generated duting parsing with actual top-level block
 			//
+			if (rc.HasAny (ResolveContext.Options.FieldInitializerScope | ResolveContext.Options.BaseInitializer) && rc.CurrentMemberDefinition.Parent.PartialContainer.PrimaryConstructorParameters != null) {
+				var tb = rc.ConstructorBlock.ParametersBlock.TopBlock;
+				if (Block.TopBlock != tb) {
+					Block b = Block;
+					while (b.Parent != Block.TopBlock && b != Block.TopBlock)
+						b = b.Parent;
+
+					b.Parent = tb;
+					tb.IncludeBlock (Block, Block.TopBlock);
+					b.ParametersBlock.TopBlock = tb;
+				}
+			}
 
 			eclass = ExprClass.Value;
 
@@ -1347,7 +1359,7 @@ namespace Mono.CSharp {
 			// 
 			type = InternalType.AnonymousMethod;
 
-			if (!DoResolveParameters (ec))
+			if (!DoResolveParameters (rc))
 				return null;
 
 			return this;
@@ -1732,6 +1744,7 @@ namespace Mono.CSharp {
 			Modifiers modifiers;
 			TypeDefinition parent = null;
 			TypeParameters hoisted_tparams = null;
+			ParametersCompiled method_parameters = parameters;
 
 			var src_block = Block.Original.Explicit;
 			if (src_block.HasCapturedVariable || src_block.HasCapturedThis) {
@@ -1779,6 +1792,14 @@ namespace Mono.CSharp {
 					parent = storey = ec.CurrentAnonymousMethod.Storey;
 
 				modifiers = Modifiers.STATIC | Modifiers.PRIVATE;
+
+				//
+				// Convert generated method to closed delegate method where unused
+				// this argument is generated during compilation which speeds up dispatch
+				// by about 25%
+				//
+				method_parameters = ParametersCompiled.Prefix (method_parameters,
+					new Parameter (null, null, 0, null, loc), ec.Module.Compiler.BuiltinTypes.Object);
 			}
 
 			if (storey == null && hoisted_tparams == null)
@@ -1804,7 +1825,7 @@ namespace Mono.CSharp {
 
 			return new AnonymousMethodMethod (parent,
 				this, storey, new TypeExpression (ReturnType, Location), modifiers,
-				member_name, parameters);
+				member_name, method_parameters);
 		}
 
 		protected override Expression DoResolve (ResolveContext ec)
@@ -1833,7 +1854,7 @@ namespace Mono.CSharp {
 			}
 
 			bool is_static = (method.ModFlags & Modifiers.STATIC) != 0;
-			if (is_static && am_cache == null) {
+			if (is_static && am_cache == null && !ec.IsStaticConstructor) {
 				//
 				// Creates a field cache to store delegate instance if it's not generic
 				//
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/argument.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/argument.cs
index 13d0526c..a5edeb53 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/argument.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/argument.cs
@@ -34,6 +34,11 @@ namespace Mono.CSharp
 			Default = 3,		// argument created from default parameter value
 			DynamicTypeName = 4,	// System.Type argument for dynamic binding
 			ExtensionType = 5,	// Instance expression inserted as the first argument
+
+			// Conditional instance expression inserted as the first argument
+			ExtensionTypeConditionalAccess = 5 | ConditionalAccessFlag,
+
+			ConditionalAccessFlag = 1 << 7
 		}
 
 		public readonly AType ArgType;
@@ -60,6 +65,12 @@ namespace Mono.CSharp
 			get { return ArgType == AType.Default; }
 		}
 
+		public bool IsExtensionType {
+			get {
+				return (ArgType & AType.ExtensionType) == AType.ExtensionType;
+			}
+		}
+
 		public Parameter.Modifier Modifier {
 			get {
 				switch (ArgType) {
@@ -105,7 +116,13 @@ namespace Mono.CSharp
 		public virtual void Emit (EmitContext ec)
 		{
 			if (!IsByRef) {
-				Expr.Emit (ec);
+				if (ArgType == AType.ExtensionTypeConditionalAccess) {
+					var ie = new InstanceEmitter (Expr, false);
+					ie.Emit (ec, true);
+				} else {
+					Expr.Emit (ec);
+				}
+
 				return;
 			}
 
@@ -276,6 +293,16 @@ namespace Mono.CSharp
 				ordered.Add (arg);
 			}
 
+			public override void FlowAnalysis (FlowAnalysisContext fc, List<MovableArgument> movable = null)
+			{
+				foreach (var arg in ordered) {
+					if (arg.ArgType != Argument.AType.Out)
+						arg.FlowAnalysis (fc);
+				}
+
+				base.FlowAnalysis (fc, ordered);
+			}
+
 			public override Arguments Emit (EmitContext ec, bool dup_args, bool prepareAwait)
 			{
 				foreach (var a in ordered) {
@@ -497,7 +524,7 @@ namespace Mono.CSharp
 			return null;
 		}
 
-		public void FlowAnalysis (FlowAnalysisContext fc)
+		public virtual void FlowAnalysis (FlowAnalysisContext fc, List<MovableArgument> movable = null)
 		{
 			bool has_out = false;
 			foreach (var arg in args) {
@@ -506,7 +533,14 @@ namespace Mono.CSharp
 					continue;
 				}
 
-				arg.FlowAnalysis (fc);
+				if (movable == null) {
+					arg.FlowAnalysis (fc);
+					continue;
+				}
+
+				var ma = arg as MovableArgument;
+				if (ma != null && !movable.Contains (ma))
+					arg.FlowAnalysis (fc);
 			}
 
 			if (!has_out)
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/assign.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/assign.cs
index 18c2d8ca..2bdc3331 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/assign.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/assign.cs
@@ -650,6 +650,7 @@ namespace Mono.CSharp {
 		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
 			source.FlowAnalysis (fc);
+			((FieldExpr) target).SetFieldAssigned (fc);
 		}
 		
 		public bool IsDefaultInitializer {
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/async.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/async.cs
index 671e53a5..68bbd3e1 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/async.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/async.cs
@@ -480,6 +480,24 @@ namespace Mono.CSharp
 			throw new NotImplementedException ();
 		}
 
+		public void EmitCatchBlock (EmitContext ec)
+		{
+			var catch_value = LocalVariable.CreateCompilerGenerated (ec.Module.Compiler.BuiltinTypes.Exception, block, Location);
+
+			ec.BeginCatchBlock (catch_value.Type);
+			catch_value.EmitAssign (ec);
+
+			ec.EmitThis ();
+			ec.EmitInt ((int) IteratorStorey.State.After);
+			ec.Emit (OpCodes.Stfld, storey.PC.Spec);
+
+			((AsyncTaskStorey) Storey).EmitSetException (ec, new LocalVariableReference (catch_value, Location));
+
+			ec.Emit (OpCodes.Leave, move_next_ok);
+			ec.EndExceptionBlock ();
+
+		}
+
 		protected override void EmitMoveNextEpilogue (EmitContext ec)
 		{
 			var storey = (AsyncTaskStorey) Storey;
@@ -807,7 +825,7 @@ namespace Mono.CSharp
 			args.Add (new Argument (awaiter, Argument.AType.Ref));
 			args.Add (new Argument (new CompilerGeneratedThis (CurrentType, Location), Argument.AType.Ref));
 			using (ec.With (BuilderContext.Options.OmitDebugInfo, true)) {
-				mg.EmitCall (ec, args);
+				mg.EmitCall (ec, args, true);
 			}
 		}
 
@@ -885,7 +903,7 @@ namespace Mono.CSharp
 			args.Add (new Argument (exceptionVariable));
 
 			using (ec.With (BuilderContext.Options.OmitDebugInfo, true)) {
-				mg.EmitCall (ec, args);
+				mg.EmitCall (ec, args, true);
 			}
 		}
 
@@ -909,7 +927,7 @@ namespace Mono.CSharp
 			}
 
 			using (ec.With (BuilderContext.Options.OmitDebugInfo, true)) {
-				mg.EmitCall (ec, args);
+				mg.EmitCall (ec, args, true);
 			}
 		}
 
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/cfold.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/cfold.cs
index 72f3a9c3..da85bf38 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/cfold.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/cfold.cs
@@ -309,10 +309,10 @@ namespace Mono.CSharp {
 						return new StringConstant (ec.BuiltinTypes, (string)left.GetValue () + (string)right.GetValue (),
 							left.Location);
 
-					if (lt == InternalType.NullLiteral)
+					if (lt == InternalType.NullLiteral || left.IsNull)
 						return new StringConstant (ec.BuiltinTypes, "" + right.GetValue (), left.Location);
 
-					if (rt == InternalType.NullLiteral)
+					if (rt == InternalType.NullLiteral || right.IsNull)
 						return new StringConstant (ec.BuiltinTypes, left.GetValue () + "", left.Location);
 
 					return null;
@@ -861,9 +861,22 @@ namespace Mono.CSharp {
 									 ((IntConstant) right).Value);
 
 						return new IntConstant (ec.BuiltinTypes, res, left.Location);
-					} else {
-						throw new Exception ( "Unexepected modulus input: " + left);
 					}
+
+					if (left is DecimalConstant) {
+						decimal res;
+
+						if (ec.ConstantCheckState)
+							res = checked (((DecimalConstant) left).Value %
+								((DecimalConstant) right).Value);
+						else
+							res = unchecked (((DecimalConstant) left).Value %
+								((DecimalConstant) right).Value);
+
+						return new DecimalConstant (ec.BuiltinTypes, res, left.Location);
+					}
+
+					throw new Exception ( "Unexepected modulus input: " + left);
 				} catch (DivideByZeroException){
 					ec.Report.Error (20, loc, "Division by constant zero");
 				} catch (OverflowException){
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/class.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/class.cs
index 02f1b654..ae4c0276 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/class.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/class.cs
@@ -553,7 +553,8 @@ namespace Mono.CSharp
 		public int AnonymousMethodsCounter;
 		public int MethodGroupsCounter;
 
-		static readonly string[] attribute_targets = new string[] { "type" };
+		static readonly string[] attribute_targets = new [] { "type" };
+		static readonly string[] attribute_targets_primary = new [] { "type", "method" };
 
 		/// <remarks>
 		///  The pending methods that need to be implemented
@@ -738,6 +739,10 @@ namespace Mono.CSharp
 
 		public ParametersCompiled PrimaryConstructorParameters { get; set; }
 
+		public Arguments PrimaryConstructorBaseArguments { get; set; }
+
+		public Location PrimaryConstructorBaseArgumentsStart { get; set; }
+
 		public TypeParameters TypeParametersAll {
 			get {
 				return all_type_parameters;
@@ -746,7 +751,7 @@ namespace Mono.CSharp
 
 		public override string[] ValidAttributeTargets {
 			get {
-				return attribute_targets;
+				return PrimaryConstructorParameters != null ? attribute_targets_primary : attribute_targets;
 			}
 		}
 
@@ -835,9 +840,6 @@ namespace Mono.CSharp
 			if (symbol is TypeParameter) {
 				Report.Error (692, symbol.Location,
 					"Duplicate type parameter `{0}'", symbol.GetSignatureForError ());
-			} else if (symbol is PrimaryConstructorField && mc is TypeParameter) {
-				Report.Error (9003, symbol.Location, "Primary constructor of type `{0}' has parameter of same name as type parameter `{1}'",
-					symbol.Parent.GetSignatureForError (), symbol.GetSignatureForError ());
 			} else {
 				Report.Error (102, symbol.Location,
 					"The type `{0}' already contains a definition for `{1}'",
@@ -916,6 +918,21 @@ namespace Mono.CSharp
 
 		public override void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
 		{
+			if (a.Target == AttributeTargets.Method) {
+				foreach (var m in members) {
+					var c = m as Constructor;
+					if (c == null)
+						continue;
+
+					if (c.IsPrimaryConstructor) {
+						c.ApplyAttributeBuilder (a, ctor, cdata, pa);
+						return;
+					}
+				}
+
+				throw new InternalErrorException ();
+			}
+
 			if (has_normal_indexers && a.Type == pa.DefaultMember) {
 				Report.Error (646, a.Location, "Cannot specify the `DefaultMember' attribute on type containing an indexer");
 				return;
@@ -1379,7 +1396,7 @@ namespace Mono.CSharp
 
 		public SourceMethodBuilder CreateMethodSymbolEntry ()
 		{
-			if (Module.DeclaringAssembly.SymbolWriter == null)
+			if (Module.DeclaringAssembly.SymbolWriter == null || (ModFlags & Modifiers.DEBUGGER_HIDDEN) != 0)
 				return null;
 
 			var source_file = GetCompilationSourceFile ();
@@ -1549,7 +1566,7 @@ namespace Mono.CSharp
 
 				if (PrimaryConstructorParameters != null) {
 					if (PartialContainer.PrimaryConstructorParameters != null) {
-						Report.Error (9001, Location, "Only one part of a partial type can declare primary constructor parameters");
+						Report.Error (8036, Location, "Only one part of a partial type can declare primary constructor parameters");
 					} else {
 						PartialContainer.PrimaryConstructorParameters = PrimaryConstructorParameters;
 					}
@@ -1582,6 +1599,10 @@ namespace Mono.CSharp
 			}
 
 			if (iface_exprs != null) {
+				if (!PrimaryConstructorBaseArgumentsStart.IsNull) {
+					Report.Error (8049, PrimaryConstructorBaseArgumentsStart, "Implemented interfaces cannot have arguments");
+				}
+
 				foreach (var iface_type in iface_exprs) {
 					// Prevents a crash, the interface might not have been resolved: 442144
 					if (iface_type == null)
@@ -1610,8 +1631,12 @@ namespace Mono.CSharp
 			// defined after current container
 			//
 			if (class_partial_parts != null) {
-				foreach (var pp in class_partial_parts)
+				foreach (var pp in class_partial_parts) {
+					if (pp.PrimaryConstructorBaseArguments != null)
+						PrimaryConstructorBaseArguments = pp.PrimaryConstructorBaseArguments;
+
 					pp.DoDefineBaseType ();
+				}
 
 			}
 
@@ -1798,7 +1823,7 @@ namespace Mono.CSharp
 
 		protected virtual bool DoResolveTypeParameters ()
 		{
-			var tparams = CurrentTypeParameters;
+			var tparams = MemberName.TypeParameters;
 			if (tparams == null)
 				return true;
 
@@ -1810,6 +1835,20 @@ namespace Mono.CSharp
 					error = true;
 					return false;
 				}
+
+				if (IsPartialPart) {
+					var pc_tp = PartialContainer.CurrentTypeParameters [i];
+
+					tp.Create (spec, this);
+					tp.Define (pc_tp);
+
+					if (tp.OptAttributes != null) {
+						if (pc_tp.OptAttributes == null)
+							pc_tp.OptAttributes = tp.OptAttributes;
+						else
+							pc_tp.OptAttributes.Attrs.AddRange (tp.OptAttributes.Attrs);
+					}
+				}
 			}
 
 			if (IsPartialPart) {
@@ -2562,7 +2601,7 @@ namespace Mono.CSharp
 		{
 		}
 
-		public Arguments PrimaryConstructorBaseArguments { get; set; }
+		public ToplevelBlock PrimaryConstructorBlock { get; set; }
 
 		protected override TypeAttributes TypeAttr {
 			get {
@@ -2592,12 +2631,6 @@ namespace Mono.CSharp
 					return;
 				}
 
-				if (symbol is PrimaryConstructorField) {
-					Report.Error (9004, symbol.Location, "Primary constructor of type `{0}' has parameter of same name as containing type",
-						symbol.Parent.GetSignatureForError ());
-					return;
-				}
-			
 				InterfaceMemberBase imb = symbol as InterfaceMemberBase;
 				if (imb == null || !imb.IsExplicitImpl) {
 					Report.SymbolRelatedToPreviousError (this);
@@ -2641,23 +2674,30 @@ namespace Mono.CSharp
 			// The default static constructor is private
 
 			Modifiers mods;
+			ParametersCompiled parameters = null;
 			if (is_static) {
 				mods = Modifiers.STATIC | Modifiers.PRIVATE;
+				parameters = ParametersCompiled.EmptyReadOnlyParameters;
 			} else {
 				mods = ((ModFlags & Modifiers.ABSTRACT) != 0) ? Modifiers.PROTECTED : Modifiers.PUBLIC;
+				parameters = PrimaryConstructorParameters ?? ParametersCompiled.EmptyReadOnlyParameters;
 			}
 
-			var c = new Constructor (this, MemberName.Name, mods, null, PrimaryConstructorParameters ?? ParametersCompiled.EmptyReadOnlyParameters, Location);
+			var c = new Constructor (this, MemberName.Name, mods, null, parameters, Location);
 			if (Kind == MemberKind.Class)
 				c.Initializer = new GeneratedBaseInitializer (Location, PrimaryConstructorBaseArguments);
 
-			if (PrimaryConstructorParameters != null)
+			if (PrimaryConstructorParameters != null && !is_static)
 				c.IsPrimaryConstructor = true;
 			
 			AddConstructor (c, true);
-			c.Block = new ToplevelBlock (Compiler, c.ParameterInfo, Location) {
-				IsCompilerGenerated = true
-			};
+			if (PrimaryConstructorBlock == null) {
+				c.Block = new ToplevelBlock (Compiler, parameters, Location) {
+					IsCompilerGenerated = true
+				};
+			} else {
+				c.Block = PrimaryConstructorBlock;
+			}
 
 			return c;
 		}
@@ -2668,14 +2708,20 @@ namespace Mono.CSharp
 
 			if (PrimaryConstructorParameters != null) {
 				foreach (Parameter p in PrimaryConstructorParameters.FixedParameters) {
-					if ((p.ModFlags & Parameter.Modifier.RefOutMask) != 0)
-						continue;
-
-					var f = new PrimaryConstructorField (this, p);
-					AddField (f);
+					if (p.Name == MemberName.Name) {
+						Report.Error (8039, p.Location, "Primary constructor of type `{0}' has parameter of same name as containing type",
+							GetSignatureForError ());
+					}
 
-					generated_primary_constructor.Block.AddStatement (
-						new StatementExpression (new PrimaryConstructorAssign (f, p), p.Location));
+					if (CurrentTypeParameters != null) {
+						for (int i = 0; i < CurrentTypeParameters.Count; ++i) {
+							var tp = CurrentTypeParameters [i];
+							if (p.Name == tp.Name) {
+								Report.Error (8038, p.Location, "Primary constructor of type `{0}' has parameter of same name as type parameter `{1}'",
+									GetSignatureForError (), p.GetSignatureForError ());
+							}
+						}
+					}
 				}
 			}
 
@@ -3058,6 +3104,20 @@ namespace Mono.CSharp
 			base.Emit ();
 		}
 
+		bool HasExplicitConstructor ()
+		{
+			foreach (var m in Members) {
+				var c = m as Constructor;
+				if (c == null)
+					continue;
+
+				if (!c.ParameterInfo.IsEmpty)
+					return true;
+			}
+
+			return false;
+		}
+
 		public override bool IsUnmanagedType ()
 		{
 			if (has_unmanaged_check_done)
@@ -3113,14 +3173,15 @@ namespace Mono.CSharp
 
 		public override void RegisterFieldForInitialization (MemberCore field, FieldInitializer expression)
 		{
-			if ((field.ModFlags & Modifiers.STATIC) == 0) {
-				Report.Error (573, field.Location, "`{0}': Structs cannot have instance field initializers",
+			if ((field.ModFlags & Modifiers.STATIC) == 0 && !HasExplicitConstructor ()) {
+				Report.Error (8054, field.Location, "`{0}': Structs without explicit constructors cannot contain members with initializers",
 					field.GetSignatureForError ());
+
 				return;
 			}
+
 			base.RegisterFieldForInitialization (field, expression);
 		}
-
 	}
 
 	/// <summary>
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/codegen.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/codegen.cs
index 7f7ccb33..55a061cf 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/codegen.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/codegen.cs
@@ -121,6 +121,8 @@ namespace Mono.CSharp
 			}
 		}
 
+		public ConditionalAccessContext ConditionalAccess { get; set; }
+
 		public TypeSpec CurrentType {
 			get { return member_context.CurrentType; }
 		}
@@ -155,6 +157,12 @@ namespace Mono.CSharp
 			get { return member_context.IsStatic; }
 		}
 
+		public bool IsStaticConstructor {
+			get {
+				return member_context.IsStatic && (flags & Options.ConstructorScope) != 0;
+			}
+		}
+
 		public bool IsAnonymousStoreyMutateRequired {
 			get {
 				return CurrentAnonymousMethod != null &&
@@ -344,6 +352,15 @@ namespace Mono.CSharp
 #endif
 		}
 
+		public void CloseConditionalAccess (TypeSpec type)
+		{
+			if (type != null)
+				Emit (OpCodes.Newobj, Nullable.NullableInfo.GetConstructor (type));
+
+			MarkLabel (ConditionalAccess.EndLabel);
+			ConditionalAccess = null;
+		}
+
 		//
 		// Creates a nested container in this context for all dynamic compiler generated stuff
 		//
@@ -534,8 +551,8 @@ namespace Mono.CSharp
 				// bool array can actually store any byte value
 				//
 				ig.Emit (OpCodes.Ldelem_U1);
-				ig.Emit (OpCodes.Ldc_I4_1);
-				ig.Emit (OpCodes.And);
+				ig.Emit (OpCodes.Ldc_I4_0);
+				ig.Emit (OpCodes.Cgt_Un);
 				break;
 			case BuiltinTypeSpec.Type.Byte:
 				ig.Emit (OpCodes.Ldelem_U1);
@@ -756,8 +773,8 @@ namespace Mono.CSharp
 				break;
 			case BuiltinTypeSpec.Type.Bool:
 				ig.Emit (OpCodes.Ldind_I1);
-				ig.Emit (OpCodes.Ldc_I4_1);
-				ig.Emit (OpCodes.And);
+				ig.Emit (OpCodes.Ldc_I4_0);
+				ig.Emit (OpCodes.Cgt_Un);
 				break;
 			case BuiltinTypeSpec.Type.ULong:
 			case BuiltinTypeSpec.Type.Long:
@@ -972,12 +989,25 @@ namespace Mono.CSharp
 		}
 	}
 
+	public class ConditionalAccessContext
+	{
+		public ConditionalAccessContext (TypeSpec type, Label endLabel)
+		{
+			Type = type;
+			EndLabel = endLabel;
+		}
+
+		public bool Statement { get; set; }
+		public Label EndLabel { get; private set; }
+		public TypeSpec Type { get; private set; }
+	}
+
 	struct CallEmitter
 	{
 		public Expression InstanceExpression;
 
 		//
-		// When set leaves an extra copy of all arguments on the stack
+		// When call has to leave an extra copy of all arguments on the stack
 		//
 		public bool DuplicateArguments;
 
@@ -992,6 +1022,8 @@ namespace Mono.CSharp
 		//
 		public bool HasAwaitArguments;
 
+		public bool ConditionalAccess;
+
 		//
 		// When dealing with await arguments the original arguments are converted
 		// into a new set with hoisted stack results
@@ -1000,10 +1032,15 @@ namespace Mono.CSharp
 
 		public void Emit (EmitContext ec, MethodSpec method, Arguments Arguments, Location loc)
 		{
-			EmitPredefined (ec, method, Arguments, loc);
+			EmitPredefined (ec, method, Arguments, false, loc);
 		}
 
-		public void EmitPredefined (EmitContext ec, MethodSpec method, Arguments Arguments, Location? loc = null)
+		public void EmitStatement (EmitContext ec, MethodSpec method, Arguments Arguments, Location loc)
+		{
+			EmitPredefined (ec, method, Arguments, true, loc);
+		}
+
+		public void EmitPredefined (EmitContext ec, MethodSpec method, Arguments Arguments, bool statement = false, Location? loc = null)
 		{
 			Expression instance_copy = null;
 
@@ -1020,23 +1057,23 @@ namespace Mono.CSharp
 			if (method.IsStatic) {
 				call_op = OpCodes.Call;
 			} else {
-				if (IsVirtualCallRequired (InstanceExpression, method)) {
-					call_op = OpCodes.Callvirt;
-				} else {
-					call_op = OpCodes.Call;
-				}
+				call_op = IsVirtualCallRequired (InstanceExpression, method) ? OpCodes.Callvirt : OpCodes.Call;
 
 				if (HasAwaitArguments) {
 					instance_copy = InstanceExpression.EmitToField (ec);
-					if (Arguments == null)
-						EmitCallInstance (ec, instance_copy, method.DeclaringType, call_op);
+					var ie = new InstanceEmitter (instance_copy, IsAddressCall (instance_copy, call_op, method.DeclaringType));
+
+					if (Arguments == null) {
+						ie.EmitLoad (ec);
+					}
 				} else if (!InstanceExpressionOnStack) {
-					var instance_on_stack_type = EmitCallInstance (ec, InstanceExpression, method.DeclaringType, call_op);
+					var ie = new InstanceEmitter (InstanceExpression, IsAddressCall (InstanceExpression, call_op, method.DeclaringType));
+					ie.Emit (ec, ConditionalAccess);
 
 					if (DuplicateArguments) {
 						ec.Emit (OpCodes.Dup);
 						if (Arguments != null && Arguments.Count != 0) {
-							lt = new LocalTemporary (instance_on_stack_type);
+							lt = new LocalTemporary (ie.GetStackType (ec));
 							lt.Store (ec);
 							instance_copy = lt;
 						}
@@ -1048,7 +1085,8 @@ namespace Mono.CSharp
 				EmittedArguments = Arguments.Emit (ec, DuplicateArguments, HasAwaitArguments);
 				if (EmittedArguments != null) {
 					if (instance_copy != null) {
-						EmitCallInstance (ec, instance_copy, method.DeclaringType, call_op);
+						var ie = new InstanceEmitter (instance_copy, IsAddressCall (instance_copy, call_op, method.DeclaringType));
+						ie.Emit (ec, ConditionalAccess);
 
 						if (lt != null)
 							lt.Release (ec);
@@ -1079,27 +1117,177 @@ namespace Mono.CSharp
 			if (method.Parameters.HasArglist) {
 				var varargs_types = GetVarargsTypes (method, Arguments);
 				ec.Emit (call_op, method, varargs_types);
-				return;
+			} else {
+				//
+				// If you have:
+				// this.DoFoo ();
+				// and DoFoo is not virtual, you can omit the callvirt,
+				// because you don't need the null checking behavior.
+				//
+				ec.Emit (call_op, method);
 			}
 
+			// 
+			// Pop the return value if there is one and stack should be empty
 			//
-			// If you have:
-			// this.DoFoo ();
-			// and DoFoo is not virtual, you can omit the callvirt,
-			// because you don't need the null checking behavior.
+			if (statement && method.ReturnType.Kind != MemberKind.Void)
+				ec.Emit (OpCodes.Pop);
+		}
+
+		static MetaType[] GetVarargsTypes (MethodSpec method, Arguments arguments)
+		{
+			AParametersCollection pd = method.Parameters;
+
+			Argument a = arguments[pd.Count - 1];
+			Arglist list = (Arglist) a.Expr;
+
+			return list.ArgumentTypes;
+		}
+
+		//
+		// Used to decide whether call or callvirt is needed
+		//
+		static bool IsVirtualCallRequired (Expression instance, MethodSpec method)
+		{
 			//
-			ec.Emit (call_op, method);
+			// There are 2 scenarious where we emit callvirt
+			//
+			// Case 1: A method is virtual and it's not used to call base
+			// Case 2: A method instance expression can be null. In this casen callvirt ensures
+			// correct NRE exception when the method is called
+			//
+			var decl_type = method.DeclaringType;
+			if (decl_type.IsStruct || decl_type.IsEnum)
+				return false;
+
+			if (instance is BaseThis)
+				return false;
+
+			//
+			// It's non-virtual and will never be null and it can be determined
+			// whether it's known value or reference type by verifier
+			//
+			if (!method.IsVirtual && Expression.IsNeverNull (instance) && !instance.Type.IsGenericParameter)
+				return false;
+
+			return true;
 		}
 
-		static TypeSpec EmitCallInstance (EmitContext ec, Expression instance, TypeSpec declaringType, OpCode callOpcode)
+		static bool IsAddressCall (Expression instance, OpCode callOpcode, TypeSpec declaringType)
+		{
+			var instance_type = instance.Type;
+			return (instance_type.IsStructOrEnum && (callOpcode == OpCodes.Callvirt || (callOpcode == OpCodes.Call && declaringType.IsStruct))) ||
+				instance_type.IsGenericParameter || declaringType.IsNullableType;
+		}
+	}
+
+	public struct InstanceEmitter
+	{
+		readonly Expression instance;
+		readonly bool addressRequired;
+
+		public InstanceEmitter (Expression instance, bool addressLoad)
+		{
+			this.instance = instance;
+			this.addressRequired = addressLoad;
+		}
+
+		public void Emit (EmitContext ec, bool conditionalAccess)
+		{
+			Label NullOperatorLabel;
+			Nullable.Unwrap unwrap;
+
+			if (conditionalAccess && Expression.IsNeverNull (instance))
+				conditionalAccess = false;
+
+			if (conditionalAccess) {
+				NullOperatorLabel = ec.DefineLabel ();
+				unwrap = instance as Nullable.Unwrap;
+			} else {
+				NullOperatorLabel = new Label ();
+				unwrap = null;
+			}
+
+			IMemoryLocation instance_address = null;
+			bool conditional_access_dup = false;
+
+			if (unwrap != null) {
+				unwrap.Store (ec);
+				unwrap.EmitCheck (ec);
+				ec.Emit (OpCodes.Brtrue_S, NullOperatorLabel);
+			} else {
+				if (conditionalAccess && addressRequired) {
+					//
+					// Don't allocate temp variable when instance load is cheap and load and load-address
+					// operate on same memory
+					//
+					instance_address = instance as VariableReference;
+					if (instance_address == null)
+						instance_address = instance as LocalTemporary;
+
+					if (instance_address == null) {
+						EmitLoad (ec);
+						ec.Emit (OpCodes.Dup);
+						ec.EmitLoadFromPtr (instance.Type);
+
+						conditional_access_dup = true;
+					} else {
+						instance.Emit (ec);
+					}
+
+					if (instance.Type.Kind == MemberKind.TypeParameter)
+						ec.Emit (OpCodes.Box, instance.Type);
+				} else {
+					EmitLoad (ec);
+
+					if (conditionalAccess) {
+						conditional_access_dup = !IsInexpensiveLoad ();
+						if (conditional_access_dup)
+							ec.Emit (OpCodes.Dup);
+					}
+				}
+
+				if (conditionalAccess) {
+					ec.Emit (OpCodes.Brtrue_S, NullOperatorLabel);
+
+					if (conditional_access_dup)
+						ec.Emit (OpCodes.Pop);
+				}
+			}
+
+			if (conditionalAccess) {
+				if (!ec.ConditionalAccess.Statement) {
+					if (ec.ConditionalAccess.Type.IsNullableType)
+						Nullable.LiftedNull.Create (ec.ConditionalAccess.Type, Location.Null).Emit (ec);
+					else
+						ec.EmitNull ();
+				}
+
+				ec.Emit (OpCodes.Br, ec.ConditionalAccess.EndLabel);
+				ec.MarkLabel (NullOperatorLabel);
+
+				if (instance_address != null) {
+					instance_address.AddressOf (ec, AddressOp.Load);
+				} else if (unwrap != null) {
+					unwrap.Emit (ec);
+					var tmp = ec.GetTemporaryLocal (unwrap.Type);
+					ec.Emit (OpCodes.Stloc, tmp);
+					ec.Emit (OpCodes.Ldloca, tmp);
+					ec.FreeTemporaryLocal (tmp, unwrap.Type);
+				} else if (!conditional_access_dup) {
+					instance.Emit (ec);
+				}
+			}
+		}
+
+		public void EmitLoad (EmitContext ec)
 		{
 			var instance_type = instance.Type;
 
 			//
 			// Push the instance expression
 			//
-			if ((instance_type.IsStructOrEnum && (callOpcode == OpCodes.Callvirt || (callOpcode == OpCodes.Call && declaringType.IsStruct))) ||
-				instance_type.IsGenericParameter || declaringType.IsNullableType) {
+			if (addressRequired) {
 				//
 				// If the expression implements IMemoryLocation, then
 				// we can optimize and use AddressOf on the
@@ -1117,57 +1305,61 @@ namespace Mono.CSharp
 					temp.AddressOf (ec, AddressOp.Load);
 				}
 
-				return ReferenceContainer.MakeType (ec.Module, instance_type);
+				return;
 			}
 
-			if (instance_type.IsStructOrEnum) {
-				instance.Emit (ec);
+			instance.Emit (ec);
+
+			// Only to make verifier happy
+			if (RequiresBoxing ())
 				ec.Emit (OpCodes.Box, instance_type);
-				return ec.BuiltinTypes.Object;
-			}
+		}
+
+		public TypeSpec GetStackType (EmitContext ec)
+		{
+			var instance_type = instance.Type;
+
+			if (addressRequired)
+				return ReferenceContainer.MakeType (ec.Module, instance_type);
+
+			if (instance_type.IsStructOrEnum)
+				return ec.Module.Compiler.BuiltinTypes.Object;
 
-			instance.Emit (ec);
 			return instance_type;
 		}
 
-		static MetaType[] GetVarargsTypes (MethodSpec method, Arguments arguments)
+		bool RequiresBoxing ()
 		{
-			AParametersCollection pd = method.Parameters;
+			var instance_type = instance.Type;
+			if (instance_type.IsGenericParameter && !(instance is This) && TypeSpec.IsReferenceType (instance_type))
+				return true;
 
-			Argument a = arguments[pd.Count - 1];
-			Arglist list = (Arglist) a.Expr;
+			if (instance_type.IsStructOrEnum)
+				return true;
 
-			return list.ArgumentTypes;
+			return false;
 		}
 
-		//
-		// Used to decide whether call or callvirt is needed
-		//
-		static bool IsVirtualCallRequired (Expression instance, MethodSpec method)
+		bool IsInexpensiveLoad ()
 		{
-			//
-			// There are 2 scenarious where we emit callvirt
-			//
-			// Case 1: A method is virtual and it's not used to call base
-			// Case 2: A method instance expression can be null. In this casen callvirt ensures
-			// correct NRE exception when the method is called
-			//
-			var decl_type = method.DeclaringType;
-			if (decl_type.IsStruct || decl_type.IsEnum)
-				return false;
+			if (instance is Constant)
+				return instance.IsSideEffectFree;
 
-			if (instance is BaseThis)
+			if (RequiresBoxing ())
 				return false;
 
-			//
-			// It's non-virtual and will never be null and it can be determined
-			// whether it's known value or reference type by verifier
-			//
-			if (!method.IsVirtual && (instance is This || instance is New || instance is ArrayCreation || instance is DelegateCreation) &&
-				!instance.Type.IsGenericParameter)
-				return false;
+			var vr = instance as VariableReference;
+			if (vr != null)
+				return !vr.IsRef;
 
-			return true;
+			if (instance is LocalTemporary)
+				return true;
+
+			var fe = instance as FieldExpr;
+			if (fe != null)
+				return fe.IsStatic || fe.InstanceExpression is This;
+
+			return false;
 		}
 	}
 }
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/constant.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/constant.cs
index 36f4a62a..a50baacc 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/constant.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/constant.cs
@@ -2037,8 +2037,6 @@ namespace Mono.CSharp {
 	}
 
 	public class StringConstant : Constant {
-		public readonly string Value;
-
 		public StringConstant (BuiltinTypes types, string s, Location loc)
 			: this (types.String, s, loc)
 		{
@@ -2053,6 +2051,13 @@ namespace Mono.CSharp {
 			Value = s;
 		}
 
+		protected StringConstant (Location loc)
+			: base (loc)
+		{
+		}
+
+		public string Value { get; protected set; }
+
 		public override object GetValue ()
 		{
 			return Value;
@@ -2135,6 +2140,113 @@ namespace Mono.CSharp {
 		}
 	}
 
+	class NameOf : StringConstant
+	{
+		readonly SimpleName name;
+
+		public NameOf (SimpleName name)
+			: base (name.Location)
+		{
+			this.name = name;
+		}
+
+		protected override Expression DoResolve (ResolveContext rc)
+		{
+			throw new NotSupportedException ();
+		}
+
+		bool ResolveArgumentExpression (ResolveContext rc, Expression expr)
+		{
+			var sn = expr as SimpleName;
+			if (sn != null) {
+				Value = sn.Name;
+
+				if (rc.Module.Compiler.Settings.Version < LanguageVersion.V_6)
+					rc.Report.FeatureIsNotAvailable (rc.Module.Compiler, Location, "nameof operator");
+
+				if (sn.HasTypeArguments) {
+					// TODO: csc compatible but unhelpful error message
+					rc.Report.Error (1001, loc, "Identifier expected");
+					return true;
+				}
+
+				sn.LookupNameExpression (rc, MemberLookupRestrictions.IgnoreArity | MemberLookupRestrictions.IgnoreAmbiguity);
+				return true;
+			}
+
+			var ma = expr as MemberAccess;
+			if (ma != null) {
+				FullNamedExpression fne = ma.LeftExpression as ATypeNameExpression;
+				if (fne == null) {
+					var qam = ma as QualifiedAliasMember;
+					if (qam == null)
+						return false;
+
+					fne = qam.CreateExpressionFromAlias (rc);
+					if (fne == null)
+						return true;
+				}
+
+				Value = ma.Name;
+
+				if (rc.Module.Compiler.Settings.Version < LanguageVersion.V_6)
+					rc.Report.FeatureIsNotAvailable (rc.Module.Compiler, Location, "nameof operator");
+
+				if (ma.HasTypeArguments) {
+					// TODO: csc compatible but unhelpful error message
+					rc.Report.Error (1001, loc, "Identifier expected");
+					return true;
+				}
+					
+				var left = fne.ResolveAsTypeOrNamespace (rc, true);
+				if (left == null)
+					return true;
+
+				var ns = left as NamespaceExpression;
+				if (ns != null) {
+					FullNamedExpression retval = ns.LookupTypeOrNamespace (rc, ma.Name, 0, LookupMode.NameOf, loc);
+					if (retval == null)
+						ns.Error_NamespaceDoesNotExist (rc, ma.Name, 0);
+
+					return true;
+				}
+
+				if (left.Type.IsGenericOrParentIsGeneric && left.Type.GetDefinition () != left.Type) {
+					rc.Report.Error (8071, loc, "Type arguments are not allowed in the nameof operator");
+				}
+
+				var mexpr = MemberLookup (rc, false, left.Type, ma.Name, 0, MemberLookupRestrictions.IgnoreArity | MemberLookupRestrictions.IgnoreAmbiguity, loc);
+				if (mexpr == null) {
+					ma.Error_IdentifierNotFound (rc, left.Type);
+					return true;
+				}
+
+				return true;
+			}
+
+			return false;
+		}
+
+		public Expression ResolveOverload (ResolveContext rc, Arguments args)
+		{
+			if (args == null || args.Count != 1) {
+				name.Error_NameDoesNotExist (rc);
+				return null;
+			}
+
+			var arg = args [0];
+			var res = ResolveArgumentExpression (rc, arg.Expr);
+			if (!res) {
+				name.Error_NameDoesNotExist (rc);
+				return null;
+			}
+
+			type = rc.BuiltinTypes.String;
+			eclass = ExprClass.Value;
+			return this;
+		}
+	}
+
 	//
 	// Null constant can have its own type, think of `default (Foo)'
 	//
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/context.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/context.cs
index 873c92d2..230aa125 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/context.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/context.cs
@@ -14,6 +14,7 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Security.Cryptography;
+using System.Diagnostics;
 
 namespace Mono.CSharp
 {
@@ -21,7 +22,8 @@ namespace Mono.CSharp
 	{
 		Normal = 0,
 		Probing = 1,
-		IgnoreAccessibility = 2
+		IgnoreAccessibility = 2,
+		NameOf = 3
 	}
 
 	//
@@ -188,6 +190,8 @@ namespace Mono.CSharp
 
 			TryWithCatchScope = 1 << 15,
 
+			ConditionalAccessReceiver = 1 << 16,
+
 			///
 			/// Indicates the current context is in probing mode, no errors are reported. 
 			///
@@ -442,6 +446,7 @@ namespace Mono.CSharp
 	public class FlowAnalysisContext
 	{
 		readonly CompilerContext ctx;
+		DefiniteAssignmentBitSet conditional_access;
 
 		public FlowAnalysisContext (CompilerContext ctx, ParametersBlock parametersBlock, int definiteAssignmentLength)
 		{
@@ -483,6 +488,19 @@ namespace Mono.CSharp
 			return dat;
 		}
 
+		public void BranchConditionalAccessDefiniteAssignment ()
+		{
+			if (conditional_access == null)
+				conditional_access = BranchDefiniteAssignment ();
+		}
+
+		public void ConditionalAccessEnd ()
+		{
+			Debug.Assert (conditional_access != null);
+			DefiniteAssignment = conditional_access;
+			conditional_access = null;
+		}
+
 		public bool IsDefinitelyAssigned (VariableInfo variable)
 		{
 			return variable.IsAssigned (DefiniteAssignment);
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/convert.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/convert.cs
index 00be96b4..065c9a7e 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/convert.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/convert.cs
@@ -27,6 +27,15 @@ namespace Mono.CSharp {
 	//
 	static class Convert
 	{
+		[Flags]
+		public enum UserConversionRestriction
+		{
+			None = 0,
+			ImplicitOnly = 1,
+			ProbingOnly = 1 << 1,
+			NullableSourceOnly = 1 << 2
+
+		}
 		//
 		// From a one-dimensional array-type S[] to System.Collections.IList<T> and base
 		// interfaces of this interface, provided there is an implicit reference conversion
@@ -336,7 +345,7 @@ namespace Mono.CSharp {
 					if (target_type.Kind == MemberKind.InternalCompilerType)
 						return target_type.BuiltinType == BuiltinTypeSpec.Type.Dynamic;
 
-					return TypeSpec.IsReferenceType (target_type);
+					return TypeSpec.IsReferenceType (target_type) || target_type.Kind == MemberKind.PointerType;
 				}
 
 				//
@@ -675,7 +684,7 @@ namespace Mono.CSharp {
 		//
 		public static bool ImplicitConversionExists (ResolveContext ec, Expression expr, TypeSpec target_type)
 		{
-			if (ImplicitStandardConversionExists (expr, target_type))
+			if (ImplicitStandardConversionExists (ec, expr, target_type))
 				return true;
 
 			if (expr.Type == InternalType.AnonymousMethod) {
@@ -686,21 +695,27 @@ namespace Mono.CSharp {
 				return ame.ImplicitStandardConversionExists (ec, target_type);
 			}
 			
+			// Conversion from __arglist to System.ArgIterator
+			if (expr.Type == InternalType.Arglist)
+				return target_type == ec.Module.PredefinedTypes.ArgIterator.TypeSpec;
+
+			return UserDefinedConversion (ec, expr, target_type,
+				UserConversionRestriction.ImplicitOnly | UserConversionRestriction.ProbingOnly, Location.Null) != null;
+		}
+
+		public static bool ImplicitStandardConversionExists (ResolveContext rc, Expression expr, TypeSpec target_type)
+		{
 			if (expr.eclass == ExprClass.MethodGroup) {
-				if (target_type.IsDelegate && ec.Module.Compiler.Settings.Version != LanguageVersion.ISO_1) {
+				if (target_type.IsDelegate && rc.Module.Compiler.Settings.Version != LanguageVersion.ISO_1) {
 					MethodGroupExpr mg = expr as MethodGroupExpr;
 					if (mg != null)
-						return DelegateCreation.ImplicitStandardConversionExists (ec, mg, target_type);
+						return DelegateCreation.ImplicitStandardConversionExists (rc, mg, target_type);
 				}
 
 				return false;
 			}
 
-			// Conversion from __arglist to System.ArgIterator
-			if (expr.Type == InternalType.Arglist)
-				return target_type == ec.Module.PredefinedTypes.ArgIterator.TypeSpec;
-
-			return UserDefinedConversion (ec, expr, target_type, true, true, Location.Null) != null;
+			return ImplicitStandardConversionExists (expr, target_type);
 		}
 
 		//
@@ -911,7 +926,7 @@ namespace Mono.CSharp {
 		// by making use of FindMostEncomp* methods. Applies the correct rules separately
 		// for explicit and implicit conversion operators.
 		//
-		static TypeSpec FindMostSpecificSource (List<MethodSpec> list, TypeSpec sourceType, Expression source, bool apply_explicit_conv_rules)
+		static TypeSpec FindMostSpecificSource (ResolveContext rc, List<MethodSpec> list, TypeSpec sourceType, Expression source, bool apply_explicit_conv_rules)
 		{
 			TypeSpec[] src_types_set = null;
 
@@ -937,12 +952,16 @@ namespace Mono.CSharp {
 				var candidate_set = new List<TypeSpec> ();
 
 				foreach (TypeSpec param_type in src_types_set){
-					if (ImplicitStandardConversionExists (source, param_type))
+					if (ImplicitStandardConversionExists (rc, source, param_type))
 						candidate_set.Add (param_type);
 				}
 
-				if (candidate_set.Count != 0)
+				if (candidate_set.Count != 0) {
+					if (source.eclass == ExprClass.MethodGroup)
+						return InternalType.FakeInternalType;
+
 					return FindMostEncompassedType (candidate_set);
+				}
 			}
 
 			//
@@ -1010,7 +1029,7 @@ namespace Mono.CSharp {
 		/// </summary>
 		static public Expression ImplicitUserConversion (ResolveContext ec, Expression source, TypeSpec target, Location loc)
 		{
-			return UserDefinedConversion (ec, source, target, true, false, loc);
+			return UserDefinedConversion (ec, source, target, UserConversionRestriction.ImplicitOnly, loc);
 		}
 
 		/// <summary>
@@ -1018,10 +1037,10 @@ namespace Mono.CSharp {
 		/// </summary>
 		static Expression ExplicitUserConversion (ResolveContext ec, Expression source, TypeSpec target, Location loc)
 		{
-			return UserDefinedConversion (ec, source, target, false, false, loc);
+			return UserDefinedConversion (ec, source, target, 0, loc);
 		}
 
-		static void FindApplicableUserDefinedConversionOperators (IList<MemberSpec> operators, Expression source, TypeSpec target, bool implicitOnly, ref List<MethodSpec> candidates)
+		static void FindApplicableUserDefinedConversionOperators (ResolveContext rc, IList<MemberSpec> operators, Expression source, TypeSpec target, UserConversionRestriction restr, ref List<MethodSpec> candidates)
 		{
 			if (source.Type.IsInterface) {
 				// Neither A nor B are interface-types
@@ -1043,14 +1062,17 @@ namespace Mono.CSharp {
 					continue;
 
 				var t = op.Parameters.Types[0];
-				if (source.Type != t && !ImplicitStandardConversionExists (source, t)) {
-					if (implicitOnly)
+				if (source.Type != t && !ImplicitStandardConversionExists (rc, source, t)) {
+					if ((restr & UserConversionRestriction.ImplicitOnly) != 0)
 						continue;
 
 					if (!ImplicitStandardConversionExists (new EmptyExpression (t), source.Type))
-						continue;
+							continue;
 				}
 
+				if ((restr & UserConversionRestriction.NullableSourceOnly) != 0 && !t.IsNullableType)
+					continue;
+
 				t = op.ReturnType;
 
 				if (t.IsInterface)
@@ -1061,7 +1083,7 @@ namespace Mono.CSharp {
 						t = Nullable.NullableInfo.GetUnderlyingType (t);
 
 					if (!ImplicitStandardConversionExists (new EmptyExpression (t), target)) {
-						if (implicitOnly)
+						if ((restr & UserConversionRestriction.ImplicitOnly) != 0)
 							continue;
 
 						if (texpr == null)
@@ -1082,7 +1104,7 @@ namespace Mono.CSharp {
 		//
 		// User-defined conversions
 		//
-		static Expression UserDefinedConversion (ResolveContext ec, Expression source, TypeSpec target, bool implicitOnly, bool probingOnly, Location loc)
+		public static Expression UserDefinedConversion (ResolveContext rc, Expression source, TypeSpec target, UserConversionRestriction restr, Location loc)
 		{
 			List<MethodSpec> candidates = null;
 
@@ -1094,6 +1116,7 @@ namespace Mono.CSharp {
 			TypeSpec target_type = target;
 			Expression source_type_expr;
 			bool nullable_source = false;
+			var implicitOnly = (restr & UserConversionRestriction.ImplicitOnly) != 0;
 
 			if (source_type.IsNullableType) {
 				// No unwrapping conversion S? -> T for non-reference types
@@ -1119,13 +1142,13 @@ namespace Mono.CSharp {
 
 				var operators = MemberCache.GetUserOperator (source_type, Operator.OpType.Implicit, declared_only);
 				if (operators != null) {
-					FindApplicableUserDefinedConversionOperators (operators, source_type_expr, target_type, implicitOnly, ref candidates);
+					FindApplicableUserDefinedConversionOperators (rc, operators, source_type_expr, target_type, restr, ref candidates);
 				}
 
 				if (!implicitOnly) {
 					operators = MemberCache.GetUserOperator (source_type, Operator.OpType.Explicit, declared_only);
 					if (operators != null) {
-						FindApplicableUserDefinedConversionOperators (operators, source_type_expr, target_type, false, ref candidates);
+						FindApplicableUserDefinedConversionOperators (rc, operators, source_type_expr, target_type, restr, ref candidates);
 					}
 				}
 			}
@@ -1135,13 +1158,13 @@ namespace Mono.CSharp {
 
 				var operators = MemberCache.GetUserOperator (target_type, Operator.OpType.Implicit, declared_only);
 				if (operators != null) {
-					FindApplicableUserDefinedConversionOperators (operators, source_type_expr, target_type, implicitOnly, ref candidates);
+					FindApplicableUserDefinedConversionOperators (rc, operators, source_type_expr, target_type, restr, ref candidates);
 				}
 
 				if (!implicitOnly) {
 					operators = MemberCache.GetUserOperator (target_type, Operator.OpType.Explicit, declared_only);
 					if (operators != null) {
-						FindApplicableUserDefinedConversionOperators (operators, source_type_expr, target_type, false, ref candidates);
+						FindApplicableUserDefinedConversionOperators (rc, operators, source_type_expr, target_type, restr, ref candidates);
 					}
 				}
 			}
@@ -1163,7 +1186,7 @@ namespace Mono.CSharp {
 				// Pass original source type to find the best match against input type and
 				// not the unwrapped expression
 				//
-				s_x = FindMostSpecificSource (candidates, source.Type, source_type_expr, !implicitOnly);
+				s_x = FindMostSpecificSource (rc, candidates, source.Type, source_type_expr, !implicitOnly);
 				if (s_x == null)
 					return null;
 
@@ -1183,16 +1206,18 @@ namespace Mono.CSharp {
 					//
 					// Unless running in probing more
 					//
-					if (!probingOnly) {
-						MethodSpec ambig_arg = null;
+					if ((restr & UserConversionRestriction.ProbingOnly) == 0) {
+						MethodSpec ambig_arg = candidates [0];
+						most_specific_operator = candidates [1];
+						/*
 						foreach (var candidate in candidates) {
 							if (candidate.ReturnType == t_x)
 								most_specific_operator = candidate;
 							else if (candidate.Parameters.Types[0] == s_x)
 								ambig_arg = candidate;
 						}
-
-						ec.Report.Error (457, loc,
+						*/
+						rc.Report.Error (457, loc,
 							"Ambiguous user defined operators `{0}' and `{1}' when converting from `{2}' to `{3}'",
 							ambig_arg.GetSignatureForError (), most_specific_operator.GetSignatureForError (),
 							source.Type.GetSignatureForError (), target.GetSignatureForError ());
@@ -1208,21 +1233,21 @@ namespace Mono.CSharp {
 			if (s_x != source_type) {
 				var c = source as Constant;
 				if (c != null) {
-					source = c.Reduce (ec, s_x);
+					source = c.Reduce (rc, s_x);
 					if (source == null)
 						c = null;
 				}
 
 				if (c == null) {
 					source = implicitOnly ?
-						ImplicitConversionStandard (ec, source_type_expr, s_x, loc) :
-						ExplicitConversionStandard (ec, source_type_expr, s_x, loc);
+						ImplicitConversionStandard (rc, source_type_expr, s_x, loc) :
+						ExplicitConversionStandard (rc, source_type_expr, s_x, loc);
 				}
 			} else {
 				source = source_type_expr;
 			}
 
-			source = new UserCast (most_specific_operator, source, loc).Resolve (ec);
+			source = new UserCast (most_specific_operator, source, loc).Resolve (rc);
 
 			//
 			// Convert result type when it's different to best operator return type
@@ -1241,19 +1266,19 @@ namespace Mono.CSharp {
 						var unwrap = Nullable.Unwrap.CreateUnwrapped (source);
 
 						source = implicitOnly ?
-							ImplicitConversionStandard (ec, unwrap, target_type, loc) :
-							ExplicitConversionStandard (ec, unwrap, target_type, loc);
+							ImplicitConversionStandard (rc, unwrap, target_type, loc) :
+							ExplicitConversionStandard (rc, unwrap, target_type, loc);
 
 						if (source == null)
 							return null;
 
 						if (target.IsNullableType)
-							source = new Nullable.LiftedConversion (source, unwrap, target).Resolve (ec);
+							source = new Nullable.LiftedConversion (source, unwrap, target).Resolve (rc);
 					}
 				} else {
 					source = implicitOnly ?
-						ImplicitConversionStandard (ec, source, target_type, loc) :
-						ExplicitConversionStandard (ec, source, target_type, loc);
+						ImplicitConversionStandard (rc, source, target_type, loc) :
+						ExplicitConversionStandard (rc, source, target_type, loc);
 
 					if (source == null)
 						return null;
@@ -1266,7 +1291,7 @@ namespace Mono.CSharp {
 			// only non-nullable type we need to lift it manually
 			//
 			if (nullable_source && !s_x.IsNullableType)
-				return new Nullable.LiftedConversion (source, source_type_expr, target).Resolve (ec);
+				return new Nullable.LiftedConversion (source, source_type_expr, target).Resolve (rc);
 
 			//
 			// Target is of nullable type but source type is not, wrap the result expression
@@ -2230,6 +2255,7 @@ namespace Mono.CSharp {
 			}
 			
 			e = ExplicitUserConversion (ec, expr, target_type, loc);
+
 			if (e != null)
 				return e;			
 
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.cs
index 64b8c1f0..868c1394 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.cs
@@ -293,70 +293,77 @@ namespace Mono.CSharp
 //t    "class_member_declaration : indexer_declaration",
 //t    "class_member_declaration : operator_declaration",
 //t    "class_member_declaration : constructor_declaration",
+//t    "class_member_declaration : primary_constructor_body",
 //t    "class_member_declaration : destructor_declaration",
 //t    "class_member_declaration : type_declaration",
 //t    "class_member_declaration : attributes_without_members",
 //t    "class_member_declaration : incomplete_member",
 //t    "class_member_declaration : error",
 //t    "$$8 :",
+//t    "primary_constructor_body : OPEN_BRACE $$8 opt_statement_list block_end",
 //t    "$$9 :",
 //t    "$$10 :",
 //t    "$$11 :",
 //t    "$$12 :",
-//t    "struct_declaration : opt_attributes opt_modifiers opt_partial STRUCT $$8 type_declaration_name $$9 opt_primary_parameters opt_class_base opt_type_parameter_constraints_clauses $$10 OPEN_BRACE $$11 opt_class_member_declarations CLOSE_BRACE $$12 opt_semicolon",
-//t    "struct_declaration : opt_attributes opt_modifiers opt_partial STRUCT error",
 //t    "$$13 :",
-//t    "constant_declaration : opt_attributes opt_modifiers CONST type IDENTIFIER $$13 constant_initializer opt_constant_declarators SEMICOLON",
+//t    "struct_declaration : opt_attributes opt_modifiers opt_partial STRUCT $$9 type_declaration_name $$10 opt_primary_parameters opt_class_base opt_type_parameter_constraints_clauses $$11 OPEN_BRACE $$12 opt_class_member_declarations CLOSE_BRACE $$13 opt_semicolon",
+//t    "struct_declaration : opt_attributes opt_modifiers opt_partial STRUCT error",
+//t    "$$14 :",
+//t    "constant_declaration : opt_attributes opt_modifiers CONST type IDENTIFIER $$14 constant_initializer opt_constant_declarators SEMICOLON",
 //t    "constant_declaration : opt_attributes opt_modifiers CONST type error",
 //t    "opt_constant_declarators :",
 //t    "opt_constant_declarators : constant_declarators",
 //t    "constant_declarators : constant_declarator",
 //t    "constant_declarators : constant_declarators constant_declarator",
 //t    "constant_declarator : COMMA IDENTIFIER constant_initializer",
-//t    "$$14 :",
-//t    "constant_initializer : ASSIGN $$14 constant_initializer_expr",
+//t    "$$15 :",
+//t    "constant_initializer : ASSIGN $$15 constant_initializer_expr",
 //t    "constant_initializer : error",
 //t    "constant_initializer_expr : constant_expression",
 //t    "constant_initializer_expr : array_initializer",
-//t    "$$15 :",
-//t    "field_declaration : opt_attributes opt_modifiers member_type IDENTIFIER $$15 opt_field_initializer opt_field_declarators SEMICOLON",
 //t    "$$16 :",
-//t    "field_declaration : opt_attributes opt_modifiers FIXED simple_type IDENTIFIER $$16 fixed_field_size opt_fixed_field_declarators SEMICOLON",
+//t    "field_declaration : opt_attributes opt_modifiers member_type IDENTIFIER $$16 opt_field_initializer opt_field_declarators SEMICOLON",
+//t    "$$17 :",
+//t    "field_declaration : opt_attributes opt_modifiers FIXED simple_type IDENTIFIER $$17 fixed_field_size opt_fixed_field_declarators SEMICOLON",
 //t    "field_declaration : opt_attributes opt_modifiers FIXED simple_type error SEMICOLON",
 //t    "opt_field_initializer :",
-//t    "$$17 :",
-//t    "opt_field_initializer : ASSIGN $$17 variable_initializer",
+//t    "$$18 :",
+//t    "opt_field_initializer : ASSIGN $$18 variable_initializer",
 //t    "opt_field_declarators :",
 //t    "opt_field_declarators : field_declarators",
 //t    "field_declarators : field_declarator",
 //t    "field_declarators : field_declarators field_declarator",
 //t    "field_declarator : COMMA IDENTIFIER",
-//t    "$$18 :",
-//t    "field_declarator : COMMA IDENTIFIER ASSIGN $$18 variable_initializer",
+//t    "$$19 :",
+//t    "field_declarator : COMMA IDENTIFIER ASSIGN $$19 variable_initializer",
 //t    "opt_fixed_field_declarators :",
 //t    "opt_fixed_field_declarators : fixed_field_declarators",
 //t    "fixed_field_declarators : fixed_field_declarator",
 //t    "fixed_field_declarators : fixed_field_declarators fixed_field_declarator",
 //t    "fixed_field_declarator : COMMA IDENTIFIER fixed_field_size",
-//t    "$$19 :",
-//t    "fixed_field_size : OPEN_BRACKET $$19 expression CLOSE_BRACKET",
+//t    "$$20 :",
+//t    "fixed_field_size : OPEN_BRACKET $$20 expression CLOSE_BRACKET",
 //t    "fixed_field_size : OPEN_BRACKET error",
 //t    "variable_initializer : expression",
 //t    "variable_initializer : array_initializer",
 //t    "variable_initializer : error",
-//t    "$$20 :",
-//t    "method_declaration : method_header $$20 method_body",
 //t    "$$21 :",
+//t    "method_declaration : method_header $$21 method_body_expression_block",
 //t    "$$22 :",
-//t    "method_header : opt_attributes opt_modifiers member_type method_declaration_name OPEN_PARENS $$21 opt_formal_parameter_list CLOSE_PARENS $$22 opt_type_parameter_constraints_clauses",
 //t    "$$23 :",
+//t    "method_header : opt_attributes opt_modifiers member_type method_declaration_name OPEN_PARENS $$22 opt_formal_parameter_list CLOSE_PARENS $$23 opt_type_parameter_constraints_clauses",
 //t    "$$24 :",
 //t    "$$25 :",
-//t    "method_header : opt_attributes opt_modifiers PARTIAL VOID $$23 method_declaration_name OPEN_PARENS $$24 opt_formal_parameter_list CLOSE_PARENS $$25 opt_type_parameter_constraints_clauses",
+//t    "$$26 :",
+//t    "method_header : opt_attributes opt_modifiers PARTIAL VOID $$24 method_declaration_name OPEN_PARENS $$25 opt_formal_parameter_list CLOSE_PARENS $$26 opt_type_parameter_constraints_clauses",
 //t    "method_header : opt_attributes opt_modifiers member_type modifiers method_declaration_name OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS",
 //t    "method_header : opt_attributes opt_modifiers member_type method_declaration_name error",
+//t    "method_body_expression_block : method_body",
+//t    "method_body_expression_block : expression_block",
 //t    "method_body : block",
 //t    "method_body : SEMICOLON",
+//t    "$$27 :",
+//t    "expression_block : ARROW $$27 expression SEMICOLON",
 //t    "opt_formal_parameter_list :",
 //t    "opt_formal_parameter_list : formal_parameter_list",
 //t    "formal_parameter_list : fixed_parameters",
@@ -375,8 +382,8 @@ namespace Mono.CSharp
 //t    "fixed_parameter : opt_attributes opt_parameter_modifier parameter_type identifier_inside_body OPEN_BRACKET CLOSE_BRACKET",
 //t    "fixed_parameter : attribute_sections error",
 //t    "fixed_parameter : opt_attributes opt_parameter_modifier parameter_type error",
-//t    "$$26 :",
-//t    "fixed_parameter : opt_attributes opt_parameter_modifier parameter_type identifier_inside_body ASSIGN $$26 constant_expression",
+//t    "$$28 :",
+//t    "fixed_parameter : opt_attributes opt_parameter_modifier parameter_type identifier_inside_body ASSIGN $$28 constant_expression",
 //t    "opt_parameter_modifier :",
 //t    "opt_parameter_modifier : parameter_modifiers",
 //t    "parameter_modifiers : parameter_modifier",
@@ -391,31 +398,40 @@ namespace Mono.CSharp
 //t    "params_modifier : PARAMS parameter_modifier",
 //t    "params_modifier : PARAMS params_modifier",
 //t    "arglist_modifier : ARGLIST",
-//t    "$$27 :",
-//t    "$$28 :",
 //t    "$$29 :",
-//t    "property_declaration : opt_attributes opt_modifiers member_type member_declaration_name $$27 OPEN_BRACE $$28 accessor_declarations $$29 CLOSE_BRACE",
 //t    "$$30 :",
 //t    "$$31 :",
 //t    "$$32 :",
-//t    "indexer_declaration : opt_attributes opt_modifiers member_type indexer_declaration_name OPEN_BRACKET $$30 opt_formal_parameter_list CLOSE_BRACKET $$31 OPEN_BRACE accessor_declarations $$32 CLOSE_BRACE",
+//t    "property_declaration : opt_attributes opt_modifiers member_type member_declaration_name $$29 OPEN_BRACE $$30 accessor_declarations $$31 CLOSE_BRACE $$32 opt_property_initializer",
+//t    "$$33 :",
+//t    "property_declaration : opt_attributes opt_modifiers member_type member_declaration_name $$33 expression_block",
+//t    "opt_property_initializer :",
+//t    "$$34 :",
+//t    "opt_property_initializer : ASSIGN $$34 property_initializer SEMICOLON",
+//t    "property_initializer : expression",
+//t    "property_initializer : array_initializer",
+//t    "$$35 :",
+//t    "$$36 :",
+//t    "indexer_declaration : opt_attributes opt_modifiers member_type indexer_declaration_name OPEN_BRACKET $$35 opt_formal_parameter_list CLOSE_BRACKET $$36 indexer_body",
+//t    "indexer_body : OPEN_BRACE accessor_declarations CLOSE_BRACE",
+//t    "indexer_body : expression_block",
 //t    "accessor_declarations : get_accessor_declaration",
 //t    "accessor_declarations : get_accessor_declaration accessor_declarations",
 //t    "accessor_declarations : set_accessor_declaration",
 //t    "accessor_declarations : set_accessor_declaration accessor_declarations",
 //t    "accessor_declarations : error",
-//t    "$$33 :",
-//t    "get_accessor_declaration : opt_attributes opt_modifiers GET $$33 accessor_body",
-//t    "$$34 :",
-//t    "set_accessor_declaration : opt_attributes opt_modifiers SET $$34 accessor_body",
+//t    "$$37 :",
+//t    "get_accessor_declaration : opt_attributes opt_modifiers GET $$37 accessor_body",
+//t    "$$38 :",
+//t    "set_accessor_declaration : opt_attributes opt_modifiers SET $$38 accessor_body",
 //t    "accessor_body : block",
 //t    "accessor_body : SEMICOLON",
 //t    "accessor_body : error",
-//t    "$$35 :",
-//t    "$$36 :",
-//t    "$$37 :",
-//t    "$$38 :",
-//t    "interface_declaration : opt_attributes opt_modifiers opt_partial INTERFACE $$35 type_declaration_name $$36 opt_class_base opt_type_parameter_constraints_clauses $$37 OPEN_BRACE opt_interface_member_declarations CLOSE_BRACE $$38 opt_semicolon",
+//t    "$$39 :",
+//t    "$$40 :",
+//t    "$$41 :",
+//t    "$$42 :",
+//t    "interface_declaration : opt_attributes opt_modifiers opt_partial INTERFACE $$39 type_declaration_name $$40 opt_class_base opt_type_parameter_constraints_clauses $$41 OPEN_BRACE opt_interface_member_declarations CLOSE_BRACE $$42 opt_semicolon",
 //t    "interface_declaration : opt_attributes opt_modifiers opt_partial INTERFACE error",
 //t    "opt_interface_member_declarations :",
 //t    "opt_interface_member_declarations : interface_member_declarations",
@@ -430,14 +446,12 @@ namespace Mono.CSharp
 //t    "interface_member_declaration : operator_declaration",
 //t    "interface_member_declaration : constructor_declaration",
 //t    "interface_member_declaration : type_declaration",
-//t    "$$39 :",
-//t    "operator_declaration : opt_attributes opt_modifiers operator_declarator $$39 operator_body",
-//t    "operator_body : block",
-//t    "operator_body : SEMICOLON",
+//t    "$$43 :",
+//t    "operator_declaration : opt_attributes opt_modifiers operator_declarator $$43 method_body_expression_block",
 //t    "operator_type : type_expression_or_array",
 //t    "operator_type : VOID",
-//t    "$$40 :",
-//t    "operator_declarator : operator_type OPERATOR overloadable_operator OPEN_PARENS $$40 opt_formal_parameter_list CLOSE_PARENS",
+//t    "$$44 :",
+//t    "operator_declarator : operator_type OPERATOR overloadable_operator OPEN_PARENS $$44 opt_formal_parameter_list CLOSE_PARENS",
 //t    "operator_declarator : conversion_operator_declarator",
 //t    "overloadable_operator : BANG",
 //t    "overloadable_operator : TILDE",
@@ -461,63 +475,63 @@ namespace Mono.CSharp
 //t    "overloadable_operator : OP_LT",
 //t    "overloadable_operator : OP_GE",
 //t    "overloadable_operator : OP_LE",
-//t    "$$41 :",
-//t    "conversion_operator_declarator : IMPLICIT OPERATOR type OPEN_PARENS $$41 opt_formal_parameter_list CLOSE_PARENS",
-//t    "$$42 :",
-//t    "conversion_operator_declarator : EXPLICIT OPERATOR type OPEN_PARENS $$42 opt_formal_parameter_list CLOSE_PARENS",
+//t    "$$45 :",
+//t    "conversion_operator_declarator : IMPLICIT OPERATOR type OPEN_PARENS $$45 opt_formal_parameter_list CLOSE_PARENS",
+//t    "$$46 :",
+//t    "conversion_operator_declarator : EXPLICIT OPERATOR type OPEN_PARENS $$46 opt_formal_parameter_list CLOSE_PARENS",
 //t    "conversion_operator_declarator : IMPLICIT error",
 //t    "conversion_operator_declarator : EXPLICIT error",
 //t    "constructor_declaration : constructor_declarator constructor_body",
-//t    "$$43 :",
-//t    "$$44 :",
-//t    "constructor_declarator : opt_attributes opt_modifiers IDENTIFIER $$43 OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS $$44 opt_constructor_initializer",
+//t    "$$47 :",
+//t    "$$48 :",
+//t    "constructor_declarator : opt_attributes opt_modifiers IDENTIFIER $$47 OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS $$48 opt_constructor_initializer",
 //t    "constructor_body : block_prepared",
 //t    "constructor_body : SEMICOLON",
 //t    "opt_constructor_initializer :",
 //t    "opt_constructor_initializer : constructor_initializer",
-//t    "$$45 :",
-//t    "constructor_initializer : COLON BASE OPEN_PARENS $$45 opt_argument_list CLOSE_PARENS",
-//t    "$$46 :",
-//t    "constructor_initializer : COLON THIS OPEN_PARENS $$46 opt_argument_list CLOSE_PARENS",
-//t    "constructor_initializer : COLON error",
-//t    "constructor_initializer : error",
-//t    "$$47 :",
-//t    "destructor_declaration : opt_attributes opt_modifiers TILDE $$47 IDENTIFIER OPEN_PARENS CLOSE_PARENS method_body",
-//t    "$$48 :",
-//t    "event_declaration : opt_attributes opt_modifiers EVENT type member_declaration_name $$48 opt_event_initializer opt_event_declarators SEMICOLON",
 //t    "$$49 :",
+//t    "constructor_initializer : COLON BASE OPEN_PARENS $$49 opt_argument_list CLOSE_PARENS",
 //t    "$$50 :",
-//t    "event_declaration : opt_attributes opt_modifiers EVENT type member_declaration_name OPEN_BRACE $$49 event_accessor_declarations $$50 CLOSE_BRACE",
+//t    "constructor_initializer : COLON THIS OPEN_PARENS $$50 opt_argument_list CLOSE_PARENS",
+//t    "constructor_initializer : COLON error",
+//t    "constructor_initializer : error",
+//t    "$$51 :",
+//t    "destructor_declaration : opt_attributes opt_modifiers TILDE $$51 IDENTIFIER OPEN_PARENS CLOSE_PARENS method_body",
+//t    "$$52 :",
+//t    "event_declaration : opt_attributes opt_modifiers EVENT type member_declaration_name $$52 opt_event_initializer opt_event_declarators SEMICOLON",
+//t    "$$53 :",
+//t    "$$54 :",
+//t    "event_declaration : opt_attributes opt_modifiers EVENT type member_declaration_name OPEN_BRACE $$53 event_accessor_declarations $$54 CLOSE_BRACE",
 //t    "event_declaration : opt_attributes opt_modifiers EVENT type error",
 //t    "opt_event_initializer :",
-//t    "$$51 :",
-//t    "opt_event_initializer : ASSIGN $$51 event_variable_initializer",
+//t    "$$55 :",
+//t    "opt_event_initializer : ASSIGN $$55 event_variable_initializer",
 //t    "opt_event_declarators :",
 //t    "opt_event_declarators : event_declarators",
 //t    "event_declarators : event_declarator",
 //t    "event_declarators : event_declarators event_declarator",
 //t    "event_declarator : COMMA IDENTIFIER",
-//t    "$$52 :",
-//t    "event_declarator : COMMA IDENTIFIER ASSIGN $$52 event_variable_initializer",
-//t    "$$53 :",
-//t    "event_variable_initializer : $$53 variable_initializer",
+//t    "$$56 :",
+//t    "event_declarator : COMMA IDENTIFIER ASSIGN $$56 event_variable_initializer",
+//t    "$$57 :",
+//t    "event_variable_initializer : $$57 variable_initializer",
 //t    "event_accessor_declarations : add_accessor_declaration remove_accessor_declaration",
 //t    "event_accessor_declarations : remove_accessor_declaration add_accessor_declaration",
 //t    "event_accessor_declarations : add_accessor_declaration",
 //t    "event_accessor_declarations : remove_accessor_declaration",
 //t    "event_accessor_declarations : error",
-//t    "$$54 :",
-//t    "add_accessor_declaration : opt_attributes opt_modifiers ADD $$54 event_accessor_block",
-//t    "$$55 :",
-//t    "remove_accessor_declaration : opt_attributes opt_modifiers REMOVE $$55 event_accessor_block",
+//t    "$$58 :",
+//t    "add_accessor_declaration : opt_attributes opt_modifiers ADD $$58 event_accessor_block",
+//t    "$$59 :",
+//t    "remove_accessor_declaration : opt_attributes opt_modifiers REMOVE $$59 event_accessor_block",
 //t    "event_accessor_block : opt_semicolon",
 //t    "event_accessor_block : block",
 //t    "attributes_without_members : attribute_sections CLOSE_BRACE",
 //t    "incomplete_member : opt_attributes opt_modifiers member_type CLOSE_BRACE",
-//t    "$$56 :",
-//t    "$$57 :",
-//t    "$$58 :",
-//t    "enum_declaration : opt_attributes opt_modifiers ENUM type_declaration_name opt_enum_base $$56 OPEN_BRACE $$57 opt_enum_member_declarations $$58 CLOSE_BRACE opt_semicolon",
+//t    "$$60 :",
+//t    "$$61 :",
+//t    "$$62 :",
+//t    "enum_declaration : opt_attributes opt_modifiers ENUM type_declaration_name opt_enum_base $$60 OPEN_BRACE $$61 opt_enum_member_declarations $$62 CLOSE_BRACE opt_semicolon",
 //t    "opt_enum_base :",
 //t    "opt_enum_base : COLON type",
 //t    "opt_enum_base : COLON error",
@@ -527,28 +541,31 @@ namespace Mono.CSharp
 //t    "enum_member_declarations : enum_member_declaration",
 //t    "enum_member_declarations : enum_member_declarations COMMA enum_member_declaration",
 //t    "enum_member_declaration : opt_attributes IDENTIFIER",
-//t    "$$59 :",
-//t    "enum_member_declaration : opt_attributes IDENTIFIER $$59 ASSIGN constant_expression",
+//t    "$$63 :",
+//t    "enum_member_declaration : opt_attributes IDENTIFIER $$63 ASSIGN constant_expression",
 //t    "enum_member_declaration : opt_attributes IDENTIFIER error",
 //t    "enum_member_declaration : attributes_without_members",
-//t    "$$60 :",
-//t    "$$61 :",
-//t    "$$62 :",
-//t    "delegate_declaration : opt_attributes opt_modifiers DELEGATE member_type type_declaration_name OPEN_PARENS $$60 opt_formal_parameter_list CLOSE_PARENS $$61 opt_type_parameter_constraints_clauses $$62 SEMICOLON",
+//t    "$$64 :",
+//t    "$$65 :",
+//t    "$$66 :",
+//t    "delegate_declaration : opt_attributes opt_modifiers DELEGATE member_type type_declaration_name OPEN_PARENS $$64 opt_formal_parameter_list CLOSE_PARENS $$65 opt_type_parameter_constraints_clauses $$66 SEMICOLON",
 //t    "opt_nullable :",
 //t    "opt_nullable : INTERR_NULLABLE",
 //t    "namespace_or_type_expr : member_name",
 //t    "namespace_or_type_expr : qualified_alias_member IDENTIFIER opt_type_argument_list",
+//t    "namespace_or_type_expr : qualified_alias_member IDENTIFIER generic_dimension",
 //t    "member_name : simple_name_expr",
 //t    "member_name : namespace_or_type_expr DOT IDENTIFIER opt_type_argument_list",
+//t    "member_name : namespace_or_type_expr DOT IDENTIFIER generic_dimension",
 //t    "simple_name_expr : IDENTIFIER opt_type_argument_list",
+//t    "simple_name_expr : IDENTIFIER generic_dimension",
 //t    "opt_type_argument_list :",
 //t    "opt_type_argument_list : OP_GENERICS_LT type_arguments OP_GENERICS_GT",
 //t    "opt_type_argument_list : OP_GENERICS_LT error",
 //t    "type_arguments : type",
 //t    "type_arguments : type_arguments COMMA type",
-//t    "$$63 :",
-//t    "type_declaration_name : IDENTIFIER $$63 opt_type_parameter_list",
+//t    "$$67 :",
+//t    "type_declaration_name : IDENTIFIER $$67 opt_type_parameter_list",
 //t    "member_declaration_name : method_declaration_name",
 //t    "method_declaration_name : type_declaration_name",
 //t    "method_declaration_name : explicit_interface IDENTIFIER opt_type_parameter_list",
@@ -567,18 +584,20 @@ namespace Mono.CSharp
 //t    "type_and_void : VOID",
 //t    "member_type : type_and_void",
 //t    "type : type_expression_or_array",
-//t    "type : VOID",
+//t    "type : void_invalid",
 //t    "simple_type : type_expression",
-//t    "simple_type : VOID",
+//t    "simple_type : void_invalid",
 //t    "parameter_type : type_expression_or_array",
 //t    "parameter_type : VOID",
 //t    "type_expression_or_array : type_expression",
 //t    "type_expression_or_array : type_expression rank_specifiers",
 //t    "type_expression : namespace_or_type_expr opt_nullable",
 //t    "type_expression : namespace_or_type_expr pointer_stars",
-//t    "type_expression : builtin_types opt_nullable",
-//t    "type_expression : builtin_types pointer_stars",
-//t    "type_expression : VOID pointer_stars",
+//t    "type_expression : builtin_type_expression",
+//t    "void_invalid : VOID",
+//t    "builtin_type_expression : builtin_types opt_nullable",
+//t    "builtin_type_expression : builtin_types pointer_stars",
+//t    "builtin_type_expression : VOID pointer_stars",
 //t    "type_list : base_type_name",
 //t    "type_list : type_list COMMA base_type_name",
 //t    "base_type_name : type",
@@ -618,7 +637,7 @@ namespace Mono.CSharp
 //t    "primary_expression : pointer_member_access",
 //t    "primary_expression : anonymous_method_expression",
 //t    "primary_expression : undocumented_expressions",
-//t    "primary_expression_or_type : IDENTIFIER opt_type_argument_list",
+//t    "primary_expression_or_type : simple_name_expr",
 //t    "primary_expression_or_type : IDENTIFIER GENERATE_COMPLETION",
 //t    "primary_expression_or_type : member_access",
 //t    "literal : boolean_literal",
@@ -633,10 +652,13 @@ namespace Mono.CSharp
 //t    "parenthesized_expression : OPEN_PARENS expression CLOSE_PARENS",
 //t    "parenthesized_expression : OPEN_PARENS expression COMPLETE_COMPLETION",
 //t    "member_access : primary_expression DOT identifier_inside_body opt_type_argument_list",
+//t    "member_access : primary_expression DOT identifier_inside_body generic_dimension",
+//t    "member_access : primary_expression INTERR_OPERATOR DOT identifier_inside_body opt_type_argument_list",
 //t    "member_access : builtin_types DOT identifier_inside_body opt_type_argument_list",
 //t    "member_access : BASE DOT identifier_inside_body opt_type_argument_list",
 //t    "member_access : AWAIT DOT identifier_inside_body opt_type_argument_list",
 //t    "member_access : qualified_alias_member identifier_inside_body opt_type_argument_list",
+//t    "member_access : qualified_alias_member identifier_inside_body generic_dimension",
 //t    "member_access : primary_expression DOT GENERATE_COMPLETION",
 //t    "member_access : primary_expression DOT IDENTIFIER GENERATE_COMPLETION",
 //t    "member_access : builtin_types DOT GENERATE_COMPLETION",
@@ -658,6 +680,7 @@ namespace Mono.CSharp
 //t    "member_initializer : GENERATE_COMPLETION",
 //t    "member_initializer : non_assignment_expression opt_COMPLETE_COMPLETION",
 //t    "member_initializer : OPEN_BRACE expression_list CLOSE_BRACE",
+//t    "member_initializer : OPEN_BRACKET_EXPR expression_list CLOSE_BRACKET ASSIGN initializer_value",
 //t    "member_initializer : OPEN_BRACE CLOSE_BRACE",
 //t    "initializer_value : expression",
 //t    "initializer_value : object_or_collection_initializer",
@@ -678,6 +701,7 @@ namespace Mono.CSharp
 //t    "non_simple_argument : ARGLIST OPEN_PARENS CLOSE_PARENS",
 //t    "variable_reference : expression",
 //t    "element_access : primary_expression OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET",
+//t    "element_access : primary_expression INTERR_OPERATOR OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET",
 //t    "element_access : primary_expression OPEN_BRACKET_EXPR expression_list_arguments error",
 //t    "element_access : primary_expression OPEN_BRACKET_EXPR error",
 //t    "expression_list : expression_or_error",
@@ -698,8 +722,8 @@ namespace Mono.CSharp
 //t    "array_creation_expression : NEW rank_specifier array_initializer",
 //t    "array_creation_expression : NEW new_expr_type OPEN_BRACKET CLOSE_BRACKET OPEN_BRACKET_EXPR error CLOSE_BRACKET",
 //t    "array_creation_expression : NEW new_expr_type error",
-//t    "$$64 :",
-//t    "new_expr_type : $$64 simple_type",
+//t    "$$68 :",
+//t    "new_expr_type : $$68 simple_type",
 //t    "anonymous_type_expression : NEW OPEN_BRACE anonymous_type_parameters_opt_comma CLOSE_BRACE",
 //t    "anonymous_type_expression : NEW OPEN_BRACE GENERATE_COMPLETION",
 //t    "anonymous_type_parameters_opt_comma : anonymous_type_parameters_opt",
@@ -728,16 +752,9 @@ namespace Mono.CSharp
 //t    "array_initializer : OPEN_BRACE variable_initializer_list opt_comma CLOSE_BRACE",
 //t    "variable_initializer_list : variable_initializer",
 //t    "variable_initializer_list : variable_initializer_list COMMA variable_initializer",
-//t    "$$65 :",
-//t    "typeof_expression : TYPEOF $$65 open_parens_any typeof_type_expression CLOSE_PARENS",
+//t    "typeof_expression : TYPEOF open_parens_any typeof_type_expression CLOSE_PARENS",
 //t    "typeof_type_expression : type_and_void",
-//t    "typeof_type_expression : unbound_type_name",
 //t    "typeof_type_expression : error",
-//t    "unbound_type_name : identifier_inside_body generic_dimension",
-//t    "unbound_type_name : qualified_alias_member identifier_inside_body generic_dimension",
-//t    "unbound_type_name : unbound_type_name DOT identifier_inside_body",
-//t    "unbound_type_name : unbound_type_name DOT identifier_inside_body generic_dimension",
-//t    "unbound_type_name : namespace_or_type_expr DOT identifier_inside_body generic_dimension",
 //t    "generic_dimension : GENERIC_DIMENSION",
 //t    "qualified_alias_member : IDENTIFIER DOUBLE_COLON",
 //t    "sizeof_expression : SIZEOF open_parens_any type CLOSE_PARENS",
@@ -747,14 +764,14 @@ namespace Mono.CSharp
 //t    "unchecked_expression : UNCHECKED open_parens_any expression CLOSE_PARENS",
 //t    "unchecked_expression : UNCHECKED error",
 //t    "pointer_member_access : primary_expression OP_PTR IDENTIFIER opt_type_argument_list",
-//t    "$$66 :",
-//t    "anonymous_method_expression : DELEGATE opt_anonymous_method_signature $$66 block",
-//t    "$$67 :",
-//t    "anonymous_method_expression : ASYNC DELEGATE opt_anonymous_method_signature $$67 block",
+//t    "$$69 :",
+//t    "anonymous_method_expression : DELEGATE opt_anonymous_method_signature $$69 block",
+//t    "$$70 :",
+//t    "anonymous_method_expression : ASYNC DELEGATE opt_anonymous_method_signature $$70 block",
 //t    "opt_anonymous_method_signature :",
 //t    "opt_anonymous_method_signature : anonymous_method_signature",
-//t    "$$68 :",
-//t    "anonymous_method_signature : OPEN_PARENS $$68 opt_formal_parameter_list CLOSE_PARENS",
+//t    "$$71 :",
+//t    "anonymous_method_signature : OPEN_PARENS $$71 opt_formal_parameter_list CLOSE_PARENS",
 //t    "default_value_expression : DEFAULT open_parens_any type CLOSE_PARENS",
 //t    "unary_expression : primary_expression",
 //t    "unary_expression : BANG prefixed_unary_expression",
@@ -788,14 +805,23 @@ namespace Mono.CSharp
 //t    "additive_expression : multiplicative_expression",
 //t    "additive_expression : additive_expression PLUS multiplicative_expression",
 //t    "additive_expression : additive_expression MINUS multiplicative_expression",
-//t    "additive_expression : additive_expression AS type",
-//t    "additive_expression : additive_expression IS type",
 //t    "additive_expression : additive_expression PLUS error",
 //t    "additive_expression : additive_expression MINUS error",
+//t    "additive_expression : additive_expression AS type",
+//t    "additive_expression : additive_expression IS is_match_expr opt_identifier",
 //t    "additive_expression : additive_expression AS error",
 //t    "additive_expression : additive_expression IS error",
 //t    "additive_expression : AWAIT IS type",
 //t    "additive_expression : AWAIT AS type",
+//t    "is_match_expr : match_type",
+//t    "is_match_expr : match_type rank_specifiers",
+//t    "is_match_expr : literal",
+//t    "is_match_expr : PLUS prefixed_unary_expression",
+//t    "is_match_expr : MINUS prefixed_unary_expression",
+//t    "match_type : primary_expression_or_type opt_nullable",
+//t    "match_type : primary_expression_or_type pointer_stars",
+//t    "match_type : builtin_type_expression",
+//t    "match_type : void_invalid",
 //t    "shift_expression : additive_expression",
 //t    "shift_expression : shift_expression OP_SHIFT_LEFT additive_expression",
 //t    "shift_expression : shift_expression OP_SHIFT_RIGHT additive_expression",
@@ -856,24 +882,24 @@ namespace Mono.CSharp
 //t    "lambda_parameter : AWAIT",
 //t    "opt_lambda_parameter_list :",
 //t    "opt_lambda_parameter_list : lambda_parameter_list",
-//t    "$$69 :",
-//t    "lambda_expression_body : $$69 expression",
+//t    "$$72 :",
+//t    "lambda_expression_body : $$72 expression",
 //t    "lambda_expression_body : block",
 //t    "lambda_expression_body : error",
 //t    "expression_or_error : expression",
 //t    "expression_or_error : error",
-//t    "$$70 :",
-//t    "lambda_expression : IDENTIFIER ARROW $$70 lambda_expression_body",
-//t    "$$71 :",
-//t    "lambda_expression : AWAIT ARROW $$71 lambda_expression_body",
-//t    "$$72 :",
-//t    "lambda_expression : ASYNC identifier_inside_body ARROW $$72 lambda_expression_body",
 //t    "$$73 :",
+//t    "lambda_expression : IDENTIFIER ARROW $$73 lambda_expression_body",
 //t    "$$74 :",
-//t    "lambda_expression : OPEN_PARENS_LAMBDA $$73 opt_lambda_parameter_list CLOSE_PARENS ARROW $$74 lambda_expression_body",
+//t    "lambda_expression : AWAIT ARROW $$74 lambda_expression_body",
 //t    "$$75 :",
+//t    "lambda_expression : ASYNC identifier_inside_body ARROW $$75 lambda_expression_body",
 //t    "$$76 :",
-//t    "lambda_expression : ASYNC OPEN_PARENS_LAMBDA $$75 opt_lambda_parameter_list CLOSE_PARENS ARROW $$76 lambda_expression_body",
+//t    "$$77 :",
+//t    "lambda_expression : OPEN_PARENS_LAMBDA $$76 opt_lambda_parameter_list CLOSE_PARENS ARROW $$77 lambda_expression_body",
+//t    "$$78 :",
+//t    "$$79 :",
+//t    "lambda_expression : ASYNC OPEN_PARENS_LAMBDA $$78 opt_lambda_parameter_list CLOSE_PARENS ARROW $$79 lambda_expression_body",
 //t    "expression : assignment_expression",
 //t    "expression : non_assignment_expression",
 //t    "non_assignment_expression : conditional_expression",
@@ -891,13 +917,14 @@ namespace Mono.CSharp
 //t    "opt_primary_parameters_with_class_base :",
 //t    "opt_primary_parameters_with_class_base : class_base",
 //t    "opt_primary_parameters_with_class_base : primary_parameters",
-//t    "$$77 :",
-//t    "opt_primary_parameters_with_class_base : primary_parameters class_base OPEN_PARENS $$77 opt_argument_list CLOSE_PARENS",
-//t    "$$78 :",
-//t    "$$79 :",
+//t    "opt_primary_parameters_with_class_base : primary_parameters class_base",
 //t    "$$80 :",
+//t    "opt_primary_parameters_with_class_base : primary_parameters class_base OPEN_PARENS $$80 opt_argument_list CLOSE_PARENS",
 //t    "$$81 :",
-//t    "class_declaration : opt_attributes opt_modifiers opt_partial CLASS $$78 type_declaration_name $$79 opt_primary_parameters_with_class_base opt_type_parameter_constraints_clauses $$80 OPEN_BRACE opt_class_member_declarations CLOSE_BRACE $$81 opt_semicolon",
+//t    "$$82 :",
+//t    "$$83 :",
+//t    "$$84 :",
+//t    "class_declaration : opt_attributes opt_modifiers opt_partial CLASS $$81 type_declaration_name $$82 opt_primary_parameters_with_class_base opt_type_parameter_constraints_clauses $$83 OPEN_BRACE opt_class_member_declarations CLOSE_BRACE $$84 opt_semicolon",
 //t    "opt_partial :",
 //t    "opt_partial : PARTIAL",
 //t    "opt_modifiers :",
@@ -939,15 +966,15 @@ namespace Mono.CSharp
 //t    "opt_type_parameter_variance : type_parameter_variance",
 //t    "type_parameter_variance : OUT",
 //t    "type_parameter_variance : IN",
-//t    "$$82 :",
-//t    "block : OPEN_BRACE $$82 opt_statement_list block_end",
+//t    "$$85 :",
+//t    "block : OPEN_BRACE $$85 opt_statement_list block_end",
 //t    "block_end : CLOSE_BRACE",
 //t    "block_end : COMPLETE_COMPLETION",
-//t    "$$83 :",
-//t    "block_prepared : OPEN_BRACE $$83 opt_statement_list CLOSE_BRACE",
+//t    "$$86 :",
+//t    "block_prepared : OPEN_BRACE $$86 opt_statement_list CLOSE_BRACE",
 //t    "block_prepared : CLOSE_BRACE",
-//t    "$$84 :",
-//t    "block_prepared_strict : OPEN_BRACE $$84 opt_statement_list CLOSE_BRACE",
+//t    "$$87 :",
+//t    "block_prepared_strict : OPEN_BRACE $$87 opt_statement_list CLOSE_BRACE",
 //t    "opt_statement_list :",
 //t    "opt_statement_list : statement_list",
 //t    "statement_list : statement",
@@ -993,25 +1020,23 @@ namespace Mono.CSharp
 //t    "embedded_statement : labeled_statement",
 //t    "embedded_statement : error",
 //t    "empty_statement : SEMICOLON",
-//t    "$$85 :",
-//t    "labeled_statement : identifier_inside_body COLON $$85 statement",
+//t    "$$88 :",
+//t    "labeled_statement : identifier_inside_body COLON $$88 statement",
 //t    "variable_type : variable_type_simple",
 //t    "variable_type : variable_type_simple rank_specifiers",
 //t    "variable_type_simple : primary_expression_or_type opt_nullable",
 //t    "variable_type_simple : primary_expression_or_type pointer_stars",
-//t    "variable_type_simple : builtin_types opt_nullable",
-//t    "variable_type_simple : builtin_types pointer_stars",
-//t    "variable_type_simple : VOID pointer_stars",
-//t    "variable_type_simple : VOID",
+//t    "variable_type_simple : builtin_type_expression",
+//t    "variable_type_simple : void_invalid",
 //t    "pointer_stars : pointer_star",
 //t    "pointer_stars : pointer_star pointer_stars",
 //t    "pointer_star : STAR",
 //t    "identifier_inside_body : IDENTIFIER",
 //t    "identifier_inside_body : AWAIT",
-//t    "$$86 :",
-//t    "block_variable_declaration : variable_type identifier_inside_body $$86 opt_local_variable_initializer opt_variable_declarators semicolon_or_handle_error_close_brace",
-//t    "$$87 :",
-//t    "block_variable_declaration : CONST variable_type identifier_inside_body $$87 const_variable_initializer opt_const_declarators SEMICOLON",
+//t    "$$89 :",
+//t    "block_variable_declaration : variable_type identifier_inside_body $$89 opt_local_variable_initializer opt_variable_declarators semicolon_or_handle_error_close_brace",
+//t    "$$90 :",
+//t    "block_variable_declaration : CONST variable_type identifier_inside_body $$90 const_variable_initializer opt_const_declarators SEMICOLON",
 //t    "semicolon_or_handle_error_close_brace : SEMICOLON",
 //t    "semicolon_or_handle_error_close_brace : CLOSE_BRACE",
 //t    "opt_local_variable_initializer :",
@@ -1048,8 +1073,8 @@ namespace Mono.CSharp
 //t    "if_statement : IF open_parens_any boolean_expression CLOSE_PARENS embedded_statement",
 //t    "if_statement : IF open_parens_any boolean_expression CLOSE_PARENS embedded_statement ELSE embedded_statement",
 //t    "if_statement : IF open_parens_any boolean_expression error",
-//t    "$$88 :",
-//t    "switch_statement : SWITCH open_parens_any expression CLOSE_PARENS OPEN_BRACE $$88 opt_switch_sections CLOSE_BRACE",
+//t    "$$91 :",
+//t    "switch_statement : SWITCH open_parens_any expression CLOSE_PARENS OPEN_BRACE $$91 opt_switch_sections CLOSE_BRACE",
 //t    "switch_statement : SWITCH open_parens_any expression error",
 //t    "opt_switch_sections :",
 //t    "opt_switch_sections : switch_sections",
@@ -1071,20 +1096,20 @@ namespace Mono.CSharp
 //t    "do_statement : DO embedded_statement WHILE open_parens_any boolean_expression CLOSE_PARENS SEMICOLON",
 //t    "do_statement : DO embedded_statement error",
 //t    "do_statement : DO embedded_statement WHILE open_parens_any boolean_expression error",
-//t    "$$89 :",
-//t    "for_statement : FOR open_parens_any $$89 for_statement_cont",
-//t    "$$90 :",
-//t    "for_statement_cont : opt_for_initializer SEMICOLON $$90 for_statement_condition",
+//t    "$$92 :",
+//t    "for_statement : FOR open_parens_any $$92 for_statement_cont",
+//t    "$$93 :",
+//t    "for_statement_cont : opt_for_initializer SEMICOLON $$93 for_statement_condition",
 //t    "for_statement_cont : opt_for_initializer CLOSE_PARENS",
-//t    "$$91 :",
-//t    "for_statement_condition : opt_for_condition SEMICOLON $$91 for_statement_end",
+//t    "$$94 :",
+//t    "for_statement_condition : opt_for_condition SEMICOLON $$94 for_statement_end",
 //t    "for_statement_condition : boolean_expression CLOSE_PARENS",
 //t    "for_statement_end : opt_for_iterator CLOSE_PARENS embedded_statement",
 //t    "for_statement_end : error",
 //t    "opt_for_initializer :",
 //t    "opt_for_initializer : for_initializer",
-//t    "$$92 :",
-//t    "for_initializer : variable_type identifier_inside_body $$92 opt_local_variable_initializer opt_variable_declarators",
+//t    "$$95 :",
+//t    "for_initializer : variable_type identifier_inside_body $$95 opt_local_variable_initializer opt_variable_declarators",
 //t    "for_initializer : statement_expression_list",
 //t    "opt_for_condition :",
 //t    "opt_for_condition : boolean_expression",
@@ -1095,8 +1120,8 @@ namespace Mono.CSharp
 //t    "statement_expression_list : statement_expression_list COMMA statement_expression",
 //t    "foreach_statement : FOREACH open_parens_any type error",
 //t    "foreach_statement : FOREACH open_parens_any type identifier_inside_body error",
-//t    "$$93 :",
-//t    "foreach_statement : FOREACH open_parens_any type identifier_inside_body IN expression CLOSE_PARENS $$93 embedded_statement",
+//t    "$$96 :",
+//t    "foreach_statement : FOREACH open_parens_any type identifier_inside_body IN expression CLOSE_PARENS $$96 embedded_statement",
 //t    "foreach_statement : FOREACH open_parens_any type identifier_inside_body error",
 //t    "foreach_statement : FOREACH open_parens_any type error",
 //t    "jump_statement : break_statement",
@@ -1131,24 +1156,24 @@ namespace Mono.CSharp
 //t    "opt_identifier :",
 //t    "opt_identifier : identifier_inside_body",
 //t    "catch_clause : CATCH opt_catch_filter block",
-//t    "$$94 :",
-//t    "catch_clause : CATCH open_parens_any type opt_identifier CLOSE_PARENS $$94 opt_catch_filter block_prepared",
+//t    "$$97 :",
+//t    "catch_clause : CATCH open_parens_any type opt_identifier CLOSE_PARENS $$97 opt_catch_filter block_prepared",
 //t    "catch_clause : CATCH open_parens_any error",
 //t    "catch_clause : CATCH open_parens_any type opt_identifier CLOSE_PARENS error",
 //t    "opt_catch_filter :",
 //t    "opt_catch_filter : IF open_parens_any expression CLOSE_PARENS",
 //t    "checked_statement : CHECKED block",
 //t    "unchecked_statement : UNCHECKED block",
-//t    "$$95 :",
-//t    "unsafe_statement : UNSAFE $$95 block",
+//t    "$$98 :",
+//t    "unsafe_statement : UNSAFE $$98 block",
 //t    "lock_statement : LOCK open_parens_any expression CLOSE_PARENS embedded_statement",
 //t    "lock_statement : LOCK open_parens_any expression error",
-//t    "$$96 :",
-//t    "$$97 :",
-//t    "fixed_statement : FIXED open_parens_any variable_type identifier_inside_body $$96 using_or_fixed_variable_initializer opt_using_or_fixed_variable_declarators CLOSE_PARENS $$97 embedded_statement",
-//t    "$$98 :",
 //t    "$$99 :",
-//t    "using_statement : USING open_parens_any variable_type identifier_inside_body $$98 using_initialization CLOSE_PARENS $$99 embedded_statement",
+//t    "$$100 :",
+//t    "fixed_statement : FIXED open_parens_any variable_type identifier_inside_body $$99 using_or_fixed_variable_initializer opt_using_or_fixed_variable_declarators CLOSE_PARENS $$100 embedded_statement",
+//t    "$$101 :",
+//t    "$$102 :",
+//t    "using_statement : USING open_parens_any variable_type identifier_inside_body $$101 using_initialization CLOSE_PARENS $$102 embedded_statement",
 //t    "using_statement : USING open_parens_any expression CLOSE_PARENS embedded_statement",
 //t    "using_statement : USING open_parens_any expression error",
 //t    "using_initialization : using_or_fixed_variable_initializer opt_using_or_fixed_variable_declarators",
@@ -1163,20 +1188,20 @@ namespace Mono.CSharp
 //t    "first_from_clause : FROM_FIRST type identifier_inside_body IN expression",
 //t    "nested_from_clause : FROM identifier_inside_body IN expression",
 //t    "nested_from_clause : FROM type identifier_inside_body IN expression",
-//t    "$$100 :",
-//t    "from_clause : FROM identifier_inside_body IN $$100 expression_or_error",
-//t    "$$101 :",
-//t    "from_clause : FROM type identifier_inside_body IN $$101 expression_or_error",
+//t    "$$103 :",
+//t    "from_clause : FROM identifier_inside_body IN $$103 expression_or_error",
+//t    "$$104 :",
+//t    "from_clause : FROM type identifier_inside_body IN $$104 expression_or_error",
 //t    "query_body : query_body_clauses select_or_group_clause opt_query_continuation",
 //t    "query_body : select_or_group_clause opt_query_continuation",
 //t    "query_body : query_body_clauses COMPLETE_COMPLETION",
 //t    "query_body : query_body_clauses error",
 //t    "query_body : error",
-//t    "$$102 :",
-//t    "select_or_group_clause : SELECT $$102 expression_or_error",
-//t    "$$103 :",
-//t    "$$104 :",
-//t    "select_or_group_clause : GROUP $$103 expression_or_error $$104 by_expression",
+//t    "$$105 :",
+//t    "select_or_group_clause : SELECT $$105 expression_or_error",
+//t    "$$106 :",
+//t    "$$107 :",
+//t    "select_or_group_clause : GROUP $$106 expression_or_error $$107 by_expression",
 //t    "by_expression : BY expression_or_error",
 //t    "by_expression : error",
 //t    "query_body_clauses : query_body_clause",
@@ -1186,28 +1211,28 @@ namespace Mono.CSharp
 //t    "query_body_clause : where_clause",
 //t    "query_body_clause : join_clause",
 //t    "query_body_clause : orderby_clause",
-//t    "$$105 :",
-//t    "let_clause : LET identifier_inside_body ASSIGN $$105 expression_or_error",
-//t    "$$106 :",
-//t    "where_clause : WHERE $$106 expression_or_error",
-//t    "$$107 :",
 //t    "$$108 :",
+//t    "let_clause : LET identifier_inside_body ASSIGN $$108 expression_or_error",
 //t    "$$109 :",
-//t    "join_clause : JOIN identifier_inside_body IN $$107 expression_or_error ON $$108 expression_or_error EQUALS $$109 expression_or_error opt_join_into",
+//t    "where_clause : WHERE $$109 expression_or_error",
 //t    "$$110 :",
 //t    "$$111 :",
 //t    "$$112 :",
-//t    "join_clause : JOIN type identifier_inside_body IN $$110 expression_or_error ON $$111 expression_or_error EQUALS $$112 expression_or_error opt_join_into",
+//t    "join_clause : JOIN identifier_inside_body IN $$110 expression_or_error ON $$111 expression_or_error EQUALS $$112 expression_or_error opt_join_into",
+//t    "$$113 :",
+//t    "$$114 :",
+//t    "$$115 :",
+//t    "join_clause : JOIN type identifier_inside_body IN $$113 expression_or_error ON $$114 expression_or_error EQUALS $$115 expression_or_error opt_join_into",
 //t    "opt_join_into :",
 //t    "opt_join_into : INTO identifier_inside_body",
-//t    "$$113 :",
-//t    "orderby_clause : ORDERBY $$113 orderings",
+//t    "$$116 :",
+//t    "orderby_clause : ORDERBY $$116 orderings",
 //t    "orderings : order_by",
-//t    "$$114 :",
-//t    "orderings : order_by COMMA $$114 orderings_then_by",
+//t    "$$117 :",
+//t    "orderings : order_by COMMA $$117 orderings_then_by",
 //t    "orderings_then_by : then_by",
-//t    "$$115 :",
-//t    "orderings_then_by : orderings_then_by COMMA $$115 then_by",
+//t    "$$118 :",
+//t    "orderings_then_by : orderings_then_by COMMA $$118 then_by",
 //t    "order_by : expression",
 //t    "order_by : expression ASCENDING",
 //t    "order_by : expression DESCENDING",
@@ -1215,12 +1240,12 @@ namespace Mono.CSharp
 //t    "then_by : expression ASCENDING",
 //t    "then_by : expression DESCENDING",
 //t    "opt_query_continuation :",
-//t    "$$116 :",
-//t    "opt_query_continuation : INTO identifier_inside_body $$116 query_body",
+//t    "$$119 :",
+//t    "opt_query_continuation : INTO identifier_inside_body $$119 query_body",
 //t    "interactive_parsing : EVAL_STATEMENT_PARSER EOF",
 //t    "interactive_parsing : EVAL_USING_DECLARATIONS_UNIT_PARSER using_directives opt_COMPLETE_COMPLETION",
-//t    "$$117 :",
-//t    "interactive_parsing : EVAL_STATEMENT_PARSER $$117 interactive_statement_list opt_COMPLETE_COMPLETION",
+//t    "$$120 :",
+//t    "interactive_parsing : EVAL_STATEMENT_PARSER $$120 interactive_statement_list opt_COMPLETE_COMPLETION",
 //t    "interactive_parsing : EVAL_COMPILATION_UNIT_PARSER interactive_compilation_unit",
 //t    "interactive_compilation_unit : opt_extern_alias_directives opt_using_directives",
 //t    "interactive_compilation_unit : opt_extern_alias_directives opt_using_directives namespace_or_type_declarations",
@@ -1234,16 +1259,16 @@ namespace Mono.CSharp
 //t    "doc_cref : VOID opt_doc_method_sig",
 //t    "doc_cref : builtin_types DOT IDENTIFIER opt_doc_method_sig",
 //t    "doc_cref : doc_type_declaration_name DOT THIS",
-//t    "$$118 :",
-//t    "doc_cref : doc_type_declaration_name DOT THIS OPEN_BRACKET $$118 opt_doc_parameters CLOSE_BRACKET",
+//t    "$$121 :",
+//t    "doc_cref : doc_type_declaration_name DOT THIS OPEN_BRACKET $$121 opt_doc_parameters CLOSE_BRACKET",
 //t    "doc_cref : EXPLICIT OPERATOR type opt_doc_method_sig",
 //t    "doc_cref : IMPLICIT OPERATOR type opt_doc_method_sig",
 //t    "doc_cref : OPERATOR overloadable_operator opt_doc_method_sig",
 //t    "doc_type_declaration_name : type_declaration_name",
 //t    "doc_type_declaration_name : doc_type_declaration_name DOT type_declaration_name",
 //t    "opt_doc_method_sig :",
-//t    "$$119 :",
-//t    "opt_doc_method_sig : OPEN_PARENS $$119 opt_doc_parameters CLOSE_PARENS",
+//t    "$$122 :",
+//t    "opt_doc_method_sig : OPEN_PARENS $$122 opt_doc_parameters CLOSE_PARENS",
 //t    "opt_doc_parameters :",
 //t    "opt_doc_parameters : doc_parameters",
 //t    "doc_parameters : doc_parameter",
@@ -1287,14 +1312,15 @@ namespace Mono.CSharp
     "VOLATILE","WHERE","WHILE","ARGLIST","PARTIAL","ARROW","FROM",
     "FROM_FIRST","JOIN","ON","EQUALS","SELECT","GROUP","BY","LET",
     "ORDERBY","ASCENDING","DESCENDING","INTO","INTERR_NULLABLE",
-    "EXTERN_ALIAS","REFVALUE","REFTYPE","MAKEREF","ASYNC","AWAIT","GET",
-    "SET","LAST_KEYWORD","OPEN_BRACE","CLOSE_BRACE","OPEN_BRACKET",
-    "CLOSE_BRACKET","OPEN_PARENS","CLOSE_PARENS","DOT","COMMA","COLON",
-    "SEMICOLON","TILDE","PLUS","MINUS","BANG","ASSIGN","OP_LT","OP_GT",
-    "BITWISE_AND","BITWISE_OR","STAR","PERCENT","DIV","CARRET","INTERR",
-    "DOUBLE_COLON","OP_INC","OP_DEC","OP_SHIFT_LEFT","OP_SHIFT_RIGHT",
-    "OP_LE","OP_GE","OP_EQ","OP_NE","OP_AND","OP_OR","OP_MULT_ASSIGN",
-    "OP_DIV_ASSIGN","OP_MOD_ASSIGN","OP_ADD_ASSIGN","OP_SUB_ASSIGN",
+    "EXTERN_ALIAS","REFVALUE","REFTYPE","MAKEREF","ASYNC","AWAIT",
+    "INTERR_OPERATOR","GET","SET","LAST_KEYWORD","OPEN_BRACE",
+    "CLOSE_BRACE","OPEN_BRACKET","CLOSE_BRACKET","OPEN_PARENS",
+    "CLOSE_PARENS","DOT","COMMA","COLON","SEMICOLON","TILDE","PLUS",
+    "MINUS","BANG","ASSIGN","OP_LT","OP_GT","BITWISE_AND","BITWISE_OR",
+    "STAR","PERCENT","DIV","CARRET","INTERR","DOUBLE_COLON","OP_INC",
+    "OP_DEC","OP_SHIFT_LEFT","OP_SHIFT_RIGHT","OP_LE","OP_GE","OP_EQ",
+    "OP_NE","OP_AND","OP_OR","OP_MULT_ASSIGN","OP_DIV_ASSIGN",
+    "OP_MOD_ASSIGN","OP_ADD_ASSIGN","OP_SUB_ASSIGN",
     "OP_SHIFT_LEFT_ASSIGN","OP_SHIFT_RIGHT_ASSIGN","OP_AND_ASSIGN",
     "OP_XOR_ASSIGN","OP_OR_ASSIGN","OP_PTR","OP_COALESCING",
     "OP_GENERICS_LT","OP_GENERICS_LT_DECL","OP_GENERICS_GT","LITERAL",
@@ -1492,20 +1518,20 @@ namespace Mono.CSharp
         yyVal = yyV > yyTop ? null : yyVals[yyV]; // yyVal = yyDefault(yyV > yyTop ? null : yyVals[yyV]);
         switch (yyN) {
 case 1:
-#line 388 "cs-parser.jay"
+#line 389 "cs-parser.jay"
   {
 		Lexer.check_incorrect_doc_comment ();
 	  }
   break;
 case 2:
-#line 389 "cs-parser.jay"
+#line 390 "cs-parser.jay"
   { Lexer.CompleteOnEOF = false; }
   break;
 case 6:
   case_6();
   break;
 case 7:
-#line 408 "cs-parser.jay"
+#line 409 "cs-parser.jay"
   {
 		module.AddAttributes ((Attributes) yyVals[0+yyTop], current_namespace);
 	  }
@@ -1517,7 +1543,7 @@ case 13:
   case_13();
   break;
 case 14:
-#line 453 "cs-parser.jay"
+#line 454 "cs-parser.jay"
   {
 		Error_SyntaxError (yyToken);
 	  }
@@ -1562,7 +1588,7 @@ case 43:
   case_43();
   break;
 case 44:
-#line 637 "cs-parser.jay"
+#line 638 "cs-parser.jay"
   {
 		current_namespace.DeclarationFound = true;
 	  }
@@ -1601,15 +1627,15 @@ case 62:
   case_62();
   break;
 case 63:
-#line 762 "cs-parser.jay"
+#line 763 "cs-parser.jay"
   { yyVal = "event"; PushLocation (GetLocation (yyVals[0+yyTop])); }
   break;
 case 64:
-#line 763 "cs-parser.jay"
+#line 764 "cs-parser.jay"
   { yyVal = "return"; PushLocation (GetLocation (yyVals[0+yyTop])); }
   break;
 case 65:
-#line 770 "cs-parser.jay"
+#line 771 "cs-parser.jay"
   {
 		yyVal = new List<Attribute> (4) { (Attribute) yyVals[0+yyTop] };
 	  }
@@ -1618,7 +1644,7 @@ case 66:
   case_66();
   break;
 case 67:
-#line 787 "cs-parser.jay"
+#line 788 "cs-parser.jay"
   {
 		++lexer.parsing_block;
 	  }
@@ -1627,14 +1653,14 @@ case 68:
   case_68();
   break;
 case 70:
-#line 815 "cs-parser.jay"
+#line 816 "cs-parser.jay"
   { yyVal = null; HadAttributeParens = false;  }
   break;
 case 71:
   case_71();
   break;
 case 72:
-#line 827 "cs-parser.jay"
+#line 828 "cs-parser.jay"
   { yyVal = null; }
   break;
 case 73:
@@ -1650,7 +1676,7 @@ case 76:
   case_76();
   break;
 case 77:
-#line 871 "cs-parser.jay"
+#line 872 "cs-parser.jay"
   {
 	  	yyVal = new Argument ((Expression) yyVals[0+yyTop]);
 	  }
@@ -1659,7 +1685,7 @@ case 79:
   case_79();
   break;
 case 80:
-#line 884 "cs-parser.jay"
+#line 885 "cs-parser.jay"
   {
 		++lexer.parsing_block;
 	  }
@@ -1671,17 +1697,17 @@ case 82:
   case_82();
   break;
 case 83:
-#line 910 "cs-parser.jay"
+#line 911 "cs-parser.jay"
   { yyVal = null; }
   break;
 case 84:
-#line 914 "cs-parser.jay"
+#line 915 "cs-parser.jay"
   { 
 		yyVal = Argument.AType.Ref;
 	  }
   break;
 case 85:
-#line 918 "cs-parser.jay"
+#line 919 "cs-parser.jay"
   { 
 		yyVal = Argument.AType.Out;
 	  }
@@ -1692,13 +1718,8 @@ case 88:
 case 89:
   case_89();
   break;
-case 102:
-  case_102();
-  break;
 case 103:
-#line 967 "cs-parser.jay"
-  {
-	  }
+  case_103();
   break;
 case 104:
   case_104();
@@ -1707,7 +1728,9 @@ case 105:
   case_105();
   break;
 case 106:
-  case_106();
+#line 996 "cs-parser.jay"
+  {
+	  }
   break;
 case 107:
   case_107();
@@ -1716,10 +1739,7 @@ case 108:
   case_108();
   break;
 case 109:
-#line 1017 "cs-parser.jay"
-  {
-		Error_SyntaxError (yyToken);
-	  }
+  case_109();
   break;
 case 110:
   case_110();
@@ -1728,124 +1748,124 @@ case 111:
   case_111();
   break;
 case 112:
-  case_112();
+#line 1046 "cs-parser.jay"
+  {
+		Error_SyntaxError (yyToken);
+	  }
+  break;
+case 113:
+  case_113();
+  break;
+case 114:
+  case_114();
   break;
 case 115:
-#line 1066 "cs-parser.jay"
+  case_115();
+  break;
+case 118:
+#line 1095 "cs-parser.jay"
   {
 		current_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
 	  }
   break;
-case 116:
-#line 1070 "cs-parser.jay"
+case 119:
+#line 1099 "cs-parser.jay"
   {
 		current_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
 	  }
   break;
-case 117:
-  case_117();
+case 120:
+  case_120();
   break;
-case 118:
-#line 1086 "cs-parser.jay"
+case 121:
+#line 1115 "cs-parser.jay"
   {
 		++lexer.parsing_block;
 	  }
   break;
-case 119:
-  case_119();
-  break;
-case 120:
-  case_120();
+case 122:
+  case_122();
   break;
 case 123:
   case_123();
   break;
-case 124:
-  case_124();
-  break;
-case 125:
-  case_125();
-  break;
 case 126:
   case_126();
   break;
 case 127:
-#line 1165 "cs-parser.jay"
-  {
-		report.Error (1641, GetLocation (yyVals[-1+yyTop]), "A fixed size buffer field must have the array size specifier after the field name");
-	  }
+  case_127();
+  break;
+case 128:
+  case_128();
   break;
 case 129:
   case_129();
   break;
 case 130:
-  case_130();
+#line 1194 "cs-parser.jay"
+  {
+		report.Error (1641, GetLocation (yyVals[-1+yyTop]), "A fixed size buffer field must have the array size specifier after the field name");
+	  }
+  break;
+case 132:
+  case_132();
   break;
 case 133:
-#line 1195 "cs-parser.jay"
+  case_133();
+  break;
+case 136:
+#line 1224 "cs-parser.jay"
   {
 		current_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
 	  }
   break;
-case 134:
-#line 1199 "cs-parser.jay"
+case 137:
+#line 1228 "cs-parser.jay"
   {
 		current_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
 	  }
   break;
-case 135:
-  case_135();
+case 138:
+  case_138();
   break;
-case 136:
-#line 1212 "cs-parser.jay"
+case 139:
+#line 1241 "cs-parser.jay"
   {
 		++lexer.parsing_block;
 	  }
   break;
-case 137:
-  case_137();
-  break;
 case 140:
-#line 1231 "cs-parser.jay"
+  case_140();
+  break;
+case 143:
+#line 1260 "cs-parser.jay"
   {
 		current_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
 	  }
   break;
-case 141:
-#line 1235 "cs-parser.jay"
+case 144:
+#line 1264 "cs-parser.jay"
   {
 		current_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
 	  }
   break;
-case 142:
-  case_142();
+case 145:
+  case_145();
   break;
-case 143:
-#line 1251 "cs-parser.jay"
+case 146:
+#line 1280 "cs-parser.jay"
   {
 		++lexer.parsing_block;
 	  }
   break;
-case 144:
-  case_144();
-  break;
-case 145:
-  case_145();
+case 147:
+  case_147();
   break;
 case 148:
   case_148();
   break;
-case 149:
-  case_149();
-  break;
-case 150:
-  case_150();
-  break;
 case 151:
-#line 1319 "cs-parser.jay"
-  {
-		valid_param_mod = ParameterModifierType.All;
-	  }
+  case_151();
   break;
 case 152:
   case_152();
@@ -1854,45 +1874,44 @@ case 153:
   case_153();
   break;
 case 154:
-#line 1358 "cs-parser.jay"
+#line 1348 "cs-parser.jay"
   {
-		lexer.parsing_generic_declaration = true;
+		valid_param_mod = ParameterModifierType.All;
 	  }
   break;
 case 155:
   case_155();
   break;
 case 156:
-#line 1368 "cs-parser.jay"
-  {
-		lexer.ConstraintsParsing = true;
-	  }
+  case_156();
   break;
 case 157:
-  case_157();
+#line 1387 "cs-parser.jay"
+  {
+		lexer.parsing_generic_declaration = true;
+	  }
   break;
 case 158:
   case_158();
   break;
 case 159:
-  case_159();
+#line 1397 "cs-parser.jay"
+  {
+		lexer.ConstraintsParsing = true;
+	  }
+  break;
+case 160:
+  case_160();
   break;
 case 161:
-#line 1441 "cs-parser.jay"
-  { savedLocation = GetLocation (yyVals[0+yyTop]); yyVal = null; }
+  case_161();
   break;
 case 162:
-#line 1445 "cs-parser.jay"
-  { yyVal = ParametersCompiled.EmptyReadOnlyParameters; }
-  break;
-case 164:
-  case_164();
-  break;
-case 165:
-  case_165();
+  case_162();
   break;
 case 166:
-  case_166();
+#line 1475 "cs-parser.jay"
+  { savedLocation = GetLocation (yyVals[0+yyTop]); yyVal = null; }
   break;
 case 167:
   case_167();
@@ -1901,22 +1920,14 @@ case 168:
   case_168();
   break;
 case 169:
-  case_169();
-  break;
-case 170:
-  case_170();
+#line 1499 "cs-parser.jay"
+  { yyVal = ParametersCompiled.EmptyReadOnlyParameters; }
   break;
 case 171:
-#line 1517 "cs-parser.jay"
-  {
-		yyVal = new ParametersCompiled (new Parameter[] { (Parameter) yyVals[0+yyTop] } );
-	  }
+  case_171();
   break;
 case 172:
-#line 1521 "cs-parser.jay"
-  {
-		yyVal = new ParametersCompiled (new Parameter [] { new ArglistParameter (GetLocation (yyVals[0+yyTop])) }, true);
-	  }
+  case_172();
   break;
 case 173:
   case_173();
@@ -1934,29 +1945,31 @@ case 177:
   case_177();
   break;
 case 178:
-  case_178();
+#line 1571 "cs-parser.jay"
+  {
+		yyVal = new ParametersCompiled (new Parameter[] { (Parameter) yyVals[0+yyTop] } );
+	  }
   break;
 case 179:
-  case_179();
-  break;
-case 180:
-#line 1602 "cs-parser.jay"
+#line 1575 "cs-parser.jay"
   {
-	  	++lexer.parsing_block;
+		yyVal = new ParametersCompiled (new Parameter [] { new ArglistParameter (GetLocation (yyVals[0+yyTop])) }, true);
 	  }
   break;
+case 180:
+  case_180();
+  break;
 case 181:
   case_181();
   break;
 case 182:
-#line 1643 "cs-parser.jay"
-  { yyVal = Parameter.Modifier.NONE; }
+  case_182();
+  break;
+case 183:
+  case_183();
   break;
 case 184:
-#line 1651 "cs-parser.jay"
-  {
-		yyVal = yyVals[0+yyTop];
-	  }
+  case_184();
   break;
 case 185:
   case_185();
@@ -1965,19 +1978,23 @@ case 186:
   case_186();
   break;
 case 187:
-  case_187();
+#line 1656 "cs-parser.jay"
+  {
+	  	++lexer.parsing_block;
+	  }
   break;
 case 188:
   case_188();
   break;
 case 189:
-  case_189();
-  break;
-case 190:
-  case_190();
+#line 1697 "cs-parser.jay"
+  { yyVal = Parameter.Modifier.NONE; }
   break;
 case 191:
-  case_191();
+#line 1705 "cs-parser.jay"
+  {
+		yyVal = yyVals[0+yyTop];
+	  }
   break;
 case 192:
   case_192();
@@ -1986,10 +2003,7 @@ case 193:
   case_193();
   break;
 case 194:
-#line 1745 "cs-parser.jay"
-  {
-		Error_DuplicateParameterModifier (GetLocation (yyVals[-1+yyTop]), Parameter.Modifier.PARAMS);
-	  }
+  case_194();
   break;
 case 195:
   case_195();
@@ -2007,67 +2021,68 @@ case 199:
   case_199();
   break;
 case 200:
+  case_200();
+  break;
+case 201:
 #line 1799 "cs-parser.jay"
   {
-	  	valid_param_mod = ParameterModifierType.Params | ParameterModifierType.DefaultValue;
+		Error_DuplicateParameterModifier (GetLocation (yyVals[-1+yyTop]), Parameter.Modifier.PARAMS);
 	  }
   break;
-case 201:
-  case_201();
-  break;
 case 202:
-#line 1828 "cs-parser.jay"
-  {
-		lexer.PropertyParsing = false;
-	  }
+  case_202();
   break;
 case 203:
   case_203();
   break;
+case 204:
+  case_204();
+  break;
+case 205:
+  case_205();
+  break;
+case 206:
+  case_206();
+  break;
+case 207:
+#line 1849 "cs-parser.jay"
+  {
+		current_property = null;
+	  }
+  break;
 case 208:
   case_208();
   break;
 case 209:
   case_209();
   break;
-case 210:
-  case_210();
-  break;
 case 211:
   case_211();
   break;
 case 212:
   case_212();
   break;
-case 214:
-  case_214();
-  break;
 case 215:
-  case_215();
-  break;
-case 216:
-#line 1976 "cs-parser.jay"
+#line 1911 "cs-parser.jay"
   {
+	  	valid_param_mod = ParameterModifierType.Params | ParameterModifierType.DefaultValue;
 	  }
   break;
+case 216:
+  case_216();
+  break;
 case 217:
   case_217();
   break;
 case 218:
-  case_218();
+#line 1957 "cs-parser.jay"
+  {
+		lbag.AppendToMember (current_property, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
+	  }
   break;
 case 219:
   case_219();
   break;
-case 220:
-  case_220();
-  break;
-case 221:
-#line 2016 "cs-parser.jay"
-  {
-		Error_SyntaxError (yyToken);	  
-	  }
-  break;
 case 224:
   case_224();
   break;
@@ -2075,200 +2090,200 @@ case 225:
   case_225();
   break;
 case 226:
-#line 2041 "cs-parser.jay"
-  {
-		report.Error (525, GetLocation (yyVals[0+yyTop]), "Interfaces cannot contain fields or constants");
-	  }
+  case_226();
   break;
 case 227:
-#line 2045 "cs-parser.jay"
-  {
-		report.Error (525, GetLocation (yyVals[0+yyTop]), "Interfaces cannot contain fields or constants");
-	  }
+  case_227();
+  break;
+case 228:
+  case_228();
+  break;
+case 230:
+  case_230();
+  break;
+case 231:
+  case_231();
   break;
 case 232:
-#line 2053 "cs-parser.jay"
+#line 2098 "cs-parser.jay"
   {
-	  	report.Error (567, GetLocation (yyVals[0+yyTop]), "Interfaces cannot contain operators");
 	  }
   break;
 case 233:
-#line 2057 "cs-parser.jay"
-  {
-	  	report.Error (526, GetLocation (yyVals[0+yyTop]), "Interfaces cannot contain contructors");
-	  }
+  case_233();
   break;
 case 234:
-#line 2061 "cs-parser.jay"
-  {
-	  	report.Error (524, GetLocation (yyVals[0+yyTop]), "Interfaces cannot declare classes, structs, interfaces, delegates, or enumerations");
-	  }
+  case_234();
   break;
 case 235:
-#line 2067 "cs-parser.jay"
-  {
-	  }
+  case_235();
   break;
 case 236:
   case_236();
   break;
-case 238:
-#line 2100 "cs-parser.jay"
-  { savedLocation = GetLocation (yyVals[0+yyTop]); yyVal = null; }
+case 237:
+#line 2138 "cs-parser.jay"
+  {
+		Error_SyntaxError (yyToken);	  
+	  }
   break;
 case 240:
   case_240();
   break;
 case 241:
-#line 2116 "cs-parser.jay"
-  {
-		valid_param_mod = ParameterModifierType.DefaultValue;
-	  }
+  case_241();
   break;
 case 242:
-  case_242();
-  break;
-case 244:
-#line 2162 "cs-parser.jay"
-  { yyVal = Operator.OpType.LogicalNot; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
-  break;
-case 245:
 #line 2163 "cs-parser.jay"
-  { yyVal = Operator.OpType.OnesComplement; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
-  break;
-case 246:
-#line 2164 "cs-parser.jay"
-  { yyVal = Operator.OpType.Increment; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+  {
+		report.Error (525, GetLocation (yyVals[0+yyTop]), "Interfaces cannot contain fields or constants");
+	  }
   break;
-case 247:
-#line 2165 "cs-parser.jay"
-  { yyVal = Operator.OpType.Decrement; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+case 243:
+#line 2167 "cs-parser.jay"
+  {
+		report.Error (525, GetLocation (yyVals[0+yyTop]), "Interfaces cannot contain fields or constants");
+	  }
   break;
 case 248:
-#line 2166 "cs-parser.jay"
-  { yyVal = Operator.OpType.True; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2175 "cs-parser.jay"
+  {
+	  	report.Error (567, GetLocation (yyVals[0+yyTop]), "Interfaces cannot contain operators");
+	  }
   break;
 case 249:
-#line 2167 "cs-parser.jay"
-  { yyVal = Operator.OpType.False; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2179 "cs-parser.jay"
+  {
+	  	report.Error (526, GetLocation (yyVals[0+yyTop]), "Interfaces cannot contain contructors");
+	  }
   break;
 case 250:
-#line 2169 "cs-parser.jay"
-  { yyVal = Operator.OpType.Addition; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2183 "cs-parser.jay"
+  {
+	  	report.Error (524, GetLocation (yyVals[0+yyTop]), "Interfaces cannot declare classes, structs, interfaces, delegates, or enumerations");
+	  }
   break;
 case 251:
-#line 2170 "cs-parser.jay"
-  { yyVal = Operator.OpType.Subtraction; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2189 "cs-parser.jay"
+  {
+	  }
   break;
 case 252:
-#line 2172 "cs-parser.jay"
-  { yyVal = Operator.OpType.Multiply; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
-  break;
-case 253:
-#line 2173 "cs-parser.jay"
-  {  yyVal = Operator.OpType.Division; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+  case_252();
   break;
 case 254:
-#line 2174 "cs-parser.jay"
-  { yyVal = Operator.OpType.Modulus; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+  case_254();
   break;
 case 255:
-#line 2175 "cs-parser.jay"
-  { yyVal = Operator.OpType.BitwiseAnd; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2233 "cs-parser.jay"
+  {
+		valid_param_mod = ParameterModifierType.DefaultValue;
+	  }
   break;
 case 256:
-#line 2176 "cs-parser.jay"
-  { yyVal = Operator.OpType.BitwiseOr; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
-  break;
-case 257:
-#line 2177 "cs-parser.jay"
-  { yyVal = Operator.OpType.ExclusiveOr; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+  case_256();
   break;
 case 258:
-#line 2178 "cs-parser.jay"
-  { yyVal = Operator.OpType.LeftShift; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2279 "cs-parser.jay"
+  { yyVal = Operator.OpType.LogicalNot; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 259:
-#line 2179 "cs-parser.jay"
-  { yyVal = Operator.OpType.RightShift; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2280 "cs-parser.jay"
+  { yyVal = Operator.OpType.OnesComplement; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 260:
-#line 2180 "cs-parser.jay"
-  { yyVal = Operator.OpType.Equality; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2281 "cs-parser.jay"
+  { yyVal = Operator.OpType.Increment; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 261:
-#line 2181 "cs-parser.jay"
-  { yyVal = Operator.OpType.Inequality; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2282 "cs-parser.jay"
+  { yyVal = Operator.OpType.Decrement; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 262:
-#line 2182 "cs-parser.jay"
-  { yyVal = Operator.OpType.GreaterThan; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2283 "cs-parser.jay"
+  { yyVal = Operator.OpType.True; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 263:
-#line 2183 "cs-parser.jay"
-  { yyVal = Operator.OpType.LessThan; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2284 "cs-parser.jay"
+  { yyVal = Operator.OpType.False; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 264:
-#line 2184 "cs-parser.jay"
-  { yyVal = Operator.OpType.GreaterThanOrEqual; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2286 "cs-parser.jay"
+  { yyVal = Operator.OpType.Addition; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 265:
-#line 2185 "cs-parser.jay"
-  { yyVal = Operator.OpType.LessThanOrEqual; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+#line 2287 "cs-parser.jay"
+  { yyVal = Operator.OpType.Subtraction; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 266:
-#line 2192 "cs-parser.jay"
-  {
-		valid_param_mod = ParameterModifierType.DefaultValue;
-	  }
+#line 2289 "cs-parser.jay"
+  { yyVal = Operator.OpType.Multiply; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 267:
-  case_267();
+#line 2290 "cs-parser.jay"
+  {  yyVal = Operator.OpType.Division; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 268:
-#line 2215 "cs-parser.jay"
-  {
-		valid_param_mod = ParameterModifierType.DefaultValue;
-	  }
+#line 2291 "cs-parser.jay"
+  { yyVal = Operator.OpType.Modulus; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 269:
-  case_269();
+#line 2292 "cs-parser.jay"
+  { yyVal = Operator.OpType.BitwiseAnd; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 270:
-  case_270();
+#line 2293 "cs-parser.jay"
+  { yyVal = Operator.OpType.BitwiseOr; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 271:
-  case_271();
+#line 2294 "cs-parser.jay"
+  { yyVal = Operator.OpType.ExclusiveOr; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 272:
-  case_272();
+#line 2295 "cs-parser.jay"
+  { yyVal = Operator.OpType.LeftShift; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 273:
-  case_273();
+#line 2296 "cs-parser.jay"
+  { yyVal = Operator.OpType.RightShift; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 274:
-  case_274();
+#line 2297 "cs-parser.jay"
+  { yyVal = Operator.OpType.Equality; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 275:
-  case_275();
+#line 2298 "cs-parser.jay"
+  { yyVal = Operator.OpType.Inequality; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+  break;
+case 276:
+#line 2299 "cs-parser.jay"
+  { yyVal = Operator.OpType.GreaterThan; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 277:
-#line 2325 "cs-parser.jay"
-  { current_block = null; yyVal = null; }
+#line 2300 "cs-parser.jay"
+  { yyVal = Operator.OpType.LessThan; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+  break;
+case 278:
+#line 2301 "cs-parser.jay"
+  { yyVal = Operator.OpType.GreaterThanOrEqual; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
+  break;
+case 279:
+#line 2302 "cs-parser.jay"
+  { yyVal = Operator.OpType.LessThanOrEqual; savedOperatorLocation = GetLocation (yyVals[0+yyTop]); }
   break;
 case 280:
-#line 2337 "cs-parser.jay"
+#line 2309 "cs-parser.jay"
   {
-		++lexer.parsing_block;
+		valid_param_mod = ParameterModifierType.DefaultValue;
 	  }
   break;
 case 281:
   case_281();
   break;
 case 282:
-#line 2347 "cs-parser.jay"
+#line 2332 "cs-parser.jay"
   {
-		++lexer.parsing_block;
+		valid_param_mod = ParameterModifierType.DefaultValue;
 	  }
   break;
 case 283:
@@ -2292,47 +2307,42 @@ case 288:
 case 289:
   case_289();
   break;
-case 290:
-  case_290();
-  break;
 case 291:
-  case_291();
-  break;
-case 292:
-  case_292();
+#line 2442 "cs-parser.jay"
+  { current_block = null; yyVal = null; }
   break;
-case 293:
-  case_293();
+case 294:
+#line 2454 "cs-parser.jay"
+  {
+		++lexer.parsing_block;
+	  }
   break;
 case 295:
-#line 2474 "cs-parser.jay"
+  case_295();
+  break;
+case 296:
+#line 2464 "cs-parser.jay"
   {
-	  	++lexer.parsing_block;
+		++lexer.parsing_block;
 	  }
   break;
-case 296:
-  case_296();
+case 297:
+  case_297();
+  break;
+case 298:
+  case_298();
   break;
 case 299:
-#line 2492 "cs-parser.jay"
-  {
-		current_event_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
-	  }
+  case_299();
   break;
 case 300:
-#line 2496 "cs-parser.jay"
-  {
-		current_event_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
-	  }
+  case_300();
   break;
 case 301:
   case_301();
   break;
 case 302:
-#line 2509 "cs-parser.jay"
-  {
-		++lexer.parsing_block;
-	  }
+  case_302();
   break;
 case 303:
   case_303();
@@ -2341,35 +2351,44 @@ case 304:
   case_304();
   break;
 case 305:
-#line 2534 "cs-parser.jay"
-  {
-		yyVal = yyVals[0+yyTop];
-	  }
+  case_305();
   break;
-case 308:
-  case_308();
+case 306:
+  case_306();
+  break;
+case 307:
+  case_307();
   break;
 case 309:
-  case_309();
+#line 2591 "cs-parser.jay"
+  {
+	  	++lexer.parsing_block;
+	  }
   break;
 case 310:
   case_310();
   break;
-case 311:
-  case_311();
-  break;
-case 312:
-  case_312();
-  break;
 case 313:
-  case_313();
+#line 2609 "cs-parser.jay"
+  {
+		current_event_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
+	  }
   break;
 case 314:
-  case_314();
+#line 2613 "cs-parser.jay"
+  {
+		current_event_field.AddDeclarator ((FieldDeclarator) yyVals[0+yyTop]);
+	  }
   break;
 case 315:
   case_315();
   break;
+case 316:
+#line 2626 "cs-parser.jay"
+  {
+		++lexer.parsing_block;
+	  }
+  break;
 case 317:
   case_317();
   break;
@@ -2377,31 +2396,34 @@ case 318:
   case_318();
   break;
 case 319:
-  case_319();
-  break;
-case 320:
-  case_320();
-  break;
-case 321:
-  case_321();
+#line 2651 "cs-parser.jay"
+  {
+		yyVal = yyVals[0+yyTop];
+	  }
   break;
 case 322:
   case_322();
   break;
+case 323:
+  case_323();
+  break;
 case 324:
   case_324();
   break;
 case 325:
   case_325();
   break;
+case 326:
+  case_326();
+  break;
+case 327:
+  case_327();
+  break;
 case 328:
-#line 2722 "cs-parser.jay"
-  {
-		lbag.AppendToMember (current_container, GetLocation (yyVals[0+yyTop]));
-	  }
+  case_328();
   break;
-case 330:
-  case_330();
+case 329:
+  case_329();
   break;
 case 331:
   case_331();
@@ -2415,29 +2437,26 @@ case 333:
 case 334:
   case_334();
   break;
-case 336:
-#line 2796 "cs-parser.jay"
-  {
-		valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out | ParameterModifierType.Params | ParameterModifierType.DefaultValue;
-	  }
+case 335:
+  case_335();
   break;
-case 337:
-  case_337();
+case 336:
+  case_336();
   break;
 case 338:
-#line 2815 "cs-parser.jay"
-  {
-		lexer.ConstraintsParsing = false;
-	  }
+  case_338();
   break;
 case 339:
   case_339();
   break;
-case 341:
-  case_341();
+case 342:
+#line 2839 "cs-parser.jay"
+  {
+		lbag.AppendToMember (current_container, GetLocation (yyVals[0+yyTop]));
+	  }
   break;
-case 343:
-  case_343();
+case 344:
+  case_344();
   break;
 case 345:
   case_345();
@@ -2445,32 +2464,32 @@ case 345:
 case 346:
   case_346();
   break;
+case 347:
+  case_347();
+  break;
 case 348:
   case_348();
   break;
-case 349:
-  case_349();
-  break;
 case 350:
-  case_350();
+#line 2913 "cs-parser.jay"
+  {
+		valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out | ParameterModifierType.Params | ParameterModifierType.DefaultValue;
+	  }
   break;
 case 351:
   case_351();
   break;
 case 352:
-#line 2921 "cs-parser.jay"
+#line 2932 "cs-parser.jay"
   {
-		lexer.parsing_generic_declaration = true;
+		lexer.ConstraintsParsing = false;
 	  }
   break;
 case 353:
   case_353();
   break;
-case 354:
-  case_354();
-  break;
-case 356:
-  case_356();
+case 355:
+  case_355();
   break;
 case 357:
   case_357();
@@ -2478,21 +2497,18 @@ case 357:
 case 358:
   case_358();
   break;
-case 359:
-  case_359();
-  break;
 case 360:
   case_360();
   break;
 case 361:
   case_361();
   break;
+case 362:
+  case_362();
+  break;
 case 363:
   case_363();
   break;
-case 364:
-  case_364();
-  break;
 case 365:
   case_365();
   break;
@@ -2502,217 +2518,194 @@ case 366:
 case 367:
   case_367();
   break;
+case 368:
+  case_368();
+  break;
 case 369:
-#line 3046 "cs-parser.jay"
+#line 3062 "cs-parser.jay"
   {
-		yyVal = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[0+yyTop]));
+		lexer.parsing_generic_declaration = true;
 	  }
   break;
 case 370:
-#line 3053 "cs-parser.jay"
-  {
-		lexer.parsing_generic_declaration = true;
-	  }
+  case_370();
+  break;
+case 371:
+  case_371();
   break;
-case 372:
-  case_372();
+case 373:
+  case_373();
   break;
 case 374:
   case_374();
   break;
+case 375:
+  case_375();
+  break;
 case 376:
   case_376();
   break;
+case 377:
+  case_377();
+  break;
 case 378:
-#line 3091 "cs-parser.jay"
+  case_378();
+  break;
+case 380:
+  case_380();
+  break;
+case 381:
+  case_381();
+  break;
+case 382:
+  case_382();
+  break;
+case 383:
+  case_383();
+  break;
+case 384:
+  case_384();
+  break;
+case 386:
+#line 3187 "cs-parser.jay"
+  {
+		yyVal = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[0+yyTop]));
+	  }
+  break;
+case 387:
+#line 3194 "cs-parser.jay"
+  {
+		lexer.parsing_generic_declaration = true;
+	  }
+  break;
+case 393:
+  case_393();
+  break;
+case 395:
+#line 3224 "cs-parser.jay"
   {
 		yyVal = new ComposedCast ((FullNamedExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
 	  }
   break;
-case 379:
-  case_379();
+case 396:
+  case_396();
   break;
-case 380:
-#line 3110 "cs-parser.jay"
+case 397:
+#line 3243 "cs-parser.jay"
   {
 		yyVal = new ComposedCast ((ATypeNameExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
 	  }
   break;
-case 381:
-  case_381();
+case 399:
+  case_399();
   break;
-case 382:
-#line 3119 "cs-parser.jay"
+case 400:
+  case_400();
+  break;
+case 401:
+#line 3264 "cs-parser.jay"
   {
 		yyVal = new ComposedCast ((FullNamedExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
 	  }
   break;
-case 383:
-#line 3123 "cs-parser.jay"
+case 402:
+#line 3268 "cs-parser.jay"
   {
 		yyVal = new ComposedCast (new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[-1+yyTop])), (ComposedTypeSpecifier) yyVals[0+yyTop]);
 	  }
   break;
-case 384:
-  case_384();
+case 403:
+  case_403();
   break;
-case 385:
-  case_385();
+case 404:
+  case_404();
   break;
-case 386:
-  case_386();
+case 405:
+  case_405();
   break;
-case 387:
-#line 3157 "cs-parser.jay"
+case 406:
+#line 3302 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Object, GetLocation (yyVals[0+yyTop])); }
   break;
-case 388:
-#line 3158 "cs-parser.jay"
+case 407:
+#line 3303 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.String, GetLocation (yyVals[0+yyTop])); }
   break;
-case 389:
-#line 3159 "cs-parser.jay"
+case 408:
+#line 3304 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Bool, GetLocation (yyVals[0+yyTop])); }
   break;
-case 390:
-#line 3160 "cs-parser.jay"
+case 409:
+#line 3305 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Decimal, GetLocation (yyVals[0+yyTop])); }
   break;
-case 391:
-#line 3161 "cs-parser.jay"
+case 410:
+#line 3306 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Float, GetLocation (yyVals[0+yyTop])); }
   break;
-case 392:
-#line 3162 "cs-parser.jay"
+case 411:
+#line 3307 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Double, GetLocation (yyVals[0+yyTop])); }
   break;
-case 394:
-#line 3167 "cs-parser.jay"
+case 413:
+#line 3312 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.SByte, GetLocation (yyVals[0+yyTop])); }
   break;
-case 395:
-#line 3168 "cs-parser.jay"
+case 414:
+#line 3313 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Byte, GetLocation (yyVals[0+yyTop])); }
   break;
-case 396:
-#line 3169 "cs-parser.jay"
+case 415:
+#line 3314 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Short, GetLocation (yyVals[0+yyTop])); }
   break;
-case 397:
-#line 3170 "cs-parser.jay"
+case 416:
+#line 3315 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.UShort, GetLocation (yyVals[0+yyTop])); }
   break;
-case 398:
-#line 3171 "cs-parser.jay"
+case 417:
+#line 3316 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Int, GetLocation (yyVals[0+yyTop])); }
   break;
-case 399:
-#line 3172 "cs-parser.jay"
+case 418:
+#line 3317 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.UInt, GetLocation (yyVals[0+yyTop])); }
   break;
-case 400:
-#line 3173 "cs-parser.jay"
+case 419:
+#line 3318 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Long, GetLocation (yyVals[0+yyTop])); }
   break;
-case 401:
-#line 3174 "cs-parser.jay"
+case 420:
+#line 3319 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.ULong, GetLocation (yyVals[0+yyTop])); }
   break;
-case 402:
-#line 3175 "cs-parser.jay"
+case 421:
+#line 3320 "cs-parser.jay"
   { yyVal = new TypeExpression (compiler.BuiltinTypes.Char, GetLocation (yyVals[0+yyTop])); }
   break;
-case 423:
-  case_423();
-  break;
-case 424:
-  case_424();
-  break;
-case 428:
-#line 3222 "cs-parser.jay"
-  { yyVal = new NullLiteral (GetLocation (yyVals[0+yyTop])); }
-  break;
-case 429:
-#line 3226 "cs-parser.jay"
-  { yyVal = new BoolLiteral (compiler.BuiltinTypes, true, GetLocation (yyVals[0+yyTop])); }
-  break;
-case 430:
-#line 3227 "cs-parser.jay"
-  { yyVal = new BoolLiteral (compiler.BuiltinTypes, false, GetLocation (yyVals[0+yyTop])); }
-  break;
-case 435:
-  case_435();
-  break;
-case 436:
-#line 3260 "cs-parser.jay"
-  {
-		yyVal = new ParenthesizedExpression ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
-	  }
-  break;
-case 437:
-  case_437();
-  break;
-case 438:
-  case_438();
-  break;
-case 439:
-  case_439();
-  break;
-case 440:
-  case_440();
-  break;
-case 441:
-  case_441();
-  break;
-case 442:
-#line 3298 "cs-parser.jay"
-  {
-		yyVal = new CompletionMemberAccess ((Expression) yyVals[-2+yyTop], null,GetLocation (yyVals[0+yyTop]));
-	  }
-  break;
 case 443:
   case_443();
   break;
-case 444:
-#line 3306 "cs-parser.jay"
-  {
-		yyVal = new CompletionMemberAccess ((Expression) yyVals[-2+yyTop], null, lexer.Location);
-	  }
-  break;
-case 445:
-  case_445();
-  break;
-case 446:
-  case_446();
-  break;
 case 447:
-  case_447();
+#line 3363 "cs-parser.jay"
+  { yyVal = new NullLiteral (GetLocation (yyVals[0+yyTop])); }
   break;
 case 448:
-  case_448();
+#line 3367 "cs-parser.jay"
+  { yyVal = new BoolLiteral (compiler.BuiltinTypes, true, GetLocation (yyVals[0+yyTop])); }
   break;
 case 449:
-#line 3336 "cs-parser.jay"
-  { yyVal = null; }
-  break;
-case 451:
-  case_451();
-  break;
-case 452:
-  case_452();
-  break;
-case 453:
-#line 3358 "cs-parser.jay"
-  { yyVal = null; }
+#line 3368 "cs-parser.jay"
+  { yyVal = new BoolLiteral (compiler.BuiltinTypes, false, GetLocation (yyVals[0+yyTop])); }
   break;
 case 454:
-#line 3362 "cs-parser.jay"
-  {
-		yyVal = yyVals[0+yyTop];
-	}
+  case_454();
   break;
 case 455:
-  case_455();
+#line 3401 "cs-parser.jay"
+  {
+		yyVal = new ParenthesizedExpression ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
+	  }
   break;
 case 456:
   case_456();
@@ -2727,10 +2720,7 @@ case 459:
   case_459();
   break;
 case 460:
-#line 3401 "cs-parser.jay"
-  {
-		yyVal = new CompletionElementInitializer (null, GetLocation (yyVals[0+yyTop]));
-	  }
+  case_460();
   break;
 case 461:
   case_461();
@@ -2741,9 +2731,23 @@ case 462:
 case 463:
   case_463();
   break;
+case 464:
+#line 3465 "cs-parser.jay"
+  {
+		yyVal = new CompletionMemberAccess ((Expression) yyVals[-2+yyTop], null,GetLocation (yyVals[0+yyTop]));
+	  }
+  break;
+case 465:
+  case_465();
+  break;
 case 466:
-#line 3432 "cs-parser.jay"
-  { yyVal = null; }
+#line 3473 "cs-parser.jay"
+  {
+		yyVal = new CompletionMemberAccess ((Expression) yyVals[-2+yyTop], null, lexer.Location);
+	  }
+  break;
+case 467:
+  case_467();
   break;
 case 468:
   case_468();
@@ -2755,16 +2759,24 @@ case 470:
   case_470();
   break;
 case 471:
-  case_471();
-  break;
-case 472:
-  case_472();
+#line 3503 "cs-parser.jay"
+  { yyVal = null; }
   break;
 case 473:
-#line 3486 "cs-parser.jay"
+  case_473();
+  break;
+case 474:
+  case_474();
+  break;
+case 475:
+#line 3525 "cs-parser.jay"
+  { yyVal = null; }
+  break;
+case 476:
+#line 3529 "cs-parser.jay"
   {
-		yyVal = new Argument ((Expression) yyVals[0+yyTop]);
-	  }
+		yyVal = yyVals[0+yyTop];
+	}
   break;
 case 477:
   case_477();
@@ -2778,8 +2790,14 @@ case 479:
 case 480:
   case_480();
   break;
+case 481:
+  case_481();
+  break;
 case 482:
-  case_482();
+#line 3568 "cs-parser.jay"
+  {
+		yyVal = new CompletionElementInitializer (null, GetLocation (yyVals[0+yyTop]));
+	  }
   break;
 case 483:
   case_483();
@@ -2793,23 +2811,12 @@ case 485:
 case 486:
   case_486();
   break;
-case 487:
-  case_487();
-  break;
-case 488:
-  case_488();
-  break;
 case 489:
-#line 3579 "cs-parser.jay"
-  {
-	  	yyVal = new Argument ((Expression) yyVals[0+yyTop]);
-	  }
+#line 3608 "cs-parser.jay"
+  { yyVal = null; }
   break;
 case 491:
-#line 3587 "cs-parser.jay"
-  {
-		yyVal = new This (GetLocation (yyVals[0+yyTop]));
-	  }
+  case_491();
   break;
 case 492:
   case_492();
@@ -2818,28 +2825,16 @@ case 493:
   case_493();
   break;
 case 494:
-#line 3607 "cs-parser.jay"
-  {
-		yyVal = new UnaryMutator (UnaryMutator.Mode.PostIncrement, (Expression) yyVals[-1+yyTop], GetLocation (yyVals[0+yyTop]));
-	  }
+  case_494();
   break;
 case 495:
-#line 3614 "cs-parser.jay"
-  {
-		yyVal = new UnaryMutator (UnaryMutator.Mode.PostDecrement, (Expression) yyVals[-1+yyTop], GetLocation (yyVals[0+yyTop]));
-	  }
+  case_495();
   break;
 case 496:
-  case_496();
-  break;
-case 497:
-  case_497();
-  break;
-case 498:
-  case_498();
-  break;
-case 499:
-  case_499();
+#line 3662 "cs-parser.jay"
+  {
+		yyVal = new Argument ((Expression) yyVals[0+yyTop]);
+	  }
   break;
 case 500:
   case_500();
@@ -2851,26 +2846,25 @@ case 502:
   case_502();
   break;
 case 503:
-#line 3681 "cs-parser.jay"
-  {
-		++lexer.parsing_type;
-	  }
-  break;
-case 504:
-  case_504();
+  case_503();
   break;
 case 505:
   case_505();
   break;
 case 506:
-#line 3703 "cs-parser.jay"
-  {
-		yyVal = new EmptyCompletion ();
-	  }
+  case_506();
+  break;
+case 507:
+  case_507();
+  break;
+case 508:
+  case_508();
   break;
 case 509:
-#line 3712 "cs-parser.jay"
-  { yyVal = null; }
+  case_509();
+  break;
+case 510:
+  case_510();
   break;
 case 511:
   case_511();
@@ -2879,20 +2873,17 @@ case 512:
   case_512();
   break;
 case 513:
-#line 3734 "cs-parser.jay"
+#line 3766 "cs-parser.jay"
   {
-		yyVal = new EmptyCompletion ();
+	  	yyVal = new Argument ((Expression) yyVals[0+yyTop]);
 	  }
   break;
-case 514:
-#line 3738 "cs-parser.jay"
+case 515:
+#line 3774 "cs-parser.jay"
   {
-	  	yyVal = yyVals[-1+yyTop];
+		yyVal = new This (GetLocation (yyVals[0+yyTop]));
 	  }
   break;
-case 515:
-  case_515();
-  break;
 case 516:
   case_516();
   break;
@@ -2900,7 +2891,22 @@ case 517:
   case_517();
   break;
 case 518:
-  case_518();
+#line 3794 "cs-parser.jay"
+  {
+		yyVal = new UnaryMutator (UnaryMutator.Mode.PostIncrement, (Expression) yyVals[-1+yyTop], GetLocation (yyVals[0+yyTop]));
+	  }
+  break;
+case 519:
+#line 3801 "cs-parser.jay"
+  {
+		yyVal = new UnaryMutator (UnaryMutator.Mode.PostDecrement, (Expression) yyVals[-1+yyTop], GetLocation (yyVals[0+yyTop]));
+	  }
+  break;
+case 520:
+  case_520();
+  break;
+case 521:
+  case_521();
   break;
 case 522:
   case_522();
@@ -2912,55 +2918,50 @@ case 524:
   case_524();
   break;
 case 525:
-#line 3798 "cs-parser.jay"
-  {
-		yyVal = 2;
-	  }
+  case_525();
   break;
 case 526:
-#line 3802 "cs-parser.jay"
-  {
-		yyVal = ((int) yyVals[-1+yyTop]) + 1;
-	  }
+  case_526();
   break;
 case 527:
-#line 3809 "cs-parser.jay"
+#line 3868 "cs-parser.jay"
   {
-		yyVal = null;
+		++lexer.parsing_type;
 	  }
   break;
 case 528:
-#line 3813 "cs-parser.jay"
-  {
-		yyVal = yyVals[0+yyTop];
-	  }
+  case_528();
   break;
 case 529:
   case_529();
   break;
 case 530:
-  case_530();
-  break;
-case 531:
-  case_531();
-  break;
-case 532:
-  case_532();
-  break;
-case 533:
-#line 3857 "cs-parser.jay"
+#line 3890 "cs-parser.jay"
   {
-	  	lexer.TypeOfParsing = true;
+		yyVal = new EmptyCompletion ();
 	  }
   break;
-case 534:
-  case_534();
+case 533:
+#line 3899 "cs-parser.jay"
+  { yyVal = null; }
+  break;
+case 535:
+  case_535();
+  break;
+case 536:
+  case_536();
   break;
 case 537:
-  case_537();
+#line 3921 "cs-parser.jay"
+  {
+		yyVal = new EmptyCompletion ();
+	  }
   break;
 case 538:
-  case_538();
+#line 3925 "cs-parser.jay"
+  {
+	  	yyVal = yyVals[-1+yyTop];
+	  }
   break;
 case 539:
   case_539();
@@ -2974,15 +2975,6 @@ case 541:
 case 542:
   case_542();
   break;
-case 543:
-  case_543();
-  break;
-case 544:
-  case_544();
-  break;
-case 545:
-  case_545();
-  break;
 case 546:
   case_546();
   break;
@@ -2993,43 +2985,43 @@ case 548:
   case_548();
   break;
 case 549:
-  case_549();
+#line 3985 "cs-parser.jay"
+  {
+		yyVal = 2;
+	  }
   break;
 case 550:
-  case_550();
+#line 3989 "cs-parser.jay"
+  {
+		yyVal = ((int) yyVals[-1+yyTop]) + 1;
+	  }
   break;
 case 551:
-  case_551();
+#line 3996 "cs-parser.jay"
+  {
+		yyVal = null;
+	  }
   break;
 case 552:
 #line 4000 "cs-parser.jay"
   {
-		start_anonymous (false, (ParametersCompiled) yyVals[0+yyTop], false, GetLocation (yyVals[-1+yyTop]));
+		yyVal = yyVals[0+yyTop];
 	  }
   break;
 case 553:
   case_553();
   break;
 case 554:
-#line 4013 "cs-parser.jay"
-  {
-		start_anonymous (false, (ParametersCompiled) yyVals[0+yyTop], true, GetLocation (yyVals[-2+yyTop]));
-	  }
+  case_554();
   break;
 case 555:
   case_555();
   break;
 case 556:
-#line 4030 "cs-parser.jay"
-  {
-		yyVal = ParametersCompiled.Undefined;
-	  }
+  case_556();
   break;
-case 558:
-#line 4038 "cs-parser.jay"
-  {
-	  	valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
-	  }
+case 557:
+  case_557();
   break;
 case 559:
   case_559();
@@ -3037,17 +3029,14 @@ case 559:
 case 560:
   case_560();
   break;
+case 561:
+  case_561();
+  break;
 case 562:
-#line 4064 "cs-parser.jay"
-  {
-		yyVal = new Unary (Unary.Operator.LogicalNot, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
-	  }
+  case_562();
   break;
 case 563:
-#line 4068 "cs-parser.jay"
-  {
-		yyVal = new Unary (Unary.Operator.OnesComplement, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
-	  }
+  case_563();
   break;
 case 564:
   case_564();
@@ -3065,55 +3054,52 @@ case 568:
   case_568();
   break;
 case 569:
-  case_569();
+#line 4133 "cs-parser.jay"
+  {
+		start_anonymous (false, (ParametersCompiled) yyVals[0+yyTop], false, GetLocation (yyVals[-1+yyTop]));
+	  }
+  break;
+case 570:
+  case_570();
   break;
 case 571:
-#line 4132 "cs-parser.jay"
-  { 
-	  	yyVal = new Unary (Unary.Operator.UnaryPlus, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+#line 4146 "cs-parser.jay"
+  {
+		start_anonymous (false, (ParametersCompiled) yyVals[0+yyTop], true, GetLocation (yyVals[-2+yyTop]));
 	  }
   break;
 case 572:
-#line 4136 "cs-parser.jay"
-  { 
-		yyVal = new Unary (Unary.Operator.UnaryNegation, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
-	  }
+  case_572();
   break;
 case 573:
-#line 4140 "cs-parser.jay"
+#line 4163 "cs-parser.jay"
   {
-		yyVal = new UnaryMutator (UnaryMutator.Mode.PreIncrement, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
-	  }
-  break;
-case 574:
-#line 4144 "cs-parser.jay"
-  {
-		yyVal = new UnaryMutator (UnaryMutator.Mode.PreDecrement, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+		yyVal = ParametersCompiled.Undefined;
 	  }
   break;
 case 575:
-#line 4148 "cs-parser.jay"
+#line 4171 "cs-parser.jay"
   {
-		yyVal = new Indirection ((Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  	valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
 	  }
   break;
 case 576:
-#line 4152 "cs-parser.jay"
-  {
-		yyVal = new Unary (Unary.Operator.AddressOf, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
-	  }
+  case_576();
   break;
 case 577:
   case_577();
   break;
-case 578:
-  case_578();
-  break;
 case 579:
-  case_579();
+#line 4197 "cs-parser.jay"
+  {
+		yyVal = new Unary (Unary.Operator.LogicalNot, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 580:
-  case_580();
+#line 4201 "cs-parser.jay"
+  {
+		yyVal = new Unary (Unary.Operator.OnesComplement, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 581:
   case_581();
@@ -3121,6 +3107,9 @@ case 581:
 case 582:
   case_582();
   break;
+case 583:
+  case_583();
+  break;
 case 584:
   case_584();
   break;
@@ -3130,32 +3119,44 @@ case 585:
 case 586:
   case_586();
   break;
-case 587:
-  case_587();
-  break;
 case 588:
-  case_588();
+#line 4265 "cs-parser.jay"
+  { 
+	  	yyVal = new Unary (Unary.Operator.UnaryPlus, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 589:
-  case_589();
+#line 4269 "cs-parser.jay"
+  { 
+		yyVal = new Unary (Unary.Operator.UnaryNegation, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
+  break;
+case 590:
+#line 4273 "cs-parser.jay"
+  {
+		yyVal = new UnaryMutator (UnaryMutator.Mode.PreIncrement, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 591:
-  case_591();
+#line 4277 "cs-parser.jay"
+  {
+		yyVal = new UnaryMutator (UnaryMutator.Mode.PreDecrement, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 592:
-  case_592();
+#line 4281 "cs-parser.jay"
+  {
+		yyVal = new Indirection ((Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 593:
-#line 4246 "cs-parser.jay"
+#line 4285 "cs-parser.jay"
   {
-		yyVal = new As ((Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+		yyVal = new Unary (Unary.Operator.AddressOf, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
 	  }
   break;
 case 594:
-#line 4250 "cs-parser.jay"
-  {
-		yyVal = new Is ((Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
-	  }
+  case_594();
   break;
 case 595:
   case_595();
@@ -3172,8 +3173,8 @@ case 598:
 case 599:
   case_599();
   break;
-case 600:
-  case_600();
+case 601:
+  case_601();
   break;
 case 602:
   case_602();
@@ -3187,8 +3188,8 @@ case 604:
 case 605:
   case_605();
   break;
-case 607:
-  case_607();
+case 606:
+  case_606();
   break;
 case 608:
   case_608();
@@ -3203,7 +3204,10 @@ case 611:
   case_611();
   break;
 case 612:
-  case_612();
+#line 4393 "cs-parser.jay"
+  {
+		yyVal = new As ((Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 613:
   case_613();
@@ -3211,36 +3215,42 @@ case 613:
 case 614:
   case_614();
   break;
+case 615:
+  case_615();
+  break;
 case 616:
   case_616();
   break;
 case 617:
   case_617();
   break;
-case 618:
-  case_618();
-  break;
 case 619:
   case_619();
   break;
 case 621:
-  case_621();
+#line 4445 "cs-parser.jay"
+  {
+		yyVal = new Unary (Unary.Operator.UnaryPlus, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 622:
-  case_622();
+#line 4449 "cs-parser.jay"
+  {
+		yyVal = new Unary (Unary.Operator.UnaryNegation, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
+  break;
+case 623:
+  case_623();
   break;
 case 624:
   case_624();
   break;
-case 625:
-  case_625();
-  break;
-case 627:
-  case_627();
-  break;
 case 628:
   case_628();
   break;
+case 629:
+  case_629();
+  break;
 case 630:
   case_630();
   break;
@@ -3253,9 +3263,15 @@ case 633:
 case 634:
   case_634();
   break;
+case 635:
+  case_635();
+  break;
 case 636:
   case_636();
   break;
+case 637:
+  case_637();
+  break;
 case 638:
   case_638();
   break;
@@ -3265,9 +3281,6 @@ case 639:
 case 640:
   case_640();
   break;
-case 641:
-  case_641();
-  break;
 case 642:
   case_642();
   break;
@@ -3280,64 +3293,45 @@ case 644:
 case 645:
   case_645();
   break;
-case 646:
-  case_646();
-  break;
 case 647:
   case_647();
   break;
 case 648:
   case_648();
   break;
-case 649:
-  case_649();
-  break;
 case 650:
   case_650();
   break;
 case 651:
   case_651();
   break;
-case 652:
-  case_652();
-  break;
 case 653:
   case_653();
   break;
 case 654:
   case_654();
   break;
-case 655:
-  case_655();
-  break;
 case 656:
   case_656();
   break;
 case 657:
   case_657();
   break;
-case 658:
-  case_658();
-  break;
 case 659:
-#line 4626 "cs-parser.jay"
-  { yyVal = ParametersCompiled.EmptyReadOnlyParameters; }
+  case_659();
   break;
 case 660:
   case_660();
   break;
-case 661:
-#line 4637 "cs-parser.jay"
-  {
-		start_block (Location.Null);
-	  }
-  break;
 case 662:
   case_662();
   break;
 case 664:
   case_664();
   break;
+case 665:
+  case_665();
+  break;
 case 666:
   case_666();
   break;
@@ -3360,10 +3354,7 @@ case 672:
   case_672();
   break;
 case 673:
-#line 4704 "cs-parser.jay"
-  {
-	  	valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
-	  }
+  case_673();
   break;
 case 674:
   case_674();
@@ -3372,10 +3363,7 @@ case 675:
   case_675();
   break;
 case 676:
-#line 4718 "cs-parser.jay"
-  {
-	  	valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;	  
-	  }
+  case_676();
   break;
 case 677:
   case_677();
@@ -3383,70 +3371,69 @@ case 677:
 case 678:
   case_678();
   break;
+case 679:
+  case_679();
+  break;
+case 680:
+  case_680();
+  break;
+case 681:
+  case_681();
+  break;
+case 682:
+  case_682();
+  break;
+case 683:
+  case_683();
+  break;
 case 684:
-#line 4743 "cs-parser.jay"
-  {
-		yyVal = new ArglistAccess (GetLocation (yyVals[0+yyTop]));
-	  }
+  case_684();
   break;
 case 685:
-  case_685();
+#line 4821 "cs-parser.jay"
+  { yyVal = ParametersCompiled.EmptyReadOnlyParameters; }
   break;
 case 686:
   case_686();
   break;
 case 687:
-  case_687();
-  break;
-case 689:
-#line 4772 "cs-parser.jay"
+#line 4832 "cs-parser.jay"
   {
-		yyVal = new BooleanExpression ((Expression) yyVals[0+yyTop]);
+		start_block (Location.Null);
 	  }
   break;
+case 688:
+  case_688();
+  break;
 case 690:
-#line 4779 "cs-parser.jay"
-  {
-	  	yyVal = null;
-	  }
+  case_690();
   break;
 case 692:
   case_692();
   break;
 case 693:
-#line 4797 "cs-parser.jay"
-  {
-	  	yyVal = null;
-	  }
+  case_693();
   break;
 case 694:
-#line 4801 "cs-parser.jay"
-  {
-		yyVal = null;
-	  }
+  case_694();
   break;
 case 695:
-#line 4805 "cs-parser.jay"
-  {
-		yyVal = yyVals[0+yyTop];
-	  }
+  case_695();
   break;
 case 696:
-#line 4809 "cs-parser.jay"
-  {
-		++lexer.parsing_block;
-	  }
+  case_696();
   break;
 case 697:
   case_697();
   break;
 case 698:
-#line 4829 "cs-parser.jay"
-  {
-	  }
+  case_698();
   break;
 case 699:
-  case_699();
+#line 4899 "cs-parser.jay"
+  {
+	  	valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
+	  }
   break;
 case 700:
   case_700();
@@ -3455,34 +3442,23 @@ case 701:
   case_701();
   break;
 case 702:
-  case_702();
+#line 4913 "cs-parser.jay"
+  {
+	  	valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;	  
+	  }
   break;
 case 703:
-#line 4881 "cs-parser.jay"
-  { yyVal = null; }
+  case_703();
   break;
 case 704:
-#line 4883 "cs-parser.jay"
-  { yyVal = yyVals[0+yyTop]; StoreModifierLocation (Modifiers.PARTIAL, GetLocation (yyVals[0+yyTop])); }
+  case_704();
   break;
-case 705:
-  case_705();
-  break;
-case 706:
-#line 4896 "cs-parser.jay"
+case 710:
+#line 4938 "cs-parser.jay"
   {
-		lexer.parsing_modifiers = false;		
+		yyVal = new ArglistAccess (GetLocation (yyVals[0+yyTop]));
 	  }
   break;
-case 708:
-  case_708();
-  break;
-case 709:
-  case_709();
-  break;
-case 710:
-  case_710();
-  break;
 case 711:
   case_711();
   break;
@@ -3492,62 +3468,84 @@ case 712:
 case 713:
   case_713();
   break;
-case 714:
-  case_714();
-  break;
 case 715:
-  case_715();
+#line 4967 "cs-parser.jay"
+  {
+		yyVal = new BooleanExpression ((Expression) yyVals[0+yyTop]);
+	  }
   break;
 case 716:
-  case_716();
-  break;
-case 717:
-  case_717();
+#line 4974 "cs-parser.jay"
+  {
+	  	yyVal = null;
+	  }
   break;
 case 718:
   case_718();
   break;
 case 719:
-  case_719();
+#line 4995 "cs-parser.jay"
+  {
+	  	yyVal = null;
+	  }
   break;
 case 720:
-  case_720();
+#line 4999 "cs-parser.jay"
+  {
+		yyVal = null;
+	  }
   break;
 case 721:
-  case_721();
+#line 5003 "cs-parser.jay"
+  {
+		yyVal = yyVals[0+yyTop];
+	  }
   break;
 case 722:
-  case_722();
+#line 5007 "cs-parser.jay"
+  {
+		yyVal = yyVals[-1+yyTop];
+	  }
   break;
 case 723:
   case_723();
   break;
+case 724:
+  case_724();
+  break;
+case 725:
+#line 5032 "cs-parser.jay"
+  {
+	  }
+  break;
 case 726:
   case_726();
   break;
 case 727:
   case_727();
   break;
+case 728:
+  case_728();
+  break;
 case 729:
-#line 5026 "cs-parser.jay"
-  {
-		yyVal = yyVals[0+yyTop];
-	  }
+  case_729();
   break;
 case 730:
-  case_730();
+#line 5084 "cs-parser.jay"
+  { yyVal = null; }
   break;
 case 731:
-  case_731();
+#line 5086 "cs-parser.jay"
+  { yyVal = yyVals[0+yyTop]; StoreModifierLocation (Modifiers.PARTIAL, GetLocation (yyVals[0+yyTop])); }
   break;
 case 732:
   case_732();
   break;
 case 733:
-  case_733();
-  break;
-case 734:
-  case_734();
+#line 5099 "cs-parser.jay"
+  {
+		lexer.parsing_modifiers = false;		
+	  }
   break;
 case 735:
   case_735();
@@ -3559,22 +3557,13 @@ case 737:
   case_737();
   break;
 case 738:
-#line 5119 "cs-parser.jay"
-  {
-		yyVal = new SpecialContraintExpr (SpecialConstraint.Class, GetLocation (yyVals[0+yyTop]));
-	  }
+  case_738();
   break;
 case 739:
-#line 5123 "cs-parser.jay"
-  {
-		yyVal = new SpecialContraintExpr (SpecialConstraint.Struct, GetLocation (yyVals[0+yyTop]));
-	  }
+  case_739();
   break;
 case 740:
-#line 5130 "cs-parser.jay"
-  {
-		yyVal = null;
-	  }
+  case_740();
   break;
 case 741:
   case_741();
@@ -3589,10 +3578,7 @@ case 744:
   case_744();
   break;
 case 745:
-#line 5175 "cs-parser.jay"
-  {
-		yyVal = yyVals[0+yyTop];
-	  }
+  case_745();
   break;
 case 746:
   case_746();
@@ -3609,23 +3595,26 @@ case 749:
 case 750:
   case_750();
   break;
-case 751:
-  case_751();
+case 753:
+  case_753();
   break;
-case 752:
-  case_752();
+case 754:
+  case_754();
   break;
-case 757:
-#line 5237 "cs-parser.jay"
+case 756:
+#line 5229 "cs-parser.jay"
   {
-		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
+		yyVal = yyVals[0+yyTop];
 	  }
   break;
+case 757:
+  case_757();
+  break;
 case 758:
-#line 5241 "cs-parser.jay"
-  {
-		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
-	  }
+  case_758();
+  break;
+case 759:
+  case_759();
   break;
 case 760:
   case_760();
@@ -3633,95 +3622,113 @@ case 760:
 case 761:
   case_761();
   break;
+case 762:
+  case_762();
+  break;
+case 763:
+  case_763();
+  break;
 case 764:
-#line 5275 "cs-parser.jay"
+  case_764();
+  break;
+case 765:
+#line 5322 "cs-parser.jay"
   {
-		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
+		yyVal = new SpecialContraintExpr (SpecialConstraint.Class, GetLocation (yyVals[0+yyTop]));
 	  }
   break;
-case 765:
-#line 5279 "cs-parser.jay"
+case 766:
+#line 5326 "cs-parser.jay"
   {
-		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
+		yyVal = new SpecialContraintExpr (SpecialConstraint.Struct, GetLocation (yyVals[0+yyTop]));
+	  }
+  break;
+case 767:
+#line 5333 "cs-parser.jay"
+  {
+		yyVal = null;
 	  }
   break;
-case 794:
-  case_794();
+case 768:
+  case_768();
+  break;
+case 769:
+  case_769();
+  break;
+case 770:
+  case_770();
   break;
-case 795:
-  case_795();
+case 771:
+  case_771();
   break;
-case 796:
-  case_796();
+case 772:
+#line 5378 "cs-parser.jay"
+  {
+		yyVal = yyVals[0+yyTop];
+	  }
   break;
-case 797:
-  case_797();
+case 773:
+  case_773();
   break;
-case 798:
-  case_798();
+case 774:
+  case_774();
   break;
-case 801:
-  case_801();
+case 775:
+  case_775();
   break;
-case 802:
-  case_802();
+case 776:
+  case_776();
   break;
-case 803:
-  case_803();
+case 777:
+  case_777();
   break;
-case 804:
-  case_804();
+case 778:
+  case_778();
   break;
-case 805:
-#line 5423 "cs-parser.jay"
+case 779:
+  case_779();
+  break;
+case 784:
+#line 5440 "cs-parser.jay"
   {
-		yyVal = new ComposedCast ((FullNamedExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
+		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
 	  }
   break;
-case 806:
-#line 5427 "cs-parser.jay"
+case 785:
+#line 5444 "cs-parser.jay"
   {
-		yyVal = new ComposedCast (new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[-1+yyTop])), (ComposedTypeSpecifier) yyVals[0+yyTop]);
+		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
 	  }
   break;
-case 807:
-  case_807();
+case 787:
+  case_787();
   break;
-case 809:
-  case_809();
+case 788:
+  case_788();
   break;
-case 810:
-#line 5448 "cs-parser.jay"
+case 791:
+#line 5478 "cs-parser.jay"
   {
-		yyVal = ComposedTypeSpecifier.CreatePointer (GetLocation (yyVals[0+yyTop]));
+		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
 	  }
   break;
-case 812:
-#line 5456 "cs-parser.jay"
+case 792:
+#line 5482 "cs-parser.jay"
   {
-	  	yyVal = Error_AwaitAsIdentifier (yyVals[0+yyTop]);
+		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
 	  }
   break;
-case 813:
-  case_813();
-  break;
-case 814:
-  case_814();
-  break;
-case 815:
-  case_815();
-  break;
-case 816:
-  case_816();
+case 821:
+  case_821();
   break;
-case 818:
-  case_818();
+case 822:
+  case_822();
   break;
-case 820:
-  case_820();
+case 823:
+  case_823();
   break;
-case 821:
-  case_821();
+case 824:
+  case_824();
   break;
 case 825:
   case_825();
@@ -3733,16 +3740,22 @@ case 829:
   case_829();
   break;
 case 830:
-#line 5570 "cs-parser.jay"
+  case_830();
+  break;
+case 834:
+  case_834();
+  break;
+case 835:
+#line 5633 "cs-parser.jay"
   {
-		report.Error (145, lexer.Location, "A const field requires a value to be provided");
+		yyVal = ComposedTypeSpecifier.CreatePointer (GetLocation (yyVals[0+yyTop]));
 	  }
   break;
-case 831:
-  case_831();
-  break;
-case 836:
-  case_836();
+case 837:
+#line 5641 "cs-parser.jay"
+  {
+	  	yyVal = Error_AwaitAsIdentifier (yyVals[0+yyTop]);
+	  }
   break;
 case 838:
   case_838();
@@ -3754,19 +3767,10 @@ case 840:
   case_840();
   break;
 case 841:
-#line 5620 "cs-parser.jay"
-  { yyVal = yyVals[-1+yyTop]; }
-  break;
-case 842:
-  case_842();
+  case_841();
   break;
 case 843:
-#line 5630 "cs-parser.jay"
-  { yyVal = yyVals[-1+yyTop]; }
-  break;
-case 844:
-#line 5631 "cs-parser.jay"
-  { yyVal = yyVals[-1+yyTop]; }
+  case_843();
   break;
 case 845:
   case_845();
@@ -3774,50 +3778,29 @@ case 845:
 case 846:
   case_846();
   break;
-case 847:
-  case_847();
-  break;
 case 850:
   case_850();
   break;
-case 851:
-  case_851();
-  break;
-case 852:
-  case_852();
-  break;
 case 853:
-#line 5703 "cs-parser.jay"
-  {
-		start_block (GetLocation (yyVals[0+yyTop]));
-	  }
+  case_853();
   break;
 case 854:
   case_854();
   break;
 case 855:
-  case_855();
-  break;
-case 856:
-#line 5723 "cs-parser.jay"
+#line 5755 "cs-parser.jay"
   {
-		report.Warning (1522, 1, current_block.StartLocation, "Empty switch block"); 
+		report.Error (145, lexer.Location, "A const field requires a value to be provided");
 	  }
   break;
-case 860:
-#line 5733 "cs-parser.jay"
-  {
-		Error_SyntaxError (yyToken);
-	  }
+case 856:
+  case_856();
   break;
-case 862:
-  case_862();
+case 861:
+  case_861();
   break;
 case 863:
-#line 5750 "cs-parser.jay"
-  {
-		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
-	  }
+  case_863();
   break;
 case 864:
   case_864();
@@ -3826,10 +3809,22 @@ case 865:
   case_865();
   break;
 case 866:
-#line 5767 "cs-parser.jay"
-  {
-		yyVal = new SwitchLabel (null, GetLocation (yyVals[0+yyTop]));
-	  }
+#line 5805 "cs-parser.jay"
+  { yyVal = yyVals[-1+yyTop]; }
+  break;
+case 867:
+  case_867();
+  break;
+case 868:
+#line 5815 "cs-parser.jay"
+  { yyVal = yyVals[-1+yyTop]; }
+  break;
+case 869:
+#line 5816 "cs-parser.jay"
+  { yyVal = yyVals[-1+yyTop]; }
+  break;
+case 870:
+  case_870();
   break;
 case 871:
   case_871();
@@ -3837,12 +3832,6 @@ case 871:
 case 872:
   case_872();
   break;
-case 873:
-  case_873();
-  break;
-case 874:
-  case_874();
-  break;
 case 875:
   case_875();
   break;
@@ -3850,58 +3839,55 @@ case 876:
   case_876();
   break;
 case 877:
-#line 5828 "cs-parser.jay"
-  {
-		yyVal = yyVals[0+yyTop];
-	  }
+  case_877();
   break;
 case 878:
-  case_878();
-  break;
-case 879:
-#line 5843 "cs-parser.jay"
+#line 5888 "cs-parser.jay"
   {
-		yyVal = yyVals[0+yyTop];
+		start_block (GetLocation (yyVals[0+yyTop]));
 	  }
   break;
+case 879:
+  case_879();
+  break;
 case 880:
   case_880();
   break;
 case 881:
-  case_881();
-  break;
-case 882:
-#line 5864 "cs-parser.jay"
+#line 5908 "cs-parser.jay"
   {
-		yyVal = yyVals[0+yyTop];
+		report.Warning (1522, 1, current_block.StartLocation, "Empty switch block"); 
 	  }
   break;
-case 883:
-  case_883();
-  break;
-case 884:
-  case_884();
-  break;
 case 885:
-  case_885();
+#line 5918 "cs-parser.jay"
+  {
+		Error_SyntaxError (yyToken);
+	  }
   break;
-case 886:
-#line 5898 "cs-parser.jay"
-  { yyVal = new EmptyStatement (lexer.Location); }
+case 887:
+  case_887();
   break;
 case 888:
-  case_888();
+#line 5935 "cs-parser.jay"
+  {
+		current_block.AddStatement ((Statement) yyVals[0+yyTop]);
+	  }
   break;
 case 889:
   case_889();
   break;
+case 890:
+  case_890();
+  break;
 case 891:
-#line 5922 "cs-parser.jay"
-  { yyVal = null; }
+#line 5952 "cs-parser.jay"
+  {
+		yyVal = new SwitchLabel (null, GetLocation (yyVals[0+yyTop]));
+	  }
   break;
-case 893:
-#line 5927 "cs-parser.jay"
-  { yyVal = new EmptyStatement (lexer.Location); }
+case 896:
+  case_896();
   break;
 case 897:
   case_897();
@@ -3919,19 +3905,44 @@ case 901:
   case_901();
   break;
 case 902:
-  case_902();
+#line 6013 "cs-parser.jay"
+  {
+		yyVal = yyVals[0+yyTop];
+	  }
   break;
 case 903:
   case_903();
   break;
+case 904:
+#line 6028 "cs-parser.jay"
+  {
+		yyVal = yyVals[0+yyTop];
+	  }
+  break;
+case 905:
+  case_905();
+  break;
+case 906:
+  case_906();
+  break;
+case 907:
+#line 6049 "cs-parser.jay"
+  {
+		yyVal = yyVals[0+yyTop];
+	  }
+  break;
+case 908:
+  case_908();
+  break;
+case 909:
+  case_909();
+  break;
 case 910:
   case_910();
   break;
 case 911:
-  case_911();
-  break;
-case 912:
-  case_912();
+#line 6083 "cs-parser.jay"
+  { yyVal = new EmptyStatement (lexer.Location); }
   break;
 case 913:
   case_913();
@@ -3939,26 +3950,13 @@ case 913:
 case 914:
   case_914();
   break;
-case 915:
-  case_915();
-  break;
 case 916:
-  case_916();
-  break;
-case 917:
-  case_917();
+#line 6107 "cs-parser.jay"
+  { yyVal = null; }
   break;
 case 918:
-  case_918();
-  break;
-case 919:
-  case_919();
-  break;
-case 920:
-  case_920();
-  break;
-case 921:
-  case_921();
+#line 6112 "cs-parser.jay"
+  { yyVal = new EmptyStatement (lexer.Location); }
   break;
 case 922:
   case_922();
@@ -3969,27 +3967,18 @@ case 923:
 case 924:
   case_924();
   break;
+case 925:
+  case_925();
+  break;
+case 926:
+  case_926();
+  break;
 case 927:
-#line 6173 "cs-parser.jay"
-  {
-		yyVal = new TryCatch ((Block) yyVals[-1+yyTop], (List<Catch>) yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]), false);
-	  }
+  case_927();
   break;
 case 928:
   case_928();
   break;
-case 929:
-  case_929();
-  break;
-case 930:
-  case_930();
-  break;
-case 931:
-  case_931();
-  break;
-case 932:
-  case_932();
-  break;
 case 935:
   case_935();
   break;
@@ -4005,29 +3994,23 @@ case 938:
 case 939:
   case_939();
   break;
+case 940:
+  case_940();
+  break;
 case 941:
   case_941();
   break;
 case 942:
-#line 6298 "cs-parser.jay"
-  {
-		yyVal = new Checked ((Block) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
-	  }
+  case_942();
   break;
 case 943:
-#line 6305 "cs-parser.jay"
-  {
-		yyVal = new Unchecked ((Block) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
-	  }
+  case_943();
   break;
 case 944:
   case_944();
   break;
 case 945:
-#line 6315 "cs-parser.jay"
-  {
-		yyVal = new Unsafe ((Block) yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]));
-	  }
+  case_945();
   break;
 case 946:
   case_946();
@@ -4041,14 +4024,11 @@ case 948:
 case 949:
   case_949();
   break;
-case 950:
-  case_950();
-  break;
-case 951:
-  case_951();
-  break;
 case 952:
-  case_952();
+#line 6358 "cs-parser.jay"
+  {
+		yyVal = new TryCatch ((Block) yyVals[-1+yyTop], (List<Catch>) yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]), false);
+	  }
   break;
 case 953:
   case_953();
@@ -4059,18 +4039,12 @@ case 954:
 case 955:
   case_955();
   break;
+case 956:
+  case_956();
+  break;
 case 957:
   case_957();
   break;
-case 958:
-#line 6420 "cs-parser.jay"
-  {
-		Error_MissingInitializer (lexer.Location);
-	  }
-  break;
-case 959:
-  case_959();
-  break;
 case 960:
   case_960();
   break;
@@ -4086,28 +4060,28 @@ case 963:
 case 964:
   case_964();
   break;
-case 965:
-  case_965();
-  break;
 case 966:
   case_966();
   break;
 case 967:
-  case_967();
+#line 6483 "cs-parser.jay"
+  {
+		yyVal = new Checked ((Block) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
+	  }
   break;
 case 968:
-#line 6525 "cs-parser.jay"
+#line 6490 "cs-parser.jay"
   {
-		current_block = new Linq.QueryBlock (current_block, lexer.Location);
+		yyVal = new Unchecked ((Block) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
 	  }
   break;
 case 969:
   case_969();
   break;
 case 970:
-#line 6540 "cs-parser.jay"
+#line 6500 "cs-parser.jay"
   {
-		current_block = new Linq.QueryBlock (current_block, lexer.Location);
+		yyVal = new Unsafe ((Block) yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  }
   break;
 case 971:
@@ -4119,6 +4093,9 @@ case 972:
 case 973:
   case_973();
   break;
+case 974:
+  case_974();
+  break;
 case 975:
   case_975();
   break;
@@ -4126,10 +4103,7 @@ case 976:
   case_976();
   break;
 case 977:
-#line 6604 "cs-parser.jay"
-  {
-	  	current_block = new Linq.QueryBlock (current_block, lexer.Location);
-	  }
+  case_977();
   break;
 case 978:
   case_978();
@@ -4140,41 +4114,56 @@ case 979:
 case 980:
   case_980();
   break;
-case 981:
-  case_981();
-  break;
 case 982:
-#line 6643 "cs-parser.jay"
+  case_982();
+  break;
+case 983:
+#line 6605 "cs-parser.jay"
   {
-	  	yyVal = new object[] { yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]) };
+		Error_MissingInitializer (lexer.Location);
 	  }
   break;
-case 983:
-  case_983();
+case 984:
+  case_984();
   break;
 case 985:
   case_985();
   break;
+case 986:
+  case_986();
+  break;
+case 987:
+  case_987();
+  break;
+case 988:
+  case_988();
+  break;
+case 989:
+  case_989();
+  break;
+case 990:
+  case_990();
+  break;
 case 991:
-#line 6672 "cs-parser.jay"
-  {
-	  	current_block = new Linq.QueryBlock (current_block, lexer.Location);
-	  }
+  case_991();
   break;
 case 992:
   case_992();
   break;
 case 993:
-#line 6691 "cs-parser.jay"
+#line 6710 "cs-parser.jay"
   {
-	  	current_block = new Linq.QueryBlock (current_block, lexer.Location);
+		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  }
   break;
 case 994:
   case_994();
   break;
 case 995:
-  case_995();
+#line 6725 "cs-parser.jay"
+  {
+		current_block = new Linq.QueryBlock (current_block, lexer.Location);
+	  }
   break;
 case 996:
   case_996();
@@ -4185,9 +4174,6 @@ case 997:
 case 998:
   case_998();
   break;
-case 999:
-  case_999();
-  break;
 case 1000:
   case_1000();
   break;
@@ -4195,7 +4181,13 @@ case 1001:
   case_1001();
   break;
 case 1002:
-  case_1002();
+#line 6789 "cs-parser.jay"
+  {
+	  	current_block = new Linq.QueryBlock (current_block, lexer.Location);
+	  }
+  break;
+case 1003:
+  case_1003();
   break;
 case 1004:
   case_1004();
@@ -4206,41 +4198,35 @@ case 1005:
 case 1006:
   case_1006();
   break;
-case 1008:
-  case_1008();
-  break;
-case 1009:
-  case_1009();
-  break;
-case 1011:
-  case_1011();
-  break;
-case 1012:
-  case_1012();
-  break;
-case 1013:
-#line 6892 "cs-parser.jay"
+case 1007:
+#line 6828 "cs-parser.jay"
   {
-		yyVal = new Linq.OrderByAscending ((Linq.QueryBlock) current_block, (Expression)yyVals[0+yyTop]);	
+	  	yyVal = new object[] { yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]) };
 	  }
   break;
-case 1014:
-  case_1014();
+case 1008:
+  case_1008();
   break;
-case 1015:
-  case_1015();
+case 1010:
+  case_1010();
   break;
 case 1016:
-#line 6909 "cs-parser.jay"
+#line 6857 "cs-parser.jay"
   {
-		yyVal = new Linq.ThenByAscending ((Linq.QueryBlock) current_block, (Expression)yyVals[0+yyTop]);	
+	  	current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  }
   break;
 case 1017:
   case_1017();
   break;
 case 1018:
-  case_1018();
+#line 6876 "cs-parser.jay"
+  {
+	  	current_block = new Linq.QueryBlock (current_block, lexer.Location);
+	  }
+  break;
+case 1019:
+  case_1019();
   break;
 case 1020:
   case_1020();
@@ -4248,26 +4234,38 @@ case 1020:
 case 1021:
   case_1021();
   break;
+case 1022:
+  case_1022();
+  break;
+case 1023:
+  case_1023();
+  break;
 case 1024:
   case_1024();
   break;
 case 1025:
   case_1025();
   break;
+case 1026:
+  case_1026();
+  break;
+case 1027:
+  case_1027();
+  break;
+case 1029:
+  case_1029();
+  break;
+case 1030:
+  case_1030();
+  break;
+case 1031:
+  case_1031();
+  break;
 case 1033:
-#line 7034 "cs-parser.jay"
-  {
-		module.DocumentationBuilder.ParsedName = (MemberName) yyVals[0+yyTop];
-	  }
+  case_1033();
   break;
 case 1034:
-#line 7041 "cs-parser.jay"
-  {
-		module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)yyVals[0+yyTop];
-	  }
-  break;
-case 1035:
-  case_1035();
+  case_1034();
   break;
 case 1036:
   case_1036();
@@ -4276,22 +4274,22 @@ case 1037:
   case_1037();
   break;
 case 1038:
-#line 7064 "cs-parser.jay"
+#line 7077 "cs-parser.jay"
   {
-		yyVal = new MemberName ((MemberName) yyVals[-2+yyTop], MemberCache.IndexerNameAlias, Location.Null);
+		yyVal = new Linq.OrderByAscending ((Linq.QueryBlock) current_block, (Expression)yyVals[0+yyTop]);	
 	  }
   break;
 case 1039:
-#line 7068 "cs-parser.jay"
-  {
-		valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
-	  }
+  case_1039();
   break;
 case 1040:
   case_1040();
   break;
 case 1041:
-  case_1041();
+#line 7094 "cs-parser.jay"
+  {
+		yyVal = new Linq.ThenByAscending ((Linq.QueryBlock) current_block, (Expression)yyVals[0+yyTop]);	
+	  }
   break;
 case 1042:
   case_1042();
@@ -4300,37 +4298,94 @@ case 1043:
   case_1043();
   break;
 case 1045:
-#line 7104 "cs-parser.jay"
+  case_1045();
+  break;
+case 1046:
+  case_1046();
+  break;
+case 1049:
+  case_1049();
+  break;
+case 1050:
+  case_1050();
+  break;
+case 1058:
+#line 7219 "cs-parser.jay"
+  {
+		module.DocumentationBuilder.ParsedName = (MemberName) yyVals[0+yyTop];
+	  }
+  break;
+case 1059:
+#line 7226 "cs-parser.jay"
+  {
+		module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)yyVals[0+yyTop];
+	  }
+  break;
+case 1060:
+  case_1060();
+  break;
+case 1061:
+  case_1061();
+  break;
+case 1062:
+  case_1062();
+  break;
+case 1063:
+#line 7249 "cs-parser.jay"
+  {
+		yyVal = new MemberName ((MemberName) yyVals[-2+yyTop], MemberCache.IndexerNameAlias, Location.Null);
+	  }
+  break;
+case 1064:
+#line 7253 "cs-parser.jay"
+  {
+		valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
+	  }
+  break;
+case 1065:
+  case_1065();
+  break;
+case 1066:
+  case_1066();
+  break;
+case 1067:
+  case_1067();
+  break;
+case 1068:
+  case_1068();
+  break;
+case 1070:
+#line 7289 "cs-parser.jay"
   {
 		yyVal = new MemberName (((MemberName) yyVals[-2+yyTop]), (MemberName) yyVals[0+yyTop]);
 	  }
   break;
-case 1047:
-#line 7112 "cs-parser.jay"
+case 1072:
+#line 7297 "cs-parser.jay"
   {
 		valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
 	  }
   break;
-case 1048:
-#line 7116 "cs-parser.jay"
+case 1073:
+#line 7301 "cs-parser.jay"
   {
 		yyVal = yyVals[-1+yyTop];
 	  }
   break;
-case 1049:
-#line 7123 "cs-parser.jay"
+case 1074:
+#line 7308 "cs-parser.jay"
   {
 		yyVal = new List<DocumentationParameter> (0);
 	  }
   break;
-case 1051:
-  case_1051();
+case 1076:
+  case_1076();
   break;
-case 1052:
-  case_1052();
+case 1077:
+  case_1077();
   break;
-case 1053:
-  case_1053();
+case 1078:
+  case_1078();
   break;
 #line default
         }
@@ -4368,7 +4423,7 @@ case 1053:
  All more than 3 lines long rules are wrapped into a method
 */
 void case_6()
-#line 396 "cs-parser.jay"
+#line 397 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] != null) {
 			Attributes attrs = (Attributes) yyVals[0+yyTop];
@@ -4380,7 +4435,7 @@ void case_6()
 	  }
 
 void case_8()
-#line 410 "cs-parser.jay"
+#line 411 "cs-parser.jay"
 {
 		if (yyToken == Token.EXTERN_ALIAS)
 			report.Error (439, lexer.Location, "An extern alias declaration must precede all other elements");
@@ -4389,7 +4444,7 @@ void case_8()
 	  }
 
 void case_13()
-#line 430 "cs-parser.jay"
+#line 431 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		string s = lt.Value;
@@ -4412,14 +4467,14 @@ void case_13()
 	  }
 
 void case_17()
-#line 463 "cs-parser.jay"
+#line 464 "cs-parser.jay"
 {
 		if (doc_support)
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
 void case_18()
-#line 471 "cs-parser.jay"
+#line 472 "cs-parser.jay"
 {
 		var un = new UsingNamespace ((ATypeNameExpression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 		current_namespace.AddUsing (un);
@@ -4428,7 +4483,7 @@ void case_18()
 	  }
 
 void case_19()
-#line 478 "cs-parser.jay"
+#line 479 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-3+yyTop];
 		if (lang_version != LanguageVersion.ISO_1 && lt.Value == "global") {
@@ -4442,14 +4497,14 @@ void case_19()
 	  }
 
 void case_20()
-#line 490 "cs-parser.jay"
+#line 491 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = null;
 	 }
 
 void case_21()
-#line 503 "cs-parser.jay"
+#line 504 "cs-parser.jay"
 {
 		Attributes attrs = (Attributes) yyVals[-2+yyTop];
 		var name = (MemberName) yyVals[0+yyTop];
@@ -4479,14 +4534,14 @@ void case_21()
 	  }
 
 void case_22()
-#line 531 "cs-parser.jay"
+#line 532 "cs-parser.jay"
 {
 		if (doc_support)
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
 void case_23()
-#line 536 "cs-parser.jay"
+#line 537 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] != null)
 			lbag.AddLocation (current_container, GetLocation (yyVals[-9+yyTop]), GetLocation (yyVals[-6+yyTop]), GetLocation (yyVals[-1+yyTop]), GetLocation (yyVals[0+yyTop]));
@@ -4497,7 +4552,7 @@ void case_23()
 	  }
 
 void case_24()
-#line 545 "cs-parser.jay"
+#line 546 "cs-parser.jay"
 {
 		report.Error (1514, lexer.Location, "Unexpected symbol `{0}', expecting `.' or `{{'", GetSymbolName (yyToken));
 
@@ -4508,21 +4563,21 @@ void case_24()
 	  }
 
 void case_27()
-#line 559 "cs-parser.jay"
+#line 560 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 	  	yyVal = null;
 	  }
 
 void case_28()
-#line 567 "cs-parser.jay"
+#line 568 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		yyVal = new MemberName (lt.Value, lt.Location);
 	  }
 
 void case_29()
-#line 572 "cs-parser.jay"
+#line 573 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		yyVal = new MemberName ((MemberName) yyVals[-2+yyTop], lt.Value, lt.Location);		
@@ -4530,14 +4585,14 @@ void case_29()
 	  }
 
 void case_30()
-#line 578 "cs-parser.jay"
+#line 579 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new MemberName ("<invalid>", lexer.Location);
 	  }
 
 void case_43()
-#line 616 "cs-parser.jay"
+#line 617 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] != null) {
 			TypeContainer ds = (TypeContainer)yyVals[0+yyTop];
@@ -4558,7 +4613,7 @@ void case_43()
 	  }
 
 void case_45()
-#line 638 "cs-parser.jay"
+#line 639 "cs-parser.jay"
 {
 		current_namespace.UnattachedAttributes = (Attributes) yyVals[-1+yyTop];
 		report.Error (1518, lexer.Location, "Attributes must be attached to class, delegate, enum, interface or struct");
@@ -4566,14 +4621,14 @@ void case_45()
 	  }
 
 void case_53()
-#line 671 "cs-parser.jay"
+#line 672 "cs-parser.jay"
 {
 		var sect = (List<Attribute>) yyVals[0+yyTop];
 		yyVal = new Attributes (sect);
 	  }
 
 void case_54()
-#line 676 "cs-parser.jay"
+#line 677 "cs-parser.jay"
 {
 		Attributes attrs = yyVals[-1+yyTop] as Attributes;
 		var sect = (List<Attribute>) yyVals[0+yyTop];
@@ -4585,21 +4640,21 @@ void case_54()
 	  }
 
 void case_55()
-#line 689 "cs-parser.jay"
+#line 690 "cs-parser.jay"
 {
 	  	PushLocation (GetLocation (yyVals[0+yyTop]));
 		lexer.parsing_attribute_section = true;
 	  }
 
 void case_56()
-#line 694 "cs-parser.jay"
+#line 695 "cs-parser.jay"
 {
 		lexer.parsing_attribute_section = false;
 		yyVal = yyVals[0+yyTop];
 	  }
 
 void case_57()
-#line 702 "cs-parser.jay"
+#line 703 "cs-parser.jay"
 {
 		current_attr_target = (string) yyVals[-1+yyTop];
 		if (current_attr_target == "assembly" || current_attr_target == "module") {
@@ -4608,7 +4663,7 @@ void case_57()
 	  }
 
 void case_58()
-#line 709 "cs-parser.jay"
+#line 710 "cs-parser.jay"
 {
 		/* when attribute target is invalid*/
 		if (current_attr_target == string.Empty)
@@ -4629,7 +4684,7 @@ void case_58()
  	  }
 
 void case_59()
-#line 728 "cs-parser.jay"
+#line 729 "cs-parser.jay"
 {
 		yyVal = yyVals[-2+yyTop];
 		lbag.InsertLocation (yyVal, 0, PopLocation ());
@@ -4641,7 +4696,7 @@ void case_59()
 	  }
 
 void case_60()
-#line 738 "cs-parser.jay"
+#line 739 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -4654,14 +4709,14 @@ void case_60()
 	  }
 
 void case_61()
-#line 749 "cs-parser.jay"
+#line 750 "cs-parser.jay"
 {
  		CheckAttributeTarget (yyToken, GetTokenName (yyToken), GetLocation (yyVals[0+yyTop])); 
  		yyVal = null;
 	  }
 
 void case_62()
-#line 757 "cs-parser.jay"
+#line 758 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		yyVal = CheckAttributeTarget (yyToken, lt.Value, lt.Location);
@@ -4669,7 +4724,7 @@ void case_62()
 	  }
 
 void case_66()
-#line 772 "cs-parser.jay"
+#line 773 "cs-parser.jay"
 {
 		var attrs = (List<Attribute>) yyVals[-2+yyTop];
 		if (attrs != null) {
@@ -4681,7 +4736,7 @@ void case_66()
 	  }
 
 void case_68()
-#line 789 "cs-parser.jay"
+#line 790 "cs-parser.jay"
 {
 		--lexer.parsing_block;
 		
@@ -4703,7 +4758,7 @@ void case_68()
 	  }
 
 void case_71()
-#line 817 "cs-parser.jay"
+#line 818 "cs-parser.jay"
 {
 		savedAttrParenOpenLocation = GetLocation (yyVals[-2+yyTop]);
 		savedAttrParenCloseLocation = GetLocation (yyVals[0+yyTop]);
@@ -4712,7 +4767,7 @@ void case_71()
 	  }
 
 void case_73()
-#line 829 "cs-parser.jay"
+#line 830 "cs-parser.jay"
 {
 	  	Arguments a = new Arguments (4);
 		a.Add ((Argument) yyVals[0+yyTop]);
@@ -4720,7 +4775,7 @@ void case_73()
 	  }
 
 void case_74()
-#line 835 "cs-parser.jay"
+#line 836 "cs-parser.jay"
 {
 	  	Arguments a = new Arguments (4);
 		a.Add ((Argument) yyVals[0+yyTop]);  
@@ -4728,7 +4783,7 @@ void case_74()
 	  }
 
 void case_75()
-#line 841 "cs-parser.jay"
+#line 842 "cs-parser.jay"
 {
 		Arguments[] o = (Arguments[]) yyVals[-2+yyTop];
 		if (o [1] != null) {
@@ -4745,7 +4800,7 @@ void case_75()
 	  }
 
 void case_76()
-#line 856 "cs-parser.jay"
+#line 857 "cs-parser.jay"
 {
 		Arguments[] o = (Arguments[]) yyVals[-2+yyTop];
 		if (o [1] == null) {
@@ -4757,14 +4812,14 @@ void case_76()
 	  }
 
 void case_79()
-#line 874 "cs-parser.jay"
+#line 875 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = null;
 	  }
 
 void case_81()
-#line 886 "cs-parser.jay"
+#line 887 "cs-parser.jay"
 {
 	  	--lexer.parsing_block;
 	  	var lt = (LocatedToken) yyVals[-3+yyTop];
@@ -4773,7 +4828,7 @@ void case_81()
 	  }
 
 void case_82()
-#line 896 "cs-parser.jay"
+#line 897 "cs-parser.jay"
 {
 		if (lang_version <= LanguageVersion.V_3)
 			FeatureIsNotAvailable (GetLocation (yyVals[-3+yyTop]), "named argument");
@@ -4787,21 +4842,21 @@ void case_82()
 	  }
 
 void case_88()
-#line 928 "cs-parser.jay"
+#line 929 "cs-parser.jay"
 {
 		lexer.parsing_modifiers = true;
 		lexer.parsing_block = 0;
 	  }
 
 void case_89()
-#line 933 "cs-parser.jay"
+#line 934 "cs-parser.jay"
 {
 		lexer.parsing_modifiers = true;
 		lexer.parsing_block = 0;
 	  }
 
-void case_102()
-#line 953 "cs-parser.jay"
+void case_103()
+#line 955 "cs-parser.jay"
 {
 		report.Error (1519, lexer.Location, "Unexpected symbol `{0}' in class, struct, or interface member declaration",
 			GetSymbolName (yyToken));
@@ -4810,7 +4865,35 @@ void case_102()
 	  }
 
 void case_104()
-#line 969 "cs-parser.jay"
+#line 965 "cs-parser.jay"
+{
+		current_local_parameters = current_type.PrimaryConstructorParameters;
+		if (current_local_parameters == null) {
+			report.Error (9010, GetLocation (yyVals[0+yyTop]), "Primary constructor body is not allowed");
+			current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
+		}
+
+		++lexer.parsing_block;
+		start_block (GetLocation (yyVals[0+yyTop]));
+	  }
+
+void case_105()
+#line 976 "cs-parser.jay"
+{
+		current_local_parameters = null;
+		var t = current_type as ClassOrStruct;
+		if (t != null) {
+			var b = (ToplevelBlock) yyVals[0+yyTop];
+			if (t.PrimaryConstructorBlock != null) {
+				report.Error (8041, b.StartLocation, "Primary constructor already has a body");
+			} else {
+				t.PrimaryConstructorBlock = b;
+			}
+		}
+	  }
+
+void case_107()
+#line 998 "cs-parser.jay"
 { 
 		lexer.ConstraintsParsing = true;
 		valid_param_mod = ParameterModifierType.PrimaryConstructor;
@@ -4818,8 +4901,8 @@ void case_104()
 		lbag.AddMember (current_container, GetModifierLocations (), GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_105()
-#line 978 "cs-parser.jay"
+void case_108()
+#line 1007 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 		lexer.ConstraintsParsing = false;
@@ -4837,23 +4920,23 @@ void case_105()
 		lexer.parsing_modifiers = true;
 	  }
 
-void case_106()
-#line 995 "cs-parser.jay"
+void case_109()
+#line 1024 "cs-parser.jay"
 {
 		if (doc_support)
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
-void case_107()
-#line 1000 "cs-parser.jay"
+void case_110()
+#line 1029 "cs-parser.jay"
 {
 		--lexer.parsing_declaration;
 		if (doc_support)
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
-void case_108()
-#line 1006 "cs-parser.jay"
+void case_111()
+#line 1035 "cs-parser.jay"
 {
 		if (yyVals[-1+yyTop] == null) {
 			lbag.AppendToMember (current_container, GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-2+yyTop]));
@@ -4863,8 +4946,8 @@ void case_108()
 		yyVal = pop_current_class ();
 	  }
 
-void case_110()
-#line 1024 "cs-parser.jay"
+void case_113()
+#line 1053 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		var mod = (Modifiers) yyVals[-3+yyTop];
@@ -4878,8 +4961,8 @@ void case_110()
 		yyVal = current_field;
 	  }
 
-void case_111()
-#line 1037 "cs-parser.jay"
+void case_114()
+#line 1066 "cs-parser.jay"
 {
 		if (doc_support) {
 			current_field.DocComment = Lexer.consume_doc_comment ();
@@ -4891,39 +4974,39 @@ void case_111()
 		current_field = null;
 	  }
 
-void case_112()
-#line 1050 "cs-parser.jay"
+void case_115()
+#line 1079 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		current_type.AddMember (new Const (current_type, (FullNamedExpression) yyVals[-1+yyTop], (Modifiers) yyVals[-3+yyTop], MemberName.Null, (Attributes) yyVals[-4+yyTop]));
 	  }
 
-void case_117()
-#line 1075 "cs-parser.jay"
+void case_120()
+#line 1104 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 	  	yyVal = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (ConstInitializer) yyVals[0+yyTop]);
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_119()
-#line 1088 "cs-parser.jay"
+void case_122()
+#line 1117 "cs-parser.jay"
 {
 		--lexer.parsing_block;
 		yyVal = new ConstInitializer (current_field, (Expression) yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_120()
-#line 1094 "cs-parser.jay"
+void case_123()
+#line 1123 "cs-parser.jay"
 {
 		report.Error (145, lexer.Location, "A const field requires a value to be provided");
 		yyVal = null;
 	  }
 
-void case_123()
-#line 1109 "cs-parser.jay"
+void case_126()
+#line 1138 "cs-parser.jay"
 {
 	  	lexer.parsing_generic_declaration = false;
 
@@ -4937,8 +5020,8 @@ void case_123()
 		yyVal = current_field;
 	  }
 
-void case_124()
-#line 1124 "cs-parser.jay"
+void case_127()
+#line 1153 "cs-parser.jay"
 { 
 		if (doc_support) {
 			current_field.DocComment = Lexer.consume_doc_comment ();
@@ -4950,8 +5033,8 @@ void case_124()
 		current_field = null;
 	  }
 
-void case_125()
-#line 1137 "cs-parser.jay"
+void case_128()
+#line 1166 "cs-parser.jay"
 { 
 		if (lang_version < LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[-2+yyTop]), "fixed size buffers");
@@ -4963,8 +5046,8 @@ void case_125()
 		current_type.AddField (current_field);
 	  }
 
-void case_126()
-#line 1148 "cs-parser.jay"
+void case_129()
+#line 1177 "cs-parser.jay"
 {
 		if (doc_support) {
 			current_field.DocComment = Lexer.consume_doc_comment ();
@@ -4977,16 +5060,16 @@ void case_126()
 	    current_field = null;
 	  }
 
-void case_129()
-#line 1171 "cs-parser.jay"
+void case_132()
+#line 1200 "cs-parser.jay"
 {
 	  	++lexer.parsing_block;
 		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
 	  	start_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_130()
-#line 1177 "cs-parser.jay"
+void case_133()
+#line 1206 "cs-parser.jay"
 {
 	  	--lexer.parsing_block;
 		current_field.Initializer = (Expression) yyVals[0+yyTop];
@@ -4995,16 +5078,16 @@ void case_130()
 		current_local_parameters = null;
 	  }
 
-void case_135()
-#line 1204 "cs-parser.jay"
+void case_138()
+#line 1233 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 	  	yyVal = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), null);
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_137()
-#line 1214 "cs-parser.jay"
+void case_140()
+#line 1243 "cs-parser.jay"
 {
 		--lexer.parsing_block;
 		var lt = (LocatedToken) yyVals[-3+yyTop];	  
@@ -5012,39 +5095,39 @@ void case_137()
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_142()
-#line 1240 "cs-parser.jay"
+void case_145()
+#line 1269 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];	  
 		yyVal = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (ConstInitializer) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_144()
-#line 1253 "cs-parser.jay"
+void case_147()
+#line 1282 "cs-parser.jay"
 {
 		--lexer.parsing_block;
 		yyVal = new ConstInitializer (current_field, (Expression) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_145()
-#line 1259 "cs-parser.jay"
+void case_148()
+#line 1288 "cs-parser.jay"
 {
 		report.Error (443, lexer.Location, "Value or constant expected");
 		yyVal = null;
 	  }
 
-void case_148()
-#line 1269 "cs-parser.jay"
+void case_151()
+#line 1298 "cs-parser.jay"
 {
 		/* It has to be here for the parent to safely restore artificial block*/
 	  	Error_SyntaxError (yyToken);
 	  	yyVal = null;
 	  }
 
-void case_149()
-#line 1278 "cs-parser.jay"
+void case_152()
+#line 1307 "cs-parser.jay"
 {
 		if (doc_support)
 			Lexer.doc_state = XmlCommentState.NotAllowed;
@@ -5052,8 +5135,8 @@ void case_149()
 		/* Was added earlier in the case of body being eof for full ast*/
 	  }
 
-void case_150()
-#line 1285 "cs-parser.jay"
+void case_153()
+#line 1314 "cs-parser.jay"
 {
 		Method method = (Method) yyVals[-2+yyTop];
 		method.Block = (ToplevelBlock) yyVals[0+yyTop];
@@ -5080,8 +5163,8 @@ void case_150()
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
-void case_152()
-#line 1321 "cs-parser.jay"
+void case_155()
+#line 1350 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 		MemberName name = (MemberName) yyVals[-4+yyTop];
@@ -5103,8 +5186,8 @@ void case_152()
 		lexer.ConstraintsParsing = true;
 	  }
 
-void case_153()
-#line 1342 "cs-parser.jay"
+void case_156()
+#line 1371 "cs-parser.jay"
 {
 		lexer.ConstraintsParsing = false;
 
@@ -5116,15 +5199,15 @@ void case_153()
 		yyVal = yyVals[-1+yyTop];
 	  }
 
-void case_155()
-#line 1361 "cs-parser.jay"
+void case_158()
+#line 1390 "cs-parser.jay"
 {
 		lexer.parsing_generic_declaration = false;
 	  	valid_param_mod = ParameterModifierType.All;
 	  }
 
-void case_157()
-#line 1370 "cs-parser.jay"
+void case_160()
+#line 1399 "cs-parser.jay"
 {
 		lexer.ConstraintsParsing = false;
 		valid_param_mod = 0;
@@ -5153,8 +5236,8 @@ void case_157()
 		yyVal = method;
 	  }
 
-void case_158()
-#line 1401 "cs-parser.jay"
+void case_161()
+#line 1430 "cs-parser.jay"
 {
 		MemberName name = (MemberName) yyVals[-3+yyTop];
 		report.Error (1585, name.Location, 
@@ -5173,8 +5256,8 @@ void case_158()
 		yyVal = method;
 	  }
 
-void case_159()
-#line 1422 "cs-parser.jay"
+void case_162()
+#line 1451 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		current_local_parameters = ParametersCompiled.Undefined;
@@ -5191,16 +5274,37 @@ void case_159()
 		yyVal = method;
 	  }
 
-void case_164()
-#line 1451 "cs-parser.jay"
+void case_167()
+#line 1480 "cs-parser.jay"
+{
+		if (lang_version < LanguageVersion.V_6) {
+			FeatureIsNotAvailable (GetLocation (yyVals[0+yyTop]), "expression bodied members");
+		}
+
+		++lexer.parsing_block;
+		start_block (GetLocation (yyVals[0+yyTop]));
+	 }
+
+void case_168()
+#line 1489 "cs-parser.jay"
+{
+		lexer.parsing_block = 0;
+		current_block.AddStatement (new ContextualReturn ((Expression) yyVals[-1+yyTop]));
+		var b = end_block (GetLocation (yyVals[0+yyTop]));
+		b.IsCompilerGenerated = true;
+		yyVal = b;
+	 }
+
+void case_171()
+#line 1505 "cs-parser.jay"
 {
 		var pars_list = (List<Parameter>) yyVals[0+yyTop];
 	  	yyVal = new ParametersCompiled (pars_list.ToArray ());
 	  	lbag.AddLocation (yyVal, parameterListCommas);
 	  }
 
-void case_165()
-#line 1457 "cs-parser.jay"
+void case_172()
+#line 1511 "cs-parser.jay"
 {
 		var pars_list = (List<Parameter>) yyVals[-2+yyTop];
 		pars_list.Add ((Parameter) yyVals[0+yyTop]);
@@ -5210,8 +5314,8 @@ void case_165()
 	  	lbag.AddLocation (yyVal, parameterListCommas);
 	  }
 
-void case_166()
-#line 1466 "cs-parser.jay"
+void case_173()
+#line 1520 "cs-parser.jay"
 {
 		var pars_list = (List<Parameter>) yyVals[-2+yyTop];
 		pars_list.Add (new ArglistParameter (GetLocation (yyVals[0+yyTop])));
@@ -5221,8 +5325,8 @@ void case_166()
 	  	lbag.AddLocation (yyVal, parameterListCommas);
 	  }
 
-void case_167()
-#line 1475 "cs-parser.jay"
+void case_174()
+#line 1529 "cs-parser.jay"
 {
 		if (yyVals[-2+yyTop] != null)
 			report.Error (231, ((Parameter) yyVals[-2+yyTop]).Location, "A params parameter must be the last parameter in a formal parameter list");
@@ -5231,8 +5335,8 @@ void case_167()
 	  	lbag.AddLocation (yyVal, parameterListCommas);
 	  }
 
-void case_168()
-#line 1483 "cs-parser.jay"
+void case_175()
+#line 1537 "cs-parser.jay"
 {
 		if (yyVals[-2+yyTop] != null)
 			report.Error (231, ((Parameter) yyVals[-2+yyTop]).Location, "A params parameter must be the last parameter in a formal parameter list");
@@ -5246,8 +5350,8 @@ void case_168()
 	  	lbag.AddLocation (yyVal, parameterListCommas);
 	  }
 
-void case_169()
-#line 1496 "cs-parser.jay"
+void case_176()
+#line 1550 "cs-parser.jay"
 {
 		report.Error (257, GetLocation (yyVals[-2+yyTop]), "An __arglist parameter must be the last parameter in a formal parameter list");
 
@@ -5255,8 +5359,8 @@ void case_169()
 	  	lbag.AddLocation (yyVal, parameterListCommas);
 	  }
 
-void case_170()
-#line 1503 "cs-parser.jay"
+void case_177()
+#line 1557 "cs-parser.jay"
 {
 		report.Error (257, GetLocation (yyVals[-2+yyTop]), "An __arglist parameter must be the last parameter in a formal parameter list");
 
@@ -5269,15 +5373,15 @@ void case_170()
 	  	lbag.AddLocation (yyVal, parameterListCommas);
 	  }
 
-void case_173()
-#line 1523 "cs-parser.jay"
+void case_180()
+#line 1577 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = ParametersCompiled.EmptyReadOnlyParameters;
 	  }
 
-void case_174()
-#line 1531 "cs-parser.jay"
+void case_181()
+#line 1585 "cs-parser.jay"
 {
 		parameters_bucket.Clear ();
 		Parameter p = (Parameter) yyVals[0+yyTop];
@@ -5287,8 +5391,8 @@ void case_174()
 		yyVal = parameters_bucket;
 	  }
 
-void case_175()
-#line 1540 "cs-parser.jay"
+void case_182()
+#line 1594 "cs-parser.jay"
 {
 		var pars = (List<Parameter>) yyVals[-2+yyTop];
 		Parameter p = (Parameter) yyVals[0+yyTop];
@@ -5307,16 +5411,16 @@ void case_175()
 		yyVal = yyVals[-2+yyTop];
 	  }
 
-void case_176()
-#line 1564 "cs-parser.jay"
+void case_183()
+#line 1618 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		yyVal = new Parameter ((FullNamedExpression) yyVals[-1+yyTop], lt.Value, (Parameter.Modifier) yyVals[-2+yyTop], (Attributes) yyVals[-3+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, parameterModifierLocation);
 	  }
 
-void case_177()
-#line 1573 "cs-parser.jay"
+void case_184()
+#line 1627 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		report.Error (1552, lt.Location, "Array type specifier, [], must appear before parameter name");
@@ -5324,16 +5428,16 @@ void case_177()
 		lbag.AddLocation (yyVal, parameterModifierLocation);
 	  }
 
-void case_178()
-#line 1580 "cs-parser.jay"
+void case_185()
+#line 1634 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 	  	Location l = GetLocation (yyVals[0+yyTop]);
 		yyVal = new Parameter (null, null, Parameter.Modifier.NONE, (Attributes) yyVals[-1+yyTop], l);
 	  }
 
-void case_179()
-#line 1589 "cs-parser.jay"
+void case_186()
+#line 1643 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 	  	Location l = GetLocation (yyVals[0+yyTop]);
@@ -5341,8 +5445,8 @@ void case_179()
 		lbag.AddLocation (yyVal, parameterModifierLocation);
 	  }
 
-void case_181()
-#line 1604 "cs-parser.jay"
+void case_188()
+#line 1658 "cs-parser.jay"
 {
 	  	--lexer.parsing_block;
 		if (lang_version <= LanguageVersion.V_3) {
@@ -5380,8 +5484,8 @@ void case_181()
 			((Parameter) yyVal).DefaultValue = new DefaultParameterValueExpression ((Expression) yyVals[0+yyTop]);
 	  }
 
-void case_185()
-#line 1653 "cs-parser.jay"
+void case_192()
+#line 1707 "cs-parser.jay"
 {
 		Parameter.Modifier p2 = (Parameter.Modifier)yyVals[0+yyTop];
   		Parameter.Modifier mod = (Parameter.Modifier)yyVals[-1+yyTop] | p2;
@@ -5403,8 +5507,8 @@ void case_185()
   		yyVal = mod;
 	  }
 
-void case_186()
-#line 1677 "cs-parser.jay"
+void case_193()
+#line 1731 "cs-parser.jay"
 {
 	  	if ((valid_param_mod & ParameterModifierType.Ref) == 0)
 	  		Error_ParameterModifierNotValid ("ref", GetLocation (yyVals[0+yyTop]));
@@ -5412,8 +5516,8 @@ void case_186()
 	  	yyVal = Parameter.Modifier.REF;
 	  }
 
-void case_187()
-#line 1684 "cs-parser.jay"
+void case_194()
+#line 1738 "cs-parser.jay"
 {
 	  	if ((valid_param_mod & ParameterModifierType.Out) == 0)
 	  		Error_ParameterModifierNotValid ("out", GetLocation (yyVals[0+yyTop]));
@@ -5421,8 +5525,8 @@ void case_187()
 	  	yyVal = Parameter.Modifier.OUT;
 	  }
 
-void case_188()
-#line 1691 "cs-parser.jay"
+void case_195()
+#line 1745 "cs-parser.jay"
 {
 		if ((valid_param_mod & ParameterModifierType.This) == 0)
 	  		Error_ParameterModifierNotValid ("this", GetLocation (yyVals[0+yyTop]));
@@ -5433,16 +5537,16 @@ void case_188()
 		yyVal = Parameter.Modifier.This;
 	  }
 
-void case_189()
-#line 1704 "cs-parser.jay"
+void case_196()
+#line 1758 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		yyVal = new ParamsParameter ((FullNamedExpression) yyVals[-1+yyTop], lt.Value, (Attributes) yyVals[-3+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, savedLocation);
 	  }
 
-void case_190()
-#line 1710 "cs-parser.jay"
+void case_197()
+#line 1764 "cs-parser.jay"
 {
 		report.Error (1751, GetLocation (yyVals[-4+yyTop]), "Cannot specify a default value for a parameter array");
 		
@@ -5451,24 +5555,24 @@ void case_190()
 		lbag.AddLocation (yyVal, savedLocation);
 	  }
 
-void case_191()
-#line 1718 "cs-parser.jay"
+void case_198()
+#line 1772 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new ParamsParameter ((FullNamedExpression) yyVals[-1+yyTop], null, (Attributes) yyVals[-3+yyTop], Location.Null);
 	  }
 
-void case_192()
-#line 1727 "cs-parser.jay"
+void case_199()
+#line 1781 "cs-parser.jay"
 {
 		if ((valid_param_mod & ParameterModifierType.Params) == 0)
 			report.Error (1670, (GetLocation (yyVals[0+yyTop])), "The `params' modifier is not allowed in current context");
 		savedLocation = GetLocation (yyVals[0+yyTop]);
 	  }
 
-void case_193()
-#line 1733 "cs-parser.jay"
+void case_200()
+#line 1787 "cs-parser.jay"
 {
 		Parameter.Modifier mod = (Parameter.Modifier)yyVals[0+yyTop];
 		if ((mod & Parameter.Modifier.This) != 0) {
@@ -5479,22 +5583,23 @@ void case_193()
 		savedLocation = GetLocation (yyVals[-1+yyTop]);
 	  }
 
-void case_195()
-#line 1750 "cs-parser.jay"
+void case_202()
+#line 1804 "cs-parser.jay"
 {
 	  	if ((valid_param_mod & ParameterModifierType.Arglist) == 0)
 	  		report.Error (1669, GetLocation (yyVals[0+yyTop]), "__arglist is not valid in this context");
 	  }
 
-void case_196()
-#line 1761 "cs-parser.jay"
+void case_203()
+#line 1815 "cs-parser.jay"
 {
+		lexer.parsing_generic_declaration = false;
 		if (doc_support)
 			tmpComment = Lexer.consume_doc_comment ();
 	  }
 
-void case_197()
-#line 1766 "cs-parser.jay"
+void case_204()
+#line 1821 "cs-parser.jay"
 {
 		var type = (FullNamedExpression) yyVals[-3+yyTop];
 		current_property = new Property (current_type, type, (Modifiers) yyVals[-4+yyTop],
@@ -5509,8 +5614,8 @@ void case_197()
 		lexer.PropertyParsing = true;
 	  }
 
-void case_198()
-#line 1780 "cs-parser.jay"
+void case_205()
+#line 1835 "cs-parser.jay"
 {
 		lexer.PropertyParsing = false;
 		
@@ -5518,15 +5623,65 @@ void case_198()
 			current_property.DocComment = ConsumeStoredComment ();				
 	  }
 
-void case_199()
-#line 1787 "cs-parser.jay"
+void case_206()
+#line 1842 "cs-parser.jay"
 {
 		lbag.AppendToMember (current_property, GetLocation (yyVals[0+yyTop]));
-		current_property = null;
+		lexer.parsing_modifiers = true;
 	  }
 
-void case_201()
-#line 1801 "cs-parser.jay"
+void case_208()
+#line 1854 "cs-parser.jay"
+{
+		lexer.parsing_generic_declaration = false;
+		if (doc_support)
+			tmpComment = Lexer.consume_doc_comment ();
+		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
+	  }
+
+void case_209()
+#line 1861 "cs-parser.jay"
+{
+		var type = (FullNamedExpression) yyVals[-3+yyTop];
+		var property = new Property (current_type, type, (Modifiers) yyVals[-4+yyTop],
+			(MemberName) yyVals[-2+yyTop], (Attributes) yyVals[-5+yyTop]);
+
+		property.Get = new Property.GetMethod (property, Modifiers.COMPILER_GENERATED, null, property.Location);
+		property.Get.Block = (ToplevelBlock) yyVals[0+yyTop];
+
+		if (current_container.Kind == MemberKind.Interface) {
+			report.Error (531, property.Get.Block.StartLocation,
+				"`{0}': interface members cannot have a definition", property.GetSignatureForError ());
+		}
+
+		if (type.Type != null && type.Type.Kind == MemberKind.Void)
+			report.Error (547, GetLocation (yyVals[-3+yyTop]), "`{0}': property or indexer cannot have void type", property.GetSignatureForError ());
+
+		current_type.AddMember (property);
+
+		current_local_parameters = null;
+	  }
+
+void case_211()
+#line 1886 "cs-parser.jay"
+{
+		++lexer.parsing_block;
+		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
+		start_block (GetLocation (yyVals[0+yyTop]));
+	  }
+
+void case_212()
+#line 1892 "cs-parser.jay"
+{
+		--lexer.parsing_block;
+		((Property)current_property).Initializer = (Expression) yyVals[-1+yyTop];
+		lbag.AppendToMember (current_property, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
+		end_block (GetLocation (yyVals[0+yyTop]));
+		current_local_parameters = null;
+	  }
+
+void case_216()
+#line 1913 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 		var type = (FullNamedExpression) yyVals[-5+yyTop];
@@ -5550,23 +5705,33 @@ void case_201()
 		}
 
 		lexer.PropertyParsing = true;
+		current_local_parameters = (ParametersCompiled) yyVals[-1+yyTop];
 	  }
 
-void case_203()
-#line 1830 "cs-parser.jay"
+void case_217()
+#line 1939 "cs-parser.jay"
 {
+ 		lexer.PropertyParsing = false;
+		current_local_parameters = null;
+
 		if (current_property.AccessorFirst != null && current_property.AccessorFirst.Block == null)
 			((Indexer) current_property).ParameterInfo.CheckParameters (current_property);
 	  
 		if (doc_support)
 			current_property.DocComment = ConsumeStoredComment ();
 			
-		lbag.AppendToMember (current_property, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
 		current_property = null;		
 	  }
 
-void case_208()
-#line 1849 "cs-parser.jay"
+void case_219()
+#line 1959 "cs-parser.jay"
+{
+		current_property.Get = new Indexer.GetIndexerMethod (current_property, Modifiers.COMPILER_GENERATED, current_local_parameters, null, current_property.Location);
+		current_property.Get.Block = (ToplevelBlock) yyVals[0+yyTop];
+	  }
+
+void case_224()
+#line 1971 "cs-parser.jay"
 {
 	  	if (yyToken == Token.CLOSE_BRACE) {
 	  		report.Error (548, lexer.Location, "`{0}': property or indexer must have at least one accessor", current_property.GetSignatureForError ());
@@ -5578,8 +5743,8 @@ void case_208()
 		}
 	  }
 
-void case_209()
-#line 1863 "cs-parser.jay"
+void case_225()
+#line 1985 "cs-parser.jay"
 {
 		if (yyVals[-1+yyTop] != ModifierNone && lang_version == LanguageVersion.ISO_1) {
 			FeatureIsNotAvailable (GetLocation (yyVals[-1+yyTop]), "access modifiers on properties");
@@ -5601,8 +5766,8 @@ void case_209()
 		lexer.PropertyParsing = false;
 	  }
 
-void case_210()
-#line 1884 "cs-parser.jay"
+void case_226()
+#line 2006 "cs-parser.jay"
 {
 	  	if (yyVals[0+yyTop] != null) {
 	  		current_property.Get.Block = (ToplevelBlock) yyVals[0+yyTop];			
@@ -5624,8 +5789,8 @@ void case_210()
 				Lexer.doc_state = XmlCommentState.NotAllowed;
 	  }
 
-void case_211()
-#line 1908 "cs-parser.jay"
+void case_227()
+#line 2030 "cs-parser.jay"
 {
 		if (yyVals[-1+yyTop] != ModifierNone && lang_version == LanguageVersion.ISO_1) {
 			FeatureIsNotAvailable (GetLocation (yyVals[-1+yyTop]), "access modifiers on properties");
@@ -5652,8 +5817,8 @@ void case_211()
 		lexer.PropertyParsing = false;
 	  }
 
-void case_212()
-#line 1934 "cs-parser.jay"
+void case_228()
+#line 2056 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] != null) {		
 			current_property.Set.Block = (ToplevelBlock) yyVals[0+yyTop];
@@ -5675,30 +5840,30 @@ void case_212()
 			Lexer.doc_state = XmlCommentState.NotAllowed;
 	  }
 
-void case_214()
-#line 1959 "cs-parser.jay"
+void case_230()
+#line 2081 "cs-parser.jay"
 {
 		savedLocation = GetLocation (yyVals[0+yyTop]);
 	  	yyVal = null;
 	  }
 
-void case_215()
-#line 1964 "cs-parser.jay"
+void case_231()
+#line 2086 "cs-parser.jay"
 {
 	  	Error_SyntaxError (1043, yyToken, "Invalid accessor body");
 	  	yyVal = null;
 	  }
 
-void case_217()
-#line 1978 "cs-parser.jay"
+void case_233()
+#line 2100 "cs-parser.jay"
 {
 		lexer.ConstraintsParsing = true;
 		push_current_container (new Interface (current_container, (MemberName) yyVals[0+yyTop], (Modifiers) yyVals[-4+yyTop], (Attributes) yyVals[-5+yyTop]), yyVals[-3+yyTop]);
 		lbag.AddMember (current_container, GetModifierLocations (), GetLocation (yyVals[-2+yyTop]));		
 	  }
 
-void case_218()
-#line 1985 "cs-parser.jay"
+void case_234()
+#line 2107 "cs-parser.jay"
 {
 		lexer.ConstraintsParsing = false;
 
@@ -5713,16 +5878,16 @@ void case_218()
 		lexer.parsing_modifiers = true;
 	  }
 
-void case_219()
-#line 1999 "cs-parser.jay"
+void case_235()
+#line 2121 "cs-parser.jay"
 {
 		--lexer.parsing_declaration;	  
 		if (doc_support)
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
-void case_220()
-#line 2005 "cs-parser.jay"
+void case_236()
+#line 2127 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] == null) {
 			lbag.AppendToMember (current_container, GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-2+yyTop]));
@@ -5732,22 +5897,22 @@ void case_220()
 		yyVal = pop_current_class ();
 	  }
 
-void case_224()
-#line 2026 "cs-parser.jay"
+void case_240()
+#line 2148 "cs-parser.jay"
 {
 		lexer.parsing_modifiers = true;
 		lexer.parsing_block = 0;
 	  }
 
-void case_225()
-#line 2031 "cs-parser.jay"
+void case_241()
+#line 2153 "cs-parser.jay"
 {
 		lexer.parsing_modifiers = true;
 		lexer.parsing_block = 0;
 	  }
 
-void case_236()
-#line 2069 "cs-parser.jay"
+void case_252()
+#line 2191 "cs-parser.jay"
 {
 		OperatorDeclaration decl = (OperatorDeclaration) yyVals[-2+yyTop];
 		if (decl != null) {
@@ -5776,15 +5941,15 @@ void case_236()
 		current_local_parameters = null;
 	  }
 
-void case_240()
-#line 2106 "cs-parser.jay"
+void case_254()
+#line 2223 "cs-parser.jay"
 {
 		report.Error (590, GetLocation (yyVals[0+yyTop]), "User-defined operators cannot return void");
 		yyVal = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_242()
-#line 2118 "cs-parser.jay"
+void case_256()
+#line 2235 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 
@@ -5825,8 +5990,8 @@ void case_242()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-5+yyTop]), savedOperatorLocation, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_267()
-#line 2194 "cs-parser.jay"
+void case_281()
+#line 2311 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 
@@ -5846,8 +6011,8 @@ void case_267()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-6+yyTop]), GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_269()
-#line 2217 "cs-parser.jay"
+void case_283()
+#line 2334 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 		
@@ -5867,24 +6032,24 @@ void case_269()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-6+yyTop]), GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_270()
-#line 2236 "cs-parser.jay"
+void case_284()
+#line 2353 "cs-parser.jay"
 {
 	  	Error_SyntaxError (yyToken);
 		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
 		yyVal = new OperatorDeclaration (Operator.OpType.Implicit, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_271()
-#line 2242 "cs-parser.jay"
+void case_285()
+#line 2359 "cs-parser.jay"
 {
 	  	Error_SyntaxError (yyToken);
 		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
 	  	yyVal = new OperatorDeclaration (Operator.OpType.Explicit, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_272()
-#line 2252 "cs-parser.jay"
+void case_286()
+#line 2369 "cs-parser.jay"
 { 
 		Constructor c = (Constructor) yyVals[-1+yyTop];
 		c.Block = (ToplevelBlock) yyVals[0+yyTop];
@@ -5897,8 +6062,8 @@ void case_272()
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
-void case_273()
-#line 2269 "cs-parser.jay"
+void case_287()
+#line 2386 "cs-parser.jay"
 {
 		if (doc_support) {
 			tmpComment = Lexer.consume_doc_comment ();
@@ -5908,8 +6073,8 @@ void case_273()
 		valid_param_mod = ParameterModifierType.All;
 	  }
 
-void case_274()
-#line 2278 "cs-parser.jay"
+void case_288()
+#line 2395 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 		current_local_parameters = (ParametersCompiled) yyVals[-1+yyTop];
@@ -5939,8 +6104,8 @@ void case_274()
 	  	start_block (lexer.Location);
 	  }
 
-void case_275()
-#line 2307 "cs-parser.jay"
+void case_289()
+#line 2424 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] != null) {
 			var c = (Constructor) yyVals[-1+yyTop];
@@ -5956,39 +6121,39 @@ void case_275()
 		yyVal = yyVals[-1+yyTop];
 	  }
 
-void case_281()
-#line 2339 "cs-parser.jay"
+void case_295()
+#line 2456 "cs-parser.jay"
 {
 	  	--lexer.parsing_block;
 		yyVal = new ConstructorBaseInitializer ((Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-4+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_283()
-#line 2349 "cs-parser.jay"
+void case_297()
+#line 2466 "cs-parser.jay"
 {
 	  	--lexer.parsing_block;
 		yyVal = new ConstructorThisInitializer ((Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-4+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_284()
-#line 2355 "cs-parser.jay"
+void case_298()
+#line 2472 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);	  
 		yyVal = new ConstructorThisInitializer (null, GetLocation (yyVals[0+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_285()
-#line 2361 "cs-parser.jay"
+void case_299()
+#line 2478 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = null;
 	  }
 
-void case_286()
-#line 2369 "cs-parser.jay"
+void case_300()
+#line 2486 "cs-parser.jay"
 {
 		if (doc_support) {
 			tmpComment = Lexer.consume_doc_comment ();
@@ -5998,8 +6163,8 @@ void case_286()
 		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
 	  }
 
-void case_287()
-#line 2378 "cs-parser.jay"
+void case_301()
+#line 2495 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-3+yyTop];
 		if (lt.Value != current_container.MemberName.Name){
@@ -6021,8 +6186,8 @@ void case_287()
 		current_local_parameters = null;
 	  }
 
-void case_288()
-#line 2404 "cs-parser.jay"
+void case_302()
+#line 2521 "cs-parser.jay"
 {
 		current_event_field = new EventField (current_type, (FullNamedExpression) yyVals[-1+yyTop], (Modifiers) yyVals[-3+yyTop], (MemberName) yyVals[0+yyTop], (Attributes) yyVals[-4+yyTop]);
 		current_type.AddMember (current_event_field);
@@ -6035,8 +6200,8 @@ void case_288()
 		yyVal = current_event_field;
 	  }
 
-void case_289()
-#line 2418 "cs-parser.jay"
+void case_303()
+#line 2535 "cs-parser.jay"
 {
 		if (doc_support) {
 			current_event_field.DocComment = Lexer.consume_doc_comment ();
@@ -6050,8 +6215,8 @@ void case_289()
 		current_event_field = null;
 	  }
 
-void case_290()
-#line 2434 "cs-parser.jay"
+void case_304()
+#line 2551 "cs-parser.jay"
 {
 		current_event = new EventProperty (current_type, (FullNamedExpression) yyVals[-2+yyTop], (Modifiers) yyVals[-4+yyTop], (MemberName) yyVals[-1+yyTop], (Attributes) yyVals[-5+yyTop]);
 		current_type.AddMember (current_event);
@@ -6060,8 +6225,8 @@ void case_290()
 		lexer.EventParsing = true;
 	  }
 
-void case_291()
-#line 2442 "cs-parser.jay"
+void case_305()
+#line 2559 "cs-parser.jay"
 {
 		if (current_container.Kind == MemberKind.Interface)
 			report.Error (69, GetLocation (yyVals[-2+yyTop]), "Event in interface cannot have add or remove accessors");
@@ -6069,8 +6234,8 @@ void case_291()
 		lexer.EventParsing = false;
 	  }
 
-void case_292()
-#line 2449 "cs-parser.jay"
+void case_306()
+#line 2566 "cs-parser.jay"
 {
 		if (doc_support) {
 			current_event.DocComment = Lexer.consume_doc_comment ();
@@ -6082,32 +6247,32 @@ void case_292()
 		current_local_parameters = null;
 	  }
 
-void case_293()
-#line 2462 "cs-parser.jay"
+void case_307()
+#line 2579 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		current_type.AddMember (new EventField (current_type, (FullNamedExpression) yyVals[-1+yyTop], (Modifiers) yyVals[-3+yyTop], MemberName.Null, (Attributes) yyVals[-4+yyTop]));
 	  }
 
-void case_296()
-#line 2476 "cs-parser.jay"
+void case_310()
+#line 2593 "cs-parser.jay"
 {
 	  	--lexer.parsing_block;
 	  	savedEventAssignLocation = GetLocation (yyVals[-2+yyTop]);
 		current_event_field.Initializer = (Expression) yyVals[0+yyTop];
 	  }
 
-void case_301()
-#line 2501 "cs-parser.jay"
+void case_315()
+#line 2618 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 	  	yyVal = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), null);
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_303()
-#line 2511 "cs-parser.jay"
+void case_317()
+#line 2628 "cs-parser.jay"
 {
 		--lexer.parsing_block;
 		var lt = (LocatedToken) yyVals[-3+yyTop];	  
@@ -6115,8 +6280,8 @@ void case_303()
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_304()
-#line 2520 "cs-parser.jay"
+void case_318()
+#line 2637 "cs-parser.jay"
 {
 		if (current_container.Kind == MemberKind.Interface) {
 			report.Error (68, lexer.Location, "`{0}': event in interface cannot have an initializer",
@@ -6129,29 +6294,29 @@ void case_304()
 	  	}		
 	  }
 
-void case_308()
-#line 2541 "cs-parser.jay"
+void case_322()
+#line 2658 "cs-parser.jay"
 {
 		report.Error (65, lexer.Location, "`{0}': event property must have both add and remove accessors",
 			current_event.GetSignatureForError ());
 	  }
 
-void case_309()
-#line 2546 "cs-parser.jay"
+void case_323()
+#line 2663 "cs-parser.jay"
 {
 		report.Error (65, lexer.Location, "`{0}': event property must have both add and remove accessors",
 			current_event.GetSignatureForError ());
 	  }
 
-void case_310()
-#line 2551 "cs-parser.jay"
+void case_324()
+#line 2668 "cs-parser.jay"
 { 
 		report.Error (1055, GetLocation (yyVals[0+yyTop]), "An add or remove accessor expected");
 		yyVal = null;
 	  }
 
-void case_311()
-#line 2559 "cs-parser.jay"
+void case_325()
+#line 2676 "cs-parser.jay"
 {
 	  	if (yyVals[-1+yyTop] != ModifierNone) {
 			report.Error (1609, GetLocation (yyVals[-1+yyTop]), "Modifiers cannot be placed on event accessor declarations");
@@ -6164,8 +6329,8 @@ void case_311()
 		lexer.EventParsing = false;		
 	  }
 
-void case_312()
-#line 2571 "cs-parser.jay"
+void case_326()
+#line 2688 "cs-parser.jay"
 {
 		lexer.EventParsing = true;
 	  
@@ -6179,8 +6344,8 @@ void case_312()
 		current_local_parameters = null;
 	  }
 
-void case_313()
-#line 2587 "cs-parser.jay"
+void case_327()
+#line 2704 "cs-parser.jay"
 {
 	  	if (yyVals[-1+yyTop] != ModifierNone) {
 			report.Error (1609, GetLocation (yyVals[-1+yyTop]), "Modifiers cannot be placed on event accessor declarations");
@@ -6193,8 +6358,8 @@ void case_313()
 		lexer.EventParsing = false;		
 	  }
 
-void case_314()
-#line 2599 "cs-parser.jay"
+void case_328()
+#line 2716 "cs-parser.jay"
 {
 		lexer.EventParsing = true;
 	  
@@ -6208,23 +6373,23 @@ void case_314()
 		current_local_parameters = null;
 	  }
 
-void case_315()
-#line 2615 "cs-parser.jay"
+void case_329()
+#line 2732 "cs-parser.jay"
 {
 		report.Error (73, lexer.Location, "An add or remove accessor must have a body");
 		yyVal = null;
 	  }
 
-void case_317()
-#line 2624 "cs-parser.jay"
+void case_331()
+#line 2741 "cs-parser.jay"
 {
 		current_type.UnattachedAttributes = (Attributes) yyVals[-1+yyTop];
 		report.Error (1519, GetLocation (yyVals[-1+yyTop]), "An attribute is missing member declaration");
 		lexer.putback ('}');
 	  }
 
-void case_318()
-#line 2635 "cs-parser.jay"
+void case_332()
+#line 2752 "cs-parser.jay"
 {
 		report.Error (1519, lexer.Location, "Unexpected symbol `}' in class, struct, or interface member declaration");
  
@@ -6238,15 +6403,15 @@ void case_318()
 		yyVal = current_field;
 	  }
 
-void case_319()
-#line 2655 "cs-parser.jay"
+void case_333()
+#line 2772 "cs-parser.jay"
 {
 		if (doc_support)
 			enumTypeComment = Lexer.consume_doc_comment ();
 	  }
 
-void case_320()
-#line 2660 "cs-parser.jay"
+void case_334()
+#line 2777 "cs-parser.jay"
 {
 		if (doc_support)
 			Lexer.doc_state = XmlCommentState.Allowed;
@@ -6264,8 +6429,8 @@ void case_320()
 		}
 	  }
 
-void case_321()
-#line 2677 "cs-parser.jay"
+void case_335()
+#line 2794 "cs-parser.jay"
 {
 		lexer.parsing_modifiers = true;
 	  
@@ -6274,8 +6439,8 @@ void case_321()
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
-void case_322()
-#line 2685 "cs-parser.jay"
+void case_336()
+#line 2802 "cs-parser.jay"
 {
 		lbag.AppendToMember (current_container, GetLocation (yyVals[-1+yyTop]));
 		if (yyVals[0+yyTop] != null) {
@@ -6292,29 +6457,29 @@ void case_322()
 		yyVal = pop_current_class ();
 	  }
 
-void case_324()
-#line 2705 "cs-parser.jay"
+void case_338()
+#line 2822 "cs-parser.jay"
 {
 		savedLocation = GetLocation (yyVals[-1+yyTop]);
 		yyVal = yyVals[0+yyTop];
 	 }
 
-void case_325()
-#line 2710 "cs-parser.jay"
+void case_339()
+#line 2827 "cs-parser.jay"
 {
 	 	Error_TypeExpected (GetLocation (yyVals[-1+yyTop]));
 		yyVal = null;
 	 }
 
-void case_330()
-#line 2728 "cs-parser.jay"
+void case_344()
+#line 2845 "cs-parser.jay"
 {
 		lbag.AppendToMember (current_container, GetLocation (yyVals[-1+yyTop]));
 	  	yyVal = yyVals[0+yyTop];
 	  }
 
-void case_331()
-#line 2736 "cs-parser.jay"
+void case_345()
+#line 2853 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 	  	var em = new EnumMember ((Enum) current_type, new MemberName (lt.Value, lt.Location), (Attributes) yyVals[-1+yyTop]);
@@ -6328,8 +6493,8 @@ void case_331()
 		yyVal = em;
 	  }
 
-void case_332()
-#line 2749 "cs-parser.jay"
+void case_346()
+#line 2866 "cs-parser.jay"
 {
 	  	++lexer.parsing_block;
 		if (doc_support) {
@@ -6338,8 +6503,8 @@ void case_332()
 		}
 	  }
 
-void case_333()
-#line 2757 "cs-parser.jay"
+void case_347()
+#line 2874 "cs-parser.jay"
 { 
 		--lexer.parsing_block;
 		
@@ -6354,8 +6519,8 @@ void case_333()
 		yyVal = em;
 	  }
 
-void case_334()
-#line 2771 "cs-parser.jay"
+void case_348()
+#line 2888 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 	  
@@ -6371,8 +6536,8 @@ void case_334()
 		yyVal = em;
 	  }
 
-void case_337()
-#line 2798 "cs-parser.jay"
+void case_351()
+#line 2915 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 
@@ -6388,8 +6553,8 @@ void case_337()
 		lexer.ConstraintsParsing = true;
 	  }
 
-void case_339()
-#line 2817 "cs-parser.jay"
+void case_353()
+#line 2934 "cs-parser.jay"
 {
 		if (doc_support) {
 			current_delegate.DocComment = Lexer.consume_doc_comment ();
@@ -6405,8 +6570,8 @@ void case_339()
 		current_delegate = null;
 	  }
 
-void case_341()
-#line 2836 "cs-parser.jay"
+void case_355()
+#line 2953 "cs-parser.jay"
 {
 		if (lang_version < LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[0+yyTop]), "nullable types");
@@ -6414,8 +6579,8 @@ void case_341()
 	  	yyVal = ComposedTypeSpecifier.CreateNullable (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_343()
-#line 2847 "cs-parser.jay"
+void case_357()
+#line 2964 "cs-parser.jay"
 {
 		var lt1 = (LocatedToken) yyVals[-2+yyTop];
 		var lt2 = (LocatedToken) yyVals[-1+yyTop];
@@ -6424,23 +6589,53 @@ void case_343()
 		lbag.AddLocation (yyVal, savedLocation, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_345()
-#line 2859 "cs-parser.jay"
+void case_358()
+#line 2972 "cs-parser.jay"
+{
+		var lt1 = (LocatedToken) yyVals[-2+yyTop];
+		var lt2 = (LocatedToken) yyVals[-1+yyTop];
+		var qam = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) yyVals[0+yyTop], lt1.Location);
+		lbag.AddLocation (qam.TypeArguments, Lexer.GenericDimensionLocations);
+		yyVal = qam;
+		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
+	  }
+
+void case_360()
+#line 2985 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new MemberAccess ((Expression) yyVals[-3+yyTop], lt.Value, (TypeArguments) yyVals[0+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_346()
-#line 2868 "cs-parser.jay"
+void case_361()
+#line 2991 "cs-parser.jay"
+{
+		var lt = (LocatedToken) yyVals[-1+yyTop];
+		var ma = new MemberAccess ((Expression) yyVals[-3+yyTop], lt.Value, (int) yyVals[0+yyTop], lt.Location);
+		lbag.AddLocation (ma.TypeArguments, Lexer.GenericDimensionLocations);
+		yyVal = ma;
+		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
+	  }
+
+void case_362()
+#line 3002 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new SimpleName (lt.Value, (TypeArguments)yyVals[0+yyTop], lt.Location);
 	  }
 
-void case_348()
-#line 2880 "cs-parser.jay"
+void case_363()
+#line 3007 "cs-parser.jay"
+{  
+		var lt = (LocatedToken) yyVals[-1+yyTop];
+		var sn = new SimpleName (lt.Value, (int) yyVals[0+yyTop], lt.Location);
+		lbag.AddLocation (sn.TypeArguments, Lexer.GenericDimensionLocations);
+		yyVal = sn;
+	  }
+
+void case_365()
+#line 3021 "cs-parser.jay"
 {
 		if (lang_version < LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[-2+yyTop]), "generics");
@@ -6452,15 +6647,15 @@ void case_348()
 		yyVal = yyVals[-1+yyTop];;
 	  }
 
-void case_349()
-#line 2891 "cs-parser.jay"
+void case_366()
+#line 3032 "cs-parser.jay"
 {
 		Error_TypeExpected (lexer.Location);
 		yyVal = new TypeArguments ();
 	  }
 
-void case_350()
-#line 2899 "cs-parser.jay"
+void case_367()
+#line 3040 "cs-parser.jay"
 {
 		TypeArguments type_args = new TypeArguments ();
 		type_args.Add ((FullNamedExpression) yyVals[0+yyTop]);
@@ -6468,8 +6663,8 @@ void case_350()
 		locationListStack.Push (new List<Location> ());
 	  }
 
-void case_351()
-#line 2906 "cs-parser.jay"
+void case_368()
+#line 3047 "cs-parser.jay"
 {
 		TypeArguments type_args = (TypeArguments) yyVals[-2+yyTop];
 		type_args.Add ((FullNamedExpression) yyVals[0+yyTop]);
@@ -6477,16 +6672,16 @@ void case_351()
 		locationListStack.Peek ().Add (GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_353()
-#line 2923 "cs-parser.jay"
+void case_370()
+#line 3064 "cs-parser.jay"
 {
 		lexer.parsing_generic_declaration = false;
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		yyVal = new MemberName (lt.Value, (TypeParameters)yyVals[0+yyTop], lt.Location);
 	  }
 
-void case_354()
-#line 2932 "cs-parser.jay"
+void case_371()
+#line 3073 "cs-parser.jay"
 {
 	  	MemberName mn = (MemberName)yyVals[0+yyTop];
 	  	if (mn.TypeParameters != null)
@@ -6494,38 +6689,38 @@ void case_354()
 	  			mn.GetSignatureForError ()));
 	  }
 
-void case_356()
-#line 2943 "cs-parser.jay"
+void case_373()
+#line 3084 "cs-parser.jay"
 {
 		lexer.parsing_generic_declaration = false;	  
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new MemberName (lt.Value, (TypeParameters) yyVals[0+yyTop], (ATypeNameExpression) yyVals[-2+yyTop], lt.Location);
 	  }
 
-void case_357()
-#line 2952 "cs-parser.jay"
+void case_374()
+#line 3093 "cs-parser.jay"
 {
 		lexer.parsing_generic_declaration = false;	  
 		yyVal = new MemberName (TypeDefinition.DefaultIndexerName, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_358()
-#line 2957 "cs-parser.jay"
+void case_375()
+#line 3098 "cs-parser.jay"
 {
 		lexer.parsing_generic_declaration = false;
 		yyVal = new MemberName (TypeDefinition.DefaultIndexerName, null, (ATypeNameExpression) yyVals[-1+yyTop], GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_359()
-#line 2965 "cs-parser.jay"
+void case_376()
+#line 3106 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		yyVal = new SimpleName (lt.Value, (TypeArguments) yyVals[-1+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_360()
-#line 2971 "cs-parser.jay"
+void case_377()
+#line 3112 "cs-parser.jay"
 {
 		var lt1 = (LocatedToken) yyVals[-3+yyTop];
 		var lt2 = (LocatedToken) yyVals[-2+yyTop];
@@ -6534,16 +6729,16 @@ void case_360()
 		lbag.AddLocation (yyVal, savedLocation, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_361()
-#line 2979 "cs-parser.jay"
+void case_378()
+#line 3120 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		yyVal = new MemberAccess ((ATypeNameExpression) yyVals[-3+yyTop], lt.Value, (TypeArguments) yyVals[-1+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_363()
-#line 2989 "cs-parser.jay"
+void case_380()
+#line 3130 "cs-parser.jay"
 {
 		if (lang_version < LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[-2+yyTop]), "generics");
@@ -6555,8 +6750,8 @@ void case_363()
 		lbag.AddLocation (yyVals[-1+yyTop], list);
 	  }
 
-void case_364()
-#line 3003 "cs-parser.jay"
+void case_381()
+#line 3144 "cs-parser.jay"
 {
 		var tparams = new TypeParameters ();
 		tparams.Add ((TypeParameter)yyVals[0+yyTop]);
@@ -6564,8 +6759,8 @@ void case_364()
 		locationListStack.Push (new List<Location> ());
 	  }
 
-void case_365()
-#line 3010 "cs-parser.jay"
+void case_382()
+#line 3151 "cs-parser.jay"
 {
 		var tparams = (TypeParameters) yyVals[-2+yyTop];
 		tparams.Add ((TypeParameter)yyVals[0+yyTop]);
@@ -6573,8 +6768,8 @@ void case_365()
 		locationListStack.Peek ().Add (GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_366()
-#line 3020 "cs-parser.jay"
+void case_383()
+#line 3161 "cs-parser.jay"
 {
 		var lt = (LocatedToken)yyVals[0+yyTop];
 		var variance = (VarianceDecl) yyVals[-1+yyTop];
@@ -6583,8 +6778,8 @@ void case_366()
 			lbag.AddLocation (yyVal, savedLocation);
   	  }
 
-void case_367()
-#line 3028 "cs-parser.jay"
+void case_384()
+#line 3169 "cs-parser.jay"
 {
   	  	if (GetTokenName (yyToken) == "type")
 			report.Error (81, GetLocation (yyVals[0+yyTop]), "Type parameter declaration must be an identifier not a type");
@@ -6594,29 +6789,15 @@ void case_367()
   	  	yyVal = new TypeParameter (MemberName.Null, null, null);
   	  }
 
-void case_372()
-#line 3062 "cs-parser.jay"
+void case_393()
+#line 3213 "cs-parser.jay"
 {
-	  	Expression.Error_VoidInvalidInTheContext (GetLocation (yyVals[0+yyTop]), report);
+		report.Error (1536, GetLocation (yyVals[0+yyTop]), "Invalid parameter type `void'");
 		yyVal = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_374()
-#line 3071 "cs-parser.jay"
-{
-	  	Expression.Error_VoidInvalidInTheContext (GetLocation (yyVals[0+yyTop]), report);
-		yyVal = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[0+yyTop]));
-	  }
-
-void case_376()
-#line 3080 "cs-parser.jay"
-{
-	  	report.Error (1536, GetLocation (yyVals[0+yyTop]), "Invalid parameter type `void'");
-		yyVal = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[0+yyTop]));
-	  }
-
-void case_379()
-#line 3096 "cs-parser.jay"
+void case_396()
+#line 3229 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] != null) {
 			yyVal = new ComposedCast ((ATypeNameExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
@@ -6629,23 +6810,30 @@ void case_379()
 		}
 	  }
 
-void case_381()
-#line 3112 "cs-parser.jay"
+void case_399()
+#line 3249 "cs-parser.jay"
+{
+		Expression.Error_VoidInvalidInTheContext (GetLocation (yyVals[0+yyTop]), report);
+		yyVal = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[0+yyTop]));
+	  }
+
+void case_400()
+#line 3257 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] != null)
 			yyVal = new ComposedCast ((FullNamedExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
 	  }
 
-void case_384()
-#line 3128 "cs-parser.jay"
+void case_403()
+#line 3273 "cs-parser.jay"
 {
 		var types = new List<FullNamedExpression> (2);
 		types.Add ((FullNamedExpression) yyVals[0+yyTop]);
 		yyVal = types;
 	  }
 
-void case_385()
-#line 3134 "cs-parser.jay"
+void case_404()
+#line 3279 "cs-parser.jay"
 {
 		var types = (List<FullNamedExpression>) yyVals[-2+yyTop];
 		types.Add ((FullNamedExpression) yyVals[0+yyTop]);
@@ -6653,8 +6841,8 @@ void case_385()
 		yyVal = types;
 	  }
 
-void case_386()
-#line 3144 "cs-parser.jay"
+void case_405()
+#line 3289 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] is ComposedCast) {
 			report.Error (1521, GetLocation (yyVals[0+yyTop]), "Invalid base type `{0}'", ((ComposedCast)yyVals[0+yyTop]).GetSignatureForError ());
@@ -6662,61 +6850,75 @@ void case_386()
 		yyVal = yyVals[0+yyTop];
 	  }
 
-void case_423()
-#line 3208 "cs-parser.jay"
-{
-		var lt = (LocatedToken) yyVals[-1+yyTop];
-		yyVal = new SimpleName (lt.Value, (TypeArguments)yyVals[0+yyTop], lt.Location);	  
-	  }
-
-void case_424()
-#line 3212 "cs-parser.jay"
+void case_443()
+#line 3353 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 	       yyVal = new CompletionSimpleName (MemberName.MakeName (lt.Value, null), lt.Location);
 	  }
 
-void case_435()
-#line 3253 "cs-parser.jay"
+void case_454()
+#line 3394 "cs-parser.jay"
 {
 		yyVal = new ParenthesizedExpression ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_437()
-#line 3265 "cs-parser.jay"
+void case_456()
+#line 3406 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new MemberAccess ((Expression) yyVals[-3+yyTop], lt.Value, (TypeArguments) yyVals[0+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_438()
-#line 3271 "cs-parser.jay"
+void case_457()
+#line 3412 "cs-parser.jay"
+{
+		var lt = (LocatedToken) yyVals[-1+yyTop];
+		var ma = new MemberAccess ((Expression) yyVals[-3+yyTop], lt.Value, (int) yyVals[0+yyTop], lt.Location);
+		lbag.AddLocation (ma.TypeArguments, Lexer.GenericDimensionLocations);
+		yyVal = ma;
+		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
+	  }
+
+void case_458()
+#line 3420 "cs-parser.jay"
+{
+		if (lang_version < LanguageVersion.V_6)
+			FeatureIsNotAvailable (GetLocation (yyVals[-3+yyTop]), "null propagating operator");
+
+		var lt = (LocatedToken) yyVals[-1+yyTop];
+		yyVal = new ConditionalMemberAccess ((Expression) yyVals[-4+yyTop], lt.Value, (TypeArguments) yyVals[0+yyTop], lt.Location);
+		lbag.AddLocation (yyVal, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-2+yyTop]));
+	  }
+
+void case_459()
+#line 3429 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new MemberAccess ((Expression) yyVals[-3+yyTop], lt.Value, (TypeArguments) yyVals[0+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_439()
-#line 3277 "cs-parser.jay"
+void case_460()
+#line 3435 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new MemberAccess (new BaseThis (GetLocation (yyVals[-3+yyTop])), lt.Value, (TypeArguments) yyVals[0+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_440()
-#line 3283 "cs-parser.jay"
+void case_461()
+#line 3441 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new MemberAccess (new SimpleName ("await", ((LocatedToken) yyVals[-3+yyTop]).Location), lt.Value, (TypeArguments) yyVals[0+yyTop], lt.Location);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_441()
-#line 3289 "cs-parser.jay"
+void case_462()
+#line 3447 "cs-parser.jay"
 {
 		var lt1 = (LocatedToken) yyVals[-2+yyTop];
 		var lt2 = (LocatedToken) yyVals[-1+yyTop];
@@ -6725,29 +6927,40 @@ void case_441()
 		lbag.AddLocation (yyVal, savedLocation, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_443()
-#line 3299 "cs-parser.jay"
+void case_463()
+#line 3455 "cs-parser.jay"
+{
+		var lt1 = (LocatedToken) yyVals[-2+yyTop];
+		var lt2 = (LocatedToken) yyVals[-1+yyTop];
+		var qam = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) yyVals[0+yyTop], lt1.Location);
+		lbag.AddLocation (qam.TypeArguments, Lexer.GenericDimensionLocations);
+		yyVal = qam;
+		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
+	  }
+
+void case_465()
+#line 3466 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new CompletionMemberAccess ((Expression) yyVals[-3+yyTop], lt.Value, lt.Location);
 	  }
 
-void case_445()
-#line 3307 "cs-parser.jay"
+void case_467()
+#line 3474 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new CompletionMemberAccess ((Expression) yyVals[-3+yyTop], lt.Value, lt.Location);
  	  }
 
-void case_446()
-#line 3315 "cs-parser.jay"
+void case_468()
+#line 3482 "cs-parser.jay"
 {
 		yyVal = new Invocation ((Expression) yyVals[-3+yyTop], (Arguments) yyVals[-1+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_447()
-#line 3320 "cs-parser.jay"
+void case_469()
+#line 3487 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -6755,8 +6968,8 @@ void case_447()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_448()
-#line 3327 "cs-parser.jay"
+void case_470()
+#line 3494 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -6764,8 +6977,8 @@ void case_448()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_451()
-#line 3342 "cs-parser.jay"
+void case_473()
+#line 3509 "cs-parser.jay"
 {
 	  	if (yyVals[-1+yyTop] == null) {
 	  		yyVal = new CollectionOrObjectInitializers (GetLocation (yyVals[-2+yyTop]));
@@ -6775,23 +6988,23 @@ void case_451()
  		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_452()
-#line 3351 "cs-parser.jay"
+void case_474()
+#line 3518 "cs-parser.jay"
 {
 	  	yyVal = new CollectionOrObjectInitializers ((List<Expression>) yyVals[-2+yyTop], GetLocation (yyVals[-3+yyTop]));
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_455()
-#line 3367 "cs-parser.jay"
+void case_477()
+#line 3534 "cs-parser.jay"
 {
 	  	var a = new List<Expression> ();
 	  	a.Add ((Expression) yyVals[0+yyTop]);
 	  	yyVal = a;
 	  }
 
-void case_456()
-#line 3373 "cs-parser.jay"
+void case_478()
+#line 3540 "cs-parser.jay"
 {
 	  	var a = (List<Expression>)yyVals[-2+yyTop];
 	  	a.Add ((Expression) yyVals[0+yyTop]);
@@ -6799,31 +7012,31 @@ void case_456()
 	  	yyVal = a;
 	  }
 
-void case_457()
-#line 3379 "cs-parser.jay"
+void case_479()
+#line 3546 "cs-parser.jay"
 {
 	  	Error_SyntaxError (yyToken);
 		yyVal = yyVals[-1+yyTop];
 	  }
 
-void case_458()
-#line 3387 "cs-parser.jay"
+void case_480()
+#line 3554 "cs-parser.jay"
 {
 	  	var lt = (LocatedToken) yyVals[-2+yyTop];
 	  	yyVal = new ElementInitializer (lt.Value, (Expression)yyVals[0+yyTop], lt.Location);
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_459()
-#line 3393 "cs-parser.jay"
+void case_481()
+#line 3560 "cs-parser.jay"
 {
 	  	var lt = (LocatedToken) Error_AwaitAsIdentifier (yyVals[-2+yyTop]);
 	  	yyVal = new ElementInitializer (lt.Value, (Expression)yyVals[0+yyTop], lt.Location);
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_461()
-#line 3402 "cs-parser.jay"
+void case_483()
+#line 3569 "cs-parser.jay"
 {
 		CompletionSimpleName csn = yyVals[-1+yyTop] as CompletionSimpleName;
 		if (csn == null)
@@ -6832,8 +7045,8 @@ void case_461()
 			yyVal = new CompletionElementInitializer (csn.Prefix, csn.Location);
 	  }
 
-void case_462()
-#line 3410 "cs-parser.jay"
+void case_484()
+#line 3577 "cs-parser.jay"
 {
 		if (yyVals[-1+yyTop] == null)
 			yyVal = new CollectionElementInitializer (GetLocation (yyVals[-2+yyTop]));
@@ -6841,26 +7054,37 @@ void case_462()
 	  		yyVal = new CollectionElementInitializer ((List<Expression>)yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 			lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 		}
+		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_463()
-#line 3419 "cs-parser.jay"
+void case_485()
+#line 3587 "cs-parser.jay"
+{
+		if (lang_version < LanguageVersion.V_6)
+			FeatureIsNotAvailable (GetLocation (yyVals[-4+yyTop]), "dictionary initializer");
+
+		yyVal = new DictionaryElementInitializer ((List<Expression>)yyVals[-3+yyTop], (Expression) yyVals[0+yyTop], GetLocation (yyVals[-4+yyTop]));
+		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[-1+yyTop]));
+	  }
+
+void case_486()
+#line 3595 "cs-parser.jay"
 {
 	  	report.Error (1920, GetLocation (yyVals[-1+yyTop]), "An element initializer cannot be empty");
 		yyVal = new CollectionElementInitializer (GetLocation (yyVals[-1+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_468()
-#line 3438 "cs-parser.jay"
+void case_491()
+#line 3614 "cs-parser.jay"
 { 
 		Arguments list = new Arguments (4);
 		list.Add ((Argument) yyVals[0+yyTop]);
 		yyVal = list;
 	  }
 
-void case_469()
-#line 3444 "cs-parser.jay"
+void case_492()
+#line 3620 "cs-parser.jay"
 {
 		Arguments list = (Arguments) yyVals[-2+yyTop];
 		if (list [list.Count - 1] is NamedArgument)
@@ -6871,8 +7095,8 @@ void case_469()
 		yyVal = list;
 	  }
 
-void case_470()
-#line 3454 "cs-parser.jay"
+void case_493()
+#line 3630 "cs-parser.jay"
 {
 		Arguments list = (Arguments) yyVals[-2+yyTop];
 		NamedArgument a = (NamedArgument) yyVals[0+yyTop];
@@ -6888,8 +7112,8 @@ void case_470()
 		yyVal = list;
 	  }
 
-void case_471()
-#line 3469 "cs-parser.jay"
+void case_494()
+#line 3645 "cs-parser.jay"
 {
 	  	if (lexer.putback_char == -1)
 	  		lexer.putback (')'); /* TODO: Wrong but what can I do*/
@@ -6897,72 +7121,85 @@ void case_471()
 		yyVal = yyVals[-2+yyTop];
 	  }
 
-void case_472()
-#line 3476 "cs-parser.jay"
+void case_495()
+#line 3652 "cs-parser.jay"
 {
 	  	report.Error (839, GetLocation (yyVals[-1+yyTop]), "An argument is missing");
 	  	yyVal = null;
 	  }
 
-void case_477()
-#line 3497 "cs-parser.jay"
+void case_500()
+#line 3673 "cs-parser.jay"
 { 
 		yyVal = new Argument ((Expression) yyVals[0+yyTop], Argument.AType.Ref);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_478()
-#line 3502 "cs-parser.jay"
+void case_501()
+#line 3678 "cs-parser.jay"
 { 
 		yyVal = new Argument ((Expression) yyVals[0+yyTop], Argument.AType.Out);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_479()
-#line 3507 "cs-parser.jay"
+void case_502()
+#line 3683 "cs-parser.jay"
 {
 		yyVal = new Argument (new Arglist ((Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop])));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_480()
-#line 3512 "cs-parser.jay"
+void case_503()
+#line 3688 "cs-parser.jay"
 {
 		yyVal = new Argument (new Arglist (GetLocation (yyVals[-2+yyTop])));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_482()
-#line 3524 "cs-parser.jay"
+void case_505()
+#line 3700 "cs-parser.jay"
 {
 		yyVal = new ElementAccess ((Expression) yyVals[-3+yyTop], (Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_483()
-#line 3529 "cs-parser.jay"
+void case_506()
+#line 3705 "cs-parser.jay"
+{
+		if (lang_version < LanguageVersion.V_6)
+			FeatureIsNotAvailable (GetLocation (yyVals[-3+yyTop]), "null propagating operator");
+
+		yyVal = new ElementAccess ((Expression) yyVals[-4+yyTop], (Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop])) {
+			ConditionalAccess = true
+		};
+
+		lbag.AddLocation (yyVal, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
+	  }
+
+void case_507()
+#line 3716 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new ElementAccess ((Expression) yyVals[-3+yyTop], (Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_484()
-#line 3534 "cs-parser.jay"
+void case_508()
+#line 3721 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new ElementAccess ((Expression) yyVals[-2+yyTop], null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_485()
-#line 3542 "cs-parser.jay"
+void case_509()
+#line 3729 "cs-parser.jay"
 {
 		var list = new List<Expression> (4);
 		list.Add ((Expression) yyVals[0+yyTop]);
 		yyVal = list;
 	  }
 
-void case_486()
-#line 3548 "cs-parser.jay"
+void case_510()
+#line 3735 "cs-parser.jay"
 {
 		var list = (List<Expression>) yyVals[-2+yyTop];
 		list.Add ((Expression) yyVals[0+yyTop]);
@@ -6970,16 +7207,16 @@ void case_486()
 		yyVal = list;
 	  }
 
-void case_487()
-#line 3558 "cs-parser.jay"
+void case_511()
+#line 3745 "cs-parser.jay"
 {
 		Arguments args = new Arguments (4);
 		args.Add ((Argument) yyVals[0+yyTop]);
 		yyVal = args;
 	  }
 
-void case_488()
-#line 3564 "cs-parser.jay"
+void case_512()
+#line 3751 "cs-parser.jay"
 {
 		Arguments args = (Arguments) yyVals[-2+yyTop];
 		if (args [args.Count - 1] is NamedArgument && !(yyVals[0+yyTop] is NamedArgument))
@@ -6990,22 +7227,22 @@ void case_488()
 		yyVal = args;	  
 	  }
 
-void case_492()
-#line 3592 "cs-parser.jay"
+void case_516()
+#line 3779 "cs-parser.jay"
 {
 	  	yyVal = new ElementAccess (new BaseThis (GetLocation (yyVals[-3+yyTop])), (Arguments) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_493()
-#line 3597 "cs-parser.jay"
+void case_517()
+#line 3784 "cs-parser.jay"
 {
 	  	Error_SyntaxError (yyToken);
 		yyVal = new ElementAccess (null, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_496()
-#line 3619 "cs-parser.jay"
+void case_520()
+#line 3806 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] != null) {
 			if (lang_version <= LanguageVersion.ISO_2)
@@ -7019,8 +7256,8 @@ void case_496()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_497()
-#line 3632 "cs-parser.jay"
+void case_521()
+#line 3819 "cs-parser.jay"
 {
 		if (lang_version <= LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[-2+yyTop]), "collection initializers");
@@ -7028,8 +7265,8 @@ void case_497()
 		yyVal = new NewInitialize ((FullNamedExpression) yyVals[-1+yyTop], null, (CollectionOrObjectInitializers) yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_498()
-#line 3644 "cs-parser.jay"
+void case_522()
+#line 3831 "cs-parser.jay"
 {
 		yyVal = new ArrayCreation ((FullNamedExpression) yyVals[-5+yyTop], (List<Expression>) yyVals[-3+yyTop],
 				new ComposedTypeSpecifier (((List<Expression>) yyVals[-3+yyTop]).Count, GetLocation (yyVals[-4+yyTop])) {
@@ -7038,8 +7275,8 @@ void case_498()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_499()
-#line 3652 "cs-parser.jay"
+void case_523()
+#line 3839 "cs-parser.jay"
 {
 	  	if (yyVals[0+yyTop] == null)
 	  		report.Error (1586, GetLocation (yyVals[-3+yyTop]), "Array creation must have array size or array initializer");
@@ -7047,8 +7284,8 @@ void case_499()
 		yyVal = new ArrayCreation ((FullNamedExpression) yyVals[-2+yyTop], (ComposedTypeSpecifier) yyVals[-1+yyTop], (ArrayInitializer) yyVals[0+yyTop], GetLocation (yyVals[-3+yyTop]));
 	  }
 
-void case_500()
-#line 3659 "cs-parser.jay"
+void case_524()
+#line 3846 "cs-parser.jay"
 {
 		if (lang_version <= LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[-2+yyTop]), "implicitly typed arrays");
@@ -7056,30 +7293,30 @@ void case_500()
 		yyVal = new ImplicitlyTypedArrayCreation ((ComposedTypeSpecifier) yyVals[-1+yyTop], (ArrayInitializer) yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_501()
-#line 3666 "cs-parser.jay"
+void case_525()
+#line 3853 "cs-parser.jay"
 {
 		report.Error (178, GetLocation (yyVals[-1+yyTop]), "Invalid rank specifier, expecting `,' or `]'");
 		yyVal = new ArrayCreation ((FullNamedExpression) yyVals[-5+yyTop], null, GetLocation (yyVals[-6+yyTop]));
 	  }
 
-void case_502()
-#line 3671 "cs-parser.jay"
+void case_526()
+#line 3858 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		/* It can be any of new expression, create the most common one*/
 		yyVal = new New ((FullNamedExpression) yyVals[-1+yyTop], null, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_504()
-#line 3683 "cs-parser.jay"
+void case_528()
+#line 3870 "cs-parser.jay"
 {
 		--lexer.parsing_type;
 		yyVal = yyVals[0+yyTop];
 	  }
 
-void case_505()
-#line 3691 "cs-parser.jay"
+void case_529()
+#line 3878 "cs-parser.jay"
 {
 		if (lang_version <= LanguageVersion.ISO_2)
 	  		FeatureIsNotAvailable (GetLocation (yyVals[-3+yyTop]), "anonymous types");
@@ -7090,16 +7327,16 @@ void case_505()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_511()
-#line 3718 "cs-parser.jay"
+void case_535()
+#line 3905 "cs-parser.jay"
 {
 	  	var a = new List<AnonymousTypeParameter> (4);
 	  	a.Add ((AnonymousTypeParameter) yyVals[0+yyTop]);
 	  	yyVal = a;
 	  }
 
-void case_512()
-#line 3724 "cs-parser.jay"
+void case_536()
+#line 3911 "cs-parser.jay"
 {
 	  	var a = (List<AnonymousTypeParameter>) yyVals[-2+yyTop];
 	  	a.Add ((AnonymousTypeParameter) yyVals[0+yyTop]);
@@ -7108,60 +7345,60 @@ void case_512()
 	  	yyVal = a;
 	  }
 
-void case_515()
-#line 3743 "cs-parser.jay"
+void case_539()
+#line 3930 "cs-parser.jay"
 {
 		var lt = (LocatedToken)yyVals[-2+yyTop];
 	  	yyVal = new AnonymousTypeParameter ((Expression)yyVals[0+yyTop], lt.Value, lt.Location);
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_516()
-#line 3749 "cs-parser.jay"
+void case_540()
+#line 3936 "cs-parser.jay"
 {
 		var lt = (LocatedToken)yyVals[0+yyTop];
 	  	yyVal = new AnonymousTypeParameter (new SimpleName (lt.Value, lt.Location),
 	  		lt.Value, lt.Location);
 	  }
 
-void case_517()
-#line 3755 "cs-parser.jay"
+void case_541()
+#line 3942 "cs-parser.jay"
 {
 	  	MemberAccess ma = (MemberAccess) yyVals[0+yyTop];
 	  	yyVal = new AnonymousTypeParameter (ma, ma.Name, ma.Location);
 	  }
 
-void case_518()
-#line 3760 "cs-parser.jay"
+void case_542()
+#line 3947 "cs-parser.jay"
 {
 		report.Error (746, lexer.Location,
 			"Invalid anonymous type member declarator. Anonymous type members must be a member assignment, simple name or member access expression");
 		yyVal = null;
 	  }
 
-void case_522()
-#line 3775 "cs-parser.jay"
+void case_546()
+#line 3962 "cs-parser.jay"
 {
 	  	((ComposedTypeSpecifier) yyVals[-1+yyTop]).Next = (ComposedTypeSpecifier) yyVals[0+yyTop];
 	  	yyVal = yyVals[-1+yyTop];
 	  }
 
-void case_523()
-#line 3783 "cs-parser.jay"
+void case_547()
+#line 3970 "cs-parser.jay"
 {
 		yyVal = ComposedTypeSpecifier.CreateArrayDimension (1, GetLocation (yyVals[-1+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_524()
-#line 3788 "cs-parser.jay"
+void case_548()
+#line 3975 "cs-parser.jay"
 {
 		yyVal = ComposedTypeSpecifier.CreateArrayDimension ((int)yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_529()
-#line 3818 "cs-parser.jay"
+void case_553()
+#line 4005 "cs-parser.jay"
 {
 		var ai = new ArrayInitializer (0, GetLocation (yyVals[-1+yyTop]));
 		ai.VariableDeclaration = current_variable;
@@ -7169,8 +7406,8 @@ void case_529()
 		yyVal = ai;
 	  }
 
-void case_530()
-#line 3825 "cs-parser.jay"
+void case_554()
+#line 4012 "cs-parser.jay"
 {
 		var ai = new ArrayInitializer ((List<Expression>) yyVals[-2+yyTop], GetLocation (yyVals[-3+yyTop]));
 		ai.VariableDeclaration = current_variable;
@@ -7182,16 +7419,16 @@ void case_530()
 		yyVal = ai;
 	  }
 
-void case_531()
-#line 3839 "cs-parser.jay"
+void case_555()
+#line 4026 "cs-parser.jay"
 {
 		var list = new List<Expression> (4);
 		list.Add ((Expression) yyVals[0+yyTop]);
 		yyVal = list;
 	  }
 
-void case_532()
-#line 3845 "cs-parser.jay"
+void case_556()
+#line 4032 "cs-parser.jay"
 {
 		var list = (List<Expression>) yyVals[-2+yyTop];
 		list.Add ((Expression) yyVals[0+yyTop]);
@@ -7199,78 +7436,22 @@ void case_532()
 		yyVal = list;
 	  }
 
-void case_534()
-#line 3859 "cs-parser.jay"
+void case_557()
+#line 4042 "cs-parser.jay"
 {
-	  	lexer.TypeOfParsing = false;
-		yyVal = new TypeOf ((FullNamedExpression) yyVals[-1+yyTop], GetLocation (yyVals[-4+yyTop]));
+		yyVal = new TypeOf ((FullNamedExpression) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_537()
-#line 3870 "cs-parser.jay"
+void case_559()
+#line 4051 "cs-parser.jay"
 {
 	 	Error_TypeExpected (lexer.Location);
 	 	yyVal = null;
 	 }
 
-void case_538()
-#line 3878 "cs-parser.jay"
-{  
-		var lt = (LocatedToken) yyVals[-1+yyTop];
-
-		var sn = new SimpleName (lt.Value, (int) yyVals[0+yyTop], lt.Location);
-		yyVal = sn;
-		lbag.AddLocation (sn.TypeArguments, Lexer.GetGenericDimensionLocations ());
-	  }
-
-void case_539()
-#line 3886 "cs-parser.jay"
-{
-		var lt1 = (LocatedToken) yyVals[-2+yyTop];
-		var lt2 = (LocatedToken) yyVals[-1+yyTop];
-
-		var qam = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) yyVals[0+yyTop], lt1.Location);
-		yyVal = qam;
-		lbag.AddLocation (qam.TypeArguments, Lexer.GetGenericDimensionLocations ());
-		lbag.AddLocation (yyVal, savedLocation, GetLocation (yyVals[-1+yyTop]));
-	  }
-
-void case_540()
-#line 3896 "cs-parser.jay"
-{
-		var lt = (LocatedToken) yyVals[0+yyTop];
-		
-		yyVal = new MemberAccess ((Expression) yyVals[-2+yyTop], lt.Value, lt.Location);
-		lbag.AddLocation (yyVal, savedLocation, GetLocation (yyVals[-1+yyTop]));
-	  }
-
-void case_541()
-#line 3903 "cs-parser.jay"
-{
-		var lt = (LocatedToken) yyVals[-1+yyTop];
-		
-		var ma = new MemberAccess ((Expression) yyVals[-3+yyTop], lt.Value, (int) yyVals[0+yyTop], lt.Location);
-		yyVal = ma;
-		lbag.AddLocation (yyVal, savedLocation, GetLocation (yyVals[-2+yyTop]));
-		lbag.AddLocation (ma.TypeArguments, Lexer.GetGenericDimensionLocations ());
-	  }
-
-void case_542()
-#line 3912 "cs-parser.jay"
-{
-		var tne = (ATypeNameExpression) yyVals[-3+yyTop];
-		if (tne.HasTypeArguments)
-			Error_TypeExpected (GetLocation (yyVals[0+yyTop]));
-
-		var lt = (LocatedToken) yyVals[-1+yyTop];
-		var ma = new MemberAccess (tne, lt.Value, (int) yyVals[0+yyTop], lt.Location);		
-		yyVal = ma;
-		lbag.AddLocation (ma.TypeArguments, Lexer.GetGenericDimensionLocations ());
-	  }
-
-void case_543()
-#line 3926 "cs-parser.jay"
+void case_560()
+#line 4059 "cs-parser.jay"
 {
 		if (lang_version < LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[0+yyTop]), "generics");
@@ -7278,8 +7459,8 @@ void case_543()
 		yyVal = yyVals[0+yyTop];
 	  }
 
-void case_544()
-#line 3936 "cs-parser.jay"
+void case_561()
+#line 4069 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		if (lang_version == LanguageVersion.ISO_1)
@@ -7288,15 +7469,15 @@ void case_544()
 		yyVal = lt;		
 	  }
 
-void case_545()
-#line 3947 "cs-parser.jay"
+void case_562()
+#line 4080 "cs-parser.jay"
 { 
 		yyVal = new SizeOf ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_546()
-#line 3952 "cs-parser.jay"
+void case_563()
+#line 4085 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7304,45 +7485,45 @@ void case_546()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_547()
-#line 3962 "cs-parser.jay"
+void case_564()
+#line 4095 "cs-parser.jay"
 {
 		yyVal = new CheckedExpr ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_548()
-#line 3967 "cs-parser.jay"
+void case_565()
+#line 4100 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new CheckedExpr (null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_549()
-#line 3976 "cs-parser.jay"
+void case_566()
+#line 4109 "cs-parser.jay"
 {
 		yyVal = new UnCheckedExpr ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_550()
-#line 3981 "cs-parser.jay"
+void case_567()
+#line 4114 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new UnCheckedExpr (null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_551()
-#line 3990 "cs-parser.jay"
+void case_568()
+#line 4123 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new MemberAccess (new Indirection ((Expression) yyVals[-3+yyTop], GetLocation (yyVals[-2+yyTop])), lt.Value, (TypeArguments) yyVals[0+yyTop], lt.Location);
 	  }
 
-void case_553()
-#line 4002 "cs-parser.jay"
+void case_570()
+#line 4135 "cs-parser.jay"
 {
 		yyVal = end_anonymous ((ParametersBlock) yyVals[0+yyTop]);
 		if ((ParametersCompiled) yyVals[-2+yyTop] != ParametersCompiled.Undefined) {
@@ -7352,8 +7533,8 @@ void case_553()
 		}
 	  }
 
-void case_555()
-#line 4015 "cs-parser.jay"
+void case_572()
+#line 4148 "cs-parser.jay"
 {
 		yyVal = end_anonymous ((ParametersBlock) yyVals[0+yyTop]);
 		
@@ -7364,8 +7545,8 @@ void case_555()
 		}
 	  }
 
-void case_559()
-#line 4040 "cs-parser.jay"
+void case_576()
+#line 4173 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 	  	yyVal = yyVals[-1+yyTop];
@@ -7373,8 +7554,8 @@ void case_559()
 	  	PushLocation (GetLocation (yyVals[-3+yyTop]));
 	  }
 
-void case_560()
-#line 4050 "cs-parser.jay"
+void case_577()
+#line 4183 "cs-parser.jay"
 {
 		if (lang_version < LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[-3+yyTop]), "default value expression");
@@ -7383,15 +7564,15 @@ void case_560()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_564()
-#line 4070 "cs-parser.jay"
+void case_581()
+#line 4203 "cs-parser.jay"
 {
 		yyVal = new Cast ((FullNamedExpression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_565()
-#line 4075 "cs-parser.jay"
+void case_582()
+#line 4208 "cs-parser.jay"
 {
 		if (!async_block) {
 			 if (current_anonymous_method is LambdaExpression) {
@@ -7414,24 +7595,24 @@ void case_565()
 		yyVal = new Await ((Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_566()
-#line 4097 "cs-parser.jay"
+void case_583()
+#line 4230 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new Unary (Unary.Operator.LogicalNot, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_567()
-#line 4103 "cs-parser.jay"
+void case_584()
+#line 4236 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new Unary (Unary.Operator.OnesComplement, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_568()
-#line 4109 "cs-parser.jay"
+void case_585()
+#line 4242 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7439,85 +7620,85 @@ void case_568()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_569()
-#line 4116 "cs-parser.jay"
+void case_586()
+#line 4249 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new Await (null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_577()
-#line 4154 "cs-parser.jay"
+void case_594()
+#line 4287 "cs-parser.jay"
 { 
 		Error_SyntaxError (yyToken);
 
 	  	yyVal = new Unary (Unary.Operator.UnaryPlus, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_578()
-#line 4160 "cs-parser.jay"
+void case_595()
+#line 4293 "cs-parser.jay"
 { 
 		Error_SyntaxError (yyToken);
 
 		yyVal = new Unary (Unary.Operator.UnaryNegation, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_579()
-#line 4166 "cs-parser.jay"
+void case_596()
+#line 4299 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new UnaryMutator (UnaryMutator.Mode.PreIncrement, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_580()
-#line 4172 "cs-parser.jay"
+void case_597()
+#line 4305 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new UnaryMutator (UnaryMutator.Mode.PreDecrement, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_581()
-#line 4178 "cs-parser.jay"
+void case_598()
+#line 4311 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new Indirection (null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_582()
-#line 4184 "cs-parser.jay"
+void case_599()
+#line 4317 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new Unary (Unary.Operator.AddressOf, null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_584()
-#line 4194 "cs-parser.jay"
+void case_601()
+#line 4327 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.Multiply, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_585()
-#line 4199 "cs-parser.jay"
+void case_602()
+#line 4332 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.Division, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_586()
-#line 4204 "cs-parser.jay"
+void case_603()
+#line 4337 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.Modulus, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_587()
-#line 4209 "cs-parser.jay"
+void case_604()
+#line 4342 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7525,8 +7706,8 @@ void case_587()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_588()
-#line 4216 "cs-parser.jay"
+void case_605()
+#line 4349 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7534,8 +7715,8 @@ void case_588()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_589()
-#line 4223 "cs-parser.jay"
+void case_606()
+#line 4356 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7543,22 +7724,22 @@ void case_589()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_591()
-#line 4234 "cs-parser.jay"
+void case_608()
+#line 4367 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.Addition, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_592()
-#line 4239 "cs-parser.jay"
+void case_609()
+#line 4372 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.Subtraction, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_595()
-#line 4252 "cs-parser.jay"
+void case_610()
+#line 4377 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7566,8 +7747,8 @@ void case_595()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_596()
-#line 4259 "cs-parser.jay"
+void case_611()
+#line 4384 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7575,52 +7756,108 @@ void case_596()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_597()
-#line 4266 "cs-parser.jay"
+void case_613()
+#line 4395 "cs-parser.jay"
+{
+		var is_expr = new Is ((Expression) yyVals[-3+yyTop], (Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
+		if (yyVals[0+yyTop] != null) {
+			if (lang_version != LanguageVersion.Experimental)
+				FeatureIsNotAvailable (GetLocation (yyVals[0+yyTop]), "type pattern matching");
+
+			var lt = (LocatedToken) yyVals[0+yyTop];
+			is_expr.Variable = new LocalVariable (current_block, lt.Value, lt.Location);
+			current_block.AddLocalName (is_expr.Variable);
+		}
+
+		yyVal = is_expr;
+	  }
+
+void case_614()
+#line 4409 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new As ((Expression) yyVals[-2+yyTop], null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_598()
-#line 4272 "cs-parser.jay"
+void case_615()
+#line 4415 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new Is ((Expression) yyVals[-2+yyTop], null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_599()
-#line 4278 "cs-parser.jay"
+void case_616()
+#line 4421 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		yyVal = new Is (new SimpleName (lt.Value, lt.Location), (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_600()
-#line 4283 "cs-parser.jay"
+void case_617()
+#line 4426 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		yyVal = new As (new SimpleName (lt.Value, lt.Location), (Expression) yyVals[0+yyTop], GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_602()
-#line 4292 "cs-parser.jay"
+void case_619()
+#line 4435 "cs-parser.jay"
+{
+		if (yyVals[-1+yyTop] is VarExpr)
+			yyVals[-1+yyTop] = new SimpleName ("var", ((VarExpr) yyVals[-1+yyTop]).Location);
+
+		yyVal = new ComposedCast ((FullNamedExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
+	  }
+
+void case_623()
+#line 4454 "cs-parser.jay"
+{
+		Expression expr = (Expression) yyVals[-1+yyTop];
+		if (yyVals[0+yyTop] == null) {
+			SimpleName sn = expr as SimpleName;
+			if (sn != null && sn.Name == "var")
+				yyVal = new VarExpr (sn.Location);
+			else
+				yyVal = yyVals[-1+yyTop];
+		} else if (expr is ATypeNameExpression) {
+			yyVal = new ComposedCast ((ATypeNameExpression)expr, (ComposedTypeSpecifier) yyVals[0+yyTop]);
+		} else {
+			Error_ExpectingTypeName (expr);
+			yyVal = null;
+		}
+	  }
+
+void case_624()
+#line 4470 "cs-parser.jay"
+{
+		ATypeNameExpression expr = yyVals[-1+yyTop] as ATypeNameExpression;
+
+		if (expr != null) {
+			yyVal = new ComposedCast (expr, (ComposedTypeSpecifier) yyVals[0+yyTop]);
+		} else {
+			Error_ExpectingTypeName ((Expression)yyVals[-1+yyTop]);
+			yyVal = expr;
+		}
+	  }
+
+void case_628()
+#line 4487 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.LeftShift, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_603()
-#line 4297 "cs-parser.jay"
+void case_629()
+#line 4492 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.RightShift, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_604()
-#line 4302 "cs-parser.jay"
+void case_630()
+#line 4497 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7628,8 +7865,8 @@ void case_604()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_605()
-#line 4309 "cs-parser.jay"
+void case_631()
+#line 4504 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7637,36 +7874,36 @@ void case_605()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_607()
-#line 4320 "cs-parser.jay"
+void case_633()
+#line 4515 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.LessThan, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_608()
-#line 4325 "cs-parser.jay"
+void case_634()
+#line 4520 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.GreaterThan, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_609()
-#line 4330 "cs-parser.jay"
+void case_635()
+#line 4525 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.LessThanOrEqual, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_610()
-#line 4335 "cs-parser.jay"
+void case_636()
+#line 4530 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.GreaterThanOrEqual, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_611()
-#line 4340 "cs-parser.jay"
+void case_637()
+#line 4535 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7674,8 +7911,8 @@ void case_611()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_612()
-#line 4347 "cs-parser.jay"
+void case_638()
+#line 4542 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7683,8 +7920,8 @@ void case_612()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_613()
-#line 4354 "cs-parser.jay"
+void case_639()
+#line 4549 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7692,8 +7929,8 @@ void case_613()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_614()
-#line 4361 "cs-parser.jay"
+void case_640()
+#line 4556 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7701,22 +7938,22 @@ void case_614()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_616()
-#line 4372 "cs-parser.jay"
+void case_642()
+#line 4567 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.Equality, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_617()
-#line 4377 "cs-parser.jay"
+void case_643()
+#line 4572 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.Inequality, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_618()
-#line 4382 "cs-parser.jay"
+void case_644()
+#line 4577 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7724,8 +7961,8 @@ void case_618()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_619()
-#line 4389 "cs-parser.jay"
+void case_645()
+#line 4584 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7733,15 +7970,15 @@ void case_619()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_621()
-#line 4400 "cs-parser.jay"
+void case_647()
+#line 4595 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.BitwiseAnd, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_622()
-#line 4405 "cs-parser.jay"
+void case_648()
+#line 4600 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7749,15 +7986,15 @@ void case_622()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_624()
-#line 4416 "cs-parser.jay"
+void case_650()
+#line 4611 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.ExclusiveOr, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_625()
-#line 4421 "cs-parser.jay"
+void case_651()
+#line 4616 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7765,15 +8002,15 @@ void case_625()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_627()
-#line 4432 "cs-parser.jay"
+void case_653()
+#line 4627 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.BitwiseOr, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_628()
-#line 4437 "cs-parser.jay"
+void case_654()
+#line 4632 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7781,15 +8018,15 @@ void case_628()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_630()
-#line 4448 "cs-parser.jay"
+void case_656()
+#line 4643 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.LogicalAnd, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_631()
-#line 4453 "cs-parser.jay"
+void case_657()
+#line 4648 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7797,15 +8034,15 @@ void case_631()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_633()
-#line 4464 "cs-parser.jay"
+void case_659()
+#line 4659 "cs-parser.jay"
 {
 		yyVal = new Binary (Binary.Operator.LogicalOr, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_634()
-#line 4469 "cs-parser.jay"
+void case_660()
+#line 4664 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7813,8 +8050,8 @@ void case_634()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_636()
-#line 4480 "cs-parser.jay"
+void case_662()
+#line 4675 "cs-parser.jay"
 {
 		if (lang_version < LanguageVersion.ISO_2)
 			FeatureIsNotAvailable (GetLocation (yyVals[-1+yyTop]), "null coalescing operator");
@@ -7823,23 +8060,23 @@ void case_636()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_638()
-#line 4492 "cs-parser.jay"
+void case_664()
+#line 4687 "cs-parser.jay"
 {
 		yyVal = new Conditional (new BooleanExpression ((Expression) yyVals[-4+yyTop]), (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_639()
-#line 4497 "cs-parser.jay"
+void case_665()
+#line 4692 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		yyVal = new Conditional (new BooleanExpression ((Expression) yyVals[-3+yyTop]), (Expression) yyVals[-1+yyTop], null, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_640()
-#line 4503 "cs-parser.jay"
+void case_666()
+#line 4698 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -7847,8 +8084,8 @@ void case_640()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_641()
-#line 4510 "cs-parser.jay"
+void case_667()
+#line 4705 "cs-parser.jay"
 {
 		Error_SyntaxError (Token.CLOSE_BRACE);
 
@@ -7857,85 +8094,85 @@ void case_641()
 		lexer.putback ('}');
 	  }
 
-void case_642()
-#line 4521 "cs-parser.jay"
+void case_668()
+#line 4716 "cs-parser.jay"
 {
 		yyVal = new SimpleAssign ((Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_643()
-#line 4526 "cs-parser.jay"
+void case_669()
+#line 4721 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.Multiply, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_644()
-#line 4531 "cs-parser.jay"
+void case_670()
+#line 4726 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.Division, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_645()
-#line 4536 "cs-parser.jay"
+void case_671()
+#line 4731 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.Modulus, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_646()
-#line 4541 "cs-parser.jay"
+void case_672()
+#line 4736 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.Addition, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_647()
-#line 4546 "cs-parser.jay"
+void case_673()
+#line 4741 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.Subtraction, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_648()
-#line 4551 "cs-parser.jay"
+void case_674()
+#line 4746 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.LeftShift, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_649()
-#line 4556 "cs-parser.jay"
+void case_675()
+#line 4751 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.RightShift, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_650()
-#line 4561 "cs-parser.jay"
+void case_676()
+#line 4756 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.BitwiseAnd, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_651()
-#line 4566 "cs-parser.jay"
+void case_677()
+#line 4761 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.BitwiseOr, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_652()
-#line 4571 "cs-parser.jay"
+void case_678()
+#line 4766 "cs-parser.jay"
 {
 		yyVal = new CompoundAssign (Binary.Operator.ExclusiveOr, (Expression) yyVals[-2+yyTop], (Expression) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_653()
-#line 4579 "cs-parser.jay"
+void case_679()
+#line 4774 "cs-parser.jay"
 {
 		var pars = new List<Parameter> (4);
 		pars.Add ((Parameter) yyVals[0+yyTop]);
@@ -7943,8 +8180,8 @@ void case_653()
 		yyVal = pars;
 	  }
 
-void case_654()
-#line 4586 "cs-parser.jay"
+void case_680()
+#line 4781 "cs-parser.jay"
 {
 		var pars = (List<Parameter>) yyVals[-2+yyTop];
 		Parameter p = (Parameter)yyVals[0+yyTop];
@@ -7958,46 +8195,46 @@ void case_654()
 		yyVal = pars;
 	  }
 
-void case_655()
-#line 4602 "cs-parser.jay"
+void case_681()
+#line 4797 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 
 		yyVal = new Parameter ((FullNamedExpression) yyVals[-1+yyTop], lt.Value, (Parameter.Modifier) yyVals[-2+yyTop], null, lt.Location);
 	  }
 
-void case_656()
-#line 4608 "cs-parser.jay"
+void case_682()
+#line 4803 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 
 		yyVal = new Parameter ((FullNamedExpression) yyVals[-1+yyTop], lt.Value, Parameter.Modifier.NONE, null, lt.Location);
 	  }
 
-void case_657()
-#line 4614 "cs-parser.jay"
+void case_683()
+#line 4809 "cs-parser.jay"
 {
 	  	var lt = (LocatedToken) yyVals[0+yyTop];
 		yyVal = new ImplicitLambdaParameter (lt.Value, lt.Location);
 	  }
 
-void case_658()
-#line 4619 "cs-parser.jay"
+void case_684()
+#line 4814 "cs-parser.jay"
 {
 	  	var lt = (LocatedToken) Error_AwaitAsIdentifier (yyVals[0+yyTop]);
 		yyVal = new ImplicitLambdaParameter (lt.Value, lt.Location);
 	  }
 
-void case_660()
-#line 4627 "cs-parser.jay"
+void case_686()
+#line 4822 "cs-parser.jay"
 { 
 		var pars_list = (List<Parameter>) yyVals[0+yyTop];
 		yyVal = new ParametersCompiled (pars_list.ToArray ());
 		lbag.AddLocation (yyVal, parameterListCommas);
 	  }
 
-void case_662()
-#line 4639 "cs-parser.jay"
+void case_688()
+#line 4834 "cs-parser.jay"
 {
 		Block b = end_block (Location.Null);
 		b.IsCompilerGenerated = true;
@@ -8005,8 +8242,8 @@ void case_662()
 		yyVal = b;
 	  }
 
-void case_664()
-#line 4647 "cs-parser.jay"
+void case_690()
+#line 4842 "cs-parser.jay"
 {
 	  	/* Handles only cases like foo = x.FirstOrDefault (l => );*/
 	  	/* where we must restore current_variable*/
@@ -8017,128 +8254,138 @@ void case_664()
 		yyVal = null;
 	  }
 
-void case_666()
-#line 4661 "cs-parser.jay"
+void case_692()
+#line 4856 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = null;
 	  }
 
-void case_667()
-#line 4669 "cs-parser.jay"
+void case_693()
+#line 4864 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];	
 		Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
 		start_anonymous (true, new ParametersCompiled (p), false, lt.Location);
 	  }
 
-void case_668()
-#line 4675 "cs-parser.jay"
+void case_694()
+#line 4870 "cs-parser.jay"
 {
 		yyVal = end_anonymous ((ParametersBlock) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_669()
-#line 4680 "cs-parser.jay"
+void case_695()
+#line 4875 "cs-parser.jay"
 {
 		var lt = (LocatedToken) Error_AwaitAsIdentifier (yyVals[-1+yyTop]);
 		Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
 		start_anonymous (true, new ParametersCompiled (p), false, lt.Location);
 	  }
 
-void case_670()
-#line 4686 "cs-parser.jay"
+void case_696()
+#line 4881 "cs-parser.jay"
 {
 		yyVal = end_anonymous ((ParametersBlock) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_671()
-#line 4691 "cs-parser.jay"
+void case_697()
+#line 4886 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
 		start_anonymous (true, new ParametersCompiled (p), true, lt.Location);
 	  }
 
-void case_672()
-#line 4697 "cs-parser.jay"
+void case_698()
+#line 4892 "cs-parser.jay"
 {
 		yyVal = end_anonymous ((ParametersBlock) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_674()
-#line 4706 "cs-parser.jay"
+void case_700()
+#line 4901 "cs-parser.jay"
 {
 	  	valid_param_mod = 0;
 		start_anonymous (true, (ParametersCompiled) yyVals[-2+yyTop], false, GetLocation (yyVals[-4+yyTop]));
 	  }
 
-void case_675()
-#line 4711 "cs-parser.jay"
+void case_701()
+#line 4906 "cs-parser.jay"
 {
 		yyVal = end_anonymous ((ParametersBlock) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-6+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_677()
-#line 4720 "cs-parser.jay"
+void case_703()
+#line 4915 "cs-parser.jay"
 {
 	  	valid_param_mod = 0;
 		start_anonymous (true, (ParametersCompiled) yyVals[-2+yyTop], true, GetLocation (yyVals[-5+yyTop]));
 	  }
 
-void case_678()
-#line 4725 "cs-parser.jay"
+void case_704()
+#line 4920 "cs-parser.jay"
 {
 		yyVal = end_anonymous ((ParametersBlock) yyVals[0+yyTop]);
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-7+yyTop]), GetLocation (yyVals[-6+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_685()
-#line 4748 "cs-parser.jay"
+void case_711()
+#line 4943 "cs-parser.jay"
 {
 		yyVal = new RefValueExpr ((Expression) yyVals[-3+yyTop], (FullNamedExpression) yyVals[-1+yyTop], GetLocation (yyVals[-5+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_686()
-#line 4753 "cs-parser.jay"
+void case_712()
+#line 4948 "cs-parser.jay"
 {
 		yyVal = new RefTypeExpr ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_687()
-#line 4758 "cs-parser.jay"
+void case_713()
+#line 4953 "cs-parser.jay"
 {
 		yyVal = new MakeRefExpr ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));	  
 	  }
 
-void case_692()
-#line 4785 "cs-parser.jay"
+void case_718()
+#line 4980 "cs-parser.jay"
 {
 		yyVal = yyVals[-1+yyTop];
 
 		/* Cannot use opt_formal_parameter_list because it can be shared instance for empty parameters*/
 	  	lbag.AppendToMember (current_container, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
+
+		if (lang_version < LanguageVersion.V_6)
+			FeatureIsNotAvailable (GetLocation (yyVals[-2+yyTop]), "primary constructor");
 	  }
 
-void case_697()
-#line 4811 "cs-parser.jay"
+void case_723()
+#line 5009 "cs-parser.jay"
 {
-		lbag.AppendToMember (current_container, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
-		((Class)current_type).PrimaryConstructorBaseArguments = (Arguments) yyVals[-1+yyTop];
+		++lexer.parsing_block;
+		current_type.PrimaryConstructorBaseArgumentsStart = GetLocation (yyVals[0+yyTop]);
+	  }
+
+void case_724()
+#line 5014 "cs-parser.jay"
+{
+		lbag.AppendToMember (current_container, GetLocation (yyVals[0+yyTop]));
+		current_type.PrimaryConstructorBaseArguments = (Arguments) yyVals[-1+yyTop];
 		--lexer.parsing_block;
 
 		yyVal = yyVals[-5+yyTop];
 	  }
 
-void case_699()
-#line 4831 "cs-parser.jay"
+void case_726()
+#line 5034 "cs-parser.jay"
 {
 		lexer.ConstraintsParsing = true;
 
@@ -8152,8 +8399,8 @@ void case_699()
 		valid_param_mod = ParameterModifierType.PrimaryConstructor;
 	  }
 
-void case_700()
-#line 4845 "cs-parser.jay"
+void case_727()
+#line 5048 "cs-parser.jay"
 {
 		valid_param_mod = 0;
 		lexer.ConstraintsParsing = false;
@@ -8172,16 +8419,16 @@ void case_700()
 		lexer.parsing_modifiers = true;
 	  }
 
-void case_701()
-#line 4863 "cs-parser.jay"
+void case_728()
+#line 5066 "cs-parser.jay"
 {
 		--lexer.parsing_declaration;
 		if (doc_support)
 			Lexer.doc_state = XmlCommentState.Allowed;
 	  }
 
-void case_702()
-#line 4869 "cs-parser.jay"
+void case_729()
+#line 5072 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] == null) {
 			lbag.AppendToMember (current_container, GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-2+yyTop]));
@@ -8191,16 +8438,16 @@ void case_702()
 		yyVal = pop_current_class ();
 	  }
 
-void case_705()
-#line 4888 "cs-parser.jay"
+void case_732()
+#line 5091 "cs-parser.jay"
 {
 	    mod_locations = null;
 		yyVal = ModifierNone;
 		lexer.parsing_modifiers = false;
 	  }
 
-void case_708()
-#line 4902 "cs-parser.jay"
+void case_735()
+#line 5105 "cs-parser.jay"
 { 
 		var m1 = (Modifiers) yyVals[-1+yyTop];
 		var m2 = (Modifiers) yyVals[0+yyTop];
@@ -8217,8 +8464,8 @@ void case_708()
 		yyVal = m1 | m2;
 	  }
 
-void case_709()
-#line 4921 "cs-parser.jay"
+void case_736()
+#line 5124 "cs-parser.jay"
 {
 		yyVal = Modifiers.NEW;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
@@ -8227,92 +8474,92 @@ void case_709()
 			report.Error (1530, GetLocation (yyVals[0+yyTop]), "Keyword `new' is not allowed on namespace elements");
 	  }
 
-void case_710()
-#line 4929 "cs-parser.jay"
+void case_737()
+#line 5132 "cs-parser.jay"
 {
 		yyVal = Modifiers.PUBLIC;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_711()
-#line 4934 "cs-parser.jay"
+void case_738()
+#line 5137 "cs-parser.jay"
 {
 		yyVal = Modifiers.PROTECTED;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_712()
-#line 4939 "cs-parser.jay"
+void case_739()
+#line 5142 "cs-parser.jay"
 {
 		yyVal = Modifiers.INTERNAL;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_713()
-#line 4944 "cs-parser.jay"
+void case_740()
+#line 5147 "cs-parser.jay"
 {
 		yyVal = Modifiers.PRIVATE;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_714()
-#line 4949 "cs-parser.jay"
+void case_741()
+#line 5152 "cs-parser.jay"
 {
 		yyVal = Modifiers.ABSTRACT;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_715()
-#line 4954 "cs-parser.jay"
+void case_742()
+#line 5157 "cs-parser.jay"
 {
 		yyVal = Modifiers.SEALED;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_716()
-#line 4959 "cs-parser.jay"
+void case_743()
+#line 5162 "cs-parser.jay"
 {
 		yyVal = Modifiers.STATIC;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_717()
-#line 4964 "cs-parser.jay"
+void case_744()
+#line 5167 "cs-parser.jay"
 {
 		yyVal = Modifiers.READONLY;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_718()
-#line 4969 "cs-parser.jay"
+void case_745()
+#line 5172 "cs-parser.jay"
 {
 		yyVal = Modifiers.VIRTUAL;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_719()
-#line 4974 "cs-parser.jay"
+void case_746()
+#line 5177 "cs-parser.jay"
 {
 		yyVal = Modifiers.OVERRIDE;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_720()
-#line 4979 "cs-parser.jay"
+void case_747()
+#line 5182 "cs-parser.jay"
 {
 		yyVal = Modifiers.EXTERN;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_721()
-#line 4984 "cs-parser.jay"
+void case_748()
+#line 5187 "cs-parser.jay"
 {
 		yyVal = Modifiers.VOLATILE;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_722()
-#line 4989 "cs-parser.jay"
+void case_749()
+#line 5192 "cs-parser.jay"
 {
 		yyVal = Modifiers.UNSAFE;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
@@ -8320,38 +8567,38 @@ void case_722()
 			Error_UnsafeCodeNotAllowed (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_723()
-#line 4996 "cs-parser.jay"
+void case_750()
+#line 5199 "cs-parser.jay"
 {
 		yyVal = Modifiers.ASYNC;
 		StoreModifierLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_726()
-#line 5009 "cs-parser.jay"
+void case_753()
+#line 5212 "cs-parser.jay"
 {
 		current_type.SetBaseTypes ((List<FullNamedExpression>) yyVals[0+yyTop]);
 		lbag.AppendToMember (current_type, GetLocation (yyVals[-1+yyTop]));
 	 }
 
-void case_727()
-#line 5014 "cs-parser.jay"
+void case_754()
+#line 5217 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
 		current_type.SetBaseTypes ((List<FullNamedExpression>) yyVals[-1+yyTop]);
 	  }
 
-void case_730()
-#line 5031 "cs-parser.jay"
+void case_757()
+#line 5234 "cs-parser.jay"
 {
 		var constraints = new List<Constraints> (1);
 		constraints.Add ((Constraints) yyVals[0+yyTop]);
 		yyVal = constraints;
 	  }
 
-void case_731()
-#line 5037 "cs-parser.jay"
+void case_758()
+#line 5240 "cs-parser.jay"
 {
 		var constraints = (List<Constraints>) yyVals[-1+yyTop];
 		Constraints new_constraint = (Constraints)yyVals[0+yyTop];
@@ -8368,16 +8615,16 @@ void case_731()
 		yyVal = constraints;
 	  }
 
-void case_732()
-#line 5056 "cs-parser.jay"
+void case_759()
+#line 5259 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		yyVal = new Constraints (new SimpleMemberName (lt.Value, lt.Location), (List<FullNamedExpression>) yyVals[0+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_733()
-#line 5062 "cs-parser.jay"
+void case_760()
+#line 5265 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 	  
@@ -8385,16 +8632,16 @@ void case_733()
 		yyVal = new Constraints (new SimpleMemberName (lt.Value, lt.Location), null, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_734()
-#line 5072 "cs-parser.jay"
+void case_761()
+#line 5275 "cs-parser.jay"
 {
 		var constraints = new List<FullNamedExpression> (1);
 		constraints.Add ((FullNamedExpression) yyVals[0+yyTop]);
 		yyVal = constraints;
 	  }
 
-void case_735()
-#line 5078 "cs-parser.jay"
+void case_762()
+#line 5281 "cs-parser.jay"
 {
 		var constraints = (List<FullNamedExpression>) yyVals[-2+yyTop];
 		var prev = constraints [constraints.Count - 1] as SpecialContraintExpr;
@@ -8419,8 +8666,8 @@ void case_735()
 		yyVal = constraints;
 	  }
 
-void case_736()
-#line 5105 "cs-parser.jay"
+void case_763()
+#line 5308 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] is ComposedCast)
 			report.Error (706, GetLocation (yyVals[0+yyTop]), "Invalid constraint type `{0}'", ((ComposedCast)yyVals[0+yyTop]).GetSignatureForError ());
@@ -8428,15 +8675,15 @@ void case_736()
 	  	yyVal = yyVals[0+yyTop];
 	  }
 
-void case_737()
-#line 5112 "cs-parser.jay"
+void case_764()
+#line 5315 "cs-parser.jay"
 {
 		yyVal = new SpecialContraintExpr (SpecialConstraint.Constructor, GetLocation (yyVals[-2+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-1+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_741()
-#line 5132 "cs-parser.jay"
+void case_768()
+#line 5335 "cs-parser.jay"
 {
 		if (lang_version <= LanguageVersion.V_3)
 			FeatureIsNotAvailable (lexer.Location, "generic type variance");
@@ -8444,79 +8691,79 @@ void case_741()
 		yyVal = yyVals[0+yyTop];
 	  }
 
-void case_742()
-#line 5142 "cs-parser.jay"
+void case_769()
+#line 5345 "cs-parser.jay"
 {
 		yyVal = new VarianceDecl (Variance.Covariant, GetLocation (yyVals[0+yyTop]));
 		savedLocation = GetLocation (yyVals[0+yyTop]);
 	  }
 
-void case_743()
-#line 5147 "cs-parser.jay"
+void case_770()
+#line 5350 "cs-parser.jay"
 {
 		yyVal = new VarianceDecl (Variance.Contravariant, GetLocation (yyVals[0+yyTop]));
 		savedLocation = GetLocation (yyVals[0+yyTop]);
 	  }
 
-void case_744()
-#line 5168 "cs-parser.jay"
+void case_771()
+#line 5371 "cs-parser.jay"
 {
 		++lexer.parsing_block;
 		start_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_746()
-#line 5180 "cs-parser.jay"
+void case_773()
+#line 5383 "cs-parser.jay"
 {
 	 	--lexer.parsing_block;
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_747()
-#line 5185 "cs-parser.jay"
+void case_774()
+#line 5388 "cs-parser.jay"
 {
 	 	--lexer.parsing_block;
 		yyVal = end_block (lexer.Location);
 	  }
 
-void case_748()
-#line 5194 "cs-parser.jay"
+void case_775()
+#line 5397 "cs-parser.jay"
 {
 		++lexer.parsing_block;
 		current_block.StartLocation = GetLocation (yyVals[0+yyTop]);
 	  }
 
-void case_749()
-#line 5199 "cs-parser.jay"
+void case_776()
+#line 5402 "cs-parser.jay"
 {
 		--lexer.parsing_block;
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_750()
-#line 5203 "cs-parser.jay"
+void case_777()
+#line 5406 "cs-parser.jay"
 {
 		report.Error (1525, GetLocation (yyVals[0+yyTop]), "Unexpected symbol '}', expected '{'");
 		lexer.putback ('}');
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_751()
-#line 5212 "cs-parser.jay"
+void case_778()
+#line 5415 "cs-parser.jay"
 {
 		++lexer.parsing_block;
 		current_block.StartLocation = GetLocation (yyVals[0+yyTop]);
 	  }
 
-void case_752()
-#line 5217 "cs-parser.jay"
+void case_779()
+#line 5420 "cs-parser.jay"
 {
 		--lexer.parsing_block;
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_760()
-#line 5245 "cs-parser.jay"
+void case_787()
+#line 5448 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		var lt =(LocatedToken) yyVals[-1+yyTop];
@@ -8525,43 +8772,43 @@ void case_760()
 		yyVal = null;
 	}
 
-void case_761()
-#line 5254 "cs-parser.jay"
+void case_788()
+#line 5457 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = null;
 	  }
 
-void case_794()
-#line 5318 "cs-parser.jay"
+void case_821()
+#line 5521 "cs-parser.jay"
 {
 		  report.Error (1023, GetLocation (yyVals[0+yyTop]), "An embedded statement may not be a declaration or labeled statement");
 		  yyVal = null;
 	  }
 
-void case_795()
-#line 5323 "cs-parser.jay"
+void case_822()
+#line 5526 "cs-parser.jay"
 {
 		  report.Error (1023, GetLocation (yyVals[0+yyTop]), "An embedded statement may not be a declaration or labeled statement");
 		  yyVal = null;
 	  }
 
-void case_796()
-#line 5328 "cs-parser.jay"
+void case_823()
+#line 5531 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new EmptyStatement (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_797()
-#line 5336 "cs-parser.jay"
+void case_824()
+#line 5539 "cs-parser.jay"
 {
 		/* Uses lexer.Location because semicolon location is not kept in quick mode*/
 		yyVal = new EmptyStatement (lexer.Location);
 	  }
 
-void case_798()
-#line 5344 "cs-parser.jay"
+void case_825()
+#line 5547 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		LabeledStatement labeled = new LabeledStatement (lt.Value, current_block, lt.Location);
@@ -8570,8 +8817,8 @@ void case_798()
 		current_block.AddStatement (labeled);
 	  }
 
-void case_801()
-#line 5357 "cs-parser.jay"
+void case_828()
+#line 5560 "cs-parser.jay"
 {
 		if (yyVals[-1+yyTop] is VarExpr)
 			yyVals[-1+yyTop] = new SimpleName ("var", ((VarExpr) yyVals[-1+yyTop]).Location);
@@ -8579,8 +8826,8 @@ void case_801()
 		yyVal = new ComposedCast ((FullNamedExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
 	  }
 
-void case_802()
-#line 5373 "cs-parser.jay"
+void case_829()
+#line 5576 "cs-parser.jay"
 { 
 		/* Ok, the above "primary_expression" is there to get rid of*/
 		/* both reduce/reduce and shift/reduces in the grammar, it should*/
@@ -8611,8 +8858,8 @@ void case_802()
 		}
 	  }
 
-void case_803()
-#line 5403 "cs-parser.jay"
+void case_830()
+#line 5606 "cs-parser.jay"
 {
 		ATypeNameExpression expr = yyVals[-1+yyTop] as ATypeNameExpression;
 
@@ -8624,31 +8871,15 @@ void case_803()
 		}
 	  }
 
-void case_804()
-#line 5414 "cs-parser.jay"
-{
-		if (yyVals[0+yyTop] == null)
-			yyVal = yyVals[-1+yyTop];
-		else
-			yyVal = new ComposedCast ((FullNamedExpression) yyVals[-1+yyTop], (ComposedTypeSpecifier) yyVals[0+yyTop]);
-	  }
-
-void case_807()
-#line 5429 "cs-parser.jay"
-{
-		Expression.Error_VoidInvalidInTheContext (GetLocation (yyVals[0+yyTop]), report);
-		yyVal = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[0+yyTop]));
-	  }
-
-void case_809()
-#line 5438 "cs-parser.jay"
+void case_834()
+#line 5623 "cs-parser.jay"
 {
 	  	((ComposedTypeSpecifier) yyVals[-1+yyTop]).Next = (ComposedTypeSpecifier) yyVals[0+yyTop];
 	  	yyVal = yyVals[-1+yyTop];
 	  }
 
-void case_813()
-#line 5461 "cs-parser.jay"
+void case_838()
+#line 5646 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		var li = new LocalVariable (current_block, lt.Value, lt.Location);
@@ -8656,8 +8887,8 @@ void case_813()
 		current_variable = new BlockVariable ((FullNamedExpression) yyVals[-1+yyTop], li);
 	  }
 
-void case_814()
-#line 5468 "cs-parser.jay"
+void case_839()
+#line 5653 "cs-parser.jay"
 {
 		yyVal = current_variable;
 		current_variable = null;
@@ -8667,8 +8898,8 @@ void case_814()
 			lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_815()
-#line 5477 "cs-parser.jay"
+void case_840()
+#line 5662 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.Constant, lt.Location);
@@ -8676,8 +8907,8 @@ void case_815()
 		current_variable = new BlockConstant ((FullNamedExpression) yyVals[-1+yyTop], li);
 	  }
 
-void case_816()
-#line 5484 "cs-parser.jay"
+void case_841()
+#line 5669 "cs-parser.jay"
 {
 		if (current_variable.Initializer != null) {
 			lbag.AddLocation (current_variable, GetLocation (yyVals[-6+yyTop]), savedLocation, GetLocation (yyVals[0+yyTop]));
@@ -8688,8 +8919,8 @@ void case_816()
 		current_variable = null;
 	  }
 
-void case_818()
-#line 5497 "cs-parser.jay"
+void case_843()
+#line 5682 "cs-parser.jay"
 {
 		/* Redundant, but wont regress*/
 		report.Error (1525, lexer.Location, "Unexpected symbol }");
@@ -8697,16 +8928,16 @@ void case_818()
 		yyVal = yyVals[0+yyTop];
 	  }
 
-void case_820()
-#line 5508 "cs-parser.jay"
+void case_845()
+#line 5693 "cs-parser.jay"
 {
 		current_variable.Initializer = (Expression) yyVals[0+yyTop];
 		PushLocation (GetLocation (yyVals[-1+yyTop]));
 		yyVal = current_variable;
 	  }
 
-void case_821()
-#line 5514 "cs-parser.jay"
+void case_846()
+#line 5699 "cs-parser.jay"
 {
 	  	if (yyToken == Token.OPEN_BRACKET_EXPR) {
 			report.Error (650, lexer.Location,
@@ -8716,8 +8947,8 @@ void case_821()
 		}
 	  }
 
-void case_825()
-#line 5532 "cs-parser.jay"
+void case_850()
+#line 5717 "cs-parser.jay"
 {
 		foreach (var d in current_variable.Declarators) {
 			if (d.Initializer == null)
@@ -8725,8 +8956,8 @@ void case_825()
 		}
 	  }
 
-void case_828()
-#line 5547 "cs-parser.jay"
+void case_853()
+#line 5732 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];	  
 		var li = new LocalVariable (current_variable.Variable, lt.Value, lt.Location);
@@ -8736,8 +8967,8 @@ void case_828()
 	  	lbag.AddLocation (d, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_829()
-#line 5556 "cs-parser.jay"
+void case_854()
+#line 5741 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];	  
 		var li = new LocalVariable (current_variable.Variable, lt.Value, lt.Location);
@@ -8747,15 +8978,15 @@ void case_829()
 	  	lbag.AddLocation (d, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_831()
-#line 5572 "cs-parser.jay"
+void case_856()
+#line 5757 "cs-parser.jay"
 {
 		savedLocation = GetLocation (yyVals[-1+yyTop]);
 		current_variable.Initializer = (Expression) yyVals[0+yyTop];
 	  }
 
-void case_836()
-#line 5590 "cs-parser.jay"
+void case_861()
+#line 5775 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];	  
 		var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.Constant, lt.Location);
@@ -8765,37 +8996,37 @@ void case_836()
 	  	lbag.AddLocation (d, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_838()
-#line 5603 "cs-parser.jay"
+void case_863()
+#line 5788 "cs-parser.jay"
 {
 		yyVal = new StackAlloc ((Expression) yyVals[-3+yyTop], (Expression) yyVals[-1+yyTop], GetLocation (yyVals[-4+yyTop]));
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_839()
-#line 5608 "cs-parser.jay"
+void case_864()
+#line 5793 "cs-parser.jay"
 {
 		report.Error (1575, GetLocation (yyVals[-1+yyTop]), "A stackalloc expression requires [] after type");
 		yyVal = new StackAlloc ((Expression) yyVals[0+yyTop], null, GetLocation (yyVals[-1+yyTop]));		
 	  }
 
-void case_840()
-#line 5616 "cs-parser.jay"
+void case_865()
+#line 5801 "cs-parser.jay"
 {
 		yyVal = yyVals[-1+yyTop];
 		lbag.AddStatement (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_842()
-#line 5622 "cs-parser.jay"
+void case_867()
+#line 5807 "cs-parser.jay"
 {
 		yyVal = yyVals[-1+yyTop];
 		report.Error (1002, GetLocation (yyVals[0+yyTop]), "; expected");
 		lexer.putback ('}');
 	  }
 
-void case_845()
-#line 5640 "cs-parser.jay"
+void case_870()
+#line 5825 "cs-parser.jay"
 {
 		ExpressionStatement s = yyVals[0+yyTop] as ExpressionStatement;
 		if (s == null) {
@@ -8806,22 +9037,22 @@ void case_845()
 		}
 	  }
 
-void case_846()
-#line 5653 "cs-parser.jay"
+void case_871()
+#line 5838 "cs-parser.jay"
 {
 		Expression expr = (Expression) yyVals[0+yyTop];
 		yyVal = new StatementExpression (new OptionalAssign (expr, lexer.Location));
 	  }
 
-void case_847()
-#line 5658 "cs-parser.jay"
+void case_872()
+#line 5843 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new EmptyStatement (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_850()
-#line 5672 "cs-parser.jay"
+void case_875()
+#line 5857 "cs-parser.jay"
 { 
 		if (yyVals[0+yyTop] is EmptyStatement)
 			Warning_EmptyStatement (GetLocation (yyVals[0+yyTop]));
@@ -8830,8 +9061,8 @@ void case_850()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_851()
-#line 5681 "cs-parser.jay"
+void case_876()
+#line 5866 "cs-parser.jay"
 {
 		yyVal = new If ((BooleanExpression) yyVals[-4+yyTop], (Statement) yyVals[-2+yyTop], (Statement) yyVals[0+yyTop], GetLocation (yyVals[-6+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-5+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]));
@@ -8842,8 +9073,8 @@ void case_851()
 			Warning_EmptyStatement (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_852()
-#line 5691 "cs-parser.jay"
+void case_877()
+#line 5876 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		
@@ -8851,16 +9082,16 @@ void case_852()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_854()
-#line 5705 "cs-parser.jay"
+void case_879()
+#line 5890 "cs-parser.jay"
 {
 		yyVal = new Switch ((Expression) yyVals[-5+yyTop], (ExplicitBlock) current_block.Explicit, GetLocation (yyVals[-7+yyTop]));	
 		end_block (GetLocation (yyVals[0+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-6+yyTop]), GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_855()
-#line 5711 "cs-parser.jay"
+void case_880()
+#line 5896 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 	  
@@ -8868,30 +9099,30 @@ void case_855()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_862()
-#line 5742 "cs-parser.jay"
+void case_887()
+#line 5927 "cs-parser.jay"
 {
 	  	var label = (SwitchLabel) yyVals[0+yyTop];
 	  	label.SectionStart = true;
 		current_block.AddStatement (label);
 	  }
 
-void case_864()
-#line 5755 "cs-parser.jay"
+void case_889()
+#line 5940 "cs-parser.jay"
 {
 	 	yyVal = new SwitchLabel ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 	 	lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	 }
 
-void case_865()
-#line 5760 "cs-parser.jay"
+void case_890()
+#line 5945 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new SwitchLabel ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_871()
-#line 5779 "cs-parser.jay"
+void case_896()
+#line 5964 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
 			Warning_EmptyStatement (GetLocation (yyVals[0+yyTop]));
@@ -8900,8 +9131,8 @@ void case_871()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_872()
-#line 5787 "cs-parser.jay"
+void case_897()
+#line 5972 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		
@@ -8909,22 +9140,22 @@ void case_872()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_873()
-#line 5797 "cs-parser.jay"
+void case_898()
+#line 5982 "cs-parser.jay"
 {
 		yyVal = new Do ((Statement) yyVals[-5+yyTop], (BooleanExpression) yyVals[-2+yyTop], GetLocation (yyVals[-6+yyTop]), GetLocation (yyVals[-4+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-4+yyTop]), GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_874()
-#line 5802 "cs-parser.jay"
+void case_899()
+#line 5987 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new Do ((Statement) yyVals[-1+yyTop], null, GetLocation (yyVals[-2+yyTop]), Location.Null);
 	  }
 
-void case_875()
-#line 5807 "cs-parser.jay"
+void case_900()
+#line 5992 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 	  
@@ -8932,8 +9163,8 @@ void case_875()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_876()
-#line 5817 "cs-parser.jay"
+void case_901()
+#line 6002 "cs-parser.jay"
 {
 		start_block (GetLocation (yyVals[0+yyTop]));
 		current_block.IsCompilerGenerated = true;
@@ -8943,8 +9174,8 @@ void case_876()
 		yyVal = f;
 	  }
 
-void case_878()
-#line 5834 "cs-parser.jay"
+void case_903()
+#line 6019 "cs-parser.jay"
 {
 		For f =  (For) yyVals[-2+yyTop];
 		f.Initializer = (Statement) yyVals[-1+yyTop];
@@ -8952,8 +9183,8 @@ void case_878()
 		yyVal = f;
 	  }
 
-void case_880()
-#line 5844 "cs-parser.jay"
+void case_905()
+#line 6029 "cs-parser.jay"
 {
 		report.Error (1525, GetLocation (yyVals[0+yyTop]), "Unexpected symbol ')', expected ';'");
 		For f =  (For) yyVals[-2+yyTop];
@@ -8962,8 +9193,8 @@ void case_880()
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	}
 
-void case_881()
-#line 5855 "cs-parser.jay"
+void case_906()
+#line 6040 "cs-parser.jay"
 {
 		For f =  (For) yyVals[-2+yyTop];
 		f.Condition = (BooleanExpression) yyVals[-1+yyTop];
@@ -8971,8 +9202,8 @@ void case_881()
 		yyVal = f;
 	  }
 
-void case_883()
-#line 5866 "cs-parser.jay"
+void case_908()
+#line 6051 "cs-parser.jay"
 {
 		report.Error (1525, GetLocation (yyVals[0+yyTop]), "Unexpected symbol ')', expected ';'");
 		For f =  (For) yyVals[-2+yyTop];
@@ -8981,8 +9212,8 @@ void case_883()
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	}
 
-void case_884()
-#line 5878 "cs-parser.jay"
+void case_909()
+#line 6063 "cs-parser.jay"
 {
 		For f =  (For) yyVals[-3+yyTop];
 		f.Iterator = (Statement) yyVals[-2+yyTop];
@@ -8996,15 +9227,15 @@ void case_884()
 		yyVal = end_block (GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_885()
-#line 5891 "cs-parser.jay"
+void case_910()
+#line 6076 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = end_block (current_block.StartLocation);
 	  }
 
-void case_888()
-#line 5904 "cs-parser.jay"
+void case_913()
+#line 6089 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[0+yyTop];
 		var li = new LocalVariable (current_block, lt.Value, lt.Location);
@@ -9012,8 +9243,8 @@ void case_888()
 		current_variable = new BlockVariable ((FullNamedExpression) yyVals[-1+yyTop], li);
 	  }
 
-void case_889()
-#line 5911 "cs-parser.jay"
+void case_914()
+#line 6096 "cs-parser.jay"
 {
 		yyVal = current_variable;
 		if (yyVals[-1+yyTop] != null)
@@ -9022,8 +9253,8 @@ void case_889()
 		current_variable = null;
 	  }
 
-void case_897()
-#line 5938 "cs-parser.jay"
+void case_922()
+#line 6123 "cs-parser.jay"
 {
 	  	var sl = yyVals[-2+yyTop] as StatementList;
 	  	if (sl == null) {
@@ -9038,8 +9269,8 @@ void case_897()
 		yyVal = sl;
 	  }
 
-void case_898()
-#line 5955 "cs-parser.jay"
+void case_923()
+#line 6140 "cs-parser.jay"
 {
 		report.Error (230, GetLocation (yyVals[-3+yyTop]), "Type and identifier are both required in a foreach statement");
 
@@ -9053,8 +9284,8 @@ void case_898()
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_899()
-#line 5968 "cs-parser.jay"
+void case_924()
+#line 6153 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 	
@@ -9072,8 +9303,8 @@ void case_899()
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_900()
-#line 5985 "cs-parser.jay"
+void case_925()
+#line 6170 "cs-parser.jay"
 {
 		start_block (GetLocation (yyVals[-5+yyTop]));
 		current_block.IsCompilerGenerated = true;
@@ -9084,8 +9315,8 @@ void case_900()
 		yyVal = li;
 	  }
 
-void case_901()
-#line 5995 "cs-parser.jay"
+void case_926()
+#line 6180 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
 			Warning_EmptyStatement (GetLocation (yyVals[0+yyTop]));
@@ -9097,8 +9328,8 @@ void case_901()
 		yyVal = f;
 	  }
 
-void case_902()
-#line 6006 "cs-parser.jay"
+void case_927()
+#line 6191 "cs-parser.jay"
 {
 		start_block (GetLocation (yyVals[-3+yyTop]));
 		current_block.IsCompilerGenerated = true;
@@ -9112,8 +9343,8 @@ void case_902()
 		yyVal = end_block (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_903()
-#line 6019 "cs-parser.jay"
+void case_928()
+#line 6204 "cs-parser.jay"
 {
 		Foreach f = new Foreach ((Expression) yyVals[-1+yyTop], null, null, null, null, GetLocation (yyVals[-3+yyTop]));
 		current_block.AddStatement (f);
@@ -9122,93 +9353,93 @@ void case_903()
 		yyVal = f;
 	  }
 
-void case_910()
-#line 6039 "cs-parser.jay"
+void case_935()
+#line 6224 "cs-parser.jay"
 {
 		yyVal = new Break (GetLocation (yyVals[-1+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_911()
-#line 6047 "cs-parser.jay"
+void case_936()
+#line 6232 "cs-parser.jay"
 {
 		yyVal = new Continue (GetLocation (yyVals[-1+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_912()
-#line 6052 "cs-parser.jay"
+void case_937()
+#line 6237 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new Continue (GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_913()
-#line 6060 "cs-parser.jay"
+void case_938()
+#line 6245 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-1+yyTop];
 		yyVal = new Goto (lt.Value, GetLocation (yyVals[-2+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-1+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_914()
-#line 6066 "cs-parser.jay"
+void case_939()
+#line 6251 "cs-parser.jay"
 {
 		yyVal = new GotoCase ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_915()
-#line 6071 "cs-parser.jay"
+void case_940()
+#line 6256 "cs-parser.jay"
 {
 		yyVal = new GotoDefault (GetLocation (yyVals[-2+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-1+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_916()
-#line 6079 "cs-parser.jay"
+void case_941()
+#line 6264 "cs-parser.jay"
 {
 		yyVal = new Return ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_917()
-#line 6084 "cs-parser.jay"
+void case_942()
+#line 6269 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new Return ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_918()
-#line 6089 "cs-parser.jay"
+void case_943()
+#line 6274 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new Return (null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_919()
-#line 6097 "cs-parser.jay"
+void case_944()
+#line 6282 "cs-parser.jay"
 {
 		yyVal = new Throw ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_920()
-#line 6102 "cs-parser.jay"
+void case_945()
+#line 6287 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new Throw ((Expression) yyVals[-1+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_921()
-#line 6107 "cs-parser.jay"
+void case_946()
+#line 6292 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new Throw (null, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_922()
-#line 6115 "cs-parser.jay"
+void case_947()
+#line 6300 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-3+yyTop];
 		string s = lt.Value;
@@ -9225,8 +9456,8 @@ void case_922()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_923()
-#line 6131 "cs-parser.jay"
+void case_948()
+#line 6316 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -9245,8 +9476,8 @@ void case_923()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_924()
-#line 6149 "cs-parser.jay"
+void case_949()
+#line 6334 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-2+yyTop];
 		string s = lt.Value;
@@ -9261,29 +9492,29 @@ void case_924()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-1+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_928()
-#line 6175 "cs-parser.jay"
+void case_953()
+#line 6360 "cs-parser.jay"
 {
 		yyVal = new TryFinally ((Statement) yyVals[-2+yyTop], (ExplicitBlock) yyVals[0+yyTop], GetLocation (yyVals[-3+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_929()
-#line 6180 "cs-parser.jay"
+void case_954()
+#line 6365 "cs-parser.jay"
 {
 		yyVal = new TryFinally (new TryCatch ((Block) yyVals[-3+yyTop], (List<Catch>) yyVals[-2+yyTop], GetLocation (yyVals[-4+yyTop]), true), (ExplicitBlock) yyVals[0+yyTop], GetLocation (yyVals[-4+yyTop]));
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_930()
-#line 6185 "cs-parser.jay"
+void case_955()
+#line 6370 "cs-parser.jay"
 {
 		Error_SyntaxError (1524, yyToken);
 		yyVal = new TryCatch ((Block) yyVals[-1+yyTop], null, GetLocation (yyVals[-2+yyTop]), false);
 	  }
 
-void case_931()
-#line 6193 "cs-parser.jay"
+void case_956()
+#line 6378 "cs-parser.jay"
 {
 		var l = new List<Catch> (2);
 
@@ -9291,8 +9522,8 @@ void case_931()
 		yyVal = l;
 	  }
 
-void case_932()
-#line 6200 "cs-parser.jay"
+void case_957()
+#line 6385 "cs-parser.jay"
 {
 		var l = (List<Catch>) yyVals[-1+yyTop];
 		
@@ -9306,16 +9537,16 @@ void case_932()
 		yyVal = l;
 	  }
 
-void case_935()
-#line 6221 "cs-parser.jay"
+void case_960()
+#line 6406 "cs-parser.jay"
 {
 	  	var c = new Catch ((ExplicitBlock) yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]));
 	  	c.Filter = (CatchFilterExpression) yyVals[-1+yyTop];
 	  	yyVal = c;
 	  }
 
-void case_936()
-#line 6227 "cs-parser.jay"
+void case_961()
+#line 6412 "cs-parser.jay"
 {
 		start_block (GetLocation (yyVals[-3+yyTop]));
 		var c = new Catch ((ExplicitBlock) current_block, GetLocation (yyVals[-4+yyTop]));
@@ -9331,15 +9562,15 @@ void case_936()
 		yyVal = c;
 	  }
 
-void case_937()
-#line 6242 "cs-parser.jay"
+void case_962()
+#line 6427 "cs-parser.jay"
 {
 	  	((Catch) yyVals[-2+yyTop]).Filter = (CatchFilterExpression) yyVals[-1+yyTop];
 		yyVal = yyVals[-2+yyTop];
 	  }
 
-void case_938()
-#line 6247 "cs-parser.jay"
+void case_963()
+#line 6432 "cs-parser.jay"
 {
 	  	if (yyToken == Token.CLOSE_PARENS) {
 			report.Error (1015, lexer.Location,
@@ -9351,8 +9582,8 @@ void case_938()
 		yyVal = new Catch (null, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_939()
-#line 6258 "cs-parser.jay"
+void case_964()
+#line 6443 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -9376,8 +9607,8 @@ void case_939()
 		yyVal = c;
 	  }
 
-void case_941()
-#line 6285 "cs-parser.jay"
+void case_966()
+#line 6470 "cs-parser.jay"
 {
 		if (lang_version <= LanguageVersion.V_5)
 			FeatureIsNotAvailable (GetLocation (yyVals[-3+yyTop]), "exception filter");
@@ -9386,15 +9617,15 @@ void case_941()
 	  	lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]), GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_944()
-#line 6310 "cs-parser.jay"
+void case_969()
+#line 6495 "cs-parser.jay"
 {
 		if (!settings.Unsafe)
 			Error_UnsafeCodeNotAllowed (GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_946()
-#line 6320 "cs-parser.jay"
+void case_971()
+#line 6505 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
 			Warning_EmptyStatement (GetLocation (yyVals[0+yyTop]));
@@ -9403,8 +9634,8 @@ void case_946()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_947()
-#line 6328 "cs-parser.jay"
+void case_972()
+#line 6513 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 
@@ -9412,8 +9643,8 @@ void case_947()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_948()
-#line 6338 "cs-parser.jay"
+void case_973()
+#line 6523 "cs-parser.jay"
 {
 	    start_block (GetLocation (yyVals[-2+yyTop]));
 	    
@@ -9424,15 +9655,15 @@ void case_948()
 		current_variable = new Fixed.VariableDeclaration ((FullNamedExpression) yyVals[-1+yyTop], li);
 	  }
 
-void case_949()
-#line 6348 "cs-parser.jay"
+void case_974()
+#line 6533 "cs-parser.jay"
 {
 		yyVal = current_variable;
 		current_variable = null;
 	  }
 
-void case_950()
-#line 6353 "cs-parser.jay"
+void case_975()
+#line 6538 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
 			Warning_EmptyStatement (GetLocation (yyVals[0+yyTop]));
@@ -9443,8 +9674,8 @@ void case_950()
 		yyVal = end_block (GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_951()
-#line 6366 "cs-parser.jay"
+void case_976()
+#line 6551 "cs-parser.jay"
 {
 	    start_block (GetLocation (yyVals[-2+yyTop]));
 	    
@@ -9455,15 +9686,15 @@ void case_951()
 		current_variable = new Using.VariableDeclaration ((FullNamedExpression) yyVals[-1+yyTop], li);
 	  }
 
-void case_952()
-#line 6376 "cs-parser.jay"
+void case_977()
+#line 6561 "cs-parser.jay"
 {
 		yyVal = current_variable;	  
 		current_variable = null;
 	  }
 
-void case_953()
-#line 6381 "cs-parser.jay"
+void case_978()
+#line 6566 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
 			Warning_EmptyStatement (GetLocation (yyVals[0+yyTop]));
@@ -9474,8 +9705,8 @@ void case_953()
 		yyVal = end_block (GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_954()
-#line 6391 "cs-parser.jay"
+void case_979()
+#line 6576 "cs-parser.jay"
 {
 		if (yyVals[0+yyTop] is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
 			Warning_EmptyStatement (GetLocation (yyVals[0+yyTop]));
@@ -9484,8 +9715,8 @@ void case_954()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-3+yyTop]), GetLocation (yyVals[-1+yyTop]));
 	  }
 
-void case_955()
-#line 6399 "cs-parser.jay"
+void case_980()
+#line 6584 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		
@@ -9493,23 +9724,23 @@ void case_955()
 		lbag.AddStatement (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_957()
-#line 6410 "cs-parser.jay"
+void case_982()
+#line 6595 "cs-parser.jay"
 {
 		/* It has to be here for the parent to safely restore artificial block*/
 	  	Error_SyntaxError (yyToken);
 	  }
 
-void case_959()
-#line 6422 "cs-parser.jay"
+void case_984()
+#line 6607 "cs-parser.jay"
 {
 		current_variable.Initializer = (Expression) yyVals[0+yyTop];
 		lbag.AddLocation (current_variable, GetLocation (yyVals[-1+yyTop]));
 		yyVal = current_variable;
 	  }
 
-void case_960()
-#line 6434 "cs-parser.jay"
+void case_985()
+#line 6619 "cs-parser.jay"
 {
 		lexer.query_parsing = false;
 			
@@ -9522,8 +9753,8 @@ void case_960()
 		current_block = current_block.Parent;
 	  }
 
-void case_961()
-#line 6446 "cs-parser.jay"
+void case_986()
+#line 6631 "cs-parser.jay"
 {
 		Linq.AQueryClause from = yyVals[-1+yyTop] as Linq.AQueryClause;
 			
@@ -9534,8 +9765,8 @@ void case_961()
 		current_block = current_block.Parent;
 	  }
 
-void case_962()
-#line 6457 "cs-parser.jay"
+void case_987()
+#line 6642 "cs-parser.jay"
 {
 	        lexer.query_parsing = false;
 		yyVal = yyVals[-1+yyTop];
@@ -9544,16 +9775,16 @@ void case_962()
 		current_block = current_block.Parent;
 	  }
 
-void case_963()
-#line 6464 "cs-parser.jay"
+void case_988()
+#line 6649 "cs-parser.jay"
 {
 	        yyVal = yyVals[-1+yyTop];
 		current_block.SetEndLocation (lexer.Location);
 		current_block = current_block.Parent;
 	  }
 
-void case_964()
-#line 6473 "cs-parser.jay"
+void case_989()
+#line 6658 "cs-parser.jay"
 {
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  
@@ -9564,8 +9795,8 @@ void case_964()
 		yyVal = new Linq.QueryExpression (clause);
 	  }
 
-void case_965()
-#line 6483 "cs-parser.jay"
+void case_990()
+#line 6668 "cs-parser.jay"
 {
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  
@@ -9578,8 +9809,8 @@ void case_965()
 		yyVal = new Linq.QueryExpression (clause);
 	  }
 
-void case_966()
-#line 6498 "cs-parser.jay"
+void case_991()
+#line 6683 "cs-parser.jay"
 {
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  
@@ -9590,8 +9821,8 @@ void case_966()
 		yyVal = new Linq.QueryExpression (clause);
 	  }
 
-void case_967()
-#line 6508 "cs-parser.jay"
+void case_992()
+#line 6693 "cs-parser.jay"
 {
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  
@@ -9604,8 +9835,8 @@ void case_967()
 		yyVal = new Linq.QueryExpression (clause);
 	  }
 
-void case_969()
-#line 6527 "cs-parser.jay"
+void case_994()
+#line 6712 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-3+yyTop];
 		var sn = new Linq.RangeVariable (lt.Value, lt.Location);
@@ -9617,8 +9848,8 @@ void case_969()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_971()
-#line 6542 "cs-parser.jay"
+void case_996()
+#line 6727 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-3+yyTop];
 		var sn = new Linq.RangeVariable (lt.Value, lt.Location);
@@ -9635,8 +9866,8 @@ void case_971()
 		lbag.AddLocation (yyVal, GetLocation (yyVals[-2+yyTop]));
 	  }
 
-void case_972()
-#line 6561 "cs-parser.jay"
+void case_997()
+#line 6746 "cs-parser.jay"
 {
 	  	Linq.AQueryClause head = (Linq.AQueryClause)yyVals[-1+yyTop];
 		
@@ -9652,8 +9883,8 @@ void case_972()
 		yyVal = head;
 	  }
 
-void case_973()
-#line 6576 "cs-parser.jay"
+void case_998()
+#line 6761 "cs-parser.jay"
 {
 	  	Linq.AQueryClause head = (Linq.AQueryClause)yyVals[0+yyTop];
 
@@ -9666,22 +9897,22 @@ void case_973()
 		yyVal = head;
 	  }
 
-void case_975()
-#line 6589 "cs-parser.jay"
+void case_1000()
+#line 6774 "cs-parser.jay"
 {
 		report.Error (742, GetLocation (yyVals[0+yyTop]), "Unexpected symbol `{0}'. A query body must end with select or group clause", GetSymbolName (yyToken));
 		yyVal = yyVals[-1+yyTop];
 	  }
 
-void case_976()
-#line 6594 "cs-parser.jay"
+void case_1001()
+#line 6779 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = null;
 	  }
 
-void case_978()
-#line 6606 "cs-parser.jay"
+void case_1003()
+#line 6791 "cs-parser.jay"
 {
 		yyVal = new Linq.Select ((Linq.QueryBlock)current_block, (Expression)yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]));
 
@@ -9689,8 +9920,8 @@ void case_978()
 		current_block = current_block.Parent;
 	  }
 
-void case_979()
-#line 6613 "cs-parser.jay"
+void case_1004()
+#line 6798 "cs-parser.jay"
 {
 	  	if (linq_clause_blocks == null)
 	  		linq_clause_blocks = new Stack<Linq.QueryBlock> ();
@@ -9699,8 +9930,8 @@ void case_979()
 	  	linq_clause_blocks.Push ((Linq.QueryBlock)current_block);
 	  }
 
-void case_980()
-#line 6621 "cs-parser.jay"
+void case_1005()
+#line 6806 "cs-parser.jay"
 {
 		current_block.SetEndLocation (lexer.Location);
 		current_block = current_block.Parent;
@@ -9708,8 +9939,8 @@ void case_980()
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  }
 
-void case_981()
-#line 6628 "cs-parser.jay"
+void case_1006()
+#line 6813 "cs-parser.jay"
 {
 		var obj = (object[]) yyVals[0+yyTop];
 
@@ -9720,22 +9951,22 @@ void case_981()
 		current_block = current_block.Parent;
 	  }
 
-void case_983()
-#line 6645 "cs-parser.jay"
+void case_1008()
+#line 6830 "cs-parser.jay"
 {
 		Error_SyntaxError (yyToken);
 		yyVal = new object[2] { null, Location.Null };
 	  }
 
-void case_985()
-#line 6654 "cs-parser.jay"
+void case_1010()
+#line 6839 "cs-parser.jay"
 {
 		((Linq.AQueryClause)yyVals[-1+yyTop]).Tail.Next = (Linq.AQueryClause)yyVals[0+yyTop];
 		yyVal = yyVals[-1+yyTop];
 	  }
 
-void case_992()
-#line 6674 "cs-parser.jay"
+void case_1017()
+#line 6859 "cs-parser.jay"
 {
 		var lt = (LocatedToken) yyVals[-3+yyTop];
 		var sn = new Linq.RangeVariable (lt.Value, lt.Location);
@@ -9748,8 +9979,8 @@ void case_992()
 		((Linq.QueryBlock)current_block).AddRangeVariable (sn);
 	  }
 
-void case_994()
-#line 6693 "cs-parser.jay"
+void case_1019()
+#line 6878 "cs-parser.jay"
 {
 		yyVal = new Linq.Where ((Linq.QueryBlock)current_block, (Expression)yyVals[0+yyTop], GetLocation (yyVals[-2+yyTop]));
 
@@ -9757,8 +9988,8 @@ void case_994()
 		current_block = current_block.Parent;
 	  }
 
-void case_995()
-#line 6703 "cs-parser.jay"
+void case_1020()
+#line 6888 "cs-parser.jay"
 {
 		if (linq_clause_blocks == null)
 			linq_clause_blocks = new Stack<Linq.QueryBlock> ();
@@ -9767,8 +9998,8 @@ void case_995()
 		linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
 	  }
 
-void case_996()
-#line 6711 "cs-parser.jay"
+void case_1021()
+#line 6896 "cs-parser.jay"
 {
 		current_block.SetEndLocation (lexer.Location);
 		current_block = current_block.Parent;
@@ -9777,8 +10008,8 @@ void case_996()
 		linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
 	  }
 
-void case_997()
-#line 6719 "cs-parser.jay"
+void case_1022()
+#line 6904 "cs-parser.jay"
 {
 		current_block.AddStatement (new ContextualReturn ((Expression) yyVals[-1+yyTop]));
 		current_block.SetEndLocation (lexer.Location);
@@ -9787,8 +10018,8 @@ void case_997()
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  }
 
-void case_998()
-#line 6727 "cs-parser.jay"
+void case_1023()
+#line 6912 "cs-parser.jay"
 {
 		current_block.AddStatement (new ContextualReturn ((Expression) yyVals[-1+yyTop]));
 		current_block.SetEndLocation (lexer.Location);
@@ -9827,8 +10058,8 @@ void case_998()
 		((Linq.QueryBlock)current_block).AddRangeVariable (into);
 	  }
 
-void case_999()
-#line 6765 "cs-parser.jay"
+void case_1024()
+#line 6950 "cs-parser.jay"
 {
 		if (linq_clause_blocks == null)
 			linq_clause_blocks = new Stack<Linq.QueryBlock> ();
@@ -9837,8 +10068,8 @@ void case_999()
 		linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
 	  }
 
-void case_1000()
-#line 6773 "cs-parser.jay"
+void case_1025()
+#line 6958 "cs-parser.jay"
 {
 		current_block.SetEndLocation (lexer.Location);
 		current_block = current_block.Parent;
@@ -9847,8 +10078,8 @@ void case_1000()
 		linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
 	  }
 
-void case_1001()
-#line 6781 "cs-parser.jay"
+void case_1026()
+#line 6966 "cs-parser.jay"
 {
 		current_block.AddStatement (new ContextualReturn ((Expression) yyVals[-1+yyTop]));
 		current_block.SetEndLocation (lexer.Location);
@@ -9857,8 +10088,8 @@ void case_1001()
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  }
 
-void case_1002()
-#line 6789 "cs-parser.jay"
+void case_1027()
+#line 6974 "cs-parser.jay"
 {
 		current_block.AddStatement (new ContextualReturn ((Expression) yyVals[-1+yyTop]));
 		current_block.SetEndLocation (lexer.Location);
@@ -9901,22 +10132,22 @@ void case_1002()
 		((Linq.QueryBlock)current_block).AddRangeVariable (into);		
 	  }
 
-void case_1004()
-#line 6835 "cs-parser.jay"
+void case_1029()
+#line 7020 "cs-parser.jay"
 {
 		opt_intoStack.Push (GetLocation (yyVals[-1+yyTop]));
 		yyVal = yyVals[0+yyTop];
 	  }
 
-void case_1005()
-#line 6843 "cs-parser.jay"
+void case_1030()
+#line 7028 "cs-parser.jay"
 {
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 		lbag.AddLocation (current_block, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_1006()
-#line 6848 "cs-parser.jay"
+void case_1031()
+#line 7033 "cs-parser.jay"
 {
 		current_block.SetEndLocation (lexer.Location);
 		current_block = current_block.Parent;
@@ -9924,8 +10155,8 @@ void case_1006()
 		yyVal = yyVals[0+yyTop];
 	  }
 
-void case_1008()
-#line 6859 "cs-parser.jay"
+void case_1033()
+#line 7044 "cs-parser.jay"
 {
 		current_block.SetEndLocation (lexer.Location);
 		current_block = current_block.Parent;
@@ -9933,15 +10164,15 @@ void case_1008()
 		current_block = new Linq.QueryBlock (current_block, lexer.Location);
 	  }
 
-void case_1009()
-#line 6866 "cs-parser.jay"
+void case_1034()
+#line 7051 "cs-parser.jay"
 {
 		((Linq.AQueryClause)yyVals[-3+yyTop]).Next = (Linq.AQueryClause)yyVals[0+yyTop];
 		yyVal = yyVals[-3+yyTop];
 	  }
 
-void case_1011()
-#line 6875 "cs-parser.jay"
+void case_1036()
+#line 7060 "cs-parser.jay"
 {
 		current_block.SetEndLocation (lexer.Location);
 		current_block = current_block.Parent;
@@ -9949,43 +10180,43 @@ void case_1011()
 		current_block = new Linq.QueryBlock ((Linq.QueryBlock) current_block, lexer.Location);	 
 	 }
 
-void case_1012()
-#line 6882 "cs-parser.jay"
+void case_1037()
+#line 7067 "cs-parser.jay"
 {
 		((Linq.AQueryClause)yyVals[-3+yyTop]).Tail.Next = (Linq.AQueryClause)yyVals[0+yyTop];
 		yyVal = yyVals[-3+yyTop];
 	 }
 
-void case_1014()
-#line 6894 "cs-parser.jay"
+void case_1039()
+#line 7079 "cs-parser.jay"
 {
 		yyVal = new Linq.OrderByAscending ((Linq.QueryBlock) current_block, (Expression)yyVals[-1+yyTop]);	
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_1015()
-#line 6899 "cs-parser.jay"
+void case_1040()
+#line 7084 "cs-parser.jay"
 {
 		yyVal = new Linq.OrderByDescending ((Linq.QueryBlock) current_block, (Expression)yyVals[-1+yyTop]);	
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_1017()
-#line 6911 "cs-parser.jay"
+void case_1042()
+#line 7096 "cs-parser.jay"
 {
 		yyVal = new Linq.ThenByAscending ((Linq.QueryBlock) current_block, (Expression)yyVals[-1+yyTop]);	
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_1018()
-#line 6916 "cs-parser.jay"
+void case_1043()
+#line 7101 "cs-parser.jay"
 {
 		yyVal = new Linq.ThenByDescending ((Linq.QueryBlock) current_block, (Expression)yyVals[-1+yyTop]);	
 		lbag.AddLocation (yyVal, GetLocation (yyVals[0+yyTop]));
 	  }
 
-void case_1020()
-#line 6926 "cs-parser.jay"
+void case_1045()
+#line 7111 "cs-parser.jay"
 {
 		/* query continuation block is not linked with query block but with block*/
 		/* before. This means each query can use same range variable names for*/
@@ -10002,8 +10233,8 @@ void case_1020()
 		linq_clause_blocks.Push ((Linq.QueryBlock) current_block);		
 	  }
 
-void case_1021()
-#line 6942 "cs-parser.jay"
+void case_1046()
+#line 7127 "cs-parser.jay"
 {
 		var current_block = linq_clause_blocks.Pop ();	  
 		var lt = (LocatedToken) yyVals[-2+yyTop];
@@ -10013,8 +10244,8 @@ void case_1021()
   		};
 	  }
 
-void case_1024()
-#line 6969 "cs-parser.jay"
+void case_1049()
+#line 7154 "cs-parser.jay"
 { 
 		current_container = current_type = new Class (current_container, new MemberName ("<InteractiveExpressionClass>"), Modifiers.PUBLIC, null);
 
@@ -10043,8 +10274,8 @@ void case_1024()
 		start_block (lexer.Location);
 	  }
 
-void case_1025()
-#line 6997 "cs-parser.jay"
+void case_1050()
+#line 7182 "cs-parser.jay"
 {
 		--lexer.parsing_block;
 		var method = (InteractiveMethod) oob_stack.Pop ();
@@ -10058,24 +10289,24 @@ void case_1025()
 		current_local_parameters = null;
 	  }
 
-void case_1035()
-#line 7043 "cs-parser.jay"
+void case_1060()
+#line 7228 "cs-parser.jay"
 {
 		module.DocumentationBuilder.ParsedBuiltinType = (TypeExpression)yyVals[-1+yyTop];
 		module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)yyVals[0+yyTop];
 		yyVal = null;
 	  }
 
-void case_1036()
-#line 7049 "cs-parser.jay"
+void case_1061()
+#line 7234 "cs-parser.jay"
 {
 		module.DocumentationBuilder.ParsedBuiltinType = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation (yyVals[-1+yyTop]));
 		module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)yyVals[0+yyTop];
 		yyVal = null;
 	  }
 
-void case_1037()
-#line 7055 "cs-parser.jay"
+void case_1062()
+#line 7240 "cs-parser.jay"
 {
 		module.DocumentationBuilder.ParsedBuiltinType = (TypeExpression)yyVals[-3+yyTop];
 		module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)yyVals[0+yyTop];
@@ -10083,15 +10314,15 @@ void case_1037()
 		yyVal = new MemberName (lt.Value);
 	  }
 
-void case_1040()
-#line 7070 "cs-parser.jay"
+void case_1065()
+#line 7255 "cs-parser.jay"
 {
 		module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)yyVals[-1+yyTop];
 		yyVal = new MemberName ((MemberName) yyVals[-6+yyTop], MemberCache.IndexerNameAlias, Location.Null);
 	  }
 
-void case_1041()
-#line 7075 "cs-parser.jay"
+void case_1066()
+#line 7260 "cs-parser.jay"
 {
 		var p = (List<DocumentationParameter>)yyVals[0+yyTop] ?? new List<DocumentationParameter> (1);
 		p.Add (new DocumentationParameter ((FullNamedExpression) yyVals[-1+yyTop]));
@@ -10100,8 +10331,8 @@ void case_1041()
 		yyVal = null;
 	  }
 
-void case_1042()
-#line 7083 "cs-parser.jay"
+void case_1067()
+#line 7268 "cs-parser.jay"
 {
 		var p = (List<DocumentationParameter>)yyVals[0+yyTop] ?? new List<DocumentationParameter> (1);
 		p.Add (new DocumentationParameter ((FullNamedExpression) yyVals[-1+yyTop]));
@@ -10110,8 +10341,8 @@ void case_1042()
 		yyVal = null;
 	  }
 
-void case_1043()
-#line 7091 "cs-parser.jay"
+void case_1068()
+#line 7276 "cs-parser.jay"
 {
 		var p = (List<DocumentationParameter>)yyVals[0+yyTop];
 		module.DocumentationBuilder.ParsedParameters = p;
@@ -10119,24 +10350,24 @@ void case_1043()
 		yyVal = null;
 	  }
 
-void case_1051()
-#line 7129 "cs-parser.jay"
+void case_1076()
+#line 7314 "cs-parser.jay"
 {
 		var parameters = new List<DocumentationParameter> ();
 		parameters.Add ((DocumentationParameter) yyVals[0+yyTop]);
 		yyVal = parameters;
 	  }
 
-void case_1052()
-#line 7135 "cs-parser.jay"
+void case_1077()
+#line 7320 "cs-parser.jay"
 {
 		var parameters = yyVals[-2+yyTop] as List<DocumentationParameter>;
 		parameters.Add ((DocumentationParameter) yyVals[0+yyTop]);
 		yyVal = parameters;
 	  }
 
-void case_1053()
-#line 7144 "cs-parser.jay"
+void case_1078()
+#line 7329 "cs-parser.jay"
 {
 		if (yyVals[-1+yyTop] != null)
 			yyVal = new DocumentationParameter ((Parameter.Modifier) yyVals[-1+yyTop], (FullNamedExpression) yyVals[0+yyTop]);
@@ -10156,102 +10387,104 @@ void case_1053()
    40,   42,   42,   42,   42,   42,   43,   43,   43,   47,
    44,   46,   49,   49,   49,   51,   51,   52,   52,   53,
    53,   53,   53,   53,   53,   53,   53,   53,   53,   53,
-   53,   53,   68,   70,   73,   74,   75,   28,   28,   78,
-   54,   54,   79,   79,   80,   80,   81,   83,   77,   77,
-   82,   82,   88,   55,   92,   55,   55,   87,   95,   87,
-   89,   89,   96,   96,   97,   98,   97,   93,   93,   99,
-   99,  100,  101,   91,   91,   94,   94,   94,  104,   56,
-  107,  108,  102,  109,  110,  111,  102,  102,  102,  103,
-  103,  106,  106,  114,  114,  114,  114,  114,  114,  114,
-  114,  114,  114,  115,  115,  118,  118,  118,  118,  121,
-  118,  119,  119,  122,  122,  123,  123,  123,  116,  116,
-  116,  124,  124,  124,  117,  126,  128,  129,   57,  131,
-  132,  133,   59,  127,  127,  127,  127,  127,  137,  134,
-  138,  135,  136,  136,  136,  139,  140,  141,  143,   29,
-   29,  142,  142,  144,  144,  145,  145,  145,  145,  145,
-  145,  145,  145,  145,  148,   60,  147,  147,  149,  149,
-  152,  146,  146,  151,  151,  151,  151,  151,  151,  151,
-  151,  151,  151,  151,  151,  151,  151,  151,  151,  151,
-  151,  151,  151,  151,  151,  154,  153,  155,  153,  153,
-  153,   61,  158,  160,  156,  157,  157,  159,  159,  164,
-  162,  165,  162,  162,  162,  166,   62,  168,   58,  171,
-  172,   58,   58,  167,  174,  167,  169,  169,  175,  175,
-  176,  177,  176,  178,  173,  170,  170,  170,  170,  170,
-  182,  179,  183,  180,  181,  181,   63,   64,  185,  187,
-  188,   30,  184,  184,  184,  186,  186,  186,  189,  189,
-  190,  191,  190,  190,  190,  192,  193,  194,   31,  195,
-  195,   16,   16,  196,  196,  199,  198,  198,  198,  200,
-  200,  202,   67,  125,  105,  105,  130,  130,  203,  203,
-  203,  201,  201,  204,  204,  205,  205,  207,  207,   86,
-   76,   76,   90,   90,  120,  120,  150,  150,  208,  208,
-  208,  208,  208,  212,  212,  213,  211,  211,  211,  211,
-  211,  211,  211,  214,  214,  214,  214,  214,  214,  214,
-  214,  214,  215,  215,  215,  215,  215,  215,  215,  215,
-  215,  215,  215,  215,  215,  215,  215,  215,  215,  215,
-  215,  215,  216,  216,  216,  217,  217,  217,  237,  237,
-  238,  238,  239,  239,  219,  219,  236,  236,  236,  236,
-  236,  236,  236,  236,  236,  221,  221,  221,  241,  241,
-  242,  242,  243,  243,  245,  245,  245,  246,  246,  246,
-  246,  246,  246,  247,  247,  163,  163,  240,  240,  240,
-  240,  240,  252,  252,  251,  251,  253,  253,  253,  253,
-  254,  222,  222,  222,  250,  250,  255,  255,  256,  256,
-  223,  224,  224,  225,  226,  227,  227,  218,  218,  218,
-  218,  218,  261,  257,  228,  228,  262,  262,  263,  263,
-  264,  264,  264,  264,  265,  265,  265,  265,  258,  258,
-  209,  209,  260,  260,  266,  266,  259,  259,   85,   85,
-  267,  267,  268,  229,  269,  269,  269,  270,  270,  270,
-  270,  270,  271,  197,  230,  230,  231,  231,  232,  232,
-  233,  273,  234,  274,  234,  272,  272,  276,  275,  220,
-  277,  277,  277,  277,  277,  277,  277,  277,  277,  278,
-  278,  278,  278,  278,  278,  278,  278,  278,  278,  278,
-  278,  278,  279,  279,  279,  279,  279,  279,  279,  280,
-  280,  280,  280,  280,  280,  280,  280,  280,  280,  280,
-  281,  281,  281,  281,  281,  282,  282,  282,  282,  282,
-  282,  282,  282,  282,  283,  283,  283,  283,  283,  284,
-  284,  284,  285,  285,  285,  286,  286,  286,  287,  287,
-  287,  288,  288,  288,  289,  289,  290,  290,  290,  290,
-  290,  291,  291,  291,  291,  291,  291,  291,  291,  291,
-  291,  291,  292,  292,  293,  293,  293,  293,  294,  294,
-  296,  295,  295,  295,   50,   50,  298,  297,  299,  297,
-  300,  297,  301,  302,  297,  303,  304,  297,   45,   45,
-  248,  248,  248,  248,  235,  235,  235,   84,  306,   69,
-   69,  307,  308,  308,  308,  310,  308,  311,  312,  313,
-  314,   27,   66,   66,   65,   65,  112,  112,  315,  315,
-  315,  315,  315,  315,  315,  315,  315,  315,  315,  315,
-  315,  315,  315,   71,   71,  309,  309,   72,   72,  316,
-  316,  317,  317,  318,  318,  319,  319,  319,  319,  206,
-  206,  320,  320,  322,  113,  323,  323,  324,  161,  161,
-  326,  325,  321,  321,  327,  327,  328,  328,  328,  328,
-  328,  332,  332,  333,  333,  333,  330,  330,  330,  330,
-  330,  330,  330,  330,  330,  330,  330,  330,  330,  334,
-  334,  334,  334,  334,  334,  334,  334,  334,  334,  334,
-  334,  334,  348,  348,  348,  348,  335,  349,  331,  350,
-  350,  351,  351,  351,  351,  351,  351,  210,  210,  352,
-   48,   48,  354,  329,  358,  329,  356,  356,  353,  353,
-  353,  355,  355,  362,  362,  361,  361,  363,  363,  357,
-  357,  359,  359,  364,  364,  365,  360,  360,  360,  336,
-  336,  336,  347,  347,  366,  367,  367,  337,  337,  368,
-  368,  368,  371,  369,  369,  370,  370,  372,  372,  372,
-  373,  374,  374,  375,  375,  375,  338,  338,  338,  338,
-  376,  376,  377,  377,  377,  381,  378,  384,  380,  380,
-  387,  383,  383,  386,  386,  382,  382,  390,  389,  389,
-  385,  385,  388,  388,  392,  391,  391,  379,  379,  393,
-  379,  379,  379,  339,  339,  339,  339,  339,  339,  394,
-  395,  395,  396,  396,  396,  397,  397,  397,  398,  398,
-  398,  399,  399,  399,  400,  400,  340,  340,  340,  340,
-  401,  401,  403,  403,  402,  405,  402,  402,  402,  404,
-  404,  341,  342,  406,  345,  343,  343,  408,  409,  346,
-  411,  412,  344,  344,  344,  410,  410,  407,  407,  305,
-  305,  305,  305,  413,  413,  415,  415,  417,  416,  418,
-  416,  414,  414,  414,  414,  414,  422,  420,  423,  425,
-  420,  424,  424,  419,  419,  426,  426,  426,  426,  426,
-  431,  427,  432,  428,  433,  434,  435,  429,  437,  438,
-  439,  429,  436,  436,  441,  430,  440,  444,  440,  443,
-  446,  443,  442,  442,  442,  445,  445,  445,  421,  447,
-  421,    3,    3,  448,    3,    3,  449,  449,  249,  249,
-  244,  244,    5,  450,  450,  450,  450,  450,  454,  450,
-  450,  450,  450,  451,  451,  452,  455,  452,  453,  453,
-  456,  456,  457,
+   53,   53,   53,   67,   62,   72,   74,   77,   78,   79,
+   28,   28,   82,   54,   54,   83,   83,   84,   84,   85,
+   87,   81,   81,   86,   86,   92,   55,   96,   55,   55,
+   91,   99,   91,   93,   93,  100,  100,  101,  102,  101,
+   97,   97,  103,  103,  104,  105,   95,   95,   98,   98,
+   98,  108,   56,  111,  112,  106,  113,  114,  115,  106,
+  106,  106,  107,  107,  117,  117,  120,  118,  110,  110,
+  121,  121,  121,  121,  121,  121,  121,  121,  121,  121,
+  122,  122,  125,  125,  125,  125,  128,  125,  126,  126,
+  129,  129,  130,  130,  130,  123,  123,  123,  131,  131,
+  131,  124,  133,  135,  136,  138,   57,  139,   57,  137,
+  141,  137,  140,  140,  143,  145,   59,  144,  144,  134,
+  134,  134,  134,  134,  149,  146,  150,  147,  148,  148,
+  148,  151,  152,  153,  155,   29,   29,  154,  154,  156,
+  156,  157,  157,  157,  157,  157,  157,  157,  157,  157,
+  159,   60,  160,  160,  163,  158,  158,  162,  162,  162,
+  162,  162,  162,  162,  162,  162,  162,  162,  162,  162,
+  162,  162,  162,  162,  162,  162,  162,  162,  162,  165,
+  164,  166,  164,  164,  164,   61,  169,  171,  167,  168,
+  168,  170,  170,  175,  173,  176,  173,  173,  173,  177,
+   63,  179,   58,  182,  183,   58,   58,  178,  185,  178,
+  180,  180,  186,  186,  187,  188,  187,  189,  184,  181,
+  181,  181,  181,  181,  193,  190,  194,  191,  192,  192,
+   64,   65,  196,  198,  199,   30,  195,  195,  195,  197,
+  197,  197,  200,  200,  201,  202,  201,  201,  201,  203,
+  204,  205,   31,  206,  206,   16,   16,   16,  207,  207,
+  207,  211,  211,  209,  209,  209,  212,  212,  214,   71,
+  132,  109,  109,  142,  142,  215,  215,  215,  213,  213,
+  216,  216,  217,  217,  219,  219,   90,   80,   80,   94,
+   94,  127,  127,  161,  161,  221,  221,  221,  220,  224,
+  224,  224,  226,  226,  227,  225,  225,  225,  225,  225,
+  225,  225,  228,  228,  228,  228,  228,  228,  228,  228,
+  228,  229,  229,  229,  229,  229,  229,  229,  229,  229,
+  229,  229,  229,  229,  229,  229,  229,  229,  229,  229,
+  229,  230,  230,  230,  231,  231,  231,  251,  251,  252,
+  252,  253,  253,  233,  233,  250,  250,  250,  250,  250,
+  250,  250,  250,  250,  250,  250,  250,  235,  235,  235,
+  255,  255,  256,  256,  257,  257,  259,  259,  259,  260,
+  260,  260,  260,  260,  260,  260,  261,  261,  174,  174,
+  254,  254,  254,  254,  254,  266,  266,  265,  265,  267,
+  267,  267,  267,  268,  236,  236,  236,  236,  264,  264,
+  269,  269,  270,  270,  237,  238,  238,  239,  240,  241,
+  241,  232,  232,  232,  232,  232,  275,  271,  242,  242,
+  276,  276,  277,  277,  278,  278,  278,  278,  279,  279,
+  279,  279,  272,  272,  222,  222,  274,  274,  280,  280,
+  273,  273,   89,   89,  281,  281,  243,  282,  282,  210,
+  208,  244,  244,  245,  245,  246,  246,  247,  284,  248,
+  285,  248,  283,  283,  287,  286,  234,  288,  288,  288,
+  288,  288,  288,  288,  288,  288,  289,  289,  289,  289,
+  289,  289,  289,  289,  289,  289,  289,  289,  289,  290,
+  290,  290,  290,  290,  290,  290,  291,  291,  291,  291,
+  291,  291,  291,  291,  291,  291,  291,  292,  292,  292,
+  292,  292,  294,  294,  294,  294,  295,  295,  295,  295,
+  295,  296,  296,  296,  296,  296,  296,  296,  296,  296,
+  297,  297,  297,  297,  297,  298,  298,  298,  299,  299,
+  299,  300,  300,  300,  301,  301,  301,  302,  302,  302,
+  303,  303,  304,  304,  304,  304,  304,  305,  305,  305,
+  305,  305,  305,  305,  305,  305,  305,  305,  306,  306,
+  307,  307,  307,  307,  308,  308,  310,  309,  309,  309,
+   50,   50,  312,  311,  313,  311,  314,  311,  315,  316,
+  311,  317,  318,  311,   45,   45,  262,  262,  262,  262,
+  249,  249,  249,   88,  320,   73,   73,  321,  322,  322,
+  322,  322,  324,  322,  325,  326,  327,  328,   27,   70,
+   70,   69,   69,  116,  116,  329,  329,  329,  329,  329,
+  329,  329,  329,  329,  329,  329,  329,  329,  329,  329,
+   75,   75,  323,  323,   76,   76,  330,  330,  331,  331,
+  332,  332,  333,  333,  333,  333,  218,  218,  334,  334,
+  335,  119,   68,   68,  336,  172,  172,  338,  337,   66,
+   66,  339,  339,  340,  340,  340,  340,  340,  344,  344,
+  345,  345,  345,  342,  342,  342,  342,  342,  342,  342,
+  342,  342,  342,  342,  342,  342,  346,  346,  346,  346,
+  346,  346,  346,  346,  346,  346,  346,  346,  346,  360,
+  360,  360,  360,  347,  361,  343,  362,  362,  363,  363,
+  363,  363,  223,  223,  364,   48,   48,  366,  341,  370,
+  341,  368,  368,  365,  365,  365,  367,  367,  374,  374,
+  373,  373,  375,  375,  369,  369,  371,  371,  376,  376,
+  377,  372,  372,  372,  348,  348,  348,  359,  359,  378,
+  379,  379,  349,  349,  380,  380,  380,  383,  381,  381,
+  382,  382,  384,  384,  384,  385,  386,  386,  387,  387,
+  387,  350,  350,  350,  350,  388,  388,  389,  389,  389,
+  393,  390,  396,  392,  392,  399,  395,  395,  398,  398,
+  394,  394,  402,  401,  401,  397,  397,  400,  400,  404,
+  403,  403,  391,  391,  405,  391,  391,  391,  351,  351,
+  351,  351,  351,  351,  406,  407,  407,  408,  408,  408,
+  409,  409,  409,  410,  410,  410,  411,  411,  411,  412,
+  412,  352,  352,  352,  352,  413,  413,  293,  293,  414,
+  416,  414,  414,  414,  415,  415,  353,  354,  417,  357,
+  355,  355,  419,  420,  358,  422,  423,  356,  356,  356,
+  421,  421,  418,  418,  319,  319,  319,  319,  424,  424,
+  426,  426,  428,  427,  429,  427,  425,  425,  425,  425,
+  425,  433,  431,  434,  436,  431,  435,  435,  430,  430,
+  437,  437,  437,  437,  437,  442,  438,  443,  439,  444,
+  445,  446,  440,  448,  449,  450,  440,  447,  447,  452,
+  441,  451,  455,  451,  454,  457,  454,  453,  453,  453,
+  456,  456,  456,  432,  458,  432,    3,    3,  459,    3,
+    3,  460,  460,  263,  263,  258,  258,    5,  461,  461,
+  461,  461,  461,  465,  461,  461,  461,  461,  462,  462,
+  463,  466,  463,  464,  464,  467,  467,  468,
   };
    static readonly short [] yyLen = {           2,
     2,    0,    3,    1,    2,    4,    3,    1,    0,    1,
@@ -10264,1456 +10497,1576 @@ void case_1053()
     3,    0,    1,    1,    3,    3,    1,    1,    1,    0,
     4,    4,    0,    1,    1,    0,    1,    1,    2,    1,
     1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-    1,    1,    0,    0,    0,    0,    0,   17,    5,    0,
-    9,    5,    0,    1,    1,    2,    3,    0,    3,    1,
-    1,    1,    0,    8,    0,    9,    6,    0,    0,    3,
-    0,    1,    1,    2,    2,    0,    5,    0,    1,    1,
-    2,    3,    0,    4,    2,    1,    1,    1,    0,    3,
-    0,    0,   10,    0,    0,    0,   12,    8,    5,    1,
-    1,    0,    1,    1,    3,    3,    3,    5,    3,    5,
-    1,    1,    1,    1,    3,    4,    6,    2,    4,    0,
-    7,    0,    1,    1,    2,    1,    1,    1,    4,    6,
-    4,    1,    2,    2,    1,    0,    0,    0,   10,    0,
-    0,    0,   13,    1,    2,    1,    2,    1,    0,    5,
-    0,    5,    1,    1,    1,    0,    0,    0,    0,   15,
-    5,    0,    1,    1,    2,    1,    1,    1,    1,    1,
-    1,    1,    1,    1,    0,    5,    1,    1,    1,    1,
-    0,    7,    1,    1,    1,    1,    1,    1,    1,    1,
-    1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-    1,    1,    1,    1,    1,    0,    7,    0,    7,    2,
-    2,    2,    0,    0,    9,    1,    1,    0,    1,    0,
-    6,    0,    6,    2,    1,    0,    8,    0,    9,    0,
-    0,   10,    5,    0,    0,    3,    0,    1,    1,    2,
-    2,    0,    5,    0,    2,    2,    2,    1,    1,    1,
-    0,    5,    0,    5,    1,    1,    2,    4,    0,    0,
-    0,   12,    0,    2,    2,    0,    1,    2,    1,    3,
-    2,    0,    5,    3,    1,    0,    0,    0,   13,    0,
-    1,    1,    3,    1,    4,    2,    0,    3,    2,    1,
-    3,    0,    3,    1,    1,    3,    1,    2,    3,    4,
-    4,    0,    3,    1,    3,    3,    1,    1,    1,    1,
-    1,    1,    1,    1,    1,    1,    1,    2,    2,    2,
-    2,    2,    2,    1,    3,    1,    1,    1,    1,    1,
+    1,    1,    1,    0,    4,    0,    0,    0,    0,    0,
+   17,    5,    0,    9,    5,    0,    1,    1,    2,    3,
+    0,    3,    1,    1,    1,    0,    8,    0,    9,    6,
+    0,    0,    3,    0,    1,    1,    2,    2,    0,    5,
+    0,    1,    1,    2,    3,    0,    4,    2,    1,    1,
+    1,    0,    3,    0,    0,   10,    0,    0,    0,   12,
+    8,    5,    1,    1,    1,    1,    0,    4,    0,    1,
+    1,    3,    3,    3,    5,    3,    5,    1,    1,    1,
+    1,    3,    4,    6,    2,    4,    0,    7,    0,    1,
+    1,    2,    1,    1,    1,    4,    6,    4,    1,    2,
+    2,    1,    0,    0,    0,    0,   12,    0,    6,    0,
+    0,    4,    1,    1,    0,    0,   10,    3,    1,    1,
+    2,    1,    2,    1,    0,    5,    0,    5,    1,    1,
+    1,    0,    0,    0,    0,   15,    5,    0,    1,    1,
+    2,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+    0,    5,    1,    1,    0,    7,    1,    1,    1,    1,
     1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    1,    1,    1,    1,    1,    0,
+    7,    0,    7,    2,    2,    2,    0,    0,    9,    1,
+    1,    0,    1,    0,    6,    0,    6,    2,    1,    0,
+    8,    0,    9,    0,    0,   10,    5,    0,    0,    3,
+    0,    1,    1,    2,    2,    0,    5,    0,    2,    2,
+    2,    1,    1,    1,    0,    5,    0,    5,    1,    1,
+    2,    4,    0,    0,    0,   12,    0,    2,    2,    0,
+    1,    2,    1,    3,    2,    0,    5,    3,    1,    0,
+    0,    0,   13,    0,    1,    1,    3,    3,    1,    4,
+    4,    2,    2,    0,    3,    2,    1,    3,    0,    3,
+    1,    1,    3,    1,    2,    3,    4,    4,    0,    3,
+    1,    3,    3,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    2,    2,    2,    1,    1,    2,
+    2,    2,    1,    3,    1,    1,    1,    1,    1,    1,
     1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
     1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-    1,    1,    2,    2,    1,    1,    1,    1,    1,    1,
-    1,    1,    1,    1,    3,    3,    4,    4,    4,    4,
-    3,    3,    4,    3,    4,    4,    4,    3,    0,    1,
-    3,    4,    0,    1,    1,    3,    2,    3,    3,    1,
-    2,    3,    2,    1,    1,    0,    1,    1,    3,    3,
-    3,    2,    1,    1,    1,    1,    2,    2,    4,    3,
-    1,    4,    4,    3,    1,    3,    1,    3,    1,    1,
-    1,    4,    3,    2,    2,    6,    3,    7,    4,    3,
-    7,    3,    0,    2,    4,    3,    1,    2,    0,    1,
-    1,    3,    1,    2,    3,    1,    1,    1,    0,    1,
-    1,    2,    2,    3,    1,    2,    0,    1,    2,    4,
-    1,    3,    0,    5,    1,    1,    1,    2,    3,    3,
-    4,    4,    1,    2,    4,    4,    4,    2,    4,    2,
-    4,    0,    4,    0,    5,    0,    1,    0,    4,    4,
-    1,    2,    2,    4,    2,    2,    2,    4,    2,    1,
-    2,    2,    2,    2,    2,    2,    2,    2,    2,    2,
-    2,    2,    1,    3,    3,    3,    3,    3,    3,    1,
-    3,    3,    3,    3,    3,    3,    3,    3,    3,    3,
-    1,    3,    3,    3,    3,    1,    3,    3,    3,    3,
-    3,    3,    3,    3,    1,    3,    3,    3,    3,    1,
-    3,    3,    1,    3,    3,    1,    3,    3,    1,    3,
-    3,    1,    3,    3,    1,    3,    1,    5,    4,    5,
-    5,    3,    3,    3,    3,    3,    3,    3,    3,    3,
-    3,    3,    1,    3,    3,    2,    1,    1,    0,    1,
-    0,    2,    1,    1,    1,    1,    0,    4,    0,    4,
-    0,    5,    0,    0,    7,    0,    0,    8,    1,    1,
-    1,    1,    1,    1,    6,    4,    4,    1,    1,    0,
-    1,    3,    0,    1,    1,    0,    6,    0,    0,    0,
-    0,   15,    0,    1,    0,    1,    1,    2,    1,    1,
     1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-    1,    1,    1,    0,    1,    2,    3,    0,    1,    1,
-    2,    4,    3,    1,    3,    1,    3,    1,    1,    0,
-    1,    1,    1,    0,    4,    1,    1,    0,    4,    1,
-    0,    4,    0,    1,    1,    2,    1,    1,    1,    2,
     1,    1,    2,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    3,    3,    4,    4,    5,    4,    4,
+    4,    3,    3,    3,    4,    3,    4,    4,    4,    3,
+    0,    1,    3,    4,    0,    1,    1,    3,    2,    3,
+    3,    1,    2,    3,    5,    2,    1,    1,    0,    1,
+    1,    3,    3,    3,    2,    1,    1,    1,    1,    2,
+    2,    4,    3,    1,    4,    5,    4,    3,    1,    3,
+    1,    3,    1,    1,    1,    4,    3,    2,    2,    6,
+    3,    7,    4,    3,    7,    3,    0,    2,    4,    3,
+    1,    2,    0,    1,    1,    3,    1,    2,    3,    1,
+    1,    1,    0,    1,    1,    2,    2,    3,    1,    2,
+    0,    1,    2,    4,    1,    3,    4,    1,    1,    1,
+    2,    4,    4,    4,    2,    4,    2,    4,    0,    4,
+    0,    5,    0,    1,    0,    4,    4,    1,    2,    2,
+    4,    2,    2,    2,    4,    2,    1,    2,    2,    2,
+    2,    2,    2,    2,    2,    2,    2,    2,    2,    1,
+    3,    3,    3,    3,    3,    3,    1,    3,    3,    3,
+    3,    3,    4,    3,    3,    3,    3,    1,    2,    1,
+    2,    2,    2,    2,    1,    1,    1,    3,    3,    3,
+    3,    1,    3,    3,    3,    3,    3,    3,    3,    3,
+    1,    3,    3,    3,    3,    1,    3,    3,    1,    3,
+    3,    1,    3,    3,    1,    3,    3,    1,    3,    3,
+    1,    3,    1,    5,    4,    5,    5,    3,    3,    3,
+    3,    3,    3,    3,    3,    3,    3,    3,    1,    3,
+    3,    2,    1,    1,    0,    1,    0,    2,    1,    1,
+    1,    1,    0,    4,    0,    4,    0,    5,    0,    0,
+    7,    0,    0,    8,    1,    1,    1,    1,    1,    1,
+    6,    4,    4,    1,    1,    0,    1,    3,    0,    1,
+    1,    2,    0,    6,    0,    0,    0,    0,   15,    0,
+    1,    0,    1,    1,    2,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+    0,    1,    2,    3,    0,    1,    1,    2,    4,    3,
+    1,    3,    1,    3,    1,    1,    0,    1,    1,    1,
+    0,    4,    1,    1,    0,    4,    1,    0,    4,    0,
+    1,    1,    2,    1,    1,    1,    2,    1,    1,    2,
     1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
     1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-    1,    1,    1,    1,    1,    1,    1,    0,    4,    1,
-    2,    2,    2,    2,    2,    2,    1,    1,    2,    1,
-    1,    1,    0,    6,    0,    7,    1,    1,    0,    2,
-    1,    0,    1,    0,    1,    1,    2,    2,    4,    0,
-    2,    0,    1,    1,    2,    4,    1,    5,    2,    2,
-    2,    2,    2,    2,    1,    1,    1,    1,    1,    5,
-    7,    4,    0,    8,    4,    0,    1,    1,    2,    1,
-    2,    1,    2,    3,    3,    1,    1,    1,    1,    1,
-    5,    4,    7,    3,    6,    0,    4,    0,    4,    2,
-    0,    4,    2,    3,    1,    0,    1,    0,    5,    1,
-    0,    1,    0,    1,    1,    1,    3,    4,    5,    0,
-    9,    5,    4,    1,    1,    1,    1,    1,    1,    2,
-    2,    2,    3,    4,    3,    3,    3,    2,    3,    3,
-    2,    4,    4,    3,    0,    1,    3,    4,    5,    3,
-    1,    2,    0,    1,    3,    0,    8,    3,    6,    0,
-    4,    2,    2,    0,    3,    5,    4,    0,    0,   10,
-    0,    0,    9,    5,    4,    2,    1,    0,    2,    2,
-    2,    2,    2,    4,    5,    4,    5,    0,    5,    0,
-    6,    3,    2,    2,    2,    1,    0,    3,    0,    0,
-    5,    2,    1,    1,    2,    1,    1,    1,    1,    1,
-    0,    5,    0,    3,    0,    0,    0,   12,    0,    0,
-    0,   13,    0,    2,    0,    3,    1,    0,    4,    1,
-    0,    4,    1,    2,    2,    1,    2,    2,    0,    0,
-    4,    2,    3,    0,    4,    2,    2,    3,    0,    1,
-    1,    1,    2,    2,    2,    2,    4,    3,    0,    7,
-    4,    4,    3,    1,    3,    0,    0,    4,    0,    1,
-    1,    3,    2,
+    1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+    1,    1,    1,    1,    0,    4,    1,    2,    2,    2,
+    1,    1,    1,    2,    1,    1,    1,    0,    6,    0,
+    7,    1,    1,    0,    2,    1,    0,    1,    0,    1,
+    1,    2,    2,    4,    0,    2,    0,    1,    1,    2,
+    4,    1,    5,    2,    2,    2,    2,    2,    2,    1,
+    1,    1,    1,    1,    5,    7,    4,    0,    8,    4,
+    0,    1,    1,    2,    1,    2,    1,    2,    3,    3,
+    1,    1,    1,    1,    1,    5,    4,    7,    3,    6,
+    0,    4,    0,    4,    2,    0,    4,    2,    3,    1,
+    0,    1,    0,    5,    1,    0,    1,    0,    1,    1,
+    1,    3,    4,    5,    0,    9,    5,    4,    1,    1,
+    1,    1,    1,    1,    2,    2,    2,    3,    4,    3,
+    3,    3,    2,    3,    3,    2,    4,    4,    3,    0,
+    1,    3,    4,    5,    3,    1,    2,    0,    1,    3,
+    0,    8,    3,    6,    0,    4,    2,    2,    0,    3,
+    5,    4,    0,    0,   10,    0,    0,    9,    5,    4,
+    2,    1,    0,    2,    2,    2,    2,    2,    4,    5,
+    4,    5,    0,    5,    0,    6,    3,    2,    2,    2,
+    1,    0,    3,    0,    0,    5,    2,    1,    1,    2,
+    1,    1,    1,    1,    1,    0,    5,    0,    3,    0,
+    0,    0,   12,    0,    0,    0,   13,    0,    2,    0,
+    3,    1,    0,    4,    1,    0,    4,    1,    2,    2,
+    1,    2,    2,    0,    0,    4,    2,    3,    0,    4,
+    2,    2,    3,    0,    1,    1,    1,    2,    2,    2,
+    2,    4,    3,    0,    7,    4,    4,    3,    1,    3,
+    0,    0,    4,    0,    1,    1,    3,    2,
   };
    static readonly short [] yyDefRed = {            0,
     8,    0,    0,    0,    0,    0,    0,    0,    2,    4,
-    0,    0,   11,   14,    0, 1022,    0,    0, 1026,    0,
-    0,   15,   17,  389,  395,  402,  390,  392,    0,  391,
-    0,  398,  400,  387,    0,  394,  396,  388,  399,  401,
-  397,    0,  352, 1044,    0,  393, 1033,    0,   10,    1,
-    0,    0,    0,   12,    0,  847,    0,    0,    0,    0,
-    0,    0,    0,    0,  430,    0,    0,    0,    0,    0,
-    0,    0,  428,    0,    0,    0,  491,    0,  429,    0,
-  533,    0,  944,    0,    0,    0,  684,    0,    0,    0,
-    0,    0,    0,    0,  744,    0,  797,    0,    0,    0,
-    0,    0,    0,    0,    0,  427,    0,  673,    0,  846,
-    0,  780,    0,    0,    0,    0,  404,  405,  406,  407,
-  408,  409,  410,  411,  412,  413,  414,  415,  416,  417,
-  418,  419,  420,  421,  422,  425,  426,  680,  570,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,  681,  679,  682,  683,  764,  766,    0,  762,  765,
-  781,  783,  784,  785,  786,  787,  788,  789,  790,  791,
-  792,  782,    0,    0,    0,  848,  849,  867,  868,  869,
-  870,  904,  905,  906,  907,  908,  909,    0,    0,    0,
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+  536,    0,  486,    0,    0,    0, 1056, 1057,  473,  479,
+    0,  483,    0,    0,    0,    0,    0,    0,  878,    0,
+  963,    0,  960,  954,  979,    0,  896,  992,  990,    0,
+  572,    0,  698,  688,  368,  681,  680,  700,  458,  506,
+  503,    0,  494,  493,  492,  666,  667,  664,    0,  862,
+  845,    0,    0,    0,  851,    0,  995,    0, 1024,    0,
+    0, 1039, 1040, 1033,    0, 1077,  383,  382,    0,    0,
+   66,   59,    0,   68,   29,   22,    0,    0,  333,    0,
+  237,    0,  112,    0,   82,  856,  124,  125,    0,    0,
+    0,  859,  200,  201,    0,    0,    0,    0,  173,  182,
+  174,  176,  900,    0,    0,    0,    0,    0,  922,    0,
+    0,  487,  488,  481,  484,  480,    0,  474,  478,    0,
+  544,    0,  510,  520,  472,  556,  554,    0,    0,    0,
+  982,    0,    0,  711,  703,    0,  502,    0,    0,  843,
+  842,  839,  852,  994,    0,    0,    0, 1008,    0, 1006,
+ 1017,    0, 1046, 1065,    0,   79,    0,    0,   73,   74,
+   77,   78,    0,  350,  339,  338,    0,  726,  233,  107,
+    0,  841,  860,  186,    0,  198,    0,    0,    0,  898,
+  984,    0,    0,    0,    0,  904,    0,  925,  876,    0,
+  525,  522,  885,    0,  891,    0,    0,  883,    0,  887,
+  966,    0,  981,  977,    0,  701,    0,    0,  996, 1021,
+    0, 1007,    0,    0, 1035,    0,   80,   71,    0,    0,
+    0,  334,    0,    0,    0,    0,    0,  187,    0,  177,
+  175,  974,  914,  908,  906,    0,  485,    0,  879,  884,
+    0,  888,  964,    0,    0,  704,    0,  854,    0, 1025,
+ 1042, 1043, 1036,   58,    0,   75,   76,    0,    0,    0,
+    0,    0,    0,    0,  720,    0,  752,    0,  717,  861,
+  184,    0,  197,    0,    0,  926,  890,  889,    0,  978,
+  863,    0,    0,    0,   81,    0,    0,  351,    0,    0,
+  349,  335,    0,  343,    0,  405,    0,  403,    0,    0,
+  727,    0,  757,  234,    0,  188,  975,  910,  907,    0,
+    0,  919,  775,  777,  962, 1022,    0, 1037,    0,    0,
+    0,  331,    0,    0,  718,  754,    0,  723,    0,    0,
+  758,    0,  108,    0,    0,    0, 1026,   27,   26,   23,
+  352,  348,    0,    0,  344,  404,    0,  760,    0,    0,
+    0,    0,  909,    0,    0,    0,    0,    0,   32,  336,
+    0,  765,    0,  766,  763,    0,  761,  103,  104,    0,
+  100,    0,    0,   88,   90,   91,   92,   93,   94,   95,
+   96,   97,   98,   99,  101,  102,  152,    0,    0,  250,
+  242,  243,  244,  245,  246,  247,  248,  249,    0,    0,
+  240,  109,  776,    0, 1023,    0,  353,  347,  724,    0,
+    0,    0,    0,  728,   89,    0,  291,  286,  290,    0,
+  235,  241,    0, 1029, 1027,  764,  762,    0,    0,    0,
+    0,    0,    0,    0,    0,  300,    0,    0,  251,    0,
+    0,  257,    0,  167,  166,  153,  163,  164,  165,    0,
+    0,    0,  105,    0,    0,  285,    0,    0,  284,    0,
+  157,    0,    0,  374,  332,    0,  372,    0,    0,    0,
+    0,    0,    0,    0,    0,  729,    0,  236,  110,  115,
+  113,  307,    0,  371,    0,    0,    0,    0,  128,    0,
+    0,    0,    0,    0,    0,  162,  154,    0,    0,    0,
+  215,    0,  375,    0,  252,    0,    0,    0,    0,  304,
+    0,  282,  130,    0,  280,    0,    0,    0,  132,    0,
+  376,    0,    0,  204,  209,    0,    0,    0,  373,  255,
+  168,  111,  123,  121,    0,    0,  309,    0,    0,    0,
+    0,    0,  158,    0,  288,    0,    0,    0,    0,  136,
+    0,    0,    0,    0,  377,  378,    0,    0,    0,    0,
+    0,  118,  324,    0,  305,    0,    0,  318,    0,    0,
+    0,  313,    0,  148,    0,    0,    0,    0,  143,    0,
+    0,  301,    0,  133,    0,  127,  137,  155,  161,  224,
+    0,  205,    0,    0,  216,    0,  122,    0,  114,  119,
+    0,    0,    0,  320,    0,  321,  310,    0,    0,  303,
+  314,  283,    0,    0,  129,  144,  281,    0,  299,    0,
+  289,  293,  139,    0,    0,    0,  221,  223,    0,  256,
+  120,  325,  327,  306,    0,    0,  319,  316,  147,  145,
+  159,  298,    0,    0,    0,  156,  225,  227,  206,    0,
+  219,  217,    0,    0,  318,    0,  294,  296,  140,    0,
+    0,    0,    0,  329,  330,  326,  328,  317,  160,    0,
+    0,  231,  230,  229,  226,  228,  211,  207,  218,    0,
+    0,    0,  295,  297,  213,  214,    0,  212,
   };
   protected static readonly short [] yyDgoto  = {             7,
-    8,   50,    9,   51,   10,   11,   52,  234,  753,  754,
-   12,   13,   53,   22,   23,  329,  237,  738,  917, 1119,
- 1243, 1296, 1606,  914,  238,  239,  240,  241,  242,  243,
-  244,  245,  731,  468,  732,  733, 1022,  734,  735, 1026,
-  915, 1114, 1115, 1116,  270,  631, 1211,  111,  926,  794,
- 1327, 1328, 1329, 1330, 1331, 1332, 1333, 1334, 1335, 1336,
- 1337, 1338, 1339, 1340,  487,  742, 1415, 1036, 1224, 1182,
- 1222, 1257, 1308, 1376, 1455, 1252, 1480, 1456, 1505, 1506,
- 1507, 1038, 1503, 1039,  803,  918, 1467, 1441, 1493,  543,
- 1486, 1461, 1522, 1002, 1491, 1494, 1495, 1590, 1523, 1524,
- 1520, 1341, 1397, 1369, 1416,  755, 1469, 1569, 1438, 1526,
- 1599,  488,  271,  756,  757,  758,  759,  760,  713,  604,
- 1228,  714,  715,  932, 1418, 1446, 1537, 1498, 1571, 1419,
- 1472, 1574, 1619, 1538, 1539, 1617, 1603, 1604, 1034, 1181,
- 1288, 1353, 1400, 1354, 1355, 1391, 1453, 1422, 1392,  332,
-  224, 1502, 1394, 1487, 1484, 1342, 1371, 1411, 1566, 1528,
- 1271, 1567,  632, 1612, 1613, 1410, 1483, 1458, 1515, 1510,
- 1481, 1547, 1552, 1513, 1516, 1517, 1598, 1553, 1511, 1512,
- 1608, 1596, 1597, 1031, 1123, 1248, 1216, 1279, 1249, 1250,
- 1299, 1178, 1276, 1313,  564,  194,  113,  372,  196,  597,
-  464,  227, 1433,  722,  723,  906,  919,  333,  428,  563,
-  308, 1253, 1254,   46,  115,  309,  117,  118,  119,  120,
-  121,  122,  123,  124,  125,  126,  127,  128,  129,  130,
-  131,  132,  133,  134,  135,  136,  137,  255,  877,  799,
- 1075, 1065,  787,  956,  788,  789, 1066,  138,  199,  795,
-  634,  635,  636,  871,  497,  498,  301, 1073,  797,  429,
-  303,  526,  527,  528,  529,  532,  805,  317,  823,  824,
-  974,  267,  503,  838,  268,  502,  139,  140,  141,  142,
-  143,  144,  145,  146,  147,  148,  149,  150,  151,  152,
-  153,  607,  608,  609,  843,  844,  154,  594,  582,  840,
-  373, 1092,  578, 1162,  155,  517, 1219, 1220, 1223, 1303,
- 1032, 1180, 1286, 1395,  489, 1258, 1259, 1322, 1323,  907,
-  586,  350,  849, 1291,    0,    0,  587,  588,  272,  273,
-  274,  158,  159,  160,  275,  276,  277,  278,  279,  280,
-  281,  282,  283,  284,  285,  286,  172,  287,  614,  173,
-  174,  325,  884,  691, 1005, 1098,  929,  749, 1042, 1003,
- 1006, 1139, 1007, 1043, 1044,  288,  175,  176,  177, 1151,
- 1079, 1152, 1153, 1154, 1155,  178,  179,  180,  181,  766,
-  510,  767, 1142, 1060, 1143, 1265, 1231, 1266,  768, 1059,
-  769, 1268, 1193,  182,  183,  184,  185,  186,  187,  310,
-  554,  555, 1082,  812, 1200,  321, 1058,  939, 1230, 1089,
-  980, 1201,  188,  441,  189,  442, 1008, 1101,  443,  444,
-  707,  698,  699, 1106, 1012,  445,  446,  447,  448,  449,
- 1013,  693, 1010, 1205, 1292, 1359, 1103, 1239, 1312,  894,
-  701,  895, 1171, 1108, 1172, 1240, 1017,   17,   19,   47,
-   48,  226,  716,  910,  462,  717,  718,
+    8,   50,    9,   51,   10,   11,   52,  237,  771,  772,
+   12,   13,   53,   22,   23,  331,  240,  756,  939, 1133,
+ 1257, 1310, 1634,  936,  241,  242,  243,  244,  245,  246,
+  247,  248,  749,  474,  750,  751, 1040,  752,  753, 1044,
+  937, 1128, 1129, 1130,  273,  641, 1225,  111,  948,  813,
+ 1342, 1343, 1344, 1345, 1346, 1347, 1348, 1349, 1350, 1351,
+ 1352, 1353, 1354, 1355, 1356,  593, 1382,  860,  493,  760,
+ 1437, 1054, 1238, 1195, 1236, 1271, 1322, 1393, 1478, 1266,
+ 1505, 1479, 1530, 1531, 1532, 1056, 1528, 1057,  822,  940,
+ 1490, 1464, 1518,  548, 1511, 1484, 1547, 1020, 1516, 1519,
+ 1520, 1615, 1548, 1549, 1545, 1357, 1416, 1386, 1438,  773,
+ 1492, 1594, 1461, 1551, 1626,  494, 1417, 1418,  274, 1447,
+  774,  775,  776,  777,  778,  731,  611, 1242,  732,  733,
+  954, 1440, 1469, 1562, 1523, 1596, 1648, 1632, 1470, 1657,
+ 1652, 1441, 1496, 1622, 1599, 1563, 1564, 1645, 1630, 1631,
+ 1052, 1194, 1302, 1369, 1421, 1370, 1371, 1409, 1444, 1410,
+  334,  227, 1527, 1412, 1512, 1509, 1358, 1388, 1433, 1591,
+ 1553, 1285, 1592,  642, 1640, 1641, 1432, 1508, 1481, 1540,
+ 1535, 1506, 1572, 1577, 1538, 1541, 1542, 1625, 1578, 1536,
+ 1537, 1636, 1623, 1624, 1049, 1137, 1262, 1230, 1293, 1263,
+ 1264, 1313, 1191, 1290, 1327,  388,  197,  113,  377,  378,
+  114,  604,  470,  230, 1456,  740,  741,  928,  941,  335,
+  336,  435,  327,  337,  311, 1267, 1268,   46,  118,  312,
+  120,  121,  122,  123,  124,  125,  126,  127,  128,  129,
+  130,  131,  132,  133,  134,  135,  136,  137,  138,  139,
+  140,  258,  891,  818, 1094, 1083,  806,  979,  807,  808,
+ 1084,  141,  202,  814,  644,  645,  646,  885,  503,  504,
+  304, 1092,  816,  436,  306,  532,  533,  534,  535,  538,
+  824,  566,  270,  509,  849,  271,  508,  142,  143,  144,
+  145,  673,  899,  674,  146,  147,  148,  149,  150,  151,
+  152,  153,  154,  155,  156,  614,  615,  616,  854,  855,
+  157,  601,  589,  851,  379, 1106,  585, 1175,  158,  523,
+ 1233, 1234, 1237, 1317, 1050, 1193, 1300, 1413,  495, 1272,
+ 1273, 1336, 1337,  929,  354, 1305,    0,    0,  594,  595,
+  275,  276,  277,  161,  162,  163,  278,  279,  280,  281,
+  282,  283,  284,  285,  286,  287,  288,  289,  175,  290,
+  621,  176,  177,  328,  905,  708, 1023, 1112,  951,  767,
+ 1060, 1021, 1024, 1153, 1025, 1061, 1062,  291,  178,  179,
+  180, 1166, 1098, 1167, 1168, 1169, 1170,  181,  182,  183,
+  184,  784,  516,  785, 1156, 1078, 1157, 1279, 1245, 1280,
+  786, 1077,  787, 1282, 1206,  185,  186,  187,  188,  189,
+  190,  313,  560,  561,  831, 1214,  324, 1076,  961, 1244,
+ 1103,  996, 1215,  191,  448,  192,  449, 1026, 1115,  450,
+  451,  724,  715,  716, 1120, 1030,  452,  453,  454,  455,
+  456, 1031,  710, 1028, 1219, 1306, 1375, 1117, 1253, 1326,
+  915,  718,  916, 1184, 1122, 1185, 1254, 1035,   17,   19,
+   47,   48,  229,  734,  932,  468,  735,  736,
   };
-  protected static readonly short [] yySindex = {          -98,
-    0, -176,   55, -199,   34,17217,    0,  149,    0,    0,
-   34, -199,    0,    0,   28,    0, 7035,   34,    0, -170,
- -239,    0,    0,    0,    0,    0,    0,    0,  200,    0,
-  297,    0,    0,    0, 1389,    0,    0,    0,    0,    0,
-    0,  320,    0,    0,  678,    0,    0,  732,    0,    0,
-  149,  366,   34,    0,  443,    0,   30,  529, -141,16646,
-  -77,  298,  548, 7192,    0,  298,  298,  298,   38,  298,
-  298,  788,    0, 9169,  298,  298,    0, 9326,    0,  512,
-    0, -118,    0,  298,  554,  298,    0,  777,  777,  587,
-  298,  298,  -73, 9485,    0,15885,    0,10665,10796,10927,
-11058,11189,11320,11451,11582,    0,  226,    0, 9029,    0,
-  230,    0,  212,  551,  744, -223,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0, 1744,
-  805,   96,  465,  640,  714,  617,  576,  654,  661,  164,
-  679,    0,    0,    0,    0,    0,    0, 3587,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,  212,  711,  319,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,  158,  387,  366,
-    0,  472,  626,    0,  700,    0,    0,    0,    0, 9029,
- 9029,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,  320,    0,    0,  681,  713,    0,   18,
-    0,    0,    0,  366,17762,  802,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,  818,  212,16021,    0,
-    0,    0,    0,    0,15885, -180, -174,  857,  771,  409,
-  744,  212,    0,    0, 9029,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,  108, -279,16646,    0,
- 9029,15885,  808,    0,    0,  811,15885,15885, 5423,  218,
- -110,  793, 9186,    0, 9485,  226,  946,  837,    0,  842,
- 9029,15885,    0,  957,  851,  549,  298,    0,    0,15885,
-  512,15477,    0,    0,  554,15885,  554,  176,  557,  940,
-  212,    0,  711, -223,  943,  212,15885,15885,15885,  548,
-    0,  898,    0, 9029, 9029,    0,10534,  212,    0, 7349,
- -240,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0, 4470,
-    0,    0,17043,  176,  872,  888,15885,    0,  854,    0,
-  173,    0,    0,  217,    0,    0,  853, 9616, 7663,    0,
-    0,15885,15885,15885,15885,15885,15885,15885,15885,15885,
-15885,15885,11713,11844,11975, 4629, 4794,12106,12237,12368,
-12499,12630,12761,12892,13023,13154,13285,13416,13547,13678,
-13809,13940,16429,15885,    0,    0,    0,    0,  711,    0,
-    0,    0,    0,  777,  777,    0,    0,  212,    0,    0,
-    0,    0,  442,  932,    0,    0,    0,    0,    0,    0,
-    0,  366,  802,  867,    0,  896,    0,  854,  320,  320,
-    0,  643,  171,    0,  320,  935,    0, -131,17762,    0,
-    0,    0,    0, -162,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,   93,17794,    0,    0,
-    0,    0,  854,    0,    0,  970,  503,    0,  950,    0,
-  977,  157,  512,    0,  298,    0,    0,    0,  212,15477,
- -185,    0,  974,    0,    0,    0,  110,  111,    0,  771,
-  409,    0,    0,  975,    0,  985,    0,  981,  941,    0,
-    0,  645,    0, 8406,  705, 9773,  793,15341,    0, 7820,
-    0,  554,    0,    0,    0,    0,  117,  134,    0,    0,
-    0,   70,  512, -151,    0, 4152,  991,    0,  152,  212,
-    0,  161,    0,    0,    0,15885, 1070,    0,    0,    0,
-15885, 1075,  997,    0, 1002, 1003,    0,17043,    0,    0,
-    0,  170,  854,    0, -206,  133, 7349,    0,    0,    0,
-    0,    0,    0,  170,    0,    0, -254,    0,    0,    0,
-  554,    0,  176,  212, 9790,    0, 1004,    0, 1020,14071,
-    0, 1137, 1021, 7349,    0,  968,    0,  854,  971,    0,
-  854,  854,    0,   77,    0,15885,15885, 1027, 1144,    0,
-    0,  189, -154,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,  805,    0,
-  805,    0,10403,   96,    0,   96,    0,  465,    0,  465,
-    0,  465,    0,  465,    0,  640,    0,  640,    0,  714,
-    0,  617,    0,  576,    0,  654,    0,  661,    0,  -58,
- -172,    0, 9773, 1108,  212, 1110,  212, 9773, 9773, 1029,
-15885,    0,    0,  932,    0,  212,    0,  665,  854,    0,
-    0,    0, 9790,  643,    0, 1039, 1040,    0,    0,  377,
-  366,  390,    0,    0,    0,    0,    0,    0, -203, 1047,
-    0, 1038, 1051,    0,    0,    0,    0, 1048, 9947, 1017,
-    0,  424,    0,    0,  530,    0,16021,    0, 1055,    0,
-    0,    0,  591,  177, 1065,    0, 1064, 1067, 1068,    0,
-    0,15885,    0,  212,    0,    0,  754,    0, 1069,    0,
-  327,    0,    0, 7192,    0, 7192, 8565,    0,14202,    0,
-    0,    0, 8724, 8855,  242,    0,  166,  -81,    0, 1010,
- 1022,    0,    0,    0,  751,    0,    0, 1072, 1074,    0,
-    0,    0,    0,    0, 1076,    0,    0,    0, 1082,  298,
- 7680,  512,    0,  512,    0,    0,  554,  581, 1030,    0,
-  274,    0, 1080, 1081,    0,    0, 7192,    0,    0, 7192,
-    0,15885,    0,15885, 9029,    0,    0,  512, 1086,  170,
-    0,    0,    0,15885,    0,    0,    0,    0,    0,    0,
-    0, 9029,    0,    0,  212,17043, 1116,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,15205,    0,    0,    0,    0,    0, 7977,    0,
- 9012,    0, 8134, 1079,    0,    0, 1166,    0, 1167,    0,
-    0,    0,  923,    0, 1089,    0,    0,    0,    0,    0,
-    0,    0,  643,    0,    0, 1049,    0,  171,    0,  643,
-    0,    0,  867, 1096, 1097, 1054, 1102, 1017,    0, 1098,
-    0, 1219, 1220,    0,    0, 9773,    0,15613, 1106,  591,
- 9790, 9029,    0,    0,  386, 1225, 1226,  163, 1104,    0,
-    0,    0,15885,    0,15885, 1203,    0,    0,    0,15749,
-    0,  555,15749,    0,    0,    0,    0, 8270,    0, 1244,
-  711, 9773, 1134, 8565, 1138,    0,15885,    0,  212,    0,
-    0,  301,    0,    0,  854, 1030,    0,  212,    0, -168,
-    0,    0,    0, 1130,    0, 1164,    0,    0,    0,    0,
-    0,    0,    0,  804,    0,    0,    0,    0,    0,    0,
- 9186,    0,    0,  212,  595, 1079,    0, 9773,    0, 9773,
-    0,  141, 9773,    0,    0,    0,  789,    0,    0,    0,
- 1139,  867,    0,    0, 9930,    0,    0,    0, 1140, 7837,
-    0, 1017,    0, 1017,    0, 1017,    0,    0,    0,    0,
-  212, 1132, 1106,    0,    0,    0, -171, -150, 1136, 1141,
-    0,    0,    0,    0,    0, 1143, 8565, 1079, -172,15885,
-    0, 1145, 7192,    0,    0,    0,    0,    0,    0,    0,
- 1142,    0,  793,    0,    0,    0,    0,    0, -212, 1148,
-    0, 1149,  854, 1030,    0, 1030,    0, 1079, 1153,    0,
-    0,  170,    0, 1090, 1135,    0,    0,    0,    0,    0,
- 9773, 1179, 9773,    0, 9773,    0,    0,15885,    0,    0,
- 1051,    0,  368,  825,    0,    0,    0,    0, -199,    0,
-    0,    0, 1160,    0,    0,    0, 1147,    0,    0,    0,
-  509,    0, 1150, 1273, 1274,    0,    0, 1079, 1161, 1079,
- 1165,    0, 1156,    0,    0,    0,    0,    0,15885,    0,
- 1170, -167,    0, 6876,    0,    0, 1283,    0,    0,    0,
-    0,  170,    0,15885, 8134,    0,    0, 1194,    0,  938,
- 1168,    0, 1173,    0,    0, 9930,   34,  157,    0,  302,
- 1169, 1175,15613, 1181,    0,15885,    0,    0,    0,    0,
-    0,    0, 7192,   40,    0,    0, 7349,    0,    0, 1260,
- 7192,    0, 1183,    0, 9773,    0,    0,    0,    0,    0,
-15885,    0,    0,  366, 1184,  366,  157, 9029, 1169, 1218,
-    0, 1218,    0, 1169,    0,    0,    0,15885,    0, 7192,
-10087,    0,    0,    0,  884,    0,    0, 1210, 9773,15885,
-    0,  366, 1195,    0, 1146,  931,    0,    0, 1188,    0,
- 1196,    0,   97,    0, 1198, 1152,    0, 1218,    0,    0,
- 1218,    0,    0,    0,    0, 1200, 1069,    0,    0,    0,
-    0,    0, 1227,    0,   52, 1218, 1311,    0, 1209,  366,
-    0,    0, 9029,    0,   63, 1211,    0, 1212,    0, 7192,
- 7349, 9773,    0,    0,    0,    0,    0,    0, 1199, 1206,
-    0,    0,15341,    0,16725,  183,  366, 1216,    0, 1217,
- 1228, 9773, 1213,15885,    0,    0, 1232,    0, 1221,    0,
-    0, 1214,    0,    0,17794,    0, 1222,  183,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,  534,17794,    0,    0,    0,    0,    0,    0,    0,
-    0,    0, 1223,  366,    0,    0,    0,  212,    0, 1228,
-    0,    0,    0, 1233,16725,16891,    0,    0, -222,    0,
-    0,    0,16923,    0,    0,  183,    0,    0,    0,    0,
- 9029, 9029, -165, 9186,  460,  554, 1261,    0,  176,15059,
-    0, 1292,    0,    0, 1206,    0,    0,    0,15097, 1206,
- 1239, -147, -132,    0, 9029, -126,    0, 9029,    0, 1201,
- 1249,    0,    0,  176,    0,  168,15135,    0, 1254, 1208,
-  175,  453, 1389,    0,    0,    0,    0,    0,    0,  176,
-    0, 1257, 1224, 1256, 1252,    0, 1264, 1231, 1268,  157,
- 1250, 1270,    0,    0, 1279, 1286,    0,  854,    0,  911,
-    0,    0,    0, 1284, 1206,  -49,    0, 1285,    0,    0,
- 1295,    0, 1294, 1282, 1296,    0, 1293,    0,  157,  157,
-    0,  157, 1297, 1298,    0,    0,    0,    0,    0, 1299,
-  184,    0, 1302,  157, 1413, 1303,  157,    0, -222,    0,
- 8565, 1266, 1310, 1293,    0, 1300, 1307,  187, 1317,    0,
-    0,  157,15613, 1272, 1312, 1299,    0,    0,17794,    0,
-  366,  366,    0, 1275, 1316, 1302,    0, 1322,    0,15885,
- 1278, 1323, 1303,    0, 1329,  157,    0,   95,    0, 1321,
-    0,    0,    0,    0,    0,17794,    0,  187,  187,    0,
- 1331,    0,  -49,    0,    0, -146, 1336,17794,    0,17794,
-    0,    0, 8565, 1324,    0,    0,    0, 1337, 1295,    0,
-    0,    0, 1338,    0, -120,    0,    0,    0, 1218,  965,
- 1340,    0,    0, 1342,    0,    0,    0,    0,    0, 1396,
- 1449,    0,    0,    0,    0,    0,    0, 1343, 1346, 8565,
-    0,    0,    0,    0,  187,  508,  508,    0, 1218,    0,
-    0,    0,  -60,  -60,    0,    0,    0,    0,    0,    0,
-    0,15341,15341,    0,    0,    0,    0,    0, 1345, 1350,
- 1351,    0,    0,    0,
+  protected static readonly short [] yySindex = {          -68,
+    0, -187,  189,  161,  258,18441,    0,  251,    0,    0,
+  258,  161,    0,    0,  303,    0, 8261,  258,    0, -151,
+ -258,    0,    0,    0,    0,    0,    0,    0,  249,    0,
+  448,    0,    0,    0, 5471,    0,    0,    0,    0,    0,
+    0,  297,    0,    0,  426,    0,    0,  720,    0,    0,
+  251,  495,  258,    0,  534,    0,  322,  590, -183,17987,
+  -27,  138,  512, 8419,    0,  138,  138,  138,  -90,  138,
+  138,  610,    0,10410,  138,  138,    0,10568,    0,  642,
+  138, -181,    0,  138,  645,  138,    0,18473,18473,  666,
+  138,  138,   97,10728,    0,17096,    0,11916,12048,12180,
+12312,12444,12576,12708,12840,    0,  232,    0, 9503,    0,
+  184,    0,   50,    0,    0,    0,  579,  500, -234,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,  853,  917,  209,  755,  636,  338,  671,  697,
+  686,  694,  533,  713,    0,    0,    0,    0,    0,    0,
+ 3940,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,   50,  745,  197,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+  377,  418,  495,    0,  517, -240,    0,  704,    0,    0,
+    0,    0, 9503, 9503,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,  297,    0,    0,  712,
+  751,    0, -200,    0,    0,    0,  495,19024,  841,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,  877,
+   50,17233,    0,    0,    0,    0,    0,17096, -205, -141,
+  901,  811,  488,  500,   50,    0,    0, 9503,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,  156,
+  275,17987,    0, 9503,17096,  816,    0,    0,  826,17096,
+17096, 6467,  537,  -93,  874, 9503,    0,10728,  232, 1010,
+  897,    0,  913, 9503,17096,    0, 1022,  918,  690,  951,
+    0,    0,17096,  642,16685,    0,    0,  645,17096,  577,
+  634,  989,   50,    0,    0,  745,    0, -234, 1013,   50,
+17096,17096,17096,  512,    0,  980,    0, 9503, 9503,    0,
+11784,   50,    0, 8577,  250,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0, 1069,    0,    0,    0,    0,18291,  577,
+  959,  958,17096,    0,  562,    0,  126,    0,    0,  316,
+  259,    0,    0,  923,10860, 8893,    0,    0,17096,17096,
+17096,17096,17096,17096,17096,17096,17096,17096,17096,12972,
+13104,13236, 2103,15577,13368,13500,13632,13764,13896,14028,
+14160,14292,14424,14556,14688,14820,14952,15084,15216,17644,
+17096,    0,    0,    0,    0,  745,    0,    0,    0,    0,
+18473,18473,    0,    0,   50,    0,    0,    0,    0,  552,
+  981,    0,    0,    0,    0,    0,    0,    0,  495,  841,
+  927,  943,    0,  562,  297,  297,    0,  486,  107,    0,
+  297,  998,    0, -193,19024,    0,    0,    0,    0, -145,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,  255,19054,    0,    0,    0,    0,  962,    0,
+    0, 1003,  788,    0, 1001,    0, 1011,  164,  642,    0,
+  138,    0,    0,    0,   50,16685, -115,    0, 1021,    0,
+    0,    0,  112,  168,    0,  811,  488,    0,    0, 1008,
+    0, 1041,    0, 1037,  983,    0,    0,  805,    0, 9167,
+  806,11018,  874,16548,    0, 9328,    0,    0,    0,    0,
+    0,    0,  174,  192,    0,    0,    0, -224,  642, -147,
+    0,    0,  645,    0,    0, 1042, 1044,    0,  195,   50,
+    0,  205,    0,    0,17096, 1126,    0,17096, 1129, 1050,
+    0, 1053, 1055,    0,18291,    0,    0,    0,  188,  962,
+    0,  -92, -272, 8577,    0,    0,    0,    0,    0,    0,
+  188,    0,    0, -235,    0,    0,    0,  645,    0,  577,
+   50, 9661,    0, 1056,    0, 1060,15348,    0, 1181, 1061,
+ 8577,    0,    0, 1014,    0,  962,   50,17233, 1015,    0,
+  562,  962,    0,  116,    0,17096,17096, 1067, 1186,    0,
+    0,  270,  146,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,17769,17769,    0,    0,
+ -234,    0,   50,  745,    0,  917,    0,  917,    0,11652,
+  209,    0,  209,    0,  755,    0,  755,    0,  755,    0,
+  755,    0,  636,    0,  636,    0,  338,    0,  671,    0,
+  697,    0,  686,    0,  694,    0,  -57, -180,    0,11018,
+ 1151,   50, 1152,   50,11018,11018, 1066,17096,    0,    0,
+  981,    0,   50,    0,  244,  562,    0,    0,    0,    0,
+ 9661,  486,    0, 1076, 1075,    0,    0,  707,  495,   -8,
+    0,    0,    0,    0,    0,    0, -185, 1077,    0, 1079,
+ 1081,    0,    0,    0,    0, 1083,10269, 1039,    0,  435,
+    0,    0,  687,    0,17233,    0, 1082,    0,    0,    0,
+  729,  141, 1086,    0, 1088, 1091, 1092,    0,    0,17096,
+    0,   50,    0,    0,  818,    0, 1094,    0,  256,    0,
+    0, 8419,    0, 8419, 9802,    0,15688,    0,    0,    0,
+ 9962,10094,  422,11018,    0,    7,  149,    0, 1031, 1046,
+    0,    0,    0,  834,    0,    0, 1099, 1098,    0,    0,
+    0,    0,    0, 1100,    0,    0,    0, 1106,  138, 4352,
+  642,    0,  642,    0,    0,    0,    0, 8419,    0,    0,
+ 8419,    0,17096,    0,17096, 9503,    0,    0,  642, 1103,
+  188,    0,    0,    0,17096,    0,    0,    0,    0,    0,
+    0,    0, 9503,    0,    0,   50,18291, 1135,    0,    0,
+    0,    0,    0,    0,    0,  962,  842,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,16411,    0,    0,    0,
+    0,    0, 9486,    0,    0,    0,    0,    0,    0,    0,
+    0,10252,    0, 9644, 1108,    0,    0, 1190,    0, 1191,
+    0,    0,    0,  932,    0, 1111,    0,    0,    0,    0,
+    0,    0,    0,    0,  486,    0,    0, 1068,    0,  107,
+    0,  486,    0,    0,  927, 1119, 1122, 1072, 1130, 1039,
+    0, 1121,    0, 1245, 1246,    0,    0,11018,    0,16822,
+ 1128,  729, 9661, 9503,    0,    0,  371, 1249, 1250,  219,
+ 1127,    0,    0,    0,17096,    0,17096, 1230,    0,    0,
+    0,16959,    0,  342,16959,  848,    0,    0,    0,    0,
+ 9030,    0, 1256,  745,11018, 1145, 9802, 1146,    0,17096,
+    0,   50,    0,    0,    0,  -87,    0,    0,    0, 1141,
+    0, 1174,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,  706,    0,    0,    0,    0,    0,    0, 9503,    0,
+    0,   50, -242, 1108,    0,11018,    0,11018,    0,  191,
+11018,    0,    0,    0,  503,    0,    0,    0, 1150,  927,
+    0,    0,11176,    0,    0,    0, 1155, 4512,    0, 1039,
+    0, 1039,    0, 1039,    0,    0,    0,    0,   50, 1156,
+ 1128,    0,    0,    0, -109, -125, 1154, 1157,    0,    0,
+    0,    0,    0, 1159, 9802, 1108, -180,17096,    0, 1166,
+ 8419,    0,    0,    0,    0,    0, 1158,    0,    0, 1170,
+    0,  874,    0,    0,    0,    0,    0, -201, 1169, 1171,
+    0, 1108, 1175,    0,    0,  188,    0, 1123, 1167,    0,
+    0,    0,    0,    0,11018, 1204,11018,    0,11018,    0,
+    0,17096,    0,    0, 1081,    0,  515,  739,    0,    0,
+    0,    0,  161,    0,    0,    0, 1185,    0,    0,    0,
+ 1172,    0,    0,    0,  682,    0, 1176, 1300, 1303,    0,
+    0, 1108, 1193, 1108, 1195,    0, 1187,    0,    0,16959,
+    0,    0,    0,17096,    0, 1194, -209,    0, 8101,    0,
+    0, 1313,    0,    0,  188,    0,17096, 9644,    0,    0,
+ 1223,    0,  964, 1197,    0, 1202,    0,    0,11176,  258,
+  164,    0,  852, 1199, 1205,16822, 1207,    0,17096,    0,
+    0,    0,    0,    0,    0, 8419,    0,   77,    0,    0,
+ 8577,    0,    0, 1290, 8419,    0, 1213,    0,11018,    0,
+    0,    0,    0,    0,17096,    0,    0,  495, 1214,  495,
+  164, 9503, 1199, 1253,    0, 1253,    0, 1199,    0,    0,
+    0,17096,    0, 8419,11334,    0,    0,    0,  906,    0,
+    0, 1240,11018,17096,    0,  495, 1220,    0, 1180,  991,
+    0,    0, 1225,    0, 1222,    0,  165,    0, 1229, 1183,
+    0, 1253,    0,    0, 1253,    0,    0,    0,    0, 1231,
+ 1094,    0,    0,    0,    0,    0, 1255,    0,   68, 1253,
+ 1349,    0, 1238,  495,    0,    0, 9503,    0,  106, 1241,
+    0, 1242,    0, 8419, 8577,11018,    0,    0,    0,    0,
+    0,    0, 1226, 1235,    0,    0,16548,    0, 2289,   66,
+  495, 1247,    0, 1248, 1260,11018, 1251,17096,    0,    0,
+ 1254,    0, 1257,    0,    0, 1243,    0,    0,    0,19054,
+    0, 1261,   66,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,  714,19054,    0,
+    0,    0,    0,    0,    0,    0,    0,    0, 1262,  495,
+    0,    0,    0,   50,    0, 1260,    0,    0,    0, 1259,
+ 2289, 8577,18159,    0,    0,  595,    0,    0,    0, 5312,
+    0,    0,   66,    0,    0,    0,    0, -272, 9503, 9503,
+  176, 9503,  477,  645, 1282,    0,  577, 1663,    0, 1317,
+    0,    0, 1235,    0,    0,    0,    0,    0,    0, 4029,
+ 1235, 1264,    0, -123, -120,    0, 9503, -118,    0, 9503,
+    0, 1215, 1265,    0,    0,   12,    0,  143, 4675,    0,
+ 1266, 1219,  153,  595, 5471,    0,17096,    0,    0,    0,
+    0,    0,   12,    0, 1271, 1221, 1269, 1267,    0, 1270,
+ 1224, 1275,  164, 1272, 1274,    0,    0, 1280, 1281, 1310,
+    0,  962,    0,  965,    0, 1296, 1292, 1235,  -62,    0,
+ 1288,    0,    0, 1301,    0, 1304, 1299, 1302,    0, 1306,
+    0,  164,  164,    0,    0,  164, 1305, 1309,    0,    0,
+    0,    0,    0,    0, 1314,  150,    0, 1316,  164, 1421,
+ 1318,  164,    0,  501,    0, 9802, 1273, 1308, 1306,    0,
+ 1321, 1322,  152, 1325,    0,    0,  164,16822, 1278, 1323,
+ 1314,    0,    0,19054,    0,  495,  495,    0, 1279, 1324,
+ 1316,    0, 1326,    0,17096, 1284, 1327, 1318,    0, 1332,
+  164,    0,  114,    0, 1328,    0,    0,    0,    0,    0,
+19054,    0,  152,  152,    0, 1333,    0,  -62,    0,    0,
+  409, 1338,19054,    0,19054,    0,    0, 9802, 1329,    0,
+    0,    0, 1337, 1301,    0,    0,    0, 1336,    0,  208,
+    0,    0,    0, 1253, 1017, 1343,    0,    0,  538,    0,
+    0,    0,    0,    0, 1398, 1451,    0,    0,    0,    0,
+    0,    0, 1344, 1345, 9802,    0,    0,    0,    0,  152,
+    0,    0,  580,  580,    0, 1253,    0,    0,    0, -143,
+ -143, 1340, 1354,    0,    0,    0,    0,    0,    0,16548,
+16548,    0,    0,    0,    0,    0,    0,    0,    0, 1360,
+ 1361,16822,    0,    0,    0,    0, 1358,    0,
   };
-  protected static readonly short [] yyRindex = {         3016,
-    0,    0, 7506, 3016,    0,    0,    0, 1718,    0,    0,
- 3202, 1926,    0,    0,    0,    0,    0, 3202,    0,    0,
-   43,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+  protected static readonly short [] yyRindex = {         1936,
+    0,    0, 8735, 1936,    0,    0,    0, 1736,    0,    0,
+ 3522, 1489,    0,    0,    0,    0,    0, 3522,    0,    0,
+   56,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0, 1737,    0,    0, 1737,    0,    0, 1737,    0,    0,
+ 1736, 3602, 2027,    0,    0,    0,    0,    0,    0,    0,
+    0,    0, 1371,    0,    0,    0,    0,    0,    0,    0,
+    0,10427,    0, 1363,    0,    0,    0, 1363,    0,    0,
+    0,    0,    0,    0, 3192,    0,    0,    0,    0,    0,
+    0,    0,    0,  190,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0, 5375,    0,    0,    0,
+    0,    0,    0,    0,    0,    0, 5788, 5311, 5699,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0, 5893, 6070, 4119, 6623, 7048, 7255, 7393, 7531,
+ 7669, 7807, 1311, 5470,    0,    0,    0,    0,    0,    0,
+   56,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,  238,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0, 3649,    0,  688,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0, 1725,    0,    0, 1725,    0,    0, 1725,    0,    0,
- 1718, 3245, 3085,    0,    0,    0,    0,    0,    0,    0,
-    0,    0, 1359,    0,    0,    0,    0,    0,    0,    0,
-    0,10104,    0, 1352,    0,    0,    0, 1352,    0,    0,
-    0,    0,    0,    0,  311,    0,    0,    0,    0,    0,
-    0,    0,    0,  292,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0, 4787,    0,    0,    0,
-    0,    0,    0,  345, 4880, 4222,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0, 1737,    0,    0,  307,
+    0,    0,    0,    0,    0,    0, 3712,  432, 3755,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0, 5036,
- 5104, 1033, 5577, 5917, 6121, 6257, 1476, 6461, 6597, 4967,
- 3954,    0,    0,    0,    0,    0,    0,   43,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,  303,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0, 3308,
-    0,  687,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0, 4351,    0,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0, 1725,    0,    0,   92,    0,    0,    0,
-    0,    0,    0, 3355,  604, 3422,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0, 3833,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0, 1373,    0,    0,    0,    0,    0,    0, 4351, 1366,
+    0,    0,    0,    0,    0,    0, 1366,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0, 2148,    0,  403,
+ 2851,    0,    0,    0,    0, 2982,    0, 2851,    0,    0,
+    0,    0,    0, 1371,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,  198,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0, 1361,    0,
-    0,    0,    0,    0,    0, 3833, 1354,    0,    0,    0,
-    0,    0,    0, 1354,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0, 2334,    0, 1262,  955, 2464,    0,
-    0,    0, 2594, 2464,    0,    0,    0,    0,    0, 1359,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,  205,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0, 1362, 2698,    0,    0, 1352,    0, 3833,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,  243,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0, 1581,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,  635,    0,    0,    0,    0,    0,    0,
-    0, 3465, 3508,    0,    0,    0,    0, 2188, 1725, 1725,
-    0, 7994, -184,    0, 1725, 1731,    0,    0,  180,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,  511,16578,    0,    0,
-    0,    0, 3833,    0,    0,    0,    0,    0,    0,    0,
-    0,16967,    0,    0,    0,    0,    0,    0,    0,  773,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,  268,
- 1489,    0,    0, -235, 1792,    0,    0, 1367,  602,    0,
-    0,    0,    0,  210,    0,    0, 4310, 1366,    0,    0,
-    0,  934,    0,    0,    0,    0,    0,    0,    0,    0,
-    0, 1373,    0, 1752,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0, 1362,    0,    0,
-    0,16157, 3833,    0, 6716,    0,  228,    0,    0,    0,
-    0,    0,    0,16157,    0,    0,    0,    0,    0,    0,
-   26,    0,  852,    0,    0,    0, 1369,    0,    0,    0,
-    0, 1354,    0,    0,    0, 3674,    0, 3833, 3674,    0,
- 3833, 4469,    0,    0,    0,    0,    0, -208,    0,    0,
-    0,    0,  286,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0, 5208,    0,
- 5276,    0,    0, 5425,    0, 5509,    0, 5645,    0, 5713,
-    0, 5781,    0, 5849,    0, 5985,    0, 6053,    0, 6189,
-    0, 6325,    0, 6393,    0, 6529,    0, 6653,    0,    0,
-  638,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,  635,    0,    0,    0,    0, 2188,    0,
-    0,    0,    0,17241,    0,    0,  844,    0,    0, 1325,
-14364,    0,    0,    0,    0,    0,    0,    0,  749,  683,
-    0,    0, 1372,    0,    0,    0,    0, 2953,    0,    0,
-    0,    0,    0,    0,10244,    0,    0,    0,  843,    0,
-    0,    0,17291,17114,    0,    0,  860,  863,  885,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,  774,    0,
-    0,    0,    0,    0,    0,    0,    0,    0, 1377,    0,
-    0,    0,    0,    0, 3740,    0,    0,  236,    0,  112,
- 3992,    0,    0,    0,    0,    0,    0,    0, 1374,    0,
-    0,    0,    0,    0, 1379,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,  369,  608,    0,    0,
-    0,    0,    0, 1376,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,16157,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,  649,    0,    0,    0,    0,    0,    0,
-    0,    0, -179,    0,  505,    0,    0,    0,    0,    0,
-    0,    0,17291,    0,    0,    0,    0, -184,    0, 8151,
-    0,    0, 1380,    0,  784,    0,    0,    0,    0, 1382,
-    0, 1333, 1335,    0,    0,    0,    0,    0, 1381,17315,
-    0,    0,    0,    0,17146,    0,    0,    0,  886,    0,
-    0,    0,    0,    0,    0, 2062,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
- 4151,    0, 4628, 1387,    0,    0,    0,    0, 1384,    0,
-    0,    0,    0,    0,  321,    0,    0,    0,    0,  886,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,  659,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,  889,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0, 1383,    0,    0,    0,    0,    0,  897,  904,
-    0,    0,    0,    0,    0,    0,    0, 1386,  730, 1388,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0, 4310,    0,    0,    0,    0,    0, 1392,    0,
-    0,    0,  321,    0,    0,  959,    0, 1386,    0,    0,
-    0,16157,    0,  656,  694,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
- 1372,    0,14203,    0,    0,    0,    0,    0,17366,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-  791,    0,  809,    0,    0,    0,    0,  991,    0,  813,
- 1394,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0, 1395,    0,    0,    0,    0,  196,    0,    0,    0,
-    0,16157,    0,    0,    0,    0,    0,    0,    0,  360,
-  543,    0,    0,    0,    0,    0,17409,16967,    0,  232,
-  473,  513,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0, -152,    0,    0,  966,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,17495,    0, -215,16967,    0,  531, 1412,
-    0, 1412,    0,  473,    0,    0,    0,    0,    0,    0,
- 1408,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,17538,    0,    0,    0,14667,    0,    0, 1421,    0,
-    0,    0,  494,    0,    0,    0,    0,  536,    0,    0,
- 1412,    0,    0,    0,    0,    0, 1418,    0,    0,    0,
-    0,    0,    0,    0, 3159, 1415,  539,    0,    0,  -16,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
- 1424,    0,    0,    0,    0,    0,    0,    0,    0, 2867,
-    0,    0, 1366,    0,    0,14469,14753,    0,    0,    0,
-  748,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,  446,    0,    0,16749,    0,    0,14568,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,16817,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,14847,    0,    0,    0,    0,    0,  748,
-    0,    0,    0,    0,    0,  511,    0,    0,    0,    0,
-    0,    0,  511,    0,    0,14469,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,14959,  518,    0,14889,    0,
-    0,    0,15021,    0, 2867,    0,    0,    0,    0, 2867,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,  395,    0, 1429,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,  869,
-    0,  697,    0,    0,    0,    0,    0,    0,    0,16967,
-  907,    0,    0,    0,    0,    0,    0, 1441,    0,  174,
-    0,    0,    0,    0, 2867,    0,    0,  922,    0,    0,
-    0,    0,    0,    0,    0,    0, 1440,    0,16967,16967,
-    0,16999,    0,    0,    0,    0,    0,    0,    0, 1442,
-17732,    0, 1443,16967,16293, 1445,16967,    0,    0,    0,
-    0,    0,    0, 1457,    0,    0,    0, 1238,    0,    0,
-    0,16967,    0,    0,    0, 1458,    0,    0,  179,    0,
-17656,17694,    0,    0,    0, 1459,    0,    0,    0,    0,
-    0,    0, 1460,    0,    0,16967,    0,  585,    0,  933,
-    0,    0,    0,    0,    0,  972,    0,17580,17618,    0,
-    0,    0,    0,    0,    0,    0,    0, 1447,    0, 1534,
-    0,    0,    0,  947,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,  568,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0, 1238,16465,17452,    0,  568,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0, 1366, 1366,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0, 1372, 3087,
+    0,    0, 1363,    0, 4351,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,  278,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0, 2384,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+ 1852,    0,    0,    0,    0,    0,    0,    0, 3798, 3861,
+    0,    0,    0, 1531, 1737, 1737,    0, 8910, -206,    0,
+ 1737, 1744,    0,    0,   84,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,  479,17919,    0,    0,    0,    0, 4351,    0,
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+    0,    0,    0,    0,    0,  233, 1047,    0,    0,  230,
+ 1928,    0,    0, 1378,  513,    0,    0,    0,    0,  215,
+    0,    0, 4831, 1376,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0, 1384,    0, 2553,
+    0,    0,  222,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0, 1372,    0,    0,    0,17370, 4351,
+    0, 7940,    0,  225,    0,    0,    0,    0,    0,    0,
+17370,    0,    0,    0,    0,    0,    0,   60,    0,  703,
+    0,    0,    0, 1381,    0,    0,    0,    0, 1366,    0,
+    0,    0,    0, 4191,    0, 4351,    0,    0, 4030,    0,
+ 4351, 4991,    0,    0,    0,    0,    0, -202,    0,    0,
+    0,    0,  313,    0,    0,    0,    0,    0,    0,    0,
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+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+ 5535, 5640, 6142, 5965,    0, 6247,    0, 6319,    0,    0,
+ 6469,    0, 6554,    0, 6692,    0, 6761,    0, 6830,    0,
+ 6899,    0, 7117,    0, 7186,    0, 7324,    0, 7462,    0,
+ 7600,    0, 7738,    0, 7876,    0,    0,  749,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+ 1852,    0,    0,    0,    0, 1531,    0,    0,    0,    0,
+    0,11035,    0,    0,  817,    0,    0, 1339,15851,    0,
+    0,    0,    0,    0,    0,    0,  781,  774,    0,    0,
+ 1385,    0,    0,    0,    0, 1820,    0,    0,    0,    0,
+    0,    0,11492,    0,    0,    0,  845,    0,    0,    0,
+11193,18364,    0,    0,  881,  920,  937,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,  870,    0,    0,    0,
+    0,    0,    0,    0,    0,    0, 1386,    0,    0,    0,
+    0,    0, 6961,    0,    0,    0,  261,    0,  117, 4511,
+    0,    0,    0,    0,    0,    0,    0, 1387,    0,    0,
+    0,    0,    0, 1388,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+17370,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0, 4351,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,  674,    0,    0,    0,    0,    0,
+    0,    0,    0, -169,    0,  576,    0,    0,    0,    0,
+    0,    0,    0,    0,11193,    0,    0,    0,    0, -206,
+    0, 9345,    0,    0, 1391,    0,  873,    0,    0,    0,
+    0, 1395,    0, 1346, 1348,    0,    0,    0,    0,    0,
+ 1382,11351,    0,    0,    0,    0,18396,    0,    0,    0,
+  939,    0,    0,    0,    0,    0,    0, 2721,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0, 4671,    0, 5151, 1399,    0,    0,    0,
+    0, 1396,    0,    0,    0,  939,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,  771,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,  940,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+ 1394,    0,    0,    0,    0,    0,  957,  960,    0,    0,
+    0,    0,    0,    0,    0, 1401,  761, 1400,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0, 4831,    0,    0,    0,    0,    0, 1403,    0,    0,
+    0, 1401,    0,    0,    0,17370,    0,  752,  762,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0, 1385,    0,15689,    0,    0,    0,
+    0,    0,18521,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,  793,    0,  798,    0,    0,    0,
+    0, 1402,    0,  895, 1404,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0, 1407,    0,    0,    0,
+    0,  202,    0,    0,17370,    0,    0,    0,    0,    0,
+    0,    0,  113,  678,    0,    0,    0,    0,    0,18592,
+18191,    0,  386,  511,  449,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+ -208,    0,    0, 1020,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,18748,    0, -253,
+18191,    0,  522, 1410,    0, 1410,    0,  511,    0,    0,
+    0,    0,    0,    0, 1406,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,18791,    0,    0,    0,16125,
+    0,    0, 1411,    0,    0,    0,  364,    0,  532,    0,
+    0,  606,    0,    0, 1410,    0,    0,    0,    0,    0,
+ 1409,    0,    0,    0,    0,    0,    0,    0, 3479, 1412,
+  493,    0,    0,  333,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0, 1414,    0,    0,    0,    0,    0,
+    0,    0,    0, 3363,    0,    0, 1376,    0,    0,15957,
+16209,    0,    0,    0,  767,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,  617,    0,    0,    0,18091,
+    0,    0,16041,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0, 5152,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,16293,
+    0,    0,    0,    0,    0,  767,    0,    0,    0,    0,
+    0,  198,  479,    0,    0,    0,    0,    0,    0,  479,
+    0,    0,15957,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0, 4830,  507,    0,16335,    0,    0,    0,
+ 4990,    0, 3363,    0,    0,    0,    0,    0,    0,    0,
+ 3363,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,  257,    0,  584,    0,  647,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,  824,    0,  692,    0,    0,    0,    0,    0,
+    0,    0,18191,  947,    0,    0,    0,    0,    0,    0,
+    0, 1390,    0,  438,    0,    0,    0, 3363,    0,    0,
+  963,    0,    0,    0,    0,    0,    0,    0,    0, 1417,
+    0,18191,18191,    0,    0,18259,    0,    0,    0,    0,
+    0,    0,    0,    0, 1418,15719,    0, 1420,18191,17507,
+ 1425,18191,    0,    0,    0,    0,    0,    0, 1426,    0,
+    0,    0,18984,    0,    0,    0,18191,    0,    0,    0,
+ 1427,    0,    0,  424,    0,18914,18954,    0,    0,    0,
+ 1428,    0,    0,    0,    0,    0,    0, 1430,    0,    0,
+18191,    0,  716,    0,  968,    0,    0,    0,    0,    0,
+ 1029,    0,18834,18874,    0,    0,    0,    0,    0,    0,
+    0,    0, 1469,    0, 1525,    0,    0,    0,  978,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,  611,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,18984,
+    0,    0,18634,18672,    0,  611,    0,    0,    0,    0,
+    0,15498,    0,    0,    0,    0,    0,    0,    0, 1376,
+ 1376,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,
   };
   protected static readonly short [] yyGindex = {            0,
-    0, 1766,    0,    0,    0,   -3,  -15, -181,  -41,  -34,
-    0, 1826, 1834,  342,    0,    4,    0,    0,    0,    0,
-    0,    0,-1219, -767, -229, -675,    0,    0,    0,    0,
-    0, -226,    0,    0,    0,  823,    0,  936,    0,    0,
-    0,    0,  671,  677,  -17, -216,    0,  -47,    0, -481,
-  478,    0,  527, -699, -582, -579, -561, -530, -509, -506,
- -504,    0,-1153,    0,-1274,    0,   14,    0,    0,    0,
-  632,-1183,    0,    0,    0,  -14,  315,    0,    0,    0,
-  353,-1146,    0, -280, -300, -527,    0,    0,    0, -972,
-  305,    0,    0, -532,    0,    0,  373,    0,    0,  346,
-    0,    0,  379,    0, -660, -858,    0,    0,    0,    0,
-    0, -435,  -10,    0,    0,  937,  945,  949, 1118, -570,
-    0,    0, -305,  964,  470,    0, -892,    0,    0,    0,
-    0,    0,    0,    0,    0,  270,    0,    0,    0,    0,
-    0,    0,    0,    0,  521,    0,    0,    0,    0, -290,
-  462,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-  545,    0, -523,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,  299,    0,    0,  380,    0,    0,  383,  388,
-  306,    0,    0,    0,    0,    0,    0,    0,    0,  620,
-    0,    0,    0,    0,  -69,    0,  316,  -24,    0,    0,
-  454,    0, -424,    0,  999,    0, 1355, -299, -274,  -62,
-  909,    0,  625,    0,  -35,  165,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0, -259,    0,   37,    0, -355,
-    0, -275,    0,    0,    0,  958,  960, -306, -128, 1131,
-    0, 1042,    0, 1313, 1535, 1191,    0,    0,  849, 1869,
-    0,    0,    0,    0, 1163,    0,    0,    0,    0,    0,
- -516, 1605,    0,    0,    0,    0,    0, 1390,  939,  929,
-  792,  944, 1528, 1531, 1527, 1537, 1539,    0, 1572,    0,
-    0,    0, 1151, 1420, -562,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0, -307,  814,    0, -681,    0,
-    0,    0,    0,    0, -475,    0,  745,    0,  637,    0,
-  715,    0,    0,    0,    0,    0,  858, -559,  -11, -329,
-   -1,    0, 1847,    0,   48,    0,   56,   73,   81,   83,
-  125,  160,  167,  182,  207,  252,    0, -716,    0,    2,
-    0,    0,  952,    0,  873,    0,    0,    0,    0,  850,
- -927,  926, -919,    0,  978, -493,    0,    0,    0,    0,
-    0,    0,  881,    0,  870,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-  803,    0,    0,    0,    0,    0,    0,    0,    0,  -42,
-    0, 1481,    0,  836,    0,    0, 1058,    0,    0,    0,
-    0,    0,    0, -175,    0,    0,    0,    0,    0, 1602,
- 1344,    0,    0,    0,    0, 1603,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,  689,    0,    0,    0,    0,
-    0,    0,    0,    0,  810,    0,    0,    0,    0,    0,
-    0,   19, 1154,    0,    0,    0, 1155,
+    0, 1757,    0,    0,    0,   -1,  -16, -178,  -44,  -41,
+    0, 1797, 1806,  103,    0,    6,    0,    0,    0,    0,
+    0,    0,-1157, -774, -216, -708,    0,    0,    0,    0,
+    0, -221,    0,    0,    0,  776,    0,  883,    0,    0,
+    0,    0,  630,  632,  -17, -227,    0,  -47,    0, -112,
+  430,    0,  487, -587, -577, -576, -541, -537, -525, -516,
+ -503,    0,    0,-1152,    0,-1187,    0,  434,-1258,    0,
+    3,    0,    0,    0,  596,-1183,    0,    0,    0,   -3,
+  267,    0,    0,    0,  306,-1151,    0, -281, -301, -354,
+    0,    0,    0, -985,  262,    0,    0, -529,    0,    0,
+  320,    0,    0,  299,    0,    0,  401,    0, -630, -856,
+    0,    0,    0,    0,    0, -404,  335,-1396,  -10,    0,
+    0,    0,  893,  898,  900, 1089, -572,    0,    0, -336,
+  902,  436,    0, -905,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,  234,    0,    0,
+    0,    0,    0,    0,    0,    0,  496,    0,    0,    0,
+ -315,  423,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,  505,    0, -531,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,  246,    0,    0,  331,    0,    0,  336,
+  340,  266,    0,    0,    0,    0,    0,    0,    0,    0,
+  598,    0,    0,    0,    0,  -86,    0,  135, -373, -304,
+ 1277,    0,  421,    0, -349,    0,  966,    0, 1577,  148,
+ -305, -274,  -81,  203, 1232,    0,  601,    0,  -21,  509,
+ 1495,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0, -267,
+    0,   28,    0, -352,    0, -280,    0,    0,    0,  931,
+ -927, -313, -132,  554,    0, 1026,    0, 1276, -343, 1160,
+    0,    0,  828, 1851,    0,    0,    0,    0, 1137,    0,
+    0,    0, 1593,    0,    0,    0,    0,    0, 1627,  986,
+  987,    0,  946,    0,  812,  984, 1514, 1515, 1513, 1516,
+ 1517,    0, 1512,    0,    0,    0, 1084, 1364, -569,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0, -306,
+  748,    0, -444,    0,    0,    0,    0,    0, -475,    0,
+  681,    0,  573,    0,    0,    0,    0,    0,  787, -563,
+  -11, -334,   -7,    0, 1796,    0,   48,    0,   85,   91,
+  111,  128,  157,  173,  175,  181,  193,  194,    0, -662,
+    0,  -23,    0,    0,  882,    0,  804,    0,    0,    0,
+    0,  784, -959,  862, -931,    0,  905, -489,    0,    0,
+    0,    0,    0,    0,  800,    0,  802,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,  724,    0,    0,    0,    0,    0,    0,    0,
+    0,  -31,    0, 1416,  763,    0,    0,  985,    0,    0,
+    0,    0,    0,    0, -176,    0,    0,    0,    0,    0,
+ 1529, 1283,    0,    0,    0,    0, 1532,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,  607,    0,    0,    0,
+    0,    0,    0,    0,    0,  731,    0,    0,    0,    0,
+    0,    0,   35, 1054,    0,    0,    0, 1062,
   };
   protected static readonly short [] yyTable = {           110,
-   18,  541,  190,  544,  470,  156,  112,  804,  452,  491,
-  235,  513,  743,  451,  798,  157,  765,  236,  562,   44,
-  590,  296,  324,  193,  261,  539,  537,  850, 1094,  425,
-  573,  851,  495,  633,  855,  315, 1226,  965, 1260,  525,
-  330,  335, 1029, 1148,  382,  342,  390,  684,  254,  846,
- 1366,  383,  911,  391,  862, 1149,  307,  946,  568,  947,
-  314,  262, 1247,  229,  161,  379,  231,  605, 1373,  316,
-  770,  319,  162,  331,  336,  251, 1013, 1289,  351,   14,
- 1316,  318,  606,  882, 1130,  191, 1099, 1087,  506,  163,
- 1404,  362, 1297,  736,  375,   20,  507,  164,  265,  165,
- 1149,  878,  289,  290,  291, 1132,  297,  298, 1427,   51,
-  979,  311,  312,  981,  251,  861, 1577,  552,  320,  852,
-  322,   51,  326, 1429,  726,  427, 1247,  338,  339, 1435,
- 1138,  592,  516,  380,  814, 1587,  368,  318,  516, 1405,
-  110,  166,  900, 1588,   95,  533,  156,  112,  235,  508,
-  727,  389,  326, 1396,  692,  453,  157,    1,    2, 1013,
- 1138,  853,  323,  684, 1013,  684, 1013,  455, 1578, 1013,
- 1013,  495, 1013, 1013,  957, 1424,  167,  294,  263,    6,
- 1425,  116,  728,  168,  369,  459,  460,  369,  593,  197,
-  252,  294,  469,  516, 1013, 1614,  252,  880,  169,  453,
-  493,  496,   51,  340, 1589,  161, 1478,  370,  883, 1150,
-  370,  885, 1057,  162,  500,  861,  890,  891, 1099,  879,
-  684,  371,  470,  170,  116,   95,  491,  790,  116,  252,
-  163,  494,  295,   51, 1546, 1477,  796,  499,  164,  253,
-  165,   15,  461,  467,  948,  253,  295,  192,   95, 1013,
-  501,  524,  252,  261, 1150,  737,  534,  590,  535,    2,
-  252, 1570,  561,  261,  569,  820,  565, 1133,  171,  861,
- 1428,  570,  605, 1580,  512, 1581,  511,  987,  253,  516,
-  518,  376,  166,  567,  590, 1430,  729,  606,  572,  294,
-  509, 1436,  958,  320,  548, 1233,  547,  389,  264, 1029,
-  583,  253,  557,  455,  559,  292,   95, 1294,  516,  253,
-  558,   16,  536,  293,  606, 1615,  881,  167, 1304, 1215,
-  575,  576,  116,  560,  168,    3,    4,    5,    6,  580,
-  581, 1479,  868,  618,  613,  195,  621,  538,  589,  169,
-  496,  496,  466, 1173,  295,  341, 1145,  362,  591,  455,
- 1564,  328, 1282,  556,  615,  596, 1542,  406, 1251,  612,
- 1047,  810,  198,  504,  170,  773,  775, 1029,   20,  739,
-  494,  630,  806,  740,  637,  638,  639,  640,  641,  642,
-  643,  644,  645,  646,  647, 1591,  694,  696,  376,  808,
-  700,  655,  657,  407,  198,  376, 1104,  376,  247,  376,
-  294,   51,  248,  195,  195,   49,  690,  826,  901,  171,
-  235, 1406,  751,  432, 1234, 1611,  829,  453, 1055,  695,
-  697,  720,  606, 1443,  195,  841,  719, 1295,  721,  362,
-  362, 1077,  933,  710,  741,   43,    6, 1305, 1324, 1508,
-  252,  705, 1535,  376, 1037,   55,  869,  505,  820, 1061,
-  747,  705,  249,  116,  938,  295,  705,  708,  362, 1085,
-  705,  763,  362,  771,  362,  362,  362,  362,  744, 1565,
- 1283,  730,  362,  408,  409,  705, 1232,  711,  712, 1029,
- 1074,  774,  776,  724, 1236, 1029,  116,  936,  807,  253,
-  496, 1105,  761,  705,  491,  376,  433,  752, 1221, 1449,
-  847,  434,  705,  435,  200,  809,  436,  437,  819,  438,
-  439,  764,  828, 1263,  116,  195,  195,  994,  793,  525,
-  630,  705,  802,  827, 1137,  233, 1100,  491, 1102, 1163,
-  495, 1107,  830,  954, 1056,  294,   95, 1255, 1444,  233,
-  362,  762,  813,  377,  362,  233,  347,  362,  831,  362,
-  605,  233,  233,  833,  362,  233,  854,  812,  845,  818,
-  875,  848,  936,  936,  422,  606,  369, 1158,  368, 1159,
-  693,  842,  753, 1309,  294,  589,  423,  453,  455,  294,
-  195, 1465,  944,  842,  368,  591,  440,  530,  811,  370,
-  616,  531, 1450,  864,  955,  754,  866,  867,  693, 1202,
-  617,  201,  589,  454,  378,  812,  195, 1345,  870,  870,
- 1496, 1497,  591, 1499,  466, 1016,  369,  876,  195, 1166,
-  945, 1168,  953, 1169, 1045, 1518,  195, 1040, 1525,  295,
- 1326, 1344,  369,  753,  619,  812,  294,  850,  453,  370,
-  606,  812,  432, 1541,  620, 1572, 1573,  887,  812,  889,
-  352,  790, 1326,  371, 1345,  370,  754,  467,  897,  195,
-  195,  959,  996,  294,  454,  800,  812, 1563,  252,  371,
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-  793,  793,  905,  893,  899,  195, 1072, 1076,  195,  347,
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+    0,  650,  650,    0,    0,  653,    0,    0,    0,    0,
+    0,    0,  650,  650,    0,    0,    0,    0,    0,  652,
+    0,    0,    0,    0,  652,  650,  652,  652,  652,  652,
+  652,  652,  652,  652,  652,  652,  652,    0,    0,    0,
+    0,  650,    0,    0,    0,    0,    0,    0,    0,  652,
+    0,  652,    0,  652,    0,  652,  652,  652,    0,    0,
+    0,    0,    0,    0,    0,    0,  652,    0,    0,    0,
+    0,  652,    0,    0,  655,    0,    0,    0,    0,    0,
+    0,  652,  652,    0,    0,    0,    0,    0,  653,    0,
+    0,    0,    0,  653,  652,  653,  653,  653,  653,  653,
+  653,  653,  653,  653,  653,  653,    0,    0,    0,    0,
+  652,    0,    0,    0,    0,    0,    0,    0,  653,    0,
+  653,    0,  653,    0,  653,  653,  653,    0,    0,    0,
+    0,    0,    0,    0,    0,  653,    0,    0,    0,    0,
+  653,    0,    0,  656,    0,    0,    0,    0,    0,    0,
+  653,  653,    0,    0,    0,    0,    0,  655,    0,    0,
+    0,    0,  655,  653,  655,  655,  655,  655,  655,  655,
+  655,  655,  655,  655,  655,    0,    0,    0,    0,  653,
+    0,    0,    0,    0,    0,    0,    0,  655,    0,  655,
+    0,  655,    0,  655,  655,  655,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,  655,
+    0,    0,  658,    0,    0,    0,    0,    0,    0,  655,
+  655,    0,    0,    0,    0,    0,  656,    0,    0,    0,
+    0,  656,  655,  656,  656,  656,  656,  656,  656,  656,
+  656,  656,  656,  656,    0,    0,    0,    0,  655,    0,
+    0,    0,    0,    0,    0,    0,  656,    0,  656,    0,
+  656,    0,  656,  656,  656,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,  656,    0,
+    0,  659,    0,    0,    0,    0,    0,    0,  656,  656,
+    0,    0,    0,    0,    0,  658,    0,    0,    0,    0,
+  658,  656,  658,  658,  658,  658,  658,  658,  658,  658,
+  658,  658,  658,    0,    0,    0,    0,  656,    0,    0,
+    0,    0,    0,    0,    0,  658,    0,  658,    0,  658,
+    0,  658,  658,  658,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,  658,    0,    0,
+    0,  364,    0,    0,    0,  836,    0,    0,  658,    0,
+    0,    0,    0,    0,  659,    0,    0,    0,    0,  659,
+  658,  659,  659,  659,  659,  659,  659,  659,  659,  659,
+  659,  659,    0,    0,    0,    0,  658,  364,    0,    0,
+    0,    0,    0,    0,  659,    0,  659,    0,  659,    0,
+  659,  659,  659,  836,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,  659,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,  659,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,  659,
+    0,    0,    0,    0,    0,    0,  364,    0,    0,    0,
+    0,    0,  364,  364,    0,  659,    0,    0,  364,  364,
+    0,  364,    0,  364,    0,  836,  364,    0,  364,  364,
+    0,  364,  364,  364,  364,  364,  364,  364,  364,  364,
+  364,    0,  364,  364,  364,  364,  364,  364,  364,  364,
+  364,  364,  364,  364,  364,  364,  364,  364,  364,  364,
+  364,  364,  364,  364,    0,    0,  591,    0,  364,    0,
+  364,    0,    0,  364,   57,   24,   58,   25, 1164,  364,
+   26,   59,    0,   60,   61,   27,   62,   63,   64,   28,
+    0,    0,    0,    0,    0,   65,    0,   66,   30,   67,
+   68,   69,   70,    0,    0,   32,    0,    0,    0,   71,
+   33,    0,   72,   73,   34,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,   74,    0,   36,    0,   37,   75,
+    0,    0,   38,    0,   76,   77,   78,   79,   80,   81,
+   39,   40,   82,   83,   41,   84,    0,   85,    0,    0,
+   86,   87,    0,    0,   88,   89,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,   90,
+   91,   92,   93,   94,    0,    0,    0,    0,   95,    0,
+    0,    0,   96,    0,    0,    0,    0,   97,   98,   99,
+  100,  101,    0,    0,    0,  102,    0,  103,    0,    0,
+    0,    0,    0,  104,  105,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,  269,    0,    0,
-    0,  106,  107,  108,  109,   57,   24,   58,   25,    0,
-    0,   26,   59,    0,   60,   61,   27,   62,   63,   64,
-   28,    0,    0,    0,    0,    0,   65,    0,   66,   30,
-   67,   68,   69,   70,    0,    0,   32,    0,    0,    0,
-   71,   33,    0,   72,   73,   34,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,   74,    0,   36,    0,   37,
-   75,    0,    0,   38,    0,   76,   77,   78,   79,   80,
-   81,   39,   40,   82,   83,   41,   84,    0,   85,    0,
-    0,   86,   87,    0,    0,   88,   89,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-   90,   91,   92,   93,   94,    0,    0,    0,   95,    0,
+    0,    0,    0,    0,    0,    0,   56,    0,  106,  592,
+  108,  109,    0, 1165,   57,   24,   58,   25,    0,    0,
+   26,   59,    0,   60,   61,   27,   62,   63,   64,   28,
+    0,    0,    0,    0,    0,   65,    0,   66,   30,   67,
+   68,   69,   70,    0,    0,   32,    0,    0,    0,   71,
+   33,    0,   72,   73,   34,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,   74,    0,   36,    0,   37,   75,
+    0,    0,   38,    0,   76,   77,   78,   79,   80,   81,
+   39,   40,   82,   83,   41,   84,    0,   85,    0,    0,
+   86,   87,    0,    0,   88,   89,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,   90,
+   91,   92,   93,   94,    0,    0,    0,    0,   95,    0,
     0,    0,   96,    0,    0,    0,    0,   97,   98,   99,
   100,  101,    0,    0,    0,  102,    0,  103,    0,    0,
     0,    0,    0,  104,  105,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,  584,    0,    0,    0,  106,  107,
+    0,    0,    0,    0,  272,    0,    0,    0,  106,  107,
   108,  109,   57,   24,   58,   25,    0,    0,   26,   59,
     0,   60,   61,   27,   62,   63,   64,   28,    0,    0,
     0,    0,    0,   65,    0,   66,   30,   67,   68,   69,
@@ -11724,1426 +12077,1474 @@ void case_1053()
    82,   83,   41,   84,    0,   85,    0,    0,   86,   87,
     0,    0,   88,   89,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,   90,   91,   92,
-   93,   94,    0,    0,    0,   95,    0,    0,    0,   96,
-    0,    0,    0,    0,   97,   98,   99,  100,  101,    0,
-    0,    0,  102,    0,  103,    0,    0,    0,    0,    0,
-  104,  105,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0, 1024,    0,    0,    0,  106,  585,  108,  109, 1024,
- 1024, 1024, 1024,    0,    0, 1024, 1024,    0, 1024, 1024,
- 1024, 1024, 1024, 1024, 1024,    0,    0,    0,    0,    0,
- 1024,    0, 1024, 1024, 1024, 1024, 1024, 1024,    0,    0,
- 1024,    0,    0,    0, 1024, 1024,    0, 1024, 1024, 1024,
-    0,    0,    0,    0,    0,    0,    0,    0,    0, 1024,
-    0, 1024,    0, 1024, 1024,    0,    0, 1024,    0, 1024,
- 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024,
- 1024,    0, 1024,    0,    0, 1024, 1024,    0,    0, 1024,
- 1024,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0, 1024, 1024, 1024, 1024, 1024,    0,
-    0,    0, 1024,    0,    0,    0, 1024,    0,    0,    0,
-    0, 1024, 1024, 1024, 1024, 1024,    0,    0,    0, 1024,
-    0, 1024,    0,    0,    0,    0,    0, 1024, 1024,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,  625,    0,
-    0,    0, 1024, 1024, 1024, 1024,   57,   24,    0,   25,
-    0,    0,   26,  256,    0,  968,    0,   27,   62,   63,
-    0,   28,    0,    0,   24,    0,   25,   65,    0,   26,
-   30,    0,    0,    0,   27,    0,    0,   32,   28,    0,
-    0,    0,   33,    0,   72,   73,   34,   30,  626,    0,
-    0,    0,    0,    0,   32,  627,    0,    0,   36,   33,
-   37,   75,    0,   34,   38,    0,    0,   77,    0,   79,
-    0,   81,   39,   40,  257,   36,   41,   37,    0,    0,
-    0,   38,    0,  628,    0,    0,   88,   89,    0,   39,
-   40,    0,    0,   41,    0,    0,  327,    0,    0,    0,
-    0,   90,   91,   92,   93,   94,    0,    0,    0,    0,
-    0,    0,    0,   96,    0,    0,  629,    0,    0,   98,
-   99,  100,  101,    0,    0,    0,  102,    0,  103,    0,
-    0,    0,    0,    0,  104,  105,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,  800,    0,    0,    0,  106,
-  107,  108,  109,   57,   24,    0,   25,    0,    0,   26,
-  256,    0, 1121,    0,   27,   62,   63,  374,   28,    0,
-    0,   24,    0,   25,   65,    0,   26,   30,    0,    0,
-    0,   27,    0,    0,   32,   28,    0,    0,    0,   33,
-    0,   72,   73,   34,   30,    0,    0,    0,    0,    0,
-    0,   32,    0,    0,    0,   36,   33,   37,   75,    0,
-   34,   38,    0,    0,   77,    0,   79,    0,   81,   39,
-   40,  257,   36,   41,   37,    0,    0,    0,   38,    0,
-   87,    0,    0,   88,   89,    0,   39,   40,    0,    0,
-   41,    0,    0,  327,    0,    0,    0,    0,   90,   91,
-   92,   93,  305,    0,    0,    0,  540,  801,    0,    0,
-   96,    0,    0,    0,    0,    0,   98,   99,  100,  101,
+   93,   94,    0,    0,    0,    0,   95,    0,    0,    0,
+   96,    0,    0,    0,    0,   97,   98,   99,  100,  101,
     0,    0,    0,  102,    0,  103,    0,    0,    0,    0,
     0,  104,  105,    0,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,  995,    0,    0,    0,  106,  306,  108,  109,
-   57,   24,    0,   25,    0,    0,   26,  256,    0,    0,
-    0,   27,   62,   63,  374,   28,    0,    0,  182,    0,
-  182,   65,    0,  182,   30,    0,    0,    0,  182,    0,
-    0,   32,  182,    0,    0,    0,   33,    0,   72,   73,
-   34,  182,  626,    0,    0,    0,    0,    0,  182,  627,
-    0,    0,   36,  182,   37,   75,    0,  182,   38,    0,
-    0,   77,    0,   79,    0,   81,   39,   40,  257,  182,
-   41,  182,    0,    0,    0,  182,    0,  628,    0,    0,
-   88,   89,    0,  182,  182,    0,    0,  182,    0,    0,
-  182,    0,    0,    0,    0,   90,   91,   92,   93,   94,
-    0,    0,    0,    0,    0,    0,    0,   96,    0,    0,
-    0,    0,    0,   98,   99,  100,  101,    0,    0,    0,
-  102,    0,  103,    0,    0, 1049,    0,    0,  104,  105,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,  800,
-    0,    0,    0,  106,  107,  108,  109,   57,   24,    0,
-   25,    0,    0,   26,  256,    0,    0,    0,   27,   62,
-   63,  182,   28,    0,    0,  182,    0,  182,   65,    0,
-  182,   30,    0,    0,    0,  182,    0,    0,   32,  182,
-    0,    0,    0,   33,    0,   72,   73,   34,  182,    0,
-    0,    0,    0,    0,    0,  182,    0,    0,    0,   36,
-  182,   37,   75, 1001,  182,   38,    0,    0,   77,    0,
-   79,    0,   81,   39,   40,  257,  182,   41,  182,    0,
-    0,    0,  182,    0,   87,    0,    0,   88,   89,    0,
-  182,  182,    0,    0,  182,    0,    0,  182,    0,    0,
-    0,    0,   90,   91,   92,   93,  305,    0,    0,    0,
-  540,    0,    0,    0,   96,    0,    0,    0,    0,    0,
+    0,    0,  591,    0,    0,    0,  106,  107,  108,  109,
+   57,   24,   58,   25,    0,    0,   26,   59,    0,   60,
+   61,   27,   62,   63,   64,   28,    0,    0,    0,    0,
+    0,   65,    0,   66,   30,   67,   68,   69,   70,    0,
+    0,   32,    0,    0,    0,   71,   33,    0,   72,   73,
+   34,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+   74,    0,   36,    0,   37,   75,    0,    0,   38,    0,
+   76,   77,   78,   79,   80,   81,   39,   40,   82,   83,
+   41,   84,    0,   85,    0,    0,   86,   87,    0,    0,
+   88,   89,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,   90,   91,   92,   93,   94,
+    0,    0,    0,    0,   95,    0,    0,    0,   96,    0,
+    0,    0,    0,   97,   98,   99,  100,  101,    0,    0,
+    0,  102,    0,  103,    0,    0,    0,    0,    0,  104,
+  105,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+ 1049,    0,    0,    0,  106,  592,  108,  109, 1049, 1049,
+ 1049, 1049,    0,    0, 1049, 1049,    0, 1049, 1049, 1049,
+ 1049, 1049, 1049, 1049,    0,    0,    0,    0,    0, 1049,
+    0, 1049, 1049, 1049, 1049, 1049, 1049,    0,    0, 1049,
+    0,    0,    0, 1049, 1049,    0, 1049, 1049, 1049,    0,
+    0,    0,    0,    0,    0,    0,    0,    0, 1049,    0,
+ 1049,    0, 1049, 1049,    0,    0, 1049,    0, 1049, 1049,
+ 1049, 1049, 1049, 1049, 1049, 1049, 1049, 1049, 1049, 1049,
+    0, 1049,    0,    0, 1049, 1049,    0,    0, 1049, 1049,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0, 1049, 1049, 1049, 1049, 1049,    0,    0,
+    0,    0, 1049,    0,    0,    0, 1049,    0,    0,    0,
+    0, 1049, 1049, 1049, 1049, 1049,    0,    0,    0, 1049,
+    0, 1049,    0,    0,    0,    0,    0, 1049, 1049,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,  635,    0,
+    0,    0, 1049, 1049, 1049, 1049,   57,   24,    0,   25,
+    0,    0,   26,  259,    0,    0,    0,   27,   62,   63,
+    0,   28,    0,    0,  189,    0,  189,   65,    0,  189,
+   30,    0,    0,    0,  189,    0,    0,   32,  189,    0,
+    0,    0,   33,    0,   72,   73,   34,  189,  636,    0,
+    0,    0,    0,    0,  189,  637,    0,    0,   36,  189,
+   37,   75,    0,  189,   38,    0,    0,   77,    0,   79,
+    0,   81,   39,   40,  260,  189,   41,  189,    0,    0,
+    0,  189,    0,  638,    0,    0,   88,   89,    0,  189,
+  189,    0,    0,  189,    0,    0,  189,    0,    0,    0,
+    0,   90,   91,   92,   93,   94,    0,    0,    0,    0,
+    0,    0,    0,    0,   96,    0,    0,  639,    0,    0,
    98,   99,  100,  101,    0,    0,    0,  102,    0,  103,
- 1049,    0,    0,    0,    0,  104,  105,    0,    0,    0,
+    0,    0, 1074,    0,    0,  104,  105,    0,    0,    0,
     0,    0,    0,   57,   24,    0,   25,    0,    0,   26,
-  256,    0,    0,    0,   27,   62,   63,    0,   28,    0,
-  106,  306,  108,  109,   65,    0,    0,   30,    0,    0,
-    0,    0,    0,    0,   32,    0,    0,    0,  182,   33,
+  259,    0,    0,    0,   27,   62,   63,    0,   28,    0,
+  106,  107,  108,  109,   65,    0,    0,   30,    0,    0,
+    0,    0,    0,    0,   32,    0,    0,    0,  189,   33,
     0,   72,   73,   34,    0,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,   36,    0,   37,   75,    0,
     0,   38,    0,    0,   77,    0,   79,    0,   81,   39,
-   40,  257,    0,   41,    0,    0,    0,    0,    0,    0,
+   40,  260,    0,   41,    0,    0,    0,    0,    0,    0,
    87,    0,    0,   88,   89,    0,    0,    0,    0,    0,
     0,    0,    0,    0,    0,    0,    0,    0,   90,   91,
-   92,   93,  783,    0,    0,    0,  784, 1069,    0,    0,
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+   51,    0,   51,    0,   51,   51,    0,    0,    0,    0,
    51,    0,   51,   51,   51,   51,    0,    0,    0,    0,
-   51,    0,    0,    0,   51,   51,    0,   51,    0,    0,
-    0,    0,  471,  308,    0,    0,   51,    0,   51,   51,
-    0,   51,    0,   51,    0,    0,    0,    0,   51,    0,
-   51,   51,   51,   51,    0,  472,   51,    0,   51,    0,
-    0,    0,   51,    0,  471,   51,    0,    0,  473,    0,
-    0,  309,  474,  475,   51,    0,    0,   51,  476,   51,
-  477,  478,  479,  480,    0,    0,    0,  472,  481,    0,
-    0,    0,  482,    0,    0,    0,    0,    0,    0,    0,
-  473,    0,    0,   51,  483,  475,    0,  484,    0,  485,
-  476,    0,  477,  478,  479,  480,    0,    0,    0,    0,
-  481,    0,    0,    0,  482,    0,    0,    0,    0,    0,
-    0,    0,    0,  486,    0,    0,  483,    0,    0,  484,
-    0,  485,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-    0,    0,    0,    0,    0,  486,
+   51,    0,   51,    0,   51,    0,    0,   51,    0,   40,
+    0,    0,    0,    0,    0,    0,   51,    0,    0,   51,
+   51,   51,    0,    0,   51,   51,    0,    0,    0,    0,
+   51,    0,   51,   51,   51,   51,    0,    0,    0,    0,
+   51,    0,    0,    0,   51,   51,    0,   51,   51,   51,
+    0,    0,  220,    0,    0,    0,   51,    0,    0,   51,
+   51,   51,    0,    0,   51,   51,   51,    0,    0,    0,
+   51,    0,   51,   51,   51,   51,    0,    0,   51,    0,
+   51,    0,    0,    0,   51,   51,    0,   51,   51,   51,
+    0,    0,  222,    0,   51,    0,   51,    0,    0,   51,
+   51,   51,    0,    0,    0,   51,    0,    0,    0,    0,
+   51,    0,   51,   51,   51,   51,    0,   51,    0,    0,
+   51,    0,    0,    0,   51,   51,    0,    0,    0,    0,
+   51,    0,  322,    0,  477,   51,   51,    0,    0,   51,
+   51,   51,   51,   51,   51,   51,    0,    0,    0,    0,
+   51,    0,    0,    0,   51,    0,    0,  478,    0,    0,
+    0,    0,    0,    0,  477,   51,   51,    0,    0,   51,
+  479,   51,  323,    0,  480,  481,    0,    0,    0,    0,
+  482,    0,  483,  484,  485,  486,    0,  478,    0,    0,
+  487,    0,    0,    0,  488,   51,    0,    0,   51,   51,
+  479,    0,    0,    0,    0,  481,  489,    0,    0,  490,
+  482,  491,  483,  484,  485,  486,    0,    0,    0,    0,
+  487,    0,    0,    0,  488,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,  492,  489,    0,    0,  490,
+    0,  491,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+    0,    0,    0,    0,    0,  492,
   };
   protected static readonly short [] yyCheck = {            17,
-    4,  302,   18,  303,  234,   17,   17,  540,  190,  236,
-   52,  292,  488,  189,  538,   17,  510,   52,  326,    6,
-  350,   69,   85,   20,   60,  301,  301,  587, 1001,  158,
-  337,  594,  249,  389,  605,   78, 1183,  805, 1222,  299,
-   88,   89,    0,  256,  114,   93,  116,  256,   59,  256,
- 1325,  114,  256,  116,  614,  268,   74,  774,  333,  776,
-   78,   60, 1216,   45,   17,  113,   48,  373, 1343,   80,
-  256,   82,   17,   88,   89,  256,  256, 1261,   96,  256,
- 1300,  256,  373,  256,  256,  256, 1006,  256,  368,   17,
-  256,    0, 1276,  256,  109,  335,  376,   17,   62,   17,
-  268,  256,   66,   67,   68,  256,   70,   71,  256,  294,
-  827,   75,   76,  830,  256,  268,  263,  269,   82,  374,
-   84,  306,   86,  256,  256,  173, 1280,   91,   92,  256,
- 1058,  372,  368,  357,  286,  256,  343,  256,  374,  305,
-  158,   17,  713,  264,  367,  256,  158,  158,  190,  429,
-  282,  115,  368,  376,  429,  190,  158,  256,  358,  339,
- 1088,  416,  386,  372,  344,  374,  346,  192,  315,  349,
-  350,  388,  352,  353,  256, 1395,   17,  363,  256,    0,
- 1400,   17,  314,   17,  391,  200,  201,  391,  429,  429,
-  371,  363,  234,  429,  374,  256,  371,  256,   17,  234,
-  248,  249,  418,  277,  325,  158,  256,  414,  381,  422,
-  414,  693,  381,  158,  262,  368,  698,  699, 1138,  374,
-  429,  428,  452,   17,   60,  367,  453,  534,   64,  371,
-  158,  249,  418,  418, 1509, 1455,  537,  255,  158,  420,
-  158,  418,  224,  230,  777,  420,  418,  418,  367,  429,
-  265,  299,  371,  289,  422,  418,  367,  587,  369,  358,
-  371, 1536,  325,  299,  334,  556,  329,  418,   17,  422,
-  418,  334,  578, 1548,  292, 1550,  291,  840,  420,  297,
-  298,  256,  158,  331,  614,  418,  418,  578,  336,  363,
-  289,  418,  374,  257,  312,  256,  311,  261,  376,  257,
-  348,  420,  320,  328,  322,  268,  367,  256,  326,  420,
-  321,  257,  423,  276,  605,  376,  375,  158,  256, 1178,
-  338,  339,  158,  322,  158,  424,  425,  426,  427,  344,
-  345,  381,  256,  381,  377,   20,  384,  301,  350,  158,
-  388,  389,  325, 1111,  418,  419, 1063,  256,  350,  374,
-  256,  368,  256,  317,  379,  370, 1503,  262, 1217,  377,
-  931,  292,   21,  256,  158,  256,  256,  256,  335,  277,
-  388,  389,  256,  281,  392,  393,  394,  395,  396,  397,
-  398,  399,  400,  401,  402, 1569,  434,  435,  363,  256,
-  438,  406,  407,  298,   53,  370,  256,  372,  369,  374,
-  363,  418,  373,   88,   89,  257,  424,  256,  714,  158,
-  452, 1384,  256,  256,  375, 1599,  256,  452,  256,  434,
-  435,  463,  713,  256,  109,  256,  256,  376,  463,  256,
-  339,  964,  256,  458,  342,  418,  257,  375,  256,  256,
-  371,  263,  256,  418,  926,  418,  370,  340,  739,  943,
-  374,  272,  423,  289,  762,  418,  277,  454,  367,  976,
-  281,  509,  371,  511,  373,  374,  375,  376,  493,  375,
-  374,  468,  381,  378,  379,  296, 1193,  459,  460,  368,
-  962,  372,  372,  465, 1201,  374,  322,  292,  372,  420,
-  538,  351,  503,  315,  721,  266,  339,  341, 1180,  325,
-  368,  344,  323,  346,  305,  372,  349,  350,  556,  352,
-  353,  510,  560, 1230,  350,  200,  201,  873,  536,  779,
-  538,  342,  540,  372, 1057,  369, 1008,  754, 1010, 1092,
-  747, 1013,  372,  368,  372,  363,  367, 1219,  371,  369,
-  367,  505,  553,  314,  371,  369,  373,  374,  566,  376,
-  856,  369,  369,  571,  381,  369,  604,  266,  583,  556,
-  372,  429,  367,  368,  401,  856,  391, 1084,  343, 1086,
-  339,  582,  368, 1290,  363,  587,  413,  368,  603,  363,
-  265, 1440,  256,  594,  343,  587,  429,  370,  552,  414,
-  418,  374,  418,  618,  429,  368,  621,  622,  367, 1162,
-  428,  305,  614,  368,  375,  314,  291, 1307,  626,  627,
- 1469, 1470,  614, 1472,  372,  256,  391,  429,  303, 1101,
-  294, 1103,  381, 1105,  930, 1484,  311,  928, 1487,  418,
- 1306, 1307,  391,  429,  418,  368,  363, 1197,  429,  414,
-  931,  374,  256, 1502,  428, 1538, 1539,  695,  381,  697,
-  256,  958, 1328,  428, 1354,  414,  429,  372,  706,  344,
-  345,  790,  879,  363,  429,  363,  375, 1526,  371,  428,
-  294,  429,  371,  363,  510,  693,  375,  357, 1354,  369,
-  698,  699,  306,  701,  709,  370,  961,  963,  373,  369,
-  371,  418,  372,  373,  376,  272,  429,  256,  339,  747,
- 1376, 1001, 1595,  344,  729,  346,  386,  363,  349,  350,
-  343,  352,  353,  369,  429,  256,  764,  420,  418,  296,
-  418,  406,  407, 1205, 1307,  339,  341, 1307,  418,  747,
-  344,  779,  346,  374,  369,  349,  350, 1231,  352,  353,
-  372,  421, 1403,  779,  762, 1307,  323,  429,  381,  434,
-  435,  587, 1060,  740,  369,  818, 1417, 1239,  391,  777,
-  256,  367,  418,  374,  305,  371,  784,  373,  374,  454,
-  376, 1354, 1073,  821, 1354,  381, 1307, 1438,  614, 1303,
-  339,  414,  272,  468,  339,  344,  418,  346,  429,  272,
-  349,  350, 1354,  352,  353,  428,  811, 1307,  256,  391,
- 1307,  812, 1307,  814,  256,  416,  296,  855, 1025,  415,
- 1292,  339,  367,  296,  832,  429,  834,  269,  376,  367,
-  835,  376,  414, 1354, 1154,  873,  844,  838,  376,  840,
- 1312,  879,  339,  323,  286,  306,  428,  852, 1366,  367,
-  323, 1017,  313,  339, 1354, 1373,  810, 1354,  344, 1354,
-  346,  339,  381,  349,  350,  873,  352,  353,  394,  395,
-  367,  879,  391,  881,  371,  883,  908, 1197, 1149,  339,
-  429,  556,  370,  908,  367,  272,  374,  369,  367,  367,
-  277,  339, 1183,  376,  281,  414,  344,  375,  346,  381,
-  256,  349,  350,  578,  352,  353,  306,  367,  308,  296,
-  367,  368,  367,  313,  376, 1186,  368,  357,  926,  376,
-  928,  376,  374,  357,    6,  325,  913,  932,  371,  381,
-  605,  969,  368,  373,  972,   17,  323,  945,  374,  373,
-  978,  918,  950,  429,  367,  953,  386,  357,  774,  386,
-  776, 1417,  386,  376,  962,  342,  964, 1228,  306,  967,
-  975,  367,  368,  373, 1390,  313, 1004,  371, 1491, 1176,
-  376, 1291,  368, 1399,  389, 1390,  386,  325,   60,  368,
-  376,  429,   64,  339, 1399,  374,  369, 1025,  344,  372,
-  346,  347,  348,  349,  350,  351,  352,  353,  354,  355,
- 1008,  827, 1010, 1041,  830, 1013,   88,   89,  373, 1047,
-  384,  376,  368,  256,  370,  368,  372, 1025,  374,  375,
-  376,  374, 1242,  376,  370, 1030,  368,  109,  374, 1246,
- 1553,  382,  383,  368,  376, 1022,  368,  372,  713,  374,
-  372,  376, 1214, 1314,  376,  396,  397,  373,  385, 1057,
-  376,  265, 1060,  267,  256, 1032,  270, 1034,  371, 1036,
-  373,  275,  370,  371,  739,  279,  374, 1590, 1083,  373,
-  400,  368,  376,  429,  288,  372,  158,  374,  390,  376,
-  374,  295,  376,  256,  370, 1366,  300,  381,  374,  369,
-  304, 1092, 1373, 1101, 1384, 1103,  339, 1105, 1612, 1613,
- 1108,  344,  316,  346,  318,  415,  349,  350,  322,  352,
-  353,  372,  371,  374,  373,  376,  330,  331,  200,  201,
-  334,  398,  399,  337,  371, 1119,  373,  418,  370,  371,
-  370,  373,  374,  375,  374,  372,  811,  339, 1176,  376,
-  418, 1149,  344,  277,  346,  392,  393,  349,  350,  363,
-  352,  353, 1154,  373,  372,  372, 1164, 1165,  376,  376,
-  835, 1162, 1154,  370,  367,  412,  369,  374, 1176,  367,
-  370, 1177,  372,  420,  374, 1183,  423,  852, 1186,  368,
-  369,  856, 1214,  265, 1216,  372,  429,  374,  370, 1214,
-  372, 1216,  374,  376,  372, 1197,  376, 1205,  376,  256,
-  386,  387,  388, 1211,  418, 1197,  372,  289,  374,  291,
- 1242,  256, 1503,  412,  413,  414,  415, 1242,  357,  373,
- 1228,  303,  256,  370,  363,  372,  374,  376,  376,  311,
-  369, 1239, 1240,  372,  373,  374,  376, 1063,  913,  370,
-  322,  372,  370,  294,  372,  367,  294,  386, 1280,  371,
-  343,  373,  374,  372,  376, 1280,  931,  932,  294,  381,
-  367,  368,  344,  345,  370, 1303,  372,  372,  350,  374,
-  372,    0,  374,  376, 1306, 1307,  370,  414,  372,  418,
-  418, 1306, 1307,  370, 1292,  372,  354,  355,  370, 1291,
-  374,  373,  376,  415,  418, 1303, 1328,  356,  256, 1291,
- 1305,  354,  355, 1328, 1312,  374, 1314,  376,  368,  369,
-  367,  368,  369,  369,  371,  372,  374,  374,  376,  376,
- 1358,  357, 1354,  418,  406,  407, 1001,  363, 1154, 1354,
-  374,  372,  376,  369,  414,  415,  372,  373,  364,  365,
-  372,  373,  367,  368, 1376,  364,  365, 1022,  410,  411,
-  386, 1376,  434,  435,  375, 1030,  408,  409,  372,  376,
- 1365,  418,  368,  420,  374,  381,  423, 1193, 1369,  416,
-  417, 1197,  372,  294, 1389, 1201, 1381, 1382,  294,  429,
-  374,  339,  418,  372,  372,  421,  344,  374,  346,  347,
-  348,  349,  350,  351,  352,  353,  354,  355,  356, 1414,
- 1405,  372,  256, 1408, 1230,  428,  376,  371,  428,  256,
-  368,  294,  370,  294,  372, 1430,  374,  375,  376,  381,
-  372, 1422,  375,  374,  382,  383,  384,  385,  510,  373,
-  373,  389,  390, 1448,  374, 1450,  394,  395,  396,  397,
-  398,  399,  400,  401,  418,  381,  372,  374,  429, 1481,
-  374,  374,  374,  372,  423,  413, 1481,  374,  367,  374,
-  421,  372,  374,  373, 1290, 1291, 1498,  372,  343,  294,
-  294,  429,  374, 1498,  556,  370,  418,  371,  367, 1511,
- 1512,  418,  375, 1491,  256,  256, 1511, 1512, 1489,  374,
-  256,  256,  280,   94,  381, 1503,  578,   98,   99,  100,
-  101,  102,  103,  104,  105,  587, 1538, 1539,  261,  256,
-  367,  372, 1520, 1538, 1539,  368,  343,  376,  370,  374,
-  371,  370,  423,  605,  374,  381,  372,  256,  376,  372,
-  372,  284,  614,  262,  372,  347,  367,  381,  256,  256,
-  381,  376,  372, 1218,  297, 1553,  372,  368,  256,  302,
-  347,  374,  370,  375,  307,  371,  309,  310,  311,  312,
-  370,  292,  370, 1595,  317,  372,  339,  348,  321,  298,
- 1595,  374,  368,  418, 1612, 1613,  256,  372,  371,  418,
-  333,  372, 1590,  336,  348,  338,  368,  367,  367,  381,
-    0,  376,  367,  356,  368, 1596, 1597,  374,  376,  368,
-  368,  371, 1603, 1604, 1612, 1613,  305,  337, 1283,  362,
-  339,  364,  365,  372,  372,  344,  368,  346,  347,  348,
-  349,  350,  351,  352,  353,  354,  355,  356,  418,  371,
- 1305,  713,  369,  367,  363,  418,  371,  376,  367,  368,
-  381,  370,  371,  372,  371,  374,  375,  376,  371,  378,
-  379,  418,  373,  382,  383,  384,  385,  739,  418,  371,
-  389,  390,  367,  372,  371,  394,  395,  396,  397,  398,
-  399,  400,  401,  369,  371,  381,  374,  372,  256,  373,
-  373,  372,  374,  285,  413,  374,  374,  416,  372,  418,
- 1365, 1366,  774,  418,  776,  376,  370,  376, 1373,  418,
-  429,  376,  418,  372,  305,  418, 1381, 1382,  376, 1384,
-  372,  381,  372,  368,  381, 1390,  370,  368,  367,  372,
-  315,  263,  368,  371, 1399,  327,  371,    0, 1403,  811,
- 1405,  372,  372, 1408,    0,  367,  337,  376,  368,  376,
-    0,  256, 1417,  372,  368,  827,  347,  372,  830,  367,
-  372,  370,  418,  835,  368,  372,  368,  372,  367,  370,
-  418,    0,  418, 1438,  368,  372,  376,  372,  376,  368,
-  852,  315,  368,  376,  856,  377,  378,  379,  380,  376,
-  382,  383,  384,  385,  386,  387,  388,  389,  367,  372,
-  392,  393,  394,  395,  396,  397,  398,  399,  368,  372,
-  376,  368,  403,  404,  405,  367,  263,  408,  409,  410,
-  411,  412,  413,  414,  415,  416,  417,  418,  419,  420,
-  421,  422,  423,  373,  339,  376,   51,  376,  376,  344,
-  376,  346,  347,  348,  349,  350,  351,  352,  353,  354,
-  355,  356,  376,  376,  376,  376,  256,   12,    5,  931,
-  932,  261,  262,  368, 1022,  370, 1176,  372,  913,  374,
-  375,  376, 1176, 1376, 1328, 1224,  368, 1543, 1506,  371,
-  385,  373,  374, 1559,  284,  390, 1494, 1489, 1523,  381,
-  753,  935, 1403, 1604, 1354,  400,  401,  297,  298,  935,
-  392,  393,  302,  935, 1423,  305, 1342,  307,  413,  309,
-  310,  311,  312,  930, 1512, 1516, 1598,  317, 1511, 1280,
-  412,  321, 1597, 1450,  429,  325,  908, 1283,  420, 1001,
-  556,  423,  953,  333,  784,  958,  336,  429,  338,  339,
-  879, 1073,  388,  534,  344,    0,  346,  347,  348,  349,
-  350,  351,  352,  353,  354,  355,  356,  747, 1030,  627,
-   72,  779,  362,  363,  340,  418,  420,  367,  368,  419,
-  370,  371,  372,  373,  374,  375,  376,  421,  378,  379,
-  422,  381,  382,  383,  384,  385,  386,  387,  388,  389,
-  390, 1063,  392,  393,  394,  395,  396,  397,  398,  399,
-  400,  401,  402,  403,  404,  405,  406,  407,  408,  409,
-  410,  411,  412,  413,  423, 1182,  416,  578,  418,  610,
-  420, 1365, 1258,  423,  158, 1291,  856,  256,  257,  429,
- 1059, 1154, 1140, 1088, 1165,  264,  265,  266,  267,  268,
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+   -1,  261,  262,  393,  394,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  284,   -1,   -1,   -1,  418,  419,
+  420,  421,   -1,  423,   -1,   -1,   -1,  297,  298,   -1,
+  430,   -1,  302,   -1,   -1,  305,   -1,  307,   -1,  309,
+  310,  311,  312,   -1,   -1,   -1,   -1,  317,   -1,   -1,
+   -1,  321,   -1,   -1,   -1,  325,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  333,   -1,   -1,  336,   -1,  338,  339,
+   -1,    0,   -1,  343,  344,   -1,  346,  347,  348,  349,
+  350,  351,  352,  353,  354,  355,  356,   -1,   -1,   -1,
+   -1,   -1,  362,  363,   -1,   -1,   -1,   -1,  368,  369,
+  370,  371,  372,  373,   -1,  375,  376,  377,   -1,  379,
+  380,   -1,   -1,  383,  384,  385,  386,  256,   -1,   -1,
+  390,  391,  261,  262,   -1,  395,  396,  397,  398,  399,
+  400,  401,  402,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  414,  284,   -1,  417,   -1,  419,
+   -1,  421,   -1,   -1,  424,   -1,   -1,   -1,  297,  298,
+  430,   -1,   -1,  302,   -1,   -1,  305,   -1,  307,   -1,
+  309,  310,  311,  312,   -1,   -1,   -1,   -1,  317,   -1,
+   -1,   -1,  321,   -1,   -1,   -1,  325,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  333,   -1,   -1,  336,   -1,  338,
+  339,   -1,   -1,   -1,  343,  344,   -1,  346,  347,  348,
+  349,  350,  351,  352,  353,  354,  355,  356,   -1,   -1,
+   -1,   -1,  256,  362,  363,   -1,   -1,   -1,  262,  368,
+  369,   -1,  371,  372,  373,   -1,  375,  376,  377,   -1,
+  379,  380,    0,   -1,  383,  384,  385,  386,   -1,   -1,
+   -1,  390,  391,   -1,   -1,   -1,  395,  396,  397,  398,
+  399,  400,  401,  402,  298,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  414,   -1,   -1,  417,   -1,
+  419,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  430,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  339,   -1,   -1,   -1,  343,
+  344,   -1,  346,  347,  348,  349,  350,  351,  352,  353,
+  354,  355,  356,  357,   -1,   -1,   -1,  256,   -1,  363,
+   -1,   -1,   -1,  262,  368,  369,  370,  371,  372,  373,
+  374,  375,  376,  377,   -1,  379,  380,   -1,   -1,  383,
+  384,  385,  386,  387,   -1,   -1,  390,  391,    0,   -1,
+   -1,  395,  396,  397,  398,  399,  400,  401,  402,  298,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  414,   -1,   -1,  417,   -1,  419,   -1,  421,   -1,   -1,
+  424,   -1,   -1,   -1,   -1,   -1,  430,   -1,   -1,   -1,
+   -1,    0,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  339,   -1,   -1,   -1,  343,  344,   -1,  346,  347,  348,
+  349,  350,  351,  352,  353,  354,  355,  356,   -1,   -1,
+   -1,   -1,   -1,   -1,  363,   -1,   -1,   -1,   -1,  368,
+  369,  370,  371,  372,  373,   -1,  375,  376,  377,   -1,
+  379,  380,   -1,   -1,  383,  384,  385,  386,   -1,   -1,
+   -1,  390,  391,   -1,   -1,   -1,  395,  396,  397,  398,
+  399,  400,  401,  402,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,    0,   -1,   -1,   -1,  414,   -1,   -1,  417,   -1,
+  419,   -1,  421,   -1,   -1,  424,   -1,   -1,  256,  257,
+   -1,  430,   -1,  261,   -1,   -1,   -1,  265,   -1,  267,
+   -1,   -1,  270,   -1,  272,  273,   -1,  275,   -1,  277,
+   -1,  279,   -1,  281,  282,  283,  284,   -1,    0,  287,
+  288,   -1,   -1,   -1,   -1,  293,   -1,  295,  296,  297,
+   -1,   -1,  300,  301,  302,   -1,  304,   -1,   -1,  307,
+   -1,  309,  310,  311,  312,   -1,   -1,   -1,  316,  317,
+  318,   -1,   -1,  321,  322,  323,   -1,   -1,   -1,   -1,
+   -1,   -1,  330,  331,   -1,  333,  334,   -1,  336,  337,
+  338,   -1,   -1,   -1,  342,   -1,   -1,   -1,   -1,   -1,
+   -1,    0,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  362,   -1,   -1,   -1,   -1,   -1,
+  368,  369,  370,   -1,   -1,  257,   -1,   -1,   -1,  261,
+  378,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  272,   -1,   -1,   -1,    0,  277,   -1,   -1,   -1,  281,
+   -1,   -1,  284,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  296,  297,   -1,   -1,  257,  301,
+  302,  419,  261,   -1,   -1,  307,   -1,  309,  310,  311,
+  312,   -1,   -1,  272,   -1,  317,   -1,    0,  277,  321,
    -1,  323,  281,   -1,   -1,  284,   -1,   -1,   -1,   -1,
    -1,  333,   -1,   -1,  336,   -1,  338,  296,  297,   -1,
-  342,  257,  301,  302,   -1,  261,   -1,    0,  307,   -1,
-  309,  310,  311,  312,   -1,   -1,  272,   -1,  317,   -1,
-  362,  277,  321,   -1,  323,  281,  368,  369,  284,   -1,
-   -1,   -1,   -1,   -1,  333,   -1,   -1,  336,   -1,  338,
-  296,  297,   -1,  342,   -1,  301,  302,   -1,   -1,   -1,
-   -1,  307,   -1,  309,  310,  311,  312,   -1,   -1,   -1,
-   -1,  317,   -1,  362,  257,  321,   -1,  323,  261,   -1,
-  369,   -1,   -1,   -1,   -1,   -1,   -1,  333,   -1,  272,
-  336,   -1,  338,   -1,  277,   -1,  342,   -1,  281,   -1,
-   -1,  284,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  296,  297,   -1,  362,   -1,  301,  302,
-   -1,  257,   -1,   -1,  307,  261,  309,  310,  311,  312,
-   -1,   -1,   -1,   -1,  317,   -1,  272,   -1,  321,   -1,
-  323,  277,   -1,   -1,   -1,  281,   -1,   -1,  284,   -1,
-  333,   -1,   -1,  336,   -1,  338,   -1,   -1,   -1,  342,
-  296,  297,   -1,   -1,   -1,  301,  302,   -1,   -1,   -1,
-   -1,  307,   -1,  309,  310,  311,  312,   -1,   -1,  362,
-   -1,  317,   -1,   -1,   -1,  321,   -1,  323,  257,   -1,
-   -1,   -1,  261,   -1,   -1,   -1,   -1,  333,   -1,   -1,
-  336,   -1,  338,  272,   -1,   -1,  342,   -1,  277,   -1,
-   -1,   -1,  281,   -1,   -1,  284,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  362,  296,  297,   -1,
-   -1,  257,  301,  302,   -1,  261,   -1,   -1,  307,   -1,
+  342,   -1,  301,  302,   -1,   -1,   -1,   -1,  307,   -1,
+  309,  310,  311,  312,   -1,   -1,   -1,   -1,  317,   -1,
+  362,   -1,  321,   -1,  323,   -1,   -1,  369,  370,   -1,
+   -1,   -1,   -1,   -1,  333,   -1,   -1,  336,  257,  338,
+    0,   -1,  261,  342,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  272,   -1,   -1,   -1,   -1,  277,   -1,
+   -1,   -1,  281,  362,   -1,  284,   -1,   -1,   -1,   -1,
+   -1,  370,   -1,   -1,   -1,   -1,   -1,  296,  297,   -1,
+   -1,   -1,  301,  302,   -1,  257,   -1,   -1,  307,  261,
+  309,  310,  311,  312,   -1,   -1,   -1,   -1,  317,   -1,
+  272,   -1,  321,   -1,  323,  277,   -1,   -1,   -1,  281,
+   -1,   -1,  284,   -1,  333,   -1,   -1,  336,   -1,  338,
+   -1,   -1,   -1,  342,  296,  297,   -1,   -1,   -1,  301,
+  302,   -1,   -1,   -1,   -1,  307,   -1,  309,  310,  311,
+  312,   -1,   -1,  362,   -1,  317,   -1,   -1,  257,  321,
+   -1,  323,  261,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  333,   -1,  272,  336,   -1,  338,   -1,  277,   -1,
+  342,   -1,  281,   -1,   -1,  284,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  296,  297,   -1,
+  362,  257,  301,  302,   -1,  261,   -1,   -1,  307,   -1,
   309,  310,  311,  312,   -1,   -1,  272,   -1,  317,   -1,
    -1,  277,  321,   -1,  323,  281,   -1,   -1,  284,   -1,
    -1,   -1,   -1,   -1,  333,   -1,   -1,  336,   -1,  338,
@@ -13153,354 +13554,495 @@ void case_1053()
    -1,  284,   -1,   -1,   -1,   -1,   -1,  333,   -1,   -1,
   336,   -1,  338,  296,  297,   -1,  342,   -1,  301,  302,
    -1,   -1,   -1,   -1,  307,   -1,  309,  310,  311,  312,
-   -1,   -1,   -1,   -1,  317,   -1,  362,   -1,  321,   -1,
-  323,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  333,   -1,  256,  336,   -1,  338,   -1,   -1,   -1,  342,
-  264,  265,  266,  267,   -1,   -1,  270,  271,   -1,  273,
-  274,  275,  276,  277,  278,  279,   -1,   -1,   -1,  362,
-   -1,  285,   -1,  287,  288,  289,  290,  291,  292,   -1,
-   -1,  295,   -1,   -1,   -1,  299,  300,   -1,  302,  303,
-  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  314,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
-  324,  325,  326,  327,  328,  329,  330,  331,  332,  333,
-  334,  335,   -1,  337,   -1,   -1,  340,  341,   -1,  256,
-  344,  345,   -1,   -1,   -1,  262,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
-   -1,   -1,   -1,  367,   -1,   -1,   -1,  371,   -1,   -1,
-   -1,   -1,  376,  377,  378,  379,  380,   -1,   -1,   -1,
-  384,  298,  386,   -1,   -1,   -1,   -1,   -1,  392,  393,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  256,   -1,   -1,   -1,   -1,
-   -1,  262,   -1,  417,  418,  419,  420,   -1,   -1,   -1,
-   -1,   -1,  339,   -1,   -1,  429,   -1,  344,   -1,  346,
-  347,  348,  349,  350,  351,  352,  353,  354,  355,  356,
-  357,   -1,   -1,   -1,   -1,   -1,  363,  298,   -1,   -1,
-   -1,  368,  369,  370,  371,  372,  373,  374,  375,  376,
-   -1,  378,  379,   -1,  381,  382,  383,  384,  385,  386,
-  387,  388,  389,  390,   -1,  392,  393,  394,  395,  396,
-  397,  398,  399,  400,  401,  402,  403,  404,  405,  406,
-  407,  408,  409,  410,  411,  412,  413,  414,  256,   -1,
-   -1,  418,   -1,  420,  262,   -1,  423,   -1,   -1,   -1,
-   -1,   -1,  429,   -1,   -1,   -1,   -1,  368,   -1,   -1,
-  371,   -1,  373,  374,   -1,   -1,   -1,  378,  379,   -1,
+   -1,   -1,   -1,   -1,  317,   -1,  362,  257,  321,   -1,
+  323,  261,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  333,   -1,  272,  336,   -1,  338,   -1,  277,   -1,  342,
+   -1,  281,   -1,   -1,  284,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,  296,  297,   -1,  362,
+   -1,  301,  302,   -1,   -1,   -1,   -1,  307,   -1,  309,
+  310,  311,  312,   -1,   -1,   -1,   -1,  317,   -1,   -1,
+   -1,  321,   -1,  323,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  333,   -1,  256,  336,   -1,  338,   -1,
+   -1,   -1,  342,  264,  265,  266,  267,   -1,   -1,  270,
+  271,   -1,  273,  274,  275,  276,  277,  278,  279,   -1,
+   -1,   -1,  362,   -1,  285,   -1,  287,  288,  289,  290,
+  291,  292,   -1,   -1,  295,   -1,   -1,   -1,  299,  300,
+   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  314,   -1,  316,   -1,  318,  319,   -1,
+   -1,  322,   -1,  324,  325,  326,  327,  328,  329,  330,
+  331,  332,  333,  334,  335,   -1,  337,   -1,   -1,  340,
+  341,   -1,   -1,  344,  345,  256,   -1,   -1,   -1,  261,
+   -1,  262,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
+  361,  362,  363,   -1,   -1,   -1,   -1,  368,   -1,   -1,
+   -1,  372,  284,   -1,   -1,   -1,  377,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,  297,  387,  298,   -1,   -1,
+  302,   -1,  393,  394,   -1,  307,   -1,  309,  310,  311,
+  312,   -1,   -1,   -1,   -1,  317,   -1,   -1,   -1,  321,
+   -1,   -1,   -1,  325,   -1,   -1,   -1,  418,  419,  420,
+  421,  333,   -1,   -1,  336,   -1,  338,   -1,  339,  430,
+   -1,   -1,   -1,  344,  256,  346,  347,  348,  349,  350,
+  351,  352,  353,  354,  355,  356,  357,   -1,   -1,   -1,
+  362,   -1,  363,  364,   -1,   -1,   -1,   -1,  369,  370,
+  371,  372,  373,  374,  375,  376,  377,   -1,  379,  380,
    -1,  382,  383,  384,  385,  386,  387,  388,  389,  390,
-  298,  392,  393,  394,  395,  396,  397,  398,  399,  400,
-  401,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  412,  413,   -1,   -1,   -1,   -1,   -1,   -1,  420,
-   -1,   -1,  423,   -1,   -1,   -1,   -1,   -1,  429,   -1,
-   -1,  339,   -1,   -1,   -1,   -1,  344,   -1,  346,  347,
-  348,  349,  350,  351,  352,  353,  354,  355,  356,  357,
-   -1,   -1,   -1,   -1,   -1,  363,   -1,   -1,   -1,   -1,
-  368,  369,  370,  371,  372,  373,  374,  375,  376,  256,
-  378,  379,   -1,  381,  382,  383,  384,  385,  386,  387,
-  388,  389,  390,   -1,  392,  393,  394,  395,  396,  397,
-  398,  399,  400,  401,  402,  403,  404,  405,  406,  407,
-  408,  409,  410,  411,  412,  413,   -1,  256,   -1,   -1,
-  418,   -1,  420,  262,   -1,  423,   -1,   -1,   -1,   -1,
-   -1,  429,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  298,
-   -1,   -1,  339,   -1,   -1,   -1,   -1,  344,   -1,  346,
-  347,  348,  349,  350,  351,  352,  353,  354,  355,  356,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  368,   -1,  370,   -1,  372,   -1,  374,  375,  376,
-  339,   -1,   -1,   -1,   -1,  344,   -1,  346,  347,  348,
-  349,  350,  351,  352,  353,  354,  355,  356,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  367,  368,
-  369,  370,  371,  372,  373,  374,  375,  376,   -1,  378,
-  379,   -1,  381,  382,  383,  384,  385,  386,  387,  388,
-  389,  390,  429,  392,  393,  394,  395,  396,  397,  398,
-  399,  400,  401,  402,  403,  404,  405,  406,  407,  408,
-  409,  410,  411,  412,  413,   -1,  256,  256,   -1,   -1,
-   -1,  420,  262,   -1,   -1,   -1,  265,   -1,  267,   -1,
-  429,  270,   -1,   -1,   -1,   -1,  275,   -1,   -1,   -1,
+  391,   -1,  393,  394,  395,  396,  397,  398,  399,  400,
+  401,  402,  403,  404,  405,  406,  407,  408,  409,  410,
+  411,  412,  413,  414,  415,   -1,  256,  419,  419,   -1,
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-  374,  375,  376,   -1,   -1,   -1,   -1,  262,   -1,   -1,
-   -1,  266,   -1,   -1,   -1,   -1,  390,   -1,   -1,   -1,
-   -1,  339,   -1,   -1,   -1,   -1,  344,  401,  346,  347,
-  348,  349,  350,  351,  352,  353,  354,  355,  356,  413,
-   -1,   -1,   -1,  298,   -1,   -1,   -1,   -1,   -1,   -1,
-  368,   -1,  370,   -1,  372,  429,  374,  375,  376,  314,
+   -1,   -1,   -1,   -1,   -1,   -1,  256,   -1,  418,  419,
+  420,  421,   -1,  423,  264,  265,  266,  267,   -1,   -1,
+  270,  271,   -1,  273,  274,  275,  276,  277,  278,  279,
+   -1,   -1,   -1,   -1,   -1,  285,   -1,  287,  288,  289,
+  290,  291,  292,   -1,   -1,  295,   -1,   -1,   -1,  299,
+  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  314,   -1,  316,   -1,  318,  319,
+   -1,   -1,  322,   -1,  324,  325,  326,  327,  328,  329,
+  330,  331,  332,  333,  334,  335,   -1,  337,   -1,   -1,
+  340,  341,   -1,   -1,  344,  345,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,
+  360,  361,  362,  363,   -1,   -1,   -1,   -1,  368,   -1,
+   -1,   -1,  372,   -1,   -1,   -1,   -1,  377,  378,  379,
+  380,  381,   -1,   -1,   -1,  385,   -1,  387,   -1,   -1,
+   -1,   -1,   -1,  393,  394,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  390,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  401,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  413,   -1,   -1,   -1,   -1,
-   -1,   -1,  357,   -1,   -1,   -1,   -1,   -1,  363,   -1,
-   -1,  429,   -1,  368,  369,   -1,  371,   -1,  373,   -1,
-  375,  376,   -1,  378,  379,   -1,  381,  382,  383,  384,
-  385,  386,  387,  388,  389,  390,   -1,  392,  393,  394,
-  395,  396,  397,  398,  399,  400,  401,  402,  403,  404,
-  405,  406,  407,  408,  409,  410,  411,  412,  413,   -1,
-   -1,  256,   -1,  418,   -1,  420,   -1,   -1,  423,  264,
-  265,  266,  267,  268,  429,  270,  271,   -1,  273,  274,
-  275,  276,  277,  278,  279,   -1,   -1,   -1,   -1,   -1,
-  285,   -1,  287,  288,  289,  290,  291,  292,   -1,   -1,
-  295,   -1,   -1,   -1,  299,  300,   -1,  302,  303,  304,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  314,
-   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,  324,
-  325,  326,  327,  328,  329,  330,  331,  332,  333,  334,
-  335,   -1,  337,   -1,   -1,  340,  341,   -1,   -1,  344,
-  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
-   -1,   -1,  367,   -1,   -1,   -1,  371,   -1,   -1,   -1,
-   -1,  376,  377,  378,  379,  380,   -1,   -1,   -1,  384,
-   -1,  386,   -1,   -1,   -1,   -1,   -1,  392,  393,   -1,
+   -1,   -1,   -1,   -1,  256,   -1,   -1,   -1,  418,  419,
+  420,  421,  264,  265,  266,  267,   -1,   -1,  270,  271,
+   -1,  273,  274,  275,  276,  277,  278,  279,   -1,   -1,
+   -1,   -1,   -1,  285,   -1,  287,  288,  289,  290,  291,
+  292,   -1,   -1,  295,   -1,   -1,   -1,  299,  300,   -1,
+  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,  314,   -1,  316,   -1,  318,  319,   -1,   -1,
+  322,   -1,  324,  325,  326,  327,  328,  329,  330,  331,
+  332,  333,  334,  335,   -1,  337,   -1,   -1,  340,  341,
+   -1,   -1,  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,
+  362,  363,   -1,   -1,   -1,   -1,  368,   -1,   -1,   -1,
+  372,   -1,   -1,   -1,   -1,  377,  378,  379,  380,  381,
+   -1,   -1,   -1,  385,   -1,  387,   -1,   -1,   -1,   -1,
+   -1,  393,  394,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,  256,   -1,   -1,   -1,  418,  419,  420,  421,
+  264,  265,  266,  267,   -1,   -1,  270,  271,   -1,  273,
+  274,  275,  276,  277,  278,  279,   -1,   -1,   -1,   -1,
+   -1,  285,   -1,  287,  288,  289,  290,  291,  292,   -1,
+   -1,  295,   -1,   -1,   -1,  299,  300,   -1,  302,  303,
+  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  314,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
+  324,  325,  326,  327,  328,  329,  330,  331,  332,  333,
+  334,  335,   -1,  337,   -1,   -1,  340,  341,   -1,   -1,
+  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
+   -1,   -1,   -1,   -1,  368,   -1,   -1,   -1,  372,   -1,
+   -1,   -1,   -1,  377,  378,  379,  380,  381,   -1,   -1,
+   -1,  385,   -1,  387,   -1,   -1,   -1,   -1,   -1,  393,
+  394,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  256,   -1,  417,  418,  419,  420,   -1,  422,  264,  265,
+  256,   -1,   -1,   -1,  418,  419,  420,  421,  264,  265,
   266,  267,   -1,   -1,  270,  271,   -1,  273,  274,  275,
   276,  277,  278,  279,   -1,   -1,   -1,   -1,   -1,  285,
    -1,  287,  288,  289,  290,  291,  292,   -1,   -1,  295,
@@ -13511,60 +14053,13 @@ void case_1053()
    -1,  337,   -1,   -1,  340,  341,   -1,   -1,  344,  345,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,
-   -1,  367,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,
-  376,  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,
-  386,   -1,   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,   -1,   -1,
-   -1,  417,  418,  419,  420,  264,  265,  266,  267,   -1,
-   -1,  270,  271,   -1,  273,  274,  275,  276,  277,  278,
-  279,   -1,   -1,   -1,   -1,   -1,  285,   -1,  287,  288,
-  289,  290,  291,  292,   -1,   -1,  295,   -1,   -1,   -1,
-  299,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  314,   -1,  316,   -1,  318,
-  319,   -1,   -1,  322,   -1,  324,  325,  326,  327,  328,
-  329,  330,  331,  332,  333,  334,  335,   -1,  337,   -1,
-   -1,  340,  341,   -1,   -1,  344,  345,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  359,  360,  361,  362,  363,   -1,   -1,   -1,  367,   -1,
-   -1,   -1,  371,   -1,   -1,   -1,   -1,  376,  377,  378,
-  379,  380,   -1,   -1,   -1,  384,   -1,  386,   -1,   -1,
-   -1,   -1,   -1,  392,  393,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  256,   -1,   -1,   -1,  417,  418,
-  419,  420,  264,  265,  266,  267,   -1,   -1,  270,  271,
-   -1,  273,  274,  275,  276,  277,  278,  279,   -1,   -1,
-   -1,   -1,   -1,  285,   -1,  287,  288,  289,  290,  291,
-  292,   -1,   -1,  295,   -1,   -1,   -1,  299,  300,   -1,
-  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  314,   -1,  316,   -1,  318,  319,   -1,   -1,
-  322,   -1,  324,  325,  326,  327,  328,  329,  330,  331,
-  332,  333,  334,  335,   -1,  337,   -1,   -1,  340,  341,
-   -1,   -1,  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,
-  362,  363,   -1,   -1,   -1,  367,   -1,   -1,   -1,  371,
-   -1,   -1,   -1,   -1,  376,  377,  378,  379,  380,   -1,
-   -1,   -1,  384,   -1,  386,   -1,   -1,   -1,   -1,   -1,
-  392,  393,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  256,   -1,   -1,   -1,  417,  418,  419,  420,  264,
-  265,  266,  267,   -1,   -1,  270,  271,   -1,  273,  274,
-  275,  276,  277,  278,  279,   -1,   -1,   -1,   -1,   -1,
-  285,   -1,  287,  288,  289,  290,  291,  292,   -1,   -1,
-  295,   -1,   -1,   -1,  299,  300,   -1,  302,  303,  304,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  314,
-   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,  324,
-  325,  326,  327,  328,  329,  330,  331,  332,  333,  334,
-  335,   -1,  337,   -1,   -1,  340,  341,   -1,   -1,  344,
-  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
-   -1,   -1,  367,   -1,   -1,   -1,  371,   -1,   -1,   -1,
-   -1,  376,  377,  378,  379,  380,   -1,   -1,   -1,  384,
-   -1,  386,   -1,   -1,   -1,   -1,   -1,  392,  393,   -1,
+   -1,   -1,  368,   -1,   -1,   -1,  372,   -1,   -1,   -1,
+   -1,  377,  378,  379,  380,  381,   -1,   -1,   -1,  385,
+   -1,  387,   -1,   -1,   -1,   -1,   -1,  393,  394,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,   -1,
-   -1,   -1,  417,  418,  419,  420,  264,  265,   -1,  267,
-   -1,   -1,  270,  271,   -1,  256,   -1,  275,  276,  277,
+   -1,   -1,  418,  419,  420,  421,  264,  265,   -1,  267,
+   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,
    -1,  279,   -1,   -1,  265,   -1,  267,  285,   -1,  270,
   288,   -1,   -1,   -1,  275,   -1,   -1,  295,  279,   -1,
    -1,   -1,  300,   -1,  302,  303,  304,  288,  306,   -1,
@@ -13574,45 +14069,73 @@ void case_1053()
    -1,  322,   -1,  341,   -1,   -1,  344,  345,   -1,  330,
   331,   -1,   -1,  334,   -1,   -1,  337,   -1,   -1,   -1,
    -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  371,   -1,   -1,  374,   -1,   -1,  377,
-  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,   -1,
-   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  372,   -1,   -1,  375,   -1,   -1,
+  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,
+   -1,   -1,  373,   -1,   -1,  393,  394,   -1,   -1,   -1,
+   -1,   -1,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
+  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,
+  418,  419,  420,  421,  285,   -1,   -1,  288,   -1,   -1,
+   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,  419,  300,
+   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,
+   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,
+  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,
+  341,   -1,   -1,  344,  345,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
+  361,  362,  363,   -1,   -1,   -1,   -1,  368,  369,   -1,
+   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,   -1,  387,   -1,   -1,   -1,
+   -1,   -1,  393,  394,   -1,   -1,   -1,   -1,   -1,   -1,
+  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,
+   -1,  275,  276,  277,   -1,  279,   -1,  418,  419,  420,
+  421,  285,   -1,  424,  288,   -1,   -1,   -1,  429,   -1,
+   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,
+  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
+   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,
+  334,   -1,   -1,   -1,   -1,   -1,   -1,  341,   -1,   -1,
+  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
+   -1,   -1,   -1,   -1,  368,   -1,   -1,   -1,  372,   -1,
+   -1,   -1,   -1,   -1,  378,  379,  380,  381,   -1,   -1,
+   -1,  385,   -1,  387,   -1,   -1,   -1,   -1,   -1,  393,
+  394,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  256,   -1,   -1,   -1,  417,
-  418,  419,  420,  264,  265,   -1,  267,   -1,   -1,  270,
-  271,   -1,  256,   -1,  275,  276,  277,  418,  279,   -1,
-   -1,  265,   -1,  267,  285,   -1,  270,  288,   -1,   -1,
-   -1,  275,   -1,   -1,  295,  279,   -1,   -1,   -1,  300,
-   -1,  302,  303,  304,  288,   -1,   -1,   -1,   -1,   -1,
-   -1,  295,   -1,   -1,   -1,  316,  300,  318,  319,   -1,
-  304,  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,
-  331,  332,  316,  334,  318,   -1,   -1,   -1,  322,   -1,
-  341,   -1,   -1,  344,  345,   -1,  330,  331,   -1,   -1,
-  334,   -1,   -1,  337,   -1,   -1,   -1,   -1,  359,  360,
-  361,  362,  363,   -1,   -1,   -1,  367,  368,   -1,   -1,
-  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,
-   -1,   -1,   -1,  384,   -1,  386,   -1,   -1,   -1,   -1,
-   -1,  392,  393,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  256,  418,  419,  420,  421,   -1,   -1,
+  424,  264,  265,   -1,  267,  429,   -1,  270,  271,   -1,
+   -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,  265,
+   -1,  267,  285,   -1,  270,  288,   -1,   -1,   -1,  275,
+   -1,   -1,  295,  279,   -1,   -1,   -1,  300,   -1,  302,
+  303,  304,  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,
+   -1,   -1,   -1,  316,  300,  318,  319,   -1,  304,  322,
+   -1,   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,
+  316,  334,  318,   -1,   -1,   -1,  322,   -1,  341,   -1,
+   -1,  344,  345,   -1,  330,  331,   -1,   -1,  334,   -1,
+   -1,  337,   -1,   -1,   -1,   -1,  359,  360,  361,  362,
+  363,   -1,   -1,   -1,   -1,  368,  369,   -1,   -1,  372,
+   -1,   -1,   -1,   -1,   -1,  378,  379,  380,  381,   -1,
+   -1,   -1,  385,   -1,  387,  371,   -1,   -1,   -1,   -1,
+  393,  394,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  256,   -1,   -1,   -1,  417,  418,  419,  420,
-  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,
-   -1,  275,  276,  277,  418,  279,   -1,   -1,  265,   -1,
-  267,  285,   -1,  270,  288,   -1,   -1,   -1,  275,   -1,
-   -1,  295,  279,   -1,   -1,   -1,  300,   -1,  302,  303,
-  304,  288,  306,   -1,   -1,   -1,   -1,   -1,  295,  313,
-   -1,   -1,  316,  300,  318,  319,   -1,  304,  322,   -1,
-   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,  316,
-  334,  318,   -1,   -1,   -1,  322,   -1,  341,   -1,   -1,
-  344,  345,   -1,  330,  331,   -1,   -1,  334,   -1,   -1,
-  337,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,
-   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,
-  384,   -1,  386,   -1,   -1,  372,   -1,   -1,  392,  393,
+   -1,  256,   -1,   -1,   -1,  418,  419,  420,  421,  264,
+  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,
+  275,  276,  277,  419,  279,   -1,   -1,  265,   -1,  267,
+  285,   -1,  270,  288,   -1,   -1,   -1,  275,   -1,   -1,
+  295,  279,   -1,   -1,   -1,  300,   -1,  302,  303,  304,
+  288,  306,   -1,   -1,   -1,   -1,   -1,  295,  313,   -1,
+   -1,  316,  300,  318,  319,   -1,  304,  322,   -1,   -1,
+  325,   -1,  327,   -1,  329,  330,  331,  332,  316,  334,
+  318,   -1,   -1,   -1,  322,   -1,  341,   -1,   -1,  344,
+  345,   -1,  330,  331,   -1,   -1,  334,   -1,   -1,  337,
+   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,
+   -1,   -1,   -1,  378,  379,  380,  381,   -1,   -1,   -1,
+  385,   -1,  387,   -1,   -1,   -1,   -1,   -1,  393,  394,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,
-   -1,   -1,   -1,  417,  418,  419,  420,  264,  265,   -1,
+   -1,   -1,   -1,  418,  419,  420,  421,  264,  265,   -1,
   267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,
-  277,  418,  279,   -1,   -1,  265,   -1,  267,  285,   -1,
+  277,  419,  279,   -1,   -1,  265,   -1,  267,  285,   -1,
   270,  288,   -1,   -1,   -1,  275,   -1,   -1,  295,  279,
    -1,   -1,   -1,  300,   -1,  302,  303,  304,  288,   -1,
    -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,  316,
@@ -13621,84 +14144,57 @@ void case_1053()
    -1,   -1,  322,   -1,  341,   -1,   -1,  344,  345,   -1,
   330,  331,   -1,   -1,  334,   -1,   -1,  337,   -1,   -1,
    -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,
-  367,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,
-  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,
-  370,   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,   -1,
-   -1,   -1,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
-  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,
-  417,  418,  419,  420,  285,   -1,   -1,  288,   -1,   -1,
-   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,  418,  300,
-   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,
-   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,
-  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,
-  341,   -1,   -1,  344,  345,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
-  361,  362,  363,   -1,   -1,   -1,  367,  368,   -1,   -1,
-  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,
-   -1,   -1,   -1,  384,   -1,  386,   -1,   -1,   -1,   -1,
-   -1,  392,  393,   -1,   -1,   -1,   -1,   -1,   -1,  264,
-  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,
-  275,  276,  277,   -1,  279,   -1,  417,  418,  419,  420,
-  285,   -1,   -1,  288,   -1,   -1,   -1,  428,   -1,   -1,
-  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,
-  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,
-   -1,   -1,   -1,   -1,   -1,   -1,  341,   -1,   -1,  344,
-  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
-   -1,   -1,  367,   -1,   -1,   -1,  371,   -1,   -1,   -1,
-   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,
-   -1,  386,   -1,   -1,   -1,   -1,   -1,  392,  393,   -1,
+   -1,  368,   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,
+   -1,  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,
+  387,   -1,   -1,   -1,   -1,   -1,  393,  394,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,   -1,   -1,
+   -1,  418,  419,  420,  421,  264,  265,   -1,  267,   -1,
+   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,  419,
+  279,   -1,   -1,   -1,   -1,   -1,  285,   -1,   -1,  288,
+   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
+   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,
+  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,
+  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,
+   -1,   -1,  341,   -1,   -1,  344,  345,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  256,   -1,  417,  418,  419,  420,   -1,   -1,  264,  265,
-   -1,  267,   -1,  428,  270,  271,   -1,   -1,   -1,  275,
-  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,
-   -1,   -1,  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,
-   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,
-   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,
-   -1,   -1,   -1,   -1,   -1,  341,   -1,   -1,  344,  345,
+  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,  368,
+   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,
+  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,   -1,
+   -1,   -1,   -1,   -1,  393,  394,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,
-   -1,  367,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,
-   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,
-  386,   -1,   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,   -1,  418,
+  419,  420,  421,  262,   -1,  264,  265,   -1,  267,   -1,
+   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,
+  279,   -1,   -1,   -1,   -1,   -1,  285,   -1,   -1,  288,
+   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,  298,
+   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,
+  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,
+  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  343,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,
-   -1,  417,  418,  419,  420,  262,   -1,  264,  265,   -1,
+  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  372,   -1,  374,   -1,   -1,   -1,  378,
+  379,  380,  381,  382,   -1,   -1,  385,   -1,  387,  256,
+   -1,   -1,   -1,   -1,  393,  394,   -1,  264,  265,   -1,
   267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,
-  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,   -1,
-   -1,  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,
-   -1,  298,   -1,  300,   -1,  302,  303,  304,   -1,   -1,
+  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  418,
+  419,  288,  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,
+   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,
    -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,
   327,   -1,  329,  330,  331,  332,   -1,  334,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  343,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  341,   -1,   -1,  344,  345,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  371,   -1,  373,   -1,   -1,   -1,
-  377,  378,  379,  380,  381,   -1,   -1,  384,   -1,  386,
-  256,   -1,   -1,   -1,   -1,  392,  393,   -1,  264,  265,
-   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,
-  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,
-  417,  418,  288,  420,   -1,   -1,   -1,   -1,   -1,  295,
-   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,
-   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,
-   -1,   -1,   -1,   -1,   -1,  341,   -1,   -1,  344,  345,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,
-   -1,   -1,  368,   -1,   -1,  371,   -1,   -1,   -1,   -1,
-   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,
-  386,   -1,   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,
+   -1,   -1,  369,   -1,   -1,  372,   -1,   -1,   -1,   -1,
+   -1,  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,
+  387,   -1,   -1,   -1,   -1,   -1,  393,  394,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,   -1,   -1,
-   -1,  417,  418,  419,  420,  264,  265,   -1,  267,   -1,
+   -1,  418,  419,  420,  421,  264,  265,   -1,  267,   -1,
    -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,
   279,   -1,   -1,  265,   -1,  267,  285,   -1,  270,  288,
    -1,   -1,   -1,  275,   -1,   -1,  295,  279,   -1,   -1,
@@ -13708,152 +14204,285 @@ void case_1053()
   329,  330,  331,  332,  316,  334,  318,   -1,   -1,   -1,
   322,   -1,  341,   -1,   -1,  344,  345,   -1,  330,  331,
    -1,   -1,  334,   -1,   -1,  337,   -1,   -1,   -1,   -1,
-  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,  368,
-   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,  378,
-  379,  380,   -1,   -1,   -1,  384,   -1,  386,   -1,   -1,
-   -1,   -1,   -1,  392,  393,   -1,   -1,   -1,   -1,   -1,
+  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,
+  369,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,
+  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,   -1,
+   -1,   -1,   -1,   -1,  393,  394,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  256,   -1,   -1,   -1,  417,  418,
-  419,  420,  264,  265,   -1,  267,   -1,   -1,  270,  271,
-   -1,   -1,   -1,  275,  276,  277,  418,  279,   -1,   -1,
-  265,   -1,  267,  285,   -1,  270,  288,   -1,   -1,   -1,
-  275,   -1,   -1,  295,  279,   -1,   -1,   -1,  300,   -1,
-  302,  303,  304,  288,   -1,   -1,   -1,   -1,   -1,   -1,
-  295,   -1,   -1,   -1,  316,  300,  318,  319,   -1,  304,
-  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,  331,
-  332,  316,  334,  318,   -1,   -1,   -1,  322,   -1,  341,
-   -1,   -1,  344,  345,   -1,  330,  331,   -1,   -1,  334,
-   -1,   -1,  337,   -1,   -1,   -1,   -1,  359,  360,  361,
-  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,
-   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,   -1,
-   -1,   -1,  384,   -1,  386,   -1,   -1,   -1,   -1,   -1,
-  392,  393,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  256,   -1,   -1,   -1,  418,
+  419,  420,  421,  264,  265,   -1,  267,   -1,   -1,  270,
+  271,   -1,   -1,   -1,  275,  276,  277,  419,  279,   -1,
+   -1,  265,   -1,  267,  285,   -1,  270,  288,   -1,   -1,
+   -1,  275,   -1,   -1,  295,  279,   -1,   -1,   -1,  300,
+   -1,  302,  303,  304,  288,   -1,   -1,   -1,   -1,   -1,
+   -1,  295,   -1,   -1,   -1,  316,  300,  318,  319,   -1,
+  304,  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,
+  331,  332,  316,  334,  318,   -1,   -1,   -1,  322,   -1,
+  341,   -1,   -1,  344,  345,   -1,  330,  331,   -1,   -1,
+  334,   -1,   -1,  337,   -1,   -1,   -1,   -1,  359,  360,
+  361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,   -1,  387,   -1,   -1,   -1,
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-   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,
+  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,
+   -1,   -1,   -1,   -1,   -1,  378,  379,  380,  381,   -1,
+   -1,   -1,  385,   -1,  387,  256,   -1,   -1,   -1,   -1,
+  393,  394,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
+  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,
+   -1,   -1,   -1,   -1,  285,  418,  419,  288,  421,   -1,
+   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,
+   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,
+   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,
+  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  256,   -1,   -1,   -1,  417,
-  418,  419,  420,  264,  265,   -1,  267,   -1,   -1,  270,
-  271,   -1,   -1,   -1,  275,  276,  277,  418,  279,   -1,
-   -1,  265,   -1,  267,  285,   -1,  270,  288,   -1,   -1,
-   -1,  275,   -1,   -1,  295,  279,   -1,   -1,   -1,  300,
-   -1,  302,  303,  304,  288,   -1,   -1,   -1,   -1,   -1,
-   -1,  295,   -1,   -1,   -1,  316,  300,  318,  319,   -1,
-  304,  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,
-  331,  332,  316,  334,  318,   -1,   -1,   -1,  322,   -1,
-  341,   -1,   -1,  344,  345,   -1,  330,  331,   -1,   -1,
-  334,   -1,   -1,  337,   -1,   -1,   -1,   -1,  359,  360,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
   361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,
-   -1,   -1,   -1,  384,   -1,  386,   -1,   -1,   -1,   -1,
-   -1,  392,  393,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,   -1,  387,  256,   -1,   -1,
+   -1,   -1,  393,  394,   -1,  264,  265,   -1,  267,   -1,
+   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,
+  279,   -1,   -1,   -1,   -1,   -1,  285,  418,  419,  288,
+  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
+   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,
+  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,
+  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  256,   -1,   -1,   -1,  417,  418,  419,  420,
-  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,
-   -1,  275,  276,  277,  418,  279,   -1,   -1,  265,   -1,
-  267,  285,   -1,  270,  288,   -1,   -1,   -1,  275,   -1,
-   -1,  295,  279,   -1,   -1,   -1,  300,   -1,  302,  303,
-  304,  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,
-   -1,   -1,  316,  300,  318,  319,   -1,  304,  322,   -1,
-   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,  316,
-  334,  318,   -1,   -1,   -1,  322,   -1,  341,   -1,   -1,
-  344,  345,   -1,  330,  331,   -1,   -1,  334,   -1,   -1,
-  337,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,
-   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,
-  384,   -1,  386,   -1,   -1,   -1,   -1,   -1,  392,  393,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,
-   -1,   -1,   -1,  417,  418,  419,  420,  264,  265,   -1,
+  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,
+  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,  256,
+   -1,   -1,   -1,   -1,  393,  394,   -1,  264,  265,   -1,
   267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,
-  277,  418,  279,   -1,   -1,   -1,   -1,   -1,  285,   -1,
-   -1,  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,
+  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  418,
+  419,  288,  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,
    -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,
    -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,
   327,   -1,  329,  330,  331,  332,   -1,  334,   -1,   -1,
-   -1,   -1,   -1,   -1,  341,   -1,   -1,  344,  345,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,
-  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,
-   -1,   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,
+   -1,  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,
+  387,  256,   -1,   -1,   -1,   -1,  393,  394,   -1,  264,
+  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,
+  275,  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,
+  285,  418,  419,  288,  421,   -1,   -1,   -1,   -1,   -1,
+  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  256,   -1,
-  417,  418,  419,  420,  262,   -1,  264,  265,   -1,  267,
-   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,
-   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,   -1,   -1,
-  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,
-  298,   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,
-  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,
-   -1,  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,
+   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,
+  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  371,   -1,  373,   -1,   -1,   -1,  377,
-  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,  256,
-   -1,   -1,   -1,   -1,  392,  393,   -1,  264,  265,   -1,
+   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,
+   -1,   -1,   -1,  378,  379,  380,  381,   -1,   -1,   -1,
+  385,   -1,  387,  256,   -1,   -1,   -1,   -1,  393,  394,
+   -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,
+   -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,   -1,
+   -1,   -1,  285,  418,  419,  288,  421,   -1,   -1,   -1,
+   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,
+  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,
+   -1,   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,
+   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,
+  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,
+   -1,   -1,   -1,   -1,   -1,  378,  379,  380,  381,   -1,
+   -1,   -1,  385,   -1,  387,  256,   -1,   -1,   -1,   -1,
+  393,  394,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
+  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,
+   -1,   -1,   -1,   -1,  285,  418,  419,  288,  421,   -1,
+   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,
+   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,
+   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,
+  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
+  361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,   -1,  387,  256,   -1,   -1,
+   -1,   -1,  393,  394,   -1,  264,  265,   -1,  267,   -1,
+   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,
+  279,   -1,   -1,   -1,   -1,   -1,  285,  418,  419,  288,
+  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
+   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,
+  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,
+  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,
+  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,  256,
+   -1,   -1,   -1,   -1,  393,  394,   -1,  264,  265,   -1,
   267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,
-  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  417,
-  418,  288,  420,   -1,   -1,   -1,   -1,   -1,  295,   -1,
+  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  418,
+  419,  288,  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,
    -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,
    -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,
@@ -13861,25 +14490,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  371,   -1,  373,   -1,   -1,   -1,
-  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,
-  256,   -1,   -1,   -1,   -1,  392,  393,   -1,  264,  265,
-   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,
-  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,
-  417,  418,  288,  420,   -1,   -1,   -1,   -1,   -1,  295,
-   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,
-   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,
-   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,
-  386,  256,   -1,   -1,   -1,   -1,  392,  393,   -1,  264,
+   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,
+   -1,  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,
+  387,  256,   -1,   -1,   -1,   -1,  393,  394,   -1,  264,
   265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,
   275,  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,
-  285,  417,  418,  288,  420,   -1,   -1,   -1,   -1,   -1,
+  285,  418,  419,  288,  421,   -1,   -1,   -1,   -1,   -1,
   295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,
@@ -13887,25 +14503,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,
-   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,
-   -1,  386,  256,   -1,   -1,   -1,   -1,  392,  393,   -1,
-  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,
-   -1,  275,  276,  277,   -1,  279,   -1,   -1,   -1,   -1,
-   -1,  285,  417,  418,  288,  420,   -1,   -1,   -1,   -1,
-   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,
-  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
-   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,
-  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,
-   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,
-  384,   -1,  386,  256,   -1,   -1,   -1,   -1,  392,  393,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,
+   -1,   -1,   -1,  378,  379,  380,  381,   -1,   -1,   -1,
+  385,   -1,  387,  256,   -1,   -1,   -1,   -1,  393,  394,
    -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,
    -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,   -1,
-   -1,   -1,  285,  417,  418,  288,  420,   -1,   -1,   -1,
+   -1,   -1,  285,  418,  419,  288,  421,   -1,   -1,   -1,
    -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,
   303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,
@@ -13913,25 +14516,12 @@ void case_1053()
    -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,
-  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,
-   -1,   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,
-   -1,  384,   -1,  386,  256,   -1,   -1,   -1,   -1,  392,
-  393,   -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,
-   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,
-   -1,   -1,   -1,  285,  417,  418,  288,  420,   -1,   -1,
-   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,
-  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,
-  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,  331,
-  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,
-  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,
-   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,   -1,
-   -1,   -1,  384,   -1,  386,  256,   -1,   -1,   -1,   -1,
-  392,  393,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
+  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,
+   -1,   -1,   -1,   -1,   -1,  378,  379,  380,  381,   -1,
+   -1,   -1,  385,   -1,  387,  256,   -1,   -1,   -1,   -1,
+  393,  394,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
   271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,
-   -1,   -1,   -1,   -1,  285,  417,  418,  288,  420,   -1,
+   -1,   -1,   -1,   -1,  285,  418,  419,  288,  421,   -1,
    -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,
    -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,
@@ -13940,25 +14530,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
   361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,
-   -1,   -1,   -1,  384,   -1,  386,  256,   -1,   -1,   -1,
-   -1,  392,  393,   -1,  264,  265,   -1,  267,   -1,   -1,
-  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,
-   -1,   -1,   -1,   -1,   -1,  285,  417,  418,  288,  420,
-   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,
-  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,
-   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,
-  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,
-  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,
-  380,   -1,   -1,   -1,  384,   -1,  386,  256,   -1,   -1,
-   -1,   -1,  392,  393,   -1,  264,  265,   -1,  267,   -1,
+   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,   -1,  387,  256,   -1,   -1,
+   -1,   -1,  393,  394,   -1,  264,  265,   -1,  267,   -1,
    -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,
-  279,   -1,   -1,   -1,   -1,   -1,  285,  417,  418,  288,
-  420,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
+  279,   -1,   -1,   -1,   -1,   -1,  285,  418,  419,  288,
+  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
    -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,
   319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,
@@ -13966,25 +14543,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,  378,
-  379,  380,   -1,   -1,   -1,  384,   -1,  386,  256,   -1,
-   -1,   -1,   -1,  392,  393,   -1,  264,  265,   -1,  267,
-   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,
-   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  417,  418,
-  288,  420,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,
-   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,
-  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,
-   -1,  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,
-  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,  256,
-   -1,   -1,   -1,   -1,  392,  393,   -1,  264,  265,   -1,
+   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,
+  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,  256,
+   -1,   -1,   -1,   -1,  393,  394,   -1,  264,  265,   -1,
   267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,
-  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  417,
-  418,  288,  420,   -1,   -1,   -1,   -1,   -1,  295,   -1,
+  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  418,
+  419,  288,  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,
    -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,
    -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,
@@ -13992,25 +14556,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,
-  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,
-  256,   -1,   -1,   -1,   -1,  392,  393,   -1,  264,  265,
-   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,
-  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,
-  417,  418,  288,  420,   -1,   -1,   -1,   -1,   -1,  295,
-   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,
-   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,
-   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,
-  386,  256,   -1,   -1,   -1,   -1,  392,  393,   -1,  264,
+   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,
+   -1,  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,
+  387,  256,   -1,   -1,   -1,   -1,  393,  394,   -1,  264,
   265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,
   275,  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,
-  285,  417,  418,  288,  420,   -1,   -1,   -1,   -1,   -1,
+  285,  418,  419,  288,  421,   -1,   -1,   -1,   -1,   -1,
   295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,
@@ -14018,25 +14569,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,
-   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,
-   -1,  386,  256,   -1,   -1,   -1,   -1,  392,  393,   -1,
-  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,
-   -1,  275,  276,  277,   -1,  279,   -1,   -1,   -1,   -1,
-   -1,  285,  417,  418,  288,  420,   -1,   -1,   -1,   -1,
-   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,
-  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
-   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,
-  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,
-   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,
-  384,   -1,  386,  256,   -1,   -1,   -1,   -1,  392,  393,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,
+   -1,   -1,   -1,  378,  379,  380,  381,   -1,   -1,   -1,
+  385,   -1,  387,  256,   -1,   -1,   -1,   -1,  393,  394,
    -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,
    -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,   -1,
-   -1,   -1,  285,  417,  418,  288,  420,   -1,   -1,   -1,
+   -1,   -1,  285,  418,  419,  288,  421,   -1,   -1,   -1,
    -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,
   303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,
@@ -14044,25 +14582,12 @@ void case_1053()
    -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,
-  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,
-   -1,   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,
-   -1,  384,   -1,  386,  256,   -1,   -1,   -1,   -1,  392,
-  393,   -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,
-   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,
-   -1,   -1,   -1,  285,  417,  418,  288,  420,   -1,   -1,
-   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,
-  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,
-  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,  331,
-  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,
-  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,
-   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,   -1,
-   -1,   -1,  384,   -1,  386,  256,   -1,   -1,   -1,   -1,
-  392,  393,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
+  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,
+   -1,   -1,   -1,   -1,   -1,  378,  379,  380,  381,   -1,
+   -1,   -1,  385,   -1,  387,  256,   -1,   -1,   -1,   -1,
+  393,  394,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
   271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,
-   -1,   -1,   -1,   -1,  285,  417,  418,  288,  420,   -1,
+   -1,   -1,   -1,   -1,  285,  418,  419,  288,  421,   -1,
    -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,
    -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,
@@ -14071,25 +14596,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
   361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,
-   -1,   -1,   -1,  384,   -1,  386,  256,   -1,   -1,   -1,
-   -1,  392,  393,   -1,  264,  265,   -1,  267,   -1,   -1,
-  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,
-   -1,   -1,   -1,   -1,   -1,  285,  417,  418,  288,  420,
-   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,
-  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,
-   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,
-  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,
-  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,
-  380,   -1,   -1,   -1,  384,   -1,  386,  256,   -1,   -1,
-   -1,   -1,  392,  393,   -1,  264,  265,   -1,  267,   -1,
+   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,   -1,  387,  256,   -1,   -1,
+   -1,   -1,  393,  394,   -1,  264,  265,   -1,  267,   -1,
    -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,
-  279,   -1,   -1,   -1,   -1,   -1,  285,  417,  418,  288,
-  420,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
+  279,   -1,   -1,   -1,   -1,   -1,  285,  418,  419,  288,
+  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
    -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,
   319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,
@@ -14097,25 +14609,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,  378,
-  379,  380,   -1,   -1,   -1,  384,   -1,  386,  256,   -1,
-   -1,   -1,   -1,  392,  393,   -1,  264,  265,   -1,  267,
-   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,
-   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  417,  418,
-  288,  420,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,
-   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,
-  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,
-   -1,  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,
-  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,  256,
-   -1,   -1,   -1,   -1,  392,  393,   -1,  264,  265,   -1,
+   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,
+  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,  256,
+   -1,   -1,   -1,   -1,  393,  394,   -1,  264,  265,   -1,
   267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,
-  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  417,
-  418,  288,  420,   -1,   -1,   -1,   -1,   -1,  295,   -1,
+  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  418,
+  419,  288,  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,
    -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,
    -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,
@@ -14123,25 +14622,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,
-  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,
-  256,   -1,   -1,   -1,   -1,  392,  393,   -1,  264,  265,
-   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,
-  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,
-  417,  418,  288,  420,   -1,   -1,   -1,   -1,   -1,  295,
-   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,
-   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,
-   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,
-  386,  256,   -1,   -1,   -1,   -1,  392,  393,   -1,  264,
+   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,
+   -1,  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,
+  387,  256,   -1,   -1,   -1,   -1,  393,  394,   -1,  264,
   265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,
   275,  276,  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,
-  285,  417,  418,  288,  420,   -1,   -1,   -1,   -1,   -1,
+  285,  418,  419,  288,  421,   -1,   -1,   -1,   -1,   -1,
   295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,
@@ -14149,25 +14635,12 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,
-   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,
-   -1,  386,  256,   -1,   -1,   -1,   -1,  392,  393,   -1,
-  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,
-   -1,  275,  276,  277,   -1,  279,   -1,   -1,   -1,   -1,
-   -1,  285,  417,  418,  288,  420,   -1,   -1,   -1,   -1,
-   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,
-  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
-   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,
-  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,
-   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,
-  384,   -1,  386,  256,   -1,   -1,   -1,   -1,  392,  393,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,
+   -1,   -1,   -1,  378,  379,  380,  381,   -1,   -1,   -1,
+  385,   -1,  387,  256,   -1,   -1,   -1,   -1,  393,  394,
    -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,
    -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,   -1,
-   -1,   -1,  285,  417,  418,  288,  420,   -1,   -1,   -1,
+   -1,   -1,  285,  418,  419,  288,  421,   -1,   -1,   -1,
    -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,
   303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,
@@ -14175,25 +14648,12 @@ void case_1053()
    -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,
-  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,
-   -1,   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,
-   -1,  384,   -1,  386,  256,   -1,   -1,   -1,   -1,  392,
-  393,   -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,
-   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,
-   -1,   -1,   -1,  285,  417,  418,  288,  420,   -1,   -1,
-   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,
-  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,
-  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,  331,
-  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,
-  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,
-   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,   -1,
-   -1,   -1,  384,   -1,  386,  256,   -1,   -1,   -1,   -1,
-  392,  393,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
+  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,
+   -1,   -1,   -1,   -1,   -1,  378,  379,  380,  381,   -1,
+   -1,   -1,  385,   -1,  387,  256,   -1,   -1,   -1,   -1,
+  393,  394,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
   271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,
-   -1,   -1,   -1,   -1,  285,  417,  418,  288,  420,   -1,
+   -1,   -1,   -1,   -1,  285,  418,  419,  288,  421,   -1,
    -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,
    -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,
@@ -14202,179 +14662,212 @@ void case_1053()
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
   361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,
-   -1,   -1,   -1,  384,   -1,  386,  256,   -1,   -1,   -1,
-   -1,  392,  393,   -1,  264,  265,   -1,  267,   -1,   -1,
-  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,
-   -1,   -1,   -1,   -1,   -1,  285,  417,  418,  288,  420,
-   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,
-  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,
-   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,
-  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,
-  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,
-  380,   -1,   -1,   -1,  384,   -1,  386,  256,   -1,   -1,
-   -1,   -1,  392,  393,  262,  264,  265,   -1,  267,   -1,
+   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,   -1,  387,  256,   -1,   -1,
+   -1,   -1,  393,  394,   -1,  264,  265,   -1,  267,   -1,
    -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,
-  279,   -1,   -1,   -1,   -1,   -1,  285,  417,  418,  288,
-  420,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
-  298,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
+  279,   -1,   -1,   -1,   -1,   -1,  285,  418,  419,  288,
+  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
+   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,
   319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,
   329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
   359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  371,  371,  372,  373,  374,  375,   -1,   -1,
-  378,  379,   -1,   -1,  382,  383,  384,  385,  386,  387,
-  388,  389,  390,   -1,  392,  393,  394,  395,  396,  397,
-  398,  399,  400,  401,  402,  403,  404,  405,  406,  407,
-  408,  409,  410,  411,  412,  413,   -1,   -1,  417,  418,
-   -1,   -1,  420,   -1,  261,  423,  263,   -1,  265,   -1,
-  267,   -1,   -1,  270,   -1,  272,  273,   -1,  275,   -1,
-  277,   -1,  279,   -1,  281,  282,  283,  284,   -1,   -1,
-  287,  288,   -1,   -1,   -1,   -1,  293,  294,  295,  296,
-  297,   -1,   -1,  300,   -1,  302,   -1,  304,   -1,  306,
-  307,   -1,  309,  310,  311,  312,   -1,   -1,  315,  316,
-  317,  318,   -1,   -1,  321,  322,  323,   -1,   -1,   -1,
-   -1,   -1,   -1,  330,  331,   -1,  333,  334,   -1,  336,
-  337,  338,   -1,   -1,   -1,  342,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,
+  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,  256,
+   -1,   -1,   -1,   -1,  393,  394,   -1,  264,  265,   -1,
+  267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,
+  277,   -1,  279,   -1,   -1,   -1,   -1,   -1,  285,  418,
+  419,  288,  421,   -1,   -1,   -1,   -1,   -1,  295,   -1,
+   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,
+   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,
+  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  362,   -1,  364,  365,  261,
-   -1,   -1,   -1,  265,   -1,  267,   -1,   -1,  270,   -1,
-  272,  273,   -1,  275,   -1,  277,   -1,  279,   -1,  281,
-  282,  283,  284,   -1,   -1,  287,  288,   -1,   -1,   -1,
-   -1,  293,   -1,  295,  296,  297,   -1,   -1,  300,   -1,
-  302,   -1,  304,   -1,   -1,  307,   -1,  309,  310,  311,
-  312,  418,   -1,   -1,  316,  317,  318,   -1,   -1,  321,
-  322,  323,   -1,   -1,   -1,   -1,   -1,   -1,  330,  331,
-   -1,  333,  334,   -1,  336,  337,  338,   -1,   -1,   -1,
-  342,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  261,   -1,
-  362,   -1,  265,   -1,  267,   -1,  368,  270,   -1,  272,
-  273,   -1,  275,   -1,  277,  377,  279,   -1,  281,  282,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,
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-   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,
-  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
-   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,
-  334,   -1,   -1,  337,   -1,   -1,   -1,  341,   -1,   -1,
-  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,
-   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,
-  384,   -1,  386,   -1,   -1,   -1,   -1,   -1,  392,  393,
-   -1,   -1,   -1,   -1,   -1,   -1,  264,  265,   -1,  267,
-   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,
-   -1,  279,   -1,  417,  418,  419,  420,  285,   -1,   -1,
-  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,
-   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,
-  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,
-   -1,  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,
-   -1,   -1,   -1,  341,   -1,   -1,  344,  345,   -1,   -1,
+   -1,   -1,  372,  373,   -1,  375,   -1,   -1,  378,  379,
+  380,  381,   -1,   -1,   -1,  385,   -1,  387,   -1,   -1,
+   -1,   -1,   -1,  393,  394,   -1,   -1,   -1,   -1,   -1,
+   -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,
+   -1,   -1,  275,  276,  277,   -1,  279,   -1,  418,  419,
+  420,  421,  285,   -1,   -1,  288,   -1,   -1,   -1,   -1,
+   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,
+  303,  304,   -1,  306,   -1,   -1,   -1,   -1,   -1,   -1,
+  313,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,
+   -1,   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,
+   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,  341,   -1,
+   -1,  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,
+  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,
+   -1,   -1,  375,   -1,   -1,  378,  379,  380,  381,   -1,
+   -1,   -1,  385,   -1,  387,   -1,   -1,   -1,   -1,   -1,
+  393,  394,   -1,   -1,   -1,   -1,   -1,   -1,  264,  265,
+   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,
+  276,  277,   -1,  279,   -1,  418,  419,  420,  421,  285,
+   -1,   -1,  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,
+   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,
+   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,
+   -1,  337,   -1,   -1,   -1,  341,   -1,   -1,  344,  345,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,  367,
-   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,
-  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,   -1,
-   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,   -1,
+   -1,   -1,  378,  379,  380,  381,   -1,   -1,   -1,  385,
+   -1,  387,   -1,   -1,   -1,   -1,   -1,  393,  394,   -1,
+   -1,   -1,   -1,   -1,   -1,  264,  265,   -1,  267,   -1,
+   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,
+  279,   -1,  418,  419,  420,  421,  285,   -1,   -1,  288,
+   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,
+   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,
+  319,   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,
+  329,  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,
+   -1,   -1,  341,   -1,   -1,  344,  345,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,  368,
+   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,
+  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,   -1,
+   -1,   -1,   -1,   -1,  393,  394,   -1,   -1,   -1,   -1,
    -1,   -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,
-   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,  417,
-  418,  419,  420,  285,   -1,   -1,  288,   -1,   -1,   -1,
+   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,  418,
+  419,  420,  421,  285,   -1,   -1,  288,   -1,   -1,   -1,
    -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,
   302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,
@@ -14382,53 +14875,26 @@ void case_1053()
   332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,  341,
    -1,   -1,  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,  361,
-  362,  363,   -1,   -1,   -1,  367,   -1,   -1,   -1,  371,
-   -1,   -1,   -1,   -1,   -1,  377,  378,  379,  380,   -1,
-   -1,   -1,  384,   -1,  386,   -1,   -1,   -1,   -1,   -1,
-  392,  393,   -1,   -1,   -1,   -1,   -1,   -1,  264,  265,
-   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,
-  276,  277,   -1,  279,   -1,  417,  418,  419,  420,  285,
-   -1,   -1,  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,
-   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,
-   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,
-   -1,   -1,   -1,   -1,   -1,  341,   -1,   -1,  344,  345,
+  362,  363,   -1,   -1,   -1,   -1,  368,   -1,   -1,   -1,
+  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,  381,
+   -1,   -1,   -1,  385,   -1,  387,   -1,   -1,   -1,   -1,
+   -1,  393,  394,   -1,   -1,   -1,   -1,   -1,   -1,  264,
+  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,   -1,
+  275,  276,  277,   -1,  279,   -1,  418,  419,  420,  421,
+  285,   -1,   -1,  288,   -1,   -1,   -1,   -1,   -1,   -1,
+  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,  304,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,
-   -1,  377,  378,  379,  380,   -1,   -1,   -1,  384,   -1,
-  386,   -1,   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,
-   -1,   -1,   -1,   -1,  264,  265,   -1,  267,   -1,   -1,
-  270,  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,
-   -1,  417,  418,  419,  420,  285,   -1,   -1,  288,   -1,
-   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,
-  300,   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,
-   -1,   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,
-  330,  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,
-   -1,  341,   -1,   -1,  344,  345,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,
-  360,  361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,  378,  379,
-  380,   -1,   -1,   -1,  384,   -1,  386,   -1,   -1,   -1,
-   -1,   -1,  392,  393,   -1,   -1,   -1,   -1,   -1,   -1,
-  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,
-   -1,  275,  276,  277,   -1,  279,   -1,  417,  418,  419,
-  420,  285,   -1,   -1,  288,   -1,   -1,   -1,   -1,   -1,
-   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,
-  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
-   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,
-  334,   -1,   -1,   -1,   -1,   -1,   -1,  341,   -1,   -1,
-  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
-   -1,   -1,   -1,   -1,   -1,   -1,   -1,  371,   -1,   -1,
-   -1,   -1,   -1,  377,  378,  379,  380,   -1,   -1,   -1,
-  384,   -1,  386,   -1,   -1,   -1,   -1,   -1,  392,  393,
+   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,   -1,
+  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,  334,
+   -1,   -1,   -1,   -1,   -1,   -1,  341,   -1,   -1,  344,
+  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,
+   -1,   -1,   -1,  378,  379,  380,  381,   -1,   -1,   -1,
+  385,   -1,  387,   -1,   -1,   -1,   -1,   -1,  393,  394,
    -1,   -1,   -1,   -1,   -1,   -1,  264,  265,   -1,  267,
    -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,  277,
-   -1,  279,   -1,  417,  418,  419,  420,  285,   -1,   -1,
+   -1,  279,   -1,  418,  419,  420,  421,  285,   -1,   -1,
   288,   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,   -1,
    -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,   -1,
@@ -14437,159 +14903,191 @@ void case_1053()
    -1,   -1,   -1,  341,   -1,   -1,  344,  345,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  371,   -1,   -1,   -1,   -1,   -1,  377,
-  378,  379,  380,   -1,   -1,   -1,  384,   -1,  386,   -1,
-   -1,   -1,   -1,   -1,  392,  393,   -1,   -1,   -1,   -1,
-   -1,   -1,  264,  265,   -1,  267,   -1,   -1,  270,  271,
-   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,  417,
-  418,  419,  420,  285,   -1,   -1,  288,   -1,   -1,   -1,
-   -1,   -1,   -1,  295,   -1,  261,   -1,   -1,  300,   -1,
+   -1,   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,   -1,
+  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,  387,
+   -1,   -1,   -1,   -1,   -1,  393,  394,   -1,   -1,   -1,
+   -1,   -1,   -1,  264,  265,   -1,  267,   -1,   -1,  270,
+  271,   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,
+  418,  419,  420,  421,  285,   -1,   -1,  288,   -1,   -1,
+   -1,   -1,   -1,   -1,  295,   -1,   -1,   -1,   -1,  300,
+   -1,  302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,
+   -1,  322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,
+  331,  332,   -1,  334,   -1,   -1,   -1,   -1,   -1,   -1,
+  341,   -1,   -1,  344,  345,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  359,  360,
+  361,  362,  363,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,  372,   -1,   -1,   -1,   -1,   -1,  378,  379,  380,
+  381,   -1,   -1,   -1,  385,   -1,  387,   -1,   -1,   -1,
+   -1,   -1,  393,  394,   -1,   -1,   -1,   -1,   -1,   -1,
+  264,  265,   -1,  267,   -1,   -1,  270,  271,   -1,   -1,
+   -1,  275,  276,  277,   -1,  279,   -1,  418,  419,  420,
+  421,  285,   -1,   -1,  288,   -1,   -1,   -1,   -1,   -1,
+   -1,  295,   -1,   -1,   -1,   -1,  300,   -1,  302,  303,
+  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,  316,   -1,  318,  319,   -1,   -1,  322,   -1,
+   -1,  325,   -1,  327,   -1,  329,  330,  331,  332,   -1,
+  334,   -1,   -1,   -1,   -1,   -1,   -1,  341,   -1,   -1,
+  344,  345,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  359,  360,  361,  362,  363,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  372,   -1,
+   -1,   -1,   -1,   -1,  378,  379,  380,  381,   -1,   -1,
+   -1,  385,   -1,  387,   -1,   -1,   -1,   -1,   -1,  393,
+  394,   -1,   -1,   -1,   -1,   -1,   -1,  264,  265,   -1,
+  267,   -1,   -1,  270,  271,   -1,   -1,   -1,  275,  276,
+  277,   -1,  279,   -1,  418,  419,  420,  421,  285,   -1,
+   -1,  288,   -1,   -1,   -1,   -1,   -1,   -1,  295,   -1,
+   -1,   -1,   -1,  300,   -1,  302,  303,  304,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  316,
+   -1,  318,  319,   -1,   -1,  322,   -1,   -1,  325,   -1,
+  327,   -1,  329,  330,  331,  332,   -1,  334,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
+   -1,   -1,  359,  360,  361,  362,  363,   -1,   -1,   -1,
+   -1,   -1,   -1,   -1,   -1,  372,   -1,   -1,   -1,   -1,
+   -1,  378,  379,  380,  381,   -1,   -1,   -1,  385,   -1,
+  387,   -1,  264,  265,   -1,  267,  393,  394,  270,  271,
+   -1,   -1,   -1,  275,  276,  277,   -1,  279,   -1,   -1,
+   -1,   -1,   -1,  285,   -1,   -1,  288,   -1,   -1,   -1,
+   -1,  418,  419,  295,  421,   -1,   -1,   -1,  300,   -1,
   302,  303,  304,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,   -1,  316,   -1,  318,  319,  284,   -1,
+   -1,   -1,   -1,   -1,  316,   -1,  318,  319,   -1,   -1,
   322,   -1,   -1,  325,   -1,  327,   -1,  329,  330,  331,
-  332,  297,  334,   -1,   -1,   -1,  302,   -1,   -1,   -1,
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-   -1,   -1,  321,   -1,  261,  362,   -1,   -1,  297,   -1,
-   -1,  368,  301,  302,  333,   -1,   -1,  336,  307,  338,
-  309,  310,  311,  312,   -1,   -1,   -1,  284,  317,   -1,
-   -1,   -1,  321,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
-  297,   -1,   -1,  362,  333,  302,   -1,  336,   -1,  338,
+  309,  310,  311,  312,   -1,   -1,   -1,   -1,  317,   -1,
+   -1,   -1,  321,   -1,   -1,  362,   -1,   -1,   -1,   -1,
+   -1,   -1,  369,  370,  333,   -1,   -1,  336,  261,  338,
+   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,  272,
+   -1,   -1,   -1,   -1,  277,   -1,   -1,   -1,  281,   -1,
+   -1,  284,   -1,  362,   -1,   -1,   -1,   -1,   -1,   -1,
+  369,  370,   -1,  296,  297,   -1,   -1,   -1,  301,  302,
+   -1,  261,   -1,   -1,  307,   -1,  309,  310,  311,  312,
+   -1,   -1,  272,   -1,  317,   -1,   -1,  277,  321,   -1,
+  323,  281,   -1,   -1,  284,   -1,   -1,   -1,   -1,   -1,
+  333,   -1,   -1,  336,   -1,  338,  296,  297,   -1,  342,
+   -1,  301,  302,   -1,  261,   -1,   -1,  307,   -1,  309,
+  310,  311,  312,   -1,   -1,   -1,   -1,  317,   -1,  362,
+   -1,  321,   -1,  323,   -1,   -1,  369,  284,   -1,   -1,
+   -1,   -1,   -1,  333,   -1,   -1,  336,   -1,  338,   -1,
+  297,   -1,  342,   -1,  261,  302,   -1,   -1,   -1,   -1,
+  307,   -1,  309,  310,  311,  312,   -1,   -1,   -1,   -1,
+  317,   -1,  362,   -1,  321,   -1,   -1,  284,   -1,  369,
+   -1,   -1,   -1,   -1,   -1,   -1,  333,   -1,   -1,  336,
+  297,  338,   -1,   -1,  261,  302,   -1,   -1,   -1,   -1,
   307,   -1,  309,  310,  311,  312,   -1,   -1,   -1,   -1,
+  317,   -1,   -1,   -1,  321,  362,   -1,  284,  365,  366,
+   -1,   -1,  369,   -1,   -1,   -1,  333,   -1,   -1,  336,
+  297,  338,   -1,   -1,  261,  302,  263,   -1,   -1,   -1,
+  307,   -1,  309,  310,  311,  312,   -1,   -1,  315,   -1,
+  317,   -1,   -1,   -1,  321,  362,   -1,  284,  365,  366,
+   -1,   -1,  369,   -1,  261,   -1,  333,   -1,   -1,  336,
+  297,  338,   -1,   -1,   -1,  302,   -1,   -1,   -1,   -1,
+  307,   -1,  309,  310,  311,  312,   -1,  284,   -1,   -1,
+  317,   -1,   -1,   -1,  321,  362,   -1,   -1,   -1,   -1,
+  297,   -1,  369,   -1,  261,  302,  333,   -1,   -1,  336,
+  307,  338,  309,  310,  311,  312,   -1,   -1,   -1,   -1,
+  317,   -1,   -1,   -1,  321,   -1,   -1,  284,   -1,   -1,
+   -1,   -1,   -1,   -1,  261,  362,  333,   -1,   -1,  336,
+  297,  338,  369,   -1,  301,  302,   -1,   -1,   -1,   -1,
+  307,   -1,  309,  310,  311,  312,   -1,  284,   -1,   -1,
+  317,   -1,   -1,   -1,  321,  362,   -1,   -1,  365,  366,
+  297,   -1,   -1,   -1,   -1,  302,  333,   -1,   -1,  336,
+  307,  338,  309,  310,  311,  312,   -1,   -1,   -1,   -1,
   317,   -1,   -1,   -1,  321,   -1,   -1,   -1,   -1,   -1,
-   -1,   -1,   -1,  362,   -1,   -1,  333,   -1,   -1,  336,
+   -1,   -1,   -1,   -1,   -1,  362,  333,   -1,   -1,  336,
    -1,  338,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,   -1,
    -1,   -1,   -1,   -1,   -1,  362,
   };
 
-#line 7153 "cs-parser.jay"
+#line 7338 "cs-parser.jay"
 
 // <summary>
 //  A class used to hold info about an operator declarator
@@ -15632,73 +16130,74 @@ namespace yydebug {
   public const int MAKEREF = 361;
   public const int ASYNC = 362;
   public const int AWAIT = 363;
-  public const int GET = 364;
-  public const int SET = 365;
-  public const int LAST_KEYWORD = 366;
-  public const int OPEN_BRACE = 367;
-  public const int CLOSE_BRACE = 368;
-  public const int OPEN_BRACKET = 369;
-  public const int CLOSE_BRACKET = 370;
-  public const int OPEN_PARENS = 371;
-  public const int CLOSE_PARENS = 372;
-  public const int DOT = 373;
-  public const int COMMA = 374;
-  public const int COLON = 375;
-  public const int SEMICOLON = 376;
-  public const int TILDE = 377;
-  public const int PLUS = 378;
-  public const int MINUS = 379;
-  public const int BANG = 380;
-  public const int ASSIGN = 381;
-  public const int OP_LT = 382;
-  public const int OP_GT = 383;
-  public const int BITWISE_AND = 384;
-  public const int BITWISE_OR = 385;
-  public const int STAR = 386;
-  public const int PERCENT = 387;
-  public const int DIV = 388;
-  public const int CARRET = 389;
-  public const int INTERR = 390;
-  public const int DOUBLE_COLON = 391;
-  public const int OP_INC = 392;
-  public const int OP_DEC = 393;
-  public const int OP_SHIFT_LEFT = 394;
-  public const int OP_SHIFT_RIGHT = 395;
-  public const int OP_LE = 396;
-  public const int OP_GE = 397;
-  public const int OP_EQ = 398;
-  public const int OP_NE = 399;
-  public const int OP_AND = 400;
-  public const int OP_OR = 401;
-  public const int OP_MULT_ASSIGN = 402;
-  public const int OP_DIV_ASSIGN = 403;
-  public const int OP_MOD_ASSIGN = 404;
-  public const int OP_ADD_ASSIGN = 405;
-  public const int OP_SUB_ASSIGN = 406;
-  public const int OP_SHIFT_LEFT_ASSIGN = 407;
-  public const int OP_SHIFT_RIGHT_ASSIGN = 408;
-  public const int OP_AND_ASSIGN = 409;
-  public const int OP_XOR_ASSIGN = 410;
-  public const int OP_OR_ASSIGN = 411;
-  public const int OP_PTR = 412;
-  public const int OP_COALESCING = 413;
-  public const int OP_GENERICS_LT = 414;
-  public const int OP_GENERICS_LT_DECL = 415;
-  public const int OP_GENERICS_GT = 416;
-  public const int LITERAL = 417;
-  public const int IDENTIFIER = 418;
-  public const int OPEN_PARENS_LAMBDA = 419;
-  public const int OPEN_PARENS_CAST = 420;
-  public const int GENERIC_DIMENSION = 421;
-  public const int DEFAULT_COLON = 422;
-  public const int OPEN_BRACKET_EXPR = 423;
-  public const int EVAL_STATEMENT_PARSER = 424;
-  public const int EVAL_COMPILATION_UNIT_PARSER = 425;
-  public const int EVAL_USING_DECLARATIONS_UNIT_PARSER = 426;
-  public const int DOC_SEE = 427;
-  public const int GENERATE_COMPLETION = 428;
-  public const int COMPLETE_COMPLETION = 429;
-  public const int UMINUS = 430;
+  public const int INTERR_OPERATOR = 364;
+  public const int GET = 365;
+  public const int SET = 366;
+  public const int LAST_KEYWORD = 367;
+  public const int OPEN_BRACE = 368;
+  public const int CLOSE_BRACE = 369;
+  public const int OPEN_BRACKET = 370;
+  public const int CLOSE_BRACKET = 371;
+  public const int OPEN_PARENS = 372;
+  public const int CLOSE_PARENS = 373;
+  public const int DOT = 374;
+  public const int COMMA = 375;
+  public const int COLON = 376;
+  public const int SEMICOLON = 377;
+  public const int TILDE = 378;
+  public const int PLUS = 379;
+  public const int MINUS = 380;
+  public const int BANG = 381;
+  public const int ASSIGN = 382;
+  public const int OP_LT = 383;
+  public const int OP_GT = 384;
+  public const int BITWISE_AND = 385;
+  public const int BITWISE_OR = 386;
+  public const int STAR = 387;
+  public const int PERCENT = 388;
+  public const int DIV = 389;
+  public const int CARRET = 390;
+  public const int INTERR = 391;
+  public const int DOUBLE_COLON = 392;
+  public const int OP_INC = 393;
+  public const int OP_DEC = 394;
+  public const int OP_SHIFT_LEFT = 395;
+  public const int OP_SHIFT_RIGHT = 396;
+  public const int OP_LE = 397;
+  public const int OP_GE = 398;
+  public const int OP_EQ = 399;
+  public const int OP_NE = 400;
+  public const int OP_AND = 401;
+  public const int OP_OR = 402;
+  public const int OP_MULT_ASSIGN = 403;
+  public const int OP_DIV_ASSIGN = 404;
+  public const int OP_MOD_ASSIGN = 405;
+  public const int OP_ADD_ASSIGN = 406;
+  public const int OP_SUB_ASSIGN = 407;
+  public const int OP_SHIFT_LEFT_ASSIGN = 408;
+  public const int OP_SHIFT_RIGHT_ASSIGN = 409;
+  public const int OP_AND_ASSIGN = 410;
+  public const int OP_XOR_ASSIGN = 411;
+  public const int OP_OR_ASSIGN = 412;
+  public const int OP_PTR = 413;
+  public const int OP_COALESCING = 414;
+  public const int OP_GENERICS_LT = 415;
+  public const int OP_GENERICS_LT_DECL = 416;
+  public const int OP_GENERICS_GT = 417;
+  public const int LITERAL = 418;
+  public const int IDENTIFIER = 419;
+  public const int OPEN_PARENS_LAMBDA = 420;
+  public const int OPEN_PARENS_CAST = 421;
+  public const int GENERIC_DIMENSION = 422;
+  public const int DEFAULT_COLON = 423;
+  public const int OPEN_BRACKET_EXPR = 424;
+  public const int EVAL_STATEMENT_PARSER = 425;
+  public const int EVAL_COMPILATION_UNIT_PARSER = 426;
+  public const int EVAL_USING_DECLARATIONS_UNIT_PARSER = 427;
+  public const int DOC_SEE = 428;
+  public const int GENERATE_COMPLETION = 429;
+  public const int COMPLETE_COMPLETION = 430;
+  public const int UMINUS = 431;
   public const int yyErrorCode = 256;
  }
  namespace yyParser {
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.jay b/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.jay
index f3c9ae00..25df449f 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.jay
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.jay
@@ -265,6 +265,7 @@ namespace Mono.CSharp
 %token MAKEREF
 %token ASYNC
 %token AWAIT
+%token INTERR_OPERATOR
 
 /* C# keywords which are not really keywords */
 %token GET
@@ -945,6 +946,7 @@ class_member_declaration
 	| indexer_declaration
 	| operator_declaration
 	| constructor_declaration
+	| primary_constructor_body
 	| destructor_declaration
 	| type_declaration
 	| attributes_without_members
@@ -958,6 +960,33 @@ class_member_declaration
 	  }	
 	;
 
+primary_constructor_body
+	: OPEN_BRACE
+	  {
+		current_local_parameters = current_type.PrimaryConstructorParameters;
+		if (current_local_parameters == null) {
+			report.Error (9010, GetLocation ($1), "Primary constructor body is not allowed");
+			current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
+		}
+
+		++lexer.parsing_block;
+		start_block (GetLocation ($1));
+	  }
+	  opt_statement_list block_end
+	  {
+		current_local_parameters = null;
+		var t = current_type as ClassOrStruct;
+		if (t != null) {
+			var b = (ToplevelBlock) $4;
+			if (t.PrimaryConstructorBlock != null) {
+				report.Error (8041, b.StartLocation, "Primary constructor already has a body");
+			} else {
+				t.PrimaryConstructorBlock = b;
+			}
+		}
+	  }
+	;
+
 struct_declaration
 	: opt_attributes
 	  opt_modifiers
@@ -1281,7 +1310,7 @@ method_declaration
 
 		// Was added earlier in the case of body being eof for full ast
 	  }
-	  method_body
+	  method_body_expression_block
 	  {
 		Method method = (Method) $1;
 		method.Block = (ToplevelBlock) $3;
@@ -1436,11 +1465,36 @@ method_header
 	  }
 	;
 
+method_body_expression_block
+	: method_body
+	| expression_block
+	;
+
 method_body
 	: block
 	| SEMICOLON		{ savedLocation = GetLocation ($1); $$ = null; }
 	;
 
+expression_block
+	: ARROW
+	 {
+		if (lang_version < LanguageVersion.V_6) {
+			FeatureIsNotAvailable (GetLocation ($1), "expression bodied members");
+		}
+
+		++lexer.parsing_block;
+		start_block (GetLocation ($1));
+	 }
+	 expression SEMICOLON
+	 {
+		lexer.parsing_block = 0;
+		current_block.AddStatement (new ContextualReturn ((Expression) $3));
+		var b = end_block (GetLocation ($4));
+		b.IsCompilerGenerated = true;
+		$$ = b;
+	 }
+	;
+
 opt_formal_parameter_list
 	: /* empty */			{ $$ = ParametersCompiled.EmptyReadOnlyParameters; }
 	| formal_parameter_list
@@ -1752,13 +1806,14 @@ arglist_modifier
 	  		report.Error (1669, GetLocation ($1), "__arglist is not valid in this context");
 	  }
 	;
-	
+
 property_declaration
 	: opt_attributes
 	  opt_modifiers
 	  member_type
 	  member_declaration_name
 	  {
+		lexer.parsing_generic_declaration = false;
 		if (doc_support)
 			tmpComment = Lexer.consume_doc_comment ();
 	  }
@@ -1786,10 +1841,67 @@ property_declaration
 	  CLOSE_BRACE
 	  {
 		lbag.AppendToMember (current_property, GetLocation ($10));
+		lexer.parsing_modifiers = true;
+	  }
+	  opt_property_initializer
+	  {
 		current_property = null;
 	  }
+	| opt_attributes
+	  opt_modifiers
+	  member_type
+	  member_declaration_name
+	  {
+		lexer.parsing_generic_declaration = false;
+		if (doc_support)
+			tmpComment = Lexer.consume_doc_comment ();
+		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
+	  }
+	  expression_block
+	  {
+		var type = (FullNamedExpression) $3;
+		var property = new Property (current_type, type, (Modifiers) $2,
+			(MemberName) $4, (Attributes) $1);
+
+		property.Get = new Property.GetMethod (property, Modifiers.COMPILER_GENERATED, null, property.Location);
+		property.Get.Block = (ToplevelBlock) $6;
+
+		if (current_container.Kind == MemberKind.Interface) {
+			report.Error (531, property.Get.Block.StartLocation,
+				"`{0}': interface members cannot have a definition", property.GetSignatureForError ());
+		}
+
+		if (type.Type != null && type.Type.Kind == MemberKind.Void)
+			report.Error (547, GetLocation ($3), "`{0}': property or indexer cannot have void type", property.GetSignatureForError ());
+
+		current_type.AddMember (property);
+
+		current_local_parameters = null;
+	  }
 	;
 
+opt_property_initializer
+	: /* empty */
+	| ASSIGN
+	  {
+		++lexer.parsing_block;
+		current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
+		start_block (GetLocation ($1));
+	  }
+	  property_initializer SEMICOLON
+	  {
+		--lexer.parsing_block;
+		((Property)current_property).Initializer = (Expression) $3;
+		lbag.AppendToMember (current_property, GetLocation ($1), GetLocation ($4));
+		end_block (GetLocation ($4));
+		current_local_parameters = null;
+	  }
+	;
+
+property_initializer
+	: expression
+	| array_initializer
+	;
 
 indexer_declaration
 	: opt_attributes opt_modifiers
@@ -1821,24 +1933,34 @@ indexer_declaration
 		}
 
 		lexer.PropertyParsing = true;
+		current_local_parameters = (ParametersCompiled) $7;
 	  }
-	  OPEN_BRACE accessor_declarations 
-	  {
-		lexer.PropertyParsing = false;
-	  }
-	  CLOSE_BRACE
+	  indexer_body
 	  {
+ 		lexer.PropertyParsing = false;
+		current_local_parameters = null;
+
 		if (current_property.AccessorFirst != null && current_property.AccessorFirst.Block == null)
 			((Indexer) current_property).ParameterInfo.CheckParameters (current_property);
 	  
 		if (doc_support)
 			current_property.DocComment = ConsumeStoredComment ();
 			
-		lbag.AppendToMember (current_property, GetLocation ($10), GetLocation ($13));
 		current_property = null;		
 	  }
 	;
 
+indexer_body
+	: OPEN_BRACE accessor_declarations CLOSE_BRACE
+	  {
+		lbag.AppendToMember (current_property, GetLocation ($1), GetLocation ($3));
+	  }
+	| expression_block
+	  {
+		current_property.Get = new Indexer.GetIndexerMethod (current_property, Modifiers.COMPILER_GENERATED, current_local_parameters, null, current_property.Location);
+		current_property.Get.Block = (ToplevelBlock) $1;
+	  }
+	;
 
 accessor_declarations
 	: get_accessor_declaration
@@ -2065,7 +2187,7 @@ operator_declaration
 	: opt_attributes opt_modifiers operator_declarator 
 	  {
 	  }
-	  operator_body
+	  method_body_expression_block
 	  {
 		OperatorDeclaration decl = (OperatorDeclaration) $3;
 		if (decl != null) {
@@ -2095,11 +2217,6 @@ operator_declaration
 	  }
 	;
 
-operator_body 
-	: block
-	| SEMICOLON { savedLocation = GetLocation ($1); $$ = null; }
-	; 
-
 operator_type
 	: type_expression_or_array
 	| VOID
@@ -2851,6 +2968,15 @@ namespace_or_type_expr
 		$$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $3, lt1.Location);
 		lbag.AddLocation ($$, savedLocation, GetLocation ($2));
 	  }
+	| qualified_alias_member IDENTIFIER generic_dimension
+	  {
+		var lt1 = (LocatedToken) $1;
+		var lt2 = (LocatedToken) $2;
+		var qam = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) $3, lt1.Location);
+		lbag.AddLocation (qam.TypeArguments, Lexer.GenericDimensionLocations);
+		$$ = qam;
+		lbag.AddLocation ($$, GetLocation ($2));
+	  }
 	;
 
 member_name
@@ -2861,6 +2987,14 @@ member_name
 		$$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
 		lbag.AddLocation ($$, GetLocation ($2));
 	  }
+	| namespace_or_type_expr DOT IDENTIFIER generic_dimension
+	  {
+		var lt = (LocatedToken) $3;
+		var ma = new MemberAccess ((Expression) $1, lt.Value, (int) $4, lt.Location);
+		lbag.AddLocation (ma.TypeArguments, Lexer.GenericDimensionLocations);
+		$$ = ma;
+		lbag.AddLocation ($$, GetLocation ($2));
+	  }
 	;
 
 simple_name_expr
@@ -2869,8 +3003,15 @@ simple_name_expr
 		var lt = (LocatedToken) $1;
 		$$ = new SimpleName (lt.Value, (TypeArguments)$2, lt.Location);
 	  }
+	| IDENTIFIER generic_dimension
+	  {  
+		var lt = (LocatedToken) $1;
+		var sn = new SimpleName (lt.Value, (int) $2, lt.Location);
+		lbag.AddLocation (sn.TypeArguments, Lexer.GenericDimensionLocations);
+		$$ = sn;
+	  }
 	;
-	
+
 //
 // Generics arguments  (any type, without attributes)
 //
@@ -3058,29 +3199,21 @@ member_type
 //
 type
 	: type_expression_or_array
-	| VOID
-	  {
-	  	Expression.Error_VoidInvalidInTheContext (GetLocation ($1), report);
-		$$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
-	  }	
+	| void_invalid
 	;
 	
 simple_type
 	: type_expression
-	| VOID
-	  {
-	  	Expression.Error_VoidInvalidInTheContext (GetLocation ($1), report);
-		$$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
-	  }	
+	| void_invalid
 	;
 	
 parameter_type
 	: type_expression_or_array
 	| VOID
 	  {
-	  	report.Error (1536, GetLocation ($1), "Invalid parameter type `void'");
+		report.Error (1536, GetLocation ($1), "Invalid parameter type `void'");
 		$$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
-	  }	
+	  }
 	;
 
 type_expression_or_array
@@ -3108,7 +3241,19 @@ type_expression
 	  {
 		$$ = new ComposedCast ((ATypeNameExpression) $1, (ComposedTypeSpecifier) $2);
 	  }
-	| builtin_types opt_nullable
+	| builtin_type_expression
+	;
+
+void_invalid
+	: VOID
+	  {
+		Expression.Error_VoidInvalidInTheContext (GetLocation ($1), report);
+		$$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
+	  }
+	;
+
+builtin_type_expression
+	: builtin_types opt_nullable
 	  {
 		if ($2 != null)
 			$$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
@@ -3204,11 +3349,7 @@ primary_expression
 	;
 
 primary_expression_or_type
-	: IDENTIFIER opt_type_argument_list
-	  {
-		var lt = (LocatedToken) $1;
-		$$ = new SimpleName (lt.Value, (TypeArguments)$2, lt.Location);	  
-	  }
+	: simple_name_expr
 	| IDENTIFIER GENERATE_COMPLETION {
 		var lt = (LocatedToken) $1;
 	       $$ = new CompletionSimpleName (MemberName.MakeName (lt.Value, null), lt.Location);
@@ -3259,7 +3400,7 @@ parenthesized_expression
 		$$ = new ParenthesizedExpression ((Expression) $2, GetLocation ($1));
 	  }
 	;
-	
+
 member_access
 	: primary_expression DOT identifier_inside_body opt_type_argument_list
 	  {
@@ -3267,6 +3408,23 @@ member_access
 		$$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
 		lbag.AddLocation ($$, GetLocation ($2));
 	  }
+	| primary_expression DOT identifier_inside_body generic_dimension
+	  {
+		var lt = (LocatedToken) $3;
+		var ma = new MemberAccess ((Expression) $1, lt.Value, (int) $4, lt.Location);
+		lbag.AddLocation (ma.TypeArguments, Lexer.GenericDimensionLocations);
+		$$ = ma;
+		lbag.AddLocation ($$, GetLocation ($2));
+	  }
+	| primary_expression INTERR_OPERATOR DOT identifier_inside_body opt_type_argument_list
+	  {
+		if (lang_version < LanguageVersion.V_6)
+			FeatureIsNotAvailable (GetLocation ($2), "null propagating operator");
+
+		var lt = (LocatedToken) $4;
+		$$ = new ConditionalMemberAccess ((Expression) $1, lt.Value, (TypeArguments) $5, lt.Location);
+		lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3));
+	  }
 	| builtin_types DOT identifier_inside_body opt_type_argument_list
 	  {
 		var lt = (LocatedToken) $3;
@@ -3293,6 +3451,15 @@ member_access
 		$$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $3, lt1.Location);
 		lbag.AddLocation ($$, savedLocation, GetLocation ($2));
 	  }
+	| qualified_alias_member identifier_inside_body generic_dimension
+	  {
+		var lt1 = (LocatedToken) $1;
+		var lt2 = (LocatedToken) $2;
+		var qam = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) $3, lt1.Location);
+		lbag.AddLocation (qam.TypeArguments, Lexer.GenericDimensionLocations);
+		$$ = qam;
+		lbag.AddLocation ($$, GetLocation ($2));
+	  }
 	| primary_expression DOT GENERATE_COMPLETION {
 		$$ = new CompletionMemberAccess ((Expression) $1, null,GetLocation ($3));
 	  }
@@ -3414,6 +3581,15 @@ member_initializer
 	  		$$ = new CollectionElementInitializer ((List<Expression>)$2, GetLocation ($1));
 			lbag.AddLocation ($$, GetLocation ($2));
 		}
+		lbag.AddLocation ($$, GetLocation ($3));
+	  }
+	| OPEN_BRACKET_EXPR expression_list CLOSE_BRACKET ASSIGN initializer_value
+	  {
+		if (lang_version < LanguageVersion.V_6)
+			FeatureIsNotAvailable (GetLocation ($1), "dictionary initializer");
+
+		$$ = new DictionaryElementInitializer ((List<Expression>)$2, (Expression) $5, GetLocation ($1));
+		lbag.AddLocation ($$, GetLocation ($3), GetLocation ($4));
 	  }
 	| OPEN_BRACE CLOSE_BRACE
 	  {
@@ -3525,6 +3701,17 @@ element_access
 		$$ = new ElementAccess ((Expression) $1, (Arguments) $3, GetLocation ($2));
 		lbag.AddLocation ($$, GetLocation ($4));
 	  }
+	| primary_expression INTERR_OPERATOR OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET	
+	  {
+		if (lang_version < LanguageVersion.V_6)
+			FeatureIsNotAvailable (GetLocation ($2), "null propagating operator");
+
+		$$ = new ElementAccess ((Expression) $1, (Arguments) $4, GetLocation ($3)) {
+			ConditionalAccess = true
+		};
+
+		lbag.AddLocation ($$, GetLocation ($2), GetLocation ($5));
+	  }
 	| primary_expression OPEN_BRACKET_EXPR expression_list_arguments error
 	  {
 		Error_SyntaxError (yyToken);
@@ -3851,75 +4038,21 @@ variable_initializer_list
 	;
 
 typeof_expression
-	: TYPEOF
-      {
-	  	lexer.TypeOfParsing = true;
-	  }
-	  open_parens_any typeof_type_expression CLOSE_PARENS
+	: TYPEOF open_parens_any typeof_type_expression CLOSE_PARENS
 	  {
-	  	lexer.TypeOfParsing = false;
-		$$ = new TypeOf ((FullNamedExpression) $4, GetLocation ($1));
-		lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
+		$$ = new TypeOf ((FullNamedExpression) $3, GetLocation ($1));
+		lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
 	  }
 	;
 	
 typeof_type_expression
 	: type_and_void
-	| unbound_type_name
 	| error
 	 {
 	 	Error_TypeExpected (lexer.Location);
 	 	$$ = null;
 	 }
 	;
-	
-unbound_type_name
-	: identifier_inside_body generic_dimension
-	  {  
-		var lt = (LocatedToken) $1;
-
-		var sn = new SimpleName (lt.Value, (int) $2, lt.Location);
-		$$ = sn;
-		lbag.AddLocation (sn.TypeArguments, Lexer.GetGenericDimensionLocations ());
-	  }
-	| qualified_alias_member identifier_inside_body generic_dimension
-	  {
-		var lt1 = (LocatedToken) $1;
-		var lt2 = (LocatedToken) $2;
-
-		var qam = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) $3, lt1.Location);
-		$$ = qam;
-		lbag.AddLocation (qam.TypeArguments, Lexer.GetGenericDimensionLocations ());
-		lbag.AddLocation ($$, savedLocation, GetLocation ($2));
-	  }
-	| unbound_type_name DOT identifier_inside_body
-	  {
-		var lt = (LocatedToken) $3;
-		
-		$$ = new MemberAccess ((Expression) $1, lt.Value, lt.Location);
-		lbag.AddLocation ($$, savedLocation, GetLocation ($2));
-	  }
-	| unbound_type_name DOT identifier_inside_body generic_dimension
-	  {
-		var lt = (LocatedToken) $3;
-		
-		var ma = new MemberAccess ((Expression) $1, lt.Value, (int) $4, lt.Location);
-		$$ = ma;
-		lbag.AddLocation ($$, savedLocation, GetLocation ($2));
-		lbag.AddLocation (ma.TypeArguments, Lexer.GetGenericDimensionLocations ());
-	  }
-	| namespace_or_type_expr DOT identifier_inside_body generic_dimension
-	  {
-		var tne = (ATypeNameExpression) $1;
-		if (tne.HasTypeArguments)
-			Error_TypeExpected (GetLocation ($4));
-
-		var lt = (LocatedToken) $3;
-		var ma = new MemberAccess (tne, lt.Value, (int) $4, lt.Location);		
-		$$ = ma;
-		lbag.AddLocation (ma.TypeArguments, Lexer.GetGenericDimensionLocations ());
-	  }
-	;
 
 generic_dimension
 	: GENERIC_DIMENSION
@@ -4240,15 +4373,7 @@ additive_expression
 		$$ = new Binary (Binary.Operator.Subtraction, (Expression) $1, (Expression) $3);
 		lbag.AddLocation ($$, GetLocation ($2));
 	  }
-	| additive_expression AS type
-	  {
-		$$ = new As ((Expression) $1, (Expression) $3, GetLocation ($2));
-	  }
-	| additive_expression IS type
-	  {
-		$$ = new Is ((Expression) $1, (Expression) $3, GetLocation ($2));
-	  }	  
-	| additive_expression PLUS error 
+	| additive_expression PLUS error
 	  {
 		Error_SyntaxError (yyToken);
 
@@ -4262,6 +4387,24 @@ additive_expression
 		$$ = new Binary (Binary.Operator.Subtraction, (Expression) $1, null);
 		lbag.AddLocation ($$, GetLocation ($2));
 	  }
+	| additive_expression AS type
+	  {
+		$$ = new As ((Expression) $1, (Expression) $3, GetLocation ($2));
+	  }
+	| additive_expression IS is_match_expr opt_identifier
+	  {
+		var is_expr = new Is ((Expression) $1, (Expression) $3, GetLocation ($2));
+		if ($4 != null) {
+			if (lang_version != LanguageVersion.Experimental)
+				FeatureIsNotAvailable (GetLocation ($4), "type pattern matching");
+
+			var lt = (LocatedToken) $4;
+			is_expr.Variable = new LocalVariable (current_block, lt.Value, lt.Location);
+			current_block.AddLocalName (is_expr.Variable);
+		}
+
+		$$ = is_expr;
+	  }
 	| additive_expression AS error
 	  {
 		Error_SyntaxError (yyToken);
@@ -4286,6 +4429,58 @@ additive_expression
 	  }
 	;
 
+is_match_expr
+	: match_type
+	| match_type rank_specifiers
+	  {
+		if ($1 is VarExpr)
+			$1 = new SimpleName ("var", ((VarExpr) $1).Location);
+
+		$$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
+	  }
+	| literal
+	| PLUS prefixed_unary_expression
+	  {
+		$$ = new Unary (Unary.Operator.UnaryPlus, (Expression) $2, GetLocation ($1));
+	  }
+	| MINUS prefixed_unary_expression
+	  {
+		$$ = new Unary (Unary.Operator.UnaryNegation, (Expression) $2, GetLocation ($1));
+	  }
+	;
+
+match_type
+	: primary_expression_or_type opt_nullable
+	  {
+		Expression expr = (Expression) $1;
+		if ($2 == null) {
+			SimpleName sn = expr as SimpleName;
+			if (sn != null && sn.Name == "var")
+				$$ = new VarExpr (sn.Location);
+			else
+				$$ = $1;
+		} else if (expr is ATypeNameExpression) {
+			$$ = new ComposedCast ((ATypeNameExpression)expr, (ComposedTypeSpecifier) $2);
+		} else {
+			Error_ExpectingTypeName (expr);
+			$$ = null;
+		}
+	  }
+	| primary_expression_or_type pointer_stars
+	  {
+		ATypeNameExpression expr = $1 as ATypeNameExpression;
+
+		if (expr != null) {
+			$$ = new ComposedCast (expr, (ComposedTypeSpecifier) $2);
+		} else {
+			Error_ExpectingTypeName ((Expression)$1);
+			$$ = expr;
+		}
+	  }
+	| builtin_type_expression
+	| void_invalid
+	;
+
 shift_expression
 	: additive_expression
 	| shift_expression OP_SHIFT_LEFT additive_expression
@@ -4787,6 +4982,9 @@ primary_parameters
 
 		// Cannot use opt_formal_parameter_list because it can be shared instance for empty parameters
 	  	lbag.AppendToMember (current_container, GetLocation ($1), GetLocation ($3));
+
+		if (lang_version < LanguageVersion.V_6)
+			FeatureIsNotAvailable (GetLocation ($1), "primary constructor");
 	  }
 	;
 
@@ -4803,14 +5001,19 @@ opt_primary_parameters_with_class_base
 	  {
 		$$ = $1;
 	  }
+	| primary_parameters class_base
+	  {
+		$$ = $1;
+	  }
 	| primary_parameters class_base OPEN_PARENS
 	  {
 		++lexer.parsing_block;
+		current_type.PrimaryConstructorBaseArgumentsStart = GetLocation ($3);
 	  }
 	  opt_argument_list CLOSE_PARENS
 	  {
-		lbag.AppendToMember (current_container, GetLocation ($3), GetLocation ($6));
-		((Class)current_type).PrimaryConstructorBaseArguments = (Arguments) $5;
+		lbag.AppendToMember (current_container, GetLocation ($6));
+		current_type.PrimaryConstructorBaseArguments = (Arguments) $5;
 		--lexer.parsing_block;
 
 		$$ = $1;
@@ -5410,26 +5613,8 @@ variable_type_simple
 			$$ = expr;
 		}
 	  }
-	| builtin_types opt_nullable
-	  {
-		if ($2 == null)
-			$$ = $1;
-		else
-			$$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
-	  }
-	| builtin_types pointer_stars
-	  {
-		$$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
-	  }
-	| VOID pointer_stars
-	  {
-		$$ = new ComposedCast (new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1)), (ComposedTypeSpecifier) $2);
-	  }	  
-	| VOID
-	  {
-		Expression.Error_VoidInvalidInTheContext (GetLocation ($1), report);
-		$$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
-	  }
+	| builtin_type_expression
+	| void_invalid
 	;
 	
 pointer_stars
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-tokenizer.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-tokenizer.cs
index 44a83ce8..a423eb50 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-tokenizer.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-tokenizer.cs
@@ -202,7 +202,6 @@ namespace Mono.CSharp
 		bool handle_get_set = false;
 		bool handle_remove_add = false;
 		bool handle_where;
-		bool handle_typeof = false;
 		bool lambda_arguments_parsing;
 		List<Location> escaped_identifiers;
 		int parsing_generic_less_than;
@@ -321,11 +320,6 @@ namespace Mono.CSharp
 			get { return handle_where; }
 			set { handle_where = value; }
 		}
-
-		public bool TypeOfParsing {
-			get { return handle_typeof; }
-			set { handle_typeof = value; }
-		}
 	
 		public XmlCommentState doc_state {
 			get { return xml_doc_state; }
@@ -743,6 +737,7 @@ namespace Mono.CSharp
 					case Token.BYTE:
 					case Token.CHAR:
 					case Token.DECIMAL:
+					case Token.DOUBLE:
 					case Token.FLOAT:
 					case Token.LONG:
 					case Token.OBJECT:
@@ -1157,9 +1152,21 @@ namespace Mono.CSharp
 			return true;
 		}
 
-		bool parse_less_than ()
+		Stack<List<Location>> genericDimensionLocations = new Stack<List<Location>> ();
+
+		public List<Location> GenericDimensionLocations {
+			get {
+				if (genericDimensionLocations.Count == 0)
+					return null;
+				return genericDimensionLocations.Pop ();
+			}
+		}
+
+		bool parse_less_than (ref int genericDimension)
 		{
-		start:
+			genericDimensionLocations.Push (new List<Location> ()); 
+			genericDimensionLocations.Peek ().Add (Location);
+			start:
 			int the_token = token ();
 			if (the_token == Token.OPEN_BRACKET) {
 				while (true) {
@@ -1194,65 +1201,66 @@ namespace Mono.CSharp
 			case Token.VOID:
 				break;
 			case Token.OP_GENERICS_GT:
+				genericDimension = 1;
+				genericDimensionLocations.Peek ().Add (Location);
+				return true;
 			case Token.IN:
 			case Token.OUT:
+				genericDimensionLocations.Pop ();
 				return true;
+			case Token.COMMA:
+				do {
+					++genericDimension;
+					if (genericDimensionLocations.Count > 0)
+						genericDimensionLocations.Peek ().Add (Location);
+					the_token = token ();
+				} while (the_token == Token.COMMA);
 
+				if (the_token == Token.OP_GENERICS_GT) {
+					++genericDimension;
+					if (genericDimensionLocations.Count > 0)
+						genericDimensionLocations.Peek ().Add (Location);
+					return true;
+				}
+
+				genericDimensionLocations.Pop ();
+				return false;
 			default:
+				genericDimensionLocations.Pop ();
 				return false;
 			}
-		again:
+			again:
 			the_token = token ();
-
-			if (the_token == Token.OP_GENERICS_GT)
+			if (the_token == Token.OP_GENERICS_GT) {
+				genericDimensionLocations.Peek ().Add (Location);
 				return true;
+			}
 			else if (the_token == Token.COMMA || the_token == Token.DOT || the_token == Token.DOUBLE_COLON)
 				goto start;
 			else if (the_token == Token.INTERR_NULLABLE || the_token == Token.STAR)
 				goto again;
 			else if (the_token == Token.OP_GENERICS_LT) {
-				if (!parse_less_than ())
+				if (!parse_less_than (ref genericDimension)) {
+					genericDimensionLocations.Pop ();
 					return false;
+				}
 				goto again;
 			} else if (the_token == Token.OPEN_BRACKET) {
-			rank_specifiers:
+				rank_specifiers:
 				the_token = token ();
 				if (the_token == Token.CLOSE_BRACKET)
 					goto again;
 				else if (the_token == Token.COMMA)
 					goto rank_specifiers;
+				genericDimensionLocations.Pop ();
 				return false;
 			}
 
+			genericDimensionLocations.Pop ();
 			return false;
 		}
 
-		List<Location> genericLocs = new List<Location> ();
-
-		public List<Location> GetGenericDimensionLocations ()
-		{
-			return genericLocs;
-		}
 
-		bool parse_generic_dimension (out int dimension)
-		{
-			dimension = 1;
-
-		again:
-			int the_token = token ();
-			if (the_token == Token.OP_GENERICS_GT) {
-				genericLocs.Add (Location);
-				return true;
-			}
-			else if (the_token == Token.COMMA) {
-				dimension++;
-				genericLocs.Add (Location);
-				goto again;
-			}
-
-			return false;
-		}
-		
 		public int peek_token ()
 		{
 			int the_token;
@@ -1285,13 +1293,8 @@ namespace Mono.CSharp
 				return Token.OP_COALESCING;
 			}
 
-			switch (current_token) {
-			case Token.CLOSE_PARENS:
-			case Token.TRUE:
-			case Token.FALSE:
-			case Token.NULL:
-			case Token.LITERAL:
-				return Token.INTERR;
+			if (d == '.') {
+				return Token.INTERR_OPERATOR;
 			}
 
 			if (d != ' ') {
@@ -1304,7 +1307,15 @@ namespace Mono.CSharp
 			PushPosition ();
 			current_token = Token.NONE;
 			int next_token;
-			switch (xtoken ()) {
+			int parens = 0;
+			int generics = 0;
+
+			var nt = xtoken ();
+			switch (nt) {
+			case Token.DOT:
+			case Token.OPEN_BRACKET_EXPR:
+				next_token = Token.INTERR_OPERATOR;
+				break;
 			case Token.LITERAL:
 			case Token.TRUE:
 			case Token.FALSE:
@@ -1324,7 +1335,21 @@ namespace Mono.CSharp
 			case Token.COLON:
 				next_token = Token.INTERR_NULLABLE;
 				break;
-				
+
+			case Token.OPEN_PARENS:
+			case Token.OPEN_PARENS_CAST:
+			case Token.OPEN_PARENS_LAMBDA:
+				next_token = -1;
+				++parens;
+				break;
+
+			case Token.OP_GENERICS_LT:
+			case Token.OP_GENERICS_LT_DECL:
+			case Token.GENERIC_DIMENSION:
+				next_token = -1;
+				++generics;
+				break;
+
 			default:
 				next_token = -1;
 				break;
@@ -1335,21 +1360,36 @@ namespace Mono.CSharp
 				case Token.COMMA:
 				case Token.SEMICOLON:
 				case Token.OPEN_BRACE:
-				case Token.CLOSE_PARENS:
 				case Token.IN:
 					next_token = Token.INTERR_NULLABLE;
 					break;
 					
 				case Token.COLON:
 					next_token = Token.INTERR;
-					break;							
-					
+					break;
+
+				case Token.OPEN_PARENS:
+				case Token.OPEN_PARENS_CAST:
+				case Token.OPEN_PARENS_LAMBDA:
+					++parens;
+					goto default;
+
+				case Token.CLOSE_PARENS:
+					--parens;
+					goto default;
+
+				case Token.OP_GENERICS_LT:
+				case Token.OP_GENERICS_LT_DECL:
+				case Token.GENERIC_DIMENSION:
+					++generics;
+					goto default;
+
 				default:
 					int ntoken;
 					int interrs = 1;
 					int colons = 0;
 					int braces = 0;
-					int parens = 0;
+					int brackets = 0;
 					//
 					// All shorcuts failed, do it hard way
 					//
@@ -1366,10 +1406,35 @@ namespace Mono.CSharp
 						case Token.CLOSE_BRACE:
 							--braces;
 							continue;
+						case Token.OP_GENERICS_LT:
+						case Token.OP_GENERICS_LT_DECL:
+						case Token.GENERIC_DIMENSION:
+							++generics;
+							continue;
+						case Token.OPEN_BRACKET:
+						case Token.OPEN_BRACKET_EXPR:
+							++brackets;
+							continue;
+						case Token.CLOSE_BRACKET:
+							--brackets;
+							continue;
 						case Token.CLOSE_PARENS:
-							if (parens > 0)
+							if (parens > 0) {
 								--parens;
-							continue;
+								continue;
+							}
+
+							PopPosition ();
+							return Token.INTERR_NULLABLE;
+
+						case Token.OP_GENERICS_GT:
+							if (generics > 0) {
+								--generics;
+								continue;
+							}
+
+							PopPosition ();
+							return Token.INTERR_NULLABLE;
 						}
 
 						if (braces != 0)
@@ -1380,6 +1445,14 @@ namespace Mono.CSharp
 
 						if (parens != 0)
 							continue;
+
+						if (ntoken == Token.COMMA) {
+							if (generics != 0 || brackets != 0)
+								continue;
+
+							PopPosition ();
+							return Token.INTERR_NULLABLE;
+						}
 						
 						if (ntoken == Token.COLON) {
 							if (++colons == interrs)
@@ -3104,6 +3177,7 @@ namespace Mono.CSharp
 
 				value_builder[pos++] = (char) c;
 			}
+			recordNewLine = true;
 		}
 
 		private int consume_identifier (int s)
@@ -3674,7 +3748,8 @@ namespace Mono.CSharp
 //								Eror_WrongPreprocessorLocation ();
 //								return Token.ERROR;
 //							}
-							sbag.PushCommentChar (c);
+							if (c != '#')
+								sbag.PushCommentChar (c);
 							continue;
 						}
 
@@ -3807,24 +3882,20 @@ namespace Mono.CSharp
 		int TokenizeLessThan ()
 		{
 			int d;
-			if (handle_typeof) {
-				genericLocs.Clear ();
-				genericLocs.Add (Location);
-				PushPosition ();
-				if (parse_generic_dimension (out d)) {
-					val = d;
-					DiscardPosition ();
-					return Token.GENERIC_DIMENSION;
-				}
-				PopPosition ();
-			}
 
 			// Save current position and parse next token.
 			PushPosition ();
-			if (parse_less_than ()) {
+			int generic_dimension = 0;
+			if (parse_less_than (ref generic_dimension)) {
 				if (parsing_generic_declaration && (parsing_generic_declaration_doc || token () != Token.DOT)) {
 					d = Token.OP_GENERICS_LT_DECL;
 				} else {
+					if (generic_dimension > 0) {
+						val = generic_dimension;
+						DiscardPosition ();
+						return Token.GENERIC_DIMENSION;
+					}
+
 					d = Token.OP_GENERICS_LT;
 				}
 				PopPosition ();
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/delegate.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/delegate.cs
index 907e6df0..612d1163 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/delegate.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/delegate.cs
@@ -439,6 +439,7 @@ namespace Mono.CSharp {
 	//
 	public abstract class DelegateCreation : Expression, OverloadResolver.IErrorHandler
 	{
+		bool conditional_access_receiver;
 		protected MethodSpec constructor_method;
 		protected MethodGroupExpr method_group;
 
@@ -507,8 +508,19 @@ namespace Mono.CSharp {
 
 			var invoke_method = Delegate.GetInvokeMethod (type);
 
+			if (!ec.HasSet (ResolveContext.Options.ConditionalAccessReceiver)) {
+				if (method_group.HasConditionalAccess ()) {
+					conditional_access_receiver = true;
+					ec.Set (ResolveContext.Options.ConditionalAccessReceiver);
+				}
+			}
+
 			Arguments arguments = CreateDelegateMethodArguments (ec, invoke_method.Parameters, invoke_method.Parameters.Types, loc);
 			method_group = method_group.OverloadResolve (ec, ref arguments, this, OverloadResolver.Restrictions.CovariantDelegate);
+
+			if (conditional_access_receiver)
+				ec.With (ResolveContext.Options.ConditionalAccessReceiver, false);
+
 			if (method_group == null)
 				return null;
 
@@ -564,10 +576,15 @@ namespace Mono.CSharp {
 		
 		public override void Emit (EmitContext ec)
 		{
-			if (method_group.InstanceExpression == null)
+			if (conditional_access_receiver)
+				ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ());
+
+			if (method_group.InstanceExpression == null) {
 				ec.EmitNull ();
-			else
-				method_group.InstanceExpression.Emit (ec);
+			} else {
+				var ie = new InstanceEmitter (method_group.InstanceExpression, false);
+				ie.Emit (ec, method_group.ConditionalAccess);
+			}
 
 			var delegate_method = method_group.BestCandidate;
 
@@ -580,11 +597,18 @@ namespace Mono.CSharp {
 			}
 
 			ec.Emit (OpCodes.Newobj, constructor_method);
+
+			if (conditional_access_receiver)
+				ec.CloseConditionalAccess (null);
 		}
 
-		public override void FlowAnalysis (FlowAnalysisContext fc) {
+		public override void FlowAnalysis (FlowAnalysisContext fc)
+		{
 			base.FlowAnalysis (fc);
 			method_group.FlowAnalysis (fc);
+
+			if (conditional_access_receiver)
+				fc.ConditionalAccessEnd ();
 		}
 
 		void Error_ConversionFailed (ResolveContext ec, MethodSpec method, Expression return_type)
@@ -830,13 +854,15 @@ namespace Mono.CSharp {
 	class DelegateInvocation : ExpressionStatement
 	{
 		readonly Expression InstanceExpr;
+		readonly bool conditionalAccessReceiver;
 		Arguments arguments;
 		MethodSpec method;
 		
-		public DelegateInvocation (Expression instance_expr, Arguments args, Location loc)
+		public DelegateInvocation (Expression instance_expr, Arguments args, bool conditionalAccessReceiver, Location loc)
 		{
 			this.InstanceExpr = instance_expr;
 			this.arguments = args;
+			this.conditionalAccessReceiver = conditionalAccessReceiver;
 			this.loc = loc;
 		}
 
@@ -877,29 +903,45 @@ namespace Mono.CSharp {
 				return null;
 
 			type = method.ReturnType;
+			if (conditionalAccessReceiver)
+				type = LiftMemberType (ec, type);
+
 			eclass = ExprClass.Value;
 			return this;
 		}
 
 		public override void Emit (EmitContext ec)
 		{
+			if (conditionalAccessReceiver) {
+				ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ());
+			}
+
 			//
 			// Invocation on delegates call the virtual Invoke member
 			// so we are always `instance' calls
 			//
 			var call = new CallEmitter ();
 			call.InstanceExpression = InstanceExpr;
-			call.EmitPredefined (ec, method, arguments, loc);
+			call.Emit (ec, method, arguments, loc);
+
+			if (conditionalAccessReceiver)
+				ec.CloseConditionalAccess (type.IsNullableType && type !=  method.ReturnType ? type : null);
 		}
 
 		public override void EmitStatement (EmitContext ec)
 		{
-			Emit (ec);
-			// 
-			// Pop the return value if there is one
-			//
-			if (type.Kind != MemberKind.Void)
-				ec.Emit (OpCodes.Pop);
+			if (conditionalAccessReceiver) {
+				ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ()) {
+					Statement = true
+				};
+			}
+
+			var call = new CallEmitter ();
+			call.InstanceExpression = InstanceExpr;
+			call.EmitStatement (ec, method, arguments, loc);
+
+			if (conditionalAccessReceiver)
+				ec.CloseConditionalAccess (null);
 		}
 
 		public override System.Linq.Expressions.Expression MakeExpression (BuilderContext ctx)
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/dynamic.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/dynamic.cs
index 939984e5..5604a3fc 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/dynamic.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/dynamic.cs
@@ -48,7 +48,7 @@ namespace Mono.CSharp
 			this.loc = loc;
 		}
 
-		public override TypeSpec ResolveAsType (IMemberContext ec)
+		public override TypeSpec ResolveAsType (IMemberContext ec, bool allowUnboundTypeArguments)
 		{
 			eclass = ExprClass.Type;
 			type = ec.Module.Compiler.BuiltinTypes.Dynamic;
@@ -534,7 +534,7 @@ namespace Mono.CSharp
 					}
 				}
 
-				Expression target = new DelegateInvocation (new MemberAccess (site_field_expr, "Target", loc).Resolve (bc), args, loc).Resolve (bc);
+				Expression target = new DelegateInvocation (new MemberAccess (site_field_expr, "Target", loc).Resolve (bc), args, false, loc).Resolve (bc);
 				if (target != null)
 					target.Emit (ec);
 			}
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/ecore.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/ecore.cs
index 593ab6bc..d1e2c3b8 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/ecore.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/ecore.cs
@@ -228,7 +228,7 @@ namespace Mono.CSharp {
 		// This is used if the expression should be resolved as a type or namespace name.
 		// the default implementation fails.   
 		//
-		public virtual TypeSpec ResolveAsType (IMemberContext mc)
+		public virtual TypeSpec ResolveAsType (IMemberContext mc, bool allowUnboundTypeArguments = false)
 		{
 			ResolveContext ec = new ResolveContext (mc);
 			Expression e = Resolve (ec);
@@ -429,6 +429,50 @@ namespace Mono.CSharp {
 		{
 			return type.GetDefinition ().GetSignatureForError ();
 		}
+
+		public static bool IsNeverNull (Expression expr)
+		{
+			if (expr is This || expr is New || expr is ArrayCreation || expr is DelegateCreation || expr is ConditionalMemberAccess)
+				return true;
+
+			var c = expr as Constant;
+			if (c != null)
+				return !c.IsNull;
+
+			var tc = expr as TypeCast;
+			if (tc != null)
+				return IsNeverNull (tc.Child);
+
+			return false;
+		}
+
+		protected static bool IsNullPropagatingValid (TypeSpec type)
+		{
+			switch (type.Kind) {
+			case MemberKind.Struct:
+				return type.IsNullableType;
+			case MemberKind.Enum:
+			case MemberKind.Void:
+			case MemberKind.PointerType:
+				return false;
+			case MemberKind.InternalCompilerType:
+				return type.BuiltinType == BuiltinTypeSpec.Type.Dynamic;
+			default:
+				return true;
+			}
+		}
+
+		public virtual bool HasConditionalAccess ()
+		{
+			return false;
+		}
+
+		protected static TypeSpec LiftMemberType (ResolveContext rc, TypeSpec type)
+		{
+			return TypeSpec.IsValueType (type) && !type.IsNullableType ?
+				Nullable.NullableInfo.MakeType (rc.Module, type) :
+				type;
+		}
 	       
 		/// <summary>
 		///   Resolves an expression and performs semantic analysis on it.
@@ -726,6 +770,9 @@ namespace Mono.CSharp {
 					break;
 				case MemberKind.MissingType:
 				case MemberKind.InternalCompilerType:
+// LAMESPEC: dynamic is not really object
+//					if (type.BuiltinType == BuiltinTypeSpec.Type.Object)
+//						goto default;
 					break;
 				default:
 					rc.Report.SymbolRelatedToPreviousError (type);
@@ -751,7 +798,10 @@ namespace Mono.CSharp {
 			None = 0,
 			InvocableOnly = 1,
 			ExactArity = 1 << 2,
-			ReadAccess = 1 << 3
+			ReadAccess = 1 << 3,
+			EmptyArguments = 1 << 4,
+			IgnoreArity = 1 << 5,
+			IgnoreAmbiguity = 1 << 6
 		}
 
 		//
@@ -845,7 +895,7 @@ namespace Mono.CSharp {
 				}
 
 				if (non_method != null) {
-					if (ambig_non_method != null && rc != null) {
+					if (ambig_non_method != null && rc != null && (restrictions & MemberLookupRestrictions.IgnoreAmbiguity) == 0) {
 						var report = rc.Module.Compiler.Report;
 						report.SymbolRelatedToPreviousError (non_method);
 						report.SymbolRelatedToPreviousError (ambig_non_method);
@@ -936,10 +986,25 @@ namespace Mono.CSharp {
 			ec.Report.Error (1944, loc, "An expression tree cannot contain an unsafe pointer operation");
 		}
 
+		protected void Error_NullShortCircuitInsideExpressionTree (ResolveContext rc)
+		{
+			rc.Report.Error (8072, loc, "An expression tree cannot contain a null propagating operator");
+		}
+
 		public virtual void FlowAnalysis (FlowAnalysisContext fc)
 		{
 		}
 
+		//
+		// Special version of flow analysis for expressions which can return different
+		// on-true and on-false result. Used by &&, ||, ?: expressions
+		//
+		public virtual void FlowAnalysisConditional (FlowAnalysisContext fc)
+		{
+			FlowAnalysis (fc);
+			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
+		}
+
 		/// <summary>
 		///   Returns an expression that can be used to invoke operator true
 		///   on the expression if it exists.
@@ -2476,6 +2541,11 @@ namespace Mono.CSharp {
 				(targs == null || targs.Equals (atne.targs));
 		}
 
+		protected void Error_OpenGenericTypeIsNotAllowed (IMemberContext mc)
+		{
+			mc.Module.Compiler.Report.Error (7003, Location, "Unbound generic name is not valid in this context");
+		}
+
 		public override int GetHashCode ()
 		{
 			return Name.GetHashCode ();
@@ -2548,6 +2618,11 @@ namespace Mono.CSharp {
 			return SimpleNameResolve (ec, right_side);
 		}
 
+		public void Error_NameDoesNotExist (ResolveContext rc)
+		{
+			rc.Report.Error (103, loc, "The name `{0}' does not exist in the current context", Name);
+		}
+
 		protected virtual void Error_TypeOrNamespaceNotFound (IMemberContext ctx)
 		{
 			if (ctx.CurrentType != null) {
@@ -2592,7 +2667,7 @@ namespace Mono.CSharp {
 			}
 		}
 
-		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc)
+		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc, bool allowUnboundTypeArguments)
 		{
 			FullNamedExpression fne = mc.LookupNamespaceOrType (Name, Arity, LookupMode.Normal, loc);
 
@@ -2606,6 +2681,9 @@ namespace Mono.CSharp {
 						return ct;
 					}
 
+					if (!allowUnboundTypeArguments)
+						Error_OpenGenericTypeIsNotAllowed (mc);
+
 					return new GenericOpenTypeExpr (fne.Type, loc);
 				}
 
@@ -2756,10 +2834,22 @@ namespace Mono.CSharp {
 							rc.Report.Error (135, loc, "`{0}' conflicts with a declaration in a child block", Name);
 						}
 
-						return ResolveAsTypeOrNamespace (rc);
+						return ResolveAsTypeOrNamespace (rc, false);
+					}
+				}
+
+				var mg = NamespaceContainer.LookupStaticUsings (rc, Name, Arity, loc);
+				if (mg != null) {
+					if (Arity > 0) {
+						targs.Resolve (rc);
+						mg.SetTypeArguments (rc, targs);
 					}
+					return mg;
 				}
 
+				if (Name == "nameof")
+					return new NameOf (this);
+
 				if (errorMode) {
 					if (variable_found) {
 						rc.Report.Error (841, loc, "A local variable `{0}' cannot be used before it is declared", Name);
@@ -2786,17 +2876,6 @@ namespace Mono.CSharp {
 
 								ct = ct.DeclaringType;
 							} while (ct != null);
-						} else {
-							var cos = rc.CurrentMemberDefinition.Parent as ClassOrStruct;
-							if (cos != null && cos.PrimaryConstructorParameters != null) {
-								foreach (var p in cos.PrimaryConstructorParameters.FixedParameters) {
-									if (p.Name == Name) {
-										rc.Report.Error (9007, loc, "Primary constructor parameter `{0}' is not available in this context when using ref or out modifier",
-											Name);
-										return null;
-									}
-								}
-							}
 						}
 
 						if ((restrictions & MemberLookupRestrictions.InvocableOnly) == 0) {
@@ -2816,7 +2895,7 @@ namespace Mono.CSharp {
 
 						e = rc.LookupNamespaceOrType (Name, -System.Math.Max (1, Arity), LookupMode.Probing, loc);
 						if (e != null) {
-							if (e.Type.Arity != Arity) {
+							if (e.Type.Arity != Arity && (restrictions & MemberLookupRestrictions.IgnoreArity) == 0) {
 								Error_TypeArgumentsCannotBeUsed (rc, e.Type, loc);
 								return e;
 							}
@@ -2830,7 +2909,7 @@ namespace Mono.CSharp {
 							}
 						}
 
-						rc.Report.Error (103, loc, "The name `{0}' does not exist in the current context", Name);
+						Error_NameDoesNotExist (rc);
 					}
 
 					return ErrorExpression.Instance;
@@ -2896,16 +2975,16 @@ namespace Mono.CSharp {
 			throw new NotSupportedException ("ET");
 		}
 
-		public abstract FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc);
+		public abstract FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc, bool allowUnboundTypeArguments);
 
 		//
 		// This is used to resolve the expression as a type, a null
 		// value will be returned if the expression is not a type
 		// reference
 		//
-		public override TypeSpec ResolveAsType (IMemberContext mc)
+		public override TypeSpec ResolveAsType (IMemberContext mc, bool allowUnboundTypeArguments = false)
 		{
-			FullNamedExpression fne = ResolveAsTypeOrNamespace (mc);
+			FullNamedExpression fne = ResolveAsTypeOrNamespace (mc, allowUnboundTypeArguments);
 
 			if (fne == null)
 				return null;
@@ -2956,7 +3035,7 @@ namespace Mono.CSharp {
 	/// </summary>
 	public abstract class TypeExpr : FullNamedExpression
 	{
-		public sealed override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc)
+		public sealed override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc, bool allowUnboundTypeArguments)
 		{
 			ResolveAsType (mc);
 			return this;
@@ -2995,7 +3074,7 @@ namespace Mono.CSharp {
 			loc = l;
 		}
 
-		public sealed override TypeSpec ResolveAsType (IMemberContext ec)
+		public sealed override TypeSpec ResolveAsType (IMemberContext mc, bool allowUnboundTypeArguments = false)
 		{
 			return type;
 		}
@@ -3029,7 +3108,7 @@ namespace Mono.CSharp {
 			throw new NotImplementedException ();
 		}
 
-		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc)
+		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc, bool allowUnboundTypeArguments)
 		{
 			return this;
 		}
@@ -3120,6 +3199,8 @@ namespace Mono.CSharp {
 	/// </summary>
 	public abstract class MemberExpr : Expression, OverloadResolver.IInstanceQualifier
 	{
+		protected bool conditional_access_receiver;
+
 		//
 		// An instance expression associated with this member, if it's a
 		// non-static member
@@ -3158,6 +3239,8 @@ namespace Mono.CSharp {
 			get;
 		}
 
+		public bool ConditionalAccess { get; set; }
+
 		protected abstract TypeSpec DeclaringType {
 			get;
 		}
@@ -3296,6 +3379,11 @@ namespace Mono.CSharp {
 			return InstanceExpression != null && InstanceExpression.ContainsEmitWithAwait ();
 		}
 
+		public override bool HasConditionalAccess ()
+		{
+			return ConditionalAccess || (InstanceExpression != null && InstanceExpression.HasConditionalAccess ());
+		}
+
 		static bool IsSameOrBaseQualifier (TypeSpec type, TypeSpec qtype)
 		{
 			do {
@@ -3351,8 +3439,23 @@ namespace Mono.CSharp {
 
 		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
-			if (InstanceExpression != null)
+			if (InstanceExpression != null) {
 				InstanceExpression.FlowAnalysis (fc);
+
+				if (ConditionalAccess) {
+					fc.BranchConditionalAccessDefiniteAssignment ();
+				}
+			}
+		}
+
+		protected void ResolveConditionalAccessReceiver (ResolveContext rc)
+		{
+			if (!rc.HasSet (ResolveContext.Options.ConditionalAccessReceiver)) {
+				if (HasConditionalAccess ()) {
+					conditional_access_receiver = true;
+					rc.Set (ResolveContext.Options.ConditionalAccessReceiver);
+				}
+			}
 		}
 
 		public bool ResolveInstanceExpression (ResolveContext rc, Expression rhs)
@@ -3363,7 +3466,7 @@ namespace Mono.CSharp {
 			//
 			// Check intermediate value modification which won't have any effect
 			//
-			if (rhs != null && InstanceExpression.Type.IsStruct) {
+			if (rhs != null && TypeSpec.IsValueType (InstanceExpression.Type)) {
 				var fexpr = InstanceExpression as FieldExpr;
 				if (fexpr != null) {
 					if (!fexpr.Spec.IsReadOnly || rc.HasAny (ResolveContext.Options.FieldInitializerScope | ResolveContext.Options.ConstructorScope))
@@ -3501,7 +3604,7 @@ namespace Mono.CSharp {
 
 		public virtual MemberExpr ResolveMemberAccess (ResolveContext ec, Expression left, SimpleName original)
 		{
-			if (left != null && left.IsNull && TypeSpec.IsReferenceType (left.Type)) {
+			if (left != null && !ConditionalAccess && left.IsNull && TypeSpec.IsReferenceType (left.Type)) {
 				ec.Report.Warning (1720, 1, left.Location,
 					"Expression will always cause a `{0}'", "System.NullReferenceException");
 			}
@@ -3512,25 +3615,8 @@ namespace Mono.CSharp {
 
 		protected void EmitInstance (EmitContext ec, bool prepare_for_load)
 		{
-			TypeSpec instance_type = InstanceExpression.Type;
-			if (TypeSpec.IsValueType (instance_type)) {
-				if (InstanceExpression is IMemoryLocation) {
-					((IMemoryLocation) InstanceExpression).AddressOf (ec, AddressOp.Load);
-				} else {
-					// Cannot release the temporary variable when its address
-					// is required to be on stack for any parent
-					LocalTemporary t = new LocalTemporary (instance_type);
-					InstanceExpression.Emit (ec);
-					t.Store (ec);
-					t.AddressOf (ec, AddressOp.Store);
-				}
-			} else {
-				InstanceExpression.Emit (ec);
-
-				// Only to make verifier happy
-				if (instance_type.IsGenericParameter && !(InstanceExpression is This) && TypeSpec.IsReferenceType (instance_type))
-					ec.Emit (OpCodes.Box, instance_type);
-			}
+			var inst = new InstanceEmitter (InstanceExpression, TypeSpec.IsValueType (InstanceExpression.Type));
+			inst.Emit (ec, ConditionalAccess);
 
 			if (prepare_for_load)
 				ec.Emit (OpCodes.Dup);
@@ -3598,6 +3684,13 @@ namespace Mono.CSharp {
 			get { return true; }
 		}
 
+		public override void FlowAnalysis (FlowAnalysisContext fc)
+		{
+			if (ConditionalAccess) {
+				fc.BranchConditionalAccessDefiniteAssignment ();
+			}
+		}
+
 		//
 		// For extension methodgroup we are not looking for base members but parent
 		// namespace extension methods
@@ -3634,7 +3727,8 @@ namespace Mono.CSharp {
 				return null;
 
 			var cand = candidates;
-			arguments.Insert (0, new Argument (ExtensionExpression, Argument.AType.ExtensionType));
+			var atype = ConditionalAccess ? Argument.AType.ExtensionTypeConditionalAccess : Argument.AType.ExtensionType;
+			arguments.Insert (0, new Argument (ExtensionExpression, atype));
 			var res = base.OverloadResolve (ec, ref arguments, ehandler ?? this, restr);
 			
 			// Restore candidates in case we are running in probing mode 
@@ -3830,7 +3924,10 @@ namespace Mono.CSharp {
 			if (IsConditionallyExcluded)
 				ec.Report.Error (765, loc,
 					"Partial methods with only a defining declaration or removed conditional methods cannot be used in an expression tree");
-			
+
+			if (ConditionalAccess)
+				Error_NullShortCircuitInsideExpressionTree (ec);
+
 			return new TypeOfMethod (best_candidate, loc);
 		}
 		
@@ -3851,12 +3948,28 @@ namespace Mono.CSharp {
 		{
 			throw new NotSupportedException ();
 		}
-		
-		public void EmitCall (EmitContext ec, Arguments arguments)
+
+		public void EmitCall (EmitContext ec, Arguments arguments, bool statement)
 		{
 			var call = new CallEmitter ();
 			call.InstanceExpression = InstanceExpression;
-			call.Emit (ec, best_candidate, arguments, loc);			
+			call.ConditionalAccess = ConditionalAccess;
+
+			if (statement)
+				call.EmitStatement (ec, best_candidate, arguments, loc);
+			else
+				call.Emit (ec, best_candidate, arguments, loc);
+		}
+
+		public void EmitCall (EmitContext ec, Arguments arguments, TypeSpec conditionalAccessReceiver, bool statement)
+		{
+			ec.ConditionalAccess = new ConditionalAccessContext (conditionalAccessReceiver, ec.DefineLabel ()) {
+				Statement = statement
+			};
+
+			EmitCall (ec, arguments, statement);
+
+			ec.CloseConditionalAccess (!statement && best_candidate_return != conditionalAccessReceiver && conditionalAccessReceiver.IsNullableType ? conditionalAccessReceiver : null);
 		}
 
 		public override void Error_ValueCannotBeConverted (ResolveContext ec, TypeSpec target, bool expl)
@@ -3906,8 +4019,15 @@ namespace Mono.CSharp {
 
 			// TODO: When in probing mode do IsApplicable only and when called again do VerifyArguments for full error reporting
 			best_candidate = r.ResolveMember<MethodSpec> (ec, ref args);
-			if (best_candidate == null)
-				return r.BestCandidateIsDynamic ? this : null;
+			if (best_candidate == null) {
+				if (!r.BestCandidateIsDynamic)
+					return null;
+
+				if (simple_name != null && ec.IsStatic)
+					InstanceExpression = ProbeIdenticalTypeName (ec, InstanceExpression, simple_name);
+
+				return this;
+			}
 
 			// Overload resolver had to create a new method group, all checks bellow have already been executed
 			if (r.BestCandidateNewMethodGroup != null)
@@ -3918,7 +4038,7 @@ namespace Mono.CSharp {
 					if (best_candidate.IsExtensionMethod && args[0].Expr == InstanceExpression) {
 						InstanceExpression = null;
 					} else {
-						if (best_candidate.IsStatic && simple_name != null) {
+						if (simple_name != null && best_candidate.IsStatic) {
 							InstanceExpression = ProbeIdenticalTypeName (ec, InstanceExpression, simple_name);
 						}
 
@@ -4045,7 +4165,8 @@ namespace Mono.CSharp {
 			ProbingOnly	= 1 << 1,
 			CovariantDelegate = 1 << 2,
 			NoBaseMembers = 1 << 3,
-			BaseMembersIncluded = 1 << 4
+			BaseMembersIncluded = 1 << 4,
+			GetEnumeratorLookup = 1 << 5
 		}
 
 		public interface IBaseMembersProvider
@@ -4246,7 +4367,6 @@ namespace Mono.CSharp {
 				if (!TypeSpecComparer.Equals (p_m.Parameters.Types, q_m.Parameters.Types))
 					return 0;
 
-				var orig_p = p;
 				p = p_m.ReturnType;
 				var orig_q = q;
 				q = q_m.ReturnType;
@@ -4276,33 +4396,34 @@ namespace Mono.CSharp {
 						q = q.TypeArguments[0];
 						p = p.TypeArguments[0];
 					}
-				} else if (q != p) {
+				}
+
+				if (q != p) {
 					//
-					// LAMESPEC: Lambda expression returning dynamic type has identity (better) conversion to delegate returning object type
+					// An inferred return type X exists for E in the context of that parameter list, and 
+					// the conversion from X to Y1 is better than the conversion from X to Y2
 					//
-					if (q.BuiltinType == BuiltinTypeSpec.Type.Object) {
-						var am_rt = am.InferReturnType (ec, null, orig_q);
-						if (am_rt != null && am_rt.BuiltinType == BuiltinTypeSpec.Type.Dynamic)
-							return 2;
-					} else if (p.BuiltinType == BuiltinTypeSpec.Type.Object) {
-						var am_rt = am.InferReturnType (ec, null, orig_p);
-						if (am_rt != null && am_rt.BuiltinType == BuiltinTypeSpec.Type.Dynamic)
-							return 1;
+					argument_type = am.InferReturnType (ec, null, orig_q);
+					if (argument_type == null) {
+						// TODO: Can this be hit?
+						return 1;
 					}
+
+					if (argument_type.BuiltinType == BuiltinTypeSpec.Type.Dynamic)
+						argument_type = ec.BuiltinTypes.Object;
 				}
+			}
 
-				//
-				// The parameters are identicial and return type is not void, use better type conversion
-				// on return type to determine better one
-				//
-			} else {
-				if (argument_type == p)
-					return 1;
+			if (argument_type == p)
+				return 1;
 
-				if (argument_type == q)
-					return 2;
-			}
+			if (argument_type == q)
+				return 2;
 
+			//
+			// The parameters are identicial and return type is not void, use better type conversion
+			// on return type to determine better one
+			//
 			return BetterTypeConversion (ec, p, q);
 		}
 
@@ -4606,7 +4727,7 @@ namespace Mono.CSharp {
 		// 0 = the best, int.MaxValue = the worst
 		// -1 = fatal error
 		//
-		int IsApplicable (ResolveContext ec, ref Arguments arguments, int arg_count, ref MemberSpec candidate, IParametersMember pm, ref bool params_expanded_form, ref bool dynamicArgument, ref TypeSpec returnType)
+		int IsApplicable (ResolveContext ec, ref Arguments arguments, int arg_count, ref MemberSpec candidate, IParametersMember pm, ref bool params_expanded_form, ref bool dynamicArgument, ref TypeSpec returnType, bool errorMode)
 		{
 			// Parameters of most-derived type used mainly for named and optional parameters
 			var pd = pm.Parameters;
@@ -4799,6 +4920,13 @@ namespace Mono.CSharp {
 						lambda_conv_msgs.ClearSession ();
 
 					if (i_args.Length != 0) {
+						if (!errorMode) {
+							foreach (var ta in i_args) {
+								if (!ta.IsAccessible (ec))
+									return ti.InferenceScore - 10000;
+							}
+						}
+
 						ms = ms.MakeGenericMethod (ec, i_args);
 					}
 				}
@@ -4896,7 +5024,7 @@ namespace Mono.CSharp {
 
 				score = 1;
 				if (!params_expanded_form) {
-					if (a.ArgType == Argument.AType.ExtensionType) {
+					if (a.IsExtensionType) {
 						//
 						// Indentity, implicit reference or boxing conversion must exist for the extension parameter
 						//
@@ -5152,7 +5280,7 @@ namespace Mono.CSharp {
 						bool params_expanded_form = false;
 						bool dynamic_argument = false;
 						TypeSpec rt = pm.MemberType;
-						int candidate_rate = IsApplicable (rc, ref candidate_args, args_count, ref member, pm, ref params_expanded_form, ref dynamic_argument, ref rt);
+						int candidate_rate = IsApplicable (rc, ref candidate_args, args_count, ref member, pm, ref params_expanded_form, ref dynamic_argument, ref rt, error_mode);
 
 						if (lambda_conv_msgs != null)
 							lambda_conv_msgs.EndSession ();
@@ -5166,13 +5294,17 @@ namespace Mono.CSharp {
 							if (candidate_rate < 0)
 								return null;
 
-							best_candidate_rate = candidate_rate;
-							best_candidate = member;
-							best_candidate_args = candidate_args;
-							best_candidate_params = params_expanded_form;
-							best_candidate_dynamic = dynamic_argument;
-							best_parameter_member = pm;
-							best_candidate_return_type = rt;
+							if ((restrictions & Restrictions.GetEnumeratorLookup) != 0 && candidate_args.Count != 0) {
+								// Only parameterless methods are considered
+							} else {
+								best_candidate_rate = candidate_rate;
+								best_candidate = member;
+								best_candidate_args = candidate_args;
+								best_candidate_params = params_expanded_form;
+								best_candidate_dynamic = dynamic_argument;
+								best_parameter_member = pm;
+								best_candidate_return_type = rt;
+							}
 						} else if (candidate_rate == 0) {
 							//
 							// The member look is done per type for most operations but sometimes
@@ -5280,7 +5412,7 @@ namespace Mono.CSharp {
 			}
 
 			if (best_candidate_dynamic) {
-				if (args[0].ArgType == Argument.AType.ExtensionType) {
+				if (args[0].IsExtensionType) {
 					rc.Report.Error (1973, loc,
 						"Type `{0}' does not contain a member `{1}' and the best extension method overload `{2}' cannot be dynamically dispatched. Consider calling the method without the extension method syntax",
 						args [0].Type.GetSignatureForError (), best_candidate.Name, best_candidate.GetSignatureForError ());
@@ -5526,6 +5658,9 @@ namespace Mono.CSharp {
 				break;
 			}
 
+			if (args == null)
+				return false;
+
 			foreach (var arg in args) {
 				var na = arg as NamedArgument;
 				if (na == null)
@@ -5546,7 +5681,8 @@ namespace Mono.CSharp {
 		bool VerifyArguments (ResolveContext ec, ref Arguments args, MemberSpec member, IParametersMember pm, bool chose_params_expanded)
 		{
 			var pd = pm.Parameters;
-			TypeSpec[] ptypes = ((IParametersMember) member).Parameters.Types;
+			var cpd = ((IParametersMember) member).Parameters;
+			var ptypes = cpd.Types;
 
 			Parameter.Modifier p_mod = 0;
 			TypeSpec pt = null;
@@ -5562,7 +5698,7 @@ namespace Mono.CSharp {
 					continue;
 
 				if (p_mod != Parameter.Modifier.PARAMS) {
-					p_mod = pd.FixedParameters[a_idx].ModFlags;
+					p_mod = cpd.FixedParameters [a_idx].ModFlags;
 					pt = ptypes[a_idx];
 					has_unsafe_arg |= pt.IsPointer;
 
@@ -5623,7 +5759,7 @@ namespace Mono.CSharp {
 				}
 
 				Expression conv;
-				if (a.ArgType == Argument.AType.ExtensionType) {
+				if (a.IsExtensionType) {
 					if (a.Expr.Type == pt || TypeSpecComparer.IsEqual (a.Expr.Type, pt)) {
 						conv = a.Expr;
 					} else {
@@ -5663,7 +5799,7 @@ namespace Mono.CSharp {
 			//
 			// Fill not provided arguments required by params modifier
 			//
-			if (params_initializers == null && pd.HasParams && arg_count + 1 == pd.Count) {
+			if (params_initializers == null && arg_count + 1 == pd.Count) {
 				if (args == null)
 					args = new Arguments (1);
 
@@ -5877,6 +6013,10 @@ namespace Mono.CSharp {
 
 		public override Expression CreateExpressionTree (ResolveContext ec)
 		{
+			if (ConditionalAccess) {
+				Error_NullShortCircuitInsideExpressionTree (ec);
+			}
+
 			return CreateExpressionTree (ec, true);
 		}
 
@@ -5919,6 +6059,8 @@ namespace Mono.CSharp {
 			bool lvalue_instance = rhs != null && IsInstance && spec.DeclaringType.IsStruct;
 
 			if (rhs != this) {
+				ResolveConditionalAccessReceiver (ec);
+
 				if (ResolveInstanceExpression (ec, rhs)) {
 					// Resolve the field's instance expression while flow analysis is turned
 					// off: when accessing a field "a.b", we must check whether the field
@@ -5940,6 +6082,9 @@ namespace Mono.CSharp {
 				}
 
 				DoBestMemberChecks (ec, spec);
+
+				if (conditional_access_receiver)
+					ec.With (ResolveContext.Options.ConditionalAccessReceiver, false);
 			}
 
 			var fb = spec as FixedFieldSpec;
@@ -5970,6 +6115,14 @@ namespace Mono.CSharp {
 				variable_info = var.VariableInfo.GetStructFieldInfo (Name);
 			}
 
+			if (ConditionalAccess) {
+				if (conditional_access_receiver)
+					type = LiftMemberType (ec, type);
+
+				if (InstanceExpression.IsNull)
+					return Constant.CreateConstantFromValue (type, null, loc);
+			}
+
 			eclass = ExprClass.Variable;
 			return this;
 		}
@@ -6064,8 +6217,11 @@ namespace Mono.CSharp {
 			return null;
 		}
 
-		override public Expression DoResolveLValue (ResolveContext ec, Expression right_side)
+		public override Expression DoResolveLValue (ResolveContext ec, Expression right_side)
 		{
+			if (ConditionalAccess)
+				throw new NotSupportedException ("null propagating operator assignment");
+
 			if (spec is FixedFieldSpec) {
 				// It could be much better error message but we want to be error compatible
 				Error_ValueAssignment (ec, right_side);
@@ -6130,6 +6286,9 @@ namespace Mono.CSharp {
 			}
 
 			base.FlowAnalysis (fc);
+
+			if (conditional_access_receiver)
+				fc.ConditionalAccessEnd ();
 		}
 
 		public override int GetHashCode ()
@@ -6176,8 +6335,12 @@ namespace Mono.CSharp {
 
 				ec.Emit (OpCodes.Ldsfld, spec);
 			} else {
-				if (!prepared)
+				if (!prepared) {
+					if (conditional_access_receiver)
+						ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ());
+
 					EmitInstance (ec, false);
+				}
 
 				// Optimization for build-in types
 				if (type.IsStruct && type == ec.CurrentType && InstanceExpression.Type == type) {
@@ -6194,6 +6357,10 @@ namespace Mono.CSharp {
 						ec.Emit (OpCodes.Ldfld, spec);
 					}
 				}
+
+				if (conditional_access_receiver) {
+					ec.CloseConditionalAccess (type.IsNullableType && type != spec.MemberType ? type : null);
+				}
 			}
 
 			if (leave_copy) {
@@ -6213,6 +6380,9 @@ namespace Mono.CSharp {
 			}
 
 			if (IsInstance) {
+				if (ConditionalAccess)
+					throw new NotImplementedException ("null operator assignment");
+
 				if (has_await_source)
 					source = source.EmitToField (ec);
 
@@ -6435,6 +6605,10 @@ namespace Mono.CSharp {
 
 		public override Expression CreateExpressionTree (ResolveContext ec)
 		{
+			if (ConditionalAccess) {
+				Error_NullShortCircuitInsideExpressionTree (ec);
+			}
+
 			Arguments args;
 			if (IsSingleDimensionalArrayLength ()) {
 				args = new Arguments (1);
@@ -6502,9 +6676,19 @@ namespace Mono.CSharp {
 			// Special case: length of single dimension array property is turned into ldlen
 			//
 			if (IsSingleDimensionalArrayLength ()) {
+				if (conditional_access_receiver) {
+					ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ());
+				}
+
 				EmitInstance (ec, false);
+
 				ec.Emit (OpCodes.Ldlen);
 				ec.Emit (OpCodes.Conv_I4);
+
+				if (conditional_access_receiver) {
+					ec.CloseConditionalAccess (type);
+				}
+
 				return;
 			}
 
@@ -6561,7 +6745,14 @@ namespace Mono.CSharp {
 			if (args == null)
 				call.InstanceExpressionOnStack = true;
 
-			call.Emit (ec, Setter, args, loc);
+			if (ConditionalAccess) {
+				call.ConditionalAccess = true;
+			}
+
+			if (leave_copy)
+				call.Emit (ec, Setter, args, loc);
+			else
+				call.EmitStatement (ec, Setter, args, loc);
 
 			if (temp != null) {
 				temp.Emit (ec);
@@ -6573,6 +6764,14 @@ namespace Mono.CSharp {
 			}
 		}
 
+		public override void FlowAnalysis (FlowAnalysisContext fc)
+		{
+			base.FlowAnalysis (fc);
+
+			if (conditional_access_receiver)
+				fc.ConditionalAccessEnd ();
+		}
+
 		protected override Expression OverloadResolve (ResolveContext rc, Expression right_side)
 		{
 			eclass = ExprClass.PropertyAccess;
@@ -6659,12 +6858,19 @@ namespace Mono.CSharp {
 		protected override Expression DoResolve (ResolveContext ec)
 		{
 			if (eclass == ExprClass.Unresolved) {
+				ResolveConditionalAccessReceiver (ec);
+
 				var expr = OverloadResolve (ec, null);
 				if (expr == null)
 					return null;
 
 				if (expr != this)
 					return expr.Resolve (ec);
+
+				if (conditional_access_receiver) {
+					type = LiftMemberType (ec, type);
+					ec.With (ResolveContext.Options.ConditionalAccessReceiver, false);
+				}
 			}
 
 			if (!ResolveGetter (ec))
@@ -6675,6 +6881,9 @@ namespace Mono.CSharp {
 
 		public override Expression DoResolveLValue (ResolveContext ec, Expression right_side)
 		{
+			if (ConditionalAccess)
+				throw new NotSupportedException ("null propagating operator assignment");
+
 			if (right_side == EmptyExpression.OutAccess) {
 				// TODO: best_candidate can be null at this point
 				INamedBlockVariable variable = null;
@@ -6704,19 +6913,32 @@ namespace Mono.CSharp {
 			return this;
 		}
 
+		void EmitConditionalAccess (EmitContext ec, ref CallEmitter call, MethodSpec method, Arguments arguments)
+		{
+			ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ());
+
+			call.Emit (ec, method, arguments, loc);
+
+			ec.CloseConditionalAccess (method.ReturnType != type && type.IsNullableType ? type : null);
+		}
+
 		//
 		// Implements the IAssignMethod interface for assignments
 		//
 		public virtual void Emit (EmitContext ec, bool leave_copy)
 		{
 			var call = new CallEmitter ();
+			call.ConditionalAccess = ConditionalAccess;
 			call.InstanceExpression = InstanceExpression;
 			if (has_await_arguments)
 				call.HasAwaitArguments = true;
 			else
 				call.DuplicateArguments = emitting_compound_assignment;
 
-			call.Emit (ec, Getter, Arguments, loc);
+			if (conditional_access_receiver)
+				EmitConditionalAccess (ec, ref call, Getter, Arguments);
+			else
+				call.Emit (ec, Getter, Arguments, loc);
 
 			if (call.HasAwaitArguments) {
 				InstanceExpression = call.InstanceExpression;
@@ -6945,9 +7167,18 @@ namespace Mono.CSharp {
 			Arguments args = new Arguments (1);
 			args.Add (new Argument (source));
 
+			// TODO: Wrong, needs receiver
+//			if (NullShortCircuit) {
+//				ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ());
+//			}
+
 			var call = new CallEmitter ();
 			call.InstanceExpression = InstanceExpression;
-			call.Emit (ec, op, args, loc);
+			call.ConditionalAccess = ConditionalAccess;
+			call.EmitStatement (ec, op, args, loc);
+
+//			if (NullShortCircuit)
+//				ec.CloseConditionalAccess (null);
 		}
 
 		#endregion
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/enum.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/enum.cs
index ab3f9fe5..96385f62 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/enum.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/enum.cs
@@ -28,7 +28,7 @@ namespace Mono.CSharp {
 	{
 		class EnumTypeExpr : TypeExpr
 		{
-			public override TypeSpec ResolveAsType (IMemberContext ec)
+			public override TypeSpec ResolveAsType (IMemberContext ec, bool allowUnboundTypeArguments)
 			{
 				type = ec.CurrentType;
 				eclass = ExprClass.Type;
@@ -64,11 +64,12 @@ namespace Mono.CSharp {
 			if (expr is EnumConstant)
 				expr = ((EnumConstant) expr).Child;
 
-			var underlying = ((Enum) Parent).UnderlyingType;
+			var en = (Enum)Parent;
+			var underlying = en.UnderlyingType;
 			if (expr != null) {
 				expr = expr.ImplicitConversionRequired (rc, underlying);
 				if (expr != null && !IsValidEnumType (expr.Type)) {
-					Enum.Error_1008 (Location, Report);
+					en.Error_UnderlyingType (Location);
 					expr = null;
 				}
 			}
@@ -217,7 +218,7 @@ namespace Mono.CSharp {
 			AddMember (em);
 		}
 
-		public static void Error_1008 (Location loc, Report Report)
+		public void Error_UnderlyingType (Location loc)
 		{
 			Report.Error (1008, loc,
 				"Type byte, sbyte, short, ushort, int, uint, long or ulong expected");
@@ -225,7 +226,21 @@ namespace Mono.CSharp {
 
 		protected override void DoDefineContainer ()
 		{
-			((EnumSpec) spec).UnderlyingType = underlying_type_expr == null ? Compiler.BuiltinTypes.Int : underlying_type_expr.Type;
+			TypeSpec ut;
+			if (underlying_type_expr != null) {
+				ut = underlying_type_expr.ResolveAsType (this);
+				if (!EnumSpec.IsValidUnderlyingType (ut)) {
+					Error_UnderlyingType (underlying_type_expr.Location);
+					ut = null;
+				}
+			} else {
+				ut = null;
+			}
+
+			if (ut == null)
+				ut = Compiler.BuiltinTypes.Int;
+
+			((EnumSpec) spec).UnderlyingType = ut;
 
 			TypeBuilder.DefineField (UnderlyingValueField, UnderlyingType.GetMetaInfo (),
 				FieldAttributes.Public | FieldAttributes.SpecialName | FieldAttributes.RTSpecialName);
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/eval.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/eval.cs
index 1645b601..aac77eee 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/eval.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/eval.cs
@@ -25,6 +25,11 @@ namespace Mono.CSharp
 {
 
 	/// <summary>
+	/// Experimental!
+	/// </summary>
+	public delegate void ValueModificationHandler (string variableName, int row, int column, object value);
+
+	/// <summary>
 	///   Evaluator: provides an API to evaluate C# statements and
 	///   expressions dynamically.
 	/// </summary>
@@ -476,8 +481,10 @@ namespace Mono.CSharp
 			return result;
 		}
 
-		// Experimental
-		public Action<string, int, int, object> ModificationListener { get; set; }
+		/// <summary>
+		/// Experimental!
+		/// </summary>
+		public ValueModificationHandler ModificationListener { get; set; }
 
 		enum InputKind {
 			EOF,
@@ -1292,11 +1299,11 @@ namespace Mono.CSharp
 
 	static class ListenerProxy
 	{
-		static readonly Dictionary<int, Action<string, int, int, object>> listeners = new Dictionary<int, Action<string, int, int, object>> (); 
+		static readonly Dictionary<int, ValueModificationHandler> listeners = new Dictionary<int, ValueModificationHandler> ();
 
 		static int counter;
 
-		public static int Register (Action<string, int, int, object> listener)
+		public static int Register (ValueModificationHandler listener)
 		{
 			lock (listeners) {
 				var id = counter++;
@@ -1314,7 +1321,7 @@ namespace Mono.CSharp
 
 		public static void ValueChanged (object value, int row, int col, string name, int listenerId)
 		{
-			Action<string, int, int, object> action;
+			ValueModificationHandler action;
 			lock (listeners) {
 				if (!listeners.TryGetValue (listenerId, out action))
 					return;
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/expression.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/expression.cs
index cae61ece..3a076077 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/expression.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/expression.cs
@@ -80,7 +80,7 @@ namespace Mono.CSharp
 		public override void Emit (EmitContext ec)
 		{
 			var call = new CallEmitter ();
-			call.EmitPredefined (ec, oper, arguments, loc);
+			call.Emit (ec, oper, arguments, loc);
 		}
 
 		public override void FlowAnalysis (FlowAnalysisContext fc)
@@ -139,7 +139,7 @@ namespace Mono.CSharp
 
 		public readonly Operator Oper;
 		public Expression Expr;
-		Expression enum_conversion;
+		ConvCast.Mode enum_conversion;
 
 		public Unary (Operator op, Expression expr, Location loc)
 		{
@@ -373,7 +373,7 @@ namespace Mono.CSharp
 				return null;
 
 			Expr = best_expr;
-			enum_conversion = Convert.ExplicitNumericConversion (ec, new EmptyExpression (best_expr.Type), underlying_type);
+			enum_conversion = Binary.GetEnumResultCast (underlying_type);
 			type = expr.Type;
 			return EmptyCast.Create (this, type);
 		}
@@ -583,8 +583,11 @@ namespace Mono.CSharp
 			//
 			// Same trick as in Binary expression
 			//
-			if (enum_conversion != null)
-				enum_conversion.Emit (ec);
+			if (enum_conversion != 0) {
+				using (ec.With (BuilderContext.Options.CheckedScope, false)) {
+					ConvCast.Emit (ec, enum_conversion);
+				}
+			}
 		}
 
 		public override void EmitBranchable (EmitContext ec, Label target, bool on_true)
@@ -608,6 +611,16 @@ namespace Mono.CSharp
 
 		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
+			FlowAnalysis (fc, false);
+		}
+
+		public override void FlowAnalysisConditional (FlowAnalysisContext fc)
+		{
+			FlowAnalysis (fc, true);
+		}
+
+		void FlowAnalysis (FlowAnalysisContext fc, bool conditional)
+		{
 			if (Oper == Operator.AddressOf) {
 				var vr = Expr as VariableReference;
 				if (vr != null && vr.VariableInfo != null)
@@ -616,12 +629,14 @@ namespace Mono.CSharp
 				return;
 			}
 
-			Expr.FlowAnalysis (fc);
+			if (Oper == Operator.LogicalNot && conditional) {
+				Expr.FlowAnalysisConditional (fc);
 
-			if (Oper == Operator.LogicalNot) {
 				var temp = fc.DefiniteAssignmentOnTrue;
 				fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse;
 				fc.DefiniteAssignmentOnFalse = temp;
+			} else {
+				Expr.FlowAnalysis (fc);
 			}
 		}
 
@@ -1143,7 +1158,7 @@ namespace Mono.CSharp
 		{
 			expr = expr.Resolve (ec);
 			
-			if (expr == null)
+			if (expr == null || expr.Type == InternalType.ErrorType)
 				return null;
 
 			if (expr.Type.BuiltinType == BuiltinTypeSpec.Type.Dynamic) {
@@ -1418,30 +1433,30 @@ namespace Mono.CSharp
 			return expr.ContainsEmitWithAwait ();
 		}
 
-		protected override Expression DoResolve (ResolveContext ec)
+		protected Expression ResolveCommon (ResolveContext rc)
 		{
-			probe_type_expr = ProbeType.ResolveAsType (ec);
-			if (probe_type_expr == null)
-				return null;
-
-			expr = expr.Resolve (ec);
+			expr = expr.Resolve (rc);
 			if (expr == null)
 				return null;
 
+			ResolveProbeType (rc);
+			if (probe_type_expr == null)
+				return this;
+
 			if (probe_type_expr.IsStatic) {
-				ec.Report.Error (7023, loc, "The second operand of `is' or `as' operator cannot be static type `{0}'",
+				rc.Report.Error (7023, loc, "The second operand of `is' or `as' operator cannot be static type `{0}'",
 					probe_type_expr.GetSignatureForError ());
 				return null;
 			}
 			
 			if (expr.Type.IsPointer || probe_type_expr.IsPointer) {
-				ec.Report.Error (244, loc, "The `{0}' operator cannot be applied to an operand of pointer type",
+				rc.Report.Error (244, loc, "The `{0}' operator cannot be applied to an operand of pointer type",
 					OperatorName);
 				return null;
 			}
 
-			if (expr.Type == InternalType.AnonymousMethod) {
-				ec.Report.Error (837, loc, "The `{0}' operator cannot be applied to a lambda expression or anonymous method",
+			if (expr.Type == InternalType.AnonymousMethod || expr.Type == InternalType.MethodGroup) {
+				rc.Report.Error (837, loc, "The `{0}' operator cannot be applied to a lambda expression, anonymous method, or method group",
 					OperatorName);
 				return null;
 			}
@@ -1449,6 +1464,11 @@ namespace Mono.CSharp
 			return this;
 		}
 
+		protected virtual void ResolveProbeType (ResolveContext rc)
+		{
+			probe_type_expr = ProbeType.ResolveAsType (rc);
+		}
+
 		public override void EmitSideEffect (EmitContext ec)
 		{
 			expr.EmitSideEffect (ec);
@@ -1477,6 +1497,8 @@ namespace Mono.CSharp
 	public class Is : Probe
 	{
 		Nullable.Unwrap expr_unwrap;
+		MethodSpec number_mg;
+		Arguments number_args;
 
 		public Is (Expression expr, Expression probe_type, Location l)
 			: base (expr, probe_type, l)
@@ -1487,64 +1509,252 @@ namespace Mono.CSharp
 			get { return "is"; }
 		}
 
+		public LocalVariable Variable { get; set; }
+
 		public override Expression CreateExpressionTree (ResolveContext ec)
 		{
+			if (Variable != null)
+				throw new NotSupportedException ();
+
 			Arguments args = Arguments.CreateForExpressionTree (ec, null,
 				expr.CreateExpressionTree (ec),
 				new TypeOf (probe_type_expr, loc));
 
 			return CreateExpressionFactoryCall (ec, "TypeIs", args);
 		}
-		
+
+		Expression CreateConstantResult (ResolveContext rc, bool result)
+		{
+			if (result)
+				rc.Report.Warning (183, 1, loc, "The given expression is always of the provided (`{0}') type",
+					probe_type_expr.GetSignatureForError ());
+			else
+				rc.Report.Warning (184, 1, loc, "The given expression is never of the provided (`{0}') type",
+					probe_type_expr.GetSignatureForError ());
+
+			var c = new BoolConstant (rc.BuiltinTypes, result, loc);
+			return expr.IsSideEffectFree ?
+				ReducedExpression.Create (c, this) :
+				new SideEffectConstant (c, this, loc);
+		}
+
 		public override void Emit (EmitContext ec)
 		{
+			if (probe_type_expr == null) {
+				EmitConstantMatch (ec);
+				return;
+			}
+
+			EmitLoad (ec);
+
+			if (expr_unwrap == null) {
+				ec.EmitNull ();
+				ec.Emit (OpCodes.Cgt_Un);
+			}
+		}
+
+		public override void EmitBranchable (EmitContext ec, Label target, bool on_true)
+		{
+			if (probe_type_expr == null) {
+				EmitConstantMatch (ec);
+			} else {
+				EmitLoad (ec);
+			}
+
+			ec.Emit (on_true ? OpCodes.Brtrue : OpCodes.Brfalse, target);
+		}
+
+		void EmitConstantMatch (EmitContext ec)
+		{
+			var no_match = ec.DefineLabel ();
+			var end = ec.DefineLabel ();
+
 			if (expr_unwrap != null) {
 				expr_unwrap.EmitCheck (ec);
+
+				if (ProbeType.IsNull) {
+					ec.EmitInt (0);
+					ec.Emit (OpCodes.Ceq);
+					return;
+				}
+
+				ec.Emit (OpCodes.Brfalse_S, no_match);
+				expr_unwrap.Emit (ec);
+				ProbeType.Emit (ec);
+				ec.Emit (OpCodes.Ceq);
+				ec.Emit (OpCodes.Br_S, end);
+				ec.MarkLabel (no_match);
+				ec.EmitInt (0);
+				ec.MarkLabel (end);
 				return;
 			}
 
-			expr.Emit (ec);
+			if (number_args != null && number_args.Count == 3) {
+				var ce = new CallEmitter ();
+				ce.Emit (ec, number_mg, number_args, loc);
+				return;
+			}
+
+			Expr.Emit (ec);
+			ec.Emit (OpCodes.Isinst, ProbeType.Type);
+			ec.Emit (OpCodes.Dup);
+			ec.Emit (OpCodes.Brfalse, no_match);
 
-			// Only to make verifier happy
-			if (probe_type_expr.IsGenericParameter && TypeSpec.IsValueType (expr.Type))
-				ec.Emit (OpCodes.Box, expr.Type);
+			if (number_mg != null) {
+				var ce = new CallEmitter ();
+				ce.Emit (ec, number_mg, number_args, loc);
+			} else {
+				ProbeType.Emit (ec);
+				ec.Emit (OpCodes.Ceq);
+			}
+			ec.Emit (OpCodes.Br_S, end);
+			ec.MarkLabel (no_match);
 
-			ec.Emit (OpCodes.Isinst, probe_type_expr);
-			ec.EmitNull ();
-			ec.Emit (OpCodes.Cgt_Un);
+			ec.Emit (OpCodes.Pop);
+			ec.EmitInt (0);
+			ec.MarkLabel (end);
 		}
 
-		public override void EmitBranchable (EmitContext ec, Label target, bool on_true)
+		void EmitLoad (EmitContext ec)
 		{
+			Label no_value_label = new Label ();
+
 			if (expr_unwrap != null) {
 				expr_unwrap.EmitCheck (ec);
+
+				if (Variable == null)
+					return;
+
+				ec.Emit (OpCodes.Dup);
+				no_value_label = ec.DefineLabel ();
+				ec.Emit (OpCodes.Brfalse_S, no_value_label);
+				expr_unwrap.Emit (ec);
 			} else {
 				expr.Emit (ec);
+
+				// Only to make verifier happy
+				if (probe_type_expr.IsGenericParameter && TypeSpec.IsValueType (expr.Type))
+					ec.Emit (OpCodes.Box, expr.Type);
+
 				ec.Emit (OpCodes.Isinst, probe_type_expr);
-			}			
-			ec.Emit (on_true ? OpCodes.Brtrue : OpCodes.Brfalse, target);
+			}
+
+			if (Variable != null) {
+				bool value_on_stack;
+				if (probe_type_expr.IsGenericParameter || probe_type_expr.IsNullableType) {
+					ec.Emit (OpCodes.Dup);
+					ec.Emit (OpCodes.Unbox_Any, probe_type_expr);
+					value_on_stack = true;
+				} else {
+					value_on_stack = false;
+				}
+
+				Variable.CreateBuilder (ec);
+				Variable.EmitAssign (ec);
+
+				if (expr_unwrap != null) {
+					ec.MarkLabel (no_value_label);
+				} else if (!value_on_stack) {
+					Variable.Emit (ec);
+				}
+			}
 		}
 
-		Expression CreateConstantResult (ResolveContext rc, bool result)
+		protected override Expression DoResolve (ResolveContext rc)
 		{
-			if (result)
-				rc.Report.Warning (183, 1, loc, "The given expression is always of the provided (`{0}') type",
-					probe_type_expr.GetSignatureForError ());
-			else
-				rc.Report.Warning (184, 1, loc, "The given expression is never of the provided (`{0}') type",
-					probe_type_expr.GetSignatureForError ());
+			if (ResolveCommon (rc) == null)
+				return null;
 
-			var c = new BoolConstant (rc.BuiltinTypes, result, loc);
-			return expr.IsSideEffectFree ?
-				ReducedExpression.Create (c, this) :
-				new SideEffectConstant (c, this, loc);
+			type = rc.BuiltinTypes.Bool;
+			eclass = ExprClass.Value;
+
+			if (probe_type_expr == null)
+				return ResolveMatchingExpression (rc);
+
+			var res = ResolveResultExpression (rc);
+			if (Variable != null) {
+				if (res is Constant)
+					throw new NotImplementedException ("constant in type pattern matching");
+
+				Variable.Type = probe_type_expr;
+				var bc = rc as BlockContext;
+				if (bc != null)
+					Variable.PrepareAssignmentAnalysis (bc);
+			}
+
+			return res;
 		}
 
-		protected override Expression DoResolve (ResolveContext ec)
+		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
-			if (base.DoResolve (ec) == null)
-				return null;
+			base.FlowAnalysis (fc);
+
+			if (Variable != null)
+				fc.SetVariableAssigned (Variable.VariableInfo, true);
+		}
 
+		protected override void ResolveProbeType (ResolveContext rc)
+		{
+			if (!(ProbeType is TypeExpr) && rc.Module.Compiler.Settings.Version == LanguageVersion.Experimental) {
+				ProbeType = ProbeType.Resolve (rc, ResolveFlags.VariableOrValue | ResolveFlags.MethodGroup | ResolveFlags.Type);
+				if (ProbeType == null)
+					return;
+
+				if (ProbeType.eclass == ExprClass.Type) {
+					probe_type_expr = ProbeType.Type;
+				}
+
+				return;
+			}
+
+			base.ResolveProbeType (rc);
+		}
+
+		Expression ResolveMatchingExpression (ResolveContext rc)
+		{
+			var mc = ProbeType as Constant;
+			if (mc != null) {
+				if (!Convert.ImplicitConversionExists (rc, ProbeType, Expr.Type)) {
+					ProbeType.Error_ValueCannotBeConverted (rc, Expr.Type, false);
+					return null;
+				}
+
+				if (mc.IsNull)
+					return new Binary (Binary.Operator.Equality, Expr, mc).Resolve (rc);
+
+				var c = Expr as Constant;
+				if (c != null) {
+					c = ConstantFold.BinaryFold (rc, Binary.Operator.Equality, c, mc, loc);
+					if (c != null)
+						return c;
+				}
+
+				if (Expr.Type.IsNullableType) {
+					expr_unwrap = new Nullable.Unwrap (Expr);
+					expr_unwrap.Resolve (rc);
+				} else if (ProbeType.Type.IsEnum || (ProbeType.Type.BuiltinType >= BuiltinTypeSpec.Type.Byte && ProbeType.Type.BuiltinType <= BuiltinTypeSpec.Type.Decimal)) {
+					var helper = rc.Module.CreatePatterMatchingHelper ();
+					number_mg = helper.NumberMatcher.Spec;
+
+					//
+					// There are actually 3 arguments but the first one is already on the stack
+					//
+					number_args = new Arguments (3);
+					if (!ProbeType.Type.IsEnum)
+						number_args.Add (new Argument (Expr));
+
+					number_args.Add (new Argument (Convert.ImplicitConversion (rc, ProbeType, rc.BuiltinTypes.Object, loc)));
+					number_args.Add (new Argument (new BoolLiteral (rc.BuiltinTypes, ProbeType.Type.IsEnum, loc)));
+				}
+
+				return this;
+			}
+
+			throw new NotImplementedException ();
+		}
+
+		Expression ResolveResultExpression (ResolveContext ec)
+		{
 			TypeSpec d = expr.Type;
 			bool d_is_nullable = false;
 
@@ -1562,9 +1772,7 @@ namespace Mono.CSharp
 					d_is_nullable = true;
 				}
 			}
-
-			type = ec.BuiltinTypes.Bool;
-			eclass = ExprClass.Value;
+				
 			TypeSpec t = probe_type_expr;
 			bool t_is_nullable = false;
 			if (t.IsNullableType) {
@@ -1581,7 +1789,7 @@ namespace Mono.CSharp
 					// D and T are the same value types but D can be null
 					//
 					if (d_is_nullable && !t_is_nullable) {
-						expr_unwrap = Nullable.Unwrap.Create (expr, false);
+						expr_unwrap = Nullable.Unwrap.Create (expr, true);
 						return this;
 					}
 					
@@ -1695,8 +1903,7 @@ namespace Mono.CSharp
 	///   Implementation of the `as' operator.
 	/// </summary>
 	public class As : Probe {
-		Expression resolved_type;
-		
+
 		public As (Expression expr, Expression probe_type, Location l)
 			: base (expr, probe_type, l)
 		{
@@ -1727,12 +1934,8 @@ namespace Mono.CSharp
 
 		protected override Expression DoResolve (ResolveContext ec)
 		{
-			if (resolved_type == null) {
-				resolved_type = base.DoResolve (ec);
-
-				if (resolved_type == null)
-					return null;
-			}
+			if (ResolveCommon (ec) == null)
+				return null;
 
 			type = probe_type_expr;
 			eclass = ExprClass.Value;
@@ -2618,46 +2821,57 @@ namespace Mono.CSharp
 
 		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
+			//
+			// Optimized version when on-true/on-false data are not needed
+			//
 			if ((oper & Operator.LogicalMask) == 0) {
-				fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
 				left.FlowAnalysis (fc);
-				fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
 				right.FlowAnalysis (fc);
 				return;
 			}
 
-			//
-			// Optimized version when on-true/on-false data are not needed
-			//
-			bool set_on_true_false;
-			if (fc.DefiniteAssignmentOnTrue == null && fc.DefiniteAssignmentOnFalse == null) {
-				fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignment;
-				set_on_true_false = false;
-			} else {
-				set_on_true_false = true;
-			}
-
-			left.FlowAnalysis (fc);
-			var left_fc = fc.DefiniteAssignment;
+			left.FlowAnalysisConditional (fc);
 			var left_fc_ontrue = fc.DefiniteAssignmentOnTrue;
 			var left_fc_onfalse = fc.DefiniteAssignmentOnFalse;
 
 			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment = new DefiniteAssignmentBitSet (
 				oper == Operator.LogicalOr ? left_fc_onfalse : left_fc_ontrue);
-			right.FlowAnalysis (fc);
-			fc.DefiniteAssignment = left_fc;
+			right.FlowAnalysisConditional (fc);
+
+			if (oper == Operator.LogicalOr)
+				fc.DefiniteAssignment = (left_fc_onfalse | (fc.DefiniteAssignmentOnFalse & fc.DefiniteAssignmentOnTrue)) & left_fc_ontrue;
+			else
+				fc.DefiniteAssignment = (left_fc_ontrue | (fc.DefiniteAssignmentOnFalse & fc.DefiniteAssignmentOnTrue)) & left_fc_onfalse;
+		}
 
-			if (!set_on_true_false) {
-				fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignmentOnTrue = null;
+		public override void FlowAnalysisConditional (FlowAnalysisContext fc)
+		{
+			if ((oper & Operator.LogicalMask) == 0) {
+				base.FlowAnalysisConditional (fc);
 				return;
 			}
 
+			left.FlowAnalysisConditional (fc);
+			var left_fc_ontrue = fc.DefiniteAssignmentOnTrue;
+			var left_fc_onfalse = fc.DefiniteAssignmentOnFalse;
+
+			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment = new DefiniteAssignmentBitSet (
+				oper == Operator.LogicalOr ? left_fc_onfalse : left_fc_ontrue);
+			right.FlowAnalysisConditional (fc);
+
+			var lc = left as Constant;
 			if (oper == Operator.LogicalOr) {
-				fc.DefiniteAssignmentOnTrue = new DefiniteAssignmentBitSet (left_fc_ontrue);
 				fc.DefiniteAssignmentOnFalse = left_fc_onfalse | fc.DefiniteAssignmentOnFalse;
+				if (lc != null && lc.IsDefaultValue)
+					fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse;
+				else
+					fc.DefiniteAssignmentOnTrue = new DefiniteAssignmentBitSet (left_fc_ontrue & (left_fc_onfalse | fc.DefiniteAssignmentOnTrue));
 			} else {
 				fc.DefiniteAssignmentOnTrue = left_fc_ontrue | fc.DefiniteAssignmentOnTrue;
-				fc.DefiniteAssignmentOnFalse = new DefiniteAssignmentBitSet (left_fc_onfalse);
+				if (lc != null && !lc.IsDefaultValue)
+					fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignmentOnTrue;
+				else
+					fc.DefiniteAssignmentOnFalse = new DefiniteAssignmentBitSet ((left_fc_ontrue | fc.DefiniteAssignmentOnFalse) & left_fc_onfalse);
 			}
 		}
 
@@ -2966,7 +3180,7 @@ namespace Mono.CSharp
 
 						if ((oper & Operator.BitwiseMask) != 0) {
 							expr = EmptyCast.Create (expr, type);
-							AddEnumResultCast (type);
+							enum_conversion = GetEnumResultCast (type);
 
 							if (oper == Operator.BitwiseAnd && left.Type.IsEnum && right.Type.IsEnum) {
 								expr = OptimizeAndOperation (expr);
@@ -3168,11 +3382,21 @@ namespace Mono.CSharp
 		}
 		public static PredefinedOperator[] CreateStandardLiftedOperatorsTable (ModuleContainer module)
 		{
+			var types = module.Compiler.BuiltinTypes;
+
+			//
+			// Not strictly lifted but need to be in second group otherwise expressions like
+			// int + null would resolve to +(object, string) instead of +(int?, int?)
+			//
+			var string_operators = new [] {
+				new PredefinedStringOperator (types.String, types.Object, Operator.AdditionMask, types.String),
+				new PredefinedStringOperator (types.Object, types.String, Operator.AdditionMask, types.String),
+			};
+
 			var nullable = module.PredefinedTypes.Nullable.TypeSpec;
 			if (nullable == null)
-				return new PredefinedOperator [0];
+				return string_operators;
 
-			var types = module.Compiler.BuiltinTypes;
 			var bool_type = types.Bool;
 
 			var nullable_bool = nullable.MakeGenericType (module, new[] { bool_type });
@@ -3207,13 +3431,8 @@ namespace Mono.CSharp
 				new PredefinedOperator (nullable_long, nullable_int, Operator.NullableMask | Operator.ShiftMask),
 				new PredefinedOperator (nullable_ulong, nullable_int, Operator.NullableMask | Operator.ShiftMask),
 
-				//
-				// Not strictly lifted but need to be in second group otherwise expressions like
-				// int + null would resolve to +(object, string) instead of +(int?, int?)
-				//
-				new PredefinedStringOperator (types.String, types.Object, Operator.AdditionMask, types.String),
-				new PredefinedStringOperator (types.Object, types.String, Operator.AdditionMask, types.String),
-
+				string_operators [0],
+				string_operators [1]
 			};
 		}
 
@@ -3745,7 +3964,8 @@ namespace Mono.CSharp
 						return lifted.Resolve (rc);
 					}
 				} else if (rtype.IsNullableType && Nullable.NullableInfo.GetUnderlyingType (rtype).IsEnum) {
-					if (left.IsNull) {
+					Nullable.Unwrap unwrap = null;
+					if (left.IsNull || right.IsNull) {
 						if (rc.HasSet (ResolveContext.Options.ExpressionTreeConversion))
 							left = Convert.ImplicitConversion (rc, left, rtype, left.Location);
 
@@ -3755,8 +3975,12 @@ namespace Mono.CSharp
 						if ((oper & Operator.BitwiseMask) != 0)
 							return Nullable.LiftedNull.CreateFromExpression (rc, this);
 
+						if (right.IsNull)
+							return CreateLiftedValueTypeResult (rc, left.Type);
+
 						// Equality operators are valid between E? and null
 						expr = left;
+						unwrap = new Nullable.Unwrap (right);
 					} else {
 						expr = Convert.ImplicitConversion (rc, left, Nullable.NullableInfo.GetUnderlyingType (rtype), loc);
 						if (expr == null)
@@ -3767,10 +3991,12 @@ namespace Mono.CSharp
 						var lifted = new Nullable.LiftedBinaryOperator (this);
 						lifted.Left = expr;
 						lifted.Right = right;
+						lifted.UnwrapRight = unwrap;
 						return lifted.Resolve (rc);
 					}
 				} else if (ltype.IsNullableType && Nullable.NullableInfo.GetUnderlyingType (ltype).IsEnum) {
-					if (right.IsNull) {
+					Nullable.Unwrap unwrap = null;
+					if (right.IsNull || left.IsNull) {
 						if (rc.HasSet (ResolveContext.Options.ExpressionTreeConversion))
 							right = Convert.ImplicitConversion (rc, right, ltype, right.Location);
 
@@ -3780,8 +4006,12 @@ namespace Mono.CSharp
 						if ((oper & Operator.BitwiseMask) != 0)
 							return Nullable.LiftedNull.CreateFromExpression (rc, this);
 
+						if (left.IsNull)
+							return CreateLiftedValueTypeResult (rc, right.Type);
+
 						// Equality operators are valid between E? and null
 						expr = right;
+						unwrap = new Nullable.Unwrap (left);
 					} else {
 						expr = Convert.ImplicitConversion (rc, right, Nullable.NullableInfo.GetUnderlyingType (ltype), loc);
 						if (expr == null)
@@ -3791,6 +4021,7 @@ namespace Mono.CSharp
 					if (expr != null) {
 						var lifted = new Nullable.LiftedBinaryOperator (this);
 						lifted.Left = left;
+						lifted.UnwrapLeft = unwrap;
 						lifted.Right = expr;
 						return lifted.Resolve (rc);
 					}
@@ -3864,7 +4095,7 @@ namespace Mono.CSharp
 					else
 						expr = ConvertEnumAdditionalResult (expr, enum_type);
 
-					AddEnumResultCast (expr.Type);
+					enum_conversion = GetEnumResultCast (expr.Type);
 
 					return expr;
 				}
@@ -3879,7 +4110,7 @@ namespace Mono.CSharp
 				else
 					expr = ConvertEnumAdditionalResult (expr, enum_type);
 
-				AddEnumResultCast (expr.Type);
+				enum_conversion = GetEnumResultCast (expr.Type);
 			}
 
 			return expr;
@@ -3924,7 +4155,7 @@ namespace Mono.CSharp
 			return EmptyCast.Create (expr, result_type);
 		}
 
-		void AddEnumResultCast (TypeSpec type)
+		public static ConvCast.Mode GetEnumResultCast (TypeSpec type)
 		{
 			if (type.IsNullableType)
 				type = Nullable.NullableInfo.GetUnderlyingType (type);
@@ -3934,18 +4165,16 @@ namespace Mono.CSharp
 
 			switch (type.BuiltinType) {
 			case BuiltinTypeSpec.Type.SByte:
-				enum_conversion = ConvCast.Mode.I4_I1;
-				break;
+				return ConvCast.Mode.I4_I1;
 			case BuiltinTypeSpec.Type.Byte:
-				enum_conversion = ConvCast.Mode.I4_U1;
-				break;
+				return ConvCast.Mode.I4_U1;
 			case BuiltinTypeSpec.Type.Short:
-				enum_conversion = ConvCast.Mode.I4_I2;
-				break;
+				return ConvCast.Mode.I4_I2;
 			case BuiltinTypeSpec.Type.UShort:
-				enum_conversion = ConvCast.Mode.I4_U2;
-				break;
+				return ConvCast.Mode.I4_U2;
 			}
+
+			return 0;
 		}
 
 		//
@@ -4339,24 +4568,27 @@ namespace Mono.CSharp
 
 				if (left.IsNull || right.IsNull) {
 					//
+					// The lifted operator produces a null value if one or both operands are null
+					//
+					if ((oper & (Operator.ArithmeticMask | Operator.ShiftMask | Operator.BitwiseMask)) != 0) {
+						type = oper_method.ReturnType;
+						return Nullable.LiftedNull.CreateFromExpression (rc, this);
+					}
+
+					//
 					// The lifted operator produces the value false if one or both operands are null for
 					// relational operators.
 					//
-					if ((oper & Operator.ComparisonMask) != 0) {
+					if ((oper & Operator.RelationalMask) != 0) {
 						//
 						// CSC BUG: This should be different warning, csc reports CS0458 with bool? which is wrong
 						// because return type is actually bool
 						//
-						// For some reason CSC does not report this warning for equality operators
-						//
 						return CreateLiftedValueTypeResult (rc, left.IsNull ? ptypes [1] : ptypes [0]);
 					}
 
-					// The lifted operator produces a null value if one or both operands are null
-					//
-					if ((oper & (Operator.ArithmeticMask | Operator.ShiftMask | Operator.BitwiseMask)) != 0) {
-						type = oper_method.ReturnType;
-						return Nullable.LiftedNull.CreateFromExpression (rc, this);
+					if ((oper & Operator.EqualityMask) != 0 && ((left.IsNull && !right.Type.IsNullableType) || !left.Type.IsNullableType)) {
+						return CreateLiftedValueTypeResult (rc, left.IsNull ? ptypes [1] : ptypes [0]);
 					}
 				}
 
@@ -5036,7 +5268,7 @@ namespace Mono.CSharp
 			var method = res.ResolveMember<MethodSpec> (new ResolveContext (ec.MemberContext), ref arguments);
 			if (method != null) {
 				var call = new CallEmitter ();
-				call.EmitPredefined (ec, method, arguments);
+				call.EmitPredefined (ec, method, arguments, false);
 			}
 		}
 
@@ -5526,24 +5758,38 @@ namespace Mono.CSharp
 
 		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
-			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
+			expr.FlowAnalysisConditional (fc);
+			var expr_true = fc.DefiniteAssignmentOnTrue;
+			var expr_false = fc.DefiniteAssignmentOnFalse;
 
-			expr.FlowAnalysis (fc);
-			var da_true = fc.DefiniteAssignmentOnTrue;
-			var da_false = fc.DefiniteAssignmentOnFalse;
-
-			fc.DefiniteAssignment = new DefiniteAssignmentBitSet (da_true);
+			fc.DefiniteAssignment = new DefiniteAssignmentBitSet (expr_true);
 			true_expr.FlowAnalysis (fc);
 			var true_fc = fc.DefiniteAssignment;
 
-			fc.DefiniteAssignment = new DefiniteAssignmentBitSet (da_false);
+			fc.DefiniteAssignment = new DefiniteAssignmentBitSet (expr_false);
 			false_expr.FlowAnalysis (fc);
 
 			fc.DefiniteAssignment &= true_fc;
-			if (fc.DefiniteAssignmentOnTrue != null)
-				fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignment;
-			if (fc.DefiniteAssignmentOnFalse != null)
-				fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
+		}
+
+		public override void FlowAnalysisConditional (FlowAnalysisContext fc)
+		{
+			expr.FlowAnalysisConditional (fc);
+			var expr_true = fc.DefiniteAssignmentOnTrue;
+			var expr_false = fc.DefiniteAssignmentOnFalse;
+
+			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment = new DefiniteAssignmentBitSet (expr_true);
+			true_expr.FlowAnalysisConditional (fc);
+			var true_fc = fc.DefiniteAssignment;
+			var true_da_true = fc.DefiniteAssignmentOnTrue;
+			var true_da_false = fc.DefiniteAssignmentOnFalse;
+
+			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment = new DefiniteAssignmentBitSet (expr_false);
+			false_expr.FlowAnalysisConditional (fc);
+
+			fc.DefiniteAssignment &= true_fc;
+			fc.DefiniteAssignmentOnTrue = true_da_true & fc.DefiniteAssignmentOnTrue;
+			fc.DefiniteAssignmentOnFalse = true_da_false & fc.DefiniteAssignmentOnFalse;
 		}
 
 		protected override void CloneTo (CloneContext clonectx, Expression t)
@@ -6093,20 +6339,38 @@ namespace Mono.CSharp
 			fc.SetVariableAssigned (variable_info);
 		}
 	}
-	
+
 	/// <summary>
 	///   Invocation of methods or delegates.
 	/// </summary>
 	public class Invocation : ExpressionStatement
 	{
+		public class Predefined : Invocation
+		{
+			public Predefined (MethodGroupExpr expr, Arguments arguments)
+				: base (expr, arguments)
+			{
+				this.mg = expr;
+			}
+
+			protected override MethodGroupExpr DoResolveOverload (ResolveContext rc)
+			{
+				if (!rc.IsObsolete) {
+					var member = mg.BestCandidate;
+					ObsoleteAttribute oa = member.GetAttributeObsolete ();
+					if (oa != null)
+						AttributeTester.Report_ObsoleteMessage (oa, member.GetSignatureForError (), loc, rc.Report);
+				}
+
+				return mg;
+			}
+		}
+
 		protected Arguments arguments;
 		protected Expression expr;
 		protected MethodGroupExpr mg;
-
-		//
-		// arguments is an ArrayList, but we do not want to typecast,
-		// as it might be null.
-		//
+		bool conditional_access_receiver;
+		
 		public Invocation (Expression expr, Arguments arguments)
 		{
 			this.expr = expr;		
@@ -6218,14 +6482,34 @@ namespace Mono.CSharp
 			return CreateExpressionFactoryCall (ec, "Call", args);
 		}
 
-		protected override Expression DoResolve (ResolveContext ec)
+		protected override Expression DoResolve (ResolveContext rc)
+		{
+			if (!rc.HasSet (ResolveContext.Options.ConditionalAccessReceiver)) {
+				if (expr.HasConditionalAccess ()) {
+					conditional_access_receiver = true;
+					using (rc.Set (ResolveContext.Options.ConditionalAccessReceiver)) {
+						return DoResolveInvocation (rc);
+					}
+				}
+			}
+
+			return DoResolveInvocation (rc);
+		}
+
+		Expression DoResolveInvocation (ResolveContext ec)
 		{
 			Expression member_expr;
 			var atn = expr as ATypeNameExpression;
 			if (atn != null) {
 				member_expr = atn.LookupNameExpression (ec, MemberLookupRestrictions.InvocableOnly | MemberLookupRestrictions.ReadAccess);
-				if (member_expr != null)
+				if (member_expr != null) {
+					var name_of = member_expr as NameOf;
+					if (name_of != null) {
+						return name_of.ResolveOverload (ec, arguments);
+					}
+
 					member_expr = member_expr.Resolve (ec);
+				}
 			} else {
 				member_expr = expr.Resolve (ec);
 			}
@@ -6249,7 +6533,7 @@ namespace Mono.CSharp
 
 			if (mg == null) {
 				if (expr_type != null && expr_type.IsDelegate) {
-					invoke = new DelegateInvocation (member_expr, arguments, loc);
+					invoke = new DelegateInvocation (member_expr, arguments, conditional_access_receiver, loc);
 					invoke = invoke.Resolve (ec);
 					if (invoke == null || !dynamic_arg)
 						return invoke;
@@ -6283,7 +6567,9 @@ namespace Mono.CSharp
 
 			var method = mg.BestCandidate;
 			type = mg.BestCandidateReturnType;
-		
+			if (conditional_access_receiver)
+				type = LiftMemberType (ec, type);
+
 			if (arguments == null && method.DeclaringType.BuiltinType == BuiltinTypeSpec.Type.Object && method.Name == Destructor.MetadataName) {
 				if (mg.IsBase)
 					ec.Report.Error (250, loc, "Do not directly call your base class Finalize method. It is called automatically from your destructor");
@@ -6329,17 +6615,18 @@ namespace Mono.CSharp
 
 				MemberAccess ma = expr as MemberAccess;
 				if (ma != null) {
-					var left_type = ma.LeftExpression as TypeExpr;
+					var inst = mg.InstanceExpression;
+					var left_type = inst as TypeExpr;
 					if (left_type != null) {
 						args.Insert (0, new Argument (new TypeOf (left_type.Type, loc).Resolve (ec), Argument.AType.DynamicTypeName));
-					} else {
+					} else if (inst != null) {
 						//
 						// Any value type has to be pass as by-ref to get back the same
 						// instance on which the member was called
 						//
-						var mod = ma.LeftExpression is IMemoryLocation && TypeSpec.IsValueType (ma.LeftExpression.Type) ?
+						var mod = inst is IMemoryLocation && TypeSpec.IsValueType (inst.Type) ?
 							Argument.AType.Ref : Argument.AType.None;
-						args.Insert (0, new Argument (ma.LeftExpression.Resolve (ec), mod));
+						args.Insert (0, new Argument (inst.Resolve (ec), mod));
 					}
 				} else {	// is SimpleName
 					if (ec.IsStatic) {
@@ -6363,10 +6650,13 @@ namespace Mono.CSharp
 			if (mg.IsConditionallyExcluded)
 				return;
 
-			mg.FlowAnalysis (fc);
+  			mg.FlowAnalysis (fc);
 
 			if (arguments != null)
 				arguments.FlowAnalysis (fc);
+
+			if (conditional_access_receiver)
+				fc.ConditionalAccessEnd ();
 		}
 
 		public override string GetSignatureForError ()
@@ -6374,6 +6664,11 @@ namespace Mono.CSharp
 			return mg.GetSignatureForError ();
 		}
 
+		public override bool HasConditionalAccess ()
+		{
+			return expr.HasConditionalAccess ();
+		}
+
 		//
 		// If a member is a method or event, or if it is a constant, field or property of either a delegate type
 		// or the type dynamic, then the member is invocable
@@ -6412,18 +6707,21 @@ namespace Mono.CSharp
 			if (mg.IsConditionallyExcluded)
 				return;
 
-			mg.EmitCall (ec, arguments);
+			if (conditional_access_receiver)
+				mg.EmitCall (ec, arguments, type, false);
+			else
+				mg.EmitCall (ec, arguments, false);
 		}
 		
 		public override void EmitStatement (EmitContext ec)
 		{
-			Emit (ec);
+			if (mg.IsConditionallyExcluded)
+				return;
 
-			// 
-			// Pop the return value if there is one
-			//
-			if (type.Kind != MemberKind.Void)
-				ec.Emit (OpCodes.Pop);
+			if (conditional_access_receiver)
+				mg.EmitCall (ec, arguments, type, true);
+			else
+				mg.EmitCall (ec, arguments, true);
 		}
 
 		public override SLE.Expression MakeExpression (BuilderContext ctx)
@@ -7795,14 +8093,28 @@ namespace Mono.CSharp
 			: base (loc)
 		{
 			this.type = type;
-			eclass = ExprClass.Variable;
 		}
 
-		protected override Expression DoResolve (ResolveContext ec)
+		protected override Expression DoResolve (ResolveContext rc)
 		{
+			eclass = ExprClass.Variable;
+
+			var block = rc.CurrentBlock;
+			if (block != null) {
+				var top = block.ParametersBlock.TopBlock;
+				if (top.ThisVariable != null)
+					variable_info = top.ThisVariable.VariableInfo;
+
+			}
+
 			return this;
 		}
 
+		public override Expression DoResolveLValue (ResolveContext rc, Expression right_side)
+		{
+			return DoResolve (rc);
+		}
+
 		public override HoistedVariable GetHoistedVariable (AnonymousExpression ae)
 		{
 			return null;
@@ -7835,7 +8147,7 @@ namespace Mono.CSharp
 			}
 		}
 
-		VariableInfo variable_info;
+		protected VariableInfo variable_info;
 
 		public This (Location loc)
 		{
@@ -8377,7 +8689,7 @@ namespace Mono.CSharp
 				// Pointer types are allowed without explicit unsafe, they are just tokens
 				//
 				using (ec.Set (ResolveContext.Options.UnsafeScope)) {
-					typearg = QueriedType.ResolveAsType (ec);
+					typearg = QueriedType.ResolveAsType (ec, true);
 				}
 
 				if (typearg == null)
@@ -8697,27 +9009,35 @@ namespace Mono.CSharp
 			}
 		}
 
-		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext ec)
+		public FullNamedExpression CreateExpressionFromAlias (IMemberContext mc)
 		{
-			if (alias == GlobalAlias) {
-				expr = new NamespaceExpression (ec.Module.GlobalRootNamespace, loc);
-				return base.ResolveAsTypeOrNamespace (ec);
-			}
+			if (alias == GlobalAlias)
+				return new NamespaceExpression (mc.Module.GlobalRootNamespace, loc);
 
-			int errors = ec.Module.Compiler.Report.Errors;
-			expr = ec.LookupNamespaceAlias (alias);
+			int errors = mc.Module.Compiler.Report.Errors;
+			var expr = mc.LookupNamespaceAlias (alias);
 			if (expr == null) {
-				if (errors == ec.Module.Compiler.Report.Errors)
-					ec.Module.Compiler.Report.Error (432, loc, "Alias `{0}' not found", alias);
+				if (errors == mc.Module.Compiler.Report.Errors)
+					mc.Module.Compiler.Report.Error (432, loc, "Alias `{0}' not found", alias);
+
 				return null;
 			}
-			
-			return base.ResolveAsTypeOrNamespace (ec);
+
+			return expr;
 		}
 
-		protected override Expression DoResolve (ResolveContext ec)
+		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc, bool allowUnboundTypeArguments)
 		{
-			return ResolveAsTypeOrNamespace (ec);
+			expr = CreateExpressionFromAlias (mc);
+			if (expr == null)
+				return null;
+
+			return base.ResolveAsTypeOrNamespace (mc, allowUnboundTypeArguments);
+		}
+
+		protected override Expression DoResolve (ResolveContext rc)
+		{
+			return ResolveAsTypeOrNamespace (rc, false);
 		}
 
 		public override string GetSignatureForError ()
@@ -8730,6 +9050,11 @@ namespace Mono.CSharp
 			return alias + "::" + name;
 		}
 
+		public override bool HasConditionalAccess ()
+		{
+			return false;
+		}
+
 		public override Expression LookupNameExpression (ResolveContext rc, MemberLookupRestrictions restrictions)
 		{
 			if ((restrictions & MemberLookupRestrictions.InvocableOnly) != 0) {
@@ -8829,6 +9154,11 @@ namespace Mono.CSharp
 				expr.Error_OperatorCannotBeApplied (rc, loc, ".", type);
 		}
 
+		public override bool HasConditionalAccess ()
+		{
+			return LeftExpression.HasConditionalAccess ();
+		}
+
 		public static bool IsValidDotExpression (TypeSpec type)
 		{
 			const MemberKind dot_kinds = MemberKind.Class | MemberKind.Struct | MemberKind.Delegate | MemberKind.Enum |
@@ -8857,7 +9187,9 @@ namespace Mono.CSharp
 					expr = null;
 				}
 			} else {
-				expr = expr.Resolve (rc, flags);
+				using (rc.Set (ResolveContext.Options.ConditionalAccessReceiver)) {
+					expr = expr.Resolve (rc, flags);
+				}
 			}
 
 			if (expr == null)
@@ -8890,6 +9222,19 @@ namespace Mono.CSharp
 				return new DynamicMemberBinder (Name, args, loc);
 			}
 
+			var cma = this as ConditionalMemberAccess;
+			if (cma != null) {
+				if (!IsNullPropagatingValid (expr.Type)) {
+					expr.Error_OperatorCannotBeApplied (rc, loc, "?", expr.Type);
+					return null;
+				}
+
+				if (expr_type.IsNullableType) {
+					expr = Nullable.Unwrap.Create (expr, true).Resolve (rc);
+					expr_type = expr.Type;
+				}
+			}
+
 			if (!IsValidDotExpression (expr_type)) {
 				Error_OperatorCannotBeApplied (rc, expr_type);
 				return null;
@@ -8915,6 +9260,9 @@ namespace Mono.CSharp
 								emg.SetTypeArguments (rc, targs);
 							}
 
+							if (cma != null)
+								emg.ConditionalAccess = true;
+
 							// TODO: it should really skip the checks bellow
 							return emg.Resolve (rc);
 						}
@@ -8978,6 +9326,10 @@ namespace Mono.CSharp
 				sn = null;
 			}
 
+			if (cma != null) {
+				me.ConditionalAccess = true;
+			}
+
 			me = me.ResolveMemberAccess (rc, expr, sn);
 
 			if (Arity > 0) {
@@ -8990,7 +9342,7 @@ namespace Mono.CSharp
 			return me;
 		}
 
-		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext rc)
+		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext rc, bool allowUnboundTypeArguments)
 		{
 			FullNamedExpression fexpr = expr as FullNamedExpression;
 			if (fexpr == null) {
@@ -8998,7 +9350,7 @@ namespace Mono.CSharp
 				return null;
 			}
 
-			FullNamedExpression expr_resolved = fexpr.ResolveAsTypeOrNamespace (rc);
+			FullNamedExpression expr_resolved = fexpr.ResolveAsTypeOrNamespace (rc, allowUnboundTypeArguments);
 
 			if (expr_resolved == null)
 				return null;
@@ -9009,10 +9361,17 @@ namespace Mono.CSharp
 
 				if (retval == null) {
 					ns.Error_NamespaceDoesNotExist (rc, Name, Arity);
-				} else if (HasTypeArguments) {
-					retval = new GenericTypeExpr (retval.Type, targs, loc);
-					if (retval.ResolveAsType (rc) == null)
-						return null;
+				} else if (Arity > 0) {
+					if (HasTypeArguments) {
+						retval = new GenericTypeExpr (retval.Type, targs, loc);
+						if (retval.ResolveAsType (rc) == null)
+							return null;
+					} else {
+						if (!allowUnboundTypeArguments)
+							Error_OpenGenericTypeIsNotAllowed (rc);
+
+						retval = new GenericOpenTypeExpr (retval.Type, loc);
+					}
 				}
 
 				return retval;
@@ -9042,7 +9401,7 @@ namespace Mono.CSharp
 				nested = MemberCache.FindNestedType (expr_type, Name, Arity);
 				if (nested == null) {
 					if (expr_type == tnew_expr) {
-						Error_IdentifierNotFound (rc, expr_type, Name);
+						Error_IdentifierNotFound (rc, expr_type);
 						return null;
 					}
 
@@ -9070,8 +9429,13 @@ namespace Mono.CSharp
 				if (HasTypeArguments) {
 					texpr = new GenericTypeExpr (nested, targs, loc);
 				} else {
+					if (!allowUnboundTypeArguments || expr_resolved is GenericTypeExpr) // && HasTypeArguments
+						Error_OpenGenericTypeIsNotAllowed (rc);
+
 					texpr = new GenericOpenTypeExpr (nested, loc);
 				}
+			} else if (expr_resolved is GenericOpenTypeExpr) {
+				texpr = new GenericOpenTypeExpr (nested, loc);
 			} else {
 				texpr = new TypeExpression (nested, loc);
 			}
@@ -9082,7 +9446,7 @@ namespace Mono.CSharp
 			return texpr;
 		}
 
-		protected virtual void Error_IdentifierNotFound (IMemberContext rc, TypeSpec expr_type, string identifier)
+		public void Error_IdentifierNotFound (IMemberContext rc, TypeSpec expr_type)
 		{
 			var nested = MemberCache.FindNestedType (expr_type, Name, -System.Math.Max (1, Arity));
 
@@ -9147,6 +9511,19 @@ namespace Mono.CSharp
 		}
 	}
 
+	public class ConditionalMemberAccess : MemberAccess
+	{
+		public ConditionalMemberAccess (Expression expr, string identifier, TypeArguments args, Location loc)
+			: base (expr, identifier, args, loc)
+		{
+		}
+
+		public override bool HasConditionalAccess ()
+		{
+			return true;
+		}
+	}
+
 	/// <summary>
 	///   Implements checked expressions
 	/// </summary>
@@ -9312,6 +9689,8 @@ namespace Mono.CSharp
 			this.Arguments = args;
 		}
 
+		public bool ConditionalAccess { get; set; }
+
 		public override Location StartLocation {
 			get {
 				return Expr.StartLocation;
@@ -9327,10 +9706,24 @@ namespace Mono.CSharp
 		// We perform some simple tests, and then to "split" the emit and store
 		// code we create an instance of a different class, and return that.
 		//
-		Expression CreateAccessExpression (ResolveContext ec)
+		Expression CreateAccessExpression (ResolveContext ec, bool conditionalAccessReceiver)
 		{
+			Expr = Expr.Resolve (ec);
+			if (Expr == null)
+				return null;
+
+			type = Expr.Type;
+
+			if (ConditionalAccess && !IsNullPropagatingValid (type)) {
+				Error_OperatorCannotBeApplied (ec, loc, "?", type);
+				return null;
+			}
+
 			if (type.IsArray)
-				return (new ArrayAccess (this, loc));
+				return new ArrayAccess (this, loc) {
+					ConditionalAccess = ConditionalAccess,
+					ConditionalAccessReceiver = conditionalAccessReceiver
+				};
 
 			if (type.IsPointer)
 				return MakePointerAccess (ec, type);
@@ -9345,14 +9738,18 @@ namespace Mono.CSharp
 
 			var indexers = MemberCache.FindMembers (type, MemberCache.IndexerNameAlias, false);
 			if (indexers != null || type.BuiltinType == BuiltinTypeSpec.Type.Dynamic) {
-				return new IndexerExpr (indexers, type, this);
-			}
+				var indexer = new IndexerExpr (indexers, type, this) {
+					ConditionalAccess = ConditionalAccess
+				};
 
-			if (type != InternalType.ErrorType) {
-				ec.Report.Error (21, loc, "Cannot apply indexing with [] to an expression of type `{0}'",
-					type.GetSignatureForError ());
+				if (conditionalAccessReceiver)
+					indexer.SetConditionalAccessReceiver ();
+
+				return indexer;
 			}
 
+			Error_CannotApplyIndexing (ec, type, loc);
+
 			return null;
 		}
 
@@ -9364,6 +9761,19 @@ namespace Mono.CSharp
 			return CreateExpressionFactoryCall (ec, "ArrayIndex", args);
 		}
 
+		public static void Error_CannotApplyIndexing (ResolveContext rc, TypeSpec type, Location loc)
+		{
+			if (type != InternalType.ErrorType) {
+				rc.Report.Error (21, loc, "Cannot apply indexing with [] to an expression of type `{0}'",
+					type.GetSignatureForError ());
+			}
+		}
+
+		public override bool HasConditionalAccess ()
+		{
+			return ConditionalAccess || Expr.HasConditionalAccess ();
+		}
+
 		Expression MakePointerAccess (ResolveContext rc, TypeSpec type)
 		{
 			if (Arguments.Count != 1){
@@ -9385,31 +9795,31 @@ namespace Mono.CSharp
 			return new Indirection (p, loc);
 		}
 		
-		protected override Expression DoResolve (ResolveContext ec)
+		protected override Expression DoResolve (ResolveContext rc)
 		{
-			Expr = Expr.Resolve (ec);
-			if (Expr == null)
-				return null;
+			Expression expr;
+			if (!rc.HasSet (ResolveContext.Options.ConditionalAccessReceiver)) {
+				if (HasConditionalAccess ()) {
+					using (rc.Set (ResolveContext.Options.ConditionalAccessReceiver)) {
+						expr = CreateAccessExpression (rc, true);
+						if (expr == null)
+							return null;
 
-			type = Expr.Type;
+						return expr.Resolve (rc);
+					}
+				}
+			}
 
-			// TODO: Create 1 result for Resolve and ResolveLValue ?
-			var res = CreateAccessExpression (ec);
-			if (res == null)
+			expr = CreateAccessExpression (rc, false);
+			if (expr == null)
 				return null;
 
-			return res.Resolve (ec);
+			return expr.Resolve (rc);
 		}
 
 		public override Expression DoResolveLValue (ResolveContext ec, Expression rhs)
 		{
-			Expr = Expr.Resolve (ec);
-			if (Expr == null)
-				return null;
-
-			type = Expr.Type;
-
-			var res = CreateAccessExpression (ec);
+			var res = CreateAccessExpression (ec, false);
 			if (res == null)
 				return null;
 
@@ -9429,6 +9839,10 @@ namespace Mono.CSharp
 		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
 			Expr.FlowAnalysis (fc);
+
+			if (ConditionalAccess)
+				fc.BranchConditionalAccessDefiniteAssignment ();
+
 			Arguments.FlowAnalysis (fc);
 		}
 
@@ -9471,6 +9885,10 @@ namespace Mono.CSharp
 			loc = l;
 		}
 
+		public bool ConditionalAccess { get; set; }
+
+		public bool ConditionalAccessReceiver { get; set; }
+
 		public void AddressOf (EmitContext ec, AddressOp mode)
 		{
 			var ac = (ArrayContainer) ea.Expr.Type;
@@ -9489,6 +9907,9 @@ namespace Mono.CSharp
 
 		public override Expression CreateExpressionTree (ResolveContext ec)
 		{
+			if (ConditionalAccess)
+				Error_NullShortCircuitInsideExpressionTree (ec);
+
 			return ea.CreateExpressionTree (ec);
 		}
 
@@ -9499,6 +9920,9 @@ namespace Mono.CSharp
 
 		public override Expression DoResolveLValue (ResolveContext ec, Expression right_side)
 		{
+			if (ConditionalAccess)
+				throw new NotSupportedException ("null propagating operator assignment");
+
 			return DoResolve (ec);
 		}
 
@@ -9521,9 +9945,13 @@ namespace Mono.CSharp
 				UnsafeError (ec, ea.Location);
 			}
 
+			if (ConditionalAccessReceiver)
+				type = LiftMemberType (ec, type);
+
 			foreach (Argument a in ea.Arguments) {
-				if (a is NamedArgument)
-					ElementAccess.Error_NamedArgument ((NamedArgument) a, ec.Report);
+				var na = a as NamedArgument;
+				if (na != null)
+					ElementAccess.Error_NamedArgument (na, ec.Report);
 
 				a.Expr = ConvertExpressionToArrayIndex (ec, a.Expr);
 			}
@@ -9550,15 +9978,17 @@ namespace Mono.CSharp
 		{
 			if (prepareAwait) {
 				ea.Expr = ea.Expr.EmitToField (ec);
-			} else if (duplicateArguments) {
-				ea.Expr.Emit (ec);
-				ec.Emit (OpCodes.Dup);
-
-				var copy = new LocalTemporary (ea.Expr.Type);
-				copy.Store (ec);
-				ea.Expr = copy;
 			} else {
-				ea.Expr.Emit (ec);
+				var ie = new InstanceEmitter (ea.Expr, false);
+				ie.Emit (ec, ConditionalAccess);
+
+				if (duplicateArguments) {
+					ec.Emit (OpCodes.Dup);
+
+					var copy = new LocalTemporary (ea.Expr.Type);
+					copy.Store (ec);
+					ea.Expr = copy;
+				}
 			}
 
 			var dup_args = ea.Arguments.Emit (ec, duplicateArguments, prepareAwait);
@@ -9568,8 +9998,6 @@ namespace Mono.CSharp
 
 		public void Emit (EmitContext ec, bool leave_copy)
 		{
-			var ac = ea.Expr.Type as ArrayContainer;
-
 			if (prepared) {
 				ec.EmitLoadFromPtr (type);
 			} else {
@@ -9577,8 +10005,15 @@ namespace Mono.CSharp
 					LoadInstanceAndArguments (ec, false, true);
 				}
 
+				if (ConditionalAccessReceiver)
+					ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ());
+
+				var ac = (ArrayContainer) ea.Expr.Type;
 				LoadInstanceAndArguments (ec, false, false);
 				ec.EmitArrayLoad (ac);
+
+				if (ConditionalAccessReceiver)
+					ec.CloseConditionalAccess (type.IsNullableType && type != ac.Element ? type : null);
 			}	
 
 			if (leave_copy) {
@@ -9704,19 +10139,24 @@ namespace Mono.CSharp
 	//
 	// Indexer access expression
 	//
-	sealed class IndexerExpr : PropertyOrIndexerExpr<IndexerSpec>, OverloadResolver.IBaseMembersProvider
+	class IndexerExpr : PropertyOrIndexerExpr<IndexerSpec>, OverloadResolver.IBaseMembersProvider
 	{
 		IList<MemberSpec> indexers;
 		Arguments arguments;
 		TypeSpec queried_type;
 		
 		public IndexerExpr (IList<MemberSpec> indexers, TypeSpec queriedType, ElementAccess ea)
-			: base (ea.Location)
+			: this (indexers, queriedType, ea.Expr, ea.Arguments, ea.Location)
+		{
+		}
+
+		public IndexerExpr (IList<MemberSpec> indexers, TypeSpec queriedType, Expression instance, Arguments args, Location loc)
+			: base (loc)
 		{
 			this.indexers = indexers;
 			this.queried_type = queriedType;
-			this.InstanceExpression = ea.Expr;
-			this.arguments = ea.Arguments;
+			this.InstanceExpression = instance;
+			this.arguments = args;
 		}
 
 		#region Properties
@@ -9767,6 +10207,10 @@ namespace Mono.CSharp
 
 		public override Expression CreateExpressionTree (ResolveContext ec)
 		{
+			if (ConditionalAccess) {
+				Error_NullShortCircuitInsideExpressionTree (ec);
+			}
+
 			Arguments args = Arguments.CreateForExpressionTree (ec, arguments,
 				InstanceExpression.CreateExpressionTree (ec),
 				new TypeOfMethod (Getter, loc));
@@ -9843,9 +10287,11 @@ namespace Mono.CSharp
 
 		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
-			// TODO: Check the order
 			base.FlowAnalysis (fc);
 			arguments.FlowAnalysis (fc);
+
+			if (conditional_access_receiver)
+				fc.ConditionalAccessEnd ();
 		}
 
 		public override string GetSignatureForError ()
@@ -9939,6 +10385,11 @@ namespace Mono.CSharp
 				target.arguments = arguments.Clone (clonectx);
 		}
 
+		public void SetConditionalAccessReceiver ()
+		{
+			conditional_access_receiver = true;
+		}
+
 		public override void SetTypeArguments (ResolveContext ec, TypeArguments ta)
 		{
 			Error_TypeArgumentsCannotBeUsed (ec, "indexer", GetSignatureForError (), loc);
@@ -10386,7 +10837,7 @@ namespace Mono.CSharp
 			this.loc = left.Location;
 		}
 
-		public override TypeSpec ResolveAsType (IMemberContext ec)
+		public override TypeSpec ResolveAsType (IMemberContext ec, bool allowUnboundTypeArguments)
 		{
 			type = left.ResolveAsType (ec);
 			if (type == null)
@@ -10657,6 +11108,12 @@ namespace Mono.CSharp
 		{
 			this.Name = name;
 		}
+
+		public bool IsDictionaryInitializer {
+			get {
+				return Name == null;
+			}
+		}
 		
 		protected override void CloneTo (CloneContext clonectx, Expression t)
 		{
@@ -10693,70 +11150,80 @@ namespace Mono.CSharp
 			if (source == null)
 				return EmptyExpressionStatement.Instance;
 
-			var t = ec.CurrentInitializerVariable.Type;
+			if (!ResolveElement (ec))
+				return null;
+
+			if (source is CollectionOrObjectInitializers) {
+				Expression previous = ec.CurrentInitializerVariable;
+				ec.CurrentInitializerVariable = target;
+				source = source.Resolve (ec);
+				ec.CurrentInitializerVariable = previous;
+				if (source == null)
+					return null;
+					
+				eclass = source.eclass;
+				type = source.Type;
+				return this;
+			}
+
+			return base.DoResolve (ec);
+		}
+	
+		public override void EmitStatement (EmitContext ec)
+		{
+			if (source is CollectionOrObjectInitializers)
+				source.Emit (ec);
+			else
+				base.EmitStatement (ec);
+		}
+
+		protected virtual bool ResolveElement (ResolveContext rc)
+		{
+			var t = rc.CurrentInitializerVariable.Type;
 			if (t.BuiltinType == BuiltinTypeSpec.Type.Dynamic) {
 				Arguments args = new Arguments (1);
-				args.Add (new Argument (ec.CurrentInitializerVariable));
+				args.Add (new Argument (rc.CurrentInitializerVariable));
 				target = new DynamicMemberBinder (Name, args, loc);
 			} else {
 
-				var member = MemberLookup (ec, false, t, Name, 0, MemberLookupRestrictions.ExactArity, loc);
+				var member = MemberLookup (rc, false, t, Name, 0, MemberLookupRestrictions.ExactArity, loc);
 				if (member == null) {
-					member = Expression.MemberLookup (ec, true, t, Name, 0, MemberLookupRestrictions.ExactArity, loc);
+					member = Expression.MemberLookup (rc, true, t, Name, 0, MemberLookupRestrictions.ExactArity, loc);
 
 					if (member != null) {
 						// TODO: ec.Report.SymbolRelatedToPreviousError (member);
-						ErrorIsInaccesible (ec, member.GetSignatureForError (), loc);
-						return null;
+						ErrorIsInaccesible (rc, member.GetSignatureForError (), loc);
+						return false;
 					}
 				}
 
 				if (member == null) {
-					Error_TypeDoesNotContainDefinition (ec, loc, t, Name);
-					return null;
+					Error_TypeDoesNotContainDefinition (rc, loc, t, Name);
+					return false;
 				}
 
-				if (!(member is PropertyExpr || member is FieldExpr)) {
-					ec.Report.Error (1913, loc,
+				var me = member as MemberExpr;
+				if (me is EventExpr) {
+					me = me.ResolveMemberAccess (rc, null, null);
+				} else if (!(member is PropertyExpr || member is FieldExpr)) {
+					rc.Report.Error (1913, loc,
 						"Member `{0}' cannot be initialized. An object initializer may only be used for fields, or properties",
 						member.GetSignatureForError ());
 
-					return null;
+					return false;
 				}
 
-				var me = member as MemberExpr;
 				if (me.IsStatic) {
-					ec.Report.Error (1914, loc,
+					rc.Report.Error (1914, loc,
 						"Static field or property `{0}' cannot be assigned in an object initializer",
 						me.GetSignatureForError ());
 				}
 
 				target = me;
-				me.InstanceExpression = ec.CurrentInitializerVariable;
+				me.InstanceExpression = rc.CurrentInitializerVariable;
 			}
 
-			if (source is CollectionOrObjectInitializers) {
-				Expression previous = ec.CurrentInitializerVariable;
-				ec.CurrentInitializerVariable = target;
-				source = source.Resolve (ec);
-				ec.CurrentInitializerVariable = previous;
-				if (source == null)
-					return null;
-					
-				eclass = source.eclass;
-				type = source.Type;
-				return this;
-			}
-
-			return base.DoResolve (ec);
-		}
-	
-		public override void EmitStatement (EmitContext ec)
-		{
-			if (source is CollectionOrObjectInitializers)
-				source.Emit (ec);
-			else
-				base.EmitStatement (ec);
+			return true;
 		}
 	}
 	
@@ -10844,6 +11311,40 @@ namespace Mono.CSharp
 			return base.DoResolve (ec);
 		}
 	}
+
+	class DictionaryElementInitializer : ElementInitializer
+	{
+		readonly Arguments args;
+
+		public DictionaryElementInitializer (List<Expression> arguments, Expression initializer, Location loc)
+			: base (null, initializer, loc)
+		{
+			this.args = new Arguments (arguments.Count);
+			foreach (var arg in arguments)
+				this.args.Add (new Argument (arg));
+		}
+
+		public override Expression CreateExpressionTree (ResolveContext ec)
+		{
+			ec.Report.Error (8074, loc, "Expression tree cannot contain a dictionary initializer");
+			return null;
+		}
+
+		protected override bool ResolveElement (ResolveContext rc)
+		{
+			var init = rc.CurrentInitializerVariable;
+			var type = init.Type;
+
+			var indexers = MemberCache.FindMembers (type, MemberCache.IndexerNameAlias, false);
+			if (indexers == null && type.BuiltinType != BuiltinTypeSpec.Type.Dynamic) {
+				ElementAccess.Error_CannotApplyIndexing (rc, type, loc);
+				return false;
+			}
+
+			target = new IndexerExpr (indexers, type, init, args, loc).Resolve (rc);
+			return true;
+		}
+	}
 	
 	//
 	// A block of object or collection initializers
@@ -10931,8 +11432,9 @@ namespace Mono.CSharp
 				if (i == 0) {
 					if (element_initializer != null) {
 						element_names = new List<string> (initializers.Count);
-						element_names.Add (element_initializer.Name);
-					} else if (initializer is CompletingExpression){
+						if (!element_initializer.IsDictionaryInitializer)
+							element_names.Add (element_initializer.Name);
+					} else if (initializer is CompletingExpression) {
 						initializer.Resolve (ec);
 						throw new InternalErrorException ("This line should never be reached");
 					} else {
@@ -10955,7 +11457,7 @@ namespace Mono.CSharp
 						continue;
 					}
 
-					if (!is_collection_initialization) {
+					if (!is_collection_initialization && !element_initializer.IsDictionaryInitializer) {
 						if (element_names.Contains (element_initializer.Name)) {
 							ec.Report.Error (1912, element_initializer.Location,
 								"An object initializer includes more than one member `{0}' initialization",
@@ -11001,8 +11503,10 @@ namespace Mono.CSharp
 
 		public override void FlowAnalysis (FlowAnalysisContext fc)
 		{
-			foreach (var initializer in initializers)
-				initializer.FlowAnalysis (fc);
+			foreach (var initializer in initializers) {
+				if (initializer != null)
+					initializer.FlowAnalysis (fc);
+			}
 		}
 	}
 	
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/field.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/field.cs
index b7f686e0..265e4362 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/field.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/field.cs
@@ -713,7 +713,7 @@ namespace Mono.CSharp
 				loc = parameter.Location;
 			}
 
-			public override TypeSpec ResolveAsType (IMemberContext mc)
+			public override TypeSpec ResolveAsType (IMemberContext mc, bool allowUnboundTypeArguments)
 			{
 				return parameter.Type;
 			}
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/flowanalysis.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/flowanalysis.cs
index 4f54f268..dbb74a75 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/flowanalysis.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/flowanalysis.cs
@@ -139,15 +139,22 @@ namespace Mono.CSharp
 				var field = struct_info.Fields[i];
 
 				if (!fc.IsStructFieldDefinitelyAssigned (vi, field.Name)) {
-					if (field.MemberDefinition is Property.BackingField) {
+					var bf = field.MemberDefinition as Property.BackingField;
+					if (bf != null) {
+						if (bf.Initializer != null)
+							continue;
+
 						fc.Report.Error (843, loc,
 							"An automatically implemented property `{0}' must be fully assigned before control leaves the constructor. Consider calling the default struct contructor from a constructor initializer",
 							field.GetSignatureForError ());
-					} else {
-						fc.Report.Error (171, loc,
-							"Field `{0}' must be fully assigned before control leaves the constructor",
-							field.GetSignatureForError ());
+
+						ok = false;
+						continue;
 					}
+
+					fc.Report.Error (171, loc,
+						"Field `{0}' must be fully assigned before control leaves the constructor",
+						field.GetSignatureForError ());
 					ok = false;
 				}
 			}
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/generic.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/generic.cs
index 123534d9..f6d594fd 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/generic.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/generic.cs
@@ -106,7 +106,7 @@ namespace Mono.CSharp {
 			throw new NotImplementedException ();
 		}
 
-		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext ec)
+		public override FullNamedExpression ResolveAsTypeOrNamespace (IMemberContext mc, bool allowUnboundTypeArguments)
 		{
 			throw new NotImplementedException ();
 		}
@@ -626,6 +626,11 @@ namespace Mono.CSharp {
 			spec.SetMetaInfo (type);
 		}
 
+		public void Define (TypeParameter tp)
+		{
+			builder = tp.builder;
+		}
+
 		public void EmitConstraints (GenericTypeParameterBuilder builder)
 		{
 			var attr = GenericParameterAttributes.None;
@@ -1053,7 +1058,8 @@ namespace Mono.CSharp {
 					continue;
 				}
 
-				types [i] = ((TypeParameterSpec)t).GetEffectiveBase ();
+				var tps = t as TypeParameterSpec;
+				types [i] = tps != null ? tps.GetEffectiveBase () : t;
 			}
 
 			if (HasTypeConstraint)
@@ -1147,7 +1153,7 @@ namespace Mono.CSharp {
 
 					if (other.targs != null) {
 						foreach (var otarg in other.targs) {
-							if (TypeSpecComparer.Override.IsEqual (BaseType, otarg)) {
+							if (TypeSpecComparer.Override.IsEqual (iface, otarg)) {
 								found = true;
 								break;
 							}
@@ -1479,6 +1485,9 @@ namespace Mono.CSharp {
 					if (ac != null)
 						return ArrayContainer.MakeType (context.Module, et, ac.Rank);
 
+					if (ec is PointerContainer)
+						return PointerContainer.MakeType (context.Module, et);
+
 					throw new NotImplementedException ();
 				}
 
@@ -2427,7 +2436,7 @@ namespace Mono.CSharp {
 			return type.GetSignatureForError ();
 		}
 
-		public override TypeSpec ResolveAsType (IMemberContext mc)
+		public override TypeSpec ResolveAsType (IMemberContext mc, bool allowUnboundTypeArguments = false)
 		{
 			if (eclass != ExprClass.Unresolved)
 				return type;
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/import.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/import.cs
index 0d7e9e5a..6dea50a3 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/import.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/import.cs
@@ -434,6 +434,8 @@ namespace Mono.CSharp
 						else
 							mod |= Modifiers.VIRTUAL;
 					}
+				} else if (parameters.HasExtensionMethodType) {
+					mod |= Modifiers.METHOD_EXTENSION;
 				}
 			}
 
@@ -1285,6 +1287,23 @@ namespace Mono.CSharp
 			public string DefaultIndexerName;
 			public bool? CLSAttributeValue;
 			public TypeSpec CoClass;
+
+			static bool HasMissingType (ConstructorInfo ctor)
+			{
+#if STATIC
+				//
+				// Mimic odd csc behaviour where missing type on predefined
+				// attributes means the attribute is silently ignored. This can
+				// happen with PCL facades
+				//
+				foreach (var p in ctor.GetParameters ()) {
+					if (p.ParameterType.__ContainsMissingType)
+						return true;
+				}
+#endif
+
+				return false;
+			}
 			
 			public static AttributesBag Read (MemberInfo mi, MetadataImporter importer)
 			{
@@ -1359,6 +1378,9 @@ namespace Mono.CSharp
 							if (dt.Namespace != "System")
 								continue;
 
+							if (HasMissingType (a.Constructor))
+								continue;
+
 							if (bag == null)
 								bag = new AttributesBag ();
 
@@ -1377,6 +1399,9 @@ namespace Mono.CSharp
 							if (dt.Namespace != "System.Runtime.InteropServices")
 								continue;
 
+							if (HasMissingType (a.Constructor))
+								continue;
+
 							if (bag == null)
 								bag = new AttributesBag ();
 
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/iterators.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/iterators.cs
index 8b45f88a..5dce0ed1 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/iterators.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/iterators.cs
@@ -74,6 +74,9 @@ namespace Mono.CSharp
 
 		public void RegisterResumePoint ()
 		{
+			if (resume_pc != 0)
+				return;
+
 			if (inside_try_block == null) {
 				resume_pc = machine_initializer.AddResumePoint (this);
 			} else {
@@ -723,7 +726,7 @@ namespace Mono.CSharp
 		//
 		// The state as we generate the machine
 		//
-		Label move_next_ok;
+		protected Label move_next_ok;
 		protected Label move_next_error;
 		LocalBuilder skip_finally;
 		protected LocalBuilder current_pc;
@@ -827,8 +830,15 @@ namespace Mono.CSharp
 
 			BodyEnd = ec.DefineLabel ();
 
+			var async_init = this as AsyncInitializer;
+			if (async_init != null)
+				ec.BeginExceptionBlock ();
+
 			block.EmitEmbedded (ec);
 
+			if (async_init != null)
+				async_init.EmitCatchBlock (ec);
+
 			ec.MarkLabel (BodyEnd);
 
 			EmitMoveNextEpilogue (ec);
@@ -839,6 +849,8 @@ namespace Mono.CSharp
 				ec.EmitInt (0);
 				ec.Emit (OpCodes.Ret);
 			}
+
+			ec.MarkLabel (move_next_ok);
 		}
 
 		void EmitMoveNext (EmitContext ec)
@@ -895,19 +907,7 @@ namespace Mono.CSharp
 			ec.MarkLabel (BodyEnd);
 
 			if (async_init != null) {
-				var catch_value = LocalVariable.CreateCompilerGenerated (ec.Module.Compiler.BuiltinTypes.Exception, block, Location);
-
-				ec.BeginCatchBlock (catch_value.Type);
-				catch_value.EmitAssign (ec);
-
-				ec.EmitThis ();
-				ec.EmitInt ((int) IteratorStorey.State.After);
-				ec.Emit (OpCodes.Stfld, storey.PC.Spec);
-
-				((AsyncTaskStorey) async_init.Storey).EmitSetException (ec, new LocalVariableReference (catch_value, Location));
-
-				ec.Emit (OpCodes.Leave, move_next_ok);
-				ec.EndExceptionBlock ();
+				async_init.EmitCatchBlock (ec);
 			}
 
 			ec.Mark (Block.Original.EndLocation);
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/membercache.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/membercache.cs
index 82acb67b..3837af2c 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/membercache.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/membercache.cs
@@ -698,14 +698,6 @@ namespace Mono.CSharp {
 						continue;
 
 					//
-					// Ignore user private fields for definite assignment. This is sort of unexpected but
-					// rationale is to have consistent results when using reference assemblies which don't
-					// include any private fields and full assemblies
-					//
-					if ((name_entry.Modifiers & (Modifiers.PRIVATE | Modifiers.BACKING_FIELD)) == Modifiers.PRIVATE)
-						continue;
-
-					//
 					// Fixed size buffers are not subject to definite assignment checking
 					//
 					if (name_entry is FixedFieldSpec || name_entry is ConstSpec)
@@ -721,6 +713,9 @@ namespace Mono.CSharp {
 					if (!fs.IsPublic && container.MemberDefinition.IsImported && (!fs.MemberType.IsArray && TypeSpec.IsReferenceType (fs.MemberType)))
 						continue;
 
+					//if ((fs.Modifiers & (Modifiers.BACKING_FIELD) != 0)
+					//	continue;
+
 					if (fields == null)
 						fields = new List<FieldSpec> ();
 
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/method.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/method.cs
index c74e7f3f..7c42dbc8 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/method.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/method.cs
@@ -1187,7 +1187,8 @@ namespace Mono.CSharp {
 
 					// Using container location because the interface can be implemented
 					// by base class
-					container.Compiler.Report.Error (425, container.Location,
+					var tp = (tparams [i].MemberDefinition as MemberCore) ?? container;
+					container.Compiler.Report.Error (425, tp.Location,
 						"The constraints for type parameter `{0}' of method `{1}' must match the constraints for type parameter `{2}' of interface method `{3}'. Consider using an explicit interface implementation instead",
 						tparams[i].GetSignatureForError (), method.GetSignatureForError (),
 						base_tparams[i].GetSignatureForError (), baseMethod.GetSignatureForError ());
@@ -1284,7 +1285,7 @@ namespace Mono.CSharp {
 			// This is used to track the Entry Point,
 			//
 			var settings = Compiler.Settings;
-			if (settings.NeedsEntryPoint && MemberName.Name == "Main" && (settings.MainClass == null || settings.MainClass == Parent.TypeBuilder.FullName)) {
+			if (settings.NeedsEntryPoint && MemberName.Name == "Main" && !IsPartialDefinition && (settings.MainClass == null || settings.MainClass == Parent.TypeBuilder.FullName)) {
 				if (IsEntryPoint ()) {
 					if (Parent.DeclaringAssembly.EntryPoint == null) {
 						if (Parent.IsGenericOrParentIsGeneric || MemberName.IsGeneric) {
@@ -1335,6 +1336,12 @@ namespace Mono.CSharp {
 				if (IsPartialDefinition) {
 					if (partialMethodImplementation != null && CurrentTypeParameters != null) {
 						CurrentTypeParameters.CheckPartialConstraints (partialMethodImplementation);
+
+						var otp = partialMethodImplementation.CurrentTypeParameters;
+						for (int i = 0; i < CurrentTypeParameters.Count; ++i) {
+							var tp = CurrentTypeParameters [i];
+							tp.Define (otp[i]);
+						}
 					}
 
 					return;
@@ -1392,17 +1399,40 @@ namespace Mono.CSharp {
 
 			// Ensure we are always using method declaration parameters
 			for (int i = 0; i < methodDefinition.parameters.Count; ++i ) {
-				parameters [i].Name = methodDefinition.parameters [i].Name;
-				parameters [i].DefaultValue = methodDefinition.parameters [i].DefaultValue;
+				var md_p = methodDefinition.parameters [i];
+				var p = parameters [i];
+				p.Name = md_p.Name;
+				p.DefaultValue = md_p.DefaultValue;
+				if (md_p.OptAttributes != null) {
+					if (p.OptAttributes == null) {
+						p.OptAttributes = md_p.OptAttributes;
+					} else {
+						p.OptAttributes.Attrs.AddRange (md_p.OptAttributes.Attrs);
+					}
+				}
 			}
 
-			if (methodDefinition.attributes == null)
-				return;
+			if (methodDefinition.attributes != null) {
+				if (attributes == null) {
+					attributes = methodDefinition.attributes;
+				} else {
+					attributes.Attrs.AddRange (methodDefinition.attributes.Attrs);
+				}
+			}
 
-			if (attributes == null) {
-				attributes = methodDefinition.attributes;
-			} else {
-				attributes.Attrs.AddRange (methodDefinition.attributes.Attrs);
+			if (CurrentTypeParameters != null) {
+				for (int i = 0; i < CurrentTypeParameters.Count; ++i) {
+					var tp_other = methodDefinition.CurrentTypeParameters [i];
+					if (tp_other.OptAttributes == null)
+						continue;
+
+					var tp = CurrentTypeParameters [i];
+					if (tp.OptAttributes == null) {
+						tp.OptAttributes = tp_other.OptAttributes;
+					} else {
+						tp.OptAttributes.Attrs.AddRange (tp.OptAttributes.Attrs);
+					}
+				}
 			}
 		}
 	}
@@ -1506,7 +1536,7 @@ namespace Mono.CSharp {
 			
 			var call = new CallEmitter ();
 			call.InstanceExpression = new CompilerGeneratedThis (type, loc); 
-			call.EmitPredefined (ec, base_ctor, argument_list);
+			call.EmitPredefined (ec, base_ctor, argument_list, false);
 		}
 
 		public override void EmitStatement (EmitContext ec)
@@ -1591,7 +1621,6 @@ namespace Mono.CSharp {
 		}
 
 		public bool IsPrimaryConstructor { get; set; }
-
 		
 		MethodBase IMethodDefinition.Metadata {
 			get {
@@ -1680,12 +1709,12 @@ namespace Mono.CSharp {
 			if (!CheckBase ())
 				return false;
 
-			if (Parent.PrimaryConstructorParameters != null && !IsPrimaryConstructor) {
-				if (Parent.Kind == MemberKind.Struct) {
-					Report.Error (9009, Location, "`{0}': Structs with primary constructor cannot have explicit constructor",
+			if (Parent.PrimaryConstructorParameters != null && !IsPrimaryConstructor && !IsStatic) {
+				if (Parent.Kind == MemberKind.Struct && Initializer is ConstructorThisInitializer && Initializer.Arguments == null) {
+					Report.Error (8043, Location, "`{0}': Structs with primary constructor cannot specify default constructor initializer",
 						GetSignatureForError ());
 				} else if (Initializer == null || Initializer is ConstructorBaseInitializer) {
-					Report.Error (9002, Location, "`{0}': Instance constructor of type with primary constructor must specify `this' constructor initializer",
+					Report.Error (8037, Location, "`{0}': Instance constructor of type with primary constructor must specify `this' constructor initializer",
 						GetSignatureForError ());
 				}
 			}
@@ -1745,6 +1774,14 @@ namespace Mono.CSharp {
 			bc.Set (ResolveContext.Options.ConstructorScope);
 
 			if (block != null) {
+				if (!IsStatic && Initializer == null && Parent.PartialContainer.Kind == MemberKind.Struct) {
+					//
+					// If this is a non-static `struct' constructor and doesn't have any
+					// initializer, it must initialize all of the struct's fields.
+					//
+					block.AddThisVariable (bc);
+				}
+
 				//
 				// If we use a "this (...)" constructor initializer, then
 				// do not emit field initializers, they are initialized in the other constructor
@@ -1753,16 +1790,8 @@ namespace Mono.CSharp {
 					Parent.PartialContainer.ResolveFieldInitializers (bc);
 
 				if (!IsStatic) {
-					if (Initializer == null) {
-						if (Parent.PartialContainer.Kind == MemberKind.Struct) {
-							//
-							// If this is a non-static `struct' constructor and doesn't have any
-							// initializer, it must initialize all of the struct's fields.
-							//
-							block.AddThisVariable (bc);
-						} else if (Parent.PartialContainer.Kind == MemberKind.Class) {
-							Initializer = new GeneratedBaseInitializer (Location, null);
-						}
+					if (Initializer == null && Parent.PartialContainer.Kind == MemberKind.Class) {
+						Initializer = new GeneratedBaseInitializer (Location, null);
 					}
 
 					if (Initializer != null) {
@@ -2228,6 +2257,9 @@ namespace Mono.CSharp {
 		
 		protected override bool CheckBase ()
 		{
+			if ((caching_flags & Flags.MethodOverloadsExist) != 0)
+				CheckForDuplications ();
+
 			// Don't check base, destructors have special syntax
 			return true;
 		}
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/module.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/module.cs
index e7e02a0b..68f1b8ec 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/module.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/module.cs
@@ -105,6 +105,134 @@ namespace Mono.CSharp
 		}
 #endif
 
+		public sealed class PatternMatchingHelper : CompilerGeneratedContainer
+		{
+			public PatternMatchingHelper (ModuleContainer module)
+				: base (module, new MemberName ("<PatternMatchingHelper>", Location.Null),
+					Modifiers.STATIC | Modifiers.INTERNAL | Modifiers.DEBUGGER_HIDDEN)
+			{
+			}
+
+			public Method NumberMatcher { get; private set; }
+
+			protected override bool DoDefineMembers ()
+			{
+				if (!base.DoDefineMembers ())
+					return false;
+
+				NumberMatcher = GenerateNumberMatcher ();
+				return true;
+			}
+
+			Method GenerateNumberMatcher ()
+			{
+				var loc = Location;
+				var parameters = ParametersCompiled.CreateFullyResolved (
+					new [] {
+						new Parameter (new TypeExpression (Compiler.BuiltinTypes.Object, loc), "obj", 0, null, loc),
+						new Parameter (new TypeExpression (Compiler.BuiltinTypes.Object, loc), "value", 0, null, loc),
+						new Parameter (new TypeExpression (Compiler.BuiltinTypes.Bool, loc), "enumType", 0, null, loc),
+					},
+					new [] {
+						Compiler.BuiltinTypes.Object,
+						Compiler.BuiltinTypes.Object,
+						Compiler.BuiltinTypes.Bool
+					});
+
+				var m = new Method (this, new TypeExpression (Compiler.BuiltinTypes.Bool, loc),
+					Modifiers.PUBLIC | Modifiers.STATIC | Modifiers.DEBUGGER_HIDDEN, new MemberName ("NumberMatcher", loc),
+					parameters, null);
+
+				parameters [0].Resolve (m, 0);
+				parameters [1].Resolve (m, 1);
+				parameters [2].Resolve (m, 2);
+
+				ToplevelBlock top_block = new ToplevelBlock (Compiler, parameters, loc);
+				m.Block = top_block;
+
+				//
+				// if (enumType)
+				//		return Equals (obj, value);
+				//
+				var equals_args = new Arguments (2);
+				equals_args.Add (new Argument (top_block.GetParameterReference (0, loc)));
+				equals_args.Add (new Argument (top_block.GetParameterReference (1, loc)));
+
+				var if_type = new If (
+					              top_block.GetParameterReference (2, loc),
+					              new Return (new Invocation (new SimpleName ("Equals", loc), equals_args), loc),
+					              loc);
+
+				top_block.AddStatement (if_type);
+
+				//
+				// if (obj is Enum || obj == null)
+				//		return false;
+				//
+
+				var if_enum = new If (
+					              new Binary (Binary.Operator.LogicalOr,
+						              new Is (top_block.GetParameterReference (0, loc), new TypeExpression (Compiler.BuiltinTypes.Enum, loc), loc),
+						              new Binary (Binary.Operator.Equality, top_block.GetParameterReference (0, loc), new NullLiteral (loc))),
+					              new Return (new BoolLiteral (Compiler.BuiltinTypes, false, loc), loc),
+					              loc);
+
+				top_block.AddStatement (if_enum);
+
+
+				var system_convert = new MemberAccess (new QualifiedAliasMember ("global", "System", loc), "Convert", loc);
+
+				//
+				// var converted = System.Convert.ChangeType (obj, System.Convert.GetTypeCode (value));
+				//
+				var lv_converted = LocalVariable.CreateCompilerGenerated (Compiler.BuiltinTypes.Object, top_block, loc);
+
+				var arguments_gettypecode = new Arguments (1);
+				arguments_gettypecode.Add (new Argument (top_block.GetParameterReference (1, loc)));
+
+				var gettypecode = new Invocation (new MemberAccess (system_convert, "GetTypeCode", loc), arguments_gettypecode);
+
+				var arguments_changetype = new Arguments (1);
+				arguments_changetype.Add (new Argument (top_block.GetParameterReference (0, loc)));
+				arguments_changetype.Add (new Argument (gettypecode));
+
+				var changetype = new Invocation (new MemberAccess (system_convert, "ChangeType", loc), arguments_changetype);
+
+				top_block.AddStatement (new StatementExpression (new SimpleAssign (new LocalVariableReference (lv_converted, loc), changetype, loc)));
+
+
+				//
+				// return converted.Equals (value)
+				//
+				var equals_arguments = new Arguments (1);
+				equals_arguments.Add (new Argument (top_block.GetParameterReference (1, loc)));
+				var equals_invocation = new Invocation (new MemberAccess (new LocalVariableReference (lv_converted, loc), "Equals"), equals_arguments);
+				top_block.AddStatement (new Return (equals_invocation, loc));
+
+				m.Define ();
+				m.PrepareEmit ();
+				AddMember (m);
+
+				return m;
+			}
+		}
+
+		PatternMatchingHelper pmh;
+
+		public PatternMatchingHelper CreatePatterMatchingHelper ()
+		{
+			if (pmh == null) {
+				pmh = new PatternMatchingHelper (this);
+
+				pmh.CreateContainer ();
+				pmh.DefineContainer ();
+				pmh.Define ();
+				AddCompilerGeneratedClass (pmh);
+			}
+
+			return pmh;
+		}
+
 		public CharSet? DefaultCharSet;
 		public TypeAttributes DefaultCharSetType = TypeAttributes.AnsiClass;
 
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/namespace.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/namespace.cs
index 0989d1cd..f4c5aba5 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/namespace.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/namespace.cs
@@ -249,7 +249,7 @@ namespace Mono.CSharp {
 				return null;
 
 			foreach (var ts in found) {
-				if (ts.Arity == arity) {
+				if (ts.Arity == arity || mode == LookupMode.NameOf) {
 					if (best == null) {
 						if ((ts.Modifiers & Modifiers.INTERNAL) != 0 && !ts.MemberDefinition.IsInternalAsPublic (ctx.Module.DeclaringAssembly) && mode != LookupMode.IgnoreAccessibility)
 							continue;
@@ -311,6 +311,12 @@ namespace Mono.CSharp {
 			if (arity == 0 && mode == LookupMode.Normal)
 				cached_types.Add (name, best);
 
+			if (best != null) {
+				var dep = best.GetMissingDependencies ();
+				if (dep != null)
+					ImportedTypeDefinition.Error_MissingDependency (ctx, dep, loc);
+			}
+
 			return best;
 		}
 
@@ -689,6 +695,7 @@ namespace Mono.CSharp {
 		public bool DeclarationFound;
 
 		Namespace[] namespace_using_table;
+		TypeSpec[] types_using_table;
 		Dictionary<string, UsingAliasNamespace> aliases;
 		public readonly MemberName RealMemberName;
 
@@ -943,6 +950,24 @@ namespace Mono.CSharp {
 					return new ExtensionMethodCandidates (invocationContext, candidates, this, position);
 			}
 
+			// LAMESPEC: TODO no spec about priority over normal extension methods yet
+			if (types_using_table != null) {
+				foreach (var t in types_using_table) {
+
+					var res = t.MemberCache.FindExtensionMethods (invocationContext, name, arity);
+					if (res == null)
+						continue;
+
+					if (candidates == null)
+						candidates = res;
+					else
+						candidates.AddRange (res);
+				}
+
+				if (candidates != null)
+					return new ExtensionMethodCandidates (invocationContext, candidates, this, position);
+			}
+
 			return null;
 		}
 
@@ -1124,6 +1149,42 @@ namespace Mono.CSharp {
 			return match;
 		}
 
+		public static MethodGroupExpr LookupStaticUsings (IMemberContext mc, string name, int arity, Location loc)
+		{
+			for (var m = mc.CurrentMemberDefinition; m != null; m = m.Parent) {
+
+				var nc = m as NamespaceContainer;
+				if (nc == null)
+					continue;
+
+				List<MemberSpec> candidates = null;
+				if (nc.types_using_table != null) {
+					foreach (var using_type in nc.types_using_table) {
+						var members = MemberCache.FindMembers (using_type, name, true);
+						if (members != null) {
+							foreach (var member in members) {
+								if ((member.Modifiers & Modifiers.METHOD_EXTENSION) != 0)
+									continue;
+
+								if (arity > 0 && member.Arity != arity)
+									continue;
+
+								if (candidates == null)
+									candidates = new List<MemberSpec> ();
+
+								candidates.Add (member);
+							}
+						}
+					}
+				}
+
+				if (candidates != null)
+					return new MethodGroupExpr (candidates, null, loc);
+			}
+
+			return null;
+		}
+
 		protected override void DefineNamespace ()
 		{
 			if (namespace_using_table == null)
@@ -1137,7 +1198,9 @@ namespace Mono.CSharp {
 			namespace_using_table = empty_namespaces;
 
 			if (clauses != null) {
-				var list = new List<Namespace> (clauses.Count);
+				List<Namespace> namespaces = null;
+				List<TypeSpec> types = null;
+
 				bool post_process_using_aliases = false;
 
 				for (int i = 0; i < clauses.Count; ++i) {
@@ -1176,21 +1239,36 @@ namespace Mono.CSharp {
 					}
 
 					var using_ns = entry.ResolvedExpression as NamespaceExpression;
-					if (using_ns == null)
-						continue;
+					if (using_ns == null) {
 
-					if (list.Contains (using_ns.Namespace)) {
-						// Ensure we don't report the warning multiple times in repl
-						clauses.RemoveAt (i--);
+						var type = ((TypeExpr)entry.ResolvedExpression).Type;
+
+						if (types == null)
+							types = new List<TypeSpec> ();
 
-						Compiler.Report.Warning (105, 3, entry.Location,
-							"The using directive for `{0}' appeared previously in this namespace", using_ns.GetSignatureForError ());
+						if (types.Contains (type)) {
+							Warning_DuplicateEntry (entry);
+						} else {
+							types.Add (type);
+						}
 					} else {
-						list.Add (using_ns.Namespace);
+						if (namespaces == null)
+							namespaces = new List<Namespace> ();
+
+						if (namespaces.Contains (using_ns.Namespace)) {
+							// Ensure we don't report the warning multiple times in repl
+							clauses.RemoveAt (i--);
+
+							Warning_DuplicateEntry (entry);
+						} else {
+							namespaces.Add (using_ns.Namespace);
+						}
 					}
 				}
 
-				namespace_using_table = list.ToArray ();
+				namespace_using_table = namespaces == null ? new Namespace [0] : namespaces.ToArray ();
+				if (types != null)
+					types_using_table = types.ToArray ();
 
 				if (post_process_using_aliases) {
 					for (int i = 0; i < clauses.Count; ++i) {
@@ -1247,6 +1325,13 @@ namespace Mono.CSharp {
 			return false;
 		}
 
+		void Warning_DuplicateEntry (UsingNamespace entry)
+		{
+			Compiler.Report.Warning (105, 3, entry.Location,
+				"The using directive for `{0}' appeared previously in this namespace",
+				entry.ResolvedExpression.GetSignatureForError ());
+		}
+
 		public override void Accept (StructuralVisitor visitor)
 		{
 			visitor.Visit (this);
@@ -1300,15 +1385,29 @@ namespace Mono.CSharp {
 
 		public virtual void Define (NamespaceContainer ctx)
 		{
-			resolved = expr.ResolveAsTypeOrNamespace (ctx);
+			resolved = expr.ResolveAsTypeOrNamespace (ctx, false);
 			var ns = resolved as NamespaceExpression;
-			if (ns == null) {
-				if (resolved != null) {
-					ctx.Module.Compiler.Report.SymbolRelatedToPreviousError (resolved.Type);
-					ctx.Module.Compiler.Report.Error (138, Location,
-						"`{0}' is a type not a namespace. A using namespace directive can only be applied to namespaces",
-						GetSignatureForError ());
+			if (ns != null)
+				return;
+
+			if (resolved != null) {
+				var compiler = ctx.Module.Compiler;
+				var type = resolved.Type;
+				if (compiler.Settings.Version >= LanguageVersion.V_6) {
+					if (!type.IsClass || !type.IsStatic) {
+						compiler.Report.SymbolRelatedToPreviousError (type);
+						compiler.Report.Error (7007, Location,
+							"`{0}' is not a static class. A using namespace directive can only be applied to static classes or namespace",
+							GetSignatureForError ());
+					}
+
+					return;
 				}
+
+				compiler.Report.SymbolRelatedToPreviousError (type);
+				compiler.Report.Error (138, Location,
+					"`{0}' is a type not a namespace. A using namespace directive can only be applied to namespaces",
+					GetSignatureForError ());
 			}
 		}
 		
@@ -1474,7 +1573,7 @@ namespace Mono.CSharp {
 			// We achieve that by introducing alias-context which redirect any local
 			// namespace or type resolve calls to parent namespace
 			//
-			resolved = NamespaceExpression.ResolveAsTypeOrNamespace (new AliasContext (ctx));
+			resolved = NamespaceExpression.ResolveAsTypeOrNamespace (new AliasContext (ctx), false);
 		}
 		
 		public override void Accept (StructuralVisitor visitor)
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/nullable.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/nullable.cs
index 566c62af..e857e365 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/nullable.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/nullable.cs
@@ -33,7 +33,7 @@ namespace Mono.CSharp.Nullable
 			this.loc = loc;
 		}
 
-		public override TypeSpec ResolveAsType (IMemberContext ec)
+		public override TypeSpec ResolveAsType (IMemberContext ec, bool allowUnboundTypeArguments = false)
 		{
 			eclass = ExprClass.Type;
 
@@ -85,8 +85,14 @@ namespace Mono.CSharp.Nullable
 
 		public static TypeSpec GetEnumUnderlyingType (ModuleContainer module, TypeSpec nullableEnum)
 		{
+			return MakeType (module, EnumSpec.GetUnderlyingType (GetUnderlyingType (nullableEnum)));
+		}
+
+		public static TypeSpec MakeType (ModuleContainer module, TypeSpec underlyingType)
+		{
 			return module.PredefinedTypes.Nullable.TypeSpec.MakeGenericType (module,
-				new[] { EnumSpec.GetUnderlyingType (GetUnderlyingType (nullableEnum)) });
+				new[] { underlyingType });
+
 		}
 	}
 
@@ -187,6 +193,11 @@ namespace Mono.CSharp.Nullable
 			call.EmitPredefined (ec, NullableInfo.GetHasValue (expr.Type), null);
 		}
 
+		public override void EmitSideEffect (EmitContext ec)
+		{
+			expr.EmitSideEffect (ec);
+		}
+
 		public override Expression EmitToField (EmitContext ec)
 		{
 			if (temp_field == null)
@@ -424,6 +435,12 @@ namespace Mono.CSharp.Nullable
 		{
 		}
 
+		public override bool IsNull {
+			get {
+				return expr.IsNull;
+			}
+		}
+
 		public override bool ContainsEmitWithAwait ()
 		{
 			return unwrap.ContainsEmitWithAwait ();
@@ -696,7 +713,7 @@ namespace Mono.CSharp.Nullable
 			}
 
 			if (!type.IsNullableType)
-				type = rc.Module.PredefinedTypes.Nullable.TypeSpec.MakeGenericType (rc.Module, new[] { type });
+				type = NullableInfo.MakeType (rc.Module, type);
 
 			return Wrap.Create (expr, type);
 		}
@@ -1124,24 +1141,35 @@ namespace Mono.CSharp.Nullable
 				if (right.IsNull)
 					return ReducedExpression.Create (left, this);
 
-				if (Convert.ImplicitConversionExists (ec, right, unwrap.Type)) {
-					left = unwrap;
-					ltype = left.Type;
+				Expression conv;
+				if (right.Type.IsNullableType) {
+					conv = right.Type == ltype ? right : Convert.ImplicitNulableConversion (ec, right, ltype);
+					if (conv != null) {
+						right = conv;
+						type = ltype;
+						return this;
+					}
+				} else {
+					conv = Convert.ImplicitConversion (ec, right, unwrap.Type, loc);
+					if (conv != null) {
+						left = unwrap;
+						ltype = left.Type;
 
-					//
-					// If right is a dynamic expression, the result type is dynamic
-					//
-					if (right.Type.BuiltinType == BuiltinTypeSpec.Type.Dynamic) {
-						type = right.Type;
+						//
+						// If right is a dynamic expression, the result type is dynamic
+						//
+						if (right.Type.BuiltinType == BuiltinTypeSpec.Type.Dynamic) {
+							type = right.Type;
+
+							// Need to box underlying value type
+							left = Convert.ImplicitBoxingConversion (left, ltype, type);
+							return this;
+						}
 
-						// Need to box underlying value type
-						left = Convert.ImplicitBoxingConversion (left, ltype, type);
+						right = conv;
+						type = ltype;
 						return this;
 					}
-
-					right = Convert.ImplicitConversion (ec, right, ltype, loc);
-					type = ltype;
-					return this;
 				}
 			} else if (TypeSpec.IsReferenceType (ltype)) {
 				if (Convert.ImplicitConversionExists (ec, right, ltype)) {
@@ -1192,6 +1220,12 @@ namespace Mono.CSharp.Nullable
 				return ReducedExpression.Create (right, this, false).Resolve (ec);
 
 			left = Convert.ImplicitConversion (ec, unwrap ?? left, rtype, loc);
+
+			if (TypeSpec.IsValueType (left.Type) && !left.Type.IsNullableType) {
+				Warning_UnreachableExpression (ec, right.Location);
+				return ReducedExpression.Create (left, this, false).Resolve (ec);
+			}
+
 			type = rtype;
 			return this;
 		}
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/parameter.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/parameter.cs
index f1215173..1a30ae38 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/parameter.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/parameter.cs
@@ -222,8 +222,7 @@ namespace Mono.CSharp {
 			CallerMask = CallerMemberName | CallerLineNumber | CallerFilePath
 		}
 
-		static readonly string[] attribute_targets = new string[] { "param" };
-		static readonly string[] attribute_targets_primary = new string[] { "param", "field" };
+		static readonly string[] attribute_targets = new [] { "param" };
 
 		FullNamedExpression texpr;
 		Modifier modFlags;
@@ -234,7 +233,6 @@ namespace Mono.CSharp {
 		protected int idx;
 		public bool HasAddressTaken;
 
-		Constructor primary_constructor;
 		TemporaryVariableReference expr_tree_variable;
 
 		HoistedParameter hoisted_variant;
@@ -309,7 +307,7 @@ namespace Mono.CSharp {
 
 		public override string[] ValidAttributeTargets {
 			get {
-				return primary_constructor != null ? attribute_targets_primary : attribute_targets;
+				return attribute_targets;
 			}
 		}
 
@@ -317,12 +315,6 @@ namespace Mono.CSharp {
 
 		public override void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
 		{
-			if (a.Target == AttributeTargets.Field) {
-				var field = MemberCache.FindMember (primary_constructor.Spec.DeclaringType, MemberFilter.Field (name, parameter_type), BindingRestriction.DeclaredOnly);
-				((Field)field.MemberDefinition).ApplyAttributeBuilder (a, ctor, cdata, pa);
-				return;
-			}
-
 			if (a.Type == pa.In && ModFlags == Modifier.OUT) {
 				a.Report.Error (36, a.Location, "An out parameter cannot have the `In' attribute");
 				return;
@@ -399,10 +391,6 @@ namespace Mono.CSharp {
 			if (attributes != null)
 				attributes.AttachTo (this, rc);
 
-			var ctor = rc.CurrentMemberDefinition as Constructor;
-			if (ctor != null && ctor.IsPrimaryConstructor)
-				primary_constructor = ctor;
-
 			parameter_type = texpr.ResolveAsType (rc);
 			if (parameter_type == null)
 				return null;
@@ -465,7 +453,7 @@ namespace Mono.CSharp {
 
 				if (atype == pa.CallerLineNumberAttribute) {
 					caller_type = rc.BuiltinTypes.Int;
-					if (caller_type != parameter_type && !Convert.ImplicitNumericConversionExists (caller_type, parameter_type)) {
+					if (caller_type != parameter_type && !Convert.ImplicitStandardConversionExists (new IntConstant (caller_type, int.MaxValue, Location.Null), parameter_type)) {
 						rc.Report.Error (4017, attr.Location,
 							"The CallerLineNumberAttribute attribute cannot be applied because there is no standard conversion from `{0}' to `{1}'",
 							caller_type.GetSignatureForError (), parameter_type.GetSignatureForError ());
@@ -789,6 +777,11 @@ namespace Mono.CSharp {
 			return new TypeExpression (p_type, location);
 		}
 
+		public void SetIndex (int index)
+		{
+			idx = index;
+		}
+
 		public void Warning_UselessOptionalParameter (Report Report)
 		{
 			Report.Warning (1066, 1, Location,
@@ -1151,6 +1144,23 @@ namespace Mono.CSharp {
 			return new ParametersCompiled (parameters, types);
 		}
 
+		public static ParametersCompiled Prefix (ParametersCompiled parameters, Parameter p, TypeSpec type)
+		{
+			var ptypes = new TypeSpec [parameters.Count + 1];
+			ptypes [0] = type;
+			Array.Copy (parameters.Types, 0, ptypes, 1, parameters.Count);
+
+			var param = new Parameter [ptypes.Length];
+			param [0] = p;
+			for (int i = 0; i < parameters.Count; ++i) {
+				var pi = parameters [i];
+				param [i + 1] = pi;
+				pi.SetIndex (i + 1);
+			}
+
+			return ParametersCompiled.CreateFullyResolved (param, ptypes);
+		}
+
 		//
 		// TODO: This does not fit here, it should go to different version of AParametersCollection
 		// as the underlying type is not Parameter and some methods will fail to cast
@@ -1409,9 +1419,11 @@ namespace Mono.CSharp {
 			expr = Child;
 
 			if (!(expr is Constant || expr is DefaultValueExpression || (expr is New && ((New) expr).IsDefaultStruct))) {
-				rc.Report.Error (1736, Location,
-					"The expression being assigned to optional parameter `{0}' must be a constant or default value",
-					p.Name);
+				if (!(expr is ErrorExpression)) {
+					rc.Report.Error (1736, Location,
+						"The expression being assigned to optional parameter `{0}' must be a constant or default value",
+						p.Name);
+				}
 
 				return;
 			}
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/property.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/property.cs
index b27566e0..979a8e83 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/property.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/property.cs
@@ -731,13 +731,15 @@ namespace Mono.CSharp
 		public sealed class BackingField : Field
 		{
 			readonly Property property;
+			const Modifiers DefaultModifiers = Modifiers.BACKING_FIELD | Modifiers.COMPILER_GENERATED | Modifiers.PRIVATE | Modifiers.DEBUGGER_HIDDEN;
 
-			public BackingField (Property p)
-				: base (p.Parent, p.type_expr,
-				Modifiers.BACKING_FIELD | Modifiers.COMPILER_GENERATED | Modifiers.PRIVATE | (p.ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE)),
+			public BackingField (Property p, bool readOnly)
+				: base (p.Parent, p.type_expr, DefaultModifiers | (p.ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE)),
 				new MemberName ("<" + p.GetFullName (p.MemberName) + ">k__BackingField", p.Location), null)
 			{
 				this.property = p;
+				if (readOnly)
+					ModFlags |= Modifiers.READONLY;
 			}
 
 			public Property OriginalProperty {
@@ -766,6 +768,8 @@ namespace Mono.CSharp
 		{
 		}
 
+		public Expression Initializer { get; set; }
+
 		public override void Accept (StructuralVisitor visitor)
 		{
 			visitor.Visit (this);
@@ -784,10 +788,16 @@ namespace Mono.CSharp
 		void CreateAutomaticProperty ()
 		{
 			// Create backing field
-			backing_field = new BackingField (this);
+			backing_field = new BackingField (this, Initializer != null && Set == null);
 			if (!backing_field.Define ())
 				return;
 
+			if (Initializer != null) {
+				backing_field.Initializer = Initializer;
+				Parent.RegisterFieldForInitialization (backing_field, new FieldInitializer (backing_field, Initializer, Location));
+				backing_field.ModFlags |= Modifiers.READONLY;
+			}
+
 			Parent.PartialContainer.Members.Add (backing_field);
 
 			FieldExpr fe = new FieldExpr (backing_field, Location);
@@ -802,11 +812,15 @@ namespace Mono.CSharp
 			Get.Block = new ToplevelBlock (Compiler, ParametersCompiled.EmptyReadOnlyParameters, Location.Null);
 			Return r = new Return (fe, Get.Location);
 			Get.Block.AddStatement (r);
+			Get.ModFlags |= Modifiers.COMPILER_GENERATED;
 
 			// Create set block
-			Set.Block = new ToplevelBlock (Compiler, Set.ParameterInfo, Location.Null);
-			Assign a = new SimpleAssign (fe, new SimpleName ("value", Location.Null), Location.Null);
-			Set.Block.AddStatement (new StatementExpression (a, Set.Location));
+			if (Set != null) {
+				Set.Block = new ToplevelBlock (Compiler, Set.ParameterInfo, Location.Null);
+				Assign a = new SimpleAssign (fe, new SimpleName ("value", Location.Null), Location.Null);
+				Set.Block.AddStatement (new StatementExpression (a, Set.Location));
+				Set.ModFlags |= Modifiers.COMPILER_GENERATED;
+			}
 		}
 		
 		public override bool Define ()
@@ -816,13 +830,37 @@ namespace Mono.CSharp
 
 			flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
 
-			if (!IsInterface && (ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0 &&
-				AccessorSecond != null && Get.Block == null && Set.Block == null) {
-				if (Compiler.Settings.Version <= LanguageVersion.ISO_2)
-					Report.FeatureIsNotAvailable (Compiler, Location, "automatically implemented properties");
+			bool auto = AccessorFirst.Block == null && (AccessorSecond == null || AccessorSecond.Block == null) &&
+				(ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0;
+
+			if (Initializer != null) {
+				if (!auto)
+					Report.Error (8050, Location, "`{0}': Only auto-implemented properties can have initializers",
+						GetSignatureForError ());
+
+				if (IsInterface)
+					Report.Error (8053, Location, "`{0}': Properties inside interfaces cannot have initializers",
+						GetSignatureForError ());
+
+				if (Compiler.Settings.Version < LanguageVersion.V_6)
+					Report.FeatureIsNotAvailable (Compiler, Location, "auto-implemented property initializer");
+			}
+
+			if (auto) {
+				if (Get == null) {
+					Report.Error (8052, Location, "Auto-implemented property `{0}' must have get accessor",
+						GetSignatureForError ());
+					return false;
+				}
+
+				if (Initializer == null && AccessorSecond == null) {
+					Report.Error (8051, Location, "Auto-implemented property `{0}' must have set accessor or initializer",
+						GetSignatureForError ());
+				}
+
+				if (Compiler.Settings.Version < LanguageVersion.V_3 && Initializer == null)
+					Report.FeatureIsNotAvailable (Compiler, Location, "auto-implemented properties");
 
-				Get.ModFlags |= Modifiers.COMPILER_GENERATED;
-				Set.ModFlags |= Modifiers.COMPILER_GENERATED;
 				CreateAutomaticProperty ();
 			}
 
@@ -1002,13 +1040,22 @@ namespace Mono.CSharp
 					Location)));
 				args.Add (new Argument (new LocalVariableReference (obj1, Location)));
 
-				var cas = Module.PredefinedMembers.InterlockedCompareExchange_T.Resolve (Location);
-				if (cas == null)
-					return;
-
-				body.AddStatement (new StatementExpression (new SimpleAssign (
-					new LocalVariableReference (obj1, Location),
-					new Invocation (MethodGroupExpr.CreatePredefined (cas, cas.DeclaringType, Location), args))));
+				var cas = Module.PredefinedMembers.InterlockedCompareExchange_T.Get ();
+				if (cas == null) {
+					if (Module.PredefinedMembers.MonitorEnter_v4.Get () != null || Module.PredefinedMembers.MonitorEnter.Get () != null) {
+						// Workaround for cripled (e.g. microframework) mscorlib without CompareExchange
+						body.AddStatement (new Lock (
+							block.GetParameterReference (0, Location),
+							new StatementExpression (new SimpleAssign (
+								f_expr, args [1].Expr, Location), Location), Location));
+					} else {
+						Module.PredefinedMembers.InterlockedCompareExchange_T.Resolve (Location);
+					}
+				} else {
+					body.AddStatement (new StatementExpression (new SimpleAssign (
+						new LocalVariableReference (obj1, Location),
+						new Invocation (MethodGroupExpr.CreatePredefined (cas, cas.DeclaringType, Location), args))));
+				}
 			}
 		}
 
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/report.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/report.cs
index 5ae47d8a..e9b16d1c 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/report.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/report.cs
@@ -103,6 +103,9 @@ namespace Mono.CSharp {
 			case LanguageVersion.V_5:
 				version = "5.0";
 				break;
+			case LanguageVersion.V_6:
+				version = "6.0";
+				break;
 			default:
 				throw new InternalErrorException ("Invalid feature version", compiler.Settings.Version);
 			}
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/settings.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/settings.cs
index 3c7f13bd..9ba66c16 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/settings.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/settings.cs
@@ -29,9 +29,9 @@ namespace Mono.CSharp {
 		V_4 = 4,
 		V_5 = 5,
 		V_6 = 6,
-		Future = 100,
+		Experimental = 100,
 
-		Default = LanguageVersion.Future,
+		Default = LanguageVersion.V_6,
 	}
 
 	public enum RuntimeVersion
@@ -1159,9 +1159,12 @@ namespace Mono.CSharp {
 				case "6":
 					settings.Version = LanguageVersion.V_6;
 					return ParseResult.Success;
-				case "future":
-					settings.Version = LanguageVersion.Future;
+				case "experimental":
+					settings.Version = LanguageVersion.Experimental;
 					return ParseResult.Success;
+				case "future":
+					report.Warning (8000, 1, "Language version `future' is no longer supported");
+					goto case "6";
 				}
 
 				report.Error (1617, "Invalid -langversion option `{0}'. It must be `ISO-1', `ISO-2', Default or value in range 1 to 6", value);
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/statement.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/statement.cs
index e7a360db..18249431 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/statement.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/statement.cs
@@ -90,7 +90,6 @@ namespace Mono.CSharp {
 			if (reachable) {
 				fc.UnreachableReported = false;
 				var res = DoFlowAnalysis (fc);
-				fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = null;
 				return res;
 			}
 
@@ -266,18 +265,19 @@ namespace Mono.CSharp {
 
 		protected override bool DoFlowAnalysis (FlowAnalysisContext fc)
 		{
-			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
-
-			expr.FlowAnalysis (fc);
+			expr.FlowAnalysisConditional (fc);
 
 			var da_false = new DefiniteAssignmentBitSet (fc.DefiniteAssignmentOnFalse);
 
 			fc.DefiniteAssignment = fc.DefiniteAssignmentOnTrue;
-			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = null;
 
 			var res = TrueStatement.FlowAnalysis (fc);
 
 			if (FalseStatement == null) {
+				var c = expr as Constant;
+				if (c != null && !c.IsDefaultValue)
+					return true_returns;
+
 				if (true_returns)
 					fc.DefiniteAssignment = da_false;
 				else
@@ -419,8 +419,7 @@ namespace Mono.CSharp {
 		{
 			var res = Statement.FlowAnalysis (fc);
 
-			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
-			expr.FlowAnalysis (fc);
+			expr.FlowAnalysisConditional (fc);
 
 			fc.DefiniteAssignment = fc.DefiniteAssignmentOnFalse;
 
@@ -565,13 +564,10 @@ namespace Mono.CSharp {
 
 		protected override bool DoFlowAnalysis (FlowAnalysisContext fc)
 		{
-			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
-	
-			expr.FlowAnalysis (fc);
+			expr.FlowAnalysisConditional (fc);
 
 			fc.DefiniteAssignment = fc.DefiniteAssignmentOnTrue;
 			var da_false = new DefiniteAssignmentBitSet (fc.DefiniteAssignmentOnFalse);
-			fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = null;
 
 			Statement.FlowAnalysis (fc);
 
@@ -697,12 +693,9 @@ namespace Mono.CSharp {
 
 			DefiniteAssignmentBitSet da_false;
 			if (Condition != null) {
-				fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = fc.DefiniteAssignment;
-
-				Condition.FlowAnalysis (fc);
+				Condition.FlowAnalysisConditional (fc);
 				fc.DefiniteAssignment = fc.DefiniteAssignmentOnTrue;
 				da_false = new DefiniteAssignmentBitSet (fc.DefiniteAssignmentOnFalse);
-				fc.DefiniteAssignmentOnTrue = fc.DefiniteAssignmentOnFalse = null;
 			} else {
 				da_false = fc.BranchDefiniteAssignment ();
 			}
@@ -3669,6 +3662,9 @@ namespace Mono.CSharp {
 			get {
 				return top_block;
 			}
+			set {
+				top_block = value;
+			}
 		}
 
 		public bool Resolved {
@@ -4308,6 +4304,24 @@ namespace Mono.CSharp {
 			return false;
 		}
 
+		public void IncludeBlock (ParametersBlock pb, ToplevelBlock block)
+		{
+			if (block.names != null) {
+				foreach (var n in block.names) {
+					var variable = n.Value as INamedBlockVariable;
+					if (variable != null) {
+						if (variable.Block.ParametersBlock == pb)
+							AddLocalName (n.Key, variable, false);
+						continue;
+					}
+
+					foreach (var v in (List<INamedBlockVariable>) n.Value)
+						if (v.Block.ParametersBlock == pb)
+							AddLocalName (n.Key, v, false);
+				}
+			}
+		}
+
 		// <summary>
 		//   This is used by non-static `struct' constructors which do not have an
 		//   initializer - in this case, the constructor must initialize all of the
@@ -4621,7 +4635,7 @@ namespace Mono.CSharp {
 
 		class MissingBreak : Statement
 		{
-			SwitchLabel label;
+			readonly SwitchLabel label;
 
 			public MissingBreak (SwitchLabel sl)
 			{
@@ -4629,6 +4643,8 @@ namespace Mono.CSharp {
 				this.loc = sl.loc;
 			}
 
+			public bool FallOut { get; set; }
+
 			protected override void DoEmit (EmitContext ec)
 			{
 			}
@@ -4639,9 +4655,13 @@ namespace Mono.CSharp {
 
 			protected override bool DoFlowAnalysis (FlowAnalysisContext fc)
 			{
-				fc.Report.Error (163, loc, "Control cannot fall through from one case label `{0}' to another",
-					label.GetSignatureForError ());
-
+				if (FallOut) {
+					fc.Report.Error (8070, loc, "Control cannot fall out of switch statement through final case label `{0}'",
+						label.GetSignatureForError ());
+				} else {
+					fc.Report.Error (163, loc, "Control cannot fall through from one case label `{0}' to another",
+						label.GetSignatureForError ());
+				}
 				return true;
 			}
 		}
@@ -4719,7 +4739,7 @@ namespace Mono.CSharp {
 		// expression might be the expression from the switch, or an
 		// expression that includes any potential conversions to
 		//
-		Expression SwitchGoverningType (ResolveContext ec, Expression expr)
+		static Expression SwitchGoverningType (ResolveContext rc, Expression expr, bool unwrapExpr)
 		{
 			switch (expr.Type.BuiltinType) {
 			case BuiltinTypeSpec.Type.Byte:
@@ -4746,10 +4766,18 @@ namespace Mono.CSharp {
 			// conversions, we have to report an error
 			//
 			Expression converted = null;
-			foreach (TypeSpec tt in ec.BuiltinTypes.SwitchUserTypes) {
-				Expression e;
-				
-				e = Convert.ImplicitUserConversion (ec, expr, tt, loc);
+			foreach (TypeSpec tt in rc.Module.PredefinedTypes.SwitchUserTypes) {
+
+				if (!unwrapExpr && tt.IsNullableType && expr.Type.IsNullableType)
+					break;
+
+				var restr = Convert.UserConversionRestriction.ImplicitOnly |
+					Convert.UserConversionRestriction.ProbingOnly;
+
+				if (unwrapExpr)
+					restr |= Convert.UserConversionRestriction.NullableSourceOnly;
+
+				var e = Convert.UserDefinedConversion (rc, expr, tt, restr, Location.Null);
 				if (e == null)
 					continue;
 
@@ -4757,11 +4785,12 @@ namespace Mono.CSharp {
 				// Ignore over-worked ImplicitUserConversions that do
 				// an implicit conversion in addition to the user conversion.
 				// 
-				if (!(e is UserCast))
+				var uc = e as UserCast;
+				if (uc == null)
 					continue;
 
 				if (converted != null){
-					ec.Report.ExtraInformation (loc, "(Ambiguous implicit user defined conversion in previous ");
+//					rc.Report.ExtraInformation (loc, "(Ambiguous implicit user defined conversion in previous ");
 					return null;
 				}
 
@@ -4770,10 +4799,12 @@ namespace Mono.CSharp {
 			return converted;
 		}
 
-		public static TypeSpec[] CreateSwitchUserTypes (BuiltinTypes types)
+		public static TypeSpec[] CreateSwitchUserTypes (ModuleContainer module, TypeSpec nullable)
 		{
+			var types = module.Compiler.BuiltinTypes;
+
 			// LAMESPEC: For some reason it does not contain bool which looks like csc bug
-			return new[] {
+			TypeSpec[] stypes = new[] {
 				types.SByte,
 				types.Byte,
 				types.Short,
@@ -4785,6 +4816,17 @@ namespace Mono.CSharp {
 				types.Char,
 				types.String
 			};
+
+			if (nullable != null) {
+
+				Array.Resize (ref stypes, stypes.Length + 9);
+
+				for (int i = 0; i < 9; ++i) {
+					stypes [10 + i] = nullable.MakeGenericType (module, new [] { stypes [i] });
+				}
+			}
+
+			return stypes;
 		}
 
 		public void RegisterLabel (BlockContext rc, SwitchLabel sl)
@@ -5005,14 +5047,23 @@ namespace Mono.CSharp {
 			if (Expr == null)
 				return false;
 
-			new_expr = SwitchGoverningType (ec, Expr);
+			//
+			// LAMESPEC: User conversion from non-nullable governing type has a priority
+			//
+			new_expr = SwitchGoverningType (ec, Expr, false);
 
-			if (new_expr == null && Expr.Type.IsNullableType) {
-				unwrap = Nullable.Unwrap.Create (Expr, false);
-				if (unwrap == null)
-					return false;
+			if (new_expr == null) {
+				if (Expr.Type.IsNullableType) {
+					unwrap = Nullable.Unwrap.Create (Expr, false);
+					if (unwrap == null)
+						return false;
 
-				new_expr = SwitchGoverningType (ec, unwrap);
+					//
+					// Unwrap + user conversion using non-nullable type is not allowed but user operator
+					// involving nullable Expr and nullable governing type is
+					//
+					new_expr = SwitchGoverningType (ec, unwrap, true);
+				}
 			}
 
 			if (new_expr == null) {
@@ -5025,8 +5076,11 @@ namespace Mono.CSharp {
 				return false;
 			}
 
-			// Validate switch.
 			SwitchType = new_expr.Type;
+			if (SwitchType.IsNullableType) {
+				new_expr = unwrap = Nullable.Unwrap.Create (new_expr, true);
+				SwitchType = Nullable.NullableInfo.GetUnderlyingType (SwitchType);
+			}
 
 			if (SwitchType.BuiltinType == BuiltinTypeSpec.Type.Bool && ec.Module.Compiler.Settings.Version == LanguageVersion.ISO_1) {
 				ec.Report.FeatureIsNotAvailable (ec.Module.Compiler, loc, "switch expression of boolean type");
@@ -5160,14 +5214,16 @@ namespace Mono.CSharp {
 
 				if (sl != null && sl.SectionStart) {
 					//
-					// Section is marked already via constant switch or goto case
+					// Section is marked already via goto case
 					//
 					if (!sl.IsUnreachable) {
 						section_rc = new Reachability ();
 						continue;
 					}
 
-					if (section_rc.IsUnreachable) {
+					if (constant_label != null && constant_label != sl)
+						section_rc = Reachability.CreateUnreachable ();
+					else if (section_rc.IsUnreachable) {
 						section_rc = new Reachability ();
 					} else {
 						if (prev_label != null) {
@@ -5180,9 +5236,6 @@ namespace Mono.CSharp {
 					}
 
 					prev_label = sl;
-
-					if (constant_label != null && constant_label != sl)
-						section_rc = Reachability.CreateUnreachable ();
 				}
 
 				section_rc = s.MarkReachable (section_rc);
@@ -5190,7 +5243,10 @@ namespace Mono.CSharp {
 
 			if (!section_rc.IsUnreachable && prev_label != null) {
 				prev_label.SectionStart = false;
-				var s = new MissingBreak (prev_label);
+				var s = new MissingBreak (prev_label) {
+					FallOut = true
+				};
+
 				s.MarkReachable (rc);
 				block.Statements.Add (s);
 			}
@@ -5442,6 +5498,8 @@ namespace Mono.CSharp {
 				//
 				ec.Mark (block.StartLocation);
 				block.IsCompilerGenerated = true;
+			} else {
+				new_expr.EmitSideEffect (ec);
 			}
 
 			block.Emit (ec);
@@ -5471,7 +5529,7 @@ namespace Mono.CSharp {
 
 		public override void AddEndDefiniteAssignment (FlowAnalysisContext fc)
 		{
-			if (case_default == null)
+			if (case_default == null && !(new_expr is Constant))
 				return;
 
 			if (end_reachable_das == null)
@@ -5574,7 +5632,7 @@ namespace Mono.CSharp {
 
 				var ce = new CallEmitter ();
 				ce.InstanceExpression = new CompilerGeneratedThis (ec.CurrentType, loc);
-				ce.EmitPredefined (ec, finally_host.Spec, new Arguments (0));
+				ce.EmitPredefined (ec, finally_host.Spec, new Arguments (0), true);
 			} else {
 				EmitFinallyBody (ec);
 			}
@@ -5639,7 +5697,7 @@ namespace Mono.CSharp {
 			if (finally_host != null) {
 				var ce = new CallEmitter ();
 				ce.InstanceExpression = new CompilerGeneratedThis (ec.CurrentType, loc);
-				ce.EmitPredefined (ec, finally_host.Spec, new Arguments (0));
+				ce.EmitPredefined (ec, finally_host.Spec, new Arguments (0), true);
 			} else {
 				EmitFinallyBody (ec);
 			}
@@ -5781,6 +5839,12 @@ namespace Mono.CSharp {
 			}
 		}
 
+		protected override bool DoFlowAnalysis (FlowAnalysisContext fc)
+		{
+			expr.FlowAnalysis (fc);
+			return base.DoFlowAnalysis (fc);
+		}
+
 		public override bool Resolve (BlockContext ec)
 		{
 			expr = expr.Resolve (ec);
@@ -6384,6 +6448,9 @@ namespace Mono.CSharp {
 						ctch.hoisted_temp.Emit (ec);
 					else
 						ctch.li.Emit (ec);
+
+					if (!ctch.IsGeneral && ctch.type.Kind == MemberKind.TypeParameter)
+						ec.Emit (OpCodes.Box, ctch.type);
 				}
 
 				var expr_start = ec.DefineLabel ();
@@ -7651,13 +7718,13 @@ namespace Mono.CSharp {
 				if (mg != null) {
 					mg.InstanceExpression = expr;
 					Arguments args = new Arguments (0);
-					mg = mg.OverloadResolve (rc, ref args, this, OverloadResolver.Restrictions.ProbingOnly);
+					mg = mg.OverloadResolve (rc, ref args, this, OverloadResolver.Restrictions.ProbingOnly | OverloadResolver.Restrictions.GetEnumeratorLookup);
 
 					// For ambiguous GetEnumerator name warning CS0278 was reported, but Option 2 could still apply
 					if (ambiguous_getenumerator_name)
 						mg = null;
 
-					if (mg != null && args.Count == 0 && !mg.BestCandidate.IsStatic && mg.BestCandidate.IsPublic) {
+					if (mg != null && !mg.BestCandidate.IsStatic && mg.BestCandidate.IsPublic) {
 						return mg;
 					}
 				}
@@ -7814,7 +7881,7 @@ namespace Mono.CSharp {
 
 				for_each.body.AddScopeStatement (new StatementExpression (new CompilerAssign (variable_ref, current_pe, Location.Null), for_each.type.Location));
 
-				var init = new Invocation (get_enumerator_mg, null);
+				var init = new Invocation.Predefined (get_enumerator_mg, null);
 
 				statement = new While (new BooleanExpression (new Invocation (move_next_mg, null)),
 					 for_each.body, Location.Null);
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/typemanager.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/typemanager.cs
index 870b7be2..6e785dfc 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/typemanager.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/typemanager.cs
@@ -73,7 +73,6 @@ namespace Mono.CSharp
 		public readonly TypeSpec[] OperatorsUnaryMutator;
 
 		public readonly TypeSpec[] BinaryPromotionsTypes;
-		public readonly TypeSpec[] SwitchUserTypes;
 
 		readonly BuiltinTypeSpec[] types;
 
@@ -125,7 +124,6 @@ namespace Mono.CSharp
 			OperatorsUnaryMutator = UnaryMutator.CreatePredefinedOperatorsTable (this);
 
 			BinaryPromotionsTypes = ConstantFold.CreateBinaryPromotionsTypes (this);
-			SwitchUserTypes = Switch.CreateSwitchUserTypes (this);
 
 			types = new BuiltinTypeSpec[] {
 				Object, ValueType, Attribute,
@@ -200,6 +198,7 @@ namespace Mono.CSharp
 		public readonly PredefinedType SecurityAction;
 		public readonly PredefinedType Dictionary;
 		public readonly PredefinedType Hashtable;
+		public readonly TypeSpec[] SwitchUserTypes;
 
 		//
 		// C# 3.0
@@ -321,6 +320,8 @@ namespace Mono.CSharp
 			Task.Define ();
 			if (TaskGeneric.Define ())
 				TaskGeneric.TypeSpec.IsGenericTask = true;
+
+			SwitchUserTypes = Switch.CreateSwitchUserTypes (module, Nullable.TypeSpec);
 		}
 	}
 
diff --git a/ICSharpCode.NRefactory.CSharp/Parser/mcs/typespec.cs b/ICSharpCode.NRefactory.CSharp/Parser/mcs/typespec.cs
index 0da8133f..a33159d8 100644
--- a/ICSharpCode.NRefactory.CSharp/Parser/mcs/typespec.cs
+++ b/ICSharpCode.NRefactory.CSharp/Parser/mcs/typespec.cs
@@ -651,6 +651,7 @@ namespace Mono.CSharp
 			case MemberKind.Struct:
 			case MemberKind.Enum:
 			case MemberKind.Void:
+			case MemberKind.PointerType:
 				return false;
 			case MemberKind.InternalCompilerType:
 				//