Updated mcs (fixed char posititions).

ICSharpCode.NRefactory.CSharp/Parser/mcs/class.cs

@@ -319,6 +319,12 @@ namespace Mono.CSharp
 			}
 		}
 
+		public TypeSpec[] Interfaces {
+			get {
+				return iface_exprs;
+			}
+		}
+
 		#endregion
 
 		public override void Accept (StructuralVisitor visitor)

ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-tokenizer.cs

@@ -3188,7 +3188,6 @@ namespace Mono.CSharp
 					}
 					// Handle double-slash comments.
 					if (d == '/') {
-						Console.WriteLine (line + "/" + col);
 						get_char ();
 						if (doc_processing) {
 							if (peek_char () == '/') {
@@ -3432,16 +3431,20 @@ namespace Mono.CSharp
 
 		int TokenizeBackslash ()
 		{
+#if FULL_AST
+			int read_start = reader.Position;
+#endif
+			Location start_location = Location;
 			int c = get_char ();
 			tokens_seen = true;
 			if (c == '\'') {
-				val = new CharLiteral (context.BuiltinTypes, (char) c, Location);
+				val = new CharLiteral (context.BuiltinTypes, (char) c, start_location);
-				Report.Error (1011, Location, "Empty character literal");
+				Report.Error (1011, start_location, "Empty character literal");
 				return Token.LITERAL;
 			}
 
-			if (c == '\n') {
+			if (c == '\r') {
-				Report.Error (1010, Location, "Newline in constant");
+				Report.Error (1010, start_location, "Newline in constant");
 				return Token.ERROR;
 			}
 
@@ -3452,11 +3455,12 @@ namespace Mono.CSharp
 			if (d != 0)
 				throw new NotImplementedException ();
 
-			val = new CharLiteral (context.BuiltinTypes, (char) c, Location);
+			ILiteralConstant res = new CharLiteral (context.BuiltinTypes, (char) c, start_location);
+			val = res;
 			c = get_char ();
 
 			if (c != '\'') {
-				Report.Error (1012, Location, "Too many characters in character literal");
+				Report.Error (1012, start_location, "Too many characters in character literal");
 
 				// Try to recover, read until newline or next "'"
 				while ((c = get_char ()) != -1) {
@@ -3465,6 +3469,10 @@ namespace Mono.CSharp
 				}
 			}
 
+#if FULL_AST
+			res.ParsedValue = reader.ReadChars (read_start - 1, reader.Position);
+#endif
+
 			return Token.LITERAL;
 		}
 

ICSharpCode.NRefactory.CSharp/Parser/mcs/ecore.cs

@@ -1862,6 +1862,17 @@ namespace Mono.CSharp {
 					c = new ReducedConstantExpression (c, orig_expr);
 				return c;
 			}
+
+			public override void EncodeAttributeValue (IMemberContext rc, AttributeEncoder enc, TypeSpec targetType)
+			{
+				//
+				// LAMESPEC: Reduced conditional expression is allowed as an attribute argument
+				//
+				if (orig_expr is Conditional)
+					child.EncodeAttributeValue (rc, enc, targetType);
+				else
+					base.EncodeAttributeValue (rc, enc, targetType);
+			}
 		}
 
 		sealed class ReducedExpressionStatement : ExpressionStatement

ICSharpCode.NRefactory.CSharp/Parser/mcs/expression.cs

@@ -4563,8 +4563,32 @@ namespace Mono.CSharp
 		protected override Expression DoResolve (ResolveContext ec)
 		{
 			expr = expr.Resolve (ec);
+
+			//
+			// Unreachable code needs different resolve path. For instance for await
+			// expression to not generate unreachable resumable statement
+			//
+			Constant c = expr as Constant;
+			if (c != null && ec.CurrentBranching != null) {
+				bool unreachable = ec.CurrentBranching.CurrentUsageVector.IsUnreachable;
+
+				if (c.IsDefaultValue) {
+					ec.CurrentBranching.CurrentUsageVector.IsUnreachable = true;
+					true_expr = true_expr.Resolve (ec);
+					ec.CurrentBranching.CurrentUsageVector.IsUnreachable = unreachable;
+
+					false_expr = false_expr.Resolve (ec);
+				} else {
+					true_expr = true_expr.Resolve (ec);
+
+					ec.CurrentBranching.CurrentUsageVector.IsUnreachable = true;
+					false_expr = false_expr.Resolve (ec);
+					ec.CurrentBranching.CurrentUsageVector.IsUnreachable = unreachable;
+				}
+			} else {
 				true_expr = true_expr.Resolve (ec);
 				false_expr = false_expr.Resolve (ec);
+			}
 
 			if (true_expr == null || false_expr == null || expr == null)
 				return null;
@@ -4604,11 +4628,17 @@ namespace Mono.CSharp
 				}
 			}			
 
-			// Dead code optimalization
+			if (c != null) {
-			Constant c = expr as Constant;
-			if (c != null){
 				bool is_false = c.IsDefaultValue;
-				ec.Report.Warning (429, 4, is_false ? true_expr.Location : false_expr.Location, "Unreachable expression code detected");
+
+				//
+				// Don't issue the warning for constant expressions
+				//
+				if (!(is_false ? true_expr is Constant : false_expr is Constant)) {
+					ec.Report.Warning (429, 4, is_false ? true_expr.Location : false_expr.Location,
+						"Unreachable expression code detected");
+				}
+
 				return ReducedExpression.Create (
 					is_false ? false_expr : true_expr, this,
 					false_expr is Constant && true_expr is Constant).Resolve (ec);
@@ -5965,7 +5995,7 @@ namespace Mono.CSharp
 		{
 			var current_field = rc.CurrentMemberDefinition as FieldBase;
 			TypeExpression type;
-			if (current_field != null) {
+			if (current_field != null && rc.CurrentAnonymousMethod == null) {
 				type = new TypeExpression (current_field.MemberType, current_field.Location);
 			} else if (variable != null) {
 				if (variable.TypeExpression is VarExpr) {

ICSharpCode.NRefactory.CSharp/Parser/mcs/flowanalysis.cs

@@ -251,7 +251,12 @@ namespace Mono.CSharp
 			}
 
 			public bool IsUnreachable {
-				get { return is_unreachable; }
+				get {
+					return is_unreachable;
+				}
+				set {
+					is_unreachable = value;
+				}
 			}
 
 			public void ResetBarrier ()

ICSharpCode.NRefactory.CSharp/Parser/mcs/method.cs

@@ -613,7 +613,7 @@ namespace Mono.CSharp {
 			MethodData = new MethodData (
 				this, ModFlags, flags, this, MethodBuilder, GenericMethod, base_method);
 
-			if (!MethodData.Define (Parent.PartialContainer, GetFullName (MemberName), Report))
+			if (!MethodData.Define (Parent.PartialContainer, GetFullName (MemberName)))
 				return false;
 					
 			MethodBuilder = MethodData.MethodBuilder;
@@ -1819,32 +1819,34 @@ namespace Mono.CSharp {
 			this.parent_method = parent_method;
 		}
 
-		public bool Define (DeclSpace parent, string method_full_name, Report Report)
+		public bool Define (TypeContainer container, string method_full_name)
 		{
-			TypeContainer container = parent.PartialContainer;
-
 			PendingImplementation pending = container.PendingImplementations;
 			MethodSpec ambig_iface_method;
+			bool optional = false;
+
 			if (pending != null) {
-				implementing = pending.IsInterfaceMethod (method.MethodName, member.InterfaceType, this, out ambig_iface_method);
+				implementing = pending.IsInterfaceMethod (method.MethodName, member.InterfaceType, this, out ambig_iface_method, ref optional);
 
 				if (member.InterfaceType != null) {
 					if (implementing == null) {
 						if (member is PropertyBase) {
-							Report.Error (550, method.Location, "`{0}' is an accessor not found in interface member `{1}{2}'",
+							container.Compiler.Report.Error (550, method.Location,
+								"`{0}' is an accessor not found in interface member `{1}{2}'",
 									  method.GetSignatureForError (), TypeManager.CSharpName (member.InterfaceType),
 									  member.GetSignatureForError ().Substring (member.GetSignatureForError ().LastIndexOf ('.')));
 
 						} else {
-							Report.Error (539, method.Location,
+							container.Compiler.Report.Error (539, method.Location,
 									  "`{0}.{1}' in explicit interface declaration is not a member of interface",
 									  TypeManager.CSharpName (member.InterfaceType), member.ShortName);
 						}
 						return false;
 					}
 					if (implementing.IsAccessor && !method.IsAccessor) {
-						Report.SymbolRelatedToPreviousError (implementing);
+						container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
-						Report.Error (683, method.Location, "`{0}' explicit method implementation cannot implement `{1}' because it is an accessor",
+						container.Compiler.Report.Error (683, method.Location,
+							"`{0}' explicit method implementation cannot implement `{1}' because it is an accessor",
 							member.GetSignatureForError (), TypeManager.CSharpSignature (implementing));
 						return false;
 					}
@@ -1852,20 +1854,23 @@ namespace Mono.CSharp {
 					if (implementing != null) {
 						if (!method.IsAccessor) {
 							if (implementing.IsAccessor) {
-								Report.SymbolRelatedToPreviousError (implementing);
+								container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
-								Report.Error (470, method.Location, "Method `{0}' cannot implement interface accessor `{1}'",
+								container.Compiler.Report.Error (470, method.Location,
+									"Method `{0}' cannot implement interface accessor `{1}'",
 									method.GetSignatureForError (), TypeManager.CSharpSignature (implementing));
 							}
 						} else if (implementing.DeclaringType.IsInterface) {
 							if (!implementing.IsAccessor) {
-								Report.SymbolRelatedToPreviousError (implementing);
+								container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
-								Report.Error (686, method.Location, "Accessor `{0}' cannot implement interface member `{1}' for type `{2}'. Use an explicit interface implementation",
+								container.Compiler.Report.Error (686, method.Location,
+									"Accessor `{0}' cannot implement interface member `{1}' for type `{2}'. Use an explicit interface implementation",
 									method.GetSignatureForError (), TypeManager.CSharpSignature (implementing), container.GetSignatureForError ());
 							} else {
 								PropertyBase.PropertyMethod pm = method as PropertyBase.PropertyMethod;
 								if (pm != null && pm.HasCustomAccessModifier && (pm.ModFlags & Modifiers.PUBLIC) == 0) {
-									Report.SymbolRelatedToPreviousError (implementing);
+									container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
-									Report.Error (277, method.Location, "Accessor `{0}' must be declared public to implement interface member `{1}'",
+									container.Compiler.Report.Error (277, method.Location,
+										"Accessor `{0}' must be declared public to implement interface member `{1}'",
 										method.GetSignatureForError (), implementing.GetSignatureForError ());
 								}
 							}
@@ -1881,43 +1886,44 @@ namespace Mono.CSharp {
 			// explicit implementations, make sure we are private.
 			//
 			if (implementing != null){
-				//
+				if (member.IsExplicitImpl) {
-				// Setting null inside this block will trigger a more
-				// verbose error reporting for missing interface implementations
-				//
-				// The "candidate" function has been flagged already
-				// but it wont get cleared
-				//
-				if (member.IsExplicitImpl){
 					if (method.ParameterInfo.HasParams && !implementing.Parameters.HasParams) {
-						Report.SymbolRelatedToPreviousError (implementing);
+						container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
-						Report.Error (466, method.Location, "`{0}': the explicit interface implementation cannot introduce the params modifier",
+						container.Compiler.Report.Error (466, method.Location,
+							"`{0}': the explicit interface implementation cannot introduce the params modifier",
 							method.GetSignatureForError ());
 					}
 
 					if (ambig_iface_method != null) {
-						Report.SymbolRelatedToPreviousError (ambig_iface_method);
+						container.Compiler.Report.SymbolRelatedToPreviousError (ambig_iface_method);
-						Report.SymbolRelatedToPreviousError (implementing);
+						container.Compiler.Report.SymbolRelatedToPreviousError (implementing);
-						Report.Warning (473, 2, method.Location,
+						container.Compiler.Report.Warning (473, 2, method.Location,
 							"Explicit interface implementation `{0}' matches more than one interface member. Consider using a non-explicit implementation instead",
 							method.GetSignatureForError ());
 					}
-
 				} else {
+					//
+					// Setting implementin to null inside this block will trigger a more
+					// verbose error reporting for missing interface implementations
+					//
 					if (implementing.DeclaringType.IsInterface) {
 						//
 						// If this is an interface method implementation,
 						// check for public accessibility
 						//
-						if ((flags & MethodAttributes.MemberAccessMask) != MethodAttributes.Public)
+						if ((flags & MethodAttributes.MemberAccessMask) != MethodAttributes.Public) {
-						{
+							implementing = null;
+						} else if (optional && (container.Interfaces == null || Array.IndexOf (container.Interfaces, implementing.DeclaringType) < 0)) {
+							//
+							// We are not implementing interface when base class already implemented it
+							//
 							implementing = null;
 						}
-					} else if ((flags & MethodAttributes.MemberAccessMask) == MethodAttributes.Private){
+					} else if ((flags & MethodAttributes.MemberAccessMask) == MethodAttributes.Private) {
 						// We may never be private.
 						implementing = null;
 
-					} else if ((modifiers & Modifiers.OVERRIDE) == 0){
+					} else if ((modifiers & Modifiers.OVERRIDE) == 0) {
 						//
 						// We may be protected if we're overriding something.
 						//
@@ -1941,8 +1947,7 @@ namespace Mono.CSharp {
 				// When implementing interface methods, set NewSlot
 				// unless, we are overwriting a method.
 				//
-				if (implementing.DeclaringType.IsInterface){
+				if ((modifiers & Modifiers.OVERRIDE) == 0 && implementing.DeclaringType.IsInterface) {
-					if ((modifiers & Modifiers.OVERRIDE) == 0)
 					flags |= MethodAttributes.NewSlot;
 				}
 
@@ -1955,8 +1960,8 @@ namespace Mono.CSharp {
 				//
 				// clear the pending implementation flag (requires explicit methods to be defined first)
 				//
-				parent.PartialContainer.PendingImplementations.ImplementMethod (method.MethodName,
+				pending.ImplementMethod (method.MethodName,
-					member.InterfaceType, this, member.IsExplicitImpl, out ambig_iface_method);
+					member.InterfaceType, this, member.IsExplicitImpl, out ambig_iface_method, ref optional);
 
 				//
 				// Update indexer accessor name to match implementing abstract accessor

ICSharpCode.NRefactory.CSharp/Parser/mcs/pending.cs

@@ -345,14 +345,14 @@ namespace Mono.CSharp {
 		/// <summary>
 		///   Whether the specified method is an interface method implementation
 		/// </summary>
-		public MethodSpec IsInterfaceMethod (MemberName name, TypeSpec ifaceType, MethodData method, out MethodSpec ambiguousCandidate)
+		public MethodSpec IsInterfaceMethod (MemberName name, TypeSpec ifaceType, MethodData method, out MethodSpec ambiguousCandidate, ref bool optional)
 		{
-			return InterfaceMethod (name, ifaceType, method, Operation.Lookup, out ambiguousCandidate);
+			return InterfaceMethod (name, ifaceType, method, Operation.Lookup, out ambiguousCandidate, ref optional);
 		}
 
-		public void ImplementMethod (MemberName name, TypeSpec ifaceType, MethodData method, bool clear_one, out MethodSpec ambiguousCandidate)
+		public void ImplementMethod (MemberName name, TypeSpec ifaceType, MethodData method, bool clear_one, out MethodSpec ambiguousCandidate, ref bool optional)
 		{
-			InterfaceMethod (name, ifaceType, method, clear_one ? Operation.ClearOne : Operation.ClearAll, out ambiguousCandidate);
+			InterfaceMethod (name, ifaceType, method, clear_one ? Operation.ClearOne : Operation.ClearAll, out ambiguousCandidate, ref optional);
 		}
 
 		/// <remarks>
@@ -372,7 +372,7 @@ namespace Mono.CSharp {
 		///   that was used in the interface, then we always need to create a proxy for it.
 		///
 		/// </remarks>
-		public MethodSpec InterfaceMethod (MemberName name, TypeSpec iType, MethodData method, Operation op, out MethodSpec ambiguousCandidate)
+		public MethodSpec InterfaceMethod (MemberName name, TypeSpec iType, MethodData method, Operation op, out MethodSpec ambiguousCandidate, ref bool optional)
 		{
 			ambiguousCandidate = null;
 
@@ -439,6 +439,7 @@ namespace Mono.CSharp {
 						}
 					} else {
 						tm.found [i] = method;
+						optional = tm.optional;
 					}
 
 					if (op == Operation.Lookup && name.Left != null && ambiguousCandidate == null) {

ICSharpCode.NRefactory.CSharp/Parser/mcs/property.cs

@@ -205,7 +205,7 @@ namespace Mono.CSharp
 
 				method_data = new MethodData (method, ModFlags, flags, this);
 
-				if (!method_data.Define (parent, method.GetFullName (MemberName), Report))
+				if (!method_data.Define (parent.PartialContainer, method.GetFullName (MemberName)))
 					return null;
 
 				Spec.SetMetaInfo (method_data.MethodBuilder);
@@ -272,7 +272,7 @@ namespace Mono.CSharp
 
 				method_data = new MethodData (method, ModFlags, flags, this);
 
-				if (!method_data.Define (parent, method.GetFullName (MemberName), Report))
+				if (!method_data.Define (parent.PartialContainer, method.GetFullName (MemberName)))
 					return null;
 
 				Spec.SetMetaInfo (method_data.MethodBuilder);
@@ -1165,7 +1165,7 @@ namespace Mono.CSharp
 				method_data = new MethodData (method, method.ModFlags,
 					method.flags | MethodAttributes.HideBySig | MethodAttributes.SpecialName, this);
 
-				if (!method_data.Define (parent, method.GetFullName (MemberName), Report))
+				if (!method_data.Define (parent.PartialContainer, method.GetFullName (MemberName)))
 					return null;
 
 				MethodBuilder mb = method_data.MethodBuilder;