Reduced the memory consumption of identifiers a bit by saving the

'isverbatim' bool.
Note: Don't introduce that as virtual property, otherwise the memory
saving is lost.

ICSharpCode.NRefactory.VB.Tests/Parser/GlobalScope/ImportsStatementTests.cs

@@ -1,4 +1,4 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
@@ -47,7 +47,7 @@ namespace ICSharpCode.NRefactory.VB.Tests.Ast
 			string program = "Imports My.Name.Space\n";
 			
 			var clause2 = new MemberImportsClause {
-				Member = new QualifiedType(new QualifiedType(new SimpleType("My"), new Identifier("Name", AstLocation.Empty)), new Identifier("Space", AstLocation.Empty))
+				Member = new QualifiedType(new QualifiedType(new SimpleType("My"), Identifier.Create ("Name", AstLocation.Empty)), Identifier.Create ("Space", AstLocation.Empty))
 			};
 			
 			var node = new ImportsStatement();

ICSharpCode.NRefactory.VB/Ast/General/TypeParameterDeclaration.cs

@@ -1,4 +1,4 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
@@ -21,7 +21,7 @@ namespace ICSharpCode.NRefactory.VB.Ast
 		
 		public string Name {
 			get { return GetChildByRole (Roles.Identifier).Name; }
-			set { SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty)); }
+			set { SetChildByRole(Roles.Identifier, Identifier.Create (value, AstLocation.Empty)); }
 		}
 		
 		public AstNodeCollection<AstType> Constraints {

ICSharpCode.NRefactory.VB/Ast/GlobalScope/NamespaceDeclaration.cs

@@ -1,4 +1,4 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
@@ -30,7 +30,7 @@ namespace ICSharpCode.NRefactory.VB.Ast
 				return builder.ToString ();
 			}
 			set {
-				GetChildrenByRole(Roles.Identifier).ReplaceWith(value.Split('.').Select(ident => new Identifier(ident, AstLocation.Empty)));
+				GetChildrenByRole(Roles.Identifier).ReplaceWith(value.Split('.').Select(ident => Identifier.Create (ident, AstLocation.Empty)));
 			}
 		}
 		

ICSharpCode.NRefactory.VB/Ast/GlobalScope/TypeDeclaration.cs

@@ -1,4 +1,4 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
@@ -23,7 +23,7 @@ namespace ICSharpCode.NRefactory.VB.Ast
 		public string Name {
 			get { return GetChildByRole(Roles.Identifier).Name; }
 			set { 
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory.VB/Ast/TypeName/QualifiedType.cs

@@ -1,4 +1,4 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
 // This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
 using System;
@@ -24,7 +24,7 @@ namespace ICSharpCode.NRefactory.VB.Ast
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory.VB/Ast/TypeName/SimpleType.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // FullTypeName.cs
 //
 // Author:
@@ -44,7 +44,7 @@ namespace ICSharpCode.NRefactory.VB.Ast
 		
 		public SimpleType(string identifier, AstLocation location)
 		{
-			SetChildByRole (Roles.Identifier, new Identifier(identifier, location));
+			SetChildByRole (Roles.Identifier, Identifier.Create (identifier, location));
 		}
 		
 		public string Identifier {
@@ -52,7 +52,7 @@ namespace ICSharpCode.NRefactory.VB.Ast
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory.VB/Parser/Parser.cs

@@ -402,7 +402,7 @@ partial class VBParser
 		while (la.kind == 26) {
 			Get();
 			Identifier();
-			type = new QualifiedType(type, new Identifier(t.val, t.Location));
+			type = new QualifiedType(type, Identifier.Create (t.val, t.Location));
 		}
 	}
 
@@ -445,7 +445,7 @@ partial class VBParser
 		var result = new AliasImportsClause(); NodeStart(result);
 		AstType alias;
 		Identifier();
-		result.Name = new Identifier(t.val, t.Location);
+		result.Name = Identifier.Create (t.val, t.Location);
 		Expect(20);
 		TypeName(out alias);
 		result.Alias = alias;

ICSharpCode.NRefactory/CSharp/Ast/Expressions/IdentifierExpression.cs

@@ -40,7 +40,7 @@ namespace ICSharpCode.NRefactory.CSharp
 		
 		public IdentifierExpression(string identifier, AstLocation location)
 		{
-			SetChildByRole(Roles.Identifier, new Identifier(identifier, location));
+			SetChildByRole(Roles.Identifier, CSharp.Identifier.Create (identifier, location));
 		}
 		
 //		public Identifier IdentifierToken {
@@ -52,7 +52,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, CSharp.Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Expressions/MemberReferenceExpression.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // MemberReferenceExpression.cs
 //
 // Author:
@@ -43,7 +43,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Expressions/NamedArgumentExpression.cs

@@ -15,7 +15,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, CSharp.Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Expressions/PointerReferenceExpression.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // PointerReferenceExpression.cs
 //  
 // Author:
@@ -45,7 +45,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Expressions/QueryExpression.cs

@@ -89,7 +89,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, CSharp.Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		
@@ -120,7 +120,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, CSharp.Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		
@@ -153,7 +153,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole(Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, CSharp.Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		
@@ -237,7 +237,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole(JoinIdentifierRole).Name;
 			}
 			set {
-				SetChildByRole(JoinIdentifierRole, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(JoinIdentifierRole, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		
@@ -277,7 +277,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (IntoIdentifierRole).Name;
 			}
 			set {
-				SetChildByRole(IntoIdentifierRole, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(IntoIdentifierRole, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/GeneralScope/Constraint.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // Constraint.cs
 //
 // Author:
@@ -50,7 +50,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/GeneralScope/DelegateDeclaration.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // DelegateDeclaration.cs
 //
 // Author:
@@ -50,7 +50,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/GeneralScope/ExternAliasDeclaration.cs

@@ -52,7 +52,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/GeneralScope/NamespaceDeclaration.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // NamespaceDeclaration.cs
 //  
 // Author:
@@ -54,7 +54,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return builder.ToString ();
 			}
 			set {
-				GetChildrenByRole(Roles.Identifier).ReplaceWith(value.Split('.').Select(ident => new Identifier(ident, AstLocation.Empty)));
+				GetChildrenByRole(Roles.Identifier).ReplaceWith(value.Split('.').Select(ident => Identifier.Create (ident, AstLocation.Empty)));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/GeneralScope/TypeDeclaration.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // TypeDeclaration.cs
 //
 // Author:
@@ -55,7 +55,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/GeneralScope/TypeParameterDeclaration.cs

@@ -35,7 +35,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/GeneralScope/UsingAliasDeclaration.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // UsingAliasDeclaration.cs
 //  
 // Author:
@@ -49,7 +49,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (AliasRole).Name;
 			}
 			set {
-				SetChildByRole(AliasRole, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(AliasRole, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		
@@ -72,13 +72,13 @@ namespace ICSharpCode.NRefactory.CSharp
 		
 		public UsingAliasDeclaration (string alias, string nameSpace)
 		{
-			AddChild (new Identifier (alias, AstLocation.Empty), AliasRole);
+			AddChild (Identifier.Create (alias, AstLocation.Empty), AliasRole);
 			AddChild (new SimpleType (nameSpace), ImportRole);
 		}
 		
 		public UsingAliasDeclaration (string alias, AstType import)
 		{
-			AddChild (new Identifier (alias, AstLocation.Empty), AliasRole);
+			AddChild (Identifier.Create (alias, AstLocation.Empty), AliasRole);
 			AddChild (import, ImportRole);
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Identifier.cs

@@ -30,7 +30,7 @@ namespace ICSharpCode.NRefactory.CSharp
 {
 	public class Identifier : AstNode, IRelocatable
 	{
-		public static readonly new Identifier Null = new NullIdentifier ();
+		public static readonly Identifier Null = new NullIdentifier ();
 		class NullIdentifier : Identifier
 		{
 			public override bool IsNull {
@@ -66,14 +66,6 @@ namespace ICSharpCode.NRefactory.CSharp
 			}
 		}
 		
-		/// <summary>
-		/// True if this is a verbatim identifier (starting with '@')
-		/// </summary>
-		public bool IsVerbatim {
-			get;
-			set;
-		}
-		
 		AstLocation startLocation;
 		public override AstLocation StartLocation {
 			get {
@@ -91,23 +83,46 @@ namespace ICSharpCode.NRefactory.CSharp
 		
 		public override AstLocation EndLocation {
 			get {
-				return new AstLocation (StartLocation.Line, StartLocation.Column + (Name ?? "").Length + (IsVerbatim ? 1 : 0));
+				return new AstLocation (StartLocation.Line, StartLocation.Column + (Name ?? "").Length);
 			}
 		}
 		
-		private Identifier ()
+		Identifier ()
 		{
 			this.name = string.Empty;
 		}
 		
-		public Identifier (string name, AstLocation location)
+		protected Identifier (string name, AstLocation location)
 		{
 			if (name == null)
 				throw new ArgumentNullException("name");
-			IsVerbatim = name.Length > 0 && name[0] == '@';
-			this.Name = IsVerbatim ? name.Substring (1) : name;
+			this.Name = name;
 			this.startLocation = location;
 		}
+
+		public static Identifier Create (string name)
+		{
+			return Create (name, AstLocation.Empty);
+		}
+
+		public static Identifier Create (string name, AstLocation location)
+		{
+			if (name == null)
+				throw new ArgumentNullException("name");
+			if (name.Length > 0 && name[0] == '@')
+				return new VerbatimIdentifier(name.Substring (1), location);
+			return Identifier.Create (name, location);
+		}
+		
+		public static Identifier Create (string name, AstLocation location, bool isVerbatim)
+		{
+			if (name == null)
+				throw new ArgumentNullException("name");
+			
+			if (isVerbatim)
+				return new VerbatimIdentifier(name, location);
+			return Identifier.Create (name, location);
+		}
 		
 		public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
 		{
@@ -119,5 +134,19 @@ namespace ICSharpCode.NRefactory.CSharp
 			Identifier o = other as Identifier;
 			return o != null && !o.IsNull && MatchString(this.Name, o.Name);
 		}
+
+		public class VerbatimIdentifier : Identifier
+		{
+			public override AstLocation EndLocation {
+				get {
+					return new AstLocation (StartLocation.Line, StartLocation.Column + (Name ?? "").Length + 1); // @"..."
+				}
+			}
+
+			public VerbatimIdentifier(string name, AstLocation location) : base (name, location)
+			{
+
+			}
+		}
 	}
-}
+}

ICSharpCode.NRefactory/CSharp/Ast/MemberType.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // FullTypeName.cs
 //
 // Author:
@@ -47,7 +47,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/SimpleType.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // FullTypeName.cs
 //
 // Author:
@@ -44,7 +44,7 @@ namespace ICSharpCode.NRefactory.CSharp
 		
 		public SimpleType(string identifier, AstLocation location)
 		{
-			SetChildByRole (Roles.Identifier, new Identifier(identifier, location));
+			SetChildByRole (Roles.Identifier, CSharp.Identifier.Create (identifier, location));
 		}
 		
 		public string Identifier {
@@ -52,7 +52,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, CSharp.Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Statements/ForeachStatement.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // ForeachStatement.cs
 //
 // Author:
@@ -49,7 +49,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Statements/GotoStatement.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // GotoStatement.cs
 //
 // Author:
@@ -52,7 +52,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (string.IsNullOrEmpty(value))
 					SetChildByRole(Roles.Identifier, null);
 				else
-					SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+					SetChildByRole(Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Statements/LabelStatement.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // LabelStatement.cs
 //
 // Author:
@@ -36,7 +36,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole(Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole(Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/Statements/TryCatchStatement.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // TryCatchStatement.cs
 //
 // Author:
@@ -140,7 +140,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (string.IsNullOrEmpty(value))
 					SetChildByRole (Roles.Identifier, null);
 				else
-					SetChildByRole (Roles.Identifier, new Identifier(value, AstLocation.Empty));
+					SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/TypeMembers/EnumMemberDeclaration.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // EnumMemberDeclaration.cs
 //
 // Author:
@@ -36,7 +36,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier(value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/TypeMembers/FixedVariableInitializer.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // FixedFieldDeclaration.cs
 //
 // Author:
@@ -54,7 +54,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/TypeMembers/MemberDeclaration.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // AbstractMember.cs
 //
 // Author:
@@ -48,7 +48,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/TypeMembers/ParameterDeclaration.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // ParameterDeclarationExpression.cs
 //
 // Author:
@@ -68,7 +68,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Ast/TypeMembers/VariableInitializer.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // VariableInitializer.cs
 //
 // Author:
@@ -85,7 +85,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return GetChildByRole (Roles.Identifier).Name;
 			}
 			set {
-				SetChildByRole (Roles.Identifier, new Identifier (value, AstLocation.Empty));
+				SetChildByRole (Roles.Identifier, Identifier.Create (value, AstLocation.Empty));
 			}
 		}
 		

ICSharpCode.NRefactory/CSharp/Parser/CSharpParser.cs

@@ -1,4 +1,4 @@
-// 
+// 
 // CSharpParser.cs
 //
 // Author:
@@ -126,7 +126,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					
 					var memberType = new MemberType ();
 					memberType.AddChild (ConvertToType (ma.LeftExpression), MemberType.TargetRole);
-					memberType.MemberNameToken = new Identifier (ma.Name, Convert (ma.Location));
+					memberType.MemberNameToken = Identifier.Create (ma.Name, Convert (ma.Location));
 					
 					AddTypeArguments (ma, memberType);
 					return memberType;
@@ -257,7 +257,7 @@ namespace ICSharpCode.NRefactory.CSharp
 			{
 				AstNode insertPos = null;
 				while (memberName != null) {
-					Identifier newIdent = new Identifier (memberName.Name, Convert (memberName.Location));
+					Identifier newIdent = Identifier.Create (memberName.Name, Convert (memberName.Location));
 					namespaceDecl.InsertChildBefore (insertPos, newIdent, NamespaceDeclaration.Roles.Identifier);
 					insertPos = newIdent;
 					memberName = memberName.Left;
@@ -277,7 +277,7 @@ namespace ICSharpCode.NRefactory.CSharp
 			{
 				UsingAliasDeclaration ud = new UsingAliasDeclaration ();
 				ud.AddChild (new CSharpTokenNode (Convert (u.UsingLocation), "using".Length), UsingAliasDeclaration.Roles.Keyword);
-				ud.AddChild (new Identifier (u.Identifier.Value, Convert (u.Identifier.Location)), UsingAliasDeclaration.AliasRole);
+				ud.AddChild (Identifier.Create (u.Identifier.Value, Convert (u.Identifier.Location)), UsingAliasDeclaration.AliasRole);
 				ud.AddChild (new CSharpTokenNode (Convert (u.AssignLocation), 1), UsingAliasDeclaration.Roles.Assign);
 				ud.AddChild (ConvertImport (u.Nspace), UsingAliasDeclaration.ImportRole);
 				ud.AddChild (new CSharpTokenNode (Convert (u.SemicolonLocation), 1), UsingAliasDeclaration.Roles.Semicolon);
@@ -289,7 +289,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				var ud = new ExternAliasDeclaration ();
 				ud.AddChild (new CSharpTokenNode (Convert (u.ExternLocation), "extern".Length), ExternAliasDeclaration.Roles.Keyword);
 				ud.AddChild (new CSharpTokenNode (Convert (u.AliasLocation), "alias".Length), ExternAliasDeclaration.AliasRole);
-				ud.AddChild (new Identifier (u.Identifier.Value, Convert (u.Identifier.Location)), ExternAliasDeclaration.Roles.Identifier);
+				ud.AddChild (Identifier.Create (u.Identifier.Value, Convert (u.Identifier.Location)), ExternAliasDeclaration.Roles.Identifier);
 				ud.AddChild (new CSharpTokenNode (Convert (u.SemicolonLocation), 1), UsingAliasDeclaration.Roles.Semicolon);
 				AddToNamespace (ud);
 			}
@@ -301,12 +301,12 @@ namespace ICSharpCode.NRefactory.CSharp
 					var t = new MemberType();
 					t.IsDoubleColon = memberName.IsDoubleColon;
 					t.AddChild (ConvertImport (memberName.Left), MemberType.TargetRole);
-					t.AddChild (new Identifier (memberName.Name, Convert(memberName.Location)), MemberType.Roles.Identifier);
+					t.AddChild (Identifier.Create (memberName.Name, Convert(memberName.Location)), MemberType.Roles.Identifier);
 					AddTypeArguments (t, (List<Location>)null, memberName.TypeArguments);
 					return t;
 				} else {
 					SimpleType t = new SimpleType();
-					t.AddChild (new Identifier (memberName.Name, Convert(memberName.Location)), SimpleType.Roles.Identifier);
+					t.AddChild (Identifier.Create (memberName.Name, Convert(memberName.Location)), SimpleType.Roles.Identifier);
 					AddTypeArguments (t, (List<Location>)null, memberName.TypeArguments);
 					return t;
 				}
@@ -330,7 +330,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				AddModifiers (newType, location);
 				if (location != null)
 					newType.AddChild (new CSharpTokenNode (Convert (location[0]), "class".Length), TypeDeclaration.Roles.Keyword);
-				newType.AddChild (new Identifier (c.MemberName.Name, Convert (c.MemberName.Location)), AstNode.Roles.Identifier);
+				newType.AddChild (Identifier.Create (c.MemberName.Name, Convert (c.MemberName.Location)), AstNode.Roles.Identifier);
 				if (c.MemberName.TypeArguments != null)  {
 					var typeArgLocation = LocationsBag.GetLocations (c.MemberName);
 					if (typeArgLocation != null)
@@ -364,7 +364,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				AddModifiers (newType, location);
 				if (location != null)
 					newType.AddChild (new CSharpTokenNode (Convert (location[0]), "struct".Length), TypeDeclaration.Roles.Keyword);
-				newType.AddChild (new Identifier (s.MemberName.Name, Convert (s.MemberName.Location)), AstNode.Roles.Identifier);
+				newType.AddChild (Identifier.Create (s.MemberName.Name, Convert (s.MemberName.Location)), AstNode.Roles.Identifier);
 				if (s.MemberName.TypeArguments != null)  {
 					var typeArgLocation = LocationsBag.GetLocations (s.MemberName);
 					if (typeArgLocation != null)
@@ -400,7 +400,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				AddModifiers (newType, location);
 				if (location != null)
 					newType.AddChild (new CSharpTokenNode (Convert (location[0]), "interface".Length), TypeDeclaration.Roles.Keyword);
-				newType.AddChild (new Identifier (i.MemberName.Name, Convert (i.MemberName.Location)), AstNode.Roles.Identifier);
+				newType.AddChild (Identifier.Create (i.MemberName.Name, Convert (i.MemberName.Location)), AstNode.Roles.Identifier);
 				if (i.MemberName.TypeArguments != null)  {
 					var typeArgLocation = LocationsBag.GetLocations (i.MemberName);
 					if (typeArgLocation != null)
@@ -434,7 +434,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (location != null)
 					newDelegate.AddChild (new CSharpTokenNode (Convert (location[0]), "delegate".Length), TypeDeclaration.Roles.Keyword);
 				newDelegate.AddChild (ConvertToType (d.ReturnType), AstNode.Roles.Type);
-				newDelegate.AddChild (new Identifier (d.MemberName.Name, Convert (d.MemberName.Location)), AstNode.Roles.Identifier);
+				newDelegate.AddChild (Identifier.Create (d.MemberName.Name, Convert (d.MemberName.Location)), AstNode.Roles.Identifier);
 				if (d.MemberName.TypeArguments != null)  {
 					var typeArgLocation = LocationsBag.GetLocations (d.MemberName);
 					if (typeArgLocation != null)
@@ -483,7 +483,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				AddModifiers (newType, location);
 				if (location != null)
 					newType.AddChild (new CSharpTokenNode (Convert (location [0]), "enum".Length), TypeDeclaration.Roles.Keyword);
-				newType.AddChild (new Identifier (e.MemberName.Name, Convert (e.MemberName.Location)), AstNode.Roles.Identifier);
+				newType.AddChild (Identifier.Create (e.MemberName.Name, Convert (e.MemberName.Location)), AstNode.Roles.Identifier);
 				
 				if (e.BaseTypeExpression != null)
 					newType.AddChild (ConvertToType (e.BaseTypeExpression), TypeDeclaration.BaseTypeRole);
@@ -502,7 +502,7 @@ namespace ICSharpCode.NRefactory.CSharp
 			{
 				EnumMemberDeclaration newField = new EnumMemberDeclaration ();
 				AddAttributeSection (newField, em);
-				newField.AddChild (new Identifier (em.Name, Convert (em.Location)), AstNode.Roles.Identifier);
+				newField.AddChild (Identifier.Create (em.Name, Convert (em.Location)), AstNode.Roles.Identifier);
 				
 				if (em.Initializer != null) {
 					newField.AddChild ((Expression)em.Initializer.Accept (this), EnumMemberDeclaration.InitializerRole);
@@ -527,7 +527,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				newField.AddChild (ConvertToType (f.TypeName), FixedFieldDeclaration.Roles.Type);
 				
 				var variable = new FixedVariableInitializer ();
-				variable.AddChild (new Identifier (f.MemberName.Name, Convert (f.MemberName.Location)), FixedFieldDeclaration.Roles.Identifier);
+				variable.AddChild (Identifier.Create (f.MemberName.Name, Convert (f.MemberName.Location)), FixedFieldDeclaration.Roles.Identifier);
 				if (!f.Initializer.IsNull) {
 					var bracketLocations = LocationsBag.GetLocations (f.Initializer);
 					if (bracketLocations != null && bracketLocations.Count > 1)
@@ -546,7 +546,7 @@ namespace ICSharpCode.NRefactory.CSharp
 							newField.AddChild (new CSharpTokenNode (Convert (declLoc [0]), 1), FieldDeclaration.Roles.Comma);
 						
 						variable = new FixedVariableInitializer ();
-						variable.AddChild (new Identifier (decl.Name.Value, Convert (decl.Name.Location)), FieldDeclaration.Roles.Identifier);
+						variable.AddChild (Identifier.Create (decl.Name.Value, Convert (decl.Name.Location)), FieldDeclaration.Roles.Identifier);
 						if (!decl.Initializer.IsNull) {
 							var bracketLocations = LocationsBag.GetLocations (f.Initializer);
 							if (bracketLocations != null && bracketLocations.Count > 1)
@@ -574,7 +574,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				newField.AddChild (ConvertToType (f.TypeName), FieldDeclaration.Roles.Type);
 				
 				VariableInitializer variable = new VariableInitializer ();
-				variable.AddChild (new Identifier (f.MemberName.Name, Convert (f.MemberName.Location)), FieldDeclaration.Roles.Identifier);
+				variable.AddChild (Identifier.Create (f.MemberName.Name, Convert (f.MemberName.Location)), FieldDeclaration.Roles.Identifier);
 				
 				if (f.Initializer != null) {
 					if (location != null)
@@ -589,7 +589,7 @@ namespace ICSharpCode.NRefactory.CSharp
 							newField.AddChild (new CSharpTokenNode (Convert (declLoc[0]), 1), FieldDeclaration.Roles.Comma);
 						
 						variable = new VariableInitializer ();
-						variable.AddChild (new Identifier (decl.Name.Value, Convert (decl.Name.Location)), VariableInitializer.Roles.Identifier);
+						variable.AddChild (Identifier.Create (decl.Name.Value, Convert (decl.Name.Location)), VariableInitializer.Roles.Identifier);
 						if (decl.Initializer != null) {
 							variable.AddChild (new CSharpTokenNode (Convert (decl.Initializer.Location), 1), FieldDeclaration.Roles.Assign);
 							variable.AddChild ((Expression)decl.Initializer.Accept (this), VariableInitializer.Roles.Expression);
@@ -615,7 +615,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				newField.AddChild (ConvertToType (f.TypeName), FieldDeclaration.Roles.Type);
 				
 				VariableInitializer variable = new VariableInitializer ();
-				variable.AddChild (new Identifier (f.MemberName.Name, Convert (f.MemberName.Location)), VariableInitializer.Roles.Identifier);
+				variable.AddChild (Identifier.Create (f.MemberName.Name, Convert (f.MemberName.Location)), VariableInitializer.Roles.Identifier);
 				
 				if (f.Initializer != null) {
 					variable.AddChild (new CSharpTokenNode (Convert (f.Initializer.Location), 1), VariableInitializer.Roles.Assign);
@@ -629,7 +629,7 @@ namespace ICSharpCode.NRefactory.CSharp
 							newField.AddChild (new CSharpTokenNode (Convert (declLoc[0]), 1), FieldDeclaration.Roles.Comma);
 						
 						variable = new VariableInitializer ();
-						variable.AddChild (new Identifier (decl.Name.Value, Convert (decl.Name.Location)), FieldDeclaration.Roles.Identifier);
+						variable.AddChild (Identifier.Create (decl.Name.Value, Convert (decl.Name.Location)), FieldDeclaration.Roles.Identifier);
 						if (decl.Initializer != null) {
 							variable.AddChild (new CSharpTokenNode (Convert (decl.Initializer.Location), 1), FieldDeclaration.Roles.Assign);
 							variable.AddChild ((Expression)decl.Initializer.Accept (this), VariableInitializer.Roles.Expression);
@@ -764,7 +764,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (m.MethodName.Left != null)
 					newMethod.AddChild (ConvertToType (m.MethodName.Left), MethodDeclaration.PrivateImplementationTypeRole);
 				
-				newMethod.AddChild (new Identifier (m.MethodName.Name, Convert (m.Location)), AstNode.Roles.Identifier);
+				newMethod.AddChild (Identifier.Create (m.MethodName.Name, Convert (m.Location)), AstNode.Roles.Identifier);
 				
 				if (m.MemberName.TypeArguments != null)  {
 					var typeArgLocation = LocationsBag.GetLocations (m.MemberName);
@@ -854,7 +854,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (p.MemberName.Left != null)
 					newProperty.AddChild (ConvertToType (p.MemberName.Left), PropertyDeclaration.PrivateImplementationTypeRole);
 				
-				newProperty.AddChild (new Identifier (p.MemberName.Name, Convert (p.Location)), PropertyDeclaration.Roles.Identifier);
+				newProperty.AddChild (Identifier.Create (p.MemberName.Name, Convert (p.Location)), PropertyDeclaration.Roles.Identifier);
 				
 				if (location != null)
 					newProperty.AddChild (new CSharpTokenNode (Convert (location[0]), 1), MethodDeclaration.Roles.LBrace);
@@ -902,7 +902,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				AddAttributeSection (newConstructor, c);
 				var location = LocationsBag.GetMemberLocation (c);
 				AddModifiers (newConstructor, location);
-				newConstructor.AddChild (new Identifier (c.MemberName.Name, Convert (c.MemberName.Location)), AstNode.Roles.Identifier);
+				newConstructor.AddChild (Identifier.Create (c.MemberName.Name, Convert (c.MemberName.Location)), AstNode.Roles.Identifier);
 				if (location != null)
 					newConstructor.AddChild (new CSharpTokenNode (Convert (location[0]), 1), MethodDeclaration.Roles.LPar);
 				
@@ -939,7 +939,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				AddModifiers (newDestructor, location);
 				if (location != null)
 					newDestructor.AddChild (new CSharpTokenNode (Convert (location[0]), 1), DestructorDeclaration.TildeRole);
-				newDestructor.AddChild (new Identifier (d.MemberName.Name, Convert (d.MemberName.Location)), AstNode.Roles.Identifier);
+				newDestructor.AddChild (Identifier.Create (d.MemberName.Name, Convert (d.MemberName.Location)), AstNode.Roles.Identifier);
 				
 				if (location != null) {
 					newDestructor.AddChild (new CSharpTokenNode (Convert (location[1]), 1), DestructorDeclaration.Roles.LPar);
@@ -964,7 +964,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				newEvent.AddChild (ConvertToType (e.TypeName), AstNode.Roles.Type);
 				
 				VariableInitializer variable = new VariableInitializer ();
-				variable.AddChild (new Identifier (e.MemberName.Name, Convert (e.MemberName.Location)), FieldDeclaration.Roles.Identifier);
+				variable.AddChild (Identifier.Create (e.MemberName.Name, Convert (e.MemberName.Location)), FieldDeclaration.Roles.Identifier);
 				
 				if (e.Initializer != null) {
 					if (location != null)
@@ -979,7 +979,7 @@ namespace ICSharpCode.NRefactory.CSharp
 							newEvent.AddChild (new CSharpTokenNode (Convert (declLoc[0]), 1), FieldDeclaration.Roles.Comma);
 						
 						variable = new VariableInitializer ();
-						variable.AddChild (new Identifier (decl.Name.Value, Convert (decl.Name.Location)), VariableInitializer.Roles.Identifier);
+						variable.AddChild (Identifier.Create (decl.Name.Value, Convert (decl.Name.Location)), VariableInitializer.Roles.Identifier);
 
 						if (decl.Initializer != null) {
 							variable.AddChild (new CSharpTokenNode (Convert (decl.Initializer.Location), 1), FieldDeclaration.Roles.Assign);
@@ -1008,7 +1008,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (ep.MemberName.Left != null)
 					newEvent.AddChild (ConvertToType (ep.MemberName.Left), CustomEventDeclaration.PrivateImplementationTypeRole);
 				
-				newEvent.AddChild (new Identifier (ep.MemberName.Name, Convert (ep.Location)), CustomEventDeclaration.Roles.Identifier);
+				newEvent.AddChild (Identifier.Create (ep.MemberName.Name, Convert (ep.Location)), CustomEventDeclaration.Roles.Identifier);
 
 				if (location != null && location.Count >= 2)
 					newEvent.AddChild (new CSharpTokenNode (Convert (location[1]), 1), CustomEventDeclaration.Roles.LBrace);
@@ -1057,7 +1057,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				
 				var varInit = new VariableInitializer ();
 				var location = LocationsBag.GetLocations (blockVariableDeclaration);
-				varInit.AddChild (new Identifier (blockVariableDeclaration.Variable.Name, Convert (blockVariableDeclaration.Variable.Location)), VariableInitializer.Roles.Identifier);
+				varInit.AddChild (Identifier.Create (blockVariableDeclaration.Variable.Name, Convert (blockVariableDeclaration.Variable.Location)), VariableInitializer.Roles.Identifier);
 				if (blockVariableDeclaration.Initializer != null) {
 					if (location != null)
 						varInit.AddChild (new CSharpTokenNode (Convert (location[0]), 1), VariableInitializer.Roles.Assign);
@@ -1072,7 +1072,7 @@ namespace ICSharpCode.NRefactory.CSharp
 						var init = new VariableInitializer ();
 						if (loc != null && loc.Count > 0)
 							result.AddChild (new CSharpTokenNode (Convert (loc [0]), 1), VariableInitializer.Roles.Comma);
-						init.AddChild (new Identifier (decl.Variable.Name, Convert (decl.Variable.Location)), VariableInitializer.Roles.Identifier);
+						init.AddChild (Identifier.Create (decl.Variable.Name, Convert (decl.Variable.Location)), VariableInitializer.Roles.Identifier);
 						if (decl.Initializer != null) {
 							if (loc != null && loc.Count > 1)
 								result.AddChild (new CSharpTokenNode (Convert (loc [1]), 1), VariableInitializer.Roles.Assign);
@@ -1098,7 +1098,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				result.AddChild (ConvertToType (blockVariableDeclaration.TypeExpression), VariableDeclarationStatement.Roles.Type);
 				
 				var varInit = new VariableInitializer ();
-				varInit.AddChild (new Identifier (blockVariableDeclaration.Variable.Name, Convert (blockVariableDeclaration.Variable.Location)), VariableInitializer.Roles.Identifier);
+				varInit.AddChild (Identifier.Create (blockVariableDeclaration.Variable.Name, Convert (blockVariableDeclaration.Variable.Location)), VariableInitializer.Roles.Identifier);
 				if (blockVariableDeclaration.Initializer != null) {
 					if (location != null)
 						varInit.AddChild (new CSharpTokenNode (Convert (location[1]), 1), VariableInitializer.Roles.Assign);
@@ -1111,7 +1111,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					foreach (var decl in blockVariableDeclaration.Declarators) {
 						var loc = LocationsBag.GetLocations (decl);
 						var init = new VariableInitializer ();
-						init.AddChild (new Identifier (decl.Variable.Name, Convert (decl.Variable.Location)), VariableInitializer.Roles.Identifier);
+						init.AddChild (Identifier.Create (decl.Variable.Name, Convert (decl.Variable.Location)), VariableInitializer.Roles.Identifier);
 						if (decl.Initializer != null) {
 							if (loc != null)
 								init.AddChild (new CSharpTokenNode (Convert (loc[0]), 1), VariableInitializer.Roles.Assign);
@@ -1280,7 +1280,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				var result = new GotoStatement ();
 				var location = LocationsBag.GetLocations (gotoStatement);
 				result.AddChild (new CSharpTokenNode (Convert (gotoStatement.loc), "goto".Length), GotoStatement.Roles.Keyword);
-				result.AddChild (new Identifier (gotoStatement.Target, Convert (gotoStatement.loc)), GotoStatement.Roles.Identifier);
+				result.AddChild (Identifier.Create (gotoStatement.Target, Convert (gotoStatement.loc)), GotoStatement.Roles.Identifier);
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location[0]), 1), GotoStatement.Roles.Semicolon);
 				
@@ -1290,7 +1290,7 @@ namespace ICSharpCode.NRefactory.CSharp
 			public override object Visit (LabeledStatement labeledStatement)
 			{
 				var result = new LabelStatement ();
-				result.AddChild (new Identifier (labeledStatement.Name, Convert (labeledStatement.loc)), LabelStatement.Roles.Identifier);
+				result.AddChild (Identifier.Create (labeledStatement.Name, Convert (labeledStatement.loc)), LabelStatement.Roles.Identifier);
 				return result;
 			}
 			
@@ -1370,7 +1370,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					usingResult.AddChild (new CSharpTokenNode (Convert (blockStatement.StartLocation), 1), UsingStatement.Roles.LPar);
 					if (u.Variables != null) {
 						usingResult.AddChild (ConvertToType (u.Variables.TypeExpression), UsingStatement.Roles.Type);
-						usingResult.AddChild (new Identifier (u.Variables.Variable.Name, Convert (u.Variables.Variable.Location)), UsingStatement.Roles.Identifier);
+						usingResult.AddChild (Identifier.Create (u.Variables.Variable.Name, Convert (u.Variables.Variable.Location)), UsingStatement.Roles.Identifier);
 						var loc = LocationsBag.GetLocations (u.Variables);
 						if (loc != null)
 							usingResult.AddChild (new CSharpTokenNode (Convert (loc[1]), 1), ContinueStatement.Roles.Assign);
@@ -1516,7 +1516,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					result.AddChild (ConvertToType (blockVariableDeclaration.TypeExpression), FixedStatement.Roles.Type);
 					var varInit = new VariableInitializer ();
 					var initLocation = LocationsBag.GetLocations (blockVariableDeclaration);
-					varInit.AddChild (new Identifier (blockVariableDeclaration.Variable.Name, Convert (blockVariableDeclaration.Variable.Location)), VariableInitializer.Roles.Identifier);
+					varInit.AddChild (Identifier.Create (blockVariableDeclaration.Variable.Name, Convert (blockVariableDeclaration.Variable.Location)), VariableInitializer.Roles.Identifier);
 					if (blockVariableDeclaration.Initializer != null) {
 						if (initLocation != null)
 							varInit.AddChild (new CSharpTokenNode (Convert (location[0]), 1), VariableInitializer.Roles.Assign);
@@ -1531,7 +1531,7 @@ namespace ICSharpCode.NRefactory.CSharp
 							var init = new VariableInitializer ();
 							if (loc != null && loc.Count > 0)
 								result.AddChild (new CSharpTokenNode (Convert (loc [0]), 1), VariableInitializer.Roles.Comma);
-							init.AddChild (new Identifier (decl.Variable.Name, Convert (decl.Variable.Location)), VariableInitializer.Roles.Identifier);
+							init.AddChild (Identifier.Create (decl.Variable.Name, Convert (decl.Variable.Location)), VariableInitializer.Roles.Identifier);
 							if (decl.Initializer != null) {
 								if (loc != null && loc.Count > 1)
 									result.AddChild (new CSharpTokenNode (Convert (loc [1]), 1), VariableInitializer.Roles.Assign);
@@ -1580,7 +1580,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					
 					result.AddChild (ConvertToType (ctch.TypeExpression), CatchClause.Roles.Type);
 					if (ctch.Variable != null && !string.IsNullOrEmpty (ctch.Variable.Name))
-						result.AddChild (new Identifier (ctch.Variable.Name, Convert (ctch.Variable.Location)), CatchClause.Roles.Identifier);
+						result.AddChild (Identifier.Create (ctch.Variable.Name, Convert (ctch.Variable.Location)), CatchClause.Roles.Identifier);
 					
 					if (location != null)
 						result.AddChild (new CSharpTokenNode (Convert (location[1]), 1), CatchClause.Roles.RPar);
@@ -1639,7 +1639,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (foreachStatement.TypeExpr != null)
 					result.AddChild (ConvertToType (foreachStatement.TypeExpr), ForeachStatement.Roles.Type);
 				if (foreachStatement.Variable != null)
-					result.AddChild (new Identifier (foreachStatement.Variable.Name, Convert (foreachStatement.Variable.Location)), ForeachStatement.Roles.Identifier);
+					result.AddChild (Identifier.Create (foreachStatement.Variable.Name, Convert (foreachStatement.Variable.Location)), ForeachStatement.Roles.Identifier);
 				
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location [1]), "in".Length), ForeachStatement.Roles.InKeyword);
@@ -1704,7 +1704,7 @@ namespace ICSharpCode.NRefactory.CSharp
 
 			public override object Visit (LocalVariableReference localVariableReference)
 			{
-				return new Identifier (localVariableReference.Name, Convert (localVariableReference.Location));;
+				return Identifier.Create (localVariableReference.Name, Convert (localVariableReference.Location));;
 			}
 
 			public override object Visit (MemberAccess memberAccess)
@@ -1723,7 +1723,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					}
 				}
 				
-				result.AddChild (new Identifier (memberAccess.Name, Convert (memberAccess.Location)), MemberReferenceExpression.Roles.Identifier);
+				result.AddChild (Identifier.Create (memberAccess.Name, Convert (memberAccess.Location)), MemberReferenceExpression.Roles.Identifier);
 				
 				if (memberAccess.TypeArguments != null)  {
 					var location = LocationsBag.GetLocations (memberAccess);
@@ -1742,7 +1742,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				result.Target = new SimpleType (qualifiedAliasMember.alias, Convert (qualifiedAliasMember.Location));
 				result.IsDoubleColon = true;
 				var location = LocationsBag.GetLocations (qualifiedAliasMember);
-				result.AddChild (new Identifier (qualifiedAliasMember.Name, location != null ? Convert (location[0]) : AstLocation.Empty), MemberReferenceExpression.Roles.Identifier);
+				result.AddChild (Identifier.Create (qualifiedAliasMember.Name, location != null ? Convert (location[0]) : AstLocation.Empty), MemberReferenceExpression.Roles.Identifier);
 				return  new TypeReferenceExpression () { Type = result };
 			}
 			
@@ -1763,7 +1763,7 @@ namespace ICSharpCode.NRefactory.CSharp
 			public override object Visit (SimpleName simpleName)
 			{
 				var result = new IdentifierExpression ();
-				result.AddChild (new Identifier (simpleName.Name, Convert (simpleName.Location)), IdentifierExpression.Roles.Identifier);
+				result.AddChild (Identifier.Create (simpleName.Name, Convert (simpleName.Location)), IdentifierExpression.Roles.Identifier);
 				if (simpleName.TypeArguments != null)  {
 					var location = LocationsBag.GetLocations (simpleName);
 					if (location != null)
@@ -2073,7 +2073,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					if (p.TypeExpression != null) // lambdas may have no types (a, b) => ...
 						parameterDeclarationExpression.AddChild (ConvertToType (p.TypeExpression), ParameterDeclaration.Roles.Type);
 					if (p.Name != null)
-						parameterDeclarationExpression.AddChild (new Identifier (p.Name, Convert (p.Location)), ParameterDeclaration.Roles.Identifier);
+						parameterDeclarationExpression.AddChild (Identifier.Create (p.Name, Convert (p.Location)), ParameterDeclaration.Roles.Identifier);
 					if (p.HasDefaultValue) {
 						if (location != null)
 							parameterDeclarationExpression.AddChild (new CSharpTokenNode (Convert (location [1]), 1), ParameterDeclaration.Roles.Assign);
@@ -2097,7 +2097,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					// TODO: attributes
 //					if (arg.Variance != Variance.None)
 //						throw new NotImplementedException(); // TODO: variance
-					tp.AddChild (new Identifier (arg.Name, Convert (arg.Location)), InvocationExpression.Roles.Identifier);
+					tp.AddChild (Identifier.Create (arg.Name, Convert (arg.Location)), InvocationExpression.Roles.Identifier);
 					parent.AddChild (tp, InvocationExpression.Roles.TypeParameter);
 				}
 			}
@@ -2140,7 +2140,7 @@ namespace ICSharpCode.NRefactory.CSharp
 					var constraint = new Constraint ();
 					if (location != null)
 						constraint.AddChild (new CSharpTokenNode (Convert (location [0]), "where".Length), InvocationExpression.Roles.Keyword);
-					constraint.AddChild (new Identifier (c.TypeParameter.Value, Convert (c.TypeParameter.Location)), InvocationExpression.Roles.Identifier);
+					constraint.AddChild (Identifier.Create (c.TypeParameter.Value, Convert (c.TypeParameter.Location)), InvocationExpression.Roles.Identifier);
 					if (location != null && location.Count > 1)
 						constraint.AddChild (new CSharpTokenNode (Convert (location [1]), 1), Constraint.ColonRole);
 					foreach (var expr in c.ConstraintExpressions)
@@ -2154,7 +2154,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (arg is NamedArgument) {
 					var na = (NamedArgument)arg;
 					NamedArgumentExpression newArg = new NamedArgumentExpression();
-					newArg.AddChild (new Identifier (na.Name, Convert (na.Location)), NamedArgumentExpression.Roles.Identifier);
+					newArg.AddChild (Identifier.Create (na.Name, Convert (na.Location)), NamedArgumentExpression.Roles.Identifier);
 					
 					var loc = LocationsBag.GetLocations (na);
 					if (loc != null)
@@ -2251,7 +2251,7 @@ namespace ICSharpCode.NRefactory.CSharp
 						result.AddChild ((Expression)par.Expr.Accept (this), AnonymousTypeCreateExpression.Roles.Expression);
 					} else {
 						var namedArgument = new NamedArgumentExpression ();
-						namedArgument.AddChild (new Identifier (par.Name, Convert (par.Location)), AnonymousTypeCreateExpression.Roles.Identifier);
+						namedArgument.AddChild (Identifier.Create (par.Name, Convert (par.Location)), AnonymousTypeCreateExpression.Roles.Identifier);
 						namedArgument.AddChild (new CSharpTokenNode (Convert (location[0]), 1), AnonymousTypeCreateExpression.Roles.Assign);
 						namedArgument.AddChild ((Expression)par.Expr.Accept (this), AnonymousTypeCreateExpression.Roles.Expression);
 						result.AddChild (namedArgument, AnonymousTypeCreateExpression.Roles.Expression);
@@ -2659,7 +2659,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (queryStart.Expr == null) {
 					var intoClause = new QueryContinuationClause ();
 					intoClause.AddChild (new CSharpTokenNode (Convert (queryStart.Location), "into".Length), QueryContinuationClause.IntoKeywordRole);
-					intoClause.AddChild (new Identifier (queryStart.IntoVariable.Name, Convert(queryStart.IntoVariable.Location)), QueryContinuationClause.Roles.Identifier);
+					intoClause.AddChild (Identifier.Create (queryStart.IntoVariable.Name, Convert(queryStart.IntoVariable.Location)), QueryContinuationClause.Roles.Identifier);
 					return intoClause;
 				}
 				
@@ -2671,7 +2671,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (queryStart.IdentifierType != null)
 					fromClause.AddChild (ConvertToType (queryStart.IdentifierType), QueryFromClause.Roles.Type);
 				
-				fromClause.AddChild (new Identifier (queryStart.IntoVariable.Name, Convert(queryStart.IntoVariable.Location)), QueryFromClause.Roles.Identifier);
+				fromClause.AddChild (Identifier.Create (queryStart.IntoVariable.Name, Convert(queryStart.IntoVariable.Location)), QueryFromClause.Roles.Identifier);
 				
 				if (location != null)
 					fromClause.AddChild (new CSharpTokenNode (Convert (location[0]), "in".Length), QueryFromClause.InKeywordRole);
@@ -2689,7 +2689,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (queryStart.IdentifierType != null)
 					fromClause.AddChild (ConvertToType (queryStart.IdentifierType), QueryFromClause.Roles.Type);
 				
-				fromClause.AddChild (new Identifier (queryStart.IntoVariable.Name, Convert(queryStart.IntoVariable.Location)), QueryFromClause.Roles.Identifier);
+				fromClause.AddChild (Identifier.Create (queryStart.IntoVariable.Name, Convert(queryStart.IntoVariable.Location)), QueryFromClause.Roles.Identifier);
 				
 				if (location != null)
 					fromClause.AddChild (new CSharpTokenNode (Convert (location[0]), "in".Length), QueryFromClause.InKeywordRole);
@@ -2723,7 +2723,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				var location = LocationsBag.GetLocations (l);
 				
 				result.AddChild (new CSharpTokenNode (Convert (l.Location), "let".Length), QueryLetClause.Roles.Keyword);
-				result.AddChild (new Identifier (l.IntoVariable.Name, Convert (l.IntoVariable.Location)), Identifier.Roles.Identifier);
+				result.AddChild (Identifier.Create (l.IntoVariable.Name, Convert (l.IntoVariable.Location)), Identifier.Roles.Identifier);
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location[0]), 1), QueryLetClause.Roles.Assign);
 				result.AddChild ((Expression)l.Expr.Accept (this), QueryLetClause.Roles.Expression);
@@ -2746,7 +2746,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				var location = LocationsBag.GetLocations (join);
 				result.AddChild (new CSharpTokenNode (Convert (join.Location), "join".Length), QueryJoinClause.JoinKeywordRole);
 				
-				result.AddChild (new Identifier (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
+				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
 				
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location[0]), "in".Length), QueryJoinClause.InKeywordRole);
@@ -2770,7 +2770,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				var location = LocationsBag.GetLocations (join);
 				result.AddChild (new CSharpTokenNode (Convert (join.Location), "join".Length), QueryJoinClause.JoinKeywordRole);
 				
-				result.AddChild (new Identifier (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
+				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
 				
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location[0]), "in".Length), QueryJoinClause.InKeywordRole);
@@ -2789,7 +2789,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				if (location != null)
 					result.AddChild (new CSharpTokenNode (Convert (location[3]), "into".Length), QueryJoinClause.IntoKeywordRole);
 				
-				result.AddChild (new Identifier (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
+				result.AddChild (Identifier.Create (join.JoinVariable.Name, Convert (join.JoinVariable.Location)), Identifier.Roles.Identifier);
 				return result;
 			}
 			

ICSharpCode.NRefactory/CSharp/Parser/TypeSystemConvertVisitor.cs

@@ -637,7 +637,7 @@ namespace ICSharpCode.NRefactory.CSharp
 		{
 			DomRegion region = MakeRegion(attr);
 			ITypeReference type = ConvertType(attr.Type);
-			if (!attr.Type.GetChildByRole(AstNode.Roles.Identifier).IsVerbatim) {
+			if (!(attr.Type.GetChildByRole(AstNode.Roles.Identifier) is Identifier.VerbatimIdentifier)) {
 				// Try to add "Attribute" suffix, but only if the identifier
 				// (=last identifier in fully qualified name) isn't a verbatim identifier.
 				SimpleTypeOrNamespaceReference st = type as SimpleTypeOrNamespaceReference;