Worked on C# -> VB converter.

Fixed SD2-1022: Delegates usage not converted correctly from C# to VB.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@2654 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/BackendBindings/VBNetBinding/Project/Src/MyNamespaceBuilder.cs

@@ -75,6 +75,20 @@ namespace VBNetBinding
 			switch (project.OutputType) {
 				case OutputType.WinExe:
 					c.BaseTypes.Add(CreateTypeRef(cu, "Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase"));
+					if (project.GetEvaluatedProperty("MyType") == "WindowsForms") {
+						c.Methods.Add(
+							new DefaultMethod(c, "Main") {
+								Modifiers = ModifierEnum.Internal | ModifierEnum.Static,
+								ReturnType = c.ProjectContent.SystemTypes.Void,
+								Parameters = new[] {
+									new DefaultParameter(
+										"args",
+										new ArrayReturnType(c.ProjectContent, c.ProjectContent.SystemTypes.String, 1),
+										DomRegion.Empty
+									)
+								}
+							});
+					}
 					break;
 				case OutputType.Exe:
 					c.BaseTypes.Add(CreateTypeRef(cu, "Microsoft.VisualBasic.ApplicationServices.ConsoleApplicationBase"));

src/AddIns/BackendBindings/VBNetBinding/Project/Src/Project/CSharpToVBConverter.cs

@@ -26,23 +26,58 @@ namespace VBNetBinding
 			}
 		}
 		
+		IList<string> defaultImports = new[] { "Microsoft.VisualBasic", "System" };
+		
+		protected override IProject CreateProject(string targetProjectDirectory, IProject sourceProject)
+		{
+			VBNetProject project = (VBNetProject)base.CreateProject(targetProjectDirectory, sourceProject);
+			IProjectItemListProvider provider = (IProjectItemListProvider)project;
+			foreach (string import in defaultImports) {
+				provider.AddProjectItem(new ImportProjectItem(project, import));
+			}
+			return project;
+		}
+		
 		protected override void ConvertFile(FileProjectItem sourceItem, FileProjectItem targetItem)
 		{
 			ConvertFile(sourceItem, targetItem, ".cs", ".vb", SupportedLanguage.CSharp, new VBNetOutputVisitor());
 		}
 		
+		string startupObject;
+		
 		protected override void ConvertAst(CompilationUnit compilationUnit, List<ISpecial> specials, FileProjectItem sourceItem)
 		{
 			PreprocessingDirective.CSharpToVB(specials);
 			IProjectContent pc = ParserService.GetProjectContent(sourceItem.Project) ?? ParserService.CurrentProjectContent;
-			compilationUnit.AcceptVisitor(new CSharpToVBNetConvertVisitor(pc, ParserService.GetParseInformation(sourceItem.FileName)), null);
+			CSharpToVBNetConvertVisitor visitor = new CSharpToVBNetConvertVisitor(pc, ParserService.GetParseInformation(sourceItem.FileName));
+			visitor.RootNamespaceToStrip = sourceItem.Project.RootNamespace;
+			visitor.DefaultImportsToRemove = defaultImports;
+			if (sourceItem.Project is MSBuildBasedProject) {
+				visitor.StartupObjectToMakePublic = startupObject;
+			}
+			compilationUnit.AcceptVisitor(visitor, null);
 		}
 		
 		protected override void CopyProperties(IProject sourceProject, IProject targetProject)
 		{
+			VBNetProject vbProject = (VBNetProject)targetProject;
 			base.CopyProperties(sourceProject, targetProject);
-			FixProperty((VBNetProject)targetProject, "DefineConstants",
+			FixProperty(vbProject, "DefineConstants",
 			            delegate(string v) { return v.Replace(';', ','); });
+			
+			// determine the StartupObject
+			startupObject = vbProject.GetEvaluatedProperty("StartupObject");
+			if (string.IsNullOrEmpty(startupObject)) {
+				IList<IClass> startupObjects = ICSharpCode.SharpDevelop.Gui.OptionPanels.ApplicationSettings.GetPossibleStartupObjects(sourceProject);
+				if (startupObjects.Count == 1) {
+					startupObject = startupObjects[0].FullyQualifiedName;
+					if (vbProject.OutputType == OutputType.WinExe) {
+						// we have to set StartupObject to prevent the VB compiler from choosing
+						// the generated Main method.
+						vbProject.SetProperty("StartupObject", startupObject);
+					}
+				}
+			}
 		}
 	}
 }

src/Libraries/NRefactory/Project/Src/Lexer/CSharp/Lexer.cs

@@ -21,6 +21,11 @@ namespace ICSharpCode.NRefactory.Parser.CSharp
 		void ReadPreProcessingDirective()
 		{
 			Location start = new Location(Col - 1, Line);
+			
+			// skip spaces between # and the directive
+			while (ReaderPeek() == ' ')
+				ReaderRead();
+			
 			bool canBeKeyword;
 			string directive = ReadIdent('#', out canBeKeyword);
 			string argument  = ReadToEndOfLine();

src/Libraries/NRefactory/Project/Src/Lexer/Special/PreProcessingDirective.cs

@@ -86,7 +86,7 @@ namespace ICSharpCode.NRefactory
 				return cmd;
 			}
 			set {
-				cmd = value;
+				cmd = value ?? string.Empty;
 			}
 		}
 		
@@ -95,7 +95,7 @@ namespace ICSharpCode.NRefactory
 				return arg;
 			}
 			set {
-				arg = value;
+				arg = value ?? string.Empty;
 			}
 		}
 		
@@ -109,8 +109,8 @@ namespace ICSharpCode.NRefactory
 		public PreprocessingDirective(string cmd, string arg, Location start, Location end)
 			: base(start, end)
 		{
-			this.cmd = cmd;
-			this.arg = arg;
+			this.Cmd = cmd;
+			this.Arg = arg;
 		}
 		
 		public override object AcceptVisitor(ISpecialVisitor visitor, object data)

src/Libraries/NRefactory/Project/Src/PrettyPrinter/AbstractOutputFormatter.cs

@@ -23,6 +23,8 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 		bool          doNewLine      = true;
 		AbstractPrettyPrintOptions prettyPrintOptions;
 		
+		public bool IsInMemberBody { get; set; }
+		
 		public int IndentationLevel {
 			get {
 				return indentationLevel;

src/Libraries/NRefactory/Project/Src/PrettyPrinter/IOutputAstVisitor.cs

@@ -43,6 +43,10 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 		string Text {
 			get;
 		}
+		bool IsInMemberBody {
+			get;
+			set;
+		}
 		void NewLine();
 		void Indent();
 		void PrintComment(Comment comment, bool forceWriteInPreviousBlock);

src/Libraries/NRefactory/Project/Src/PrettyPrinter/SpecialNodesInserter.cs

@@ -13,7 +13,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 {
 	public class SpecialOutputVisitor : ISpecialVisitor
 	{
-		IOutputFormatter formatter;
+		readonly IOutputFormatter formatter;
 		
 		public SpecialOutputVisitor(IOutputFormatter formatter)
 		{

src/Libraries/NRefactory/Project/Src/PrettyPrinter/VBNet/VBNetOutputFormatter.cs

@@ -51,6 +51,19 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			}
 		}
 		
+		public override void PrintPreprocessingDirective(PreprocessingDirective directive, bool forceWriteInPreviousBlock)
+		{
+			if (IsInMemberBody
+			    && (string.Equals(directive.Cmd, "#Region", StringComparison.InvariantCultureIgnoreCase)
+			        || string.Equals(directive.Cmd, "#End", StringComparison.InvariantCultureIgnoreCase)
+			        && directive.Arg.ToLowerInvariant().StartsWith("region")))
+			{
+				WriteLineInPreviousLine("'" + directive.Cmd + " " + directive.Arg, forceWriteInPreviousBlock);
+			} else {
+				base.PrintPreprocessingDirective(directive, forceWriteInPreviousBlock);
+			}
+		}
+		
 		public void PrintLineContinuation()
 		{
 			if (!LastCharacterIsWhiteSpace)

src/Libraries/NRefactory/Project/Src/PrettyPrinter/VBNet/VBNetOutputVisitor.cs

@@ -574,12 +574,14 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			outputFormatter.NewLine();
 			
 			if (!IsAbstract(propertyDeclaration)) {
+				outputFormatter.IsInMemberBody = true;
 				++outputFormatter.IndentationLevel;
 				exitTokenStack.Push(Tokens.Property);
 				TrackedVisit(propertyDeclaration.GetRegion, data);
 				TrackedVisit(propertyDeclaration.SetRegion, data);
 				exitTokenStack.Pop();
 				--outputFormatter.IndentationLevel;
+				outputFormatter.IsInMemberBody = false;
 				
 				outputFormatter.Indent();
 				outputFormatter.PrintToken(Tokens.End);
@@ -848,6 +850,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			outputFormatter.NewLine();
 			
 			if (!IsAbstract(methodDeclaration)) {
+				outputFormatter.IsInMemberBody = true;
 				BeginVisit(methodDeclaration.Body);
 				++outputFormatter.IndentationLevel;
 				exitTokenStack.Push(isSub ? Tokens.Sub : Tokens.Function);
@@ -866,6 +869,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 				}
 				outputFormatter.NewLine();
 				EndVisit(methodDeclaration.Body);
+				outputFormatter.IsInMemberBody = false;
 			}
 			return null;
 		}
@@ -895,6 +899,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			outputFormatter.PrintToken(Tokens.CloseParenthesis);
 			outputFormatter.NewLine();
 			
+			outputFormatter.IsInMemberBody = true;
 			++outputFormatter.IndentationLevel;
 			exitTokenStack.Push(Tokens.Sub);
 			
@@ -903,6 +908,7 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			TrackedVisit(constructorDeclaration.Body, data);
 			exitTokenStack.Pop();
 			--outputFormatter.IndentationLevel;
+			outputFormatter.IsInMemberBody = false;
 			
 			outputFormatter.Indent();
 			outputFormatter.PrintToken(Tokens.End);
@@ -2031,6 +2037,10 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 		{
 			int  op = 0;
 			switch (binaryOperatorExpression.Op) {
+				case BinaryOperatorType.Concat:
+					op = Tokens.ConcatString;
+					break;
+					
 				case BinaryOperatorType.Add:
 					op = Tokens.Plus;
 					break;
@@ -2047,6 +2057,10 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 					op = Tokens.Div;
 					break;
 					
+				case BinaryOperatorType.DivideInteger:
+					op = Tokens.DivInteger;
+					break;
+					
 				case BinaryOperatorType.Modulus:
 					op = Tokens.Mod;
 					break;
@@ -2100,13 +2114,11 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 					TrackedVisit(binaryOperatorExpression.Right, data);
 					return null;
 				case BinaryOperatorType.NullCoalescing:
-					outputFormatter.PrintText("IIf(");
+					outputFormatter.PrintText("If(");
 					TrackedVisit(binaryOperatorExpression.Left, data);
-					outputFormatter.PrintText(" Is Nothing, ");
-					TrackedVisit(binaryOperatorExpression.Right, data);
 					outputFormatter.PrintToken(Tokens.Comma);
 					outputFormatter.Space();
-					TrackedVisit(binaryOperatorExpression.Left, data);
+					TrackedVisit(binaryOperatorExpression.Right, data);
 					outputFormatter.PrintToken(Tokens.CloseParenthesis);
 					return null;
 				case BinaryOperatorType.LessThan:
@@ -2232,31 +2244,9 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 					break;
 				case AssignmentOperatorType.Add:
 					op = Tokens.PlusAssign;
-					if (IsEventHandlerCreation(assignmentExpression.Right)) {
-						outputFormatter.PrintToken(Tokens.AddHandler);
-						outputFormatter.Space();
-						TrackedVisit(assignmentExpression.Left, data);
-						outputFormatter.PrintToken(Tokens.Comma);
-						outputFormatter.Space();
-						outputFormatter.PrintToken(Tokens.AddressOf);
-						outputFormatter.Space();
-						TrackedVisit(GetEventHandlerMethod(assignmentExpression.Right), data);
-						return null;
-					}
 					break;
 				case AssignmentOperatorType.Subtract:
 					op = Tokens.MinusAssign;
-					if (IsEventHandlerCreation(assignmentExpression.Right)) {
-						outputFormatter.PrintToken(Tokens.RemoveHandler);
-						outputFormatter.Space();
-						TrackedVisit(assignmentExpression.Left, data);
-						outputFormatter.PrintToken(Tokens.Comma);
-						outputFormatter.Space();
-						outputFormatter.PrintToken(Tokens.AddressOf);
-						outputFormatter.Space();
-						TrackedVisit(GetEventHandlerMethod(assignmentExpression.Right), data);
-						return null;
-					}
 					break;
 				case AssignmentOperatorType.Multiply:
 					op = Tokens.TimesAssign;
@@ -2540,13 +2530,14 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 		
 		public override object TrackedVisitConditionalExpression(ConditionalExpression conditionalExpression, object data)
 		{
-			// No representation in VB.NET, but VB conversion is possible.
-			outputFormatter.PrintText("IIf");
+			outputFormatter.PrintText("If");
 			outputFormatter.PrintToken(Tokens.OpenParenthesis);
 			TrackedVisit(conditionalExpression.Condition, data);
 			outputFormatter.PrintToken(Tokens.Comma);
+			outputFormatter.Space();
 			TrackedVisit(conditionalExpression.TrueExpression, data);
 			outputFormatter.PrintToken(Tokens.Comma);
+			outputFormatter.Space();
 			TrackedVisit(conditionalExpression.FalseExpression, data);
 			outputFormatter.PrintToken(Tokens.CloseParenthesis);
 			return null;
@@ -2697,25 +2688,6 @@ namespace ICSharpCode.NRefactory.PrettyPrinter
 			}
 		}
 		
-		
-		static bool IsEventHandlerCreation(Expression expr)
-		{
-			if (expr is ObjectCreateExpression) {
-				ObjectCreateExpression oce = (ObjectCreateExpression) expr;
-				if (oce.Parameters.Count == 1) {
-					return oce.CreateType.SystemType.EndsWith("Handler");
-				}
-			}
-			return false;
-		}
-		
-		// can only get called if IsEventHandlerCreation returned true for the expression
-		static Expression GetEventHandlerMethod(Expression expr)
-		{
-			ObjectCreateExpression oce = (ObjectCreateExpression)expr;
-			return oce.Parameters[0];
-		}
-		
 		public override object TrackedVisitLambdaExpression(LambdaExpression lambdaExpression, object data)
 		{
 			throw new NotImplementedException();

src/Libraries/NRefactory/Project/Src/Visitors/ToVBNetConvertVisitor.cs

@@ -149,18 +149,6 @@ namespace ICSharpCode.NRefactory.Visitors
 			return null;
 		}
 		
-		static string GetMethodNameOfDelegateCreation(Expression expr)
-		{
-			string name = GetMemberNameOnThisReference(expr);
-			if (name != null)
-				return name;
-			ObjectCreateExpression oce = expr as ObjectCreateExpression;
-			if (oce != null && oce.Parameters.Count == 1) {
-				return GetMemberNameOnThisReference(oce.Parameters[0]);
-			}
-			return null;
-		}
-		
 		public override object VisitAnonymousMethodExpression(AnonymousMethodExpression anonymousMethodExpression, object data)
 		{
 			MethodDeclaration method = new MethodDeclaration {
@@ -179,21 +167,6 @@ namespace ICSharpCode.NRefactory.Visitors
 		
 		public override object VisitAssignmentExpression(AssignmentExpression assignmentExpression, object data)
 		{
-			if (assignmentExpression.Op == AssignmentOperatorType.Add
-			    || assignmentExpression.Op == AssignmentOperatorType.Subtract)
-			{
-				string methodName = GetMethodNameOfDelegateCreation(assignmentExpression.Right);
-				if (methodName != null && currentType != null) {
-					foreach (object c in currentType.Children) {
-						MethodDeclaration method = c as MethodDeclaration;
-						if (method != null && method.Name == methodName) {
-							// this statement is registering an event
-							assignmentExpression.Right = new AddressOfExpression(new IdentifierExpression(methodName));
-							break;
-						}
-					}
-				}
-			}
 			base.VisitAssignmentExpression(assignmentExpression, data);
 			if (assignmentExpression.Op == AssignmentOperatorType.Assign && !(assignmentExpression.Parent is ExpressionStatement)) {
 				AddInlineAssignHelper();

src/Libraries/NRefactory/Test/NRefactoryTests.csproj

@@ -144,7 +144,7 @@
     <Compile Include="Output\VBNet\VBNetOutputTest.cs" />
     <Compile Include="Output\VBNet\CSharpToVBConverterTest.cs" />
     <Compile Include="Output\CSharp\VBToCSharpConverterTest.cs" />
-    <Compile Include="Output\SpecialOutputVisitor.cs" />
+    <Compile Include="Output\SpecialOutputVisitorTest.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Project\NRefactory.csproj">

src/Libraries/NRefactory/Test/Output/SpecialOutputVisitorTest.cs

@@ -6,6 +6,7 @@
 // </file>
 
 using System;
+using System.Collections.Generic;
 using System.IO;
 using NUnit.Framework;
 using ICSharpCode.NRefactory.Parser;
@@ -23,6 +24,9 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			parser.Parse();
 			Assert.AreEqual("", parser.Errors.ErrorOutput);
 			CSharpOutputVisitor outputVisitor = new CSharpOutputVisitor();
+			outputVisitor.Options.IndentationChar = ' ';
+			outputVisitor.Options.TabSize = 2;
+			outputVisitor.Options.IndentSize = 2;
 			using (SpecialNodesInserter.Install(parser.Lexer.SpecialTracker.RetrieveSpecials(),
 			                                    outputVisitor)) {
 				outputVisitor.VisitCompilationUnit(parser.CompilationUnit, null);
@@ -38,6 +42,9 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			parser.Parse();
 			Assert.AreEqual("", parser.Errors.ErrorOutput);
 			VBNetOutputVisitor outputVisitor = new VBNetOutputVisitor();
+			outputVisitor.Options.IndentationChar = ' ';
+			outputVisitor.Options.TabSize = 2;
+			outputVisitor.Options.IndentSize = 2;
 			using (SpecialNodesInserter.Install(parser.Lexer.SpecialTracker.RetrieveSpecials(),
 			                                    outputVisitor)) {
 				outputVisitor.VisitCompilationUnit(parser.CompilationUnit, null);
@@ -53,8 +60,12 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			parser.Parse();
 			Assert.AreEqual("", parser.Errors.ErrorOutput);
 			VBNetOutputVisitor outputVisitor = new VBNetOutputVisitor();
-			using (SpecialNodesInserter.Install(parser.Lexer.SpecialTracker.RetrieveSpecials(),
-			                                    outputVisitor)) {
+			List<ISpecial> specials = parser.Lexer.SpecialTracker.RetrieveSpecials();
+			PreprocessingDirective.CSharpToVB(specials);
+			outputVisitor.Options.IndentationChar = ' ';
+			outputVisitor.Options.TabSize = 2;
+			outputVisitor.Options.IndentSize = 2;
+			using (SpecialNodesInserter.Install(specials, outputVisitor)) {
 				outputVisitor.VisitCompilationUnit(parser.CompilationUnit, null);
 			}
 			Assert.AreEqual("", outputVisitor.Errors.ErrorOutput);
@@ -80,7 +91,7 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			TestProgram("// before class\n" +
 			            "class A\n" +
 			            "{\n" +
-			            "\t// in class\n" +
+			            "  // in class\n" +
 			            "}\n" +
 			            "// after class");
 		}
@@ -91,7 +102,7 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			TestProgram("/* before class */\n" +
 			            "class A\n" +
 			            "{\n" +
-			            "\t/* in class */\n" +
+			            "  /* in class */\n" +
 			            "}\n" +
 			            "/* after class */");
 		}
@@ -104,9 +115,9 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			            "/* block comment before */\n" +
 			            "class A\n" +
 			            "{\n" +
-			            "\t/* in class */\n" +
-			            "\t// in class 2" +
-			            "\t/* in class 3 */\n" +
+			            "  /* in class */\n" +
+			            "  // in class 2" +
+			            "  /* in class 3 */\n" +
 			            "}\n" +
 			            "/* after class */\n" +
 			            "// after class 2\n" +
@@ -128,11 +139,11 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 		{
 			TestProgram("enum Test\n" +
 			            "{\n" +
-			            "\t// a\n" +
-			            "\tm1,\n" +
-			            "\t// b\n" +
-			            "\tm2\n" +
-			            "\t// c\n" +
+			            "  // a\n" +
+			            "  m1,\n" +
+			            "  // b\n" +
+			            "  m2\n" +
+			            "  // c\n" +
 			            "}\n" +
 			            "// d");
 		}
@@ -141,11 +152,11 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 		public void EnumVB()
 		{
 			TestProgramVB("Enum Test\n" +
-			              "\t' a\n" +
-			              "\tm1\n" +
-			              "\t' b\n" +
-			              "\tm2\n" +
-			              "\t' c\n" +
+			              "  ' a\n" +
+			              "  m1\n" +
+			              "  ' b\n" +
+			              "  m2\n" +
+			              "  ' c\n" +
 			              "End Enum\n" +
 			              "' d");
 		}
@@ -166,7 +177,7 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 		}
 		
 		[Test]
-		public void RegionInsideMethodVB()
+		public void CommentsInsideMethodVB()
 		{
 			TestProgramVB(@"Public Class Class1
   Private Function test(ByVal l As Integer, ByVal lvw As Integer) As Boolean
@@ -199,10 +210,10 @@ End Class");
 		{
 			TestProgramCS2VB("class A { [PreserveSig] public void B(// comment\nint c) {} }",
 			                 "Class A\n" +
-			                 "\t\t' comment\n" +
-			                 "\t<PreserveSig()> _\n" +
-			                 "\tPublic Sub B(ByVal c As Integer)\n" +
-			                 "\tEnd Sub\n" +
+			                 "    ' comment\n" +
+			                 "  <PreserveSig()> _\n" +
+			                 "  Public Sub B(ByVal c As Integer)\n" +
+			                 "  End Sub\n" +
 			                 "End Class");
 		}
 		
@@ -211,12 +222,29 @@ End Class");
 		{
 			TestProgram("class A\n" +
 			            "{\n" +
-			            "\t#if TEST\n" +
-			            "\t[MyAttribute()]\n" +
-			            "\t#endif\n" +
-			            "\tpublic int Field;\n" +
+			            "  #if TEST\n" +
+			            "  [MyAttribute()]\n" +
+			            "  #endif\n" +
+			            "  public int Field;\n" +
 			            "}\n" +
 			            "#end if");
 		}
+		
+		[Test]
+		public void RegionInsideMethodCS2VB()
+		{
+			TestProgramCS2VB("class A { void M() {\n" +
+			                 "  #region PP\n" +
+			                 "  return;" +
+			                 "  #endregion\n" +
+			                 "} }",
+			                 "Class A\n" +
+			                 "  Sub M()\n" +
+			                 "    '#Region \"PP\"\n" +
+			                 "    Return\n" +
+			                 "    '#End Region\n" +
+			                 "  End Sub\n" +
+			                 "End Class");
+		}
 	}
 }

src/Libraries/NRefactory/Test/Output/VBNet/CSharpToVBConverterTest.cs

@@ -148,20 +148,6 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			              "Next");
 		}
 		
-		[Test]
-		public void AddEventHandler()
-		{
-			TestStatement("this.button1.Click += new System.EventHandler(this.OnButton1Click);",
-			              "AddHandler Me.button1.Click, AddressOf Me.OnButton1Click");
-		}
-		
-		[Test]
-		public void RemoveEventHandler()
-		{
-			TestStatement("this.button1.Click -= new System.EventHandler(this.OnButton1Click);",
-			              "RemoveHandler Me.button1.Click, AddressOf Me.OnButton1Click");
-		}
-		
 		[Test]
 		public void RaiseEvent()
 		{
@@ -201,6 +187,7 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			              "End If");
 		}
 		
+		/*
 		[Test]
 		public void AnonymousMethod()
 		{
@@ -213,7 +200,6 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 			           "End Sub");
 		}
 		
-		/*
 		[Test, Ignore("NRefactory cannot guess the anonymous method's return type")]
 		public void AnonymousMethodInVarDeclaration()
 		{
@@ -227,19 +213,6 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 		}
 		 */
 		
-		[Test]
-		public void RegisterEvent()
-		{
-			TestStatement("someEvent += tmp2;",
-			              "AddHandler someEvent, AddressOf tmp2");
-			TestStatement("someEvent += this.tmp2;",
-			              "AddHandler someEvent, AddressOf tmp2");
-			TestStatement("someEvent += new SomeDelegate(tmp2);",
-			              "AddHandler someEvent, AddressOf tmp2");
-			TestStatement("someEvent += new SomeDelegate(this.tmp2);",
-			              "AddHandler someEvent, AddressOf tmp2");
-		}
-		
 		[Test]
 		public void StaticMethod()
 		{
@@ -346,7 +319,14 @@ namespace ICSharpCode.NRefactory.Tests.PrettyPrinter
 		public void NullCoalescing()
 		{
 			TestStatement("c = a ?? b;",
-			              "c = IIf(a Is Nothing, b, a)");
+			              "c = If(a, b)");
+		}
+		
+		[Test]
+		public void Ternary()
+		{
+			TestStatement("d = a ? b : c;",
+			              "d = If(a, b, c)");
 		}
 		
 		[Test]

src/Main/Base/Project/Src/Gui/Dialogs/OptionPanels/ProjectOptions/ApplicationSettings.cs

@@ -6,11 +6,13 @@
 // </file>
 
 using System;
+using System.Collections.Generic;
 using System.Drawing;
 using System.IO;
 using System.Windows.Forms;
 
 using ICSharpCode.Core;
+using ICSharpCode.SharpDevelop.Dom;
 using ICSharpCode.SharpDevelop.Project;
 
 namespace ICSharpCode.SharpDevelop.Gui.OptionPanels
@@ -47,6 +49,9 @@ namespace ICSharpCode.SharpDevelop.Gui.OptionPanels
 			
 			b = helper.BindString("startupObjectComboBox", "StartupObject", TextBoxEditMode.EditEvaluatedProperty);
 			b.RegisterLocationButton(locationButton);
+			foreach (IClass c in GetPossibleStartupObjects(project)) {
+				Get<ComboBox>("startupObject").Items.Add(c.FullyQualifiedName);
+			}
 			
 			b = helper.BindString("applicationIconComboBox", "ApplicationIcon", TextBoxEditMode.EditEvaluatedProperty);
 			Get<ComboBox>("applicationIcon").TextChanged += new EventHandler(ApplicationIconComboBoxTextChanged);
@@ -66,6 +71,22 @@ namespace ICSharpCode.SharpDevelop.Gui.OptionPanels
 			helper.AddConfigurationSelector(this);
 		}
 		
+		public static IList<IClass> GetPossibleStartupObjects(IProject project)
+		{
+			List<IClass> results = new List<IClass>();
+			IProjectContent pc = ParserService.GetProjectContent(project);
+			if (pc != null) {
+				foreach (IClass c in pc.Classes) {
+					foreach (IMethod m in c.Methods) {
+						if (m.IsStatic && m.Name == "Main") {
+							results.Add(c);
+						}
+					}
+				}
+			}
+			return results;
+		}
+		
 		void RefreshOutputNameTextBox(object sender, EventArgs e)
 		{
 			Get<TextBox>("outputName").Text = Get<TextBox>("assemblyName").Text + CompilableProject.GetExtension((OutputType)Get<ComboBox>("outputType").SelectedIndex);

src/Main/Base/Test/CodeConverterTests.cs

@@ -166,6 +166,78 @@ namespace ICSharpCode.SharpDevelop.Tests
 			                "End Sub");
 		}
 		
+		
+		[Test]
+		public void EventHandlerTest()
+		{
+			TestMemberCS2VB("public event EventHandler Click;" +
+			                "void T() {" +
+			                "  Click += T;" +
+			                "  Click -= this.T;" +
+			                "  Click += new EventHandler(T);" +
+			                "  Click += new EventHandler(this.T);" +
+			                "  EventHandler eh = new EventHandler(T);" +
+			                "  eh = T;" +
+			                "  eh += eh;" +
+			                "  eh -= eh;" +
+			                "  this.Click += eh;" +
+			                "}",
+			                "Public Event Click As EventHandler\n" +
+			                "Private Sub T()\n" +
+			                "  AddHandler Click, AddressOf T\n" +
+			                "  RemoveHandler Click, AddressOf Me.T\n" +
+			                "  AddHandler Click, New EventHandler(AddressOf T)\n" +
+			                "  AddHandler Click, New EventHandler(AddressOf Me.T)\n" +
+			                "  Dim eh As New EventHandler(AddressOf T)\n" +
+			                "  eh = AddressOf T\n" +
+			                "  eh = DirectCast([Delegate].Combine(eh, eh), EventHandler)\n" +
+			                "  eh = DirectCast([Delegate].Remove(eh, eh), EventHandler)\n" +
+			                "  AddHandler Me.Click, eh\n" +
+			                "End Sub");
+		}
+		
+		[Test]
+		public void CreateDelegateCS2VB()
+		{
+			TestProgramCS2VB("using System; using System.Text.RegularExpressions;\n" +
+			                 "class Test {\n" +
+			                 "  object M() {\n" +
+			                 "    return new MatchEvaluator(X);\n" +
+			                 "  }\n" +
+			                 "  string X(Match match) {}" +
+			                 "}",
+			                 "Imports System\n" +
+			                 "Imports System.Text.RegularExpressions\n" +
+			                 "Class Test\n" +
+			                 "  Private Function M() As Object\n" +
+			                 "    Return New MatchEvaluator(AddressOf X)\n" +
+			                 "  End Function\n" +
+			                 "  Private Function X(ByVal match As Match) As String\n" +
+			                 "  End Function\n" +
+			                 "End Class");
+		}
+		
+		[Test]
+		public void ImplicitlyCreateDelegateCS2VB()
+		{
+			TestProgramCS2VB("using System; using System.Text.RegularExpressions;\n" +
+			                 "class Test {\n" +
+			                 "  void M(Regex regex, string text) {\n" +
+			                 "    regex.Replace(text, X);\n" +
+			                 "  }\n" +
+			                 "  string X(Match match) {}" +
+			                 "}",
+			                 "Imports System\n" +
+			                 "Imports System.Text.RegularExpressions\n" +
+			                 "Class Test\n" +
+			                 "  Private Sub M(ByVal regex As Regex, ByVal text As String)\n" +
+			                 "    regex.Replace(text, AddressOf X)\n" +
+			                 "  End Sub\n" +
+			                 "  Private Function X(ByVal match As Match) As String\n" +
+			                 "  End Function\n" +
+			                 "End Class");
+		}
+		
 		[Test]
 		public void ReferenceEqualityAndValueEquality()
 		{
@@ -266,6 +338,25 @@ namespace ICSharpCode.SharpDevelop.Tests
 			                    "MyArray = (int[,])Microsoft.VisualBasic.CompilerServices.Utils.CopyArray(MyArray, new int[11, 11]);");
 		}
 		
+		[Test]
+		public void StringConcatWithException()
+		{
+			TestStatementsCS2VB("Exception ex;\n" +
+			                    "string a = \"Error: \" + ex + \"!\";",
+			                    "Dim ex As Exception\n" +
+			                    "Dim a As String = \"Error: \" & Convert.ToString(ex) & \"!\"\n");
+		}
+		
+		[Test]
+		public void PerformIntegerDivision()
+		{
+			TestStatementsCS2VB("int a = 5; int b = 2;\n" +
+			                    "int c = a / b;",
+			                    "Dim a As Integer = 5\n" +
+			                    "Dim b As Integer = 2\n" +
+			                    "Dim c As Integer = a \\ b\n");
+		}
+		
 		#region InterfaceImplementation
 		[Test]
 		public void InterfaceImplementation1()

src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/CSharpToVBNetConvertVisitor.cs

@@ -21,6 +21,9 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 		NRefactoryResolver _resolver;
 		ParseInformation _parseInfo;
 		IProjectContent _pc;
+		public string RootNamespaceToStrip { get; set; }
+		public string StartupObjectToMakePublic { get; set; }
+		public IList<string> DefaultImportsToRemove { get; set; }
 		
 		public CSharpToVBNetConvertVisitor(IProjectContent pc, ParseInformation parseInfo)
 		{
@@ -29,16 +32,54 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 			_parseInfo = parseInfo;
 		}
 		
+		public override object VisitCompilationUnit(CompilationUnit compilationUnit, object data)
+		{
+			base.VisitCompilationUnit(compilationUnit, data);
+			ToVBNetConvertVisitor v = new ToVBNetConvertVisitor();
+			compilationUnit.AcceptVisitor(v, data);
+			return null;
+		}
+		
 		IReturnType ResolveType(TypeReference typeRef)
 		{
 			return TypeVisitor.CreateReturnType(typeRef, _resolver);
 		}
 		
-		public override object VisitCompilationUnit(CompilationUnit compilationUnit, object data)
+		public override object VisitNamespaceDeclaration(NamespaceDeclaration namespaceDeclaration, object data)
 		{
-			base.VisitCompilationUnit(compilationUnit, data);
-			ToVBNetConvertVisitor v = new ToVBNetConvertVisitor();
-			compilationUnit.AcceptVisitor(v, data);
+			base.VisitNamespaceDeclaration(namespaceDeclaration, data);
+			if (RootNamespaceToStrip != null) {
+				if (namespaceDeclaration.Name == RootNamespaceToStrip) {
+					// remove namespace declaration
+					foreach (INode child in namespaceDeclaration.Children) {
+						child.Parent = namespaceDeclaration.Parent;
+						namespaceDeclaration.Parent.Children.Add(child);
+					}
+					RemoveCurrentNode();
+				} else if (namespaceDeclaration.Name.StartsWith(RootNamespaceToStrip + ".")) {
+					namespaceDeclaration.Name = namespaceDeclaration.Name.Substring(RootNamespaceToStrip.Length + 1);
+				}
+			}
+			return null;
+		}
+		
+		public override object VisitUsing(Using @using, object data)
+		{
+			base.VisitUsing(@using, data);
+			if (DefaultImportsToRemove != null && !@using.IsAlias) {
+				if (DefaultImportsToRemove.Contains(@using.Name)) {
+					RemoveCurrentNode();
+				}
+			}
+			return null;
+		}
+		
+		public override object VisitUsingDeclaration(UsingDeclaration usingDeclaration, object data)
+		{
+			base.VisitUsingDeclaration(usingDeclaration, data);
+			if (usingDeclaration.Usings.Count == 0) {
+				RemoveCurrentNode();
+			}
 			return null;
 		}
 		
@@ -66,6 +107,14 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 			}
 			IMethod currentMethod = _resolver.CallingMember as IMethod;
 			CreateInterfaceImplementations(currentMethod, methodDeclaration, methodDeclaration.InterfaceImplementations);
+			if (currentMethod != null && currentMethod.Name == "Main") {
+				if (currentMethod.DeclaringType.FullyQualifiedName == StartupObjectToMakePublic) {
+					if (currentMethod.IsStatic && currentMethod.IsPrivate) {
+						methodDeclaration.Modifier &= ~Modifiers.Private;
+						methodDeclaration.Modifier |= Modifiers.Internal;
+					}
+				}
+			}
 			return base.VisitMethodDeclaration(methodDeclaration, data);
 		}
 		
@@ -164,16 +213,36 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 						eventInvocation.Arguments));
 				}
 			}
-			return base.VisitExpressionStatement(expressionStatement, data);
+			base.VisitExpressionStatement(expressionStatement, data);
+			
+			HandleAssignmentStatement(expressionStatement.Expression as AssignmentExpression);
+			return null;
 		}
 		
 		public override object VisitBinaryOperatorExpression(BinaryOperatorExpression binaryOperatorExpression, object data)
 		{
+			base.VisitBinaryOperatorExpression(binaryOperatorExpression, data);
+			
 			if (_resolver.CompilationUnit == null)
-				return base.VisitBinaryOperatorExpression(binaryOperatorExpression, data);
+				return null;
 			
-			base.VisitBinaryOperatorExpression(binaryOperatorExpression, data);
-			if (binaryOperatorExpression.Op == BinaryOperatorType.Equality || binaryOperatorExpression.Op == BinaryOperatorType.InEquality) {
+			switch (binaryOperatorExpression.Op) {
+				case BinaryOperatorType.Equality:
+				case BinaryOperatorType.InEquality:
+					ConvertEqualityToReferenceEqualityIfRequired(binaryOperatorExpression);
+					break;
+				case BinaryOperatorType.Add:
+					ConvertArgumentsForStringConcatenationIfRequired(binaryOperatorExpression);
+					break;
+				case BinaryOperatorType.Divide:
+					ConvertDivisionToIntegerDivisionIfRequired(binaryOperatorExpression);
+					break;
+			}
+			return null;
+		}
+		
+		void ConvertEqualityToReferenceEqualityIfRequired(BinaryOperatorExpression binaryOperatorExpression)
+		{
 			// maybe we have to convert Equality operator to ReferenceEquality
 			ResolveResult left = _resolver.ResolveInternal(binaryOperatorExpression.Left, ExpressionContext.Default);
 			ResolveResult right = _resolver.ResolveInternal(binaryOperatorExpression.Right, ExpressionContext.Default);
@@ -197,7 +266,158 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 				}
 			}
 		}
+		
+		void ConvertArgumentsForStringConcatenationIfRequired(BinaryOperatorExpression binaryOperatorExpression)
+		{
+			ResolveResult left = _resolver.ResolveInternal(binaryOperatorExpression.Left, ExpressionContext.Default);
+			ResolveResult right = _resolver.ResolveInternal(binaryOperatorExpression.Right, ExpressionContext.Default);
+			
+			if (left != null && right != null) {
+				if (IsString(left.ResolvedType)) {
+					binaryOperatorExpression.Op = BinaryOperatorType.Concat;
+					if (NeedsExplicitConversionToString(right.ResolvedType)) {
+						binaryOperatorExpression.Right = CreateExplicitConversionToString(binaryOperatorExpression.Right);
+					}
+				} else if (IsString(right.ResolvedType)) {
+					binaryOperatorExpression.Op = BinaryOperatorType.Concat;
+					if (NeedsExplicitConversionToString(left.ResolvedType)) {
+						binaryOperatorExpression.Left = CreateExplicitConversionToString(binaryOperatorExpression.Left);
+					}
+				}
+			}
+		}
+		
+		void ConvertDivisionToIntegerDivisionIfRequired(BinaryOperatorExpression binaryOperatorExpression)
+		{
+			ResolveResult left = _resolver.ResolveInternal(binaryOperatorExpression.Left, ExpressionContext.Default);
+			ResolveResult right = _resolver.ResolveInternal(binaryOperatorExpression.Right, ExpressionContext.Default);
+			
+			if (left != null && right != null) {
+				if (IsInteger(left.ResolvedType) && IsInteger(right.ResolvedType)) {
+					binaryOperatorExpression.Op = BinaryOperatorType.DivideInteger;
+				}
+			}
+		}
+		
+		bool IsString(IReturnType rt)
+		{
+			return rt != null && rt.IsDefaultReturnType && rt.FullyQualifiedName == "System.String";
+		}
+		
+		bool IsInteger(IReturnType rt)
+		{
+			if (rt != null && rt.IsDefaultReturnType) {
+				switch (rt.FullyQualifiedName) {
+					case "System.Byte":
+					case "System.SByte":
+					case "System.Int16":
+					case "System.UInt16":
+					case "System.Int32":
+					case "System.UInt32":
+					case "System.Int64":
+					case "System.UInt64":
+						return true;
+				}
+			}
+			return false;
+		}
+		
+		bool NeedsExplicitConversionToString(IReturnType rt)
+		{
+			if (rt != null) {
+				if (rt.IsDefaultReturnType) {
+					if (rt.FullyQualifiedName == "System.Object"
+					    || !TypeReference.PrimitiveTypesVBReverse.ContainsKey(rt.FullyQualifiedName))
+					{
+						// object and non-primitive types need explicit conversion
+						return true;
+					} else {
+						// primitive types except object don't need explicit conversion
+						return false;
+					}
+				} else {
+					return true;
+				}
+			}
+			return false;
+		}
+		
+		Expression CreateExplicitConversionToString(Expression expr)
+		{
+			InvocationExpression ie = new InvocationExpression(
+				new FieldReferenceExpression(new IdentifierExpression("Convert"), "ToString"));
+			ie.Arguments.Add(expr);
+			return ie;
+		}
+		
+		public override object VisitIdentifierExpression(IdentifierExpression identifierExpression, object data)
+		{
+			base.VisitIdentifierExpression(identifierExpression, data);
+			if (_resolver.CompilationUnit == null)
+				return null;
+			
+			InvocationExpression parentIE = identifierExpression.Parent as InvocationExpression;
+			if (!(identifierExpression.Parent is AddressOfExpression)
+			    && (parentIE == null || parentIE.TargetObject != identifierExpression))
+			{
+				ResolveResult rr = _resolver.ResolveInternal(identifierExpression, ExpressionContext.Default);
+				if (rr is MethodResolveResult) {
+					ReplaceCurrentNode(new AddressOfExpression(identifierExpression));
+				}
+			}
+			return null;
+		}
+		
+		public override object VisitFieldReferenceExpression(FieldReferenceExpression fieldReferenceExpression, object data)
+		{
+			base.VisitFieldReferenceExpression(fieldReferenceExpression, data);
+			
+			if (_resolver.CompilationUnit == null)
+				return null;
+			
+			InvocationExpression parentIE = fieldReferenceExpression.Parent as InvocationExpression;
+			if (!(fieldReferenceExpression.Parent is AddressOfExpression)
+			    && (parentIE == null || parentIE.TargetObject != fieldReferenceExpression))
+			{
+				ResolveResult rr = _resolver.ResolveInternal(fieldReferenceExpression, ExpressionContext.Default);
+				if (rr is MethodResolveResult) {
+					ReplaceCurrentNode(new AddressOfExpression(fieldReferenceExpression));
+				}
+			}
+			
 			return null;
 		}
+		
+		void HandleAssignmentStatement(AssignmentExpression assignmentExpression)
+		{
+			if (_resolver.CompilationUnit == null || assignmentExpression == null)
+				return;
+			
+			if (assignmentExpression.Op == AssignmentOperatorType.Add || assignmentExpression.Op == AssignmentOperatorType.Subtract) {
+				ResolveResult rr = _resolver.ResolveInternal(assignmentExpression.Left, ExpressionContext.Default);
+				if (rr is MemberResolveResult && (rr as MemberResolveResult).ResolvedMember is IEvent) {
+					if (assignmentExpression.Op == AssignmentOperatorType.Add) {
+						ReplaceCurrentNode(new AddHandlerStatement(assignmentExpression.Left, assignmentExpression.Right));
+					} else {
+						ReplaceCurrentNode(new RemoveHandlerStatement(assignmentExpression.Left, assignmentExpression.Right));
+					}
+				} else if (rr.ResolvedType != null) {
+					IClass c = rr.ResolvedType.GetUnderlyingClass();
+					if (c.ClassType == ClassType.Delegate) {
+						InvocationExpression invocation = new InvocationExpression(
+							new FieldReferenceExpression(
+								new IdentifierExpression("Delegate"),
+								assignmentExpression.Op == AssignmentOperatorType.Add ? "Combine" : "Remove"));
+						invocation.Arguments.Add(assignmentExpression.Left);
+						invocation.Arguments.Add(assignmentExpression.Right);
+						
+						assignmentExpression.Op = AssignmentOperatorType.Assign;
+						assignmentExpression.Right = new CastExpression(
+							Refactoring.CodeGenerator.ConvertType(rr.ResolvedType, CreateContext()),
+							invocation, CastType.Cast);
+					}
+				}
+			}
+		}
 	}
 }