Use exception for invalid highlighting definitions instead of displaying a MessageBox.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/2.1@2523 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/BackendBindings/CSharpBinding/Project/Src/Project/VBToCSharpConverter.cs

@@ -42,7 +42,8 @@ namespace CSharpBinding
 		protected override void ConvertAst(CompilationUnit compilationUnit, List<ISpecial> specials)
 		{
 			PreprocessingDirective.VBToCSharp(specials);
-			compilationUnit.AcceptVisitor(new VBNetToCSharpConvertVisitor(), null);
+			compilationUnit.AcceptVisitor(new VBNetConstructsConvertVisitor(), null);
+			compilationUnit.AcceptVisitor(new ToCSharpConvertVisitor(), null);
 		}
 	}
 }

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

@@ -35,7 +35,8 @@ namespace VBNetBinding
 		protected override void ConvertAst(CompilationUnit compilationUnit, List<ISpecial> specials)
 		{
 			PreprocessingDirective.CSharpToVB(specials);
-			compilationUnit.AcceptVisitor(new CSharpToVBNetConvertVisitor(), null);
+			compilationUnit.AcceptVisitor(new CSharpConstructsVisitor(), null);
+			compilationUnit.AcceptVisitor(new ToVBNetConvertVisitor(), null);
 		}
 		
 		protected override void CopyProperties(IProject sourceProject, IProject targetProject)

src/Libraries/ICSharpCode.TextEditor/Project/ICSharpCode.TextEditor.csproj

@@ -55,6 +55,7 @@
     <Compile Include="Src\Document\DefaultDocument.cs" />
     <Compile Include="Src\Document\DocumentEventArgs.cs" />
     <Compile Include="Src\Document\DocumentFactory.cs" />
+    <Compile Include="Src\Document\HighlightingStrategy\HighlightingDefinitionInvalidException.cs" />
     <Compile Include="Src\Document\IDocument.cs" />
     <Compile Include="Src\Document\ISegment.cs" />
     <Compile Include="Src\Document\TextUtilities.cs" />

src/Libraries/ICSharpCode.TextEditor/Project/Resources/Patch-Mode.xshd

@@ -1,7 +1,6 @@
 <?xml version="1.0"?>
-<!-- syntaxdefinition for C/C++ 2001 by Andrea Paatz and Mike Krueger -->
 
-<SyntaxDefinition name = "Patch files" extensions = ".patch;.diff">
+<SyntaxDefinition name = "Patch" extensions = ".patch;.diff">
 	<!--<Digits name = "Digits" bold = "false" italic = "false" color = "DarkBlue"/>-->
 	
 	<RuleSets>

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/HighlightingStrategy/DefaultHighlightingStrategy.cs

@@ -156,8 +156,8 @@ namespace ICSharpCode.TextEditor.Document
 							}
 						}
 						if (!found) {
-							MessageBox.Show("The RuleSet " + aSpan.Rule + " could not be found in mode definition " + this.Name, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1);
 							aSpan.RuleSet = null;
+							throw new HighlightingDefinitionInvalidException("The RuleSet " + aSpan.Rule + " could not be found in mode definition " + this.Name);
 						}
 					} else {
 						aSpan.RuleSet = null;
@@ -166,7 +166,7 @@ namespace ICSharpCode.TextEditor.Document
 			}
 			
 			if (defaultRuleSet == null) {
-				MessageBox.Show("No default RuleSet is defined for mode definition " + this.Name, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1);
+				throw new HighlightingDefinitionInvalidException("No default RuleSet is defined for mode definition " + this.Name);
 			}
 		}
 		
@@ -179,8 +179,8 @@ namespace ICSharpCode.TextEditor.Document
 					if (highlighter != null) {
 						ruleSet.Highlighter = highlighter;
 					} else {
-						MessageBox.Show("The mode defintion " + ruleSet.Reference + " which is refered from the " + this.Name + " mode definition could not be found", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1);
 						ruleSet.Highlighter = this;
+						throw new HighlightingDefinitionInvalidException("The mode defintion " + ruleSet.Reference + " which is refered from the " + this.Name + " mode definition could not be found");
 					}
 				} else {
 					ruleSet.Highlighter = this;

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/HighlightingStrategy/HighlightingDefinitionInvalidException.cs

@@ -0,0 +1,37 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Mike Krüger" email="mike@icsharpcode.net"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.Runtime.Serialization;
+
+namespace ICSharpCode.TextEditor.Document
+{
+	/// <summary>
+	/// Indicates that the highlighting definition that was tried to load was invalid.
+	/// You get this exception only once per highlighting definition, after that the definition
+	/// is replaced with the default highlighter.
+	/// </summary>
+	[Serializable()]
+	public class HighlightingDefinitionInvalidException : Exception
+	{
+		public HighlightingDefinitionInvalidException() : base()
+		{
+		}
+		
+		public HighlightingDefinitionInvalidException(string message) : base(message)
+		{
+		}
+		
+		public HighlightingDefinitionInvalidException(string message, Exception innerException) : base(message, innerException)
+		{
+		}
+		
+		protected HighlightingDefinitionInvalidException(SerializationInfo info, StreamingContext context) : base(info, context)
+		{
+		}
+	}
+}

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/HighlightingStrategy/HighlightingDefinitionParser.cs

@@ -17,8 +17,6 @@ namespace ICSharpCode.TextEditor.Document
 {
 	public static class HighlightingDefinitionParser
 	{
-		static List<ValidationEventArgs> errors = null;
-
 		public static DefaultHighlightingStrategy Parse(SyntaxMode syntaxMode, XmlReader xmlReader)
 		{
 			return Parse(null, syntaxMode, xmlReader);
@@ -31,10 +29,16 @@ namespace ICSharpCode.TextEditor.Document
 			if (xmlReader == null)
 				throw new ArgumentNullException("xmlTextReader");
 			try {
+				List<ValidationEventArgs> errors = null;
 				XmlReaderSettings settings = new XmlReaderSettings();
 				Stream shemaStream = typeof(HighlightingDefinitionParser).Assembly.GetManifestResourceStream("ICSharpCode.TextEditor.Resources.Mode.xsd");
 				settings.Schemas.Add("", new XmlTextReader(shemaStream));
-				settings.Schemas.ValidationEventHandler += new ValidationEventHandler(ValidationHandler);
+				settings.Schemas.ValidationEventHandler += delegate(object sender, ValidationEventArgs args) {
+					if (errors == null) {
+						errors = new List<ValidationEventArgs>();
+					}
+					errors.Add(args);
+				};
 				settings.ValidationType = ValidationType.Schema;
 				XmlReader validatingReader = XmlReader.Create(xmlReader, settings);
 
@@ -47,7 +51,7 @@ namespace ICSharpCode.TextEditor.Document
 				if (doc.DocumentElement.HasAttribute("extends")) {
 					KeyValuePair<SyntaxMode, ISyntaxModeFileProvider> entry = HighlightingManager.Manager.FindHighlighterEntry(doc.DocumentElement.GetAttribute("extends"));
 					if (entry.Key == null) {
-						MessageBox.Show("Cannot find referenced highlighting source " + doc.DocumentElement.GetAttribute("extends"));
+						throw new HighlightingDefinitionInvalidException("Cannot find referenced highlighting source " + doc.DocumentElement.GetAttribute("extends"));
 					} else {
 						highlighter = Parse(highlighter, entry.Key, entry.Value.GetSyntaxModeFile(entry.Key));
 						if (highlighter == null) return null;
@@ -89,36 +93,18 @@ namespace ICSharpCode.TextEditor.Document
 				
 				xmlReader.Close();
 				
-				if(errors!=null) {
-					ReportErrors(syntaxMode.FileName);
-					errors = null;
-					return null;
+				if (errors != null) {
+					StringBuilder msg = new StringBuilder();
+					foreach (ValidationEventArgs args in errors) {
+						msg.AppendLine(args.Message);
+					}
+					throw new HighlightingDefinitionInvalidException(msg.ToString());
 				} else {
 					return highlighter;
 				}
 			} catch (Exception e) {
-				MessageBox.Show("Could not load mode definition file '" + syntaxMode.FileName + "'.\n" + e.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
-				return null;
-			}
-		}
-		
-		private static void ValidationHandler(object sender, ValidationEventArgs args)
-		{
-			if (errors == null) {
-				errors=new List<ValidationEventArgs>();
-			}
-			errors.Add(args);
-		}
-
-		private static void ReportErrors(string fileName)
-		{
-			StringBuilder msg = new StringBuilder();
-			msg.Append("Could not load mode definition file. Reason:\n\n");
-			foreach(ValidationEventArgs args in errors) {
-				msg.Append(args.Message);
-				msg.Append(Console.Out.NewLine);
+				throw new HighlightingDefinitionInvalidException("Could not load mode definition file '" + syntaxMode.FileName + "'.\n", e);
 			}
-			MessageBox.Show(msg.ToString(), "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1);
 		}
 	}
 }

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/HighlightingStrategy/HighlightingManager.cs

@@ -9,6 +9,7 @@ using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
+using System.Diagnostics;
 
 namespace ICSharpCode.TextEditor.Document
 {
@@ -17,7 +18,10 @@ namespace ICSharpCode.TextEditor.Document
 		ArrayList syntaxModeFileProviders = new ArrayList();
 		static HighlightingManager highlightingManager;
 		
+		// hash table from extension name to highlighting definition,
+		// OR from extension name to Pair SyntaxMode,ISyntaxModeFileProvider
 		Hashtable highlightingDefs = new Hashtable();
+		
 		Hashtable extensionsToName = new Hashtable();
 		
 		public Hashtable HighlightingDefinitions {
@@ -28,7 +32,7 @@ namespace ICSharpCode.TextEditor.Document
 		
 		public static HighlightingManager Manager {
 			get {
-				return highlightingManager;		
+				return highlightingManager;
 			}
 		}
 		
@@ -89,14 +93,20 @@ namespace ICSharpCode.TextEditor.Document
 		{
 			SyntaxMode              syntaxMode             = (SyntaxMode)entry.Key;
 			ISyntaxModeFileProvider syntaxModeFileProvider = (ISyntaxModeFileProvider)entry.Value;
-			
-			DefaultHighlightingStrategy highlightingStrategy = HighlightingDefinitionParser.Parse(syntaxMode, syntaxModeFileProvider.GetSyntaxModeFile(syntaxMode));
-			if (highlightingStrategy == null) {
-				highlightingStrategy = DefaultHighlighting;
+
+			DefaultHighlightingStrategy highlightingStrategy = null;
+			try {
+				highlightingStrategy = HighlightingDefinitionParser.Parse(syntaxMode, syntaxModeFileProvider.GetSyntaxModeFile(syntaxMode));
+				if (highlightingStrategy.Name != syntaxMode.Name) {
+					throw new HighlightingDefinitionInvalidException("The name specified in the .xshd '" + highlightingStrategy.Name + "' must be equal the syntax mode name '" + syntaxMode.Name + "'");
+				}
+			} finally {
+				if (highlightingStrategy == null) {
+					highlightingStrategy = DefaultHighlighting;
+				}
+				highlightingDefs[syntaxMode.Name] = highlightingStrategy;
+				highlightingStrategy.ResolveReferences();
 			}
-			highlightingDefs[syntaxMode.Name] = highlightingStrategy;
-			highlightingStrategy.ResolveReferences();
-			
 			return highlightingStrategy;
 		}
 		

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/HighlightingStrategy/SyntaxModes/FileSyntaxModeProvider.cs

@@ -46,8 +46,7 @@ namespace ICSharpCode.TextEditor.Document
 		{
 			string syntaxModeFile = Path.Combine(directory, syntaxMode.FileName);
 			if (!File.Exists(syntaxModeFile)) {
-				MessageBox.Show("Can't load highlighting definition " + syntaxModeFile + " (file not found)!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand, MessageBoxDefaultButton.Button1);
-				return null;
+				throw new HighlightingDefinitionInvalidException("Can't load highlighting definition " + syntaxModeFile + " (file not found)!");
 			}
 			return new XmlTextReader(File.OpenRead(syntaxModeFile));
 		}
@@ -70,8 +69,7 @@ namespace ICSharpCode.TextEditor.Document
 									                         extensions));
 									goto bailout;
 								default:
-									MessageBox.Show("Unknown root node in syntax highlighting file :" + reader.Name, "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand, MessageBoxDefaultButton.Button1);
-									goto bailout;
+									throw new HighlightingDefinitionInvalidException("Unknown root node in syntax highlighting file :" + reader.Name);
 							}
 						}
 					}

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/HighlightingStrategy/SyntaxModes/SyntaxMode.cs

@@ -71,8 +71,7 @@ namespace ICSharpCode.TextEditor.Document
 							case "SyntaxModes":
 								string version = reader.GetAttribute("version");
 								if (version != "1.0") {
-									MessageBox.Show("Unknown syntax mode file defininition with version " + version , "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand, MessageBoxDefaultButton.Button1);
-									return syntaxModes;
+									throw new HighlightingDefinitionInvalidException("Unknown syntax mode file defininition with version " + version);
 								}
 								break;
 							case "Mode":
@@ -81,8 +80,7 @@ namespace ICSharpCode.TextEditor.Document
 								                               reader.GetAttribute("extensions")));
 								break;
 							default:
-								MessageBox.Show("Unknown node in syntax mode file :" + reader.Name, "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand, MessageBoxDefaultButton.Button1);
-								return syntaxModes;
+								throw new HighlightingDefinitionInvalidException("Unknown node in syntax mode file :" + reader.Name);
 						}
 						break;
 				}

src/Libraries/ICSharpCode.TextEditor/Project/Src/Gui/TextEditorControlBase.cs

@@ -501,7 +501,11 @@ namespace ICSharpCode.TextEditor
 		protected virtual void OnReloadHighlighting(object sender, EventArgs e)
 		{
 			if (Document.HighlightingStrategy != null) {
-				Document.HighlightingStrategy = HighlightingStrategyFactory.CreateHighlightingStrategy(Document.HighlightingStrategy.Name);
+				try {
+					Document.HighlightingStrategy = HighlightingStrategyFactory.CreateHighlightingStrategy(Document.HighlightingStrategy.Name);
+				} catch (HighlightingDefinitionInvalidException ex) {
+					MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				}
 				OptionsChanged();
 			}
 		}

src/Main/Base/Project/Src/TextEditor/Commands/TextAreaContextmenuCommands.cs

@@ -56,13 +56,17 @@ namespace ICSharpCode.SharpDevelop.DefaultEditor.Commands
 					i.Checked = false;
 				}
 				item.Checked = true;
-				IHighlightingStrategy strat = HighlightingStrategyFactory.CreateHighlightingStrategy(item.Text);
-				if (strat == null) {
-					throw new Exception("Strategy can't be null");
-				}
-				control.Document.HighlightingStrategy = strat;
-				if (control is SharpDevelopTextAreaControl) {
-					((SharpDevelopTextAreaControl)control).InitializeAdvancedHighlighter();
+				try {
+					IHighlightingStrategy strat = HighlightingStrategyFactory.CreateHighlightingStrategy(item.Text);
+					if (strat == null) {
+						throw new Exception("Strategy can't be null");
+					}
+					control.Document.HighlightingStrategy = strat;
+					if (control is SharpDevelopTextAreaControl) {
+						((SharpDevelopTextAreaControl)control).InitializeAdvancedHighlighter();
+					}
+				} catch (HighlightingDefinitionInvalidException ex) {
+					MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
 				}
 				control.Refresh();
 			}

src/Main/Base/Project/Src/TextEditor/Gui/Editor/TextEditorDisplayBinding.cs

@@ -51,8 +51,13 @@ namespace ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor
 			
 			b2.textAreaControl.Dock = DockStyle.Fill;
 			b2.Load(fileName);
-			b2.textAreaControl.Document.HighlightingStrategy = HighlightingStrategyFactory.CreateHighlightingStrategyForFile(fileName);
-			b2.textAreaControl.InitializeAdvancedHighlighter();
+			try {
+				b2.textAreaControl.Document.HighlightingStrategy = HighlightingStrategyFactory.CreateHighlightingStrategyForFile(fileName);
+				b2.textAreaControl.InitializeAdvancedHighlighter();
+			} catch (HighlightingDefinitionInvalidException ex) {
+				b2.textAreaControl.Document.HighlightingStrategy = HighlightingStrategyFactory.CreateHighlightingStrategy();
+				MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
 			b2.textAreaControl.InitializeFormatter();
 			b2.textAreaControl.ActivateQuickClassBrowserOnDemand();
 			
@@ -64,8 +69,13 @@ namespace ICSharpCode.SharpDevelop.DefaultEditor.Gui.Editor
 			TextEditorDisplayBindingWrapper b2 = new TextEditorDisplayBindingWrapper();
 			
 			b2.textAreaControl.Document.TextContent = content;
-			b2.textAreaControl.Document.HighlightingStrategy = HighlightingStrategyFactory.CreateHighlightingStrategy(language);
-			b2.textAreaControl.InitializeAdvancedHighlighter();
+			try {
+				b2.textAreaControl.Document.HighlightingStrategy = HighlightingStrategyFactory.CreateHighlightingStrategy(language);
+				b2.textAreaControl.InitializeAdvancedHighlighter();
+			} catch (HighlightingDefinitionInvalidException ex) {
+				b2.textAreaControl.Document.HighlightingStrategy = HighlightingStrategyFactory.CreateHighlightingStrategy();
+				MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+			}
 			b2.textAreaControl.InitializeFormatter();
 			b2.textAreaControl.ActivateQuickClassBrowserOnDemand();
 			return b2;