Fixed some code completion bugs.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@208 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/BackendBindings/CSharpBinding/Project/Src/Parser/ExpressionFinder.cs

@@ -255,6 +255,11 @@ namespace CSharpBinding.Parser
 							goto default;
 						}
 						break;
+					case '#':
+						if (!ReadToEOL(text, ref curOffset, ref offset)) {
+							return null;
+						}
+						break;
 					default:
 						outText.Append(ch);
 						++curOffset;
@@ -279,6 +284,8 @@ namespace CSharpBinding.Parser
 		
 		bool ReadChar(StringBuilder outText, string text, ref int curOffset)
 		{
+			if (curOffset > initialOffset)
+				return false;
 			char first = text[curOffset++];
 			outText.Append(first);
 			if (curOffset > initialOffset)
@@ -447,7 +454,7 @@ namespace CSharpBinding.Parser
 					break;
 				default:
 					if (IsDigit()) {
-						string digit = ReadDigit(ch);
+						ReadDigit(ch);
 						curTokenType = Digit;
 					} else if (IsIdentifierPart(ch)) {
 						string ident = ReadIdentifier(ch);
@@ -577,18 +584,19 @@ namespace CSharpBinding.Parser
 			return identifier;
 		}
 		
-		string ReadDigit(char ch)
+		void ReadDigit(char ch)
 		{
-			string digit = ch.ToString();
+			//string digit = ch.ToString();
 			while (Char.IsDigit(Peek()) || Peek() == '.') {
-				digit = GetNext() + digit;
+				GetNext();
+				//digit = GetNext() + digit;
 			}
-			return digit;
+			//return digit;
 		}
 		
 		bool IsIdentifierPart(char ch)
 		{
-			return Char.IsLetterOrDigit(ch) || ch == '_';
+			return Char.IsLetterOrDigit(ch) || ch == '_' || ch == '@';
 		}
 		#endregion
 		

src/AddIns/Misc/NUnitPad/Project/Src/Gui/NUnitPadContent.cs

@@ -127,7 +127,7 @@ namespace ICSharpCode.NUnitPad
 		void ProjectServiceEndBuild(object sender, EventArgs e)
 		{
 			if (autoLoadItems) {
-				testTreeView.Invoke(new ThreadStart(RefreshProjectAssemblies));
+				RefreshProjectAssemblies();
 			}
 		}
 		
@@ -159,9 +159,7 @@ namespace ICSharpCode.NUnitPad
 		
 		void ProjectServiceCombineClosed(object sender, EventArgs e)
 		{
-			if (testDomains.Count > 0) {
-				UnloadAppDomains();
-			}
+			UnloadAppDomains();
 		}
 		
 		void UnloadAppDomains()
@@ -177,10 +175,13 @@ namespace ICSharpCode.NUnitPad
 		
 		public void RunTests()
 		{
+			if (ProjectService.OpenSolution == null) return;
+			
 			if (!autoLoadItems) {
 				autoLoadItems = true;
 				RefreshProjectAssemblies();
 			}
+			
 			testTreeView.RunTests();
 		}
 		
@@ -188,13 +189,15 @@ namespace ICSharpCode.NUnitPad
 		{
 			UnloadAppDomains();
 			
+			if (ProjectService.OpenSolution == null) return;
+			
 			foreach (IProject project in ProjectService.OpenSolution.Projects) {
 				string outputAssembly = project.OutputAssemblyFullPath;
 				try {
 					TestSuiteBuilder builder = new TestSuiteBuilder();
 					Console.WriteLine("Try : " + outputAssembly);
 					Test testDomain = builder.Build(outputAssembly);
-					testTreeView.PrintTests(outputAssembly, testDomain);
+					testTreeView.PrintTests(outputAssembly, testDomain, project);
 				} catch (Exception e) {
 					testTreeView.PrintTestErrors(outputAssembly, e);
 				}

src/AddIns/Misc/NUnitPad/Project/Src/Gui/TestTreeView.cs

@@ -12,6 +12,7 @@ using System.Windows.Forms;
 
 using ICSharpCode.Core;
 using ICSharpCode.SharpDevelop.Gui;
+using ICSharpCode.SharpDevelop.Project;
 
 using NUnit.Core;
 using NUnit.Framework;
@@ -32,6 +33,22 @@ namespace ICSharpCode.NUnitPad
 			TestItemSelected       = 2,
 		}
 		
+		sealed class TestItemTag {
+			public readonly ITest Test;
+			public readonly IProject Project;
+			public TestItemTag(ITest test, IProject project) {
+				this.Test = test;
+				this.Project = project;
+			}
+			public void Run(EventListener listener) {
+				if (Test is Test)
+					(Test as Test).Run(listener);
+			}
+			public Position GetPosition() {
+				return ParserService.GetProjectContent(Project).GetPosition(Test.FullName.Replace('+', '.'));
+			}
+		}
+		
 		protected TestTreeViewState internalState = TestTreeViewState.Nothing;
 
 		public System.Enum InternalState {
@@ -50,10 +67,10 @@ namespace ICSharpCode.NUnitPad
 				if (treeView.SelectedNode == null) {
 					return false;
 				}
-				ITest test = treeView.SelectedNode.Tag as ITest;
+				TestItemTag test = treeView.SelectedNode.Tag as TestItemTag;
 				if (test != null) {
 					
-					Position position = ParserService.CurrentProjectContent.GetPosition(test.FullName.Replace('+', '.'));
+					Position position = test.GetPosition();
 					return position != null && position.Cu != null;
 				}
 				return false;
@@ -65,7 +82,7 @@ namespace ICSharpCode.NUnitPad
 				if (treeView.SelectedNode == null) {
 					return false;
 				}
-				ITest test = treeView.SelectedNode.Tag as ITest;
+				TestItemTag test = treeView.SelectedNode.Tag as TestItemTag;
 				return test != null;
 			}
 		}
@@ -144,26 +161,26 @@ namespace ICSharpCode.NUnitPad
 			treeView.Nodes.Add(assemblyNode);
 		}
 		
-		public void PrintTests(string assembly, Test test)
+		public void PrintTests(string assembly, Test test, IProject project)
 		{
 			TreeNode assemblyNode = new TreeNode(Path.GetFileName(assembly));
-			assemblyNode.Tag = test;
+			assemblyNode.Tag = new TestItemTag(test, project);
 			treeView.Nodes.Add(assemblyNode);
 			if (test != null) {
-				AddTests(assemblyNode, test);
+				AddTests(assemblyNode, test, project);
 			}
 			assemblyNode.Expand();
 		}
 		
-		public void AddTests(TreeNode node, ITest test)
+		public void AddTests(TreeNode node, ITest test, IProject project)
 		{
 			foreach (ITest childTest in test.Tests) {
 				TreeNode newNode = new TreeNode(childTest.Name);
 				treeNodeHash[childTest.UniqueName] = newNode;
 				newNode.ImageIndex = newNode.SelectedImageIndex = 0;
-				newNode.Tag = childTest;
+				newNode.Tag = new TestItemTag(childTest, project);
 				if (childTest.IsSuite) {
-					AddTests(newNode, childTest);
+					AddTests(newNode, childTest, project);
 					node.Expand();
 				}
 				node.Nodes.Add(newNode);
@@ -173,10 +190,10 @@ namespace ICSharpCode.NUnitPad
 		public void GotoDefinition()
 		{
 			if (treeView.SelectedNode != null) {
-				ITest test = treeView.SelectedNode.Tag as ITest;
-				if (test != null) {
+				TestItemTag testTag = treeView.SelectedNode.Tag as TestItemTag;
+				if (testTag != null) {
 					
-					Position position = ParserService.CurrentProjectContent.GetPosition(test.FullName.Replace('+', '.'));
+					Position position = testTag.GetPosition();
 					
 					if (position != null && position.Cu != null) {
 						
@@ -203,7 +220,7 @@ namespace ICSharpCode.NUnitPad
 			TreeNode selectedNode = treeView.SelectedNode;
 			
 			if (selectedNode != null) {
-				Test test = selectedNode.Tag as Test;
+				TestItemTag test = selectedNode.Tag as TestItemTag;
 				if (test != null) {
 					test.Run(this);
 				} else {
@@ -211,7 +228,7 @@ namespace ICSharpCode.NUnitPad
 				}
 			} else {
 				foreach (TreeNode node in treeView.Nodes) {
-					Test test = node.Tag as Test;
+					TestItemTag test = node.Tag as TestItemTag;
 					if (test != null) {
 						test.Run(this);
 					} else {

src/Main/Base/Project/Src/Dom/IClass.cs

@@ -105,7 +105,10 @@ namespace ICSharpCode.SharpDevelop.Dom
 		
 		List<IClass> GetAccessibleTypes(IClass callingClass);
 		
-		//IMember SearchMember(string memberName);
+		/// <summary>
+		/// Searches the member with the specified name. Returns the first member/overload found.
+		/// </summary>
+		IMember SearchMember(string memberName, LanguageProperties language);
 		
 		/// <summary>Return true if the specified class is a base class of this class; otherwise return false.</summary>
 		/// <remarks>Returns false when possibleBaseClass is null.</remarks>

src/Main/Base/Project/Src/Dom/Implementations/DefaultClass.cs

@@ -304,57 +304,42 @@ namespace ICSharpCode.SharpDevelop.Dom
 			return false;
 		}
 		
-		/*
-		public IMember SearchMember(string memberName)
+		/// <summary>
+		/// Searches the member with the specified name. Returns the first member/overload found.
+		/// </summary>
+		public IMember SearchMember(string memberName, LanguageProperties language)
 		{
 			if (memberName == null || memberName.Length == 0) {
 				return null;
 			}
-			foreach (IField f in Fields) {
-				if (f.Name == memberName) {
-					return f;
-				}
-			}
+			StringComparer cmp = language.NameComparer;
 			foreach (IProperty p in Properties) {
-				if (p.Name == memberName) {
+				if (cmp.Equals(p.Name, memberName)) {
 					return p;
 				}
 			}
-			foreach (IIndexer i in Indexer) {
-				if (i.Name == memberName) {
-					return i;
-				}
-			}
 			foreach (IEvent e in Events) {
-				if (e.Name == memberName) {
+				if (cmp.Equals(e.Name, memberName)) {
 					return e;
 				}
 			}
-			foreach (IMethod m in Methods) {
-				if (m.Name == memberName) {
-					return m;
+			foreach (IField f in Fields) {
+				if (cmp.Equals(f.Name, memberName)) {
+					return f;
 				}
 			}
-			if (ClassType == ClassType.Interface) {
-				foreach (string baseType in BaseTypes) {
-					int line = -1;
-					int col = -1;
-					if (Region != null) {
-						line = Region.BeginLine;
-						col = Region.BeginColumn;
-					}
-					IClass c = ProjectContent.SearchType(baseType, this, line, col);
-					if (c != null) {
-						return c.SearchMember(memberName);
-					}
+			foreach (IIndexer i in Indexer) {
+				if (cmp.Equals(i.Name, memberName)) {
+					return i;
+				}
+			}
+			foreach (IMethod m in Methods) {
+				if (cmp.Equals(m.Name, memberName)) {
+					return m;
 				}
-			} else {
-				IClass c = BaseClass;
-				return c.SearchMember(memberName);
 			}
 			return null;
 		}
-		 */
 		
 		public IClass GetInnermostClass(int caretLine, int caretColumn)
 		{

src/Main/Base/Project/Src/Dom/Implementations/DefaultUsing.cs

@@ -1,4 +1,4 @@
-// <file>
+// <file>
 //     <copyright see="prj:///doc/copyright.txt"/>
 //     <license see="prj:///doc/license.txt"/>
 //     <owner name="Mike Krüger" email="mike@icsharpcode.net"/>
@@ -52,9 +52,10 @@ namespace ICSharpCode.SharpDevelop.Dom
 		{
 			foreach (KeyValuePair<string, string> entry in aliases) {
 				string aliasString = entry.Key;
-				// TODO: case insensitive: partitialNamespaceName.ToLower().StartsWith(aliasString.ToLower())
-				if (partitialNamespaceName.StartsWith(aliasString)) {
-					if (aliasString.Length >= 0) {
+				if (projectContent.Language.NameComparer.Equals(partitialNamespaceName, aliasString))
+					return entry.Value;
+				if (partitialNamespaceName.Length > aliasString.Length) {
+					if (projectContent.Language.NameComparer.Equals(partitialNamespaceName.Substring(0, aliasString.Length + 1), aliasString + ".")) {
 						string nsName = nsName = String.Concat(entry.Value, partitialNamespaceName.Remove(0, aliasString.Length));
 						if (projectContent.NamespaceExists(nsName)) {
 							return nsName;
@@ -62,26 +63,23 @@ namespace ICSharpCode.SharpDevelop.Dom
 					}
 				}
 			}
+			if (projectContent.Language.ImportNamespaces) {
+				foreach (string str in usings) {
+					string possibleNamespace = String.Concat(str, ".", partitialNamespaceName);
+					if (projectContent.NamespaceExists(possibleNamespace))
+						return possibleNamespace;
+				}
+			}
 			return null;
 		}
 		
 		public IClass SearchType(string partitialTypeName)
 		{
-			foreach (string str in usings) {
-				string possibleType = String.Concat(str, ".", partitialTypeName);
-				IClass c = projectContent.GetClass(possibleType);
-				if (c != null) {
-					return c;
-				}
-			}
-			
 			foreach (KeyValuePair<string, string> entry in aliases) {
 				string aliasString = entry.Key;
-				// TODO: case insensitive:  : partitialTypeName.ToLower().StartsWith(aliasString.ToLower())
-				if (partitialTypeName.StartsWith(aliasString)) {
-					string className = null;
-					if (aliasString.Length > 0) {
-						className = String.Concat(entry.Value, partitialTypeName.Remove(0, aliasString.Length));
+				if (partitialTypeName.Length > aliasString.Length) {
+					if (projectContent.Language.NameComparer.Equals(partitialTypeName.Substring(0, aliasString.Length + 1), aliasString + ".")) {
+						string className = String.Concat(entry.Value, partitialTypeName.Remove(0, aliasString.Length));
 						IClass c = projectContent.GetClass(className);
 						if (c != null) {
 							return c;
@@ -89,12 +87,39 @@ namespace ICSharpCode.SharpDevelop.Dom
 					}
 				}
 			}
+			if (projectContent.Language.ImportNamespaces) {
+				foreach (string str in usings) {
+					IClass c = projectContent.GetClass(str + "." + partitialTypeName);
+					if (c != null) {
+						return c;
+					}
+				}
+			} else {
+				int pos = partitialTypeName.IndexOf('.');
+				string className, subClassName;
+				if (pos < 0) {
+					className = partitialTypeName;
+					subClassName = null;
+				} else {
+					className = partitialTypeName.Substring(0, pos);
+					subClassName = partitialTypeName.Substring(pos + 1);
+				}
+				foreach (string str in usings) {
+					IClass c = projectContent.GetClass(str + "." + className);
+					if (c != null) {
+						c = projectContent.GetClass(str + "." + partitialTypeName);
+						if (c != null) {
+							return c;
+						}
+					}
+				}
+			}
 			return null;
 		}
 		
 		public override string ToString()
 		{
-			StringBuilder builder = new StringBuilder("[AbstractUsing: ");
+			StringBuilder builder = new StringBuilder("[DefaultUsing: ");
 			foreach (string str in usings) {
 				builder.Append(str);
 				builder.Append(", ");

src/Main/Base/Project/Src/Dom/LanguageProperties.cs

@@ -22,6 +22,17 @@ namespace ICSharpCode.SharpDevelop.Dom
 			{
 				return member.IsStatic || !showStatic;
 			}
+
+			public override bool ImportNamespaces {
+				get {
+					return true;
+				}
+			}
+
+			public override string ToString()
+			{
+				return "[LanguageProperties: VB.NET]";
+			}
 		}
 		
 		StringComparer nameComparer;
@@ -36,10 +47,27 @@ namespace ICSharpCode.SharpDevelop.Dom
 				return nameComparer;
 			}
 		}
-		
+
+		/// <summary>
+		/// Gets if namespaces can be imported (i.e. Imports System, Dim a As Collections.ArrayList)
+		/// </summary>
+		public virtual bool ImportNamespaces {
+			get {
+				return false;
+			}
+		}
+
 		public virtual bool ShowMember(IMember member, bool showStatic)
 		{
 			return member.IsStatic == showStatic;
 		}
+
+		public override string ToString()
+		{
+			if (GetType() == typeof(LanguageProperties) && nameComparer == StringComparer.InvariantCulture)
+				return "[LanguageProperties: C#]";
+			else
+				return "[" + base.ToString() + "]";
+		}
 	}
 }

src/Main/Base/Project/Src/Services/ParserService/DefaultProjectContent.cs

@@ -24,11 +24,11 @@ namespace ICSharpCode.Core
 {
 	public class DefaultProjectContent : IProjectContent
 	{
-		List<IProjectContent>      referencedContents = new List<IProjectContent>();
+		List<IProjectContent> referencedContents = new List<IProjectContent>();
 		
 		List<Dictionary<string, IClass>> classLists = new List<Dictionary<string, IClass>>();
-		Hashtable                  namespaces         = new Hashtable();
-		protected XmlDoc           xmlDoc             = new XmlDoc();
+		List<Dictionary<string, NamespaceStruct>> namespaces = new List<Dictionary<string, NamespaceStruct>>();
+		protected XmlDoc xmlDoc = new XmlDoc();
 		
 		public List<Dictionary<string, IClass>> ClassLists {
 			get {
@@ -39,7 +39,28 @@ namespace ICSharpCode.Core
 			}
 		}
 		
-		Dictionary<string, IClass> GetClasses(LanguageProperties language)
+		protected List<Dictionary<string, NamespaceStruct>> Namespaces {
+			get {
+				if (namespaces.Count == 0) {
+					namespaces.Add(new Dictionary<string, NamespaceStruct>(language.NameComparer));
+				}
+				return namespaces;
+			}
+		}
+		
+		protected struct NamespaceStruct
+		{
+			public readonly List<IClass> Classes;
+			public readonly List<string> SubNamespaces;
+			
+			public NamespaceStruct(string name) // struct must have a parameter
+			{
+				this.Classes = new List<IClass>();
+				this.SubNamespaces = new List<string>();
+			}
+		}
+		
+		protected Dictionary<string, IClass> GetClasses(LanguageProperties language)
 		{
 			for (int i = 0; i < classLists.Count; ++i) {
 				if (classLists[i].Comparer == language.NameComparer)
@@ -59,6 +80,26 @@ namespace ICSharpCode.Core
 			return d;
 		}
 		
+		protected Dictionary<string, NamespaceStruct> GetNamespaces(LanguageProperties language)
+		{
+			for (int i = 0; i < namespaces.Count; ++i) {
+				if (namespaces[i].Comparer == language.NameComparer)
+					return namespaces[i];
+			}
+			Dictionary<string, NamespaceStruct> d;
+			if (namespaces.Count > 0) {
+				Dictionary<string, NamespaceStruct> oldList = namespaces[0];
+				d = new Dictionary<string, NamespaceStruct>(oldList.Count, language.NameComparer);
+				foreach (KeyValuePair<string, NamespaceStruct> pair in oldList) {
+					d.Add(pair.Key, pair.Value);
+				}
+			} else {
+				d = new Dictionary<string, NamespaceStruct>(language.NameComparer);
+			}
+			namespaces.Add(d);
+			return d;
+		}
+		
 		public XmlDoc XmlDoc {
 			get {
 				return xmlDoc;
@@ -130,14 +171,14 @@ namespace ICSharpCode.Core
 			xmlDoc.Dispose();
 		}
 		
-		public Hashtable AddClassToNamespaceList(IClass addClass)
+		public void AddClassToNamespaceList(IClass addClass)
 		{
 			lock (namespaces) {
-				return AddClassToNamespaceListInternal(addClass);
+				AddClassToNamespaceListInternal(addClass);
 			}
 		}
 		
-		protected Hashtable AddClassToNamespaceListInternal(IClass addClass)
+		protected void AddClassToNamespaceListInternal(IClass addClass)
 		{
 			foreach (Dictionary<string, IClass> classes in ClassLists) {
 				classes[addClass.FullyQualifiedName] = addClass;
@@ -146,29 +187,75 @@ namespace ICSharpCode.Core
 			if (nSpace == null) {
 				nSpace = String.Empty;
 			}
-			
-			Hashtable cur = namespaces;
-			
-			if (nSpace.Length > 0) {
-				string[] path = nSpace.Split('.');
-				for (int i = 0; i < path.Length; ++i) {
-					object curPath   = cur[path[i]];
-					if (curPath == null) {
-						Hashtable hashTable = new Hashtable();
-						cur[path[i]] = curPath = hashTable;
-					} else {
-						if (!(curPath is Hashtable)) {
-							return null;
-						}
-					}
-					cur = (Hashtable)curPath;
+			CreateNamespace(nSpace);
+			List<IClass> classList = GetNamespaces(this.language)[nSpace].Classes;
+			for (int i = 0; i < classList.Count; i++) {
+				if (classList[i].FullyQualifiedName == addClass.FullyQualifiedName) {
+					classList[i] = addClass;
+					return;
 				}
 			}
-			
-			string name = addClass.Name == null ? "" : addClass.Name;
-			
-			cur[name] = addClass;
-			return cur;
+			classList.Add(addClass);
+		}
+		
+		void CreateNamespace(string nSpace)
+		{
+			Dictionary<string, NamespaceStruct> dict = GetNamespaces(this.language);
+			if (dict.ContainsKey(nSpace))
+				return;
+			NamespaceStruct namespaceStruct = new NamespaceStruct(nSpace);
+			dict.Add(nSpace, namespaceStruct);
+			// use the same namespaceStruct for all dictionaries
+			foreach (Dictionary<string, NamespaceStruct> otherDict in namespaces) {
+				if (otherDict == dict) continue;
+				otherDict.Add(nSpace, namespaceStruct);
+			}
+			if (nSpace.Length == 0)
+				return;
+			// add to parent namespace
+			int pos = nSpace.LastIndexOf('.');
+			string parent;
+			string subNs;
+			if (pos < 0) {
+				parent = "";
+				subNs = nSpace;
+			} else {
+				parent = nSpace.Substring(0, pos);
+				subNs = nSpace.Substring(pos + 1);
+			}
+			CreateNamespace(parent);
+			dict[parent].SubNamespaces.Add(subNs);
+		}
+		
+		/// <summary>
+		/// Removes the specified namespace from all namespace lists if the namespace is empty.
+		/// </summary>
+		void RemoveEmptyNamespace(string nSpace)
+		{
+			if (nSpace == null || nSpace.Length == 0) return;
+			Dictionary<string, NamespaceStruct> dict = GetNamespaces(this.language);
+			if (!dict.ContainsKey(nSpace))
+				return;
+			// remove only if really empty
+			if (dict[nSpace].Classes.Count > 0 || dict[nSpace].SubNamespaces.Count > 0)
+				return;
+			// remove the namespace from all dictionaries
+			foreach (Dictionary<string, NamespaceStruct> anyDict in namespaces) {
+				anyDict.Remove(nSpace);
+			}
+			// remove the namespace from parent's SubNamespaces list
+			int pos = nSpace.LastIndexOf('.');
+			string parent;
+			string subNs;
+			if (pos < 0) {
+				parent = "";
+				subNs = nSpace;
+			} else {
+				parent = nSpace.Substring(0, pos);
+				subNs = nSpace.Substring(pos + 1);
+			}
+			dict[parent].SubNamespaces.Remove(subNs);
+			RemoveEmptyNamespace(parent); // remove parent if also empty
 		}
 		
 		public void UpdateCompilationUnit(ICompilationUnit oldUnit, ICompilationUnit parserOutput, string fileName, bool updateCommentTags)
@@ -178,26 +265,61 @@ namespace ICSharpCode.Core
 			}
 			
 			lock (namespaces) {
+				ICompilationUnit cu = (ICompilationUnit)parserOutput;
+				
 				if (oldUnit != null) {
-					RemoveClasses(oldUnit);
+					RemoveClasses(oldUnit, cu);
 				}
 				
-				ICompilationUnit cu = (ICompilationUnit)parserOutput;
 				foreach (IClass c in cu.Classes) {
 					AddClassToNamespaceListInternal(c);
 				}
 			}
 		}
 		
-		void RemoveClasses(ICompilationUnit cu)
+		void RemoveClasses(ICompilationUnit oldUnit, ICompilationUnit newUnit)
 		{
-			if (cu != null) {
-				foreach (IClass c in cu.Classes) {
-					foreach (Dictionary<string, IClass> classes in ClassLists) {
-						classes.Remove(c.FullyQualifiedName);
+			foreach (IClass c in oldUnit.Classes) {
+				bool found = false;
+				foreach (IClass c2 in newUnit.Classes) {
+					if (c.FullyQualifiedName == c2.FullyQualifiedName) {
+						found = true;
+						break;
 					}
 				}
-				// TODO: remove classes from namespace lists
+				if (!found) {
+					RemoveClass(c);
+				}
+			}
+		}
+		
+		void RemoveClass(IClass @class)
+		{
+			string nSpace = @class.Namespace;
+			if (nSpace == null) {
+				nSpace = String.Empty;
+			}
+			RemoveClass(@class.FullyQualifiedName, nSpace);
+		}
+		
+		void RemoveClass(string fullyQualifiedName, string nSpace)
+		{
+			foreach (Dictionary<string, IClass> classes in ClassLists) {
+				classes.Remove(fullyQualifiedName);
+			}
+			
+			
+			
+			// Remove class from namespace lists
+			List<IClass> classList = GetNamespaces(this.language)[nSpace].Classes;
+			for (int i = 0; i < classList.Count; i++) {
+				if (classList[i].FullyQualifiedName == fullyQualifiedName) {
+					classList.RemoveAt(i);
+					break;
+				}
+			}
+			if (classList.Count == 0) {
+				RemoveEmptyNamespace(nSpace);
 			}
 		}
 		
@@ -209,7 +331,6 @@ namespace ICSharpCode.Core
 		
 		public IClass GetClass(string typeName, LanguageProperties language, bool lookInReferences)
 		{
-//			Console.WriteLine("GetClass({0}) is known:{1}", typeName, classes.ContainsKey(typeName));
 			Dictionary<string, IClass> classes = GetClasses(language);
 			if (classes.ContainsKey(typeName)) {
 				return classes[typeName];
@@ -245,46 +366,33 @@ namespace ICSharpCode.Core
 			return null;
 		}
 		
-		public ArrayList GetNamespaceContents(string subNameSpace)
+		public ArrayList GetNamespaceContents(string nameSpace)
 		{
 			ArrayList namespaceList = new ArrayList();
-			AddNamespaceContents(namespaceList, subNameSpace, language, true);
+			AddNamespaceContents(namespaceList, nameSpace, language, true);
 			return namespaceList;
 		}
 		
-		public void AddNamespaceContents(ArrayList list, string subNameSpace, LanguageProperties language, bool lookInReferences)
+		/// <summary>
+		/// Adds the contents of the specified <paramref name="nameSpace"/> to the <paramref name="list"/>.
+		/// </summary>
+		public void AddNamespaceContents(ArrayList list, string nameSpace, LanguageProperties language, bool lookInReferences)
 		{
-			if (subNameSpace == null) {
+			if (nameSpace == null) {
 				return;
 			}
 			
 			if (lookInReferences) {
 				foreach (IProjectContent content in referencedContents) {
-					content.AddNamespaceContents(list, subNameSpace, language, false);
+					content.AddNamespaceContents(list, nameSpace, language, false);
 				}
 			}
 			
-			Hashtable cur = namespaces;
-			
-			if (subNameSpace.Length > 0) {
-				string[] path = subNameSpace.Split('.');
-				for (int i = 0; i < path.Length; ++i) {
-					if (!(cur[path[i]] is Hashtable)) {
-						// namespace does not exist in this project content
-						return;
-					}
-					cur = (Hashtable)cur[path[i]];
-				}
-			}
-			
-			foreach (DictionaryEntry entry in cur) {
-				if (entry.Value is Hashtable) {
-					if (!list.Contains(entry.Key))
-						list.Add(entry.Key);
-				} else {
-					if (!list.Contains(entry.Value))
-						list.Add(entry.Value);
-				}
+			Dictionary<string, NamespaceStruct> dict = GetNamespaces(language);
+			if (dict.ContainsKey(nameSpace)) {
+				NamespaceStruct ns = dict[nameSpace];
+				list.AddRange(ns.Classes);
+				list.AddRange(ns.SubNamespaces);
 			}
 		}
 		
@@ -307,21 +415,12 @@ namespace ICSharpCode.Core
 				}
 			}
 			
-			string[] path = name.Split('.');
-			Hashtable cur = namespaces;
-			for (int i = 0; i < path.Length; ++i) {
-				if (!(cur[path[i]] is Hashtable)) {
-					return false;
-				}
-				cur = (Hashtable)cur[path[i]];
-			}
-			return true;
+			return GetNamespaces(language).ContainsKey(name);
 		}
 		
 		
 		public string SearchNamespace(string name, ICompilationUnit unit, int caretLine, int caretColumn)
 		{
-//			Console.WriteLine("SearchNamespace({0})", name);
 			if (NamespaceExists(name)) {
 				return name;
 			}
@@ -350,7 +449,6 @@ namespace ICSharpCode.Core
 		
 		public IClass SearchType(string name, IClass curType, ICompilationUnit unit, int caretLine, int caretColumn)
 		{
-//			Console.WriteLine("SearchType({0})", name);
 			if (name == null || name.Length == 0) {
 				return null;
 			}
@@ -376,6 +474,16 @@ namespace ICSharpCode.Core
 					// remove class name again to try next namespace
 					curnamespace.Length -= name.Length;
 				}
+				
+				if (name.IndexOf('.') < 0) {
+					// Try inner classes of parent classes
+					while ((curType = curType.BaseClass) != null) {
+						foreach (IClass innerClass in curType.InnerClasses) {
+							if (language.NameComparer.Equals(innerClass.Name, name))
+								return innerClass;
+						}
+					}
+				}
 			}
 			if (unit != null) {
 				// Combine name with usings
@@ -391,114 +499,29 @@ namespace ICSharpCode.Core
 			return null;
 		}
 		
-		/*
-		public ArrayList ListMembers(ArrayList members, IClass curType, IClass callingClass, bool showStatic)
-		{
-//			Console.WriteLine("ListMembers()");
-			DateTime now = DateTime.Now;
-			
-			// enums must be handled specially, because there are several things defined we don't want to show
-			// and enum members have neither the modifier nor the modifier public
-			if (curType.ClassType == ClassType.Enum) {
-				foreach (IField f in curType.Fields) {
-					if (f.IsLiteral) {
-						members.Add(f);
-					}
-				}
-				ListMembers(members, GetClass("System.Enum"), callingClass, showStatic);
-				return members;
-			}
-			
-			bool isClassInInheritanceTree = callingClass.IsTypeInInheritanceTree(curType);
-			
-			if (showStatic) {
-				foreach (IClass c in curType.InnerClasses) {
-					if (c.IsAccessible(callingClass, isClassInInheritanceTree)) {
-						members.Add(c);
-					}
-				}
-			}
-			
-			foreach (IProperty p in curType.Properties) {
-				if (p.MustBeShown(callingClass, showStatic, isClassInInheritanceTree)) {
-					members.Add(p);
-				}
-			}
-			
-			foreach (IMethod m in curType.Methods) {
-				if (m.MustBeShown(callingClass, showStatic, isClassInInheritanceTree)) {
-					members.Add(m);
-				}
-			}
-			
-			foreach (IEvent e in curType.Events) {
-				if (e.MustBeShown(callingClass, showStatic, isClassInInheritanceTree)) {
-					members.Add(e);
-				}
-			}
-			
-			foreach (IField f in curType.Fields) {
-				if (f.MustBeShown(callingClass, showStatic, isClassInInheritanceTree)) {
-					members.Add(f);
-				}
-			}
-			
-			if (curType.ClassType == ClassType.Interface && !showStatic) {
-				foreach (string s in curType.BaseTypes) {
-					IClass baseClass = SearchType(s, curType, curType.Region != null ? curType.Region.BeginLine : -1, curType.Region != null ? curType.Region.BeginColumn : -1);
-					if (baseClass != null && baseClass.ClassType == ClassType.Interface) {
-						ListMembers(members, baseClass, callingClass, showStatic);
-					}
-				}
-			} else {
-				IClass baseClass = curType.BaseClass;
-				if (baseClass != null) {
-					ListMembers(members, baseClass, callingClass, showStatic);
-				}
-			}
-			
-			return members;
-		}
-		 */
-		
+		/// <summary>
+		/// Gets the position of a member in this project content (not a referenced one).
+		/// </summary>
+		/// <param name="fullMemberName">Fully qualified member name (always case sensitive).</param>
 		public Position GetPosition(string fullMemberName)
 		{
-			string[] name = fullMemberName.Split(new char[] {'.'});
-			string curName = name[0];
-			int i = 1;
-			while (i < name.Length && NamespaceExists(curName)) {
-				curName += '.' + name[i];
-				++i;
-			}
-			Debug.Assert(i <= name.Length);
-			IClass curClass = GetClass(curName);
-			if (curClass == null) {
-				return new Position(null, -1, -1);
-			}
-			ICompilationUnit cu = curClass.CompilationUnit;
-			while (i < name.Length) {
-				List<IClass> innerClasses = curClass.InnerClasses;
-				foreach (IClass c in innerClasses) {
-					if (c.Name == name[i]) {
-						curClass = c;
-						break;
+			IClass curClass = GetClass(fullMemberName, LanguageProperties.CSharp, false);
+			if (curClass != null) {
+				return new Position(curClass.CompilationUnit, curClass.Region != null ? curClass.Region.BeginLine : -1, curClass.Region != null ? curClass.Region.BeginColumn : -1);
+			}
+			int pos = fullMemberName.LastIndexOf('.');
+			if (pos > 0) {
+				string className = fullMemberName.Substring(0, pos);
+				string memberName = fullMemberName.Substring(pos + 1);
+				curClass = GetClass(className, LanguageProperties.CSharp, false);
+				if (curClass != null) {
+					IMember member = curClass.SearchMember(memberName, LanguageProperties.CSharp);
+					if (member != null) {
+						return new Position(curClass.CompilationUnit, member.Region != null ? member.Region.BeginLine : -1, member.Region != null ? member.Region.BeginColumn : -1);
 					}
 				}
-				if (curClass.Name != name[i]) {
-					break;
-				}
-				++i;
-			}
-			if (i >= name.Length) {
-				return new Position(cu, curClass.Region != null ? curClass.Region.BeginLine : -1, curClass.Region != null ? curClass.Region.BeginColumn : -1);
-			}
-			return new Position(cu, -1, -1);
-			// TODO: reimplement this
-			/*IMember member = curClass.SearchMember(name[i]);
-			if (member == null || member.Region == null) {
-				return new Position(cu, -1, -1);
 			}
-			return new Position(cu, member.Region.BeginLine, member.Region.BeginColumn);*/
+			return new Position(null, -1, -1);
 		}
 		#endregion
 	}

src/Main/Base/Project/Src/Services/ParserService/IProjectContent.cs

@@ -43,15 +43,18 @@ namespace ICSharpCode.Core
 		
 		string GetXmlDocumentation(string memberTag);
 		
-		Hashtable AddClassToNamespaceList(IClass addClass);
+		void AddClassToNamespaceList(IClass addClass);
 		void UpdateCompilationUnit(ICompilationUnit oldUnit, ICompilationUnit parserOutput, string fileName, bool updateCommentTags);
 		
 		IClass GetClass(string typeName);
 		bool NamespaceExists(string name);
-		ArrayList GetNamespaceContents(string subNameSpace);
+		ArrayList GetNamespaceContents(string nameSpace);
 		
 		IClass GetClass(string typeName, LanguageProperties language, bool lookInReferences);
 		bool NamespaceExists(string name, LanguageProperties language, bool lookInReferences);
+		/// <summary>
+		/// Adds the contents of the specified <paramref name="subNameSpace"/> to the <paramref name="list"/>.
+		/// </summary>
 		void AddNamespaceContents(ArrayList list, string subNameSpace, LanguageProperties language, bool lookInReferences);
 		
 		string SearchNamespace(string name, ICompilationUnit unit, int caretLine, int caretColumn);

src/Main/Base/Test/NRefactoryResolverTests.cs

@@ -614,7 +614,7 @@ class Activator {
 		{
 			// using an import in this way is not possible in C#
 			string program = @"using System;
-class A {
+class TestClass {
 	void Test() {
 		Collections.ArrayList a;
 		
@@ -625,8 +625,7 @@ class A {
 			Assert.IsNull(result, "Collections.ArrayList should not resolve");
 			LocalResolveResult local = Resolve(program, "a", 5) as LocalResolveResult;
 			Assert.IsNotNull(local, "a should resolve to a local variable");
-			Assert.AreEqual("Collections.ArrayList", local.ResolvedType.FullyQualifiedName,
-			                "the full type should not be resolved");
+			Assert.IsNull(local.ResolvedType, "the full type should not be resolved");
 		}
 		
 		[Test]
@@ -634,10 +633,10 @@ class A {
 		{
 			// using an import this way IS possible in VB.NET
 			string program = @"Imports System
-Class A
+Class TestClass
 	Sub Test()
 		Dim a As Collections.ArrayList
-	
+		
 	End Sub
 End Class
 ";
@@ -653,8 +652,8 @@ End Class
 		[Test]
 		public void ImportAliasTest()
 		{
-			string program = @"using System.Collections = COL;
-class A {
+			string program = @"using COL = System.Collections;
+class TestClass {
 	void Test() {
 		COL.ArrayList a;
 		
@@ -674,7 +673,7 @@ class A {
 		public void ImportAliasNamespaceResolveTest()
 		{
 			NamespaceResolveResult ns;
-			string program = "using System.Collections = COL;\r\nclass A {\r\n}\r\n";
+			string program = "using COL = System.Collections;\r\nclass A {\r\n}\r\n";
 			ns = Resolve(program, "COL", 3) as NamespaceResolveResult;
 			Assert.AreEqual("System.Collections", ns.Name, "COL");
 			ns = Resolve(program, "COL.Generic", 3) as NamespaceResolveResult;

src/Main/Base/Test/SearchClassTests.cs

@@ -23,7 +23,10 @@ namespace ICSharpCode.SharpDevelop.Tests
 			pc.ReferencedContents.Add(ProjectContentRegistry.GetMscorlibContent());
 			pc.Language = language;
 			DefaultCompilationUnit cu = new DefaultCompilationUnit(pc);
-			cu.Usings.Add(CreateUsing(pc, "System"));
+			if (language == LanguageProperties.VBNet)
+				cu.Usings.Add(CreateUsing(pc, "syStEm"));
+			else
+				cu.Usings.Add(CreateUsing(pc, "System"));
 			return cu;
 		}
 		
@@ -37,25 +40,39 @@ namespace ICSharpCode.SharpDevelop.Tests
 		IClass SearchType(string type)
 		{
 			ICompilationUnit cu = Prepare(LanguageProperties.CSharp);
-			return cu.ProjectContent.SearchType(type, null, 1, 1);
+			IClass c = cu.ProjectContent.SearchType(type, null, cu, 1, 1);
+			Assert.IsNotNull(c, type + "not found");
+			return c;
 		}
 		
 		IClass SearchTypeVB(string type)
 		{
 			ICompilationUnit cu = Prepare(LanguageProperties.VBNet);
-			return cu.ProjectContent.SearchType(type, null, 1, 1);
+			IClass c = cu.ProjectContent.SearchType(type, null, cu, 1, 1);
+			Assert.IsNotNull(c, type + "not found");
+			return c;
 		}
-		
-		string SearchNamespace(string @namespace)
+
+		void CheckNamespace(string @namespace, string className)
 		{
-			ICompilationUnit cu = Prepare(LanguageProperties.CSharp);
-			return cu.ProjectContent.SearchNamespace(@namespace, null, 1, 1);
+			CheckNamespace(@namespace, className, LanguageProperties.CSharp);
 		}
-		
-		string SearchNamespaceVB(string @namespace)
+
+		void CheckNamespaceVB(string @namespace, string className)
 		{
-			ICompilationUnit cu = Prepare(LanguageProperties.VBNet);
-			return cu.ProjectContent.SearchNamespace(@namespace, null, 1, 1);
+			CheckNamespace(@namespace, className, LanguageProperties.VBNet);
+		}
+
+		void CheckNamespace(string @namespace, string className, LanguageProperties language)
+		{
+			ICompilationUnit cu = Prepare(language);
+			string ns = cu.ProjectContent.SearchNamespace(@namespace, cu, 1, 1);
+			Assert.IsNotNull(ns, @namespace + " not found");
+			foreach (object o in cu.ProjectContent.GetNamespaceContents(ns)) {
+				IClass c = o as IClass;
+				if (c != null && c.Name == className)
+					return;
+			}
 		}
 		#endregion
 		
@@ -74,13 +91,13 @@ namespace ICSharpCode.SharpDevelop.Tests
 		[Test]
 		public void SearchFullyQualifiedNamespace()
 		{
-			Assert.AreEqual("System.Collections.Generic", SearchNamespace("System.Collections.Generic"));
+			CheckNamespace("System.Collections.Generic", "KeyNotFoundException");
 		}
 		
 		[Test]
 		public void SearchFullyQualifiedNamespaceVB()
 		{
-			Assert.AreEqual("System.Collections.Generic", SearchNamespace("SyStem.COllEctions.GeNEric"));
+			CheckNamespaceVB("SyStem.COllEctions.GeNEric", "KeyNotFoundException");
 		}
 		
 		[Test]
@@ -92,7 +109,35 @@ namespace ICSharpCode.SharpDevelop.Tests
 		[Test]
 		public void SearchEnvironmentVB()
 		{
-			Assert.AreEqual("System.Environment", SearchType("EnVIroNmEnt").FullyQualifiedName);
+			Assert.AreEqual("System.Environment", SearchTypeVB("EnVIroNmEnt").FullyQualifiedName);
+		}
+
+		[Test]
+		public void SearchArrayList()
+		{
+			ICompilationUnit cu = Prepare(LanguageProperties.CSharp);
+			IClass c = cu.ProjectContent.SearchType("Collections.ArrayList", null, cu, 1, 1);
+			Assert.IsNull(c, "Namespaces should not be imported in C#");
+		}
+
+		[Test]
+		public void SearchArrayListVB()
+		{
+			Assert.AreEqual("System.Collections.ArrayList", SearchTypeVB("CoLLections.ArrAyLiSt").FullyQualifiedName);
+		}
+
+		[Test]
+		public void SearchNestedNamespace()
+		{
+			ICompilationUnit cu = Prepare(LanguageProperties.CSharp);
+			string ns = cu.ProjectContent.SearchNamespace("Collections.Generic", cu, 1, 1);
+			Assert.IsNull(ns, "Nested namespaces should not be found in C#");
+		}
+
+		[Test]
+		public void SearchNestedNamespaceVB()
+		{
+			CheckNamespaceVB("COllEctions.GeNEric", "KeyNotFoundException");
 		}
 	}
 }