Implemented re-parsing when switching the project configuration.

TODOnewNR.txt

@@ -22,14 +22,55 @@ Stuff that was renamed/moved:
 	IReturnType -> ITypeReference (unresolved) or IType (resolved)
 	Location -> TextLocation in ICSharpCode.NRefactory
 	TextLocation -> moved to ICSharpCode.NRefactory
-	ParserService -> SD.ParserService
 
 Functionality changes:
-	The result of a parser run (ParseInformation) now may contain a fully parsed AST.
-	The ParserService may cache such full ASTs, but may also drop them from memory at any time.
-	This will be implemented by keeping the last N accessed files in the cache. (currently we just keep the caches around forever)
-	Every parse information also contains an IParsedFile instance with the type system information.
-	The IParsedFile is stored permanently (both in ParserService and in the IProjectContents).
+
+	Static services replaced with interfaces:
+		To make writing unit tests easier, the static services in SharpDevelop are getting
+		replaced with interfaces. The class "SD" has static properties to get references
+		to the services, so the call "ResourceService.GetString()" becomes "SD.ResourceService.GetString()".
+		
+		In unit tests, Rhino.Mocks can be used to easily create mocks of the services:
+			SD.InitializeForUnitTests(); // removes services from previous test cases
+			SD.Services.AddService(typeof(IParserService), MockRepository.GenerateStrictMock<IParserService>());
+			SD.ParserService.Stub(p => p.GetCachedParseInformation(textEditor.FileName)).Return(parseInfo);
+			SD.ParserService.Stub(p => p.GetCompilationForFile(textEditor.FileName)).Return(compilation);
+		
+		It is possible to define a service interface in ICSharpCode.SharpDevelop.dll and have the implementation
+		somewhere else (SD will find it using the AddInTree).
+		This allows for AddIns to consume each other's functionality (e.g. debugger accessing the decompiler service)
+		without having to define a custom extension point.
+		The long-term goal is to have only interfaces and helper classes in ICSharpCode.SharpDevelop.dll (the API for AddIns)
+		and have the implementation details in SharpDevelop.exe (which AddIns aren't supposed to reference).
+
+
+	SD.MainThread:
+		The new best way to invoke a call on the main thread is:
+			SD.MainThread.InvokeAsync(delegate { ... }).FireAndForget();
+		
+		Note that InvokeAsync returns a Task (like all .NET 4.5 *Async APIs). If any exceptions occur while
+		executing the delegate, they will get stored in the task object. This can cause the exception to get
+		silently ignored if the task object isn't used later. The "FireAndForget()" extension method solves
+		this problem by reporting any (future) errors to the message service.
+
+
+	SD.PropertyService:
+		The Get()/Set() methods no longer support nested Properties objects or lists of elements -
+		you will need to use the new dedicated GetList()/SetList()/NestedProperties() methods for that.
+		
+		The Get() method no longer causes the default value to be stored in the container; and GetList()
+		results in a read-only list - an explicit SetList() call is required to store the resulting value again.
+		
+		However, a nested properties container still is connected with its parent, and any changes done
+		to the nested container will get saves without having to call the SetNestedProperties() method.
+
+
+	SD.ParserService:
+		The result of a parser run (ParseInformation) now may contain a fully parsed AST.
+		The ParserService may cache such full ASTs, but may also drop them from memory at any time.
+		This will be implemented by keeping the last N accessed files in the cache. (currently we just keep the caches around forever)
+		Every parse information also contains an IParsedFile instance with the type system information.
+		The IParsedFile is stored permanently (both in ParserService and in the IProjectContents).
 
 
 Context Actions vs. Member Context Menu:

src/AddIns/BackendBindings/CSharpBinding/Project/Resources/CSharp-Semantic.xshd

@@ -35,6 +35,7 @@
 	<Color name="ValueTypes" fontWeight="bold" foreground="#004085" exampleText="System.#{#DateTime#}# date;"/>
 	<Color name="MethodCall" foreground="MidnightBlue" fontWeight="bold" exampleText="o.#{#ToString#}#();"/>
 	<Color name="FieldAccess" fontStyle="italic" exampleText="return this.#{#name#}#;"/>
+	<Color name="InactiveCode" foreground="Gray" exampleText="Deactivated by #if"/>
 	
 	<RuleSet name="CommentMarkerSet">
 		<Keywords fontWeight="bold" foreground="Red">

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

@@ -33,10 +33,12 @@ namespace CSharpBinding
 		readonly HighlightingColor fieldAccessColor;
 		readonly HighlightingColor valueKeywordColor;
 		readonly HighlightingColor parameterModifierColor;
+		readonly HighlightingColor inactiveCodeColor;
 		
 		List<IDocumentLine> invalidLines = new List<IDocumentLine>();
 		List<CachedLine> cachedLines = new List<CachedLine>();
 		bool hasCrashed;
+		bool forceParseOnNextRefresh;
 		
 		int lineNumber;
 		HighlightedLine line;
@@ -61,6 +63,7 @@ namespace CSharpBinding
 			this.fieldAccessColor = highlightingDefinition.GetNamedColor("FieldAccess");
 			this.valueKeywordColor = highlightingDefinition.GetNamedColor("NullOrValueKeywords");
 			this.parameterModifierColor = highlightingDefinition.GetNamedColor("ParameterModifiers");
+			this.inactiveCodeColor = highlightingDefinition.GetNamedColor("InactiveCode");
 			
 			SD.ParserService.ParseInformationUpdated += ParserService_ParseInformationUpdated;
 			SD.ParserService.LoadSolutionProjectsThread.Finished += ParserService_LoadSolutionProjectsThreadEnded;
@@ -146,6 +149,7 @@ namespace CSharpBinding
 		{
 			cachedLines.Clear();
 			invalidLines.Clear();
+			forceParseOnNextRefresh = true;
 			syntaxHighlighter.InvalidateAll();
 		}
 		
@@ -208,7 +212,13 @@ namespace CSharpBinding
 				return cachedLine.HighlightedLine;
 			}
 			
-			var parseInfo = SD.ParserService.GetCachedParseInformation(textEditor.FileName, textEditor.Document.Version) as CSharpFullParseInformation;
+			CSharpFullParseInformation parseInfo;
+			if (forceParseOnNextRefresh) {
+				forceParseOnNextRefresh = false;
+				parseInfo = SD.ParserService.Parse(textEditor.FileName, textEditor.Document) as CSharpFullParseInformation;
+			} else {
+				parseInfo = SD.ParserService.GetCachedParseInformation(textEditor.FileName, textEditor.Document.Version) as CSharpFullParseInformation;
+			}
 			if (parseInfo == null) {
 				if (!invalidLines.Contains(documentLine))
 					invalidLines.Add(documentLine);
@@ -278,10 +288,10 @@ namespace CSharpBinding
 		{
 			if (color == null)
 				return;
-			if (start.Line == lineNumber && end.Line == lineNumber) {
+			if (start.Line <= lineNumber && end.Line >= lineNumber) {
 				int lineStartOffset = line.DocumentLine.Offset;
-				int startOffset = lineStartOffset + start.Column - 1;
-				int endOffset = lineStartOffset + end.Column - 1;
+				int startOffset = lineStartOffset + (start.Line == lineNumber ? start.Column - 1 : 0);
+				int endOffset = lineStartOffset + (end.Line == lineNumber ? end.Column - 1 : line.DocumentLine.Length);
 				if (line.Sections.Count > 0) {
 					HighlightedSection prevSection = line.Sections.Last();
 					if (startOffset < prevSection.Offset + prevSection.Length)
@@ -347,12 +357,18 @@ namespace CSharpBinding
 		{
 			Expression target = invocationExpression.Target;
 			if (target is IdentifierExpression || target is MemberReferenceExpression || target is PointerReferenceExpression) {
+				var invocationRR = resolver.Resolve(invocationExpression) as CSharpInvocationResolveResult;
+				if (invocationRR != null && IsInactiveConditionalMethod(invocationRR.Member)) {
+					// mark the whole invocation expression as inactive code
+					Colorize(invocationExpression, inactiveCodeColor);
+					return;
+				}
+				
 				// apply color to target's target
 				target.GetChildByRole(Roles.TargetExpression).AcceptVisitor(this);
 				
 				// highlight the method call
 				var identifier = target.GetChildByRole(Roles.Identifier);
-				var invocationRR = resolver.Resolve(invocationExpression) as CSharpInvocationResolveResult;
 				if (invocationRR != null && !invocationRR.IsDelegateInvocation) {
 					Colorize(identifier, methodCallColor);
 				} else {
@@ -364,8 +380,38 @@ namespace CSharpBinding
 			} else {
 				target.AcceptVisitor(this);
 			}
+			// Visit arguments and comments within the arguments:
+			for (AstNode child = target.NextSibling; child != null; child = child.NextSibling) {
+				child.AcceptVisitor(this);
+			}
+		}
 		
-			invocationExpression.Arguments.AcceptVisitor(this);
+		bool IsInactiveConditionalMethod(IParameterizedMember member)
+		{
+			if (member.EntityType != EntityType.Method || member.ReturnType.Kind != TypeKind.Void)
+				return false;
+			while (member.IsOverride)
+				member = (IParameterizedMember)InheritanceHelper.GetBaseMember(member);
+			return IsInactiveConditional(member.Attributes);
+		}
+		
+		bool IsInactiveConditional(IList<IAttribute> attributes)
+		{
+			bool hasConditionalAttribute = false;
+			foreach (var attr in attributes) {
+				if (attr.AttributeType.Name == "ConditionalAttribute" && attr.AttributeType.Namespace == "System.Diagnostics" && attr.PositionalArguments.Count == 1) {
+					string symbol = attr.PositionalArguments[0].ConstantValue as string;
+					if (symbol != null) {
+						hasConditionalAttribute = true;
+						var cu = this.resolver.RootNode as CompilationUnit;
+						if (cu != null) {
+							if (cu.ConditionalSymbols.Contains(symbol))
+								return false; // conditional is active
+						}
+					}
+				}
+			}
+			return hasConditionalAttribute;
 		}
 		
 		public override void VisitAccessor(Accessor accessor)
@@ -380,34 +426,40 @@ namespace CSharpBinding
 		
 		public override void VisitMethodDeclaration(MethodDeclaration methodDeclaration)
 		{
-			//methodDeclaration.Attributes.AcceptVisitor(this);
-			methodDeclaration.ReturnType.AcceptVisitor(this);
-			methodDeclaration.PrivateImplementationType.AcceptVisitor(this);
-			Colorize(methodDeclaration.NameToken, methodCallColor);
-			methodDeclaration.TypeParameters.AcceptVisitor(this);
-			methodDeclaration.Parameters.AcceptVisitor(this);
-			methodDeclaration.Constraints.AcceptVisitor(this);
-			methodDeclaration.Body.AcceptVisitor(this);
+			for (AstNode child = methodDeclaration.FirstChild; child != null; child = child.NextSibling) {
+				if (child.StartLocation.Line <= lineNumber && child.EndLocation.Line >= lineNumber) {
+					if (child.Role == Roles.Identifier) {
+						// child == methodDeclaration.NameToken
+						Colorize(child, methodCallColor);
+					} else {
+						child.AcceptVisitor(this);
+					}
+				}
+			}
 		}
 		
 		public override void VisitTypeDeclaration(TypeDeclaration typeDeclaration)
 		{
-			//typeDeclaration.Attributes.AcceptVisitor(this);
-			
-			if (typeDeclaration.ClassType == ClassType.Enum || typeDeclaration.ClassType == ClassType.Struct)
-				Colorize(typeDeclaration.NameToken, valueTypeColor);
-			else
-				Colorize(typeDeclaration.NameToken, referenceTypeColor);
-			
-			typeDeclaration.TypeParameters.AcceptVisitor(this);
-			typeDeclaration.BaseTypes.AcceptVisitor(this);
-			typeDeclaration.Constraints.AcceptVisitor(this);
-			typeDeclaration.Members.AcceptVisitor(this);
+			// Type declarations often contain #if directives, so we must make sure
+			// to also visit the comments.
+			for (AstNode child = typeDeclaration.FirstChild; child != null; child = child.NextSibling) {
+				if (child.StartLocation.Line <= lineNumber && child.EndLocation.Line >= lineNumber) {
+					if (child.Role == Roles.Identifier) {
+						// child == typeDeclaration.NameToken
+						if (typeDeclaration.ClassType == ClassType.Enum || typeDeclaration.ClassType == ClassType.Struct)
+							Colorize(typeDeclaration.NameToken, valueTypeColor);
+						else
+							Colorize(typeDeclaration.NameToken, referenceTypeColor);
+					} else {
+						child.AcceptVisitor(this);
+					}
+				}
+			}
 		}
 		
 		public override void VisitTypeParameterDeclaration(TypeParameterDeclaration typeParameterDeclaration)
 		{
-			//typeParameterDeclaration.Attributes.AcceptVisitor(this);
+			typeParameterDeclaration.Attributes.AcceptVisitor(this);
 			
 			if (typeParameterDeclaration.Variance == VarianceModifier.Contravariant)
 				Colorize(typeParameterDeclaration.VarianceToken, parameterModifierColor);
@@ -440,6 +492,13 @@ namespace CSharpBinding
 			}
 			variableInitializer.Initializer.AcceptVisitor(this);
 		}
+		
+		public override void VisitComment(Comment comment)
+		{
+			if (comment.CommentType == CommentType.InactiveCode) {
+				Colorize(comment, inactiveCodeColor);
+			}
+		}
 		#endregion
 	}
 }

src/AddIns/BackendBindings/CSharpBinding/Tests/OverrideCompletionTests.cs

@@ -57,7 +57,7 @@ class DerivedClass : BaseClass {
 			var pc = new CSharpProjectContent().UpdateProjectContent(null, parseInfo.ParsedFile);
 			pc = pc.AddAssemblyReferences(new[] { Corlib });
 			var compilation = pc.CreateCompilation();
-			SD.Services.AddService(typeof(IParserService), MockRepository.GenerateStub<IParserService>());
+			SD.Services.AddService(typeof(IParserService), MockRepository.GenerateStrictMock<IParserService>());
 			SD.ParserService.Stub(p => p.GetCachedParseInformation(textEditor.FileName)).Return(parseInfo);
 			SD.ParserService.Stub(p => p.GetCompilationForFile(textEditor.FileName)).Return(compilation);
 			CSharpCompletionBinding completion = new CSharpCompletionBinding();

src/Main/Base/Project/ICSharpCode.SharpDevelop.csproj

@@ -740,6 +740,7 @@
     <Compile Include="Src\Gui\Dialogs\ReferenceDialog\AsyncDiscoveryState.cs" />
     <Compile Include="Src\Gui\Dialogs\ReferenceDialog\DiscoveryNetworkCredential.cs" />
     <Compile Include="Src\Services\ProjectService\ProjectLoader.cs" />
+    <Compile Include="Src\Util\AtomicBoolean.cs" />
     <Compile Include="Src\Util\MultiDictionary.cs" />
     <Compile Include="Src\Util\DotnetDetection.cs" />
     <Compile Include="Src\Util\FakeXmlViewContent.cs" />

src/Main/Base/Project/Src/Project/CompilableProject.cs

@@ -238,9 +238,14 @@ namespace ICSharpCode.SharpDevelop.Project
 			lock (SyncRoot) {
 				if (parseProjectContentContainer == null)
 					return; // parsing hasn't started yet; no need to re-parse
+				if (references) {
+					parseProjectContentContainer.ReparseReferences();
+				}
+				if (code) {
+					parseProjectContentContainer.SetCompilerSettings(CreateCompilerSettings());
+					parseProjectContentContainer.ReparseCode();
+				}
 			}
-			#warning Reparse
-			throw new NotImplementedException();
 		}
 		
 		[Browsable(false)]

src/Main/Base/Project/Src/Project/MSBuildInternals.cs

@@ -205,7 +205,7 @@ namespace ICSharpCode.SharpDevelop.Project
 			}
 			
 			List<string> targets = new List<string>();
-			if (baseProject.HasProjectType(ProjectTypeGuids.PortableLibrary)) {
+			if (baseProject.MinimumSolutionVersion >= Solution.SolutionVersionVS2010) {
 				targets.Add("ResolveReferences");
 				targets.Add("DesignTimeResolveAssemblyReferences");
 			} else {

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

@@ -46,6 +46,7 @@ namespace ICSharpCode.SharpDevelop.Parser
 		
 		string cacheFileName;
 		
+		#region Constructor + Dispose
 		public ParseProjectContentContainer(MSBuildBasedProject project, IProjectContent initialProjectContent)
 		{
 			if (project == null)
@@ -92,6 +93,7 @@ namespace ICSharpCode.SharpDevelop.Parser
 			if (serializeOnDispose)
 				SerializeAsync(cacheFileName, pc).FireAndForget();
 		}
+		#endregion
 		
 		#region Caching logic (serialization)
 		
@@ -228,13 +230,7 @@ namespace ICSharpCode.SharpDevelop.Parser
 			}
 		}
 		
-		bool IsParseableFile(FileProjectItem projectItem)
-		{
-			if (projectItem == null || string.IsNullOrEmpty(projectItem.FileName))
-				return false;
-			return projectItem.ItemType == ItemType.Compile || projectItem.ItemType == ItemType.Page;
-		}
-		
+		#region Initialize
 		void Initialize(IProgressMonitor progressMonitor, List<FileName> filesToParse)
 		{
 			ICollection<ProjectItem> projectItems = project.Items;
@@ -248,16 +244,29 @@ namespace ICSharpCode.SharpDevelop.Parser
 			using (IProgressMonitor initReferencesProgressMonitor = progressMonitor.CreateSubTask(LoadingReferencesWorkAmount * scalingFactor),
 			       parseProgressMonitor = progressMonitor.CreateSubTask(projectItems.Count * scalingFactor))
 			{
-				var resolveReferencesTask = ResolveReferencesAsync(projectItems, initReferencesProgressMonitor);
+				var resolveReferencesTask = Task.Run(
+					delegate {
+						DoResolveReferences(projectItems, initReferencesProgressMonitor);
+					}, initReferencesProgressMonitor.CancellationToken);
 				
 				ParseFiles(filesToParse, parseProgressMonitor);
 				
 				resolveReferencesTask.Wait();
 			}
 		}
+		#endregion
+		
+		#region ParseFiles
+		bool IsParseableFile(FileProjectItem projectItem)
+		{
+			if (projectItem == null || string.IsNullOrEmpty(projectItem.FileName))
+				return false;
+			return projectItem.ItemType == ItemType.Compile || projectItem.ItemType == ItemType.Page;
+		}
 		
-		void ParseFiles(IReadOnlyList<FileName> filesToParse, IProgressMonitor progressMonitor)
+		void ParseFiles(List<FileName> filesToParse, IProgressMonitor progressMonitor)
 		{
+			IParserService parserService = SD.ParserService;
 			IProjectContent cachedPC = TryReadFromCache(cacheFileName);
 			ParseableFileContentFinder finder = new ParseableFileContentFinder();
 			
@@ -279,7 +288,7 @@ namespace ICSharpCode.SharpDevelop.Parser
 					if (content == null && cachedPC != null) {
 						parsedFile = cachedPC.GetFile(fileName);
 						if (parsedFile != null && parsedFile.LastWriteTime == File.GetLastWriteTimeUtc(fileName)) {
-							SD.ParserService.RegisterParsedFile(fileName, project, parsedFile);
+							parserService.RegisterParsedFile(fileName, project, parsedFile);
 							wasLoadedFromCache = true;
 						}
 					}
@@ -292,7 +301,7 @@ namespace ICSharpCode.SharpDevelop.Parser
 							}
 						}
 						if (content != null) {
-							parsedFile = SD.ParserService.ParseFile(fileName, content, project);
+							parsedFile = parserService.ParseFile(fileName, content, project);
 						}
 					}
 					lock (progressLock) {
@@ -314,88 +323,111 @@ namespace ICSharpCode.SharpDevelop.Parser
 			}
 		}
 		
-		Task ResolveReferencesAsync(ICollection<ProjectItem> projectItems, IProgressMonitor progressMonitor)
+		AtomicBoolean reparseCodeStartedButNotYetRunning;
+		
+		public void ReparseCode()
 		{
-			return Task.Run(
-				delegate {
-					var referenceItems = project.ResolveAssemblyReferences(progressMonitor.CancellationToken);
-					const double assemblyResolvingProgress = 0.3; // 30% asm resolving, 70% asm loading
-					progressMonitor.Progress += assemblyResolvingProgress;
-					progressMonitor.CancellationToken.ThrowIfCancellationRequested();
-					
-					List<string> assemblyFiles = new List<string>();
-					List<IAssemblyReference> newReferences = new List<IAssemblyReference>();
-					
-					foreach (var reference in referenceItems) {
-						ProjectReferenceProjectItem projectReference = reference as ProjectReferenceProjectItem;
-						if (projectReference != null) {
-							newReferences.Add(projectReference);
-						} else {
-							assemblyFiles.Add(reference.FileName);
-						}
-					}
+			if (reparseCodeStartedButNotYetRunning.Set()) {
+				var filesToParse = (
+					from item in project.Items.OfType<FileProjectItem>()
+					where IsParseableFile(item)
+					select FileName.Create(item.FileName)
+				).ToList();
+				SD.ParserService.LoadSolutionProjectsThread.AddJob(
+					monitor => {
+						reparseCodeStartedButNotYetRunning.Reset();
+						DoReparseCode(filesToParse, monitor);
+					},
+					"Loading " + project.Name + "...", filesToParse.Count);
+			}
+		}
 		
-					foreach (string file in assemblyFiles) {
-						progressMonitor.CancellationToken.ThrowIfCancellationRequested();
-						if (File.Exists(file)) {
-							var pc = SD.AssemblyParserService.GetAssembly(FileName.Create(file), progressMonitor.CancellationToken);
-							if (pc != null) {
-								newReferences.Add(pc);
-							}
-						}
-						progressMonitor.Progress += (1.0 - assemblyResolvingProgress) / assemblyFiles.Count;
+		void DoReparseCode(List<FileName> filesToParse, IProgressMonitor progressMonitor)
+		{
+			IParserService parserService = SD.ParserService;
+			ParseableFileContentFinder finder = new ParseableFileContentFinder();
+			double fileCountInverse = 1.0 / filesToParse.Count;
+			object progressLock = new object();
+			Parallel.ForEach(
+				filesToParse,
+				new ParallelOptions {
+					MaxDegreeOfParallelism = Environment.ProcessorCount,
+					CancellationToken = progressMonitor.CancellationToken
+				},
+				fileName => {
+					ITextSource content = finder.Create(fileName);
+					if (content != null) {
+						parserService.ParseFile(fileName, content, project);
 					}
-					lock (lockObj) {
-						projectContent = projectContent.RemoveAssemblyReferences(this.references).AddAssemblyReferences(newReferences);
-						this.references = newReferences.ToArray();
-						SD.ParserService.InvalidateCurrentSolutionSnapshot();
+					lock (progressLock) {
+						progressMonitor.Progress += fileCountInverse;
+					}
+				});
+		}
+		#endregion
+		
+		#region ResolveReferences
+		void DoResolveReferences(ICollection<ProjectItem> projectItems, IProgressMonitor progressMonitor)
+		{
+			var referenceItems = project.ResolveAssemblyReferences(progressMonitor.CancellationToken);
+			const double assemblyResolvingProgress = 0.3; // 30% asm resolving, 70% asm loading
+			progressMonitor.Progress += assemblyResolvingProgress;
+			progressMonitor.CancellationToken.ThrowIfCancellationRequested();
+			
+			List<string> assemblyFiles = new List<string>();
+			List<IAssemblyReference> newReferences = new List<IAssemblyReference>();
+			
+			foreach (var reference in referenceItems) {
+				ProjectReferenceProjectItem projectReference = reference as ProjectReferenceProjectItem;
+				if (projectReference != null) {
+					newReferences.Add(projectReference);
+				} else {
+					assemblyFiles.Add(reference.FileName);
+				}
+			}
+			
+			foreach (string file in assemblyFiles) {
+				progressMonitor.CancellationToken.ThrowIfCancellationRequested();
+				if (File.Exists(file)) {
+					var pc = SD.AssemblyParserService.GetAssembly(FileName.Create(file), progressMonitor.CancellationToken);
+					if (pc != null) {
+						newReferences.Add(pc);
 					}
-				}, progressMonitor.CancellationToken);
+				}
+				progressMonitor.Progress += (1.0 - assemblyResolvingProgress) / assemblyFiles.Count;
+			}
+			lock (lockObj) {
+				if (!disposed) {
+					projectContent = projectContent.RemoveAssemblyReferences(this.references).AddAssemblyReferences(newReferences);
+					this.references = newReferences.ToArray();
+					SD.ParserService.InvalidateCurrentSolutionSnapshot();
+				}
+			}
 		}
 		
-		// ensure that com references are built serially because we cannot invoke multiple instances of MSBuild
-		static Queue<Action> callAfterAddComReference = new Queue<Action>();
-		static bool buildingComReference;
+		AtomicBoolean reparseReferencesStartedButNotYetRunning;
 		
+		public void ReparseReferences()
+		{
+			if (reparseReferencesStartedButNotYetRunning.Set()) {
+				SD.ParserService.LoadSolutionProjectsThread.AddJob(
+					monitor => {
+						reparseReferencesStartedButNotYetRunning.Reset();
+						DoResolveReferences(project.Items, monitor);
+					},
+					"Loading " + project.Name + "...", LoadingReferencesWorkAmount);
+			}
+		}
+		#endregion
+		
+		#region Project Item Added/Removed
 		void OnProjectItemAdded(object sender, ProjectItemEventArgs e)
 		{
 			if (e.Project != project) return;
 			
 			ReferenceProjectItem reference = e.ProjectItem as ReferenceProjectItem;
 			if (reference != null) {
-				if (reference.ItemType == ItemType.COMReference) {
-					Action action = delegate {
-						// Compile project to ensure interop library is generated
-						project.Save(); // project is not yet saved when ItemAdded fires, so save it here
-						string message = StringParser.Parse("\n${res:MainWindow.CompilerMessages.CreatingCOMInteropAssembly}\n");
-						TaskService.BuildMessageViewCategory.AppendText(message);
-						BuildCallback afterBuildCallback = delegate {
-							ReparseReferences();
-							lock (callAfterAddComReference) {
-								if (callAfterAddComReference.Count > 0) {
-									// run next enqueued action
-									callAfterAddComReference.Dequeue()();
-								} else {
-									buildingComReference = false;
-								}
-							}
-						};
-						BuildEngine.BuildInGui(project, new BuildOptions(BuildTarget.ResolveComReferences, afterBuildCallback));
-					};
-					
-					// enqueue actions when adding multiple COM references so that multiple builds of the same project
-					// are not started parallely
-					lock (callAfterAddComReference) {
-						if (buildingComReference) {
-							callAfterAddComReference.Enqueue(action);
-						} else {
-							buildingComReference = true;
-							action();
-						}
-					}
-				} else {
-					ReparseReferences();
-				}
+				ReparseReferences();
 			}
 			FileProjectItem fileProjectItem = e.ProjectItem as FileProjectItem;
 			if (IsParseableFile(fileProjectItem)) {
@@ -404,11 +436,6 @@ namespace ICSharpCode.SharpDevelop.Parser
 			}
 		}
 		
-		void ReparseReferences()
-		{
-			throw new NotImplementedException();
-		}
-		
 		void OnProjectItemRemoved(object sender, ProjectItemEventArgs e)
 		{
 			if (e.Project != project) return;
@@ -427,5 +454,6 @@ namespace ICSharpCode.SharpDevelop.Parser
 				SD.ParserService.RemoveOwnerProject(FileName.Create(e.ProjectItem.FileName), project);
 			}
 		}
+		#endregion
 	}
 }

src/Main/Base/Project/Src/Util/AtomicBoolean.cs

@@ -0,0 +1,60 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Threading;
+
+namespace ICSharpCode.SharpDevelop
+{
+	/// <summary>
+	/// A boolean that starts 'false' and can be atomically set/reset.
+	/// </summary>
+	public struct AtomicBoolean
+	{
+		int val;
+		
+		/// <summary>
+		/// Gets/Sets the value.
+		/// </summary>
+		public bool Value {
+			get {
+				return Volatile.Read(ref val) != 0;
+			}
+			set {
+				Volatile.Write(ref val, value ? 1 : 0);
+			}
+		}
+		
+		/// <summary>
+		/// Sets the value to true.
+		/// </summary>
+		/// <returns>True if the value was successfully set from false to true,
+		/// false if the value already was true.</returns>
+		public bool Set()
+		{
+			return Interlocked.Exchange(ref val, 1) == 0;
+		}
+		
+		/// <summary>
+		/// Sets the value to false.
+		/// </summary>
+		/// <returns>True if the value was successfully set from true to false,
+		/// false if the value already was false.</returns>
+		public bool Reset()
+		{
+			return Interlocked.Exchange(ref val, 0) != 0;
+		}
+		
+		/// <inheritdoc/>
+		public override int GetHashCode()
+		{
+			return this.Value.GetHashCode();
+		}
+		
+		/// <inheritdoc/>
+		public override bool Equals(object obj)
+		{
+			return (obj is AtomicBoolean) && val == ((AtomicBoolean)obj).val;
+		}
+	}
+}

src/Main/Core/Project/Src/AddInTree/AddInManager.cs

@@ -265,7 +265,7 @@ namespace ICSharpCode.Core
 		/// </summary>
 		/// <param name="addIns">
 		/// The list of AddIns to add. (use <see cref="AddIn"/> instances
-		/// created by <see cref="AddIn.Load(TextReader,string,XmlNameTable)"/>).
+		/// created by <see cref="AddIn.Load(IAddInTree,TextReader,string,XmlNameTable)"/>).
 		/// </param>
 		public static void AddExternalAddIns(IList<AddIn> addIns)
 		{
@@ -289,7 +289,7 @@ namespace ICSharpCode.Core
 		/// AddIns.
 		/// </summary>
 		/// The list of AddIns to remove.
-		/// (use external AddIns from the <see cref="AddInTree.AddIns"/> collection).
+		/// (use external AddIns from the <see cref="IAddInTree.AddIns"/> collection).
 		public static void RemoveExternalAddIns(IList<AddIn> addIns)
 		{
 			List<string> addInFiles = new List<string>();