Fixed exception when a file was modified externally so that the old start position of a class is on an invalid line.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@3039 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Main/Base/Project/Src/Gui/Pads/TaskList/TaskListPad.cs

@@ -182,7 +182,6 @@ namespace ICSharpCode.SharpDevelop.Gui
 						return true;
 					
 					return false;
-					break;
 				case 1:
 					return ((WorkbenchSingleton.Workbench.ActiveViewContent != null) && (ProjectService.CurrentProject.FindFile(item.FileName) != null));
 				case 2:

src/Main/Base/Project/Src/TextEditor/Bookmarks/ClassMemberBookmark.cs

@@ -40,7 +40,9 @@ namespace ICSharpCode.SharpDevelop.Bookmarks
 		static int GetLineNumberFromMember(IDocument document, IMember member)
 		{
 			int line = member.Region.BeginLine - 1;
-			if (document != null && line >= document.TotalNumberOfLines)
+			if (line < 0)
+				return 0;
+			else if (document != null && line >= document.TotalNumberOfLines)
 				return document.TotalNumberOfLines - 1;
 			else
 				return line;
@@ -82,11 +84,22 @@ namespace ICSharpCode.SharpDevelop.Bookmarks
 		}
 		
 		public ClassBookmark(IDocument document, IClass @class)
-			: base(document, Math.Max(@class.Region.BeginLine - 1, 0))
+			: base(document, GetLineNumberFromClass(document, @class))
 		{
 			this.@class = @class;
 		}
 		
+		static int GetLineNumberFromClass(IDocument document, IClass @class)
+		{
+			int line = @class.Region.BeginLine - 1;
+			if (line < 0)
+				return 0;
+			else if (document != null && line >= document.TotalNumberOfLines)
+				return document.TotalNumberOfLines - 1;
+			else
+				return line;
+		}
+		
 		public const string ContextMenuPath = "/SharpDevelop/ViewContent/DefaultTextEditor/ClassBookmarkContextMenu";
 		
 		public override bool Click(Control parent, MouseEventArgs e)

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

@@ -383,9 +383,6 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 		
 		public ResolveResult ResolveInternal(Expression expr, ExpressionContext context)
 		{
-			if (expr is IdentifierExpression)
-				return ResolveIdentifier(expr as IdentifierExpression, context);
-			
 			ResolveVisitor resolveVisitor = new ResolveVisitor(this);
 			return resolveVisitor.Resolve(expr);
 		}