Fixed "Bug 1744 - [New Resolver] Issues while typing a property".

1 files changed, 1907 insertions, 1866 deletions

diff --git a/main/contrib/ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs b/main/contrib/ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs
index 69548ed5bb..c8990cb6cd 100644
--- a/main/contrib/ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs
+++ b/main/contrib/ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs
@@ -1,1866 +1,1907 @@
-// 
-// CSharpCompletionEngine.cs
-//  
-// Author:
-//       Mike Krüger <mkrueger@xamarin.com>
-// 
-// Copyright (c) 2011 Xamarin Inc. (http://xamarin.com)
-// 
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-// 
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-// 
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-
-using ICSharpCode.NRefactory.Completion;
-using ICSharpCode.NRefactory.CSharp.Refactoring;
-using ICSharpCode.NRefactory.CSharp.Resolver;
-using ICSharpCode.NRefactory.Editor;
-using ICSharpCode.NRefactory.Semantics;
-using ICSharpCode.NRefactory.TypeSystem;
-
-namespace ICSharpCode.NRefactory.CSharp.Completion
-{
-	public class CSharpCompletionEngine : CSharpCompletionEngineBase
-	{
-		internal ICompletionDataFactory factory;
-		
-		#region Additional input properties
-		public CSharpFormattingOptions FormattingPolicy { get; set; }
-		public string EolMarker { get; set; }
-		public string IndentString { get; set; }
-		#endregion
-		
-		#region Result properties
-		public bool AutoCompleteEmptyMatch;
-		public bool AutoSelect;
-		public string DefaultCompletionString;
-		#endregion
-		
-		public CSharpCompletionEngine (IDocument document, ICompletionDataFactory factory)
-		{
-			this.document = document;
-			this.factory = factory;
-		}
-
-		public IEnumerable<ICompletionData> GetCompletionData (int offset, bool controlSpace)
-		{
-			this.AutoCompleteEmptyMatch = true;
-			this.AutoSelect = true;
-			this.DefaultCompletionString = null;
-			SetOffset (offset);
-			if (offset > 0) {
-				char lastChar = document.GetCharAt (offset - 1);
-				var result = MagicKeyCompletion (lastChar, controlSpace) ?? Enumerable.Empty<ICompletionData> ();
-				if (controlSpace && char.IsWhiteSpace (lastChar)) {
-					offset -= 2;
-					while (offset >= 0 && char.IsWhiteSpace (document.GetCharAt (offset)))
-						offset--;
-					if (offset > 0) {
-						var nonWsResult = MagicKeyCompletion (document.GetCharAt (offset), controlSpace);
-						if (nonWsResult != null)
-							result = result.Concat (nonWsResult);
-					}
-				}
-				
-				return result;
-			}
-			return Enumerable.Empty<ICompletionData> ();
-		}
-		
-		IEnumerable<ICompletionData> MagicKeyCompletion (char completionChar, bool controlSpace)
-		{
-			switch (completionChar) {
-			// Magic key completion
-			case ':':
-			case '.':
-				if (IsInsideComment () || IsInsideString ())
-					return Enumerable.Empty<ICompletionData> ();
-				var expr = GetExpressionBeforeCursor ();
-				if (expr == null)
-					return null;
-				// do not complete <number>. (but <number>.<number>.)
-				if (expr.Item2 is PrimitiveExpression) {
-					var pexpr = (PrimitiveExpression)expr.Item2;
-					if (!(pexpr.Value is string || pexpr.Value is char) && !pexpr.LiteralValue.Contains ('.'))
-						return null;
-				}
-				
-				
-				var resolveResult = ResolveExpression (expr.Item1, expr.Item2, expr.Item3);
-				
-				if (resolveResult == null)
-					return null;
-				if (expr.Item2 is AstType)
-					return CreateTypeAndNamespaceCompletionData (location, resolveResult.Item1, expr.Item2, resolveResult.Item2);
-				
-				return CreateCompletionData (location, resolveResult.Item1, expr.Item2, resolveResult.Item2);
-			case '#':
-				if (IsInsideComment () || IsInsideString ())
-					return null;
-				return GetDirectiveCompletionData ();
-			
-// XML doc completion
-			case '<':
-				if (IsInsideDocComment ())
-					return GetXmlDocumentationCompletionData ();
-				if (controlSpace)
-					return DefaultControlSpaceItems ();
-				return null;
-			case '>':
-				if (!IsInsideDocComment ())
-					return null;
-				string lineText = document.GetText (document.GetLineByNumber (location.Line));
-				int startIndex = Math.Min (location.Column - 1, lineText.Length - 1);
-				
-				while (startIndex >= 0 && lineText [startIndex] != '<') {
-					--startIndex;
-					if (lineText [startIndex] == '/') { // already closed.
-						startIndex = -1;
-						break;
-					}
-				}
-				
-				if (startIndex >= 0) {
-					int endIndex = startIndex;
-					while (endIndex <= location.Column && endIndex < lineText.Length && !Char.IsWhiteSpace (lineText [endIndex])) {
-						endIndex++;
-					}
-					string tag = endIndex - startIndex - 1 > 0 ? lineText.Substring (startIndex + 1, endIndex - startIndex - 2) : null;
-					if (!string.IsNullOrEmpty (tag) && commentTags.IndexOf (tag) >= 0)
-						document.Insert (offset, "</" + tag + ">");
-				}
-				return null;
-			
-			// Parameter completion
-			case '(':
-				if (IsInsideComment () || IsInsideString ())
-					return null;
-				var invoke = GetInvocationBeforeCursor (true);
-				if (invoke == null)
-					return null;
-				if (invoke.Item2 is TypeOfExpression)
-					return CreateTypeList ();
-				var invocationResult = ResolveExpression (invoke.Item1, invoke.Item2, invoke.Item3);
-				if (invocationResult == null)
-					return null;
-				var methodGroup = invocationResult.Item1 as MethodGroupResolveResult;
-				if (methodGroup != null)
-					return CreateParameterCompletion (methodGroup, invocationResult.Item2, invoke.Item2, 0, controlSpace);
-				return null;
-			case ',':
-				int cpos2;
-				if (!GetParameterCompletionCommandOffset (out cpos2)) 
-					return null;
-			//	completionContext = CompletionWidget.CreateCodeCompletionContext (cpos2);
-			//	int currentParameter2 = MethodParameterDataProvider.GetCurrentParameterIndex (CompletionWidget, completionContext) - 1;
-//				return CreateParameterCompletion (CreateResolver (), location, ExpressionContext.MethodBody, provider.Methods, currentParameter);	
-				break;
-				
-			// Completion on space:
-			case ' ':
-				if (IsInsideComment () || IsInsideString ())
-					return null;
-				
-				int tokenIndex = offset;
-				string token = GetPreviousToken (ref tokenIndex, false);
-				
-				// check propose name, for context <variable name> <ctrl+space> (but only in control space context)
-				IType isAsType = null;
-				var isAsExpression = GetExpressionAt (offset);
-				if (controlSpace && isAsExpression != null && isAsExpression.Item2 is VariableDeclarationStatement && token != "new") {
-					var parent = isAsExpression.Item2 as VariableDeclarationStatement;
-					int offset1 = document.GetOffset (parent.Type.StartLocation);
-					int offset2 = document.GetOffset (parent.Type.EndLocation);
-					
-					string name = document.GetText (offset1, offset2 - offset1);
-					var names = new List<string> ();
-					int lastNameStart = 0;
-					for (int i = 1; i < name.Length; i++) {
-						if (Char.IsUpper (name [i])) {
-							names.Add (name.Substring (lastNameStart, i - lastNameStart));
-							lastNameStart = i;
-						}
-					}
-					names.Add (name.Substring (lastNameStart, name.Length - lastNameStart));
-					var proposeNameList = new CompletionDataWrapper (this);
-					var possibleName = new StringBuilder ();
-					for (int i = 0; i < names.Count; i++) {
-						possibleName.Length = 0;
-						for (int j = i; j < names.Count; j++) {
-							if (string.IsNullOrEmpty (names [j]))
-								continue;
-							if (j == i) 
-								names [j] = Char.ToLower (names [j] [0]) + names [j].Substring (1);
-							possibleName.Append (names [j]);
-						}
-						if (possibleName.Length > 0)
-							proposeNameList.Result.Add (factory.CreateLiteralCompletionData (possibleName.ToString ()));
-					}
-					
-					AutoSelect = false;
-					AutoCompleteEmptyMatch = false;
-					return proposeNameList.Result;
-				}
-//				int tokenIndex = offset;
-//				string token = GetPreviousToken (ref tokenIndex, false);
-//				if (result.ExpressionContext == ExpressionContext.ObjectInitializer) {
-//					resolver = CreateResolver ();
-//					ExpressionContext exactContext = new NewCSharpExpressionFinder (dom).FindExactContextForObjectInitializer (document, resolver.Unit, Document.FileName, resolver.CallingType);
-//					IReturnType objectInitializer = ((ExpressionContext.TypeExpressionContext)exactContext).UnresolvedType;
-//					if (objectInitializer != null && objectInitializer.ArrayDimensions == 0 && objectInitializer.PointerNestingLevel == 0 && (token == "{" || token == ","))
-//						return CreateCtrlSpaceCompletionData (completionContext, result); 
-//				}
-				if (token == "=") {
-					int j = tokenIndex;
-					string prevToken = GetPreviousToken (ref j, false);
-					if (prevToken == "=" || prevToken == "+" || prevToken == "-") {
-						token = prevToken + token;
-						tokenIndex = j;
-					}
-				}
-				switch (token) {
-				case "(":
-				case ",":
-					int cpos;
-					if (!GetParameterCompletionCommandOffset (out cpos)) 
-						break;
-					int currentParameter = GetCurrentParameterIndex (cpos, 0) - 1;
-					if (currentParameter < 0)
-						return null;
-					invoke = GetInvocationBeforeCursor (token == "(");
-					if (invoke == null)
-						return null;
-					invocationResult = ResolveExpression (invoke.Item1, invoke.Item2, invoke.Item3);
-					if (invocationResult == null)
-						return null;
-					methodGroup = invocationResult.Item1 as MethodGroupResolveResult;
-					if (methodGroup != null)
-						return CreateParameterCompletion (methodGroup, invocationResult.Item2, invoke.Item2, currentParameter, controlSpace);
-					return null;
-				case "=":
-				case "==":
-					GetPreviousToken (ref tokenIndex, false);
-					
-					var expressionOrVariableDeclaration = GetExpressionAt (tokenIndex);
-					if (expressionOrVariableDeclaration == null)
-						return null;
-					
-					resolveResult = ResolveExpression (expressionOrVariableDeclaration.Item1, expressionOrVariableDeclaration.Item2, expressionOrVariableDeclaration.Item3);
-					if (resolveResult == null)
-						return null;
-					
-					if (resolveResult.Item1.Type.Kind == TypeKind.Enum) {
-						var wrapper = new CompletionDataWrapper (this);
-						AddContextCompletion (wrapper, resolveResult.Item2, expressionOrVariableDeclaration.Item2);
-						AddEnumMembers (wrapper, resolveResult.Item1.Type, resolveResult.Item2);
-						AutoCompleteEmptyMatch = false;
-						return wrapper.Result;
-					}
-//				
-//					if (resolvedType.FullName == DomReturnType.Bool.FullName) {
-//						CompletionDataList completionList = new ProjectDomCompletionDataList ();
-//						CompletionDataCollector cdc = new CompletionDataCollector (this, dom, completionList, Document.CompilationUnit, resolver.CallingType, location);
-//						completionList.AutoCompleteEmptyMatch = false;
-//						cdc.Add ("true", "md-keyword");
-//						cdc.Add ("false", "md-keyword");
-//						resolver.AddAccessibleCodeCompletionData (result.ExpressionContext, cdc);
-//						return completionList;
-//					}
-//					if (resolvedType.ClassType == ClassType.Delegate && token == "=") {
-//						CompletionDataList completionList = new ProjectDomCompletionDataList ();
-//						string parameterDefinition = AddDelegateHandlers (completionList, resolvedType);
-//						string varName = GetPreviousMemberReferenceExpression (tokenIndex);
-//						completionList.Add (new EventCreationCompletionData (document, varName, resolvedType, null, parameterDefinition, resolver.CallingMember, resolvedType));
-//						
-//						CompletionDataCollector cdc = new CompletionDataCollector (this, dom, completionList, Document.CompilationUnit, resolver.CallingType, location);
-//						resolver.AddAccessibleCodeCompletionData (result.ExpressionContext, cdc);
-//						foreach (var data in completionList) {
-//							if (data is MemberCompletionData) 
-//								((MemberCompletionData)data).IsDelegateExpected = true;
-//						}
-//						return completionList;
-//					}
-					return null;
-				case "+=":
-				case "-=":
-					GetPreviousToken (ref tokenIndex, false);
-					
-					expressionOrVariableDeclaration = GetExpressionAt (tokenIndex);
-					if (expressionOrVariableDeclaration == null)
-						return null;
-				
-					resolveResult = ResolveExpression (expressionOrVariableDeclaration.Item1, expressionOrVariableDeclaration.Item2, expressionOrVariableDeclaration.Item3);
-					if (resolveResult == null)
-						return null;
-					
-					
-					var mrr = resolveResult.Item1 as MemberResolveResult;
-					if (mrr != null) {
-						var evt = mrr.Member as IEvent;
-						if (evt == null)
-							return null;
-						var delegateType = evt.ReturnType.Resolve (ctx);
-						if (!delegateType.IsDelegate ())
-							return null;
-						
-						var wrapper = new CompletionDataWrapper (this);
-						if (currentType != null) {
-//							bool includeProtected = DomType.IncludeProtected (dom, typeFromDatabase, resolver.CallingType);
-							foreach (var method in currentType.GetMethods (ctx)) {
-								if (MatchDelegate (delegateType, method) /*&& method.IsAccessibleFrom (dom, resolver.CallingType, resolver.CallingMember, includeProtected) &&*/) {
-									wrapper.AddMember (method);
-//									data.SetText (data.CompletionText + ";");
-								}
-							}
-						}
-						if (token == "+=") {
-							string parameterDefinition = AddDelegateHandlers (wrapper, delegateType);
-							string varName = GetPreviousMemberReferenceExpression (tokenIndex);
-							wrapper.Result.Add (factory.CreateEventCreationCompletionData (varName, delegateType, evt, parameterDefinition, currentMember, currentType));
-						}
-					
-						return wrapper.Result;
-					}
-					return null;
-				case ":":
-					if (currentMember == null) {
-						var wrapper = new CompletionDataWrapper (this);
-						AddTypesAndNamespaces (wrapper, GetState (), null, t => currentType != null ? !currentType.Equals (t) : true);
-						return wrapper.Result;
-					}
-					return null;
-				}
-				
-				var keywordCompletion = HandleKeywordCompletion (tokenIndex, token);
-				if (keywordCompletion == null && controlSpace)
-					goto default;
-				return keywordCompletion;
-			// Automatic completion
-			default:
-				if (IsInsideComment () || IsInsideString ())
-					return null;
-				var identifierStart = GetExpressionAtCursor ();
-				if (IsInLinqContext (offset)) {
-					tokenIndex = offset;
-					token = GetPreviousToken (ref tokenIndex, false); // token last typed
-					if (linqKeywords.Contains (token)) {
-						if (token == "from") // after from no auto code completion.
-							return null;
-						return DefaultControlSpaceItems ();
-					}
-					var dataList = new CompletionDataWrapper (this);
-					AddKeywords (dataList, linqKeywords);
-					return dataList.Result;
-				}
-					
-				if (!(char.IsLetter (completionChar) || completionChar == '_') && (identifierStart == null || !(identifierStart.Item2 is ArrayInitializerExpression)))
-					return controlSpace ? DefaultControlSpaceItems () : null;
-				char prevCh = offset > 2 ? document.GetCharAt (offset - 2) : '\0';
-				char nextCh = offset < document.TextLength ? document.GetCharAt (offset) : ' ';
-				const string allowedChars = ";,[(){}+-*/%^?:&|~!<>=";
-				if (!Char.IsWhiteSpace (nextCh) && allowedChars.IndexOf (nextCh) < 0)
-					return null;
-				if (!(Char.IsWhiteSpace (prevCh) || allowedChars.IndexOf (prevCh) >= 0))
-					return null;
-				// Do not pop up completion on identifier identifier (should be handled by keyword completion).
-				tokenIndex = offset - 1;
-				token = GetPreviousToken (ref tokenIndex, false);
-				if (string.IsNullOrEmpty (token) && !(IsInsideComment (tokenIndex) || IsInsideString (tokenIndex))) {
-					char last = token [token.Length - 1];
-					if (!char.IsLetterOrDigit (last) && last != '_')
-						return null;
-				}
-				
-				if (identifierStart == null)
-					return null;
-				
-				CSharpResolver csResolver;
-				AstNode n = identifierStart.Item2;
-				var contextList = new CompletionDataWrapper (this);
-				if (n is ArrayInitializerExpression) {
-					var initalizerResult = ResolveExpression (identifierStart.Item1, n.Parent, identifierStart.Item3);
-					if (initalizerResult != null) {
-						foreach (var property in initalizerResult.Item1.Type.GetProperties (ctx)) {
-							if (!property.IsPublic)
-								continue;
-							contextList.AddMember (property);
-						}
-						foreach (var field in initalizerResult.Item1.Type.GetProperties (ctx)){
-							if (!field.IsPublic)
-								continue;
-							contextList.AddMember (field);
-						}
-						return contextList.Result;
-					}
-					return null;
-				}
-				
-				if (n != null/* && !(identifierStart.Item2 is TypeDeclaration)*/) {
-					csResolver = new CSharpResolver (ctx, System.Threading.CancellationToken.None);
-					var nodes = new List<AstNode> ();
-					nodes.Add (n);
-					if (n.Parent is ICSharpCode.NRefactory.CSharp.Attribute)
-						nodes.Add (n.Parent);
-					var navigator = new NodeListResolveVisitorNavigator (nodes);
-					var visitor = new ResolveVisitor (csResolver, identifierStart.Item1, navigator);
-					visitor.Scan (identifierStart.Item3);
-					try {
-						csResolver = visitor.GetResolverStateBefore (n);
-					} catch (Exception) {
-						csResolver = GetState ();
-					}
-					// add attribute properties.
-					if (n.Parent is ICSharpCode.NRefactory.CSharp.Attribute) {
-						var resolved = visitor.GetResolveResult (n.Parent);
-						if (resolved != null && resolved.Type != null) {
-							foreach (var property in resolved.Type.GetProperties (ctx).Where (p => p.Accessibility == Accessibility.Public)) {
-								contextList.AddMember (property);
-							}
-							foreach (var field in resolved.Type.GetFields (ctx).Where (p => p.Accessibility == Accessibility.Public)) {
-								contextList.AddMember (field);
-							}
-						}
-					}
-				} else {
-					csResolver = GetState ();
-				}
-				
-				// identifier has already started with the first letter
-				offset--;
-				
-				AddContextCompletion (contextList, csResolver, identifierStart.Item2);
-				return contextList.Result;
-//				if (stub.Parent is BlockStatement)
-				
-//				result = FindExpression (dom, completionContext, -1);
-//				if (result == null)
-//					return null;
-//				 else if (result.ExpressionContext != ExpressionContext.IdentifierExpected) {
-//					triggerWordLength = 1;
-//					bool autoSelect = true;
-//					IType returnType = null;
-//					if ((prevCh == ',' || prevCh == '(') && GetParameterCompletionCommandOffset (out cpos)) {
-//						ctx = CompletionWidget.CreateCodeCompletionContext (cpos);
-//						NRefactoryParameterDataProvider dataProvider = ParameterCompletionCommand (ctx) as NRefactoryParameterDataProvider;
-//						if (dataProvider != null) {
-//							int i = dataProvider.GetCurrentParameterIndex (CompletionWidget, ctx) - 1;
-//							foreach (var method in dataProvider.Methods) {
-//								if (i < method.Parameters.Count) {
-//									returnType = dom.GetType (method.Parameters [i].ReturnType);
-//									autoSelect = returnType == null || returnType.ClassType != ClassType.Delegate;
-//									break;
-//								}
-//							}
-//						}
-//					}
-//					// Bug 677531 - Auto-complete doesn't always highlight generic parameter in method signature
-//					//if (result.ExpressionContext == ExpressionContext.TypeName)
-//					//	autoSelect = false;
-//					CompletionDataList dataList = CreateCtrlSpaceCompletionData (completionContext, result);
-//					AddEnumMembers (dataList, returnType);
-//					dataList.AutoSelect = autoSelect;
-//					return dataList;
-//				} else {
-//					result = FindExpression (dom, completionContext, 0);
-//					tokenIndex = offset;
-//					
-//					// check foreach case, unfortunately the expression finder is too dumb to handle full type names
-//					// should be overworked if the expression finder is replaced with a mcs ast based analyzer.
-//					var possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // starting letter
-//					possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // varname
-//				
-//					// read return types to '(' token
-//					possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // varType
-//					if (possibleForeachToken == ">") {
-//						while (possibleForeachToken != null && possibleForeachToken != "(") {
-//							possibleForeachToken = GetPreviousToken (ref tokenIndex, false);
-//						}
-//					} else {
-//						possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // (
-//						if (possibleForeachToken == ".")
-//							while (possibleForeachToken != null && possibleForeachToken != "(")
-//								possibleForeachToken = GetPreviousToken (ref tokenIndex, false);
-//					}
-//					possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // foreach
-//				
-//					if (possibleForeachToken == "foreach") {
-//						result.ExpressionContext = ExpressionContext.ForeachInToken;
-//					} else {
-//						return null;
-//						//								result.ExpressionContext = ExpressionContext.IdentifierExpected;
-//					}
-//					result.Expression = "";
-//					result.Region = DomRegion.Empty;
-//				
-//					return CreateCtrlSpaceCompletionData (completionContext, result);
-//				}
-//				break;
-			}
-			return null;
-		}
-
-		bool IsInLinqContext (int offset)
-		{
-			string token;
-			while (null != (token = GetPreviousToken (ref offset, true))) {
-				if (token == "from")
-					return true;
-				if (token == ";")
-					return false;
-			}
-			return false;
-		}
-		
-		IEnumerable<ICompletionData> DefaultControlSpaceItems ()
-		{
-			var wrapper = new CompletionDataWrapper (this);
-			
-			var node = Unit.GetNodeAt (location);
-			var rr = ResolveExpression (CSharpParsedFile, node, Unit);
-			AddContextCompletion (wrapper, rr != null ? rr.Item2 : GetState (), node);
-			
-			return wrapper.Result;
-		}
-		
-		void AddContextCompletion (CompletionDataWrapper wrapper, CSharpResolver state, AstNode node)
-		{
-			if (state == null) 
-				return;
-			foreach (var variable in state.LocalVariables) {
-				wrapper.AddVariable (variable);
-			}
-			if (state.CurrentMember is IParameterizedMember) {
-				var param = (IParameterizedMember)state.CurrentMember;
-				foreach (var p in param.Parameters) {
-					wrapper.AddVariable (p);
-				}
-			}
-			
-			if (state.CurrentMember is IMethod) {
-				var method = (IMethod)state.CurrentMember;
-				foreach (var p in method.TypeParameters) {
-					wrapper.AddTypeParameter (p);
-				}
-			}
-			Predicate<ITypeDefinition> typePred = null;
-			if (node is Attribute) {
-				var attribute = ctx.GetTypeDefinition ("System", "Attribute", 0, StringComparer.Ordinal);
-				typePred = t => t.GetAllBaseTypeDefinitions (ctx).Any (bt => bt.Equals (attribute));
-			}
-			AddTypesAndNamespaces (wrapper, state, node, typePred);
-			
-			wrapper.Result.Add (factory.CreateLiteralCompletionData ("global"));
-			if (state.CurrentMember != null) {
-				AddKeywords (wrapper, statementStartKeywords);
-				AddKeywords (wrapper, expressionLevelKeywords);
-			} else if (state.CurrentTypeDefinition != null) {
-				AddKeywords (wrapper, typeLevelKeywords);
-			} else {
-				AddKeywords (wrapper, globalLevelKeywords);
-			}
-			
-			if (IsInSwitchContext(node)) {
-				wrapper.AddCustom ("case"); 
-				wrapper.AddCustom ("default"); 
-			}
-			
-			AddKeywords (wrapper, primitiveTypesKeywords);
-			wrapper.Result.AddRange (factory.CreateCodeTemplateCompletionData ());
-		}
-		
-		static bool IsInSwitchContext(AstNode node)
-		{
-			var n = node;
-			while (n != null && !(n is MemberDeclaration)) {
-				Console.WriteLine (n.GetType ());
-				if (n is SwitchStatement)
-					return true;
-				if (n is BlockStatement)
-					return false;
-				n = n.Parent;
-			}
-			return false;
-		}
-		
-		void AddTypesAndNamespaces (CompletionDataWrapper wrapper, CSharpResolver state, AstNode node, Predicate<ITypeDefinition> typePred = null, Predicate<IMember> memberPred = null)
-		{
-			var currentType = state.CurrentTypeDefinition ?? this.currentType;
-			var currentMember = state.CurrentMember ?? this.currentMember;
-			if (currentType != null) {
-				for (var ct = currentType; ct != null; ct = ct.DeclaringTypeDefinition) {
-					foreach (var nestedType in ct.NestedTypes) {
-						if (typePred == null || typePred (nestedType)) {
-							string name = nestedType.Name;
-							if (node is Attribute && name.EndsWith ("Attribute") && name.Length > "Attribute".Length)
-								name = name.Substring (0, name.Length - "Attribute".Length);
-							wrapper.AddType (nestedType, name);
-						}
-					}
-				}
-				if (currentMember !=  null) {
-					foreach (var member in currentType.Resolve (ctx).GetMembers (ctx)) {
-						if (memberPred == null || memberPred (member))
-							wrapper.AddMember (member);
-					}
-				}
-				foreach (var p in currentType.TypeParameters) {
-					wrapper.AddTypeParameter (p);
-				}
-			}
-			
-			for (var n = state.CurrentUsingScope; n != null; n = n.Parent) {
-				foreach (var pair in n.UsingAliases) {
-					wrapper.AddNamespace ("", pair.Key);
-				}
-				
-				foreach (var u in n.Usings) {
-					var ns = u.ResolveNamespace (ctx);
-					if (ns == null)
-						continue;
-					foreach (var type in ctx.GetTypes (ns.NamespaceName, StringComparer.Ordinal)) {
-						if (typePred == null || typePred (type)) {
-							string name = type.Name;
-							if (node is Attribute && name.EndsWith ("Attribute") && name.Length > "Attribute".Length)
-								name = name.Substring (0, name.Length - "Attribute".Length);
-							wrapper.AddType (type, name);
-						}
-					}
-				}
-				
-				foreach (var type in ctx.GetTypes (n.NamespaceName, StringComparer.Ordinal)) {
-					if (typePred == null || typePred (type)) {
-						wrapper.AddType (type, type.Name);
-					}
-				}
-				
-				foreach (var curNs in ctx.GetNamespaces ().Where (sn => sn.StartsWith (n.NamespaceName) && sn != n.NamespaceName)) {
-					wrapper.AddNamespace (n.NamespaceName, curNs);
-				}
-			}
-		}
-		
-		IEnumerable<ICompletionData> HandleKeywordCompletion (int wordStart, string word)
-		{
-			if (IsInsideComment () || IsInsideString ())
-				return null;
-			switch (word) {
-			case "using":
-			case "namespace":
-				if (currentType != null)
-					return null;
-				var wrapper = new CompletionDataWrapper (this);
-				AddTypesAndNamespaces (wrapper, GetState (), null, t => false);
-				return wrapper.Result;
-				case "case":
-					return CreateCaseCompletionData (location);
-//				case ",":
-//				case ":":
-//					if (result.ExpressionContext == ExpressionContext.InheritableType) {
-//						IType cls = NRefactoryResolver.GetTypeAtCursor (Document.CompilationUnit, Document.FileName, new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));
-//						CompletionDataList completionList = new ProjectDomCompletionDataList ();
-//						List<string > namespaceList = GetUsedNamespaces ();
-//						var col = new CSharpTextEditorCompletion.CompletionDataCollector (this, dom, completionList, Document.CompilationUnit, null, location);
-//						bool isInterface = false;
-//						HashSet<string > baseTypeNames = new HashSet<string> ();
-//						if (cls != null) {
-//							baseTypeNames.Add (cls.Name);
-//							if (cls.ClassType == ClassType.Struct)
-//								isInterface = true;
-//						}
-//						int tokenIndex = offset;
-//	
-//						// Search base types " : [Type1, ... ,TypeN,] <Caret>"
-//						string token = null;
-//						do {
-//							token = GetPreviousToken (ref tokenIndex, false);
-//							if (string.IsNullOrEmpty (token))
-//								break;
-//							token = token.Trim ();
-//							if (Char.IsLetterOrDigit (token [0]) || token [0] == '_') {
-//								IType baseType = dom.SearchType (Document.CompilationUnit, cls, result.Region.Start, token);
-//								if (baseType != null) {
-//									if (baseType.ClassType != ClassType.Interface)
-//										isInterface = true;
-//									baseTypeNames.Add (baseType.Name);
-//								}
-//							}
-//						} while (token != ":");
-//						foreach (object o in dom.GetNamespaceContents (namespaceList, true, true)) {
-//							IType type = o as IType;
-//							if (type != null && (type.IsStatic || type.IsSealed || baseTypeNames.Contains (type.Name) || isInterface && type.ClassType != ClassType.Interface)) {
-//								continue;
-//							}
-//							if (o is Namespace && !namespaceList.Any (ns => ns.StartsWith (((Namespace)o).FullName)))
-//								continue;
-//							col.Add (o);
-//						}
-//						// Add inner classes
-//						Stack<IType > innerStack = new Stack<IType> ();
-//						innerStack.Push (cls);
-//						while (innerStack.Count > 0) {
-//							IType curType = innerStack.Pop ();
-//							if (curType == null)
-//								continue;
-//							foreach (IType innerType in curType.InnerTypes) {
-//								if (innerType != cls)
-//									// don't add the calling class as possible base type
-//									col.Add (innerType);
-//							}
-//							if (curType.DeclaringType != null)
-//								innerStack.Push (curType.DeclaringType);
-//						}
-//						return completionList;
-//					}
-//					break;
-			case "is":
-			case "as":
-				if (currentType == null)
-					return null;
-				IType isAsType = null;
-				var isAsExpression = GetExpressionAt (wordStart);
-				if (isAsExpression != null) {
-					var parent = isAsExpression.Item2.Parent;
-					if (parent is VariableInitializer)
-						parent = parent.Parent;
-					if (parent is VariableDeclarationStatement) {
-						var resolved = ResolveExpression (isAsExpression.Item1, parent, isAsExpression.Item3);
-						if (resolved != null)
-							isAsType = resolved.Item1.Type;
-					}
-				}
-				
-				var isAsWrapper = new CompletionDataWrapper (this);
-				AddTypesAndNamespaces (isAsWrapper, GetState (), null, t => isAsType == null || t.IsDerivedFrom (isAsType.GetDefinition (), ctx));
-				return isAsWrapper.Result;
-//					{
-//						CompletionDataList completionList = new ProjectDomCompletionDataList ();
-//						ExpressionResult expressionResult = FindExpression (dom, completionContext, wordStart - document.Caret.Offset);
-//						NRefactoryResolver resolver = CreateResolver ();
-//						ResolveResult resolveResult = resolver.Resolve (expressionResult, new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));
-//						if (resolveResult != null && resolveResult.ResolvedType != null) {
-//							CompletionDataCollector col = new CompletionDataCollector (this, dom, completionList, Document.CompilationUnit, resolver.CallingType, location);
-//							IType foundType = null;
-//							if (word == "as") {
-//								ExpressionContext exactContext = new NewCSharpExpressionFinder (dom).FindExactContextForAsCompletion (document, Document.CompilationUnit, Document.FileName, resolver.CallingType);
-//								if (exactContext is ExpressionContext.TypeExpressionContext) {
-//									foundType = resolver.SearchType (((ExpressionContext.TypeExpressionContext)exactContext).Type);
-//									AddAsCompletionData (col, foundType);
-//								}
-//							}
-//						
-//							if (foundType == null)
-//								foundType = resolver.SearchType (resolveResult.ResolvedType);
-//						
-//							if (foundType != null) {
-//								if (foundType.ClassType == ClassType.Interface)
-//									foundType = resolver.SearchType (DomReturnType.Object);
-//							
-//								foreach (IType type in dom.GetSubclasses (foundType)) {
-//									if (type.IsSpecialName || type.Name.StartsWith ("<"))
-//										continue;
-//									AddAsCompletionData (col, type);
-//								}
-//							}
-//							List<string > namespaceList = GetUsedNamespaces ();
-//							foreach (object o in dom.GetNamespaceContents (namespaceList, true, true)) {
-//								if (o is IType) {
-//									IType type = (IType)o;
-//									if (type.ClassType != ClassType.Interface || type.IsSpecialName || type.Name.StartsWith ("<"))
-//										continue;
-//	//								if (foundType != null && !dom.GetInheritanceTree (foundType).Any (x => x.FullName == type.FullName))
-//	//									continue;
-//									AddAsCompletionData (col, type);
-//									continue;
-//								}
-//								if (o is Namespace)
-//									continue;
-//								col.Add (o);
-//							}
-//							return completionList;
-//						}
-//						result.ExpressionContext = ExpressionContext.TypeName;
-//						return CreateCtrlSpaceCompletionData (completionContext, result);
-//					}
-			case "override":
-				// Look for modifiers, in order to find the beginning of the declaration
-				int firstMod = wordStart;
-				int i = wordStart;
-				for (int n = 0; n < 3; n++) {
-					string mod = GetPreviousToken (ref i, true);
-					if (mod == "public" || mod == "protected" || mod == "private" || mod == "internal" || mod == "sealed") {
-						firstMod = i;
-					} else if (mod == "static") {
-						// static methods are not overridable
-						return null;
-					} else
-						break;
-				}
-				if (!IsLineEmptyUpToEol ())
-					return null;
-				var overrideCls = CSharpParsedFile.GetInnermostTypeDefinition (location);
-								
-				if (overrideCls != null && (overrideCls.Kind == TypeKind.Class || overrideCls.Kind == TypeKind.Struct)) {
-					string modifiers = document.GetText (firstMod, wordStart - firstMod);
-					return GetOverrideCompletionData (overrideCls, modifiers);
-				}
-				return null;
-//				case "partial":
-//					// Look for modifiers, in order to find the beginning of the declaration
-//					firstMod = wordStart;
-//					i = wordStart;
-//					for (int n = 0; n < 3; n++) {
-//						string mod = GetPreviousToken (ref i, true);
-//						if (mod == "public" || mod == "protected" || mod == "private" || mod == "internal" || mod == "sealed") {
-//							firstMod = i;
-//						} else if (mod == "static") {
-//							// static methods are not overridable
-//							return null;
-//						} else
-//							break;
-//					}
-//					if (!IsLineEmptyUpToEol ())
-//						return null;
-//					
-//					overrideCls = NRefactoryResolver.GetTypeAtCursor (Document.CompilationUnit, Document.FileName, new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));
-//					if (overrideCls != null && (overrideCls.ClassType == ClassType.Class || overrideCls.ClassType == ClassType.Struct)) {
-//						string modifiers = document.GetTextBetween (firstMod, wordStart);
-//						return GetPartialCompletionData (completionContext, overrideCls, modifiers);
-//					}
-//					return null;
-//					
-			case "public":
-			case "protected":
-			case "private":
-			case "internal":
-			case "sealed":
-			case "static":
-				wrapper = new CompletionDataWrapper (this);
-				var state = GetState ();
-				AddTypesAndNamespaces (wrapper, state, null, m => false);
-				AddKeywords (wrapper, typeLevelKeywords);
-				AddKeywords (wrapper, primitiveTypesKeywords);
-				return wrapper.Result;
-			case "new":
-				int j = offset - 4;
-//				string token = GetPreviousToken (ref j, true);
-				
-				IType hintType = null;
-				var expressionOrVariableDeclaration = GetExpressionAt (j);
-				if (expressionOrVariableDeclaration != null && expressionOrVariableDeclaration.Item2 is VariableDeclarationStatement) {
-					var varDecl = (VariableDeclarationStatement)expressionOrVariableDeclaration.Item2;
-					var resolved = ResolveExpression (expressionOrVariableDeclaration.Item1, varDecl.Type, expressionOrVariableDeclaration.Item3);
-					if (resolved != null) {
-						hintType = resolved.Item1.Type;
-					}
-				}
-				return CreateTypeCompletionData (hintType);
-//					IType callingType = NRefactoryResolver.GetTypeAtCursor (Document.CompilationUnit, Document.FileName, new TextLocation (document.Caret.Line, document.Caret.Column));
-//					ExpressionContext newExactContext = new NewCSharpExpressionFinder (dom).FindExactContextForNewCompletion (document, Document.CompilationUnit, Document.FileName, callingType);
-//					if (newExactContext is ExpressionContext.TypeExpressionContext)
-//						return CreateTypeCompletionData (location, callingType, newExactContext, ((ExpressionContext.TypeExpressionContext)newExactContext).Type, ((ExpressionContext.TypeExpressionContext)newExactContext).UnresolvedType);
-//					if (newExactContext == null) {
-//						int j = offset - 4;
-//						
-//						string yieldToken = GetPreviousToken (ref j, true);
-//						if (token == "return") {
-//							NRefactoryResolver resolver = CreateResolver ();
-//							resolver.SetupResolver (new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));
-//							IReturnType returnType = resolver.CallingMember.ReturnType;
-//							if (yieldToken == "yield" && returnType.GenericArguments.Count > 0)
-//								returnType = returnType.GenericArguments [0];
-//							if (resolver.CallingMember != null)
-//								return CreateTypeCompletionData (location, callingType, newExactContext, null, returnType);
-//						}
-//					}
-//					return CreateCtrlSpaceCompletionData (completionContext, null);
-//				case "if":
-//				case "elif":
-//					if (stateTracker.Engine.IsInsidePreprocessorDirective) 
-//						return GetDefineCompletionData ();
-//					return null;
-			case "yield":
-				var yieldDataList = new CompletionDataWrapper (this);
-				DefaultCompletionString = "return";
-				yieldDataList.AddCustom ("break");
-				yieldDataList.AddCustom ("return");
-				return yieldDataList.Result;
-			case "in":
-				var inList = new CompletionDataWrapper (this);
-				var node = Unit.GetNodeAt (location);
-				var rr = ResolveExpression (CSharpParsedFile, node, Unit);
-				AddContextCompletion (inList, rr != null ? rr.Item2 : GetState (), node);
-				return inList.Result;
-//				case "where":
-//					CompletionDataList whereDataList = new CompletionDataList ();
-//					NRefactoryResolver constraintResolver = CreateResolver ();
-//					constraintResolver.SetupResolver (new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));
-//					if (constraintResolver.CallingMember is IMethod) {
-//						foreach (ITypeParameter tp in ((IMethod)constraintResolver.CallingMember).TypeParameters) {
-//							whereDataList.Add (tp.Name, "md-keyword");
-//						}
-//					} else {
-//						if (constraintResolver.CallingType != null) {
-//							foreach (ITypeParameter tp in constraintResolver.CallingType.TypeParameters) {
-//								whereDataList.Add (tp.Name, "md-keyword");
-//							}
-//						}
-//					}
-//	
-//					return whereDataList;
-			}
-//				if (IsInLinqContext (result)) {
-//					if (linqKeywords.Contains (word)) {
-//						if (word == "from") // after from no auto code completion.
-//							return null;
-//						result.Expression = "";
-//						return CreateCtrlSpaceCompletionData (completionContext, result);
-//					}
-//					CompletionDataList dataList = new ProjectDomCompletionDataList ();
-//					CompletionDataCollector col = new CompletionDataCollector (this, dom, dataList, Document.CompilationUnit, null, new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));
-//					foreach (string kw in linqKeywords) {
-//						col.Add (kw, "md-keyword");
-//					}
-//					return dataList;
-//				}
-			return null;
-		}
-		
-		bool IsLineEmptyUpToEol ()
-		{
-			var line = document.GetLineByNumber (location.Line);
-			for (int j = offset; j < line.EndOffset; j++) {
-				char ch = document.GetCharAt (j);
-				if (!char.IsWhiteSpace (ch))
-					return false;
-			}
-			return true;
-		}
-		string GetLineIndent (int lineNr)
-		{
-			var line = document.GetLineByNumber (lineNr);
-			for (int j = offset; j < line.EndOffset; j++) {
-				char ch = document.GetCharAt (j);
-				if (!char.IsWhiteSpace (ch))
-					return document.GetText (line.Offset, j - line.Offset - 1);
-			}
-			return "";
-		}
-		
-		IEnumerable<ICompletionData> CreateTypeCompletionData (IType hintType)
-		{
-			var wrapper = new CompletionDataWrapper (this);
-			var state = GetState ();
-			Predicate<ITypeDefinition> pred = null;
-			if (hintType != null && !hintType.Equals (SharedTypes.UnknownType)) {
-				var lookup = new MemberLookup (ctx, currentType, ProjectContent);
-				pred = t => {
-					// check if type is in inheritance tree.
-					if (hintType.GetDefinition () != null && !t.IsDerivedFrom (hintType.GetDefinition (), ctx))
-						return false;
-					// check for valid constructors
-					if (t.Methods.Count (m => m.IsConstructor) == 0)
-						return true;
-					bool isProtectedAllowed = currentType != null ? currentType.IsDerivedFrom (t, ctx) : false;
-					return t.Methods.Any (m => m.IsConstructor && lookup.IsAccessible (m, isProtectedAllowed));
-				};
-				DefaultCompletionString = GetShortType (hintType, GetState ());
-				wrapper.AddType (hintType, DefaultCompletionString);
-			}
-			AddTypesAndNamespaces (wrapper, state, null, pred, m => false);
-			AddKeywords (wrapper, primitiveTypesKeywords.Where (k => k != "void"));
-			AutoCompleteEmptyMatch = true;
-			return wrapper.Result;
-		}
-		
-		IEnumerable<ICompletionData> GetOverrideCompletionData (ITypeDefinition type, string modifiers)
-		{
-			var wrapper = new CompletionDataWrapper (this);
-			var alreadyInserted = new Dictionary<string, bool> ();
-			bool addedVirtuals = false;
-			
-			int declarationBegin = offset;
-			int j = declarationBegin;
-			for (int i = 0; i < 3; i++) {
-				switch (GetPreviousToken (ref j, true)) {
-				case "public":
-				case "protected":
-				case "private":
-				case "internal":
-				case "sealed":
-				case "override":
-					declarationBegin = j;
-					break;
-				case "static":
-					return null; // don't add override completion for static members
-				}
-			}
-			foreach (var baseType in type.GetAllBaseTypeDefinitions (ctx)) {
-				AddVirtuals (alreadyInserted, wrapper, type, modifiers, baseType, declarationBegin);
-				addedVirtuals = true;
-			}
-			if (!addedVirtuals)
-				AddVirtuals (alreadyInserted, wrapper, type, modifiers, ctx.GetTypeDefinition (typeof(object)), declarationBegin);
-			return wrapper.Result;
-		}
-		
-		static string GetNameWithParamCount (IMember member)
-		{
-			var e = member as IMethod;
-			if (e == null || e.TypeParameters.Count == 0)
-				return member.Name;
-			return e.Name + "`" + e.TypeParameters.Count;
-		}
-		
-		void AddVirtuals (Dictionary<string, bool> alreadyInserted, CompletionDataWrapper col, ITypeDefinition type, string modifiers, ITypeDefinition curType, int declarationBegin)
-		{
-			if (curType == null)
-				return;
-			foreach (var m in curType.Methods.Where (m => !m.IsConstructor && !m.IsDestructor).Cast<IMember> ().Concat (curType.Properties.Cast<IMember> ())) {
-				if (m.IsSynthetic || curType.Kind != TypeKind.Interface && !(m.IsVirtual || m.IsOverride || m.IsAbstract))
-					continue;
-				// filter out the "Finalize" methods, because finalizers should be done with destructors.
-				if (m is IMethod && m.Name == "Finalize")
-					continue;
-				
-				var data = factory.CreateNewOverrideCompletionData (declarationBegin, type, m);
-				string text = GetNameWithParamCount (m);
-				
-				// check if the member is already implemented
-				bool foundMember = type.Members.Any (cm => GetNameWithParamCount (cm) == text);
-				if (!foundMember && !alreadyInserted.ContainsKey (text)) {
-					alreadyInserted [text] = true;
-					data.CompletionCategory = col.GetCompletionCategory (curType);
-					col.Add (data);
-				}
-			}
-		}
-		
-		static void AddKeywords (CompletionDataWrapper wrapper, IEnumerable<string> keywords)
-		{
-			foreach (string keyword in keywords) {
-				wrapper.AddCustom (keyword);
-			}
-		}
-		
-		public string GetPreviousMemberReferenceExpression (int tokenIndex)
-		{
-			string result = GetPreviousToken (ref tokenIndex, false);
-			result = GetPreviousToken (ref tokenIndex, false);
-			if (result != ".") {
-				result = null;
-			} else {
-				var names = new List<string> ();
-				while (result == ".") {
-					result = GetPreviousToken (ref tokenIndex, false);
-					if (result == "this") {
-						names.Add ("handle");
-					} else if (result != null) {
-						string trimmedName = result.Trim ();
-						if (trimmedName.Length == 0)
-							break;
-						names.Insert (0, trimmedName);
-					}
-					result = GetPreviousToken (ref tokenIndex, false);
-				}
-				result = String.Join ("", names.ToArray ());
-				foreach (char ch in result) {
-					if (!char.IsLetterOrDigit (ch) && ch != '_') {
-						result = "";
-						break;
-					}
-				}
-			}
-			return result;
-		}
-		
-		bool MatchDelegate (IType delegateType, IMethod method)
-		{
-			var delegateMethod = delegateType.GetDelegateInvokeMethod ();
-			if (delegateMethod == null || delegateMethod.Parameters.Count != method.Parameters.Count)
-				return false;
-			
-			for (int i = 0; i < delegateMethod.Parameters.Count; i++) {
-				if (!delegateMethod.Parameters [i].Type.Resolve (ctx).Equals (method.Parameters [i].Type.Resolve (ctx)))
-					return false;
-			}
-			return true;
-		}
-
-		string AddDelegateHandlers (CompletionDataWrapper completionList, IType delegateType, bool addSemicolon = true, bool addDefault = true)
-		{
-			IMethod delegateMethod = delegateType.GetDelegateInvokeMethod ();
-			var thisLineIndent = GetLineIndent (location.Line);
-			string delegateEndString = EolMarker + thisLineIndent + "}" + (addSemicolon ? ";" : "");
-			bool containsDelegateData = completionList.Result.Any (d => d.DisplayText.StartsWith ("delegate("));
-			if (addDefault)
-				completionList.AddCustom ("delegate", "Creates anonymous delegate.", "delegate {" + EolMarker + thisLineIndent + IndentString + "|" + delegateEndString);
-			var sb = new StringBuilder ("(");
-			var sbWithoutTypes = new StringBuilder ("(");
-			for (int k = 0; k < delegateMethod.Parameters.Count; k++) {
-				if (k > 0) {
-					sb.Append (", ");
-					sbWithoutTypes.Append (", ");
-				}
-				var parameterType = delegateMethod.Parameters [k].Type.Resolve (ctx);
-				sb.Append (GetShortType (parameterType, GetState ()));
-				sb.Append (" ");
-				sb.Append (delegateMethod.Parameters [k].Name);
-				sbWithoutTypes.Append (delegateMethod.Parameters [k].Name);
-			}
-			sb.Append (")");
-			sbWithoutTypes.Append (")");
-			completionList.AddCustom ("delegate" + sb, "Creates anonymous delegate.", "delegate" + sb + " {" + EolMarker + thisLineIndent + IndentString + "|" + delegateEndString);
-			if (!completionList.Result.Any (data => data.DisplayText == sbWithoutTypes.ToString ()))
-				completionList.AddCustom (sbWithoutTypes.ToString (), "Creates lambda expression.", sbWithoutTypes + " => |" + (addSemicolon ? ";" : ""));
-			/* TODO:Make factory method out of it.
-			// It's  needed to temporarly disable inserting auto matching bracket because the anonymous delegates are selectable with '('
-			// otherwise we would end up with () => )
-			if (!containsDelegateData) {
-				var savedValue = MonoDevelop.SourceEditor.DefaultSourceEditorOptions.Instance.AutoInsertMatchingBracket;
-				MonoDevelop.SourceEditor.DefaultSourceEditorOptions.Instance.AutoInsertMatchingBracket = false;
-				completionList.Result.CompletionListClosed += delegate {
-					MonoDevelop.SourceEditor.DefaultSourceEditorOptions.Instance.AutoInsertMatchingBracket = savedValue;
-				};
-			}*/
-			return sb.ToString ();
-		}
-		
-		bool IsAccessibleFrom (IEntity member, ITypeDefinition calledType, IMember currentMember, bool includeProtected)
-		{
-			if (currentMember == null)
-				return member.IsStatic || member.IsPublic;
-//			if (currentMember is MonoDevelop.Projects.Dom.BaseResolveResult.BaseMemberDecorator) 
-//				return member.IsPublic | member.IsProtected;
-			//		if (member.IsStatic && !IsStatic)
-			//			return false;
-			if (member.IsPublic || calledType != null && calledType.Kind == TypeKind.Interface && !member.IsProtected)
-				return true;
-			if (member.DeclaringTypeDefinition != null) {
-				if (member.DeclaringTypeDefinition.Kind == TypeKind.Interface) 
-					return IsAccessibleFrom (member.DeclaringTypeDefinition, calledType, currentMember, includeProtected);
-			
-				if (member.IsProtected && !(member.DeclaringTypeDefinition.IsProtectedOrInternal && !includeProtected))
-					return includeProtected;
-			}
-			if (member.IsInternal || member.IsProtectedAndInternal || member.IsProtectedOrInternal) {
-				var type1 = member is ITypeDefinition ? (ITypeDefinition)member : member.DeclaringTypeDefinition;
-				var type2 = currentMember is ITypeDefinition ? (ITypeDefinition)currentMember : currentMember.DeclaringTypeDefinition;
-				bool result;
-				// easy case, projects are the same
-				if (type1.ProjectContent == type2.ProjectContent) {
-					result = true; 
-				} else if (type1.ProjectContent != null) {
-					// maybe type2 hasn't project dom set (may occur in some cases), check if the file is in the project
-					//TODO !!
-//					result = type1.ProjectContent.Annotation<MonoDevelop.Projects.Project> ().GetProjectFile (type2.Region.FileName) != null;
-					result = false;
-				} else if (type2.ProjectContent != null) {
-					//TODO!!
-//					result = type2.ProjectContent.Annotation<MonoDevelop.Projects.Project> ().GetProjectFile (type1.Region.FileName) != null;
-					result = false;
-				} else {
-					// should never happen !
-					result = true;
-				}
-				return member.IsProtectedAndInternal ? includeProtected && result : result;
-			}
-			
-			if (!(currentMember is IType) && (currentMember.DeclaringTypeDefinition == null || member.DeclaringTypeDefinition == null))
-				return false;
-			
-			// inner class 
-			var declaringType = currentMember.DeclaringTypeDefinition;
-			while (declaringType != null) {
-				if (declaringType.ReflectionName == currentMember.DeclaringType.ReflectionName)
-					return true;
-				declaringType = declaringType.DeclaringTypeDefinition;
-			}
-			
-			
-			return currentMember.DeclaringTypeDefinition != null && member.DeclaringTypeDefinition.FullName == currentMember.DeclaringTypeDefinition.FullName;
-		}
-		
-		IEnumerable<ICompletionData> CreateTypeAndNamespaceCompletionData (TextLocation location, ResolveResult resolveResult, AstNode resolvedNode, CSharpResolver state)
-		{
-			if (resolveResult == null || resolveResult.IsError)
-				return null;
-			var result = new CompletionDataWrapper (this);
-			
-			if (resolveResult is NamespaceResolveResult) {
-				var nr = (NamespaceResolveResult)resolveResult;
-				foreach (var cl in ctx.GetTypes (nr.NamespaceName, StringComparer.Ordinal)) {
-					result.AddType (cl, cl.Name);
-				}
-				foreach (var ns in ctx.GetNamespaces ().Where (n => n.Length > nr.NamespaceName.Length && n.StartsWith (nr.NamespaceName))) {
-					result.AddNamespace (nr.NamespaceName, ns);
-				}
-			} else if (resolveResult is TypeResolveResult) {
-				var type = resolveResult.Type.Resolve (ctx);
-				foreach (var nested in type.GetNestedTypes (ctx)) {
-					result.AddType (nested, nested.Name);
-				}
-			}
-			return result.Result;
-		}
-		
-		IEnumerable<ICompletionData> CreateTypeList ()
-		{
-			foreach (var cl in ctx.GetTypes ("", StringComparer.Ordinal)) {
-				yield return factory.CreateTypeCompletionData (cl, cl.Name);
-			}
-			foreach (var ns in ctx.GetNamespaces ()) {
-				string name = ns;
-				int idx = name.IndexOf (".");
-				if (idx >= 0)
-					name = name.Substring (0, idx);
-				yield return factory.CreateNamespaceCompletionData (name);
-			}
-		}
-		
-		public ITypeDefinition GetTypeFromContext (ITypeDefinition type)
-		{
-			if (type == null || type.DeclaringType != null)
-				return type;
-			var result = ctx.GetTypeDefinition (type.Namespace, type.Name, type.TypeParameterCount, StringComparer.Ordinal) ?? type;
-			if (result.GetParts ().Count == 1)
-				return type;
-//			Console.WriteLine ("result:"+  result);
-			return result;
-		}
-		
-		IEnumerable<ICompletionData> CreateParameterCompletion (MethodGroupResolveResult resolveResult, CSharpResolver state, AstNode invocation, int parameter, bool controlSpace)
-		{
-			var result = new CompletionDataWrapper (this);
-			var addedEnums = new HashSet<string> ();
-			var addedDelegates = new HashSet<string> ();
-			
-			foreach (var method in resolveResult.Methods) {
-				if (method.Parameters.Count <= parameter)
-					continue;
-				var resolvedType = method.Parameters [parameter].Type.Resolve (ctx);
-				if (resolvedType.Kind == TypeKind.Enum) {
-					if (addedEnums.Contains (resolvedType.ReflectionName))
-						continue;
-					addedEnums.Add (resolvedType.ReflectionName);
-					AddEnumMembers (result, resolvedType, state);
-				} else if (resolvedType.Kind == TypeKind.Delegate) {
-//					if (addedDelegates.Contains (resolvedType.DecoratedFullName))
-//						continue;
-//					addedDelegates.Add (resolvedType.DecoratedFullName);
-//					string parameterDefinition = AddDelegateHandlers (completionList, resolvedType, false, addedDelegates.Count == 1);
-//					string varName = "Handle" + method.Parameters [parameter].ReturnType.Name + method.Parameters [parameter].Name;
-//					result.Add (new EventCreationCompletionData (document, varName, resolvedType, null, parameterDefinition, resolver.Unit.GetMemberAt (location), resolvedType) { AddSemicolon = false });
-				
-				}
-			}
-			if (!controlSpace) {
-				if (addedEnums.Count + addedDelegates.Count == 0)
-					return Enumerable.Empty<ICompletionData> ();
-				AutoCompleteEmptyMatch = false;
-				AutoSelect = false;
-			}
-			AddContextCompletion (result, state, invocation);
-			
-//			resolver.AddAccessibleCodeCompletionData (ExpressionContext.MethodBody, cdc);
-//			if (addedDelegates.Count > 0) {
-//				foreach (var data in result.Result) {
-//					if (data is MemberCompletionData) 
-//						((MemberCompletionData)data).IsDelegateExpected = true;
-//				}
-//			}
-			return result.Result;
-		}
-		
-		string GetShortType (IType type, CSharpResolver state)
-		{
-			var builder = new TypeSystemAstBuilder (state);
-			var shortType = builder.ConvertType (type);
-			using (var w = new System.IO.StringWriter ()) {
-				var visitor = new CSharpOutputVisitor (w, FormattingPolicy);
-				shortType.AcceptVisitor (visitor, null);
-				return w.ToString ();
-			}
-		}
-		
-		void AddEnumMembers (CompletionDataWrapper completionList, IType resolvedType, CSharpResolver state)
-		{
-			if (resolvedType.Kind != TypeKind.Enum)
-				return;
-			string typeString = GetShortType (resolvedType, state);
-			if (typeString.Contains ("."))
-				completionList.AddType (resolvedType, typeString);
-			foreach (var field in resolvedType.GetFields (ctx)) {
-				if (field.IsConst || field.IsStatic)
-					completionList.Result.Add (factory.CreateEntityCompletionData (field, typeString + "." + field.Name));
-			}
-			DefaultCompletionString = typeString;
-		}
-		
-		IEnumerable<ICompletionData> CreateCompletionData (TextLocation location, ResolveResult resolveResult, AstNode resolvedNode, CSharpResolver state)
-		{
-			if (resolveResult == null /*|| resolveResult.IsError*/)
-				return null;
-			if (resolveResult is NamespaceResolveResult) {
-				var nr = (NamespaceResolveResult)resolveResult;
-				var namespaceContents = new CompletionDataWrapper (this);
-				foreach (var cl in ctx.GetTypes (nr.NamespaceName, StringComparer.Ordinal)) {
-					namespaceContents.AddType (cl, cl.Name);
-				}
-				foreach (var ns in ctx.GetNamespaces ().Where (n => n.Length > nr.NamespaceName.Length && n.StartsWith (nr.NamespaceName))) {
-					namespaceContents.AddNamespace (nr.NamespaceName, ns);
-				}
-				
-				return namespaceContents.Result;
-			}
-			
-			IType type = GetTypeFromContext (resolveResult.Type.GetDefinition ()) ?? resolveResult.Type;
-			var typeDef = resolveResult.Type.GetDefinition ();
-			var lookup = new MemberLookup (ctx, currentType, ProjectContent);
-			var result = new CompletionDataWrapper (this);
-			bool isProtectedAllowed = false;
-			bool includeStaticMembers = false;
-			
-			if (resolveResult is LocalResolveResult) {
-				isProtectedAllowed = currentType != null && typeDef != null ? typeDef.GetAllBaseTypeDefinitions (ctx).Any (bt => bt.Equals (currentType)) : false;
-				if (resolvedNode is IdentifierExpression) {
-					var mrr = (LocalResolveResult)resolveResult;
-					includeStaticMembers = mrr.Variable.Name == mrr.Type.Name;
-				}
-			} else {
-				isProtectedAllowed = currentType != null && typeDef != null ? currentType.GetAllBaseTypeDefinitions (ctx).Any (bt => bt.Equals (typeDef)) : false;
-			}
-			if (resolveResult is TypeResolveResult && type.Kind == TypeKind.Enum) {
-				foreach (var field in type.GetFields (ctx)) {
-					result.AddMember (field);
-				}
-				foreach (var m in type.GetMethods (ctx)) {
-					if (m.Name == "TryParse")
-						result.AddMember (m);
-				}
-				return result.Result;
-			}
-			
-			if (resolveResult is MemberResolveResult && resolvedNode is IdentifierExpression) {
-				var mrr = (MemberResolveResult)resolveResult;
-				includeStaticMembers = mrr.Member.Name == mrr.Type.Name;
-			}
-			
-//			Console.WriteLine ("type:" + type +"/"+type.GetType ());
-//			Console.WriteLine ("IS PROT ALLOWED:" + isProtectedAllowed);
-//			Console.WriteLine (resolveResult);
-//			Console.WriteLine (currentMember !=  null ? currentMember.IsStatic : "currentMember == null");
-			if (resolvedNode.Annotation<ObjectCreateExpression> () == null) { //tags the created expression as part of an object create expression.
-				foreach (var member in type.GetMembers (ctx)) {
-					if (!lookup.IsAccessible (member, isProtectedAllowed)) {
-	//					Console.WriteLine ("skip access: " + member.FullName);
-						continue;
-					}
-					if (resolvedNode is BaseReferenceExpression && member.IsAbstract)
-						continue;
-					
-					if (!includeStaticMembers && member.IsStatic && !(resolveResult is TypeResolveResult)) {
-	//					Console.WriteLine ("skip static member: " + member.FullName);
-						continue;
-					}
-					if (!member.IsStatic && (resolveResult is TypeResolveResult)) {
-	//					Console.WriteLine ("skip non static member: " + member.FullName);
-						continue;
-					}
-	//				Console.WriteLine ("add : "+ member.FullName + " --- " + member.IsStatic);
-					result.AddMember (member);
-				}
-			}
-			
-			if (resolveResult is TypeResolveResult || includeStaticMembers) {
-				foreach (var nested in type.GetNestedTypes (ctx)) {
-					result.AddType (nested, nested.Name);
-				}
-				
-			} else {
-				var baseTypes = new List<IType> (type.GetAllBaseTypes (ctx));
-				var conv = new Conversions (ctx);
-				for (var n = state.CurrentUsingScope; n != null; n = n.Parent) {
-					AddExtensionMethods (result, conv, baseTypes, n.NamespaceName);
-					foreach (var u in n.Usings) {
-						var ns = u.ResolveNamespace (ctx);
-						if (ns == null)
-							continue;
-						AddExtensionMethods (result, conv, baseTypes, ns.NamespaceName);
-					}
-				}
-			}
-			
-//			IEnumerable<object> objects = resolveResult.CreateResolveResult (dom, resolver != null ? resolver.CallingMember : null);
-//			CompletionDataCollector col = new CompletionDataCollector (this, dom, result, Document.CompilationUnit, resolver != null ? resolver.CallingType : null, location);
-//			col.HideExtensionParameter = !resolveResult.StaticResolve;
-//			col.NamePrefix = expressionResult.Expression;
-//			bool showOnlyTypes = expressionResult.Contexts.Any (ctx => ctx == ExpressionContext.InheritableType || ctx == ExpressionContext.Constraints);
-//			if (objects != null) {
-//				foreach (object obj in objects) {
-//					if (expressionResult.ExpressionContext != null && expressionResult.ExpressionContext.FilterEntry (obj))
-//						continue;
-//					if (expressionResult.ExpressionContext == ExpressionContext.NamespaceNameExcepted && !(obj is Namespace))
-//						continue;
-//					if (showOnlyTypes && !(obj is IType))
-//						continue;
-//					CompletionData data = col.Add (obj);
-//					if (data != null && expressionResult.ExpressionContext == ExpressionContext.Attribute && data.CompletionText != null && data.CompletionText.EndsWith ("Attribute")) {
-//						string newText = data.CompletionText.Substring (0, data.CompletionText.Length - "Attribute".Length);
-//						data.SetText (newText);
-//					}
-//				}
-//			}
-			
-			return result.Result;
-		}
-
-		void AddExtensionMethods (CompletionDataWrapper result, Conversions conv, List<IType> baseTypes, string namespaceName)
-		{
-			foreach (var typeDefinition in ctx.GetTypes (namespaceName, StringComparer.Ordinal).Where (t => t.IsStatic && t.HasExtensionMethods)) {
-				foreach (var m in typeDefinition.Methods.Where (m => m.IsExtensionMethod )) {
-					var pt = m.Parameters.First ().Type.Resolve (ctx);
-					string reflectionName = pt is ParameterizedType ? ((ParameterizedType)pt).GetDefinition ().ReflectionName : pt.ReflectionName;
-					if (baseTypes.Any (bt => (bt is ParameterizedType ? ((ParameterizedType)bt).GetDefinition ().ReflectionName : bt.ReflectionName) == reflectionName)) {
-						result.AddMember (m);
-					}
-				}
-			}
-		}
-		IEnumerable<ICompletionData> CreateCaseCompletionData (TextLocation location)
-		{
-			var unit = ParseStub ("a: break;");
-			if (unit == null)
-				return null;
-			var s = unit.GetNodeAt<SwitchStatement> (location);
-			if (s == null)
-				return null;
-			
-			var offset = document.GetOffset (s.Expression.StartLocation);
-			var expr = GetExpressionAt (offset);
-			if (expr == null)
-				return null;
-			
-			var resolveResult = ResolveExpression (expr.Item1, expr.Item2, expr.Item3);
-			if (resolveResult == null || resolveResult.Item1.Type.Kind != TypeKind.Enum) 
-				return null;
-			var wrapper = new CompletionDataWrapper (this);
-			AddEnumMembers (wrapper, resolveResult.Item1.Type, resolveResult.Item2);
-			AutoCompleteEmptyMatch = false;
-			return wrapper.Result;
-		}
-		
-		#region Parsing methods
-
-		
-		Tuple<CSharpParsedFile, AstNode, CompilationUnit> GetExpressionBeforeCursor ()
-		{
-			CompilationUnit baseUnit;
-			if (currentMember == null) {
-				baseUnit = ParseStub ("st {}", false);
-				var type = baseUnit.GetNodeAt<MemberType> (location);
-				if (type == null) {
-					baseUnit = ParseStub ("a;", false);
-					type = baseUnit.GetNodeAt<MemberType> (location);
-				}
-				if (type != null) {
-					// insert target type into compilation unit, to respect the 
-					var target = type.Target;
-					target.Remove ();
-					var node = Unit.GetNodeAt (location) ?? Unit;
-					node.AddChild (target, AstNode.Roles.Type);
-					return Tuple.Create (CSharpParsedFile, (AstNode)target, Unit);
-				}
-			}
-			
-			if (currentMember == null && currentType == null) {
-				return null;
-			}
-			baseUnit = ParseStub ("a()");
-			Print (baseUnit);
-			var memberLocation = currentMember != null ? currentMember.Region.Begin : currentType.Region.Begin;
-			var mref = baseUnit.GetNodeAt<MemberReferenceExpression> (location); 
-			if (mref == null){
-				var invoke = baseUnit.GetNodeAt<InvocationExpression> (location); 
-				if (invoke != null)
-					mref = invoke.Target as MemberReferenceExpression;
-			}
-			Expression expr = null;
-			if (mref != null) {
-				expr = mref.Target.Clone ();
-				mref.Parent.ReplaceWith (expr);
-			} else {
-				Expression tref = baseUnit.GetNodeAt<TypeReferenceExpression> (location); 
-				var memberType = tref != null ? ((TypeReferenceExpression)tref).Type as MemberType : null;
-				if (memberType == null) {
-					memberType =  baseUnit.GetNodeAt<MemberType> (location); 
-					if (memberType != null) {
-						tref = baseUnit.GetNodeAt<Expression> (location); 
-						if (tref == null)
-							return null;
-					}
-					if (tref is ObjectCreateExpression) {
-						expr = new TypeReferenceExpression (memberType.Target.Clone ());
-						expr.AddAnnotation (new ObjectCreateExpression ());
-					}
-				}
-					
-				if (memberType == null)
-					return null;
-				if (expr == null)
-					expr = new TypeReferenceExpression (memberType.Target.Clone ());
-				tref.ReplaceWith (expr);
-			}
-			
-			var member = Unit.GetNodeAt<AttributedNode> (memberLocation);
-			var member2 = baseUnit.GetNodeAt<AttributedNode> (memberLocation);
-			member2.Remove ();
-			member.ReplaceWith (member2);
-			var tsvisitor = new TypeSystemConvertVisitor (ProjectContent, this.CSharpParsedFile.FileName);
-			Unit.AcceptVisitor (tsvisitor, null);
-			return Tuple.Create (tsvisitor.ParsedFile, (AstNode)expr, Unit);
-		}
-		
-		Tuple<CSharpParsedFile, AstNode, CompilationUnit> GetExpressionAtCursor ()
-		{
-//			if (currentMember == null && currentType == null)
-//				return null;
-			
-			TextLocation memberLocation;
-			if (currentMember != null) {
-				memberLocation = currentMember.Region.Begin;
-			} else if (currentType != null) {
-				memberLocation = currentType.Region.Begin;
-			} else  {
-				memberLocation = location;
-			}
-				
-			var baseUnit = ParseStub ("");
-			var tmpUnit = baseUnit;
-			AstNode expr = baseUnit.GetNodeAt<IdentifierExpression> (location.Line, location.Column - 1); 
-			if (expr == null)
-				expr = baseUnit.GetNodeAt<Attribute> (location.Line, location.Column - 1);
-			if (expr == null) {
-				baseUnit = ParseStub ("()");
-				expr = baseUnit.GetNodeAt<IdentifierExpression> (location.Line, location.Column - 1); 
-			}
-			
-			// try initializer expression
-			if (expr == null) {
-				baseUnit = ParseStub ("a = b};", false);
-				expr = baseUnit.GetNodeAt<ArrayInitializerExpression> (location.Line, location.Column - 1); 
-			}
-			
-			// try statement
-			if (expr == null) {
-				expr = tmpUnit.GetNodeAt<Statement> (location.Line, location.Column - 1); 
-			}
-			
-			if (expr == null)
-				return null;
-			var member = Unit.GetNodeAt<AttributedNode> (memberLocation);
-			var member2 = baseUnit.GetNodeAt<AttributedNode> (memberLocation);
-			if (member != null && member2 != null) {
-				member2.Remove ();
-				
-				if (member is TypeDeclaration) {
-					member.AddChild (member2, TypeDeclaration.MemberRole);
-				} else {
-					member.ReplaceWith (member2);
-				}
-			} else {
-				var tsvisitor2 = new TypeSystemConvertVisitor (ProjectContent, CSharpParsedFile.FileName);
-				Unit.AcceptVisitor (tsvisitor2, null);
-				return Tuple.Create (tsvisitor2.ParsedFile, expr, baseUnit);
-			}
-			var tsvisitor = new TypeSystemConvertVisitor (ProjectContent, CSharpParsedFile.FileName);
-			Unit.AcceptVisitor (tsvisitor, null);
-			return Tuple.Create (tsvisitor.ParsedFile, expr, Unit);
-		}
-		
-		Tuple<CSharpParsedFile, AstNode, CompilationUnit> GetExpressionAt (int offset)
-		{
-			var parser = new CSharpParser ();
-			string text = this.document.GetText (0, this.offset); 
-			var sb = new StringBuilder (text);
-			sb.Append ("a;");
-			AppendMissingClosingBrackets (sb, text, false);
-			var stream = new System.IO.StringReader (sb.ToString ());
-			var completionUnit = parser.Parse (stream, 0);
-			stream.Close ();
-			var loc = document.GetLocation (offset);
-			var expr = completionUnit.GetNodeAt (loc, n => n is Expression || n is VariableDeclarationStatement);
-			if (expr == null)
-				return null;
-			var tsvisitor = new TypeSystemConvertVisitor (ProjectContent, CSharpParsedFile.FileName);
-			completionUnit.AcceptVisitor (tsvisitor, null);
-			
-			return Tuple.Create (tsvisitor.ParsedFile, expr, completionUnit);
-		}
-		
-		
-		#endregion
-		
-		#region Helper methods
-		string GetPreviousToken (ref int i, bool allowLineChange)
-		{
-			char c;
-			if (i <= 0)
-				return null;
-			
-			do {
-				c = document.GetCharAt (--i);
-			} while (i > 0 && char.IsWhiteSpace (c) && (allowLineChange ? true : c != '\n'));
-			
-			if (i == 0)
-				return null;
-			
-			if (!char.IsLetterOrDigit (c))
-				return new string (c, 1);
-			
-			int endOffset = i + 1;
-			
-			do {
-				c = document.GetCharAt (i - 1);
-				if (!(char.IsLetterOrDigit (c) || c == '_'))
-					break;
-				
-				i--;
-			} while (i > 0);
-			
-			return document.GetText (i, endOffset - i);
-		}
-		
-		bool GetParameterCompletionCommandOffset (out int cpos)
-		{
-			// Start calculating the parameter offset from the beginning of the
-			// current member, instead of the beginning of the file. 
-			cpos = offset - 1;
-			IMember mem = currentMember;
-			if (mem == null || (mem is IType))
-				return false;
-			int startPos = document.GetOffset (mem.Region.BeginLine, mem.Region.BeginColumn);
-			int parenDepth = 0;
-			int chevronDepth = 0;
-			while (cpos > startPos) {
-				char c = document.GetCharAt (cpos);
-				if (c == ')')
-					parenDepth++;
-				if (c == '>')
-					chevronDepth++;
-				if (parenDepth == 0 && c == '(' || chevronDepth == 0 && c == '<') {
-					int p = GetCurrentParameterIndex (cpos + 1, startPos);
-					if (p != -1) {
-						cpos++;
-						return true;
-					} else {
-						return false;
-					}
-				}
-				if (c == '(')
-					parenDepth--;
-				if (c == '<')
-					chevronDepth--;
-				cpos--;
-			}
-			return false;
-		}
-		
-		int GetCurrentParameterIndex (int offset, int memberStart)
-		{
-			int cursor = this.offset;
-			int i = offset;
-			
-			if (i > cursor)
-				return -1;
-			if (i == cursor) 
-				return 1; // parameters are 1 based
-			int index = memberStart + 1;
-			int parentheses = 0;
-			int bracket = 0;
-			bool insideQuote = false, insideString = false, insideSingleLineComment = false, insideMultiLineComment = false;
-			do {
-				char c = document.GetCharAt (i - 1);
-				switch (c) {
-				case '\\':
-					if (insideString || insideQuote)
-						i++;
-					break;
-				case '\'':
-					if (!insideString && !insideSingleLineComment && !insideMultiLineComment)
-						insideQuote = !insideQuote;
-					break;
-				case '"':
-					if (!insideQuote && !insideSingleLineComment && !insideMultiLineComment)
-						insideString = !insideString;
-					break;
-				case '/':
-					if (!insideQuote && !insideString && !insideMultiLineComment) {
-						if (document.GetCharAt (i) == '/')
-							insideSingleLineComment = true;
-						if (document.GetCharAt (i) == '*')
-							insideMultiLineComment = true;
-					}
-					break;
-				case '*':
-					if (insideMultiLineComment && document.GetCharAt (i) == '/')
-						insideMultiLineComment = false;
-					break;
-				case '\n':
-				case '\r':
-					insideSingleLineComment = false;
-					break;
-				case '{':
-					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment)
-						bracket++;
-					break;
-				case '}':
-					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment)
-						bracket--;
-					break;
-				case '(':
-					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment)
-						parentheses++;
-					break;
-				case ')':
-					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment)
-						parentheses--;
-					break;
-				case ',':
-					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment && parentheses == 1 && bracket == 0)
-						index++;
-					break;
-				}
-				i++;
-			} while (i <= cursor && parentheses >= 0);
-			
-			return parentheses != 1 || bracket > 0 ? -1 : index;
-		}
-		
-		CSharpResolver GetState ()
-		{
-			var state = new CSharpResolver (ctx, System.Threading.CancellationToken.None);
-			
-			state.CurrentMember = CSharpParsedFile.GetMember (location);
-			state.CurrentTypeDefinition = CSharpParsedFile.GetInnermostTypeDefinition (location);
-			state.CurrentUsingScope = CSharpParsedFile.GetUsingScope (location);
-			if (state.CurrentMember != null) {
-				var node = Unit.GetNodeAt (location);
-				if (node == null)
-					return state;
-				var navigator = new NodeListResolveVisitorNavigator (new[] { node });
-				var visitor = new ResolveVisitor (state, CSharpParsedFile, navigator);
-				Unit.AcceptVisitor (visitor, null);
-				try {
-					var newState = visitor.GetResolverStateBefore (node);
-					if (newState != null)
-						state = newState;
-				} catch (Exception) {
-				}
-			}
-			
-			return state;
-		}
-		#endregion
-		
-		#region Preprocessor
-		
-		IEnumerable<ICompletionData> GetDirectiveCompletionData ()
-		{
-			yield return factory.CreateLiteralCompletionData ("if");
-			yield return factory.CreateLiteralCompletionData ("else");
-			yield return factory.CreateLiteralCompletionData ("elif");
-			yield return factory.CreateLiteralCompletionData ("endif");
-			yield return factory.CreateLiteralCompletionData ("define");
-			yield return factory.CreateLiteralCompletionData ("undef");
-			yield return factory.CreateLiteralCompletionData ("warning");
-			yield return factory.CreateLiteralCompletionData ("error");
-			yield return factory.CreateLiteralCompletionData ("pragma");
-			yield return factory.CreateLiteralCompletionData ("line");
-			yield return factory.CreateLiteralCompletionData ("line hidden");
-			yield return factory.CreateLiteralCompletionData ("line default");
-			yield return factory.CreateLiteralCompletionData ("region");
-			yield return factory.CreateLiteralCompletionData ("endregion");
-		}
-		#endregion
-		
-		#region Xml Comments
-		static readonly List<string> commentTags = new List<string> (new string[] { "c", "code", "example", "exception", "include", "list", "listheader", "item", "term", "description", "para", "param", "paramref", "permission", "remarks", "returns", "see", "seealso", "summary", "value" });
-		
-		IEnumerable<ICompletionData> GetXmlDocumentationCompletionData ()
-		{
-			yield return factory.CreateLiteralCompletionData ("c", "Set text in a code-like font");
-			yield return factory.CreateLiteralCompletionData ("code", "Set one or more lines of source code or program output");
-			yield return factory.CreateLiteralCompletionData ("example", "Indicate an example");
-			yield return factory.CreateLiteralCompletionData ("exception", "Identifies the exceptions a method can throw", "exception cref=\"|\"></exception>");
-			yield return factory.CreateLiteralCompletionData ("include", "Includes comments from a external file", "include file=\"|\" path=\"\">");
-			yield return factory.CreateLiteralCompletionData ("list", "Create a list or table", "list type=\"|\">");
-			yield return factory.CreateLiteralCompletionData ("listheader", "Define the heading row");
-			yield return factory.CreateLiteralCompletionData ("item", "Defines list or table item");
-			
-			yield return factory.CreateLiteralCompletionData ("term", "A term to define");
-			yield return factory.CreateLiteralCompletionData ("description", "Describes a list item");
-			yield return factory.CreateLiteralCompletionData ("para", "Permit structure to be added to text");
-			
-			yield return factory.CreateLiteralCompletionData ("param", "Describe a parameter for a method or constructor", "param name=\"|\">");
-			yield return factory.CreateLiteralCompletionData ("paramref", "Identify that a word is a parameter name", "paramref name=\"|\"/>");
-			
-			yield return factory.CreateLiteralCompletionData ("permission", "Document the security accessibility of a member", "permission cref=\"|\"");
-			yield return factory.CreateLiteralCompletionData ("remarks", "Describe a type");
-			yield return factory.CreateLiteralCompletionData ("returns", "Describe the return value of a method");
-			yield return factory.CreateLiteralCompletionData ("see", "Specify a link", "see cref=\"|\"/>");
-			yield return factory.CreateLiteralCompletionData ("seealso", "Generate a See Also entry", "seealso cref=\"|\"/>");
-			yield return factory.CreateLiteralCompletionData ("summary", "Describe a member of a type");
-			yield return factory.CreateLiteralCompletionData ("typeparam", "Describe a type parameter for a generic type or method");
-			yield return factory.CreateLiteralCompletionData ("typeparamref", "Identify that a word is a type parameter name");
-			yield return factory.CreateLiteralCompletionData ("value", "Describe a property");
-		}
-		#endregion
-		
-		#region Keywords
-		static string[] expressionLevelKeywords = new string [] { "as", "is", "else", "out", "ref", "null", "delegate", "default"};
-		
-		static string[] primitiveTypesKeywords = new string [] { "void", "object", "bool", "byte", "sbyte", "char", "short", "int", "long", "ushort", "uint", "ulong", "float", "double", "decimal", "string"};
-		
-		static string[] statementStartKeywords = new string [] { "base", "new", "sizeof", "this", 
-			"true", "false", "typeof", "checked", "unchecked", "from", "break", "checked",
-			"unchecked", "const", "continue", "do", "finally", "fixed", "for", "foreach",
-			"goto", "if", "lock", "return", "stackalloc", "switch", "throw", "try", "unsafe", 
-			"using", "while", "yield", "dynamic", "var" };
-		
-		static string[] globalLevelKeywords = new string [] {
-			"namespace", "using", "extern", "public", "internal", 
-			"class", "interface", "struct", "enum", "delegate",
-			"abstract", "sealed", "static", "unsafe", "partial"
-		};
-		
-		static string[] typeLevelKeywords = new string [] {
-			"public", "internal", "protected", "private",
-			"class", "interface", "struct", "enum", "delegate",
-			"abstract", "sealed", "static", "unsafe", "partial",
-			"const", "event", "extern", "fixed","new", 
-			"operator", "explicit", "implicit", 
-			"override", "readonly", "virtual", "volatile"
-		};
-		static string[] linqKeywords = new string[] { "from", "where", "select", "group", "into", "orderby", "join", "let", "in", "on", "equals", "by", "ascending", "descending" };
-		#endregion
-	}
-}
-
+// 

+// CSharpCompletionEngine.cs

+//  

+// Author:

+//       Mike Krüger <mkrueger@xamarin.com>

+// 

+// Copyright (c) 2011 Xamarin Inc. (http://xamarin.com)

+// 

+// Permission is hereby granted, free of charge, to any person obtaining a copy

+// of this software and associated documentation files (the "Software"), to deal

+// in the Software without restriction, including without limitation the rights

+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

+// copies of the Software, and to permit persons to whom the Software is

+// furnished to do so, subject to the following conditions:

+// 

+// The above copyright notice and this permission notice shall be included in

+// all copies or substantial portions of the Software.

+// 

+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

+// THE SOFTWARE.

+

+using System;

+using System.Collections.Generic;

+using System.Linq;

+using System.Text;

+

+using ICSharpCode.NRefactory.Completion;

+using ICSharpCode.NRefactory.CSharp.Refactoring;

+using ICSharpCode.NRefactory.CSharp.Resolver;

+using ICSharpCode.NRefactory.Editor;

+using ICSharpCode.NRefactory.Semantics;

+using ICSharpCode.NRefactory.TypeSystem;

+

+namespace ICSharpCode.NRefactory.CSharp.Completion

+{

+	public class CSharpCompletionEngine : CSharpCompletionEngineBase

+	{

+		internal ICompletionDataFactory factory;

+		

+		#region Additional input properties

+		public CSharpFormattingOptions FormattingPolicy { get; set; }

+		public string EolMarker { get; set; }

+		public string IndentString { get; set; }

+		#endregion

+		

+		#region Result properties

+		public bool AutoCompleteEmptyMatch;

+		public bool AutoSelect;

+		public string DefaultCompletionString;

+		#endregion

+		

+		public CSharpCompletionEngine (IDocument document, ICompletionDataFactory factory)

+		{

+			this.document = document;

+			this.factory = factory;

+		}

+

+		public IEnumerable<ICompletionData> GetCompletionData (int offset, bool controlSpace)

+		{

+			this.AutoCompleteEmptyMatch = true;

+			this.AutoSelect = true;

+			this.DefaultCompletionString = null;

+			SetOffset (offset);

+			if (offset > 0) {

+				char lastChar = document.GetCharAt (offset - 1);

+				var result = MagicKeyCompletion (lastChar, controlSpace) ?? Enumerable.Empty<ICompletionData> ();

+				if (controlSpace && char.IsWhiteSpace (lastChar)) {

+					offset -= 2;

+					while (offset >= 0 && char.IsWhiteSpace (document.GetCharAt (offset)))

+						offset--;

+					if (offset > 0) {

+						var nonWsResult = MagicKeyCompletion (document.GetCharAt (offset), controlSpace);

+						if (nonWsResult != null)

+							result = result.Concat (nonWsResult);

+					}

+				}

+				

+				return result;

+			}

+			return Enumerable.Empty<ICompletionData> ();

+		}

+		

+		IEnumerable<ICompletionData> MagicKeyCompletion (char completionChar, bool controlSpace)

+		{

+			switch (completionChar) {

+			// Magic key completion

+			case ':':

+			case '.':

+				if (IsInsideComment () || IsInsideString ())

+					return Enumerable.Empty<ICompletionData> ();

+				var expr = GetExpressionBeforeCursor ();

+				if (expr == null)

+					return null;

+				// do not complete <number>. (but <number>.<number>.)

+				if (expr.Item2 is PrimitiveExpression) {

+					var pexpr = (PrimitiveExpression)expr.Item2;

+					if (!(pexpr.Value is string || pexpr.Value is char) && !pexpr.LiteralValue.Contains ('.'))

+						return null;

+				}

+				

+				

+				var resolveResult = ResolveExpression (expr.Item1, expr.Item2, expr.Item3);

+				

+				if (resolveResult == null)

+					return null;

+				if (expr.Item2 is AstType)

+					return CreateTypeAndNamespaceCompletionData (location, resolveResult.Item1, expr.Item2, resolveResult.Item2);

+				

+				return CreateCompletionData (location, resolveResult.Item1, expr.Item2, resolveResult.Item2);

+			case '#':

+				if (IsInsideComment () || IsInsideString ())

+					return null;

+				return GetDirectiveCompletionData ();

+			

+// XML doc completion

+			case '<':

+				if (IsInsideDocComment ())

+					return GetXmlDocumentationCompletionData ();

+				if (controlSpace)

+					return DefaultControlSpaceItems ();

+				return null;

+			case '>':

+				if (!IsInsideDocComment ())

+					return null;

+				string lineText = document.GetText (document.GetLineByNumber (location.Line));

+				int startIndex = Math.Min (location.Column - 1, lineText.Length - 1);

+				

+				while (startIndex >= 0 && lineText [startIndex] != '<') {

+					--startIndex;

+					if (lineText [startIndex] == '/') { // already closed.

+						startIndex = -1;

+						break;

+					}

+				}

+				

+				if (startIndex >= 0) {

+					int endIndex = startIndex;

+					while (endIndex <= location.Column && endIndex < lineText.Length && !Char.IsWhiteSpace (lineText [endIndex])) {

+						endIndex++;

+					}

+					string tag = endIndex - startIndex - 1 > 0 ? lineText.Substring (startIndex + 1, endIndex - startIndex - 2) : null;

+					if (!string.IsNullOrEmpty (tag) && commentTags.IndexOf (tag) >= 0)

+						document.Insert (offset, "</" + tag + ">");

+				}

+				return null;

+			

+			// Parameter completion

+			case '(':

+				if (IsInsideComment () || IsInsideString ())

+					return null;

+				var invoke = GetInvocationBeforeCursor (true);

+				if (invoke == null)

+					return null;

+				if (invoke.Item2 is TypeOfExpression)

+					return CreateTypeList ();

+				var invocationResult = ResolveExpression (invoke.Item1, invoke.Item2, invoke.Item3);

+				if (invocationResult == null)

+					return null;

+				var methodGroup = invocationResult.Item1 as MethodGroupResolveResult;

+				if (methodGroup != null)

+					return CreateParameterCompletion (methodGroup, invocationResult.Item2, invoke.Item2, 0, controlSpace);

+				return null;

+			case ',':

+				int cpos2;

+				if (!GetParameterCompletionCommandOffset (out cpos2)) 

+					return null;

+			//	completionContext = CompletionWidget.CreateCodeCompletionContext (cpos2);

+			//	int currentParameter2 = MethodParameterDataProvider.GetCurrentParameterIndex (CompletionWidget, completionContext) - 1;

+//				return CreateParameterCompletion (CreateResolver (), location, ExpressionContext.MethodBody, provider.Methods, currentParameter);	

+				break;

+				

+			// Completion on space:

+			case ' ':

+				if (IsInsideComment () || IsInsideString ())

+					return null;

+				

+				int tokenIndex = offset;

+				string token = GetPreviousToken (ref tokenIndex, false);

+				

+				// check propose name, for context <variable name> <ctrl+space> (but only in control space context)

+				IType isAsType = null;

+				var isAsExpression = GetExpressionAt (offset);

+				if (controlSpace && isAsExpression != null && isAsExpression.Item2 is VariableDeclarationStatement && token != "new") {

+					var parent = isAsExpression.Item2 as VariableDeclarationStatement;

+					int offset1 = document.GetOffset (parent.Type.StartLocation);

+					int offset2 = document.GetOffset (parent.Type.EndLocation);

+					

+					string name = document.GetText (offset1, offset2 - offset1);

+					var names = new List<string> ();

+					int lastNameStart = 0;

+					for (int i = 1; i < name.Length; i++) {

+						if (Char.IsUpper (name [i])) {

+							names.Add (name.Substring (lastNameStart, i - lastNameStart));

+							lastNameStart = i;

+						}

+					}

+					names.Add (name.Substring (lastNameStart, name.Length - lastNameStart));

+					var proposeNameList = new CompletionDataWrapper (this);

+					var possibleName = new StringBuilder ();

+					for (int i = 0; i < names.Count; i++) {

+						possibleName.Length = 0;

+						for (int j = i; j < names.Count; j++) {

+							if (string.IsNullOrEmpty (names [j]))

+								continue;

+							if (j == i) 

+								names [j] = Char.ToLower (names [j] [0]) + names [j].Substring (1);

+							possibleName.Append (names [j]);

+						}

+						if (possibleName.Length > 0)

+							proposeNameList.Result.Add (factory.CreateLiteralCompletionData (possibleName.ToString ()));

+					}

+					

+					AutoSelect = false;

+					AutoCompleteEmptyMatch = false;

+					return proposeNameList.Result;

+				}

+//				int tokenIndex = offset;

+//				string token = GetPreviousToken (ref tokenIndex, false);

+//				if (result.ExpressionContext == ExpressionContext.ObjectInitializer) {

+//					resolver = CreateResolver ();

+//					ExpressionContext exactContext = new NewCSharpExpressionFinder (dom).FindExactContextForObjectInitializer (document, resolver.Unit, Document.FileName, resolver.CallingType);

+//					IReturnType objectInitializer = ((ExpressionContext.TypeExpressionContext)exactContext).UnresolvedType;

+//					if (objectInitializer != null && objectInitializer.ArrayDimensions == 0 && objectInitializer.PointerNestingLevel == 0 && (token == "{" || token == ","))

+//						return CreateCtrlSpaceCompletionData (completionContext, result); 

+//				}

+				if (token == "=") {

+					int j = tokenIndex;

+					string prevToken = GetPreviousToken (ref j, false);

+					if (prevToken == "=" || prevToken == "+" || prevToken == "-") {

+						token = prevToken + token;

+						tokenIndex = j;

+					}

+				}

+				switch (token) {

+				case "(":

+				case ",":

+					int cpos;

+					if (!GetParameterCompletionCommandOffset (out cpos)) 

+						break;

+					int currentParameter = GetCurrentParameterIndex (cpos, 0) - 1;

+					if (currentParameter < 0)

+						return null;

+					invoke = GetInvocationBeforeCursor (token == "(");

+					if (invoke == null)

+						return null;

+					invocationResult = ResolveExpression (invoke.Item1, invoke.Item2, invoke.Item3);

+					if (invocationResult == null)

+						return null;

+					methodGroup = invocationResult.Item1 as MethodGroupResolveResult;

+					if (methodGroup != null)

+						return CreateParameterCompletion (methodGroup, invocationResult.Item2, invoke.Item2, currentParameter, controlSpace);

+					return null;

+				case "=":

+				case "==":

+					GetPreviousToken (ref tokenIndex, false);

+					

+					var expressionOrVariableDeclaration = GetExpressionAt (tokenIndex);

+					if (expressionOrVariableDeclaration == null)

+						return null;

+					

+					resolveResult = ResolveExpression (expressionOrVariableDeclaration.Item1, expressionOrVariableDeclaration.Item2, expressionOrVariableDeclaration.Item3);

+					if (resolveResult == null)

+						return null;

+					

+					if (resolveResult.Item1.Type.Kind == TypeKind.Enum) {

+						var wrapper = new CompletionDataWrapper (this);

+						AddContextCompletion (wrapper, resolveResult.Item2, expressionOrVariableDeclaration.Item2);

+						AddEnumMembers (wrapper, resolveResult.Item1.Type, resolveResult.Item2);

+						AutoCompleteEmptyMatch = false;

+						return wrapper.Result;

+					}

+//				

+//					if (resolvedType.FullName == DomReturnType.Bool.FullName) {

+//						CompletionDataList completionList = new ProjectDomCompletionDataList ();

+//						CompletionDataCollector cdc = new CompletionDataCollector (this, dom, completionList, Document.CompilationUnit, resolver.CallingType, location);

+//						completionList.AutoCompleteEmptyMatch = false;

+//						cdc.Add ("true", "md-keyword");

+//						cdc.Add ("false", "md-keyword");

+//						resolver.AddAccessibleCodeCompletionData (result.ExpressionContext, cdc);

+//						return completionList;

+//					}

+//					if (resolvedType.ClassType == ClassType.Delegate && token == "=") {

+//						CompletionDataList completionList = new ProjectDomCompletionDataList ();

+//						string parameterDefinition = AddDelegateHandlers (completionList, resolvedType);

+//						string varName = GetPreviousMemberReferenceExpression (tokenIndex);

+//						completionList.Add (new EventCreationCompletionData (document, varName, resolvedType, null, parameterDefinition, resolver.CallingMember, resolvedType));

+//						

+//						CompletionDataCollector cdc = new CompletionDataCollector (this, dom, completionList, Document.CompilationUnit, resolver.CallingType, location);

+//						resolver.AddAccessibleCodeCompletionData (result.ExpressionContext, cdc);

+//						foreach (var data in completionList) {

+//							if (data is MemberCompletionData) 

+//								((MemberCompletionData)data).IsDelegateExpected = true;

+//						}

+//						return completionList;

+//					}

+					return null;

+				case "+=":

+				case "-=":

+					GetPreviousToken (ref tokenIndex, false);

+					

+					expressionOrVariableDeclaration = GetExpressionAt (tokenIndex);

+					if (expressionOrVariableDeclaration == null)

+						return null;

+				

+					resolveResult = ResolveExpression (expressionOrVariableDeclaration.Item1, expressionOrVariableDeclaration.Item2, expressionOrVariableDeclaration.Item3);

+					if (resolveResult == null)

+						return null;

+					

+					

+					var mrr = resolveResult.Item1 as MemberResolveResult;

+					if (mrr != null) {

+						var evt = mrr.Member as IEvent;

+						if (evt == null)

+							return null;

+						var delegateType = evt.ReturnType.Resolve (ctx);

+						if (!delegateType.IsDelegate ())

+							return null;

+						

+						var wrapper = new CompletionDataWrapper (this);

+						if (currentType != null) {

+//							bool includeProtected = DomType.IncludeProtected (dom, typeFromDatabase, resolver.CallingType);

+							foreach (var method in currentType.GetMethods (ctx)) {

+								if (MatchDelegate (delegateType, method) /*&& method.IsAccessibleFrom (dom, resolver.CallingType, resolver.CallingMember, includeProtected) &&*/) {

+									wrapper.AddMember (method);

+//									data.SetText (data.CompletionText + ";");

+								}

+							}

+						}

+						if (token == "+=") {

+							string parameterDefinition = AddDelegateHandlers (wrapper, delegateType);

+							string varName = GetPreviousMemberReferenceExpression (tokenIndex);

+							wrapper.Result.Add (factory.CreateEventCreationCompletionData (varName, delegateType, evt, parameterDefinition, currentMember, currentType));

+						}

+					

+						return wrapper.Result;

+					}

+					return null;

+				case ":":

+					if (currentMember == null) {

+						var wrapper = new CompletionDataWrapper (this);

+						AddTypesAndNamespaces (wrapper, GetState (), null, t => currentType != null ? !currentType.Equals (t) : true);

+						return wrapper.Result;

+					}

+					return null;

+				}

+				

+				var keywordCompletion = HandleKeywordCompletion (tokenIndex, token);

+				if (keywordCompletion == null && controlSpace)

+					goto default;

+				return keywordCompletion;

+			// Automatic completion

+			default:

+				if (IsInsideComment () || IsInsideString ())

+					return null;

+				var identifierStart = GetExpressionAtCursor ();

+				if (IsInLinqContext (offset)) {

+					tokenIndex = offset;

+					token = GetPreviousToken (ref tokenIndex, false); // token last typed

+					if (linqKeywords.Contains (token)) {

+						if (token == "from") // after from no auto code completion.

+							return null;

+						return DefaultControlSpaceItems ();

+					}

+					var dataList = new CompletionDataWrapper (this);

+					AddKeywords (dataList, linqKeywords);

+					return dataList.Result;

+				}

+				

+				var contextList = new CompletionDataWrapper (this);

+				if (identifierStart == null) {

+					var unit = ParseStub ("get; }", false);

+					var node = unit.GetNodeAt (location, cn => !(cn is CSharpTokenNode));

+					if (node is Accessor)

+						node = node.Parent;

+					if (node is PropertyDeclaration) {

+						contextList.AddCustom ("get");

+						contextList.AddCustom ("set");

+						AddKeywords (contextList, accessorModifierKeywords);

+					} else if (node is CustomEventDeclaration) {

+						contextList.AddCustom ("add");

+						contextList.AddCustom ("remove");

+					} else {

+						AddContextCompletion (contextList, GetState (), null);

+					}

+					

+					return contextList.Result;

+				}

+				

+				if (!(char.IsLetter (completionChar) || completionChar == '_') && (identifierStart == null || !(identifierStart.Item2 is ArrayInitializerExpression)))

+					return controlSpace ? DefaultControlSpaceItems () : null;

+				char prevCh = offset > 2 ? document.GetCharAt (offset - 2) : '\0';

+				char nextCh = offset < document.TextLength ? document.GetCharAt (offset) : ' ';

+				const string allowedChars = ";,[(){}+-*/%^?:&|~!<>=";

+				if (!Char.IsWhiteSpace (nextCh) && allowedChars.IndexOf (nextCh) < 0)

+					return null;

+				if (!(Char.IsWhiteSpace (prevCh) || allowedChars.IndexOf (prevCh) >= 0))

+					return null;

+				// Do not pop up completion on identifier identifier (should be handled by keyword completion).

+				tokenIndex = offset - 1;

+				token = GetPreviousToken (ref tokenIndex, false);

+				if (string.IsNullOrEmpty (token) && !(IsInsideComment (tokenIndex) || IsInsideString (tokenIndex))) {

+					char last = token [token.Length - 1];

+					if (!char.IsLetterOrDigit (last) && last != '_')

+						return null;

+				}

+				CSharpResolver csResolver;

+				AstNode n = identifierStart.Item2;

+				if (n is ArrayInitializerExpression) {

+					var initalizerResult = ResolveExpression (identifierStart.Item1, n.Parent, identifierStart.Item3);

+					if (initalizerResult != null) {

+						foreach (var property in initalizerResult.Item1.Type.GetProperties (ctx)) {

+							if (!property.IsPublic)

+								continue;

+							contextList.AddMember (property);

+						}

+						foreach (var field in initalizerResult.Item1.Type.GetProperties (ctx)){

+							if (!field.IsPublic)

+								continue;

+							contextList.AddMember (field);

+						}

+						return contextList.Result;

+					}

+					return null;

+				}

+				

+				if (n != null/* && !(identifierStart.Item2 is TypeDeclaration)*/) {

+					csResolver = new CSharpResolver (ctx, System.Threading.CancellationToken.None);

+					var nodes = new List<AstNode> ();

+					nodes.Add (n);

+					if (n.Parent is ICSharpCode.NRefactory.CSharp.Attribute)

+						nodes.Add (n.Parent);

+					var navigator = new NodeListResolveVisitorNavigator (nodes);

+					var visitor = new ResolveVisitor (csResolver, identifierStart.Item1, navigator);

+					visitor.Scan (identifierStart.Item3);

+					try {

+						csResolver = visitor.GetResolverStateBefore (n);

+					} catch (Exception) {

+						csResolver = GetState ();

+					}

+					// add attribute properties.

+					if (n.Parent is ICSharpCode.NRefactory.CSharp.Attribute) {

+						var resolved = visitor.GetResolveResult (n.Parent);

+						if (resolved != null && resolved.Type != null) {

+							foreach (var property in resolved.Type.GetProperties (ctx).Where (p => p.Accessibility == Accessibility.Public)) {

+								contextList.AddMember (property);

+							}

+							foreach (var field in resolved.Type.GetFields (ctx).Where (p => p.Accessibility == Accessibility.Public)) {

+								contextList.AddMember (field);

+							}

+						}

+					}

+				} else {

+					csResolver = GetState ();

+				}

+				

+				// identifier has already started with the first letter

+				offset--;

+				

+				AddContextCompletion (contextList, csResolver, identifierStart.Item2);

+				return contextList.Result;

+//				if (stub.Parent is BlockStatement)

+				

+//				result = FindExpression (dom, completionContext, -1);

+//				if (result == null)

+//					return null;

+//				 else if (result.ExpressionContext != ExpressionContext.IdentifierExpected) {

+//					triggerWordLength = 1;

+//					bool autoSelect = true;

+//					IType returnType = null;

+//					if ((prevCh == ',' || prevCh == '(') && GetParameterCompletionCommandOffset (out cpos)) {

+//						ctx = CompletionWidget.CreateCodeCompletionContext (cpos);

+//						NRefactoryParameterDataProvider dataProvider = ParameterCompletionCommand (ctx) as NRefactoryParameterDataProvider;

+//						if (dataProvider != null) {

+//							int i = dataProvider.GetCurrentParameterIndex (CompletionWidget, ctx) - 1;

+//							foreach (var method in dataProvider.Methods) {

+//								if (i < method.Parameters.Count) {

+//									returnType = dom.GetType (method.Parameters [i].ReturnType);

+//									autoSelect = returnType == null || returnType.ClassType != ClassType.Delegate;

+//									break;

+//								}

+//							}

+//						}

+//					}

+//					// Bug 677531 - Auto-complete doesn't always highlight generic parameter in method signature

+//					//if (result.ExpressionContext == ExpressionContext.TypeName)

+//					//	autoSelect = false;

+//					CompletionDataList dataList = CreateCtrlSpaceCompletionData (completionContext, result);

+//					AddEnumMembers (dataList, returnType);

+//					dataList.AutoSelect = autoSelect;

+//					return dataList;

+//				} else {

+//					result = FindExpression (dom, completionContext, 0);

+//					tokenIndex = offset;

+//					

+//					// check foreach case, unfortunately the expression finder is too dumb to handle full type names

+//					// should be overworked if the expression finder is replaced with a mcs ast based analyzer.

+//					var possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // starting letter

+//					possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // varname

+//				

+//					// read return types to '(' token

+//					possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // varType

+//					if (possibleForeachToken == ">") {

+//						while (possibleForeachToken != null && possibleForeachToken != "(") {

+//							possibleForeachToken = GetPreviousToken (ref tokenIndex, false);

+//						}

+//					} else {

+//						possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // (

+//						if (possibleForeachToken == ".")

+//							while (possibleForeachToken != null && possibleForeachToken != "(")

+//								possibleForeachToken = GetPreviousToken (ref tokenIndex, false);

+//					}

+//					possibleForeachToken = GetPreviousToken (ref tokenIndex, false); // foreach

+//				

+//					if (possibleForeachToken == "foreach") {

+//						result.ExpressionContext = ExpressionContext.ForeachInToken;

+//					} else {

+//						return null;

+//						//								result.ExpressionContext = ExpressionContext.IdentifierExpected;

+//					}

+//					result.Expression = "";

+//					result.Region = DomRegion.Empty;

+//				

+//					return CreateCtrlSpaceCompletionData (completionContext, result);

+//				}

+//				break;

+			}

+			return null;

+		}

+

+		bool IsInLinqContext (int offset)

+		{

+			string token;

+			while (null != (token = GetPreviousToken (ref offset, true))) {

+				if (token == "from")

+					return true;

+				if (token == ";")

+					return false;

+			}

+			return false;

+		}

+		

+		IEnumerable<ICompletionData> DefaultControlSpaceItems ()

+		{

+			var wrapper = new CompletionDataWrapper (this);

+			while (offset > 0 && char.IsWhiteSpace (document.GetCharAt (offset))) {

+				offset--;

+			}

+			location = document.GetLocation (offset);

+			var xp = GetExpressionAtCursor ();

+			

+			AstNode node;

+			Tuple<ResolveResult, CSharpResolver> rr;

+			if (xp != null) {

+				node = xp.Item2;

+				rr = ResolveExpression (xp.Item1, node, xp.Item3);

+			} else {

+				node = Unit.GetNodeAt (location);

+				rr = ResolveExpression (CSharpParsedFile, node, Unit);

+			}

+				

+			AddContextCompletion (wrapper, rr != null ? rr.Item2 : GetState (), node);

+			

+			return wrapper.Result;

+		}

+		

+		void AddContextCompletion (CompletionDataWrapper wrapper, CSharpResolver state, AstNode node)

+		{

+			if (state == null) 

+				return;

+			foreach (var variable in state.LocalVariables) {

+				wrapper.AddVariable (variable);

+			}

+			if (state.CurrentMember is IParameterizedMember) {

+				var param = (IParameterizedMember)state.CurrentMember;

+				foreach (var p in param.Parameters) {

+					wrapper.AddVariable (p);

+				}

+			}

+			

+			if (state.CurrentMember is IMethod) {

+				var method = (IMethod)state.CurrentMember;

+				foreach (var p in method.TypeParameters) {

+					wrapper.AddTypeParameter (p);

+				}

+			}

+			Predicate<ITypeDefinition> typePred = null;

+			if (node is Attribute) {

+				var attribute = ctx.GetTypeDefinition ("System", "Attribute", 0, StringComparer.Ordinal);

+				typePred = t => t.GetAllBaseTypeDefinitions (ctx).Any (bt => bt.Equals (attribute));

+			}

+			AddTypesAndNamespaces (wrapper, state, node, typePred);

+			

+			wrapper.Result.Add (factory.CreateLiteralCompletionData ("global"));

+			if (state.CurrentMember != null) {

+				AddKeywords (wrapper, statementStartKeywords);

+				AddKeywords (wrapper, expressionLevelKeywords);

+			} else if (state.CurrentTypeDefinition != null) {

+				AddKeywords (wrapper, typeLevelKeywords);

+			} else {

+				AddKeywords (wrapper, globalLevelKeywords);

+			}

+			

+			if (IsInSwitchContext(node)) {

+				wrapper.AddCustom ("case"); 

+				wrapper.AddCustom ("default"); 

+			}

+			

+			AddKeywords (wrapper, primitiveTypesKeywords);

+			wrapper.Result.AddRange (factory.CreateCodeTemplateCompletionData ());

+		}

+		

+		static bool IsInSwitchContext(AstNode node)

+		{

+			var n = node;

+			while (n != null && !(n is MemberDeclaration)) {

+				if (n is SwitchStatement)

+					return true;

+				if (n is BlockStatement)

+					return false;

+				n = n.Parent;

+			}

+			return false;

+		}

+		

+		void AddTypesAndNamespaces (CompletionDataWrapper wrapper, CSharpResolver state, AstNode node, Predicate<ITypeDefinition> typePred = null, Predicate<IMember> memberPred = null)

+		{

+			var currentType = state.CurrentTypeDefinition ?? this.currentType;

+			var currentMember = state.CurrentMember ?? this.currentMember;

+			if (currentType != null) {

+				for (var ct = currentType; ct != null; ct = ct.DeclaringTypeDefinition) {

+					foreach (var nestedType in ct.NestedTypes) {

+						if (typePred == null || typePred (nestedType)) {

+							string name = nestedType.Name;

+							if (node is Attribute && name.EndsWith ("Attribute") && name.Length > "Attribute".Length)

+								name = name.Substring (0, name.Length - "Attribute".Length);

+							wrapper.AddType (nestedType, name);

+						}

+					}

+				}

+				if (currentMember !=  null) {

+					foreach (var member in currentType.Resolve (ctx).GetMembers (ctx)) {

+						if (memberPred == null || memberPred (member))

+							wrapper.AddMember (member);

+					}

+				}

+				foreach (var p in currentType.TypeParameters) {

+					wrapper.AddTypeParameter (p);

+				}

+			}

+			

+			for (var n = state.CurrentUsingScope; n != null; n = n.Parent) {

+				foreach (var pair in n.UsingAliases) {

+					wrapper.AddNamespace ("", pair.Key);

+				}

+				

+				foreach (var u in n.Usings) {

+					var ns = u.ResolveNamespace (ctx);

+					if (ns == null)

+						continue;

+					foreach (var type in ctx.GetTypes (ns.NamespaceName, StringComparer.Ordinal)) {

+						if (typePred == null || typePred (type)) {

+							string name = type.Name;

+							if (node is Attribute && name.EndsWith ("Attribute") && name.Length > "Attribute".Length)

+								name = name.Substring (0, name.Length - "Attribute".Length);

+							wrapper.AddType (type, name);

+						}

+					}

+				}

+				

+				foreach (var type in ctx.GetTypes (n.NamespaceName, StringComparer.Ordinal)) {

+					if (typePred == null || typePred (type)) {

+						wrapper.AddType (type, type.Name);

+					}

+				}

+				

+				foreach (var curNs in ctx.GetNamespaces ().Where (sn => sn.StartsWith (n.NamespaceName) && sn != n.NamespaceName)) {

+					wrapper.AddNamespace (n.NamespaceName, curNs);

+				}

+			}

+		}

+		

+		IEnumerable<ICompletionData> HandleKeywordCompletion (int wordStart, string word)

+		{

+			if (IsInsideComment () || IsInsideString ())

+				return null;

+			switch (word) {

+			case "using":

+			case "namespace":

+				if (currentType != null)

+					return null;

+				var wrapper = new CompletionDataWrapper (this);

+				AddTypesAndNamespaces (wrapper, GetState (), null, t => false);

+				return wrapper.Result;

+				case "case":

+					return CreateCaseCompletionData (location);

+//				case ",":

+//				case ":":

+//					if (result.ExpressionContext == ExpressionContext.InheritableType) {

+//						IType cls = NRefactoryResolver.GetTypeAtCursor (Document.CompilationUnit, Document.FileName, new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));

+//						CompletionDataList completionList = new ProjectDomCompletionDataList ();

+//						List<string > namespaceList = GetUsedNamespaces ();

+//						var col = new CSharpTextEditorCompletion.CompletionDataCollector (this, dom, completionList, Document.CompilationUnit, null, location);

+//						bool isInterface = false;

+//						HashSet<string > baseTypeNames = new HashSet<string> ();

+//						if (cls != null) {

+//							baseTypeNames.Add (cls.Name);

+//							if (cls.ClassType == ClassType.Struct)

+//								isInterface = true;

+//						}

+//						int tokenIndex = offset;

+//	

+//						// Search base types " : [Type1, ... ,TypeN,] <Caret>"

+//						string token = null;

+//						do {

+//							token = GetPreviousToken (ref tokenIndex, false);

+//							if (string.IsNullOrEmpty (token))

+//								break;

+//							token = token.Trim ();

+//							if (Char.IsLetterOrDigit (token [0]) || token [0] == '_') {

+//								IType baseType = dom.SearchType (Document.CompilationUnit, cls, result.Region.Start, token);

+//								if (baseType != null) {

+//									if (baseType.ClassType != ClassType.Interface)

+//										isInterface = true;

+//									baseTypeNames.Add (baseType.Name);

+//								}

+//							}

+//						} while (token != ":");

+//						foreach (object o in dom.GetNamespaceContents (namespaceList, true, true)) {

+//							IType type = o as IType;

+//							if (type != null && (type.IsStatic || type.IsSealed || baseTypeNames.Contains (type.Name) || isInterface && type.ClassType != ClassType.Interface)) {

+//								continue;

+//							}

+//							if (o is Namespace && !namespaceList.Any (ns => ns.StartsWith (((Namespace)o).FullName)))

+//								continue;

+//							col.Add (o);

+//						}

+//						// Add inner classes

+//						Stack<IType > innerStack = new Stack<IType> ();

+//						innerStack.Push (cls);

+//						while (innerStack.Count > 0) {

+//							IType curType = innerStack.Pop ();

+//							if (curType == null)

+//								continue;

+//							foreach (IType innerType in curType.InnerTypes) {

+//								if (innerType != cls)

+//									// don't add the calling class as possible base type

+//									col.Add (innerType);

+//							}

+//							if (curType.DeclaringType != null)

+//								innerStack.Push (curType.DeclaringType);

+//						}

+//						return completionList;

+//					}

+//					break;

+			case "is":

+			case "as":

+				if (currentType == null)

+					return null;

+				IType isAsType = null;

+				var isAsExpression = GetExpressionAt (wordStart);

+				if (isAsExpression != null) {

+					var parent = isAsExpression.Item2.Parent;

+					if (parent is VariableInitializer)

+						parent = parent.Parent;

+					if (parent is VariableDeclarationStatement) {

+						var resolved = ResolveExpression (isAsExpression.Item1, parent, isAsExpression.Item3);

+						if (resolved != null)

+							isAsType = resolved.Item1.Type;

+					}

+				}

+				

+				var isAsWrapper = new CompletionDataWrapper (this);

+				AddTypesAndNamespaces (isAsWrapper, GetState (), null, t => isAsType == null || t.IsDerivedFrom (isAsType.GetDefinition (), ctx));

+				return isAsWrapper.Result;

+//					{

+//						CompletionDataList completionList = new ProjectDomCompletionDataList ();

+//						ExpressionResult expressionResult = FindExpression (dom, completionContext, wordStart - document.Caret.Offset);

+//						NRefactoryResolver resolver = CreateResolver ();

+//						ResolveResult resolveResult = resolver.Resolve (expressionResult, new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));

+//						if (resolveResult != null && resolveResult.ResolvedType != null) {

+//							CompletionDataCollector col = new CompletionDataCollector (this, dom, completionList, Document.CompilationUnit, resolver.CallingType, location);

+//							IType foundType = null;

+//							if (word == "as") {

+//								ExpressionContext exactContext = new NewCSharpExpressionFinder (dom).FindExactContextForAsCompletion (document, Document.CompilationUnit, Document.FileName, resolver.CallingType);

+//								if (exactContext is ExpressionContext.TypeExpressionContext) {

+//									foundType = resolver.SearchType (((ExpressionContext.TypeExpressionContext)exactContext).Type);

+//									AddAsCompletionData (col, foundType);

+//								}

+//							}

+//						

+//							if (foundType == null)

+//								foundType = resolver.SearchType (resolveResult.ResolvedType);

+//						

+//							if (foundType != null) {

+//								if (foundType.ClassType == ClassType.Interface)

+//									foundType = resolver.SearchType (DomReturnType.Object);

+//							

+//								foreach (IType type in dom.GetSubclasses (foundType)) {

+//									if (type.IsSpecialName || type.Name.StartsWith ("<"))

+//										continue;

+//									AddAsCompletionData (col, type);

+//								}

+//							}

+//							List<string > namespaceList = GetUsedNamespaces ();

+//							foreach (object o in dom.GetNamespaceContents (namespaceList, true, true)) {

+//								if (o is IType) {

+//									IType type = (IType)o;

+//									if (type.ClassType != ClassType.Interface || type.IsSpecialName || type.Name.StartsWith ("<"))

+//										continue;

+//	//								if (foundType != null && !dom.GetInheritanceTree (foundType).Any (x => x.FullName == type.FullName))

+//	//									continue;

+//									AddAsCompletionData (col, type);

+//									continue;

+//								}

+//								if (o is Namespace)

+//									continue;

+//								col.Add (o);

+//							}

+//							return completionList;

+//						}

+//						result.ExpressionContext = ExpressionContext.TypeName;

+//						return CreateCtrlSpaceCompletionData (completionContext, result);

+//					}

+			case "override":

+				// Look for modifiers, in order to find the beginning of the declaration

+				int firstMod = wordStart;

+				int i = wordStart;

+				for (int n = 0; n < 3; n++) {

+					string mod = GetPreviousToken (ref i, true);

+					if (mod == "public" || mod == "protected" || mod == "private" || mod == "internal" || mod == "sealed") {

+						firstMod = i;

+					} else if (mod == "static") {

+						// static methods are not overridable

+						return null;

+					} else

+						break;

+				}

+				if (!IsLineEmptyUpToEol ())

+					return null;

+				var overrideCls = CSharpParsedFile.GetInnermostTypeDefinition (location);

+								

+				if (overrideCls != null && (overrideCls.Kind == TypeKind.Class || overrideCls.Kind == TypeKind.Struct)) {

+					string modifiers = document.GetText (firstMod, wordStart - firstMod);

+					return GetOverrideCompletionData (overrideCls, modifiers);

+				}

+				return null;

+//				case "partial":

+//					// Look for modifiers, in order to find the beginning of the declaration

+//					firstMod = wordStart;

+//					i = wordStart;

+//					for (int n = 0; n < 3; n++) {

+//						string mod = GetPreviousToken (ref i, true);

+//						if (mod == "public" || mod == "protected" || mod == "private" || mod == "internal" || mod == "sealed") {

+//							firstMod = i;

+//						} else if (mod == "static") {

+//							// static methods are not overridable

+//							return null;

+//						} else

+//							break;

+//					}

+//					if (!IsLineEmptyUpToEol ())

+//						return null;

+//					

+//					overrideCls = NRefactoryResolver.GetTypeAtCursor (Document.CompilationUnit, Document.FileName, new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));

+//					if (overrideCls != null && (overrideCls.ClassType == ClassType.Class || overrideCls.ClassType == ClassType.Struct)) {

+//						string modifiers = document.GetTextBetween (firstMod, wordStart);

+//						return GetPartialCompletionData (completionContext, overrideCls, modifiers);

+//					}

+//					return null;

+//					

+			case "public":

+			case "protected":

+			case "private":

+			case "internal":

+			case "sealed":

+			case "static":

+				wrapper = new CompletionDataWrapper (this);

+				var state = GetState ();

+				AddTypesAndNamespaces (wrapper, state, null, null, m => false);

+				AddKeywords (wrapper, typeLevelKeywords);

+				AddKeywords (wrapper, primitiveTypesKeywords);

+				return wrapper.Result;

+			case "new":

+				int j = offset - 4;

+//				string token = GetPreviousToken (ref j, true);

+				

+				IType hintType = null;

+				var expressionOrVariableDeclaration = GetExpressionAt (j);

+				if (expressionOrVariableDeclaration != null && expressionOrVariableDeclaration.Item2 is VariableDeclarationStatement) {

+					var varDecl = (VariableDeclarationStatement)expressionOrVariableDeclaration.Item2;

+					var resolved = ResolveExpression (expressionOrVariableDeclaration.Item1, varDecl.Type, expressionOrVariableDeclaration.Item3);

+					if (resolved != null) {

+						hintType = resolved.Item1.Type;

+					}

+				}

+				return CreateTypeCompletionData (hintType);

+//					IType callingType = NRefactoryResolver.GetTypeAtCursor (Document.CompilationUnit, Document.FileName, new TextLocation (document.Caret.Line, document.Caret.Column));

+//					ExpressionContext newExactContext = new NewCSharpExpressionFinder (dom).FindExactContextForNewCompletion (document, Document.CompilationUnit, Document.FileName, callingType);

+//					if (newExactContext is ExpressionContext.TypeExpressionContext)

+//						return CreateTypeCompletionData (location, callingType, newExactContext, ((ExpressionContext.TypeExpressionContext)newExactContext).Type, ((ExpressionContext.TypeExpressionContext)newExactContext).UnresolvedType);

+//					if (newExactContext == null) {

+//						int j = offset - 4;

+//						

+//						string yieldToken = GetPreviousToken (ref j, true);

+//						if (token == "return") {

+//							NRefactoryResolver resolver = CreateResolver ();

+//							resolver.SetupResolver (new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));

+//							IReturnType returnType = resolver.CallingMember.ReturnType;

+//							if (yieldToken == "yield" && returnType.GenericArguments.Count > 0)

+//								returnType = returnType.GenericArguments [0];

+//							if (resolver.CallingMember != null)

+//								return CreateTypeCompletionData (location, callingType, newExactContext, null, returnType);

+//						}

+//					}

+//					return CreateCtrlSpaceCompletionData (completionContext, null);

+//				case "if":

+//				case "elif":

+//					if (stateTracker.Engine.IsInsidePreprocessorDirective) 

+//						return GetDefineCompletionData ();

+//					return null;

+			case "yield":

+				var yieldDataList = new CompletionDataWrapper (this);

+				DefaultCompletionString = "return";

+				yieldDataList.AddCustom ("break");

+				yieldDataList.AddCustom ("return");

+				return yieldDataList.Result;

+			case "in":

+				var inList = new CompletionDataWrapper (this);

+				var node = Unit.GetNodeAt (location);

+				var rr = ResolveExpression (CSharpParsedFile, node, Unit);

+				AddContextCompletion (inList, rr != null ? rr.Item2 : GetState (), node);

+				return inList.Result;

+//				case "where":

+//					CompletionDataList whereDataList = new CompletionDataList ();

+//					NRefactoryResolver constraintResolver = CreateResolver ();

+//					constraintResolver.SetupResolver (new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));

+//					if (constraintResolver.CallingMember is IMethod) {

+//						foreach (ITypeParameter tp in ((IMethod)constraintResolver.CallingMember).TypeParameters) {

+//							whereDataList.Add (tp.Name, "md-keyword");

+//						}

+//					} else {

+//						if (constraintResolver.CallingType != null) {

+//							foreach (ITypeParameter tp in constraintResolver.CallingType.TypeParameters) {

+//								whereDataList.Add (tp.Name, "md-keyword");

+//							}

+//						}

+//					}

+//	

+//					return whereDataList;

+			}

+//				if (IsInLinqContext (result)) {

+//					if (linqKeywords.Contains (word)) {

+//						if (word == "from") // after from no auto code completion.

+//							return null;

+//						result.Expression = "";

+//						return CreateCtrlSpaceCompletionData (completionContext, result);

+//					}

+//					CompletionDataList dataList = new ProjectDomCompletionDataList ();

+//					CompletionDataCollector col = new CompletionDataCollector (this, dom, dataList, Document.CompilationUnit, null, new TextLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));

+//					foreach (string kw in linqKeywords) {

+//						col.Add (kw, "md-keyword");

+//					}

+//					return dataList;

+//				}

+			return null;

+		}

+		

+		bool IsLineEmptyUpToEol ()

+		{

+			var line = document.GetLineByNumber (location.Line);

+			for (int j = offset; j < line.EndOffset; j++) {

+				char ch = document.GetCharAt (j);

+				if (!char.IsWhiteSpace (ch))

+					return false;

+			}

+			return true;

+		}

+		string GetLineIndent (int lineNr)

+		{

+			var line = document.GetLineByNumber (lineNr);

+			for (int j = offset; j < line.EndOffset; j++) {

+				char ch = document.GetCharAt (j);

+				if (!char.IsWhiteSpace (ch))

+					return document.GetText (line.Offset, j - line.Offset - 1);

+			}

+			return "";

+		}

+		

+		IEnumerable<ICompletionData> CreateTypeCompletionData (IType hintType)

+		{

+			var wrapper = new CompletionDataWrapper (this);

+			var state = GetState ();

+			Predicate<ITypeDefinition> pred = null;

+			if (hintType != null && !hintType.Equals (SharedTypes.UnknownType)) {

+				var lookup = new MemberLookup (ctx, currentType, ProjectContent);

+				pred = t => {

+					// check if type is in inheritance tree.

+					if (hintType.GetDefinition () != null && !t.IsDerivedFrom (hintType.GetDefinition (), ctx))

+						return false;

+					// check for valid constructors

+					if (t.Methods.Count (m => m.IsConstructor) == 0)

+						return true;

+					bool isProtectedAllowed = currentType != null ? currentType.IsDerivedFrom (t, ctx) : false;

+					return t.Methods.Any (m => m.IsConstructor && lookup.IsAccessible (m, isProtectedAllowed));

+				};

+				DefaultCompletionString = GetShortType (hintType, GetState ());

+				wrapper.AddType (hintType, DefaultCompletionString);

+			}

+			AddTypesAndNamespaces (wrapper, state, null, pred, m => false);

+			AddKeywords (wrapper, primitiveTypesKeywords.Where (k => k != "void"));

+			AutoCompleteEmptyMatch = true;

+			return wrapper.Result;

+		}

+		

+		IEnumerable<ICompletionData> GetOverrideCompletionData (ITypeDefinition type, string modifiers)

+		{

+			var wrapper = new CompletionDataWrapper (this);

+			var alreadyInserted = new Dictionary<string, bool> ();

+			bool addedVirtuals = false;

+			

+			int declarationBegin = offset;

+			int j = declarationBegin;

+			for (int i = 0; i < 3; i++) {

+				switch (GetPreviousToken (ref j, true)) {

+				case "public":

+				case "protected":

+				case "private":

+				case "internal":

+				case "sealed":

+				case "override":

+					declarationBegin = j;

+					break;

+				case "static":

+					return null; // don't add override completion for static members

+				}

+			}

+			foreach (var baseType in type.GetAllBaseTypeDefinitions (ctx)) {

+				AddVirtuals (alreadyInserted, wrapper, type, modifiers, baseType, declarationBegin);

+				addedVirtuals = true;

+			}

+			if (!addedVirtuals)

+				AddVirtuals (alreadyInserted, wrapper, type, modifiers, ctx.GetTypeDefinition (typeof(object)), declarationBegin);

+			return wrapper.Result;

+		}

+		

+		static string GetNameWithParamCount (IMember member)

+		{

+			var e = member as IMethod;

+			if (e == null || e.TypeParameters.Count == 0)

+				return member.Name;

+			return e.Name + "`" + e.TypeParameters.Count;

+		}

+		

+		void AddVirtuals (Dictionary<string, bool> alreadyInserted, CompletionDataWrapper col, ITypeDefinition type, string modifiers, ITypeDefinition curType, int declarationBegin)

+		{

+			if (curType == null)

+				return;

+			foreach (var m in curType.Methods.Where (m => !m.IsConstructor && !m.IsDestructor).Cast<IMember> ().Concat (curType.Properties.Cast<IMember> ())) {

+				if (m.IsSynthetic || curType.Kind != TypeKind.Interface && !(m.IsVirtual || m.IsOverride || m.IsAbstract))

+					continue;

+				// filter out the "Finalize" methods, because finalizers should be done with destructors.

+				if (m is IMethod && m.Name == "Finalize")

+					continue;

+				

+				var data = factory.CreateNewOverrideCompletionData (declarationBegin, type, m);

+				string text = GetNameWithParamCount (m);

+				

+				// check if the member is already implemented

+				bool foundMember = type.Members.Any (cm => GetNameWithParamCount (cm) == text);

+				if (!foundMember && !alreadyInserted.ContainsKey (text)) {

+					alreadyInserted [text] = true;

+					data.CompletionCategory = col.GetCompletionCategory (curType);

+					col.Add (data);

+				}

+			}

+		}

+		

+		static void AddKeywords (CompletionDataWrapper wrapper, IEnumerable<string> keywords)

+		{

+			foreach (string keyword in keywords) {

+				wrapper.AddCustom (keyword);

+			}

+		}

+		

+		public string GetPreviousMemberReferenceExpression (int tokenIndex)

+		{

+			string result = GetPreviousToken (ref tokenIndex, false);

+			result = GetPreviousToken (ref tokenIndex, false);

+			if (result != ".") {

+				result = null;

+			} else {

+				var names = new List<string> ();

+				while (result == ".") {

+					result = GetPreviousToken (ref tokenIndex, false);

+					if (result == "this") {

+						names.Add ("handle");

+					} else if (result != null) {

+						string trimmedName = result.Trim ();

+						if (trimmedName.Length == 0)

+							break;

+						names.Insert (0, trimmedName);

+					}

+					result = GetPreviousToken (ref tokenIndex, false);

+				}

+				result = String.Join ("", names.ToArray ());

+				foreach (char ch in result) {

+					if (!char.IsLetterOrDigit (ch) && ch != '_') {

+						result = "";

+						break;

+					}

+				}

+			}

+			return result;

+		}

+		

+		bool MatchDelegate (IType delegateType, IMethod method)

+		{

+			var delegateMethod = delegateType.GetDelegateInvokeMethod ();

+			if (delegateMethod == null || delegateMethod.Parameters.Count != method.Parameters.Count)

+				return false;

+			

+			for (int i = 0; i < delegateMethod.Parameters.Count; i++) {

+				if (!delegateMethod.Parameters [i].Type.Resolve (ctx).Equals (method.Parameters [i].Type.Resolve (ctx)))

+					return false;

+			}

+			return true;

+		}

+

+		string AddDelegateHandlers (CompletionDataWrapper completionList, IType delegateType, bool addSemicolon = true, bool addDefault = true)

+		{

+			IMethod delegateMethod = delegateType.GetDelegateInvokeMethod ();

+			var thisLineIndent = GetLineIndent (location.Line);

+			string delegateEndString = EolMarker + thisLineIndent + "}" + (addSemicolon ? ";" : "");

+			bool containsDelegateData = completionList.Result.Any (d => d.DisplayText.StartsWith ("delegate("));

+			if (addDefault)

+				completionList.AddCustom ("delegate", "Creates anonymous delegate.", "delegate {" + EolMarker + thisLineIndent + IndentString + "|" + delegateEndString);

+			var sb = new StringBuilder ("(");

+			var sbWithoutTypes = new StringBuilder ("(");

+			for (int k = 0; k < delegateMethod.Parameters.Count; k++) {

+				if (k > 0) {

+					sb.Append (", ");

+					sbWithoutTypes.Append (", ");

+				}

+				var parameterType = delegateMethod.Parameters [k].Type.Resolve (ctx);

+				sb.Append (GetShortType (parameterType, GetState ()));

+				sb.Append (" ");

+				sb.Append (delegateMethod.Parameters [k].Name);

+				sbWithoutTypes.Append (delegateMethod.Parameters [k].Name);

+			}

+			sb.Append (")");

+			sbWithoutTypes.Append (")");

+			completionList.AddCustom ("delegate" + sb, "Creates anonymous delegate.", "delegate" + sb + " {" + EolMarker + thisLineIndent + IndentString + "|" + delegateEndString);

+			if (!completionList.Result.Any (data => data.DisplayText == sbWithoutTypes.ToString ()))

+				completionList.AddCustom (sbWithoutTypes.ToString (), "Creates lambda expression.", sbWithoutTypes + " => |" + (addSemicolon ? ";" : ""));

+			/* TODO:Make factory method out of it.

+			// It's  needed to temporarly disable inserting auto matching bracket because the anonymous delegates are selectable with '('

+			// otherwise we would end up with () => )

+			if (!containsDelegateData) {

+				var savedValue = MonoDevelop.SourceEditor.DefaultSourceEditorOptions.Instance.AutoInsertMatchingBracket;

+				MonoDevelop.SourceEditor.DefaultSourceEditorOptions.Instance.AutoInsertMatchingBracket = false;

+				completionList.Result.CompletionListClosed += delegate {

+					MonoDevelop.SourceEditor.DefaultSourceEditorOptions.Instance.AutoInsertMatchingBracket = savedValue;

+				};

+			}*/

+			return sb.ToString ();

+		}

+		

+		bool IsAccessibleFrom (IEntity member, ITypeDefinition calledType, IMember currentMember, bool includeProtected)

+		{

+			if (currentMember == null)

+				return member.IsStatic || member.IsPublic;

+//			if (currentMember is MonoDevelop.Projects.Dom.BaseResolveResult.BaseMemberDecorator) 

+//				return member.IsPublic | member.IsProtected;

+			//		if (member.IsStatic && !IsStatic)

+			//			return false;

+			if (member.IsPublic || calledType != null && calledType.Kind == TypeKind.Interface && !member.IsProtected)

+				return true;

+			if (member.DeclaringTypeDefinition != null) {

+				if (member.DeclaringTypeDefinition.Kind == TypeKind.Interface) 

+					return IsAccessibleFrom (member.DeclaringTypeDefinition, calledType, currentMember, includeProtected);

+			

+				if (member.IsProtected && !(member.DeclaringTypeDefinition.IsProtectedOrInternal && !includeProtected))

+					return includeProtected;

+			}

+			if (member.IsInternal || member.IsProtectedAndInternal || member.IsProtectedOrInternal) {

+				var type1 = member is ITypeDefinition ? (ITypeDefinition)member : member.DeclaringTypeDefinition;

+				var type2 = currentMember is ITypeDefinition ? (ITypeDefinition)currentMember : currentMember.DeclaringTypeDefinition;

+				bool result;

+				// easy case, projects are the same

+				if (type1.ProjectContent == type2.ProjectContent) {

+					result = true; 

+				} else if (type1.ProjectContent != null) {

+					// maybe type2 hasn't project dom set (may occur in some cases), check if the file is in the project

+					//TODO !!

+//					result = type1.ProjectContent.Annotation<MonoDevelop.Projects.Project> ().GetProjectFile (type2.Region.FileName) != null;

+					result = false;

+				} else if (type2.ProjectContent != null) {

+					//TODO!!

+//					result = type2.ProjectContent.Annotation<MonoDevelop.Projects.Project> ().GetProjectFile (type1.Region.FileName) != null;

+					result = false;

+				} else {

+					// should never happen !

+					result = true;

+				}

+				return member.IsProtectedAndInternal ? includeProtected && result : result;

+			}

+			

+			if (!(currentMember is IType) && (currentMember.DeclaringTypeDefinition == null || member.DeclaringTypeDefinition == null))

+				return false;

+			

+			// inner class 

+			var declaringType = currentMember.DeclaringTypeDefinition;

+			while (declaringType != null) {

+				if (declaringType.ReflectionName == currentMember.DeclaringType.ReflectionName)

+					return true;

+				declaringType = declaringType.DeclaringTypeDefinition;

+			}

+			

+			

+			return currentMember.DeclaringTypeDefinition != null && member.DeclaringTypeDefinition.FullName == currentMember.DeclaringTypeDefinition.FullName;

+		}

+		

+		IEnumerable<ICompletionData> CreateTypeAndNamespaceCompletionData (TextLocation location, ResolveResult resolveResult, AstNode resolvedNode, CSharpResolver state)

+		{

+			if (resolveResult == null || resolveResult.IsError)

+				return null;

+			var result = new CompletionDataWrapper (this);

+			

+			if (resolveResult is NamespaceResolveResult) {

+				var nr = (NamespaceResolveResult)resolveResult;

+				foreach (var cl in ctx.GetTypes (nr.NamespaceName, StringComparer.Ordinal)) {

+					result.AddType (cl, cl.Name);

+				}

+				foreach (var ns in ctx.GetNamespaces ().Where (n => n.Length > nr.NamespaceName.Length && n.StartsWith (nr.NamespaceName))) {

+					result.AddNamespace (nr.NamespaceName, ns);

+				}

+			} else if (resolveResult is TypeResolveResult) {

+				var type = resolveResult.Type.Resolve (ctx);

+				foreach (var nested in type.GetNestedTypes (ctx)) {

+					result.AddType (nested, nested.Name);

+				}

+			}

+			return result.Result;

+		}

+		

+		IEnumerable<ICompletionData> CreateTypeList ()

+		{

+			foreach (var cl in ctx.GetTypes ("", StringComparer.Ordinal)) {

+				yield return factory.CreateTypeCompletionData (cl, cl.Name);

+			}

+			foreach (var ns in ctx.GetNamespaces ()) {

+				string name = ns;

+				int idx = name.IndexOf (".");

+				if (idx >= 0)

+					name = name.Substring (0, idx);

+				yield return factory.CreateNamespaceCompletionData (name);

+			}

+		}

+		

+		public ITypeDefinition GetTypeFromContext (ITypeDefinition type)

+		{

+			if (type == null || type.DeclaringType != null)

+				return type;

+			var result = ctx.GetTypeDefinition (type.Namespace, type.Name, type.TypeParameterCount, StringComparer.Ordinal) ?? type;

+			if (result.GetParts ().Count == 1)

+				return type;

+//			Console.WriteLine ("result:"+  result);

+			return result;

+		}

+		

+		IEnumerable<ICompletionData> CreateParameterCompletion (MethodGroupResolveResult resolveResult, CSharpResolver state, AstNode invocation, int parameter, bool controlSpace)

+		{

+			var result = new CompletionDataWrapper (this);

+			var addedEnums = new HashSet<string> ();

+			var addedDelegates = new HashSet<string> ();

+			

+			foreach (var method in resolveResult.Methods) {

+				if (method.Parameters.Count <= parameter)

+					continue;

+				var resolvedType = method.Parameters [parameter].Type.Resolve (ctx);

+				if (resolvedType.Kind == TypeKind.Enum) {

+					if (addedEnums.Contains (resolvedType.ReflectionName))

+						continue;

+					addedEnums.Add (resolvedType.ReflectionName);

+					AddEnumMembers (result, resolvedType, state);

+				} else if (resolvedType.Kind == TypeKind.Delegate) {

+//					if (addedDelegates.Contains (resolvedType.DecoratedFullName))

+//						continue;

+//					addedDelegates.Add (resolvedType.DecoratedFullName);

+//					string parameterDefinition = AddDelegateHandlers (completionList, resolvedType, false, addedDelegates.Count == 1);

+//					string varName = "Handle" + method.Parameters [parameter].ReturnType.Name + method.Parameters [parameter].Name;

+//					result.Add (new EventCreationCompletionData (document, varName, resolvedType, null, parameterDefinition, resolver.Unit.GetMemberAt (location), resolvedType) { AddSemicolon = false });

+				

+				}

+			}

+			if (!controlSpace) {

+				if (addedEnums.Count + addedDelegates.Count == 0)

+					return Enumerable.Empty<ICompletionData> ();

+				AutoCompleteEmptyMatch = false;

+				AutoSelect = false;

+			}

+			AddContextCompletion (result, state, invocation);

+			

+//			resolver.AddAccessibleCodeCompletionData (ExpressionContext.MethodBody, cdc);

+//			if (addedDelegates.Count > 0) {

+//				foreach (var data in result.Result) {

+//					if (data is MemberCompletionData) 

+//						((MemberCompletionData)data).IsDelegateExpected = true;

+//				}

+//			}

+			return result.Result;

+		}

+		

+		string GetShortType (IType type, CSharpResolver state)

+		{

+			var builder = new TypeSystemAstBuilder (state);

+			var shortType = builder.ConvertType (type);

+			using (var w = new System.IO.StringWriter ()) {

+				var visitor = new CSharpOutputVisitor (w, FormattingPolicy);

+				shortType.AcceptVisitor (visitor, null);

+				return w.ToString ();

+			}

+		}

+		

+		void AddEnumMembers (CompletionDataWrapper completionList, IType resolvedType, CSharpResolver state)

+		{

+			if (resolvedType.Kind != TypeKind.Enum)

+				return;

+			string typeString = GetShortType (resolvedType, state);

+			if (typeString.Contains ("."))

+				completionList.AddType (resolvedType, typeString);

+			foreach (var field in resolvedType.GetFields (ctx)) {

+				if (field.IsConst || field.IsStatic)

+					completionList.Result.Add (factory.CreateEntityCompletionData (field, typeString + "." + field.Name));

+			}

+			DefaultCompletionString = typeString;

+		}

+		

+		IEnumerable<ICompletionData> CreateCompletionData (TextLocation location, ResolveResult resolveResult, AstNode resolvedNode, CSharpResolver state)

+		{

+			if (resolveResult == null /*|| resolveResult.IsError*/)

+				return null;

+			if (resolveResult is NamespaceResolveResult) {

+				var nr = (NamespaceResolveResult)resolveResult;

+				var namespaceContents = new CompletionDataWrapper (this);

+				foreach (var cl in ctx.GetTypes (nr.NamespaceName, StringComparer.Ordinal)) {

+					namespaceContents.AddType (cl, cl.Name);

+				}

+				foreach (var ns in ctx.GetNamespaces ().Where (n => n.Length > nr.NamespaceName.Length && n.StartsWith (nr.NamespaceName))) {

+					namespaceContents.AddNamespace (nr.NamespaceName, ns);

+				}

+				

+				return namespaceContents.Result;

+			}

+			

+			IType type = GetTypeFromContext (resolveResult.Type.GetDefinition ()) ?? resolveResult.Type;

+			var typeDef = resolveResult.Type.GetDefinition ();

+			var lookup = new MemberLookup (ctx, currentType, ProjectContent);

+			var result = new CompletionDataWrapper (this);

+			bool isProtectedAllowed = false;

+			bool includeStaticMembers = false;

+			

+			if (resolveResult is LocalResolveResult) {

+				isProtectedAllowed = currentType != null && typeDef != null ? typeDef.GetAllBaseTypeDefinitions (ctx).Any (bt => bt.Equals (currentType)) : false;

+				if (resolvedNode is IdentifierExpression) {

+					var mrr = (LocalResolveResult)resolveResult;

+					includeStaticMembers = mrr.Variable.Name == mrr.Type.Name;

+				}

+			} else {

+				isProtectedAllowed = currentType != null && typeDef != null ? currentType.GetAllBaseTypeDefinitions (ctx).Any (bt => bt.Equals (typeDef)) : false;

+			}

+			if (resolveResult is TypeResolveResult && type.Kind == TypeKind.Enum) {

+				foreach (var field in type.GetFields (ctx)) {

+					result.AddMember (field);

+				}

+				foreach (var m in type.GetMethods (ctx)) {

+					if (m.Name == "TryParse")

+						result.AddMember (m);

+				}

+				return result.Result;

+			}

+			

+			if (resolveResult is MemberResolveResult && resolvedNode is IdentifierExpression) {

+				var mrr = (MemberResolveResult)resolveResult;

+				includeStaticMembers = mrr.Member.Name == mrr.Type.Name;

+			}

+			

+//			Console.WriteLine ("type:" + type +"/"+type.GetType ());

+//			Console.WriteLine ("IS PROT ALLOWED:" + isProtectedAllowed);

+//			Console.WriteLine (resolveResult);

+//			Console.WriteLine (currentMember !=  null ? currentMember.IsStatic : "currentMember == null");

+			if (resolvedNode.Annotation<ObjectCreateExpression> () == null) { //tags the created expression as part of an object create expression.

+				foreach (var member in type.GetMembers (ctx)) {

+					if (!lookup.IsAccessible (member, isProtectedAllowed)) {

+	//					Console.WriteLine ("skip access: " + member.FullName);

+						continue;

+					}

+					if (resolvedNode is BaseReferenceExpression && member.IsAbstract)

+						continue;

+					

+					if (!includeStaticMembers && member.IsStatic && !(resolveResult is TypeResolveResult)) {

+	//					Console.WriteLine ("skip static member: " + member.FullName);

+						continue;

+					}

+					if (!member.IsStatic && (resolveResult is TypeResolveResult)) {

+	//					Console.WriteLine ("skip non static member: " + member.FullName);

+						continue;

+					}

+	//				Console.WriteLine ("add : "+ member.FullName + " --- " + member.IsStatic);

+					result.AddMember (member);

+				}

+			}

+			

+			if (resolveResult is TypeResolveResult || includeStaticMembers) {

+				foreach (var nested in type.GetNestedTypes (ctx)) {

+					result.AddType (nested, nested.Name);

+				}

+				

+			} else {

+				var baseTypes = new List<IType> (type.GetAllBaseTypes (ctx));

+				var conv = new Conversions (ctx);

+				for (var n = state.CurrentUsingScope; n != null; n = n.Parent) {

+					AddExtensionMethods (result, conv, baseTypes, n.NamespaceName);

+					foreach (var u in n.Usings) {

+						var ns = u.ResolveNamespace (ctx);

+						if (ns == null)

+							continue;

+						AddExtensionMethods (result, conv, baseTypes, ns.NamespaceName);

+					}

+				}

+			}

+			

+//			IEnumerable<object> objects = resolveResult.CreateResolveResult (dom, resolver != null ? resolver.CallingMember : null);

+//			CompletionDataCollector col = new CompletionDataCollector (this, dom, result, Document.CompilationUnit, resolver != null ? resolver.CallingType : null, location);

+//			col.HideExtensionParameter = !resolveResult.StaticResolve;

+//			col.NamePrefix = expressionResult.Expression;

+//			bool showOnlyTypes = expressionResult.Contexts.Any (ctx => ctx == ExpressionContext.InheritableType || ctx == ExpressionContext.Constraints);

+//			if (objects != null) {

+//				foreach (object obj in objects) {

+//					if (expressionResult.ExpressionContext != null && expressionResult.ExpressionContext.FilterEntry (obj))

+//						continue;

+//					if (expressionResult.ExpressionContext == ExpressionContext.NamespaceNameExcepted && !(obj is Namespace))

+//						continue;

+//					if (showOnlyTypes && !(obj is IType))

+//						continue;

+//					CompletionData data = col.Add (obj);

+//					if (data != null && expressionResult.ExpressionContext == ExpressionContext.Attribute && data.CompletionText != null && data.CompletionText.EndsWith ("Attribute")) {

+//						string newText = data.CompletionText.Substring (0, data.CompletionText.Length - "Attribute".Length);

+//						data.SetText (newText);

+//					}

+//				}

+//			}

+			

+			return result.Result;

+		}

+

+		void AddExtensionMethods (CompletionDataWrapper result, Conversions conv, List<IType> baseTypes, string namespaceName)

+		{

+			foreach (var typeDefinition in ctx.GetTypes (namespaceName, StringComparer.Ordinal).Where (t => t.IsStatic && t.HasExtensionMethods)) {

+				foreach (var m in typeDefinition.Methods.Where (m => m.IsExtensionMethod )) {

+					var pt = m.Parameters.First ().Type.Resolve (ctx);

+					string reflectionName = pt is ParameterizedType ? ((ParameterizedType)pt).GetDefinition ().ReflectionName : pt.ReflectionName;

+					if (baseTypes.Any (bt => (bt is ParameterizedType ? ((ParameterizedType)bt).GetDefinition ().ReflectionName : bt.ReflectionName) == reflectionName)) {

+						result.AddMember (m);

+					}

+				}

+			}

+		}

+		IEnumerable<ICompletionData> CreateCaseCompletionData (TextLocation location)

+		{

+			var unit = ParseStub ("a: break;");

+			if (unit == null)

+				return null;

+			var s = unit.GetNodeAt<SwitchStatement> (location);

+			if (s == null)

+				return null;

+			

+			var offset = document.GetOffset (s.Expression.StartLocation);

+			var expr = GetExpressionAt (offset);

+			if (expr == null)

+				return null;

+			

+			var resolveResult = ResolveExpression (expr.Item1, expr.Item2, expr.Item3);

+			if (resolveResult == null || resolveResult.Item1.Type.Kind != TypeKind.Enum) 

+				return null;

+			var wrapper = new CompletionDataWrapper (this);

+			AddEnumMembers (wrapper, resolveResult.Item1.Type, resolveResult.Item2);

+			AutoCompleteEmptyMatch = false;

+			return wrapper.Result;

+		}

+		

+		#region Parsing methods

+		Tuple<CSharpParsedFile, AstNode, CompilationUnit> GetExpressionBeforeCursor ()

+		{

+			CompilationUnit baseUnit;

+			if (currentMember == null) {

+				baseUnit = ParseStub ("st {}", false);

+				var type = baseUnit.GetNodeAt<MemberType> (location);

+				if (type == null) {

+					baseUnit = ParseStub ("a;", false);

+					type = baseUnit.GetNodeAt<MemberType> (location);

+				}

+				if (type != null) {

+					// insert target type into compilation unit, to respect the 

+					var target = type.Target;

+					target.Remove ();

+					var node = Unit.GetNodeAt (location) ?? Unit;

+					node.AddChild (target, AstNode.Roles.Type);

+					return Tuple.Create (CSharpParsedFile, (AstNode)target, Unit);

+				}

+			}

+			

+			if (currentMember == null && currentType == null) {

+				return null;

+			}

+			baseUnit = ParseStub ("a()");

+			Print (baseUnit);

+			var memberLocation = currentMember != null ? currentMember.Region.Begin : currentType.Region.Begin;

+			var mref = baseUnit.GetNodeAt<MemberReferenceExpression> (location); 

+			if (mref == null){

+				var invoke = baseUnit.GetNodeAt<InvocationExpression> (location); 

+				if (invoke != null)

+					mref = invoke.Target as MemberReferenceExpression;

+			}

+			Expression expr = null;

+			if (mref != null) {

+				expr = mref.Target.Clone ();

+				mref.Parent.ReplaceWith (expr);

+			} else {

+				Expression tref = baseUnit.GetNodeAt<TypeReferenceExpression> (location); 

+				var memberType = tref != null ? ((TypeReferenceExpression)tref).Type as MemberType : null;

+				if (memberType == null) {

+					memberType =  baseUnit.GetNodeAt<MemberType> (location); 

+					if (memberType != null) {

+						tref = baseUnit.GetNodeAt<Expression> (location); 

+						if (tref == null)

+							return null;

+					}

+					if (tref is ObjectCreateExpression) {

+						expr = new TypeReferenceExpression (memberType.Target.Clone ());

+						expr.AddAnnotation (new ObjectCreateExpression ());

+					}

+				}

+					

+				if (memberType == null)

+					return null;

+				if (expr == null)

+					expr = new TypeReferenceExpression (memberType.Target.Clone ());

+				tref.ReplaceWith (expr);

+			}

+			

+			var member = Unit.GetNodeAt<AttributedNode> (memberLocation);

+			var member2 = baseUnit.GetNodeAt<AttributedNode> (memberLocation);

+			member2.Remove ();

+			member.ReplaceWith (member2);

+			var tsvisitor = new TypeSystemConvertVisitor (ProjectContent, this.CSharpParsedFile.FileName);

+			Unit.AcceptVisitor (tsvisitor, null);

+			return Tuple.Create (tsvisitor.ParsedFile, (AstNode)expr, Unit);

+		}

+		

+		Tuple<CSharpParsedFile, AstNode, CompilationUnit> GetExpressionAtCursor ()

+		{

+//			if (currentMember == null && currentType == null)

+//				return null;

+			

+			TextLocation memberLocation;

+			if (currentMember != null) {

+				memberLocation = currentMember.Region.Begin;

+			} else if (currentType != null) {

+				memberLocation = currentType.Region.Begin;

+			} else  {

+				memberLocation = location;

+			}

+				

+			var baseUnit = ParseStub ("");

+			var tmpUnit = baseUnit;

+			AstNode expr = baseUnit.GetNodeAt<IdentifierExpression> (location.Line, location.Column - 1); 

+			if (expr == null)

+				expr = baseUnit.GetNodeAt<Attribute> (location.Line, location.Column - 1);

+			if (expr == null) {

+				baseUnit = ParseStub ("()");

+				expr = baseUnit.GetNodeAt<IdentifierExpression> (location.Line, location.Column - 1); 

+			}

+			

+			// try initializer expression

+			if (expr == null) {

+				baseUnit = ParseStub ("a = b};", false);

+				expr = baseUnit.GetNodeAt<ArrayInitializerExpression> (location.Line, location.Column - 1); 

+			}

+			

+			// try statement 

+			if (expr == null) {

+				expr = tmpUnit.GetNodeAt<SwitchStatement> (location.Line, location.Column - 1); 

+				baseUnit = tmpUnit;

+			}

+			

+			if (expr == null) {

+				var forStmt = tmpUnit.GetNodeAt<ForStatement> (location.Line, location.Column - 3); 

+				expr = forStmt;

+				if (forStmt != null && forStmt.EmbeddedStatement.IsNull) {

+					var id = new IdentifierExpression ("stub");

+					forStmt.EmbeddedStatement = new BlockStatement () { Statements = { new ExpressionStatement (id) }};

+					expr = id;

+				}

+				baseUnit = tmpUnit;

+			}

+			

+			if (expr == null)

+				return null;

+			var member = Unit.GetNodeAt<AttributedNode> (memberLocation);

+			var member2 = baseUnit.GetNodeAt<AttributedNode> (memberLocation);

+			if (member != null && member2 != null) {

+				member2.Remove ();

+				

+				if (member is TypeDeclaration) {

+					member.AddChild (member2, TypeDeclaration.MemberRole);

+				} else {

+					member.ReplaceWith (member2);

+				}

+			} else {

+				var tsvisitor2 = new TypeSystemConvertVisitor (ProjectContent, CSharpParsedFile.FileName);

+				Unit.AcceptVisitor (tsvisitor2, null);

+				return Tuple.Create (tsvisitor2.ParsedFile, expr, baseUnit);

+			}

+			var tsvisitor = new TypeSystemConvertVisitor (ProjectContent, CSharpParsedFile.FileName);

+			Unit.AcceptVisitor (tsvisitor, null);

+			return Tuple.Create (tsvisitor.ParsedFile, expr, Unit);

+		}

+		

+		Tuple<CSharpParsedFile, AstNode, CompilationUnit> GetExpressionAt (int offset)

+		{

+			var parser = new CSharpParser ();

+			string text = this.document.GetText (0, this.offset); 

+			var sb = new StringBuilder (text);

+			sb.Append ("a;");

+			AppendMissingClosingBrackets (sb, text, false);

+			var stream = new System.IO.StringReader (sb.ToString ());

+			var completionUnit = parser.Parse (stream, 0);

+			stream.Close ();

+			var loc = document.GetLocation (offset);

+			var expr = completionUnit.GetNodeAt (loc, n => n is Expression || n is VariableDeclarationStatement);

+			if (expr == null)

+				return null;

+			var tsvisitor = new TypeSystemConvertVisitor (ProjectContent, CSharpParsedFile.FileName);

+			completionUnit.AcceptVisitor (tsvisitor, null);

+			

+			return Tuple.Create (tsvisitor.ParsedFile, expr, completionUnit);

+		}

+		

+		

+		#endregion

+		

+		#region Helper methods

+		string GetPreviousToken (ref int i, bool allowLineChange)

+		{

+			char c;

+			if (i <= 0)

+				return null;

+			

+			do {

+				c = document.GetCharAt (--i);

+			} while (i > 0 && char.IsWhiteSpace (c) && (allowLineChange ? true : c != '\n'));

+			

+			if (i == 0)

+				return null;

+			

+			if (!char.IsLetterOrDigit (c))

+				return new string (c, 1);

+			

+			int endOffset = i + 1;

+			

+			do {

+				c = document.GetCharAt (i - 1);

+				if (!(char.IsLetterOrDigit (c) || c == '_'))

+					break;

+				

+				i--;

+			} while (i > 0);

+			

+			return document.GetText (i, endOffset - i);

+		}

+		

+		bool GetParameterCompletionCommandOffset (out int cpos)

+		{

+			// Start calculating the parameter offset from the beginning of the

+			// current member, instead of the beginning of the file. 

+			cpos = offset - 1;

+			IMember mem = currentMember;

+			if (mem == null || (mem is IType))

+				return false;

+			int startPos = document.GetOffset (mem.Region.BeginLine, mem.Region.BeginColumn);

+			int parenDepth = 0;

+			int chevronDepth = 0;

+			while (cpos > startPos) {

+				char c = document.GetCharAt (cpos);

+				if (c == ')')

+					parenDepth++;

+				if (c == '>')

+					chevronDepth++;

+				if (parenDepth == 0 && c == '(' || chevronDepth == 0 && c == '<') {

+					int p = GetCurrentParameterIndex (cpos + 1, startPos);

+					if (p != -1) {

+						cpos++;

+						return true;

+					} else {

+						return false;

+					}

+				}

+				if (c == '(')

+					parenDepth--;

+				if (c == '<')

+					chevronDepth--;

+				cpos--;

+			}

+			return false;

+		}

+		

+		int GetCurrentParameterIndex (int offset, int memberStart)

+		{

+			int cursor = this.offset;

+			int i = offset;

+			

+			if (i > cursor)

+				return -1;

+			if (i == cursor) 

+				return 1; // parameters are 1 based

+			int index = memberStart + 1;

+			int parentheses = 0;

+			int bracket = 0;

+			bool insideQuote = false, insideString = false, insideSingleLineComment = false, insideMultiLineComment = false;

+			do {

+				char c = document.GetCharAt (i - 1);

+				switch (c) {

+				case '\\':

+					if (insideString || insideQuote)

+						i++;

+					break;

+				case '\'':

+					if (!insideString && !insideSingleLineComment && !insideMultiLineComment)

+						insideQuote = !insideQuote;

+					break;

+				case '"':

+					if (!insideQuote && !insideSingleLineComment && !insideMultiLineComment)

+						insideString = !insideString;

+					break;

+				case '/':

+					if (!insideQuote && !insideString && !insideMultiLineComment) {

+						if (document.GetCharAt (i) == '/')

+							insideSingleLineComment = true;

+						if (document.GetCharAt (i) == '*')

+							insideMultiLineComment = true;

+					}

+					break;

+				case '*':

+					if (insideMultiLineComment && document.GetCharAt (i) == '/')

+						insideMultiLineComment = false;

+					break;

+				case '\n':

+				case '\r':

+					insideSingleLineComment = false;

+					break;

+				case '{':

+					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment)

+						bracket++;

+					break;

+				case '}':

+					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment)

+						bracket--;

+					break;

+				case '(':

+					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment)

+						parentheses++;

+					break;

+				case ')':

+					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment)

+						parentheses--;

+					break;

+				case ',':

+					if (!insideQuote && !insideString && !insideSingleLineComment && !insideMultiLineComment && parentheses == 1 && bracket == 0)

+						index++;

+					break;

+				}

+				i++;

+			} while (i <= cursor && parentheses >= 0);

+			

+			return parentheses != 1 || bracket > 0 ? -1 : index;

+		}

+		

+		CSharpResolver GetState ()

+		{

+			var state = new CSharpResolver (ctx, System.Threading.CancellationToken.None);

+			

+			state.CurrentMember = CSharpParsedFile.GetMember (location);

+			state.CurrentTypeDefinition = CSharpParsedFile.GetInnermostTypeDefinition (location);

+			state.CurrentUsingScope = CSharpParsedFile.GetUsingScope (location);

+			if (state.CurrentMember != null) {

+				var node = Unit.GetNodeAt (location);

+				if (node == null)

+					return state;

+				var navigator = new NodeListResolveVisitorNavigator (new[] { node });

+				var visitor = new ResolveVisitor (state, CSharpParsedFile, navigator);

+				Unit.AcceptVisitor (visitor, null);

+				try {

+					var newState = visitor.GetResolverStateBefore (node);

+					if (newState != null)

+						state = newState;

+				} catch (Exception) {

+				}

+			}

+			

+			return state;

+		}

+		#endregion

+		

+		#region Preprocessor

+		

+		IEnumerable<ICompletionData> GetDirectiveCompletionData ()

+		{

+			yield return factory.CreateLiteralCompletionData ("if");

+			yield return factory.CreateLiteralCompletionData ("else");

+			yield return factory.CreateLiteralCompletionData ("elif");

+			yield return factory.CreateLiteralCompletionData ("endif");

+			yield return factory.CreateLiteralCompletionData ("define");

+			yield return factory.CreateLiteralCompletionData ("undef");

+			yield return factory.CreateLiteralCompletionData ("warning");

+			yield return factory.CreateLiteralCompletionData ("error");

+			yield return factory.CreateLiteralCompletionData ("pragma");

+			yield return factory.CreateLiteralCompletionData ("line");

+			yield return factory.CreateLiteralCompletionData ("line hidden");

+			yield return factory.CreateLiteralCompletionData ("line default");

+			yield return factory.CreateLiteralCompletionData ("region");

+			yield return factory.CreateLiteralCompletionData ("endregion");

+		}

+		#endregion

+		

+		#region Xml Comments

+		static readonly List<string> commentTags = new List<string> (new string[] { "c", "code", "example", "exception", "include", "list", "listheader", "item", "term", "description", "para", "param", "paramref", "permission", "remarks", "returns", "see", "seealso", "summary", "value" });

+		

+		IEnumerable<ICompletionData> GetXmlDocumentationCompletionData ()

+		{

+			yield return factory.CreateLiteralCompletionData ("c", "Set text in a code-like font");

+			yield return factory.CreateLiteralCompletionData ("code", "Set one or more lines of source code or program output");

+			yield return factory.CreateLiteralCompletionData ("example", "Indicate an example");

+			yield return factory.CreateLiteralCompletionData ("exception", "Identifies the exceptions a method can throw", "exception cref=\"|\"></exception>");

+			yield return factory.CreateLiteralCompletionData ("include", "Includes comments from a external file", "include file=\"|\" path=\"\">");

+			yield return factory.CreateLiteralCompletionData ("list", "Create a list or table", "list type=\"|\">");

+			yield return factory.CreateLiteralCompletionData ("listheader", "Define the heading row");

+			yield return factory.CreateLiteralCompletionData ("item", "Defines list or table item");

+			

+			yield return factory.CreateLiteralCompletionData ("term", "A term to define");

+			yield return factory.CreateLiteralCompletionData ("description", "Describes a list item");

+			yield return factory.CreateLiteralCompletionData ("para", "Permit structure to be added to text");

+			

+			yield return factory.CreateLiteralCompletionData ("param", "Describe a parameter for a method or constructor", "param name=\"|\">");

+			yield return factory.CreateLiteralCompletionData ("paramref", "Identify that a word is a parameter name", "paramref name=\"|\"/>");

+			

+			yield return factory.CreateLiteralCompletionData ("permission", "Document the security accessibility of a member", "permission cref=\"|\"");

+			yield return factory.CreateLiteralCompletionData ("remarks", "Describe a type");

+			yield return factory.CreateLiteralCompletionData ("returns", "Describe the return value of a method");

+			yield return factory.CreateLiteralCompletionData ("see", "Specify a link", "see cref=\"|\"/>");

+			yield return factory.CreateLiteralCompletionData ("seealso", "Generate a See Also entry", "seealso cref=\"|\"/>");

+			yield return factory.CreateLiteralCompletionData ("summary", "Describe a member of a type");

+			yield return factory.CreateLiteralCompletionData ("typeparam", "Describe a type parameter for a generic type or method");

+			yield return factory.CreateLiteralCompletionData ("typeparamref", "Identify that a word is a type parameter name");

+			yield return factory.CreateLiteralCompletionData ("value", "Describe a property");

+		}

+		#endregion

+		

+		#region Keywords

+		static string[] expressionLevelKeywords = new string [] { "as", "is", "else", "out", "ref", "null", "delegate", "default"};

+		

+		static string[] primitiveTypesKeywords = new string [] { "void", "object", "bool", "byte", "sbyte", "char", "short", "int", "long", "ushort", "uint", "ulong", "float", "double", "decimal", "string"};

+		

+		static string[] statementStartKeywords = new string [] { "base", "new", "sizeof", "this", 

+			"true", "false", "typeof", "checked", "unchecked", "from", "break", "checked",

+			"unchecked", "const", "continue", "do", "finally", "fixed", "for", "foreach",

+			"goto", "if", "lock", "return", "stackalloc", "switch", "throw", "try", "unsafe", 

+			"using", "while", "yield", "dynamic", "var" };

+		

+		static string[] globalLevelKeywords = new string [] {

+			"namespace", "using", "extern", "public", "internal", 

+			"class", "interface", "struct", "enum", "delegate",

+			"abstract", "sealed", "static", "unsafe", "partial"

+		};

+		

+		static string[] accessorModifierKeywords = new string [] {

+			"public", "internal", "protected", "private"

+		};

+		

+		static string[] typeLevelKeywords = new string [] {

+			"public", "internal", "protected", "private",

+			"class", "interface", "struct", "enum", "delegate",

+			"abstract", "sealed", "static", "unsafe", "partial",

+			"const", "event", "extern", "fixed","new", 

+			"operator", "explicit", "implicit", 

+			"override", "readonly", "virtual", "volatile"

+		};

+		static string[] linqKeywords = new string[] { "from", "where", "select", "group", "into", "orderby", "join", "let", "in", "on", "equals", "by", "ascending", "descending" };

+		#endregion

+	}

+}

+