TryGetCompletionWord() public méthode

public TryGetCompletionWord ( int offset, int &startPos, int &wordLength ) : bool
offset int
startPos int
wordLength int
Résultat bool
		bool ShowCompletion(ITextEditor editor, char completionChar, bool ctrlSpace)
		{
			var completionContext = CSharpCompletionContext.Get(editor);
			if (completionContext == null)
				return false;
			
			var completionFactory = new CSharpCompletionDataFactory(completionContext, new CSharpResolver(completionContext.TypeResolveContextAtCaret));
			CSharpCompletionEngine cce = new CSharpCompletionEngine(
				editor.Document,
				completionContext.CompletionContextProvider,
				completionFactory,
				completionContext.ProjectContent,
				completionContext.TypeResolveContextAtCaret
			);
			
			cce.FormattingPolicy = FormattingOptionsFactory.CreateSharpDevelop();
			cce.EolMarker = DocumentUtilities.GetLineTerminator(editor.Document, editor.Caret.Line);
			cce.IndentString = editor.Options.IndentationString;
			
			int startPos, triggerWordLength;
			IEnumerable<ICompletionData> completionData;
			if (ctrlSpace) {
				if (!cce.TryGetCompletionWord(editor.Caret.Offset, out startPos, out triggerWordLength)) {
					startPos = editor.Caret.Offset;
					triggerWordLength = 0;
				}
				completionData = cce.GetCompletionData(startPos, true);
				completionData = completionData.Concat(cce.GetImportCompletionData(startPos));
			} else {
				startPos = editor.Caret.Offset;
				if (char.IsLetterOrDigit (completionChar) || completionChar == '_') {
					if (startPos > 1 && char.IsLetterOrDigit (editor.Document.GetCharAt (startPos - 2)))
						return false;
					completionData = cce.GetCompletionData(startPos, false);
					startPos--;
					triggerWordLength = 1;
				} else {
					completionData = cce.GetCompletionData(startPos, false);
					triggerWordLength = 0;
				}
			}
			
			DefaultCompletionItemList list = new DefaultCompletionItemList();
			list.Items.AddRange(completionData.Cast<ICompletionItem>());
			if (list.Items.Count > 0) {
				list.SortItems();
				list.PreselectionLength = editor.Caret.Offset - startPos;
				list.PostselectionLength = Math.Max(0, startPos + triggerWordLength - editor.Caret.Offset);
				list.SuggestedItem = list.Items.FirstOrDefault(i => i.Text == cce.DefaultCompletionString);
				editor.ShowCompletionWindow(list);
				return true;
			}
			
			if (!ctrlSpace) {
				// Method Insight
				var pce = new CSharpParameterCompletionEngine(
					editor.Document,
					completionContext.CompletionContextProvider,
					completionFactory,
					completionContext.ProjectContent,
					completionContext.TypeResolveContextAtCaret
				);
				var newInsight = pce.GetParameterDataProvider(editor.Caret.Offset, completionChar) as CSharpMethodInsight;
				if (newInsight != null && newInsight.items.Count > 0) {
					newInsight.UpdateHighlightedParameter(pce);
					newInsight.Show();
					return true;
				}
			}
			return false;
		}
        public CodeCompletionResult GetCompletions(IDocument document, int offset, bool controlSpace, string usings, string variables)
        {
            var result = new CodeCompletionResult();

            if (String.IsNullOrEmpty(document.FileName))
                return result;

            var completionContext = new CSharpCompletionContext(document, offset, projectContent, usings, variables);

            var completionFactory = new CSharpCompletionDataFactory(completionContext.TypeResolveContextAtCaret, completionContext);
            var cce = new CSharpCompletionEngine(
                completionContext.Document,
                completionContext.CompletionContextProvider,
                completionFactory,
                completionContext.ProjectContent,
                completionContext.TypeResolveContextAtCaret
                );

            cce.EolMarker = Environment.NewLine;
            cce.FormattingPolicy = FormattingOptionsFactory.CreateSharpDevelop();


            var completionChar = completionContext.Document.GetCharAt(completionContext.Offset - 1);
            int startPos, triggerWordLength;
            IEnumerable<ICSharpCode.NRefactory.Completion.ICompletionData> completionData;
            if (controlSpace)
            {
                if (!cce.TryGetCompletionWord(completionContext.Offset, out startPos, out triggerWordLength))
                {
                    startPos = completionContext.Offset;
                    triggerWordLength = 0;
                }
                completionData = cce.GetCompletionData(startPos, true);
                //this outputs tons of available entities
                //if (triggerWordLength == 0)
                //    completionData = completionData.Concat(cce.GetImportCompletionData(startPos));
            }
            else
            {
                startPos = completionContext.Offset;

                if (char.IsLetterOrDigit(completionChar) || completionChar == '_')
                {
                    if (startPos > 1 && char.IsLetterOrDigit(completionContext.Document.GetCharAt(startPos - 2)))
                        return result;
                    completionData = cce.GetCompletionData(startPos, false);
                    startPos--;
                    triggerWordLength = 1;
                }
                else
                {
                    completionData = cce.GetCompletionData(startPos, false);
                    triggerWordLength = 0;
                }
            }

            result.TriggerWordLength = triggerWordLength;
            result.TriggerWord = completionContext.Document.GetText(completionContext.Offset - triggerWordLength, triggerWordLength);
            Debug.Print("Trigger word: '{0}'", result.TriggerWord);

            //cast to AvalonEdit completion data and add to results
            foreach (var completion in completionData)
            {
                var cshellCompletionData = completion as ICSharpCode.CodeCompletion.DataItems.CompletionData;
                if (cshellCompletionData != null)
                {
                    cshellCompletionData.TriggerWord = result.TriggerWord;
                    cshellCompletionData.TriggerWordLength = result.TriggerWordLength;
                    result.CompletionData.Add(cshellCompletionData);
                }
            }

            //method completions
            if (!controlSpace)
            {
                // Method Insight
                var pce = new CSharpParameterCompletionEngine(
                    completionContext.Document,
                    completionContext.CompletionContextProvider,
                    completionFactory,
                    completionContext.ProjectContent,
                    completionContext.TypeResolveContextAtCaret
                );

                var parameterDataProvider = pce.GetParameterDataProvider(completionContext.Offset, completionChar);
                result.OverloadProvider = parameterDataProvider as IOverloadProvider;
            }

            return result;
        }
        public static ProjectAnalysisResult RunFullProjectAnalysis(ProjectAnalysisRequest projectAnalysisRequest) // ProjectModel projectModel, int fileId, int line, int column)
        {
            Stopwatch sw = Stopwatch.StartNew();

            ProjectAnalysisResult projectAnalysisResult = new ProjectAnalysisResult();
            ProjectModel projectModel = projectAnalysisRequest.ProjectModel;


            // Set up the project (if not already done)
            if (projectModel.ProjectContent == null)
            {
                projectModel.ProjectContent = new CSharpProjectContent();
                projectModel.ProjectContent = projectModel.ProjectContent.AddAssemblyReferences(QCReferences.Value);
            }

            // For each new file, we need to integrate it into the project content
            var fileModelsInProject = projectModel.GetFileDescendants().ToArray();
            foreach (var fileModelInProject in fileModelsInProject)
            {
                IntegrateFileModel(projectModel, fileModelInProject);
            }

            // We can return now if no code completion was requested
            if (projectAnalysisRequest.CodeCompletionParameters == null)
            {
                projectAnalysisResult.TimeElapsed = sw.Elapsed;
                return projectAnalysisResult;
            }

            // Now it's time to give attention specifically to the matter of resolving the code completion
            // options.  This, of course, requires a deeper analysis of the specified file...
            
            var codeCompletionParams = projectAnalysisRequest.CodeCompletionParameters;

            // Locate the file in the project
            ProjectFileModel fileModel = projectModel.FindFile(codeCompletionParams.FileId);
            if (fileModel == null)
                throw new Exception("Specified file does not exist in this project");
            

            // Create a TypeSystem.ICompilation that allows resolving within the project.
            var compilation = projectModel.ProjectContent.CreateCompilation();

            #region Resolve text cursor/caret location
            
            // The text cursor position is crucial to creating a properly-scoped type resolution context
            // so as to get relevant code completion suggestions.
            int textCursorOffset;
            TextLocation textCursorLocation;
            ReadOnlyDocument doc = new ReadOnlyDocument(fileModel.Content);
            if (codeCompletionParams.Line == 0 && codeCompletionParams.Column == 0)
            {
                textCursorOffset = codeCompletionParams.Offset;
                textCursorLocation = doc.GetLocation(textCursorOffset);
                codeCompletionParams.Line = textCursorLocation.Line;
                codeCompletionParams.Column = textCursorLocation.Column;
            }
            else
            {
                textCursorLocation = new TextLocation(codeCompletionParams.Line, codeCompletionParams.Column);
                textCursorOffset = doc.GetOffset(textCursorLocation);
                codeCompletionParams.Offset = textCursorOffset;
            }

            #endregion

            #region Create and Refine the type resolution context as much as possible based upon the cursor position

            var typeResolveContext = new CSharpTypeResolveContext(compilation.MainAssembly);
            // Constrain the resolve context by using scope
            typeResolveContext = typeResolveContext
                .WithUsingScope(fileModel.UnresolvedFile.GetUsingScope(textCursorLocation)
                .Resolve(compilation));

            var curDef = fileModel.UnresolvedFile.GetInnermostTypeDefinition(textCursorLocation);
            if (curDef != null)
            {
                var resolvedDef = curDef.Resolve(typeResolveContext).GetDefinition();
                typeResolveContext = typeResolveContext.WithCurrentTypeDefinition(resolvedDef);
                var curMember = resolvedDef.Members.FirstOrDefault(m => m.Region.Begin <= textCursorLocation && textCursorLocation < m.BodyRegion.End);
                if (curMember != null)
                {
                    typeResolveContext = typeResolveContext.WithCurrentMember(curMember);
                }
            }

            #endregion

            // The purpose of the rest of these steps is a little fuzzy in my mind...  
            // I'm still trying to understand them fully and if/why they're all needed.
            // It seems there is some redundancy here...

            var completionContext = new DefaultCompletionContextProvider(doc, fileModel.UnresolvedFile);

            #region Add Preprocessor Symbols??
            completionContext.AddSymbol("TEST");
            foreach (var sym in fileModel.SyntaxTree.ConditionalSymbols)
                completionContext.AddSymbol(sym);
            #endregion

            var completionDataFactory = new TestCompletionDataFactory(new CSharpResolver(typeResolveContext));
            
            var completionEngine = new CSharpCompletionEngine(doc, completionContext, completionDataFactory, projectModel.ProjectContent, typeResolveContext);
            completionEngine.EolMarker = Environment.NewLine;
            completionEngine.FormattingPolicy = FormattingOptionsFactory.CreateMono();
            projectModel.CompletionEngine = completionEngine;

#region Debugging Aid
            // Resolve content around text cursor
            int numberOfCharactersAroundCursorToResolve = 20;
            int firstCharOffset = textCursorOffset - numberOfCharactersAroundCursorToResolve/2;
            if (firstCharOffset < 0)
                firstCharOffset = 0;
            if (doc.TextLength < firstCharOffset+numberOfCharactersAroundCursorToResolve)
                numberOfCharactersAroundCursorToResolve = doc.TextLength - firstCharOffset;
            string surroundingText = doc.GetText(firstCharOffset, numberOfCharactersAroundCursorToResolve);
            Debug.WriteLine("Text around cursor: [{0}]", surroundingText);
#endregion

            // Finally, generate completion data!
            var completionOptions = completionEngine.GetCompletionData(textCursorOffset, projectAnalysisRequest.CodeCompletionParameters.CtrlSpace).ToArray();
            projectAnalysisResult.CompletionOptions = completionEngine.GetCompletionData(textCursorOffset, projectAnalysisRequest.CodeCompletionParameters.CtrlSpace).ToArray();
            projectAnalysisResult.AutoCompleteEmptyMatch = completionEngine.AutoCompleteEmptyMatch;
            projectAnalysisResult.AutoSelect = completionEngine.AutoSelect;
            projectAnalysisResult.DefaultCompletionString = completionEngine.DefaultCompletionString;

            int startPos, wordLength;
            if (completionEngine.TryGetCompletionWord(textCursorOffset, out startPos, out wordLength))
            {
                Debug.WriteLine("TryGetCompletionWord :: startpos:{0}  wordlength:{1}", startPos, wordLength);
                projectAnalysisResult.CompletionWord = doc.GetText(startPos, wordLength);
            }

            projectAnalysisResult.TimeElapsed = sw.Elapsed;

            return projectAnalysisResult;
        }
        //// todo: eliminate this method later
        //private static void AugmentProjectModelWithAlgorithmBase(ProjectModel model)
        //{
        //    model.Children.Add(QcAlgorithmFileModel.Value);
        //}

        public static ProjectAnalysisResult RunFullProjectAnalysis(ProjectAnalysisRequest projectAnalysisRequest)
        {
            Stopwatch sw = Stopwatch.StartNew();

            ProjectAnalysisResult projectAnalysisResult = new ProjectAnalysisResult();
            ProjectModel projectModel = projectAnalysisRequest.ProjectModel;

            // todo: Ask Jared why QCAlgorithm is a partial class and why it's not included in "common"

#if false
            // ************************************************************************************
            // NOTE:  In order to get this project building cleanly, with minimal dependencies 
            // before checking into Github, I've removed all hard QuantConnect dependencies,
            // including the QCAlgorithm.cs embedded resource and the assembly references to 
            // QuantConnect.Algorithm.Interface

            // Augment the project model with the QCAgorithm base class
            // projectModel.Children.Add(QcAlgorithmFileModel.Value);
            
            // ************************************************************************************
#endif

            // Set up the project (if not already done)
            if (projectModel.ProjectContent == null)
            {
                projectModel.ProjectContent = new CSharpProjectContent();
                projectModel.ProjectContent = projectModel.ProjectContent.AddAssemblyReferences(QCReferences.Value);
            }

            // For each new file, we need to integrate it into the project content
            var fileModelsInProject = projectModel.GetFileDescendants().ToArray();
            foreach (var fileModelInProject in fileModelsInProject)
            {
                IntegrateFileModel(projectModel, fileModelInProject);
            }

            // We can return now if no code completion was requested
            if (projectAnalysisRequest.CodeCompletionParameters == null)
            {
                projectAnalysisResult.TimeElapsed = sw.Elapsed;
                return projectAnalysisResult;
            }

            // Now it's time to give attention specifically to the matter of resolving the code completion
            // options.  This, of course, requires a deeper analysis of the specified file...
            
            var codeCompletionParams = projectAnalysisRequest.CodeCompletionParameters;

            // Locate the file in the project
            ProjectFileModel fileModel = projectModel.FindFile(codeCompletionParams.FileId);
            if (fileModel == null)
                throw new Exception("Specified file does not exist in this project");
            

            // Create a TypeSystem.ICompilation that allows resolving within the project.
            var compilation = projectModel.ProjectContent.CreateCompilation();

            #region Resolve text cursor/caret location
            
            // The text cursor position is crucial to creating a properly-scoped type resolution context
            // so as to get relevant code completion suggestions.
            int textCursorOffset = 0;
            TextLocation textCursorLocation = new TextLocation(1, 1);
            ReadOnlyDocument doc = new ReadOnlyDocument(fileModel.Content);
            try
            {
                // if line and column aren't set, we'll assume that the cursor offset/index is set
                if (codeCompletionParams.Line == 0 && codeCompletionParams.Column == 0)
                {
                    textCursorOffset = codeCompletionParams.Offset;
                    if (textCursorOffset < 0) textCursorOffset = 0;
                    textCursorLocation = doc.GetLocation(textCursorOffset);
                }
                // if either line or column are invalid (i.e. <= 0), then we'll use offset 0 instead
                else if (codeCompletionParams.Line <= 0 || codeCompletionParams.Column <= 0)
                {
                    textCursorOffset = 0;
                }
                else
                {
                    textCursorLocation = new TextLocation(codeCompletionParams.Line, codeCompletionParams.Column);
                    textCursorOffset = doc.GetOffset(textCursorLocation);
                    codeCompletionParams.Offset = textCursorOffset;
                }
            }
            catch (Exception)
            {
                textCursorOffset = 0;
                textCursorLocation = new TextLocation(1, 1);
            }
            finally
            {
                projectAnalysisResult.Line = textCursorLocation.Line;
                projectAnalysisResult.Column = textCursorLocation.Column;
                projectAnalysisResult.Offset = textCursorOffset;
            }

            #endregion

            #region Create and Refine the type resolution context as much as possible based upon the cursor position

            var typeResolveContext = new CSharpTypeResolveContext(compilation.MainAssembly);
            // Constrain the resolve context by using scope
            typeResolveContext = typeResolveContext
                .WithUsingScope(fileModel.UnresolvedFile.GetUsingScope(textCursorLocation)
                .Resolve(compilation));

            var curDef = fileModel.UnresolvedFile.GetInnermostTypeDefinition(textCursorLocation);
            if (curDef != null)
            {
                var resolvedDef = curDef.Resolve(typeResolveContext).GetDefinition();
                typeResolveContext = typeResolveContext.WithCurrentTypeDefinition(resolvedDef);
                var curMember = resolvedDef.Members.FirstOrDefault(m => m.Region.Begin <= textCursorLocation && textCursorLocation < m.BodyRegion.End);
                if (curMember != null)
                {
                    typeResolveContext = typeResolveContext.WithCurrentMember(curMember);
                }
            }

            #endregion

            // The purpose of the rest of these steps is a little fuzzy in my mind...  
            // I'm still trying to understand them fully and if/why they're all needed.
            // It seems there is some redundancy here...

            var completionContext = new DefaultCompletionContextProvider(doc, fileModel.UnresolvedFile);

            #region Add Preprocessor Symbols??
            completionContext.AddSymbol("TEST");
            foreach (var sym in fileModel.SyntaxTree.ConditionalSymbols)
                completionContext.AddSymbol(sym);
            #endregion

            var completionDataFactory = new CodeCompletionDataFactory(new CSharpResolver(typeResolveContext));
            
            var completionEngine = new CSharpCompletionEngine(doc, completionContext, completionDataFactory, projectModel.ProjectContent, typeResolveContext);
            completionEngine.EolMarker = Environment.NewLine;
            completionEngine.FormattingPolicy = FormattingOptionsFactory.CreateMono();
            projectModel.CompletionEngine = completionEngine;

            // Attach contextual info to analysis result
            GetDocumentContext(projectAnalysisResult, textCursorOffset, doc);

            // Finally, generate completion data!
            var completionOptions = completionEngine.GetCompletionData(textCursorOffset, projectAnalysisRequest.CodeCompletionParameters.CtrlSpace).ToArray();

            projectAnalysisResult.CompletionOptions = completionOptions.OrderBy(x => x.CompletionText).ToArray();
            projectAnalysisResult.AutoCompleteEmptyMatch = completionEngine.AutoCompleteEmptyMatch;
            projectAnalysisResult.AutoSelect = completionEngine.AutoSelect;
            projectAnalysisResult.DefaultCompletionString = completionEngine.DefaultCompletionString;

            int startPos, wordLength;
            if (completionEngine.TryGetCompletionWord(textCursorOffset, out startPos, out wordLength))
            {
                //Debug.WriteLine("TryGetCompletionWord :: startpos:{0}  wordlength:{1}", startPos, wordLength);
                string completionWord = projectAnalysisResult.CompletionWord = doc.GetText(startPos, wordLength);

                if (!string.IsNullOrWhiteSpace(completionWord))
                {
                    var bestMatch = projectAnalysisResult.CompletionOptions
                        .FirstOrDefault(x => x.CompletionText.CompareTo(completionWord) >= 0);
                    projectAnalysisResult.BestMatchToCompletionWord = bestMatch;
                    //if (bestMatch != null)
                        //projectAnalysisResult.BestMatchToCompletionWord = bestMatch.CompletionText;
                }
            }

            projectAnalysisResult.TimeElapsed = sw.Elapsed;

            return projectAnalysisResult;
        }
    protected override CodeCompletionResult GetCodeCompletionResult(bool controlSpace) {
      var document = codeEditor.TextEditor.Document;
      int offset = codeEditor.TextEditor.CaretOffset;
      var result = new CodeCompletionResult();

      try {
        var completionContext = new CSharpCodeCompletionContext(document, offset, projectContent);
        var completionFactory = new CSharpCodeCompletionDataFactory(completionContext);
        var cce = new CSharpCompletionEngine(
          completionContext.Document,
          completionContext.CompletionContextProvider,
          completionFactory,
          completionContext.ProjectContent,
          completionContext.TypeResolveContextAtCaret
          );

        char completionChar = completionContext.Document.GetCharAt(completionContext.Offset - 1);
        int startPos, triggerWordLength;
        IEnumerable<ICompletionData> completionData;

        if (controlSpace) {
          if (!cce.TryGetCompletionWord(completionContext.Offset, out startPos, out triggerWordLength)) {
            startPos = completionContext.Offset;
            triggerWordLength = 0;
          }
          completionData = cce.GetCompletionData(startPos, true);
        } else {
          startPos = completionContext.Offset;
          if (char.IsLetterOrDigit(completionChar) || completionChar == '_') {
            if (startPos > 1 && char.IsLetterOrDigit(completionContext.Document.GetCharAt((startPos - 2))))
              return result;
            completionData = cce.GetCompletionData(startPos, false);
            triggerWordLength = 1;
          } else {
            completionData = cce.GetCompletionData(startPos, false);
            triggerWordLength = 0;
          }
        }

        result.TriggerWordLength = triggerWordLength;
        result.TriggerWord = completionContext.Document.GetText(completionContext.Offset - triggerWordLength, triggerWordLength);

        if (completionData.Any() && cce.AutoCompleteEmptyMatch) {
          foreach (var completion in completionData) {
            var cast = completion as CompletionData;
            if (cast != null) {
              cast.TriggerWord = result.TriggerWord;
              cast.TriggerWordLength = result.TriggerWordLength;
              result.CompletionData.Add(cast);
            }
          }
        }

        if (!controlSpace) {
          var pce = new CSharpParameterCompletionEngine(
            completionContext.Document,
            completionContext.CompletionContextProvider,
            completionFactory,
            completionContext.ProjectContent,
            completionContext.TypeResolveContextAtCaret
            );

          var parameterDataProvider = pce.GetParameterDataProvider(completionContext.Offset, completionChar);
          result.OverloadProvider = parameterDataProvider as IUpdatableOverloadProvider;
        }
      } catch {
        // ignore exceptions thrown during code completion
      }

      return result;
    }
		bool ShowCompletion(ITextEditor editor, char completionChar, bool ctrlSpace)
		{
			CSharpCompletionContext completionContext;
			if (fileContent == null) {
				completionContext = CSharpCompletionContext.Get(editor);
			} else {
				completionContext = CSharpCompletionContext.Get(editor, context, currentLocation, fileContent);
			}
			if (completionContext == null)
				return false;
			
			int caretOffset;
			if (fileContent == null) {
				caretOffset = editor.Caret.Offset;
				currentLocation = editor.Caret.Location;
			} else {
				caretOffset = completionContext.Document.GetOffset(currentLocation);
			}
			
			var completionFactory = new CSharpCompletionDataFactory(completionContext, new CSharpResolver(completionContext.TypeResolveContextAtCaret));
			
			CSharpCompletionEngine cce = new CSharpCompletionEngine(
				completionContext.Document,
				completionContext.CompletionContextProvider,
				completionFactory,
				completionContext.ProjectContent,
				completionContext.TypeResolveContextAtCaret
			);
			var formattingOptions = CSharpFormattingPolicies.Instance.GetProjectOptions(completionContext.Compilation.GetProject());
			cce.FormattingPolicy = formattingOptions.OptionsContainer.GetEffectiveOptions();
			cce.EolMarker = DocumentUtilities.GetLineTerminator(completionContext.Document, currentLocation.Line);
			
			cce.IndentString = editor.Options.IndentationString;
			int startPos, triggerWordLength;
			IEnumerable<ICompletionData> completionData;
			if (ctrlSpace) {
				if (!cce.TryGetCompletionWord(caretOffset, out startPos, out triggerWordLength)) {
					startPos = caretOffset;
					triggerWordLength = 0;
				}
				completionData = cce.GetCompletionData(startPos, true);
				completionData = completionData.Concat(cce.GetImportCompletionData(startPos));
			} else {
				startPos = caretOffset;
				if (char.IsLetterOrDigit (completionChar) || completionChar == '_') {
					if (!CodeCompletionOptions.CompleteWhenTyping) return false;
					if (startPos > 1 && char.IsLetterOrDigit (completionContext.Document.GetCharAt (startPos - 2)))
						return false;
					completionData = cce.GetCompletionData(startPos, false);
					startPos--;
					triggerWordLength = 1;
				} else {
					completionData = cce.GetCompletionData(startPos, false);
					triggerWordLength = 0;
				}
			}
			
			DefaultCompletionItemList list = new DefaultCompletionItemList();
			list.Items.AddRange(FilterAndAddTemplates(editor, completionData.Cast<ICompletionItem>().ToList()));
			if (list.Items.Count > 0 && (ctrlSpace || cce.AutoCompleteEmptyMatch)) {
				list.SortItems();
				list.PreselectionLength = caretOffset - startPos;
				list.PostselectionLength = Math.Max(0, startPos + triggerWordLength - caretOffset);
				list.SuggestedItem = list.Items.FirstOrDefault(i => i.Text == cce.DefaultCompletionString);
				editor.ShowCompletionWindow(list);
				return true;
			}
			
			if (CodeCompletionOptions.InsightEnabled && !ctrlSpace) {
				// Method Insight
				var pce = new CSharpParameterCompletionEngine(
					completionContext.Document,
					completionContext.CompletionContextProvider,
					completionFactory,
					completionContext.ProjectContent,
					completionContext.TypeResolveContextAtCaret
				);
				var newInsight = pce.GetParameterDataProvider(caretOffset, completionChar) as CSharpMethodInsight;
				if (newInsight != null && newInsight.items.Count > 0) {
					newInsight.UpdateHighlightedParameter(pce);
					newInsight.Show();
					return true;
				}
			}
			return false;
		}
        public CodeCompletionResult GetCompletions(IDocument document, int offset, bool controlSpace, string usings, string variables = null)
        {
            var result = new CodeCompletionResult();

            if (String.IsNullOrEmpty(document.FileName))
                return result;

            var completionContext = new CSharpCompletionContext(document, offset, projectContent, usings, variables);

            var completionFactory = new CSharpCompletionDataFactory(completionContext.TypeResolveContextAtCaret, completionContext);
            var cce = new CSharpCompletionEngine(
                completionContext.Document,
                completionContext.CompletionContextProvider,
                completionFactory,
                completionContext.ProjectContent,
                completionContext.TypeResolveContextAtCaret
                );

            cce.EolMarker = Environment.NewLine;
            cce.FormattingPolicy = FormattingOptionsFactory.CreateSharpDevelop();

            var completionChar = completionContext.Document.GetCharAt(completionContext.Offset - 1);
            int startPos, triggerWordLength;
            IEnumerable<ICSharpCode.NRefactory.Completion.ICompletionData> completionData;
            if (controlSpace)
            {
                if (!cce.TryGetCompletionWord(completionContext.Offset, out startPos, out triggerWordLength))
                {
                    startPos = completionContext.Offset;
                    triggerWordLength = 0;
                }
                completionData = cce.GetCompletionData(startPos, true);
                //this outputs tons of available entities
                //if (triggerWordLength == 0)
                //    completionData = completionData.Concat(cce.GetImportCompletionData(startPos));
            }
            else
            {
                startPos = completionContext.Offset;

                if (char.IsLetterOrDigit(completionChar) || completionChar == '_')
                {
                    if (startPos > 1 && char.IsLetterOrDigit(completionContext.Document.GetCharAt(startPos - 2)))
                        return result;
                    completionData = cce.GetCompletionData(startPos, false);
                    startPos--;
                    triggerWordLength = 1;
                }
                else
                {
                    completionData = cce.GetCompletionData(startPos, false);
                    triggerWordLength = 0;
                }
            }

            result.TriggerWordLength = triggerWordLength;
            result.TriggerWord = completionContext.Document.GetText(completionContext.Offset - triggerWordLength, triggerWordLength);
            Debug.Print("Trigger word: '{0}'", result.TriggerWord);

            //cast to AvalonEdit completion data and add to results
            foreach (var completion in completionData)
            {
                var cshellCompletionData = completion as ICSharpCode.CodeCompletion.DataItems.CompletionData;
                if (cshellCompletionData != null)
                {
                    cshellCompletionData.TriggerWord = result.TriggerWord;
                    cshellCompletionData.TriggerWordLength = result.TriggerWordLength;

                    if (completion is ICSharpCode.CodeCompletion.DataItems.EntityCompletionData)
                    {
                        string typename = String.Empty;

                        var entity = cshellCompletionData as ICSharpCode.CodeCompletion.DataItems.EntityCompletionData;

                        if (entity.Entity is ICSharpCode.NRefactory.TypeSystem.Implementation.DefaultResolvedTypeDefinition)
                        {
                            var def = entity.Entity as ICSharpCode.NRefactory.TypeSystem.Implementation.DefaultResolvedTypeDefinition;

                            typename = def.FullTypeName.ReflectionName;
                        }
                        else
                        {
                            typename = entity.Entity.DeclaringType.FullName;
                        }

                        Type type = Type.GetType(typename);

                        if (!AllowedType(type))
                        {
                            continue;
                        }
                    }

                    result.CompletionData.Add(cshellCompletionData);

                    // piggyback 'region' preprocessor to add our own
                    if (cshellCompletionData.DisplayText == "region")
                    {
                        DataItems.CompletionData import = new DataItems.CompletionData("import");
                        import.CompletionCategory = cshellCompletionData.CompletionCategory;
                        import.Image = cshellCompletionData.Image;
                        result.CompletionData.Add(import);
                    }
                }
            }

            //method completions
            if (!controlSpace)
            {
                // Method Insight
                var pce = new CSharpParameterCompletionEngine(
                    completionContext.Document,
                    completionContext.CompletionContextProvider,
                    completionFactory,
                    completionContext.ProjectContent,
                    completionContext.TypeResolveContextAtCaret
                );

                var parameterDataProvider = pce.GetParameterDataProvider(completionContext.Offset, completionChar);
                result.OverloadProvider = parameterDataProvider as IOverloadProvider;
            }

            return result;
        }