C# Resolver.NewCSharpExpressionFinder类代码示例

		CompletionDataList CreateCtrlSpaceCompletionData (CodeCompletionContext ctx, ExpressionResult expressionResult)
		{
			NRefactoryResolver resolver = CreateResolver ();
			DomLocation cursorLocation = new DomLocation (ctx.TriggerLine, ctx.TriggerLineOffset);
			resolver.SetupResolver (cursorLocation);
			CompletionDataList result = new ProjectDomCompletionDataList ();
			CompletionDataCollector col = new CompletionDataCollector (dom, result, Document.CompilationUnit, resolver.CallingType, cursorLocation);
			
			if (expressionResult == null) {
				AddPrimitiveTypes (col);
				resolver.AddAccessibleCodeCompletionData (ExpressionContext.Global, col);
			} else if (expressionResult.ExpressionContext == ExpressionContext.TypeDeclaration) {
				AddPrimitiveTypes (col);
				AddNRefactoryKeywords (col, ICSharpCode.NRefactory.Parser.CSharp.Tokens.TypeLevel);
				resolver.AddAccessibleCodeCompletionData (expressionResult.ExpressionContext, col);
			} else if (expressionResult.ExpressionContext == ExpressionContext.InterfaceDeclaration) {
				AddPrimitiveTypes (col);
				AddNRefactoryKeywords (col, ICSharpCode.NRefactory.Parser.CSharp.Tokens.InterfaceLevel);
				resolver.AddAccessibleCodeCompletionData (expressionResult.ExpressionContext, col);
			} else if (expressionResult.ExpressionContext == ExpressionContext.MethodBody) {
				col.Add ("global", "md-keyword");
				col.Add ("var", "md-keyword");
				AddNRefactoryKeywords (col, ICSharpCode.NRefactory.Parser.CSharp.Tokens.StatementStart);
				AddPrimitiveTypes (col);
				resolver.AddAccessibleCodeCompletionData (expressionResult.ExpressionContext, col);
			} else if (expressionResult.ExpressionContext == ExpressionContext.InterfacePropertyDeclaration) {
				col.Add ("get", "md-keyword");
				col.Add ("set", "md-keyword");
			} else if (expressionResult.ExpressionContext == ExpressionContext.ConstraintsStart) {
				col.Add ("where", "md-keyword");
			} else if (expressionResult.ExpressionContext == ExpressionContext.Constraints) {
				col.Add ("new", "md-keyword");
				col.Add ("class", "md-keyword");
				col.Add ("struct", "md-keyword");
				AddPrimitiveTypes (col);
				resolver.AddAccessibleCodeCompletionData (expressionResult.ExpressionContext, col);
			} else if (expressionResult.ExpressionContext == ExpressionContext.Attribute) {
				col.Add ("assembly", "md-keyword");
				col.Add ("module", "md-keyword");
				col.Add ("type", "md-keyword");
				col.Add ("method", "md-keyword");
				col.Add ("field", "md-keyword");
				col.Add ("property", "md-keyword");
				col.Add ("event", "md-keyword");
				col.Add ("param", "md-keyword");
				col.Add ("return", "md-keyword");
				resolver.AddAccessibleCodeCompletionData (expressionResult.ExpressionContext, col);
			} else if (expressionResult.ExpressionContext == ExpressionContext.BaseConstructorCall) {
				col.Add ("this", "md-keyword");
				col.Add ("base", "md-keyword");
			} else if (expressionResult.ExpressionContext == ExpressionContext.ParameterType || expressionResult.ExpressionContext == ExpressionContext.FirstParameterType) {
				col.Add ("ref", "md-keyword");
				col.Add ("out", "md-keyword");
				col.Add ("params", "md-keyword");
				// C# 3.0 extension method
				if (expressionResult.ExpressionContext == ExpressionContext.FirstParameterType)
					col.Add ("this", "md-keyword");
				AddPrimitiveTypes (col);
				resolver.AddAccessibleCodeCompletionData (expressionResult.ExpressionContext, col);
			} else if (expressionResult.ExpressionContext == ExpressionContext.PropertyDeclaration) {
				AddNRefactoryKeywords (col, ICSharpCode.NRefactory.Parser.CSharp.Tokens.InPropertyDeclaration);
			} else if (expressionResult.ExpressionContext == ExpressionContext.EventDeclaration) {
				col.Add ("add", "md-keyword");
				col.Add ("remove", "md-keyword");
			} //else if (expressionResult.ExpressionContext == ExpressionContext.FullyQualifiedType) {} 
			else if (expressionResult.ExpressionContext == ExpressionContext.Default) {
				col.Add ("global", "md-keyword");
				col.Add ("var", "md-keyword");
				AddPrimitiveTypes (col);
				AddNRefactoryKeywords (col, ICSharpCode.NRefactory.Parser.CSharp.Tokens.ExpressionStart);
				AddNRefactoryKeywords (col, ICSharpCode.NRefactory.Parser.CSharp.Tokens.ExpressionContent);
				resolver.AddAccessibleCodeCompletionData (expressionResult.ExpressionContext, col);
			} else if (expressionResult.ExpressionContext == ExpressionContext.Global) {
				AddNRefactoryKeywords (col, ICSharpCode.NRefactory.Parser.CSharp.Tokens.GlobalLevel);
				CodeTemplateService.AddCompletionDataForMime ("text/x-csharp", result);
			} else if (expressionResult.ExpressionContext == ExpressionContext.ObjectInitializer) {
				ExpressionContext exactContext = new NewCSharpExpressionFinder (dom).FindExactContextForObjectInitializer (textEditorData, resolver.Unit, Document.FileName, resolver.CallingType);
				if (exactContext is ExpressionContext.TypeExpressionContext) {
					IReturnType objectInitializer = ((ExpressionContext.TypeExpressionContext)exactContext).UnresolvedType;
					if (objectInitializer.ArrayDimensions > 0 || objectInitializer.PointerNestingLevel > 0) {
						col.Add ("global", "md-keyword");
						col.Add ("new", "md-keyword");
						AddPrimitiveTypes (col);
						resolver.AddAccessibleCodeCompletionData (expressionResult.ExpressionContext, col);
						return result;
					}
						
					IType foundType = resolver.SearchType (objectInitializer);
					if (foundType == null)
						foundType = dom.GetType (objectInitializer);
					
					if (foundType != null) {
						bool includeProtected = DomType.IncludeProtected (dom, foundType, resolver.CallingType);
						foreach (IType type in dom.GetInheritanceTree (foundType)) {
							foreach (IProperty property in type.Properties) {
								if (property.IsAccessibleFrom (dom, resolver.CallingType, resolver.CallingMember, includeProtected)) {
									col.Add (property);
								}
							}
							foreach (var field in type.Fields) {
//.........这里部分代码省略.........

		public ICompletionDataList HandleKeywordCompletion (CodeCompletionContext completionContext, ExpressionResult result, int wordStart, string word)
		{
			if (stateTracker.Engine.IsInsideDocLineComment || stateTracker.Engine.IsInsideOrdinaryCommentOrString)
				return null;
			DomLocation location = new DomLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset);
			switch (word) {
			case "using":
				if (result.ExpressionContext != ExpressionContext.NamespaceNameExcepted)
					return null;
				return CreateCompletionData (location, new NamespaceResolveResult (""), result, null);
			case "namespace":
				result.ExpressionContext = ExpressionContext.NamespaceNameExcepted;
				return CreateCompletionData (location, new NamespaceResolveResult (""), result, null);
			case "case":
				return CreateCaseCompletionData (location, result);
			case ",":
			case ":":
				if (result.ExpressionContext == ExpressionContext.InheritableType) {
					IType cls = NRefactoryResolver.GetTypeAtCursor (Document.CompilationUnit, Document.FileName, new DomLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));
					CompletionDataList completionList = new ProjectDomCompletionDataList ();
					List<string> namespaceList = GetUsedNamespaces ();
					CSharpTextEditorCompletion.CompletionDataCollector col = new CSharpTextEditorCompletion.CompletionDataCollector (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 = completionContext.TriggerOffset;

										// 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, Document.CompilationUnit, 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":
				
				{
					CompletionDataList completionList = new ProjectDomCompletionDataList ();
					ExpressionResult expressionResult = FindExpression (dom, completionContext, wordStart - textEditorData.Caret.Offset);
					NRefactoryResolver resolver = CreateResolver ();
					ResolveResult resolveResult = resolver.Resolve (expressionResult, new DomLocation (completionContext.TriggerLine, completionContext.TriggerLineOffset));
					if (resolveResult != null && resolveResult.ResolvedType != null) {
						CompletionDataCollector col = new CompletionDataCollector (dom, completionList, Document.CompilationUnit, resolver.CallingType, location);
						IType foundType = null;
						if (word == "as") {
							ExpressionContext exactContext = new NewCSharpExpressionFinder (dom).FindExactContextForAsCompletion (textEditorData, 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);
						
//.........这里部分代码省略.........

//.........这里部分代码省略.........
					textEditorData.Insert (cursor, generatedComment.ToString ());
					textEditorData.Caret.Offset = cursor + newCursorOffset;
					return null;
				}
				return null;
//			case '\n':
//			case '\r': {
//				if (stateTracker.Engine.IsInsideDocLineComment || stateTracker.Engine.IsInsideOrdinaryCommentOrString)
//					return null;
//				result = FindExpression (dom, completionContext);
//				if (result == null)
//					return null;
//					
//					
//				int tokenIndex = completionContext.TriggerOffset;
//				string token = GetPreviousToken (ref tokenIndex, false);
//				if (result.ExpressionContext == ExpressionContext.ObjectInitializer) {
//					if (token == "{" || token == ",")
//						return CreateCtrlSpaceCompletionData (completionContext, result); 
//				} 
//				return null;
//				}
			case ' ':
				if (stateTracker.Engine.IsInsideDocLineComment || stateTracker.Engine.IsInsideOrdinaryCommentOrString)
					return null;
				result = FindExpression (dom, completionContext);
				if (result == null)
					return null;
					
				int tokenIndex = completionContext.TriggerOffset;
				string token = GetPreviousToken (ref tokenIndex, false);
				if (result.ExpressionContext == ExpressionContext.ObjectInitializer) {
					resolver = CreateResolver ();
					ExpressionContext exactContext = new NewCSharpExpressionFinder (dom).FindExactContextForObjectInitializer (textEditorData, 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 "==":
					result = FindExpression (dom, completionContext, tokenIndex - completionContext.TriggerOffset - 1);
					resolver = CreateResolver ();
					resolveResult = resolver.Resolve (result, location);
					if (resolveResult != null) {
						IType resolvedType = dom.GetType (resolveResult.ResolvedType);
						if (resolvedType == null) 
							return null;
						if (resolvedType.ClassType == ClassType.Enum) {
							CompletionDataList completionList = new ProjectDomCompletionDataList ();
							CompletionDataCollector cdc = new CompletionDataCollector (dom, completionList, Document.CompilationUnit, resolver.CallingType, location);
							IReturnType returnType = new DomReturnType (resolvedType);
							bool added = false;
							foreach (IUsing u in Document.CompilationUnit.Usings) {
								foreach (KeyValuePair<string, IReturnType> alias in u.Aliases) {
									if (alias.Value.ToInvariantString () == returnType.ToInvariantString ()) {
										cdc.Add (alias.Key, "md-class");
										added = true;

		ExpressionResult FindExpression (ProjectDom dom, CodeCompletionContext ctx)
		{
			NewCSharpExpressionFinder expressionFinder = new NewCSharpExpressionFinder (dom);
			try {
				return expressionFinder.FindExpression (textEditorData, ctx.TriggerOffset);
			} catch (Exception ex) {
				LoggingService.LogWarning (ex.Message, ex);
				return null;
			}
		}

		ExpressionResult FindExpression (ProjectDom dom, CodeCompletionContext ctx, int offset)
		{
			NewCSharpExpressionFinder expressionFinder = new NewCSharpExpressionFinder (dom);
			try {
				return expressionFinder.FindExpression (Editor.Text, Math.Max (ctx.TriggerOffset + offset, 0));
			} catch (Exception ex) {
				LoggingService.LogWarning (ex.Message, ex);
				return null;
			}
		}

		public MonoDevelop.Projects.Dom.ResolveResult GetLanguageItem (ProjectDom dom, Mono.TextEditor.TextEditorData data, int offset)
		{
			if (offset < 0)
				return null;
			string fileName = data.Document.FileName;
			IParser parser = ProjectDomService.GetParser (fileName);
			if (parser == null)
				return null;
			
			MonoDevelop.Ide.Gui.Document doc = IdeApp.Workbench.ActiveDocument;
			if (doc == null)
				return null;
			
			IResolver         resolver = parser.CreateResolver (dom, doc, fileName);
			if (resolver == null) 
				return null;
			var expressionFinder = new NewCSharpExpressionFinder (dom);
			
			int wordEnd = Math.Min (offset, data.Length - 1);
			if (data.GetCharAt (wordEnd) == '@')
				wordEnd++;
			while (wordEnd < data.Length && (Char.IsLetterOrDigit (data.GetCharAt (wordEnd)) || data.GetCharAt (wordEnd) == '_'))
				wordEnd++;
			
			while (wordEnd < data.Length - 1 && Char.IsWhiteSpace (data.GetCharAt (wordEnd)))
				wordEnd++;
			/* is checked at the end.
			int saveEnd = wordEnd;
			if (wordEnd < data.Length && data.GetCharAt (wordEnd) == '<') {
				int matchingBracket = data.Document.GetMatchingBracketOffset (wordEnd);
				if (matchingBracket > 0)
					wordEnd = matchingBracket;
				while (wordEnd < data.Length - 1 && Char.IsWhiteSpace (data.GetCharAt (wordEnd)))
					wordEnd++;
			}
			
			bool wasMethodCall = false;
			if (data.GetCharAt (wordEnd) == '(') {
				int matchingBracket = data.Document.GetMatchingBracketOffset (wordEnd);
				if (matchingBracket > 0) {
					wordEnd = matchingBracket;
					wasMethodCall = true;
				}
			}
			if (!wasMethodCall)
				wordEnd = saveEnd;*/

			ExpressionResult expressionResult = expressionFinder.FindExpression (data, wordEnd);
			if (expressionResult == null)
				return null;
			
			ResolveResult resolveResult;
			DocumentLocation loc = data.Document.OffsetToLocation (offset);
			string savedExpression = null;
			
			// special handling for 'var' "keyword"
			if (expressionResult.ExpressionContext == ExpressionContext.IdentifierExpected && expressionResult.Expression != null && expressionResult.Expression.Trim () == "var") {
				int endOffset = data.Document.LocationToOffset (expressionResult.Region.End.Line, expressionResult.Region.End.Column);
				StringBuilder identifer = new StringBuilder ();
				for (int i = endOffset; i >= 0 && i < data.Document.Length; i++) {
					char ch = data.Document.GetCharAt (i);
					if (Char.IsWhiteSpace (ch))
						continue;
					if (ch == '=')
						break;
					if (Char.IsLetterOrDigit (ch) || ch =='_') {
						identifer.Append (ch);
						continue;
					}
					identifer.Length = 0;
					break;
				}
				if (identifer.Length > 0) {
					expressionResult.Expression = identifer.ToString ();
					resolveResult = resolver.Resolve (expressionResult, new DomLocation (loc.Line, loc.Column));
					if (resolveResult != null) {
						resolveResult = new MemberResolveResult (dom.GetType (resolveResult.ResolvedType));
						resolveResult.ResolvedExpression = expressionResult;
						return resolveResult;
					}
				}
			}
			if (expressionResult.ExpressionContext == ExpressionContext.Attribute) {
				savedExpression = expressionResult.Expression;
				expressionResult.Expression = expressionResult.Expression.Trim () + "Attribute";
				expressionResult.ExpressionContext = ExpressionContext.ObjectCreation;
			} 
			resolveResult = resolver.Resolve (expressionResult, new DomLocation (loc.Line, loc.Column));
			if (savedExpression != null && resolveResult == null) {
				expressionResult.Expression = savedExpression;
				resolveResult = resolver.Resolve (expressionResult, new DomLocation (loc.Line, loc.Column));
			}
			// Search for possible generic parameters.
//			if (this.resolveResult == null || this.resolveResult.ResolvedType == null || String.IsNullOrEmpty (this.resolveResult.ResolvedType.Name)) {
			if (!expressionResult.Region.IsEmpty) {
				int j = data.Document.LocationToOffset (expressionResult.Region.End.Line, expressionResult.Region.End.Column);
				int bracket = 0;
				for (int i = j; i >= 0 && i < data.Document.Length; i++) {
					char ch = data.Document.GetCharAt (i);
					if (Char.IsWhiteSpace (ch))
//.........这里部分代码省略.........

		internal static RefactoringOptions CreateRefactoringOptions (string text)
		{
			int cursorPosition = -1;
			int endPos = text.IndexOf ('$');
			if (endPos >= 0) {
				cursorPosition = endPos;
				text = text.Substring (0, cursorPosition) + text.Substring (cursorPosition + 1);
			}
			
			int selectionStart = -1;
			int selectionEnd   = -1;
			int idx = text.IndexOf ("<-");
			if (idx >= 0) {
				selectionStart = idx;
				text = text.Substring (0, idx) + text.Substring (idx + 2);
				selectionEnd = idx = text.IndexOf ("->");
				
				text = text.Substring (0, idx) + text.Substring (idx + 2);
				if (cursorPosition < 0)
					cursorPosition = selectionEnd - 1;
			}
			
			TestWorkbenchWindow tww = new TestWorkbenchWindow ();
			TestViewContent sev = new TestViewContent ();
	//		return new RefactoringOptions ();
			
			DotNetProject project = new DotNetAssemblyProject ("C#");
			Solution solution = new Solution ();
			solution.RootFolder.Items.Add (project);
			project.FileName = GetTempFile (".csproj");
			string file = GetTempFile (".cs");
			project.AddFile (file);
			string parsedText = text;
			string editorText = text;
			ProjectDomService.Load (project);
			ProjectDom dom = ProjectDomService.GetProjectDom (project);
			dom.ForceUpdate (true);
			ProjectDomService.Parse (project, file, delegate { return parsedText; });
			ProjectDomService.Parse (project, file, delegate { return parsedText; });
			
			sev.Project = project;
			sev.ContentName = file;
			sev.Text = editorText;
			sev.CursorPosition = cursorPosition;
			
			tww.ViewContent = sev;
			var doc = new MonoDevelop.Ide.Gui.Document (tww);
			doc.Editor.Document.MimeType = "text/x-csharp";
			doc.Editor.Document.FileName = file;
			doc.ParsedDocument = new McsParser ().Parse (null, sev.ContentName, parsedText);
			foreach (var e in doc.ParsedDocument.Errors)
				Console.WriteLine (e);
			if (cursorPosition >= 0)
				doc.Editor.Caret.Offset = cursorPosition;
			if (selectionStart >= 0) 
				doc.Editor.SetSelection (selectionStart, selectionEnd);
			
			NRefactoryResolver resolver = new NRefactoryResolver (dom, 
			                                                      doc.ParsedDocument.CompilationUnit, 
			                                                      sev.Data, 
			                                                      file);
			
			ExpressionResult expressionResult;
			if (selectionStart >= 0) {
				expressionResult = new ExpressionResult (editorText.Substring (selectionStart, selectionEnd - selectionStart).Trim ());
				endPos = selectionEnd;
			} else {
				expressionResult = new NewCSharpExpressionFinder (dom).FindFullExpression (doc.Editor, cursorPosition + 1);
			}
			ResolveResult resolveResult = endPos >= 0 ? resolver.Resolve (expressionResult, new DomLocation (doc.Editor.Caret.Line, doc.Editor.Caret.Column)) : null;
			
			RefactoringOptions result = new RefactoringOptions {
				Document = doc,
				Dom = dom,
				ResolveResult = resolveResult,
				SelectedItem = null
			};
			if (resolveResult is MemberResolveResult)
				result.SelectedItem = ((MemberResolveResult)resolveResult).ResolvedMember;
			if (resolveResult is LocalVariableResolveResult)
				result.SelectedItem = ((LocalVariableResolveResult)resolveResult).LocalVariable;
			if (resolveResult is ParameterResolveResult)
				result.SelectedItem = ((ParameterResolveResult)resolveResult).Parameter;
			result.TestFileProvider = new FileProvider (result);
			return result;
		}