C# RefactoringOptions.ParseDocument方法代码示例

		public override bool IsValid (RefactoringOptions options)
		{
//			if (options.SelectedItem != null)
//				return false;
			var buffer = options.Document.Editor;
			if (buffer.IsSomethingSelected) {
				ParsedDocument doc = options.ParseDocument ();
				if (doc != null && doc.CompilationUnit != null) {
					if (doc.CompilationUnit.GetMemberAt (buffer.Caret.Line, buffer.Caret.Column) == null)
						return false;
					return true;
				}
			}
			return false;
		}

		public override bool IsValid (RefactoringOptions options)
		{
//			if (options.SelectedItem != null)
//				return false;
			var buffer = options.Document.TextEditor;
			if (buffer.SelectionStartPosition - buffer.SelectionEndPosition != 0) {
				ParsedDocument doc = options.ParseDocument ();
				if (doc != null && doc.CompilationUnit != null) {
					int line, column;
					buffer.GetLineColumnFromPosition (buffer.CursorPosition, out line, out column);
					if (doc.CompilationUnit.GetMemberAt (line, column) == null)
						return false;
					return true;
				}
			}
			return false;
		}

		public override List<Change> PerformChanges (RefactoringOptions options, object properties)
		{
			List<Change> result = new List<Change> ();
			ICompilationUnit compilationUnit = options.ParseDocument ().CompilationUnit;
			Mono.TextEditor.TextEditorData textEditorData = options.GetTextEditorData ();
			int minOffset = int.MaxValue;
			foreach (IUsing u in compilationUnit.Usings) {
				if (u.IsFromNamespace)
					continue;
				int offset = textEditorData.Document.LocationToOffset (u.Region.Start.Line, u.Region.Start.Column);
				TextReplaceChange change = new TextReplaceChange () {
					FileName = options.Document.FileName,
					Offset = offset,
					RemovedChars = textEditorData.Document.LocationToOffset (u.Region.End.Line, u.Region.End.Column) - offset
				};
				Mono.TextEditor.LineSegment line = textEditorData.Document.GetLineByOffset (change.Offset);
				if (line != null && line.EditableLength == change.RemovedChars)
					change.RemovedChars += line.DelimiterLength;
				result.Add (change);
				minOffset = Math.Min (minOffset, offset);
			}
			StringBuilder output = new StringBuilder ();
			List<IUsing> usings = new List<IUsing> (compilationUnit.Usings);
			usings.Sort (UsingComparer);
			INRefactoryASTProvider astProvider = options.GetASTProvider ();
			foreach (IUsing u in usings) {
				AstNode declaration;
				if (u.IsFromNamespace)
					continue;
				if (u.Aliases.Any ()) {
					KeyValuePair<string, IReturnType> alias = u.Aliases.First ();
					declaration = new UsingAliasDeclaration (alias.Key, alias.Value.ConvertToTypeReference ());
				} else {
					declaration = new UsingDeclaration (u.Namespaces.First ());
				}
				output.Append (astProvider.OutputNode (options.Dom, declaration));
			}
			TextReplaceChange insertSortedUsings = new TextReplaceChange () {
				FileName = options.Document.FileName,
				Offset = minOffset,
				InsertedText = output.ToString ()
			};
			result.Add (insertSortedUsings);
			return result;
		}

		public override List<Change> PerformChanges (RefactoringOptions options, object properties)
		{
			List<Change> result = new List<Change> ();
			ICSharpCode.NRefactory.Ast.CompilationUnit unit = options.GetASTProvider ().ParseFile (options.Document.Editor.Text);
			FindTypeReferencesVisitor visitor = new FindTypeReferencesVisitor (options.GetTextEditorData (), options.GetResolver ());
			visitor.VisitCompilationUnit (unit, null);

			ProjectDom dom = options.Dom;
			
			ICompilationUnit compilationUnit = options.ParseDocument ().CompilationUnit;
			HashSet<string> usedUsings = new HashSet<string> ();
			foreach (TypeReference r in visitor.PossibleTypeReferences) {
				if (r.IsKeyword)
					continue;
				IType type = dom.SearchType (compilationUnit, compilationUnit, r.ConvertToReturnType ());
				if (type != null) {
					usedUsings.Add (type.Namespace);
				}
			}
			
			Mono.TextEditor.TextEditorData textEditorData = options.GetTextEditorData ();
			HashSet<string> currentUsings = new HashSet<string> ();
			foreach (IUsing u in compilationUnit.Usings) {
				if (u.IsFromNamespace)
					continue;
				if (!u.Aliases.Any () && u.Namespaces.All (name => currentUsings.Contains (name) || !usedUsings.Contains (name)) ) {
					TextReplaceChange change = new TextReplaceChange ();
					change.FileName = options.Document.FileName;
					change.Offset = textEditorData.Document.LocationToOffset (u.Region.Start.Line, u.Region.Start.Column);
					change.RemovedChars = textEditorData.Document.LocationToOffset (u.Region.End.Line, u.Region.End.Column) - change.Offset;
					Mono.TextEditor.LineSegment line = textEditorData.Document.GetLineByOffset (change.Offset);
					if (line != null && line.EditableLength == change.RemovedChars)
						change.RemovedChars += line.DelimiterLength;
					result.Add (change);
				}
				foreach (string nspace in u.Namespaces)
					currentUsings.Add (nspace);
			}
			
			return result;
		}

		public ExtractMethodParameters CreateParameters (RefactoringOptions options)
		{
			var buffer = options.Document.Editor;
			
			if (!buffer.IsSomethingSelected)
				return null;

			ParsedDocument doc = options.ParseDocument ();
			if (doc == null || doc.CompilationUnit == null)
				return null;

			IMember member = doc.CompilationUnit.GetMemberAt (buffer.Caret.Line, buffer.Caret.Column);
			if (member == null)
				return null;
			
			ExtractMethodParameters param = new ExtractMethodParameters () {
				DeclaringMember = member,
				Location = new DomLocation (buffer.Caret.Line, buffer.Caret.Column)
			};
			Analyze (options, param, true);
			return param;
		}

		public ExtractMethodParameters CreateParameters (RefactoringOptions options)
		{
			var buffer = options.Document.TextEditor;
			
			if (buffer.SelectionStartPosition - buffer.SelectionEndPosition == 0)
				return null;

			ParsedDocument doc = options.ParseDocument ();
			if (doc == null || doc.CompilationUnit == null)
				return null;

			int line, column;
			buffer.GetLineColumnFromPosition (buffer.CursorPosition, out line, out column);
			IMember member = doc.CompilationUnit.GetMemberAt (line, column);
			if (member == null)
				return null;
			
			ExtractMethodParameters param = new ExtractMethodParameters () {
				DeclaringMember = member,
				Location = new DomLocation (line, column)
			};
			Analyze (options, param, true);
			return param;
		}