private static Babel.Parser.Parser ParseText(string text, bool trace = false) { Babel.Parser.ErrorHandler handler = new Babel.Parser.ErrorHandler(); Babel.Lexer.Scanner scanner = new Babel.Lexer.Scanner(); Babel.Parser.Parser parser = new Babel.Parser.Parser(); // use noarg constructor parser.Trace = trace; parser.scanner = scanner; scanner.Handler = handler; parser.SetHandler(handler); scanner.SetSourceText(text); var request = new ParseRequest(true); request.Sink = new AuthoringSink(ParseReason.None, 0, 0, Babel.Parser.Parser.MaxErrors); parser.MBWInit(request); var result = parser.Parse(); if (handler.Errors) { throw new Exception(handler.ToString()); } return(parser); }
/// <summary> /// Parses measures from the mdx script text. If there is an error during parsing an exception is thrown. /// </summary> /// <param name="daxScript">mdx script text</param> /// <returns>Enumerable dax measures</returns> public static MeasuresContainer ParseDaxScript(string daxScript) { var handler = new Babel.Parser.ErrorHandler(); var scanner = new Babel.Lexer.Scanner(); var parser = new Babel.Parser.Parser(); // use noarg constructor parser.scanner = scanner; scanner.Handler = handler; parser.SetHandler(handler); scanner.SetSourceText(daxScript); var request = new ParseRequest(true); request.Sink = new AuthoringSink(ParseReason.None, 0, 0, Babel.Parser.Parser.MaxErrors); parser.MBWInit(request); var parseResult = parser.Parse(); if (handler.Errors) { throw DaxParsingException.FromHandler(handler, daxScript); } //Add support measures if measure contains KPIs var measures = parser.AllMeasures; var supportMeasures = new List <DaxMeasure>(); var containsSupportMeasures = measures.GetSupportingMeasures().Count() != 0; if (!containsSupportMeasures) { foreach (var measure in measures) { if (measure.CalcProperty?.KPI == null) { continue; } if (!string.IsNullOrWhiteSpace(measure.CalcProperty.KPI.TargetExpression)) { var newMeasure = new DaxMeasure( "_" + measure.Name + " Goal", measure.TableName, measure.CalcProperty.KPI.TargetExpression ); supportMeasures.Add(newMeasure); } if (!string.IsNullOrWhiteSpace(measure.CalcProperty.KPI.StatusExpression)) { var newMeasure = new DaxMeasure( "_" + measure.Name + " Status", measure.TableName, measure.CalcProperty.KPI.StatusExpression ); supportMeasures.Add(newMeasure); } if (!string.IsNullOrWhiteSpace(measure.CalcProperty.KPI.TrendExpression)) { var newMeasure = new DaxMeasure( "_" + measure.Name + " Trend", measure.TableName, measure.CalcProperty.KPI.TrendExpression ); supportMeasures.Add(newMeasure); } } } return(new MeasuresContainer(measures.Union(supportMeasures).ToList())); }
/// <summary> /// Main function of the parsing thread. /// This function waits on the queue of the parsing requests and build the parsing tree for /// a specific file. The resulting tree is built using LibraryNode objects so that it can /// be used inside the class view or object browser. /// </summary> private void ParseThread() { const int waitTimeout = 500; // Define the array of events this function is interest in. WaitHandle[] eventsToWait = new WaitHandle[] { requestPresent, shutDownStarted }; // Execute the tasks. while (true) { // Wait for a task or a shutdown request. int waitResult = WaitHandle.WaitAny(eventsToWait, waitTimeout, false); if (1 == waitResult) { // The shutdown of this component is started, so exit the thread. return; } LibraryTask task = null; lock (requests) { if (0 != requests.Count) { task = requests.Dequeue(); } if (0 == requests.Count) { requestPresent.Reset(); } } if (task == null) { continue; } if (task.Text == null) { if (System.IO.File.Exists(task.FileName)) { var parser = new Babel.Parser.Parser(); handler.Clear(); using (var stream = File.OpenRead(task.FileName)) { Babel.Lexer.Scanner scanner = new Babel.Lexer.Scanner(stream); handler.SetFileName(task.FileName); scanner.Handler = handler; Debug.Assert(symbolTable != null); parser.SetParsingInfo(task.FileName, symbolTable, handler); parser.scanner = scanner; //parser.MBWInit(req); var retval = parser.Parse(); // the parse result is to fill the symbol table } } } else { var parser = new Babel.Parser.Parser(); handler.Clear(); Babel.Lexer.Scanner scanner = new Babel.Lexer.Scanner(); // string interface handler.SetFileName(task.FileName); scanner.Handler = handler; Debug.Assert(symbolTable != null); parser.SetParsingInfo(task.Text, symbolTable, handler); parser.scanner = scanner; scanner.SetSource(task.Text, 0); //parser.MBWInit(req); parser.Parse(); } //LibraryNode module = new LibraryNode( // System.IO.Path.GetFileName(task.FileName), // LibraryNode.LibraryNodeType.PhysicalContainer); //CreateModuleTree(module, module, scope, "", task.ModuleID); //if (null != task.ModuleID) //{ // LibraryNode previousItem = null; // lock (files) // { // if (files.TryGetValue(task.ModuleID, out previousItem)) // { // files.Remove(task.ModuleID); // } // } // library.RemoveNode(previousItem); //} //library.AddNode(module); //if (null != task.ModuleID) //{ // lock (files) // { // files.Add(task.ModuleID, module); // } //} } }