/// <summary>
        /// Takes the Event Tree and Flattens it into a Queue as per the rules laid out in the RDF/XML Specification
        /// </summary>
        /// <param name="context">Parser Context</param>
        /// <param name="evt">Event which is the Root of the Tree (not necessarily a RootEvent)</param>
        /// <param name="nesting">A numeric value used for Parser Tracing to indicate nesting levels of the Event Tree</param>
        private void FlattenEventTree(RdfXmlParserContext context, IRdfXmlEvent evt, int nesting)
        {
            // Add to Queue
            context.Events.Enqueue(evt);

            if (context.TraceParsing)
            {
                Console.Write(nesting + " " + evt.GetType().ToString());
            }

            // Iterate over Children where present
            if (evt is RootEvent)
            {
                RootEvent root = (RootEvent)evt;
                if (context.TraceParsing)
                {
                    Console.WriteLine("");
                }
                foreach (IRdfXmlEvent childEvent in root.Children)
                {
                    FlattenEventTree(context, childEvent, nesting + 1);
                }

                // No End after a RootEvent
                return;
            }
            else if (evt is ElementEvent)
            {
                ElementEvent element = (ElementEvent)evt;
                if (context.TraceParsing)
                {
                    Console.WriteLine(" " + element.Namespace + ":" + element.LocalName);
                }
                if (element.Children.Count > 0)
                {
                    foreach (IRdfXmlEvent childEvent in element.Children)
                    {
                        FlattenEventTree(context, childEvent, nesting + 1);
                    }
                }
            }
            else if (evt is TextEvent)
            {
                TextEvent text = (TextEvent)evt;
                if (context.TraceParsing)
                {
                    Console.WriteLine(" " + text.Value);
                }

                // No additional End after a Text Event
                return;
            }
            else if (evt is TypedLiteralEvent)
            {
                TypedLiteralEvent tlit = (TypedLiteralEvent)evt;
                if (context.TraceParsing)
                {
                    Console.WriteLine();
                }

                // No additional End after a Text Event
                return;
            }

            // Add an End Element Event to the Queue
            EndElementEvent end = new EndElementEvent();

            context.Events.Enqueue(end);
            if (context.TraceParsing)
            {
                String endDescrip = String.Empty;
                if (evt is ElementEvent)
                {
                    ElementEvent temp = (ElementEvent)evt;
                    endDescrip = " " + temp.QName;
                }
                Console.WriteLine(nesting + " " + end.GetType().ToString() + endDescrip);
            }
        }
예제 #2
0
        /// <summary>
        /// Takes the Event Tree and Flattens it into a Queue as per the rules laid out in the RDF/XML Specification
        /// </summary>
        /// <param name="context">Parser Context</param>
        /// <param name="evt">Event which is the Root of the Tree (not necessarily a RootEvent)</param>
        /// <param name="nesting">A numeric value used for Parser Tracing to indicate nesting levels of the Event Tree</param>
        private void FlattenEventTree(RdfXmlParserContext context, IRdfXmlEvent evt, int nesting)
        {
            //Add to Queue
            context.Events.Enqueue(evt);

            if (context.TraceParsing)
            {
                Console.Write(nesting + " " + evt.GetType().ToString());
            }

            //Iterate over Children where present
            if (evt is RootEvent)
            {
                RootEvent root = (RootEvent)evt;
                if (context.TraceParsing)
                {
                    Console.WriteLine("");
                }
                foreach (IRdfXmlEvent childEvent in root.Children)
                {
                    this.FlattenEventTree(context, childEvent, nesting + 1);
                }

                //No End after a RootEvent
                return;
            }
            else if (evt is ElementEvent)
            {
                ElementEvent element = (ElementEvent)evt;
                if (context.TraceParsing)
                {
                    Console.WriteLine(" " + element.Namespace + ":" + element.LocalName);
                }
                if (element.Children.Count > 0)
                {
                    foreach (IRdfXmlEvent childEvent in element.Children)
                    {
                        this.FlattenEventTree(context, childEvent, nesting + 1);
                    }
                }
            }
            else if (evt is TextEvent)
            {
                TextEvent text = (TextEvent)evt;
                if (context.TraceParsing)
                {
                    Console.WriteLine(" " + text.Value);
                }

                //No additional End after a Text Event
                return;
            }
            else if (evt is TypedLiteralEvent)
            {
                TypedLiteralEvent tlit = (TypedLiteralEvent)evt;
                if (context.TraceParsing)
                {
                    Console.WriteLine();
                }

                //No additional End after a Text Event
                return;
            }

            //Add an End Element Event to the Queue
            EndElementEvent end = new EndElementEvent();
            context.Events.Enqueue(end);
            if (context.TraceParsing)
            {
                String endDescrip = String.Empty;
                if (evt is ElementEvent)
                {
                    ElementEvent temp = (ElementEvent)evt;
                    endDescrip = " " + temp.QName;
                }
                Console.WriteLine(nesting + " " + end.GetType().ToString() + endDescrip);
            }
        }