66         protected object singleElement;  field in Antlr.Runtime.Tree.RewriteRuleElementStream
102             this.singleElement = null;  in RewriteRuleElementStream()
131             if ( singleElement == null )  in Add()
133                 singleElement = el;  in Add()
138             elements.Add( singleElement );  in Add()
139             singleElement = null;  in Add()
183                     return ToTree( singleElement );  in NextCore()
189             if ( singleElement != null )  in NextCore()
192                 return ToTree( singleElement );  in NextCore()
223                 return ( singleElement != null && cursor < 1 ) ||
233                 if ( singleElement != null )