source: trunk/yao/share/antlr-2.7.7/lib/csharp/antlr.runtime/antlr.debug/Tracer.cs @ 1

namespace antlr.debug
{
        using System;
        
        public class Tracer : TraceListenerBase, TraceListener
        {
                protected string indentString = "";
                // TBD: should be StringBuffer
                
                
                protected internal virtual void  dedent()
                {
                        if (indentString.Length < 2)
                                indentString = "";
                        else
                                indentString = indentString.Substring(2);
                }
                public override void  enterRule(object source, TraceEventArgs e)
                {
                        System.Console.Out.WriteLine(indentString + e);
                        indent();
                }
                public override void  exitRule(object source, TraceEventArgs e)
                {
                        dedent();
                        System.Console.Out.WriteLine(indentString + e);
                }
                protected internal virtual void  indent()
                {
                        indentString += "  ";
                }
        }
}