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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 += " ";
}
}
}
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