org.extex.unit.tex
Class TraceCommandObserver

java.lang.Object
  org.extex.unit.tex.TraceCommandObserver

All Implemented Interfaces:

CommandObserver

public class TraceCommandObserver
extends java.lang.Object
implements CommandObserver

Observer for tracing the execution of tokens. The token is written to the log file enclosed in braces.

Version:

$Revision:4431 $

Author:

Gerd Neugebauer

Constructor Summary

TraceCommandObserver(java.util.logging.Logger theLogger, Context context)
Creates a new object.

Method Summary

void	update(Token token) This method is meant to be invoked just before a token is executed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TraceCommandObserver

public TraceCommandObserver(java.util.logging.Logger theLogger,
                            Context context)

Creates a new object.

Parameters:

theLogger - the logger for potential output

context - the interpreter context for access to \tracingonline

Method Detail

update

public void update(Token token)

This method is meant to be invoked just before a token is executed. A token following a prefix code is ignored if \tracingcommands is not positive.

Specified by:

update in interface CommandObserver

Parameters:

token - the token to be expanded