Break.java
package org.opentrafficsim.road.gtu.lane;
import org.djutils.exceptions.Try;
import org.opentrafficsim.core.gtu.GTU;
import org.opentrafficsim.core.gtu.perception.Perception;
/**
* Utility to make debugging on a specific GTU more convenient. There is a method {@code on()} for a GTU and for perception.
* Should neither be available within the context of a method that needs to be debugged, {@code onSub()} can be used in
* combination with {@code onSuper()} at a higher-level method with a GTU or perception. <i>This class requires the user to set
* a break point in the method {@code trigger()}.</i>
* <p>
* Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
* BSD-style license. See <a href="http://opentrafficsim.org/node/13">OpenTrafficSim License</a>.
* <p>
* @version $Revision$, $LastChangedDate$, by $Author$, initial version 10 apr. 2017 <br>
* @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
* @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
* @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
*/
public final class Break
{
/** Condition to allow or prevent breaking in lower-level functionality. */
private static boolean superCondition = true;
/**
* Constructor.
*/
private Break()
{
//
}
/**
* Sets a break condition to true which is triggered by {@code onSub()} at a lower level where context is insufficient to
* determine the break condition.
* @param perception Perception<?>; perception to obtain gtu from
* @param id String; GTU id to break on
* @param time double; time to break at (or after)
* @param additionalCondition boolean; additional condition
*/
public static void onSuper(final Perception<?> perception, final String id, final double time,
final boolean additionalCondition)
{
Try.execute(() -> onSuper(perception.getGtu(), id, time, additionalCondition),
"Trying to break on gtu, but gtu could not be obtained from perception.");
}
/**
* Sets a break condition to true which is triggered by {@code onSub()} at a lower level where context is insufficient to
* determine the break condition.
* @param gtu GTU; GTU
* @param id String; GTU id to break on
* @param time double; time to break at (or after)
* @param additionalCondition boolean; additional condition
*/
public static void onSuper(final GTU gtu, final String id, final double time, final boolean additionalCondition)
{
superCondition = gtu.getId().equals(id) && gtu.getSimulator().getSimulatorTime().si >= time && additionalCondition;
}
/**
* This method can be used if the context of a lower-level function does not contain the information on which to break. This
* method will only trigger a break if at a higher-level function where the context was sufficient, the break condition was
* set to true using {@code onSuper()}.
*/
public static void onSub()
{
if (superCondition)
{
trigger();
}
}
/**
* This method can be used if the context of a lower-level function does not contain the information on which to break. This
* method will only trigger a break if at a higher-level function where the context was sufficient, the break condition was
* set to true using {@code onSuper()}.
* @param additionalCondition boolean; additional condition
*/
public static void onSub(final boolean additionalCondition)
{
if (superCondition && additionalCondition)
{
trigger();
}
}
/**
* @param perception Perception<?>; perception to obtain gtu from
* @param id String; GTU id to break on
* @param time String; time to break at (or after), in format ss, mm:ss or hh:mm:ss
* @param additionalCondition boolean; additional condition
*/
public static void on(final Perception<?> perception, final String id, final String time, final boolean additionalCondition)
{
on(perception, id, timeFromString(time), additionalCondition);
}
/**
* Returns a double representation of a String time.
* @param time String; string format, ss, mm:ss or hh:mm:ss
* @return double representation of a String time
*/
private static double timeFromString(final String time)
{
int index = time.indexOf(":");
if (index < 0)
{
return Double.valueOf(time) - 1e-6;
}
int index2 = time.indexOf(":", index + 1);
double h;
double m;
double s;
if (index2 < 0)
{
h = 0;
m = Double.valueOf(time.substring(0, index));
s = Double.valueOf(time.substring(index + 1));
}
else
{
h = Double.valueOf(time.substring(0, index));
m = Double.valueOf(time.substring(index + 1, index2));
s = Double.valueOf(time.substring(index2 + 1));
}
return h * 3600.0 + m * 60.0 + s - 1e-6;
}
/**
* @param perception Perception<?>; perception to obtain gtu from
* @param id String; GTU id to break on
* @param time double; time to break at (or after)
* @param additionalCondition boolean; additional condition
*/
public static void on(final Perception<?> perception, final String id, final double time, final boolean additionalCondition)
{
Try.execute(() -> on(perception.getGtu(), id, time, additionalCondition),
"Trying to break on gtu, but gtu could not be obtained from perception.");
}
/**
* @param gtu GTU; GTU
* @param id String; GTU id to break on
* @param time String; time to break at (or after), in format ss, mm:ss or hh:mm:ss
* @param additionalCondition boolean; additional condition
*/
public static void on(final GTU gtu, final String id, final String time, final boolean additionalCondition)
{
on(gtu, id, timeFromString(time), additionalCondition);
}
/**
* @param gtu GTU; GTU
* @param id String; GTU id to break on
* @param time double; time to break at (or after)
* @param additionalCondition boolean; additional condition
*/
public static void on(final GTU gtu, final String id, final double time, final boolean additionalCondition)
{
if (gtu.getId().equals(id) && gtu.getSimulator().getSimulatorTime().si >= time && additionalCondition)
{
trigger();
}
}
/**
* Method that is invoked on a break condition. A break-point here allows the user to debug specific situations.
*/
private static void trigger()
{
System.err.println("Break condition for debugging is true."); // SET BREAK POINT ON THIS LINE
}
}