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package edu.rice.cs.util;

import java.io.*;

import java.util.Date;

import java.text.SimpleDateFormat;

import java.util.TimeZone;

/** Runnable with extended stack trace. Catches all thrown exceptions and rethrows them

* with the stack trace of the creation site of this RunnableEST appended.

* This makes it possible to find out where the Runnable was created.

* Needs to override the runEST() method now.

*/

public abstract class RunnableEST implements Runnable {

public final RunnableEST.Exception _creation = new RunnableEST.Exception("Exception thrown in runnable.");

public void run() {

try {

runEST();

}

catch(Throwable t) {

_creation.initCause(t);

throw _creation;

}

}

public abstract void runEST();

public static class Exception extends RuntimeException {

public Exception(String reason) {

super(reason);

}

public String getMessage() {

return super.getCause().getMessage();

}

public String getLocalizedMessage() {

return super.getCause().getMessage();

}

public Throwable getCause() {

return super.getCause();

}

public Throwable initCause(Throwable t) {

super.initCause(t);

StackTraceElement[] ts = t.getStackTrace();

StackTraceElement[] cs = super.getStackTrace();

java.util.ArrayList<StackTraceElement> list = new java.util.ArrayList<StackTraceElement>();

for(int i = 0; i < ts.length-9; ++i) list.add(ts[i]);

for(int i=2; i < cs.length; ++i) list.add(cs[i]);

setStackTrace(list.toArray(new StackTraceElement[list.size()]));

return this;

}

public String toString() {

String s = getClass().getName() + ": " + super.getCause().getClass();

String message = getLocalizedMessage();

return (message != null) ? (s + ": " + message) : s;

}

}

}