/**
* Adds a handler to the Lifecycle and starts it if the lifecycle has already been started.
*
* @param handler The hander to add to the lifecycle
* @param stage The stage to add the lifecycle at
* @throws Exception an exception thrown from handler.start(). If an exception is thrown, the
* handler is *not* added
*/
public void addMaybeStartHandler(Handler handler, Stage stage) throws Exception {
synchronized (handlers) {
if (started.get()) {
if (currStage == null || stage.compareTo(currStage) < 1) {
handler.start();
}
}
handlers.get(stage).add(handler);
}
}
public void start() throws Exception {
synchronized (handlers) {
started.set(true);
for (Stage stage : stagesOrdered()) {
currStage = stage;
for (Handler handler : handlers.get(stage)) {
handler.start();
}
}
}
}
/**
* Removes the range between start and end from the given exception handlers.
*
* @param h an exception handler list.
* @param start the start of the range to be removed.
* @param end the end of the range to be removed. Maybe null.
* @return the exception handler list with the start-end range removed.
*/
static Handler remove(Handler h, Label start, Label end) {
if (h == null) {
return null;
} else {
h.next = remove(h.next, start, end);
}
int hstart = h.start.position;
int hend = h.end.position;
int s = start.position;
int e = end == null ? Integer.MAX_VALUE : end.position;
// if [hstart,hend[ and [s,e[ intervals intersect...
if (s < hend && e > hstart) {
if (s <= hstart) {
if (e >= hend) {
// [hstart,hend[ fully included in [s,e[, h removed
h = h.next;
} else {
// [hstart,hend[ minus [s,e[ = [e,hend[
h.start = end;
}
} else if (e >= hend) {
// [hstart,hend[ minus [s,e[ = [hstart,s[
h.end = start;
} else {
// [hstart,hend[ minus [s,e[ = [hstart,s[ + [e,hend[
Handler g = new Handler();
g.start = end;
g.end = h.end;
g.handler = h.handler;
g.desc = h.desc;
g.type = h.type;
g.next = h.next;
h.end = start;
h.next = g;
}
}
return h;
}