void perform(
MultiStatus status, EngineSession session, Operand[] operands, IProgressMonitor monitor) {
SubMonitor subMonitor =
SubMonitor.convert(monitor, prePerformWork + mainPerformWork + postPerformWork);
session.recordPhaseEnter(this);
prePerform(status, session, subMonitor.newChild(prePerformWork));
if (status.matches(IStatus.ERROR | IStatus.CANCEL)) return;
session.recordPhaseStart(this);
subMonitor.setWorkRemaining(mainPerformWork + postPerformWork);
mainPerform(status, session, operands, subMonitor.newChild(mainPerformWork));
if (status.matches(IStatus.ERROR | IStatus.CANCEL)) return;
session.recordPhaseEnd(this);
subMonitor.setWorkRemaining(postPerformWork);
postPerform(status, session, subMonitor.newChild(postPerformWork));
phaseParameters.clear();
if (status.matches(IStatus.ERROR | IStatus.CANCEL)) return;
session.recordPhaseExit(this);
subMonitor.done();
}
