SimpleTimeLimiter.java 文件源码

private static Exception throwCause(Exception e, boolean combineStackTraces)
    throws Exception {
  Throwable cause = e.getCause();
  if (cause == null) {
    throw e;
  }
  if (combineStackTraces) {
    StackTraceElement[] combined = ObjectArrays.concat(cause.getStackTrace(),
        e.getStackTrace(), StackTraceElement.class);
    cause.setStackTrace(combined);
  }
  if (cause instanceof Exception) {
    throw (Exception) cause;
  }
  if (cause instanceof Error) {
    throw (Error) cause;
  }
  // The cause is a weird kind of Throwable, so throw the outer exception.
  throw e;
}