if (bary == null)
if ((bary == null)&&(exprs!=null))
    private void invalidateArray(String name, int slot)    {        // Stop early if the field has already been invalidated.        if (isFieldInvalidated(name)) return;        boolean[] bary = (boolean[])noarrays.get(name);        JExpression[] exprs = (JExpression[])arrays.get(name);        if (bary == null)        {            bary = new boolean[exprs.length];            noarrays.put(name, bary);        }        bary[slot] = true;        exprs[slot] = null;    }