CustomSortedList.java 文件源码

private void addRemove(Change<? extends E> c) {
    if (c.getFrom() == 0 && c.getRemovedSize() == size) {
        removeAllFromMapping();
    } else {
        for (int i = 0, sz = c.getRemovedSize(); i < sz; ++i) {
            removeFromMapping(c.getFrom(), c.getRemoved().get(i));
        }
    }
    if (size == 0) {
        setAllToMapping(c.getList(), c.getTo()); // This is basically equivalent to getAddedSubList
                                                 // as size is 0, only valid "from" is also 0
    } else {
        for (int i = c.getFrom(), to = c.getTo(); i < to; ++i) {
            insertToMapping(c.getList().get(i), i);
        }
    }
}