1package org.bouncycastle.util;
2
3public interface Memoable
4{
5    /**
6     * Produce a copy of this object with its configuration and in its current state.
7     * <p>
8     * The returned object may be used simply to store the state, or may be used as a similar object
9     * starting from the copied state.
10     */
11    public Memoable copy();
12
13    /**
14     * Restore a copied object state into this object.
15     * <p>
16     * Implementations of this method <em>should</em> try to avoid or minimise memory allocation to perform the reset.
17     *
18     * @param other an object originally {@link #copy() copied} from an object of the same type as this instance.
19     * @throws ClassCastException if the provided object is not of the correct type.
20     * @throws MemoableResetException if the <b>other</b> parameter is in some other way invalid.
21     */
22    public void reset(Memoable other);
23}
24