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 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
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 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
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package org.apache.commons.collections4.sequence;

import java.util.List;

This interface is devoted to handle synchronized replacement sequences.
See Also:
ReplacementsFinder
Since:
4.0/**
 * This interface is devoted to handle synchronized replacement sequences.
 *
 * @see ReplacementsFinder
 * @since 4.0
 */
public interface ReplacementsHandler<T> {

    
Handle two synchronized sequences.
 This method is called by a ReplacementsFinder instance when it has synchronized two sub-sequences of object arrays being compared, and at least one of the sequences is non-empty. Since the sequences are synchronized, the objects before the two sub-sequences are equals (if they exist). This property also holds for the objects after the two sub-sequences. 

The replacement is defined as replacing the from
sub-sequence into the to sub-sequence.
Params:
skipped –  number of tokens skipped since the last call (i.e. number of
  tokens that were in both sequences), this number should be strictly positive
  except on the very first call where it can be zero (if the first object of
  the two sequences are different)
from –  sub-sequence of objects coming from the first sequence
to –  sub-sequence of objects coming from the second sequence/**
     * Handle two synchronized sequences.
     * <p>
     * This method is called by a {@link ReplacementsFinder ReplacementsFinder}
     * instance when it has synchronized two sub-sequences of object arrays
     * being compared, and at least one of the sequences is non-empty. Since the
     * sequences are synchronized, the objects before the two sub-sequences are
     * equals (if they exist). This property also holds for the objects after
     * the two sub-sequences.
     * <p>
     * The replacement is defined as replacing the <code>from</code>
     * sub-sequence into the <code>to</code> sub-sequence.
     *
     * @param skipped  number of tokens skipped since the last call (i.e. number of
     *   tokens that were in both sequences), this number should be strictly positive
     *   except on the very first call where it can be zero (if the first object of
     *   the two sequences are different)
     * @param from  sub-sequence of objects coming from the first sequence
     * @param to  sub-sequence of objects coming from the second sequence
     */
    void handleReplacement(int skipped, List<T> from, List<T> to);

}