test/jdk/java/util/SequencedCollection/SimpleSortedMap.java

/*
 * Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
 */

import java.util.*;

/**
 * A SortedMap implementation that does not implement NavigableMap. Useful for
 * testing ReverseOrderSortedMapView. Underlying implementation provided by TreeMap.
 */
public class SimpleSortedMap<K,V> implements SortedMap<K,V> {
    final SortedMap<K,V> map;

    public SimpleSortedMap() {
        map = new TreeMap<>();
    }

    public SimpleSortedMap(Comparator<? super K> comparator) {
        map = new TreeMap<>(comparator);
    }

    public SimpleSortedMap(Map<? extends K,? extends V> m) {
        map = new TreeMap<>(m);
    }

    // ========== Object ==========

    public boolean equals(Object o) {
        return map.equals(o);
    }

    public int hashCode() {
        return map.hashCode();
    }

    public String toString() {
        return map.toString();
    }

    // ========== Map ==========

    public void clear() {
        map.clear();
    }

    public boolean containsKey(Object key) {
        return map.containsKey(key);
    }

    public boolean containsValue(Object value) {
        return map.containsValue(value);
    }

    public Set<Map.Entry<K,V>> entrySet() {
        return map.entrySet();
    }

    public V get(Object key) {
        return map.get(key);
    }

    public boolean isEmpty() {
        return map.isEmpty();
    }

    public Set<K> keySet() {
        return map.keySet();
    }

    public V put(K key, V value) {
        return map.put(key, value);
    }

    public void putAll(Map<? extends K,? extends V> m) {
        map.putAll(m);
    }

    public V remove(Object key) {
        return map.remove(key);
    }

    public int size() {
        return map.size();
    }

    public Collection<V> values() {
        return map.values();
    }

    // ========== SortedMap ==========

    public Comparator<? super K> comparator() {
        return map.comparator();
    }

    public K firstKey() {
        return map.firstKey();
    }

    public SortedMap<K,V> headMap(K toKey) {
        return map.headMap(toKey);
    }

    public K lastKey() {
        return map.lastKey();
    }

    public SortedMap<K,V> subMap(K fromKey, K toKey) {
        return map.subMap(fromKey, toKey);
    }

    public SortedMap<K,V> tailMap(K fromKey) {
        return map.tailMap(fromKey);
    }
}