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A Java security provider for supporting ShangMi algorithms in public key infrastructure
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/*
 * Copyright (C) 2022, 2023, THL A29 Limited, a Tencent company. 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 as
 * published by the Free Software Foundation. THL A29 Limited designates
 * this particular file as subject to the "Classpath" exception as provided
 * in the LICENSE file that accompanied this code.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package com.tencent.kona.sun.security.util;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class CollectionUtil {

    public static  List list(E... elements) {
        return Arrays.asList(elements);
    }

    public static  Set set(E... elements) {
        if (elements == null || elements.length == 0) {
            return Collections.emptySet();
        }

        Set set = new HashSet(list(elements));
        return Collections.unmodifiableSet(set);
    }

    public static  Map map(K key, V value) {
        Map map = new HashMap();
        map.put(key, value);
        return Collections.unmodifiableMap(map);
    }

    public static  Map map(
            K key1, V value1,
            K key2, V value2) {
        Map map = new HashMap();
        map.put(key1, value1);
        map.put(key2, value2);
        return Collections.unmodifiableMap(map);
    }

    public static  Map map(
            K key1, V value1,
            K key2, V value2,
            K key3, V value3) {
        Map map = new HashMap();
        map.put(key1, value1);
        map.put(key2, value2);
        map.put(key3, value3);
        return Collections.unmodifiableMap(map);
    }

    public static  Map map(
            K key1, V value1,
            K key2, V value2,
            K key3, V value3,
            K key4, V value4) {
        Map map = new HashMap();
        map.put(key1, value1);
        map.put(key2, value2);
        map.put(key3, value3);
        map.put(key4, value4);
        return Collections.unmodifiableMap(map);
    }

    public static  Map map(
            K key1, V value1,
            K key2, V value2,
            K key3, V value3,
            K key4, V value4,
            K key5, V value5) {
        Map map = new HashMap();
        map.put(key1, value1);
        map.put(key2, value2);
        map.put(key3, value3);
        map.put(key4, value4);
        map.put(key5, value5);
        return Collections.unmodifiableMap(map);
    }

    public static  Map map(
            K key1, V value1,
            K key2, V value2,
            K key3, V value3,
            K key4, V value4,
            K key5, V value5,
            K key6, V value6) {
        Map map = new HashMap();
        map.put(key1, value1);
        map.put(key2, value2);
        map.put(key3, value3);
        map.put(key4, value4);
        map.put(key5, value5);
        map.put(key6, value6);
        return Collections.unmodifiableMap(map);
    }
}