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Carefully designed and efficient extension of the Java Collections Framework with primitive specializations and more, built for Java 8 (Implementation)

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/*
 * Copyright 2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.koloboke.collect.impl.hash;

import com.koloboke.collect.impl.*;
import com.koloboke.collect.map.hash.HashDoubleDoubleMap;
import javax.annotation.Nonnull;


public abstract class ImmutableQHashParallelKVDoubleDoubleMapSO
        extends ImmutableQHashParallelKVDoubleKeyMap
        implements HashDoubleDoubleMap, InternalDoubleDoubleMapOps, ParallelKVDoubleDoubleQHash {


    
    int valueIndex(long value) {
        if (this.isEmpty())
            return -1;
        int index = -1;
        long[] tab = table;
        for (int i = tab.length - 2; i >= 0; i -= 2) {
            if (tab[i] < FREE_BITS) {
                if (value == tab[i + 1]) {
                    index = i;
                    break;
                }
            }
        }
        return index;
    }

    
    boolean containsValue(long value) {
        return valueIndex(value) >= 0;
    }

    boolean removeValue(long value) {
        throw new UnsupportedOperationException();
    }
    
    int valueIndex(double value) {
        if (this.isEmpty())
            return -1;
        long val = Double.doubleToLongBits(value);
        int index = -1;
        long[] tab = table;
        for (int i = tab.length - 2; i >= 0; i -= 2) {
            if (tab[i] < FREE_BITS) {
                if (val == tab[i + 1]) {
                    index = i;
                    break;
                }
            }
        }
        return index;
    }

    @Override public
    boolean containsValue(double value) {
        return valueIndex(value) >= 0;
    }

    boolean removeValue(double value) {
        throw new UnsupportedOperationException();
    }

    @Override
    public boolean containsValue(Object value) {
        return containsValue(((Double) value).doubleValue());
    }

}