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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.Equivalence;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;


final class ImmutableQHashParallelKVObjObjMap
        extends ImmutableQHashParallelKVObjObjMapGO {

    


    static final class WithCustomKeyEquivalence
            extends ImmutableQHashParallelKVObjObjMapGO {
        Equivalence keyEquivalence;

        

        @SuppressWarnings("unchecked")
        @Override
        @Nonnull
        public Equivalence keyEquivalence() {
            return (Equivalence) keyEquivalence;
        }

        @Override
        boolean nullableKeyEquals(@Nullable K a, @Nullable K b) {
            return keyEquivalence.nullableEquivalent(a, b);
        }

        @Override
        boolean keyEquals(@Nonnull K a, @Nullable K b) {
            return b != null && keyEquivalence.equivalent(a, b);
        }

        @Override
        int nullableKeyHashCode(@Nullable K key) {
            return keyEquivalence.nullableHash(key);
        }

        @Override
        int keyHashCode(@Nonnull K key) {
            return keyEquivalence.hash(key);
        }
    }

    
    static final class WithCustomValueEquivalence
            extends ImmutableQHashParallelKVObjObjMapGO {
        Equivalence valueEquivalence;

        

        @SuppressWarnings("unchecked")
        @Override
        @Nonnull
        public Equivalence valueEquivalence() {
            return (Equivalence) valueEquivalence;
        }

        @Override
        boolean nullableValueEquals(@Nullable V a, @Nullable V b) {
            return valueEquivalence.nullableEquivalent(a, b);
        }

        @Override
        boolean valueEquals(@Nonnull V a, @Nullable V b) {
            return b != null && valueEquivalence.equivalent(a, b);
        }

        @Override
        int nullableValueHashCode(@Nullable V value) {
            return valueEquivalence.nullableHash(value);
        }

        @Override
        int valueHashCode(@Nonnull V value) {
            return valueEquivalence.hash(value);
        }
    }


    static final class WithCustomEquivalences
            extends ImmutableQHashParallelKVObjObjMapGO {
        Equivalence keyEquivalence;
        Equivalence valueEquivalence;

        @SuppressWarnings("unchecked")
        @Override
        @Nonnull
        public Equivalence keyEquivalence() {
            return (Equivalence) keyEquivalence;
        }

        @Override
        boolean nullableKeyEquals(@Nullable K a, @Nullable K b) {
            return keyEquivalence.nullableEquivalent(a, b);
        }

        @Override
        boolean keyEquals(@Nonnull K a, @Nullable K b) {
            return b != null && keyEquivalence.equivalent(a, b);
        }

        @Override
        int nullableKeyHashCode(@Nullable K key) {
            return keyEquivalence.nullableHash(key);
        }

        @Override
        int keyHashCode(@Nonnull K key) {
            return keyEquivalence.hash(key);
        }

        @SuppressWarnings("unchecked")
        @Override
        @Nonnull
        public Equivalence valueEquivalence() {
            return (Equivalence) valueEquivalence;
        }

        @Override
        boolean nullableValueEquals(@Nullable V a, @Nullable V b) {
            return valueEquivalence.nullableEquivalent(a, b);
        }

        @Override
        boolean valueEquals(@Nonnull V a, @Nullable V b) {
            return b != null && valueEquivalence.equivalent(a, b);
        }

        @Override
        int nullableValueHashCode(@Nullable V value) {
            return valueEquivalence.nullableHash(value);
        }

        @Override
        int valueHashCode(@Nonnull V value) {
            return valueEquivalence.hash(value);
        }
    }

}