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GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
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/*
 * Copyright 2014 Goldman Sachs.
 *
 * 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.gs.collections.impl.map.immutable.primitive;

import java.io.IOException;
import java.io.Serializable;
import java.util.NoSuchElementException;

import com.gs.collections.api.ShortIterable;
import com.gs.collections.api.LongIterable;
import com.gs.collections.api.LazyShortIterable;
import com.gs.collections.api.LazyLongIterable;
import com.gs.collections.api.RichIterable;
import com.gs.collections.api.bag.primitive.MutableLongBag;
import com.gs.collections.api.block.function.primitive.LongToObjectFunction;
import com.gs.collections.api.block.function.primitive.ObjectLongToObjectFunction;
import com.gs.collections.api.block.predicate.primitive.ShortLongPredicate;
import com.gs.collections.api.block.predicate.primitive.LongPredicate;
import com.gs.collections.api.block.procedure.primitive.ShortProcedure;
import com.gs.collections.api.block.procedure.primitive.ShortLongProcedure;
import com.gs.collections.api.block.procedure.primitive.LongProcedure;
import com.gs.collections.api.collection.ImmutableCollection;
import com.gs.collections.api.collection.primitive.ImmutableLongCollection;
import com.gs.collections.api.collection.primitive.MutableLongCollection;
import com.gs.collections.api.iterator.LongIterator;
import com.gs.collections.api.list.primitive.MutableLongList;
import com.gs.collections.api.map.primitive.ShortLongMap;
import com.gs.collections.api.map.primitive.ImmutableShortLongMap;
import com.gs.collections.api.set.primitive.MutableShortSet;
import com.gs.collections.api.set.primitive.MutableLongSet;
import com.gs.collections.api.tuple.primitive.ShortLongPair;
import com.gs.collections.impl.bag.mutable.primitive.LongHashBag;
import com.gs.collections.impl.collection.mutable.primitive.UnmodifiableLongCollection;
import com.gs.collections.impl.factory.Lists;
import com.gs.collections.impl.factory.primitive.LongLists;
import com.gs.collections.impl.iterator.ImmutableEmptyLongIterator;
import com.gs.collections.impl.lazy.primitive.LazyLongIterableAdapter;
import com.gs.collections.impl.list.mutable.primitive.LongArrayList;
import com.gs.collections.impl.set.mutable.primitive.LongHashSet;
import com.gs.collections.impl.set.mutable.primitive.ShortHashSet;
import com.gs.collections.impl.set.mutable.primitive.UnmodifiableShortSet;
import com.gs.collections.impl.utility.LazyIterate;
import com.gs.collections.impl.utility.primitive.LazyShortIterate;

/**
 * ImmutableShortLongEmptyMap is an optimization for {@link ImmutableShortLongMap} of size 0.
 * This file was automatically generated from template file immutablePrimitivePrimitiveEmptyMap.stg.
 *
 * @since 4.0.
 */
final class ImmutableShortLongEmptyMap implements ImmutableShortLongMap, Serializable
{
    static final ImmutableShortLongMap INSTANCE = new ImmutableShortLongEmptyMap();

    private static final long serialVersionUID = 1L;
    private static final long EMPTY_VALUE = 0L;

    private Object readResolve()
    {
        return INSTANCE;
    }

    public long get(short key)
    {
        return EMPTY_VALUE;
    }

    public long getIfAbsent(short key, long ifAbsent)
    {
        return ifAbsent;
    }

    public long getOrThrow(short key)
    {
        throw new IllegalStateException("Key " + key + " not present.");
    }

    public boolean containsKey(short key)
    {
        return false;
    }

    public boolean containsValue(long value)
    {
        return false;
    }

    public void forEachValue(LongProcedure procedure)
    {
    }

    public void forEachKey(ShortProcedure procedure)
    {
    }

    public void forEachKeyValue(ShortLongProcedure procedure)
    {
    }

    public LazyShortIterable keysView()
    {
        return LazyShortIterate.empty();
    }

    public RichIterable keyValuesView()
    {
        return LazyIterate.empty();
    }

    public ImmutableShortLongMap select(ShortLongPredicate predicate)
    {
        return this;
    }

    public ImmutableShortLongMap reject(ShortLongPredicate predicate)
    {
        return this;
    }

    public ImmutableShortLongMap toImmutable()
    {
        return this;
    }

    public LongIterator longIterator()
    {
        return ImmutableEmptyLongIterator.INSTANCE;
    }

    public void forEach(LongProcedure procedure)
    {
    }

    /**
     * @since 7.0.
     */
    public void each(LongProcedure procedure)
    {
    }

    public int count(LongPredicate predicate)
    {
        return 0;
    }

    public long sum()
    {
        return 0L;
    }

    public long min()
    {
        throw new NoSuchElementException();
    }

    public long max()
    {
        throw new NoSuchElementException();
    }

    public long maxIfEmpty(long defaultValue)
    {
        return defaultValue;
    }

    public long minIfEmpty(long defaultValue)
    {
        return defaultValue;
    }

    public double average()
    {
        throw new ArithmeticException();
    }

    public double median()
    {
        throw new ArithmeticException();
    }

    public long[] toSortedArray()
    {
        return new long[0];
    }

    public MutableLongList toSortedList()
    {
        return new LongArrayList();
    }

    public boolean anySatisfy(LongPredicate predicate)
    {
        return false;
    }

    public boolean allSatisfy(LongPredicate predicate)
    {
        return true;
    }

    public boolean noneSatisfy(LongPredicate predicate)
    {
        return true;
    }

    public ImmutableLongCollection select(LongPredicate predicate)
    {
        return LongLists.immutable.with();
    }

    public ImmutableLongCollection reject(LongPredicate predicate)
    {
        return LongLists.immutable.with();
    }

    public long detectIfNone(LongPredicate predicate, long ifNone)
    {
        return ifNone;
    }

    public  ImmutableCollection collect(LongToObjectFunction function)
    {
        return Lists.immutable.of();
    }

    public  T injectInto(T injectedValue, ObjectLongToObjectFunction function)
    {
        return injectedValue;
    }

    public long[] toArray()
    {
        return new long[0];
    }

    public boolean contains(long value)
    {
        return false;
    }

    public boolean containsAll(long... source)
    {
        return source.length == 0;
    }

    public boolean containsAll(LongIterable source)
    {
        return source.isEmpty();
    }

    public MutableLongList toList()
    {
        return new LongArrayList();
    }

    public MutableLongSet toSet()
    {
        return new LongHashSet();
    }

    public MutableLongBag toBag()
    {
        return new LongHashBag();
    }

    public LazyLongIterable asLazy()
    {
        return new LazyLongIterableAdapter(this);
    }

    public ImmutableShortLongMap newWithKeyValue(short key, long value)
    {
        return new ImmutableShortLongSingletonMap(key, value);
    }

    public ImmutableShortLongMap newWithoutKey(short key)
    {
        return this;
    }

    public ImmutableShortLongMap newWithoutAllKeys(ShortIterable keys)
    {
        return this;
    }

    public int size()
    {
        return 0;
    }

    public boolean isEmpty()
    {
        return true;
    }

    public boolean notEmpty()
    {
        return false;
    }

    public MutableShortSet keySet()
    {
        return UnmodifiableShortSet.of(new ShortHashSet());
    }

    public MutableLongCollection values()
    {
        return UnmodifiableLongCollection.of(new LongArrayList());
    }

    @Override
    public boolean equals(Object obj)
    {
        if (obj == this)
        {
            return true;
        }
        if (!(obj instanceof ShortLongMap))
        {
            return false;
        }
        ShortLongMap map = (ShortLongMap) obj;
        return map.isEmpty();
    }

    @Override
    public int hashCode()
    {
        return 0;
    }

    @Override
    public String toString()
    {
        return "{}";
    }

    public String makeString()
    {
        return "";
    }

    public String makeString(String separator)
    {
        return "";
    }

    public String makeString(String start, String separator, String end)
    {
        return start + end;
    }

    public void appendString(Appendable appendable)
    {
    }

    public void appendString(Appendable appendable, String separator)
    {
    }

    public void appendString(Appendable appendable, String start, String separator, String end)
    {
        try
        {
            appendable.append(start);
            appendable.append(end);
        }
        catch (IOException e)
        {
            throw new RuntimeException(e);
        }
    }
}