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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 2015 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.mutable.primitive;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.BitSet;
import java.util.Collection;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Set;

import com.gs.collections.api.BooleanIterable;
import com.gs.collections.api.LazyBooleanIterable;
import com.gs.collections.api.LazyIterable;
import com.gs.collections.api.RichIterable;
import com.gs.collections.api.bag.primitive.MutableBooleanBag;
import com.gs.collections.api.block.function.primitive.BooleanFunction;
import com.gs.collections.api.block.function.primitive.BooleanFunction0;
import com.gs.collections.api.block.function.primitive.BooleanToBooleanFunction;
import com.gs.collections.api.block.function.primitive.BooleanToObjectFunction;
import com.gs.collections.api.block.function.primitive.ObjectBooleanToObjectFunction;
import com.gs.collections.api.block.predicate.primitive.BooleanPredicate;
import com.gs.collections.api.block.predicate.primitive.ObjectBooleanPredicate;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.block.procedure.Procedure2;
import com.gs.collections.api.block.procedure.primitive.BooleanProcedure;
import com.gs.collections.api.block.procedure.primitive.ObjectBooleanProcedure;
import com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure;
import com.gs.collections.api.collection.MutableCollection;
import com.gs.collections.api.collection.primitive.ImmutableBooleanCollection;
import com.gs.collections.api.collection.primitive.MutableBooleanCollection;
import com.gs.collections.api.iterator.BooleanIterator;
import com.gs.collections.api.iterator.MutableBooleanIterator;
import com.gs.collections.api.list.MutableList;
import com.gs.collections.api.list.primitive.MutableBooleanList;
import com.gs.collections.api.map.primitive.ImmutableObjectBooleanMap;
import com.gs.collections.api.map.primitive.MutableObjectBooleanMap;
import com.gs.collections.api.map.primitive.ObjectBooleanMap;
import com.gs.collections.api.set.primitive.BooleanSet;
import com.gs.collections.api.set.primitive.MutableBooleanSet;
import com.gs.collections.api.tuple.primitive.ObjectBooleanPair;
import com.gs.collections.impl.bag.mutable.primitive.BooleanHashBag;
import com.gs.collections.impl.collection.mutable.primitive.SynchronizedBooleanCollection;
import com.gs.collections.impl.collection.mutable.primitive.UnmodifiableBooleanCollection;
import com.gs.collections.impl.factory.primitive.BooleanLists;
import com.gs.collections.impl.factory.primitive.ObjectBooleanMaps;
import com.gs.collections.impl.lazy.AbstractLazyIterable;
import com.gs.collections.impl.lazy.primitive.LazyBooleanIterableAdapter;
import com.gs.collections.impl.list.mutable.FastList;
import com.gs.collections.impl.list.mutable.primitive.BooleanArrayList;
import com.gs.collections.impl.set.mutable.primitive.BooleanHashSet;
import com.gs.collections.impl.tuple.primitive.PrimitiveTuples;

/**
 * @since 3.0.
 */
public class ObjectBooleanHashMap implements MutableObjectBooleanMap, Externalizable
{
    public static final boolean EMPTY_VALUE = false;

    private static final long serialVersionUID = 1L;

    /**
     * @deprecated in 5.1.0.
     */
    @Deprecated
    private static final float DEFAULT_LOAD_FACTOR = 0.5f;
    private static final int OCCUPIED_DATA_RATIO = 2;
    private static final int OCCUPIED_SENTINEL_RATIO = 4;
    private static final int DEFAULT_INITIAL_CAPACITY = 8;

    private static final Object NULL_KEY = new Object()
    {
        @Override
        public boolean equals(Object obj)
        {
            throw new RuntimeException("Possible corruption through unsynchronized concurrent modification.");
        }

        @Override
        public int hashCode()
        {
            throw new RuntimeException("Possible corruption through unsynchronized concurrent modification.");
        }

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

    private static final Object REMOVED_KEY = new Object()
    {
        @Override
        public boolean equals(Object obj)
        {
            throw new RuntimeException("Possible corruption through unsynchronized concurrent modification.");
        }

        @Override
        public int hashCode()
        {
            throw new RuntimeException("Possible corruption through unsynchronized concurrent modification.");
        }

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

    private Object[] keys;
    private BitSet values;

    private int occupiedWithData;
    private int occupiedWithSentinels;

    public ObjectBooleanHashMap()
    {
        this.allocateTable(DEFAULT_INITIAL_CAPACITY << 1);
    }

    public ObjectBooleanHashMap(int initialCapacity)
    {
        if (initialCapacity < 0)
        {
            throw new IllegalArgumentException("initial capacity cannot be less than 0");
        }
        int capacity = this.smallestPowerOfTwoGreaterThan(this.fastCeil(initialCapacity * OCCUPIED_DATA_RATIO));
        this.allocateTable(capacity);
    }

    public ObjectBooleanHashMap(ObjectBooleanMap map)
    {
        this(Math.max(map.size(), DEFAULT_INITIAL_CAPACITY));
        this.putAll(map);
    }

    /**
     * @deprecated in 5.1.0.
     */
    @Deprecated
    public ObjectBooleanHashMap(int initialCapacity, float loadFactor)
    {
        this(initialCapacity);
    }

    private int smallestPowerOfTwoGreaterThan(int n)
    {
        return n > 1 ? Integer.highestOneBit(n - 1) << 1 : 1;
    }

    private int fastCeil(float v)
    {
        int possibleResult = (int) v;
        if (v - possibleResult > 0.0F)
        {
            possibleResult++;
        }
        return possibleResult;
    }

    public static  ObjectBooleanHashMap newMap()
    {
        return new ObjectBooleanHashMap();
    }

    public static  ObjectBooleanHashMap newWithKeysValues(K key1, boolean value1)
    {
        return new ObjectBooleanHashMap(1).withKeyValue(key1, value1);
    }

    public static  ObjectBooleanHashMap newWithKeysValues(K key1, boolean value1, K key2, boolean value2)
    {
        return new ObjectBooleanHashMap(2).withKeysValues(key1, value1, key2, value2);
    }

    public static  ObjectBooleanHashMap newWithKeysValues(K key1, boolean value1, K key2, boolean value2, K key3, boolean value3)
    {
        return new ObjectBooleanHashMap(3).withKeysValues(key1, value1, key2, value2, key3, value3);
    }

    public static  ObjectBooleanHashMap newWithKeysValues(K key1, boolean value1, K key2, boolean value2, K key3, boolean value3, K key4, boolean value4)
    {
        return new ObjectBooleanHashMap(4).withKeysValues(key1, value1, key2, value2, key3, value3, key4, value4);
    }

    @Override
    public boolean equals(Object obj)
    {
        if (this == obj)
        {
            return true;
        }

        if (!(obj instanceof ObjectBooleanMap))
        {
            return false;
        }

        ObjectBooleanMap other = (ObjectBooleanMap) obj;

        if (this.size() != other.size())
        {
            return false;
        }

        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && (!other.containsKey(this.toNonSentinel(this.keys[i])) || this.values.get(i) != other.getOrThrow(this.toNonSentinel(this.keys[i]))))
            {
                return false;
            }
        }
        return true;
    }

    @Override
    public int hashCode()
    {
        int result = 0;

        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]))
            {
                result += (this.toNonSentinel(this.keys[i]) == null ? 0 : this.keys[i].hashCode()) ^ (this.values.get(i) ? 1231 : 1237);
            }
        }
        return result;
    }

    @Override
    public String toString()
    {
        StringBuilder appendable = new StringBuilder();

        appendable.append("{");

        boolean first = true;

        for (int i = 0; i < this.keys.length; i++)
        {
            Object key = this.keys[i];
            if (ObjectBooleanHashMap.isNonSentinel(key))
            {
                if (!first)
                {
                    appendable.append(", ");
                }
                appendable.append(this.toNonSentinel(key)).append("=").append(this.values.get(i));
                first = false;
            }
        }
        appendable.append("}");

        return appendable.toString();
    }

    public int size()
    {
        return this.occupiedWithData;
    }

    public boolean isEmpty()
    {
        return this.size() == 0;
    }

    public boolean notEmpty()
    {
        return this.size() != 0;
    }

    public String makeString()
    {
        return this.makeString(", ");
    }

    public String makeString(String separator)
    {
        return this.makeString("", separator, "");
    }

    public String makeString(String start, String separator, String end)
    {
        Appendable stringBuilder = new StringBuilder();
        this.appendString(stringBuilder, start, separator, end);
        return stringBuilder.toString();
    }

    public void appendString(Appendable appendable)
    {
        this.appendString(appendable, ", ");
    }

    public void appendString(Appendable appendable, String separator)
    {
        this.appendString(appendable, "", separator, "");
    }

    public void appendString(Appendable appendable, String start, String separator, String end)
    {
        try
        {
            appendable.append(start);

            boolean first = true;

            for (int i = 0; i < this.keys.length; i++)
            {
                Object key = this.keys[i];
                if (ObjectBooleanHashMap.isNonSentinel(key))
                {
                    if (!first)
                    {
                        appendable.append(separator);
                    }
                    appendable.append(String.valueOf(this.values.get(i)));
                    first = false;
                }
            }
            appendable.append(end);
        }
        catch (IOException e)
        {
            throw new RuntimeException(e);
        }
    }

    public MutableBooleanIterator booleanIterator()
    {
        return new InternalBooleanIterator();
    }

    public boolean[] toArray()
    {
        boolean[] result = new boolean[this.size()];
        int index = 0;
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]))
            {
                result[index] = this.values.get(i);
                index++;
            }
        }
        return result;
    }

    public boolean contains(boolean value)
    {
        return this.containsValue(value);
    }

    public boolean containsAll(boolean... source)
    {
        for (boolean item : source)
        {
            if (!this.containsValue(item))
            {
                return false;
            }
        }
        return true;
    }

    public boolean containsAll(BooleanIterable source)
    {
        return this.containsAll(source.toArray());
    }

    public void forEach(BooleanProcedure procedure)
    {
        this.each(procedure);
    }

    /**
     * @since 7.0.
     */
    public void each(BooleanProcedure procedure)
    {
        this.forEachValue(procedure);
    }

    public boolean detectIfNone(BooleanPredicate predicate, boolean ifNone)
    {
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i)))
            {
                return this.values.get(i);
            }
        }
        return ifNone;
    }

    public MutableBooleanCollection select(BooleanPredicate predicate)
    {
        MutableBooleanList result = BooleanLists.mutable.empty();
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i)))
            {
                result.add(this.values.get(i));
            }
        }
        return result;
    }

    public int count(BooleanPredicate predicate)
    {
        int count = 0;
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i)))
            {
                count++;
            }
        }
        return count;
    }

    public MutableBooleanCollection reject(BooleanPredicate predicate)
    {
        MutableBooleanList result = BooleanLists.mutable.empty();
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && !predicate.accept(this.values.get(i)))
            {
                result.add(this.values.get(i));
            }
        }
        return result;
    }

    public boolean anySatisfy(BooleanPredicate predicate)
    {
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i)))
            {
                return true;
            }
        }
        return false;
    }

    public boolean allSatisfy(BooleanPredicate predicate)
    {
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && !predicate.accept(this.values.get(i)))
            {
                return false;
            }
        }
        return true;
    }

    public  MutableCollection collect(BooleanToObjectFunction function)
    {
        MutableList result = FastList.newList(this.size());
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]))
            {
                result.add(function.valueOf(this.values.get(i)));
            }
        }
        return result;
    }

    public boolean noneSatisfy(BooleanPredicate predicate)
    {
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i)))
            {
                return false;
            }
        }
        return true;
    }

    public MutableBooleanList toList()
    {
        MutableBooleanList result = new BooleanArrayList(this.size());
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]))
            {
                result.add(this.values.get(i));
            }
        }
        return result;
    }

    public MutableBooleanSet toSet()
    {
        MutableBooleanSet result = new BooleanHashSet();
        for (int i = 0; result.size() < 2 && i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]))
            {
                result.add(this.values.get(i));
            }
        }
        return result;
    }

    public MutableBooleanBag toBag()
    {
        MutableBooleanBag result = new BooleanHashBag();
        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]))
            {
                result.add(this.values.get(i));
            }
        }
        return result;
    }

    public LazyBooleanIterable asLazy()
    {
        return new LazyBooleanIterableAdapter(this);
    }

    public  V injectInto(V injectedValue, ObjectBooleanToObjectFunction function)
    {
        V result = injectedValue;

        for (int i = 0; i < this.keys.length; i++)
        {
            if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]))
            {
                result = function.valueOf(result, this.values.get(i));
            }
        }

        return result;
    }

    public void clear()
    {
        this.occupiedWithData = 0;
        this.occupiedWithSentinels = 0;
        Arrays.fill(this.keys, null);
        this.values.clear();
    }

    public void put(K key, boolean value)
    {
        int index = this.probe(key);

        if (ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key))
        {
            // key already present in map
            this.values.set(index, value);
            return;
        }

        this.addKeyValueAtIndex(key, value, index);
    }

    public void putAll(ObjectBooleanMap map)
    {
        map.forEachKeyValue(new ObjectBooleanProcedure()
        {
            public void value(K each, boolean parameter)
            {
                ObjectBooleanHashMap.this.put(each, parameter);
            }
        });
    }

    public void removeKey(K key)
    {
        int index = this.probe(key);
        this.removeKeyAtIndex(key, index);
    }

    private void removeKeyAtIndex(K key, int index)
    {
        if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key))
        {
            this.keys[index] = REMOVED_KEY;
            this.values.set(index, EMPTY_VALUE);
            this.occupiedWithData--;
            this.occupiedWithSentinels++;
        }
    }

    public void remove(Object key)
    {
        this.removeKey((K) key);
    }

    public boolean removeKeyIfAbsent(K key, boolean value)
    {
        int index = this.probe(key);
        if (ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key))
        {
            this.keys[index] = REMOVED_KEY;
            boolean oldValue = this.values.get(index);
            this.values.set(index, EMPTY_VALUE);
            this.occupiedWithData--;
            this.occupiedWithSentinels++;

            return oldValue;
        }
        return value;
    }

    public boolean getIfAbsentPut(K key, boolean value)
    {
        int index = this.probe(key);
        if (ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key))
        {
            return this.values.get(index);
        }
        this.addKeyValueAtIndex(key, value, index);
        return value;
    }

    public boolean getIfAbsentPut(K key, BooleanFunction0 function)
    {
        int index = this.probe(key);
        if (ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key))
        {
            return this.values.get(index);
        }
        boolean value = function.value();
        this.addKeyValueAtIndex(key, value, index);
        return value;
    }

    public boolean getIfAbsentPutWithKey(K key, BooleanFunction function)
    {
        int index = this.probe(key);
        if (ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key))
        {
            return this.values.get(index);
        }
        boolean value = function.booleanValueOf(key);
        this.addKeyValueAtIndex(key, value, index);
        return value;
    }

    public 

boolean getIfAbsentPutWith(K key, BooleanFunction function, P parameter) { int index = this.probe(key); if (ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values.get(index); } boolean value = function.booleanValueOf(parameter); this.addKeyValueAtIndex(key, value, index); return value; } public boolean updateValue(K key, boolean initialValueIfAbsent, BooleanToBooleanFunction function) { int index = this.probe(key); if (ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { this.values.set(index, function.valueOf(this.values.get(index))); return this.values.get(index); } boolean value = function.valueOf(initialValueIfAbsent); this.addKeyValueAtIndex(key, value, index); return value; } public ObjectBooleanHashMap withKeyValue(K key1, boolean value1) { this.put(key1, value1); return this; } public ObjectBooleanHashMap withoutKey(K key) { this.removeKey(key); return this; } public ObjectBooleanHashMap withoutAllKeys(Iterable keys) { for (K key : keys) { this.removeKey(key); } return this; } public MutableObjectBooleanMap asUnmodifiable() { return new UnmodifiableObjectBooleanMap(this); } public MutableObjectBooleanMap asSynchronized() { return new SynchronizedObjectBooleanMap(this); } public boolean get(Object key) { return this.getIfAbsent(key, EMPTY_VALUE); } public boolean getOrThrow(Object key) { int index = this.probe(key); if (ObjectBooleanHashMap.isNonSentinel(this.keys[index])) { return this.values.get(index); } throw new IllegalStateException("Key " + key + " not present."); } public boolean getIfAbsent(Object key, boolean ifAbsent) { int index = this.probe(key); if (ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values.get(index); } return ifAbsent; } public boolean containsKey(Object key) { int index = this.probe(key); return ObjectBooleanHashMap.isNonSentinel(this.keys[index]) && ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), key); } public boolean containsValue(boolean value) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && this.values.get(i) == value) { return true; } } return false; } public void forEachValue(BooleanProcedure procedure) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(this.keys[i])) { procedure.value(this.values.get(i)); } } } public void forEachKey(Procedure procedure) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(this.keys[i])) { procedure.value(this.toNonSentinel(this.keys[i])); } } } public void forEachKeyValue(ObjectBooleanProcedure procedure) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(this.keys[i])) { procedure.value(this.toNonSentinel(this.keys[i]), this.values.get(i)); } } } public ObjectBooleanHashMap select(ObjectBooleanPredicate predicate) { ObjectBooleanHashMap result = ObjectBooleanHashMap.newMap(); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && predicate.accept(this.toNonSentinel(this.keys[i]), this.values.get(i))) { result.put(this.toNonSentinel(this.keys[i]), this.values.get(i)); } } return result; } public ObjectBooleanHashMap reject(ObjectBooleanPredicate predicate) { ObjectBooleanHashMap result = ObjectBooleanHashMap.newMap(); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(this.keys[i]) && !predicate.accept(this.toNonSentinel(this.keys[i]), this.values.get(i))) { result.put(this.toNonSentinel(this.keys[i]), this.values.get(i)); } } return result; } public ImmutableObjectBooleanMap toImmutable() { return ObjectBooleanMaps.immutable.withAll(this); } public Set keySet() { return new KeySet(); } public MutableBooleanCollection values() { return new ValuesCollection(); } public LazyIterable keysView() { return new KeysView(); } public RichIterable> keyValuesView() { return new KeyValuesView(); } public void writeExternal(ObjectOutput out) throws IOException { out.writeInt(this.size()); /** * @deprecated in 5.1.0. */ out.writeFloat(DEFAULT_LOAD_FACTOR); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(this.keys[i])) { out.writeObject(this.toNonSentinel(this.keys[i])); out.writeBoolean(this.values.get(i)); } } } public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { int size = in.readInt(); /** * @deprecated in 5.1.0. */ in.readFloat(); int capacity = this.smallestPowerOfTwoGreaterThan(this.fastCeil(size * OCCUPIED_DATA_RATIO)); this.allocateTable(capacity); for (int i = 0; i < size; i++) { this.put((K) in.readObject(), in.readBoolean()); } } // exposed for testing int probe(Object element) { int index = this.spread(element); int removedIndex = -1; if (ObjectBooleanHashMap.isRemovedKey(this.keys[index])) { removedIndex = index; } else if (this.keys[index] == null || ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[index]), element)) { return index; } int nextIndex = index; int probe = 17; // loop until an empty slot is reached while (true) { // Probe algorithm: 17*n*(n+1)/2 where n = no. of collisions nextIndex += probe; probe += 17; nextIndex &= this.keys.length - 1; if (ObjectBooleanHashMap.isRemovedKey(this.keys[nextIndex])) { if (removedIndex == -1) { removedIndex = nextIndex; } } else if (ObjectBooleanHashMap.nullSafeEquals(this.toNonSentinel(this.keys[nextIndex]), element)) { return nextIndex; } else if (this.keys[nextIndex] == null) { return removedIndex == -1 ? nextIndex : removedIndex; } } } private static boolean isRemovedKey(Object key) { return key == REMOVED_KEY; } private static boolean nullSafeEquals(Object value, Object other) { if (value == null) { if (other == null) { return true; } } else if (other == value || value.equals(other)) { return true; } return false; } private K toNonSentinel(Object key) { return key == NULL_KEY ? null : (K) key; } // exposed for testing int spread(Object element) { // This function ensures that hashCodes that differ only by // constant multiples at each bit position have a bounded // number of collisions (approximately 8 at default load factor). int h = element == null ? 0 : element.hashCode(); h ^= h >>> 20 ^ h >>> 12; h ^= h >>> 7 ^ h >>> 4; return h & (this.keys.length - 1); } private void addKeyValueAtIndex(K key, boolean value, int index) { if (this.keys[index] == REMOVED_KEY) { --this.occupiedWithSentinels; } this.keys[index] = ObjectBooleanHashMap.toSentinelIfNull(key); this.values.set(index, value); ++this.occupiedWithData; if (this.occupiedWithData + this.occupiedWithSentinels > this.maxOccupiedWithData()) { this.rehashAndGrow(); } } private static Object toSentinelIfNull(Object key) { return key == null ? NULL_KEY : key; } private int maxOccupiedWithData() { int capacity = this.keys.length; // need at least one free slot for open addressing return Math.min(capacity - 1, capacity / OCCUPIED_DATA_RATIO); } private void rehashAndGrow() { this.rehash(this.keys.length << 1); } private void rehash(int newCapacity) { int oldLength = this.keys.length; Object[] old = this.keys; BitSet oldValues = this.values; this.allocateTable(newCapacity); this.occupiedWithData = 0; this.occupiedWithSentinels = 0; for (int i = 0; i < oldLength; i++) { if (ObjectBooleanHashMap.isNonSentinel(old[i])) { this.put(this.toNonSentinel(old[i]), oldValues.get(i)); } } } private void allocateTable(int sizeToAllocate) { this.keys = new Object[sizeToAllocate]; this.values = new BitSet(sizeToAllocate); } private static boolean isNonSentinel(K key) { return key != null && !ObjectBooleanHashMap.isRemovedKey(key); } private int maxOccupiedWithSentinels() { return this.keys.length / OCCUPIED_SENTINEL_RATIO; } public ObjectBooleanHashMap withKeysValues(K key1, boolean value1, K key2, boolean value2) { this.put(key1, value1); this.put(key2, value2); return this; } public ObjectBooleanHashMap withKeysValues(K key1, boolean value1, K key2, boolean value2, K key3, boolean value3) { this.put(key1, value1); this.put(key2, value2); this.put(key3, value3); return this; } public ObjectBooleanHashMap withKeysValues(K key1, boolean value1, K key2, boolean value2, K key3, boolean value3, K key4, boolean value4) { this.put(key1, value1); this.put(key2, value2); this.put(key3, value3); this.put(key4, value4); return this; } private class KeySet implements Set { @Override public boolean equals(Object obj) { if (obj instanceof Set) { Set other = (Set) obj; if (other.size() == this.size()) { return this.containsAll(other); } } return false; } @Override public int hashCode() { int hashCode = 0; Object[] table = ObjectBooleanHashMap.this.keys; for (int i = 0; i < table.length; i++) { Object key = table[i]; if (ObjectBooleanHashMap.isNonSentinel(key)) { K nonSentinelKey = ObjectBooleanHashMap.this.toNonSentinel(key); hashCode += nonSentinelKey == null ? 0 : nonSentinelKey.hashCode(); } } return hashCode; } public int size() { return ObjectBooleanHashMap.this.size(); } public boolean isEmpty() { return ObjectBooleanHashMap.this.isEmpty(); } public boolean contains(Object o) { return ObjectBooleanHashMap.this.containsKey(o); } public Object[] toArray() { int size = ObjectBooleanHashMap.this.size(); Object[] result = new Object[size]; this.copyKeys(result); return result; } public T[] toArray(T[] result) { int size = ObjectBooleanHashMap.this.size(); if (result.length < size) { result = (T[]) Array.newInstance(result.getClass().getComponentType(), size); } this.copyKeys(result); if (size < result.length) { result[size] = null; } return result; } public boolean add(K key) { throw new UnsupportedOperationException("Cannot call add() on " + this.getClass().getSimpleName()); } public boolean remove(Object key) { int oldSize = ObjectBooleanHashMap.this.size(); ObjectBooleanHashMap.this.removeKey((K) key); return oldSize != ObjectBooleanHashMap.this.size(); } public boolean containsAll(Collection collection) { for (Object aCollection : collection) { if (!ObjectBooleanHashMap.this.containsKey(aCollection)) { return false; } } return true; } public boolean addAll(Collection collection) { throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName()); } public boolean retainAll(Collection collection) { int oldSize = ObjectBooleanHashMap.this.size(); Iterator iterator = this.iterator(); while (iterator.hasNext()) { K next = iterator.next(); if (!collection.contains(next)) { iterator.remove(); } } return oldSize != ObjectBooleanHashMap.this.size(); } public boolean removeAll(Collection collection) { int oldSize = ObjectBooleanHashMap.this.size(); for (Object object : collection) { ObjectBooleanHashMap.this.removeKey((K) object); } return oldSize != ObjectBooleanHashMap.this.size(); } public void clear() { ObjectBooleanHashMap.this.clear(); } public Iterator iterator() { return new KeySetIterator(); } private void copyKeys(Object[] result) { int count = 0; for (int i = 0; i < ObjectBooleanHashMap.this.keys.length; i++) { Object key = ObjectBooleanHashMap.this.keys[i]; if (ObjectBooleanHashMap.isNonSentinel(key)) { result[count++] = ObjectBooleanHashMap.this.keys[i]; } } } } private class KeySetIterator implements Iterator { private int count; private int position; private K currentKey; private boolean isCurrentKeySet; public boolean hasNext() { return this.count < ObjectBooleanHashMap.this.size(); } public K next() { if (!this.hasNext()) { throw new NoSuchElementException(); } this.count++; Object[] keys = ObjectBooleanHashMap.this.keys; while (!ObjectBooleanHashMap.isNonSentinel(keys[this.position])) { this.position++; } this.currentKey = (K) ObjectBooleanHashMap.this.keys[this.position]; this.isCurrentKeySet = true; this.position++; return ObjectBooleanHashMap.this.toNonSentinel(this.currentKey); } public void remove() { if (!this.isCurrentKeySet) { throw new IllegalStateException(); } this.isCurrentKeySet = false; this.count--; if (ObjectBooleanHashMap.isNonSentinel(this.currentKey)) { int index = this.position - 1; ObjectBooleanHashMap.this.removeKeyAtIndex(ObjectBooleanHashMap.this.toNonSentinel(this.currentKey), index); } else { ObjectBooleanHashMap.this.removeKey(this.currentKey); } } } private class ValuesCollection implements MutableBooleanCollection { public boolean add(boolean element) { throw new UnsupportedOperationException("Cannot call add() on " + this.getClass().getSimpleName()); } public boolean addAll(boolean... source) { throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName()); } public boolean addAll(BooleanIterable source) { throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName()); } public boolean remove(boolean element) { for (int i = 0; i < ObjectBooleanHashMap.this.values.size(); i++) { if (ObjectBooleanHashMap.this.values.get(i) == element && ObjectBooleanHashMap.isNonSentinel(ObjectBooleanHashMap.this.keys[i])) { ObjectBooleanHashMap.this.removeKey(ObjectBooleanHashMap.this.toNonSentinel(ObjectBooleanHashMap.this.keys[i])); return true; } } return false; } public boolean removeAll(BooleanIterable source) { int oldSize = ObjectBooleanHashMap.this.size(); BooleanIterator iterator = source.booleanIterator(); while (iterator.hasNext()) { this.remove(iterator.next()); } return oldSize != ObjectBooleanHashMap.this.size(); } public boolean removeAll(boolean... source) { int oldSize = ObjectBooleanHashMap.this.size(); for (boolean item : source) { this.remove(item); } return oldSize != ObjectBooleanHashMap.this.size(); } public boolean retainAll(BooleanIterable source) { int oldSize = ObjectBooleanHashMap.this.size(); final BooleanSet sourceSet = source instanceof BooleanSet ? (BooleanSet) source : source.toSet(); ObjectBooleanHashMap retained = ObjectBooleanHashMap.this.select(new ObjectBooleanPredicate() { public boolean accept(K object, boolean value) { return sourceSet.contains(value); } }); if (retained.size() != oldSize) { ObjectBooleanHashMap.this.keys = retained.keys; ObjectBooleanHashMap.this.values = retained.values; ObjectBooleanHashMap.this.occupiedWithData = retained.occupiedWithData; ObjectBooleanHashMap.this.occupiedWithSentinels = retained.occupiedWithSentinels; return true; } return false; } public boolean retainAll(boolean... source) { return this.retainAll(BooleanHashSet.newSetWith(source)); } public void clear() { ObjectBooleanHashMap.this.clear(); } public MutableBooleanCollection with(boolean element) { throw new UnsupportedOperationException("Cannot call with() on " + this.getClass().getSimpleName()); } public MutableBooleanCollection without(boolean element) { throw new UnsupportedOperationException("Cannot call without() on " + this.getClass().getSimpleName()); } public MutableBooleanCollection withAll(BooleanIterable elements) { throw new UnsupportedOperationException("Cannot call withAll() on " + this.getClass().getSimpleName()); } public MutableBooleanCollection withoutAll(BooleanIterable elements) { throw new UnsupportedOperationException("Cannot call withoutAll() on " + this.getClass().getSimpleName()); } public MutableBooleanCollection asUnmodifiable() { return UnmodifiableBooleanCollection.of(this); } public MutableBooleanCollection asSynchronized() { return SynchronizedBooleanCollection.of(this); } public ImmutableBooleanCollection toImmutable() { return BooleanLists.immutable.withAll(this); } public MutableBooleanCollection select(BooleanPredicate predicate) { return ObjectBooleanHashMap.this.select(predicate); } public MutableBooleanCollection reject(BooleanPredicate predicate) { return ObjectBooleanHashMap.this.reject(predicate); } public MutableBooleanIterator booleanIterator() { return ObjectBooleanHashMap.this.booleanIterator(); } public boolean[] toArray() { return ObjectBooleanHashMap.this.toArray(); } public MutableCollection collect(BooleanToObjectFunction function) { return ObjectBooleanHashMap.this.collect(function); } public boolean contains(boolean value) { return ObjectBooleanHashMap.this.containsValue(value); } public boolean containsAll(boolean... source) { return ObjectBooleanHashMap.this.containsAll(source); } public boolean containsAll(BooleanIterable source) { return ObjectBooleanHashMap.this.containsAll(source); } public void forEach(BooleanProcedure procedure) { this.each(procedure); } public void each(BooleanProcedure procedure) { ObjectBooleanHashMap.this.forEach(procedure); } public boolean detectIfNone(BooleanPredicate predicate, boolean ifNone) { return ObjectBooleanHashMap.this.detectIfNone(predicate, ifNone); } public int count(BooleanPredicate predicate) { return ObjectBooleanHashMap.this.count(predicate); } public boolean anySatisfy(BooleanPredicate predicate) { return ObjectBooleanHashMap.this.anySatisfy(predicate); } public boolean allSatisfy(BooleanPredicate predicate) { return ObjectBooleanHashMap.this.allSatisfy(predicate); } public boolean noneSatisfy(BooleanPredicate predicate) { return ObjectBooleanHashMap.this.noneSatisfy(predicate); } public MutableBooleanList toList() { return ObjectBooleanHashMap.this.toList(); } public MutableBooleanSet toSet() { return ObjectBooleanHashMap.this.toSet(); } public MutableBooleanBag toBag() { return ObjectBooleanHashMap.this.toBag(); } public LazyBooleanIterable asLazy() { return new LazyBooleanIterableAdapter(this); } public T injectInto(T injectedValue, ObjectBooleanToObjectFunction function) { return ObjectBooleanHashMap.this.injectInto(injectedValue, function); } public int size() { return ObjectBooleanHashMap.this.size(); } public boolean isEmpty() { return ObjectBooleanHashMap.this.isEmpty(); } public boolean notEmpty() { return ObjectBooleanHashMap.this.notEmpty(); } public String makeString() { return this.makeString(", "); } public String makeString(String separator) { return this.makeString("", separator, ""); } public String makeString(String start, String separator, String end) { Appendable stringBuilder = new StringBuilder(); this.appendString(stringBuilder, start, separator, end); return stringBuilder.toString(); } public void appendString(Appendable appendable) { this.appendString(appendable, ", "); } public void appendString(Appendable appendable, String separator) { this.appendString(appendable, "", separator, ""); } public void appendString(Appendable appendable, String start, String separator, String end) { try { appendable.append(start); boolean first = true; for (int i = 0; i < ObjectBooleanHashMap.this.keys.length; i++) { Object key = ObjectBooleanHashMap.this.keys[i]; if (ObjectBooleanHashMap.isNonSentinel(key)) { if (!first) { appendable.append(separator); } appendable.append(String.valueOf(ObjectBooleanHashMap.this.values.get(i))); first = false; } } appendable.append(end); } catch (IOException e) { throw new RuntimeException(e); } } } private class InternalBooleanIterator implements MutableBooleanIterator { private int count; private int position; public boolean hasNext() { return this.count != ObjectBooleanHashMap.this.size(); } public boolean next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectBooleanHashMap.this.keys; while (!ObjectBooleanHashMap.isNonSentinel(keys[this.position])) { this.position++; } boolean result = ObjectBooleanHashMap.this.values.get(this.position); this.count++; this.position++; return result; } public void remove() { if (this.position == 0 || !ObjectBooleanHashMap.isNonSentinel(ObjectBooleanHashMap.this.keys[this.position - 1])) { throw new IllegalStateException(); } ObjectBooleanHashMap.this.remove(ObjectBooleanHashMap.this.keys[this.position - 1]); this.count--; } } private class KeysView extends AbstractLazyIterable { public void each(Procedure procedure) { ObjectBooleanHashMap.this.forEachKey(procedure); } @Override public void forEachWithIndex(ObjectIntProcedure objectIntProcedure) { int index = 0; for (int i = 0; i < ObjectBooleanHashMap.this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(ObjectBooleanHashMap.this.keys[i])) { objectIntProcedure.value(ObjectBooleanHashMap.this.toNonSentinel(ObjectBooleanHashMap.this.keys[i]), index); index++; } } } @Override public

void forEachWith(Procedure2 procedure, P parameter) { for (int i = 0; i < ObjectBooleanHashMap.this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(ObjectBooleanHashMap.this.keys[i])) { procedure.value(ObjectBooleanHashMap.this.toNonSentinel(ObjectBooleanHashMap.this.keys[i]), parameter); } } } public Iterator iterator() { return new InternalKeysViewIterator(); } public class InternalKeysViewIterator implements Iterator { private int count; private int position; public boolean hasNext() { return this.count != ObjectBooleanHashMap.this.size(); } public K next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectBooleanHashMap.this.keys; while (!ObjectBooleanHashMap.isNonSentinel(keys[this.position])) { this.position++; } K result = (K) ObjectBooleanHashMap.this.keys[this.position]; this.count++; this.position++; return result; } public void remove() { throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName()); } } } private class KeyValuesView extends AbstractLazyIterable> { public void each(Procedure> procedure) { for (int i = 0; i < ObjectBooleanHashMap.this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(ObjectBooleanHashMap.this.keys[i])) { procedure.value(PrimitiveTuples.pair(ObjectBooleanHashMap.this.toNonSentinel(ObjectBooleanHashMap.this.keys[i]), ObjectBooleanHashMap.this.values.get(i))); } } } @Override public void forEachWithIndex(ObjectIntProcedure> objectIntProcedure) { int index = 0; for (int i = 0; i < ObjectBooleanHashMap.this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(ObjectBooleanHashMap.this.keys[i])) { objectIntProcedure.value(PrimitiveTuples.pair(ObjectBooleanHashMap.this.toNonSentinel(ObjectBooleanHashMap.this.keys[i]), ObjectBooleanHashMap.this.values.get(i)), index); index++; } } } @Override public

void forEachWith(Procedure2, ? super P> procedure, P parameter) { for (int i = 0; i < ObjectBooleanHashMap.this.keys.length; i++) { if (ObjectBooleanHashMap.isNonSentinel(ObjectBooleanHashMap.this.keys[i])) { procedure.value(PrimitiveTuples.pair(ObjectBooleanHashMap.this.toNonSentinel(ObjectBooleanHashMap.this.keys[i]), ObjectBooleanHashMap.this.values.get(i)), parameter); } } } public Iterator> iterator() { return new InternalKeyValuesIterator(); } public class InternalKeyValuesIterator implements Iterator> { private int count; private int position; public boolean hasNext() { return this.count != ObjectBooleanHashMap.this.size(); } public ObjectBooleanPair next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectBooleanHashMap.this.keys; while (!ObjectBooleanHashMap.isNonSentinel(keys[this.position])) { this.position++; } ObjectBooleanPair result = PrimitiveTuples.pair(ObjectBooleanHashMap.this.toNonSentinel(ObjectBooleanHashMap.this.keys[this.position]), ObjectBooleanHashMap.this.values.get(this.position)); this.count++; this.position++; return result; } public void remove() { throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName()); } } } }





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