/*
 * Copyright (c) 2018 Goldman Sachs.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

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

Since:7.0.
/** * @since 7.0. */
public class ObjectBooleanHashMapWithHashingStrategy<K> implements MutableObjectBooleanMap<K>, Externalizable { public static final boolean EMPTY_VALUE = false; private static final long serialVersionUID = 1L;
Deprecated:in 5.1.0.
/** * @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 "ObjectBooleanHashMapWithHashingStrategyWithHashingStrategy.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 "ObjectBooleanHashMapWithHashingStrategy.REMOVED_KEY"; } }; private Object[] keys; private BitSet values; private int occupiedWithData; private int occupiedWithSentinels; private HashingStrategy<? super K> hashingStrategy;
Deprecated:No argument default constructor used for serialization. Instantiating an ObjectBooleanHashMapWithHashingStrategy with this constructor will have a null hashingStrategy and throw NullPointerException when used.
/** * @deprecated No argument default constructor used for serialization. Instantiating an ObjectBooleanHashMapWithHashingStrategy with * this constructor will have a null hashingStrategy and throw NullPointerException when used. */
@Deprecated public ObjectBooleanHashMapWithHashingStrategy() { } public ObjectBooleanHashMapWithHashingStrategy(HashingStrategy<? super K> hashingStrategy) { this.hashingStrategy = hashingStrategy; this.allocateTable(DEFAULT_INITIAL_CAPACITY << 1); } public ObjectBooleanHashMapWithHashingStrategy(HashingStrategy<? super K> hashingStrategy, int initialCapacity) { if (initialCapacity < 0) { throw new IllegalArgumentException("initial capacity cannot be less than 0"); } this.hashingStrategy = hashingStrategy; int capacity = this.smallestPowerOfTwoGreaterThan(this.fastCeil(initialCapacity * OCCUPIED_DATA_RATIO)); this.allocateTable(capacity); } public ObjectBooleanHashMapWithHashingStrategy(HashingStrategy<? super K> hashingStrategy, ObjectBooleanMap<? extends K> map) { this(hashingStrategy, Math.max(map.size(), DEFAULT_INITIAL_CAPACITY)); this.putAll(map); } public static <K> ObjectBooleanHashMapWithHashingStrategy<K> newMap(HashingStrategy<? super K> hashingStrategy) { return new ObjectBooleanHashMapWithHashingStrategy<>(hashingStrategy); } public static <K> ObjectBooleanHashMapWithHashingStrategy<K> newMap(HashingStrategy<? super K> hashingStrategy, ObjectBooleanMap<K> map) { return new ObjectBooleanHashMapWithHashingStrategy<>(hashingStrategy, map); } public static <K> ObjectBooleanHashMapWithHashingStrategy<K> newMap(ObjectBooleanHashMapWithHashingStrategy<K> map) { //noinspection rawtypes return new ObjectBooleanHashMapWithHashingStrategy<>(map.hashingStrategy, map); } public static <K> ObjectBooleanHashMapWithHashingStrategy<K> newWithKeysValues(HashingStrategy<? super K> hashingStrategy, K key, boolean value) { return new ObjectBooleanHashMapWithHashingStrategy<K>(hashingStrategy, 1).withKeyValue(key, value); } public static <K> ObjectBooleanHashMapWithHashingStrategy<K> newWithKeysValues(HashingStrategy<? super K> hashingStrategy, K key1, boolean value1, K key2, boolean value2) { return new ObjectBooleanHashMapWithHashingStrategy<K>(hashingStrategy, 2).withKeysValues(key1, value1, key2, value2); } public static <K> ObjectBooleanHashMapWithHashingStrategy<K> newWithKeysValues(HashingStrategy<? super K> hashingStrategy, K key1, boolean value1, K key2, boolean value2, K key3, boolean value3) { return new ObjectBooleanHashMapWithHashingStrategy<K>(hashingStrategy, 3).withKeysValues(key1, value1, key2, value2, key3, value3); } public static <K> ObjectBooleanHashMapWithHashingStrategy<K> newWithKeysValues(HashingStrategy<? super K> hashingStrategy, K key1, boolean value1, K key2, boolean value2, K key3, boolean value3, K key4, boolean value4) { return new ObjectBooleanHashMapWithHashingStrategy<K>(hashingStrategy, 4).withKeysValues(key1, value1, key2, value2, key3, value3, key4, value4); } 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; } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof ObjectBooleanMap)) { return false; } ObjectBooleanMap<K> other = (ObjectBooleanMap<K>) obj; if (this.size() != other.size()) { return false; } for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.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 (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { result += this.hashingStrategy.computeHashCode(this.toNonSentinel(this.keys[i])) ^ (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 (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(key)) { if (!first) { appendable.append(", "); } appendable.append(this.toNonSentinel(key)).append("=").append(this.values.get(i)); first = false; } } appendable.append("}"); return appendable.toString(); } @Override public int size() { return this.occupiedWithData; } @Override public boolean isEmpty() { return this.size() == 0; } @Override public boolean notEmpty() { return this.size() != 0; } @Override public String makeString() { return this.makeString(", "); } @Override public String makeString(String separator) { return this.makeString("", separator, ""); } @Override public String makeString(String start, String separator, String end) { Appendable stringBuilder = new StringBuilder(); this.appendString(stringBuilder, start, separator, end); return stringBuilder.toString(); } @Override public void appendString(Appendable appendable) { this.appendString(appendable, ", "); } @Override public void appendString(Appendable appendable, String separator) { this.appendString(appendable, "", separator, ""); } @Override 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 (ObjectBooleanHashMapWithHashingStrategy.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); } } @Override public MutableBooleanIterator booleanIterator() { return new InternalBooleanIterator(); } @Override public boolean[] toArray() { boolean[] result = new boolean[this.size()]; int index = 0; for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { result[index] = this.values.get(i); index++; } } return result; } @Override public boolean[] toArray(boolean[] result) { if (result.length < this.size()) { result = new boolean[this.size()]; } int index = 0; for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { result[index] = this.values.get(i); index++; } } return result; } @Override public boolean contains(boolean value) { return this.containsValue(value); } @Override public boolean containsAll(boolean... source) { for (boolean item : source) { if (!this.containsValue(item)) { return false; } } return true; } @Override public boolean containsAll(BooleanIterable source) { return this.containsAll(source.toArray()); } @Override public void forEach(BooleanProcedure procedure) { this.forEachValue(procedure); } @Override public void each(BooleanProcedure procedure) { this.forEach(procedure); } @Override public boolean detectIfNone(BooleanPredicate predicate, boolean ifNone) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i))) { return this.values.get(i); } } return ifNone; } @Override public MutableBooleanCollection select(BooleanPredicate predicate) { MutableBooleanList result = BooleanLists.mutable.empty(); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i))) { result.add(this.values.get(i)); } } return result; } @Override public int count(BooleanPredicate predicate) { int count = 0; for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i))) { count++; } } return count; } @Override public MutableBooleanCollection reject(BooleanPredicate predicate) { MutableBooleanList result = BooleanLists.mutable.empty(); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i]) && !predicate.accept(this.values.get(i))) { result.add(this.values.get(i)); } } return result; } @Override public boolean anySatisfy(BooleanPredicate predicate) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i))) { return true; } } return false; } @Override public boolean allSatisfy(BooleanPredicate predicate) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i]) && !predicate.accept(this.values.get(i))) { return false; } } return true; } @Override public <V> MutableCollection<V> collect(BooleanToObjectFunction<? extends V> function) { MutableList<V> result = FastList.newList(this.size()); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { result.add(function.valueOf(this.values.get(i))); } } return result; } @Override public boolean noneSatisfy(BooleanPredicate predicate) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i]) && predicate.accept(this.values.get(i))) { return false; } } return true; } @Override public MutableBooleanList toList() { MutableBooleanList result = new BooleanArrayList(this.size()); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { result.add(this.values.get(i)); } } return result; } @Override public MutableBooleanSet toSet() { MutableBooleanSet result = new BooleanHashSet(); for (int i = 0; result.size() < 2 && i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { result.add(this.values.get(i)); } } return result; } @Override public MutableBooleanBag toBag() { MutableBooleanBag result = new BooleanHashBag(); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { result.add(this.values.get(i)); } } return result; } @Override public LazyBooleanIterable asLazy() { return new LazyBooleanIterableAdapter(this); } @Override public <V> V injectInto(V injectedValue, ObjectBooleanToObjectFunction<? super V, ? extends V> function) { V result = injectedValue; for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { result = function.valueOf(result, this.values.get(i)); } } return result; } @Override public RichIterable<BooleanIterable> chunk(int size) { if (size <= 0) { throw new IllegalArgumentException("Size for groups must be positive but was: " + size); } MutableList<BooleanIterable> result = Lists.mutable.empty(); if (this.notEmpty()) { BooleanIterator iterator = this.booleanIterator(); while (iterator.hasNext()) { MutableBooleanBag batch = BooleanBags.mutable.empty(); for (int i = 0; i < size && iterator.hasNext(); i++) { batch.add(iterator.next()); } result.add(batch); } } return result; } @Override public void clear() { this.occupiedWithData = 0; this.occupiedWithSentinels = 0; Arrays.fill(this.keys, null); this.values.clear(); } @Override public void put(K key, boolean value) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { // key already present in map this.values.set(index, value); return; } this.addKeyValueAtIndex(key, value, index); } @Override public void putAll(ObjectBooleanMap<? extends K> map) { map.forEachKeyValue(this::put); } @Override public void updateValues(ObjectBooleanToBooleanFunction<? super K> function) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { this.values.set(i, function.valueOf(this.toNonSentinel(this.keys[i]), this.values.get(i))); } } } @Override public void removeKey(K key) { int index = this.probe(key); this.removeKeyAtIndex(key, index); } @Override public void remove(Object key) { this.removeKey((K) key); } private void removeKeyAtIndex(K key, int index) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { this.keys[index] = REMOVED_KEY; this.values.set(index, EMPTY_VALUE); this.occupiedWithData--; this.occupiedWithSentinels++; } } @Override public boolean removeKeyIfAbsent(K key, boolean value) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.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; } @Override public boolean getIfAbsentPut(K key, boolean value) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values.get(index); } this.addKeyValueAtIndex(key, value, index); return value; } @Override public boolean getIfAbsentPut(K key, BooleanFunction0 function) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values.get(index); } boolean value = function.value(); this.addKeyValueAtIndex(key, value, index); return value; } @Override public boolean getIfAbsentPutWithKey(K key, BooleanFunction<? super K> function) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values.get(index); } boolean value = function.booleanValueOf(key); this.addKeyValueAtIndex(key, value, index); return value; } @Override public <P> boolean getIfAbsentPutWith(K key, BooleanFunction<? super P> function, P parameter) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values.get(index); } boolean value = function.booleanValueOf(parameter); this.addKeyValueAtIndex(key, value, index); return value; } @Override public boolean updateValue(K key, boolean initialValueIfAbsent, BooleanToBooleanFunction function) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.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; } @Override public ObjectBooleanHashMapWithHashingStrategy<K> withKeyValue(K key1, boolean value1) { this.put(key1, value1); return this; } @Override public ObjectBooleanHashMapWithHashingStrategy<K> withoutKey(K key) { this.removeKey(key); return this; } @Override public ObjectBooleanHashMapWithHashingStrategy<K> withoutAllKeys(Iterable<? extends K> keys) { for (K key : keys) { this.removeKey(key); } return this; } @Override public MutableObjectBooleanMap<K> asUnmodifiable() { return new UnmodifiableObjectBooleanMap<>(this); } @Override public MutableObjectBooleanMap<K> asSynchronized() { return new SynchronizedObjectBooleanMap<>(this); } @Override public boolean get(Object key) { return this.getIfAbsent(key, EMPTY_VALUE); } @Override public boolean getOrThrow(Object key) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index])) { return this.values.get(index); } throw new IllegalStateException("Key " + key + " not present."); } @Override public boolean getIfAbsent(Object key, boolean ifAbsent) { int index = this.probe(key); if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values.get(index); } return ifAbsent; } @Override public boolean containsKey(Object key) { int index = this.probe(key); return ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[index]) && this.nullSafeEquals(this.toNonSentinel(this.keys[index]), key); } @Override public boolean containsValue(boolean value) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i]) && this.values.get(i) == value) { return true; } } return false; } @Override public void forEachValue(BooleanProcedure procedure) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { procedure.value(this.values.get(i)); } } } @Override public void forEachKey(Procedure<? super K> procedure) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { procedure.value(this.toNonSentinel(this.keys[i])); } } } @Override public void forEachKeyValue(ObjectBooleanProcedure<? super K> procedure) { for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { procedure.value(this.toNonSentinel(this.keys[i]), this.values.get(i)); } } } @Override public ObjectBooleanHashMapWithHashingStrategy<K> select(ObjectBooleanPredicate<? super K> predicate) { ObjectBooleanHashMapWithHashingStrategy<K> result = ObjectBooleanHashMapWithHashingStrategy.newMap(this.hashingStrategy); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.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; } @Override public ObjectBooleanHashMapWithHashingStrategy<K> reject(ObjectBooleanPredicate<? super K> predicate) { ObjectBooleanHashMapWithHashingStrategy<K> result = ObjectBooleanHashMapWithHashingStrategy.newMap(this.hashingStrategy); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.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; } @Override public ImmutableObjectBooleanMap<K> toImmutable() { return ObjectBooleanMaps.immutable.withAll(this); } @Override public Set<K> keySet() { return new KeySet(); } @Override public MutableBooleanCollection values() { return new ValuesCollection(); } @Override public LazyIterable<K> keysView() { return new KeysView(); } @Override public RichIterable<ObjectBooleanPair<K>> keyValuesView() { return new KeyValuesView(); } @Override public void writeExternal(ObjectOutput out) throws IOException { out.writeObject(this.hashingStrategy); out.writeInt(this.size()); for (int i = 0; i < this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.keys[i])) { out.writeObject(this.toNonSentinel(this.keys[i])); out.writeBoolean(this.values.get(i)); } } } @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { this.hashingStrategy = (HashingStrategy<? super K>) in.readObject(); int size = in.readInt(); 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 (ObjectBooleanHashMapWithHashingStrategy.isRemovedKey(this.keys[index])) { removedIndex = index; } else if (this.keys[index] == null || this.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 (ObjectBooleanHashMapWithHashingStrategy.isRemovedKey(this.keys[nextIndex])) { if (removedIndex == -1) { removedIndex = nextIndex; } } else if (this.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 boolean nullSafeEquals(K key, Object other) { if (key == null) { if (other == null) { return true; } } else if (key != NULL_KEY && other != null) { if (this.hashingStrategy.equals(key, this.toNonSentinel(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). K nonSentinelKey = this.toNonSentinel(element); int h = nonSentinelKey == null ? 0 : this.hashingStrategy.computeHashCode(nonSentinelKey); 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] = ObjectBooleanHashMapWithHashingStrategy.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 (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(old[i])) { this.put(this.toNonSentinel(old[i]), oldValues.get(i)); } } } protected void allocateTable(int sizeToAllocate) { this.keys = new Object[sizeToAllocate]; this.values = new BitSet(sizeToAllocate); } private static <K> boolean isNonSentinel(K key) { return key != null && !ObjectBooleanHashMapWithHashingStrategy.isRemovedKey(key); } private int maxOccupiedWithSentinels() { return this.keys.length / OCCUPIED_SENTINEL_RATIO; } public ObjectBooleanHashMapWithHashingStrategy<K> withKeysValues(K key1, boolean value1, K key2, boolean value2) { this.put(key1, value1); this.put(key2, value2); return this; } public ObjectBooleanHashMapWithHashingStrategy<K> 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 ObjectBooleanHashMapWithHashingStrategy<K> 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<K> { @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 = ObjectBooleanHashMapWithHashingStrategy.this.keys; for (int i = 0; i < table.length; i++) { Object key = table[i]; if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(key)) { K nonSentinelKey = ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(key); hashCode += nonSentinelKey == null ? 0 : ObjectBooleanHashMapWithHashingStrategy.this.hashingStrategy.computeHashCode(nonSentinelKey); } } return hashCode; } @Override public int size() { return ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public boolean isEmpty() { return ObjectBooleanHashMapWithHashingStrategy.this.isEmpty(); } @Override public boolean contains(Object o) { return ObjectBooleanHashMapWithHashingStrategy.this.containsKey(o); } @Override public Object[] toArray() { int size = ObjectBooleanHashMapWithHashingStrategy.this.size(); Object[] result = new Object[size]; this.copyKeys(result); return result; } @Override public <T> T[] toArray(T[] array) { T[] result = array; int size = ObjectBooleanHashMapWithHashingStrategy.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; } @Override public boolean add(K key) { throw new UnsupportedOperationException("Cannot call add() on " + this.getClass().getSimpleName()); } @Override public boolean remove(Object key) { int oldSize = ObjectBooleanHashMapWithHashingStrategy.this.size(); ObjectBooleanHashMapWithHashingStrategy.this.removeKey((K) key); return oldSize != ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public boolean containsAll(Collection<?> collection) { for (Object aCollection : collection) { if (!ObjectBooleanHashMapWithHashingStrategy.this.containsKey(aCollection)) { return false; } } return true; } @Override public boolean addAll(Collection<? extends K> collection) { throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName()); } @Override public boolean retainAll(Collection<?> collection) { int oldSize = ObjectBooleanHashMapWithHashingStrategy.this.size(); Iterator<K> iterator = this.iterator(); while (iterator.hasNext()) { K next = iterator.next(); if (!collection.contains(next)) { iterator.remove(); } } return oldSize != ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public boolean removeAll(Collection<?> collection) { int oldSize = ObjectBooleanHashMapWithHashingStrategy.this.size(); for (Object object : collection) { ObjectBooleanHashMapWithHashingStrategy.this.removeKey((K) object); } return oldSize != ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public void clear() { ObjectBooleanHashMapWithHashingStrategy.this.clear(); } @Override public Iterator<K> iterator() { return new KeySetIterator(); } private void copyKeys(Object[] result) { int count = 0; for (int i = 0; i < ObjectBooleanHashMapWithHashingStrategy.this.keys.length; i++) { Object key = ObjectBooleanHashMapWithHashingStrategy.this.keys[i]; if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(key)) { result[count++] = ObjectBooleanHashMapWithHashingStrategy.this.keys[i]; } } } } private class KeySetIterator implements Iterator<K> { private int count; private int position; private K currentKey; private boolean isCurrentKeySet; @Override public boolean hasNext() { return this.count < ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public K next() { if (!this.hasNext()) { throw new NoSuchElementException(); } this.count++; Object[] keys = ObjectBooleanHashMapWithHashingStrategy.this.keys; while (!ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(keys[this.position])) { this.position++; } this.currentKey = (K) ObjectBooleanHashMapWithHashingStrategy.this.keys[this.position]; this.isCurrentKeySet = true; this.position++; return ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(this.currentKey); } @Override public void remove() { if (!this.isCurrentKeySet) { throw new IllegalStateException(); } this.isCurrentKeySet = false; this.count--; if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(this.currentKey)) { int index = this.position - 1; ObjectBooleanHashMapWithHashingStrategy.this.removeKeyAtIndex(ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(this.currentKey), index); } else { ObjectBooleanHashMapWithHashingStrategy.this.removeKey(this.currentKey); } } } private class ValuesCollection implements MutableBooleanCollection { @Override public boolean add(boolean element) { throw new UnsupportedOperationException("Cannot call add() on " + this.getClass().getSimpleName()); } @Override public boolean addAll(boolean... source) { throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName()); } @Override public boolean addAll(BooleanIterable source) { throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName()); } @Override public boolean remove(boolean element) { for (int i = 0; i < ObjectBooleanHashMapWithHashingStrategy.this.values.size(); i++) { if (ObjectBooleanHashMapWithHashingStrategy.this.values.get(i) == element && ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i])) { ObjectBooleanHashMapWithHashingStrategy.this.removeKey(ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i])); return true; } } return false; } @Override public boolean removeAll(BooleanIterable source) { int oldSize = ObjectBooleanHashMapWithHashingStrategy.this.size(); BooleanIterator iterator = source.booleanIterator(); while (iterator.hasNext()) { this.remove(iterator.next()); } return oldSize != ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public boolean removeAll(boolean... source) { int oldSize = ObjectBooleanHashMapWithHashingStrategy.this.size(); for (boolean item : source) { this.remove(item); } return oldSize != ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public boolean retainAll(BooleanIterable source) { int oldSize = ObjectBooleanHashMapWithHashingStrategy.this.size(); BooleanSet sourceSet = source instanceof BooleanSet ? (BooleanSet) source : source.toSet(); ObjectBooleanHashMapWithHashingStrategy<K> retained = ObjectBooleanHashMapWithHashingStrategy.this.select((object, value) -> sourceSet.contains(value)); if (retained.size() != oldSize) { ObjectBooleanHashMapWithHashingStrategy.this.keys = retained.keys; ObjectBooleanHashMapWithHashingStrategy.this.values = retained.values; ObjectBooleanHashMapWithHashingStrategy.this.occupiedWithData = retained.occupiedWithData; ObjectBooleanHashMapWithHashingStrategy.this.occupiedWithSentinels = retained.occupiedWithSentinels; return true; } return false; } @Override public boolean retainAll(boolean... source) { return this.retainAll(BooleanHashSet.newSetWith(source)); } @Override public void clear() { ObjectBooleanHashMapWithHashingStrategy.this.clear(); } @Override public MutableBooleanCollection with(boolean element) { throw new UnsupportedOperationException("Cannot call with() on " + this.getClass().getSimpleName()); } @Override public MutableBooleanCollection without(boolean element) { throw new UnsupportedOperationException("Cannot call without() on " + this.getClass().getSimpleName()); } @Override public MutableBooleanCollection withAll(BooleanIterable elements) { throw new UnsupportedOperationException("Cannot call withAll() on " + this.getClass().getSimpleName()); } @Override public MutableBooleanCollection withoutAll(BooleanIterable elements) { throw new UnsupportedOperationException("Cannot call withoutAll() on " + this.getClass().getSimpleName()); } @Override public MutableBooleanCollection asUnmodifiable() { return UnmodifiableBooleanCollection.of(this); } @Override public MutableBooleanCollection asSynchronized() { return SynchronizedBooleanCollection.of(this); } @Override public ImmutableBooleanCollection toImmutable() { return BooleanLists.immutable.withAll(this); } @Override public MutableBooleanCollection select(BooleanPredicate predicate) { return ObjectBooleanHashMapWithHashingStrategy.this.select(predicate); } @Override public MutableBooleanCollection reject(BooleanPredicate predicate) { return ObjectBooleanHashMapWithHashingStrategy.this.reject(predicate); } @Override public MutableBooleanIterator booleanIterator() { return ObjectBooleanHashMapWithHashingStrategy.this.booleanIterator(); } @Override public boolean[] toArray() { return ObjectBooleanHashMapWithHashingStrategy.this.toArray(); } @Override public boolean[] toArray(boolean[] target) { return ObjectBooleanHashMapWithHashingStrategy.this.toArray(target); } @Override public <V> MutableCollection<V> collect(BooleanToObjectFunction<? extends V> function) { return ObjectBooleanHashMapWithHashingStrategy.this.collect(function); } @Override public boolean contains(boolean value) { return ObjectBooleanHashMapWithHashingStrategy.this.containsValue(value); } @Override public boolean containsAll(boolean... source) { return ObjectBooleanHashMapWithHashingStrategy.this.containsAll(source); } @Override public boolean containsAll(BooleanIterable source) { return ObjectBooleanHashMapWithHashingStrategy.this.containsAll(source); } @Override public void forEach(BooleanProcedure procedure) { ObjectBooleanHashMapWithHashingStrategy.this.forEach(procedure); } @Override public void each(BooleanProcedure procedure) { ObjectBooleanHashMapWithHashingStrategy.this.forEach(procedure); } @Override public boolean detectIfNone(BooleanPredicate predicate, boolean ifNone) { return ObjectBooleanHashMapWithHashingStrategy.this.detectIfNone(predicate, ifNone); } @Override public int count(BooleanPredicate predicate) { return ObjectBooleanHashMapWithHashingStrategy.this.count(predicate); } @Override public boolean anySatisfy(BooleanPredicate predicate) { return ObjectBooleanHashMapWithHashingStrategy.this.anySatisfy(predicate); } @Override public boolean allSatisfy(BooleanPredicate predicate) { return ObjectBooleanHashMapWithHashingStrategy.this.allSatisfy(predicate); } @Override public boolean noneSatisfy(BooleanPredicate predicate) { return ObjectBooleanHashMapWithHashingStrategy.this.noneSatisfy(predicate); } @Override public MutableBooleanList toList() { return ObjectBooleanHashMapWithHashingStrategy.this.toList(); } @Override public MutableBooleanSet toSet() { return ObjectBooleanHashMapWithHashingStrategy.this.toSet(); } @Override public MutableBooleanBag toBag() { return ObjectBooleanHashMapWithHashingStrategy.this.toBag(); } @Override public LazyBooleanIterable asLazy() { return new LazyBooleanIterableAdapter(this); } @Override public <T> T injectInto(T injectedValue, ObjectBooleanToObjectFunction<? super T, ? extends T> function) { return ObjectBooleanHashMapWithHashingStrategy.this.injectInto(injectedValue, function); } @Override public RichIterable<BooleanIterable> chunk(int size) { return ObjectBooleanHashMapWithHashingStrategy.this.chunk(size); } @Override public int size() { return ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public boolean isEmpty() { return ObjectBooleanHashMapWithHashingStrategy.this.isEmpty(); } @Override public boolean notEmpty() { return ObjectBooleanHashMapWithHashingStrategy.this.notEmpty(); } @Override public String makeString() { return this.makeString(", "); } @Override public String makeString(String separator) { return this.makeString("", separator, ""); } @Override public String makeString(String start, String separator, String end) { Appendable stringBuilder = new StringBuilder(); this.appendString(stringBuilder, start, separator, end); return stringBuilder.toString(); } @Override public void appendString(Appendable appendable) { this.appendString(appendable, ", "); } @Override public void appendString(Appendable appendable, String separator) { this.appendString(appendable, "", separator, ""); } @Override public void appendString(Appendable appendable, String start, String separator, String end) { try { appendable.append(start); boolean first = true; for (int i = 0; i < ObjectBooleanHashMapWithHashingStrategy.this.keys.length; i++) { Object key = ObjectBooleanHashMapWithHashingStrategy.this.keys[i]; if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(key)) { if (!first) { appendable.append(separator); } appendable.append(String.valueOf(ObjectBooleanHashMapWithHashingStrategy.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; @Override public boolean hasNext() { return this.count != ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public boolean next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectBooleanHashMapWithHashingStrategy.this.keys; while (!ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(keys[this.position])) { this.position++; } boolean result = ObjectBooleanHashMapWithHashingStrategy.this.values.get(this.position); this.count++; this.position++; return result; } @Override public void remove() { if (this.position == 0 || !ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[this.position - 1])) { throw new IllegalStateException(); } ObjectBooleanHashMapWithHashingStrategy.this.remove(ObjectBooleanHashMapWithHashingStrategy.this.keys[this.position - 1]); this.count--; } } private class KeysView extends AbstractLazyIterable<K> { @Override public void each(Procedure<? super K> procedure) { ObjectBooleanHashMapWithHashingStrategy.this.forEachKey(procedure); } @Override public void forEachWithIndex(ObjectIntProcedure<? super K> objectIntProcedure) { int index = 0; for (int i = 0; i < ObjectBooleanHashMapWithHashingStrategy.this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i])) { objectIntProcedure.value(ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i]), index); index++; } } } @Override public <P> void forEachWith(Procedure2<? super K, ? super P> procedure, P parameter) { for (int i = 0; i < ObjectBooleanHashMapWithHashingStrategy.this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i])) { procedure.value(ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i]), parameter); } } } @Override public Iterator<K> iterator() { return new InternalKeysViewIterator<>(); } public class InternalKeysViewIterator<K> implements Iterator<K> { private int count; private int position; @Override public boolean hasNext() { return this.count != ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public K next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectBooleanHashMapWithHashingStrategy.this.keys; while (!ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(keys[this.position])) { this.position++; } K result = (K) ObjectBooleanHashMapWithHashingStrategy.this.keys[this.position]; this.count++; this.position++; return result; } @Override public void remove() { throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName()); } } } private class KeyValuesView extends AbstractLazyIterable<ObjectBooleanPair<K>> { @Override public void each(Procedure<? super ObjectBooleanPair<K>> procedure) { for (int i = 0; i < ObjectBooleanHashMapWithHashingStrategy.this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i])) { procedure.value(PrimitiveTuples.pair(ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i]), ObjectBooleanHashMapWithHashingStrategy.this.values.get(i))); } } } @Override public void forEachWithIndex(ObjectIntProcedure<? super ObjectBooleanPair<K>> objectIntProcedure) { int index = 0; for (int i = 0; i < ObjectBooleanHashMapWithHashingStrategy.this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i])) { objectIntProcedure.value(PrimitiveTuples.pair(ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i]), ObjectBooleanHashMapWithHashingStrategy.this.values.get(i)), index); index++; } } } @Override public <P> void forEachWith(Procedure2<? super ObjectBooleanPair<K>, ? super P> procedure, P parameter) { for (int i = 0; i < ObjectBooleanHashMapWithHashingStrategy.this.keys.length; i++) { if (ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i])) { procedure.value(PrimitiveTuples.pair(ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[i]), ObjectBooleanHashMapWithHashingStrategy.this.values.get(i)), parameter); } } } @Override public Iterator<ObjectBooleanPair<K>> iterator() { return new InternalKeyValuesIterator(); } public class InternalKeyValuesIterator implements Iterator<ObjectBooleanPair<K>> { private int count; private int position; @Override public boolean hasNext() { return this.count != ObjectBooleanHashMapWithHashingStrategy.this.size(); } @Override public ObjectBooleanPair<K> next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectBooleanHashMapWithHashingStrategy.this.keys; while (!ObjectBooleanHashMapWithHashingStrategy.isNonSentinel(keys[this.position])) { this.position++; } ObjectBooleanPair<K> result = PrimitiveTuples.pair(ObjectBooleanHashMapWithHashingStrategy.this.toNonSentinel(ObjectBooleanHashMapWithHashingStrategy.this.keys[this.position]), ObjectBooleanHashMapWithHashingStrategy.this.values.get(this.position)); this.count++; this.position++; return result; } @Override public void remove() { throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName()); } } } }