/*
 * Copyright (c) 2018 Goldman Sachs and others.
 * 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.Collection;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Set;

import org.eclipse.collections.api.ShortIterable;
import org.eclipse.collections.api.LazyShortIterable;
import org.eclipse.collections.api.LazyIterable;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.bag.primitive.MutableShortBag;
import org.eclipse.collections.api.block.function.primitive.ShortFunction;
import org.eclipse.collections.api.block.function.primitive.ShortFunction0;
import org.eclipse.collections.api.block.function.primitive.ShortToShortFunction;
import org.eclipse.collections.api.block.function.primitive.ShortToObjectFunction;
import org.eclipse.collections.api.block.function.primitive.ObjectShortToShortFunction;
import org.eclipse.collections.api.block.function.primitive.ObjectShortToObjectFunction;
import org.eclipse.collections.api.block.predicate.primitive.ShortPredicate;
import org.eclipse.collections.api.block.predicate.primitive.ObjectShortPredicate;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.block.procedure.Procedure2;
import org.eclipse.collections.api.block.procedure.primitive.ShortProcedure;
import org.eclipse.collections.api.block.procedure.primitive.ObjectShortProcedure;
import org.eclipse.collections.api.collection.MutableCollection;
import org.eclipse.collections.api.collection.primitive.ImmutableShortCollection;
import org.eclipse.collections.api.collection.primitive.MutableShortCollection;
import org.eclipse.collections.api.iterator.ShortIterator;
import org.eclipse.collections.api.iterator.MutableShortIterator;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.api.list.primitive.MutableShortList;
import org.eclipse.collections.api.map.primitive.ImmutableObjectShortMap;
import org.eclipse.collections.api.map.primitive.MutableObjectShortMap;
import org.eclipse.collections.api.map.primitive.MutableShortObjectMap;
import org.eclipse.collections.api.map.primitive.ObjectShortMap;
import org.eclipse.collections.api.set.primitive.ShortSet;
import org.eclipse.collections.api.set.primitive.MutableShortSet;
import org.eclipse.collections.api.tuple.primitive.ObjectShortPair;
import org.eclipse.collections.impl.bag.mutable.primitive.ShortHashBag;
import org.eclipse.collections.impl.collection.mutable.primitive.SynchronizedShortCollection;
import org.eclipse.collections.impl.collection.mutable.primitive.UnmodifiableShortCollection;
import org.eclipse.collections.impl.factory.Lists;
import org.eclipse.collections.impl.lazy.AbstractLazyIterable;
import org.eclipse.collections.impl.factory.primitive.ShortBags;
import org.eclipse.collections.impl.factory.primitive.ShortLists;
import org.eclipse.collections.impl.factory.primitive.ObjectShortMaps;
import org.eclipse.collections.impl.factory.primitive.ShortObjectMaps;
import org.eclipse.collections.impl.lazy.primitive.LazyShortIterableAdapter;
import org.eclipse.collections.impl.list.mutable.FastList;
import org.eclipse.collections.impl.list.mutable.primitive.ShortArrayList;
import org.eclipse.collections.impl.set.mutable.primitive.ShortHashSet;
import org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure;
import org.eclipse.collections.impl.tuple.primitive.PrimitiveTuples;

This file was automatically generated from template file objectPrimitiveHashMap.stg.
Since:3.0.
/** * This file was automatically generated from template file objectPrimitiveHashMap.stg. * * @since 3.0. */
public class ObjectShortHashMap<K> implements MutableObjectShortMap<K>, Externalizable { public static final short EMPTY_VALUE = (short) 0; private static final long serialVersionUID = 1L; 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 "ObjectShortHashMap.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 "ObjectShortHashMap.REMOVED_KEY"; } }; private Object[] keys; private short[] values; private int occupiedWithData; private int occupiedWithSentinels; public ObjectShortHashMap() { this.allocateTable(DEFAULT_INITIAL_CAPACITY << 1); } public ObjectShortHashMap(int initialCapacity) { if (initialCapacity < 0) { throw new IllegalArgumentException("initial capacity cannot be less than 0"); } int capacity = this.smallestPowerOfTwoGreaterThan(this.fastCeil(initialCapacity << 1)); this.allocateTable(capacity); } public ObjectShortHashMap(ObjectShortMap<? extends K> map) { this(Math.max(map.size(), DEFAULT_INITIAL_CAPACITY)); this.putAll(map); } public static <K> ObjectShortHashMap<K> newMap() { return new ObjectShortHashMap<>(); } public static <K> ObjectShortHashMap<K> newWithKeysValues(K key1, short value1) { return new ObjectShortHashMap<K>(1).withKeyValue(key1, value1); } public static <K> ObjectShortHashMap<K> newWithKeysValues(K key1, short value1, K key2, short value2) { return new ObjectShortHashMap<K>(2).withKeysValues(key1, value1, key2, value2); } public static <K> ObjectShortHashMap<K> newWithKeysValues(K key1, short value1, K key2, short value2, K key3, short value3) { return new ObjectShortHashMap<K>(3).withKeysValues(key1, value1, key2, value2, key3, value3); } public static <K> ObjectShortHashMap<K> newWithKeysValues(K key1, short value1, K key2, short value2, K key3, short value3, K key4, short value4) { return new ObjectShortHashMap<K>(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 ObjectShortMap)) { return false; } ObjectShortMap<K> other = (ObjectShortMap<K>) obj; if (this.size() != other.size()) { return false; } for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && (!other.containsKey(this.toNonSentinel(this.keys[i])) || this.values[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 (isNonSentinel(this.keys[i])) { result += (this.toNonSentinel(this.keys[i]) == null ? 0 : this.keys[i].hashCode()) ^ (int) this.values[i]; } } 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 (isNonSentinel(key)) { if (!first) { appendable.append(", "); } appendable.append(this.toNonSentinel(key)).append("=").append(this.values[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 (isNonSentinel(key)) { if (!first) { appendable.append(separator); } appendable.append(String.valueOf(String.valueOf(this.values[i]))); first = false; } } appendable.append(end); } catch (IOException e) { throw new RuntimeException(e); } } @Override public MutableShortIterator shortIterator() { return new InternalShortIterator(); } @Override public short[] toArray() { short[] result = new short[this.size()]; int index = 0; for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result[index] = this.values[i]; index++; } } return result; } @Override public boolean contains(short value) { return this.containsValue(value); } @Override public boolean containsAll(short... source) { for (short item : source) { if (!this.containsValue(item)) { return false; } } return true; } @Override public boolean containsAll(ShortIterable source) { return this.containsAll(source.toArray()); } @Override public void clear() { this.occupiedWithData = 0; this.occupiedWithSentinels = 0; Arrays.fill(this.keys, null); Arrays.fill(this.values, EMPTY_VALUE); } @Override public void put(K key, short value) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { // key already present in map this.values[index] = value; return; } this.addKeyValueAtIndex(key, value, index); } @Override public void putAll(ObjectShortMap<? extends K> map) { map.forEachKeyValue(this::put); } @Override public void updateValues(ObjectShortToShortFunction<? super K> function) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { this.values[i] = function.valueOf(this.toNonSentinel(this.keys[i]), this.values[i]); } } } @Override 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[index] = EMPTY_VALUE; this.occupiedWithData--; this.occupiedWithSentinels++; } } @Override public void remove(Object key) { this.removeKey((K) key); } @Override public short removeKeyIfAbsent(K key, short value) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { this.keys[index] = REMOVED_KEY; short oldValue = this.values[index]; this.values[index] = EMPTY_VALUE; this.occupiedWithData--; this.occupiedWithSentinels++; return oldValue; } return value; } @Override public short getIfAbsentPut(K key, short value) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values[index]; } this.addKeyValueAtIndex(key, value, index); return value; } @Override public short getIfAbsentPut(K key, ShortFunction0 function) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values[index]; } short value = function.value(); this.addKeyValueAtIndex(key, value, index); return value; } @Override public <P> short getIfAbsentPutWith(K key, ShortFunction<? super P> function, P parameter) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values[index]; } short value = function.shortValueOf(parameter); this.addKeyValueAtIndex(key, value, index); return value; } @Override public short getIfAbsentPutWithKey(K key, ShortFunction<? super K> function) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values[index]; } short value = function.shortValueOf(key); this.addKeyValueAtIndex(key, value, index); return value; } @Override public short updateValue(K key, short initialValueIfAbsent, ShortToShortFunction function) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { this.values[index] = function.valueOf(this.values[index]); return this.values[index]; } short value = function.valueOf(initialValueIfAbsent); this.addKeyValueAtIndex(key, value, index); return value; } private void addKeyValueAtIndex(K key, short value, int index) { if (this.keys[index] == REMOVED_KEY) { --this.occupiedWithSentinels; } this.keys[index] = toSentinelIfNull(key); this.values[index] = value; ++this.occupiedWithData; if (this.occupiedWithData + this.occupiedWithSentinels > this.maxOccupiedWithData()) { this.rehashAndGrow(); } } @Override public short addToValue(K key, short toBeAdded) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { this.values[index] += toBeAdded; return this.values[index]; } this.addKeyValueAtIndex(key, toBeAdded, index); return toBeAdded; } @Override public ObjectShortHashMap<K> withKeyValue(K key1, short value1) { this.put(key1, value1); return this; } public ObjectShortHashMap<K> withKeysValues(K key1, short value1, K key2, short value2) { this.put(key1, value1); this.put(key2, value2); return this; } public ObjectShortHashMap<K> withKeysValues(K key1, short value1, K key2, short value2, K key3, short value3) { this.put(key1, value1); this.put(key2, value2); this.put(key3, value3); return this; } public ObjectShortHashMap<K> withKeysValues(K key1, short value1, K key2, short value2, K key3, short value3, K key4, short value4) { this.put(key1, value1); this.put(key2, value2); this.put(key3, value3); this.put(key4, value4); return this; } @Override public ObjectShortHashMap<K> withoutKey(K key) { this.removeKey(key); return this; } @Override public ObjectShortHashMap<K> withoutAllKeys(Iterable<? extends K> keys) { for (K key : keys) { this.removeKey(key); } return this; } @Override public MutableObjectShortMap<K> asUnmodifiable() { return new UnmodifiableObjectShortMap<>(this); } @Override public MutableObjectShortMap<K> asSynchronized() { return new SynchronizedObjectShortMap<>(this); } @Override public ImmutableObjectShortMap<K> toImmutable() { return ObjectShortMaps.immutable.withAll(this); } @Override public short get(Object key) { return this.getIfAbsent(key, EMPTY_VALUE); } @Override public short getOrThrow(Object key) { int index = this.probe(key); if (isNonSentinel(this.keys[index])) { return this.values[index]; } throw new IllegalStateException("Key " + key + " not present."); } @Override public short getIfAbsent(Object key, short ifAbsent) { int index = this.probe(key); if (isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key)) { return this.values[index]; } return ifAbsent; } @Override public boolean containsKey(Object key) { int index = this.probe(key); return isNonSentinel(this.keys[index]) && nullSafeEquals(this.toNonSentinel(this.keys[index]), key); } @Override public boolean containsValue(short value) { for (int i = 0; i < this.values.length; i++) { if (isNonSentinel(this.keys[i]) && this.values[i] == value) { return true; } } return false; } @Override public void forEach(ShortProcedure procedure) { this.each(procedure); }
Since:7.0.
/** * @since 7.0. */
@Override public void each(ShortProcedure procedure) { this.forEachValue(procedure); } @Override public void forEachValue(ShortProcedure procedure) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { procedure.value(this.values[i]); } } } @Override public void forEachKey(Procedure<? super K> procedure) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { procedure.value(this.toNonSentinel(this.keys[i])); } } } @Override public void forEachKeyValue(ObjectShortProcedure<? super K> procedure) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { procedure.value(this.toNonSentinel(this.keys[i]), this.values[i]); } } } @Override public ObjectShortHashMap<K> select(ObjectShortPredicate<? super K> predicate) { ObjectShortHashMap<K> result = ObjectShortHashMap.newMap(); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.toNonSentinel(this.keys[i]), this.values[i])) { result.put(this.toNonSentinel(this.keys[i]), this.values[i]); } } return result; } @Override public ObjectShortHashMap<K> reject(ObjectShortPredicate<? super K> predicate) { ObjectShortHashMap<K> result = ObjectShortHashMap.newMap(); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && !predicate.accept(this.toNonSentinel(this.keys[i]), this.values[i])) { result.put(this.toNonSentinel(this.keys[i]), this.values[i]); } } return result; } @Override public MutableShortCollection select(ShortPredicate predicate) { ShortArrayList result = new ShortArrayList(); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.values[i])) { result.add(this.values[i]); } } return result; } @Override public MutableShortCollection reject(ShortPredicate predicate) { ShortArrayList result = new ShortArrayList(); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && !predicate.accept(this.values[i])) { result.add(this.values[i]); } } return result; } @Override public short detectIfNone(ShortPredicate predicate, short ifNone) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.values[i])) { return this.values[i]; } } return ifNone; } @Override public <V> MutableCollection<V> collect(ShortToObjectFunction<? extends V> function) { MutableList<V> result = FastList.newList(this.size()); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result.add(function.valueOf(this.values[i])); } } return result; } @Override public int count(ShortPredicate predicate) { int count = 0; for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.values[i])) { count++; } } return count; } @Override public boolean anySatisfy(ShortPredicate predicate) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.values[i])) { return true; } } return false; } @Override public boolean allSatisfy(ShortPredicate predicate) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && !predicate.accept(this.values[i])) { return false; } } return true; } @Override public boolean noneSatisfy(ShortPredicate predicate) { for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && predicate.accept(this.values[i])) { return false; } } return true; } @Override public <V> V injectInto(V injectedValue, ObjectShortToObjectFunction<? super V, ? extends V> function) { V result = injectedValue; for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result = function.valueOf(result, this.values[i]); } } return result; } @Override public RichIterable<ShortIterable> chunk(int size) { if (size <= 0) { throw new IllegalArgumentException("Size for groups must be positive but was: " + size); } MutableList<ShortIterable> result = Lists.mutable.empty(); if (this.notEmpty()) { ShortIterator iterator = this.shortIterator(); while (iterator.hasNext()) { MutableShortBag batch = ShortBags.mutable.empty(); for (int i = 0; i < size && iterator.hasNext(); i++) { batch.add(iterator.next()); } result.add(batch); } } return result; } @Override public long sum() { long result = 0L; for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result += this.values[i]; } } return result; } @Override public short max() { if (this.isEmpty()) { throw new NoSuchElementException(); } short max = (short) 0; boolean isMaxSet = false; for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && (!isMaxSet || max < this.values[i])) { max = this.values[i]; isMaxSet = true; } } return max; } @Override public short min() { if (this.isEmpty()) { throw new NoSuchElementException(); } short min = (short) 0; boolean isMinSet = false; for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && (!isMinSet || this.values[i] < min)) { min = this.values[i]; isMinSet = true; } } return min; } @Override public short maxIfEmpty(short defaultValue) { if (this.isEmpty()) { return defaultValue; } short max = (short) 0; boolean isMaxSet = false; for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && (!isMaxSet || max < this.values[i])) { max = this.values[i]; isMaxSet = true; } } return max; } @Override public short minIfEmpty(short defaultValue) { if (this.isEmpty()) { return defaultValue; } short min = (short) 0; boolean isMinSet = false; for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i]) && (!isMinSet || this.values[i] < min)) { min = this.values[i]; isMinSet = true; } } return min; } @Override public double average() { if (this.isEmpty()) { throw new ArithmeticException(); } return (double) this.sum() / (double) this.size(); } @Override public double median() { if (this.isEmpty()) { throw new ArithmeticException(); } short[] sortedArray = this.toSortedArray(); int middleIndex = sortedArray.length >> 1; if (sortedArray.length > 1 && (sortedArray.length & 1) == 0) { short first = sortedArray[middleIndex]; short second = sortedArray[middleIndex - 1]; return ((double) first + (double) second) / 2.0; } return (double) sortedArray[middleIndex]; } @Override public MutableShortList toList() { MutableShortList result = new ShortArrayList(this.size()); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result.add(this.values[i]); } } return result; } @Override public MutableShortSet toSet() { MutableShortSet result = new ShortHashSet(this.size()); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result.add(this.values[i]); } } return result; } @Override public MutableShortBag toBag() { MutableShortBag result = new ShortHashBag(this.size()); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { result.add(this.values[i]); } } return result; } @Override public LazyShortIterable asLazy() { return new LazyShortIterableAdapter(this); } @Override public short[] toSortedArray() { short[] array = this.toArray(); Arrays.sort(array); return array; } @Override public MutableShortList toSortedList() { return this.toList().sortThis(); } @Override public void writeExternal(ObjectOutput out) throws IOException { out.writeInt(this.size()); for (int i = 0; i < this.keys.length; i++) { if (isNonSentinel(this.keys[i])) { out.writeObject(this.toNonSentinel(this.keys[i])); out.writeShort(this.values[i]); } } } @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { int size = in.readInt(); int capacity = this.smallestPowerOfTwoGreaterThan(this.fastCeil(size << 1)); this.allocateTable(capacity); for (int i = 0; i < size; i++) { this.put((K) in.readObject(), in.readShort()); } } @Override public LazyIterable<K> keysView() { return new KeysView(); } @Override public RichIterable<ObjectShortPair<K>> keyValuesView() { return new KeyValuesView(); } @Override public MutableShortObjectMap<K> flipUniqueValues() { MutableShortObjectMap<K> result = ShortObjectMaps.mutable.empty(); this.forEachKeyValue((key, value) -> { K oldKey = result.put(value, key); if (oldKey != null) { throw new IllegalStateException("Duplicate value: " + value + " found at key: " + oldKey + " and key: " + key); } }); return result; }
Rehashes every element in the set into a new backing table of the smallest possible size and eliminating removed sentinels.
/** * Rehashes every element in the set into a new backing table of the smallest possible size and eliminating removed sentinels. */
public void compact() { this.rehash(this.smallestPowerOfTwoGreaterThan(this.size())); } private void rehashAndGrow() { int max = this.maxOccupiedWithData(); int newCapacity = Math.max(max, smallestPowerOfTwoGreaterThan((this.occupiedWithData + 1) << 1)); if (this.occupiedWithSentinels > 0 && (max >> 1) + (max >> 2) < this.occupiedWithData) { newCapacity <<= 1; } this.rehash(newCapacity); } private void rehash(int newCapacity) { int oldLength = this.keys.length; Object[] old = this.keys; short[] oldValues = this.values; this.allocateTable(newCapacity); this.occupiedWithData = 0; this.occupiedWithSentinels = 0; for (int i = 0; i < oldLength; i++) { if (isNonSentinel(old[i])) { this.put(this.toNonSentinel(old[i]), oldValues[i]); } } } // exposed for testing int probe(Object element) { int index = this.spread(element); int removedIndex = -1; if (isRemovedKey(this.keys[index])) { removedIndex = index; } else if (this.keys[index] == null || 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 (isRemovedKey(this.keys[nextIndex])) { if (removedIndex == -1) { removedIndex = nextIndex; } } else if (nullSafeEquals(this.toNonSentinel(this.keys[nextIndex]), element)) { return nextIndex; } else if (this.keys[nextIndex] == null) { return removedIndex == -1 ? nextIndex : removedIndex; } } } // 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 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 void allocateTable(int sizeToAllocate) { this.keys = new Object[sizeToAllocate]; this.values = new short[sizeToAllocate]; } private static boolean isRemovedKey(Object key) { return key == REMOVED_KEY; } private static <K> boolean isNonSentinel(K key) { return key != null && !isRemovedKey(key); } private K toNonSentinel(Object key) { return key == NULL_KEY ? null : (K) key; } 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 >> 1); } private class InternalShortIterator implements MutableShortIterator { private int count; private int position; @Override public boolean hasNext() { return this.count != ObjectShortHashMap.this.size(); } @Override public short next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectShortHashMap.this.keys; while (!isNonSentinel(keys[this.position])) { this.position++; } short result = ObjectShortHashMap.this.values[this.position]; this.count++; this.position++; return result; } @Override public void remove() { if (this.position == 0 || !isNonSentinel(ObjectShortHashMap.this.keys[this.position - 1])) { throw new IllegalStateException(); } ObjectShortHashMap.this.remove(ObjectShortHashMap.this.keys[this.position - 1]); this.count--; } } @Override public Set<K> keySet() { return new KeySet(); } @Override public MutableShortCollection values() { return new ValuesCollection(); } 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 = ObjectShortHashMap.this.keys; for (int i = 0; i < table.length; i++) { Object key = table[i]; if (ObjectShortHashMap.isNonSentinel(key)) { K nonSentinelKey = ObjectShortHashMap.this.toNonSentinel(key); hashCode += nonSentinelKey == null ? 0 : nonSentinelKey.hashCode(); } } return hashCode; } @Override public int size() { return ObjectShortHashMap.this.size(); } @Override public boolean isEmpty() { return ObjectShortHashMap.this.isEmpty(); } @Override public boolean contains(Object o) { return ObjectShortHashMap.this.containsKey(o); } @Override public Object[] toArray() { int size = ObjectShortHashMap.this.size(); Object[] result = new Object[size]; this.copyKeys(result); return result; } @Override public <T> T[] toArray(T[] result) { int size = ObjectShortHashMap.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 = ObjectShortHashMap.this.size(); ObjectShortHashMap.this.removeKey((K) key); return oldSize != ObjectShortHashMap.this.size(); } @Override public boolean containsAll(Collection<?> collection) { for (Object aCollection : collection) { if (!ObjectShortHashMap.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 = ObjectShortHashMap.this.size(); Iterator<K> iterator = this.iterator(); while (iterator.hasNext()) { K next = iterator.next(); if (!collection.contains(next)) { iterator.remove(); } } return oldSize != ObjectShortHashMap.this.size(); } @Override public boolean removeAll(Collection<?> collection) { int oldSize = ObjectShortHashMap.this.size(); for (Object object : collection) { ObjectShortHashMap.this.removeKey((K) object); } return oldSize != ObjectShortHashMap.this.size(); } @Override public void clear() { ObjectShortHashMap.this.clear(); } @Override public Iterator<K> iterator() { return new KeySetIterator(); } private void copyKeys(Object[] result) { int count = 0; for (int i = 0; i < ObjectShortHashMap.this.keys.length; i++) { Object key = ObjectShortHashMap.this.keys[i]; if (ObjectShortHashMap.isNonSentinel(key)) { result[count++] = ObjectShortHashMap.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 < ObjectShortHashMap.this.size(); } @Override public K next() { if (!this.hasNext()) { throw new NoSuchElementException(); } this.count++; Object[] keys = ObjectShortHashMap.this.keys; while (!isNonSentinel(keys[this.position])) { this.position++; } this.currentKey = (K) ObjectShortHashMap.this.keys[this.position]; this.isCurrentKeySet = true; this.position++; return ObjectShortHashMap.this.toNonSentinel(this.currentKey); } @Override public void remove() { if (!this.isCurrentKeySet) { throw new IllegalStateException(); } this.isCurrentKeySet = false; this.count--; if (isNonSentinel(this.currentKey)) { int index = this.position - 1; ObjectShortHashMap.this.removeKeyAtIndex(ObjectShortHashMap.this.toNonSentinel(this.currentKey), index); } else { ObjectShortHashMap.this.removeKey(this.currentKey); } } } private class ValuesCollection implements MutableShortCollection { @Override public int size() { return ObjectShortHashMap.this.size(); } @Override public boolean isEmpty() { return ObjectShortHashMap.this.isEmpty(); } @Override public boolean notEmpty() { return ObjectShortHashMap.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 < ObjectShortHashMap.this.keys.length; i++) { Object key = ObjectShortHashMap.this.keys[i]; if (isNonSentinel(key)) { if (!first) { appendable.append(separator); } appendable.append(String.valueOf(ObjectShortHashMap.this.values[i])); first = false; } } appendable.append(end); } catch (IOException e) { throw new RuntimeException(e); } } @Override public boolean add(short element) { throw new UnsupportedOperationException("Cannot call add() on " + this.getClass().getSimpleName()); } @Override public boolean addAll(short... source) { throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName()); } @Override public boolean addAll(ShortIterable source) { throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName()); } @Override public boolean remove(short item) { int oldSize = ObjectShortHashMap.this.size(); for (int i = 0; i < ObjectShortHashMap.this.keys.length; i++) { if (isNonSentinel(ObjectShortHashMap.this.keys[i]) && item == ObjectShortHashMap.this.values[i]) { ObjectShortHashMap.this.removeKey((K) ObjectShortHashMap.this.keys[i]); } } return oldSize != ObjectShortHashMap.this.size(); } @Override public boolean removeAll(ShortIterable source) { int oldSize = ObjectShortHashMap.this.size(); ShortIterator iterator = source.shortIterator(); while (iterator.hasNext()) { this.remove(iterator.next()); } return oldSize != ObjectShortHashMap.this.size(); } @Override public boolean removeAll(short... source) { int oldSize = ObjectShortHashMap.this.size(); for (short item : source) { this.remove(item); } return oldSize != ObjectShortHashMap.this.size(); } @Override public boolean retainAll(ShortIterable source) { int oldSize = ObjectShortHashMap.this.size(); final ShortSet sourceSet = source instanceof ShortSet ? (ShortSet) source : source.toSet(); ObjectShortHashMap<K> retained = ObjectShortHashMap.this.select((K object, short value) -> sourceSet.contains(value)); if (retained.size() != oldSize) { ObjectShortHashMap.this.keys = retained.keys; ObjectShortHashMap.this.values = retained.values; ObjectShortHashMap.this.occupiedWithData = retained.occupiedWithData; ObjectShortHashMap.this.occupiedWithSentinels = retained.occupiedWithSentinels; return true; } return false; } @Override public boolean retainAll(short... source) { return this.retainAll(ShortHashSet.newSetWith(source)); } @Override public void clear() { ObjectShortHashMap.this.clear(); } @Override public MutableShortCollection with(short element) { throw new UnsupportedOperationException("Cannot call with() on " + this.getClass().getSimpleName()); } @Override public MutableShortCollection without(short element) { throw new UnsupportedOperationException("Cannot call without() on " + this.getClass().getSimpleName()); } @Override public MutableShortCollection withAll(ShortIterable elements) { throw new UnsupportedOperationException("Cannot call withAll() on " + this.getClass().getSimpleName()); } @Override public MutableShortCollection withoutAll(ShortIterable elements) { throw new UnsupportedOperationException("Cannot call withoutAll() on " + this.getClass().getSimpleName()); } @Override public MutableShortCollection asUnmodifiable() { return UnmodifiableShortCollection.of(this); } @Override public MutableShortCollection asSynchronized() { return SynchronizedShortCollection.of(this); } @Override public ImmutableShortCollection toImmutable() { return ShortLists.immutable.withAll(this); } @Override public MutableShortIterator shortIterator() { return ObjectShortHashMap.this.shortIterator(); } @Override public short[] toArray() { return ObjectShortHashMap.this.toArray(); } @Override public boolean contains(short value) { return ObjectShortHashMap.this.containsValue(value); } @Override public boolean containsAll(short... source) { return ObjectShortHashMap.this.containsAll(source); } @Override public boolean containsAll(ShortIterable source) { return ObjectShortHashMap.this.containsAll(source); } @Override public void forEach(ShortProcedure procedure) { this.each(procedure); } @Override public void each(ShortProcedure procedure) { ObjectShortHashMap.this.forEach(procedure); } @Override public MutableShortCollection select(ShortPredicate predicate) { return ObjectShortHashMap.this.select(predicate); } @Override public MutableShortCollection reject(ShortPredicate predicate) { return ObjectShortHashMap.this.reject(predicate); } @Override public <V> MutableCollection<V> collect(ShortToObjectFunction<? extends V> function) { return ObjectShortHashMap.this.collect(function); } @Override public <T> T injectInto(T injectedValue, ObjectShortToObjectFunction<? super T, ? extends T> function) { return ObjectShortHashMap.this.injectInto(injectedValue, function); } @Override public RichIterable<ShortIterable> chunk(int size) { return ObjectShortHashMap.this.chunk(size); } @Override public short detectIfNone(ShortPredicate predicate, short ifNone) { return ObjectShortHashMap.this.detectIfNone(predicate, ifNone); } @Override public int count(ShortPredicate predicate) { return ObjectShortHashMap.this.count(predicate); } @Override public boolean anySatisfy(ShortPredicate predicate) { return ObjectShortHashMap.this.anySatisfy(predicate); } @Override public boolean allSatisfy(ShortPredicate predicate) { return ObjectShortHashMap.this.allSatisfy(predicate); } @Override public boolean noneSatisfy(ShortPredicate predicate) { return ObjectShortHashMap.this.noneSatisfy(predicate); } @Override public MutableShortList toList() { return ObjectShortHashMap.this.toList(); } @Override public MutableShortSet toSet() { return ObjectShortHashMap.this.toSet(); } @Override public MutableShortBag toBag() { return ObjectShortHashMap.this.toBag(); } @Override public LazyShortIterable asLazy() { return new LazyShortIterableAdapter(this); } @Override public short[] toSortedArray() { return ObjectShortHashMap.this.toSortedArray(); } @Override public MutableShortList toSortedList() { return ObjectShortHashMap.this.toSortedList(); } @Override public long sum() { return ObjectShortHashMap.this.sum(); } @Override public short max() { return ObjectShortHashMap.this.max(); } @Override public short maxIfEmpty(short defaultValue) { return ObjectShortHashMap.this.maxIfEmpty(defaultValue); } @Override public short min() { return ObjectShortHashMap.this.min(); } @Override public short minIfEmpty(short defaultValue) { return ObjectShortHashMap.this.minIfEmpty(defaultValue); } @Override public double average() { return ObjectShortHashMap.this.average(); } @Override public double median() { return ObjectShortHashMap.this.median(); }
Since:9.2.
/** * @since 9.2. */
@Override public MutableShortCollection newEmpty() { return new ShortHashBag(); } } private class KeysView extends AbstractLazyIterable<K> { @Override public void each(Procedure<? super K> procedure) { ObjectShortHashMap.this.forEachKey(procedure); } @Override public void forEachWithIndex(ObjectIntProcedure<? super K> objectShortProcedure) { int index = 0; for (int i = 0; i < ObjectShortHashMap.this.keys.length; i++) { if (ObjectShortHashMap.isNonSentinel(ObjectShortHashMap.this.keys[i])) { objectShortProcedure.value(ObjectShortHashMap.this.toNonSentinel(ObjectShortHashMap.this.keys[i]), index); index++; } } } @Override public <P> void forEachWith(Procedure2<? super K, ? super P> procedure, P parameter) { for (int i = 0; i < ObjectShortHashMap.this.keys.length; i++) { if (ObjectShortHashMap.isNonSentinel(ObjectShortHashMap.this.keys[i])) { procedure.value(ObjectShortHashMap.this.toNonSentinel(ObjectShortHashMap.this.keys[i]), parameter); } } } @Override public Iterator<K> iterator() { return new InternalKeysViewIterator(); } public class InternalKeysViewIterator implements Iterator<K> { private int count; private int position; @Override public K next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectShortHashMap.this.keys; while (!isNonSentinel(keys[this.position])) { this.position++; } K result = ObjectShortHashMap.this.toNonSentinel(ObjectShortHashMap.this.keys[this.position]); this.count++; this.position++; return result; } @Override public void remove() { throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName()); } @Override public boolean hasNext() { return this.count != ObjectShortHashMap.this.size(); } } } private class KeyValuesView extends AbstractLazyIterable<ObjectShortPair<K>> { @Override public void each(Procedure<? super ObjectShortPair<K>> procedure) { for (int i = 0; i < ObjectShortHashMap.this.keys.length; i++) { if (ObjectShortHashMap.isNonSentinel(ObjectShortHashMap.this.keys[i])) { procedure.value(PrimitiveTuples.pair(ObjectShortHashMap.this.toNonSentinel(ObjectShortHashMap.this.keys[i]), ObjectShortHashMap.this.values[i])); } } } @Override public void forEachWithIndex(ObjectIntProcedure<? super ObjectShortPair<K>> objectIntProcedure) { int index = 0; for (int i = 0; i < ObjectShortHashMap.this.keys.length; i++) { if (ObjectShortHashMap.isNonSentinel(ObjectShortHashMap.this.keys[i])) { objectIntProcedure.value(PrimitiveTuples.pair(ObjectShortHashMap.this.toNonSentinel(ObjectShortHashMap.this.keys[i]), ObjectShortHashMap.this.values[i]), index); index++; } } } @Override public <P> void forEachWith(Procedure2<? super ObjectShortPair<K>, ? super P> procedure, P parameter) { for (int i = 0; i < ObjectShortHashMap.this.keys.length; i++) { if (ObjectShortHashMap.isNonSentinel(ObjectShortHashMap.this.keys[i])) { procedure.value(PrimitiveTuples.pair(ObjectShortHashMap.this.toNonSentinel(ObjectShortHashMap.this.keys[i]), ObjectShortHashMap.this.values[i]), parameter); } } } @Override public Iterator<ObjectShortPair<K>> iterator() { return new InternalKeyValuesIterator(); } public class InternalKeyValuesIterator implements Iterator<ObjectShortPair<K>> { private int count; private int position; @Override public ObjectShortPair<K> next() { if (!this.hasNext()) { throw new NoSuchElementException(); } Object[] keys = ObjectShortHashMap.this.keys; while (!isNonSentinel(keys[this.position])) { this.position++; } ObjectShortPair<K> result = PrimitiveTuples.pair(ObjectShortHashMap.this.toNonSentinel(ObjectShortHashMap.this.keys[this.position]), ObjectShortHashMap.this.values[this.position]); this.count++; this.position++; return result; } @Override public void remove() { throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName()); } @Override public boolean hasNext() { return this.count != ObjectShortHashMap.this.size(); } } } }