/*
 * Copyright (c) 2020 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.set.mutable.primitive;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.Serializable;
import java.util.Arrays;
import java.util.Collection;
import java.util.NoSuchElementException;

import org.eclipse.collections.api.FloatIterable;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.block.function.primitive.FloatToObjectFunction;
import org.eclipse.collections.api.block.function.primitive.ObjectFloatToObjectFunction;
import org.eclipse.collections.api.block.predicate.primitive.FloatPredicate;
import org.eclipse.collections.api.block.procedure.primitive.FloatProcedure;
import org.eclipse.collections.api.collection.primitive.MutableFloatCollection;
import org.eclipse.collections.api.iterator.FloatIterator;
import org.eclipse.collections.api.iterator.MutableFloatIterator;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.impl.factory.Lists;
import org.eclipse.collections.api.set.ImmutableSet;
import org.eclipse.collections.api.set.MutableSet;
import org.eclipse.collections.api.set.primitive.ImmutableFloatSet;
import org.eclipse.collections.api.set.primitive.MutableFloatSet;
import org.eclipse.collections.api.set.primitive.FloatSet;
import org.eclipse.collections.impl.factory.primitive.FloatSets;
import org.eclipse.collections.impl.set.immutable.primitive.ImmutableFloatSetSerializationProxy;
import org.eclipse.collections.impl.set.mutable.UnifiedSet;
import org.eclipse.collections.impl.SpreadFunctions;
import org.eclipse.collections.impl.set.immutable.primitive.AbstractImmutableFloatSet;
import org.eclipse.collections.impl.set.primitive.AbstractFloatSet;

This file was automatically generated from template file primitiveHashSet.stg.
Since:3.0.
/** * This file was automatically generated from template file primitiveHashSet.stg. * * @since 3.0. */
public class FloatHashSet extends AbstractFloatSet implements MutableFloatSet, Externalizable { private static final long serialVersionUID = 1L; private static final int DEFAULT_INITIAL_CAPACITY = 16; private static final float EMPTY = 0.0f; private static final float REMOVED = 1.0f; private static final int CACHE_LINE_SIZE = 64; private static final int KEY_SIZE = 4; private static final int INITIAL_LINEAR_PROBE = CACHE_LINE_SIZE / KEY_SIZE / 2; /* half a cache line */ private float[] table; private int occupiedWithData; private int occupiedWithSentinels; // The 32 bits of this integer indicate whether the items 0.0f to 31.0f are present in the set. private int zeroToThirtyOne; private int zeroToThirtyOneOccupied; private transient boolean copyOnWrite; public FloatHashSet() { this.allocateTable(DEFAULT_INITIAL_CAPACITY); } public FloatHashSet(int initialCapacity) { if (initialCapacity < 0) { throw new IllegalArgumentException("initial capacity cannot be less than 0"); } int capacity = this.smallestPowerOfTwoGreaterThan(initialCapacity << 1); this.allocateTable(capacity); } public FloatHashSet(float... elements) { this(); this.addAll(elements); } public FloatHashSet(FloatHashSet set) { this.occupiedWithData = set.occupiedWithData; this.occupiedWithSentinels = set.occupiedWithSentinels; this.zeroToThirtyOneOccupied = set.zeroToThirtyOneOccupied; this.zeroToThirtyOne = set.zeroToThirtyOne; this.allocateTable(set.table.length); System.arraycopy(set.table, 0, this.table, 0, set.table.length); } private int smallestPowerOfTwoGreaterThan(int n) { return n > 1 ? Integer.highestOneBit(n - 1) << 1 : 1; } public static FloatHashSet newSet(FloatIterable source) { if (source instanceof FloatHashSet) { return new FloatHashSet((FloatHashSet) source); } return FloatHashSet.newSetWith(source.toArray()); } public static FloatHashSet newSetWith(float... source) { return new FloatHashSet(source); } private static boolean isBetweenZeroAndThirtyOne(float value) { return Float.compare(value, 0.0f) >= 0 && Float.compare(value, 31.0f) <= 0 && Double.compare(value, Math.floor(value)) == 0; } @Override public int hashCode() { int result = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); result += Float.floatToIntBits(value); zeroToThirtyOne &= ~(1 << (int) value); } if (this.table != null) { for (int i = 0; i < this.table.length; i++) { if (isNonSentinel(this.table[i])) { result += Float.floatToIntBits(this.table[i]); } } } return result; } @Override public int size() { return this.occupiedWithData + this.zeroToThirtyOneOccupied; } @Override public void appendString(Appendable appendable, String start, String separator, String end) { try { appendable.append(start); int count = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (count > 0) { appendable.append(separator); } count++; appendable.append(String.valueOf(value)); zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (count > 0) { appendable.append(separator); } count++; appendable.append(String.valueOf(value)); } } appendable.append(end); } catch (IOException e) { throw new RuntimeException(e); } } @Override public boolean add(float element) { if (isBetweenZeroAndThirtyOne(element)) { int initial = this.zeroToThirtyOne; this.zeroToThirtyOne |= 1 << (int) element; if (this.zeroToThirtyOne != initial) { this.zeroToThirtyOneOccupied++; return true; } return false; } int index = this.probe(element); if (Float.compare(this.table[index], element) == 0) { // element already present in set return false; } if (this.copyOnWrite) { this.copyTable(); } if (Float.compare(this.table[index], REMOVED) == 0) { --this.occupiedWithSentinels; } this.table[index] = element; ++this.occupiedWithData; if (this.occupiedWithData + this.occupiedWithSentinels > this.maxOccupiedWithData()) { this.rehashAndGrow(); } return true; } @Override public boolean addAll(float... source) { int oldSize = this.size(); for (float item : source) { this.add(item); } return this.size() != oldSize; } @Override public boolean addAll(FloatIterable source) { if (source.isEmpty()) { return false; } int oldSize = this.size(); if (source instanceof FloatHashSet) { FloatHashSet hashSet = (FloatHashSet) source; this.zeroToThirtyOne |= hashSet.zeroToThirtyOne; this.zeroToThirtyOneOccupied = Integer.bitCount(this.zeroToThirtyOne); for (float item : hashSet.table) { if (isNonSentinel(item)) { this.add(item); } } } else { FloatIterator iterator = source.floatIterator(); while (iterator.hasNext()) { float item = iterator.next(); this.add(item); } } return this.size() != oldSize; } @Override public boolean remove(float value) { if (isBetweenZeroAndThirtyOne(value)) { return this.removeZeroToThirtyOne(value); } if (this.occupiedWithData == 0) { return false; } int index = this.probe(value); if (Float.compare(this.table[index], value) == 0) { if (this.copyOnWrite) { this.copyTable(); } this.table[index] = REMOVED; this.occupiedWithData--; this.occupiedWithSentinels++; return true; } return false; } private boolean removeZeroToThirtyOne(float value) { int initial = this.zeroToThirtyOne; this.zeroToThirtyOne &= ~(1 << (int) value); if (this.zeroToThirtyOne == initial) { return false; } this.zeroToThirtyOneOccupied--; return true; } @Override public boolean removeAll(FloatIterable source) { if (source.isEmpty()) { return false; } int oldSize = this.size(); if (source instanceof FloatHashSet) { FloatHashSet hashSet = (FloatHashSet) source; this.zeroToThirtyOne &= ~hashSet.zeroToThirtyOne; this.zeroToThirtyOneOccupied = Integer.bitCount(this.zeroToThirtyOne); for (float item : hashSet.table) { if (isNonSentinel(item)) { this.remove(item); } } } else { FloatIterator iterator = source.floatIterator(); while (iterator.hasNext()) { float item = iterator.next(); this.remove(item); } } return this.size() != oldSize; } @Override public boolean removeAll(float... source) { if (source.length == 0) { return false; } int oldSize = this.size(); for (float item : source) { this.remove(item); } return this.size() != oldSize; } @Override public boolean retainAll(FloatIterable source) { int oldSize = this.size(); final FloatSet sourceSet = source instanceof FloatSet ? (FloatSet) source : source.toSet(); FloatHashSet retained = this.select(sourceSet::contains); if (retained.size() != oldSize) { this.zeroToThirtyOne = retained.zeroToThirtyOne; this.zeroToThirtyOneOccupied = retained.zeroToThirtyOneOccupied; this.occupiedWithData = retained.occupiedWithData; this.occupiedWithSentinels = retained.occupiedWithSentinels; this.table = retained.table; return true; } return false; } @Override public boolean retainAll(float... source) { return this.retainAll(FloatHashSet.newSetWith(source)); } @Override public void clear() { this.zeroToThirtyOneOccupied = 0; this.occupiedWithData = 0; this.occupiedWithSentinels = 0; this.zeroToThirtyOne = 0; if (this.copyOnWrite) { this.table = new float[this.table.length]; this.copyOnWrite = false; } else { Arrays.fill(this.table, EMPTY); } } @Override public FloatHashSet with(float element) { this.add(element); return this; } @Override public FloatHashSet without(float element) { this.remove(element); return this; } @Override public FloatHashSet withAll(FloatIterable elements) { this.addAll(elements.toArray()); return this; } @Override public FloatHashSet withoutAll(FloatIterable elements) { this.removeAll(elements); return this; } @Override public MutableFloatSet asUnmodifiable() { return new UnmodifiableFloatSet(this); } @Override public MutableFloatSet asSynchronized() { return new SynchronizedFloatSet(this); } @Override public ImmutableFloatSet toImmutable() { if (this.size() == 0) { return FloatSets.immutable.with(); } if (this.size() == 1) { return FloatSets.immutable.with(this.floatIterator().next()); } FloatHashSet mutableSet = FloatHashSet.newSetWith(this.toArray()); return new ImmutableFloatHashSet(mutableSet.table, mutableSet.occupiedWithData, mutableSet.zeroToThirtyOne, mutableSet.zeroToThirtyOneOccupied); } @Override public MutableFloatIterator floatIterator() { return new InternalFloatIterator(); } @Override public float[] toArray() { float[] array = new float[this.size()]; int j = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); array[j] = value; j++; zeroToThirtyOne &= ~(1 << (int) value); } for (int i = 0; i < this.table.length && j < this.size(); i++) { if (isNonSentinel(this.table[i])) { array[j] = this.table[i]; j++; } } return array; } @Override public float[] toArray(float[] array) { if (array.length < this.size()) { array = new float[this.size()]; } int j = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); array[j] = value; j++; zeroToThirtyOne &= ~(1 << (int) value); } for (int i = 0; i < this.table.length && j < this.size(); i++) { if (isNonSentinel(this.table[i])) { array[j] = this.table[i]; j++; } } return array; } @Override public boolean contains(float value) { if (isBetweenZeroAndThirtyOne(value)) { int temp = this.zeroToThirtyOne; return ((temp >>> (int) value) & 1) != 0; } return Float.compare(this.table[this.probe(value)], value) == 0; } @Override public void forEach(FloatProcedure procedure) { this.each(procedure); }
Since:7.0.
/** * @since 7.0. */
@Override public void each(FloatProcedure procedure) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); procedure.value(value); zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { procedure.value(value); } } } @Override public FloatHashSet select(FloatPredicate predicate) { return this.select(predicate, new FloatHashSet()); }
Since:8.1.
/** * @since 8.1. */
@Override public <R extends MutableFloatCollection> R select(FloatPredicate predicate, R target) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (predicate.accept(value)) { target.add(value); } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (predicate.accept(value)) { target.add(value); } } } return target; } @Override public FloatHashSet reject(FloatPredicate predicate) { return this.reject(predicate, new FloatHashSet()); }
Since:8.1.
/** * @since 8.1. */
@Override public <R extends MutableFloatCollection> R reject(FloatPredicate predicate, R target) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (!predicate.accept(value)) { target.add(value); } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (!predicate.accept(value)) { target.add(value); } } } return target; } @Override public <V> MutableSet<V> collect(FloatToObjectFunction<? extends V> function) { return this.collect(function, UnifiedSet.newSet(this.size())); }
Since:8.1.
/** * @since 8.1. */
@Override public <V, R extends Collection<V>> R collect(FloatToObjectFunction<? extends V> function, R target) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); target.add(function.valueOf(value)); zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { target.add(function.valueOf(value)); } } return target; } @Override public float detectIfNone(FloatPredicate predicate, float ifNone) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (predicate.accept(value)) { return value; } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (predicate.accept(value)) { return value; } } } return ifNone; } @Override public int count(FloatPredicate predicate) { int count = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (predicate.accept(value)) { count++; } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (predicate.accept(value)) { count++; } } } return count; } @Override public boolean anySatisfy(FloatPredicate predicate) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (predicate.accept(value)) { return true; } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (predicate.accept(value)) { return true; } } } return false; } @Override public boolean allSatisfy(FloatPredicate predicate) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (!predicate.accept(value)) { return false; } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (!predicate.accept(value)) { return false; } } } return true; } @Override public boolean noneSatisfy(FloatPredicate predicate) { return !this.anySatisfy(predicate); } @Override public double sum() { double result = 0.0; double compensation = 0.0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); double adjustedValue = value - compensation; double nextSum = result + adjustedValue; compensation = nextSum - result - adjustedValue; result = nextSum; zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { double adjustedValue = value - compensation; double nextSum = result + adjustedValue; compensation = nextSum - result - adjustedValue; result = nextSum; } } return result; } @Override public float max() { if (this.isEmpty()) { throw new NoSuchElementException(); } float max = 31 - Integer.numberOfLeadingZeros(this.zeroToThirtyOne); boolean isMaxSet = this.zeroToThirtyOneOccupied != 0; for (float value : this.table) { if (isNonSentinel(value) && (!isMaxSet || Float.compare(max, value) < 0)) { max = value; isMaxSet = true; } } return max; } @Override public float min() { if (this.isEmpty()) { throw new NoSuchElementException(); } float min = (float) Integer.numberOfTrailingZeros(this.zeroToThirtyOne); boolean isMinSet = this.zeroToThirtyOneOccupied != 0; for (float value : this.table) { if (isNonSentinel(value) && (!isMinSet || Float.compare(value, min) < 0)) { min = value; isMinSet = true; } } return min; } @Override public FloatSet freeze() { if (this.size() == 0) { return FloatSets.immutable.with(); } if (this.size() == 1) { return FloatSets.immutable.with(this.floatIterator().next()); } this.copyOnWrite = true; return new ImmutableFloatHashSet(this.table, this.occupiedWithData, this.zeroToThirtyOne, this.zeroToThirtyOneOccupied); } @Override public void writeExternal(ObjectOutput out) throws IOException { out.writeInt(this.size()); int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); out.writeFloat(value); zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { out.writeFloat(value); } } } @Override public void readExternal(ObjectInput in) throws IOException { int size = in.readInt(); for (int i = 0; i < size; i++) { this.add(in.readFloat()); } } @Override public <T> T injectInto(T injectedValue, ObjectFloatToObjectFunction<? super T, ? extends T> function) { T result = injectedValue; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); result = function.valueOf(result, value); zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { result = function.valueOf(result, value); } } return result; } @Override public RichIterable<FloatIterable> chunk(int size) { if (size <= 0) { throw new IllegalArgumentException("Size for groups must be positive but was: " + size); } MutableList<FloatIterable> result = Lists.mutable.empty(); if (this.notEmpty()) { if (this.size() <= size) { result.add(FloatSets.mutable.withAll(this)); } else { FloatIterator iterator = this.floatIterator(); while (iterator.hasNext()) { MutableFloatSet batch = FloatSets.mutable.empty(); for (int i = 0; i < size && iterator.hasNext(); i++) { batch.add(iterator.next()); } result.add(batch); } } } return result; }
Creates a new empty FloatHashSet.
Since:9.2.
/** * Creates a new empty FloatHashSet. * * @since 9.2. */
public FloatHashSet newEmpty() { return new FloatHashSet(); }
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.table.length; float[] old = this.table; this.allocateTable(newCapacity); this.occupiedWithData = 0; this.occupiedWithSentinels = 0; for (int i = 0; i < oldLength; i++) { if (isNonSentinel(old[i])) { this.add(old[i]); } } } protected void allocateTable(int sizeToAllocate) { this.table = new float[sizeToAllocate]; } // exposed for testing int probe(float element) { int index = this.spreadAndMask(element); float valueAtIndex = this.table[index]; if (Float.compare(valueAtIndex, element) == 0 || Float.compare(valueAtIndex, EMPTY) == 0) { return index; } int removedIndex = Float.compare(valueAtIndex, REMOVED) == 0 ? index : -1; for (int i = 1; i < INITIAL_LINEAR_PROBE; i++) { int nextIndex = (index + i) & (this.table.length - 1); valueAtIndex = this.table[nextIndex]; if (Float.compare(valueAtIndex, element) == 0) { return nextIndex; } if (Float.compare(valueAtIndex, EMPTY) == 0) { return removedIndex == -1 ? nextIndex : removedIndex; } if (Float.compare(valueAtIndex, REMOVED) == 0 && removedIndex == -1) { removedIndex = nextIndex; } } return this.probeTwo(element, removedIndex); } int probeTwo(float element, int removedIndex) { int index = this.spreadTwoAndMask(element); for (int i = 0; i < INITIAL_LINEAR_PROBE; i++) { int nextIndex = (index + i) & (this.table.length - 1); float valueAtIndex = this.table[nextIndex]; if (Float.compare(valueAtIndex, element) == 0) { return nextIndex; } if (Float.compare(valueAtIndex, EMPTY) == 0) { return removedIndex == -1 ? nextIndex : removedIndex; } if (Float.compare(valueAtIndex, REMOVED) == 0 && removedIndex == -1) { removedIndex = nextIndex; } } return this.probeThree(element, removedIndex); } int probeThree(float element, int removedIndex) { int nextIndex = Integer.reverse(SpreadFunctions.floatSpreadOne(element)); int spreadTwo = Integer.reverse(SpreadFunctions.floatSpreadTwo(element)) | 1; while (true) { nextIndex = this.mask(nextIndex + spreadTwo); float valueAtIndex = this.table[nextIndex]; if (Float.compare(valueAtIndex, element) == 0) { return nextIndex; } if (Float.compare(valueAtIndex, EMPTY) == 0) { return removedIndex == -1 ? nextIndex : removedIndex; } if (Float.compare(valueAtIndex, REMOVED) == 0 && removedIndex == -1) { removedIndex = nextIndex; } } } // exposed for testing int spreadAndMask(float element) { int code = SpreadFunctions.floatSpreadOne(element); return this.mask(code); } int spreadTwoAndMask(float element) { int code = SpreadFunctions.floatSpreadTwo(element); return this.mask(code); } private int mask(int spread) { return spread & (this.table.length - 1); } private void copyTable() { this.copyOnWrite = false; float[] copy = new float[this.table.length]; System.arraycopy(this.table, 0, copy, 0, this.table.length); this.table = copy; } private int maxOccupiedWithData() { return this.table.length >> 1; } private static boolean isNonSentinel(float value) { return Float.compare(value, EMPTY) != 0 && Float.compare(value, REMOVED) != 0; } private static final class ImmutableFloatHashSet extends AbstractImmutableFloatSet implements Serializable { private static final long serialVersionUID = 1L; private final float[] table; private final int occupied; // The 32 bits of this integer indicate whether the items 0.0f to 31.0f are present in the set. private final int zeroToThirtyOne; private final int zeroToThirtyOneOccupied; private ImmutableFloatHashSet(float[] table, int occupied, int zeroToThirtyOne, int zeroToThirtyOneOccupied) { this.checkOptimizedSize(occupied + zeroToThirtyOneOccupied); this.occupied = occupied; this.zeroToThirtyOneOccupied = zeroToThirtyOneOccupied; this.zeroToThirtyOne = zeroToThirtyOne; this.table = table; } private void checkOptimizedSize(int length) { if (length <= 1) { throw new IllegalArgumentException("Use FloatSets.immutable.with() to instantiate an optimized collection"); } } public static ImmutableFloatSet newSetWith(float... elements) { return FloatHashSet.newSetWith(elements).toImmutable(); } @Override public int hashCode() { int result = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); result += Float.floatToIntBits(value); zeroToThirtyOne &= ~(1 << (int) value); } if (this.table != null) { for (int i = 0; i < this.table.length; i++) { if (isNonSentinel(this.table[i])) { result += Float.floatToIntBits(this.table[i]); } } } return result; } @Override public int size() { return this.occupied + this.zeroToThirtyOneOccupied; } @Override public void appendString(Appendable appendable, String start, String separator, String end) { try { appendable.append(start); int count = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (count > 0) { appendable.append(separator); } count++; appendable.append(String.valueOf(value)); zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (count > 0) { appendable.append(separator); } count++; appendable.append(String.valueOf(value)); } } appendable.append(end); } catch (IOException e) { throw new RuntimeException(e); } } @Override public FloatIterator floatIterator() { return new InternalFloatIterator(); } @Override public float[] toArray() { float[] array = new float[this.size()]; int j = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); array[j] = value; j++; zeroToThirtyOne &= ~(1 << (int) value); } for (int i = 0; i < this.table.length && j < this.size(); i++) { if (isNonSentinel(this.table[i])) { array[j] = this.table[i]; j++; } } return array; } @Override public float[] toArray(float[] array) { if (array.length < this.size()) { array = new float[this.size()]; } int j = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); array[j] = value; j++; zeroToThirtyOne &= ~(1 << (int) value); } for (int i = 0; i < this.table.length && j < this.size(); i++) { if (isNonSentinel(this.table[i])) { array[j] = this.table[i]; j++; } } return array; } @Override public boolean contains(float value) { if (isBetweenZeroAndThirtyOne(value)) { int temp = this.zeroToThirtyOne; return ((temp >>> (int) value) & 1) != 0; } return Float.compare(this.table[this.probe(value)], value) == 0; } @Override public void forEach(FloatProcedure procedure) { this.each(procedure); } @Override public void each(FloatProcedure procedure) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); procedure.value(value); zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { procedure.value(value); } } } @Override public ImmutableFloatSet select(FloatPredicate predicate) { return this.select(predicate, new FloatHashSet()).toImmutable(); } @Override public ImmutableFloatSet reject(FloatPredicate predicate) { return this.reject(predicate, new FloatHashSet()).toImmutable(); } @Override public <V> ImmutableSet<V> collect(FloatToObjectFunction<? extends V> function) { MutableSet<V> set = this.collect(function, UnifiedSet.newSet(this.size())); return set.toImmutable(); } @Override public float detectIfNone(FloatPredicate predicate, float ifNone) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (predicate.accept(value)) { return value; } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (predicate.accept(value)) { return value; } } } return ifNone; } @Override public int count(FloatPredicate predicate) { int count = 0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (predicate.accept(value)) { count++; } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (predicate.accept(value)) { count++; } } } return count; } @Override public boolean anySatisfy(FloatPredicate predicate) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (predicate.accept(value)) { return true; } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (predicate.accept(value)) { return true; } } } return false; } @Override public boolean allSatisfy(FloatPredicate predicate) { int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); if (!predicate.accept(value)) { return false; } zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { if (!predicate.accept(value)) { return false; } } } return true; } @Override public boolean noneSatisfy(FloatPredicate predicate) { return !this.anySatisfy(predicate); } @Override public double sum() { double result = 0.0; double compensation = 0.0; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); double adjustedValue = value - compensation; double nextSum = result + adjustedValue; compensation = nextSum - result - adjustedValue; result = nextSum; zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { double adjustedValue = value - compensation; double nextSum = result + adjustedValue; compensation = nextSum - result - adjustedValue; result = nextSum; } } return result; } @Override public float max() { if (this.isEmpty()) { throw new NoSuchElementException(); } float max = 31 - Integer.numberOfLeadingZeros(this.zeroToThirtyOne); boolean isMaxSet = this.zeroToThirtyOneOccupied != 0; for (float value : this.table) { if (isNonSentinel(value) && (!isMaxSet || Float.compare(max, value) < 0)) { max = value; isMaxSet = true; } } return max; } @Override public float min() { if (this.isEmpty()) { throw new NoSuchElementException(); } float min = (float) Integer.numberOfTrailingZeros(this.zeroToThirtyOne); boolean isMinSet = this.zeroToThirtyOneOccupied != 0; for (float value : this.table) { if (isNonSentinel(value) && (!isMinSet || Float.compare(value, min) < 0)) { min = value; isMinSet = true; } } return min; } @Override public <T> T injectInto(T injectedValue, ObjectFloatToObjectFunction<? super T, ? extends T> function) { T result = injectedValue; int zeroToThirtyOne = this.zeroToThirtyOne; while (zeroToThirtyOne != 0) { float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne); result = function.valueOf(result, value); zeroToThirtyOne &= ~(1 << (int) value); } for (float value : this.table) { if (isNonSentinel(value)) { result = function.valueOf(result, value); } } return result; } private Object writeReplace() { return new ImmutableFloatSetSerializationProxy(this); } // exposed for testing int probe(float element) { int index = this.spreadAndMask(element); float valueAtIndex = this.table[index]; if (Float.compare(valueAtIndex, element) == 0 || Float.compare(valueAtIndex, EMPTY) == 0) { return index; } int removedIndex = Float.compare(valueAtIndex, REMOVED) == 0 ? index : -1; for (int i = 1; i < INITIAL_LINEAR_PROBE; i++) { int nextIndex = (index + i) & (this.table.length - 1); valueAtIndex = this.table[nextIndex]; if (Float.compare(valueAtIndex, element) == 0) { return nextIndex; } if (Float.compare(valueAtIndex, EMPTY) == 0) { return removedIndex == -1 ? nextIndex : removedIndex; } if (Float.compare(valueAtIndex, REMOVED) == 0 && removedIndex == -1) { removedIndex = nextIndex; } } return this.probeTwo(element, removedIndex); } int probeTwo(float element, int removedIndex) { int index = this.spreadTwoAndMask(element); for (int i = 0; i < INITIAL_LINEAR_PROBE; i++) { int nextIndex = (index + i) & (this.table.length - 1); float valueAtIndex = this.table[nextIndex]; if (Float.compare(valueAtIndex, element) == 0) { return nextIndex; } if (Float.compare(valueAtIndex, EMPTY) == 0) { return removedIndex == -1 ? nextIndex : removedIndex; } if (Float.compare(valueAtIndex, REMOVED) == 0 && removedIndex == -1) { removedIndex = nextIndex; } } return this.probeThree(element, removedIndex); } int probeThree(float element, int removedIndex) { int nextIndex = Integer.reverse(SpreadFunctions.floatSpreadOne(element)); int spreadTwo = Integer.reverse(SpreadFunctions.floatSpreadTwo(element)) | 1; while (true) { nextIndex = this.mask(nextIndex + spreadTwo); float valueAtIndex = this.table[nextIndex]; if (Float.compare(valueAtIndex, element) == 0) { return nextIndex; } if (Float.compare(valueAtIndex, EMPTY) == 0) { return removedIndex == -1 ? nextIndex : removedIndex; } if (Float.compare(valueAtIndex, REMOVED) == 0 && removedIndex == -1) { removedIndex = nextIndex; } } } // exposed for testing int spreadAndMask(float element) { int code = SpreadFunctions.floatSpreadOne(element); return this.mask(code); } int spreadTwoAndMask(float element) { int code = SpreadFunctions.floatSpreadTwo(element); return this.mask(code); } private int mask(int spread) { return spread & (this.table.length - 1); } private class InternalFloatIterator implements FloatIterator { private int count; private int position; private float zeroToThirtyOne; public boolean hasNext() { return this.count < ImmutableFloatHashSet.this.size(); } public float next() { if (!this.hasNext()) { throw new NoSuchElementException("next() called, but the iterator is exhausted"); } this.count++; while (this.zeroToThirtyOne < 32) { if (ImmutableFloatHashSet.this.contains(this.zeroToThirtyOne)) { float result = this.zeroToThirtyOne; this.zeroToThirtyOne++; return result; } this.zeroToThirtyOne++; } float[] table = ImmutableFloatHashSet.this.table; while (!isNonSentinel(table[this.position])) { this.position++; } float result = table[this.position]; this.position++; return result; } } } private class InternalFloatIterator implements MutableFloatIterator { private int count; private int position; private float zeroToThirtyOne; @Override public boolean hasNext() { return this.count < FloatHashSet.this.size(); } @Override public float next() { if (!this.hasNext()) { throw new NoSuchElementException("next() called, but the iterator is exhausted"); } this.count++; while (this.zeroToThirtyOne < 32) { if (FloatHashSet.this.contains(this.zeroToThirtyOne)) { float result = this.zeroToThirtyOne; this.zeroToThirtyOne++; return result; } this.zeroToThirtyOne++; } float[] table = FloatHashSet.this.table; while (!isNonSentinel(table[this.position])) { this.position++; } float result = table[this.position]; this.position++; return result; } @Override public void remove() { if (this.count == 0) { throw new IllegalStateException(); } float removeValue; if (this.zeroToThirtyOne <= 32.0f && this.position == 0) { if (FloatHashSet.this.zeroToThirtyOne != (FloatHashSet.this.zeroToThirtyOne | 1 << ((int) this.zeroToThirtyOne - 1))) { throw new IllegalStateException(); } removeValue = this.zeroToThirtyOne - 1; } else if (Float.compare(FloatHashSet.this.table[this.position - 1], REMOVED) == 0) { throw new IllegalStateException(); } else { removeValue = FloatHashSet.this.table[this.position - 1]; } if (FloatHashSet.isBetweenZeroAndThirtyOne(removeValue)) { FloatHashSet.this.removeZeroToThirtyOne(removeValue); } else if (Float.compare(FloatHashSet.this.table[this.position - 1], removeValue) == 0) { if (FloatHashSet.this.copyOnWrite) { FloatHashSet.this.copyTable(); } FloatHashSet.this.table[position - 1] = REMOVED; FloatHashSet.this.occupiedWithData--; FloatHashSet.this.occupiedWithSentinels++; } this.count--; } } }