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GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map
implementations with a rich API and set of utility classes that work with any JDK compatible Collections,
Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
/*
* Copyright 2014 Goldman Sachs.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gs.collections.impl.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.NoSuchElementException;
import com.gs.collections.api.FloatIterable;
import com.gs.collections.api.LazyFloatIterable;
import com.gs.collections.api.bag.primitive.MutableFloatBag;
import com.gs.collections.api.block.function.primitive.FloatToObjectFunction;
import com.gs.collections.api.block.function.primitive.ObjectFloatToObjectFunction;
import com.gs.collections.api.block.predicate.primitive.FloatPredicate;
import com.gs.collections.api.block.procedure.primitive.FloatProcedure;
import com.gs.collections.api.iterator.FloatIterator;
import com.gs.collections.api.list.primitive.MutableFloatList;
import com.gs.collections.api.set.ImmutableSet;
import com.gs.collections.api.set.MutableSet;
import com.gs.collections.api.set.primitive.ImmutableFloatSet;
import com.gs.collections.api.set.primitive.MutableFloatSet;
import com.gs.collections.api.set.primitive.FloatSet;
import com.gs.collections.impl.bag.mutable.primitive.FloatHashBag;
import com.gs.collections.impl.factory.primitive.FloatSets;
import com.gs.collections.impl.lazy.primitive.LazyFloatIterableAdapter;
import com.gs.collections.impl.list.mutable.primitive.FloatArrayList;
import com.gs.collections.impl.set.immutable.primitive.ImmutableFloatSetSerializationProxy;
import com.gs.collections.impl.set.mutable.UnifiedSet;
/**
* This file was automatically generated from template file primitiveHashSet.stg.
*
* @since 3.0.
*/
public final class FloatHashSet implements MutableFloatSet, Externalizable
{
private static final long serialVersionUID = 1L;
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 float EMPTY = 0.0f;
private static final float REMOVED = 1.0f;
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 << 1);
}
public FloatHashSet(int initialCapacity)
{
if (initialCapacity < 0)
{
throw new IllegalArgumentException("initial capacity cannot be less than 0");
}
int capacity = this.smallestPowerOfTwoGreaterThan(this.fastCeil(initialCapacity * OCCUPIED_DATA_RATIO));
this.allocateTable(capacity);
}
private int smallestPowerOfTwoGreaterThan(int n)
{
return n > 1 ? Integer.highestOneBit(n - 1) << 1 : 1;
}
private int fastCeil(float v)
{
int possibleResult = (int) v;
if (v - possibleResult > 0.0F)
{
possibleResult++;
}
return possibleResult;
}
public 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);
}
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)
{
FloatHashSet result = new FloatHashSet();
result.addAll(source);
return result;
}
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 boolean equals(Object obj)
{
if (this == obj)
{
return true;
}
if (!(obj instanceof FloatSet))
{
return false;
}
FloatSet other = (FloatSet) obj;
return this.size() == other.size() && this.containsAll(other.toArray());
}
@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 String toString()
{
return this.makeString("[", ", ", "]");
}
public int size()
{
return this.occupiedWithData + this.zeroToThirtyOneOccupied;
}
public boolean isEmpty()
{
return this.size() == 0;
}
public boolean notEmpty()
{
return this.size() != 0;
}
public String makeString()
{
return this.makeString(", ");
}
public String makeString(String separator)
{
return this.makeString("", separator, "");
}
public String makeString(String start, String separator, String end)
{
Appendable stringBuilder = new StringBuilder();
this.appendString(stringBuilder, start, separator, end);
return stringBuilder.toString();
}
public void appendString(Appendable appendable)
{
this.appendString(appendable, ", ");
}
public void appendString(Appendable appendable, String separator)
{
this.appendString(appendable, "", separator, "");
}
public void appendString(Appendable appendable, String start, String separator, String end)
{
try
{
appendable.append(start);
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);
}
}
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.maxOccupiedWithData())
{
this.rehashAndGrow();
}
return true;
}
public boolean addAll(float... source)
{
int oldSize = this.size();
for (float item : source)
{
this.add(item);
}
return this.size() != oldSize;
}
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;
}
public boolean remove(float value)
{
if (isBetweenZeroAndThirtyOne(value))
{
int initial = this.zeroToThirtyOne;
this.zeroToThirtyOne &= ~(1 << (int) value);
if (this.zeroToThirtyOne == initial)
{
return false;
}
this.zeroToThirtyOneOccupied--;
return true;
}
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++;
if (this.occupiedWithSentinels > this.maxOccupiedWithSentinels())
{
this.rehash();
}
return true;
}
return false;
}
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;
}
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;
}
public boolean retainAll(FloatIterable source)
{
int oldSize = this.size();
final FloatSet sourceSet = source instanceof FloatSet ? (FloatSet) source : source.toSet();
FloatHashSet retained = this.select(new FloatPredicate()
{
public boolean accept(float value)
{
return sourceSet.contains(value);
}
});
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;
}
public boolean retainAll(float... source)
{
return this.retainAll(FloatHashSet.newSetWith(source));
}
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);
}
}
public FloatHashSet with(float element)
{
this.add(element);
return this;
}
public FloatHashSet without(float element)
{
this.remove(element);
return this;
}
public FloatHashSet withAll(FloatIterable elements)
{
this.addAll(elements.toArray());
return this;
}
public FloatHashSet withoutAll(FloatIterable elements)
{
this.removeAll(elements);
return this;
}
public MutableFloatSet asUnmodifiable()
{
return new UnmodifiableFloatSet(this);
}
public MutableFloatSet asSynchronized()
{
return new SynchronizedFloatSet(this);
}
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);
}
public FloatIterator floatIterator()
{
return new InternalFloatIterator();
}
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;
}
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;
}
public boolean containsAll(float... source)
{
for (float item : source)
{
if (!this.contains(item))
{
return false;
}
}
return true;
}
public boolean containsAll(FloatIterable source)
{
for (FloatIterator iterator = source.floatIterator(); iterator.hasNext();)
{
if (!this.contains(iterator.next()))
{
return false;
}
}
return true;
}
public void forEach(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);
}
}
}
public FloatHashSet select(FloatPredicate predicate)
{
FloatHashSet result = new FloatHashSet();
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
result.add(value);
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (float value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
result.add(value);
}
}
}
return result;
}
public MutableFloatSet reject(FloatPredicate predicate)
{
FloatHashSet result = new FloatHashSet();
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
result.add(value);
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (float value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
result.add(value);
}
}
}
return result;
}
public MutableSet collect(FloatToObjectFunction function)
{
MutableSet target = UnifiedSet.newSet(this.size());
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;
}
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;
}
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;
}
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;
}
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;
}
public boolean noneSatisfy(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;
}
public MutableFloatList toList()
{
return FloatArrayList.newList(this);
}
public MutableFloatSet toSet()
{
return FloatHashSet.newSet(this);
}
public MutableFloatBag toBag()
{
return FloatHashBag.newBag(this);
}
public LazyFloatIterable asLazy()
{
return new LazyFloatIterableAdapter(this);
}
public double sum()
{
double result = 0.0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += value;
zeroToThirtyOne &= ~(1 << (int) value);
}
for (float value : this.table)
{
if (isNonSentinel(value))
{
result += value;
}
}
return result;
}
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;
}
public float maxIfEmpty(float defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.max();
}
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;
}
public float minIfEmpty(float defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.min();
}
public double average()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
return this.sum() / (double) this.size();
}
public double median()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
float[] sortedArray = this.toSortedArray();
int middleIndex = sortedArray.length >> 1;
if (sortedArray.length > 1 && (sortedArray.length & 1) == 0)
{
float first = sortedArray[middleIndex];
float second = sortedArray[middleIndex - 1];
return ((double) first + (double) second) / 2.0;
}
return (double) sortedArray[middleIndex];
}
public float[] toSortedArray()
{
float[] array = this.toArray();
Arrays.sort(array);
return array;
}
public MutableFloatList toSortedList()
{
return FloatArrayList.newList(this).sortThis();
}
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);
}
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);
}
}
}
public void readExternal(ObjectInput in) throws IOException
{
int size = in.readInt();
for (int i = 0; i < size; i++)
{
this.add(in.readFloat());
}
}
public T injectInto(T injectedValue, ObjectFloatToObjectFunction 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;
}
/**
* 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 rehash()
{
this.rehash(this.table.length);
}
private void rehashAndGrow()
{
this.rehash(this.table.length << 1);
}
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]);
}
}
}
private void allocateTable(int sizeToAllocate)
{
this.table = new float[sizeToAllocate];
}
// exposed for testing
int probe(float element)
{
int index = this.spread(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;
int nextIndex = index;
int probe = 17;
// loop until an empty slot is reached
while (true)
{
// Probe algorithm: 17 * n * (n+1) / 2 where n = number of collisions
nextIndex = (nextIndex + probe) & this.table.length - 1;
probe += 17;
if (Float.compare(this.table[nextIndex], element) == 0)
{
return nextIndex;
}
if (Float.compare(this.table[nextIndex], REMOVED) == 0)
{
if (removedIndex == -1)
{
removedIndex = nextIndex;
}
}
else if (Float.compare(this.table[nextIndex], EMPTY) == 0)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
}
}
// exposed for testing
int spread(float element)
{
int code = Float.floatToIntBits(element);
code ^= 61 ^ (code >> 16);
code += code << 3;
code ^= code >> 4;
code *= 0x27d4eb2d;
code ^= code >> 15;
return code & (this.table.length - 1);
}
private void copyTable()
{
this.copyOnWrite = false;
float[] copy = new float[this.table.length];
System.arraycopy(this.table, 0, copy, 0,
Math.min(this.table.length, this.table.length));
this.table = copy;
}
private int maxOccupiedWithData()
{
int capacity = this.table.length;
// need at least one free slot for open addressing
return Math.min(capacity - 1, capacity / OCCUPIED_DATA_RATIO);
}
private int maxOccupiedWithSentinels()
{
return this.table.length / OCCUPIED_SENTINEL_RATIO;
}
private static boolean isNonSentinel(float value)
{
return Float.compare(value, EMPTY) != 0 && Float.compare(value, REMOVED) != 0;
}
private static final class ImmutableFloatHashSet implements ImmutableFloatSet, 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 boolean equals(Object obj)
{
if (this == obj)
{
return true;
}
if (!(obj instanceof FloatSet))
{
return false;
}
FloatSet other = (FloatSet) obj;
return this.size() == other.size() && this.containsAll(other.toArray());
}
@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 String toString()
{
return this.makeString("[", ", ", "]");
}
public ImmutableFloatSet newWith(float element)
{
return FloatHashSet.newSet(this).with(element).toImmutable();
}
public ImmutableFloatSet newWithout(float element)
{
return FloatHashSet.newSet(this).without(element).toImmutable();
}
public ImmutableFloatSet newWithAll(FloatIterable elements)
{
return FloatHashSet.newSet(this).withAll(elements).toImmutable();
}
public ImmutableFloatSet newWithoutAll(FloatIterable elements)
{
return FloatHashSet.newSet(this).withoutAll(elements).toImmutable();
}
public int size()
{
return this.occupied + this.zeroToThirtyOneOccupied;
}
public boolean isEmpty()
{
return this.size() == 0;
}
public boolean notEmpty()
{
return this.size() != 0;
}
public String makeString()
{
return this.makeString(", ");
}
public String makeString(String separator)
{
return this.makeString("", separator, "");
}
public String makeString(String start, String separator, String end)
{
Appendable stringBuilder = new StringBuilder();
this.appendString(stringBuilder, start, separator, end);
return stringBuilder.toString();
}
public void appendString(Appendable appendable)
{
this.appendString(appendable, ", ");
}
public void appendString(Appendable appendable, String separator)
{
this.appendString(appendable, "", separator, "");
}
public void appendString(Appendable appendable, String start, String separator, String end)
{
try
{
appendable.append(start);
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);
}
}
public FloatIterator floatIterator()
{
return new InternalFloatIterator();
}
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;
}
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;
}
public boolean containsAll(float... source)
{
for (float item : source)
{
if (!this.contains(item))
{
return false;
}
}
return true;
}
public boolean containsAll(FloatIterable source)
{
for (FloatIterator iterator = source.floatIterator(); iterator.hasNext();)
{
if (!this.contains(iterator.next()))
{
return false;
}
}
return true;
}
public void forEach(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);
}
}
}
public ImmutableFloatSet select(FloatPredicate predicate)
{
FloatHashSet result = new FloatHashSet();
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
result.add(value);
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (float value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
result.add(value);
}
}
}
return result.toImmutable();
}
public ImmutableFloatSet reject(FloatPredicate predicate)
{
FloatHashSet result = new FloatHashSet();
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
result.add(value);
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (float value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
result.add(value);
}
}
}
return result.toImmutable();
}
public ImmutableSet collect(FloatToObjectFunction function)
{
MutableSet target = UnifiedSet.newSet(this.size());
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.toImmutable();
}
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;
}
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;
}
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;
}
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;
}
public boolean noneSatisfy(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;
}
public MutableFloatList toList()
{
return FloatArrayList.newList(this);
}
public MutableFloatSet toSet()
{
return FloatHashSet.newSet(this);
}
public MutableFloatBag toBag()
{
return FloatHashBag.newBag(this);
}
public LazyFloatIterable asLazy()
{
return new LazyFloatIterableAdapter(this);
}
public double sum()
{
double result = 0.0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
float value = (float) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += value;
zeroToThirtyOne &= ~(1 << (int) value);
}
for (float value : this.table)
{
if (isNonSentinel(value))
{
result += value;
}
}
return result;
}
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;
}
public float maxIfEmpty(float defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.max();
}
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;
}
public float minIfEmpty(float defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.min();
}
public double average()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
return this.sum() / (double) this.size();
}
public double median()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
float[] sortedArray = this.toSortedArray();
int middleIndex = sortedArray.length >> 1;
if (sortedArray.length > 1 && (sortedArray.length & 1) == 0)
{
float first = sortedArray[middleIndex];
float second = sortedArray[middleIndex - 1];
return ((double) first + (double) second) / 2.0;
}
return (double) sortedArray[middleIndex];
}
public float[] toSortedArray()
{
float[] array = this.toArray();
Arrays.sort(array);
return array;
}
public MutableFloatList toSortedList()
{
return FloatArrayList.newList(this).sortThis();
}
public T injectInto(T injectedValue, ObjectFloatToObjectFunction 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;
}
public FloatSet freeze()
{
return this;
}
public ImmutableFloatSet toImmutable()
{
return this;
}
private Object writeReplace()
{
return new ImmutableFloatSetSerializationProxy(this);
}
// exposed for testing
int probe(float element)
{
int index = this.spread(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;
int nextIndex = index;
int probe = 17;
// loop until an empty slot is reached
while (true)
{
// Probe algorithm: 17 * n * (n+1) / 2 where n = number of collisions
nextIndex = (nextIndex + probe) & this.table.length - 1;
probe += 17;
if (Float.compare(this.table[nextIndex], element) == 0)
{
return nextIndex;
}
if (Float.compare(this.table[nextIndex], REMOVED) == 0)
{
if (removedIndex == -1)
{
removedIndex = nextIndex;
}
}
else if (Float.compare(this.table[nextIndex], EMPTY) == 0)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
}
}
// exposed for testing
int spread(float element)
{
int code = Float.floatToIntBits(element);
code ^= 61 ^ (code >> 16);
code += code << 3;
code ^= code >> 4;
code *= 0x27d4eb2d;
code ^= code >> 15;
return code & (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 FloatIterator
{
private int count;
private int position;
private float zeroToThirtyOne;
public boolean hasNext()
{
return this.count < FloatHashSet.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 (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;
}
}
}
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