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.CharIterable;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.block.function.primitive.CharToObjectFunction;
import org.eclipse.collections.api.block.function.primitive.ObjectCharToObjectFunction;
import org.eclipse.collections.api.block.predicate.primitive.CharPredicate;
import org.eclipse.collections.api.block.procedure.primitive.CharProcedure;
import org.eclipse.collections.api.collection.primitive.MutableCharCollection;
import org.eclipse.collections.api.iterator.CharIterator;
import org.eclipse.collections.api.iterator.MutableCharIterator;
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.ImmutableCharSet;
import org.eclipse.collections.api.set.primitive.MutableCharSet;
import org.eclipse.collections.api.set.primitive.CharSet;
import org.eclipse.collections.impl.factory.primitive.CharSets;
import org.eclipse.collections.impl.set.immutable.primitive.ImmutableCharSetSerializationProxy;
import org.eclipse.collections.impl.set.mutable.UnifiedSet;
import org.eclipse.collections.impl.SpreadFunctions;
import org.eclipse.collections.impl.set.immutable.primitive.AbstractImmutableCharSet;
import org.eclipse.collections.impl.set.primitive.AbstractCharSet;
public class CharHashSet extends AbstractCharSet implements MutableCharSet, 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 = 16;
private static final char EMPTY = (char) 0;
private static final char REMOVED = (char) 1;
private static final int CACHE_LINE_SIZE = 64;
private static final int KEY_SIZE = 2;
private static final int INITIAL_LINEAR_PROBE = CACHE_LINE_SIZE / KEY_SIZE / 2;
private char[] table;
private int occupiedWithData;
private int occupiedWithSentinels;
private int zeroToThirtyOne;
private int zeroToThirtyOneOccupied;
private transient boolean copyOnWrite;
public CharHashSet()
{
this.allocateTable(DEFAULT_INITIAL_CAPACITY);
}
public CharHashSet(int initialCapacity)
{
if (initialCapacity < 0)
{
throw new IllegalArgumentException("initial capacity cannot be less than 0");
}
int capacity = this.smallestPowerOfTwoGreaterThan(this.fastCeil(initialCapacity * OCCUPIED_DATA_RATIO));
this.allocateTable(capacity);
}
public CharHashSet(char... elements)
{
this();
this.addAll(elements);
}
public CharHashSet(CharHashSet 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;
}
private int fastCeil(float v)
{
int possibleResult = (int) v;
if (v - possibleResult > 0.0F)
{
possibleResult++;
}
return possibleResult;
}
public static CharHashSet newSet(CharIterable source)
{
if (source instanceof CharHashSet)
{
return new CharHashSet((CharHashSet) source);
}
return CharHashSet.newSetWith(source.toArray());
}
public static CharHashSet newSetWith(char... source)
{
return new CharHashSet(source);
}
private static boolean isBetweenZeroAndThirtyOne(char value)
{
return value >= '\0' && value <= (char) 31;
}
@Override
public int hashCode()
{
int result = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += (int) value;
zeroToThirtyOne &= ~(1 << value);
}
if (this.table != null)
{
for (int i = 0; i < this.table.length; i++)
{
if (isNonSentinel(this.table[i]))
{
result += (int) 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)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (count > 0)
{
appendable.append(separator);
}
count++;
appendable.append(String.valueOf(value));
zeroToThirtyOne &= ~(1 << value);
}
for (char 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(char element)
{
if (isBetweenZeroAndThirtyOne(element))
{
int initial = this.zeroToThirtyOne;
this.zeroToThirtyOne |= 1 << element;
if (this.zeroToThirtyOne != initial)
{
this.zeroToThirtyOneOccupied++;
return true;
}
return false;
}
int index = this.probe(element);
if (this.table[index] == element)
{
return false;
}
if (this.copyOnWrite)
{
this.copyTable();
}
if (this.table[index] == REMOVED)
{
--this.occupiedWithSentinels;
}
this.table[index] = element;
++this.occupiedWithData;
if (this.occupiedWithData > this.maxOccupiedWithData())
{
this.rehashAndGrow();
}
return true;
}
@Override
public boolean addAll(char... source)
{
int oldSize = this.size();
for (char item : source)
{
this.add(item);
}
return this.size() != oldSize;
}
@Override
public boolean addAll(CharIterable source)
{
if (source.isEmpty())
{
return false;
}
int oldSize = this.size();
if (source instanceof CharHashSet)
{
CharHashSet hashSet = (CharHashSet) source;
this.zeroToThirtyOne |= hashSet.zeroToThirtyOne;
this.zeroToThirtyOneOccupied = Integer.bitCount(this.zeroToThirtyOne);
for (char item : hashSet.table)
{
if (isNonSentinel(item))
{
this.add(item);
}
}
}
else
{
CharIterator iterator = source.charIterator();
while (iterator.hasNext())
{
char item = iterator.next();
this.add(item);
}
}
return this.size() != oldSize;
}
@Override
public boolean remove(char value)
{
if (isBetweenZeroAndThirtyOne(value))
{
return this.removeZeroToThirtyOne(value);
}
int index = this.probe(value);
if (this.table[index] == value)
{
if (this.copyOnWrite)
{
this.copyTable();
}
this.table[index] = REMOVED;
this.occupiedWithData--;
this.occupiedWithSentinels++;
if (this.occupiedWithSentinels > this.maxOccupiedWithSentinels())
{
this.rehash();
}
return true;
}
return false;
}
private boolean removeZeroToThirtyOne(char value)
{
int initial = this.zeroToThirtyOne;
this.zeroToThirtyOne &= ~(1 << value);
if (this.zeroToThirtyOne == initial)
{
return false;
}
this.zeroToThirtyOneOccupied--;
return true;
}
@Override
public boolean removeAll(CharIterable source)
{
if (source.isEmpty())
{
return false;
}
int oldSize = this.size();
if (source instanceof CharHashSet)
{
CharHashSet hashSet = (CharHashSet) source;
this.zeroToThirtyOne &= ~hashSet.zeroToThirtyOne;
this.zeroToThirtyOneOccupied = Integer.bitCount(this.zeroToThirtyOne);
for (char item : hashSet.table)
{
if (isNonSentinel(item))
{
this.remove(item);
}
}
}
else
{
CharIterator iterator = source.charIterator();
while (iterator.hasNext())
{
char item = iterator.next();
this.remove(item);
}
}
return this.size() != oldSize;
}
@Override
public boolean removeAll(char... source)
{
if (source.length == 0)
{
return false;
}
int oldSize = this.size();
for (char item : source)
{
this.remove(item);
}
return this.size() != oldSize;
}
@Override
public boolean retainAll(CharIterable source)
{
int oldSize = this.size();
final CharSet sourceSet = source instanceof CharSet ? (CharSet) source : source.toSet();
CharHashSet 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(char... source)
{
return this.retainAll(CharHashSet.newSetWith(source));
}
@Override
public void clear()
{
this.zeroToThirtyOneOccupied = 0;
this.occupiedWithData = 0;
this.occupiedWithSentinels = 0;
this.zeroToThirtyOne = 0;
if (this.copyOnWrite)
{
this.table = new char[this.table.length];
this.copyOnWrite = false;
}
else
{
Arrays.fill(this.table, EMPTY);
}
}
@Override
public CharHashSet with(char element)
{
this.add(element);
return this;
}
@Override
public CharHashSet without(char element)
{
this.remove(element);
return this;
}
@Override
public CharHashSet withAll(CharIterable elements)
{
this.addAll(elements.toArray());
return this;
}
@Override
public CharHashSet withoutAll(CharIterable elements)
{
this.removeAll(elements);
return this;
}
@Override
public MutableCharSet asUnmodifiable()
{
return new UnmodifiableCharSet(this);
}
@Override
public MutableCharSet asSynchronized()
{
return new SynchronizedCharSet(this);
}
@Override
public ImmutableCharSet toImmutable()
{
if (this.size() == 0)
{
return CharSets.immutable.with();
}
if (this.size() == 1)
{
return CharSets.immutable.with(this.charIterator().next());
}
CharHashSet mutableSet = CharHashSet.newSetWith(this.toArray());
return new ImmutableCharHashSet(mutableSet.table, mutableSet.occupiedWithData, mutableSet.zeroToThirtyOne, mutableSet.zeroToThirtyOneOccupied);
}
@Override
public MutableCharIterator charIterator()
{
return new InternalCharIterator();
}
@Override
public char[] toArray()
{
char[] array = new char[this.size()];
int j = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
array[j] = value;
j++;
zeroToThirtyOne &= ~(1 << 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(char value)
{
if (isBetweenZeroAndThirtyOne(value))
{
int temp = this.zeroToThirtyOne;
return ((temp >>> value) & 1) != 0;
}
return this.table[this.probe(value)] == value;
}
@Override
public void forEach(CharProcedure procedure)
{
this.each(procedure);
}
@Override
public void each(CharProcedure procedure)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
procedure.value(value);
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
procedure.value(value);
}
}
}
@Override
public CharHashSet select(CharPredicate predicate)
{
return this.select(predicate, new CharHashSet());
}
@Override
public <R extends MutableCharCollection> R select(CharPredicate predicate, R target)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
target.add(value);
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
target.add(value);
}
}
}
return target;
}
@Override
public CharHashSet reject(CharPredicate predicate)
{
return this.reject(predicate, new CharHashSet());
}
@Override
public <R extends MutableCharCollection> R reject(CharPredicate predicate, R target)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
target.add(value);
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
target.add(value);
}
}
}
return target;
}
@Override
public <V> MutableSet<V> collect(CharToObjectFunction<? extends V> function)
{
return this.collect(function, UnifiedSet.newSet(this.size()));
}
@Override
public <V, R extends Collection<V>> R collect(CharToObjectFunction<? extends V> function, R target)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
target.add(function.valueOf(value));
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
target.add(function.valueOf(value));
}
}
return target;
}
@Override
public char detectIfNone(CharPredicate predicate, char ifNone)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return value;
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return value;
}
}
}
return ifNone;
}
@Override
public int count(CharPredicate predicate)
{
int count = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
count++;
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
count++;
}
}
}
return count;
}
@Override
public boolean anySatisfy(CharPredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return true;
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return true;
}
}
}
return false;
}
@Override
public boolean allSatisfy(CharPredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
return false;
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
return false;
}
}
}
return true;
}
@Override
public boolean noneSatisfy(CharPredicate predicate)
{
return !this.anySatisfy(predicate);
}
@Override
public long sum()
{
long result = 0L;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += value;
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
result += value;
}
}
return result;
}
@Override
public char max()
{
if (this.isEmpty())
{
throw new NoSuchElementException();
}
char max = (char) (31 - Integer.numberOfLeadingZeros(this.zeroToThirtyOne));
boolean isMaxSet = this.zeroToThirtyOneOccupied != 0;
for (char value : this.table)
{
if (isNonSentinel(value) && (!isMaxSet || max < value))
{
max = value;
isMaxSet = true;
}
}
return max;
}
@Override
public char min()
{
if (this.isEmpty())
{
throw new NoSuchElementException();
}
char min = (char) Integer.numberOfTrailingZeros(this.zeroToThirtyOne);
boolean isMinSet = this.zeroToThirtyOneOccupied != 0;
for (char value : this.table)
{
if (isNonSentinel(value) && (!isMinSet || value < min))
{
min = value;
isMinSet = true;
}
}
return min;
}
@Override
public CharSet freeze()
{
if (this.size() == 0)
{
return CharSets.immutable.with();
}
if (this.size() == 1)
{
return CharSets.immutable.with(this.charIterator().next());
}
this.copyOnWrite = true;
return new ImmutableCharHashSet(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)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
out.writeChar(value);
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
out.writeChar(value);
}
}
}
@Override
public void readExternal(ObjectInput in) throws IOException
{
int size = in.readInt();
for (int i = 0; i < size; i++)
{
this.add(in.readChar());
}
}
@Override
public <T> T injectInto(T injectedValue, ObjectCharToObjectFunction<? super T, ? extends T> function)
{
T result = injectedValue;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result = function.valueOf(result, value);
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
result = function.valueOf(result, value);
}
}
return result;
}
@Override
public RichIterable<CharIterable> chunk(int size)
{
if (size <= 0)
{
throw new IllegalArgumentException("Size for groups must be positive but was: " + size);
}
MutableList<CharIterable> result = Lists.mutable.empty();
if (this.notEmpty())
{
if (this.size() <= size)
{
result.add(CharSets.mutable.withAll(this));
}
else
{
CharIterator iterator = this.charIterator();
while (iterator.hasNext())
{
MutableCharSet batch = CharSets.mutable.empty();
for (int i = 0; i < size && iterator.hasNext(); i++)
{
batch.add(iterator.next());
}
result.add(batch);
}
}
}
return result;
}
public CharHashSet newEmpty()
{
return new CharHashSet();
}
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;
char[] 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 char[sizeToAllocate];
}
int probe(char element)
{
int index = this.spreadAndMask(element);
char valueAtIndex = this.table[index];
if (valueAtIndex == element || valueAtIndex == EMPTY)
{
return index;
}
int removedIndex = valueAtIndex == REMOVED ? index : -1;
for (int i = 1; i < INITIAL_LINEAR_PROBE; i++)
{
int nextIndex = (index + i) & (this.table.length - 1);
valueAtIndex = this.table[nextIndex];
if (valueAtIndex == element)
{
return nextIndex;
}
if (valueAtIndex == EMPTY)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
if (valueAtIndex == REMOVED && removedIndex == -1)
{
removedIndex = nextIndex;
}
}
return this.probeTwo(element, removedIndex);
}
int probeTwo(char 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);
char valueAtIndex = this.table[nextIndex];
if (valueAtIndex == element)
{
return nextIndex;
}
if (valueAtIndex == EMPTY)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
if (valueAtIndex == REMOVED && removedIndex == -1)
{
removedIndex = nextIndex;
}
}
return this.probeThree(element, removedIndex);
}
int probeThree(char element, int removedIndex)
{
int nextIndex = Integer.reverse(SpreadFunctions.charSpreadOne(element));
int spreadTwo = Integer.reverse(SpreadFunctions.charSpreadTwo(element)) | 1;
while (true)
{
nextIndex = this.mask(nextIndex + spreadTwo);
char valueAtIndex = this.table[nextIndex];
if (valueAtIndex == element)
{
return nextIndex;
}
if (valueAtIndex == EMPTY)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
if (valueAtIndex == REMOVED && removedIndex == -1)
{
removedIndex = nextIndex;
}
}
}
int spreadAndMask(char element)
{
int code = SpreadFunctions.charSpreadOne(element);
return this.mask(code);
}
int spreadTwoAndMask(char element)
{
int code = SpreadFunctions.charSpreadTwo(element);
return this.mask(code);
}
private int mask(int spread)
{
return spread & (this.table.length - 1);
}
private void copyTable()
{
this.copyOnWrite = false;
char[] copy = new char[this.table.length];
System.arraycopy(this.table, 0, copy, 0, this.table.length);
this.table = copy;
}
private int maxOccupiedWithData()
{
int capacity = this.table.length;
return Math.min(capacity - 1, capacity / OCCUPIED_DATA_RATIO);
}
private int maxOccupiedWithSentinels()
{
return this.table.length / OCCUPIED_SENTINEL_RATIO;
}
private static boolean isNonSentinel(char value)
{
return value != EMPTY && value != REMOVED;
}
private static final class ImmutableCharHashSet extends AbstractImmutableCharSet implements Serializable
{
private static final long serialVersionUID = 1L;
private final char[] table;
private final int occupied;
private final int zeroToThirtyOne;
private final int zeroToThirtyOneOccupied;
private ImmutableCharHashSet(char[] 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 CharSets.immutable.with() to instantiate an optimized collection");
}
}
public static ImmutableCharSet newSetWith(char... elements)
{
return CharHashSet.newSetWith(elements).toImmutable();
}
@Override
public int hashCode()
{
int result = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += (int) value;
zeroToThirtyOne &= ~(1 << value);
}
if (this.table != null)
{
for (int i = 0; i < this.table.length; i++)
{
if (isNonSentinel(this.table[i]))
{
result += (int) 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)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (count > 0)
{
appendable.append(separator);
}
count++;
appendable.append(String.valueOf(value));
zeroToThirtyOne &= ~(1 << value);
}
for (char 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 CharIterator charIterator()
{
return new InternalCharIterator();
}
@Override
public char[] toArray()
{
char[] array = new char[this.size()];
int j = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
array[j] = value;
j++;
zeroToThirtyOne &= ~(1 << 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(char value)
{
if (isBetweenZeroAndThirtyOne(value))
{
int temp = this.zeroToThirtyOne;
return ((temp >>> value) & 1) != 0;
}
return this.table[this.probe(value)] == value;
}
@Override
public void forEach(CharProcedure procedure)
{
this.each(procedure);
}
@Override
public void each(CharProcedure procedure)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
procedure.value(value);
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
procedure.value(value);
}
}
}
@Override
public ImmutableCharSet select(CharPredicate predicate)
{
return this.select(predicate, new CharHashSet()).toImmutable();
}
@Override
public ImmutableCharSet reject(CharPredicate predicate)
{
return this.reject(predicate, new CharHashSet()).toImmutable();
}
@Override
public <V> ImmutableSet<V> collect(CharToObjectFunction<? extends V> function)
{
MutableSet<V> set = this.collect(function, UnifiedSet.newSet(this.size()));
return set.toImmutable();
}
@Override
public char detectIfNone(CharPredicate predicate, char ifNone)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return value;
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return value;
}
}
}
return ifNone;
}
@Override
public int count(CharPredicate predicate)
{
int count = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
count++;
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
count++;
}
}
}
return count;
}
@Override
public boolean anySatisfy(CharPredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return true;
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return true;
}
}
}
return false;
}
@Override
public boolean allSatisfy(CharPredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
return false;
}
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
return false;
}
}
}
return true;
}
@Override
public boolean noneSatisfy(CharPredicate predicate)
{
return !this.anySatisfy(predicate);
}
@Override
public long sum()
{
long result = 0L;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += value;
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
result += value;
}
}
return result;
}
@Override
public char max()
{
if (this.isEmpty())
{
throw new NoSuchElementException();
}
char max = (char) (31 - Integer.numberOfLeadingZeros(this.zeroToThirtyOne));
boolean isMaxSet = this.zeroToThirtyOneOccupied != 0;
for (char value : this.table)
{
if (isNonSentinel(value) && (!isMaxSet || max < value))
{
max = value;
isMaxSet = true;
}
}
return max;
}
@Override
public char min()
{
if (this.isEmpty())
{
throw new NoSuchElementException();
}
char min = (char) Integer.numberOfTrailingZeros(this.zeroToThirtyOne);
boolean isMinSet = this.zeroToThirtyOneOccupied != 0;
for (char value : this.table)
{
if (isNonSentinel(value) && (!isMinSet || value < min))
{
min = value;
isMinSet = true;
}
}
return min;
}
@Override
public <T> T injectInto(T injectedValue, ObjectCharToObjectFunction<? super T, ? extends T> function)
{
T result = injectedValue;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
char value = (char) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result = function.valueOf(result, value);
zeroToThirtyOne &= ~(1 << value);
}
for (char value : this.table)
{
if (isNonSentinel(value))
{
result = function.valueOf(result, value);
}
}
return result;
}
private Object writeReplace()
{
return new ImmutableCharSetSerializationProxy(this);
}
int probe(char element)
{
int index = this.spreadAndMask(element);
char valueAtIndex = this.table[index];
if (valueAtIndex == element || valueAtIndex == EMPTY)
{
return index;
}
int removedIndex = valueAtIndex == REMOVED ? index : -1;
for (int i = 1; i < INITIAL_LINEAR_PROBE; i++)
{
int nextIndex = (index + i) & (this.table.length - 1);
valueAtIndex = this.table[nextIndex];
if (valueAtIndex == element)
{
return nextIndex;
}
if (valueAtIndex == EMPTY)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
if (valueAtIndex == REMOVED && removedIndex == -1)
{
removedIndex = nextIndex;
}
}
return this.probeTwo(element, removedIndex);
}
int probeTwo(char 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);
char valueAtIndex = this.table[nextIndex];
if (valueAtIndex == element)
{
return nextIndex;
}
if (valueAtIndex == EMPTY)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
if (valueAtIndex == REMOVED && removedIndex == -1)
{
removedIndex = nextIndex;
}
}
return this.probeThree(element, removedIndex);
}
int probeThree(char element, int removedIndex)
{
int nextIndex = Integer.reverse(SpreadFunctions.charSpreadOne(element));
int spreadTwo = Integer.reverse(SpreadFunctions.charSpreadTwo(element)) | 1;
while (true)
{
nextIndex = this.mask(nextIndex + spreadTwo);
char valueAtIndex = this.table[nextIndex];
if (valueAtIndex == element)
{
return nextIndex;
}
if (valueAtIndex == EMPTY)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
if (valueAtIndex == REMOVED && removedIndex == -1)
{
removedIndex = nextIndex;
}
}
}
int spreadAndMask(char element)
{
int code = SpreadFunctions.charSpreadOne(element);
return this.mask(code);
}
int spreadTwoAndMask(char element)
{
int code = SpreadFunctions.charSpreadTwo(element);
return this.mask(code);
}
private int mask(int spread)
{
return spread & (this.table.length - 1);
}
private class InternalCharIterator implements CharIterator
{
private int count;
private int position;
private char zeroToThirtyOne;
public boolean hasNext()
{
return this.count < ImmutableCharHashSet.this.size();
}
public char next()
{
if (!this.hasNext())
{
throw new NoSuchElementException("next() called, but the iterator is exhausted");
}
this.count++;
while (this.zeroToThirtyOne < 32)
{
if (ImmutableCharHashSet.this.contains(this.zeroToThirtyOne))
{
char result = this.zeroToThirtyOne;
this.zeroToThirtyOne++;
return result;
}
this.zeroToThirtyOne++;
}
char[] table = ImmutableCharHashSet.this.table;
while (!isNonSentinel(table[this.position]))
{
this.position++;
}
char result = table[this.position];
this.position++;
return result;
}
}
}
private class InternalCharIterator implements MutableCharIterator
{
private int count;
private int position;
private char zeroToThirtyOne;
@Override
public boolean hasNext()
{
return this.count < CharHashSet.this.size();
}
@Override
public char next()
{
if (!this.hasNext())
{
throw new NoSuchElementException("next() called, but the iterator is exhausted");
}
this.count++;
while (this.zeroToThirtyOne < 32)
{
if (CharHashSet.this.contains(this.zeroToThirtyOne))
{
char result = this.zeroToThirtyOne;
this.zeroToThirtyOne++;
return result;
}
this.zeroToThirtyOne++;
}
char[] table = CharHashSet.this.table;
while (!isNonSentinel(table[this.position]))
{
this.position++;
}
char result = table[this.position];
this.position++;
return result;
}
@Override
public void remove()
{
if (this.count == 0)
{
throw new IllegalStateException();
}
char removeValue;
if (this.zeroToThirtyOne <= (char) 32 && this.position == 0)
{
if (CharHashSet.this.zeroToThirtyOne != (CharHashSet.this.zeroToThirtyOne | 1 << (this.zeroToThirtyOne - 1)))
{
throw new IllegalStateException();
}
removeValue = (char) (this.zeroToThirtyOne - 1);
}
else if (CharHashSet.this.table[this.position - 1] == REMOVED)
{
throw new IllegalStateException();
}
else
{
removeValue = CharHashSet.this.table[this.position - 1];
}
if (CharHashSet.isBetweenZeroAndThirtyOne(removeValue))
{
CharHashSet.this.removeZeroToThirtyOne(removeValue);
}
else if (CharHashSet.this.table[this.position - 1] == removeValue)
{
if (CharHashSet.this.copyOnWrite)
{
CharHashSet.this.copyTable();
}
CharHashSet.this.table[position - 1] = REMOVED;
CharHashSet.this.occupiedWithData--;
CharHashSet.this.occupiedWithSentinels++;
}
this.count--;
}
}
}
CharHashSet
serialVersionUID: long
probe(char): int
https://github.com/eclipse/eclipse-collections/eclipse-collections: Eclipse 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.