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

package org.eclipse.collections.impl.set.immutable.primitive;

import java.io.IOException;
import java.io.Serializable;
import java.util.NoSuchElementException;

import org.eclipse.collections.api.BooleanIterable;
import org.eclipse.collections.api.LazyBooleanIterable;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.bag.primitive.MutableBooleanBag;
import org.eclipse.collections.api.block.function.primitive.BooleanToObjectFunction;
import org.eclipse.collections.api.block.function.primitive.ObjectBooleanToObjectFunction;
import org.eclipse.collections.api.block.predicate.primitive.BooleanPredicate;
import org.eclipse.collections.api.block.procedure.primitive.BooleanProcedure;
import org.eclipse.collections.api.factory.Lists;
import org.eclipse.collections.api.factory.Sets;
import org.eclipse.collections.api.iterator.BooleanIterator;
import org.eclipse.collections.api.list.primitive.MutableBooleanList;
import org.eclipse.collections.api.set.ImmutableSet;
import org.eclipse.collections.api.set.primitive.BooleanSet;
import org.eclipse.collections.api.set.primitive.ImmutableBooleanSet;
import org.eclipse.collections.api.set.primitive.MutableBooleanSet;
import org.eclipse.collections.impl.bag.mutable.primitive.BooleanHashBag;
import org.eclipse.collections.impl.lazy.primitive.LazyBooleanIterableAdapter;
import org.eclipse.collections.impl.list.mutable.primitive.BooleanArrayList;
import org.eclipse.collections.impl.set.mutable.primitive.BooleanHashSet;

final class ImmutableFalseSet implements ImmutableBooleanSet, Serializable
{
    static final ImmutableBooleanSet INSTANCE = new ImmutableFalseSet();

    private ImmutableFalseSet()
    {
        // Singleton
    }

    @Override
    public ImmutableBooleanSet newWith(boolean element)
    {
        return element ? ImmutableTrueFalseSet.INSTANCE : this;
    }

    @Override
    public ImmutableBooleanSet newWithout(boolean element)
    {
        return element ? this : ImmutableBooleanEmptySet.INSTANCE;
    }

    @Override
    public ImmutableBooleanSet newWithAll(BooleanIterable elements)
    {
        ImmutableBooleanSet result = this;
        BooleanIterator booleanIterator = elements.booleanIterator();
        while (booleanIterator.hasNext())
        {
            result = result.newWith(booleanIterator.next());
        }
        return result;
    }

    @Override
    public ImmutableBooleanSet newWithoutAll(BooleanIterable elements)
    {
        return elements.contains(false) ? ImmutableBooleanEmptySet.INSTANCE : this;
    }

    @Override
    public BooleanIterator booleanIterator()
    {
        return new FalseIterator();
    }

    @Override
    public void forEach(BooleanProcedure procedure)
    {
        this.each(procedure);
    }

    
Since:7.0.
/** * @since 7.0. */
@Override public void each(BooleanProcedure procedure) { procedure.value(false); } @Override public <T> T injectInto(T injectedValue, ObjectBooleanToObjectFunction<? super T, ? extends T> function) { return function.valueOf(injectedValue, false); } @Override public RichIterable<BooleanIterable> chunk(int size) { if (size <= 0) { throw new IllegalArgumentException("Size for groups must be positive but was: " + size); } return Lists.immutable.with(this); } @Override public int count(BooleanPredicate predicate) { return predicate.accept(false) ? 1 : 0; } @Override public boolean anySatisfy(BooleanPredicate predicate) { return predicate.accept(false); } @Override public boolean allSatisfy(BooleanPredicate predicate) { return predicate.accept(false); } @Override public boolean noneSatisfy(BooleanPredicate predicate) { return !predicate.accept(false); } @Override public ImmutableBooleanSet select(BooleanPredicate predicate) { return predicate.accept(false) ? this : ImmutableBooleanEmptySet.INSTANCE; } @Override public ImmutableBooleanSet reject(BooleanPredicate predicate) { return predicate.accept(false) ? ImmutableBooleanEmptySet.INSTANCE : this; } @Override public boolean detectIfNone(BooleanPredicate predicate, boolean ifNone) { return !predicate.accept(false) && ifNone; } @Override public <V> ImmutableSet<V> collect(BooleanToObjectFunction<? extends V> function) { return Sets.immutable.with(function.valueOf(false)); } @Override public boolean[] toArray() { return new boolean[]{false}; } @Override public boolean[] toArray(boolean[] target) { if (target.length < 1) { target = new boolean[]{false}; } else { target[0] = false; } return target; } @Override public boolean contains(boolean value) { return !value; } @Override public boolean containsAll(boolean... source) { for (boolean item : source) { if (item) { return false; } } return true; } @Override public boolean containsAll(BooleanIterable source) { for (BooleanIterator iterator = source.booleanIterator(); iterator.hasNext(); ) { if (iterator.next()) { return false; } } return true; } @Override public BooleanSet freeze() { return this; } @Override public ImmutableBooleanSet toImmutable() { return this; } @Override public int size() { return 1; } @Override public boolean isEmpty() { return false; } @Override public boolean notEmpty() { return true; } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof BooleanSet)) { return false; } BooleanSet other = (BooleanSet) obj; return other.contains(false) && !other.contains(true); } @Override public int hashCode() { return 1237; } @Override public String toString() { return "[false]"; } @Override public String makeString() { return "false"; } @Override public String makeString(String separator) { return "false"; } @Override public String makeString(String start, String separator, String end) { return start + "false" + end; } @Override public void appendString(Appendable appendable) { try { appendable.append("false"); } catch (IOException e) { throw new RuntimeException(e); } } @Override public void appendString(Appendable appendable, String separator) { try { appendable.append("false"); } catch (IOException e) { throw new RuntimeException(e); } } @Override public void appendString(Appendable appendable, String start, String separator, String end) { try { appendable.append(start); appendable.append("false"); appendable.append(end); } catch (IOException e) { throw new RuntimeException(e); } } @Override public MutableBooleanList toList() { return BooleanArrayList.newList(this); } @Override public MutableBooleanSet toSet() { return BooleanHashSet.newSet(this); } @Override public MutableBooleanBag toBag() { return BooleanHashBag.newBag(this); } @Override public LazyBooleanIterable asLazy() { return new LazyBooleanIterableAdapter(this); } private static final class FalseIterator implements BooleanIterator { private int currentIndex; @Override public boolean next() { if (this.currentIndex == 0) { this.currentIndex++; return false; } throw new NoSuchElementException(); } @Override public boolean hasNext() { return this.currentIndex == 0; } } private Object writeReplace() { return new ImmutableBooleanSetSerializationProxy(this); } }