// 
// Decompiled by Procyon v0.6.0
// 

package it.unimi.dsi.fastutil.longs;

import java.util.stream.LongStream;
import java.util.stream.Stream;
import java.util.Spliterator;
import java.util.function.LongPredicate;
import java.util.function.LongConsumer;
import java.util.function.Predicate;
import java.util.Collection;
import java.util.function.Consumer;
import java.util.Set;
import java.io.Serializable;
import java.util.Iterator;

public final class LongSets
{
    static final int ARRAY_SET_CUTOFF = 4;
    public static final EmptySet EMPTY_SET;
    static final LongSet UNMODIFIABLE_EMPTY_SET;
    
    private LongSets() {
    }
    
    public static LongSet emptySet() {
        return LongSets.EMPTY_SET;
    }
    
    public static LongSet singleton(final long element) {
        return new Singleton(element);
    }
    
    public static LongSet singleton(final Long element) {
        return new Singleton(element);
    }
    
    public static LongSet synchronize(final LongSet s) {
        return new SynchronizedSet(s);
    }
    
    public static LongSet synchronize(final LongSet s, final Object sync) {
        return new SynchronizedSet(s, sync);
    }
    
    public static LongSet unmodifiable(final LongSet s) {
        return new UnmodifiableSet(s);
    }
    
    public static LongSet fromTo(final long from, final long to) {
        return new AbstractLongSet() {
            @Override
            public boolean contains(final long x) {
                return x >= from && x < to;
            }
            
            @Override
            public LongIterator iterator() {
                return LongIterators.fromTo(from, to);
            }
            
            @Override
            public int size() {
                final long size = to - from;
                return (size >= 0L && size <= 2147483647L) ? ((int)size) : Integer.MAX_VALUE;
            }
        };
    }
    
    public static LongSet from(final long from) {
        return new AbstractLongSet() {
            @Override
            public boolean contains(final long x) {
                return x >= from;
            }
            
            @Override
            public LongIterator iterator() {
                return LongIterators.concat(LongIterators.fromTo(from, Long.MAX_VALUE), LongSets.singleton(Long.MAX_VALUE).iterator());
            }
            
            @Override
            public int size() {
                final long size = Long.MAX_VALUE - from + 1L;
                return (size >= 0L && size <= 2147483647L) ? ((int)size) : Integer.MAX_VALUE;
            }
        };
    }
    
    public static LongSet to(final long to) {
        return new AbstractLongSet() {
            @Override
            public boolean contains(final long x) {
                return x < to;
            }
            
            @Override
            public LongIterator iterator() {
                return LongIterators.fromTo(Long.MIN_VALUE, to);
            }
            
            @Override
            public int size() {
                final long size = to - Long.MIN_VALUE;
                return (size >= 0L && size <= 2147483647L) ? ((int)size) : Integer.MAX_VALUE;
            }
        };
    }
    
    static {
        EMPTY_SET = new EmptySet();
        UNMODIFIABLE_EMPTY_SET = unmodifiable(new LongArraySet(LongArrays.EMPTY_ARRAY));
    }
    
    public static class EmptySet extends LongCollections.EmptyCollection implements LongSet, Serializable, Cloneable
    {
        private static final long serialVersionUID = -7046029254386353129L;
        
        protected EmptySet() {
        }
        
        @Override
        public boolean remove(final long ok) {
            throw new UnsupportedOperationException();
        }
        
        public Object clone() {
            return LongSets.EMPTY_SET;
        }
        
        @Override
        public boolean equals(final Object o) {
            return o instanceof Set && ((Set)o).isEmpty();
        }
        
        @Deprecated
        @Override
        public boolean rem(final long k) {
            return super.rem(k);
        }
        
        private Object readResolve() {
            return LongSets.EMPTY_SET;
        }
    }
    
    public static class Singleton extends AbstractLongSet implements Serializable, Cloneable
    {
        private static final long serialVersionUID = -7046029254386353129L;
        protected final long element;
        
        protected Singleton(final long element) {
            this.element = element;
        }
        
        @Override
        public boolean contains(final long k) {
            return k == this.element;
        }
        
        @Override
        public boolean remove(final long k) {
            throw new UnsupportedOperationException();
        }
        
        @Override
        public LongListIterator iterator() {
            return LongIterators.singleton(this.element);
        }
        
        @Override
        public LongSpliterator spliterator() {
            return LongSpliterators.singleton(this.element);
        }
        
        @Override
        public int size() {
            return 1;
        }
        
        @Override
        public long[] toLongArray() {
            return new long[] { this.element };
        }
        
        @Deprecated
        @Override
        public void forEach(final Consumer<? super Long> action) {
            action.accept(this.element);
        }
        
        @Override
        public boolean addAll(final Collection<? extends Long> c) {
            throw new UnsupportedOperationException();
        }
        
        @Override
        public boolean removeAll(final Collection<?> c) {
            throw new UnsupportedOperationException();
        }
        
        @Override
        public boolean retainAll(final Collection<?> c) {
            throw new UnsupportedOperationException();
        }
        
        @Deprecated
        @Override
        public boolean removeIf(final Predicate<? super Long> filter) {
            throw new UnsupportedOperationException();
        }
        
        @Override
        public void forEach(final LongConsumer action) {
            action.accept(this.element);
        }
        
        @Override
        public boolean addAll(final LongCollection c) {
            throw new UnsupportedOperationException();
        }
        
        @Override
        public boolean removeAll(final LongCollection c) {
            throw new UnsupportedOperationException();
        }
        
        @Override
        public boolean retainAll(final LongCollection c) {
            throw new UnsupportedOperationException();
        }
        
        @Override
        public boolean removeIf(final LongPredicate filter) {
            throw new UnsupportedOperationException();
        }
        
        @Deprecated
        @Override
        public Object[] toArray() {
            return new Object[] { this.element };
        }
        
        public Object clone() {
            return this;
        }
    }
    
    public static class SynchronizedSet extends LongCollections.SynchronizedCollection implements LongSet, Serializable
    {
        private static final long serialVersionUID = -7046029254386353129L;
        
        protected SynchronizedSet(final LongSet s, final Object sync) {
            super(s, sync);
        }
        
        protected SynchronizedSet(final LongSet s) {
            super(s);
        }
        
        @Override
        public boolean remove(final long k) {
            synchronized (this.sync) {
                return this.collection.rem(k);
            }
        }
        
        @Deprecated
        @Override
        public boolean rem(final long k) {
            return super.rem(k);
        }
    }
    
    public static class UnmodifiableSet extends LongCollections.UnmodifiableCollection implements LongSet, Serializable
    {
        private static final long serialVersionUID = -7046029254386353129L;
        
        protected UnmodifiableSet(final LongSet s) {
            super(s);
        }
        
        @Override
        public boolean remove(final long k) {
            throw new UnsupportedOperationException();
        }
        
        @Override
        public boolean equals(final Object o) {
            return o == this || this.collection.equals(o);
        }
        
        @Override
        public int hashCode() {
            return this.collection.hashCode();
        }
        
        @Deprecated
        @Override
        public boolean rem(final long k) {
            return super.rem(k);
        }
    }
}