it.unimi.dsi.fastutil.longs.Long2IntSortedMaps Maven / Gradle / Ivy
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/*
* Copyright (C) 2002-2017 Sebastiano Vigna
*
* 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 it.unimi.dsi.fastutil.longs;
import it.unimi.dsi.fastutil.objects.ObjectSortedSet;
import it.unimi.dsi.fastutil.objects.ObjectSortedSets;
import java.util.Comparator;
import java.util.Map;
import java.util.SortedMap;
import java.util.NoSuchElementException;
/** A class providing static methods and objects that do useful things with type-specific sorted maps.
*
* @see java.util.Collections
*/
public class Long2IntSortedMaps {
private Long2IntSortedMaps() {}
/** Returns a comparator for entries based on a given comparator on keys.
*
* @param comparator a comparator on keys.
* @return the associated comparator on entries.
*/
public static Comparator> entryComparator(final LongComparator comparator) {
return new Comparator>() {
public int compare(Map.Entry x, Map.Entry y) {
return comparator.compare(x.getKey(), y.getKey());
}
};
}
/** An immutable class representing an empty type-specific sorted map.
*
* This class may be useful to implement your own in case you subclass
* a type-specific sorted map.
*/
public static class EmptySortedMap extends Long2IntMaps.EmptyMap implements Long2IntSortedMap , java.io.Serializable, Cloneable {
private static final long serialVersionUID = -7046029254386353129L;
protected EmptySortedMap() {}
@Override
public LongComparator comparator() { return null; }
@SuppressWarnings("unchecked")
@Override
public ObjectSortedSet long2IntEntrySet() { return ObjectSortedSets.EMPTY_SET; }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
@SuppressWarnings("unchecked")
public ObjectSortedSet> entrySet() { return ObjectSortedSets.EMPTY_SET; }
@Override
public LongSortedSet keySet() { return LongSortedSets.EMPTY_SET; }
@Override
public Long2IntSortedMap subMap(final long from, final long to) { return EMPTY_MAP; }
@Override
public Long2IntSortedMap headMap(final long to) { return EMPTY_MAP; }
@Override
public Long2IntSortedMap tailMap(final long from) { return EMPTY_MAP; }
@Override
public long firstLongKey() { throw new NoSuchElementException(); }
@Override
public long lastLongKey() { throw new NoSuchElementException(); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap headMap(Long oto) { return headMap(((oto).longValue())); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap tailMap(Long ofrom) { return tailMap(((ofrom).longValue())); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap subMap(Long ofrom, Long oto) { return subMap(((ofrom).longValue()), ((oto).longValue())); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long firstKey() { return (Long.valueOf(firstLongKey())); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long lastKey() { return (Long.valueOf(lastLongKey())); }
}
/** An empty sorted map (immutable). It is serializable and cloneable.
*/
public static final EmptySortedMap EMPTY_MAP = new EmptySortedMap();
/** An immutable class representing a type-specific singleton sorted map.
*
* This class may be useful to implement your own in case you subclass
* a type-specific sorted map.
*/
public static class Singleton extends Long2IntMaps.Singleton implements Long2IntSortedMap , java.io.Serializable, Cloneable {
private static final long serialVersionUID = -7046029254386353129L;
protected final LongComparator comparator;
protected Singleton(final long key, final int value, LongComparator comparator) {
super(key, value);
this.comparator = comparator;
}
protected Singleton(final long key, final int value) {
this(key, value, null);
}
final int compare(final long k1, final long k2) {
return comparator == null ? ( Long.compare((k1),(k2)) ) : comparator.compare(k1, k2);
}
@Override
public LongComparator comparator() { return comparator; }
@Override
public ObjectSortedSet long2IntEntrySet() { if (entries == null) entries = ObjectSortedSets.singleton((Long2IntMap.Entry )new AbstractLong2IntMap.BasicEntry (key, value), (Comparator)entryComparator(comparator)); return (ObjectSortedSet)entries; }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
public ObjectSortedSet> entrySet() { return (ObjectSortedSet)long2IntEntrySet(); }
@Override
public LongSortedSet keySet() { if (keys == null) keys = LongSortedSets.singleton(key, comparator); return (LongSortedSet )keys; }
@Override
public Long2IntSortedMap subMap(final long from, final long to) { if (compare(from, key) <= 0 && compare(key, to) < 0) return this; return EMPTY_MAP; }
@Override
public Long2IntSortedMap headMap(final long to) { if (compare(key, to) < 0) return this; return EMPTY_MAP; }
@Override
public Long2IntSortedMap tailMap(final long from) { if (compare(from, key) <= 0) return this; return EMPTY_MAP; }
@Override
public long firstLongKey() { return key; }
@Override
public long lastLongKey() { return key; }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap headMap(Long oto) { return headMap(((oto).longValue())); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap tailMap(Long ofrom) { return tailMap(((ofrom).longValue())); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap subMap(Long ofrom, Long oto) { return subMap(((ofrom).longValue()), ((oto).longValue())); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long firstKey() { return (Long.valueOf(firstLongKey())); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long lastKey() { return (Long.valueOf(lastLongKey())); }
}
/** Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted map is serializable and cloneable.
*
* Note that albeit the returned map is immutable, its default return value may be changed.
*
* @param key the only key of the returned sorted map.
* @param value the only value of the returned sorted map.
* @return a type-specific immutable sorted map containing just the pair <key,value>.
*/
public static Long2IntSortedMap singleton(final Long key, Integer value) {
return new Singleton (((key).longValue()), ((value).intValue()));
}
/** RETURNS a type-specific immutable sorted map containing only the specified pair. The returned sorted map is serializable and cloneable.
*
*
Note that albeit the returned map is immutable, its default return value may be changed.
*
* @param key the only key of the returned sorted map.
* @param value the only value of the returned sorted map.
* @param comparator the comparator to use in the returned sorted map.
* @return a type-specific immutable sorted map containing just the pair <key,value>.
*/
public static Long2IntSortedMap singleton(final Long key, Integer value, LongComparator comparator) {
return new Singleton (((key).longValue()), ((value).intValue()), comparator);
}
/** Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted map is serializable and cloneable.
*
*
Note that albeit the returned map is immutable, its default return value may be changed.
*
* @param key the only key of the returned sorted map.
* @param value the only value of the returned sorted map.
* @return a type-specific immutable sorted map containing just the pair <key,value>.
*/
public static Long2IntSortedMap singleton(final long key, final int value) {
return new Singleton (key, value);
}
/** Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted map is serializable and cloneable.
*
*
Note that albeit the returned map is immutable, its default return value may be changed.
*
* @param key the only key of the returned sorted map.
* @param value the only value of the returned sorted map.
* @param comparator the comparator to use in the returned sorted map.
* @return a type-specific immutable sorted map containing just the pair <key,value>.
*/
public static Long2IntSortedMap singleton(final long key, final int value, LongComparator comparator) {
return new Singleton (key, value, comparator);
}
/** A synchronized wrapper class for sorted maps. */
public static class SynchronizedSortedMap extends Long2IntMaps.SynchronizedMap implements Long2IntSortedMap , java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final Long2IntSortedMap sortedMap;
protected SynchronizedSortedMap(final Long2IntSortedMap m, final Object sync) {
super(m, sync);
sortedMap = m;
}
protected SynchronizedSortedMap(final Long2IntSortedMap m) {
super(m);
sortedMap = m;
}
@Override
public LongComparator comparator() { synchronized(sync) { return sortedMap.comparator(); } }
@Override
public ObjectSortedSet long2IntEntrySet() { if (entries == null) entries = ObjectSortedSets.synchronize(sortedMap.long2IntEntrySet(), sync); return (ObjectSortedSet)entries; }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
public ObjectSortedSet> entrySet() { return (ObjectSortedSet)long2IntEntrySet(); }
@Override
public LongSortedSet keySet() { if (keys == null) keys = LongSortedSets.synchronize(sortedMap.keySet(), sync); return (LongSortedSet )keys; }
@Override
public Long2IntSortedMap subMap(final long from, final long to) { return new SynchronizedSortedMap (sortedMap.subMap(from, to), sync); }
@Override
public Long2IntSortedMap headMap(final long to) { return new SynchronizedSortedMap (sortedMap.headMap(to), sync); }
@Override
public Long2IntSortedMap tailMap(final long from) { return new SynchronizedSortedMap (sortedMap.tailMap(from), sync); }
@Override
public long firstLongKey() { synchronized(sync) { return sortedMap.firstLongKey(); } }
@Override
public long lastLongKey() { synchronized(sync) { return sortedMap.lastLongKey(); } }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long firstKey() { synchronized(sync) { return sortedMap.firstKey(); } }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long lastKey() { synchronized(sync) { return sortedMap.lastKey(); } }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap subMap(final Long from, final Long to) { return new SynchronizedSortedMap (sortedMap.subMap(from, to), sync); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap headMap(final Long to) { return new SynchronizedSortedMap (sortedMap.headMap(to), sync); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap tailMap(final Long from) { return new SynchronizedSortedMap (sortedMap.tailMap(from), sync); }
}
/** Returns a synchronized type-specific sorted map backed by the given type-specific sorted map.
*
* @param m the sorted map to be wrapped in a synchronized sorted map.
* @return a synchronized view of the specified sorted map.
* @see java.util.Collections#synchronizedSortedMap(SortedMap)
*/
public static Long2IntSortedMap synchronize(final Long2IntSortedMap m) { return new SynchronizedSortedMap (m); }
/** Returns a synchronized type-specific sorted map backed by the given type-specific sorted map, using an assigned object to synchronize.
*
* @param m the sorted map to be wrapped in a synchronized sorted map.
* @param sync an object that will be used to synchronize the access to the sorted sorted map.
* @return a synchronized view of the specified sorted map.
* @see java.util.Collections#synchronizedSortedMap(SortedMap)
*/
public static Long2IntSortedMap synchronize(final Long2IntSortedMap m, final Object sync) { return new SynchronizedSortedMap (m, sync); }
/** An unmodifiable wrapper class for sorted maps. */
public static class UnmodifiableSortedMap extends Long2IntMaps.UnmodifiableMap implements Long2IntSortedMap , java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final Long2IntSortedMap sortedMap;
protected UnmodifiableSortedMap(final Long2IntSortedMap m) {
super(m);
sortedMap = m;
}
@Override
public LongComparator comparator() { return sortedMap.comparator(); }
@Override
public ObjectSortedSet long2IntEntrySet() { if (entries == null) entries = ObjectSortedSets.unmodifiable(sortedMap.long2IntEntrySet()); return (ObjectSortedSet)entries; }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
public ObjectSortedSet> entrySet() { return (ObjectSortedSet)long2IntEntrySet(); }
@Override
public LongSortedSet keySet() { if (keys == null) keys = LongSortedSets.unmodifiable(sortedMap.keySet()); return (LongSortedSet )keys; }
@Override
public Long2IntSortedMap subMap(final long from, final long to) { return new UnmodifiableSortedMap (sortedMap.subMap(from, to)); }
@Override
public Long2IntSortedMap headMap(final long to) { return new UnmodifiableSortedMap (sortedMap.headMap(to)); }
@Override
public Long2IntSortedMap tailMap(final long from) { return new UnmodifiableSortedMap (sortedMap.tailMap(from)); }
@Override
public long firstLongKey() { return sortedMap.firstLongKey(); }
@Override
public long lastLongKey() { return sortedMap.lastLongKey(); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long firstKey() { return sortedMap.firstKey(); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long lastKey() { return sortedMap.lastKey(); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap subMap(final Long from, final Long to) { return new UnmodifiableSortedMap (sortedMap.subMap(from, to)); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap headMap(final Long to) { return new UnmodifiableSortedMap (sortedMap.headMap(to)); }
/** {@inheritDoc}
* @deprecated Please use the corresponding type-specific method instead. */
@Deprecated
@Override
public Long2IntSortedMap tailMap(final Long from) { return new UnmodifiableSortedMap (sortedMap.tailMap(from)); }
}
/** Returns an unmodifiable type-specific sorted map backed by the given type-specific sorted map.
*
* @param m the sorted map to be wrapped in an unmodifiable sorted map.
* @return an unmodifiable view of the specified sorted map.
* @see java.util.Collections#unmodifiableSortedMap(SortedMap)
*/
public static Long2IntSortedMap unmodifiable(final Long2IntSortedMap m) { return new UnmodifiableSortedMap (m); }
}