it.unimi.dsi.fastutil.bytes.Byte2ReferenceSortedMaps Maven / Gradle / Ivy
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/* Generic definitions */
/* Assertions (useful to generate conditional code) */
/* Current type and class (and size, if applicable) */
/* Value methods */
/* Interfaces (keys) */
/* Interfaces (values) */
/* Abstract implementations (keys) */
/* Abstract implementations (values) */
/* Static containers (keys) */
/* Static containers (values) */
/* Implementations */
/* Synchronized wrappers */
/* Unmodifiable wrappers */
/* Other wrappers */
/* Methods (keys) */
/* Methods (values) */
/* Methods (keys/values) */
/* Methods that have special names depending on keys (but the special names depend on values) */
/* Equality */
/* Object/Reference-only definitions (keys) */
/* Primitive-type-only definitions (keys) */
/* Object/Reference-only definitions (values) */
/*
* Copyright (C) 2002-2016 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.bytes;
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 Byte2ReferenceSortedMaps {
private Byte2ReferenceSortedMaps() {
}
/**
* 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 ByteComparator 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
Byte2ReferenceMaps.EmptyMap
implements
Byte2ReferenceSortedMap,
java.io.Serializable,
Cloneable {
private static final long serialVersionUID = -7046029254386353129L;
protected EmptySortedMap() {
}
public ByteComparator comparator() {
return null;
}
@SuppressWarnings("unchecked")
public ObjectSortedSet> byte2ReferenceEntrySet() {
return ObjectSortedSets.EMPTY_SET;
}
@SuppressWarnings("unchecked")
public ObjectSortedSet> entrySet() {
return ObjectSortedSets.EMPTY_SET;
}
public ByteSortedSet keySet() {
return ByteSortedSets.EMPTY_SET;
}
@SuppressWarnings("unchecked")
public Byte2ReferenceSortedMap subMap(final byte from, final byte to) {
return EMPTY_MAP;
}
@SuppressWarnings("unchecked")
public Byte2ReferenceSortedMap headMap(final byte to) {
return EMPTY_MAP;
}
@SuppressWarnings("unchecked")
public Byte2ReferenceSortedMap tailMap(final byte from) {
return EMPTY_MAP;
}
public byte firstByteKey() {
throw new NoSuchElementException();
}
public byte lastByteKey() {
throw new NoSuchElementException();
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte2ReferenceSortedMap headMap(Byte oto) {
return headMap(((oto).byteValue()));
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte2ReferenceSortedMap tailMap(Byte ofrom) {
return tailMap(((ofrom).byteValue()));
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte2ReferenceSortedMap subMap(Byte ofrom, Byte oto) {
return subMap(((ofrom).byteValue()), ((oto).byteValue()));
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte firstKey() {
return (Byte.valueOf(firstByteKey()));
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte lastKey() {
return (Byte.valueOf(lastByteKey()));
}
}
/**
* An empty sorted map (immutable). It is serializable and cloneable.
*/
@SuppressWarnings("rawtypes")
public static final EmptySortedMap EMPTY_MAP = new EmptySortedMap();
/**
* Return an empty sorted map (immutable). It is serializable and cloneable.
*
*
* This method provides a typesafe access to {@link #EMPTY_MAP}.
*
* @return an empty sorted map (immutable).
*/
@SuppressWarnings("unchecked")
public static Byte2ReferenceSortedMap emptyMap() {
return EMPTY_MAP;
}
/**
* 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 Byte2ReferenceMaps.Singleton
implements
Byte2ReferenceSortedMap,
java.io.Serializable,
Cloneable {
private static final long serialVersionUID = -7046029254386353129L;
protected final ByteComparator comparator;
protected Singleton(final byte key, final V value,
ByteComparator comparator) {
super(key, value);
this.comparator = comparator;
}
protected Singleton(final byte key, final V value) {
this(key, value, null);
}
final int compare(final byte k1, final byte k2) {
return comparator == null ? (Byte.compare((k1), (k2))) : comparator
.compare(k1, k2);
}
public ByteComparator comparator() {
return comparator;
}
public ObjectSortedSet> byte2ReferenceEntrySet() {
if (entries == null)
entries = ObjectSortedSets
.singleton(
(Byte2ReferenceMap.Entry) new SingletonEntry(),
(Comparator>) entryComparator(comparator));
return (ObjectSortedSet>) entries;
}
@SuppressWarnings({"rawtypes", "unchecked"})
public ObjectSortedSet> entrySet() {
return (ObjectSortedSet) byte2ReferenceEntrySet();
}
public ByteSortedSet keySet() {
if (keys == null)
keys = ByteSortedSets.singleton(key, comparator);
return (ByteSortedSet) keys;
}
@SuppressWarnings("unchecked")
public Byte2ReferenceSortedMap subMap(final byte from, final byte to) {
if (compare(from, key) <= 0 && compare(key, to) < 0)
return this;
return EMPTY_MAP;
}
@SuppressWarnings("unchecked")
public Byte2ReferenceSortedMap headMap(final byte to) {
if (compare(key, to) < 0)
return this;
return EMPTY_MAP;
}
@SuppressWarnings("unchecked")
public Byte2ReferenceSortedMap tailMap(final byte from) {
if (compare(from, key) <= 0)
return this;
return EMPTY_MAP;
}
public byte firstByteKey() {
return key;
}
public byte lastByteKey() {
return key;
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte2ReferenceSortedMap headMap(Byte oto) {
return headMap(((oto).byteValue()));
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte2ReferenceSortedMap tailMap(Byte ofrom) {
return tailMap(((ofrom).byteValue()));
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte2ReferenceSortedMap subMap(Byte ofrom, Byte oto) {
return subMap(((ofrom).byteValue()), ((oto).byteValue()));
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte firstKey() {
return (Byte.valueOf(firstByteKey()));
}
/**
* {@inheritDoc}
*
* @deprecated Please use the corresponding type-specific method
* instead.
*/
@Deprecated
public Byte lastKey() {
return (Byte.valueOf(lastByteKey()));
}
}
/**
* 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 Byte2ReferenceSortedMap singleton(final Byte key,
V value) {
return new Singleton(((key).byteValue()), (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 Byte2ReferenceSortedMap singleton(final Byte key,
V value, ByteComparator comparator) {
return new Singleton(((key).byteValue()), (value), 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 Byte2ReferenceSortedMap singleton(final byte key,
final V 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 Byte2ReferenceSortedMap singleton(final byte key,
final V value, ByteComparator comparator) {
return new Singleton(key, value, comparator);
}
/** A synchronized wrapper class for sorted maps. */
public static class SynchronizedSortedMap
extends
Byte2ReferenceMaps.SynchronizedMap
implements
Byte2ReferenceSortedMap,
java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final Byte2ReferenceSortedMap sortedMap;
protected SynchronizedSortedMap(final Byte2ReferenceSortedMap m,
final Object sync) {
super(m, sync);
sortedMap = m;
}
protected SynchronizedSortedMap(final Byte2ReferenceSortedMap m) {
super(m);
sortedMap = m;
}
public ByteComparator comparator() {
synchronized (sync) {
return sortedMap.comparator();
}
}
public ObjectSortedSet> byte2ReferenceEntrySet() {
if (entries == null)
entries = ObjectSortedSets.synchronize(
sortedMap.byte2ReferenceEntrySet(), sync);
return (ObjectSortedSet>) entries;
}
@SuppressWarnings({"rawtypes", "unchecked"})
public ObjectSortedSet> entrySet() {
return (ObjectSortedSet) byte2ReferenceEntrySet();
}
public ByteSortedSet keySet() {
if (keys == null)
keys = ByteSortedSets.synchronize(sortedMap.keySet(), sync);
return (ByteSortedSet) keys;
}
public Byte2ReferenceSortedMap subMap(final byte from, final byte to) {
return new SynchronizedSortedMap(sortedMap.subMap(from, to),
sync);
}
public Byte2ReferenceSortedMap headMap(final byte to) {
return new SynchronizedSortedMap(sortedMap.headMap(to), sync);
}
public Byte2ReferenceSortedMap tailMap(final byte from) {
return new SynchronizedSortedMap(sortedMap.tailMap(from), sync);
}
public byte firstByteKey() {
synchronized (sync) {
return sortedMap.firstByteKey();
}
}
public byte lastByteKey() {
synchronized (sync) {
return sortedMap.lastByteKey();
}
}
public Byte firstKey() {
synchronized (sync) {
return sortedMap.firstKey();
}
}
public Byte lastKey() {
synchronized (sync) {
return sortedMap.lastKey();
}
}
public Byte2ReferenceSortedMap subMap(final Byte from, final Byte to) {
return new SynchronizedSortedMap(sortedMap.subMap(from, to),
sync);
}
public Byte2ReferenceSortedMap headMap(final Byte to) {
return new SynchronizedSortedMap(sortedMap.headMap(to), sync);
}
public Byte2ReferenceSortedMap tailMap(final Byte 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 Byte2ReferenceSortedMap synchronize(
final Byte2ReferenceSortedMap 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 Byte2ReferenceSortedMap synchronize(
final Byte2ReferenceSortedMap m, final Object sync) {
return new SynchronizedSortedMap(m, sync);
}
/** An unmodifiable wrapper class for sorted maps. */
public static class UnmodifiableSortedMap
extends
Byte2ReferenceMaps.UnmodifiableMap
implements
Byte2ReferenceSortedMap,
java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final Byte2ReferenceSortedMap sortedMap;
protected UnmodifiableSortedMap(final Byte2ReferenceSortedMap m) {
super(m);
sortedMap = m;
}
public ByteComparator comparator() {
return sortedMap.comparator();
}
public ObjectSortedSet> byte2ReferenceEntrySet() {
if (entries == null)
entries = ObjectSortedSets.unmodifiable(sortedMap
.byte2ReferenceEntrySet());
return (ObjectSortedSet>) entries;
}
@SuppressWarnings({"rawtypes", "unchecked"})
public ObjectSortedSet> entrySet() {
return (ObjectSortedSet) byte2ReferenceEntrySet();
}
public ByteSortedSet keySet() {
if (keys == null)
keys = ByteSortedSets.unmodifiable(sortedMap.keySet());
return (ByteSortedSet) keys;
}
public Byte2ReferenceSortedMap subMap(final byte from, final byte to) {
return new UnmodifiableSortedMap(sortedMap.subMap(from, to));
}
public Byte2ReferenceSortedMap headMap(final byte to) {
return new UnmodifiableSortedMap(sortedMap.headMap(to));
}
public Byte2ReferenceSortedMap tailMap(final byte from) {
return new UnmodifiableSortedMap(sortedMap.tailMap(from));
}
public byte firstByteKey() {
return sortedMap.firstByteKey();
}
public byte lastByteKey() {
return sortedMap.lastByteKey();
}
public Byte firstKey() {
return sortedMap.firstKey();
}
public Byte lastKey() {
return sortedMap.lastKey();
}
public Byte2ReferenceSortedMap subMap(final Byte from, final Byte to) {
return new UnmodifiableSortedMap(sortedMap.subMap(from, to));
}
public Byte2ReferenceSortedMap headMap(final Byte to) {
return new UnmodifiableSortedMap(sortedMap.headMap(to));
}
public Byte2ReferenceSortedMap tailMap(final Byte 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 Byte2ReferenceSortedMap unmodifiable(
final Byte2ReferenceSortedMap m) {
return new UnmodifiableSortedMap(m);
}
}