From 4eceb95409e844fdc33c9c706e1dc307bfd40303 Mon Sep 17 00:00:00 2001 From: Yohann Roussel Date: Wed, 19 Mar 2014 16:25:37 +0100 Subject: Initial Jack import. Change-Id: I953cf0a520195a7187d791b2885848ad0d5a9b43 --- guava/src/com/google/common/collect/HashBiMap.java | 118 +++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 guava/src/com/google/common/collect/HashBiMap.java (limited to 'guava/src/com/google/common/collect/HashBiMap.java') diff --git a/guava/src/com/google/common/collect/HashBiMap.java b/guava/src/com/google/common/collect/HashBiMap.java new file mode 100644 index 0000000..3b7a3ca --- /dev/null +++ b/guava/src/com/google/common/collect/HashBiMap.java @@ -0,0 +1,118 @@ +/* + * Copyright (C) 2007 The Guava Authors + * + * 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 com.google.common.collect; + +import com.google.common.annotations.GwtCompatible; +import com.google.common.annotations.GwtIncompatible; + +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.util.HashMap; +import java.util.Map; + +import javax.annotation.Nullable; + +/** + * A {@link BiMap} backed by two {@link HashMap} instances. This implementation + * allows null keys and values. A {@code HashBiMap} and its inverse are both + * serializable. + * + *

See the Guava User Guide article on + * {@code BiMap}. + * + * @author Mike Bostock + * @since 2.0 (imported from Google Collections Library) + */ +@GwtCompatible(emulated = true) +public final class HashBiMap extends AbstractBiMap { + + /** + * Returns a new, empty {@code HashBiMap} with the default initial capacity + * (16). + */ + public static HashBiMap create() { + return new HashBiMap(); + } + + /** + * Constructs a new, empty bimap with the specified expected size. + * + * @param expectedSize the expected number of entries + * @throws IllegalArgumentException if the specified expected size is + * negative + */ + public static HashBiMap create(int expectedSize) { + return new HashBiMap(expectedSize); + } + + /** + * Constructs a new bimap containing initial values from {@code map}. The + * bimap is created with an initial capacity sufficient to hold the mappings + * in the specified map. + */ + public static HashBiMap create( + Map map) { + HashBiMap bimap = create(map.size()); + bimap.putAll(map); + return bimap; + } + + private HashBiMap() { + super(new HashMap(), new HashMap()); + } + + private HashBiMap(int expectedSize) { + super( + Maps.newHashMapWithExpectedSize(expectedSize), + Maps.newHashMapWithExpectedSize(expectedSize)); + } + + // Override these two methods to show that keys and values may be null + + @Override public V put(@Nullable K key, @Nullable V value) { + return super.put(key, value); + } + + @Override public V forcePut(@Nullable K key, @Nullable V value) { + return super.forcePut(key, value); + } + + /** + * @serialData the number of entries, first key, first value, second key, + * second value, and so on. + */ + @GwtIncompatible("java.io.ObjectOutputStream") + private void writeObject(ObjectOutputStream stream) throws IOException { + stream.defaultWriteObject(); + Serialization.writeMap(this, stream); + } + + @GwtIncompatible("java.io.ObjectInputStream") + private void readObject(ObjectInputStream stream) + throws IOException, ClassNotFoundException { + stream.defaultReadObject(); + int size = Serialization.readCount(stream); + setDelegates(Maps.newHashMapWithExpectedSize(size), + Maps.newHashMapWithExpectedSize(size)); + Serialization.populateMap(this, stream, size); + } + + @GwtIncompatible("Not needed in emulated source") + private static final long serialVersionUID = 0; +} -- cgit v1.1