80 lines
1.9 KiB
Java
80 lines
1.9 KiB
Java
/*
|
|
* Copyright (C) 2011 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 java.util.Map;
|
|
|
|
import javax.annotation.Nullable;
|
|
|
|
import com.google.common.annotations.GwtCompatible;
|
|
|
|
/**
|
|
* Implementation of {@link ImmutableMultiset} with zero or more elements.
|
|
*
|
|
* @author Jared Levy
|
|
* @author Louis Wasserman
|
|
*/
|
|
@GwtCompatible(serializable = true)
|
|
@SuppressWarnings("serial")
|
|
// uses writeReplace(), not default serialization
|
|
class RegularImmutableMultiset<E> extends ImmutableMultiset<E> {
|
|
private final transient ImmutableMap<E, Integer> map;
|
|
private final transient int size;
|
|
|
|
RegularImmutableMultiset(ImmutableMap<E, Integer> map, int size) {
|
|
this.map = map;
|
|
this.size = size;
|
|
}
|
|
|
|
@Override
|
|
boolean isPartialView() {
|
|
return map.isPartialView();
|
|
}
|
|
|
|
@Override
|
|
public int count(@Nullable Object element) {
|
|
Integer value = map.get(element);
|
|
return (value == null) ? 0 : value;
|
|
}
|
|
|
|
@Override
|
|
public int size() {
|
|
return size;
|
|
}
|
|
|
|
@Override
|
|
public boolean contains(@Nullable Object element) {
|
|
return map.containsKey(element);
|
|
}
|
|
|
|
@Override
|
|
public ImmutableSet<E> elementSet() {
|
|
return map.keySet();
|
|
}
|
|
|
|
@Override
|
|
Entry<E> getEntry(int index) {
|
|
Map.Entry<E, Integer> mapEntry = map.entrySet().asList().get(index);
|
|
return Multisets.immutableEntry(mapEntry.getKey(), mapEntry.getValue());
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
return map.hashCode();
|
|
}
|
|
}
|