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Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. Guava has two code dependencies - javax.annotation per the JSR-305 spec and javax.inject per the JSR-330 spec. This is a fork of Guava 14.0.1 for Hudson.

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/*
 * 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 javax.annotation.Nullable;

/**
 * A descending wrapper around an {@code ImmutableSortedMultiset}
 *
 * @author Louis Wasserman
 */
@SuppressWarnings("serial") // uses writeReplace, not default serialization
final class DescendingImmutableSortedMultiset extends ImmutableSortedMultiset {
  private final transient ImmutableSortedMultiset forward;

  DescendingImmutableSortedMultiset(ImmutableSortedMultiset forward) {
    this.forward = forward;
  }

  @Override
  public int count(@Nullable Object element) {
    return forward.count(element);
  }

  @Override
  public Entry firstEntry() {
    return forward.lastEntry();
  }

  @Override
  public Entry lastEntry() {
    return forward.firstEntry();
  }

  @Override
  public int size() {
    return forward.size();
  }

  @Override
  public ImmutableSortedSet elementSet() {
    return forward.elementSet().descendingSet();
  }

  @Override
  ImmutableSet> createEntrySet() {
    final ImmutableSet> forwardEntrySet = forward.entrySet();
    return new EntrySet() {
      @Override
      public int size() {
        return forwardEntrySet.size();
      }

      @Override
      public UnmodifiableIterator> iterator() {
        return asList().iterator();
      }

      @Override
      ImmutableList> createAsList() {
        return forwardEntrySet.asList().reverse();
      }
    };
  }

  @Override
  public ImmutableSortedMultiset descendingMultiset() {
    return forward;
  }

  @Override
  public ImmutableSortedMultiset headMultiset(E upperBound, BoundType boundType) {
    return forward.tailMultiset(upperBound, boundType).descendingMultiset();
  }

  @Override
  public ImmutableSortedMultiset tailMultiset(E lowerBound, BoundType boundType) {
    return forward.headMultiset(lowerBound, boundType).descendingMultiset();
  }

  @Override
  boolean isPartialView() {
    return forward.isPartialView();
  }
}