1   /*
2    * Copyright (C) 2009 The Guava Authors
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5    * in compliance with the License. You may obtain a copy of the License at
6    *
7    * http://www.apache.org/licenses/LICENSE-2.0
8    *
9    * Unless required by applicable law or agreed to in writing, software distributed under the
10   * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
11   * express or implied. See the License for the specific language governing permissions and
12   * limitations under the License.
13   */
14  
15  package com.google.common.collect;
16  
17  import com.google.common.annotations.GwtCompatible;
18  
19  import java.util.Comparator;
20  
21  /**
22   * List returned by {@code ImmutableSortedSet.asList()} when the set isn't empty.
23   *
24   * @author Jared Levy
25   * @author Louis Wasserman
26   */
27  @GwtCompatible(emulated = true)
28  @SuppressWarnings("serial")
29  final class ImmutableSortedAsList<E> extends RegularImmutableAsList<E>
30      implements SortedIterable<E> {
31    ImmutableSortedAsList(
32        ImmutableSortedSet<E> backingSet, ImmutableList<E> backingList) {
33      super(backingSet, backingList);
34    }
35  
36    @Override
37    ImmutableSortedSet<E> delegateCollection() {
38      return (ImmutableSortedSet<E>) super.delegateCollection();
39    }
40  
41    @Override public Comparator<? super E> comparator() {
42      return delegateCollection().comparator();
43    }
44  
45    // Override indexOf() and lastIndexOf() to be O(log N) instead of O(N).
46  
47    @Override
48    public boolean contains(Object target) {
49      // Necessary for ISS's with comparators inconsistent with equals.
50      return indexOf(target) >= 0;
51    }
52  }
53