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1   /*
2    * Copyright 2020 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty5.handler.ipfilter;
17  
18  import java.net.InetSocketAddress;
19  import java.util.Comparator;
20  
21  /**
22   * This comparator is only used for searching.
23   */
24  final class IpSubnetFilterRuleComparator implements Comparator<Object> {
25  
26      static final IpSubnetFilterRuleComparator INSTANCE = new IpSubnetFilterRuleComparator();
27  
28      private IpSubnetFilterRuleComparator() {
29          // Prevent outside initialization
30      }
31  
32      @Override
33      public int compare(Object o1, Object o2) {
34          return ((IpSubnetFilterRule) o1).compareTo((InetSocketAddress) o2);
35      }
36  }