1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://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,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.android.compatibility.common.tradefed.util;
17 
18 import com.android.compatibility.common.tradefed.testtype.IModuleDef;
19 
20 import java.util.HashSet;
21 import java.util.List;
22 
23 /**
24  * Utility to count the number of unique module from list of {@link IModuleDef}.
25  */
26 public class UniqueModuleCountUtil {
27 
28     /**
29      * Count the number of unique modules within the list using module id. If two IModuleDef have
30      * the same id, they are part of the same module.
31      *
32      * @param listModules list of {@link IModuleDef} to count from
33      * @return the count of unique module.
34      */
countUniqueModules(List<IModuleDef> listModules)35     public static int countUniqueModules(List<IModuleDef> listModules) {
36         HashSet<String> uniqueNames = new HashSet<>();
37         for (IModuleDef subModule : listModules) {
38             uniqueNames.add(subModule.getId());
39         }
40         return uniqueNames.size();
41     }
42 }
43