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 
17 package com.android.server.wifi.util;
18 
19 /**
20  * Helper for translating bit-flags packed into an int
21  */
22 public class BitMask {
23     public int value;
24 
BitMask(int value)25     public BitMask(int value) {
26         this.value = value;
27     }
28 
29     /**
30      * Clears the specifed bit, returning true if it was set
31      *
32      * @param maskBit to test and clear
33      * @return true if and only if the mask was originally set in value
34      */
testAndClear(int maskBit)35     public boolean testAndClear(int maskBit) {
36         boolean ans = (value & maskBit) != 0;
37         value &= ~maskBit;
38         return ans;
39     }
40 }
41