001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.jet.utils;
018
019import java.util.BitSet;
020
021public class BitSetUtils {
022    private BitSetUtils() {
023    }
024
025    public static int toInt(BitSet bitSet) {
026        int intValue = 0;
027        for (int bit = 0; bit < bitSet.length(); bit++) {
028            if (bitSet.get(bit)) {
029                intValue |= (1 << bit);
030            }
031        }
032        return intValue;
033    }
034
035    public static BitSet toBitSet(int value) {
036        BitSet bitSet = new BitSet();
037        int bit = 0;
038        while (value > 0) {
039            bitSet.set(bit++, value % 2 == 1);
040            value >>= 1;
041        }
042        return bitSet;
043    }
044}