/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.vcs.log.graph.utils.impl;
import com.intellij.vcs.log.graph.utils.Flags;
import org.jetbrains.annotations.NotNull;
import java.util.BitSet;
public class BitSetFlags implements Flags {
private final int mySize;
@NotNull private final BitSet myBitSet;
// default value is false
public BitSetFlags(int size) {
if (size < 0) throw new NegativeArraySizeException("size < 0: " + size);
mySize = size;
myBitSet = new BitSet();
}
public BitSetFlags(int size, boolean defaultValue) {
this(size);
if (defaultValue) setAll(true);
}
@Override
public int size() {
return mySize;
}
@Override
public boolean get(int index) {
checkRange(index);
return myBitSet.get(index);
}
@Override
public void set(int index, boolean value) {
checkRange(index);
myBitSet.set(index, value);
}
@Override
public void setAll(boolean value) {
myBitSet.set(0, mySize, value);
}
private void checkRange(int index) {
if (index < 0) throw new IndexOutOfBoundsException("index is " + index + " which is less then zero");
if (index >= mySize) throw new IndexOutOfBoundsException("index is " + index + " and set size is " + mySize);
}
}