| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.qpid.transport; |
| |
| import java.util.Iterator; |
| import java.util.ListIterator; |
| import java.util.LinkedList; |
| |
| import static org.apache.qpid.util.Serial.*; |
| |
| /** |
| * RangeSet |
| * |
| * @author Rafael H. Schloming |
| */ |
| |
| public final class RangeSet implements Iterable<Range> |
| { |
| |
| private LinkedList<Range> ranges = new LinkedList<Range>(); |
| |
| public int size() |
| { |
| return ranges.size(); |
| } |
| |
| public Iterator<Range> iterator() |
| { |
| return ranges.iterator(); |
| } |
| |
| public Range getFirst() |
| { |
| return ranges.getFirst(); |
| } |
| |
| public boolean includes(Range range) |
| { |
| for (Range r : this) |
| { |
| if (r.includes(range)) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| public boolean includes(int n) |
| { |
| for (Range r : this) |
| { |
| if (r.includes(n)) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| public void add(Range range) |
| { |
| ListIterator<Range> it = ranges.listIterator(); |
| |
| while (it.hasNext()) |
| { |
| Range next = it.next(); |
| if (range.touches(next)) |
| { |
| it.remove(); |
| range = range.span(next); |
| } |
| else if (lt(range.getUpper(), next.getLower())) |
| { |
| it.previous(); |
| it.add(range); |
| return; |
| } |
| } |
| |
| it.add(range); |
| } |
| |
| public void add(int lower, int upper) |
| { |
| add(new Range(lower, upper)); |
| } |
| |
| public void add(int value) |
| { |
| add(value, value); |
| } |
| |
| public void clear() |
| { |
| ranges.clear(); |
| } |
| |
| public RangeSet copy() |
| { |
| RangeSet copy = new RangeSet(); |
| copy.ranges.addAll(ranges); |
| return copy; |
| } |
| |
| public String toString() |
| { |
| StringBuffer str = new StringBuffer(); |
| str.append("{"); |
| boolean first = true; |
| for (Range range : ranges) |
| { |
| if (first) |
| { |
| first = false; |
| } |
| else |
| { |
| str.append(", "); |
| } |
| str.append(range); |
| } |
| str.append("}"); |
| return str.toString(); |
| } |
| |
| } |