jalviewX
File RangeElementsIterator.java
Coverage histogram
0% of files have more coverage
Classes
| Class | Line # | Actions | ||||
|---|---|---|---|---|---|---|
| RangeElementsIterator | 34 | 19 | 10 | 1 |
Contributing tests
This file is covered by 10 tests.
.
Source view
| 1 | /* | |
| 2 | * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$) | |
| 3 | * Copyright (C) $$Year-Rel$$ The Jalview Authors | |
| 4 | * | |
| 5 | * This file is part of Jalview. | |
| 6 | * | |
| 7 | * Jalview is free software: you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License | |
| 9 | * as published by the Free Software Foundation, either version 3 | |
| 10 | * of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * Jalview is distributed in the hope that it will be useful, but | |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty | |
| 14 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
| 15 | * PURPOSE. See the GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with Jalview. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | * The Jalview Authors are detailed in the 'AUTHORS' file. | |
| 20 | */ | |
| 21 | package jalview.datamodel; | |
| 22 | ||
| 23 | import java.util.Iterator; | |
| 24 | import java.util.NoSuchElementException; | |
| 25 | ||
| 26 | /** | |
| 27 | * Iterator over each element in a set of ranges i.e. if ranges is {[3,6], | |
| 28 | * [12,15]} it will iterate over {3,4,5,6,12,13,14,15}. Uses a local copy of the | |
| 29 | * set of ranges. | |
| 30 | * | |
| 31 | * @author kmourao | |
| 32 | * | |
| 33 | */ | |
| 34 | public class RangeElementsIterator implements Iterator<Integer> | |
| 35 | { | |
| 36 | private int last; | |
| 37 | ||
| 38 | private int current; | |
| 39 | ||
| 40 | private int next; | |
| 41 | ||
| 42 | private Iterator<int[]> rangeIterator; | |
| 43 | ||
| 44 | private int[] nextRange = null; | |
| 45 | ||
| 46 | 10 |  RangeElementsIterator(Iterator<int[]> it) |
| 47 | { | |
| 48 | 10 | rangeIterator = it; |
| 49 | 10 | if (rangeIterator.hasNext()) |
| 50 | { | |
| 51 | 10 | nextRange = rangeIterator.next(); |
| 52 | 10 | next = nextRange[0]; |
| 53 | 10 | last = nextRange[1]; |
| 54 | } | |
| 55 | } | |
| 56 | ||
| 57 | 64 | @Override |
| 58 | public boolean hasNext() | |
| 59 | { | |
| 60 | 64 | return rangeIterator.hasNext() || next <= last; |
| 61 | } | |
| 62 | ||
| 63 | 30 | @Override |
| 64 | public Integer next() | |
| 65 | { | |
| 66 | 30 | if (!hasNext()) |
| 67 | { | |
| 68 | 4 | throw new NoSuchElementException(); |
| 69 | } | |
| 70 | ||
| 71 | 26 | current = next; |
| 72 | ||
| 73 | // recalculate next | |
| 74 | 26 | next++; |
| 75 | ||
| 76 | // if there are more ranges need to check if next is in a range | |
| 77 | 26 | checkNextRange(); |
| 78 | 26 | return current; |
| 79 | } | |
| 80 | ||
| 81 | /** | |
| 82 | * Check how next position relates to next range, and update next position if | |
| 83 | * necessary | |
| 84 | */ | |
| 85 | 26 | private void checkNextRange() |
| 86 | { | |
| 87 | 26 | if (nextRange != null && next > nextRange[1]) |
| 88 | { | |
| 89 | 9 | if (rangeIterator.hasNext()) |
| 90 | { | |
| 91 | 1 | nextRange = rangeIterator.next(); |
| 92 | 1 | next = nextRange[0]; |
| 93 | 1 | last = nextRange[1]; |
| 94 | } | |
| 95 | else | |
| 96 | { | |
| 97 | 8 | nextRange = null; |
| 98 | } | |
| 99 | ||
| 100 | } | |
| 101 | } | |
| 102 | ||
| 103 | 1 | @Override |
| 104 | public void remove() | |
| 105 | { | |
| 106 | 1 | throw new UnsupportedOperationException(); |
| 107 | } | |
| 108 | } |