Class |
Line # |
Actions |
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RangeElementsIterator | 34 | 19 | 10 |
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 | 2699 | RangeElementsIterator(Iterator<int[]> it) |
47 | { | |
48 | 2699 | rangeIterator = it; |
49 | 2699 | if (rangeIterator.hasNext()) |
50 | { | |
51 | 2699 | nextRange = rangeIterator.next(); |
52 | 2699 | next = nextRange[0]; |
53 | 2699 | last = nextRange[1]; |
54 | } | |
55 | } | |
56 | ||
57 | 752307 | @Override |
58 | public boolean hasNext() | |
59 | { | |
60 | 752525 | return rangeIterator.hasNext() || next <= last; |
61 | } | |
62 | ||
63 | 375420 | @Override |
64 | public Integer next() | |
65 | { | |
66 | 375592 | if (!hasNext()) |
67 | { | |
68 | 4 | throw new NoSuchElementException(); |
69 | } | |
70 | ||
71 | 375601 | current = next; |
72 | ||
73 | // recalculate next | |
74 | 375666 | next++; |
75 | ||
76 | // if there are more ranges need to check if next is in a range | |
77 | 375681 | checkNextRange(); |
78 | 375675 | return current; |
79 | } | |
80 | ||
81 | /** | |
82 | * Check how next position relates to next range, and update next position if | |
83 | * necessary | |
84 | */ | |
85 | 375473 | private void checkNextRange() |
86 | { | |
87 | 375654 | if (nextRange != null && next > nextRange[1]) |
88 | { | |
89 | 2455 | if (rangeIterator.hasNext()) |
90 | { | |
91 | 1 | nextRange = rangeIterator.next(); |
92 | 1 | next = nextRange[0]; |
93 | 1 | last = nextRange[1]; |
94 | } | |
95 | else | |
96 | { | |
97 | 2454 | nextRange = null; |
98 | } | |
99 | ||
100 | } | |
101 | } | |
102 | ||
103 | 1 | @Override |
104 | public void remove() | |
105 | { | |
106 | 1 | throw new UnsupportedOperationException(); |
107 | } | |
108 | } |