blob: c8e23619acfa95f99f1b155fafff0fa0a6f97811 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/*******************************************************************************
* Copyright (c) 2011 protos software gmbh (http://www.protos.de).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* CONTRIBUTORS:
* Henrik Rentz-Reichert (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.generator.base;
import java.util.ArrayList;
import java.util.List;
/**
* helper class to associate indices with collection items
*
* @author Henrik Rentz-Reichert
*
*/
public class Indexed<T> {
private T value;
private int index;
private boolean first;
private boolean last;
/**
* @return the original item of the collection
*/
public T getValue() {
return value;
}
/**
* @return the zero based index plus the offset
*/
public int getIndex0() {
return index;
}
/**
* @return the one based index plus the offset
*/
public int getIndex1() {
return index + 1;
}
/**
* @return true if this is the first element
*/
public boolean isFirst() {
return first;
}
/**
* @return true if this is the last element
*/
public boolean isLast() {
return last;
}
private Indexed(T value, int index, boolean first, boolean last) {
super();
this.value = value;
this.index = index;
this.first = first;
this.last = last;
}
/**
* @param iterable the initial collection of items
* @return an indexed collection of items
*/
public static <T> Iterable<Indexed<T>> indexed(Iterable<T> iterable) {
return indexed(iterable, 0);
}
/**
* @param iterable the initial collection of items
* @param offset index0 starts at offset, index1 at offset+1
* @return an indexed collection of items
*/
public static <T> Iterable<Indexed<T>> indexed(Iterable<T> iterable, int offset) {
List<T> all = new ArrayList<T>();
for (T t : iterable) {
all.add(t);
}
List<Indexed<T>> result = new ArrayList<Indexed<T>>();
int counter = 0;
for (T e : all) {
result.add(new Indexed<T>(e, offset+counter, counter == 0, counter == all.size() - 1));
counter++;
}
return result;
}
}
|
