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
|
/*
* Copyright (C) 2008-2009, Johannes E. Schindelin <johannes.schindelin@gmx.de>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.diff;
/**
* Arbitrary sequence of elements with fast comparison support.
* <p>
* A sequence of elements is defined to contain elements in the index range
* <code>[0, {@link #size()})</code>, like a standard Java List implementation.
* Unlike a List, the members of the sequence are not directly obtainable, but
* element equality can be tested if two Sequences are the same implementation.
* <p>
* An implementation may chose to implement the equals semantic as necessary,
* including fuzzy matching rules such as ignoring insignificant sub-elements,
* e.g. ignoring whitespace differences in text.
* <p>
* Implementations of Sequence are primarily intended for use in content
* difference detection algorithms, to produce an {@link EditList} of
* {@link Edit} instances describing how two Sequence instances differ.
*/
public interface Sequence {
/** @return total number of items in the sequence. */
public int size();
/**
* Determine if the i-th member is equal to the j-th member.
* <p>
* Implementations must ensure <code>equals(thisIdx,other,otherIdx)</code>
* returns the same as <code>other.equals(otherIdx,this,thisIdx)</code>.
*
* @param thisIdx
* index within <code>this</code> sequence; must be in the range
* <code>[ 0, this.size() )</code>.
* @param other
* another sequence; must be the same implementation class, that
* is <code>this.getClass() == other.getClass()</code>.
* @param otherIdx
* index within <code>other</code> sequence; must be in the range
* <code>[ 0, other.size() )</code>.
* @return true if the elements are equal; false if they are not equal.
*/
public boolean equals(int thisIdx, Sequence other, int otherIdx);
}
|
