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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
* 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.revplot;
import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.lib.Ref;
/**
* A commit reference to a commit in the DAG.
*
* @param <L>
* type of lane being used by the plotter.
* @see PlotCommitList
*/
public class PlotCommit<L extends PlotLane> extends RevCommit {
static final PlotCommit[] NO_CHILDREN = {};
static final PlotLane[] NO_LANES = {};
PlotLane[] passingLanes;
PlotLane lane;
PlotCommit[] children;
final Ref[] refs;
/**
* Create a new commit.
*
* @param id
* the identity of this commit.
* @param tags
* the tags associated with this commit, null for no tags
*/
protected PlotCommit(final AnyObjectId id, final Ref[] tags) {
super(id);
this.refs = tags;
passingLanes = NO_LANES;
children = NO_CHILDREN;
}
void addPassingLane(final PlotLane c) {
final int cnt = passingLanes.length;
if (cnt == 0)
passingLanes = new PlotLane[] { c };
else if (cnt == 1)
passingLanes = new PlotLane[] { passingLanes[0], c };
else {
final PlotLane[] n = new PlotLane[cnt + 1];
System.arraycopy(passingLanes, 0, n, 0, cnt);
n[cnt] = c;
passingLanes = n;
}
}
void addChild(final PlotCommit c) {
final int cnt = children.length;
if (cnt == 0)
children = new PlotCommit[] { c };
else if (cnt == 1)
children = new PlotCommit[] { children[0], c };
else {
final PlotCommit[] n = new PlotCommit[cnt + 1];
System.arraycopy(children, 0, n, 0, cnt);
n[cnt] = c;
children = n;
}
}
/**
* Get the number of child commits listed in this commit.
*
* @return number of children; always a positive value but can be 0.
*/
public final int getChildCount() {
return children.length;
}
/**
* Get the nth child from this commit's child list.
*
* @param nth
* child index to obtain. Must be in the range 0 through
* {@link #getChildCount()}-1.
* @return the specified child.
* @throws ArrayIndexOutOfBoundsException
* an invalid child index was specified.
*/
public final PlotCommit getChild(final int nth) {
return children[nth];
}
/**
* Determine if the given commit is a child (descendant) of this commit.
*
* @param c
* the commit to test.
* @return true if the given commit built on top of this commit.
*/
public final boolean isChild(final PlotCommit c) {
for (final PlotCommit a : children)
if (a == c)
return true;
return false;
}
/**
* Obtain the lane this commit has been plotted into.
*
* @return the assigned lane for this commit.
*/
public final L getLane() {
return (L) lane;
}
@Override
public void reset() {
passingLanes = NO_LANES;
children = NO_CHILDREN;
lane = null;
super.reset();
}
}
|
