|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Sugarcrm\UpgradeSpec\Version\Graph; |
|
4
|
|
|
|
|
5
|
|
|
use Sugarcrm\UpgradeSpec\Version\Version; |
|
6
|
|
|
|
|
7
|
|
|
class Graph |
|
8
|
|
|
{ |
|
9
|
|
|
/** |
|
10
|
|
|
* @var AdjacencyList |
|
11
|
|
|
*/ |
|
12
|
|
|
private $graph; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* @var array |
|
16
|
|
|
*/ |
|
17
|
|
|
private $visited = []; |
|
18
|
|
|
|
|
19
|
|
|
/** |
|
20
|
|
|
* Graph constructor. |
|
21
|
|
|
* |
|
22
|
|
|
* @param AdjacencyList $graph |
|
23
|
|
|
*/ |
|
24
|
|
|
public function __construct(AdjacencyList $graph) |
|
25
|
|
|
{ |
|
26
|
|
|
$this->graph = $graph; |
|
27
|
|
|
} |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* @param Version $from |
|
31
|
|
|
* @param Version $to |
|
32
|
|
|
* |
|
33
|
|
|
* @return array |
|
34
|
|
|
*/ |
|
35
|
|
|
public function getPath(Version $from, Version $to) |
|
36
|
|
|
{ |
|
37
|
|
|
$destinations = $this->getDestinationVertexes($to); |
|
38
|
|
|
foreach ($this->getOriginVertexes($from) as $origin) { |
|
39
|
|
|
foreach ($destinations as $destination) { |
|
40
|
|
|
if ($path = $this->breadthFirstSearch($origin, $destination)) { |
|
41
|
|
|
return $this->getRealHops($path); |
|
42
|
|
|
} |
|
43
|
|
|
} |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
|
|
return []; |
|
47
|
|
|
} |
|
48
|
|
|
|
|
49
|
|
|
/** |
|
50
|
|
|
* @param $path |
|
51
|
|
|
* |
|
52
|
|
|
* @return array |
|
53
|
|
|
*/ |
|
54
|
|
|
private function getRealHops($path) |
|
55
|
|
|
{ |
|
56
|
|
|
$pairs = []; |
|
57
|
|
|
|
|
58
|
|
|
$first = $path[0]; |
|
59
|
|
|
foreach (range(1, count($path) - 1) as $index) { |
|
60
|
|
|
$second = $path[$index]; |
|
61
|
|
|
if ($first->isChildOf($second)) { |
|
62
|
|
|
$first = $second; |
|
63
|
|
|
continue; |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
$pairs[] = [$first, $second]; |
|
67
|
|
|
|
|
68
|
|
|
$first = $second; |
|
69
|
|
|
} |
|
70
|
|
|
|
|
71
|
|
|
return $pairs; |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
|
|
/** |
|
75
|
|
|
* Finds least number of hops (edges) between 2 nodes (vertices) |
|
76
|
|
|
* "breadth first" search |
|
77
|
|
|
* |
|
78
|
|
|
* @param Version $from |
|
79
|
|
|
* @param Version $to |
|
80
|
|
|
* |
|
81
|
|
|
* @return array |
|
82
|
|
|
*/ |
|
83
|
|
|
private function breadthFirstSearch(Version $from, Version $to) |
|
84
|
|
|
{ |
|
85
|
|
|
|
|
86
|
|
|
// mark all nodes as unvisited |
|
87
|
|
|
foreach ($this->graph as $vertex => $adj) { |
|
88
|
|
|
$this->visited[$vertex] = false; |
|
89
|
|
|
} |
|
90
|
|
|
|
|
91
|
|
|
// create an empty queue |
|
92
|
|
|
$queue = new \SplQueue(); |
|
93
|
|
|
|
|
94
|
|
|
// enqueue the origin vertex and mark as visited |
|
95
|
|
|
$queue->enqueue($from); |
|
96
|
|
|
$this->visited[(string) $from] = true; |
|
97
|
|
|
|
|
98
|
|
|
// this is used to track the path back from each node |
|
99
|
|
|
$path = []; |
|
100
|
|
|
$path[(string) $from] = new \SplDoublyLinkedList(); |
|
101
|
|
|
$path[(string) $from]->setIteratorMode( |
|
102
|
|
|
\SplDoublyLinkedList::IT_MODE_FIFO | \SplDoublyLinkedList::IT_MODE_KEEP |
|
103
|
|
|
); |
|
104
|
|
|
|
|
105
|
|
|
$path[(string) $from]->push($from); |
|
106
|
|
|
|
|
107
|
|
|
// while queue is not empty and destination not found |
|
108
|
|
|
while (!$queue->isEmpty() && !$queue->bottom()->isEqualTo($to, false)) { |
|
109
|
|
|
$t = $queue->dequeue(); |
|
110
|
|
|
|
|
111
|
|
|
if (!empty($this->graph[(string) $t])) { |
|
112
|
|
|
// for each adjacent neighbor |
|
113
|
|
|
foreach ($this->graph[(string) $t] as $vertex) { |
|
114
|
|
|
if (!$this->visited[(string) $vertex]) { |
|
115
|
|
|
// if not yet visited, enqueue vertex and mark as visited |
|
116
|
|
|
$queue->enqueue($vertex); |
|
117
|
|
|
$this->visited[(string) $vertex] = true; |
|
118
|
|
|
|
|
119
|
|
|
// add vertex to current path |
|
120
|
|
|
$path[(string) $vertex] = clone $path[(string) $t]; |
|
121
|
|
|
$path[(string) $vertex]->push($vertex); |
|
122
|
|
|
} |
|
123
|
|
|
} |
|
124
|
|
|
} |
|
125
|
|
|
} |
|
126
|
|
|
|
|
127
|
|
|
if (!isset($path[(string) $to])) { |
|
128
|
|
|
return []; |
|
129
|
|
|
} |
|
130
|
|
|
|
|
131
|
|
|
return iterator_to_array($path[(string) $to]); |
|
132
|
|
|
} |
|
133
|
|
|
|
|
134
|
|
|
/** |
|
135
|
|
|
* @param Version $from |
|
136
|
|
|
* |
|
137
|
|
|
* @return OrderedList |
|
|
|
|
|
|
138
|
|
|
*/ |
|
139
|
|
|
private function getOriginVertexes(Version $from) |
|
140
|
|
|
{ |
|
141
|
|
|
$aliases = $from->getAliases(); |
|
142
|
|
|
while ($from->isMinor()) { |
|
143
|
|
|
$from = $from->getParent(); |
|
|
|
|
|
|
144
|
|
|
$aliases = $aliases->merge($from->getAliases()); |
|
145
|
|
|
} |
|
146
|
|
|
|
|
147
|
|
|
return $aliases->filter(function (Version $version) { |
|
148
|
|
|
return isset($this->graph[$version]); |
|
149
|
|
|
}); |
|
150
|
|
|
} |
|
151
|
|
|
|
|
152
|
|
|
/** |
|
153
|
|
|
* @param Version $to |
|
154
|
|
|
* |
|
155
|
|
|
* @return OrderedList |
|
|
|
|
|
|
156
|
|
|
*/ |
|
157
|
|
|
private function getDestinationVertexes(Version $to) |
|
158
|
|
|
{ |
|
159
|
|
|
return $to->getAliases()->filter(function (Version $version) { |
|
160
|
|
|
return isset($this->graph[$version]); |
|
161
|
|
|
}); |
|
162
|
|
|
} |
|
163
|
|
|
} |
|
164
|
|
|
|
mikekamornikov /
UpgradeSpec
Loading history...
This check compares the return type specified in the
@returnannotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch.