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| 1 | +--TEST-- |
| 2 | +Bug #65328 (Segfault when getting SplStack object Value) |
| 3 | +--FILE-- |
| 4 | +<?php |
| 5 | +/** |
| 6 | + * @author AlexanderC |
| 7 | + */ |
| 8 | + |
| 9 | +class Tree |
| 10 | +{ |
| 11 | + /** |
| 12 | + * @var Node |
| 13 | + */ |
| 14 | + protected $head; |
| 15 | + |
| 16 | + /** |
| 17 | + * @param Node $head |
| 18 | + */ |
| 19 | + public function __construct(Node $head = null) |
| 20 | + { |
| 21 | + $this->head = $head ? : new Node('HEAD'); |
| 22 | + } |
| 23 | + |
| 24 | + /** |
| 25 | + * @return Node |
| 26 | + */ |
| 27 | + public function getHead() |
| 28 | + { |
| 29 | + return $this->head; |
| 30 | + } |
| 31 | + |
| 32 | + /** |
| 33 | + * @param mixed $uid |
| 34 | + * @return Node|bool |
| 35 | + */ |
| 36 | + public function find($uid) |
| 37 | + { |
| 38 | + $iterator = $this->getIterator(); |
| 39 | + |
| 40 | + /** @var Node $node */ |
| 41 | + foreach($iterator as $node) { |
| 42 | + if($node->getUid() === $uid) { |
| 43 | + return $node; |
| 44 | + } |
| 45 | + } |
| 46 | + |
| 47 | + return false; |
| 48 | + } |
| 49 | + |
| 50 | + /** |
| 51 | + * @param mixed $uid |
| 52 | + * @return \SplStack |
| 53 | + */ |
| 54 | + public function & findAll($uid) |
| 55 | + { |
| 56 | + $result = new \SplStack(); |
| 57 | + |
| 58 | + /** @var Node $node */ |
| 59 | + foreach($this->getIterator() as $node) { |
| 60 | + if($node->getUid() == $uid) { |
| 61 | + $result->push($node); |
| 62 | + } |
| 63 | + } |
| 64 | + |
| 65 | + return $result; |
| 66 | + } |
| 67 | + |
| 68 | + /** |
| 69 | + * @return \RecursiveIteratorIterator |
| 70 | + */ |
| 71 | + public function getIterator() |
| 72 | + { |
| 73 | + return new \RecursiveIteratorIterator( |
| 74 | + $this->head->getChildren(), |
| 75 | + \RecursiveIteratorIterator::SELF_FIRST |
| 76 | + ); |
| 77 | + } |
| 78 | +} |
| 79 | + |
| 80 | +class Node extends \RecursiveArrayIterator implements \Countable |
| 81 | +{ |
| 82 | + /** |
| 83 | + * @var array |
| 84 | + */ |
| 85 | + protected $children = []; |
| 86 | + |
| 87 | + /** |
| 88 | + * @var Node |
| 89 | + */ |
| 90 | + protected $parent; |
| 91 | + |
| 92 | + /** |
| 93 | + * @var mixed |
| 94 | + */ |
| 95 | + protected $data; |
| 96 | + |
| 97 | + /** |
| 98 | + * @var mixed |
| 99 | + */ |
| 100 | + protected $uid; |
| 101 | + |
| 102 | + /** |
| 103 | + * @var int |
| 104 | + */ |
| 105 | + protected $index = 0; |
| 106 | + |
| 107 | + /** |
| 108 | + * @var bool |
| 109 | + */ |
| 110 | + protected $assureUnique; |
| 111 | + |
| 112 | + /** |
| 113 | + * @param mixed $data |
| 114 | + * @param mixed $uid |
| 115 | + * @param Node $parent |
| 116 | + * @param bool $assureUnique |
| 117 | + */ |
| 118 | + public function __construct($data, $uid = null, Node $parent = null, $assureUnique = false) |
| 119 | + { |
| 120 | + if(null !== $parent) { |
| 121 | + $this->parent = $parent; |
| 122 | + } |
| 123 | + |
| 124 | + $this->data = $data; |
| 125 | + $this->uid = $uid ? : uniqid(sha1(serialize($data)), true); |
| 126 | + $this->assureUnique = $assureUnique; |
| 127 | + } |
| 128 | + |
| 129 | + /** |
| 130 | + * @param mixed $uid |
| 131 | + */ |
| 132 | + public function setUid($uid) |
| 133 | + { |
| 134 | + $this->uid = $uid; |
| 135 | + } |
| 136 | + |
| 137 | + /** |
| 138 | + * @return mixed |
| 139 | + */ |
| 140 | + public function getUid() |
| 141 | + { |
| 142 | + return $this->uid; |
| 143 | + } |
| 144 | + |
| 145 | + /** |
| 146 | + * @param Node $child |
| 147 | + */ |
| 148 | + public function addChild(Node $child) |
| 149 | + { |
| 150 | + $child->setParent($this); |
| 151 | + $this->children[] = $child; |
| 152 | + } |
| 153 | + |
| 154 | + /** |
| 155 | + * @param array $children |
| 156 | + */ |
| 157 | + public function setChildren(array $children) |
| 158 | + { |
| 159 | + $this->children = $children; |
| 160 | + } |
| 161 | + |
| 162 | + /** |
| 163 | + * @return array |
| 164 | + */ |
| 165 | + public function getChildrenArray() |
| 166 | + { |
| 167 | + return $this->children; |
| 168 | + } |
| 169 | + |
| 170 | + /** |
| 171 | + * @param mixed $data |
| 172 | + */ |
| 173 | + public function setData($data) |
| 174 | + { |
| 175 | + $this->data = $data; |
| 176 | + } |
| 177 | + |
| 178 | + /** |
| 179 | + * @return mixed |
| 180 | + */ |
| 181 | + public function getData() |
| 182 | + { |
| 183 | + return $this->data; |
| 184 | + } |
| 185 | + |
| 186 | + /** |
| 187 | + * @param Node $parent |
| 188 | + * @throws \RuntimeException |
| 189 | + */ |
| 190 | + public function setParent(Node $parent) |
| 191 | + { |
| 192 | + if(true === $this->assureUnique && !self::checkUnique($parent, $this->uid)) { |
| 193 | + throw new \RuntimeException("Node uid is not unique in assigned node tree"); |
| 194 | + } |
| 195 | + |
| 196 | + $this->parent = $parent; |
| 197 | + } |
| 198 | + |
| 199 | + /** |
| 200 | + * @param Node $node |
| 201 | + * @param mixed $uid |
| 202 | + * @return bool |
| 203 | + */ |
| 204 | + protected static function checkUnique(Node $node, $uid) |
| 205 | + { |
| 206 | + $headNode = $node; |
| 207 | + do { |
| 208 | + $headNode = $node; |
| 209 | + } while($node = $node->getParent()); |
| 210 | + |
| 211 | + $tree = new Tree($headNode); |
| 212 | + |
| 213 | + return !$tree->find($uid); |
| 214 | + } |
| 215 | + |
| 216 | + /** |
| 217 | + * @return \IJsonRPC\Helpers\Tree\Node |
| 218 | + */ |
| 219 | + public function getParent() |
| 220 | + { |
| 221 | + return $this->parent; |
| 222 | + } |
| 223 | + |
| 224 | + /** |
| 225 | + * @return Node |
| 226 | + */ |
| 227 | + public function current() |
| 228 | + { |
| 229 | + return $this->children[$this->index]; |
| 230 | + } |
| 231 | + |
| 232 | + /** |
| 233 | + * @return scalar |
| 234 | + */ |
| 235 | + public function key() |
| 236 | + { |
| 237 | + return $this->index; |
| 238 | + } |
| 239 | + |
| 240 | + /** |
| 241 | + * @return void |
| 242 | + */ |
| 243 | + public function next() |
| 244 | + { |
| 245 | + ++$this->index; |
| 246 | + } |
| 247 | + |
| 248 | + /** |
| 249 | + * @return void |
| 250 | + */ |
| 251 | + public function rewind() |
| 252 | + { |
| 253 | + $this->index = 0; |
| 254 | + } |
| 255 | + |
| 256 | + /** |
| 257 | + * @return bool |
| 258 | + */ |
| 259 | + public function valid() |
| 260 | + { |
| 261 | + return array_key_exists($this->index, $this->children); |
| 262 | + } |
| 263 | + |
| 264 | + /** |
| 265 | + * @return int |
| 266 | + */ |
| 267 | + public function count() |
| 268 | + { |
| 269 | + return count($this->children); |
| 270 | + } |
| 271 | + |
| 272 | + /** |
| 273 | + * @return bool |
| 274 | + */ |
| 275 | + public function hasChildren() |
| 276 | + { |
| 277 | + return !empty($this->children); |
| 278 | + } |
| 279 | + |
| 280 | + /** |
| 281 | + * @return \RecursiveArrayIterator |
| 282 | + */ |
| 283 | + public function getChildren() |
| 284 | + { |
| 285 | + return new \RecursiveArrayIterator($this->children); |
| 286 | + } |
| 287 | +} |
| 288 | + |
| 289 | +$tree = new Tree(); |
| 290 | +$node1 = new Node('value1', 1); |
| 291 | +$tree->getHead()->addChild($node1); |
| 292 | +$node2 = new Node('value2', 2); |
| 293 | +$node1->addChild($node2); |
| 294 | + |
| 295 | +print_r($tree->findAll(2)->offsetGet(0)); |
| 296 | +--EXPECTF-- |
| 297 | +Node Object |
| 298 | +( |
| 299 | + [children:protected] => Array |
| 300 | + ( |
| 301 | + ) |
| 302 | + |
| 303 | + [parent:protected] => Node Object |
| 304 | + ( |
| 305 | + [children:protected] => Array |
| 306 | + ( |
| 307 | + [0] => Node Object |
| 308 | + *RECURSION* |
| 309 | + ) |
| 310 | + |
| 311 | + [parent:protected] => Node Object |
| 312 | + ( |
| 313 | + [children:protected] => Array |
| 314 | + ( |
| 315 | + [0] => Node Object |
| 316 | + *RECURSION* |
| 317 | + ) |
| 318 | + |
| 319 | + [parent:protected] => |
| 320 | + [data:protected] => HEAD |
| 321 | + [uid:protected] => %s |
| 322 | + [index:protected] => 0 |
| 323 | + [assureUnique:protected] => |
| 324 | + [storage:ArrayIterator:private] => Array |
| 325 | + ( |
| 326 | + ) |
| 327 | + |
| 328 | + ) |
| 329 | + |
| 330 | + [data:protected] => value1 |
| 331 | + [uid:protected] => 1 |
| 332 | + [index:protected] => 1 |
| 333 | + [assureUnique:protected] => |
| 334 | + [storage:ArrayIterator:private] => Array |
| 335 | + ( |
| 336 | + ) |
| 337 | + |
| 338 | + ) |
| 339 | + |
| 340 | + [data:protected] => value2 |
| 341 | + [uid:protected] => 2 |
| 342 | + [index:protected] => 0 |
| 343 | + [assureUnique:protected] => |
| 344 | + [storage:ArrayIterator:private] => Array |
| 345 | + ( |
| 346 | + ) |
| 347 | + |
| 348 | +) |
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