DoublyLinkedList::tail() - Code Metrics - Inspection of "Functional methods working on Linked List structur..." - MBHFramework/structures - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — 1.x ( b30111...94f19e )

by Ulises Jeremias

created 2018-01-01 05:45 UTC

DoublyLinkedList::tail() A

↳ Parent: DoublyLinkedList

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	4
rs	10
c	0
b	0
f	0
cc	1
eloc	2
nc	1
nop	0

<?php namespace Mbh\Collection;

/**
 * MBHFramework
 *
 * @link      https://github.com/MBHFramework/mbh-framework
 * @copyright Copyright (c) 2017 Ulises Jeremias Cornejo Fandos
 * @license   https://github.com/MBHFramework/mbh-framework/blob/master/LICENSE (MIT License)
 */

use Mbh\Collection\Interfaces\Collection as CollectionInterface;
use Mbh\Collection\Interfaces\Functional as FunctionalInterface;
use Mbh\Collection\Interfaces\Sequenceable as SequenceableInterface;
use Mbh\Collection\Internal\Interfaces\LinkedNode;
use Mbh\Collection\Internal\LinkedDataNode;
use Mbh\Collection\Internal\LinkedTerminalNode;
use Mbh\Interfaces\Allocated as AllocatedInterface;
use Mbh\Traits\Capacity;
use Mbh\Traits\EmptyGuard;
use Traversable;
use OutOfBoundsException;
use Exception;

/**
 * The DoublyLinkedList
 *
 *
 *
 * @package structures
 * @author Ulises Jeremias Cornejo Fandos <[email protected]>
 */
final class DoublyLinkedList implements AllocatedInterface, SequenceableInterface
{
    use Traits\Collection;
    use Traits\Functional;
    use Traits\Builder;
    use Capacity;
    use EmptyGuard;

    const MIN_CAPACITY = 8.0;

    private $head;
    private $tail;
    private $size = 0;
    private $current;
    private $offset = -1;

    /**
     * Create an fixed array
     *
     * @param array|Traversable $array data
     */
    public function __construct($array = null)
    {
        $this->init();

        if ($array) {
            $this->pushAll($array);
        }
    }

    private function init()
    {
        $this->head = $head = new LinkedTerminalNode();
        $this->tail = $tail = new LinkedTerminalNode();

        $head->setNext($tail);
        $tail->setPrev($head);

        $this->current = $this->head;
    }

    public function copy()
    {
        return $this->copyFromContext($this->head->next());
    }

    public function isEmpty(): bool
    {
        return $this->size === 0;
    }

    private function pushAll($values)
    {
        foreach ($values as $key => $value) {
            $this->insertBetween($this->tail->prev(), $this->tail, $value);
            $this->offset = $this->size - 1;
        }
    }

    public function push(...$values)
    {
        $this->pushAll($values);
    }

    public function unshift(...$values)
    {
        foreach ($values as &$value) {
            $this->insertBetween($this->head, $this->head->next(), $value);
            $this->offset = 0;
        }
    }

    public function pop()
    {
        $this->emptyGuard(__METHOD__);

        $n = $this->seekTail();
        $this->removeNode($n);

        return $n->value();
    }

    public function shift()
    {
        $this->emptyGuard(__METHOD__);

        $n = $this->seekHead();
        $this->removeNode($n);

        return $n->value();
    }

    public function first()
    {
        $this->emptyGuard(__METHOD__);
        return $this->seekHead()->value();
    }

    public function last()
    {
        $this->emptyGuard(__METHOD__);
        return $this->seekTail()->value();
    }

    /**
     * @link http://php.net/manual/en/countable.count.php
     * @return int
     */
    public function count(): int
    {
        return $this->size;
    }

    public function get(int $index)
    {
        return $this[$index];
    }

    /**
     * @inheritDoc
     */
    public function set(int $index, $value)
    {
        $this->offsetSet($index, $value);
    }

    /**
     * @link http://php.net/manual/en/arrayaccess.offsetexists.php
     * @param int $offset
     * @return boolean
     */
    public function offsetExists($offset)
    {
        $index = $this->intGuard($offset);
        return $index >= 0 && $index < $this->count();
    }

    /**
     * @link http://php.net/manual/en/arrayaccess.offsetget.php
     * @param int $offset
     * @return mixed
     * @throws OutOfBoundsException
     */
    public function offsetGet($offset)
    {
        $n = $this->guardedSeek($offset, __METHOD__);
        return $n->value();
    }

    /**
     * @link http://php.net/manual/en/arrayaccess.offsetset.php
     * @param int|null $offset
     * @param mixed $value
     * @return void
     * @throws OutOfBoundsException
     */
    public function offsetSet($offset, $value)
    {
        if ($offset === null) {
            $this->push($value);
            return;
        }
        $n = $this->guardedSeek($offset, __METHOD__);
        $n->setValue($value);
    }

    /**
     * @link http://php.net/manual/en/arrayaccess.offsetunset.php
     * @param int $offset
     * @return void
     */
    public function offsetUnset($offset)
    {
        $index = $this->intGuard($offset);
        if ($this->offsetExists($index)) {
            $n = $this->seekTo($index);
            $this->removeNode($n);
            $this->current = $n->prev();
            $this->offset--;
        }
    }

    public function insert(int $index, ...$values)
    {
        foreach ($values as &$value) {
            $this->insertBefore($index++, $value);
        }
    }

    protected function getValues(): Traversable
    {
        return SplFixedArray::fromArray($this->toArray());

    }

    protected function setValues(Traversable $traversable)
    {
        $this->clear();
        $this->pushAll($traversable);
    }

    /**
     * @param int $position
     * @param mixed $value
     * @return void
     *
     * @throws OutOfBoundsException
     */
    public function insertBefore(int $position, $value)
    {
        $n = $this->guardedSeek($position, __METHOD__);
        $this->insertBetween($n->prev(), $n, $value);
        $this->current = $this->current->next();
        $this->offset++;
    }

    /**
     * @param int $position
     * @param mixed $value
     * @return void
     *
     * @throws OutOfBoundsException
     */
    public function insertAfter(int $position, $value)
    {
        $n = $this->guardedSeek($position, __METHOD__);
        $this->insertBetween($n, $n->next(), $value);
        $this->current = $this->current->prev();
    }

    /**
     * @link http://php.net/manual/en/iterator.current.php
     * @return mixed
     */
    public function current()
    {
        return $this->current->value();
    }

    /**
     * @link http://php.net/manual/en/iterator.next.php
     * @return void
     */
    public function next()
    {
        $this->forward();
    }

    /**
     * @return void
     */
    public function prev()
    {
        $this->backward();
    }

    /**
     * @link http://php.net/manual/en/iterator.key.php
     * @return mixed
     */
    public function key()
    {
        return $this->offset;
    }

    /**
     * @link http://php.net/manual/en/iterator.valid.php
     * @return boolean
     */
    public function valid()
    {
        return $this->current instanceof LinkedDataNode;
    }

    /**
     * @link http://php.net/manual/en/iterator.rewind.php
     * @return void
     */
    public function rewind()
    {
        $this->current = $this->head;
        $this->offset = -1;
        $this->forward();
    }

    public function search($value)
    {
        return $this->indexOf($value);
    }

    /**
     * @link http://php.net/manual/en/seekableiterator.seek.php
     * @param int $position
     * @return mixed
     * @throws OutOfBoundsException
     * @throws Exception
     */
    public function seek($position)
    {
        $index = $this->intGuard($position);
        $this->indexGuard($index, __METHOD__);

        if ($index === 0) {
            return $this->seekHead()->value();
        } elseif ($index === $this->size - 1) {
            return $this->seekTail()->value();
        }

        return $this->seekTo($index)->value();
    }

    /**
     * @param mixed $i
     * @return int
     * @throws Exception
     */
    private function intGuard($i)
    {
        if (filter_var($i, FILTER_VALIDATE_INT) === false) {
            throw new Exception;
        }

        return (int) $i;
    }


    /**
     * @param $value
     * @param callable $callback
     * @return int
     */
    public function indexOf($value, callable $callback = null)
    {
        $equal = $f ?? function ($a, $b) {

            return $a === $b;
        };

        $filter = $this->filter(function ($item) use ($equal, $value) {
            return $equal($item, $value);
        });

        foreach ($filter as $key => $value) {
            return $key;
        }

        return -1;
    }

    public function contains(...$values): bool
    {
        return $this->indexOf($values, $f) >= 0;

    }

    /**
     * Extract the elements after the first of a list, which must be non-empty.
     * @return LinkedList
filter:
    dependency_paths: ["lib/*"]
     * @throws EmptyException
     */
    public function tail()
    {
        $this->emptyGuard(__METHOD__);
        return $this->copyFromContext($this->head->next()->next());
    }

    public function __clone()
    {
        $list = $this->copyFromContext($this->head->next());

        $this->head = $list->head;
        $this->tail = $list->tail;

        $this->current = $this->head;
        $this->offset = -1;

        $this->size = $list->size;
    }

    private function copyFromContext(LinkedNode $context)
    {
        $list = new static();

        for ($n = $context; $n !== $this->tail; $n = $n->next()) {
            /**
             * @var LinkedDataNode $n
             */
            $list->push($n->value());
        }

        return $list;
    }

    private function insertBetween(LinkedNode $a, LinkedNode $b, $value)
    {
        $n = new LinkedDataNode($value);

        $a->setNext($n);
        $b->setPrev($n);

        $n->setPrev($a);
        $n->setNext($b);

        $this->current = $n;
        $this->size++;
    }

    private function forward()
    {
        $this->current = $this->current->next();
        $this->offset++;
    }

    private function backward()
    {
        $this->current = $this->current->prev();
        $this->offset--;
    }

    public function remove(int $index)
    {
        return $this->removeNode($this->guardedSeek($index, __METHOD__));
class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
if ($a->getObject()) {
    }

    private function removeNode(LinkedNode $n)
    {
        $prev = $n->prev();
        $next = $n->next();

        $prev->setNext($next);
        $next->setPrev($prev);

        $this->size--;
    }

    /**
     * @return LinkedDataNode
     */
    private function seekTail()
    {
        $this->offset = $this->size - 1;
        return $this->current = $this->tail->prev();
    }

    /**
     * @return LinkedDataNode
     */
    private function seekHead()
    {
        $this->offset = 0;
        return $this->current = $this->head->next();
    }

    /**
     * @param $offset
     * @return LinkedDataNode
     */
    private function seekTo($offset)
    {
        $n = abs($diff = $this->offset - $offset);
        $action = ($diff < 0) ? 'forward' : 'backward';

        for ($i = 0; $i < $n; $i++) {
            $this->$action();
        }

        return $this->current;
    }

    private function indexGuard($offset, $method)
    {
        if (!$this->offsetExists($offset)) {
            throw new OutOfBoundsException(
                "{$method} was called with invalid index: {$offset}"
            );
        }
    }

    private function guardedSeek($index, $method)
    {
        $index = $this->intGuard($index);
        $this->indexGuard($index, $method);

        return $this->seekTo($index);
    }

    public function toArray(): array
    {
        $array = [];
        $context = $this->head->next();

        for ($n = $context; $n !== $this->tail; $n = $n->next()) {
            /**
             * @var LinkedDataNode $n
             */
            $array[] = $n->value();
        }

        return $array;
    }

    public function unserialize($serialized)
    {
    }

    public function clear()
    {
        $this->init();
    }
}


1			<?php namespace Mbh\Collection;
2
3			/**
4			* MBHFramework
5			*
6			* @link https://github.com/MBHFramework/mbh-framework
7			* @copyright Copyright (c) 2017 Ulises Jeremias Cornejo Fandos
8			* @license https://github.com/MBHFramework/mbh-framework/blob/master/LICENSE (MIT License)
9			*/
10
11			use Mbh\Collection\Interfaces\Collection as CollectionInterface;
12			use Mbh\Collection\Interfaces\Functional as FunctionalInterface;
13			use Mbh\Collection\Interfaces\Sequenceable as SequenceableInterface;
14			use Mbh\Collection\Internal\Interfaces\LinkedNode;
15			use Mbh\Collection\Internal\LinkedDataNode;
16			use Mbh\Collection\Internal\LinkedTerminalNode;
17			use Mbh\Interfaces\Allocated as AllocatedInterface;
18			use Mbh\Traits\Capacity;
19			use Mbh\Traits\EmptyGuard;
20			use Traversable;
21			use OutOfBoundsException;
22			use Exception;
23
24			/**
25			* The DoublyLinkedList
26			*
27			*
28			*
29			* @package structures
30			* @author Ulises Jeremias Cornejo Fandos <[email protected]>
31			*/
32			final class DoublyLinkedList implements AllocatedInterface, SequenceableInterface
33			{
34			use Traits\Collection;
35			use Traits\Functional;
36			use Traits\Builder;
37			use Capacity;
38			use EmptyGuard;
39
40			const MIN_CAPACITY = 8.0;
41
42			private $head;
43			private $tail;
44			private $size = 0;
45			private $current;
46			private $offset = -1;
47
48			/**
49			* Create an fixed array
50			*
51			* @param array\|Traversable $array data
52			*/
53			public function __construct($array = null)
54			{
55			$this->init();
56
57			if ($array) {
58			$this->pushAll($array);
59			}
60			}
61
62			private function init()
63			{
64			$this->head = $head = new LinkedTerminalNode();
65			$this->tail = $tail = new LinkedTerminalNode();
66
67			$head->setNext($tail);
68			$tail->setPrev($head);
69
70			$this->current = $this->head;
71			}
72
73			public function copy()
74			{
75			return $this->copyFromContext($this->head->next());
76			}
77
78			public function isEmpty(): bool
79			{
80			return $this->size === 0;
81			}
82
83			private function pushAll($values)
84			{
85			foreach ($values as $key => $value) {
86			$this->insertBetween($this->tail->prev(), $this->tail, $value);
87			$this->offset = $this->size - 1;
88			}
89			}
90
91			public function push(...$values)
92			{
93			$this->pushAll($values);
94			}
95
96			public function unshift(...$values)
97			{
98			foreach ($values as &$value) {
99			$this->insertBetween($this->head, $this->head->next(), $value);
100			$this->offset = 0;
101			}
102			}
103
104			public function pop()
105			{
106			$this->emptyGuard(__METHOD__);
107
108			$n = $this->seekTail();
109			$this->removeNode($n);
110
111			return $n->value();
112			}
113
114			public function shift()
115			{
116			$this->emptyGuard(__METHOD__);
117
118			$n = $this->seekHead();
119			$this->removeNode($n);
120
121			return $n->value();
122			}
123
124			public function first()
125			{
126			$this->emptyGuard(__METHOD__);
127			return $this->seekHead()->value();
128			}
129
130			public function last()
131			{
132			$this->emptyGuard(__METHOD__);
133			return $this->seekTail()->value();
134			}
135
136			/**
137			* @link http://php.net/manual/en/countable.count.php
138			* @return int
139			*/
140			public function count(): int
141			{
142			return $this->size;
143			}
144
145			public function get(int $index)
146			{
147			return $this[$index];
148			}
149
150			/**
151			* @inheritDoc
152			*/
153			public function set(int $index, $value)
154			{
155			$this->offsetSet($index, $value);
156			}
157
158			/**
159			* @link http://php.net/manual/en/arrayaccess.offsetexists.php
160			* @param int $offset
161			* @return boolean
162			*/
163			public function offsetExists($offset)
164			{
165			$index = $this->intGuard($offset);
166			return $index >= 0 && $index < $this->count();
167			}
168
169			/**
170			* @link http://php.net/manual/en/arrayaccess.offsetget.php
171			* @param int $offset
172			* @return mixed
173			* @throws OutOfBoundsException
174			*/
175			public function offsetGet($offset)
176			{
177			$n = $this->guardedSeek($offset, __METHOD__);
178			return $n->value();
179			}
180
181			/**
182			* @link http://php.net/manual/en/arrayaccess.offsetset.php
183			* @param int\|null $offset
184			* @param mixed $value
185			* @return void
186			* @throws OutOfBoundsException
187			*/
188			public function offsetSet($offset, $value)
189			{
190			if ($offset === null) {
191			$this->push($value);
192			return;
193			}
194			$n = $this->guardedSeek($offset, __METHOD__);
195			$n->setValue($value);
196			}
197
198			/**
199			* @link http://php.net/manual/en/arrayaccess.offsetunset.php
200			* @param int $offset
201			* @return void
202			*/
203			public function offsetUnset($offset)
204			{
205			$index = $this->intGuard($offset);
206			if ($this->offsetExists($index)) {
207			$n = $this->seekTo($index);
208			$this->removeNode($n);
209			$this->current = $n->prev();
210			$this->offset--;
211			}
212			}
213
214			public function insert(int $index, ...$values)
215			{
216			foreach ($values as &$value) {
217			$this->insertBefore($index++, $value);
218			}
219			}
220
221			protected function getValues(): Traversable
222			{
223			return SplFixedArray::fromArray($this->toArray());
			0 ignored issues – show Bug introduced 2018-01-01 05:14 UTC by Report Bug Copy Issue Report The type `Mbh\Collection\SplFixedArray` was not found. Did you mean `SplFixedArray`? If so, make sure to prefix the type with `\`. Loading history...
224			}
225
226			protected function setValues(Traversable $traversable)
227			{
228			$this->clear();
229			$this->pushAll($traversable);
230			}
231
232			/**
233			* @param int $position
234			* @param mixed $value
235			* @return void
236			*
237			* @throws OutOfBoundsException
238			*/
239			public function insertBefore(int $position, $value)
240			{
241			$n = $this->guardedSeek($position, __METHOD__);
242			$this->insertBetween($n->prev(), $n, $value);
243			$this->current = $this->current->next();
244			$this->offset++;
245			}
246
247			/**
248			* @param int $position
249			* @param mixed $value
250			* @return void
251			*
252			* @throws OutOfBoundsException
253			*/
254			public function insertAfter(int $position, $value)
255			{
256			$n = $this->guardedSeek($position, __METHOD__);
257			$this->insertBetween($n, $n->next(), $value);
258			$this->current = $this->current->prev();
259			}
260
261			/**
262			* @link http://php.net/manual/en/iterator.current.php
263			* @return mixed
264			*/
265			public function current()
266			{
267			return $this->current->value();
268			}
269
270			/**
271			* @link http://php.net/manual/en/iterator.next.php
272			* @return void
273			*/
274			public function next()
275			{
276			$this->forward();
277			}
278
279			/**
280			* @return void
281			*/
282			public function prev()
283			{
284			$this->backward();
285			}
286
287			/**
288			* @link http://php.net/manual/en/iterator.key.php
289			* @return mixed
290			*/
291			public function key()
292			{
293			return $this->offset;
294			}
295
296			/**
297			* @link http://php.net/manual/en/iterator.valid.php
298			* @return boolean
299			*/
300			public function valid()
301			{
302			return $this->current instanceof LinkedDataNode;
303			}
304
305			/**
306			* @link http://php.net/manual/en/iterator.rewind.php
307			* @return void
308			*/
309			public function rewind()
310			{
311			$this->current = $this->head;
312			$this->offset = -1;
313			$this->forward();
314			}
315
316			public function search($value)
317			{
318			return $this->indexOf($value);
319			}
320
321			/**
322			* @link http://php.net/manual/en/seekableiterator.seek.php
323			* @param int $position
324			* @return mixed
325			* @throws OutOfBoundsException
326			* @throws Exception
327			*/
328			public function seek($position)
329			{
330			$index = $this->intGuard($position);
331			$this->indexGuard($index, __METHOD__);
332
333			if ($index === 0) {
334			return $this->seekHead()->value();
335			} elseif ($index === $this->size - 1) {
336			return $this->seekTail()->value();
337			}
338
339			return $this->seekTo($index)->value();
340			}
341
342			/**
343			* @param mixed $i
344			* @return int
345			* @throws Exception
346			*/
347			private function intGuard($i)
348			{
349			if (filter_var($i, FILTER_VALIDATE_INT) === false) {
350			throw new Exception;
351			}
352
353			return (int) $i;
354			}
355
356
357			/**
358			* @param $value
359			* @param callable $callback
360			* @return int
361			*/
362			public function indexOf($value, callable $callback = null)
363			{
364			$equal = $f ?? function ($a, $b) {
			0 ignored issues – show Comprehensibility Best Practice introduced 2018-01-01 04:55 UTC by Report Bug Copy Issue Report The variable `$f` seems to never exist and therefore `isset` should always be `false`. Loading history...
365			return $a === $b;
366			};
367
368			$filter = $this->filter(function ($item) use ($equal, $value) {
369			return $equal($item, $value);
370			});
371
372			foreach ($filter as $key => $value) {
373			return $key;
374			}
375
376			return -1;
377			}
378
379			public function contains(...$values): bool
380			{
381			return $this->indexOf($values, $f) >= 0;
			0 ignored issues – show Comprehensibility Best Practice introduced 2018-01-01 04:55 UTC by Report Bug Copy Issue Report The variable `$f` seems to be never defined. Loading history...
382			}
383
384			/**
385			* Extract the elements after the first of a list, which must be non-empty.
386			* @return LinkedList
			0 ignored issues – show Bug introduced 2017-12-31 23:31 UTC by Report Bug Copy Issue Report The type `Mbh\Collection\LinkedList` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
387			* @throws EmptyException
388			*/
389			public function tail()
390			{
391			$this->emptyGuard(__METHOD__);
392			return $this->copyFromContext($this->head->next()->next());
393			}
394
395			public function __clone()
396			{
397			$list = $this->copyFromContext($this->head->next());
398
399			$this->head = $list->head;
400			$this->tail = $list->tail;
401
402			$this->current = $this->head;
403			$this->offset = -1;
404
405			$this->size = $list->size;
406			}
407
408			private function copyFromContext(LinkedNode $context)
409			{
410			$list = new static();
411
412			for ($n = $context; $n !== $this->tail; $n = $n->next()) {
413			/**
414			* @var LinkedDataNode $n
415			*/
416			$list->push($n->value());
417			}
418
419			return $list;
420			}
421
422			private function insertBetween(LinkedNode $a, LinkedNode $b, $value)
423			{
424			$n = new LinkedDataNode($value);
425
426			$a->setNext($n);
427			$b->setPrev($n);
428
429			$n->setPrev($a);
430			$n->setNext($b);
431
432			$this->current = $n;
433			$this->size++;
434			}
435
436			private function forward()
437			{
438			$this->current = $this->current->next();
439			$this->offset++;
440			}
441
442			private function backward()
443			{
444			$this->current = $this->current->prev();
445			$this->offset--;
446			}
447
448			public function remove(int $index)
449			{
450			return $this->removeNode($this->guardedSeek($index, __METHOD__));
			0 ignored issues – show Bug introduced 2018-01-01 05:14 UTC by Report Bug Copy Issue Report Are you sure the usage of `$this->removeNode($this-...ek($index, __METHOD__))` targeting `Mbh\Collection\DoublyLinkedList::removeNode()` seems to always return null. This check looks for function or method calls that always return null and whose return value is used. class A { function getObject() { return null; } } $a = new A(); if ($a->getObject()) { The method `getObject()` can return nothing but null, so it makes no sense to use the return value. The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes. Loading history...
451			}
452
453			private function removeNode(LinkedNode $n)
454			{
455			$prev = $n->prev();
456			$next = $n->next();
457
458			$prev->setNext($next);
459			$next->setPrev($prev);
460
461			$this->size--;
462			}
463
464			/**
465			* @return LinkedDataNode
466			*/
467			private function seekTail()
468			{
469			$this->offset = $this->size - 1;
470			return $this->current = $this->tail->prev();
471			}
472
473			/**
474			* @return LinkedDataNode
475			*/
476			private function seekHead()
477			{
478			$this->offset = 0;
479			return $this->current = $this->head->next();
480			}
481
482			/**
483			* @param $offset
484			* @return LinkedDataNode
485			*/
486			private function seekTo($offset)
487			{
488			$n = abs($diff = $this->offset - $offset);
489			$action = ($diff < 0) ? 'forward' : 'backward';
490
491			for ($i = 0; $i < $n; $i++) {
492			$this->$action();
493			}
494
495			return $this->current;
496			}
497
498			private function indexGuard($offset, $method)
499			{
500			if (!$this->offsetExists($offset)) {
501			throw new OutOfBoundsException(
502			"{$method} was called with invalid index: {$offset}"
503			);
504			}
505			}
506
507			private function guardedSeek($index, $method)
508			{
509			$index = $this->intGuard($index);
510			$this->indexGuard($index, $method);
511
512			return $this->seekTo($index);
513			}
514
515			public function toArray(): array
516			{
517			$array = [];
518			$context = $this->head->next();
519
520			for ($n = $context; $n !== $this->tail; $n = $n->next()) {
521			/**
522			* @var LinkedDataNode $n
523			*/
524			$array[] = $n->value();
525			}
526
527			return $array;
528			}
529
530			public function unserialize($serialized)
531			{
532			}
533
534			public function clear()
535			{
536			$this->init();
537			}
538			}
539

MBHFramework / structures

Push — 1.x ( b30111...94f19e )

DoublyLinkedList::tail() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

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