Sequence::intersections() - Code Metrics - Inspection of "Complete introduction of Sequence::getTotalTimesta..." - thephpleague/period - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 13c894...975657 )

by ignace nyamagana

created 2019-03-16 19:31 UTC

Sequence::intersections() B

↳ Parent: Sequence

Complexity

Conditions	7
Paths	7

Size

Total Lines	27
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	17
CRAP Score	7

Importance

Changes

Metric	Value
cc	7
eloc	16
nc	7
nop	0
dl	0
loc	27
ccs	17
cts	17
cp	1
crap	7
rs	8.8333
c	0
b	0
f	0

<?php

/**
 * League.Period (https://period.thephpleague.com)
 *
 * (c) Ignace Nyamagana Butera <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace League\Period;

use ArrayAccess;
use Countable;
use Iterator;
use IteratorAggregate;
use JsonSerializable;
use function array_filter;
use function array_merge;
use function array_splice;
use function array_unshift;
use function array_values;
use function count;
use function reset;
use function sort;
use function sprintf;
use function uasort;
use function usort;
use const ARRAY_FILTER_USE_BOTH;

/**
 * A class to manipulate interval collection.
 *
 * @package League.period
 * @author  Ignace Nyamagana Butera <[email protected]>
 * @since   4.1.0
 */
final class Sequence implements ArrayAccess, Countable, IteratorAggregate, JsonSerializable
{
    /**
     * @var Period[]
     */
    private $intervals = [];

    /**
     * new instance.
     *
     * @param Period ...$intervals
     */
    public function __construct(Period ...$intervals)
    {
        $this->intervals = $intervals;
    }

    /**
     * Returns the sequence boundaries as a Period instance.
     *
     * If the sequence contains no interval null is returned.
     *
     * @return ?Period
     */
    public function boundaries(): ?Period
    {
        $period = reset($this->intervals);
        if (false === $period) {
            return null;
        }

        return $period->merge(...$this->intervals);
    }

    /**
     * Returns the gaps inside the instance.
     */
    public function gaps(): self
    {
        $sequence = new self();
        $interval = null;
        foreach ($this->sorted([$this, 'sortByStartDate']) as $period) {
            if (null === $interval) {
                $interval = $period;
                continue;
            }

            if (!$interval->overlaps($period) && !$interval->abuts($period)) {
                $sequence->push($interval->gap($period));
            }

            if (!$interval->contains($period)) {
                $interval = $period;
            }
        }

        return $sequence;
    }

    /**
     * Sorts two Interval instance using their start datepoint.
     */
    private function sortByStartDate(Period $interval1, Period $interval2): int
    {
        return $interval1->getStartDate() <=> $interval2->getStartDate();
    }

    /**
     * Returns the intersections inside the instance.
     */
    public function intersections(): self
    {
        $sequence = new self();
        $current = null;
        $isPreviouslyContained = false;
        foreach ($this->sorted([$this, 'sortByStartDate']) as $period) {
            if (null === $current) {
                $current = $period;
                continue;
            }

            $isContained = $current->contains($period);
            if ($isContained && $isPreviouslyContained) {
                continue;
            }

            if ($current->overlaps($period)) {
                $sequence->push($current->intersect($period));
            }

            $isPreviouslyContained = $isContained;
            if (!$isContained) {
                $current = $period;
            }
        }

        return $sequence;
    }

    /**
     * Returns the unions inside the instance.
     */
    public function unions(): self
    {
        $sequence = $this
            ->sorted([$this, 'sortByStartDate'])
            ->reduce([$this, 'calculateUnion'], new self())
        ;

        if ($sequence->intervals === $this->intervals) {
            return $this;
        }

        return $sequence;
    }

    /**
     * Iteratively calculate the union sequence.
     */
    private function calculateUnion(Sequence $sequence, Period $period): Sequence
    {
        if ($sequence->isEmpty()) {
            $sequence->push($period);

            return $sequence;
        }

        $index = $sequence->count() - 1;
        $interval = $sequence->get($index);
        if ($interval->overlaps($period) || $interval->abuts($period)) {
            $sequence->set($index, $interval->merge($period));

            return $sequence;
        }

        $sequence->push($period);

        return $sequence;
    }

    /**
     * Returns the sequence boundaries as a Period instance.
     *
     * DEPRECATION WARNING! This method will be removed in the next major point release
     *
     * @deprecated deprecated since version 4.4.0
     * @see        ::boundaries
     *
     * If the sequence contains no interval null is returned.
     *
     * @return ?Period
     */
    public function getBoundaries(): ?Period
    {
        return $this->boundaries();
    }

    /**
     * Returns the intersections inside the instance.
     *
     * DEPRECATION WARNING! This method will be removed in the next major point release
     *
     * @deprecated deprecated since version 4.4.0
     * @see        ::intersections
     */
    public function getIntersections(): self
    {
        return $this->intersections();
    }

    /**
     * Returns the gaps inside the instance.
     *
     * DEPRECATION WARNING! This method will be removed in the next major point release
     *
     * @deprecated deprecated since version 4.4.0
     * @see        ::gaps
     */
    public function getGaps(): self
    {
        return $this->gaps();
    }

    /**
     * Returns the sum of all instances durations as expressed in seconds.
     */
    public function getTotalTimestampInterval(): float
    {
        $retval = 0;
        foreach ($this->intervals as $interval) {
            $retval += $interval->getTimestampInterval();
        }

        return $retval;
    }

    /**
     * Tells whether some intervals in the current instance satisfies the predicate.
     */
    public function some(callable $predicate): bool
    {
        foreach ($this->intervals as $offset => $interval) {
            if (true === $predicate($interval, $offset)) {
                return true;
            }
        }

        return false;
    }

    /**
     * Tells whether all intervals in the current instance satisfies the predicate.
     */
    public function every(callable $predicate): bool
    {
        foreach ($this->intervals as $offset => $interval) {
            if (true !== $predicate($interval, $offset)) {
                return false;
            }
        }

        return [] !== $this->intervals;
    }

    /**
     * Returns the array representation of the sequence.
     *
     * @return Period[]
     */
    public function toArray(): array
    {
        return $this->intervals;
    }

    /**
     * {@inheritdoc}
     */
    public function jsonSerialize(): array
    {
        return $this->intervals;
    }

    /**
     * {@inheritdoc}
     */
    public function getIterator(): Iterator
    {
        foreach ($this->intervals as $offset => $interval) {
            yield $offset => $interval;
        }
    }

    /**
     * {@inheritdoc}
     */
    public function count(): int
    {
        return count($this->intervals);
    }

    /**
     * @inheritdoc
     *
     * @param int $offset
     */
    public function offsetExists($offset): bool
    {
        return isset($this->intervals[$offset]);
    }

    /**
     * @inheritdoc
     *
     * @param int $offset
     */
    public function offsetGet($offset): Period
    {
        return $this->get($offset);
    }

    /**
     * @inheritdoc
     *
     * @param int $offset
     */
    public function offsetUnset($offset): void
    {
        $this->remove($offset);
    }

    /**
     * @inheritdoc
     *
     * @param mixed|int $offset
     * @param Period    $interval
     */
    public function offsetSet($offset, $interval): void
    {
        if (null !== $offset) {
            $this->set($offset, $interval);
            return;
        }

        $this->push($interval);
    }

    /**
     * Tells whether the sequence is empty.
     */
    public function isEmpty(): bool
    {
        return [] === $this->intervals;
    }

    /**
     * Tells whether the given interval is present in the sequence.
     *
     * @param Period ...$intervals
     */
    public function contains(Period $interval, Period ...$intervals): bool
    {
        $intervals[] = $interval;
        foreach ($intervals as $period) {
            if (false === $this->indexOf($period)) {
                return false;
            }
        }

        return true;
    }

    /**
     * Attempts to find the first offset attached to the submitted interval.
     *
     * If no offset is found the method returns boolean false.
     *
     * @return int|bool
     */
    public function indexOf(Period $interval)
    {
        foreach ($this->intervals as $offset => $period) {
            if ($period->equals($interval)) {
                return $offset;
            }
        }

        return false;
    }

    /**
     * Returns the interval specified at a given offset.
     *
     * @throws InvalidIndex If the offset is illegal for the current sequence
     */
    public function get(int $offset): Period
    {
        $period = $this->intervals[$offset] ?? null;
        if (null !== $period) {
            return $period;
        }

        throw new InvalidIndex(sprintf('%s is an invalid offset in the current sequence', $offset));
    }

    /**
     * Sort the current instance according to the given comparison callable
     * and maintain index association.
     *
     * Returns true on success or false on failure
     */
    public function sort(callable $compare): bool
    {
        return uasort($this->intervals, $compare);
    }

    /**
     * Adds new intervals at the front of the sequence.
     *
     * The sequence is re-indexed after addition
     *
     * @param Period ...$intervals
     */
    public function unshift(Period $interval, Period ...$intervals): void
    {
        $this->intervals = array_merge([$interval], $intervals, $this->intervals);
    }

    /**
     * Adds new intervals at the end of the sequence.
     *
     * @param Period ...$intervals
     */
    public function push(Period $interval, Period ...$intervals): void
    {
        $this->intervals = array_merge($this->intervals, [$interval], $intervals);
    }

    /**
     * Inserts new intervals at the specified offset of the sequence.
     *
     * The sequence is re-indexed after addition
     *
     * @param Period ...$intervals
     *
     * @throws InvalidIndex If the offset is illegal for the current sequence.
     */
    public function insert(int $offset, Period $interval, Period ...$intervals): void
    {
        if ($offset < 0 || $offset > count($this->intervals)) {
            throw new InvalidIndex(sprintf('%s is an invalid offset in the current sequence', $offset));
        }

        array_unshift($intervals, $interval);
        array_splice($this->intervals, $offset, 0, $intervals);
    }

    /**
     * Updates the interval at the specify offset.
     *
     * @throws InvalidIndex If the offset is illegal for the current sequence.
     */
    public function set(int $offset, Period $interval): void
    {
        $this->get($offset);
        $this->intervals[$offset] = $interval;
    }

    /**
     * Removes an interval from the sequence at the given offset and returns it.
     *
     * The sequence is re-indexed after removal
     *
     * @throws InvalidIndex If the offset is illegal for the current sequence.
     */
    public function remove(int $offset): Period
    {
        $interval = $this->get($offset);
        unset($this->intervals[$offset]);

        $this->intervals = array_values($this->intervals);

        return $interval;
    }

    /**
     * Filters the sequence according to the given predicate.
     *
     * This method MUST retain the state of the current instance, and return
     * an instance that contains the interval which validate the predicate.
     */
    public function filter(callable $predicate): self
    {
        $intervals = array_filter($this->intervals, $predicate, ARRAY_FILTER_USE_BOTH);
        if ($intervals === $this->intervals) {
            return $this;
        }

        return new self(...$intervals);
    }

    /**
     * Removes all intervals from the sequence.
     */
    public function clear(): void
    {
        $this->intervals = [];
    }

    /**
     * Returns an instance sorted according to the given comparison callable
     * but does not maintain index association.
     *
     * This method MUST retain the state of the current instance, and return
     * an instance that contains the sorted intervals. The key are re-indexed
     */
    public function sorted(callable $compare): self
    {
        $intervals = $this->intervals;
        usort($intervals, $compare);
        if ($intervals === $this->intervals) {
            return $this;
        }

        return new self(...$intervals);
    }

    /**
     * Returns an instance where the given function is applied to each element in
     * the collection. The callable MUST return a Period object and takes a Period
     * and its associated key as argument.
     *
     * This method MUST retain the state of the current instance, and return
     * an instance that contains the returned intervals.
     */
    public function map(callable $func): self
    {
        $intervals = [];
        foreach ($this->intervals as $offset => $interval) {
            $intervals[$offset] = $func($interval, $offset);
        }

        if ($intervals === $this->intervals) {
            return $this;
        }

        $mapped = new self();
        $mapped->intervals = $intervals;

        return $mapped;
    }

    /**
     * Iteratively reduces the sequence to a single value using a callback.
     *
     * @param callable $func Accepts the carry, the current value and the current offset, and
     *                       returns an updated carry value.
     *
     * @param mixed|null $carry Optional initial carry value.
     *
     * @return mixed The carry value of the final iteration, or the initial
     *               value if the sequence was empty.
     */
    public function reduce(callable $func, $carry = null)
    {
        foreach ($this->intervals as $offset => $interval) {
            $carry = $func($carry, $interval, $offset);
        }

        return $carry;
    }
}


1		<?php
2
3		/**
4		* League.Period (https://period.thephpleague.com)
5		*
6		* (c) Ignace Nyamagana Butera <[email protected]>
7		*
8		* For the full copyright and license information, please view the LICENSE
9		* file that was distributed with this source code.
10		*/
11
12		declare(strict_types=1);
13
14		namespace League\Period;
15
16		use ArrayAccess;
17		use Countable;
18		use Iterator;
19		use IteratorAggregate;
20		use JsonSerializable;
21		use function array_filter;
22		use function array_merge;
23		use function array_splice;
24		use function array_unshift;
25		use function array_values;
26		use function count;
27		use function reset;
28		use function sort;
29		use function sprintf;
30		use function uasort;
31		use function usort;
32		use const ARRAY_FILTER_USE_BOTH;
33
34		/**
35		* A class to manipulate interval collection.
36		*
37		* @package League.period
38		* @author Ignace Nyamagana Butera <[email protected]>
39		* @since 4.1.0
40		*/
41		final class Sequence implements ArrayAccess, Countable, IteratorAggregate, JsonSerializable
42		{
43		/**
44		* @var Period[]
45		*/
46		private $intervals = [];
47
48		/**
49		* new instance.
50		*
51		* @param Period ...$intervals
52		*/
53	90	public function __construct(Period ...$intervals)
54		{
55	90	$this->intervals = $intervals;
56	90	}
57
58		/**
59		* Returns the sequence boundaries as a Period instance.
60		*
61		* If the sequence contains no interval null is returned.
62		*
63		* @return ?Period
64		*/
65	15	public function boundaries(): ?Period
66		{
67	15	$period = reset($this->intervals);
68	15	if (false === $period) {
69	6	return null;
70		}
71
72	15	return $period->merge(...$this->intervals);
73		}
74
75		/**
76		* Returns the gaps inside the instance.
77		*/
78	9	public function gaps(): self
79		{
80	9	$sequence = new self();
81	9	$interval = null;
82	9	foreach ($this->sorted([$this, 'sortByStartDate']) as $period) {
83	9	if (null === $interval) {
84	9	$interval = $period;
85	9	continue;
86		}
87
88	9	if (!$interval->overlaps($period) && !$interval->abuts($period)) {
89	6	$sequence->push($interval->gap($period));
90		}
91
92	9	if (!$interval->contains($period)) {
93	7	$interval = $period;
94		}
95		}
96
97	9	return $sequence;
98		}
99
100		/**
101		* Sorts two Interval instance using their start datepoint.
102		*/
103	15	private function sortByStartDate(Period $interval1, Period $interval2): int
104		{
105	15	return $interval1->getStartDate() <=> $interval2->getStartDate();
106		}
107
108		/**
109		* Returns the intersections inside the instance.
110		*/
111	9	public function intersections(): self
112		{
113	9	$sequence = new self();
114	9	$current = null;
115	9	$isPreviouslyContained = false;
116	9	foreach ($this->sorted([$this, 'sortByStartDate']) as $period) {
117	9	if (null === $current) {
118	9	$current = $period;
119	9	continue;
120		}
121
122	9	$isContained = $current->contains($period);
123	9	if ($isContained && $isPreviouslyContained) {
124	3	continue;
125		}
126
127	9	if ($current->overlaps($period)) {
128	6	$sequence->push($current->intersect($period));
129		}
130
131	9	$isPreviouslyContained = $isContained;
132	9	if (!$isContained) {
133	7	$current = $period;
134		}
135		}
136
137	9	return $sequence;
138		}
139
140		/**
141		* Returns the unions inside the instance.
142		*/
143	6	public function unions(): self
144		{
145		$sequence = $this
146	6	->sorted([$this, 'sortByStartDate'])
147	6	->reduce([$this, 'calculateUnion'], new self())
148		;
149
150	6	if ($sequence->intervals === $this->intervals) {
151	3	return $this;
152		}
153
154	3	return $sequence;
155		}
156
157		/**
158		* Iteratively calculate the union sequence.
159		*/
160	6	private function calculateUnion(Sequence $sequence, Period $period): Sequence
161		{
162	6	if ($sequence->isEmpty()) {
163	6	$sequence->push($period);
164
165	6	return $sequence;
166		}
167
168	3	$index = $sequence->count() - 1;
169	3	$interval = $sequence->get($index);
170	3	if ($interval->overlaps($period) \|\| $interval->abuts($period)) {
171	3	$sequence->set($index, $interval->merge($period));
172
173	3	return $sequence;
174		}
175
176	3	$sequence->push($period);
177
178	3	return $sequence;
179		}
180
181		/**
182		* Returns the sequence boundaries as a Period instance.
183		*
184		* DEPRECATION WARNING! This method will be removed in the next major point release
185		*
186		* @deprecated deprecated since version 4.4.0
187		* @see ::boundaries
188		*
189		* If the sequence contains no interval null is returned.
190		*
191		* @return ?Period
192		*/
193	12	public function getBoundaries(): ?Period
194		{
195	12	return $this->boundaries();
196		}
197
198		/**
199		* Returns the intersections inside the instance.
200		*
201		* DEPRECATION WARNING! This method will be removed in the next major point release
202		*
203		* @deprecated deprecated since version 4.4.0
204		* @see ::intersections
205		*/
206	9	public function getIntersections(): self
207		{
208	9	return $this->intersections();
209		}
210
211		/**
212		* Returns the gaps inside the instance.
213		*
214		* DEPRECATION WARNING! This method will be removed in the next major point release
215		*
216		* @deprecated deprecated since version 4.4.0
217		* @see ::gaps
218		*/
219	9	public function getGaps(): self
220		{
221	9	return $this->gaps();
222		}
223
224		/**
225		* Returns the sum of all instances durations as expressed in seconds.
226		*/
227	3	public function getTotalTimestampInterval(): float
228		{
229	3	$retval = 0;
230	3	foreach ($this->intervals as $interval) {
231	3	$retval += $interval->getTimestampInterval();
232		}
233
234	3	return $retval;
235		}
236
237		/**
238		* Tells whether some intervals in the current instance satisfies the predicate.
239		*/
240	3	public function some(callable $predicate): bool
241		{
242	3	foreach ($this->intervals as $offset => $interval) {
243	3	if (true === $predicate($interval, $offset)) {
244	3	return true;
245		}
246		}
247
248	3	return false;
249		}
250
251		/**
252		* Tells whether all intervals in the current instance satisfies the predicate.
253		*/
254	3	public function every(callable $predicate): bool
255		{
256	3	foreach ($this->intervals as $offset => $interval) {
257	3	if (true !== $predicate($interval, $offset)) {
258	3	return false;
259		}
260		}
261
262	3	return [] !== $this->intervals;
263		}
264
265		/**
266		* Returns the array representation of the sequence.
267		*
268		* @return Period[]
269		*/
270	6	public function toArray(): array
271		{
272	6	return $this->intervals;
273		}
274
275		/**
276		* {@inheritdoc}
277		*/
278	3	public function jsonSerialize(): array
279		{
280	3	return $this->intervals;
281		}
282
283		/**
284		* {@inheritdoc}
285		*/
286	18	public function getIterator(): Iterator
287		{
288	18	foreach ($this->intervals as $offset => $interval) {
289	18	yield $offset => $interval;
290		}
291	18	}
292
293		/**
294		* {@inheritdoc}
295		*/
296	30	public function count(): int
297		{
298	30	return count($this->intervals);
299		}
300
301		/**
302		* @inheritdoc
303		*
304		* @param int $offset
305		*/
306	3	public function offsetExists($offset): bool
307		{
308	3	return isset($this->intervals[$offset]);
309		}
310
311		/**
312		* @inheritdoc
313		*
314		* @param int $offset
315		*/
316	3	public function offsetGet($offset): Period
317		{
318	3	return $this->get($offset);
319		}
320
321		/**
322		* @inheritdoc
323		*
324		* @param int $offset
325		*/
326	6	public function offsetUnset($offset): void
327		{
328	6	$this->remove($offset);
329	3	}
330
331		/**
332		* @inheritdoc
333		*
334		* @param mixed\|int $offset
335		* @param Period $interval
336		*/
337	9	public function offsetSet($offset, $interval): void
338		{
339	9	if (null !== $offset) {
340	9	$this->set($offset, $interval);
341	3	return;
342		}
343
344	3	$this->push($interval);
345	3	}
346
347		/**
348		* Tells whether the sequence is empty.
349		*/
350	15	public function isEmpty(): bool
351		{
352	15	return [] === $this->intervals;
353		}
354
355		/**
356		* Tells whether the given interval is present in the sequence.
357		*
358		* @param Period ...$intervals
359		*/
360	6	public function contains(Period $interval, Period ...$intervals): bool
361		{
362	6	$intervals[] = $interval;
363	6	foreach ($intervals as $period) {
364	6	if (false === $this->indexOf($period)) {
365	4	return false;
366		}
367		}
368
369	6	return true;
370		}
371
372		/**
373		* Attempts to find the first offset attached to the submitted interval.
374		*
375		* If no offset is found the method returns boolean false.
376		*
377		* @return int\|bool
378		*/
379	6	public function indexOf(Period $interval)
380		{
381	6	foreach ($this->intervals as $offset => $period) {
382	6	if ($period->equals($interval)) {
383	6	return $offset;
384		}
385		}
386
387	6	return false;
388		}
389
390		/**
391		* Returns the interval specified at a given offset.
392		*
393		* @throws InvalidIndex If the offset is illegal for the current sequence
394		*/
395	39	public function get(int $offset): Period
396		{
397	39	$period = $this->intervals[$offset] ?? null;
398	39	if (null !== $period) {
399	30	return $period;
400		}
401
402	15	throw new InvalidIndex(sprintf('%s is an invalid offset in the current sequence', $offset));
403		}
404
405		/**
406		* Sort the current instance according to the given comparison callable
407		* and maintain index association.
408		*
409		* Returns true on success or false on failure
410		*/
411	6	public function sort(callable $compare): bool
412		{
413	6	return uasort($this->intervals, $compare);
414		}
415
416		/**
417		* Adds new intervals at the front of the sequence.
418		*
419		* The sequence is re-indexed after addition
420		*
421		* @param Period ...$intervals
422		*/
423	3	public function unshift(Period $interval, Period ...$intervals): void
424		{
425	3	$this->intervals = array_merge([$interval], $intervals, $this->intervals);
426	3	}
427
428		/**
429		* Adds new intervals at the end of the sequence.
430		*
431		* @param Period ...$intervals
432		*/
433	24	public function push(Period $interval, Period ...$intervals): void
434		{
435	24	$this->intervals = array_merge($this->intervals, [$interval], $intervals);
436	24	}
437
438		/**
439		* Inserts new intervals at the specified offset of the sequence.
440		*
441		* The sequence is re-indexed after addition
442		*
443		* @param Period ...$intervals
444		*
445		* @throws InvalidIndex If the offset is illegal for the current sequence.
446		*/
447	3	public function insert(int $offset, Period $interval, Period ...$intervals): void
448		{
449	3	if ($offset < 0 \|\| $offset > count($this->intervals)) {
450	3	throw new InvalidIndex(sprintf('%s is an invalid offset in the current sequence', $offset));
451		}
452
453	3	array_unshift($intervals, $interval);
454	3	array_splice($this->intervals, $offset, 0, $intervals);
455	3	}
456
457		/**
458		* Updates the interval at the specify offset.
459		*
460		* @throws InvalidIndex If the offset is illegal for the current sequence.
461		*/
462	12	public function set(int $offset, Period $interval): void
463		{
464	12	$this->get($offset);
465	9	$this->intervals[$offset] = $interval;
466	9	}
467
468		/**
469		* Removes an interval from the sequence at the given offset and returns it.
470		*
471		* The sequence is re-indexed after removal
472		*
473		* @throws InvalidIndex If the offset is illegal for the current sequence.
474		*/
475	9	public function remove(int $offset): Period
476		{
477	9	$interval = $this->get($offset);
478	6	unset($this->intervals[$offset]);
479
480	6	$this->intervals = array_values($this->intervals);
481
482	6	return $interval;
483		}
484
485		/**
486		* Filters the sequence according to the given predicate.
487		*
488		* This method MUST retain the state of the current instance, and return
489		* an instance that contains the interval which validate the predicate.
490		*/
491	6	public function filter(callable $predicate): self
492		{
493	6	$intervals = array_filter($this->intervals, $predicate, ARRAY_FILTER_USE_BOTH);
494	6	if ($intervals === $this->intervals) {
495	3	return $this;
496		}
497
498	3	return new self(...$intervals);
499		}
500
501		/**
502		* Removes all intervals from the sequence.
503		*/
504	3	public function clear(): void
505		{
506	3	$this->intervals = [];
507	3	}
508
509		/**
510		* Returns an instance sorted according to the given comparison callable
511		* but does not maintain index association.
512		*
513		* This method MUST retain the state of the current instance, and return
514		* an instance that contains the sorted intervals. The key are re-indexed
515		*/
516	24	public function sorted(callable $compare): self
517		{
518	24	$intervals = $this->intervals;
519	24	usort($intervals, $compare);
520	24	if ($intervals === $this->intervals) {
521	12	return $this;
522		}
523
524	15	return new self(...$intervals);
525		}
526
527		/**
528		* Returns an instance where the given function is applied to each element in
529		* the collection. The callable MUST return a Period object and takes a Period
530		* and its associated key as argument.
531		*
532		* This method MUST retain the state of the current instance, and return
533		* an instance that contains the returned intervals.
534		*/
535	9	public function map(callable $func): self
536		{
537	9	$intervals = [];
538	9	foreach ($this->intervals as $offset => $interval) {
539	9	$intervals[$offset] = $func($interval, $offset);
540		}
541
542	9	if ($intervals === $this->intervals) {
543	3	return $this;
544		}
545
546	6	$mapped = new self();
547	6	$mapped->intervals = $intervals;
548
549	6	return $mapped;
550		}
551
552		/**
553		* Iteratively reduces the sequence to a single value using a callback.
554		*
555		* @param callable $func Accepts the carry, the current value and the current offset, and
556		* returns an updated carry value.
557		*
558		* @param mixed\|null $carry Optional initial carry value.
559		*
560		* @return mixed The carry value of the final iteration, or the initial
561		* value if the sequence was empty.
562		*/
563	6	public function reduce(callable $func, $carry = null)
564		{
565	6	foreach ($this->intervals as $offset => $interval) {
566	6	$carry = $func($carry, $interval, $offset);
567		}
568
569	6	return $carry;
570		}
571		}
572

thephpleague / period

Push — master ( 13c894...975657 )

Sequence::intersections() B

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