Set::__clone() - Code Metrics - Inspection of "Merge pull request #48 from silencedis/fix-cloning" - php-ds/polyfill - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 72301e...841a4b )

by Rudi

created 2019-05-16 10:32 UTC

Set::__clone() A

↳ Parent: Set

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	4
ccs	0
cts	4
cp	0
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	0
crap	2

<?php
namespace Ds;

use Error;
use OutOfBoundsException;
use OutOfRangeException;

/**
 * A sequence of unique values.
 *
 * @package Ds
 */
final class Set implements \IteratorAggregate, \ArrayAccess, Collection
{
    use Traits\GenericCollection;

    const MIN_CAPACITY = Map::MIN_CAPACITY;

    /**
     * @var Map internal map to store the values.
     */
    private $table;

    /**
     * Creates a new set using the values of an array or Traversable object.
     * The keys of either will not be preserved.
     *
     * @param array|\Traversable|null $values
     */
    public function __construct($values = null)
    {
        $this->table = new Map();

        if (func_num_args()) {
            $this->add(...$values);
        }
    }

    /**
     * Adds zero or more values to the set.
     *
     * @param mixed ...$values
     */

    public function add(...$values)
    {
        foreach ($values as $value) {
            $this->table->put($value, null);
        }
    }

    /**
     * Ensures that enough memory is allocated for a specified capacity. This
     * potentially reduces the number of reallocations as the size increases.
     *
     * @param int $capacity The number of values for which capacity should be
     *                      allocated. Capacity will stay the same if this value
     *                      is less than or equal to the current capacity.
     */
    public function allocate(int $capacity)
    {
        $this->table->allocate($capacity);
    }

    /**
     * Returns the current capacity of the set.
     *
     * @return int
     */
    public function capacity(): int
    {
        return $this->table->capacity();
    }

    /**
     * Clear all elements in the Set
     */
    public function clear()
    {
        $this->table->clear();
    }

    /**
     * Determines whether the set contains all of zero or more values.
     *
     * @param mixed ...$values
     *
     * @return bool true if at least one value was provided and the set
     *              contains all given values, false otherwise.
     */

    public function contains(...$values): bool
    {
        foreach ($values as $value) {
            if ( ! $this->table->hasKey($value)) {
                return false;
            }
        }

        return true;
    }

    /**
     * @inheritDoc
     */
    public function copy(): \Ds\Collection
    {
        return new self($this);
    }

    /**
     * Returns the number of elements in the Stack
     *
     * @return int
     */
    public function count(): int
    {
        return count($this->table);
    }

    /**
     * Creates a new set using values from this set that aren't in another set.
     *
     * Formally: A \ B = {x ∈ A | x ∉ B}
     *
     * @param Set $set
     *
     * @return Set
     */
    public function diff(Set $set): Set
    {
        return $this->table->diff($set->table)->keys();
    }

    /**
     * Creates a new set using values in either this set or in another set,
     * but not in both.
     *
     * Formally: A ⊖ B = {x : x ∈ (A \ B) ∪ (B \ A)}
     *
     * @param Set $set
     *
     * @return Set
     */
    public function xor(Set $set): Set
    {
        return $this->table->xor($set->table)->keys();
    }

    /**
     * Returns a new set containing only the values for which a callback
     * returns true. A boolean test will be used if a callback is not provided.
     *
     * @param callable|null $callback Accepts a value, returns a boolean:
     *                                 true : include the value,
     *                                 false: skip the value.
     *
     * @return Set
     */
    public function filter(callable $callback = null): Set
    {
        return new self(array_filter($this->toArray(), $callback ?: 'boolval'));
    }

    /**
     * Returns the first value in the set.
     *
     * @return mixed the first value in the set.
     */
    public function first()
    {
        return $this->table->first()->key;
    }

    /**
     * Returns the value at a specified position in the set.
     *
     * @param int $position
     *
     * @return mixed|null
     *
     * @throws OutOfRangeException
     */
    public function get(int $position)
    {
        return $this->table->skip($position)->key;
    }

    /**
     * Creates a new set using values common to both this set and another set.
     *
     * In other words, returns a copy of this set with all values removed that
     * aren't in the other set.
     *
     * Formally: A ∩ B = {x : x ∈ A ∧ x ∈ B}
     *
     * @param Set $set
     *
     * @return Set
     */
    public function intersect(Set $set): Set
    {
        return $this->table->intersect($set->table)->keys();
    }

    /**
     * @inheritDoc
     */
    public function isEmpty(): bool
    {
        return $this->table->isEmpty();
    }

    /**
     * Joins all values of the set into a string, adding an optional 'glue'
     * between them. Returns an empty string if the set is empty.
     *
     * @param string $glue

     *
     * @return string
     */
    public function join(string $glue = null): string
    {
        return implode($glue, $this->toArray());
    }

    /**
     * Returns the last value in the set.
     *
     * @return mixed the last value in the set.
     */
    public function last()
    {
        return $this->table->last()->key;
    }

    /**
     * Iteratively reduces the set to a single value using a callback.
     *
     * @param callable $callback Accepts the carry and current value, and
     *                           returns an updated carry value.
     *
     * @param mixed|null $initial Optional initial carry value.
     *
     * @return mixed The carry value of the final iteration, or the initial
     *               value if the set was empty.
     */
    public function reduce(callable $callback, $initial = null)
    {
        $carry = $initial;

        foreach ($this as $value) {
            $carry = $callback($carry, $value);
        }

        return $carry;
    }

    /**
     * Removes zero or more values from the set.
     *
     * @param mixed ...$values
     */

    public function remove(...$values)
    {
        foreach ($values as $value) {
            $this->table->remove($value, null);
        }
    }

    /**
     * Reverses the set in-place.
     */
    public function reverse()
    {
        $this->table->reverse();
    }

    /**
     * Returns a reversed copy of the set.
     *
     * @return Set
     */
    public function reversed(): Set
    {
        $reversed = $this->copy();
        $reversed->table->reverse();
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

        return $reversed;
    }

    /**
     * Returns a subset of a given length starting at a specified offset.
     *
     * @param int $offset If the offset is non-negative, the set will start
     *                    at that offset in the set. If offset is negative,
     *                    the set will start that far from the end.
     *
     * @param int $length If a length is given and is positive, the resulting

     *                    set will have up to that many values in it.
     *                    If the requested length results in an overflow, only
     *                    values up to the end of the set will be included.
     *
     *                    If a length is given and is negative, the set
     *                    will stop that many values from the end.
     *
     *                    If a length is not provided, the resulting set
     *                    will contains all values between the offset and the
     *                    end of the set.
     *
     * @return Set
     */
    public function slice(int $offset, int $length = null): Set
    {
        $sliced = new self();
        $sliced->table = $this->table->slice($offset, $length);

        return $sliced;
    }

    /**
     * Sorts the set in-place, based on an optional callable comparator.
     *
     * @param callable|null $comparator Accepts two values to be compared.
     *                                  Should return the result of a <=> b.
     */
    public function sort(callable $comparator = null)
    {
        $this->table->ksort($comparator);
    }

    /**
     * Returns a sorted copy of the set, based on an optional callable
     * comparator. Natural ordering will be used if a comparator is not given.
     *
     * @param callable|null $comparator Accepts two values to be compared.
     *                                  Should return the result of a <=> b.
     *
     * @return Set
     */
    public function sorted(callable $comparator = null): Set
    {
        $sorted = $this->copy();
        $sorted->table->ksort($comparator);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}

        return $sorted;
    }

    /**
     * Returns the result of adding all given values to the set.
     *
     * @param array|\Traversable $values
     *
     * @return \Ds\Set
     */
    public function merge($values): Set
    {
        $merged = $this->copy();

        foreach ($values as $value) {
            $merged->add($value);
        }

        return $merged;
    }

    /**
     * @inheritDoc
     */
    public function toArray(): array
    {
        return iterator_to_array($this);
    }

    /**
     * Returns the sum of all values in the set.
     *
     * @return int|float The sum of all the values in the set.
     */
    public function sum()
    {
        return array_sum($this->toArray());
    }

    /**
     * Creates a new set that contains the values of this set as well as the
     * values of another set.
     *
     * Formally: A ∪ B = {x: x ∈ A ∨ x ∈ B}
     *
     * @param Set $set
     *
     * @return Set
     */
    public function union(Set $set): Set
    {
        $union = new self();

        foreach ($this as $value) {
            $union->add($value);
        }

        foreach ($set as $value) {
            $union->add($value);
        }

        return $union;
    }

    /**
     * Get iterator
     */
    public function getIterator()
    {
        foreach ($this->table as $key => $value) {
            yield $key;
        }
    }

    /**
     * @inheritdoc
     *
     * @throws OutOfBoundsException
     */
    public function offsetSet($offset, $value)
    {
        if ($offset === null) {
            $this->add($value);
            return;
        }

        throw new OutOfBoundsException();
    }

    /**
     * @inheritdoc
     */
    public function offsetGet($offset)
    {
        return $this->table->skip($offset)->key;
    }

    /**
     * @inheritdoc
     *
     * @throws Error
     */
    public function offsetExists($offset)
    {
        throw new Error();
    }

    /**
     * @inheritdoc
     *
     * @throws Error
     */
    public function offsetUnset($offset)
    {
        throw new Error();
    }

    /**
     * Ensures that the internal table will be cloned too.
     */
    public function __clone()
    {
        $this->table = clone $this->table;
    }
}


Push — master ( 72301e...841a4b )

Set::__clone() A

Complexity

Size

Duplication

Code Coverage

Importance

Available Fixes

Available Fixes

1			<?php
2			namespace Ds;
3
4			use Error;
5			use OutOfBoundsException;
6			use OutOfRangeException;
7
8			/**
9			* A sequence of unique values.
10			*
11			* @package Ds
12			*/
13			final class Set implements \IteratorAggregate, \ArrayAccess, Collection
14			{
15			use Traits\GenericCollection;
16
17			const MIN_CAPACITY = Map::MIN_CAPACITY;
18
19			/**
20			* @var Map internal map to store the values.
21			*/
22			private $table;
23
24			/**
25			* Creates a new set using the values of an array or Traversable object.
26			* The keys of either will not be preserved.
27			*
28			* @param array\|\Traversable\|null $values
29			*/
30			public function __construct($values = null)
31			{
32			$this->table = new Map();
33
34			if (func_num_args()) {
35			$this->add(...$values);
36			}
37			}
38
39			/**
40			* Adds zero or more values to the set.
41			*
42			* @param mixed ...$values
43			*/
			0 ignored issues – show Documentation introduced 2016-08-09 10:36 UTC by Report Bug Copy Issue Report Consider making the type for parameter `$values` a bit more specific; maybe use `array`. Loading history...
44			public function add(...$values)
45			{
46			foreach ($values as $value) {
47			$this->table->put($value, null);
48			}
49			}
50
51			/**
52			* Ensures that enough memory is allocated for a specified capacity. This
53			* potentially reduces the number of reallocations as the size increases.
54			*
55			* @param int $capacity The number of values for which capacity should be
56			* allocated. Capacity will stay the same if this value
57			* is less than or equal to the current capacity.
58			*/
59			public function allocate(int $capacity)
60			{
61			$this->table->allocate($capacity);
62			}
63
64			/**
65			* Returns the current capacity of the set.
66			*
67			* @return int
68			*/
69			public function capacity(): int
70			{
71			return $this->table->capacity();
72			}
73
74			/**
75			* Clear all elements in the Set
76			*/
77			public function clear()
78			{
79			$this->table->clear();
80			}
81
82			/**
83			* Determines whether the set contains all of zero or more values.
84			*
85			* @param mixed ...$values
86			*
87			* @return bool true if at least one value was provided and the set
88			* contains all given values, false otherwise.
89			*/
			0 ignored issues – show Documentation introduced 2016-08-09 10:36 UTC by Report Bug Copy Issue Report Consider making the type for parameter `$values` a bit more specific; maybe use `array`. Loading history...
90			public function contains(...$values): bool
91			{
92			foreach ($values as $value) {
93			if ( ! $this->table->hasKey($value)) {
94			return false;
95			}
96			}
97
98			return true;
99			}
100
101			/**
102			* @inheritDoc
103			*/
104			public function copy(): \Ds\Collection
105			{
106			return new self($this);
107			}
108
109			/**
110			* Returns the number of elements in the Stack
111			*
112			* @return int
113			*/
114			public function count(): int
115			{
116			return count($this->table);
117			}
118
119			/**
120			* Creates a new set using values from this set that aren't in another set.
121			*
122			* Formally: A \ B = {x ∈ A \| x ∉ B}
123			*
124			* @param Set $set
125			*
126			* @return Set
127			*/
128			public function diff(Set $set): Set
129			{
130			return $this->table->diff($set->table)->keys();
131			}
132
133			/**
134			* Creates a new set using values in either this set or in another set,
135			* but not in both.
136			*
137			* Formally: A ⊖ B = {x : x ∈ (A \ B) ∪ (B \ A)}
138			*
139			* @param Set $set
140			*
141			* @return Set
142			*/
143			public function xor(Set $set): Set
144			{
145			return $this->table->xor($set->table)->keys();
146			}
147
148			/**
149			* Returns a new set containing only the values for which a callback
150			* returns true. A boolean test will be used if a callback is not provided.
151			*
152			* @param callable\|null $callback Accepts a value, returns a boolean:
153			* true : include the value,
154			* false: skip the value.
155			*
156			* @return Set
157			*/
158			public function filter(callable $callback = null): Set
159			{
160			return new self(array_filter($this->toArray(), $callback ?: 'boolval'));
161			}
162
163			/**
164			* Returns the first value in the set.
165			*
166			* @return mixed the first value in the set.
167			*/
168			public function first()
169			{
170			return $this->table->first()->key;
171			}
172
173			/**
174			* Returns the value at a specified position in the set.
175			*
176			* @param int $position
177			*
178			* @return mixed\|null
179			*
180			* @throws OutOfRangeException
181			*/
182			public function get(int $position)
183			{
184			return $this->table->skip($position)->key;
185			}
186
187			/**
188			* Creates a new set using values common to both this set and another set.
189			*
190			* In other words, returns a copy of this set with all values removed that
191			* aren't in the other set.
192			*
193			* Formally: A ∩ B = {x : x ∈ A ∧ x ∈ B}
194			*
195			* @param Set $set
196			*
197			* @return Set
198			*/
199			public function intersect(Set $set): Set
200			{
201			return $this->table->intersect($set->table)->keys();
202			}
203
204			/**
205			* @inheritDoc
206			*/
207			public function isEmpty(): bool
208			{
209			return $this->table->isEmpty();
210			}
211
212			/**
213			* Joins all values of the set into a string, adding an optional 'glue'
214			* between them. Returns an empty string if the set is empty.
215			*
216			* @param string $glue
			0 ignored issues – show Documentation introduced 2016-03-01 03:50 UTC by Report Bug Copy Issue Report Should the type for parameter `$glue` not be `null\|string`? This check looks for `@param` annotations where the type inferred by our type inference engine differs from the declared type. It makes a suggestion as to what type it considers more descriptive. Most often this is a case of a parameter that can be null in addition to its declared types. Loading history...
217			*
218			* @return string
219			*/
220			public function join(string $glue = null): string
221			{
222			return implode($glue, $this->toArray());
223			}
224
225			/**
226			* Returns the last value in the set.
227			*
228			* @return mixed the last value in the set.
229			*/
230			public function last()
231			{
232			return $this->table->last()->key;
233			}
234
235			/**
236			* Iteratively reduces the set to a single value using a callback.
237			*
238			* @param callable $callback Accepts the carry and current value, and
239			* returns an updated carry value.
240			*
241			* @param mixed\|null $initial Optional initial carry value.
242			*
243			* @return mixed The carry value of the final iteration, or the initial
244			* value if the set was empty.
245			*/
246			public function reduce(callable $callback, $initial = null)
247			{
248			$carry = $initial;
249
250			foreach ($this as $value) {
251			$carry = $callback($carry, $value);
252			}
253
254			return $carry;
255			}
256
257			/**
258			* Removes zero or more values from the set.
259			*
260			* @param mixed ...$values
261			*/
			0 ignored issues – show Documentation introduced 2016-08-09 10:36 UTC by Report Bug Copy Issue Report Consider making the type for parameter `$values` a bit more specific; maybe use `array`. Loading history...
262			public function remove(...$values)
263			{
264			foreach ($values as $value) {
265			$this->table->remove($value, null);
266			}
267			}
268
269			/**
270			* Reverses the set in-place.
271			*/
272			public function reverse()
273			{
274			$this->table->reverse();
275			}
276
277			/**
278			* Returns a reversed copy of the set.
279			*
280			* @return Set
281			*/
282			public function reversed(): Set
283			{
284			$reversed = $this->copy();
285			$reversed->table->reverse();
			0 ignored issues – show Bug introduced 2016-07-25 03:16 UTC by Report Bug Copy Issue Report Accessing `table` on the interface `Ds\Collection` suggest that you code against a concrete implementation. How about adding an `instanceof` check? If you access a property on an interface, you most likely code against a concrete implementation of the interface. Available Fixes Adding an additional type check: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeInterface $object) { if ($object instanceof SomeClass) { $a = $object->a; } } Changing the type hint: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeClass $object) { $a = $object->a; } Loading history...
286
287			return $reversed;
288			}
289
290			/**
291			* Returns a subset of a given length starting at a specified offset.
292			*
293			* @param int $offset If the offset is non-negative, the set will start
294			* at that offset in the set. If offset is negative,
295			* the set will start that far from the end.
296			*
297			* @param int $length If a length is given and is positive, the resulting
			0 ignored issues – show Documentation introduced 2016-03-01 03:50 UTC by Report Bug Copy Issue Report Should the type for parameter `$length` not be `null\|integer`? This check looks for `@param` annotations where the type inferred by our type inference engine differs from the declared type. It makes a suggestion as to what type it considers more descriptive. Most often this is a case of a parameter that can be null in addition to its declared types. Loading history...
298			* set will have up to that many values in it.
299			* If the requested length results in an overflow, only
300			* values up to the end of the set will be included.
301			*
302			* If a length is given and is negative, the set
303			* will stop that many values from the end.
304			*
305			* If a length is not provided, the resulting set
306			* will contains all values between the offset and the
307			* end of the set.
308			*
309			* @return Set
310			*/
311			public function slice(int $offset, int $length = null): Set
312			{
313			$sliced = new self();
314			$sliced->table = $this->table->slice($offset, $length);
315
316			return $sliced;
317			}
318
319			/**
320			* Sorts the set in-place, based on an optional callable comparator.
321			*
322			* @param callable\|null $comparator Accepts two values to be compared.
323			* Should return the result of a <=> b.
324			*/
325			public function sort(callable $comparator = null)
326			{
327			$this->table->ksort($comparator);
328			}
329
330			/**
331			* Returns a sorted copy of the set, based on an optional callable
332			* comparator. Natural ordering will be used if a comparator is not given.
333			*
334			* @param callable\|null $comparator Accepts two values to be compared.
335			* Should return the result of a <=> b.
336			*
337			* @return Set
338			*/
339			public function sorted(callable $comparator = null): Set
340			{
341			$sorted = $this->copy();
342			$sorted->table->ksort($comparator);
			0 ignored issues – show Bug introduced 2016-07-25 03:16 UTC by Report Bug Copy Issue Report Accessing `table` on the interface `Ds\Collection` suggest that you code against a concrete implementation. How about adding an `instanceof` check? If you access a property on an interface, you most likely code against a concrete implementation of the interface. Available Fixes Adding an additional type check: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeInterface $object) { if ($object instanceof SomeClass) { $a = $object->a; } } Changing the type hint: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeClass $object) { $a = $object->a; } Loading history...
343
344			return $sorted;
345			}
346
347			/**
348			* Returns the result of adding all given values to the set.
349			*
350			* @param array\|\Traversable $values
351			*
352			* @return \Ds\Set
353			*/
354			public function merge($values): Set
355			{
356			$merged = $this->copy();
357
358			foreach ($values as $value) {
359			$merged->add($value);
360			}
361
362			return $merged;
363			}
364
365			/**
366			* @inheritDoc
367			*/
368			public function toArray(): array
369			{
370			return iterator_to_array($this);
371			}
372
373			/**
374			* Returns the sum of all values in the set.
375			*
376			* @return int\|float The sum of all the values in the set.
377			*/
378			public function sum()
379			{
380			return array_sum($this->toArray());
381			}
382
383			/**
384			* Creates a new set that contains the values of this set as well as the
385			* values of another set.
386			*
387			* Formally: A ∪ B = {x: x ∈ A ∨ x ∈ B}
388			*
389			* @param Set $set
390			*
391			* @return Set
392			*/
393			public function union(Set $set): Set
394			{
395			$union = new self();
396
397			foreach ($this as $value) {
398			$union->add($value);
399			}
400
401			foreach ($set as $value) {
402			$union->add($value);
403			}
404
405			return $union;
406			}
407
408			/**
409			* Get iterator
410			*/
411			public function getIterator()
412			{
413			foreach ($this->table as $key => $value) {
414			yield $key;
415			}
416			}
417
418			/**
419			* @inheritdoc
420			*
421			* @throws OutOfBoundsException
422			*/
423			public function offsetSet($offset, $value)
424			{
425			if ($offset === null) {
426			$this->add($value);
427			return;
428			}
429
430			throw new OutOfBoundsException();
431			}
432
433			/**
434			* @inheritdoc
435			*/
436			public function offsetGet($offset)
437			{
438			return $this->table->skip($offset)->key;
439			}
440
441			/**
442			* @inheritdoc
443			*
444			* @throws Error
445			*/
446			public function offsetExists($offset)
447			{
448			throw new Error();
449			}
450
451			/**
452			* @inheritdoc
453			*
454			* @throws Error
455			*/
456			public function offsetUnset($offset)
457			{
458			throw new Error();
459			}
460
461			/**
462			* Ensures that the internal table will be cloned too.
463			*/
464			public function __clone()
465			{
466			$this->table = clone $this->table;
467			}
468			}
469

php-ds / polyfill

Push — master ( 72301e...841a4b )

Set::__clone() A

Complexity

Size

Duplication

Code Coverage

Importance

Available Fixes

Available Fixes

Duplication Side-by-Side

Filter issues like