MapTrait::filter() - Code Metrics - Inspection of "Merge pull request #6 from seboettg/version-4" - seboettg/Collection - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Branch — master (fb2e38)

by Sebastian

created 2022-07-09 20:33 UTC

MapTrait::filter() B

↳ Parent: MapTrait

Complexity

Conditions	9
Paths	15

Size

Total Lines	30
Code Lines	20

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	18
CRAP Score	9

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	9
eloc	20
c	1
b	0
f	0
nc	15
nop	1
dl	0
loc	30
ccs	18
cts	18
cp	1
crap	9
rs	8.0555

<?php
declare(strict_types=1);
/*
 * Copyright (C) 2022 Sebastian Böttger <[email protected]>
 * You may use, distribute and modify this code under the
 * terms of the MIT license.
 *
 * You should have received a copy of the MIT license with
 * this file. If not, please visit: https://opensource.org/licenses/mit-license.php
 */

namespace Seboettg\Collection\Map;

use ReflectionException;
use ReflectionFunction;
use Seboettg\Collection\Assert\Exception\NotApplicableCallableException;
use Seboettg\Collection\Lists\ListInterface;
use Seboettg\Collection\NativePhp\ArrayAccessTrait;
use Seboettg\Collection\NativePhp\ArrayIteratorTrait;
use function Seboettg\Collection\Assert\assertScalar;
use function Seboettg\Collection\Assert\assertType;
use function Seboettg\Collection\Assert\assertValidCallable;
use function Seboettg\Collection\Lists\emptyList;
use function Seboettg\Collection\Lists\listOf;
use function Seboettg\Collection\Common\in_array;
use function Seboettg\Collection\Common\isComparable;
use function Seboettg\Collection\Common\isScalarOrStringable;

/**
 * @property array $array base array of this data structure
 */
trait MapTrait
{
    use ArrayAccessTrait, ArrayIteratorTrait;

    /**
     * @inheritDoc
     */
    public function getEntries(): ListInterface
    {
        return listOf(...array_map(function (string $key, $value) {
            return pair($key, $value);
        }, array_keys($this->array), $this->array));

    }


    /**
     * @inheritDoc
     */
    public function getKeys(): ListInterface
    {
        return listOf(...array_keys($this->array));
    }

    /**
     * @inheritDoc
     */
    public function values(): ListInterface
    {
        return listOf(...array_values($this->array));
    }

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

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

    /**
     * @inheritDoc
     */
    public function clear(): void
    {
        unset($this->array);
        $this->array = [];
    }

    /**
     * @inheritDoc
     * @param scalar $key
     * @return bool
     */
    public function contains($key): bool
    {
        assertScalar($key, "Key must be a scalar value");
        return array_key_exists($key, $this->array);
    }

    /**
     * @inheritDoc
     * @param array $array
     */
    public function setArray(array $array): void
    {
        $this->array = $array;
    }

    /**
     * @inheritDoc
     * @param scalar
     * @return string
     */
    public function containsKey($key): bool
    {
        return $this->contains($key);

    }

    /**
     * @inheritDoc
     * @param mixed $value
     * @return bool
     */
    public function containsValue($value): bool
    {
        if (
            isScalarOrStringable($value) /* && $this->all(fn ($_, $value): bool => is_scalar($value)) */ ||
            isComparable($value) /* && $this->all(fn ($_, $value): bool => isComparable($value)) */
        ) {
            // use custom in_array function
            return in_array($value, $this->array) !== false;
        } else {
            // use PHP's native \in_array function
            return \in_array(
                print_r($value, true),
                array_map(fn($item): string => print_r($item, true), $this->array)
            );
        }
    }

    /**
     * @inheritDoc
     * @return bool
     */
    public function isEmpty(): bool
    {
        return $this->count() === 0;
    }

    /**
     * @inheritDoc
     * @param scalar
     * @return mixed
     */
    public function get($key)
    {
        return $this->array[$key] ?? null;
    }

    /**
     * @inheritDoc
     * @param scalar $key
     * @param mixed $value
     */
    public function put($key, $value): void
    {
        assertScalar($key, "Key must be a scalar value");
        $this->array[$key] = $value;
    }

    /**
     * @param MapInterface<scalar, mixed> $map
     * @return void
     */
    public function putAll(MapInterface $map): void
    {
        foreach ($map as $key => $value) {
            $this->array[$key] = $value;
        }
    }

    /**
     * @inheritDoc
     * @param scalar $key
     * @return void
     */
    public function remove($key): void
    {
        unset($this->array[$key]);
    }

    /**
     * @inheritDoc
     * @param callable $predicate
     * @return bool
     */
    public function all(callable $predicate): bool
    {
        return $this->count() === $this->filter($predicate)->count();
    }

    /**
     * @inheritDoc
     * @param callable $predicate
     * @return bool
     */
    public function any(callable $predicate): bool
    {
        return $this->filter($predicate)->count() > 0;
    }

    /**
     * @inheritDoc
     * @param callable|null $predicate
     * @return MapInterface
     */
    public function filter(callable $predicate = null): MapInterface
    {
        $map = emptyMap();
        if ($predicate !== null) {
            try {
                $reflected = new ReflectionFunction($predicate);
                if (count($reflected->getParameters()) === 1) {
                    assertValidCallable($predicate, [Pair::class]);
                    foreach ($this->array as $key => $value) {
                        if ($predicate(pair($key, $value)) === true) {
                            $map->put($key, $value);
                        }
                    }
                } else {
                    if (count($reflected->getParameters()) === 2) {
                        assertValidCallable($predicate, ["scalar", "mixed"]);
                    }
                    foreach ($this->array as $key => $value) {
                        if ($predicate($key, $value) === true) {
                            $map->put($key, $value);
                        }
                    }
                }
            } catch (ReflectionException $ex) {
                throw new NotApplicableCallableException("Invalid callable passed.");
            }
        } else {
            $map->array = array_filter($this->array);

        }
        return $map;
    }

    /**
     * @inheritDoc
     * @param scalar $key
     * @param callable $default
     * @return mixed
     */
    public function getOrElse($key, callable $default)
    {
        return $this[$key] ?? $default($this);
    }

    /**
     * @inheritDoc
     * @param callable $transform
     * @return ListInterface
     */
    public function map(callable $transform): ListInterface
    {
        $list = emptyList();
        foreach ($this->array as $key => $value) {
            $list->add($transform(pair($key, $value)));
        }
        return $list;
    }

    /**
     * @inheritDoc
     * @param callable $transform
     * @return ListInterface
     */
    public function mapNotNull(callable $transform): ListInterface
    {
        return $this->map($transform)->filter(fn($item) => $item !== null);
    }

    /**
     * @inheritDoc
     * @param iterable<scalar> $keys
     * @param MapInterface
     */
    public function minus(iterable $keys): MapInterface
    {
        $newInstance = emptyMap();
        foreach ($this->array as $key => $value) {
            if (!$this->iterableContainsKey($key, $keys)) {
                $newInstance[$key] = $value;
            }
        }
        return $newInstance;
    }

    private function iterableContainsKey($key, iterable $keys): bool
    {
        foreach ($keys as $k) {
            if ($k === $key) {
                return true;
            }
        }
        return false;
    }

    /**
     * @inheritDoc
     * @param iterable<Pair<scalar, mixed>> $pairs
     * @return MapInterface<scalar, mixed>
     */
    public function plus(iterable $pairs): MapInterface
    {
        $map = emptyMap();
        $map->array = $this->array;

        if ($pairs instanceof MapInterface) {
            foreach ($pairs as $key => $value) {
                $map[$key] = $value;
            }
        } else {
            foreach ($pairs as $pair) {
                assertType($pair, Pair::class,
                    sprintf(
                        "Expected object of type %s, object of type %s given",
                        Pair::class,
                        gettype($pair) === "object" ? get_class($pair) : gettype($pair)
                    )
                );
                $map[$pair->getKey()] = $pair->getValue();
            }
        }
        return $map;
    }

    /**
     * @inheritDoc
     * @param callable $action f(entry: Pair<scalar, mixed>) -> mixed|void
     * @return void
     */
    public function forEach(callable $action): void
    {
        foreach ($this->array as $key => $value) {
            $action(pair($key, $value));
        }
    }

    /**
     * @inheritDoc
     * @return ListInterface<Pair<scalar, mixed>>
     */
    public function toList(): ListInterface
    {
        $list = emptyList();
        foreach ($this->array as $key => $value) {
            $list->add(pair($key, $value));
        }
        return $list;
    }

    public function toMap(): MapInterface
    {
        return mapOf(...$this->toList());
    }

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


1		<?php
2		declare(strict_types=1);
3		/*
4		* Copyright (C) 2022 Sebastian Böttger <[email protected]>
5		* You may use, distribute and modify this code under the
6		* terms of the MIT license.
7		*
8		* You should have received a copy of the MIT license with
9		* this file. If not, please visit: https://opensource.org/licenses/mit-license.php
10		*/
11
12		namespace Seboettg\Collection\Map;
13
14		use ReflectionException;
15		use ReflectionFunction;
16		use Seboettg\Collection\Assert\Exception\NotApplicableCallableException;
17		use Seboettg\Collection\Lists\ListInterface;
18		use Seboettg\Collection\NativePhp\ArrayAccessTrait;
19		use Seboettg\Collection\NativePhp\ArrayIteratorTrait;
20		use function Seboettg\Collection\Assert\assertScalar;
21		use function Seboettg\Collection\Assert\assertType;
22		use function Seboettg\Collection\Assert\assertValidCallable;
23		use function Seboettg\Collection\Lists\emptyList;
24		use function Seboettg\Collection\Lists\listOf;
25		use function Seboettg\Collection\Common\in_array;
26		use function Seboettg\Collection\Common\isComparable;
27		use function Seboettg\Collection\Common\isScalarOrStringable;
28
29		/**
30		* @property array $array base array of this data structure
31		*/
32		trait MapTrait
33		{
34		use ArrayAccessTrait, ArrayIteratorTrait;
35
36		/**
37		* @inheritDoc
38		*/
39	1	public function getEntries(): ListInterface
40		{
41		return listOf(...array_map(function (string $key, $value) {
42	1	return pair($key, $value);
43	1	}, array_keys($this->array), $this->array));
44
45		}
		0 ignored issues – show Coding Style introduced 2022-06-12 12:49 UTC by Report Bug Copy Issue Report Function closing brace must go on the next line following the body; found 1 blank lines before brace Loading history...
46
47		/**
48		* @inheritDoc
49		*/
50	3	public function getKeys(): ListInterface
51		{
52	3	return listOf(...array_keys($this->array));
53		}
54
55		/**
56		* @inheritDoc
57		*/
58	2	public function values(): ListInterface
59		{
60	2	return listOf(...array_values($this->array));
61		}
62
63		/**
64		* {@inheritDoc}
65		*/
66	19	public function count(): int
67		{
68	19	return count($this->array);
69		}
70
71		/**
72		* @inheritDoc
73		*/
74	1	public function size(): int
75		{
76	1	return $this->count();
77		}
78
79		/**
80		* @inheritDoc
81		*/
82	1	public function clear(): void
83		{
84	1	unset($this->array);
85	1	$this->array = [];
86	1	}
87
88		/**
89		* @inheritDoc
90		* @param scalar $key
91		* @return bool
92		*/
93	7	public function contains($key): bool
94		{
95	7	assertScalar($key, "Key must be a scalar value");
96	5	return array_key_exists($key, $this->array);
97		}
98
99		/**
100		* @inheritDoc
101		* @param array $array
102		*/
103	48	public function setArray(array $array): void
104		{
105	48	$this->array = $array;
106	48	}
107
108		/**
109		* @inheritDoc
110		* @param scalar
111		* @return string
112		*/
113	1	public function containsKey($key): bool
114		{
115	1	return $this->contains($key);
		0 ignored issues – show Bug Best Practice introduced 2022-06-12 12:49 UTC by Report Bug Copy Issue Report The expression `return $this->contains($key)` returns the type `boolean` which is incompatible with the documented return type `string`. Loading history...
116		}
117
118		/**
119		* @inheritDoc
120		* @param mixed $value
121		* @return bool
122		*/
123	4	public function containsValue($value): bool
124		{
125		if (
126	4	isScalarOrStringable($value) /* && $this->all(fn ($_, $value): bool => is_scalar($value)) */ \|\|
127		isComparable($value) /* && $this->all(fn ($_, $value): bool => isComparable($value)) */
128		) {
129		// use custom in_array function
130	3	return in_array($value, $this->array) !== false;
131		} else {
132		// use PHP's native \in_array function
133	1	return \in_array(
134	1	print_r($value, true),
135	1	array_map(fn($item): string => print_r($item, true), $this->array)
136		);
137		}
138		}
139
140		/**
141		* @inheritDoc
142		* @return bool
143		*/
144	2	public function isEmpty(): bool
145		{
146	2	return $this->count() === 0;
147		}
148
149		/**
150		* @inheritDoc
151		* @param scalar
152		* @return mixed
153		*/
154	6	public function get($key)
155		{
156	6	return $this->array[$key] ?? null;
157		}
158
159		/**
160		* @inheritDoc
161		* @param scalar $key
162		* @param mixed $value
163		*/
164	9	public function put($key, $value): void
165		{
166	9	assertScalar($key, "Key must be a scalar value");
167	8	$this->array[$key] = $value;
168	8	}
169
170		/**
171		* @param MapInterface<scalar, mixed> $map
172		* @return void
173		*/
174	1	public function putAll(MapInterface $map): void
175		{
176	1	foreach ($map as $key => $value) {
177	1	$this->array[$key] = $value;
178		}
179	1	}
180
181		/**
182		* @inheritDoc
183		* @param scalar $key
184		* @return void
185		*/
186	1	public function remove($key): void
187		{
188	1	unset($this->array[$key]);
189	1	}
190
191		/**
192		* @inheritDoc
193		* @param callable $predicate
194		* @return bool
195		*/
196	1	public function all(callable $predicate): bool
197		{
198	1	return $this->count() === $this->filter($predicate)->count();
199		}
200
201		/**
202		* @inheritDoc
203		* @param callable $predicate
204		* @return bool
205		*/
206	1	public function any(callable $predicate): bool
207		{
208	1	return $this->filter($predicate)->count() > 0;
209		}
210
211		/**
212		* @inheritDoc
213		* @param callable\|null $predicate
214		* @return MapInterface
215		*/
216	7	public function filter(callable $predicate = null): MapInterface
217		{
218	7	$map = emptyMap();
219	7	if ($predicate !== null) {
220		try {
221	6	$reflected = new ReflectionFunction($predicate);
222	6	if (count($reflected->getParameters()) === 1) {
223	3	assertValidCallable($predicate, [Pair::class]);
224	3	foreach ($this->array as $key => $value) {
225	3	if ($predicate(pair($key, $value)) === true) {
226	3	$map->put($key, $value);
227		}
228		}
229		} else {
230	3	if (count($reflected->getParameters()) === 2) {
231	3	assertValidCallable($predicate, ["scalar", "mixed"]);
232		}
233	5	foreach ($this->array as $key => $value) {
234	2	if ($predicate($key, $value) === true) {
235	2	$map->put($key, $value);
236		}
237		}
238		}
239	1	} catch (ReflectionException $ex) {
240	5	throw new NotApplicableCallableException("Invalid callable passed.");
241		}
242		} else {
243	1	$map->array = array_filter($this->array);
		0 ignored issues – show Bug introduced 2022-06-12 12:49 UTC by Report Bug Copy Issue Report The property `array` is declared private in `anonymous//src/Map/Functions.php$0` and cannot be accessed from this context. Loading history...
244		}
245	6	return $map;
246		}
247
248		/**
249		* @inheritDoc
250		* @param scalar $key
251		* @param callable $default
252		* @return mixed
253		*/
254	2	public function getOrElse($key, callable $default)
255		{
256	2	return $this[$key] ?? $default($this);
257		}
258
259		/**
260		* @inheritDoc
261		* @param callable $transform
262		* @return ListInterface
263		*/
264	2	public function map(callable $transform): ListInterface
265		{
266	2	$list = emptyList();
267	2	foreach ($this->array as $key => $value) {
268	2	$list->add($transform(pair($key, $value)));
269		}
270	2	return $list;
271		}
272
273		/**
274		* @inheritDoc
275		* @param callable $transform
276		* @return ListInterface
277		*/
278	1	public function mapNotNull(callable $transform): ListInterface
279		{
280	1	return $this->map($transform)->filter(fn($item) => $item !== null);
281		}
282
283		/**
284		* @inheritDoc
285		* @param iterable<scalar> $keys
286		* @param MapInterface
287		*/
288	2	public function minus(iterable $keys): MapInterface
289		{
290	2	$newInstance = emptyMap();
291	2	foreach ($this->array as $key => $value) {
292	2	if (!$this->iterableContainsKey($key, $keys)) {
293	2	$newInstance[$key] = $value;
294		}
295		}
296	2	return $newInstance;
297		}
298
299	2	private function iterableContainsKey($key, iterable $keys): bool
300		{
301	2	foreach ($keys as $k) {
302	2	if ($k === $key) {
303	2	return true;
304		}
305		}
306	2	return false;
307		}
308
309		/**
310		* @inheritDoc
311		* @param iterable<Pair<scalar, mixed>> $pairs
312		* @return MapInterface<scalar, mixed>
313		*/
314	2	public function plus(iterable $pairs): MapInterface
315		{
316	2	$map = emptyMap();
317	2	$map->array = $this->array;
		0 ignored issues – show Bug introduced 2022-06-12 12:49 UTC by Report Bug Copy Issue Report The property `array` is declared private in `anonymous//src/Map/Functions.php$0` and cannot be accessed from this context. Loading history...
318	2	if ($pairs instanceof MapInterface) {
319	1	foreach ($pairs as $key => $value) {
320	1	$map[$key] = $value;
321		}
322		} else {
323	1	foreach ($pairs as $pair) {
324	1	assertType($pair, Pair::class,
325	1	sprintf(
326	1	"Expected object of type %s, object of type %s given",
327	1	Pair::class,
328	1	gettype($pair) === "object" ? get_class($pair) : gettype($pair)
329		)
330		);
331	1	$map[$pair->getKey()] = $pair->getValue();
332		}
333		}
334	2	return $map;
335		}
336
337		/**
338		* @inheritDoc
339		* @param callable $action f(entry: Pair<scalar, mixed>) -> mixed\|void
340		* @return void
341		*/
342	2	public function forEach(callable $action): void
343		{
344	2	foreach ($this->array as $key => $value) {
345	2	$action(pair($key, $value));
346		}
347	2	}
348
349		/**
350		* @inheritDoc
351		* @return ListInterface<Pair<scalar, mixed>>
352		*/
353	2	public function toList(): ListInterface
354		{
355	2	$list = emptyList();
356	2	foreach ($this->array as $key => $value) {
357	2	$list->add(pair($key, $value));
358		}
359	2	return $list;
360		}
361
362	1	public function toMap(): MapInterface
363		{
364	1	return mapOf(...$this->toList());
365		}
366
367		/**
368		* {@inheritDoc}
369		*/
370	1	public function toArray(): array
371		{
372	1	return $this->array;
373		}
374		}
375

seboettg / Collection

Branch — master (fb2e38)

MapTrait::filter() B

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