MemorySimpleCache::clear() - Code Metrics - Inspection of "Update `psr/log` version" - yiisoft/test-support - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#43)

by Rustam

created 2022-06-15 06:35 UTC

MemorySimpleCache::clear() A

↳ Parent: MemorySimpleCache

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
eloc	2
c	1
b	0
f	0
nc	1
nop	0
dl	0
loc	4
ccs	3
cts	3
cp	1
crap	1
rs	10

<?php

declare(strict_types=1);

namespace Yiisoft\Test\Support\SimpleCache;

use DateInterval;
use DateTime;
use Psr\SimpleCache\CacheInterface;
use Traversable;
use Yiisoft\Test\Support\SimpleCache\Exception\InvalidArgumentException;
use function array_key_exists;
use function is_object;
use function is_string;

final class MemorySimpleCache implements CacheInterface
{
    protected const EXPIRATION_INFINITY = 0;
    protected const EXPIRATION_EXPIRED = -1;

    public bool $returnOnSet = true;
    public bool $returnOnDelete = true;
    public bool $returnOnClear = true;

    /** @var array<string, array<int, mixed>> */
    protected array $cache = [];

    public function __construct(array $cacheData = [])
    {
        $this->setMultiple($cacheData);
    }

    public function get($key, $default = null)
    {
        $this->validateKey($key);
        if (array_key_exists($key, $this->cache) && !$this->isExpired($key)) {
            /** @psalm-var mixed $value */
            $value = $this->cache[$key][0];
            if (is_object($value)) {
                $value = clone $value;
            }

            return $value;
        }

        return $default;
    }

    public function set($key, $value, $ttl = null): bool
    {
        $this->validateKey($key);
        $expiration = $this->ttlToExpiration($ttl);
        if ($expiration < 0) {
            return $this->delete($key);
        }
        if (is_object($value)) {
            $value = clone $value;
        }
        $this->cache[$key] = [$value, $expiration];
        return $this->returnOnSet;
    }

    public function delete($key): bool
    {
        $this->validateKey($key);
        unset($this->cache[$key]);
        return $this->returnOnDelete;
    }

    public function clear(): bool
    {
        $this->cache = [];
        return $this->returnOnClear;
    }

    /**
     * @param iterable $keys
     * @param mixed $default
     *
     * @return mixed[]
     */
    public function getMultiple($keys, $default = null): iterable
    {
        $keys = $this->iterableToArray($keys);
        $this->validateKeys($keys);
        /** @psalm-var string[] $keys */
        $result = [];
        foreach ($keys as $key) {
            /** @psalm-var mixed */
            $result[$key] = $this->get($key, $default);
        }
        return $result;
    }

    /**
     * @param iterable $values
     * @param DateInterval|int|null $ttl
     */
    public function setMultiple($values, $ttl = null): bool
    {
        $values = $this->iterableToArray($values);
        $this->validateKeysOfValues($values);
        /**
         * @psalm-var mixed $value
         */
        foreach ($values as $key => $value) {
            $this->set((string) $key, $value, $ttl);
        }
        return $this->returnOnSet;
    }

    public function deleteMultiple($keys): bool
    {
        $keys = $this->iterableToArray($keys);
        $this->validateKeys($keys);
        /** @var string[] $keys */
        foreach ($keys as $key) {
            $this->delete($key);
        }
        return $this->returnOnDelete;
    }

    public function has($key): bool
    {
        $this->validateKey($key);
        /** @psalm-var string $key */
        return isset($this->cache[$key]) && !$this->isExpired($key);
    }

    /**
     * Get stored data
     *
     * @return array<array-key, mixed>

     */
    public function getValues(): array
    {
        $result = [];
        foreach ($this->cache as $key => $value) {
            /** @psalm-var mixed */
            $result[$key] = $value[0];
        }
        return $result;
    }

    /**
     * Checks whether item is expired or not
     */
    private function isExpired(string $key): bool
    {
        return $this->cache[$key][1] !== 0 && $this->cache[$key][1] <= time();
    }

    /**
     * Converts TTL to expiration
     *
     * @param DateInterval|int|null $ttl
     *
     * @return int
     */
    private function ttlToExpiration($ttl): int
    {
        $ttl = $this->normalizeTtl($ttl);

        if ($ttl === null) {
            $expiration = self::EXPIRATION_INFINITY;
        } elseif ($ttl <= 0) {
            $expiration = self::EXPIRATION_EXPIRED;
        } else {
            $expiration = $ttl + time();
        }

        return $expiration;
    }

    /**
     * Normalizes cache TTL handling strings and {@see DateInterval} objects.
     *
     * @param DateInterval|int|string|null $ttl raw TTL.
     *
     * @return int|null TTL value as UNIX timestamp or null meaning infinity
     */
    private function normalizeTtl($ttl): ?int
    {
        if ($ttl instanceof DateInterval) {
            return (new DateTime('@0'))
                ->add($ttl)
                ->getTimestamp();
        }

        if (is_string($ttl)) {
            return (int)$ttl;
        }

        return $ttl;
    }

    /**
     * @param mixed $iterable
     *
     * Converts iterable to array. If provided value is not iterable it throws an InvalidArgumentException
     */
    private function iterableToArray($iterable): array
    {
        if (!is_iterable($iterable)) {
            throw new InvalidArgumentException(sprintf('Iterable is expected, got %s.', gettype($iterable)));
        }
        return $iterable instanceof Traversable ? iterator_to_array($iterable) : $iterable;
    }

    /**
     * @param mixed $key
     */
    private function validateKey($key): void
    {
        if (!is_string($key) || $key === '' || strpbrk($key, '{}()/\@:')) {
            throw new InvalidArgumentException('Invalid key value.');
        }
    }

    /**
     * @param mixed[] $keys
     */
    private function validateKeys(array $keys): void
    {
        /** @psalm-var mixed $key */
        foreach ($keys as $key) {
            $this->validateKey($key);
        }
    }

    private function validateKeysOfValues(array $values): void
    {
        $keys = array_map('strval', array_keys($values));
        $this->validateKeys($keys);
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Test\Support\SimpleCache;
6
7		use DateInterval;
8		use DateTime;
9		use Psr\SimpleCache\CacheInterface;
10		use Traversable;
11		use Yiisoft\Test\Support\SimpleCache\Exception\InvalidArgumentException;
12		use function array_key_exists;
13		use function is_object;
14		use function is_string;
15
16		final class MemorySimpleCache implements CacheInterface
17		{
18		protected const EXPIRATION_INFINITY = 0;
19		protected const EXPIRATION_EXPIRED = -1;
20
21		public bool $returnOnSet = true;
22		public bool $returnOnDelete = true;
23		public bool $returnOnClear = true;
24
25		/** @var array<string, array<int, mixed>> */
26		protected array $cache = [];
27
28	285	public function __construct(array $cacheData = [])
29		{
30	285	$this->setMultiple($cacheData);
31		}
32
33	159	public function get($key, $default = null)
34		{
35	159	$this->validateKey($key);
36	143	if (array_key_exists($key, $this->cache) && !$this->isExpired($key)) {
37		/** @psalm-var mixed $value */
38	117	$value = $this->cache[$key][0];
39	117	if (is_object($value)) {
40	16	$value = clone $value;
41		}
42
43	117	return $value;
44		}
45
46	53	return $default;
47		}
48
49	200	public function set($key, $value, $ttl = null): bool
50		{
51	200	$this->validateKey($key);
52	184	$expiration = $this->ttlToExpiration($ttl);
53	184	if ($expiration < 0) {
54	2	return $this->delete($key);
55		}
56	184	if (is_object($value)) {
57	42	$value = clone $value;
58		}
59	184	$this->cache[$key] = [$value, $expiration];
60	184	return $this->returnOnSet;
61		}
62
63	46	public function delete($key): bool
64		{
65	46	$this->validateKey($key);
66	30	unset($this->cache[$key]);
67	30	return $this->returnOnDelete;
68		}
69
70	167	public function clear(): bool
71		{
72	167	$this->cache = [];
73	167	return $this->returnOnClear;
74		}
75
76		/**
77		* @param iterable $keys
78		* @param mixed $default
79		*
80		* @return mixed[]
81		*/
82	30	public function getMultiple($keys, $default = null): iterable
83		{
84	30	$keys = $this->iterableToArray($keys);
85	29	$this->validateKeys($keys);
86		/** @psalm-var string[] $keys */
87	15	$result = [];
88	15	foreach ($keys as $key) {
89		/** @psalm-var mixed */
90	15	$result[$key] = $this->get($key, $default);
91		}
92	15	return $result;
93		}
94
95		/**
96		* @param iterable $values
97		* @param DateInterval\|int\|null $ttl
98		*/
99	285	public function setMultiple($values, $ttl = null): bool
100		{
101	285	$values = $this->iterableToArray($values);
102	285	$this->validateKeysOfValues($values);
103		/**
104		* @psalm-var mixed $value
105		*/
106	285	foreach ($values as $key => $value) {
107	26	$this->set((string) $key, $value, $ttl);
108		}
109	285	return $this->returnOnSet;
110		}
111
112	18	public function deleteMultiple($keys): bool
113		{
114	18	$keys = $this->iterableToArray($keys);
115	17	$this->validateKeys($keys);
116		/** @var string[] $keys */
117	3	foreach ($keys as $key) {
118	3	$this->delete($key);
119		}
120	3	return $this->returnOnDelete;
121		}
122
123	70	public function has($key): bool
124		{
125	70	$this->validateKey($key);
126		/** @psalm-var string $key */
127	54	return isset($this->cache[$key]) && !$this->isExpired($key);
128		}
129
130		/**
131		* Get stored data
132		*
133		* @return array<array-key, mixed>
		0 ignored issues – show Documentation Bug introduced 2020-12-08 16:11 UTC by Report Bug Copy Issue Report The doc comment `array<array-key, mixed>` at position `2` could not be parsed: Unknown type name 'array-key' at position 2 in array<array-key, mixed>. Loading history...
134		*/
135	1	public function getValues(): array
136		{
137	1	$result = [];
138	1	foreach ($this->cache as $key => $value) {
139		/** @psalm-var mixed */
140	1	$result[$key] = $value[0];
141		}
142	1	return $result;
143		}
144
145		/**
146		* Checks whether item is expired or not
147		*/
148	133	private function isExpired(string $key): bool
149		{
150	133	return $this->cache[$key][1] !== 0 && $this->cache[$key][1] <= time();
151		}
152
153		/**
154		* Converts TTL to expiration
155		*
156		* @param DateInterval\|int\|null $ttl
157		*
158		* @return int
159		*/
160	184	private function ttlToExpiration($ttl): int
161		{
162	184	$ttl = $this->normalizeTtl($ttl);
163
164	184	if ($ttl === null) {
165	182	$expiration = self::EXPIRATION_INFINITY;
166	6	} elseif ($ttl <= 0) {
167	2	$expiration = self::EXPIRATION_EXPIRED;
168		} else {
169	4	$expiration = $ttl + time();
170		}
171
172	184	return $expiration;
173		}
174
175		/**
176		* Normalizes cache TTL handling strings and {@see DateInterval} objects.
177		*
178		* @param DateInterval\|int\|string\|null $ttl raw TTL.
179		*
180		* @return int\|null TTL value as UNIX timestamp or null meaning infinity
181		*/
182	184	private function normalizeTtl($ttl): ?int
183		{
184	184	if ($ttl instanceof DateInterval) {
185	2	return (new DateTime('@0'))
186	2	->add($ttl)
187	2	->getTimestamp();
188		}
189
190	184	if (is_string($ttl)) {
191		return (int)$ttl;
192		}
193
194	184	return $ttl;
195		}
196
197		/**
198		* @param mixed $iterable
199		*
200		* Converts iterable to array. If provided value is not iterable it throws an InvalidArgumentException
201		*/
202	285	private function iterableToArray($iterable): array
203		{
204	285	if (!is_iterable($iterable)) {
205	3	throw new InvalidArgumentException(sprintf('Iterable is expected, got %s.', gettype($iterable)));
206		}
207	285	return $iterable instanceof Traversable ? iterator_to_array($iterable) : $iterable;
208		}
209
210		/**
211		* @param mixed $key
212		*/
213	278	private function validateKey($key): void
214		{
215	278	if (!is_string($key) \|\| $key === '' \|\| strpbrk($key, '{}()/\@:')) {
216	106	throw new InvalidArgumentException('Invalid key value.');
217		}
218		}
219
220		/**
221		* @param mixed[] $keys
222		*/
223	285	private function validateKeys(array $keys): void
224		{
225		/** @psalm-var mixed $key */
226	285	foreach ($keys as $key) {
227	68	$this->validateKey($key);
228		}
229		}
230
231	285	private function validateKeysOfValues(array $values): void
232		{
233	285	$keys = array_map('strval', array_keys($values));
234	285	$this->validateKeys($keys);
235		}
236		}
237

yiisoft / test-support

Pull Request — master (#43)

MemorySimpleCache::clear() A

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