AbstractEnum::unserialize() - Code Metrics - Inspection of "constants are scalars, can be securely serialized" - phpgears/enum - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 9a2220...723433 )

by Julián

created 2020-03-07 11:36 UTC

AbstractEnum::unserialize() A

↳ Parent: AbstractEnum

Complexity

Conditions	1
Paths	1

Size

Total Lines	10
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	5
c	0
b	0
f	0
dl	0
loc	10
rs	10
cc	1
nc	1
nop	1

<?php

/*
 * enum (https://github.com/phpgears/enum).
 * Enum object for PHP.
 *
 * @license MIT
 * @link https://github.com/phpgears/enum
 * @author Julián Gutiérrez <[email protected]>
 */

declare(strict_types=1);

namespace Gears\Enum;

use Gears\Enum\Exception\EnumException;
use Gears\Enum\Exception\InvalidEnumNameException;
use Gears\Enum\Exception\InvalidEnumValueException;
use Gears\Immutability\ImmutabilityBehaviour;

/**
 * Base immutable enum class.
 */
abstract class AbstractEnum implements Enum
{
    use ImmutabilityBehaviour;

    /**
     * Class is final checked map.
     *
     * @var bool[]
     */
    protected static $finalCheckMap = [];

    /**
     * Enum class constants map.
     *
     * @var array<string, mixed[]>
     */
    protected static $enumCacheMap = [];

    /**
     * Enum value.
     *
     * @var mixed
     */
    private $value;

    /**
     * AbstractEnum constructor.
     *
     * @param static|mixed $value
     *
     * @throws EnumException
     * @throws InvalidEnumValueException
     */
    final public function __construct($value)
    {
        $this->assertImmutable();
        $this->assertFinal();

        $this->checkValue($value);

        $this->value = $value instanceof Enum ? $value->getValue() : $value;
    }

    /**
     * Assert enum is final.
     *
     * @throws EnumException
     */
    private function assertFinal(): void
    {
        $class = static::class;

        if (isset(static::$finalCheckMap[$class])) {
            return;
        }

        if (!(new \ReflectionClass(static::class))->isFinal()) {
            throw new EnumException(\sprintf('Enum class "%s" should be final', static::class));
        }

        static::$finalCheckMap[$class] = true;
    }

    /**
     * Value based static constructor.
     *
     * @param string  $name
     * @param mixed[] $params
     *
     * @return self
     */
    final public static function __callStatic(string $name, array $params)
    {
        if (\count($params) !== 0) {
            throw new EnumException('Enum static constructor must be called with no parameters');
        }

        $enumerator = static::normalizeName($name);
        $enumerators = static::getEnumerators();

        if (!\array_key_exists($enumerator, $enumerators)) {
            throw new InvalidEnumNameException(\sprintf(
                '"%s" is not a valid enumerator for enum "%s"',
                $name,
                static::class
            ));
        }

        return new static($enumerators[$enumerator]);
    }

    /**
     * {@inheritdoc}
     */
    final public function isEqualTo(Enum $enum): bool
    {
        return \get_class($enum) === static::class && $enum->getValue() === $this->value;
    }

    /**
     * {@inheritdoc}
     */
    final public function isAnyOf(array $enums): bool
    {
        foreach ($enums as $enum) {
            if ($this->isEqualTo($enum)) {
                return true;
            }
        }

        return false;
    }

    /**
     * {@inheritdoc}
     */
    final public function getValue()
    {
        return $this->value;
    }

    /**
     * @return array<string, mixed>
     */
    final public function __serialize(): array
    {
        return ['value' => $this->value];
    }

    /**
     * @param array<string, mixed> $data
     *
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */
    final public function __unserialize(array $data): void
    {
        $this->assertImmutable();
        $this->assertFinal();

        $value = $data['value'];

        $this->checkValue($value);

        $this->value = $value;
    }

    /**
     * {@inheritdoc}
     */
    final public function serialize(): string
    {
        return \serialize($this->value);
    }

    /**
     * {@inheritdoc}
     *
     * @param mixed $serialized
     */
    public function unserialize($serialized): void
    {
        $this->assertImmutable();
        $this->assertFinal();

        $value = \unserialize($serialized, ['allowed_classes' => false]);

        $this->checkValue($value);

        $this->value = $value;
    }

    final public function __clone()
    {
    }

    /**
     * Check enum value validity.
     *
     * @param static|mixed $value
     *
     * @throws InvalidEnumValueException
     */
    private function checkValue($value): void
    {
        if ($value instanceof Enum) {
            if (\get_class($value) !== static::class) {
                throw new InvalidEnumValueException(\sprintf(
                    'Enum "%s" cannot be created from enum "%s"',
                    static::class,
                    \get_class($value)
                ));
            }

            return;
        }

        if (!\in_array($value, static::getEnumerators(), true)) {
            throw new InvalidEnumValueException(\sprintf(
                '"%s" is not a valid value for enum "%s"',
                $value,
                static::class
            ));
        }
    }

    /**
     * Get list of enumerators.
     *
     * @return array<string, mixed>
     */
    private static function getEnumerators(): array
    {
        $class = static::class;

        if (!isset(static::$enumCacheMap[$class])) {
            $constants = [];
            foreach ((new \ReflectionClass($class))->getReflectionConstants() as $reflectionConstant) {
                if ($reflectionConstant->isPublic()) {
                    $constants[static::normalizeName($reflectionConstant->getName())] = $reflectionConstant->getValue();
                }
            }

            static::$enumCacheMap[$class] = $constants;
        }

        return static::$enumCacheMap[$class];
    }

    /**
     * Normalize name.
     *
     * @param string $name
     *
     * @return string
     */
    private static function normalizeName(string $name): string
    {
        return \strtoupper($name);
    }

    /**
     * {@inheritdoc}
     *
     * @return string[]
     */
    final protected function getAllowedInterfaces(): array
    {
        return [Enum::class];
    }
}


1			<?php
2
3			/*
4			* enum (https://github.com/phpgears/enum).
5			* Enum object for PHP.
6			*
7			* @license MIT
8			* @link https://github.com/phpgears/enum
9			* @author Julián Gutiérrez <[email protected]>
10			*/
11
12			declare(strict_types=1);
13
14			namespace Gears\Enum;
15
16			use Gears\Enum\Exception\EnumException;
17			use Gears\Enum\Exception\InvalidEnumNameException;
18			use Gears\Enum\Exception\InvalidEnumValueException;
19			use Gears\Immutability\ImmutabilityBehaviour;
20
21			/**
22			* Base immutable enum class.
23			*/
24			abstract class AbstractEnum implements Enum
25			{
26			use ImmutabilityBehaviour;
27
28			/**
29			* Class is final checked map.
30			*
31			* @var bool[]
32			*/
33			protected static $finalCheckMap = [];
34
35			/**
36			* Enum class constants map.
37			*
38			* @var array<string, mixed[]>
39			*/
40			protected static $enumCacheMap = [];
41
42			/**
43			* Enum value.
44			*
45			* @var mixed
46			*/
47			private $value;
48
49			/**
50			* AbstractEnum constructor.
51			*
52			* @param static\|mixed $value
53			*
54			* @throws EnumException
55			* @throws InvalidEnumValueException
56			*/
57			final public function __construct($value)
58			{
59			$this->assertImmutable();
60			$this->assertFinal();
61
62			$this->checkValue($value);
63
64			$this->value = $value instanceof Enum ? $value->getValue() : $value;
65			}
66
67			/**
68			* Assert enum is final.
69			*
70			* @throws EnumException
71			*/
72			private function assertFinal(): void
73			{
74			$class = static::class;
75
76			if (isset(static::$finalCheckMap[$class])) {
77			return;
78			}
79
80			if (!(new \ReflectionClass(static::class))->isFinal()) {
81			throw new EnumException(\sprintf('Enum class "%s" should be final', static::class));
82			}
83
84			static::$finalCheckMap[$class] = true;
85			}
86
87			/**
88			* Value based static constructor.
89			*
90			* @param string $name
91			* @param mixed[] $params
92			*
93			* @return self
94			*/
95			final public static function __callStatic(string $name, array $params)
96			{
97			if (\count($params) !== 0) {
98			throw new EnumException('Enum static constructor must be called with no parameters');
99			}
100
101			$enumerator = static::normalizeName($name);
102			$enumerators = static::getEnumerators();
103
104			if (!\array_key_exists($enumerator, $enumerators)) {
105			throw new InvalidEnumNameException(\sprintf(
106			'"%s" is not a valid enumerator for enum "%s"',
107			$name,
108			static::class
109			));
110			}
111
112			return new static($enumerators[$enumerator]);
113			}
114
115			/**
116			* {@inheritdoc}
117			*/
118			final public function isEqualTo(Enum $enum): bool
119			{
120			return \get_class($enum) === static::class && $enum->getValue() === $this->value;
121			}
122
123			/**
124			* {@inheritdoc}
125			*/
126			final public function isAnyOf(array $enums): bool
127			{
128			foreach ($enums as $enum) {
129			if ($this->isEqualTo($enum)) {
130			return true;
131			}
132			}
133
134			return false;
135			}
136
137			/**
138			* {@inheritdoc}
139			*/
140			final public function getValue()
141			{
142			return $this->value;
143			}
144
145			/**
146			* @return array<string, mixed>
147			*/
148			final public function __serialize(): array
149			{
150			return ['value' => $this->value];
151			}
152
153			/**
154			* @param array<string, mixed> $data
155			*
156			* @SuppressWarnings(PHPMD.UnusedFormalParameter)
157			*/
158			final public function __unserialize(array $data): void
159			{
160			$this->assertImmutable();
161			$this->assertFinal();
162
163			$value = $data['value'];
164
165			$this->checkValue($value);
166
167			$this->value = $value;
168			}
169
170			/**
171			* {@inheritdoc}
172			*/
173			final public function serialize(): string
174			{
175			return \serialize($this->value);
176			}
177
178			/**
179			* {@inheritdoc}
180			*
181			* @param mixed $serialized
182			*/
183			public function unserialize($serialized): void
184			{
185			$this->assertImmutable();
186			$this->assertFinal();
187
188			$value = \unserialize($serialized, ['allowed_classes' => false]);
189
190			$this->checkValue($value);
191
192			$this->value = $value;
193			}
194
195			final public function __clone()
196			{
197			}
198
199			/**
200			* Check enum value validity.
201			*
202			* @param static\|mixed $value
203			*
204			* @throws InvalidEnumValueException
205			*/
206			private function checkValue($value): void
207			{
208			if ($value instanceof Enum) {
209			if (\get_class($value) !== static::class) {
210			throw new InvalidEnumValueException(\sprintf(
211			'Enum "%s" cannot be created from enum "%s"',
212			static::class,
213			\get_class($value)
214			));
215			}
216
217			return;
218			}
219
220			if (!\in_array($value, static::getEnumerators(), true)) {
221			throw new InvalidEnumValueException(\sprintf(
222			'"%s" is not a valid value for enum "%s"',
223			$value,
224			static::class
225			));
226			}
227			}
228
229			/**
230			* Get list of enumerators.
231			*
232			* @return array<string, mixed>
233			*/
234			private static function getEnumerators(): array
235			{
236			$class = static::class;
237
238			if (!isset(static::$enumCacheMap[$class])) {
239			$constants = [];
240			foreach ((new \ReflectionClass($class))->getReflectionConstants() as $reflectionConstant) {
241			if ($reflectionConstant->isPublic()) {
242			$constants[static::normalizeName($reflectionConstant->getName())] = $reflectionConstant->getValue();
243			}
244			}
245
246			static::$enumCacheMap[$class] = $constants;
247			}
248
249			return static::$enumCacheMap[$class];
250			}
251
252			/**
253			* Normalize name.
254			*
255			* @param string $name
256			*
257			* @return string
258			*/
259			private static function normalizeName(string $name): string
260			{
261			return \strtoupper($name);
262			}
263
264			/**
265			* {@inheritdoc}
266			*
267			* @return string[]
268			*/
269			final protected function getAllowedInterfaces(): array
270			{
271			return [Enum::class];
272			}
273			}
274

phpgears / enum

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AbstractEnum::unserialize() A

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