Enum::getMappedIndex() - Code Metrics - Inspection of "enum map index and value" - spatie/enum - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#25)

by Tom

created 2019-04-12 13:25 UTC

Enum::getMappedIndex() A

↳ Parent: Enum

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	8
rs	10
c	0
b	0
f	0
cc	2
nc	2
nop	1

<?php

namespace Spatie\Enum;

use TypeError;
use ReflectionClass;
use JsonSerializable;
use ReflectionMethod;
use ArgumentCountError;
use BadMethodCallException;
use Spatie\Enum\Exceptions\InvalidNameException;
use Spatie\Enum\Exceptions\InvalidIndexException;
use Spatie\Enum\Exceptions\InvalidValueException;
use Spatie\Enum\Exceptions\DuplicatedIndexException;
use Spatie\Enum\Exceptions\DuplicatedValueException;

abstract class Enum implements Enumerable, JsonSerializable
{
    /** @var array[] */
    protected static $cache = [];

    /** @var int */
    protected $index;

    /** @var string */
    protected $value;

    /** @var string */
    protected $name;

    public function __construct(?string $name = null, ?string $value = null, ?int $index = null)
    {
        if (is_null($name) && is_null($value) && is_null($index)) {
            ['name' => $name, 'value' => $value, 'index' => $index] = $this->resolveByStaticCall();
        }

        if (is_null($name) || ! static::isValidName($name)) {
            throw new InvalidNameException($name, static::class);
        }

        if (is_null($value) || ! static::isValidValue($value)) {
            throw new InvalidValueException($value, static::class);
        }

        if (is_null($index) || ! static::isValidIndex($index)) {
            throw new InvalidIndexException($index, static::class);
        }

        $this->name = $name;
        $this->value = $value;
        $this->index = $index;
    }

    public function __call($name, $arguments)
    {
        if (static::startsWith($name, 'is')) {
            return $this->isEqual(substr($name, 2));
        }

        throw new BadMethodCallException('Call to undefined method '.static::class.'->'.$name.'()');
    }

    public static function __callStatic($name, $arguments)
    {
        if (static::startsWith($name, 'is')) {
            if (! isset($arguments[0])) {
                throw new ArgumentCountError('Calling '.static::class.'::'.$name.'() in static context requires one argument');
            }

            return static::make($arguments[0])->$name();
        }

        if (static::isValidName($name) || static::isValidValue($name)) {
            return static::make($name);
        }

        throw new BadMethodCallException('Call to undefined method '.static::class.'::'.$name.'()');
    }

    public function __toString(): string
    {
        return $this->getValue();
    }

    public function getIndex(): int
    {
        return $this->index;
    }

    public static function getIndices(): array
    {
        return array_column(static::resolve(), 'index');
    }

    public function getValue(): string
    {
        return $this->value;
    }

    public static function getValues(): array
    {
        return array_column(static::resolve(), 'value');
    }

    public function getName(): string
    {
        return $this->name;
    }

    public static function getNames(): array
    {
        return array_keys(static::resolve());
    }

    public function isAny(array $values): bool
    {
        foreach ($values as $value) {
            if ($this->isEqual($value)) {
                return true;
            }
        }

        return false;
    }

    public function isEqual($value): bool
    {
        if (is_int($value) || is_string($value)) {
            $value = static::make($value);
        }

        if ($value instanceof $this) {
            return $value->getValue() === $this->getValue();
        }

        return false;
    }

    public function jsonSerialize()
    {
        return $this->getValue();
    }

    /**
     * @param int|string $value
     *
     * @return static
     */
    public static function make($value): Enumerable
    {
        if (! is_int($value) && ! is_string($value)) {
            throw new TypeError(static::class.'::make() expects string|int as argument but '.gettype($value).' given');

        }

        $name = null;
        $index = null;

        if (is_int($value)) {
            if (! static::isValidIndex($value)) {
                throw new InvalidIndexException($value, static::class);
            }

            [$name, $index, $value] = static::resolveByIndex($value);
        } elseif (is_string($value)) {
            [$name, $index, $value] = static::resolveByString($value);
        }

        if (is_string($name) && method_exists(static::class, $name)) {
            return forward_static_call(static::class.'::'.$name);
        }

        return new static($name, $value, $index);
    }

    public static function toArray(): array
    {
        $resolved = static::resolve();

        return array_combine(array_column($resolved, 'value'), array_column($resolved, 'index'));
    }

    protected static function isValidIndex(int $index): bool
    {
        return in_array($index, static::getIndices(), true);
    }

    protected static function isValidName(string $value): bool
    {
        return in_array(strtoupper($value), static::getNames(), true);
    }

    protected static function isValidValue(string $value): bool
    {
        return in_array($value, static::getValues(), true);
    }

    protected static function resolve(): array
    {
        $values = [];

        $class = static::class;

        if (isset(self::$cache[$class])) {
            return self::$cache[$class];
        }

        self::$cache[$class] = [];

        $reflection = new ReflectionClass(static::class);

        foreach (self::resolveFromDocBlocks($reflection) as $value) {
            $values[] = $value;
        }

        foreach (self::resolveFromStaticMethods($reflection) as $value) {
            $values[] = $value;
        }

        foreach ($values as $index => $value) {
            $name = strtoupper($value);

            self::$cache[$class][$name] = [
                'name' => $name,
                'index' => static::getMappedIndex($name) ?? $index,
                'value' => static::getMappedValue($name) ?? $value,
            ];
        }

        foreach (self::$cache[$class] as $name => $enum) {
            self::$cache[$class][$name]['value'] = static::make($name)->getValue();
            self::$cache[$class][$name]['index'] = static::make($name)->getIndex();
        }

        $duplicatedValues = array_filter(array_count_values(static::getValues()), function (int $count) {
            return $count > 1;
        });

        if (! empty($duplicatedValues)) {
            self::clearCache();
            throw new DuplicatedValueException(array_keys($duplicatedValues), static::class);
        }

        $duplicatedIndices = array_filter(array_count_values(static::getIndices()), function (int $count) {
            return $count > 1;
        });

        if (! empty($duplicatedIndices)) {
            self::clearCache();
            throw new DuplicatedIndexException(array_keys($duplicatedIndices), static::class);
        }

        return self::$cache[$class];
    }

    protected static function resolveFromDocBlocks(ReflectionClass $reflection): array
    {
        $values = [];

        $docComment = $reflection->getDocComment();

        if (! $docComment) {
            return $values;
        }

        preg_match_all('/\@method static self ([\w]+)\(\)/', $docComment, $matches);

        foreach ($matches[1] ?? [] as $value) {
            $values[] = $value;
        }

        return $values;
    }

    protected static function resolveFromStaticMethods(ReflectionClass $reflection): array
    {
        $values = [];
        foreach ($reflection->getMethods(ReflectionMethod::IS_STATIC) as $method) {
            if ($method->getDeclaringClass()->getName() === self::class) {
                continue;
            }

            $values[] = $method->getName();
        }

        return $values;
    }

    protected function resolveByStaticCall(): array
    {
        if (strpos(get_class($this), 'class@anonymous') !== 0) {
            throw new InvalidValueException(null, static::class);
        }

        $backtrace = debug_backtrace();

        $name = $backtrace[2]['function'];

        if (! static::isValidName($name)) {
            throw new InvalidValueException($name, static::class);
        }

        return static::resolve()[strtoupper($name)];
    }

    protected static function resolveByIndex(int $index): array
    {
        $name = array_combine(static::getIndices(), static::getNames())[$index];
        $value = array_search($index, static::toArray());

        return [$name, $index, $value];
    }

    protected static function resolveByString(string $string): array
    {
        if (static::isValidValue($string)) {
            return static::resolveByValue($string);
        }

        if (static::isValidName($string)) {
            return static::resolveByName($string);
        }

        throw new InvalidValueException($string, static::class);
    }

    protected static function resolveByValue(string $value): array
    {
        $index = static::toArray()[$value];
        $name = array_combine(static::getValues(), static::getNames())[$value];

        return [$name, $index, $value];
    }

    protected static function resolveByName(string $name): array
    {
        ['value' => $value, 'index' => $index] = static::resolve()[strtoupper($name)];


        return [$name, $index, $value];
    }

    protected static function startsWith(string $haystack, string $needle)
    {
        return strlen($haystack) > 2 && strpos($haystack, $needle) === 0;
    }

    protected static function clearCache()
    {
        unset(self::$cache[static::class]);
    }

    protected static function getMappedIndex(string $name): ?int
    {
        if (! defined(static::class.'::MAP_INDEX')) {
            return null;
        }

        return constant(static::class.'::MAP_INDEX')[$name] ?? null;
    }

    protected static function getMappedValue(string $name): ?string
    {
        if (! defined(static::class.'::MAP_VALUE')) {
            return null;
        }

        return constant(static::class.'::MAP_VALUE')[$name] ?? null;
    }
}


1			<?php
2
3			namespace Spatie\Enum;
4
5			use TypeError;
6			use ReflectionClass;
7			use JsonSerializable;
8			use ReflectionMethod;
9			use ArgumentCountError;
10			use BadMethodCallException;
11			use Spatie\Enum\Exceptions\InvalidNameException;
12			use Spatie\Enum\Exceptions\InvalidIndexException;
13			use Spatie\Enum\Exceptions\InvalidValueException;
14			use Spatie\Enum\Exceptions\DuplicatedIndexException;
15			use Spatie\Enum\Exceptions\DuplicatedValueException;
16
17			abstract class Enum implements Enumerable, JsonSerializable
18			{
19			/** @var array[] */
20			protected static $cache = [];
21
22			/** @var int */
23			protected $index;
24
25			/** @var string */
26			protected $value;
27
28			/** @var string */
29			protected $name;
30
31			public function __construct(?string $name = null, ?string $value = null, ?int $index = null)
32			{
33			if (is_null($name) && is_null($value) && is_null($index)) {
34			['name' => $name, 'value' => $value, 'index' => $index] = $this->resolveByStaticCall();
35			}
36
37			if (is_null($name) \|\| ! static::isValidName($name)) {
38			throw new InvalidNameException($name, static::class);
39			}
40
41			if (is_null($value) \|\| ! static::isValidValue($value)) {
42			throw new InvalidValueException($value, static::class);
43			}
44
45			if (is_null($index) \|\| ! static::isValidIndex($index)) {
46			throw new InvalidIndexException($index, static::class);
47			}
48
49			$this->name = $name;
50			$this->value = $value;
51			$this->index = $index;
52			}
53
54			public function __call($name, $arguments)
55			{
56			if (static::startsWith($name, 'is')) {
57			return $this->isEqual(substr($name, 2));
58			}
59
60			throw new BadMethodCallException('Call to undefined method '.static::class.'->'.$name.'()');
61			}
62
63			public static function __callStatic($name, $arguments)
64			{
65			if (static::startsWith($name, 'is')) {
66			if (! isset($arguments[0])) {
67			throw new ArgumentCountError('Calling '.static::class.'::'.$name.'() in static context requires one argument');
68			}
69
70			return static::make($arguments[0])->$name();
71			}
72
73			if (static::isValidName($name) \|\| static::isValidValue($name)) {
74			return static::make($name);
75			}
76
77			throw new BadMethodCallException('Call to undefined method '.static::class.'::'.$name.'()');
78			}
79
80			public function __toString(): string
81			{
82			return $this->getValue();
83			}
84
85			public function getIndex(): int
86			{
87			return $this->index;
88			}
89
90			public static function getIndices(): array
91			{
92			return array_column(static::resolve(), 'index');
93			}
94
95			public function getValue(): string
96			{
97			return $this->value;
98			}
99
100			public static function getValues(): array
101			{
102			return array_column(static::resolve(), 'value');
103			}
104
105			public function getName(): string
106			{
107			return $this->name;
108			}
109
110			public static function getNames(): array
111			{
112			return array_keys(static::resolve());
113			}
114
115			public function isAny(array $values): bool
116			{
117			foreach ($values as $value) {
118			if ($this->isEqual($value)) {
119			return true;
120			}
121			}
122
123			return false;
124			}
125
126			public function isEqual($value): bool
127			{
128			if (is_int($value) \|\| is_string($value)) {
129			$value = static::make($value);
130			}
131
132			if ($value instanceof $this) {
133			return $value->getValue() === $this->getValue();
134			}
135
136			return false;
137			}
138
139			public function jsonSerialize()
140			{
141			return $this->getValue();
142			}
143
144			/**
145			* @param int\|string $value
146			*
147			* @return static
148			*/
149			public static function make($value): Enumerable
150			{
151			if (! is_int($value) && ! is_string($value)) {
152			throw new TypeError(static::class.'::make() expects string\|int as argument but '.gettype($value).' given');
			0 ignored issues – show Unused Code introduced 2019-04-03 08:51 UTC by Report Bug Copy Issue Report The call to `TypeError::__construct()` has too many arguments starting with `static::class . '::make(...type($value) . ' given'`. This check compares calls to functions or methods with their respective definitions. If the call has more arguments than are defined, it raises an issue. If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress. In this case you can add the `@ignore` PhpDoc annotation to the duplicate definition and it will be ignored. Loading history...
153			}
154
155			$name = null;
156			$index = null;
157
158			if (is_int($value)) {
159			if (! static::isValidIndex($value)) {
160			throw new InvalidIndexException($value, static::class);
161			}
162
163			[$name, $index, $value] = static::resolveByIndex($value);
164			} elseif (is_string($value)) {
165			[$name, $index, $value] = static::resolveByString($value);
166			}
167
168			if (is_string($name) && method_exists(static::class, $name)) {
169			return forward_static_call(static::class.'::'.$name);
170			}
171
172			return new static($name, $value, $index);
173			}
174
175			public static function toArray(): array
176			{
177			$resolved = static::resolve();
178
179			return array_combine(array_column($resolved, 'value'), array_column($resolved, 'index'));
180			}
181
182			protected static function isValidIndex(int $index): bool
183			{
184			return in_array($index, static::getIndices(), true);
185			}
186
187			protected static function isValidName(string $value): bool
188			{
189			return in_array(strtoupper($value), static::getNames(), true);
190			}
191
192			protected static function isValidValue(string $value): bool
193			{
194			return in_array($value, static::getValues(), true);
195			}
196
197			protected static function resolve(): array
198			{
199			$values = [];
200
201			$class = static::class;
202
203			if (isset(self::$cache[$class])) {
204			return self::$cache[$class];
205			}
206
207			self::$cache[$class] = [];
208
209			$reflection = new ReflectionClass(static::class);
210
211			foreach (self::resolveFromDocBlocks($reflection) as $value) {
212			$values[] = $value;
213			}
214
215			foreach (self::resolveFromStaticMethods($reflection) as $value) {
216			$values[] = $value;
217			}
218
219			foreach ($values as $index => $value) {
220			$name = strtoupper($value);
221
222			self::$cache[$class][$name] = [
223			'name' => $name,
224			'index' => static::getMappedIndex($name) ?? $index,
225			'value' => static::getMappedValue($name) ?? $value,
226			];
227			}
228
229			foreach (self::$cache[$class] as $name => $enum) {
230			self::$cache[$class][$name]['value'] = static::make($name)->getValue();
231			self::$cache[$class][$name]['index'] = static::make($name)->getIndex();
232			}
233
234			$duplicatedValues = array_filter(array_count_values(static::getValues()), function (int $count) {
235			return $count > 1;
236			});
237
238			if (! empty($duplicatedValues)) {
239			self::clearCache();
240			throw new DuplicatedValueException(array_keys($duplicatedValues), static::class);
241			}
242
243			$duplicatedIndices = array_filter(array_count_values(static::getIndices()), function (int $count) {
244			return $count > 1;
245			});
246
247			if (! empty($duplicatedIndices)) {
248			self::clearCache();
249			throw new DuplicatedIndexException(array_keys($duplicatedIndices), static::class);
250			}
251
252			return self::$cache[$class];
253			}
254
255			protected static function resolveFromDocBlocks(ReflectionClass $reflection): array
256			{
257			$values = [];
258
259			$docComment = $reflection->getDocComment();
260
261			if (! $docComment) {
262			return $values;
263			}
264
265			preg_match_all('/\@method static self ([\w]+)\(\)/', $docComment, $matches);
266
267			foreach ($matches[1] ?? [] as $value) {
268			$values[] = $value;
269			}
270
271			return $values;
272			}
273
274			protected static function resolveFromStaticMethods(ReflectionClass $reflection): array
275			{
276			$values = [];
277			foreach ($reflection->getMethods(ReflectionMethod::IS_STATIC) as $method) {
278			if ($method->getDeclaringClass()->getName() === self::class) {
279			continue;
280			}
281
282			$values[] = $method->getName();
283			}
284
285			return $values;
286			}
287
288			protected function resolveByStaticCall(): array
289			{
290			if (strpos(get_class($this), 'class@anonymous') !== 0) {
291			throw new InvalidValueException(null, static::class);
292			}
293
294			$backtrace = debug_backtrace();
295
296			$name = $backtrace[2]['function'];
297
298			if (! static::isValidName($name)) {
299			throw new InvalidValueException($name, static::class);
300			}
301
302			return static::resolve()[strtoupper($name)];
303			}
304
305			protected static function resolveByIndex(int $index): array
306			{
307			$name = array_combine(static::getIndices(), static::getNames())[$index];
308			$value = array_search($index, static::toArray());
309
310			return [$name, $index, $value];
311			}
312
313			protected static function resolveByString(string $string): array
314			{
315			if (static::isValidValue($string)) {
316			return static::resolveByValue($string);
317			}
318
319			if (static::isValidName($string)) {
320			return static::resolveByName($string);
321			}
322
323			throw new InvalidValueException($string, static::class);
324			}
325
326			protected static function resolveByValue(string $value): array
327			{
328			$index = static::toArray()[$value];
329			$name = array_combine(static::getValues(), static::getNames())[$value];
330
331			return [$name, $index, $value];
332			}
333
334			protected static function resolveByName(string $name): array
335			{
336			['value' => $value, 'index' => $index] = static::resolve()[strtoupper($name)];
			0 ignored issues – show Bug introduced 2019-04-03 14:45 UTC by Report Bug Copy Issue Report The variable `$value` does not exist. Did you forget to declare it? This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug. Loading history... Bug introduced 2019-04-03 14:45 UTC by Report Bug Copy Issue Report The variable `$index` does not exist. Did you forget to declare it? This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug. Loading history...
337
338			return [$name, $index, $value];
339			}
340
341			protected static function startsWith(string $haystack, string $needle)
342			{
343			return strlen($haystack) > 2 && strpos($haystack, $needle) === 0;
344			}
345
346			protected static function clearCache()
347			{
348			unset(self::$cache[static::class]);
349			}
350
351			protected static function getMappedIndex(string $name): ?int
352			{
353			if (! defined(static::class.'::MAP_INDEX')) {
354			return null;
355			}
356
357			return constant(static::class.'::MAP_INDEX')[$name] ?? null;
358			}
359
360			protected static function getMappedValue(string $name): ?string
361			{
362			if (! defined(static::class.'::MAP_VALUE')) {
363			return null;
364			}
365
366			return constant(static::class.'::MAP_VALUE')[$name] ?? null;
367			}
368			}
369

spatie / enum

Pull Request — master (#25)

Enum::getMappedIndex() A

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