FlaggedEnum::withoutFlags() - Code Metrics - Inspection of "Base FlaggedEnum::readables() implementation" - Elao/PhpEnums - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#31)

by Maxime

created 2017-06-22 15:31 UTC

FlaggedEnum::withoutFlags() A

↳ Parent: FlaggedEnum

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes

Metric	Value
dl	0
loc	8
ccs	0
cts	0
cp	0
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	4
nc	2
nop	1
crap	6

<?php

/*
 * This file is part of the "elao/enum" package.
 *
 * Copyright (C) 2016 Elao
 *
 * @author Elao <[email protected]>
 */

namespace Elao\Enum;

use Elao\Enum\Exception\InvalidValueException;
use Elao\Enum\Exception\LogicException;

abstract class FlaggedEnum extends ReadableEnum
{
    const NONE = 0;

    /** @var array */
    private static $masks = [];

    /** @var int[] */
    protected $flags;

    /**
     * {@inheritdoc}
     */
    public static function accepts($value): bool
    {
        if (!is_int($value)) {
            return false;
        }

        if ($value === self::NONE) {
            return true;
        }

        return $value === ($value & self::getBitmask());
    }

    /**
     * {@inheritdoc}
     */
    public static function readables(): array
    {
        $readables = [];
        $constants = (new \ReflectionClass(static::class))->getConstants();
        foreach (static::values() as $value) {
            $constantName = array_search($value, $constants, true);
            $readables[$value] = ucfirst(strtolower(str_replace('_', ' ', $constantName)));
        }

        return $readables;
    }

    /**
     * {@inheritdoc}
     *
     * @param string $separator A delimiter used between each bit flag's readable string
     */
    public static function readableFor($value, string $separator = '; '): string
    {
        if (!static::accepts($value)) {
            throw new InvalidValueException($value, static::class);
        }
        if ($value === self::NONE) {
            return static::readableForNone();
        }

        $humanRepresentations = static::readables();

        if (isset($humanRepresentations[$value])) {
            return $humanRepresentations[$value];
        }

        $parts = [];

        foreach ($humanRepresentations as $flag => $readableValue) {
            if ($flag === ($flag & $value)) {
                $parts[] = $readableValue;
            }
        }

        return implode($separator, $parts);
    }

    /**
     * Gets the human representation for the none value.
     *
     * @return string
     */
    protected static function readableForNone(): string
    {
        return 'None';
    }

    /**
     * Gets an integer value of the possible flags for enumeration.
     *
     * @throws LogicException If the possibles values are not valid bit flags
     *
     * @return int
     */
    private static function getBitmask(): int
    {
        $enumType = static::class;

        if (!isset(self::$masks[$enumType])) {
            $mask = 0;
            foreach (static::values() as $flag) {
                if ($flag < 1 || ($flag > 1 && ($flag % 2) !== 0)) {
                    throw new LogicException(sprintf(
                        'Possible value %s of the enumeration "%s" is not a bit flag.',
                        json_encode($flag),
                        static::class
                    ));
                }
                $mask |= $flag;
            }
            self::$masks[$enumType] = $mask;
        }

        return self::$masks[$enumType];
    }

    /**
     * {@inheritdoc}
     *
     * @param string $separator A delimiter used between each bit flag's readable string
     */
    public function getReadable(string $separator = '; '): string
    {
        return static::readableFor($this->getValue(), $separator);
    }

    /**
     * Gets an array of bit flags of the value.
     *
     * @return array
     */
    public function getFlags(): array
    {
        if ($this->flags === null) {
            $this->flags = [];
            foreach (static::values() as $flag) {
                if ($this->hasFlag($flag)) {
                    $this->flags[] = $flag;
                }
            }
        }

        return $this->flags;
    }

    /**
     * Determines whether the specified flag is set in a numeric value.
     *
     * @param int $bitFlag The bit flag or bit flags
     *
     * @return bool True if the bit flag or bit flags are also set in the current instance; otherwise, false
     */
    public function hasFlag(int $bitFlag): bool
    {
        if ($bitFlag >= 1) {
            return $bitFlag === ($bitFlag & $this->value);
        }

        return false;
    }

    /**
     * Computes a new value with given flags, and returns the corresponding instance.
     *
     * @param int $flags The bit flag or bit flags
     *
     * @throws InvalidValueException When $flags is not acceptable for this enumeration type
     *
     * @return static The enum instance for computed value
     */
    public function withFlags(int $flags): self
    {
        if (!static::accepts($flags)) {
            throw new InvalidValueException($flags, static::class);
        }

        return static::get($this->value | $flags);
    }

    /**
     * Computes a new value without given flags, and returns the corresponding instance.
     *
     * @param int $flags The bit flag or bit flags
     *
     * @throws InvalidValueException When $flags is not acceptable for this enumeration type
     *
     * @return static The enum instance for computed value
     */
    public function withoutFlags(int $flags): self
    {
        if (!static::accepts($flags)) {
            throw new InvalidValueException($flags, static::class);
        }

        return static::get($this->value & ~$flags);
    }
}


1		<?php
2
3		/*
4		* This file is part of the "elao/enum" package.
5		*
6		* Copyright (C) 2016 Elao
7		*
8		* @author Elao <[email protected]>
9		*/
10
11		namespace Elao\Enum;
12
13		use Elao\Enum\Exception\InvalidValueException;
14		use Elao\Enum\Exception\LogicException;
15
16		abstract class FlaggedEnum extends ReadableEnum
17		{
18		const NONE = 0;
19
20		/** @var array */
21		private static $masks = [];
22
23		/** @var int[] */
24		protected $flags;
25
26		/**
27		* {@inheritdoc}
28		*/
29	30	public static function accepts($value): bool
30		{
31	30	if (!is_int($value)) {
32	1	return false;
33		}
34
35	29	if ($value === self::NONE) {
36	3	return true;
37		}
38
39	26	return $value === ($value & self::getBitmask());
40		}
41
42		/**
43		* {@inheritdoc}
44		*/
45		public static function readables(): array
46		{
47	8	$readables = [];
48		$constants = (new \ReflectionClass(static::class))->getConstants();
49	8	foreach (static::values() as $value) {
50		$constantName = array_search($value, $constants, true);
51		$readables[$value] = ucfirst(strtolower(str_replace('_', ' ', $constantName)));
52	8	}
53	1
54		return $readables;
55		}
56	7
57		/**
58	7	* {@inheritdoc}
59	5	*
60		* @param string $separator A delimiter used between each bit flag's readable string
61		*/
62	2	public static function readableFor($value, string $separator = '; '): string
63		{
64	2	if (!static::accepts($value)) {
65	2	throw new InvalidValueException($value, static::class);
66	2	}
67		if ($value === self::NONE) {
68		return static::readableForNone();
69		}
70	2
71		$humanRepresentations = static::readables();
72
73		if (isset($humanRepresentations[$value])) {
74		return $humanRepresentations[$value];
75		}
76
77		$parts = [];
78	1
79		foreach ($humanRepresentations as $flag => $readableValue) {
80	1	if ($flag === ($flag & $value)) {
81		$parts[] = $readableValue;
82		}
83		}
84
85		return implode($separator, $parts);
86		}
87
88		/**
89		* Gets the human representation for the none value.
90	26	*
91		* @return string
92	26	*/
93		protected static function readableForNone(): string
94	26	{
95	1	return 'None';
96	1	}
97	1
98	1	/**
99	1	* Gets an integer value of the possible flags for enumeration.
100		*
101	1	* @throws LogicException If the possibles values are not valid bit flags
102		*
103		* @return int
104	1	*/
105		private static function getBitmask(): int
106		{
107		$enumType = static::class;
108
109	25	if (!isset(self::$masks[$enumType])) {
110		$mask = 0;
111		foreach (static::values() as $flag) {
112		if ($flag < 1 \|\| ($flag > 1 && ($flag % 2) !== 0)) {
113		throw new LogicException(sprintf(
114		'Possible value %s of the enumeration "%s" is not a bit flag.',
115		json_encode($flag),
116		static::class
117	7	));
118		}
119	7	$mask \|= $flag;
120		}
121		self::$masks[$enumType] = $mask;
122		}
123
124		return self::$masks[$enumType];
125		}
126
127	13	/**
128		* {@inheritdoc}
129	13	*
130	7	* @param string $separator A delimiter used between each bit flag's readable string
131	7	*/
132	7	public function getReadable(string $separator = '; '): string
133	7	{
134		return static::readableFor($this->getValue(), $separator);
135		}
136
137		/**
138	13	* Gets an array of bit flags of the value.
139		*
140		* @return array
141		*/
142		public function getFlags(): array
143		{
144		if ($this->flags === null) {
145		$this->flags = [];
146		foreach (static::values() as $flag) {
147		if ($this->hasFlag($flag)) {
148	9	$this->flags[] = $flag;
149		}
150	9	}
151	9	}
152
153		return $this->flags;
154		}
155
156		/**
157		* Determines whether the specified flag is set in a numeric value.
158		*
159		* @param int $bitFlag The bit flag or bit flags
160		*
161		* @return bool True if the bit flag or bit flags are also set in the current instance; otherwise, false
162		*/
163		public function hasFlag(int $bitFlag): bool
164		{
165		if ($bitFlag >= 1) {
166	2	return $bitFlag === ($bitFlag & $this->value);
167		}
168	2
169	1	return false;
170		}
171
172	1	/**
173		* Computes a new value with given flags, and returns the corresponding instance.
174		*
175		* @param int $flags The bit flag or bit flags
176		*
177		* @throws InvalidValueException When $flags is not acceptable for this enumeration type
178		*
179		* @return static The enum instance for computed value
180		*/
181		public function withFlags(int $flags): self
182		{
183		if (!static::accepts($flags)) {
184	4	throw new InvalidValueException($flags, static::class);
185		}
186	4
187	1	return static::get($this->value \| $flags);
188		}
189
190	3	/**
191		* Computes a new value without given flags, and returns the corresponding instance.
192		*
193		* @param int $flags The bit flag or bit flags
194		*
195		* @throws InvalidValueException When $flags is not acceptable for this enumeration type
196		*
197		* @return static The enum instance for computed value
198		*/
199		public function withoutFlags(int $flags): self
200		{
201		if (!static::accepts($flags)) {
202		throw new InvalidValueException($flags, static::class);
203		}
204
205		return static::get($this->value & ~$flags);
206		}
207		}
208

Elao / PhpEnums

Pull Request — master (#31)

FlaggedEnum::withoutFlags() A

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