JsDumper::getMasks() - Code Metrics - Inspection of "Allow to generate JavaScript enums from PHP" - Elao/PhpEnums - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#89)

by Maxime

created 2020-06-18 14:59 UTC

JsDumper::getMasks() B

↳ Parent: JsDumper

Complexity

Conditions	7
Paths	5

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	27
rs	8.5546
c	0
b	0
f	0
cc	7
nc	5
nop	1

<?php

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

namespace Elao\Enum\JsDumper;

use Elao\Enum\FlaggedEnum;
use Elao\Enum\ReadableEnumInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
 * @internal
 */
class JsDumper
{
    const DISCLAIMER = <<<JS
/*
 * This file was generated by the "elao/enum" PHP package.
 * The code inside belongs to you and can be altered, but no BC promise is guaranteed.
 */
JS;
    /** @var string */
    private $libPath;

    /** @var string|null */
    private $baseDir;

    /** @var Filesystem */
    private $fs;

    public function __construct(string $libPath, string $baseDir = null)
    {
        $this->fs = new Filesystem();
        $this->baseDir = $baseDir;
        $this->libPath = $this->normalizePath($libPath);
    }

    public function dumpLibrarySources()
    {
        $disclaimer = self::DISCLAIMER;
        $sourceCode = file_get_contents(__DIR__ . '/../../res/js/Enum.js');
        $this->baseDir !== null && $this->fs->mkdir($this->baseDir);
        $this->fs->dumpFile($this->libPath, "$disclaimer\n\n$sourceCode");
    }

    /**
     * @param class-string<EnumInterface> $enumFqcn
     */
    public function dumpEnumToFile(string $enumFqcn, string $path)
    {
        !file_exists($this->libPath) && $this->dumpLibrarySources();
        $this->baseDir !== null && $this->fs->mkdir($this->baseDir);

        $path = $this->normalizePath($path);

        $disclaimer = self::DISCLAIMER;
        $this->fs->dumpFile($path, "$disclaimer\n\n");

        $code = '';
        $code .= $this->dumpImports($path, $enumFqcn);
        $code .= $this->dumpEnumClass($enumFqcn);
        // End file with export
        $code .= "\nexport default {$this->getShortName($enumFqcn)}\n";

        // Dump to file:
        $this->fs->appendToFile($path, $code);
    }

    /**
     * @param class-string<EnumInterface> $enumFqcn
     */
    public function dumpEnumClass(string $enumFqcn): string
    {
        $code = '';
        $code .= $this->startClass($enumFqcn);
        $code .= $this->generateEnumerableValues($enumFqcn);
        $code .= $this->generateMasks($enumFqcn);
        $code .= $this->generateReadables($enumFqcn);
        $code .= "}\n"; // End class

        return $code;
    }

    private function dumpImports(string $path, string $enumFqcn): string
    {
        $relativeLibPath = preg_replace('#.js$#', '', rtrim(
            $this->fs->makePathRelative(realpath($this->libPath), realpath(\dirname($path))),
            DIRECTORY_SEPARATOR
        ));

        if (is_a($enumFqcn, FlaggedEnum::class, true)) {
            return "import { FlaggedEnum } from '$relativeLibPath';\n\n";
        }

        if (is_a($enumFqcn, ReadableEnumInterface::class, true)) {
            return "import { ReadableEnum } from '$relativeLibPath';\n\n";
        }

        return "import Enum from '$relativeLibPath';\n\n";
    }

    private function startClass(string $enumFqcn): string
    {
        $shortName = $this->getShortName($enumFqcn);
        $baseClass = 'Enum';

        if (is_a($enumFqcn, FlaggedEnum::class, true)) {
            $baseClass = 'FlaggedEnum';
        } elseif (is_a($enumFqcn, ReadableEnumInterface::class, true)) {
            $baseClass = 'ReadableEnum';
        }

        return "class $shortName extends $baseClass {\n";
    }

    private function generateEnumerableValues(string $enumFqcn): string
    {
        $code = '';
        foreach ($this->getEnumerableValues($enumFqcn) as $constant => $value) {

            $jsValue = \is_string($value) ? "'$value'" : $value;
            $code .= "  static $constant = $jsValue\n";
        }

        return $code;
    }

    private function generateMasks(string $enumFqcn)
    {
        if (!is_a($enumFqcn, FlaggedEnum::class, true)) {
            return '';
        }

        $code = "\n  // Named masks\n";
        foreach ($this->getMasks($enumFqcn) as $constant => $value) {

            $jsValue = \is_string($value) ? "'$value'" : $value;
            $code .= "  static $constant = $jsValue\n";
        }

        return $code;
    }

    private function generateReadables(string $enumFqcn): string
    {
        if (!is_a($enumFqcn, ReadableEnumInterface::class, true)) {
            return '';
        }

        $shortName = $this->getShortName($enumFqcn);
        // Get readable entries
        $readablesCode = '';
        $readables = $enumFqcn::readables();

        // Generate all values
        foreach ($this->getEnumerableValues($enumFqcn) as $constant => $value) {

            if (!$readable = $readables[$value] ?? false) {
                continue;
            }

            $readablesCode .=
                    <<<JS

      [{$shortName}.{$constant}]: '{$readable}',
JS;
        }

        if (is_a($enumFqcn, FlaggedEnum::class, true)) {
            $readablesCode .= "\n\n      // Named masks";
            foreach ($this->getMasks($enumFqcn) as $constant => $value) {

                if (!$readable = $readables[$value] ?? false) {
                    continue;
                }

                $readablesCode .=
                    <<<JS

      [{$shortName}.{$constant}]: '{$readable}',
JS;
            }
        }

        // Generate readables method:
        return <<<JS

  static get readables() {
    return {{$readablesCode}
    };
  }

JS;
    }

    /**
     * @param class-string<EnumInterface> $enumFqcn
     */
    private function getEnumerableValues(string $enumFqcn): array
    {
        $constants = $this->getConstants($enumFqcn);

        $enumerableValues = [];
        foreach ($constants as $constant) {
            $value = \constant("$enumFqcn::$constant");

            if (is_a($enumFqcn, FlaggedEnum::class, true)) {
                // Continue if not a bit flag:
                if (!(\is_int($value) && 0 === ($value & $value - 1) && $value > 0)) {
                    continue;
                }
            } elseif (!\is_int($value) && !\is_string($value)) {
                // Continue if not an int or string:
                continue;
            }

            $enumerableValues[$constant] = $value;
        }

        return $enumerableValues;
    }

    /**
     * @param class-string<FlaggedEnum> $enumFqcn
     */
    private function getMasks(string $enumFqcn): array
    {
        if (!is_a($enumFqcn, FlaggedEnum::class, true)) {
            return [];
        }

        $constants = $this->getConstants($enumFqcn);

        $masks = [];
        foreach ($constants as $constant) {
            $value = \constant("$enumFqcn::$constant");

            // Continue if it's not part of the flagged enum bitmask:
            if (!\is_int($value) || $value <= 0 || !$enumFqcn::accepts($value)) {
                continue;
            }

            // Continue it's a single bit flag:
            if (\in_array($value, $enumFqcn::values(), true)) {
                continue;
            }

            $masks[$constant] = $value;
        }

        return $masks;
    }

    /**
     * @param class-string<EnumInterface> $enumFqcn
     */
    private function getShortName(string $enumFqcn): string
    {
        static $cache = [];

        return $cache[$enumFqcn] = $cache[$enumFqcn] ?? (new \ReflectionClass($enumFqcn))->getShortName();
    }

    /**
     * @param class-string<EnumInterface> $enumFqcn
     */
    private function getConstants(string $enumFqcn): array
    {
        $r = new \ReflectionClass($enumFqcn);
        $constants = array_filter(
            $r->getConstants(),
            static function (string $k) use ($r, $enumFqcn) {

                if (PHP_VERSION_ID >= 70100) {
                    // ReflectionClass::getReflectionConstant() is only available since PHP 7.1
                    $rConstant = $r->getReflectionConstant($k);
                    $public = $rConstant->isPublic();
                    $value = $rConstant->getValue();
                } else {
                    $public = true;
                    $value = \constant("{$r->getName()}::$k");

                }

                // Only keep public constants, for which value matches enumerable values set:
                return $public && $enumFqcn::accepts($value);
            },
            ARRAY_FILTER_USE_KEY
        );

        $constants = array_flip($constants);

        return $constants;
    }

    public function normalizePath(string $path): string
    {
        if (null === $this->baseDir) {
            return $path;
        }

        if ($this->fs->isAbsolutePath($path)) {
            return $path;
        }

        if (0 === strpos($path, './')) {
            return $path;
        }

        return rtrim($this->baseDir, DIRECTORY_SEPARATOR) . '/' . $path;
    }
}


1		<?php
2
3		/*
4		* This file is part of the "elao/enum" package.
5		*
6		* Copyright (C) Elao
7		*
8		* @author Elao <[email protected]>
9		*/
10
11		namespace Elao\Enum\JsDumper;
12
13		use Elao\Enum\FlaggedEnum;
14		use Elao\Enum\ReadableEnumInterface;
15		use Symfony\Component\Filesystem\Filesystem;
16
17		/**
18		* @internal
19		*/
20		class JsDumper
21		{
22		const DISCLAIMER = <<<JS
23		/*
24		* This file was generated by the "elao/enum" PHP package.
25		* The code inside belongs to you and can be altered, but no BC promise is guaranteed.
26		*/
27		JS;
28		/** @var string */
29		private $libPath;
30
31		/** @var string\|null */
32		private $baseDir;
33
34		/** @var Filesystem */
35		private $fs;
36
37		public function __construct(string $libPath, string $baseDir = null)
38		{
39		$this->fs = new Filesystem();
40		$this->baseDir = $baseDir;
41		$this->libPath = $this->normalizePath($libPath);
42		}
43
44		public function dumpLibrarySources()
45		{
46		$disclaimer = self::DISCLAIMER;
47		$sourceCode = file_get_contents(__DIR__ . '/../../res/js/Enum.js');
48		$this->baseDir !== null && $this->fs->mkdir($this->baseDir);
49		$this->fs->dumpFile($this->libPath, "$disclaimer\n\n$sourceCode");
50		}
51
52		/**
53		* @param class-string<EnumInterface> $enumFqcn
54		*/
55		public function dumpEnumToFile(string $enumFqcn, string $path)
56		{
57		!file_exists($this->libPath) && $this->dumpLibrarySources();
58		$this->baseDir !== null && $this->fs->mkdir($this->baseDir);
59
60		$path = $this->normalizePath($path);
61
62		$disclaimer = self::DISCLAIMER;
63		$this->fs->dumpFile($path, "$disclaimer\n\n");
64
65		$code = '';
66		$code .= $this->dumpImports($path, $enumFqcn);
67		$code .= $this->dumpEnumClass($enumFqcn);
68		// End file with export
69		$code .= "\nexport default {$this->getShortName($enumFqcn)}\n";
70
71		// Dump to file:
72		$this->fs->appendToFile($path, $code);
73		}
74
75		/**
76		* @param class-string<EnumInterface> $enumFqcn
77		*/
78		public function dumpEnumClass(string $enumFqcn): string
79		{
80		$code = '';
81		$code .= $this->startClass($enumFqcn);
82		$code .= $this->generateEnumerableValues($enumFqcn);
83		$code .= $this->generateMasks($enumFqcn);
84		$code .= $this->generateReadables($enumFqcn);
85		$code .= "}\n"; // End class
86
87		return $code;
88		}
89
90		private function dumpImports(string $path, string $enumFqcn): string
91		{
92		$relativeLibPath = preg_replace('#.js$#', '', rtrim(
93		$this->fs->makePathRelative(realpath($this->libPath), realpath(\dirname($path))),
94		DIRECTORY_SEPARATOR
95		));
96
97		if (is_a($enumFqcn, FlaggedEnum::class, true)) {
98		return "import { FlaggedEnum } from '$relativeLibPath';\n\n";
99		}
100
101		if (is_a($enumFqcn, ReadableEnumInterface::class, true)) {
102		return "import { ReadableEnum } from '$relativeLibPath';\n\n";
103		}
104
105		return "import Enum from '$relativeLibPath';\n\n";
106		}
107
108		private function startClass(string $enumFqcn): string
109		{
110		$shortName = $this->getShortName($enumFqcn);
111		$baseClass = 'Enum';
112
113		if (is_a($enumFqcn, FlaggedEnum::class, true)) {
114		$baseClass = 'FlaggedEnum';
115		} elseif (is_a($enumFqcn, ReadableEnumInterface::class, true)) {
116		$baseClass = 'ReadableEnum';
117		}
118
119		return "class $shortName extends $baseClass {\n";
120		}
121
122		private function generateEnumerableValues(string $enumFqcn): string
123		{
124		$code = '';
125	View Code Duplication	foreach ($this->getEnumerableValues($enumFqcn) as $constant => $value) {
		0 ignored issues – show Duplication introduced 2020-06-08 15:38 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
126		$jsValue = \is_string($value) ? "'$value'" : $value;
127		$code .= " static $constant = $jsValue\n";
128		}
129
130		return $code;
131		}
132
133		private function generateMasks(string $enumFqcn)
134		{
135		if (!is_a($enumFqcn, FlaggedEnum::class, true)) {
136		return '';
137		}
138
139		$code = "\n // Named masks\n";
140	View Code Duplication	foreach ($this->getMasks($enumFqcn) as $constant => $value) {
		0 ignored issues – show Duplication introduced 2020-06-08 15:38 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
141		$jsValue = \is_string($value) ? "'$value'" : $value;
142		$code .= " static $constant = $jsValue\n";
143		}
144
145		return $code;
146		}
147
148		private function generateReadables(string $enumFqcn): string
149		{
150		if (!is_a($enumFqcn, ReadableEnumInterface::class, true)) {
151		return '';
152		}
153
154		$shortName = $this->getShortName($enumFqcn);
155		// Get readable entries
156		$readablesCode = '';
157		$readables = $enumFqcn::readables();
158
159		// Generate all values
160	View Code Duplication	foreach ($this->getEnumerableValues($enumFqcn) as $constant => $value) {
		0 ignored issues – show Duplication introduced 2020-06-08 15:38 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
161		if (!$readable = $readables[$value] ?? false) {
162		continue;
163		}
164
165		$readablesCode .=
166		<<<JS
167
168		[{$shortName}.{$constant}]: '{$readable}',
169		JS;
170		}
171
172		if (is_a($enumFqcn, FlaggedEnum::class, true)) {
173		$readablesCode .= "\n\n // Named masks";
174	View Code Duplication	foreach ($this->getMasks($enumFqcn) as $constant => $value) {
		0 ignored issues – show Duplication introduced 2020-06-08 15:38 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
175		if (!$readable = $readables[$value] ?? false) {
176		continue;
177		}
178
179		$readablesCode .=
180		<<<JS
181
182		[{$shortName}.{$constant}]: '{$readable}',
183		JS;
184		}
185		}
186
187		// Generate readables method:
188		return <<<JS
189
190		static get readables() {
191		return {{$readablesCode}
192		};
193		}
194
195		JS;
196		}
197
198		/**
199		* @param class-string<EnumInterface> $enumFqcn
200		*/
201		private function getEnumerableValues(string $enumFqcn): array
202		{
203		$constants = $this->getConstants($enumFqcn);
204
205		$enumerableValues = [];
206		foreach ($constants as $constant) {
207		$value = \constant("$enumFqcn::$constant");
208
209		if (is_a($enumFqcn, FlaggedEnum::class, true)) {
210		// Continue if not a bit flag:
211		if (!(\is_int($value) && 0 === ($value & $value - 1) && $value > 0)) {
212		continue;
213		}
214		} elseif (!\is_int($value) && !\is_string($value)) {
215		// Continue if not an int or string:
216		continue;
217		}
218
219		$enumerableValues[$constant] = $value;
220		}
221
222		return $enumerableValues;
223		}
224
225		/**
226		* @param class-string<FlaggedEnum> $enumFqcn
227		*/
228		private function getMasks(string $enumFqcn): array
229		{
230		if (!is_a($enumFqcn, FlaggedEnum::class, true)) {
231		return [];
232		}
233
234		$constants = $this->getConstants($enumFqcn);
235
236		$masks = [];
237		foreach ($constants as $constant) {
238		$value = \constant("$enumFqcn::$constant");
239
240		// Continue if it's not part of the flagged enum bitmask:
241		if (!\is_int($value) \|\| $value <= 0 \|\| !$enumFqcn::accepts($value)) {
242		continue;
243		}
244
245		// Continue it's a single bit flag:
246		if (\in_array($value, $enumFqcn::values(), true)) {
247		continue;
248		}
249
250		$masks[$constant] = $value;
251		}
252
253		return $masks;
254		}
255
256		/**
257		* @param class-string<EnumInterface> $enumFqcn
258		*/
259		private function getShortName(string $enumFqcn): string
260		{
261		static $cache = [];
262
263		return $cache[$enumFqcn] = $cache[$enumFqcn] ?? (new \ReflectionClass($enumFqcn))->getShortName();
264		}
265
266		/**
267		* @param class-string<EnumInterface> $enumFqcn
268		*/
269		private function getConstants(string $enumFqcn): array
270		{
271		$r = new \ReflectionClass($enumFqcn);
272		$constants = array_filter(
273		$r->getConstants(),
274	View Code Duplication	static function (string $k) use ($r, $enumFqcn) {
		0 ignored issues – show Duplication introduced 2020-06-08 15:38 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
275		if (PHP_VERSION_ID >= 70100) {
276		// ReflectionClass::getReflectionConstant() is only available since PHP 7.1
277		$rConstant = $r->getReflectionConstant($k);
278		$public = $rConstant->isPublic();
279		$value = $rConstant->getValue();
280		} else {
281		$public = true;
282		$value = \constant("{$r->getName()}::$k");
		0 ignored issues – show Bug introduced 2020-06-08 15:38 UTC by Report Bug Copy Issue Report Consider using `$r->name`. There is an issue with `getName()` and APC-enabled PHP versions. Loading history...
283		}
284
285		// Only keep public constants, for which value matches enumerable values set:
286		return $public && $enumFqcn::accepts($value);
287		},
288		ARRAY_FILTER_USE_KEY
289		);
290
291		$constants = array_flip($constants);
292
293		return $constants;
294		}
295
296		public function normalizePath(string $path): string
297		{
298		if (null === $this->baseDir) {
299		return $path;
300		}
301
302		if ($this->fs->isAbsolutePath($path)) {
303		return $path;
304		}
305
306		if (0 === strpos($path, './')) {
307		return $path;
308		}
309
310		return rtrim($this->baseDir, DIRECTORY_SEPARATOR) . '/' . $path;
311		}
312		}
313

Elao / PhpEnums

Pull Request — master (#89)

JsDumper::getMasks() B

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

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