functions.php ➔ chain() - Code Metrics - Inspection of "Prefix instanceof statements (#168)" - humbug/php-scoper - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 5e59d9...c7bab4 )

by Théo

created 2018-02-20 23:51 UTC

functions.php ➔ chain() A

↳ Parent: Project

Complexity

Conditions	3
Paths	3

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	4
nc	3
nop	1
dl	0
loc	8
rs	9.4285
c	0
b	0
f	0

<?php

declare(strict_types=1);

/*
 * This file is part of the humbug/php-scoper package.
 *
 * Copyright (c) 2017 Théo FIDRY <[email protected]>,
 *                    Pádraic Brady <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Humbug\PhpScoper;

use Humbug\PhpScoper\Console\Application;
use Humbug\PhpScoper\Console\Command\AddPrefixCommand;
use Humbug\PhpScoper\Console\Command\InitCommand;
use Humbug\PhpScoper\Console\Command\SelfUpdateCommand;
use Humbug\PhpScoper\Scoper\Composer\InstalledPackagesScoper;
use Humbug\PhpScoper\Scoper\Composer\JsonFileScoper;
use Humbug\PhpScoper\Scoper\NullScoper;
use Humbug\PhpScoper\Scoper\PatchScoper;
use Humbug\PhpScoper\Scoper\PhpScoper;
use Humbug\PhpScoper\Scoper\TraverserFactory;
use Humbug\SelfUpdate\Exception\RuntimeException as SelfUpdateRuntimeException;
use Humbug\SelfUpdate\Updater;
use Iterator;
use PackageVersions\Versions;
use PhpParser\Node;
use PhpParser\Parser;
use PhpParser\ParserFactory;
use Roave\BetterReflection\Reflector\ClassReflector;
use Roave\BetterReflection\Reflector\FunctionReflector;
use Roave\BetterReflection\SourceLocator\Ast\Locator;
use Roave\BetterReflection\SourceLocator\Type\MemoizingSourceLocator;
use Roave\BetterReflection\SourceLocator\Type\PhpInternalSourceLocator;
use Symfony\Component\Console\Application as SymfonyApplication;
use Symfony\Component\Filesystem\Filesystem;

// TODO: register this file to the list of functions if possible to be autoloaded

/**
 * @private
 */
function create_application(): SymfonyApplication
{
    $app = new Application('PHP Scoper', get_version());

    $app->addCommands([
        new AddPrefixCommand(
            new Filesystem(),
            create_scoper()
        ),
        new InitCommand(),
    ]);

    if ('phar:' === substr(__FILE__, 0, 5)) {
        try {
            $updater = new Updater();
        } catch (SelfUpdateRuntimeException $e) {
            /* Allow E2E testing of unsigned phar */
            $updater = new Updater(null, false);
        }
        $app->add(
            new SelfUpdateCommand(
                $updater
            )
        );
    }

    return $app;
}

/**
 * @private
 */
function get_version(): string
{
    $rawVersion = Versions::getVersion('humbug/php-scoper');

    list($prettyVersion, $commitHash) = explode('@', $rawVersion);

    return (1 === preg_match('/9{7}/', $prettyVersion)) ? $commitHash : $prettyVersion;
}

/**
 * @private
 */
function create_scoper(): Scoper
{
    return new PatchScoper(
        new PhpScoper(
            create_parser(),
            new JsonFileScoper(
                new InstalledPackagesScoper(
                    new NullScoper()
                )
            ),
            new TraverserFactory(create_reflector())
        )
    );
}

/**
 * @private
 */
function create_parser(): Parser
{
    return (new ParserFactory())->create(ParserFactory::ONLY_PHP7);
}

function create_reflector(): Reflector
{
    $phpParser = create_parser();
    $astLocator = new Locator($phpParser);

    $sourceLocator = new MemoizingSourceLocator(
        new PhpInternalSourceLocator($astLocator)
    );
    $classReflector = new ClassReflector($sourceLocator);

    return new Reflector(
        $classReflector,
        new FunctionReflector($sourceLocator, $classReflector)
    );
}

/**
 * @param string[] $paths Absolute paths
 *
 * @return string
 */
function get_common_path(array $paths): string
{
    if (0 === count($paths)) {
        return '';
    }

    $lastOffset = 1;
    $common = DIRECTORY_SEPARATOR;

    while (false !== ($index = strpos($paths[0], DIRECTORY_SEPARATOR, $lastOffset))) {
        $dirLen = $index - $lastOffset + 1;
        $dir = substr($paths[0], $lastOffset, $dirLen);

        foreach ($paths as $path) {
            if (substr($path, $lastOffset, $dirLen) !== $dir) {
                if (0 < strlen($common) && DIRECTORY_SEPARATOR === $common[strlen($common) - 1]) {
                    $common = substr($common, 0, strlen($common) - 1);
                }

                return $common;
            }
        }

        $common .= $dir;
        $lastOffset = $index + 1;
    }

    $common = substr($common, 0, -1);

    if (0 < strlen($common) && DIRECTORY_SEPARATOR === $common[strlen($common) - 1]) {
        $common = substr($common, 0, strlen($common) - 1);
    }

    return $common;
}

/**
 * In-house clone functions. Does a partial clone that should be enough to provide the immutability required in some
 * places for the scoper. It however does not guarantee a deep cloning as would be horribly slow for no good reasons.
 * A better alternative would be to find a way to push immutability upstream in PHP-Parser directly.
 *
 * @param Node $node
 *
 * @return Node
 */
function clone_node(Node $node): Node
{
    $clone = deep_clone($node);

    foreach ($node->getAttributes() as $key => $attribute) {
        $clone->setAttribute($key, $attribute);
    }

    return $clone;
}

/**
 * @param mixed $node
 *
 * @return mixed
 *
 * @internal
 */
function deep_clone($node)
{
    if (is_array($node)) {
        return array_map(__FUNCTION__, $node);
    }

    if (null === $node || is_scalar($node)) {
        return $node;
    }

    return unserialize(serialize($node));
}

function chain(iterable ...$iterables): Iterator
{
    foreach ($iterables as $iterable) {
        foreach ($iterable as $key => $value) {
            yield $key => $value;
        }
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		/*
6		* This file is part of the humbug/php-scoper package.
7		*
8		* Copyright (c) 2017 Théo FIDRY <[email protected]>,
9		* Pádraic Brady <[email protected]>
10		*
11		* For the full copyright and license information, please view the LICENSE
12		* file that was distributed with this source code.
13		*/
14
15		namespace Humbug\PhpScoper;
16
17		use Humbug\PhpScoper\Console\Application;
18		use Humbug\PhpScoper\Console\Command\AddPrefixCommand;
19		use Humbug\PhpScoper\Console\Command\InitCommand;
20		use Humbug\PhpScoper\Console\Command\SelfUpdateCommand;
21		use Humbug\PhpScoper\Scoper\Composer\InstalledPackagesScoper;
22		use Humbug\PhpScoper\Scoper\Composer\JsonFileScoper;
23		use Humbug\PhpScoper\Scoper\NullScoper;
24		use Humbug\PhpScoper\Scoper\PatchScoper;
25		use Humbug\PhpScoper\Scoper\PhpScoper;
26		use Humbug\PhpScoper\Scoper\TraverserFactory;
27		use Humbug\SelfUpdate\Exception\RuntimeException as SelfUpdateRuntimeException;
28		use Humbug\SelfUpdate\Updater;
29		use Iterator;
30		use PackageVersions\Versions;
31		use PhpParser\Node;
32		use PhpParser\Parser;
33		use PhpParser\ParserFactory;
34		use Roave\BetterReflection\Reflector\ClassReflector;
35		use Roave\BetterReflection\Reflector\FunctionReflector;
36		use Roave\BetterReflection\SourceLocator\Ast\Locator;
37		use Roave\BetterReflection\SourceLocator\Type\MemoizingSourceLocator;
38		use Roave\BetterReflection\SourceLocator\Type\PhpInternalSourceLocator;
39		use Symfony\Component\Console\Application as SymfonyApplication;
40		use Symfony\Component\Filesystem\Filesystem;
41
42		// TODO: register this file to the list of functions if possible to be autoloaded
43
44		/**
45		* @private
46		*/
47		function create_application(): SymfonyApplication
48		{
49		$app = new Application('PHP Scoper', get_version());
50
51		$app->addCommands([
52		new AddPrefixCommand(
53		new Filesystem(),
54		create_scoper()
55		),
56		new InitCommand(),
57		]);
58
59		if ('phar:' === substr(__FILE__, 0, 5)) {
60		try {
61		$updater = new Updater();
62		} catch (SelfUpdateRuntimeException $e) {
63		/* Allow E2E testing of unsigned phar */
64		$updater = new Updater(null, false);
65		}
66		$app->add(
67		new SelfUpdateCommand(
68		$updater
69		)
70		);
71		}
72
73		return $app;
74		}
75
76		/**
77		* @private
78		*/
79		function get_version(): string
80		{
81		$rawVersion = Versions::getVersion('humbug/php-scoper');
82
83		list($prettyVersion, $commitHash) = explode('@', $rawVersion);
84
85		return (1 === preg_match('/9{7}/', $prettyVersion)) ? $commitHash : $prettyVersion;
86		}
87
88		/**
89		* @private
90		*/
91		function create_scoper(): Scoper
92		{
93		return new PatchScoper(
94		new PhpScoper(
95		create_parser(),
96		new JsonFileScoper(
97		new InstalledPackagesScoper(
98		new NullScoper()
99		)
100		),
101		new TraverserFactory(create_reflector())
102		)
103		);
104		}
105
106		/**
107		* @private
108		*/
109		function create_parser(): Parser
110		{
111		return (new ParserFactory())->create(ParserFactory::ONLY_PHP7);
112		}
113
114		function create_reflector(): Reflector
115		{
116		$phpParser = create_parser();
117		$astLocator = new Locator($phpParser);
118
119		$sourceLocator = new MemoizingSourceLocator(
120		new PhpInternalSourceLocator($astLocator)
121		);
122		$classReflector = new ClassReflector($sourceLocator);
123
124		return new Reflector(
125		$classReflector,
126		new FunctionReflector($sourceLocator, $classReflector)
127		);
128		}
129
130		/**
131		* @param string[] $paths Absolute paths
132		*
133		* @return string
134		*/
135		function get_common_path(array $paths): string
136		{
137		if (0 === count($paths)) {
138		return '';
139		}
140
141		$lastOffset = 1;
142		$common = DIRECTORY_SEPARATOR;
143
144		while (false !== ($index = strpos($paths[0], DIRECTORY_SEPARATOR, $lastOffset))) {
145		$dirLen = $index - $lastOffset + 1;
146		$dir = substr($paths[0], $lastOffset, $dirLen);
147
148		foreach ($paths as $path) {
149		if (substr($path, $lastOffset, $dirLen) !== $dir) {
150	View Code Duplication	if (0 < strlen($common) && DIRECTORY_SEPARATOR === $common[strlen($common) - 1]) {
151		$common = substr($common, 0, strlen($common) - 1);
152		}
153
154		return $common;
155		}
156		}
157
158		$common .= $dir;
159		$lastOffset = $index + 1;
160		}
161
162		$common = substr($common, 0, -1);
163
164	View Code Duplication	if (0 < strlen($common) && DIRECTORY_SEPARATOR === $common[strlen($common) - 1]) {
165		$common = substr($common, 0, strlen($common) - 1);
166		}
167
168		return $common;
169		}
170
171		/**
172		* In-house clone functions. Does a partial clone that should be enough to provide the immutability required in some
173		* places for the scoper. It however does not guarantee a deep cloning as would be horribly slow for no good reasons.
174		* A better alternative would be to find a way to push immutability upstream in PHP-Parser directly.
175		*
176		* @param Node $node
177		*
178		* @return Node
179		*/
180		function clone_node(Node $node): Node
181		{
182		$clone = deep_clone($node);
183
184		foreach ($node->getAttributes() as $key => $attribute) {
185		$clone->setAttribute($key, $attribute);
186		}
187
188		return $clone;
189		}
190
191		/**
192		* @param mixed $node
193		*
194		* @return mixed
195		*
196		* @internal
197		*/
198		function deep_clone($node)
199		{
200		if (is_array($node)) {
201		return array_map(__FUNCTION__, $node);
202		}
203
204		if (null === $node \|\| is_scalar($node)) {
205		return $node;
206		}
207
208		return unserialize(serialize($node));
209		}
210
211		function chain(iterable ...$iterables): Iterator
212		{
213		foreach ($iterables as $iterable) {
214		foreach ($iterable as $key => $value) {
215		yield $key => $value;
216		}
217		}
218		}
219

humbug / php-scoper

Push — master ( 5e59d9...c7bab4 )

functions.php ➔ chain() A

Complexity

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Duplication

Importance

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