RouteCompiler::filterVariableName() - Code Metrics - Inspection of "Performance Update" - divineniiquaye/flight-routing - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Pull Request — master (#16)

by Divine Niiquaye

created 2021-07-29 08:44 UTC

RouteCompiler::filterVariableName() A

↳ Parent: RouteCompiler

Complexity

Conditions	3
Paths	3

Size

Total Lines	17
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	3
eloc	10
c	1
b	0
f	0
nc	3
nop	2
dl	0
loc	17
rs	9.9332

<?php

declare(strict_types=1);

/*
 * This file is part of Flight Routing.
 *
 * PHP version 7.1 and above required
 *
 * @author    Divine Niiquaye Ibok <[email protected]>
 * @copyright 2019 Biurad Group (https://biurad.com/)
 * @license   https://opensource.org/licenses/BSD-3-Clause License
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Flight\Routing;

use Flight\Routing\{GeneratedUri, Route};
.
|-- OtherDir
|   |-- Bar.php
|   `-- Foo.php
`-- SomeDir
    `-- Foo.php
use Flight\Routing\Exceptions\{UriHandlerException, UrlGenerationException};
use Flight\Routing\Interfaces\RouteCompilerInterface;

/**
 * RouteCompiler compiles Route instances to regex.
 *
 * provides ability to match and generate uris based on given parameters.
 *
 * @final This class is final and recommended not to be extended unless special cases
 *
 * @author Divine Niiquaye Ibok <[email protected]>
 */
class RouteCompiler implements RouteCompilerInterface
{
    private const DEFAULT_SEGMENT = '[^\/]+';

    /**
     * This string defines the characters that are automatically considered separators in front of
     * optional placeholders (with default and no static text following). Such a single separator
     * can be left out together with the optional placeholder from matching and generating URLs.
     */
    private const PATTERN_REPLACES = ['/' => '\\/', '/[' => '\/?(?:', '[' => '(?:', ']' => ')?', '.' => '\.'];

    private const SEGMENT_REPLACES = ['/' => '\\/', '.' => '\.'];

    /**
     * This regex is used to match a certain rule of pattern to be used for routing.
     *
     * List of string patterns that regex matches:
     * - /{var} - A required variable pattern
     * - /[{var}] - An optional variable pattern
     * - /foo[/{var}] - A path with an optional sub variable pattern
     * - /foo[/{var}[.{format}]] - A path with optional nested variables
     * - /{var:[a-z]+} - A required variable with lowercase rule
     * - /{var=foo} - A required variable with default value
     * - /{var}[.{format:(html|php)=html}] - A required variable with an optional variable, a rule & default
     */
    private const COMPILER_REGEX = '~\\{(\\w+)(?:\\:([^{}=]+(?:\\{[\\w,^{}]+)?))?(?:\\=((?2)))?\\}~i';

    /**
     * A matching requirement helper, to ease matching route pattern when found.
     */
    private const SEGMENT_TYPES = [
        'int' => '\d+',
        'lower' => '[a-z]+',
        'upper' => '[A-Z]+',
        'alpha' => '[A-Za-z]+',
        'alnum' => '[A-Za-z0-9]+',
        'year' => '[12][0-9]{3}',
        'month' => '0[1-9]|1[012]+',
        'day' => '0[1-9]|[12][0-9]|3[01]+',
        'uuid' => '0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}',
    ];

    /**
     * A helper in reversing route pattern to URI.
     */
    private const URI_FIXERS = [
        '[]' => '',
        '[/]' => '',
        '[' => '',
        ']' => '',
        '://' => '://',
        '//' => '/',
        '/..' => '/%2E%2E',
        '/.' => '/%2E',
    ];

    /**
     * The maximum supported length of a PCRE subpattern name
     * http://pcre.org/current/doc/html/pcre2pattern.html#SEC16.
     *
     * @internal
     */
    private const VARIABLE_MAXIMUM_LENGTH = 32;

    /**
     * {@inheritdoc}
     */
    public function compile(Route $route): array
    {
        $hostVariables = $hostsRegex = [];
        $requirements = $route->get('patterns');

        // Strip supported browser prefix of $routePath ...
        $routePath = \rtrim($routePath = $route->get('path'), Route::URL_PREFIX_SLASHES[$routePath[-1]] ?? '/');

        if (!empty($routePath) && '/' === $routePath[0]) {
            $routePath = \substr($routePath, 1);
        }

        foreach ($route->get('domain') as $host) {
            [$hostRegex, $hostVariable] = self::compilePattern($host, false, $requirements);

            $hostVariables += $hostVariable;
            $hostsRegex[] = $hostRegex;
        }

        if (\str_contains($routePath, '{')) {
            [$pathRegex, $pathVariables] = self::compilePattern('/' . $routePath, false, $requirements);
            $variables = empty($hostVariables) ? $pathVariables : $hostVariables += $pathVariables;
        }

        return [$pathRegex ?? '/' . $routePath, $hostsRegex, $variables ?? $hostVariables];
    }

    /**
     * {@inheritdoc}
     */
    public function generateUri(Route $route, array $parameters, array $defaults = []): GeneratedUri
    {
        [$pathRegex, $pathVariables] = self::compilePattern(\ltrim($route->get('path'), '/'), true);

        $pathRegex = '/' . \stripslashes(\str_replace('?', '', $pathRegex));
        $createUri = new GeneratedUri(self::interpolate($pathRegex, $parameters, $defaults, $pathVariables));

        foreach ($route->get('domain') as $host) {
            $compiledHost = self::compilePattern($host, true);

            if (!empty($compiledHost)) {
                [$hostRegex, $hostVariables] = $compiledHost;

                break;
            }
        }

        if (!empty($schemes = $route->get('schemes'))) {
            $createUri->withScheme(\in_array('https', $schemes, true) ? 'https' : \end($schemes) ?? 'http');

            if (!isset($hostRegex)) {
                $createUri->withHost($_SERVER['HTTP_HOST'] ?? '');
            }
        }

        if (isset($hostRegex)) {
            $createUri->withHost(self::interpolate($hostRegex, $parameters, $defaults, $hostVariables));

        }

        return $createUri;
    }

    /**
     * Check for mandatory parameters then interpolate $uriRoute with given $parameters.
     *
     * @param array<int|string,mixed> $parameters
     */
    private static function interpolate(string $uriRoute, array $parameters, array $defaults, array $allowed): string
    {
        \preg_match_all('#(?:\[)?\<(\w+).*?\>(?:\])?#', $uriRoute, $paramVars, \PREG_SET_ORDER);

        foreach ($paramVars as $offset => [$type, $var]) {
            if ('[' === $type[0]) {
                $defaults[$var] = null;

                continue;
            }

            if (isset($parameters[$offset])) {
                $defaults[$var] = $parameters[$offset];
                unset($parameters[$offset]);
            }
        }

        // Fetch and merge all possible parameters + route defaults ...
        $parameters += $defaults;

        // all params must be given
        if ($diff = \array_diff_key($allowed, $parameters)) {
            throw new UrlGenerationException(\sprintf('Some mandatory parameters are missing ("%s") to generate a URL for route path "%s".', \implode('", "', \array_keys($diff)), $uriRoute));
        }

        $replaces = self::URI_FIXERS;

        foreach ($parameters as $key => $value) {
            $replaces["<{$key}>"] = (\is_array($value) || $value instanceof \Closure) ? '' : $value;
        }

        return \strtr($uriRoute, $replaces);
    }

    private static function sanitizeRequirement(string $key, ?string $regex): string
    {
        if (!empty($regex)) {
            if ('^' === $regex[0]) {
                $regex = \substr($regex, 1);
            } elseif (0 === \strpos($regex, '\\A')) {
                $regex = \substr($regex, 2);
            }

            if ('$' === $regex[-1]) {
                $regex = \substr($regex, 0, -1);
            } elseif (\strlen($regex) - 2 === \strpos($regex, '\\z')) {
                $regex = \substr($regex, 0, -2);
            }
        }

        if ('' === $regex) {
            throw new \InvalidArgumentException(\sprintf('Routing requirement for "%s" cannot be empty.', $key));
        }

        return null !== $regex ? \strtr($regex, self::SEGMENT_REPLACES) : self::DEFAULT_SEGMENT;
    }

    /**
     * @param array<string,string|string[]> $requirements
     *
     * @throws UriHandlerException if a variable name starts with a digit or
     *                             if it is too long to be successfully used as a PCRE subpattern or
     *                             if a variable is referenced more than once
     *
     * @return array<string,mixed>
     */
    private static function compilePattern(string $uriPattern, bool $reversed = false, array $requirements = []): array
    {
        $variables = $replaces = [];

        // correct [/ first occurrence]
        if (0 === \strpos($uriPattern, '[/')) {
            $uriPattern = '[' . \substr($uriPattern, 3);
        }

        // Match all variables enclosed in "{}" and iterate over them...
        \preg_match_all(self::COMPILER_REGEX, $uriPattern, $matches, \PREG_SET_ORDER | \PREG_UNMATCHED_AS_NULL);

        foreach ($matches as [$placeholder, $varName, $segment, $default]) {
            // Filter variable name to meet requirement
            self::filterVariableName($varName, $uriPattern);

            if (\array_key_exists($varName, $variables)) {
                throw new UriHandlerException(\sprintf('Route pattern "%s" cannot reference variable name "%s" more than once.', $uriPattern, $varName));
            }

            $variables[$varName] = $default;
            $replaces[$placeholder] = !$reversed ? '(?P<' . $varName . '>' . (self::SEGMENT_TYPES[$segment] ?? $segment ?? self::prepareSegment($varName, $requirements)) . ')' : "<$varName>";
        }

        return [\strtr($uriPattern, !$reversed ? self::PATTERN_REPLACES + $replaces : $replaces), $variables];
    }

    /**
     * Prevent variables with same name used more than once.
     */
    private static function filterVariableName(string $varName, string $pattern): void
    {
        // A PCRE subpattern name must start with a non-digit. Also a PHP variable cannot start with a digit so the
        // variable would not be usable as a Controller action argument.
        if (1 === \preg_match('/^\d/', $varName)) {
            throw new UriHandlerException(
                \sprintf('Variable name "%s" cannot start with a digit in route pattern "%s". Use a different name.', $varName, $pattern)
            );
        }

        if (\strlen($varName) > self::VARIABLE_MAXIMUM_LENGTH) {
            throw new UriHandlerException(
                \sprintf(
                    'Variable name "%s" cannot be longer than %s characters in route pattern "%s".',
                    $varName,
                    self::VARIABLE_MAXIMUM_LENGTH,
                    $pattern
                )
            );
        }
    }

    /**
     * Prepares segment pattern with given constrains.
     *
     * @param array<string,mixed> $requirements
     */
    private static function prepareSegment(string $name, array $requirements): string
    {
        $segment = $requirements[$name] ?? null;

        if (!\is_array($segment)) {
            return self::sanitizeRequirement($name, $segment);
        }

        return \implode('|', \array_map([__CLASS__, 'sanitizeRequirement'], $segment));
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			/*
6			* This file is part of Flight Routing.
7			*
8			* PHP version 7.1 and above required
9			*
10			* @author Divine Niiquaye Ibok <[email protected]>
11			* @copyright 2019 Biurad Group (https://biurad.com/)
12			* @license https://opensource.org/licenses/BSD-3-Clause License
13			*
14			* For the full copyright and license information, please view the LICENSE
15			* file that was distributed with this source code.
16			*/
17
18			namespace Flight\Routing;
19
20			use Flight\Routing\{GeneratedUri, Route};
			0 ignored issues – show Bug introduced 2021-06-30 09:51 UTC by Report Bug Copy Issue Report This use statement conflicts with another class in this namespace, `Flight\Routing\GeneratedUri`. Consider defining an alias. Let?s assume that you have a directory layout like this: . \|-- OtherDir \| \|-- Bar.php \| `-- Foo.php `-- SomeDir `-- Foo.php and let?s assume the following content of `Bar.php`: // Bar.php namespace OtherDir; use SomeDir\Foo; // This now conflicts the class OtherDir\Foo If both files `OtherDir/Foo.php` and `SomeDir/Foo.php` are loaded in the same runtime, you will see a PHP error such as the following: PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php However, as `OtherDir/Foo.php` does not necessarily have to be loaded and the error is only triggered if it is loaded before `OtherDir/Bar.php`, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: // Bar.php namespace OtherDir; use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore. Loading history... Bug introduced 2021-06-30 09:51 UTC by Report Bug Copy Issue Report This use statement conflicts with another class in this namespace, `Flight\Routing\Route`. Consider defining an alias. Let?s assume that you have a directory layout like this: . \|-- OtherDir \| \|-- Bar.php \| `-- Foo.php `-- SomeDir `-- Foo.php and let?s assume the following content of `Bar.php`: // Bar.php namespace OtherDir; use SomeDir\Foo; // This now conflicts the class OtherDir\Foo If both files `OtherDir/Foo.php` and `SomeDir/Foo.php` are loaded in the same runtime, you will see a PHP error such as the following: PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php However, as `OtherDir/Foo.php` does not necessarily have to be loaded and the error is only triggered if it is loaded before `OtherDir/Bar.php`, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: // Bar.php namespace OtherDir; use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore. Loading history...
21			use Flight\Routing\Exceptions\{UriHandlerException, UrlGenerationException};
22			use Flight\Routing\Interfaces\RouteCompilerInterface;
23
24			/**
25			* RouteCompiler compiles Route instances to regex.
26			*
27			* provides ability to match and generate uris based on given parameters.
28			*
29			* @final This class is final and recommended not to be extended unless special cases
30			*
31			* @author Divine Niiquaye Ibok <[email protected]>
32			*/
33			class RouteCompiler implements RouteCompilerInterface
34			{
35			private const DEFAULT_SEGMENT = '[^\/]+';
36
37			/**
38			* This string defines the characters that are automatically considered separators in front of
39			* optional placeholders (with default and no static text following). Such a single separator
40			* can be left out together with the optional placeholder from matching and generating URLs.
41			*/
42			private const PATTERN_REPLACES = ['/' => '\\/', '/[' => '\/?(?:', '[' => '(?:', ']' => ')?', '.' => '\.'];
43
44			private const SEGMENT_REPLACES = ['/' => '\\/', '.' => '\.'];
45
46			/**
47			* This regex is used to match a certain rule of pattern to be used for routing.
48			*
49			* List of string patterns that regex matches:
50			* - /{var} - A required variable pattern
51			* - /[{var}] - An optional variable pattern
52			* - /foo[/{var}] - A path with an optional sub variable pattern
53			* - /foo[/{var}[.{format}]] - A path with optional nested variables
54			* - /{var:[a-z]+} - A required variable with lowercase rule
55			* - /{var=foo} - A required variable with default value
56			* - /{var}[.{format:(html\|php)=html}] - A required variable with an optional variable, a rule & default
57			*/
58			private const COMPILER_REGEX = '~\\{(\\w+)(?:\\:([^{}=]+(?:\\{[\\w,^{}]+)?))?(?:\\=((?2)))?\\}~i';
59
60			/**
61			* A matching requirement helper, to ease matching route pattern when found.
62			*/
63			private const SEGMENT_TYPES = [
64			'int' => '\d+',
65			'lower' => '[a-z]+',
66			'upper' => '[A-Z]+',
67			'alpha' => '[A-Za-z]+',
68			'alnum' => '[A-Za-z0-9]+',
69			'year' => '[12][0-9]{3}',
70			'month' => '0[1-9]\|1[012]+',
71			'day' => '0[1-9]\|[12][0-9]\|3[01]+',
72			'uuid' => '0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}',
73			];
74
75			/**
76			* A helper in reversing route pattern to URI.
77			*/
78			private const URI_FIXERS = [
79			'[]' => '',
80			'[/]' => '',
81			'[' => '',
82			']' => '',
83			'://' => '://',
84			'//' => '/',
85			'/..' => '/%2E%2E',
86			'/.' => '/%2E',
87			];
88
89			/**
90			* The maximum supported length of a PCRE subpattern name
91			* http://pcre.org/current/doc/html/pcre2pattern.html#SEC16.
92			*
93			* @internal
94			*/
95			private const VARIABLE_MAXIMUM_LENGTH = 32;
96
97			/**
98			* {@inheritdoc}
99			*/
100			public function compile(Route $route): array
101			{
102			$hostVariables = $hostsRegex = [];
103			$requirements = $route->get('patterns');
104
105			// Strip supported browser prefix of $routePath ...
106			$routePath = \rtrim($routePath = $route->get('path'), Route::URL_PREFIX_SLASHES[$routePath[-1]] ?? '/');
107
108			if (!empty($routePath) && '/' === $routePath[0]) {
109			$routePath = \substr($routePath, 1);
110			}
111
112			foreach ($route->get('domain') as $host) {
113			[$hostRegex, $hostVariable] = self::compilePattern($host, false, $requirements);
114
115			$hostVariables += $hostVariable;
116			$hostsRegex[] = $hostRegex;
117			}
118
119			if (\str_contains($routePath, '{')) {
120			[$pathRegex, $pathVariables] = self::compilePattern('/' . $routePath, false, $requirements);
121			$variables = empty($hostVariables) ? $pathVariables : $hostVariables += $pathVariables;
122			}
123
124			return [$pathRegex ?? '/' . $routePath, $hostsRegex, $variables ?? $hostVariables];
125			}
126
127			/**
128			* {@inheritdoc}
129			*/
130			public function generateUri(Route $route, array $parameters, array $defaults = []): GeneratedUri
131			{
132			[$pathRegex, $pathVariables] = self::compilePattern(\ltrim($route->get('path'), '/'), true);
133
134			$pathRegex = '/' . \stripslashes(\str_replace('?', '', $pathRegex));
135			$createUri = new GeneratedUri(self::interpolate($pathRegex, $parameters, $defaults, $pathVariables));
136
137			foreach ($route->get('domain') as $host) {
138			$compiledHost = self::compilePattern($host, true);
139
140			if (!empty($compiledHost)) {
141			[$hostRegex, $hostVariables] = $compiledHost;
142
143			break;
144			}
145			}
146
147			if (!empty($schemes = $route->get('schemes'))) {
148			$createUri->withScheme(\in_array('https', $schemes, true) ? 'https' : \end($schemes) ?? 'http');
149
150			if (!isset($hostRegex)) {
151			$createUri->withHost($_SERVER['HTTP_HOST'] ?? '');
152			}
153			}
154
155			if (isset($hostRegex)) {
156			$createUri->withHost(self::interpolate($hostRegex, $parameters, $defaults, $hostVariables));
			0 ignored issues – show Comprehensibility Best Practice introduced 2021-06-30 09:51 UTC by Report Bug Copy Issue Report The variable `$hostVariables` does not seem to be defined for all execution paths leading up to this point. Loading history...
157			}
158
159			return $createUri;
160			}
161
162			/**
163			* Check for mandatory parameters then interpolate $uriRoute with given $parameters.
164			*
165			* @param array<int\|string,mixed> $parameters
166			*/
167			private static function interpolate(string $uriRoute, array $parameters, array $defaults, array $allowed): string
168			{
169			\preg_match_all('#(?:\[)?\<(\w+).*?\>(?:\])?#', $uriRoute, $paramVars, \PREG_SET_ORDER);
170
171			foreach ($paramVars as $offset => [$type, $var]) {
172			if ('[' === $type[0]) {
173			$defaults[$var] = null;
174
175			continue;
176			}
177
178			if (isset($parameters[$offset])) {
179			$defaults[$var] = $parameters[$offset];
180			unset($parameters[$offset]);
181			}
182			}
183
184			// Fetch and merge all possible parameters + route defaults ...
185			$parameters += $defaults;
186
187			// all params must be given
188			if ($diff = \array_diff_key($allowed, $parameters)) {
189			throw new UrlGenerationException(\sprintf('Some mandatory parameters are missing ("%s") to generate a URL for route path "%s".', \implode('", "', \array_keys($diff)), $uriRoute));
190			}
191
192			$replaces = self::URI_FIXERS;
193
194			foreach ($parameters as $key => $value) {
195			$replaces["<{$key}>"] = (\is_array($value) \|\| $value instanceof \Closure) ? '' : $value;
196			}
197
198			return \strtr($uriRoute, $replaces);
199			}
200
201			private static function sanitizeRequirement(string $key, ?string $regex): string
202			{
203			if (!empty($regex)) {
204			if ('^' === $regex[0]) {
205			$regex = \substr($regex, 1);
206			} elseif (0 === \strpos($regex, '\\A')) {
207			$regex = \substr($regex, 2);
208			}
209
210			if ('$' === $regex[-1]) {
211			$regex = \substr($regex, 0, -1);
212			} elseif (\strlen($regex) - 2 === \strpos($regex, '\\z')) {
213			$regex = \substr($regex, 0, -2);
214			}
215			}
216
217			if ('' === $regex) {
218			throw new \InvalidArgumentException(\sprintf('Routing requirement for "%s" cannot be empty.', $key));
219			}
220
221			return null !== $regex ? \strtr($regex, self::SEGMENT_REPLACES) : self::DEFAULT_SEGMENT;
222			}
223
224			/**
225			* @param array<string,string\|string[]> $requirements
226			*
227			* @throws UriHandlerException if a variable name starts with a digit or
228			* if it is too long to be successfully used as a PCRE subpattern or
229			* if a variable is referenced more than once
230			*
231			* @return array<string,mixed>
232			*/
233			private static function compilePattern(string $uriPattern, bool $reversed = false, array $requirements = []): array
234			{
235			$variables = $replaces = [];
236
237			// correct [/ first occurrence]
238			if (0 === \strpos($uriPattern, '[/')) {
239			$uriPattern = '[' . \substr($uriPattern, 3);
240			}
241
242			// Match all variables enclosed in "{}" and iterate over them...
243			\preg_match_all(self::COMPILER_REGEX, $uriPattern, $matches, \PREG_SET_ORDER \| \PREG_UNMATCHED_AS_NULL);
244
245			foreach ($matches as [$placeholder, $varName, $segment, $default]) {
246			// Filter variable name to meet requirement
247			self::filterVariableName($varName, $uriPattern);
248
249			if (\array_key_exists($varName, $variables)) {
250			throw new UriHandlerException(\sprintf('Route pattern "%s" cannot reference variable name "%s" more than once.', $uriPattern, $varName));
251			}
252
253			$variables[$varName] = $default;
254			$replaces[$placeholder] = !$reversed ? '(?P<' . $varName . '>' . (self::SEGMENT_TYPES[$segment] ?? $segment ?? self::prepareSegment($varName, $requirements)) . ')' : "<$varName>";
255			}
256
257			return [\strtr($uriPattern, !$reversed ? self::PATTERN_REPLACES + $replaces : $replaces), $variables];
258			}
259
260			/**
261			* Prevent variables with same name used more than once.
262			*/
263			private static function filterVariableName(string $varName, string $pattern): void
264			{
265			// A PCRE subpattern name must start with a non-digit. Also a PHP variable cannot start with a digit so the
266			// variable would not be usable as a Controller action argument.
267			if (1 === \preg_match('/^\d/', $varName)) {
268			throw new UriHandlerException(
269			\sprintf('Variable name "%s" cannot start with a digit in route pattern "%s". Use a different name.', $varName, $pattern)
270			);
271			}
272
273			if (\strlen($varName) > self::VARIABLE_MAXIMUM_LENGTH) {
274			throw new UriHandlerException(
275			\sprintf(
276			'Variable name "%s" cannot be longer than %s characters in route pattern "%s".',
277			$varName,
278			self::VARIABLE_MAXIMUM_LENGTH,
279			$pattern
280			)
281			);
282			}
283			}
284
285			/**
286			* Prepares segment pattern with given constrains.
287			*
288			* @param array<string,mixed> $requirements
289			*/
290			private static function prepareSegment(string $name, array $requirements): string
291			{
292			$segment = $requirements[$name] ?? null;
293
294			if (!\is_array($segment)) {
295			return self::sanitizeRequirement($name, $segment);
296			}
297
298			return \implode('\|', \array_map([__CLASS__, 'sanitizeRequirement'], $segment));
299			}
300			}
301

divineniiquaye / flight-routing

Pull Request — master (#16)

RouteCompiler::filterVariableName() A

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